diff --git a/benchmarks/main/benchmarks_generated.js b/benchmarks/main/benchmarks_generated.js index 23cab037e6..7f300ed912 100644 --- a/benchmarks/main/benchmarks_generated.js +++ b/benchmarks/main/benchmarks_generated.js @@ -34,12 +34,12 @@ function define(moduleName, _dependencies, moduleFactory) { -define("shared",["exports"],(function(t){"use strict";function e(t,e,r,n){return new(r||(r=Promise))((function(i,s){function a(t){try{l(n.next(t));}catch(t){s(t);}}function o(t){try{l(n.throw(t));}catch(t){s(t);}}function l(t){var e;t.done?i(t.value):(e=t.value,e instanceof r?e:new r((function(t){t(e);}))).then(a,o);}l((n=n.apply(t,e||[])).next());}))}function r(t){return t&&t.__esModule&&Object.prototype.hasOwnProperty.call(t,"default")?t.default:t}var n,i;function s(){if(i)return n;function t(t,e){this.x=t,this.y=e;}return i=1,n=t,t.prototype={clone:function(){return new t(this.x,this.y)},add:function(t){return this.clone()._add(t)},sub:function(t){return 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n=(s=this.y,a=this.z,o=ot(256*(i=this.x),256*(s=Math.pow(2,a)-s-1),a),l=ot(256*(i+1),256*(s+1),a),o[0]+","+o[1]+","+l[0]+","+l[1]);var i,s,a,o,l;const u=function(t,e,r){let n,i="";for(let s=t;s>0;s--)n=1<1?"@2x":"").replace(/{quadkey}/g,u).replace(/{bbox-epsg-3857}/g,n)}isChildOf(t){const e=this.z-t.z;return e>0&&t.x===this.x>>e&&t.y===this.y>>e}getTilePoint(t){const e=Math.pow(2,this.z);return new l((t.x*e-this.x)*M,(t.y*e-this.y)*M)}toString(){return `${this.z}/${this.x}/${this.y}`}}class is{constructor(t,e){this.wrap=t,this.canonical=e,this.key=as(t,e.z,e.z,e.x,e.y);}}class ss{constructor(t,e,r,n,i){if(this.terrainRttPosMatrix32f=null,t= z; overscaledZ = ${t}; z = ${r}`);this.overscaledZ=t,this.wrap=e,this.canonical=new ns(r,+n,+i),this.key=as(e,t,r,n,i);}clone(){return new ss(this.overscaledZ,this.wrap,this.canonical.z,this.canonical.x,this.canonical.y)}equals(t){return this.overscaledZ===t.overscaledZ&&this.wrap===t.wrap&&this.canonical.equals(t.canonical)}scaledTo(t){if(t>this.overscaledZ)throw new Error(`targetZ > this.overscaledZ; targetZ = ${t}; overscaledZ = ${this.overscaledZ}`);const e=this.canonical.z-t;return t>this.canonical.z?new ss(t,this.wrap,this.canonical.z,this.canonical.x,this.canonical.y):new ss(t,this.wrap,t,this.canonical.x>>e,this.canonical.y>>e)}calculateScaledKey(t,e){if(t>this.overscaledZ)throw new Error(`targetZ > this.overscaledZ; targetZ = ${t}; overscaledZ = ${this.overscaledZ}`);const r=this.canonical.z-t;return t>this.canonical.z?as(this.wrap*+e,t,this.canonical.z,this.canonical.x,this.canonical.y):as(this.wrap*+e,t,t,this.canonical.x>>r,this.canonical.y>>r)}isChildOf(t){if(t.wrap!==this.wrap)return !1;const e=this.canonical.z-t.canonical.z;return 0===t.overscaledZ||t.overscaledZ>e&&t.canonical.y===this.canonical.y>>e}children(t){if(this.overscaledZ>=t)return [new ss(this.overscaledZ+1,this.wrap,this.canonical.z,this.canonical.x,this.canonical.y)];const e=this.canonical.z+1,r=2*this.canonical.x,n=2*this.canonical.y;return [new ss(e,this.wrap,e,r,n),new ss(e,this.wrap,e,r+1,n),new ss(e,this.wrap,e,r,n+1),new ss(e,this.wrap,e,r+1,n+1)]}isLessThan(t){return this.wrapt.wrap)&&(this.overscaledZt.overscaledZ)&&(this.canonical.xt.canonical.x)&&this.canonical.y */function hs(){return os||(os=1,cs.read=function(t,e,r,n,i){var s,a,o=8*i-n-1,l=(1<>1,c=-7,h=r?i-1:0,p=r?-1:1,f=t[e+h];for(h+=p,s=f&(1<<-c)-1,f>>=-c,c+=o;c>0;s=256*s+t[e+h],h+=p,c-=8);for(a=s&(1<<-c)-1,s>>=-c,c+=n;c>0;a=256*a+t[e+h],h+=p,c-=8);if(0===s)s=1-u;else {if(s===l)return a?NaN:1/0*(f?-1:1);a+=Math.pow(2,n),s-=u;}return (f?-1:1)*a*Math.pow(2,s-n)},cs.write=function(t,e,r,n,i,s){var a,o,l,u=8*s-i-1,c=(1<>1,p=23===i?Math.pow(2,-24)-Math.pow(2,-77):0,f=n?0:s-1,d=n?1:-1,y=e<0||0===e&&1/e<0?1:0;for(e=Math.abs(e),isNaN(e)||e===1/0?(o=isNaN(e)?1:0,a=c):(a=Math.floor(Math.log(e)/Math.LN2),e*(l=Math.pow(2,-a))<1&&(a--,l*=2),(e+=a+h>=1?p/l:p*Math.pow(2,1-h))*l>=2&&(a++,l/=2),a+h>=c?(o=0,a=c):a+h>=1?(o=(e*l-1)*Math.pow(2,i),a+=h):(o=e*Math.pow(2,h-1)*Math.pow(2,i),a=0));i>=8;t[r+f]=255&o,f+=d,o/=256,i-=8);for(a=a<0;t[r+f]=255&a,f+=d,a/=256,u-=8);t[r+f-d]|=128*y;}),cs}function ps(){if(us)return ls;us=1,ls=e;var t=hs();function e(t){this.buf=ArrayBuffer.isView&&ArrayBuffer.isView(t)?t:new Uint8Array(t||0),this.pos=0,this.type=0,this.length=this.buf.length;}e.Varint=0,e.Fixed64=1,e.Bytes=2,e.Fixed32=5;var r=4294967296,n=1/r,i="undefined"==typeof TextDecoder?null:new TextDecoder("utf-8");function s(t){return t.type===e.Bytes?t.readVarint()+t.pos:t.pos+1}function a(t,e,r){return r?4294967296*e+(t>>>0):4294967296*(e>>>0)+(t>>>0)}function o(t,e,r){var n=e<=16383?1:e<=2097151?2:e<=268435455?3:Math.floor(Math.log(e)/(7*Math.LN2));r.realloc(n);for(var i=r.pos-1;i>=t;i--)r.buf[i+n]=r.buf[i];}function l(t,e){for(var r=0;r>>8,t[r+2]=e>>>16,t[r+3]=e>>>24;}function v(t,e){return (t[e]|t[e+1]<<8|t[e+2]<<16)+(t[e+3]<<24)}return e.prototype={destroy:function(){this.buf=null;},readFields:function(t,e,r){for(r=r||this.length;this.pos>3,s=this.pos;this.type=7&n,t(i,e,this),this.pos===s&&this.skip(n);}return e},readMessage:function(t,e){return this.readFields(t,e,this.readVarint()+this.pos)},readFixed32:function(){var t=g(this.buf,this.pos);return this.pos+=4,t},readSFixed32:function(){var t=v(this.buf,this.pos);return this.pos+=4,t},readFixed64:function(){var t=g(this.buf,this.pos)+g(this.buf,this.pos+4)*r;return this.pos+=8,t},readSFixed64:function(){var t=g(this.buf,this.pos)+v(this.buf,this.pos+4)*r;return this.pos+=8,t},readFloat:function(){var e=t.read(this.buf,this.pos,!0,23,4);return this.pos+=4,e},readDouble:function(){var e=t.read(this.buf,this.pos,!0,52,8);return this.pos+=8,e},readVarint:function(t){var e,r,n=this.buf;return e=127&(r=n[this.pos++]),r<128?e:(e|=(127&(r=n[this.pos++]))<<7,r<128?e:(e|=(127&(r=n[this.pos++]))<<14,r<128?e:(e|=(127&(r=n[this.pos++]))<<21,r<128?e:function(t,e,r){var n,i,s=r.buf;if(n=(112&(i=s[r.pos++]))>>4,i<128)return a(t,n,e);if(n|=(127&(i=s[r.pos++]))<<3,i<128)return a(t,n,e);if(n|=(127&(i=s[r.pos++]))<<10,i<128)return a(t,n,e);if(n|=(127&(i=s[r.pos++]))<<17,i<128)return a(t,n,e);if(n|=(127&(i=s[r.pos++]))<<24,i<128)return a(t,n,e);if(n|=(1&(i=s[r.pos++]))<<31,i<128)return a(t,n,e);throw new Error("Expected varint not more than 10 bytes")}(e|=(15&(r=n[this.pos]))<<28,t,this))))},readVarint64:function(){return this.readVarint(!0)},readSVarint:function(){var t=this.readVarint();return t%2==1?(t+1)/-2:t/2},readBoolean:function(){return Boolean(this.readVarint())},readString:function(){var t=this.readVarint()+this.pos,e=this.pos;return this.pos=t,t-e>=12&&i?function(t,e,r){return i.decode(t.subarray(e,r))}(this.buf,e,t):function(t,e,r){for(var n="",i=e;i239?4:l>223?3:l>191?2:1;if(i+c>r)break;1===c?l<128&&(u=l):2===c?128==(192&(s=t[i+1]))&&(u=(31&l)<<6|63&s)<=127&&(u=null):3===c?(a=t[i+2],128==(192&(s=t[i+1]))&&128==(192&a)&&((u=(15&l)<<12|(63&s)<<6|63&a)<=2047||u>=55296&&u<=57343)&&(u=null)):4===c&&(a=t[i+2],o=t[i+3],128==(192&(s=t[i+1]))&&128==(192&a)&&128==(192&o)&&((u=(15&l)<<18|(63&s)<<12|(63&a)<<6|63&o)<=65535||u>=1114112)&&(u=null)),null===u?(u=65533,c=1):u>65535&&(u-=65536,n+=String.fromCharCode(u>>>10&1023|55296),u=56320|1023&u),n+=String.fromCharCode(u),i+=c;}return n}(this.buf,e,t)},readBytes:function(){var t=this.readVarint()+this.pos,e=this.buf.subarray(this.pos,t);return this.pos=t,e},readPackedVarint:function(t,r){if(this.type!==e.Bytes)return t.push(this.readVarint(r));var n=s(this);for(t=t||[];this.pos127;);else if(r===e.Bytes)this.pos=this.readVarint()+this.pos;else if(r===e.Fixed32)this.pos+=4;else {if(r!==e.Fixed64)throw new Error("Unimplemented type: "+r);this.pos+=8;}},writeTag:function(t,e){this.writeVarint(t<<3|e);},realloc:function(t){for(var e=this.length||16;e268435455||t<0?function(t,e){var r,n;if(t>=0?(r=t%4294967296|0,n=t/4294967296|0):(n=~(-t/4294967296),4294967295^(r=~(-t%4294967296))?r=r+1|0:(r=0,n=n+1|0)),t>=0x10000000000000000||t<-0x10000000000000000)throw new Error("Given varint doesn't fit into 10 bytes");e.realloc(10),function(t,e,r){r.buf[r.pos++]=127&t|128,t>>>=7,r.buf[r.pos++]=127&t|128,t>>>=7,r.buf[r.pos++]=127&t|128,t>>>=7,r.buf[r.pos++]=127&t|128,r.buf[r.pos]=127&(t>>>=7);}(r,0,e),function(t,e){var r=(7&t)<<4;e.buf[e.pos++]|=r|((t>>>=3)?128:0),t&&(e.buf[e.pos++]=127&t|((t>>>=7)?128:0),t&&(e.buf[e.pos++]=127&t|((t>>>=7)?128:0),t&&(e.buf[e.pos++]=127&t|((t>>>=7)?128:0),t&&(e.buf[e.pos++]=127&t|((t>>>=7)?128:0),t&&(e.buf[e.pos++]=127&t)))));}(n,e);}(t,this):(this.realloc(4),this.buf[this.pos++]=127&t|(t>127?128:0),t<=127||(this.buf[this.pos++]=127&(t>>>=7)|(t>127?128:0),t<=127||(this.buf[this.pos++]=127&(t>>>=7)|(t>127?128:0),t<=127||(this.buf[this.pos++]=t>>>7&127))));},writeSVarint:function(t){this.writeVarint(t<0?2*-t-1:2*t);},writeBoolean:function(t){this.writeVarint(Boolean(t));},writeString:function(t){t=String(t),this.realloc(4*t.length),this.pos++;var e=this.pos;this.pos=function(t,e,r){for(var n,i,s=0;s55295&&n<57344){if(!i){n>56319||s+1===e.length?(t[r++]=239,t[r++]=191,t[r++]=189):i=n;continue}if(n<56320){t[r++]=239,t[r++]=191,t[r++]=189,i=n;continue}n=i-55296<<10|n-56320|65536,i=null;}else i&&(t[r++]=239,t[r++]=191,t[r++]=189,i=null);n<128?t[r++]=n:(n<2048?t[r++]=n>>6|192:(n<65536?t[r++]=n>>12|224:(t[r++]=n>>18|240,t[r++]=n>>12&63|128),t[r++]=n>>6&63|128),t[r++]=63&n|128);}return r}(this.buf,t,this.pos);var r=this.pos-e;r>=128&&o(e,r,this),this.pos=e-1,this.writeVarint(r),this.pos+=r;},writeFloat:function(e){this.realloc(4),t.write(this.buf,e,this.pos,!0,23,4),this.pos+=4;},writeDouble:function(e){this.realloc(8),t.write(this.buf,e,this.pos,!0,52,8),this.pos+=8;},writeBytes:function(t){var e=t.length;this.writeVarint(e),this.realloc(e);for(var r=0;r=128&&o(r,n,this),this.pos=r-1,this.writeVarint(n),this.pos+=n;},writeMessage:function(t,r,n){this.writeTag(t,e.Bytes),this.writeRawMessage(r,n);},writePackedVarint:function(t,e){e.length&&this.writeMessage(t,l,e);},writePackedSVarint:function(t,e){e.length&&this.writeMessage(t,u,e);},writePackedBoolean:function(t,e){e.length&&this.writeMessage(t,p,e);},writePackedFloat:function(t,e){e.length&&this.writeMessage(t,c,e);},writePackedDouble:function(t,e){e.length&&this.writeMessage(t,h,e);},writePackedFixed32:function(t,e){e.length&&this.writeMessage(t,f,e);},writePackedSFixed32:function(t,e){e.length&&this.writeMessage(t,d,e);},writePackedFixed64:function(t,e){e.length&&this.writeMessage(t,y,e);},writePackedSFixed64:function(t,e){e.length&&this.writeMessage(t,m,e);},writeBytesField:function(t,r){this.writeTag(t,e.Bytes),this.writeBytes(r);},writeFixed32Field:function(t,r){this.writeTag(t,e.Fixed32),this.writeFixed32(r);},writeSFixed32Field:function(t,r){this.writeTag(t,e.Fixed32),this.writeSFixed32(r);},writeFixed64Field:function(t,r){this.writeTag(t,e.Fixed64),this.writeFixed64(r);},writeSFixed64Field:function(t,r){this.writeTag(t,e.Fixed64),this.writeSFixed64(r);},writeVarintField:function(t,r){this.writeTag(t,e.Varint),this.writeVarint(r);},writeSVarintField:function(t,r){this.writeTag(t,e.Varint),this.writeSVarint(r);},writeStringField:function(t,r){this.writeTag(t,e.Bytes),this.writeString(r);},writeFloatField:function(t,r){this.writeTag(t,e.Fixed32),this.writeFloat(r);},writeDoubleField:function(t,r){this.writeTag(t,e.Fixed64),this.writeDouble(r);},writeBooleanField:function(t,e){this.writeVarintField(t,Boolean(e));}},ls}var fs,ds,ys,ms,gs,xs,vs,bs=r(ps()),ws={};function _s(){if(ds)return fs;ds=1;var t=s();function e(t,e,n,i,s){this.properties={},this.extent=n,this.type=0,this._pbf=t,this._geometry=-1,this._keys=i,this._values=s,t.readFields(r,this,e);}function r(t,e,r){1==t?e.id=r.readVarint():2==t?function(t,e){for(var r=t.readVarint()+t.pos;t.pos>3;}if(s--,1===i||2===i)a+=e.readSVarint(),o+=e.readSVarint(),1===i&&(r&&l.push(r),r=[]),r.push(new t(a,o));else {if(7!==i)throw new Error("unknown command "+i);r&&r.push(r[0].clone());}}return r&&l.push(r),l},e.prototype.bbox=function(){var t=this._pbf;t.pos=this._geometry;for(var e=t.readVarint()+t.pos,r=1,n=0,i=0,s=0,a=1/0,o=-1/0,l=1/0,u=-1/0;t.pos>3;}if(n--,1===r||2===r)(i+=t.readSVarint())o&&(o=i),(s+=t.readSVarint())u&&(u=s);else if(7!==r)throw new Error("unknown command "+r)}return [a,l,o,u]},e.prototype.toGeoJSON=function(t,r,i){var s,a,o=this.extent*Math.pow(2,i),l=this.extent*t,u=this.extent*r,c=this.loadGeometry(),h=e.types[this.type];function p(t){for(var e=0;e>3;e=1===n?t.readString():2===n?t.readFloat():3===n?t.readDouble():4===n?t.readVarint64():5===n?t.readVarint():6===n?t.readSVarint():7===n?t.readBoolean():null;}return e}(r));}return ys=e,e.prototype.feature=function(e){if(e<0||e>=this._features.length)throw new Error("feature index out of bounds");this._pbf.pos=this._features[e];var r=this._pbf.readVarint()+this._pbf.pos;return new t(this._pbf,r,this.extent,this._keys,this._values)},ys}function As(){return vs||(vs=1,ws.VectorTile=function(){if(xs)return gs;xs=1;var t=Ss();function e(e,r,n){if(3===e){var i=new t(n,n.readVarint()+n.pos);i.length&&(r[i.name]=i);}}return gs=function(t,r){this.layers=t.readFields(e,{},r);},gs}(),ws.VectorTileFeature=_s(),ws.VectorTileLayer=Ss()),ws}var ks=As(),Ms=r(ks);function Is(t,e,r){r[t]&&-1!==r[t].indexOf(e)||(r[t]=r[t]||[],r[t].push(e));}function zs(t,e,r){if(r&&r[t]){const n=r[t].indexOf(e);-1!==n&&r[t].splice(n,1);}}class Ps{constructor(t,e={}){F(this,e),this.type=t;}}class Cs extends Ps{constructor(t,e={}){super("error",F({error:t},e));}}class Bs{on(t,e){return this._listeners=this._listeners||{},Is(t,e,this._listeners),{unsubscribe:()=>{this.off(t,e);}}}off(t,e){return zs(t,e,this._listeners),zs(t,e,this._oneTimeListeners),this}once(t,e){return e?(this._oneTimeListeners=this._oneTimeListeners||{},Is(t,e,this._oneTimeListeners),this):new Promise((e=>this.once(t,e)))}fire(t,e){"string"==typeof t&&(t=new Ps(t,e||{}));const r=t.type;if(this.listens(r)){t.target=this;const e=this._listeners&&this._listeners[r]?this._listeners[r].slice():[];for(const r of e)r.call(this,t);const n=this._oneTimeListeners&&this._oneTimeListeners[r]?this._oneTimeListeners[r].slice():[];for(const e of n)zs(r,e,this._oneTimeListeners),e.call(this,t);const i=this._eventedParent;i&&(F(t,"function"==typeof this._eventedParentData?this._eventedParentData():this._eventedParentData),i.fire(t));}else t instanceof Cs&&console.error(t.error);return this}listens(t){return this._listeners&&this._listeners[t]&&this._listeners[t].length>0||this._oneTimeListeners&&this._oneTimeListeners[t]&&this._oneTimeListeners[t].length>0||this._eventedParent&&this._eventedParent.listens(t)}setEventedParent(t,e){return this._eventedParent=t,this._eventedParentData=e,this}}const Vs=Di,Es=Vs.light,Ts=Vs.sky,Fs=Vs.paintProperty,Ls=Vs.layoutProperty;function Ds(t,e){let r=!1;if(e&&e.length)for(const n of e)t.fire(new Cs(new Error(n.message))),r=!0;return r}class $s{constructor(){this.first=!0;}update(t,e){const r=Math.floor(t);return this.first?(this.first=!1,this.lastIntegerZoom=r,this.lastIntegerZoomTime=0,this.lastZoom=t,this.lastFloorZoom=r,!0):(this.lastFloorZoom>r?(this.lastIntegerZoom=r+1,this.lastIntegerZoomTime=e):this.lastFloorZoomt>=128&&t<=255,"Hangul Jamo":t=>t>=4352&&t<=4607,Khmer:t=>t>=6016&&t<=6143,"General Punctuation":t=>t>=8192&&t<=8303,"Letterlike Symbols":t=>t>=8448&&t<=8527,"Number Forms":t=>t>=8528&&t<=8591,"Miscellaneous Technical":t=>t>=8960&&t<=9215,"Control Pictures":t=>t>=9216&&t<=9279,"Optical Character Recognition":t=>t>=9280&&t<=9311,"Enclosed Alphanumerics":t=>t>=9312&&t<=9471,"Geometric Shapes":t=>t>=9632&&t<=9727,"Miscellaneous Symbols":t=>t>=9728&&t<=9983,"Miscellaneous Symbols and Arrows":t=>t>=11008&&t<=11263,"Ideographic Description Characters":t=>t>=12272&&t<=12287,"CJK Symbols and Punctuation":t=>t>=12288&&t<=12351,Katakana:t=>t>=12448&&t<=12543,Kanbun:t=>t>=12688&&t<=12703,"CJK Strokes":t=>t>=12736&&t<=12783,"Enclosed CJK Letters and Months":t=>t>=12800&&t<=13055,"CJK Compatibility":t=>t>=13056&&t<=13311,"Yijing Hexagram Symbols":t=>t>=19904&&t<=19967,"Private Use Area":t=>t>=57344&&t<=63743,"Vertical Forms":t=>t>=65040&&t<=65055,"CJK Compatibility Forms":t=>t>=65072&&t<=65103,"Small Form Variants":t=>t>=65104&&t<=65135,"Halfwidth and Fullwidth Forms":t=>t>=65280&&t<=65519};function Rs(t){for(const e of t)if(Zs(e.charCodeAt(0)))return !0;return !1}function js(t){for(const e of t)if(!qs(e.charCodeAt(0)))return !1;return !0}function Ns(t){const e=t.map((t=>{try{return new RegExp(`\\p{sc=${t}}`,"u").source}catch(t){return null}})).filter((t=>t));return new RegExp(e.join("|"),"u")}const Us=Ns(["Arab","Dupl","Mong","Ougr","Syrc"]);function qs(t){return !Us.test(String.fromCodePoint(t))}const Gs=Ns(["Bopo","Hani","Hira","Kana","Kits","Nshu","Tang","Yiii"]);function Zs(t){return !(746!==t&&747!==t&&(t<4352||!(Os["CJK Compatibility Forms"](t)&&!(t>=65097&&t<=65103)||Os["CJK Compatibility"](t)||Os["CJK Strokes"](t)||!(!Os["CJK Symbols and Punctuation"](t)||t>=12296&&t<=12305||t>=12308&&t<=12319||12336===t)||Os["Enclosed CJK Letters and Months"](t)||Os["Ideographic Description Characters"](t)||Os.Kanbun(t)||Os.Katakana(t)&&12540!==t||!(!Os["Halfwidth and Fullwidth Forms"](t)||65288===t||65289===t||65293===t||t>=65306&&t<=65310||65339===t||65341===t||65343===t||t>=65371&&t<=65503||65507===t||t>=65512&&t<=65519)||!(!Os["Small Form Variants"](t)||t>=65112&&t<=65118||t>=65123&&t<=65126)||Os["Vertical Forms"](t)||Os["Yijing Hexagram Symbols"](t)||/\p{sc=Cans}/u.test(String.fromCodePoint(t))||/\p{sc=Hang}/u.test(String.fromCodePoint(t))||Gs.test(String.fromCodePoint(t)))))}function Xs(t){return !(Zs(t)||function(t){return !!(Os["Latin-1 Supplement"](t)&&(167===t||169===t||174===t||177===t||188===t||189===t||190===t||215===t||247===t)||Os["General Punctuation"](t)&&(8214===t||8224===t||8225===t||8240===t||8241===t||8251===t||8252===t||8258===t||8263===t||8264===t||8265===t||8273===t)||Os["Letterlike Symbols"](t)||Os["Number Forms"](t)||Os["Miscellaneous Technical"](t)&&(t>=8960&&t<=8967||t>=8972&&t<=8991||t>=8996&&t<=9e3||9003===t||t>=9085&&t<=9114||t>=9150&&t<=9165||9167===t||t>=9169&&t<=9179||t>=9186&&t<=9215)||Os["Control Pictures"](t)&&9251!==t||Os["Optical Character Recognition"](t)||Os["Enclosed Alphanumerics"](t)||Os["Geometric Shapes"](t)||Os["Miscellaneous Symbols"](t)&&!(t>=9754&&t<=9759)||Os["Miscellaneous Symbols and Arrows"](t)&&(t>=11026&&t<=11055||t>=11088&&t<=11097||t>=11192&&t<=11243)||Os["CJK Symbols and Punctuation"](t)||Os.Katakana(t)||Os["Private Use Area"](t)||Os["CJK Compatibility Forms"](t)||Os["Small Form Variants"](t)||Os["Halfwidth and Fullwidth Forms"](t)||8734===t||8756===t||8757===t||t>=9984&&t<=10087||t>=10102&&t<=10131||65532===t||65533===t)}(t))}const Ks=Ns(["Adlm","Arab","Armi","Avst","Chrs","Cprt","Egyp","Elym","Gara","Hatr","Hebr","Hung","Khar","Lydi","Mand","Mani","Mend","Merc","Mero","Narb","Nbat","Nkoo","Orkh","Palm","Phli","Phlp","Phnx","Prti","Rohg","Samr","Sarb","Sogo","Syrc","Thaa","Todr","Yezi"]);function Hs(t){return Ks.test(String.fromCodePoint(t))}function Ys(t,e){return !(!e&&Hs(t)||t>=2304&&t<=3583||t>=3840&&t<=4255||Os.Khmer(t))}function Js(t){for(const e of t)if(Hs(e.charCodeAt(0)))return !0;return !1}const Ws=new class{constructor(){this.TIMEOUT=5e3,this.applyArabicShaping=null,this.processBidirectionalText=null,this.processStyledBidirectionalText=null,this.pluginStatus="unavailable",this.pluginURL=null,this.loadScriptResolve=()=>{};}setState(t){this.pluginStatus=t.pluginStatus,this.pluginURL=t.pluginURL;}getState(){return {pluginStatus:this.pluginStatus,pluginURL:this.pluginURL}}setMethods(t){if(Ws.isParsed())throw new Error("RTL text plugin already registered.");this.applyArabicShaping=t.applyArabicShaping,this.processBidirectionalText=t.processBidirectionalText,this.processStyledBidirectionalText=t.processStyledBidirectionalText,this.loadScriptResolve();}isParsed(){return null!=this.applyArabicShaping&&null!=this.processBidirectionalText&&null!=this.processStyledBidirectionalText}getRTLTextPluginStatus(){return this.pluginStatus}syncState(t,r){return e(this,void 0,void 0,(function*(){if(this.isParsed())return this.getState();if("loading"!==t.pluginStatus)return this.setState(t),t;const e=t.pluginURL,n=new Promise((t=>{this.loadScriptResolve=t;}));r(e);const i=new Promise((t=>setTimeout((()=>t()),this.TIMEOUT)));if(yield Promise.race([n,i]),this.isParsed()){const t={pluginStatus:"loaded",pluginURL:e};return this.setState(t),t}throw this.setState({pluginStatus:"error",pluginURL:""}),new Error(`RTL Text Plugin failed to import scripts from ${e}`)}))}};class Qs{constructor(t,e){this.zoom=t,e?(this.now=e.now,this.fadeDuration=e.fadeDuration,this.zoomHistory=e.zoomHistory,this.transition=e.transition):(this.now=0,this.fadeDuration=0,this.zoomHistory=new $s,this.transition={});}isSupportedScript(t){return function(t,e){for(const r of t)if(!Ys(r.charCodeAt(0),e))return !1;return !0}(t,"loaded"===Ws.getRTLTextPluginStatus())}crossFadingFactor(){return 0===this.fadeDuration?1:Math.min((this.now-this.zoomHistory.lastIntegerZoomTime)/this.fadeDuration,1)}getCrossfadeParameters(){const t=this.zoom,e=t-Math.floor(t),r=this.crossFadingFactor();return t>this.zoomHistory.lastIntegerZoom?{fromScale:2,toScale:1,t:e+(1-e)*r}:{fromScale:.5,toScale:1,t:1-(1-r)*e}}}class ta{constructor(t,e){this.property=t,this.value=e,this.expression=function(t,e){if(Cn(t))return new qn(t,e);if(On(t)){const r=Un(t,e);if("error"===r.result)throw new Error(r.value.map((t=>`${t.key}: ${t.message}`)).join(", "));return r.value}{let r=t;return "color"===e.type&&"string"==typeof t?r=fe.parse(t):"padding"!==e.type||"number"!=typeof t&&!Array.isArray(t)?"variableAnchorOffsetCollection"===e.type&&Array.isArray(t)?r=be.parse(t):"projectionDefinition"===e.type&&"string"==typeof t&&(r=_e.parse(t)):r=ge.parse(t),{kind:"constant",evaluate:()=>r}}}(void 0===e?t.specification.default:e,t.specification);}isDataDriven(){return "source"===this.expression.kind||"composite"===this.expression.kind}possiblyEvaluate(t,e,r){return this.property.possiblyEvaluate(this,t,e,r)}}class ea{constructor(t){this.property=t,this.value=new ta(t,void 0);}transitioned(t,e){return new na(this.property,this.value,e,F({},t.transition,this.transition),t.now)}untransitioned(){return new na(this.property,this.value,null,{},0)}}class ra{constructor(t){this._properties=t,this._values=Object.create(t.defaultTransitionablePropertyValues);}getValue(t){return O(this._values[t].value.value)}setValue(t,e){Object.prototype.hasOwnProperty.call(this._values,t)||(this._values[t]=new ea(this._values[t].property)),this._values[t].value=new ta(this._values[t].property,null===e?void 0:O(e));}getTransition(t){return O(this._values[t].transition)}setTransition(t,e){Object.prototype.hasOwnProperty.call(this._values,t)||(this._values[t]=new ea(this._values[t].property)),this._values[t].transition=O(e)||void 0;}serialize(){const t={};for(const e of Object.keys(this._values)){const r=this.getValue(e);void 0!==r&&(t[e]=r);const n=this.getTransition(e);void 0!==n&&(t[`${e}-transition`]=n);}return t}transitioned(t,e){const r=new ia(this._properties);for(const n of Object.keys(this._values))r._values[n]=this._values[n].transitioned(t,e._values[n]);return r}untransitioned(){const t=new ia(this._properties);for(const e of Object.keys(this._values))t._values[e]=this._values[e].untransitioned();return t}}class na{constructor(t,e,r,n,i){this.property=t,this.value=e,this.begin=i+n.delay||0,this.end=this.begin+n.duration||0,t.specification.transition&&(n.delay||n.duration)&&(this.prior=r);}possiblyEvaluate(t,e,r){const n=t.now||0,i=this.value.possiblyEvaluate(t,e,r),s=this.prior;if(s){if(n>this.end)return this.prior=null,i;if(this.value.isDataDriven())return this.prior=null,i;if(nn.zoomHistory.lastIntegerZoom?{from:t,to:e}:{from:r,to:e}}interpolate(t){return t}}class ha{constructor(t){this.specification=t;}possiblyEvaluate(t,e,r,n){if(void 0!==t.value){if("constant"===t.expression.kind){const i=t.expression.evaluate(e,null,{},r,n);return this._calculate(i,i,i,e)}return this._calculate(t.expression.evaluate(new Qs(Math.floor(e.zoom-1),e)),t.expression.evaluate(new Qs(Math.floor(e.zoom),e)),t.expression.evaluate(new Qs(Math.floor(e.zoom+1),e)),e)}}_calculate(t,e,r,n){return n.zoom>n.zoomHistory.lastIntegerZoom?{from:t,to:e}:{from:r,to:e}}interpolate(t){return t}}class pa{constructor(t){this.specification=t;}possiblyEvaluate(t,e,r,n){return !!t.expression.evaluate(e,null,{},r,n)}interpolate(){return !1}}class fa{constructor(t){this.properties=t,this.defaultPropertyValues={},this.defaultTransitionablePropertyValues={},this.defaultTransitioningPropertyValues={},this.defaultPossiblyEvaluatedValues={},this.overridableProperties=[];for(const e in t){const r=t[e];r.specification.overridable&&this.overridableProperties.push(e);const n=this.defaultPropertyValues[e]=new ta(r,void 0),i=this.defaultTransitionablePropertyValues[e]=new ea(r);this.defaultTransitioningPropertyValues[e]=i.untransitioned(),this.defaultPossiblyEvaluatedValues[e]=n.possiblyEvaluate({});}}}Ji("DataDrivenProperty",ua),Ji("DataConstantProperty",la),Ji("CrossFadedDataDrivenProperty",ca),Ji("CrossFadedProperty",ha),Ji("ColorRampProperty",pa);const da="-transition";class ya extends Bs{constructor(t,e){if(super(),this.id=t.id,this.type=t.type,this._featureFilter={filter:()=>!0,needGeometry:!1},"custom"!==t.type&&(this.metadata=t.metadata,this.minzoom=t.minzoom,this.maxzoom=t.maxzoom,"background"!==t.type&&(this.source=t.source,this.sourceLayer=t["source-layer"],this.filter=t.filter),e.layout&&(this._unevaluatedLayout=new sa(e.layout)),e.paint)){this._transitionablePaint=new ra(e.paint);for(const e in t.paint)this.setPaintProperty(e,t.paint[e],{validate:!1});for(const e in t.layout)this.setLayoutProperty(e,t.layout[e],{validate:!1});this._transitioningPaint=this._transitionablePaint.untransitioned(),this.paint=new oa(e.paint);}}getCrossfadeParameters(){return this._crossfadeParameters}getLayoutProperty(t){return "visibility"===t?this.visibility:this._unevaluatedLayout.getValue(t)}setLayoutProperty(t,e,r={}){null!=e&&this._validate(Ls,`layers.${this.id}.layout.${t}`,t,e,r)||("visibility"!==t?this._unevaluatedLayout.setValue(t,e):this.visibility=e);}getPaintProperty(t){return t.endsWith(da)?this._transitionablePaint.getTransition(t.slice(0,-11)):this._transitionablePaint.getValue(t)}setPaintProperty(t,e,r={}){if(null!=e&&this._validate(Fs,`layers.${this.id}.paint.${t}`,t,e,r))return !1;if(t.endsWith(da))return this._transitionablePaint.setTransition(t.slice(0,-11),e||void 0),!1;{const r=this._transitionablePaint._values[t],n="cross-faded-data-driven"===r.property.specification["property-type"],i=r.value.isDataDriven(),s=r.value;this._transitionablePaint.setValue(t,e),this._handleSpecialPaintPropertyUpdate(t);const a=this._transitionablePaint._values[t].value;return a.isDataDriven()||i||n||this._handleOverridablePaintPropertyUpdate(t,s,a)}}_handleSpecialPaintPropertyUpdate(t){}_handleOverridablePaintPropertyUpdate(t,e,r){return !1}isHidden(t){return !!(this.minzoom&&t=this.maxzoom)||"none"===this.visibility}updateTransitions(t){this._transitioningPaint=this._transitionablePaint.transitioned(t,this._transitioningPaint);}hasTransition(){return this._transitioningPaint.hasTransition()}recalculate(t,e){t.getCrossfadeParameters&&(this._crossfadeParameters=t.getCrossfadeParameters()),this._unevaluatedLayout&&(this.layout=this._unevaluatedLayout.possiblyEvaluate(t,void 0,e)),this.paint=this._transitioningPaint.possiblyEvaluate(t,void 0,e);}serialize(){const t={id:this.id,type:this.type,source:this.source,"source-layer":this.sourceLayer,metadata:this.metadata,minzoom:this.minzoom,maxzoom:this.maxzoom,filter:this.filter,layout:this._unevaluatedLayout&&this._unevaluatedLayout.serialize(),paint:this._transitionablePaint&&this._transitionablePaint.serialize()};return this.visibility&&(t.layout=t.layout||{},t.layout.visibility=this.visibility),$(t,((t,e)=>!(void 0===t||"layout"===e&&!Object.keys(t).length||"paint"===e&&!Object.keys(t).length)))}_validate(t,e,r,n,i={}){return (!i||!1!==i.validate)&&Ds(this,t.call(Vs,{key:e,layerType:this.type,objectKey:r,value:n,styleSpec:ut,style:{glyphs:!0,sprite:!0}}))}is3D(){return !1}isTileClipped(){return !1}hasOffscreenPass(){return !1}resize(){}isStateDependent(){for(const t in this.paint._values){const e=this.paint.get(t);if(e instanceof aa&&Mn(e.property.specification)&&("source"===e.value.kind||"composite"===e.value.kind)&&e.value.isStateDependent)return !0}return !1}}const ma={Int8:Int8Array,Uint8:Uint8Array,Int16:Int16Array,Uint16:Uint16Array,Int32:Int32Array,Uint32:Uint32Array,Float32:Float32Array};class ga{constructor(t,e){this._structArray=t,this._pos1=e*this.size,this._pos2=this._pos1/2,this._pos4=this._pos1/4,this._pos8=this._pos1/8;}}class xa{constructor(){this.isTransferred=!1,this.capacity=-1,this.resize(0);}static serialize(t,e){return t._trim(),e&&(t.isTransferred=!0,e.push(t.arrayBuffer)),{length:t.length,arrayBuffer:t.arrayBuffer}}static deserialize(t){const e=Object.create(this.prototype);return e.arrayBuffer=t.arrayBuffer,e.length=t.length,e.capacity=t.arrayBuffer.byteLength/e.bytesPerElement,e._refreshViews(),e}_trim(){this.length!==this.capacity&&(this.capacity=this.length,this.arrayBuffer=this.arrayBuffer.slice(0,this.length*this.bytesPerElement),this._refreshViews());}clear(){this.length=0;}resize(t){this.reserve(t),this.length=t;}reserve(t){if(t>this.capacity){this.capacity=Math.max(t,Math.floor(5*this.capacity),128),this.arrayBuffer=new ArrayBuffer(this.capacity*this.bytesPerElement);const e=this.uint8;this._refreshViews(),e&&this.uint8.set(e);}}_refreshViews(){throw new Error("_refreshViews() must be implemented by each concrete StructArray layout")}}function va(t,e=1){let r=0,n=0;return {members:t.map((t=>{const i=ma[t.type].BYTES_PER_ELEMENT,s=r=ba(r,Math.max(e,i)),a=t.components||1;return n=Math.max(n,i),r+=i*a,{name:t.name,type:t.type,components:a,offset:s}})),size:ba(r,Math.max(n,e)),alignment:e}}function ba(t,e){return Math.ceil(t/e)*e}class wa extends xa{_refreshViews(){this.uint8=new Uint8Array(this.arrayBuffer),this.int16=new Int16Array(this.arrayBuffer);}emplaceBack(t,e){const r=this.length;return this.resize(r+1),this.emplace(r,t,e)}emplace(t,e,r){const n=2*t;return this.int16[n+0]=e,this.int16[n+1]=r,t}}wa.prototype.bytesPerElement=4,Ji("StructArrayLayout2i4",wa);class _a extends xa{_refreshViews(){this.uint8=new Uint8Array(this.arrayBuffer),this.int16=new Int16Array(this.arrayBuffer);}emplaceBack(t,e,r){const n=this.length;return this.resize(n+1),this.emplace(n,t,e,r)}emplace(t,e,r,n){const i=3*t;return this.int16[i+0]=e,this.int16[i+1]=r,this.int16[i+2]=n,t}}_a.prototype.bytesPerElement=6,Ji("StructArrayLayout3i6",_a);class Sa extends xa{_refreshViews(){this.uint8=new Uint8Array(this.arrayBuffer),this.int16=new Int16Array(this.arrayBuffer);}emplaceBack(t,e,r,n){const i=this.length;return this.resize(i+1),this.emplace(i,t,e,r,n)}emplace(t,e,r,n,i){const s=4*t;return this.int16[s+0]=e,this.int16[s+1]=r,this.int16[s+2]=n,this.int16[s+3]=i,t}}Sa.prototype.bytesPerElement=8,Ji("StructArrayLayout4i8",Sa);class Aa extends xa{_refreshViews(){this.uint8=new Uint8Array(this.arrayBuffer),this.int16=new Int16Array(this.arrayBuffer);}emplaceBack(t,e,r,n,i,s){const a=this.length;return this.resize(a+1),this.emplace(a,t,e,r,n,i,s)}emplace(t,e,r,n,i,s,a){const o=6*t;return this.int16[o+0]=e,this.int16[o+1]=r,this.int16[o+2]=n,this.int16[o+3]=i,this.int16[o+4]=s,this.int16[o+5]=a,t}}Aa.prototype.bytesPerElement=12,Ji("StructArrayLayout2i4i12",Aa);class ka extends xa{_refreshViews(){this.uint8=new Uint8Array(this.arrayBuffer),this.int16=new Int16Array(this.arrayBuffer);}emplaceBack(t,e,r,n,i,s){const a=this.length;return this.resize(a+1),this.emplace(a,t,e,r,n,i,s)}emplace(t,e,r,n,i,s,a){const o=4*t,l=8*t;return this.int16[o+0]=e,this.int16[o+1]=r,this.uint8[l+4]=n,this.uint8[l+5]=i,this.uint8[l+6]=s,this.uint8[l+7]=a,t}}ka.prototype.bytesPerElement=8,Ji("StructArrayLayout2i4ub8",ka);class Ma extends xa{_refreshViews(){this.uint8=new Uint8Array(this.arrayBuffer),this.float32=new Float32Array(this.arrayBuffer);}emplaceBack(t,e){const r=this.length;return this.resize(r+1),this.emplace(r,t,e)}emplace(t,e,r){const n=2*t;return this.float32[n+0]=e,this.float32[n+1]=r,t}}Ma.prototype.bytesPerElement=8,Ji("StructArrayLayout2f8",Ma);class Ia extends xa{_refreshViews(){this.uint8=new Uint8Array(this.arrayBuffer),this.uint16=new Uint16Array(this.arrayBuffer);}emplaceBack(t,e,r,n,i,s,a,o,l,u){const c=this.length;return this.resize(c+1),this.emplace(c,t,e,r,n,i,s,a,o,l,u)}emplace(t,e,r,n,i,s,a,o,l,u,c){const h=10*t;return this.uint16[h+0]=e,this.uint16[h+1]=r,this.uint16[h+2]=n,this.uint16[h+3]=i,this.uint16[h+4]=s,this.uint16[h+5]=a,this.uint16[h+6]=o,this.uint16[h+7]=l,this.uint16[h+8]=u,this.uint16[h+9]=c,t}}Ia.prototype.bytesPerElement=20,Ji("StructArrayLayout10ui20",Ia);class za extends xa{_refreshViews(){this.uint8=new Uint8Array(this.arrayBuffer),this.int16=new Int16Array(this.arrayBuffer),this.uint16=new Uint16Array(this.arrayBuffer);}emplaceBack(t,e,r,n,i,s,a,o,l,u,c,h){const p=this.length;return this.resize(p+1),this.emplace(p,t,e,r,n,i,s,a,o,l,u,c,h)}emplace(t,e,r,n,i,s,a,o,l,u,c,h,p){const f=12*t;return this.int16[f+0]=e,this.int16[f+1]=r,this.int16[f+2]=n,this.int16[f+3]=i,this.uint16[f+4]=s,this.uint16[f+5]=a,this.uint16[f+6]=o,this.uint16[f+7]=l,this.int16[f+8]=u,this.int16[f+9]=c,this.int16[f+10]=h,this.int16[f+11]=p,t}}za.prototype.bytesPerElement=24,Ji("StructArrayLayout4i4ui4i24",za);class Pa extends xa{_refreshViews(){this.uint8=new Uint8Array(this.arrayBuffer),this.float32=new Float32Array(this.arrayBuffer);}emplaceBack(t,e,r){const n=this.length;return this.resize(n+1),this.emplace(n,t,e,r)}emplace(t,e,r,n){const i=3*t;return this.float32[i+0]=e,this.float32[i+1]=r,this.float32[i+2]=n,t}}Pa.prototype.bytesPerElement=12,Ji("StructArrayLayout3f12",Pa);class Ca extends xa{_refreshViews(){this.uint8=new Uint8Array(this.arrayBuffer),this.uint32=new Uint32Array(this.arrayBuffer);}emplaceBack(t){const e=this.length;return this.resize(e+1),this.emplace(e,t)}emplace(t,e){return this.uint32[1*t+0]=e,t}}Ca.prototype.bytesPerElement=4,Ji("StructArrayLayout1ul4",Ca);class Ba extends xa{_refreshViews(){this.uint8=new Uint8Array(this.arrayBuffer),this.int16=new Int16Array(this.arrayBuffer),this.uint32=new Uint32Array(this.arrayBuffer),this.uint16=new Uint16Array(this.arrayBuffer);}emplaceBack(t,e,r,n,i,s,a,o,l){const u=this.length;return this.resize(u+1),this.emplace(u,t,e,r,n,i,s,a,o,l)}emplace(t,e,r,n,i,s,a,o,l,u){const c=10*t,h=5*t;return this.int16[c+0]=e,this.int16[c+1]=r,this.int16[c+2]=n,this.int16[c+3]=i,this.int16[c+4]=s,this.int16[c+5]=a,this.uint32[h+3]=o,this.uint16[c+8]=l,this.uint16[c+9]=u,t}}Ba.prototype.bytesPerElement=20,Ji("StructArrayLayout6i1ul2ui20",Ba);class Va extends xa{_refreshViews(){this.uint8=new Uint8Array(this.arrayBuffer),this.int16=new Int16Array(this.arrayBuffer);}emplaceBack(t,e,r,n,i,s){const a=this.length;return this.resize(a+1),this.emplace(a,t,e,r,n,i,s)}emplace(t,e,r,n,i,s,a){const o=6*t;return this.int16[o+0]=e,this.int16[o+1]=r,this.int16[o+2]=n,this.int16[o+3]=i,this.int16[o+4]=s,this.int16[o+5]=a,t}}Va.prototype.bytesPerElement=12,Ji("StructArrayLayout2i2i2i12",Va);class Ea extends xa{_refreshViews(){this.uint8=new Uint8Array(this.arrayBuffer),this.float32=new Float32Array(this.arrayBuffer),this.int16=new Int16Array(this.arrayBuffer);}emplaceBack(t,e,r,n,i){const s=this.length;return this.resize(s+1),this.emplace(s,t,e,r,n,i)}emplace(t,e,r,n,i,s){const a=4*t,o=8*t;return this.float32[a+0]=e,this.float32[a+1]=r,this.float32[a+2]=n,this.int16[o+6]=i,this.int16[o+7]=s,t}}Ea.prototype.bytesPerElement=16,Ji("StructArrayLayout2f1f2i16",Ea);class Ta extends xa{_refreshViews(){this.uint8=new Uint8Array(this.arrayBuffer),this.float32=new Float32Array(this.arrayBuffer),this.int16=new Int16Array(this.arrayBuffer);}emplaceBack(t,e,r,n,i,s){const a=this.length;return this.resize(a+1),this.emplace(a,t,e,r,n,i,s)}emplace(t,e,r,n,i,s,a){const o=16*t,l=4*t,u=8*t;return this.uint8[o+0]=e,this.uint8[o+1]=r,this.float32[l+1]=n,this.float32[l+2]=i,this.int16[u+6]=s,this.int16[u+7]=a,t}}Ta.prototype.bytesPerElement=16,Ji("StructArrayLayout2ub2f2i16",Ta);class Fa extends xa{_refreshViews(){this.uint8=new Uint8Array(this.arrayBuffer),this.uint16=new Uint16Array(this.arrayBuffer);}emplaceBack(t,e,r){const n=this.length;return this.resize(n+1),this.emplace(n,t,e,r)}emplace(t,e,r,n){const i=3*t;return this.uint16[i+0]=e,this.uint16[i+1]=r,this.uint16[i+2]=n,t}}Fa.prototype.bytesPerElement=6,Ji("StructArrayLayout3ui6",Fa);class La extends xa{_refreshViews(){this.uint8=new Uint8Array(this.arrayBuffer),this.int16=new Int16Array(this.arrayBuffer),this.uint16=new Uint16Array(this.arrayBuffer),this.uint32=new Uint32Array(this.arrayBuffer),this.float32=new Float32Array(this.arrayBuffer);}emplaceBack(t,e,r,n,i,s,a,o,l,u,c,h,p,f,d,y,m){const g=this.length;return this.resize(g+1),this.emplace(g,t,e,r,n,i,s,a,o,l,u,c,h,p,f,d,y,m)}emplace(t,e,r,n,i,s,a,o,l,u,c,h,p,f,d,y,m,g){const x=24*t,v=12*t,b=48*t;return this.int16[x+0]=e,this.int16[x+1]=r,this.uint16[x+2]=n,this.uint16[x+3]=i,this.uint32[v+2]=s,this.uint32[v+3]=a,this.uint32[v+4]=o,this.uint16[x+10]=l,this.uint16[x+11]=u,this.uint16[x+12]=c,this.float32[v+7]=h,this.float32[v+8]=p,this.uint8[b+36]=f,this.uint8[b+37]=d,this.uint8[b+38]=y,this.uint32[v+10]=m,this.int16[x+22]=g,t}}La.prototype.bytesPerElement=48,Ji("StructArrayLayout2i2ui3ul3ui2f3ub1ul1i48",La);class Da extends xa{_refreshViews(){this.uint8=new Uint8Array(this.arrayBuffer),this.int16=new Int16Array(this.arrayBuffer),this.uint16=new Uint16Array(this.arrayBuffer),this.uint32=new Uint32Array(this.arrayBuffer),this.float32=new Float32Array(this.arrayBuffer);}emplaceBack(t,e,r,n,i,s,a,o,l,u,c,h,p,f,d,y,m,g,x,v,b,w,_,S,A,k,M,I){const z=this.length;return this.resize(z+1),this.emplace(z,t,e,r,n,i,s,a,o,l,u,c,h,p,f,d,y,m,g,x,v,b,w,_,S,A,k,M,I)}emplace(t,e,r,n,i,s,a,o,l,u,c,h,p,f,d,y,m,g,x,v,b,w,_,S,A,k,M,I,z){const P=32*t,C=16*t;return this.int16[P+0]=e,this.int16[P+1]=r,this.int16[P+2]=n,this.int16[P+3]=i,this.int16[P+4]=s,this.int16[P+5]=a,this.int16[P+6]=o,this.int16[P+7]=l,this.uint16[P+8]=u,this.uint16[P+9]=c,this.uint16[P+10]=h,this.uint16[P+11]=p,this.uint16[P+12]=f,this.uint16[P+13]=d,this.uint16[P+14]=y,this.uint16[P+15]=m,this.uint16[P+16]=g,this.uint16[P+17]=x,this.uint16[P+18]=v,this.uint16[P+19]=b,this.uint16[P+20]=w,this.uint16[P+21]=_,this.uint16[P+22]=S,this.uint32[C+12]=A,this.float32[C+13]=k,this.float32[C+14]=M,this.uint16[P+30]=I,this.uint16[P+31]=z,t}}Da.prototype.bytesPerElement=64,Ji("StructArrayLayout8i15ui1ul2f2ui64",Da);class $a extends xa{_refreshViews(){this.uint8=new Uint8Array(this.arrayBuffer),this.float32=new Float32Array(this.arrayBuffer);}emplaceBack(t){const e=this.length;return this.resize(e+1),this.emplace(e,t)}emplace(t,e){return this.float32[1*t+0]=e,t}}$a.prototype.bytesPerElement=4,Ji("StructArrayLayout1f4",$a);class Oa extends xa{_refreshViews(){this.uint8=new Uint8Array(this.arrayBuffer),this.uint16=new Uint16Array(this.arrayBuffer),this.float32=new Float32Array(this.arrayBuffer);}emplaceBack(t,e,r){const n=this.length;return this.resize(n+1),this.emplace(n,t,e,r)}emplace(t,e,r,n){const i=3*t;return this.uint16[6*t+0]=e,this.float32[i+1]=r,this.float32[i+2]=n,t}}Oa.prototype.bytesPerElement=12,Ji("StructArrayLayout1ui2f12",Oa);class Ra extends xa{_refreshViews(){this.uint8=new Uint8Array(this.arrayBuffer),this.uint32=new Uint32Array(this.arrayBuffer),this.uint16=new Uint16Array(this.arrayBuffer);}emplaceBack(t,e,r){const n=this.length;return this.resize(n+1),this.emplace(n,t,e,r)}emplace(t,e,r,n){const i=4*t;return this.uint32[2*t+0]=e,this.uint16[i+2]=r,this.uint16[i+3]=n,t}}Ra.prototype.bytesPerElement=8,Ji("StructArrayLayout1ul2ui8",Ra);class ja extends xa{_refreshViews(){this.uint8=new Uint8Array(this.arrayBuffer),this.uint16=new Uint16Array(this.arrayBuffer);}emplaceBack(t,e){const r=this.length;return this.resize(r+1),this.emplace(r,t,e)}emplace(t,e,r){const n=2*t;return this.uint16[n+0]=e,this.uint16[n+1]=r,t}}ja.prototype.bytesPerElement=4,Ji("StructArrayLayout2ui4",ja);class Na extends xa{_refreshViews(){this.uint8=new Uint8Array(this.arrayBuffer),this.uint16=new Uint16Array(this.arrayBuffer);}emplaceBack(t){const e=this.length;return this.resize(e+1),this.emplace(e,t)}emplace(t,e){return this.uint16[1*t+0]=e,t}}Na.prototype.bytesPerElement=2,Ji("StructArrayLayout1ui2",Na);class Ua extends xa{_refreshViews(){this.uint8=new Uint8Array(this.arrayBuffer),this.float32=new Float32Array(this.arrayBuffer);}emplaceBack(t,e,r,n){const i=this.length;return this.resize(i+1),this.emplace(i,t,e,r,n)}emplace(t,e,r,n,i){const s=4*t;return this.float32[s+0]=e,this.float32[s+1]=r,this.float32[s+2]=n,this.float32[s+3]=i,t}}Ua.prototype.bytesPerElement=16,Ji("StructArrayLayout4f16",Ua);class qa extends ga{get anchorPointX(){return this._structArray.int16[this._pos2+0]}get anchorPointY(){return this._structArray.int16[this._pos2+1]}get x1(){return this._structArray.int16[this._pos2+2]}get y1(){return this._structArray.int16[this._pos2+3]}get x2(){return this._structArray.int16[this._pos2+4]}get y2(){return this._structArray.int16[this._pos2+5]}get featureIndex(){return this._structArray.uint32[this._pos4+3]}get sourceLayerIndex(){return this._structArray.uint16[this._pos2+8]}get bucketIndex(){return this._structArray.uint16[this._pos2+9]}get anchorPoint(){return new l(this.anchorPointX,this.anchorPointY)}}qa.prototype.size=20;class Ga extends Ba{get(t){return new qa(this,t)}}Ji("CollisionBoxArray",Ga);class Za extends ga{get anchorX(){return this._structArray.int16[this._pos2+0]}get anchorY(){return this._structArray.int16[this._pos2+1]}get glyphStartIndex(){return this._structArray.uint16[this._pos2+2]}get numGlyphs(){return this._structArray.uint16[this._pos2+3]}get vertexStartIndex(){return this._structArray.uint32[this._pos4+2]}get lineStartIndex(){return this._structArray.uint32[this._pos4+3]}get lineLength(){return this._structArray.uint32[this._pos4+4]}get segment(){return this._structArray.uint16[this._pos2+10]}get lowerSize(){return this._structArray.uint16[this._pos2+11]}get upperSize(){return this._structArray.uint16[this._pos2+12]}get lineOffsetX(){return this._structArray.float32[this._pos4+7]}get lineOffsetY(){return this._structArray.float32[this._pos4+8]}get writingMode(){return this._structArray.uint8[this._pos1+36]}get placedOrientation(){return this._structArray.uint8[this._pos1+37]}set placedOrientation(t){this._structArray.uint8[this._pos1+37]=t;}get hidden(){return this._structArray.uint8[this._pos1+38]}set hidden(t){this._structArray.uint8[this._pos1+38]=t;}get crossTileID(){return this._structArray.uint32[this._pos4+10]}set crossTileID(t){this._structArray.uint32[this._pos4+10]=t;}get associatedIconIndex(){return this._structArray.int16[this._pos2+22]}}Za.prototype.size=48;class Xa extends La{get(t){return new Za(this,t)}}Ji("PlacedSymbolArray",Xa);class Ka extends ga{get anchorX(){return this._structArray.int16[this._pos2+0]}get anchorY(){return this._structArray.int16[this._pos2+1]}get rightJustifiedTextSymbolIndex(){return this._structArray.int16[this._pos2+2]}get centerJustifiedTextSymbolIndex(){return this._structArray.int16[this._pos2+3]}get leftJustifiedTextSymbolIndex(){return this._structArray.int16[this._pos2+4]}get verticalPlacedTextSymbolIndex(){return this._structArray.int16[this._pos2+5]}get placedIconSymbolIndex(){return this._structArray.int16[this._pos2+6]}get verticalPlacedIconSymbolIndex(){return this._structArray.int16[this._pos2+7]}get key(){return this._structArray.uint16[this._pos2+8]}get textBoxStartIndex(){return this._structArray.uint16[this._pos2+9]}get textBoxEndIndex(){return this._structArray.uint16[this._pos2+10]}get verticalTextBoxStartIndex(){return this._structArray.uint16[this._pos2+11]}get verticalTextBoxEndIndex(){return this._structArray.uint16[this._pos2+12]}get iconBoxStartIndex(){return this._structArray.uint16[this._pos2+13]}get iconBoxEndIndex(){return this._structArray.uint16[this._pos2+14]}get verticalIconBoxStartIndex(){return this._structArray.uint16[this._pos2+15]}get verticalIconBoxEndIndex(){return this._structArray.uint16[this._pos2+16]}get featureIndex(){return this._structArray.uint16[this._pos2+17]}get numHorizontalGlyphVertices(){return this._structArray.uint16[this._pos2+18]}get numVerticalGlyphVertices(){return this._structArray.uint16[this._pos2+19]}get numIconVertices(){return this._structArray.uint16[this._pos2+20]}get numVerticalIconVertices(){return this._structArray.uint16[this._pos2+21]}get useRuntimeCollisionCircles(){return this._structArray.uint16[this._pos2+22]}get crossTileID(){return this._structArray.uint32[this._pos4+12]}set crossTileID(t){this._structArray.uint32[this._pos4+12]=t;}get textBoxScale(){return this._structArray.float32[this._pos4+13]}get collisionCircleDiameter(){return this._structArray.float32[this._pos4+14]}get textAnchorOffsetStartIndex(){return this._structArray.uint16[this._pos2+30]}get textAnchorOffsetEndIndex(){return this._structArray.uint16[this._pos2+31]}}Ka.prototype.size=64;class Ha extends Da{get(t){return new Ka(this,t)}}Ji("SymbolInstanceArray",Ha);class Ya extends $a{getoffsetX(t){return this.float32[1*t+0]}}Ji("GlyphOffsetArray",Ya);class Ja extends _a{getx(t){return this.int16[3*t+0]}gety(t){return this.int16[3*t+1]}gettileUnitDistanceFromAnchor(t){return this.int16[3*t+2]}}Ji("SymbolLineVertexArray",Ja);class Wa extends ga{get textAnchor(){return this._structArray.uint16[this._pos2+0]}get textOffset0(){return this._structArray.float32[this._pos4+1]}get textOffset1(){return this._structArray.float32[this._pos4+2]}}Wa.prototype.size=12;class Qa extends Oa{get(t){return new Wa(this,t)}}Ji("TextAnchorOffsetArray",Qa);class to extends ga{get featureIndex(){return this._structArray.uint32[this._pos4+0]}get sourceLayerIndex(){return this._structArray.uint16[this._pos2+2]}get bucketIndex(){return this._structArray.uint16[this._pos2+3]}}to.prototype.size=8;class eo extends Ra{get(t){return new to(this,t)}}Ji("FeatureIndexArray",eo);class ro extends wa{}class no extends wa{}class io extends wa{}class so extends Aa{}class ao extends ka{}class oo extends Ma{}class lo extends Ia{}class uo extends za{}class co extends Pa{}class ho extends Ca{}class po extends Va{}class fo extends Ta{}class yo extends Fa{}class mo extends ja{}const go=va([{name:"a_pos",components:2,type:"Int16"}],4),{members:xo}=go;class vo{constructor(t=[]){this._forceNewSegmentOnNextPrepare=!1,this.segments=t;}prepareSegment(t,e,r,n){const i=this.segments[this.segments.length-1];return t>vo.MAX_VERTEX_ARRAY_LENGTH&&j(`Max vertices per segment is ${vo.MAX_VERTEX_ARRAY_LENGTH}: bucket requested ${t}. Consider using the \`fillLargeMeshArrays\` function if you require meshes with more than ${vo.MAX_VERTEX_ARRAY_LENGTH} vertices.`),this._forceNewSegmentOnNextPrepare||!i||i.vertexLength+t>vo.MAX_VERTEX_ARRAY_LENGTH||i.sortKey!==n?this.createNewSegment(e,r,n):i}createNewSegment(t,e,r){const n={vertexOffset:t.length,primitiveOffset:e.length,vertexLength:0,primitiveLength:0,vaos:{}};return void 0!==r&&(n.sortKey=r),this._forceNewSegmentOnNextPrepare=!1,this.segments.push(n),n}getOrCreateLatestSegment(t,e,r){return this.prepareSegment(0,t,e,r)}forceNewSegmentOnNextPrepare(){this._forceNewSegmentOnNextPrepare=!0;}get(){return this.segments}destroy(){for(const t of this.segments)for(const e in t.vaos)t.vaos[e].destroy();}static simpleSegment(t,e,r,n){return new vo([{vertexOffset:t,primitiveOffset:e,vertexLength:r,primitiveLength:n,vaos:{},sortKey:0}])}}function bo(t,e){return 256*(t=E(Math.floor(t),0,255))+E(Math.floor(e),0,255)}vo.MAX_VERTEX_ARRAY_LENGTH=Math.pow(2,16)-1,Ji("SegmentVector",vo);const wo=va([{name:"a_pattern_from",components:4,type:"Uint16"},{name:"a_pattern_to",components:4,type:"Uint16"},{name:"a_pixel_ratio_from",components:1,type:"Uint16"},{name:"a_pixel_ratio_to",components:1,type:"Uint16"}]);var _o,So,Ao,ko={exports:{}},Mo={exports:{}},Io={exports:{}},zo=function(){if(Ao)return ko.exports;Ao=1;var t=(_o||(_o=1,Mo.exports=function(t,e){var r,n,i,s,a,o,l,u;for(n=t.length-(r=3&t.length),i=e,a=3432918353,o=461845907,u=0;u>>16)*a&65535)<<16)&4294967295)<<15|l>>>17))*o+(((l>>>16)*o&65535)<<16)&4294967295)<<13|i>>>19))+((5*(i>>>16)&65535)<<16)&4294967295))+((58964+(s>>>16)&65535)<<16);switch(l=0,r){case 3:l^=(255&t.charCodeAt(u+2))<<16;case 2:l^=(255&t.charCodeAt(u+1))<<8;case 1:i^=l=(65535&(l=(l=(65535&(l^=255&t.charCodeAt(u)))*a+(((l>>>16)*a&65535)<<16)&4294967295)<<15|l>>>17))*o+(((l>>>16)*o&65535)<<16)&4294967295;}return i^=t.length,i=2246822507*(65535&(i^=i>>>16))+((2246822507*(i>>>16)&65535)<<16)&4294967295,i=3266489909*(65535&(i^=i>>>13))+((3266489909*(i>>>16)&65535)<<16)&4294967295,(i^=i>>>16)>>>0}),Mo.exports),e=(So||(So=1,Io.exports=function(t,e){for(var r,n=t.length,i=e^n,s=0;n>=4;)r=1540483477*(65535&(r=255&t.charCodeAt(s)|(255&t.charCodeAt(++s))<<8|(255&t.charCodeAt(++s))<<16|(255&t.charCodeAt(++s))<<24))+((1540483477*(r>>>16)&65535)<<16),i=1540483477*(65535&i)+((1540483477*(i>>>16)&65535)<<16)^(r=1540483477*(65535&(r^=r>>>24))+((1540483477*(r>>>16)&65535)<<16)),n-=4,++s;switch(n){case 3:i^=(255&t.charCodeAt(s+2))<<16;case 2:i^=(255&t.charCodeAt(s+1))<<8;case 1:i=1540483477*(65535&(i^=255&t.charCodeAt(s)))+((1540483477*(i>>>16)&65535)<<16);}return i=1540483477*(65535&(i^=i>>>13))+((1540483477*(i>>>16)&65535)<<16),(i^=i>>>15)>>>0}),Io.exports);return ko.exports=t,ko.exports.murmur3=t,ko.exports.murmur2=e,ko.exports}(),Po=r(zo);class Co{constructor(){this.ids=[],this.positions=[],this.indexed=!1;}add(t,e,r,n){this.ids.push(Bo(t)),this.positions.push(e,r,n);}getPositions(t){if(!this.indexed)throw new Error("Trying to get index, but feature positions are not indexed");const e=Bo(t);let r=0,n=this.ids.length-1;for(;r>1;this.ids[t]>=e?n=t:r=t+1;}const i=[];for(;this.ids[r]===e;)i.push({index:this.positions[3*r],start:this.positions[3*r+1],end:this.positions[3*r+2]}),r++;return i}static serialize(t,e){const r=new Float64Array(t.ids),n=new Uint32Array(t.positions);return Vo(r,n,0,r.length-1),e&&e.push(r.buffer,n.buffer),{ids:r,positions:n}}static deserialize(t){const e=new Co;return e.ids=t.ids,e.positions=t.positions,e.indexed=!0,e}}function Bo(t){const e=+t;return !isNaN(e)&&e<=Number.MAX_SAFE_INTEGER?e:Po(String(t))}function Vo(t,e,r,n){for(;r>1];let s=r-1,a=n+1;for(;;){do{s++;}while(t[s]i);if(s>=a)break;Eo(t,s,a),Eo(e,3*s,3*a),Eo(e,3*s+1,3*a+1),Eo(e,3*s+2,3*a+2);}a-r`u_${t}`)),this.type=r;}setUniform(t,e,r){t.set(r.constantOr(this.value));}getBinding(t,e,r){return "color"===this.type?new Do(t,e):new Fo(t,e)}}class jo{constructor(t,e){this.uniformNames=e.map((t=>`u_${t}`)),this.patternFrom=null,this.patternTo=null,this.pixelRatioFrom=1,this.pixelRatioTo=1;}setConstantPatternPositions(t,e){this.pixelRatioFrom=e.pixelRatio,this.pixelRatioTo=t.pixelRatio,this.patternFrom=e.tlbr,this.patternTo=t.tlbr;}setUniform(t,e,r,n){const i="u_pattern_to"===n?this.patternTo:"u_pattern_from"===n?this.patternFrom:"u_pixel_ratio_to"===n?this.pixelRatioTo:"u_pixel_ratio_from"===n?this.pixelRatioFrom:null;i&&t.set(i);}getBinding(t,e,r){return "u_pattern"===r.substr(0,9)?new Lo(t,e):new Fo(t,e)}}class 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this._vertexDictionary.set(i,s),this._vertexBuffer.push(r,n),s}_subdivideTrianglesScanline(t){if(this._granularity<2)return function(t,e){const r=[];for(let n=0;n0?(r.push(i),r.push(a),r.push(s)):(r.push(i),r.push(s),r.push(a));}return r}(this._vertexBuffer,t);const e=[],r=t.length;for(let n=0;n=1||v<=0)||y&&(oi)){u>=n&&u<=i&&s.push(r[(t+1)%3]);continue}!y&&x>0&&s.push(this._vertexToIndex(a+p*x,o+f*x));const b=a+p*Math.max(x,0),w=a+p*Math.min(v,1);d||this._generateIntraEdgeVertices(s,a,o,l,u,b,w),!y&&v<1&&s.push(this._vertexToIndex(a+p*v,o+f*v)),(y||u>=n&&u<=i)&&s.push(r[(t+1)%3]),!y&&(u<=n||u>=i)&&this._generateInterEdgeVertices(s,a,o,l,u,c,h,w,n,i);}return s}_generateIntraEdgeVertices(t,e,r,n,i,s,a){const o=n-e,l=i-r,u=0===l,c=u?Math.min(e,n):Math.min(s,a),h=u?Math.max(e,n):Math.max(s,a),p=Math.floor(c/this._granularityCellSize)+1,f=Math.ceil(h/this._granularityCellSize)-1;if(u?e=p;n--){const i=n*this._granularityCellSize;t.push(this._vertexToIndex(i,r+l*(i-e)/o));}}_generateInterEdgeVertices(t,e,r,n,i,s,a,o,l,u){const c=i-r,h=s-n,p=a-i,f=(l-i)/p,d=(u-i)/p,y=Math.min(f,d),m=Math.max(f,d),g=n+h*y;let x=Math.floor(Math.min(g,o)/this._granularityCellSize)+1,v=Math.ceil(Math.max(g,o)/this._granularityCellSize)-1,b=o=1||m<=0){const t=r-a,n=s+(e-s)*Math.min((l-a)/t,(u-a)/t);x=Math.floor(Math.min(n,o)/this._granularityCellSize)+1,v=Math.ceil(Math.max(n,o)/this._granularityCellSize)-1,b=o0?u:l;if(b)for(let e=x;e<=v;e++)t.push(this._vertexToIndex(e*this._granularityCellSize,_));else for(let e=v;e>=x;e--)t.push(this._vertexToIndex(e*this._granularityCellSize,_));}_generateOutline(t){const e=[];for(const r of t){const t=yu(r,this._granularity,!0),n=this._pointArrayToIndices(t),i=[];for(let t=1;ti!=(s===hu)?(t.push(e),t.push(r),t.push(this._vertexToIndex(n,s)),t.push(r),t.push(this._vertexToIndex(i,s)),t.push(this._vertexToIndex(n,s))):(t.push(r),t.push(e),t.push(this._vertexToIndex(n,s)),t.push(this._vertexToIndex(i,s)),t.push(r),t.push(this._vertexToIndex(n,s)));}_fillPoles(t,e,r){const n=this._vertexBuffer,i=M,s=t.length;for(let a=2;a80*r){o=1/0,l=1/0;let e=-1/0,n=-1/0;for(let s=r;se&&(e=r),i>n&&(n=i);}u=Math.max(e-o,n-l),u=0!==u?32767/u:0;}return jl(s,a,r,o,l,u,0),a}(r,n),e=this._convertIndices(r,t);i=this._subdivideTrianglesScanline(e);}catch(t){console.error(t);}let s=[];return e&&(s=this._generateOutline(t)),this._ensureNoPoleVertices(),this._handlePoles(i),{verticesFlattened:this._vertexBuffer,indicesTriangles:i,indicesLineList:s}}_convertIndices(t,e){const r=[];for(let n=0;n0?(Math.floor(x/a)+1)*a:(Math.ceil(x/a)-1)*a,e=y>0?(Math.floor(v/a)+1)*a:(Math.ceil(v/a)-1)*a,r=Math.abs(x-t),n=Math.abs(v-e),i=Math.abs(x-c),s=Math.abs(v-h),u=p?r/m:Number.POSITIVE_INFINITY,b=f?n/g:Number.POSITIVE_INFINITY;if((i<=r||!p)&&(s<=n||!f))break;if(u=0?a-1:s-1,i=(o+1)%s,l=t[2*e[n]],u=t[2*e[i]],c=t[2*e[a]],h=t[2*e[a]+1],p=t[2*e[o]+1];let f=!1;if(lu)f=!1;else {const r=p-h,s=-(t[2*e[o]]-c),a=h((u-c)*r+(t[2*e[i]+1]-h)*s)*a&&(f=!0);}if(f){const t=e[n],i=e[a],l=e[o];t!==i&&t!==l&&i!==l&&r.push(l,i,t),a--,a<0&&(a=s-1);}else {const t=e[i],n=e[a],l=e[o];t!==n&&t!==l&&n!==l&&r.push(l,n,t),o++,o>=s&&(o=0);}if(n===i)break}}function gu(t,e,r,n,i,s,a,o,l){const u=i.length/2,c=a&&o&&l;if(uvo.MAX_VERTEX_ARRAY_LENGTH&&(u=t.createNewSegment(e,r),l=o.count,y=!0,m=!0,g=!0,c=0);const x=xu(a,n,s,o,p,y,u),v=xu(a,n,s,o,f,m,u),b=xu(a,n,s,o,d,g,u);r.emplaceBack(c+x-l,c+v-l,c+b-l),u.primitiveLength++;}}(e,r,n,i,s,t),c&&function(t,e,r,n,i,s){const a=[];for(let t=0;tvo.MAX_VERTEX_ARRAY_LENGTH&&(u=t.createNewSegment(e,r),l=o.count,d=!0,y=!0,c=0);const m=xu(a,n,s,o,i,d,u),g=xu(a,n,s,o,h,y,u);r.emplaceBack(c+m-l,c+g-l),u.primitiveLength++;}}}(a,r,o,i,l,t),e.forceNewSegmentOnNextPrepare(),null==a||a.forceNewSegmentOnNextPrepare();}function xu(t,e,r,n,i,s,a){if(s){const s=n.count;return r(e[2*i],e[2*i+1]),t[i]=n.count,n.count++,a.vertexLength++,s}return t[i]}class vu{constructor(t){this.zoom=t.zoom,this.overscaling=t.overscaling,this.layers=t.layers,this.layerIds=this.layers.map((t=>t.id)),this.index=t.index,this.hasPattern=!1,this.patternFeatures=[],this.layoutVertexArray=new io,this.indexArray=new yo,this.indexArray2=new mo,this.programConfigurations=new Zo(t.layers,t.zoom),this.segments=new vo,this.segments2=new vo,this.stateDependentLayerIds=this.layers.filter((t=>t.isStateDependent())).map((t=>t.id));}populate(t,e,r){this.hasPattern=Dl("fill",this.layers,e);const n=this.layers[0].layout.get("fill-sort-key"),i=!n.isConstant(),s=[];for(const{feature:a,id:o,index:l,sourceLayerIndex:u}of t){const t=this.layers[0]._featureFilter.needGeometry,c=Wo(a,t);if(!this.layers[0]._featureFilter.filter(new Qs(this.zoom),c,r))continue;const h=i?n.evaluate(c,{},r,e.availableImages):void 0,p={id:o,properties:a.properties,type:a.type,sourceLayerIndex:u,index:l,geometry:t?c.geometry:Jo(a),patterns:{},sortKey:h};s.push(p);}i&&s.sort(((t,e)=>t.sortKey-e.sortKey));for(const n of s){const{geometry:i,index:s,sourceLayerIndex:a}=n;if(this.hasPattern){const t=$l("fill",this.layers,n,this.zoom,e);this.patternFeatures.push(t);}else this.addFeature(n,i,s,r,{},e.subdivisionGranularity);e.featureIndex.insert(t[s].feature,i,s,a,this.index);}}update(t,e,r){this.stateDependentLayers.length&&this.programConfigurations.updatePaintArrays(t,e,this.stateDependentLayers,r);}addFeatures(t,e,r){for(const n of this.patternFeatures)this.addFeature(n,n.geometry,n.index,e,r,t.subdivisionGranularity);}isEmpty(){return 0===this.layoutVertexArray.length}uploadPending(){return !this.uploaded||this.programConfigurations.needsUpload}upload(t){this.uploaded||(this.layoutVertexBuffer=t.createVertexBuffer(this.layoutVertexArray,Ll),this.indexBuffer=t.createIndexBuffer(this.indexArray),this.indexBuffer2=t.createIndexBuffer(this.indexArray2)),this.programConfigurations.upload(t),this.uploaded=!0;}destroy(){this.layoutVertexBuffer&&(this.layoutVertexBuffer.destroy(),this.indexBuffer.destroy(),this.indexBuffer2.destroy(),this.programConfigurations.destroy(),this.segments.destroy(),this.segments2.destroy());}addFeature(t,e,r,n,i,s){for(const t of Fe(e,500)){const e=du(t,n,s.fill.getGranularityForZoomLevel(n.z)),r=this.layoutVertexArray;gu(((t,e)=>{r.emplaceBack(t,e);}),this.segments,this.layoutVertexArray,this.indexArray,e.verticesFlattened,e.indicesTriangles,this.segments2,this.indexArray2,e.indicesLineList);}this.programConfigurations.populatePaintArrays(this.layoutVertexArray.length,t,r,i,n);}}let bu,wu;Ji("FillBucket",vu,{omit:["layers","patternFeatures"]});var _u={get paint(){return wu=wu||new fa({"fill-antialias":new la(ut.paint_fill["fill-antialias"]),"fill-opacity":new ua(ut.paint_fill["fill-opacity"]),"fill-color":new ua(ut.paint_fill["fill-color"]),"fill-outline-color":new ua(ut.paint_fill["fill-outline-color"]),"fill-translate":new la(ut.paint_fill["fill-translate"]),"fill-translate-anchor":new la(ut.paint_fill["fill-translate-anchor"]),"fill-pattern":new ca(ut.paint_fill["fill-pattern"])})},get layout(){return bu=bu||new fa({"fill-sort-key":new ua(ut.layout_fill["fill-sort-key"])})}};class Su extends ya{constructor(t){super(t,_u);}recalculate(t,e){super.recalculate(t,e);const r=this.paint._values["fill-outline-color"];"constant"===r.value.kind&&void 0===r.value.value&&(this.paint._values["fill-outline-color"]=this.paint._values["fill-color"]);}createBucket(t){return new vu(t)}queryRadius(){return dl(this.paint.get("fill-translate"))}queryIntersectsFeature(t,e,r,n,i,s,a){return il(yl(t,this.paint.get("fill-translate"),this.paint.get("fill-translate-anchor"),-s.bearingInRadians,a),n)}isTileClipped(){return !0}}const Au=va([{name:"a_pos",components:2,type:"Int16"},{name:"a_normal_ed",components:4,type:"Int16"}],4),ku=va([{name:"a_centroid",components:2,type:"Int16"}],4),{members:Mu}=Au,Iu=Ms.VectorTileFeature.types,zu=Math.pow(2,13);function Pu(t,e,r,n,i,s,a,o){t.emplaceBack(e,r,2*Math.floor(n*zu)+a,i*zu*2,s*zu*2,Math.round(o));}class Cu{constructor(t){this.zoom=t.zoom,this.overscaling=t.overscaling,this.layers=t.layers,this.layerIds=this.layers.map((t=>t.id)),this.index=t.index,this.hasPattern=!1,this.layoutVertexArray=new so,this.centroidVertexArray=new ro,this.indexArray=new yo,this.programConfigurations=new Zo(t.layers,t.zoom),this.segments=new vo,this.stateDependentLayerIds=this.layers.filter((t=>t.isStateDependent())).map((t=>t.id));}populate(t,e,r){this.features=[],this.hasPattern=Dl("fill-extrusion",this.layers,e);for(const{feature:n,id:i,index:s,sourceLayerIndex:a}of t){const t=this.layers[0]._featureFilter.needGeometry,o=Wo(n,t);if(!this.layers[0]._featureFilter.filter(new Qs(this.zoom),o,r))continue;const l={id:i,sourceLayerIndex:a,index:s,geometry:t?o.geometry:Jo(n),properties:n.properties,type:n.type,patterns:{}};this.hasPattern?this.features.push($l("fill-extrusion",this.layers,l,this.zoom,e)):this.addFeature(l,l.geometry,s,r,{},e.subdivisionGranularity),e.featureIndex.insert(n,l.geometry,s,a,this.index,!0);}}addFeatures(t,e,r){for(const n of this.features){const{geometry:i}=n;this.addFeature(n,i,n.index,e,r,t.subdivisionGranularity);}}update(t,e,r){this.stateDependentLayers.length&&this.programConfigurations.updatePaintArrays(t,e,this.stateDependentLayers,r);}isEmpty(){return 0===this.layoutVertexArray.length&&0===this.centroidVertexArray.length}uploadPending(){return !this.uploaded||this.programConfigurations.needsUpload}upload(t){this.uploaded||(this.layoutVertexBuffer=t.createVertexBuffer(this.layoutVertexArray,Mu),this.centroidVertexBuffer=t.createVertexBuffer(this.centroidVertexArray,ku.members,!0),this.indexBuffer=t.createIndexBuffer(this.indexArray)),this.programConfigurations.upload(t),this.uploaded=!0;}destroy(){this.layoutVertexBuffer&&(this.layoutVertexBuffer.destroy(),this.indexBuffer.destroy(),this.programConfigurations.destroy(),this.segments.destroy(),this.centroidVertexBuffer.destroy());}addFeature(t,e,r,n,i,s){for(const r of Fe(e,500)){const e={x:0,y:0,sampleCount:0},i=this.layoutVertexArray.length;this.processPolygon(e,n,t,r,s);const a=this.layoutVertexArray.length-i,o=Math.floor(e.x/e.sampleCount),l=Math.floor(e.y/e.sampleCount);for(let t=0;t{Pu(u,t,e,0,0,1,1,0);}),this.segments,this.layoutVertexArray,this.indexArray,l.verticesFlattened,l.indicesTriangles);}_generateSideFaces(t,e){let r=0;for(let n=1;nvo.MAX_VERTEX_ARRAY_LENGTH&&(e.segment=this.segments.prepareSegment(4,this.layoutVertexArray,this.indexArray));const a=i.sub(s)._perp()._unit(),o=s.dist(i);r+o>32768&&(r=0),Pu(this.layoutVertexArray,i.x,i.y,a.x,a.y,0,0,r),Pu(this.layoutVertexArray,i.x,i.y,a.x,a.y,0,1,r),r+=o,Pu(this.layoutVertexArray,s.x,s.y,a.x,a.y,0,0,r),Pu(this.layoutVertexArray,s.x,s.y,a.x,a.y,0,1,r);const l=e.segment.vertexLength;this.indexArray.emplaceBack(l,l+2,l+1),this.indexArray.emplaceBack(l+1,l+2,l+3),e.segment.vertexLength+=4,e.segment.primitiveLength+=2;}}}function Bu(t,e){for(let r=0;rM)||t.y===e.y&&(t.y<0||t.y>M)}function Eu(t){return t.every((t=>t.x<0))||t.every((t=>t.x>M))||t.every((t=>t.y<0))||t.every((t=>t.y>M))}let Tu;Ji("FillExtrusionBucket",Cu,{omit:["layers","features"]});var Fu={get paint(){return Tu=Tu||new fa({"fill-extrusion-opacity":new la(ut["paint_fill-extrusion"]["fill-extrusion-opacity"]),"fill-extrusion-color":new ua(ut["paint_fill-extrusion"]["fill-extrusion-color"]),"fill-extrusion-translate":new la(ut["paint_fill-extrusion"]["fill-extrusion-translate"]),"fill-extrusion-translate-anchor":new la(ut["paint_fill-extrusion"]["fill-extrusion-translate-anchor"]),"fill-extrusion-pattern":new ca(ut["paint_fill-extrusion"]["fill-extrusion-pattern"]),"fill-extrusion-height":new ua(ut["paint_fill-extrusion"]["fill-extrusion-height"]),"fill-extrusion-base":new ua(ut["paint_fill-extrusion"]["fill-extrusion-base"]),"fill-extrusion-vertical-gradient":new la(ut["paint_fill-extrusion"]["fill-extrusion-vertical-gradient"])})}};class Lu extends ya{constructor(t){super(t,Fu);}createBucket(t){return new Cu(t)}queryRadius(){return dl(this.paint.get("fill-extrusion-translate"))}is3D(){return !0}queryIntersectsFeature(t,e,r,n,i,s,a,o){const u=yl(t,this.paint.get("fill-extrusion-translate"),this.paint.get("fill-extrusion-translate-anchor"),-s.bearingInRadians,a),c=this.paint.get("fill-extrusion-height").evaluate(e,r),h=this.paint.get("fill-extrusion-base").evaluate(e,r),p=function(t,e,r,n){const i=[];for(const r of t){const t=[r.x,r.y,0,1];_(t,t,e),i.push(new l(t[0]/t[3],t[1]/t[3]));}return i}(u,o),f=function(t,e,r,n){const i=[],s=[],a=n[8]*e,o=n[9]*e,u=n[10]*e,c=n[11]*e,h=n[8]*r,p=n[9]*r,f=n[10]*r,d=n[11]*r;for(const e of t){const t=[],r=[];for(const i of e){const e=i.x,s=i.y,y=n[0]*e+n[4]*s+n[12],m=n[1]*e+n[5]*s+n[13],g=n[2]*e+n[6]*s+n[14],x=n[3]*e+n[7]*s+n[15],v=g+u,b=x+c,w=y+h,_=m+p,S=g+f,A=x+d,k=new l((y+a)/b,(m+o)/b);k.z=v/b,t.push(k);const M=new l(w/A,_/A);M.z=S/A,r.push(M);}i.push(t),s.push(r);}return [i,s]}(n,h,c,o);return function(t,e,r){let n=1/0;il(r,e)&&(n=$u(r,e[0]));for(let i=0;it.id)),this.index=t.index,this.hasPattern=!1,this.patternFeatures=[],this.lineClipsArray=[],this.gradients={},this.layers.forEach((t=>{this.gradients[t.id]={};})),this.layoutVertexArray=new ao,this.layoutVertexArray2=new oo,this.indexArray=new yo,this.programConfigurations=new Zo(t.layers,t.zoom),this.segments=new vo,this.maxLineLength=0,this.stateDependentLayerIds=this.layers.filter((t=>t.isStateDependent())).map((t=>t.id));}populate(t,e,r){this.hasPattern=Dl("line",this.layers,e);const n=this.layers[0].layout.get("line-sort-key"),i=!n.isConstant(),s=[];for(const{feature:e,id:a,index:o,sourceLayerIndex:l}of t){const t=this.layers[0]._featureFilter.needGeometry,u=Wo(e,t);if(!this.layers[0]._featureFilter.filter(new Qs(this.zoom),u,r))continue;const c=i?n.evaluate(u,{},r):void 0,h={id:a,properties:e.properties,type:e.type,sourceLayerIndex:l,index:o,geometry:t?u.geometry:Jo(e),patterns:{},sortKey:c};s.push(h);}i&&s.sort(((t,e)=>t.sortKey-e.sortKey));for(const n of s){const{geometry:i,index:s,sourceLayerIndex:a}=n;if(this.hasPattern){const t=$l("line",this.layers,n,this.zoom,e);this.patternFeatures.push(t);}else this.addFeature(n,i,s,r,{},e.subdivisionGranularity);e.featureIndex.insert(t[s].feature,i,s,a,this.index);}}update(t,e,r){this.stateDependentLayers.length&&this.programConfigurations.updatePaintArrays(t,e,this.stateDependentLayers,r);}addFeatures(t,e,r){for(const n of this.patternFeatures)this.addFeature(n,n.geometry,n.index,e,r,t.subdivisionGranularity);}isEmpty(){return 0===this.layoutVertexArray.length}uploadPending(){return !this.uploaded||this.programConfigurations.needsUpload}upload(t){this.uploaded||(0!==this.layoutVertexArray2.length&&(this.layoutVertexBuffer2=t.createVertexBuffer(this.layoutVertexArray2,Nu)),this.layoutVertexBuffer=t.createVertexBuffer(this.layoutVertexArray,Ru),this.indexBuffer=t.createIndexBuffer(this.indexArray)),this.programConfigurations.upload(t),this.uploaded=!0;}destroy(){this.layoutVertexBuffer&&(this.layoutVertexBuffer.destroy(),this.indexBuffer.destroy(),this.programConfigurations.destroy(),this.segments.destroy());}lineFeatureClips(t){if(t.properties&&Object.prototype.hasOwnProperty.call(t.properties,"mapbox_clip_start")&&Object.prototype.hasOwnProperty.call(t.properties,"mapbox_clip_end"))return {start:+t.properties.mapbox_clip_start,end:+t.properties.mapbox_clip_end}}addFeature(t,e,r,n,i,s){const a=this.layers[0].layout,o=a.get("line-join").evaluate(t,{}),l=a.get("line-cap"),u=a.get("line-miter-limit"),c=a.get("line-round-limit");this.lineClips=this.lineFeatureClips(t);for(const r of e)this.addLine(r,t,o,l,u,c,n,s);this.programConfigurations.populatePaintArrays(this.layoutVertexArray.length,t,r,i,n);}addLine(t,e,r,n,i,s,a,o){if(this.distance=0,this.scaledDistance=0,this.totalDistance=0,t=yu(t,a?o.line.getGranularityForZoomLevel(a.z):1),this.lineClips){this.lineClipsArray.push(this.lineClips);for(let e=0;e=2&&t[u-1].equals(t[u-2]);)u--;let c=0;for(;c0;if(w&&e>c){const t=f.dist(d);if(t>2*h){const e=f.sub(f.sub(d)._mult(h/t)._round());this.updateDistance(d,e),this.addCurrentVertex(e,m,0,0,p),d=e;}}const S=d&&y;let A=S?r:l?"butt":n;if(S&&"round"===A&&(vi&&(A="bevel"),"bevel"===A&&(v>2&&(A="flipbevel"),v100)a=g.mult(-1);else {const t=v*m.add(g).mag()/m.sub(g).mag();a._perp()._mult(t*(_?-1:1));}this.addCurrentVertex(f,a,0,0,p),this.addCurrentVertex(f,a.mult(-1),0,0,p);}else if("bevel"===A||"fakeround"===A){const t=-Math.sqrt(v*v-1),e=_?t:0,r=_?0:t;if(d&&this.addCurrentVertex(f,m,e,r,p),"fakeround"===A){const t=Math.round(180*b/Math.PI/20);for(let e=1;e2*h){const e=f.add(y.sub(f)._mult(h/t)._round());this.updateDistance(f,e),this.addCurrentVertex(e,g,0,0,p),f=e;}}}}addCurrentVertex(t,e,r,n,i,s=!1){const a=e.y*n-e.x,o=-e.y-e.x*n;this.addHalfVertex(t,e.x+e.y*r,e.y-e.x*r,s,!1,r,i),this.addHalfVertex(t,a,o,s,!0,-n,i),this.distance>Gu/2&&0===this.totalDistance&&(this.distance=0,this.updateScaledDistance(),this.addCurrentVertex(t,e,r,n,i,s));}addHalfVertex({x:t,y:e},r,n,i,s,a,o){const l=.5*(this.lineClips?this.scaledDistance*(Gu-1):this.scaledDistance);this.layoutVertexArray.emplaceBack((t<<1)+(i?1:0),(e<<1)+(s?1:0),Math.round(63*r)+128,Math.round(63*n)+128,1+(0===a?0:a<0?-1:1)|(63&l)<<2,l>>6),this.lineClips&&this.layoutVertexArray2.emplaceBack((this.scaledDistance-this.lineClips.start)/(this.lineClips.end-this.lineClips.start),this.lineClipsArray.length);const u=o.vertexLength++;this.e1>=0&&this.e2>=0&&(this.indexArray.emplaceBack(this.e1,u,this.e2),o.primitiveLength++),s?this.e2=u:this.e1=u;}updateScaledDistance(){this.scaledDistance=this.lineClips?this.lineClips.start+(this.lineClips.end-this.lineClips.start)*this.distance/this.totalDistance:this.distance;}updateDistance(t,e){this.distance+=t.dist(e),this.updateScaledDistance();}}let Xu,Ku;Ji("LineBucket",Zu,{omit:["layers","patternFeatures"]});var Hu={get paint(){return Ku=Ku||new fa({"line-opacity":new ua(ut.paint_line["line-opacity"]),"line-color":new ua(ut.paint_line["line-color"]),"line-translate":new la(ut.paint_line["line-translate"]),"line-translate-anchor":new la(ut.paint_line["line-translate-anchor"]),"line-width":new ua(ut.paint_line["line-width"]),"line-gap-width":new ua(ut.paint_line["line-gap-width"]),"line-offset":new ua(ut.paint_line["line-offset"]),"line-blur":new ua(ut.paint_line["line-blur"]),"line-dasharray":new ha(ut.paint_line["line-dasharray"]),"line-pattern":new ca(ut.paint_line["line-pattern"]),"line-gradient":new pa(ut.paint_line["line-gradient"])})},get layout(){return Xu=Xu||new fa({"line-cap":new la(ut.layout_line["line-cap"]),"line-join":new ua(ut.layout_line["line-join"]),"line-miter-limit":new la(ut.layout_line["line-miter-limit"]),"line-round-limit":new la(ut.layout_line["line-round-limit"]),"line-sort-key":new ua(ut.layout_line["line-sort-key"])})}};class Yu extends ua{possiblyEvaluate(t,e){return e=new Qs(Math.floor(e.zoom),{now:e.now,fadeDuration:e.fadeDuration,zoomHistory:e.zoomHistory,transition:e.transition}),super.possiblyEvaluate(t,e)}evaluate(t,e,r,n){return e=F({},e,{zoom:Math.floor(e.zoom)}),super.evaluate(t,e,r,n)}}let Ju;class Wu extends ya{constructor(t){super(t,Hu),this.gradientVersion=0,Ju||(Ju=new Yu(Hu.paint.properties["line-width"].specification),Ju.useIntegerZoom=!0);}_handleSpecialPaintPropertyUpdate(t){if("line-gradient"===t){const t=this.gradientExpression();this.stepInterpolant=!!function(t){return void 0!==t._styleExpression}(t)&&t._styleExpression.expression instanceof Je,this.gradientVersion=(this.gradientVersion+1)%Number.MAX_SAFE_INTEGER;}}gradientExpression(){return this._transitionablePaint._values["line-gradient"].value.expression}recalculate(t,e){super.recalculate(t,e),this.paint._values["line-floorwidth"]=Ju.possiblyEvaluate(this._transitioningPaint._values["line-width"].value,t);}createBucket(t){return new Zu(t)}queryRadius(t){const e=t,r=Qu(fl("line-width",this,e),fl("line-gap-width",this,e)),n=fl("line-offset",this,e);return r/2+Math.abs(n)+dl(this.paint.get("line-translate"))}queryIntersectsFeature(t,e,r,n,i,s,a){const o=yl(t,this.paint.get("line-translate"),this.paint.get("line-translate-anchor"),-s.bearingInRadians,a),u=a/2*Qu(this.paint.get("line-width").evaluate(e,r),this.paint.get("line-gap-width").evaluate(e,r)),c=this.paint.get("line-offset").evaluate(e,r);return c&&(n=function(t,e){const r=[];for(let n=0;n=3)for(let e=0;e0?e+2*t:t}const tc=va([{name:"a_pos_offset",components:4,type:"Int16"},{name:"a_data",components:4,type:"Uint16"},{name:"a_pixeloffset",components:4,type:"Int16"}],4),ec=va([{name:"a_projected_pos",components:3,type:"Float32"}],4);va([{name:"a_fade_opacity",components:1,type:"Uint32"}],4);const rc=va([{name:"a_placed",components:2,type:"Uint8"},{name:"a_shift",components:2,type:"Float32"},{name:"a_box_real",components:2,type:"Int16"}]);va([{type:"Int16",name:"anchorPointX"},{type:"Int16",name:"anchorPointY"},{type:"Int16",name:"x1"},{type:"Int16",name:"y1"},{type:"Int16",name:"x2"},{type:"Int16",name:"y2"},{type:"Uint32",name:"featureIndex"},{type:"Uint16",name:"sourceLayerIndex"},{type:"Uint16",name:"bucketIndex"}]);const nc=va([{name:"a_pos",components:2,type:"Int16"},{name:"a_anchor_pos",components:2,type:"Int16"},{name:"a_extrude",components:2,type:"Int16"}],4),ic=va([{name:"a_pos",components:2,type:"Float32"},{name:"a_radius",components:1,type:"Float32"},{name:"a_flags",components:2,type:"Int16"}],4);function sc(t,e,r){return t.sections.forEach((t=>{t.text=function(t,e,r){const n=e.layout.get("text-transform").evaluate(r,{});return "uppercase"===n?t=t.toLocaleUpperCase():"lowercase"===n&&(t=t.toLocaleLowerCase()),Ws.applyArabicShaping&&(t=Ws.applyArabicShaping(t)),t}(t.text,e,r);})),t}va([{name:"triangle",components:3,type:"Uint16"}]),va([{type:"Int16",name:"anchorX"},{type:"Int16",name:"anchorY"},{type:"Uint16",name:"glyphStartIndex"},{type:"Uint16",name:"numGlyphs"},{type:"Uint32",name:"vertexStartIndex"},{type:"Uint32",name:"lineStartIndex"},{type:"Uint32",name:"lineLength"},{type:"Uint16",name:"segment"},{type:"Uint16",name:"lowerSize"},{type:"Uint16",name:"upperSize"},{type:"Float32",name:"lineOffsetX"},{type:"Float32",name:"lineOffsetY"},{type:"Uint8",name:"writingMode"},{type:"Uint8",name:"placedOrientation"},{type:"Uint8",name:"hidden"},{type:"Uint32",name:"crossTileID"},{type:"Int16",name:"associatedIconIndex"}]),va([{type:"Int16",name:"anchorX"},{type:"Int16",name:"anchorY"},{type:"Int16",name:"rightJustifiedTextSymbolIndex"},{type:"Int16",name:"centerJustifiedTextSymbolIndex"},{type:"Int16",name:"leftJustifiedTextSymbolIndex"},{type:"Int16",name:"verticalPlacedTextSymbolIndex"},{type:"Int16",name:"placedIconSymbolIndex"},{type:"Int16",name:"verticalPlacedIconSymbolIndex"},{type:"Uint16",name:"key"},{type:"Uint16",name:"textBoxStartIndex"},{type:"Uint16",name:"textBoxEndIndex"},{type:"Uint16",name:"verticalTextBoxStartIndex"},{type:"Uint16",name:"verticalTextBoxEndIndex"},{type:"Uint16",name:"iconBoxStartIndex"},{type:"Uint16",name:"iconBoxEndIndex"},{type:"Uint16",name:"verticalIconBoxStartIndex"},{type:"Uint16",name:"verticalIconBoxEndIndex"},{type:"Uint16",name:"featureIndex"},{type:"Uint16",name:"numHorizontalGlyphVertices"},{type:"Uint16",name:"numVerticalGlyphVertices"},{type:"Uint16",name:"numIconVertices"},{type:"Uint16",name:"numVerticalIconVertices"},{type:"Uint16",name:"useRuntimeCollisionCircles"},{type:"Uint32",name:"crossTileID"},{type:"Float32",name:"textBoxScale"},{type:"Float32",name:"collisionCircleDiameter"},{type:"Uint16",name:"textAnchorOffsetStartIndex"},{type:"Uint16",name:"textAnchorOffsetEndIndex"}]),va([{type:"Float32",name:"offsetX"}]),va([{type:"Int16",name:"x"},{type:"Int16",name:"y"},{type:"Int16",name:"tileUnitDistanceFromAnchor"}]),va([{type:"Uint16",name:"textAnchor"},{type:"Float32",components:2,name:"textOffset"}]);const ac={"!":"︕","#":"＃",$:"＄","%":"％","&":"＆","(":"︵",")":"︶","*":"＊","+":"＋",",":"︐","-":"︲",".":"・","/":"／",":":"︓",";":"︔","<":"︿","=":"＝",">":"﹀","?":"︖","@":"＠","[":"﹇","\\":"＼","]":"﹈","^":"＾",_:"︳","`":"｀","{":"︷","|":"―","}":"︸","~":"～","¢":"￠","£":"￡","¥":"￥","¦":"￤","¬":"￢","¯":"￣","–":"︲","—":"︱","‘":"﹃","’":"﹄","“":"﹁","”":"﹂","…":"︙","‧":"・","₩":"￦","、":"︑","。":"︒","〈":"︿","〉":"﹀","《":"︽","》":"︾","「":"﹁","」":"﹂","『":"﹃","』":"﹄","【":"︻","】":"︼","〔":"︹","〕":"︺","〖":"︗","〗":"︘","！":"︕","（":"︵","）":"︶","，":"︐","－":"︲","．":"・","：":"︓","；":"︔","＜":"︿","＞":"﹀","？":"︖","［":"﹇","］":"﹈","＿":"︳","｛":"︷","｜":"―","｝":"︸","｟":"︵","｠":"︶","｡":"︒","｢":"﹁","｣":"﹂"};var oc=24;const lc=3;function uc(t,e,r){1===t&&r.readMessage(cc,e);}function cc(t,e,r){if(3===t){const{id:t,bitmap:n,width:i,height:s,left:a,top:o,advance:l}=r.readMessage(hc,{});e.push({id:t,bitmap:new Il({width:i+2*lc,height:s+2*lc},n),metrics:{width:i,height:s,left:a,top:o,advance:l}});}}function hc(t,e,r){1===t?e.id=r.readVarint():2===t?e.bitmap=r.readBytes():3===t?e.width=r.readVarint():4===t?e.height=r.readVarint():5===t?e.left=r.readSVarint():6===t?e.top=r.readSVarint():7===t&&(e.advance=r.readVarint());}const pc=lc;function fc(t){let e=0,r=0;for(const n of t)e+=n.w*n.h,r=Math.max(r,n.w);t.sort(((t,e)=>e.h-t.h));const n=[{x:0,y:0,w:Math.max(Math.ceil(Math.sqrt(e/.95)),r),h:1/0}];let i=0,s=0;for(const e of t)for(let t=n.length-1;t>=0;t--){const r=n[t];if(!(e.w>r.w||e.h>r.h)){if(e.x=r.x,e.y=r.y,s=Math.max(s,e.y+e.h),i=Math.max(i,e.x+e.w),e.w===r.w&&e.h===r.h){const e=n.pop();t=0&&r>=t&&_c[this.text.charCodeAt(r)];r--)e--;this.text=this.text.substring(t,e),this.sectionIndex=this.sectionIndex.slice(t,e);}substring(t,e){const r=new bc;return r.text=this.text.substring(t,e),r.sectionIndex=this.sectionIndex.slice(t,e),r.sections=this.sections,r}toString(){return this.text}getMaxScale(){return this.sectionIndex.reduce(((t,e)=>Math.max(t,this.sections[e].scale)),0)}addTextSection(t,e){this.text+=t.text,this.sections.push(vc.forText(t.scale,t.fontStack||e));const r=this.sections.length-1;for(let e=0;e=63743?null:++this.imageSectionID:(this.imageSectionID=57344,this.imageSectionID)}}function wc(e,r,n,i,s,a,o,l,u,c,h,p,f,d,y){const m=bc.fromFeature(e,s);let g;p===t.WritingMode.vertical&&m.verticalizePunctuation();const{processBidirectionalText:x,processStyledBidirectionalText:v}=Ws;if(x&&1===m.sections.length){g=[];const t=x(m.toString(),Cc(m,c,a,r,i,d));for(const e of t){const t=new bc;t.text=e,t.sections=m.sections;for(let r=0;r0&&n>_&&(_=n);}else {const t=n[y.fontStack],e=t&&t[g];if(e&&e.rect)S=e.rect,b=e.metrics;else {const t=r[y.fontStack],e=t&&t[g];if(!e)continue;b=e.metrics;}x=(s-y.scale)*oc;}M?(e.verticalizable=!0,w.push({glyph:g,imageName:A,x:f,y:d+x,vertical:M,scale:y.scale,fontStack:y.fontStack,sectionIndex:m,metrics:b,rect:S}),f+=k*y.scale+c):(w.push({glyph:g,imageName:A,x:f,y:d+x,vertical:M,scale:y.scale,fontStack:y.fontStack,sectionIndex:m,metrics:b,rect:S}),f+=b.advance*y.scale+c);}0!==w.length&&(y=Math.max(f-c,y),Vc(w,0,w.length-1,g,_)),f=0;const S=a*s+_;b.lineOffset=Math.max(_,l),d+=S,m=Math.max(S,m),++x;}var v;const b=d-xc,{horizontalAlign:w,verticalAlign:_}=Bc(o);((function(t,e,r,n,i,s,a,o,l){const u=(e-r)*i;let c=0;c=s!==a?-o*n-xc:(-n*l+.5)*a;for(const e of t)for(const t of e.positionedGlyphs)t.x+=u,t.y+=c;}))(e.positionedLines,g,w,_,y,m,a,b,s.length),e.top+=-_*b,e.bottom=e.top+b,e.left+=-w*y,e.right=e.left+y;}(w,r,n,i,g,o,l,u,p,c,f,y),!function(t){for(const e of t)if(0!==e.positionedGlyphs.length)return !1;return !0}(b)&&w}const _c={9:!0,10:!0,11:!0,12:!0,13:!0,32:!0},Sc={10:!0,32:!0,38:!0,41:!0,43:!0,45:!0,47:!0,173:!0,183:!0,8203:!0,8208:!0,8211:!0,8231:!0},Ac={40:!0};function kc(t,e,r,n,i,s){if(e.imageName){const t=n[e.imageName];return t?t.displaySize[0]*e.scale*oc/s+i:0}{const n=r[e.fontStack],s=n&&n[t];return s?s.metrics.advance*e.scale+i:0}}function Mc(t,e,r,n){const i=Math.pow(t-e,2);return n?t=0;let u=0;for(let r=0;ru){const t=Math.ceil(s/u);i*=t/a,a=t;}return {x1:n,y1:i,x2:n+s,y2:i+a}}function Fc(t,e,r,n,i,s){const a=t.image;let o;if(a.content){const t=a.content,e=a.pixelRatio||1;o=[t[0]/e,t[1]/e,a.displaySize[0]-t[2]/e,a.displaySize[1]-t[3]/e];}const l=e.left*s,u=e.right*s;let c,h,p,f;"width"===r||"both"===r?(f=i[0]+l-n[3],h=i[0]+u+n[1]):(f=i[0]+(l+u-a.displaySize[0])/2,h=f+a.displaySize[0]);const d=e.top*s,y=e.bottom*s;return "height"===r||"both"===r?(c=i[1]+d-n[0],p=i[1]+y+n[2]):(c=i[1]+(d+y-a.displaySize[1])/2,p=c+a.displaySize[1]),{image:a,top:c,right:h,bottom:p,left:f,collisionPadding:o}}const Lc=255,Dc=128,$c=Lc*Dc;function Oc(t,e){const{expression:r}=e;if("constant"===r.kind)return {kind:"constant",layoutSize:r.evaluate(new Qs(t+1))};if("source"===r.kind)return {kind:"source"};{const{zoomStops:e,interpolationType:n}=r;let i=0;for(;it.id)),this.index=e.index,this.pixelRatio=e.pixelRatio,this.sourceLayerIndex=e.sourceLayerIndex,this.hasPattern=!1,this.hasRTLText=!1,this.sortKeyRanges=[],this.collisionCircleArray=[];const r=this.layers[0]._unevaluatedLayout._values;this.textSizeData=Oc(this.zoom,r["text-size"]),this.iconSizeData=Oc(this.zoom,r["icon-size"]);const n=this.layers[0].layout,i=n.get("symbol-sort-key"),s=n.get("symbol-z-order");this.canOverlap="never"!==Rc(n,"text-overlap","text-allow-overlap")||"never"!==Rc(n,"icon-overlap","icon-allow-overlap")||n.get("text-ignore-placement")||n.get("icon-ignore-placement"),this.sortFeaturesByKey="viewport-y"!==s&&!i.isConstant(),this.sortFeaturesByY=("viewport-y"===s||"auto"===s&&!this.sortFeaturesByKey)&&this.canOverlap,"point"===n.get("symbol-placement")&&(this.writingModes=n.get("text-writing-mode").map((e=>t.WritingMode[e]))),this.stateDependentLayerIds=this.layers.filter((t=>t.isStateDependent())).map((t=>t.id)),this.sourceID=e.sourceID;}createArrays(){this.text=new Zc(new Zo(this.layers,this.zoom,(t=>/^text/.test(t)))),this.icon=new Zc(new Zo(this.layers,this.zoom,(t=>/^icon/.test(t)))),this.glyphOffsetArray=new Ya,this.lineVertexArray=new Ja,this.symbolInstances=new Ha,this.textAnchorOffsets=new Qa;}calculateGlyphDependencies(t,e,r,n,i){for(let s=0;s0)&&("constant"!==a.value.kind||a.value.value.length>0),c="constant"!==l.value.kind||!!l.value.value||Object.keys(l.parameters).length>0,h=s.get("symbol-sort-key");if(this.features=[],!u&&!c)return;const p=r.iconDependencies,f=r.glyphDependencies,d=r.availableImages,y=new Qs(this.zoom);for(const{feature:r,id:o,index:l,sourceLayerIndex:m}of e){const e=i._featureFilter.needGeometry,g=Wo(r,e);if(!i._featureFilter.filter(y,g,n))continue;let x,v;if(e||(g.geometry=Jo(r)),u){const t=i.getValueAndResolveTokens("text-field",g,n,d),e=me.factory(t),r=this.hasRTLText=this.hasRTLText||Gc(e);(!r||"unavailable"===Ws.getRTLTextPluginStatus()||r&&Ws.isParsed())&&(x=sc(e,i,g));}if(c){const t=i.getValueAndResolveTokens("icon-image",g,n,d);v=t instanceof we?t:we.fromString(t);}if(!x&&!v)continue;const b=this.sortFeaturesByKey?h.evaluate(g,{},n):void 0;if(this.features.push({id:o,text:x,icon:v,index:l,sourceLayerIndex:m,geometry:g.geometry,properties:r.properties,type:jc[r.type],sortKey:b}),v&&(p[v.name]=!0),x){const e=a.evaluate(g,{},n).join(","),r="viewport"!==s.get("text-rotation-alignment")&&"point"!==s.get("symbol-placement");this.allowVerticalPlacement=this.writingModes&&this.writingModes.indexOf(t.WritingMode.vertical)>=0;for(const t of x.sections)if(t.image)p[t.image.name]=!0;else {const n=Rs(x.toString()),i=t.fontStack||e,s=f[i]=f[i]||{};this.calculateGlyphDependencies(t.text,s,r,this.allowVerticalPlacement,n);}}}"line"===s.get("symbol-placement")&&(this.features=function(t){const e={},r={},n=[];let i=0;function s(e){n.push(t[e]),i++;}function a(t,e,i){const s=r[t];return delete r[t],r[e]=s,n[s].geometry[0].pop(),n[s].geometry[0]=n[s].geometry[0].concat(i[0]),s}function o(t,r,i){const s=e[r];return delete e[r],e[t]=s,n[s].geometry[0].shift(),n[s].geometry[0]=i[0].concat(n[s].geometry[0]),s}function l(t,e,r){const n=r?e[0][e[0].length-1]:e[0][0];return `${t}:${n.x}:${n.y}`}for(let u=0;ut.geometry))}(this.features)),this.sortFeaturesByKey&&this.features.sort(((t,e)=>t.sortKey-e.sortKey));}update(t,e,r){this.stateDependentLayers.length&&(this.text.programConfigurations.updatePaintArrays(t,e,this.layers,r),this.icon.programConfigurations.updatePaintArrays(t,e,this.layers,r));}isEmpty(){return 0===this.symbolInstances.length&&!this.hasRTLText}uploadPending(){return !this.uploaded||this.text.programConfigurations.needsUpload||this.icon.programConfigurations.needsUpload}upload(t){!this.uploaded&&this.hasDebugData()&&(this.textCollisionBox.upload(t),this.iconCollisionBox.upload(t)),this.text.upload(t,this.sortFeaturesByY,!this.uploaded,this.text.programConfigurations.needsUpload),this.icon.upload(t,this.sortFeaturesByY,!this.uploaded,this.icon.programConfigurations.needsUpload),this.uploaded=!0;}destroyDebugData(){this.textCollisionBox.destroy(),this.iconCollisionBox.destroy();}destroy(){this.text.destroy(),this.icon.destroy(),this.hasDebugData()&&this.destroyDebugData();}addToLineVertexArray(t,e){const r=this.lineVertexArray.length;if(void 0!==t.segment){let r=t.dist(e[t.segment+1]),n=t.dist(e[t.segment]);const i={};for(let n=t.segment+1;n=0;r--)i[r]={x:e[r].x,y:e[r].y,tileUnitDistanceFromAnchor:n},r>0&&(n+=e[r-1].dist(e[r]));for(let t=0;t0}hasIconData(){return this.icon.segments.get().length>0}hasDebugData(){return this.textCollisionBox&&this.iconCollisionBox}hasTextCollisionBoxData(){return this.hasDebugData()&&this.textCollisionBox.segments.get().length>0}hasIconCollisionBoxData(){return this.hasDebugData()&&this.iconCollisionBox.segments.get().length>0}addIndicesForPlacedSymbol(t,e){const r=t.placedSymbolArray.get(e),n=r.vertexStartIndex+4*r.numGlyphs;for(let e=r.vertexStartIndex;en[t]-n[e]||i[e]-i[t])),s}addToSortKeyRanges(t,e){const r=this.sortKeyRanges[this.sortKeyRanges.length-1];r&&r.sortKey===e?r.symbolInstanceEnd=t+1:this.sortKeyRanges.push({sortKey:e,symbolInstanceStart:t,symbolInstanceEnd:t+1});}sortFeatures(t){if(this.sortFeaturesByY&&this.sortedAngle!==t&&!(this.text.segments.get().length>1||this.icon.segments.get().length>1)){this.symbolInstanceIndexes=this.getSortedSymbolIndexes(t),this.sortedAngle=t,this.text.indexArray.clear(),this.icon.indexArray.clear(),this.featureSortOrder=[];for(const t of this.symbolInstanceIndexes){const e=this.symbolInstances.get(t);this.featureSortOrder.push(e.featureIndex),[e.rightJustifiedTextSymbolIndex,e.centerJustifiedTextSymbolIndex,e.leftJustifiedTextSymbolIndex].forEach(((t,e,r)=>{t>=0&&r.indexOf(t)===e&&this.addIndicesForPlacedSymbol(this.text,t);})),e.verticalPlacedTextSymbolIndex>=0&&this.addIndicesForPlacedSymbol(this.text,e.verticalPlacedTextSymbolIndex),e.placedIconSymbolIndex>=0&&this.addIndicesForPlacedSymbol(this.icon,e.placedIconSymbolIndex),e.verticalPlacedIconSymbolIndex>=0&&this.addIndicesForPlacedSymbol(this.icon,e.verticalPlacedIconSymbolIndex);}this.text.indexBuffer&&this.text.indexBuffer.updateData(this.text.indexArray),this.icon.indexBuffer&&this.icon.indexBuffer.updateData(this.icon.indexArray);}}}let Hc,Yc;Ji("SymbolBucket",Kc,{omit:["layers","collisionBoxArray","features","compareText"]}),Kc.MAX_GLYPHS=65535,Kc.addDynamicAttributes=qc;var Jc={get paint(){return Yc=Yc||new fa({"icon-opacity":new ua(ut.paint_symbol["icon-opacity"]),"icon-color":new ua(ut.paint_symbol["icon-color"]),"icon-halo-color":new ua(ut.paint_symbol["icon-halo-color"]),"icon-halo-width":new ua(ut.paint_symbol["icon-halo-width"]),"icon-halo-blur":new ua(ut.paint_symbol["icon-halo-blur"]),"icon-translate":new la(ut.paint_symbol["icon-translate"]),"icon-translate-anchor":new la(ut.paint_symbol["icon-translate-anchor"]),"text-opacity":new ua(ut.paint_symbol["text-opacity"]),"text-color":new ua(ut.paint_symbol["text-color"],{runtimeType:Pt,getOverride:t=>t.textColor,hasOverride:t=>!!t.textColor}),"text-halo-color":new ua(ut.paint_symbol["text-halo-color"]),"text-halo-width":new ua(ut.paint_symbol["text-halo-width"]),"text-halo-blur":new ua(ut.paint_symbol["text-halo-blur"]),"text-translate":new la(ut.paint_symbol["text-translate"]),"text-translate-anchor":new la(ut.paint_symbol["text-translate-anchor"])})},get layout(){return Hc=Hc||new fa({"symbol-placement":new la(ut.layout_symbol["symbol-placement"]),"symbol-spacing":new la(ut.layout_symbol["symbol-spacing"]),"symbol-avoid-edges":new la(ut.layout_symbol["symbol-avoid-edges"]),"symbol-sort-key":new ua(ut.layout_symbol["symbol-sort-key"]),"symbol-z-order":new la(ut.layout_symbol["symbol-z-order"]),"icon-allow-overlap":new la(ut.layout_symbol["icon-allow-overlap"]),"icon-overlap":new la(ut.layout_symbol["icon-overlap"]),"icon-ignore-placement":new la(ut.layout_symbol["icon-ignore-placement"]),"icon-optional":new la(ut.layout_symbol["icon-optional"]),"icon-rotation-alignment":new la(ut.layout_symbol["icon-rotation-alignment"]),"icon-size":new ua(ut.layout_symbol["icon-size"]),"icon-text-fit":new la(ut.layout_symbol["icon-text-fit"]),"icon-text-fit-padding":new la(ut.layout_symbol["icon-text-fit-padding"]),"icon-image":new ua(ut.layout_symbol["icon-image"]),"icon-rotate":new ua(ut.layout_symbol["icon-rotate"]),"icon-padding":new ua(ut.layout_symbol["icon-padding"]),"icon-keep-upright":new la(ut.layout_symbol["icon-keep-upright"]),"icon-offset":new ua(ut.layout_symbol["icon-offset"]),"icon-anchor":new ua(ut.layout_symbol["icon-anchor"]),"icon-pitch-alignment":new la(ut.layout_symbol["icon-pitch-alignment"]),"text-pitch-alignment":new la(ut.layout_symbol["text-pitch-alignment"]),"text-rotation-alignment":new la(ut.layout_symbol["text-rotation-alignment"]),"text-field":new ua(ut.layout_symbol["text-field"]),"text-font":new ua(ut.layout_symbol["text-font"]),"text-size":new ua(ut.layout_symbol["text-size"]),"text-max-width":new ua(ut.layout_symbol["text-max-width"]),"text-line-height":new la(ut.layout_symbol["text-line-height"]),"text-letter-spacing":new ua(ut.layout_symbol["text-letter-spacing"]),"text-justify":new ua(ut.layout_symbol["text-justify"]),"text-radial-offset":new ua(ut.layout_symbol["text-radial-offset"]),"text-variable-anchor":new la(ut.layout_symbol["text-variable-anchor"]),"text-variable-anchor-offset":new ua(ut.layout_symbol["text-variable-anchor-offset"]),"text-anchor":new ua(ut.layout_symbol["text-anchor"]),"text-max-angle":new la(ut.layout_symbol["text-max-angle"]),"text-writing-mode":new la(ut.layout_symbol["text-writing-mode"]),"text-rotate":new ua(ut.layout_symbol["text-rotate"]),"text-padding":new la(ut.layout_symbol["text-padding"]),"text-keep-upright":new la(ut.layout_symbol["text-keep-upright"]),"text-transform":new ua(ut.layout_symbol["text-transform"]),"text-offset":new ua(ut.layout_symbol["text-offset"]),"text-allow-overlap":new la(ut.layout_symbol["text-allow-overlap"]),"text-overlap":new la(ut.layout_symbol["text-overlap"]),"text-ignore-placement":new la(ut.layout_symbol["text-ignore-placement"]),"text-optional":new la(ut.layout_symbol["text-optional"])})}};class Wc{constructor(t){if(void 0===t.property.overrides)throw new Error("overrides must be provided to instantiate FormatSectionOverride class");this.type=t.property.overrides?t.property.overrides.runtimeType:kt,this.defaultValue=t;}evaluate(t){if(t.formattedSection){const e=this.defaultValue.property.overrides;if(e&&e.hasOverride(t.formattedSection))return e.getOverride(t.formattedSection)}return t.feature&&t.featureState?this.defaultValue.evaluate(t.feature,t.featureState):this.defaultValue.property.specification.default}eachChild(t){this.defaultValue.isConstant()||t(this.defaultValue.value._styleExpression.expression);}outputDefined(){return !1}serialize(){return null}}Ji("FormatSectionOverride",Wc,{omit:["defaultValue"]});class Qc extends ya{constructor(t){super(t,Jc);}recalculate(t,e){if(super.recalculate(t,e),"auto"===this.layout.get("icon-rotation-alignment")&&(this.layout._values["icon-rotation-alignment"]="point"!==this.layout.get("symbol-placement")?"map":"viewport"),"auto"===this.layout.get("text-rotation-alignment")&&(this.layout._values["text-rotation-alignment"]="point"!==this.layout.get("symbol-placement")?"map":"viewport"),"auto"===this.layout.get("text-pitch-alignment")&&(this.layout._values["text-pitch-alignment"]="map"===this.layout.get("text-rotation-alignment")?"map":"viewport"),"auto"===this.layout.get("icon-pitch-alignment")&&(this.layout._values["icon-pitch-alignment"]=this.layout.get("icon-rotation-alignment")),"point"===this.layout.get("symbol-placement")){const t=this.layout.get("text-writing-mode");if(t){const e=[];for(const r of t)e.indexOf(r)<0&&e.push(r);this.layout._values["text-writing-mode"]=e;}else this.layout._values["text-writing-mode"]=["horizontal"];}this._setPaintOverrides();}getValueAndResolveTokens(t,e,r,n){const i=this.layout.get(t).evaluate(e,{},r,n),s=this._unevaluatedLayout._values[t];return s.isDataDriven()||On(s.value)||!i?i:function(t,e){return e.replace(/{([^{}]+)}/g,((e,r)=>t&&r in t?String(t[r]):""))}(e.properties,i)}createBucket(t){return new Kc(t)}queryRadius(){return 0}queryIntersectsFeature(){throw new Error("Should take a different path in FeatureIndex")}_setPaintOverrides(){for(const t of Jc.paint.overridableProperties){if(!Qc.hasPaintOverride(this.layout,t))continue;const e=this.paint.get(t),r=new Wc(e),n=new $n(r,e.property.specification);let i=null;i="constant"===e.value.kind||"source"===e.value.kind?new jn("source",n):new Nn("composite",n,e.value.zoomStops),this.paint._values[t]=new aa(e.property,i,e.parameters);}}_handleOverridablePaintPropertyUpdate(t,e,r){return !(!this.layout||e.isDataDriven()||r.isDataDriven())&&Qc.hasPaintOverride(this.layout,t)}static hasPaintOverride(t,e){const r=t.get("text-field"),n=Jc.paint.properties[e];let i=!1;const s=t=>{for(const e of t)if(n.overrides&&n.overrides.hasOverride(e))return void(i=!0)};if("constant"===r.value.kind&&r.value.value instanceof me)s(r.value.value.sections);else if("source"===r.value.kind){const t=e=>{i||(e instanceof Ie&&ke(e.value)===Tt?s(e.value.sections):e instanceof xr?s(e.sections):e.eachChild(t));},e=r.value;e._styleExpression&&t(e._styleExpression.expression);}return i}}let th;var eh={get paint(){return th=th||new fa({"background-color":new la(ut.paint_background["background-color"]),"background-pattern":new ha(ut.paint_background["background-pattern"]),"background-opacity":new la(ut.paint_background["background-opacity"])})}};class rh extends ya{constructor(t){super(t,eh);}}let nh;var ih={get paint(){return nh=nh||new fa({"raster-opacity":new la(ut.paint_raster["raster-opacity"]),"raster-hue-rotate":new la(ut.paint_raster["raster-hue-rotate"]),"raster-brightness-min":new la(ut.paint_raster["raster-brightness-min"]),"raster-brightness-max":new la(ut.paint_raster["raster-brightness-max"]),"raster-saturation":new la(ut.paint_raster["raster-saturation"]),"raster-contrast":new la(ut.paint_raster["raster-contrast"]),"raster-resampling":new la(ut.paint_raster["raster-resampling"]),"raster-fade-duration":new la(ut.paint_raster["raster-fade-duration"])})}};class sh extends ya{constructor(t){super(t,ih);}}class ah extends ya{constructor(t){super(t,{}),this.onAdd=t=>{this.implementation.onAdd&&this.implementation.onAdd(t,t.painter.context.gl);},this.onRemove=t=>{this.implementation.onRemove&&this.implementation.onRemove(t,t.painter.context.gl);},this.implementation=t;}is3D(){return "3d"===this.implementation.renderingMode}hasOffscreenPass(){return void 0!==this.implementation.prerender}recalculate(){}updateTransitions(){}hasTransition(){return !1}serialize(){throw new Error("Custom layers cannot be serialized")}}function oh(t){if("custom"===t.type)return new ah(t);switch(t.type){case"background":return new rh(t);case"circle":return new vl(t);case"fill":return new Su(t);case"fill-extrusion":return new Lu(t);case"heatmap":return new Bl(t);case"hillshade":return new Tl(t);case"line":return new Wu(t);case"raster":return new sh(t);case"symbol":return new Qc(t)}}class lh{constructor(t){this._methodToThrottle=t,this._triggered=!1,"undefined"!=typeof MessageChannel&&(this._channel=new MessageChannel,this._channel.port2.onmessage=()=>{this._triggered=!1,this._methodToThrottle();});}trigger(){this._triggered||(this._triggered=!0,this._channel?this._channel.port1.postMessage(!0):setTimeout((()=>{this._triggered=!1,this._methodToThrottle();}),0));}remove(){delete this._channel,this._methodToThrottle=()=>{};}}class uh{constructor(t,e,r,n=1,i=1,s=1,a=0){if(this.uid=t,e.height!==e.width)throw new RangeError("DEM tiles must be square");if(r&&!["mapbox","terrarium","custom"].includes(r))return void j(`"${r}" is not a valid encoding type. Valid types include "mapbox", "terrarium" and "custom".`);this.stride=e.height;const o=this.dim=e.height-2;switch(this.data=new Uint32Array(e.data.buffer),r){case"terrarium":this.redFactor=256,this.greenFactor=1,this.blueFactor=1/256,this.baseShift=32768;break;case"custom":this.redFactor=n,this.greenFactor=i,this.blueFactor=s,this.baseShift=a;break;default:this.redFactor=6553.6,this.greenFactor=25.6,this.blueFactor=.1,this.baseShift=1e4;}for(let t=0;tthis.max&&(this.max=r),r=this.dim+1||e<-1||e>=this.dim+1)throw new RangeError("out of range source coordinates for DEM data");return (e+1)*this.stride+(t+1)}unpack(t,e,r){return t*this.redFactor+e*this.greenFactor+r*this.blueFactor-this.baseShift}getPixels(){return new zl({width:this.stride,height:this.stride},new Uint8Array(this.data.buffer))}backfillBorder(t,e,r){if(this.dim!==t.dim)throw new Error("dem dimension mismatch");let n=e*this.dim,i=e*this.dim+this.dim,s=r*this.dim,a=r*this.dim+this.dim;switch(e){case-1:n=i-1;break;case 1:i=n+1;}switch(r){case-1:s=a-1;break;case 1:a=s+1;}const o=-e*this.dim,l=-r*this.dim;for(let e=s;e=this._numberToString.length)throw new Error(`Out of bounds. Index requested n=${t} can't be >= this._numberToString.length ${this._numberToString.length}`);return this._numberToString[t]}}class hh{constructor(t,e,r,n,i){this.type="Feature",this._vectorTileFeature=t,t._z=e,t._x=r,t._y=n,this.properties=t.properties,this.id=i;}get geometry(){return void 0===this._geometry&&(this._geometry=this._vectorTileFeature.toGeoJSON(this._vectorTileFeature._x,this._vectorTileFeature._y,this._vectorTileFeature._z).geometry),this._geometry}set geometry(t){this._geometry=t;}toJSON(){const t={geometry:this.geometry};for(const e in this)"_geometry"!==e&&"_vectorTileFeature"!==e&&(t[e]=this[e]);return t}}class ph{constructor(t,e){this.tileID=t,this.x=t.canonical.x,this.y=t.canonical.y,this.z=t.canonical.z,this.grid=new lt(M,16,0),this.grid3D=new lt(M,16,0),this.featureIndexArray=new eo,this.promoteId=e;}insert(t,e,r,n,i,s){const a=this.featureIndexArray.length;this.featureIndexArray.emplaceBack(r,n,i);const o=s?this.grid3D:this.grid;for(let t=0;t=0&&n[3]>=0&&o.insert(a,n[0],n[1],n[2],n[3]);}}loadVTLayers(){return this.vtLayers||(this.vtLayers=new Ms.VectorTile(new bs(this.rawTileData)).layers,this.sourceLayerCoder=new ch(this.vtLayers?Object.keys(this.vtLayers).sort():["_geojsonTileLayer"])),this.vtLayers}query(t,e,r,n){this.loadVTLayers();const i=t.params,s=M/t.tileSize/t.scale,a=Kn(i.filter),o=t.queryGeometry,u=t.queryPadding*s,c=dh(o),h=this.grid.query(c.minX-u,c.minY-u,c.maxX+u,c.maxY+u),p=dh(t.cameraQueryGeometry),f=this.grid3D.query(p.minX-u,p.minY-u,p.maxX+u,p.maxY+u,((e,r,n,i)=>function(t,e,r,n,i){for(const s of t)if(e<=s.x&&r<=s.y&&n>=s.x&&i>=s.y)return !0;const s=[new l(e,r),new l(e,i),new l(n,i),new l(n,r)];if(t.length>2)for(const e of s)if(hl(t,e))return !0;for(let e=0;e(p||(p=Jo(e)),r.queryIntersectsFeature(o,e,n,p,this.z,t.transform,s,t.pixelPosMatrix))));}return d}loadMatchingFeature(t,e,r,n,i,s,a,o,l,u,c){const h=this.bucketLayerIDs[e];if(s&&!h.some((t=>s.has(t))))return;const p=this.sourceLayerCoder.decode(r),f=this.vtLayers[p].feature(n);if(i.needGeometry){const t=Wo(f,!0);if(!i.filter(new Qs(this.tileID.overscaledZ),t,this.tileID.canonical))return}else if(!i.filter(new Qs(this.tileID.overscaledZ),f))return;const d=this.getId(f,p);for(let e=0;e{const a=e instanceof oa?e.get(s):null;return a&&a.evaluate?a.evaluate(r,n,i):a}))}function dh(t){let e=1/0,r=1/0,n=-1/0,i=-1/0;for(const s of t)e=Math.min(e,s.x),r=Math.min(r,s.y),n=Math.max(n,s.x),i=Math.max(i,s.y);return {minX:e,minY:r,maxX:n,maxY:i}}function yh(t,e){return e-t}function mh(t,e,r,n,i){const s=[];for(let a=0;a=n&&c.x>=n||(a.x>=n?a=new l(n,a.y+(n-a.x)/(c.x-a.x)*(c.y-a.y))._round():c.x>=n&&(c=new l(n,a.y+(n-a.x)/(c.x-a.x)*(c.y-a.y))._round()),a.y>=i&&c.y>=i||(a.y>=i?a=new l(a.x+(i-a.y)/(c.y-a.y)*(c.x-a.x),i)._round():c.y>=i&&(c=new l(a.x+(i-a.y)/(c.y-a.y)*(c.x-a.x),i)._round()),u&&a.equals(u[u.length-1])||(u=[a],s.push(u)),u.push(c)))));}}return s}Ji("FeatureIndex",ph,{omit:["rawTileData","sourceLayerCoder"]});class gh extends l{constructor(t,e,r,n){super(t,e),this.angle=r,void 0!==n&&(this.segment=n);}clone(){return new gh(this.x,this.y,this.angle,this.segment)}}function xh(t,e,r,n,i){if(void 0===e.segment||0===r)return !0;let s=e,a=e.segment+1,o=0;for(;o>-r/2;){if(a--,a<0)return !1;o-=t[a].dist(s),s=t[a];}o+=t[a].dist(t[a+1]),a++;const l=[];let u=0;for(;on;)u-=l.shift().angleDelta;if(u>i)return !1;a++,o+=e.dist(r);}return !0}function vh(t){let e=0;for(let r=0;ru){const c=(u-l)/s,h=sr.number(n.x,i.x,c),p=sr.number(n.y,i.y,c),f=new gh(h,p,i.angleTo(n),r);return f._round(),!a||xh(t,f,o,a,e)?f:void 0}l+=s;}}function Sh(t,e,r,n,i,s,a,o,l){const u=bh(n,s,a),c=wh(n,i),h=c*a,p=0===t[0].x||t[0].x===l||0===t[0].y||t[0].y===l;return e-h=0&&g=0&&x=0&&p+u<=c){const r=new gh(g,x,y,e);r._round(),n&&!xh(t,r,s,n,i)||f.push(r);}}h+=d;}return o||f.length||a||(f=Ah(t,h/2,r,n,i,s,a,!0,l)),f}Ji("Anchor",gh);const kh=dc;function Mh(t,e,r,n){const i=[],s=t.image,a=s.pixelRatio,o=s.paddedRect.w-2*kh,u=s.paddedRect.h-2*kh;let c={x1:t.left,y1:t.top,x2:t.right,y2:t.bottom};const h=s.stretchX||[[0,o]],p=s.stretchY||[[0,u]],f=(t,e)=>t+e[1]-e[0],d=h.reduce(f,0),y=p.reduce(f,0),m=o-d,g=u-y;let x=0,v=d,b=0,w=y,_=0,S=m,A=0,k=g;if(s.content&&n){const e=s.content,r=e[2]-e[0],n=e[3]-e[1];(s.textFitWidth||s.textFitHeight)&&(c=Tc(t)),x=Ih(h,0,e[0]),b=Ih(p,0,e[1]),v=Ih(h,e[0],e[2]),w=Ih(p,e[1],e[3]),_=e[0]-x,A=e[1]-b,S=r-v,k=n-w;}const M=c.x1,I=c.y1,z=c.x2-M,P=c.y2-I,C=(t,n,i,o)=>{const u=Ph(t.stretch-x,v,z,M),c=Ch(t.fixed-_,S,t.stretch,d),h=Ph(n.stretch-b,w,P,I),p=Ch(n.fixed-A,k,n.stretch,y),f=Ph(i.stretch-x,v,z,M),m=Ch(i.fixed-_,S,i.stretch,d),g=Ph(o.stretch-b,w,P,I),C=Ch(o.fixed-A,k,o.stretch,y),B=new l(u,h),V=new l(f,h),E=new l(f,g),T=new l(u,g),F=new l(c/a,p/a),L=new l(m/a,C/a),D=e*Math.PI/180;if(D){const t=Math.sin(D),e=Math.cos(D),r=[e,-t,t,e];B._matMult(r),V._matMult(r),T._matMult(r),E._matMult(r);}const 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y=null,v=null,w=null,x=null,_=Z(e,c,r-f,r+p,0,d.minX,d.maxX,l),M=Z(e,c,r+g,r+m,0,d.minX,d.maxX,l);e=null,_&&(y=Z(_,c,o-f,o+p,1,d.minY,d.maxY,l),v=Z(_,c,o+g,o+m,1,d.minY,d.maxY,l),_=null),M&&(w=Z(M,c,o-f,o+p,1,d.minY,d.maxY,l),x=Z(M,c,o+g,o+m,1,d.minY,d.maxY,l),M=null),u>1&&console.timeEnd("clipping"),a.push(y||[],t+1,2*r,2*o),a.push(v||[],t+1,2*r,2*o+1),a.push(w||[],t+1,2*r+1,2*o),a.push(x||[],t+1,2*r+1,2*o+1);}}getTile(e,t,r){e=+e,t=+t,r=+r;const o=this.options,{extent:i,debug:n}=o;if(e<0||e>24)return null;const s=1<1&&console.log("drilling down to z%d-%d-%d",e,t,r);let l,u=e,c=t,h=r;for(;!l&&u>0;)u--,c>>=1,h>>=1,l=this.tiles[te(u,c,h)];return l&&l.source?(n>1&&(console.log("found parent tile z%d-%d-%d",u,c,h),console.time("drilling down")),this.splitTile(l.source,u,c,h,e,t,r),n>1&&console.timeEnd("drilling down"),this.tiles[a]?H(this.tiles[a],i):null):null}}function te(e,t,r){return 32*((1<{s.properties=e;const t={};for(const e of a)t[e]=o[e].evaluate(n,s);return 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r=e.createExpression(t.filter,{type:"boolean","property-type":"data-driven",overridable:!1,transition:!1});if("error"===r.result)throw new Error(r.value.map((e=>`${e.key}: ${e.message}`)).join(", "));const i=o.features.filter((e=>r.value.evaluate({zoom:0},e)));o={type:"FeatureCollection",features:i};}return o}))}loadGeoJSON(t,r){return e.__awaiter(this,void 0,void 0,(function*(){const{promoteId:o}=t;if(t.request){const i=yield e.getJSON(t.request,r);return this._dataUpdateable=oe(i.data,o)?ie(i.data,o):void 0,i.data}if("string"==typeof t.data)try{const e=JSON.parse(t.data);return this._dataUpdateable=oe(e,o)?ie(e,o):void 0,e}catch(e){throw new Error(`Input data given to '${t.source}' is not a valid GeoJSON object.`)}if(!t.dataDiff)throw new Error(`Input data given to '${t.source}' is not a valid GeoJSON object.`);if(!this._dataUpdateable)throw new Error(`Cannot update existing geojson data in ${t.source}`);return function(e,t,r){var o,i,n,s;if(t.removeAll&&e.clear(),t.remove)for(const r of t.remove)e.delete(r);if(t.add)for(const o of t.add){const t=re(o,r);null!=t&&e.set(t,o);}if(t.update)for(const r of t.update){let t=e.get(r.id);if(null==t)continue;const a=!r.removeAllProperties&&((null===(o=r.removeProperties)||void 0===o?void 0:o.length)>0||(null===(i=r.addOrUpdateProperties)||void 0===i?void 0:i.length)>0);if((r.newGeometry||r.removeAllProperties||a)&&(t=Object.assign({},t),e.set(r.id,t),a&&(t.properties=Object.assign({},t.properties))),r.newGeometry&&(t.geometry=r.newGeometry),r.removeAllProperties)t.properties={};else if((null===(n=r.removeProperties)||void 0===n?void 0:n.length)>0)for(const e of r.removeProperties)Object.prototype.hasOwnProperty.call(t.properties,e)&&delete t.properties[e];if((null===(s=r.addOrUpdateProperties)||void 0===s?void 0:s.length)>0)for(const{key:e,value:o}of r.addOrUpdateProperties)t.properties[e]=o;}}(this._dataUpdateable,t.dataDiff,o),{type:"FeatureCollection",features:Array.from(this._dataUpdateable.values())}}))}removeSource(t){return e.__awaiter(this,void 0,void 0,(function*(){this._pendingRequest&&this._pendingRequest.abort();}))}getClusterExpansionZoom(e){return this._geoJSONIndex.getClusterExpansionZoom(e.clusterId)}getClusterChildren(e){return this._geoJSONIndex.getChildren(e.clusterId)}getClusterLeaves(e){return this._geoJSONIndex.getLeaves(e.clusterId,e.limit,e.offset)}}class se{constructor(t){this.self=t,this.actor=new e.Actor(t),this.layerIndexes={},this.availableImages={},this.workerSources={},this.demWorkerSources={},this.externalWorkerSourceTypes={},this.self.registerWorkerSource=(e,t)=>{if(this.externalWorkerSourceTypes[e])throw new Error(`Worker source with name "${e}" already 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this._getWorkerSource(t,r.type,r.source).getClusterLeaves(r)})))),this.actor.registerMessageHandler("LD",((e,t)=>this._getWorkerSource(e,t.type,t.source).loadData(t))),this.actor.registerMessageHandler("GD",((e,t)=>this._getWorkerSource(e,t.type,t.source).getData())),this.actor.registerMessageHandler("LT",((e,t)=>this._getWorkerSource(e,t.type,t.source).loadTile(t))),this.actor.registerMessageHandler("RT",((e,t)=>this._getWorkerSource(e,t.type,t.source).reloadTile(t))),this.actor.registerMessageHandler("AT",((e,t)=>this._getWorkerSource(e,t.type,t.source).abortTile(t))),this.actor.registerMessageHandler("RMT",((e,t)=>this._getWorkerSource(e,t.type,t.source).removeTile(t))),this.actor.registerMessageHandler("RS",((t,r)=>e.__awaiter(this,void 0,void 0,(function*(){if(!this.workerSources[t]||!this.workerSources[t][r.type]||!this.workerSources[t][r.type][r.source])return;const e=this.workerSources[t][r.type][r.source];delete this.workerSources[t][r.type][r.source],void 0!==e.removeSource&&e.removeSource(r);})))),this.actor.registerMessageHandler("RM",(t=>e.__awaiter(this,void 0,void 0,(function*(){delete this.layerIndexes[t],delete this.availableImages[t],delete this.workerSources[t],delete this.demWorkerSources[t];})))),this.actor.registerMessageHandler("SR",((t,r)=>e.__awaiter(this,void 0,void 0,(function*(){this.referrer=r;})))),this.actor.registerMessageHandler("SRPS",((e,t)=>this._syncRTLPluginState(e,t))),this.actor.registerMessageHandler("IS",((t,r)=>e.__awaiter(this,void 0,void 0,(function*(){this.self.importScripts(r);})))),this.actor.registerMessageHandler("SI",((e,t)=>this._setImages(e,t))),this.actor.registerMessageHandler("UL",((t,r)=>e.__awaiter(this,void 0,void 0,(function*(){this._getLayerIndex(t).update(r.layers,r.removedIds);})))),this.actor.registerMessageHandler("SL",((t,r)=>e.__awaiter(this,void 0,void 0,(function*(){this._getLayerIndex(t).replace(r);}))));}_setImages(t,r){return e.__awaiter(this,void 0,void 0,(function*(){this.availableImages[t]=r;for(const e in this.workerSources[t]){const o=this.workerSources[t][e];for(const e in o)o[e].availableImages=r;}}))}_syncRTLPluginState(t,r){return e.__awaiter(this,void 0,void 0,(function*(){return yield e.rtlWorkerPlugin.syncState(r,this.self.importScripts)}))}_getAvailableImages(e){let t=this.availableImages[e];return t||(t=[]),t}_getLayerIndex(t){let r=this.layerIndexes[t];return r||(r=this.layerIndexes[t]=new e.StyleLayerIndex),r}_getWorkerSource(e,r,o){if(this.workerSources[e]||(this.workerSources[e]={}),this.workerSources[e][r]||(this.workerSources[e][r]={}),!this.workerSources[e][r][o]){const i={sendAsync:(t,r)=>(t.targetMapId=e,this.actor.sendAsync(t,r))};switch(r){case"vector":this.workerSources[e][r][o]=new t(i,this._getLayerIndex(e),this._getAvailableImages(e));break;case"geojson":this.workerSources[e][r][o]=new ne(i,this._getLayerIndex(e),this._getAvailableImages(e));break;default:this.workerSources[e][r][o]=new this.externalWorkerSourceTypes[r](i,this._getLayerIndex(e),this._getAvailableImages(e));}}return this.workerSources[e][r][o]}_getDEMWorkerSource(e,t){return this.demWorkerSources[e]||(this.demWorkerSources[e]={}),this.demWorkerSources[e][t]||(this.demWorkerSources[e][t]=new r),this.demWorkerSources[e][t]}}return e.isWorker(self)&&(self.worker=new se(self)),se})); -define("index",["exports","./shared"],(function(e,t){"use strict";function i(){var e=new t.ARRAY_TYPE(4);return t.ARRAY_TYPE!=Float32Array&&(e[1]=0,e[2]=0),e[0]=1,e[3]=1,e}function r(e){return e.map((e=>{const{coordinates:i}=e.geometry,{zoom:r}=e.properties,{x:o,y:a}=t.MercatorCoordinate.fromLngLat({lng:i[0],lat:i[1]}),s=Math.pow(2,r),n=Math.floor(o*s),l=Math.floor(a*s);return {description:e.properties.place_name,tileID:[new t.OverscaledTileID(r,0,r,n,l)],zoom:r,center:i}}))}var o=[{type:"Feature",geometry:{type:"Point",coordinates:[-95.392,29.799]},properties:{place_name:"Roads, Houston, z12",zoom:12,tags:["road"]}},{type:"Feature",geometry:{type:"Point",coordinates:[-95.381,29.749]},properties:{place_name:"Roads, Houston, z13",zoom:13,tags:["road","poi_label","landuse"]}},{type:"Feature",geometry:{type:"Point",coordinates:[-73.985,40.758]},properties:{place_name:"High zoom labels, buildings, roads, New York City, z16",zoom:16,tags:["poi_label","building","road"]}},{type:"Feature",geometry:{type:"Point",coordinates:[-73.985,40.758]},properties:{place_name:"High zoom labels, buildings, roads, New York City, z17, overzoomed",zoom:17,tags:["poi_label","road","building"]}},{type:"Feature",geometry:{type:"Point",coordinates:[139.76,35.695]},properties:{place_name:"High zoom cjk labels, when using local lang, buildings, roads, Tokyo, z16",zoom:16,tags:["poi_label","building","road"]}},{type:"Feature",geometry:{type:"Point",coordinates:[139.76,35.695]},properties:{place_name:"High zoom cjk labels, when using local lang, buildings, roads, Tokyo, z17, 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e=t[r];if(e&&e.source===i&&"fill-extrusion"===e.type)return !0}else for(const e in t){const r=t[e];if(r.source===i&&"fill-extrusion"===r.type)return !0}return !1}(null!==(s=null==o?void 0:o.layers)&&void 0!==s?s:null,t,e.id),l=a.maxPitchScaleFactor(),c=e.tilesIn(r,l,n);c.sort(G);const h=[];for(const r of c)h.push({wrappedTileID:r.tileID.wrapped().key,queryResults:r.tile.queryRenderedFeatures(t,i,e._state,r.queryGeometry,r.cameraQueryGeometry,r.scale,o,a,l,j(e.transform,r.tileID))});const u=function(e){const t={},i={};for(const r of e){const e=r.queryResults,o=r.wrappedTileID,a=i[o]=i[o]||{};for(const i in e){const r=e[i],o=a[i]=a[i]||{},s=t[i]=t[i]||[];for(const e of r)o[e.featureIndex]||(o[e.featureIndex]=!0,s.push(e));}}return t}(h);for(const t in u)u[t].forEach((t=>{const i=t.feature,r=e.getFeatureState(i.layer["source-layer"],i.id);i.source=i.layer.source,i.layer["source-layer"]&&(i.sourceLayer=i.layer["source-layer"]),i.state=r;}));return u}function G(e,t){const i=e.tileID,r=t.tileID;return i.overscaledZ-r.overscaledZ||i.canonical.y-r.canonical.y||i.wrap-r.wrap||i.canonical.x-r.canonical.x}function Z(e,i,r){return t.__awaiter(this,void 0,void 0,(function*(){let o=e;if(e.url?o=(yield t.getJSON(i.transformRequest(e.url,"Source"),r)).data:yield f.frameAsync(r),!o)return null;const a=t.pick(t.extend(o,e),["tiles","minzoom","maxzoom","attribution","bounds","scheme","tileSize","encoding"]);return "vector_layers"in o&&o.vector_layers&&(a.vectorLayerIds=o.vector_layers.map((e=>e.id))),a}))}class V{constructor(e,t){e&&(t?this.setSouthWest(e).setNorthEast(t):Array.isArray(e)&&(4===e.length?this.setSouthWest([e[0],e[1]]).setNorthEast([e[2],e[3]]):this.setSouthWest(e[0]).setNorthEast(e[1])));}setNorthEast(e){return this._ne=e instanceof t.LngLat?new t.LngLat(e.lng,e.lat):t.LngLat.convert(e),this}setSouthWest(e){return this._sw=e instanceof t.LngLat?new t.LngLat(e.lng,e.lat):t.LngLat.convert(e),this}extend(e){const i=this._sw,r=this._ne;let o,a;if(e instanceof t.LngLat)o=e,a=e;else {if(!(e instanceof V))return Array.isArray(e)?4===e.length||e.every(Array.isArray)?this.extend(V.convert(e)):this.extend(t.LngLat.convert(e)):e&&("lng"in e||"lon"in e)&&"lat"in e?this.extend(t.LngLat.convert(e)):this;if(o=e._sw,a=e._ne,!o||!a)return this}return i||r?(i.lng=Math.min(o.lng,i.lng),i.lat=Math.min(o.lat,i.lat),r.lng=Math.max(a.lng,r.lng),r.lat=Math.max(a.lat,r.lat)):(this._sw=new t.LngLat(o.lng,o.lat),this._ne=new t.LngLat(a.lng,a.lat)),this}getCenter(){return new t.LngLat((this._sw.lng+this._ne.lng)/2,(this._sw.lat+this._ne.lat)/2)}getSouthWest(){return this._sw}getNorthEast(){return this._ne}getNorthWest(){return new t.LngLat(this.getWest(),this.getNorth())}getSouthEast(){return new t.LngLat(this.getEast(),this.getSouth())}getWest(){return this._sw.lng}getSouth(){return this._sw.lat}getEast(){return this._ne.lng}getNorth(){return this._ne.lat}toArray(){return [this._sw.toArray(),this._ne.toArray()]}toString(){return `LngLatBounds(${this._sw.toString()}, ${this._ne.toString()})`}isEmpty(){return !(this._sw&&this._ne)}contains(e){const{lng:i,lat:r}=t.LngLat.convert(e);let o=this._sw.lng<=i&&i<=this._ne.lng;return this._sw.lng>this._ne.lng&&(o=this._sw.lng>=i&&i>=this._ne.lng),this._sw.lat<=r&&r<=this._ne.lat&&o}static convert(e){return e instanceof V?e:e?new V(e):e}static fromLngLat(e,i=0){const r=360*i/40075017,o=r/Math.cos(Math.PI/180*e.lat);return new V(new t.LngLat(e.lng-o,e.lat-r),new t.LngLat(e.lng+o,e.lat+r))}adjustAntiMeridian(){const e=new t.LngLat(this._sw.lng,this._sw.lat),i=new t.LngLat(this._ne.lng,this._ne.lat);return new V(e,e.lng>i.lng?new t.LngLat(i.lng+360,i.lat):i)}}class q{constructor(e,t,i){this.bounds=V.convert(this.validateBounds(e)),this.minzoom=t||0,this.maxzoom=i||24;}validateBounds(e){return Array.isArray(e)&&4===e.length?[Math.max(-180,e[0]),Math.max(-90,e[1]),Math.min(180,e[2]),Math.min(90,e[3])]:[-180,-90,180,90]}contains(e){const i=Math.pow(2,e.z),r=Math.floor(t.mercatorXfromLng(this.bounds.getWest())*i),o=Math.floor(t.mercatorYfromLat(this.bounds.getNorth())*i),a=Math.ceil(t.mercatorXfromLng(this.bounds.getEast())*i),s=Math.ceil(t.mercatorYfromLat(this.bounds.getSouth())*i);return e.x>=r&&e.x=o&&e.y{this._options.tiles=e;})),this}setUrl(e){return this.setSourceProperty((()=>{this.url=e,this._options.url=e;})),this}onRemove(){this._tileJSONRequest&&(this._tileJSONRequest.abort(),this._tileJSONRequest=null);}serialize(){return t.extend({},this._options)}loadTile(e){return t.__awaiter(this,void 0,void 0,(function*(){const t=e.tileID.canonical.url(this.tiles,this.map.getPixelRatio(),this.scheme),i={request:this.map._requestManager.transformRequest(t,"Tile"),uid:e.uid,tileID:e.tileID,zoom:e.tileID.overscaledZ,tileSize:this.tileSize*e.tileID.overscaleFactor(),type:this.type,source:this.id,pixelRatio:this.map.getPixelRatio(),showCollisionBoxes:this.map.showCollisionBoxes,promoteId:this.promoteId,subdivisionGranularity:this.map.style.projection.subdivisionGranularity};i.request.collectResourceTiming=this._collectResourceTiming;let r="RT";if(e.actor&&"expired"!==e.state){if("loading"===e.state)return new Promise(((t,i)=>{e.reloadPromise={resolve:t,reject:i};}))}else e.actor=this.dispatcher.getActor(),r="LT";e.abortController=new AbortController;try{const t=yield e.actor.sendAsync({type:r,data:i},e.abortController);if(delete e.abortController,e.aborted)return;this._afterTileLoadWorkerResponse(e,t);}catch(t){if(delete e.abortController,e.aborted)return;if(t&&404!==t.status)throw t;this._afterTileLoadWorkerResponse(e,null);}}))}_afterTileLoadWorkerResponse(e,t){if(t&&t.resourceTiming&&(e.resourceTiming=t.resourceTiming),t&&this.map._refreshExpiredTiles&&e.setExpiryData(t),e.loadVectorData(t,this.map.painter),e.reloadPromise){const t=e.reloadPromise;e.reloadPromise=null,this.loadTile(e).then(t.resolve).catch(t.reject);}}abortTile(e){return t.__awaiter(this,void 0,void 0,(function*(){e.abortController&&(e.abortController.abort(),delete e.abortController),e.actor&&(yield e.actor.sendAsync({type:"AT",data:{uid:e.uid,type:this.type,source:this.id}}));}))}unloadTile(e){return t.__awaiter(this,void 0,void 0,(function*(){e.unloadVectorData(),e.actor&&(yield e.actor.sendAsync({type:"RMT",data:{uid:e.uid,type:this.type,source:this.id}}));}))}hasTransition(){return !1}}class X extends t.Evented{constructor(e,i,r,o){super(),this.id=e,this.dispatcher=r,this.setEventedParent(o),this.type="raster",this.minzoom=0,this.maxzoom=22,this.roundZoom=!0,this.scheme="xyz",this.tileSize=512,this._loaded=!1,this._options=t.extend({type:"raster"},i),t.extend(this,t.pick(i,["url","scheme","tileSize"]));}load(){return t.__awaiter(this,arguments,void 0,(function*(e=!1){this._loaded=!1,this.fire(new t.Event("dataloading",{dataType:"source"})),this._tileJSONRequest=new AbortController;try{const i=yield Z(this._options,this.map._requestManager,this._tileJSONRequest);this._tileJSONRequest=null,this._loaded=!0,i&&(t.extend(this,i),i.bounds&&(this.tileBounds=new q(i.bounds,this.minzoom,this.maxzoom)),this.fire(new t.Event("data",{dataType:"source",sourceDataType:"metadata"})),this.fire(new t.Event("data",{dataType:"source",sourceDataType:"content",sourceDataChanged:e})));}catch(e){this._tileJSONRequest=null,this.fire(new t.ErrorEvent(e));}}))}loaded(){return this._loaded}onAdd(e){this.map=e,this.load();}onRemove(){this._tileJSONRequest&&(this._tileJSONRequest.abort(),this._tileJSONRequest=null);}setSourceProperty(e){this._tileJSONRequest&&(this._tileJSONRequest.abort(),this._tileJSONRequest=null),e(),this.load(!0);}setTiles(e){return this.setSourceProperty((()=>{this._options.tiles=e;})),this}setUrl(e){return this.setSourceProperty((()=>{this.url=e,this._options.url=e;})),this}serialize(){return t.extend({},this._options)}hasTile(e){return !this.tileBounds||this.tileBounds.contains(e.canonical)}loadTile(e){return t.__awaiter(this,void 0,void 0,(function*(){const t=e.tileID.canonical.url(this.tiles,this.map.getPixelRatio(),this.scheme);e.abortController=new AbortController;try{const i=yield _.getImage(this.map._requestManager.transformRequest(t,"Tile"),e.abortController,this.map._refreshExpiredTiles);if(delete e.abortController,e.aborted)return void(e.state="unloaded");if(i&&i.data){this.map._refreshExpiredTiles&&i.cacheControl&&i.expires&&e.setExpiryData({cacheControl:i.cacheControl,expires:i.expires});const t=this.map.painter.context,r=t.gl,o=i.data;e.texture=this.map.painter.getTileTexture(o.width),e.texture?e.texture.update(o,{useMipmap:!0}):(e.texture=new y(t,o,r.RGBA,{useMipmap:!0}),e.texture.bind(r.LINEAR,r.CLAMP_TO_EDGE,r.LINEAR_MIPMAP_NEAREST)),e.state="loaded";}}catch(t){if(delete e.abortController,e.aborted)e.state="unloaded";else if(t)throw e.state="errored",t}}))}abortTile(e){return t.__awaiter(this,void 0,void 0,(function*(){e.abortController&&(e.abortController.abort(),delete e.abortController);}))}unloadTile(e){return t.__awaiter(this,void 0,void 0,(function*(){e.texture&&this.map.painter.saveTileTexture(e.texture);}))}hasTransition(){return !1}}class $ extends X{constructor(e,i,r,o){super(e,i,r,o),this.type="raster-dem",this.maxzoom=22,this._options=t.extend({type:"raster-dem"},i),this.encoding=i.encoding||"mapbox",this.redFactor=i.redFactor,this.greenFactor=i.greenFactor,this.blueFactor=i.blueFactor,this.baseShift=i.baseShift;}loadTile(e){return t.__awaiter(this,void 0,void 0,(function*(){const i=e.tileID.canonical.url(this.tiles,this.map.getPixelRatio(),this.scheme),r=this.map._requestManager.transformRequest(i,"Tile");e.neighboringTiles=this._getNeighboringTiles(e.tileID),e.abortController=new AbortController;try{const i=yield _.getImage(r,e.abortController,this.map._refreshExpiredTiles);if(delete e.abortController,e.aborted)return void(e.state="unloaded");if(i&&i.data){const r=i.data;this.map._refreshExpiredTiles&&i.cacheControl&&i.expires&&e.setExpiryData({cacheControl:i.cacheControl,expires:i.expires});const o=t.isImageBitmap(r)&&t.offscreenCanvasSupported()?r:yield this.readImageNow(r),a={type:this.type,uid:e.uid,source:this.id,rawImageData:o,encoding:this.encoding,redFactor:this.redFactor,greenFactor:this.greenFactor,blueFactor:this.blueFactor,baseShift:this.baseShift};if(!e.actor||"expired"===e.state){e.actor=this.dispatcher.getActor();const t=yield e.actor.sendAsync({type:"LDT",data:a});e.dem=t,e.needsHillshadePrepare=!0,e.needsTerrainPrepare=!0,e.state="loaded";}}}catch(t){if(delete e.abortController,e.aborted)e.state="unloaded";else if(t)throw e.state="errored",t}}))}readImageNow(e){return t.__awaiter(this,void 0,void 0,(function*(){if("undefined"!=typeof VideoFrame&&t.isOffscreenCanvasDistorted()){const i=e.width+2,r=e.height+2;try{return new t.RGBAImage({width:i,height:r},yield t.readImageUsingVideoFrame(e,-1,-1,i,r))}catch(e){}}return f.getImageData(e,1)}))}_getNeighboringTiles(e){const i=e.canonical,r=Math.pow(2,i.z),o=(i.x-1+r)%r,a=0===i.x?e.wrap-1:e.wrap,s=(i.x+1+r)%r,n=i.x+1===r?e.wrap+1:e.wrap,l={};return l[new t.OverscaledTileID(e.overscaledZ,a,i.z,o,i.y).key]={backfilled:!1},l[new t.OverscaledTileID(e.overscaledZ,n,i.z,s,i.y).key]={backfilled:!1},i.y>0&&(l[new t.OverscaledTileID(e.overscaledZ,a,i.z,o,i.y-1).key]={backfilled:!1},l[new t.OverscaledTileID(e.overscaledZ,e.wrap,i.z,i.x,i.y-1).key]={backfilled:!1},l[new t.OverscaledTileID(e.overscaledZ,n,i.z,s,i.y-1).key]={backfilled:!1}),i.y+10&&t.extend(o,{resourceTiming:r}),this.fire(new t.Event("data",Object.assign(Object.assign({},o),{sourceDataType:"metadata"}))),this.fire(new t.Event("data",Object.assign(Object.assign({},o),{sourceDataType:"content"})));}catch(e){if(this._pendingLoads--,this._removed)return void this.fire(new t.Event("dataabort",{dataType:"source"}));this.fire(new t.ErrorEvent(e));}}))}loaded(){return 0===this._pendingLoads}loadTile(e){return t.__awaiter(this,void 0,void 0,(function*(){const t=e.actor?"RT":"LT";e.actor=this.actor;const i={type:this.type,uid:e.uid,tileID:e.tileID,zoom:e.tileID.overscaledZ,maxZoom:this.maxzoom,tileSize:this.tileSize,source:this.id,pixelRatio:this.map.getPixelRatio(),showCollisionBoxes:this.map.showCollisionBoxes,promoteId:this.promoteId,subdivisionGranularity:this.map.style.projection.subdivisionGranularity};e.abortController=new AbortController;const r=yield this.actor.sendAsync({type:t,data:i},e.abortController);delete e.abortController,e.unloadVectorData(),e.aborted||e.loadVectorData(r,this.map.painter,"RT"===t);}))}abortTile(e){return t.__awaiter(this,void 0,void 0,(function*(){e.abortController&&(e.abortController.abort(),delete e.abortController),e.aborted=!0;}))}unloadTile(e){return t.__awaiter(this,void 0,void 0,(function*(){e.unloadVectorData(),yield this.actor.sendAsync({type:"RMT",data:{uid:e.uid,type:this.type,source:this.id}});}))}onRemove(){this._removed=!0,this.actor.sendAsync({type:"RS",data:{type:this.type,source:this.id}});}serialize(){return t.extend({},this._options,{type:this.type,data:this._data})}hasTransition(){return !1}}class K extends t.Evented{constructor(e,t,i,r){super(),this.flippedWindingOrder=!1,this.id=e,this.dispatcher=i,this.coordinates=t.coordinates,this.type="image",this.minzoom=0,this.maxzoom=22,this.tileSize=512,this.tiles={},this._loaded=!1,this.setEventedParent(r),this.options=t;}load(e){return t.__awaiter(this,void 0,void 0,(function*(){this._loaded=!1,this.fire(new t.Event("dataloading",{dataType:"source"})),this.url=this.options.url,this._request=new AbortController;try{const t=yield _.getImage(this.map._requestManager.transformRequest(this.url,"Image"),this._request);this._request=null,this._loaded=!0,t&&t.data&&(this.image=t.data,e&&(this.coordinates=e),this._finishLoading());}catch(e){this._request=null,this._loaded=!0,this.fire(new t.ErrorEvent(e));}}))}loaded(){return this._loaded}updateImage(e){return e.url?(this._request&&(this._request.abort(),this._request=null),this.options.url=e.url,this.load(e.coordinates).finally((()=>{this.texture=null;})),this):this}_finishLoading(){this.map&&(this.setCoordinates(this.coordinates),this.fire(new t.Event("data",{dataType:"source",sourceDataType:"metadata"})));}onAdd(e){this.map=e,this.load();}onRemove(){this._request&&(this._request.abort(),this._request=null);}setCoordinates(e){this.coordinates=e;const i=e.map(t.MercatorCoordinate.fromLngLat);var r;return this.tileID=function(e){let i=1/0,r=1/0,o=-1/0,a=-1/0;for(const t of e)i=Math.min(i,t.x),r=Math.min(r,t.y),o=Math.max(o,t.x),a=Math.max(a,t.y);const s=Math.max(o-i,a-r),n=Math.max(0,Math.floor(-Math.log(s)/Math.LN2)),l=Math.pow(2,n);return new t.CanonicalTileID(n,Math.floor((i+o)/2*l),Math.floor((r+a)/2*l))}(i),this.minzoom=this.maxzoom=this.tileID.z,this.tileCoords=i.map((e=>this.tileID.getTilePoint(e)._round())),this.flippedWindingOrder=((r=this.tileCoords)[1].x-r[0].x)*(r[2].y-r[0].y)-(r[1].y-r[0].y)*(r[2].x-r[0].x)<0,this.fire(new t.Event("data",{dataType:"source",sourceDataType:"content"})),this}prepare(){if(0===Object.keys(this.tiles).length||!this.image)return;const e=this.map.painter.context,i=e.gl;this.texture||(this.texture=new y(e,this.image,i.RGBA),this.texture.bind(i.LINEAR,i.CLAMP_TO_EDGE));let r=!1;for(const e in this.tiles){const t=this.tiles[e];"loaded"!==t.state&&(t.state="loaded",t.texture=this.texture,r=!0);}r&&this.fire(new t.Event("data",{dataType:"source",sourceDataType:"idle",sourceId:this.id}));}loadTile(e){return t.__awaiter(this,void 0,void 0,(function*(){this.tileID&&this.tileID.equals(e.tileID.canonical)?(this.tiles[String(e.tileID.wrap)]=e,e.buckets={}):e.state="errored";}))}serialize(){return {type:"image",url:this.options.url,coordinates:this.coordinates}}hasTransition(){return !1}}class Y extends K{constructor(e,t,i,r){super(e,t,i,r),this.roundZoom=!0,this.type="video",this.options=t;}load(){return t.__awaiter(this,void 0,void 0,(function*(){this._loaded=!1;const e=this.options;this.urls=[];for(const t of e.urls)this.urls.push(this.map._requestManager.transformRequest(t,"Source").url);try{const e=yield t.getVideo(this.urls);if(this._loaded=!0,!e)return;this.video=e,this.video.loop=!0,this.video.addEventListener("playing",(()=>{this.map.triggerRepaint();})),this.map&&this.video.play(),this._finishLoading();}catch(e){this.fire(new t.ErrorEvent(e));}}))}pause(){this.video&&this.video.pause();}play(){this.video&&this.video.play();}seek(e){if(this.video){const i=this.video.seekable;ei.end(0)?this.fire(new t.ErrorEvent(new t.ValidationError(`sources.${this.id}`,null,`Playback for this video can be set only between the ${i.start(0)} and ${i.end(0)}-second mark.`))):this.video.currentTime=e;}}getVideo(){return this.video}onAdd(e){this.map||(this.map=e,this.load(),this.video&&(this.video.play(),this.setCoordinates(this.coordinates)));}prepare(){if(0===Object.keys(this.tiles).length||this.video.readyState<2)return;const e=this.map.painter.context,i=e.gl;this.texture?this.video.paused||(this.texture.bind(i.LINEAR,i.CLAMP_TO_EDGE),i.texSubImage2D(i.TEXTURE_2D,0,0,0,i.RGBA,i.UNSIGNED_BYTE,this.video)):(this.texture=new y(e,this.video,i.RGBA),this.texture.bind(i.LINEAR,i.CLAMP_TO_EDGE));let r=!1;for(const e in this.tiles){const t=this.tiles[e];"loaded"!==t.state&&(t.state="loaded",t.texture=this.texture,r=!0);}r&&this.fire(new t.Event("data",{dataType:"source",sourceDataType:"idle",sourceId:this.id}));}serialize(){return {type:"video",urls:this.urls,coordinates:this.coordinates}}hasTransition(){return this.video&&!this.video.paused}}class J extends K{constructor(e,i,r,o){super(e,i,r,o),i.coordinates?Array.isArray(i.coordinates)&&4===i.coordinates.length&&!i.coordinates.some((e=>!Array.isArray(e)||2!==e.length||e.some((e=>"number"!=typeof e))))||this.fire(new t.ErrorEvent(new t.ValidationError(`sources.${e}`,null,'"coordinates" property must be an array of 4 longitude/latitude array pairs'))):this.fire(new t.ErrorEvent(new t.ValidationError(`sources.${e}`,null,'missing required property "coordinates"'))),i.animate&&"boolean"!=typeof i.animate&&this.fire(new t.ErrorEvent(new t.ValidationError(`sources.${e}`,null,'optional "animate" property must be a boolean value'))),i.canvas?"string"==typeof i.canvas||i.canvas instanceof HTMLCanvasElement||this.fire(new t.ErrorEvent(new t.ValidationError(`sources.${e}`,null,'"canvas" must be either a string representing the ID of the canvas element from which to read, or an HTMLCanvasElement instance'))):this.fire(new t.ErrorEvent(new t.ValidationError(`sources.${e}`,null,'missing required property "canvas"'))),this.options=i,this.animate=void 0===i.animate||i.animate;}load(){return t.__awaiter(this,void 0,void 0,(function*(){this._loaded=!0,this.canvas||(this.canvas=this.options.canvas instanceof HTMLCanvasElement?this.options.canvas:document.getElementById(this.options.canvas)),this.width=this.canvas.width,this.height=this.canvas.height,this._hasInvalidDimensions()?this.fire(new t.ErrorEvent(new Error("Canvas dimensions cannot be less than or equal to zero."))):(this.play=function(){this._playing=!0,this.map.triggerRepaint();},this.pause=function(){this._playing&&(this.prepare(),this._playing=!1);},this._finishLoading());}))}getCanvas(){return this.canvas}onAdd(e){this.map=e,this.load(),this.canvas&&this.animate&&this.play();}onRemove(){this.pause();}prepare(){let e=!1;if(this.canvas.width!==this.width&&(this.width=this.canvas.width,e=!0),this.canvas.height!==this.height&&(this.height=this.canvas.height,e=!0),this._hasInvalidDimensions())return;if(0===Object.keys(this.tiles).length)return;const i=this.map.painter.context,r=i.gl;this.texture?(e||this._playing)&&this.texture.update(this.canvas,{premultiply:!0}):this.texture=new y(i,this.canvas,r.RGBA,{premultiply:!0});let o=!1;for(const e in this.tiles){const t=this.tiles[e];"loaded"!==t.state&&(t.state="loaded",t.texture=this.texture,o=!0);}o&&this.fire(new t.Event("data",{dataType:"source",sourceDataType:"idle",sourceId:this.id}));}serialize(){return {type:"canvas",coordinates:this.coordinates}}hasTransition(){return this._playing}_hasInvalidDimensions(){for(const e of [this.canvas.width,this.canvas.height])if(isNaN(e)||e<=0)return !0;return !1}}const Q={},ee=e=>{switch(e){case"geojson":return H;case"image":return K;case"raster":return X;case"raster-dem":return $;case"vector":return W;case"video":return Y;case"canvas":return J}return Q[e]},te="RTLPluginLoaded";class ie extends t.Evented{constructor(){super(...arguments),this.status="unavailable",this.url=null,this.dispatcher=U();}_syncState(e){return this.status=e,this.dispatcher.broadcast("SRPS",{pluginStatus:e,pluginURL:this.url}).catch((e=>{throw this.status="error",e}))}getRTLTextPluginStatus(){return this.status}clearRTLTextPlugin(){this.status="unavailable",this.url=null;}setRTLTextPlugin(e){return t.__awaiter(this,arguments,void 0,(function*(e,t=!1){if(this.url)throw new Error("setRTLTextPlugin cannot be called multiple times.");if(this.url=f.resolveURL(e),!this.url)throw new Error(`requested url ${e} is invalid`);if("unavailable"===this.status){if(!t)return this._requestImport();this.status="deferred",this._syncState(this.status);}else if("requested"===this.status)return this._requestImport()}))}_requestImport(){return t.__awaiter(this,void 0,void 0,(function*(){yield this._syncState("loading"),this.status="loaded",this.fire(new t.Event(te));}))}lazyLoad(){"unavailable"===this.status?this.status="requested":"deferred"===this.status&&this._requestImport();}}let re=null;function oe(){return re||(re=new ie),re}class ae{constructor(e,i){this.timeAdded=0,this.fadeEndTime=0,this.tileID=e,this.uid=t.uniqueId(),this.uses=0,this.tileSize=i,this.buckets={},this.expirationTime=null,this.queryPadding=0,this.hasSymbolBuckets=!1,this.hasRTLText=!1,this.dependencies={},this.rtt=[],this.rttCoords={},this.expiredRequestCount=0,this.state="loading";}registerFadeDuration(e){const t=e+this.timeAdded;tt.getLayer(e))).filter(Boolean);if(0!==e.length){r.layers=e,r.stateDependentLayerIds&&(r.stateDependentLayers=r.stateDependentLayerIds.map((t=>e.filter((e=>e.id===t))[0])));for(const t of e)i[t.id]=r;}}return i}(e.buckets,null==i?void 0:i.style),this.hasSymbolBuckets=!1;for(const e in this.buckets){const i=this.buckets[e];if(i instanceof t.SymbolBucket){if(this.hasSymbolBuckets=!0,!r)break;i.justReloaded=!0;}}if(this.hasRTLText=!1,this.hasSymbolBuckets)for(const e in this.buckets){const i=this.buckets[e];if(i instanceof t.SymbolBucket&&i.hasRTLText){this.hasRTLText=!0,oe().lazyLoad();break}}this.queryPadding=0;for(const e in this.buckets){const t=this.buckets[e];this.queryPadding=Math.max(this.queryPadding,i.style.getLayer(e).queryRadius(t));}e.imageAtlas&&(this.imageAtlas=e.imageAtlas),e.glyphAtlasImage&&(this.glyphAtlasImage=e.glyphAtlasImage);}else this.collisionBoxArray=new t.CollisionBoxArray;}unloadVectorData(){for(const e in this.buckets)this.buckets[e].destroy();this.buckets={},this.imageAtlasTexture&&this.imageAtlasTexture.destroy(),this.imageAtlas&&(this.imageAtlas=null),this.glyphAtlasTexture&&this.glyphAtlasTexture.destroy(),this.latestFeatureIndex=null,this.state="unloaded";}getBucket(e){return this.buckets[e.id]}upload(e){for(const t in this.buckets){const i=this.buckets[t];i.uploadPending()&&i.upload(e);}const t=e.gl;this.imageAtlas&&!this.imageAtlas.uploaded&&(this.imageAtlasTexture=new y(e,this.imageAtlas.image,t.RGBA),this.imageAtlas.uploaded=!0),this.glyphAtlasImage&&(this.glyphAtlasTexture=new y(e,this.glyphAtlasImage,t.ALPHA),this.glyphAtlasImage=null);}prepare(e){this.imageAtlas&&this.imageAtlas.patchUpdatedImages(e,this.imageAtlasTexture);}queryRenderedFeatures(e,t,i,r,o,a,s,n,l,c){return this.latestFeatureIndex&&this.latestFeatureIndex.rawTileData?this.latestFeatureIndex.query({queryGeometry:r,cameraQueryGeometry:o,scale:a,tileSize:this.tileSize,pixelPosMatrix:c,transform:n,params:s,queryPadding:this.queryPadding*l},e,t,i):{}}querySourceFeatures(e,i){const r=this.latestFeatureIndex;if(!r||!r.rawTileData)return;const o=r.loadVTLayers(),a=i&&i.sourceLayer?i.sourceLayer:"",s=o._geojsonTileLayer||o[a];if(!s)return;const n=t.featureFilter(i&&i.filter),{z:l,x:c,y:h}=this.tileID.canonical,u={z:l,x:c,y:h};for(let i=0;ie)t=!1;else if(i)if(this.expirationTime{this.remove(e,o);}),i)),this.data[r].push(o),this.order.push(r),this.order.length>this.max){const e=this._getAndRemoveByKey(this.order[0]);e&&this.onRemove(e);}return this}has(e){return e.wrapped().key in this.data}getAndRemove(e){return this.has(e)?this._getAndRemoveByKey(e.wrapped().key):null}_getAndRemoveByKey(e){const t=this.data[e].shift();return t.timeout&&clearTimeout(t.timeout),0===this.data[e].length&&delete this.data[e],this.order.splice(this.order.indexOf(e),1),t.value}getByKey(e){const t=this.data[e];return t?t[0].value:null}get(e){return this.has(e)?this.data[e.wrapped().key][0].value:null}remove(e,t){if(!this.has(e))return this;const i=e.wrapped().key,r=void 0===t?0:this.data[i].indexOf(t),o=this.data[i][r];return this.data[i].splice(r,1),o.timeout&&clearTimeout(o.timeout),0===this.data[i].length&&delete this.data[i],this.onRemove(o.value),this.order.splice(this.order.indexOf(i),1),this}setMaxSize(e){for(this.max=e;this.order.length>this.max;){const e=this._getAndRemoveByKey(this.order[0]);e&&this.onRemove(e);}return this}filter(e){const t=[];for(const i in this.data)for(const r of this.data[i])e(r.value)||t.push(r);for(const e of t)this.remove(e.value.tileID,e);}}class ne{constructor(){this.state={},this.stateChanges={},this.deletedStates={};}updateState(e,i,r){const o=String(i);if(this.stateChanges[e]=this.stateChanges[e]||{},this.stateChanges[e][o]=this.stateChanges[e][o]||{},t.extend(this.stateChanges[e][o],r),null===this.deletedStates[e]){this.deletedStates[e]={};for(const t in this.state[e])t!==o&&(this.deletedStates[e][t]=null);}else if(this.deletedStates[e]&&null===this.deletedStates[e][o]){this.deletedStates[e][o]={};for(const t in this.state[e][o])r[t]||(this.deletedStates[e][o][t]=null);}else for(const t in r)this.deletedStates[e]&&this.deletedStates[e][o]&&null===this.deletedStates[e][o][t]&&delete this.deletedStates[e][o][t];}removeFeatureState(e,t,i){if(null===this.deletedStates[e])return;const r=String(t);if(this.deletedStates[e]=this.deletedStates[e]||{},i&&void 0!==t)null!==this.deletedStates[e][r]&&(this.deletedStates[e][r]=this.deletedStates[e][r]||{},this.deletedStates[e][r][i]=null);else if(void 0!==t)if(this.stateChanges[e]&&this.stateChanges[e][r])for(i in this.deletedStates[e][r]={},this.stateChanges[e][r])this.deletedStates[e][r][i]=null;else this.deletedStates[e][r]=null;else this.deletedStates[e]=null;}getState(e,i){const r=String(i),o=t.extend({},(this.state[e]||{})[r],(this.stateChanges[e]||{})[r]);if(null===this.deletedStates[e])return {};if(this.deletedStates[e]){const t=this.deletedStates[e][i];if(null===t)return {};for(const e in t)delete o[e];}return o}initializeTileState(e,t){e.setFeatureState(this.state,t);}coalesceChanges(e,i){const r={};for(const e in this.stateChanges){this.state[e]=this.state[e]||{};const i={};for(const r in this.stateChanges[e])this.state[e][r]||(this.state[e][r]={}),t.extend(this.state[e][r],this.stateChanges[e][r]),i[r]=this.state[e][r];r[e]=i;}for(const e in this.deletedStates){this.state[e]=this.state[e]||{};const i={};if(null===this.deletedStates[e])for(const t in this.state[e])i[t]={},this.state[e][t]={};else for(const t in this.deletedStates[e]){if(null===this.deletedStates[e][t])this.state[e][t]={};else for(const i of Object.keys(this.deletedStates[e][t]))delete this.state[e][t][i];i[t]=this.state[e][t];}r[e]=r[e]||{},t.extend(r[e],i);}if(this.stateChanges={},this.deletedStates={},0!==Object.keys(r).length)for(const t in e)e[t].setFeatureState(r,i);}}class le{constructor(e=0,t=0,i=0,r=0){if(isNaN(e)||e<0||isNaN(t)||t<0||isNaN(i)||i<0||isNaN(r)||r<0)throw new Error("Invalid value for edge-insets, top, bottom, left and right must all be numbers");this.top=e,this.bottom=t,this.left=i,this.right=r;}interpolate(e,i,r){return null!=i.top&&null!=e.top&&(this.top=t.interpolateFactory.number(e.top,i.top,r)),null!=i.bottom&&null!=e.bottom&&(this.bottom=t.interpolateFactory.number(e.bottom,i.bottom,r)),null!=i.left&&null!=e.left&&(this.left=t.interpolateFactory.number(e.left,i.left,r)),null!=i.right&&null!=e.right&&(this.right=t.interpolateFactory.number(e.right,i.right,r)),this}getCenter(e,i){const r=t.clamp((this.left+e-this.right)/2,0,e),o=t.clamp((this.top+i-this.bottom)/2,0,i);return new t.Point(r,o)}equals(e){return this.top===e.top&&this.bottom===e.bottom&&this.left===e.left&&this.right===e.right}clone(){return new le(this.top,this.bottom,this.left,this.right)}toJSON(){return {top:this.top,bottom:this.bottom,left:this.left,right:this.right}}}const ce=85.051129;function he(e,t){if(!e.renderWorldCopies||e.lngRange)return;const i=t.lng-e.center.lng;t.lng+=i>180?-360:i<-180?360:0;}function ue(e){return Math.pow(2,e)}function de(e){return Math.log(e)/Math.LN2}function _e(e){return Math.max(0,Math.floor(e))}class pe{constructor(e,i,r,o,a,s){this._callbacks=e,this._tileSize=512,this._renderWorldCopies=void 0===s||!!s,this._minZoom=i||0,this._maxZoom=r||22,this._minPitch=null==o?0:o,this._maxPitch=null==a?60:a,this.setMaxBounds(),this._width=0,this._height=0,this._center=new t.LngLat(0,0),this._elevation=0,this._zoom=0,this._tileZoom=_e(this._zoom),this._scale=ue(this._zoom),this._bearingInRadians=0,this._fovInRadians=.6435011087932844,this._pitchInRadians=0,this._rollInRadians=0,this._unmodified=!0,this._edgeInsets=new le,this._minElevationForCurrentTile=0;}apply(e,t){this._latRange=e.latRange,this._lngRange=e.lngRange,this._width=e.width,this._height=e.height,this._center=e.center,this._elevation=e.elevation,this._minElevationForCurrentTile=e.minElevationForCurrentTile,this._zoom=e.zoom,this._tileZoom=_e(this._zoom),this._scale=ue(this._zoom),this._bearingInRadians=e.bearingInRadians,this._fovInRadians=e.fovInRadians,this._pitchInRadians=e.pitchInRadians,this._rollInRadians=e.rollInRadians,this._unmodified=e.unmodified,this._edgeInsets=new le(e.padding.top,e.padding.bottom,e.padding.left,e.padding.right),this._minZoom=e.minZoom,this._maxZoom=e.maxZoom,this._minPitch=e.minPitch,this._maxPitch=e.maxPitch,this._renderWorldCopies=e.renderWorldCopies,t&&this._constrain(),this._calcMatrices();}get pixelsToClipSpaceMatrix(){return this._pixelsToClipSpaceMatrix}get clipSpaceToPixelsMatrix(){return this._clipSpaceToPixelsMatrix}get minElevationForCurrentTile(){return this._minElevationForCurrentTile}setMinElevationForCurrentTile(e){this._minElevationForCurrentTile=e;}get tileSize(){return this._tileSize}get tileZoom(){return this._tileZoom}get scale(){return this._scale}get width(){return this._width}get height(){return this._height}get bearingInRadians(){return this._bearingInRadians}get lngRange(){return this._lngRange}get latRange(){return this._latRange}get pixelsToGLUnits(){return this._pixelsToGLUnits}get minZoom(){return this._minZoom}setMinZoom(e){this._minZoom!==e&&(this._minZoom=e,this.setZoom(this.getConstrained(this._center,this.zoom).zoom));}get maxZoom(){return this._maxZoom}setMaxZoom(e){this._maxZoom!==e&&(this._maxZoom=e,this.setZoom(this.getConstrained(this._center,this.zoom).zoom));}get minPitch(){return this._minPitch}setMinPitch(e){this._minPitch!==e&&(this._minPitch=e,this.setPitch(Math.max(this.pitch,e)));}get maxPitch(){return this._maxPitch}setMaxPitch(e){this._maxPitch!==e&&(this._maxPitch=e,this.setPitch(Math.min(this.pitch,e)));}get renderWorldCopies(){return this._renderWorldCopies}setRenderWorldCopies(e){void 0===e?e=!0:null===e&&(e=!1),this._renderWorldCopies=e;}get worldSize(){return this._tileSize*this._scale}get centerOffset(){return this.centerPoint._sub(this.size._div(2))}get size(){return new t.Point(this._width,this._height)}get bearing(){return this._bearingInRadians/Math.PI*180}setBearing(e){const r=t.wrap(e,-180,180)*Math.PI/180;var o,a,s,n,l,c,h,u,d;this._bearingInRadians!==r&&(this._unmodified=!1,this._bearingInRadians=r,this._calcMatrices(),this._rotationMatrix=i(),o=this._rotationMatrix,s=-this._bearingInRadians,n=(a=this._rotationMatrix)[0],l=a[1],c=a[2],h=a[3],u=Math.sin(s),d=Math.cos(s),o[0]=n*d+c*u,o[1]=l*d+h*u,o[2]=n*-u+c*d,o[3]=l*-u+h*d);}get rotationMatrix(){return this._rotationMatrix}get pitchInRadians(){return this._pitchInRadians}get pitch(){return this._pitchInRadians/Math.PI*180}setPitch(e){const i=t.clamp(e,this.minPitch,this.maxPitch)/180*Math.PI;this._pitchInRadians!==i&&(this._unmodified=!1,this._pitchInRadians=i,this._calcMatrices());}get rollInRadians(){return this._rollInRadians}get roll(){return this._rollInRadians/Math.PI*180}setRoll(e){const t=e/180*Math.PI;this._rollInRadians!==t&&(this._unmodified=!1,this._rollInRadians=t,this._calcMatrices());}get fovInRadians(){return this._fovInRadians}get fov(){return t.radiansToDegrees(this._fovInRadians)}setFov(e){e=t.clamp(e,.1,150),this.fov!==e&&(this._unmodified=!1,this._fovInRadians=t.degreesToRadians(e),this._calcMatrices());}get zoom(){return this._zoom}setZoom(e){const t=this.getConstrained(this._center,e).zoom;this._zoom!==t&&(this._unmodified=!1,this._zoom=t,this._tileZoom=Math.max(0,Math.floor(t)),this._scale=ue(t),this._constrain(),this._calcMatrices());}get center(){return this._center}setCenter(e){e.lat===this._center.lat&&e.lng===this._center.lng||(this._unmodified=!1,this._center=e,this._constrain(),this._calcMatrices());}get elevation(){return this._elevation}setElevation(e){e!==this._elevation&&(this._elevation=e,this._constrain(),this._calcMatrices());}get padding(){return this._edgeInsets.toJSON()}setPadding(e){this._edgeInsets.equals(e)||(this._unmodified=!1,this._edgeInsets.interpolate(this._edgeInsets,e,1),this._calcMatrices());}get centerPoint(){return this._edgeInsets.getCenter(this._width,this._height)}get pixelsPerMeter(){return this._pixelPerMeter}get unmodified(){return this._unmodified}isPaddingEqual(e){return this._edgeInsets.equals(e)}interpolatePadding(e,t,i){this._unmodified=!1,this._edgeInsets.interpolate(e,t,i),this._constrain(),this._calcMatrices();}resize(e,t){this._width=e,this._height=t,this._constrain(),this._calcMatrices();}getMaxBounds(){return this._latRange&&2===this._latRange.length&&this._lngRange&&2===this._lngRange.length?new V([this._lngRange[0],this._latRange[0]],[this._lngRange[1],this._latRange[1]]):null}setMaxBounds(e){e?(this._lngRange=[e.getWest(),e.getEast()],this._latRange=[e.getSouth(),e.getNorth()],this._constrain()):(this._lngRange=null,this._latRange=[-85.051129,ce]);}getConstrained(e,t){return this._callbacks.getConstrained(e,t)}getCameraQueryGeometry(e,i){if(1===i.length)return [i[0],e];{let r=e.x,o=e.y,a=e.x,s=e.y;for(const e of i)r=Math.min(r,e.x),o=Math.min(o,e.y),a=Math.max(a,e.x),s=Math.max(s,e.y);return [new t.Point(r,o),new t.Point(a,o),new t.Point(a,s),new t.Point(r,s),new t.Point(r,o)]}}_constrain(){if(!this.center||!this._width||!this._height||this._constraining)return;this._constraining=!0;const e=this._unmodified,{center:t,zoom:i}=this.getConstrained(this.center,this.zoom);this.setCenter(t),this.setZoom(i),this._unmodified=e,this._constraining=!1;}_calcMatrices(){if(this._width&&this._height){this._pixelsToGLUnits=[2/this._width,-2/this._height];let e=t.identity(new Float64Array(16));t.scale(e,e,[this._width/2,-this._height/2,1]),t.translate(e,e,[1,-1,0]),this._clipSpaceToPixelsMatrix=e,e=t.identity(new Float64Array(16)),t.scale(e,e,[1,-1,1]),t.translate(e,e,[-1,-1,0]),t.scale(e,e,[2/this._width,2/this._height,1]),this._pixelsToClipSpaceMatrix=e;}this._callbacks.calcMatrices();}}function me(e,t,i){const r=t.intersectsFrustum(e);if(!i)return r;const o=t.intersectsPlane(i);return 0===r||0===o?0:2===r&&2===o?2:1}function fe(e,i,r,o,a){let s=e;const n=Math.atan(i/r);return s=e+de(o/Math.hypot(i,r)/Math.max(.5,Math.cos(t.degreesToRadians(a/2)))),s+=1*de(Math.cos(n))/2,s+=t.clamp(e-s,-0,0),s}function ge(e,t){const i=(t.roundZoom?Math.round:Math.floor)(e.zoom+de(e.tileSize/t.tileSize));return Math.max(0,i)}function ve(e,i){const r=e.getCameraFrustum(),o=e.getClippingPlane(),a=e.screenPointToMercatorCoordinate(e.getCameraPoint()),s=t.MercatorCoordinate.fromLngLat(e.center,e.elevation);a.z=s.z+Math.cos(e.pitchInRadians)*e.cameraToCenterDistance/e.worldSize;const n=e.getCoveringTilesDetailsProvider(),l=n.allowVariableZoom(e,i),c=ge(e,i),h=i.minzoom||0,u=void 0!==i.maxzoom?i.maxzoom:e.maxZoom,d=Math.min(Math.max(0,c),u),_=Math.pow(2,d),p=[_*a.x,_*a.y,0],m=[_*s.x,_*s.y,0],f=Math.hypot(s.x-a.x,s.y-a.y),g=Math.abs(s.z-a.z),v=Math.hypot(f,g),y=e=>({zoom:0,x:0,y:0,wrap:e,fullyVisible:!1}),x=[],b=[];if(e.renderWorldCopies&&n.allowWorldCopies())for(let e=1;e<=3;e++)x.push(y(-e)),x.push(y(e));for(x.push(y(0));x.length>0;){const _=x.pop(),f=_.x,y=_.y;let w=_.fullyVisible;const T={x:f,y:y,z:_.zoom},E=n.getTileAABB(T,_.wrap,e.elevation,i);if(!w){const e=me(r,E,o);if(0===e)continue;w=2===e;}const P=n.distanceToTile2d(a.x,a.y,T,E);let I=c;l&&(I=(i.calculateTileZoom||fe)(e.zoom+de(e.tileSize/i.tileSize),P,g,v,e.fov)),I=(i.roundZoom?Math.round:Math.floor)(I),I=Math.max(0,I);const C=Math.min(I,u);if(_.wrap=n.getWrap(s,T,_.wrap),_.zoom>=C){if(_.zoom>1),wrap:_.wrap,fullyVisible:w});}return b.sort(((e,t)=>e.distanceSq-t.distanceSq)).map((e=>e.tileID))}class ye extends t.Evented{constructor(e,t,i){super(),this.id=e,this.dispatcher=i,this.on("data",(e=>this._dataHandler(e))),this.on("dataloading",(()=>{this._sourceErrored=!1;})),this.on("error",(()=>{this._sourceErrored=this._source.loaded();})),this._source=((e,t,i,r)=>{const o=new(ee(t.type))(e,t,i,r);if(o.id!==e)throw new Error(`Expected Source id to be ${e} instead of ${o.id}`);return o})(e,t,i,this),this._tiles={},this._cache=new se(0,(e=>this._unloadTile(e))),this._timers={},this._cacheTimers={},this._maxTileCacheSize=null,this._maxTileCacheZoomLevels=null,this._loadedParentTiles={},this._coveredTiles={},this._state=new ne,this._didEmitContent=!1,this._updated=!1;}onAdd(e){this.map=e,this._maxTileCacheSize=e?e._maxTileCacheSize:null,this._maxTileCacheZoomLevels=e?e._maxTileCacheZoomLevels:null,this._source&&this._source.onAdd&&this._source.onAdd(e);}onRemove(e){this.clearTiles(),this._source&&this._source.onRemove&&this._source.onRemove(e);}loaded(){if(this._sourceErrored)return !0;if(!this._sourceLoaded)return !1;if(!this._source.loaded())return !1;if(!(void 0===this.used&&void 0===this.usedForTerrain||this.used||this.usedForTerrain))return !0;if(!this._updated)return !1;for(const e in this._tiles){const t=this._tiles[e];if("loaded"!==t.state&&"errored"!==t.state)return !1}return !0}getSource(){return this._source}pause(){this._paused=!0;}resume(){if(!this._paused)return;const e=this._shouldReloadOnResume;this._paused=!1,this._shouldReloadOnResume=!1,e&&this.reload(),this.transform&&this.update(this.transform,this.terrain);}_loadTile(e,i,r){return t.__awaiter(this,void 0,void 0,(function*(){try{yield this._source.loadTile(e),this._tileLoaded(e,i,r);}catch(i){e.state="errored",404!==i.status?this._source.fire(new t.ErrorEvent(i,{tile:e})):this.update(this.transform,this.terrain);}}))}_unloadTile(e){this._source.unloadTile&&this._source.unloadTile(e);}_abortTile(e){this._source.abortTile&&this._source.abortTile(e),this._source.fire(new t.Event("dataabort",{tile:e,coord:e.tileID,dataType:"source"}));}serialize(){return this._source.serialize()}prepare(e){this._source.prepare&&this._source.prepare(),this._state.coalesceChanges(this._tiles,this.map?this.map.painter:null);for(const t in this._tiles){const i=this._tiles[t];i.upload(e),i.prepare(this.map.style.imageManager);}}getIds(){return Object.values(this._tiles).map((e=>e.tileID)).sort(xe).map((e=>e.key))}getRenderableIds(e){const i=[];for(const t in this._tiles)this._isIdRenderable(t,e)&&i.push(this._tiles[t]);return e?i.sort(((e,i)=>{const r=e.tileID,o=i.tileID,a=new t.Point(r.canonical.x,r.canonical.y)._rotate(-this.transform.bearingInRadians),s=new t.Point(o.canonical.x,o.canonical.y)._rotate(-this.transform.bearingInRadians);return r.overscaledZ-o.overscaledZ||s.y-a.y||s.x-a.x})).map((e=>e.tileID.key)):i.map((e=>e.tileID)).sort(xe).map((e=>e.key))}hasRenderableParent(e){const t=this.findLoadedParent(e,0);return !!t&&this._isIdRenderable(t.tileID.key)}_isIdRenderable(e,t){return this._tiles[e]&&this._tiles[e].hasData()&&!this._coveredTiles[e]&&(t||!this._tiles[e].holdingForFade())}reload(e){if(this._paused)this._shouldReloadOnResume=!0;else {this._cache.reset();for(const t in this._tiles)(e||"errored"!==this._tiles[t].state)&&this._reloadTile(t,"reloading");}}_reloadTile(e,i){return t.__awaiter(this,void 0,void 0,(function*(){const t=this._tiles[e];t&&("loading"!==t.state&&(t.state=i),yield this._loadTile(t,e,i));}))}_tileLoaded(e,i,r){e.timeAdded=f.now(),"expired"===r&&(e.refreshedUponExpiration=!0),this._setTileReloadTimer(i,e),"raster-dem"===this.getSource().type&&e.dem&&this._backfillDEM(e),this._state.initializeTileState(e,this.map?this.map.painter:null),e.aborted||this._source.fire(new t.Event("data",{dataType:"source",tile:e,coord:e.tileID}));}_backfillDEM(e){const t=this.getRenderableIds();for(let r=0;r1||(Math.abs(i)>1&&(1===Math.abs(i+o)?i+=o:1===Math.abs(i-o)&&(i-=o)),t.dem&&e.dem&&(e.dem.backfillBorder(t.dem,i,r),e.neighboringTiles&&e.neighboringTiles[a]&&(e.neighboringTiles[a].backfilled=!0)));}}getTile(e){return this.getTileByID(e.key)}getTileByID(e){return this._tiles[e]}_retainLoadedChildren(e,t,i,r){for(const o in this._tiles){let a=this._tiles[o];if(r[o]||!a.hasData()||a.tileID.overscaledZ<=t||a.tileID.overscaledZ>i)continue;let s=a.tileID;for(;a&&a.tileID.overscaledZ>t+1;){const e=a.tileID.scaledTo(a.tileID.overscaledZ-1);a=this._tiles[e.key],a&&a.hasData()&&(s=e);}let n=s;for(;n.overscaledZ>t;)if(n=n.scaledTo(n.overscaledZ-1),e[n.key]){r[s.key]=s;break}}}findLoadedParent(e,t){if(e.key in this._loadedParentTiles){const i=this._loadedParentTiles[e.key];return i&&i.tileID.overscaledZ>=t?i:null}for(let i=e.overscaledZ-1;i>=t;i--){const t=e.scaledTo(i),r=this._getLoadedTile(t);if(r)return r}}findLoadedSibling(e){return this._getLoadedTile(e)}_getLoadedTile(e){const t=this._tiles[e.key];return t&&t.hasData()?t:this._cache.getByKey(e.wrapped().key)}updateCacheSize(e){const i=Math.ceil(e.width/this._source.tileSize)+1,r=Math.ceil(e.height/this._source.tileSize)+1,o=Math.floor(i*r*(null===this._maxTileCacheZoomLevels?t.config.MAX_TILE_CACHE_ZOOM_LEVELS:this._maxTileCacheZoomLevels)),a="number"==typeof this._maxTileCacheSize?Math.min(this._maxTileCacheSize,o):o;this._cache.setMaxSize(a);}handleWrapJump(e){const t=Math.round((e-(void 0===this._prevLng?e:this._prevLng))/360);if(this._prevLng=e,t){const e={};for(const i in this._tiles){const r=this._tiles[i];r.tileID=r.tileID.unwrapTo(r.tileID.wrap+t),e[r.tileID.key]=r;}this._tiles=e;for(const e in this._timers)clearTimeout(this._timers[e]),delete this._timers[e];for(const e in this._tiles)this._setTileReloadTimer(e,this._tiles[e]);}}_updateCoveredAndRetainedTiles(e,t,i,r,o,a){const s={},n={},l=Object.keys(e),c=f.now();for(const i of l){const r=e[i],o=this._tiles[i];if(!o||0!==o.fadeEndTime&&o.fadeEndTime<=c)continue;const a=this.findLoadedParent(r,t),l=this.findLoadedSibling(r),h=a||l||null;h&&(this._addTile(h.tileID),s[h.tileID.key]=h.tileID),n[i]=r;}this._retainLoadedChildren(n,r,i,e);for(const t in s)e[t]||(this._coveredTiles[t]=!0,e[t]=s[t]);if(a){const t={},i={};for(const e of o)this._tiles[e.key].hasData()?t[e.key]=e:i[e.key]=e;for(const r in i){const o=i[r].children(this._source.maxzoom);this._tiles[o[0].key]&&this._tiles[o[1].key]&&this._tiles[o[2].key]&&this._tiles[o[3].key]&&(t[o[0].key]=e[o[0].key]=o[0],t[o[1].key]=e[o[1].key]=o[1],t[o[2].key]=e[o[2].key]=o[2],t[o[3].key]=e[o[3].key]=o[3],delete i[r]);}for(const r in i){const o=i[r],a=this.findLoadedParent(o,this._source.minzoom),s=this.findLoadedSibling(o),n=a||s||null;if(n){t[n.tileID.key]=e[n.tileID.key]=n.tileID;for(const e in t)t[e].isChildOf(n.tileID)&&delete t[e];}}for(const e in this._tiles)t[e]||(this._coveredTiles[e]=!0);}}update(e,i){if(!this._sourceLoaded||this._paused)return;let r;this.transform=e,this.terrain=i,this.updateCacheSize(e),this.handleWrapJump(this.transform.center.lng),this._coveredTiles={},this.used||this.usedForTerrain?this._source.tileID?r=e.getVisibleUnwrappedCoordinates(this._source.tileID).map((e=>new t.OverscaledTileID(e.canonical.z,e.wrap,e.canonical.z,e.canonical.x,e.canonical.y))):(r=ve(e,{tileSize:this.usedForTerrain?this.tileSize:this._source.tileSize,minzoom:this._source.minzoom,maxzoom:this._source.maxzoom,roundZoom:!this.usedForTerrain&&this._source.roundZoom,reparseOverscaled:this._source.reparseOverscaled,terrain:i,calculateTileZoom:this._source.calculateTileZoom}),this._source.hasTile&&(r=r.filter((e=>this._source.hasTile(e))))):r=[];const o=ge(e,this._source),a=Math.max(o-ye.maxOverzooming,this._source.minzoom),s=Math.max(o+ye.maxUnderzooming,this._source.minzoom);if(this.usedForTerrain){const e={};for(const t of r)if(t.canonical.z>this._source.minzoom){const i=t.scaledTo(t.canonical.z-1);e[i.key]=i;const r=t.scaledTo(Math.max(this._source.minzoom,Math.min(t.canonical.z,5)));e[r.key]=r;}r=r.concat(Object.values(e));}const n=0===r.length&&!this._updated&&this._didEmitContent;this._updated=!0,n&&this.fire(new t.Event("data",{sourceDataType:"idle",dataType:"source",sourceId:this.id}));const l=this._updateRetainedTiles(r,o);be(this._source.type)&&this._updateCoveredAndRetainedTiles(l,a,s,o,r,i);for(const e in l)this._tiles[e].clearFadeHold();const c=t.keysDifference(this._tiles,l);for(const e of c){const t=this._tiles[e];t.hasSymbolBuckets&&!t.holdingForFade()?t.setHoldDuration(this.map._fadeDuration):t.hasSymbolBuckets&&!t.symbolFadeFinished()||this._removeTile(e);}this._updateLoadedParentTileCache(),this._updateLoadedSiblingTileCache();}releaseSymbolFadeTiles(){for(const e in this._tiles)this._tiles[e].holdingForFade()&&this._removeTile(e);}_updateRetainedTiles(e,t){var i;const r={},o={},a=Math.max(t-ye.maxOverzooming,this._source.minzoom),s=Math.max(t+ye.maxUnderzooming,this._source.minzoom),n={};for(const i of e){const e=this._addTile(i);r[i.key]=i,e.hasData()||tthis._source.maxzoom){const e=s.children(this._source.maxzoom)[0],t=this.getTile(e);if(t&&t.hasData()){r[e.key]=e;continue}}else {const e=s.children(this._source.maxzoom);if(r[e[0].key]&&r[e[1].key]&&r[e[2].key]&&r[e[3].key])continue}let n=e.wasRequested();for(let t=s.overscaledZ-1;t>=a;--t){const a=s.scaledTo(t);if(o[a.key])break;if(o[a.key]=!0,e=this.getTile(a),!e&&n&&(e=this._addTile(a)),e){const t=e.hasData();if((t||!(null===(i=this.map)||void 0===i?void 0:i.cancelPendingTileRequestsWhileZooming)||n)&&(r[a.key]=a),n=e.wasRequested(),t)break}}}return r}_updateLoadedParentTileCache(){this._loadedParentTiles={};for(const e in this._tiles){const t=[];let i,r=this._tiles[e].tileID;for(;r.overscaledZ>0;){if(r.key in this._loadedParentTiles){i=this._loadedParentTiles[r.key];break}t.push(r.key);const e=r.scaledTo(r.overscaledZ-1);if(i=this._getLoadedTile(e),i)break;r=e;}for(const e of t)this._loadedParentTiles[e]=i;}}_updateLoadedSiblingTileCache(){this._loadedSiblingTiles={};for(const e in this._tiles){const t=this._tiles[e].tileID,i=this._getLoadedTile(t);this._loadedSiblingTiles[t.key]=i;}}_addTile(e){let i=this._tiles[e.key];if(i)return i;i=this._cache.getAndRemove(e),i&&(this._setTileReloadTimer(e.key,i),i.tileID=e,this._state.initializeTileState(i,this.map?this.map.painter:null),this._cacheTimers[e.key]&&(clearTimeout(this._cacheTimers[e.key]),delete this._cacheTimers[e.key],this._setTileReloadTimer(e.key,i)));const r=i;return i||(i=new ae(e,this._source.tileSize*e.overscaleFactor()),this._loadTile(i,e.key,i.state)),i.uses++,this._tiles[e.key]=i,r||this._source.fire(new t.Event("dataloading",{tile:i,coord:i.tileID,dataType:"source"})),i}_setTileReloadTimer(e,t){e in this._timers&&(clearTimeout(this._timers[e]),delete this._timers[e]);const i=t.getExpiryTimeout();i&&(this._timers[e]=setTimeout((()=>{this._reloadTile(e,"expired"),delete this._timers[e];}),i));}_removeTile(e){const t=this._tiles[e];t&&(t.uses--,delete this._tiles[e],this._timers[e]&&(clearTimeout(this._timers[e]),delete this._timers[e]),t.uses>0||(t.hasData()&&"reloading"!==t.state?this._cache.add(t.tileID,t,t.getExpiryTimeout()):(t.aborted=!0,this._abortTile(t),this._unloadTile(t))));}_dataHandler(e){const t=e.sourceDataType;"source"===e.dataType&&"metadata"===t&&(this._sourceLoaded=!0),this._sourceLoaded&&!this._paused&&"source"===e.dataType&&"content"===t&&(this.reload(e.sourceDataChanged),this.transform&&this.update(this.transform,this.terrain),this._didEmitContent=!0);}clearTiles(){this._shouldReloadOnResume=!1,this._paused=!1;for(const e in this._tiles)this._removeTile(e);this._cache.reset();}tilesIn(e,i,r){const o=[],a=this.transform;if(!a)return o;const s=r?a.getCameraQueryGeometry(e):e,n=e.map((e=>a.screenPointToMercatorCoordinate(e,this.terrain))),l=s.map((e=>a.screenPointToMercatorCoordinate(e,this.terrain))),c=this.getIds();let h=1/0,u=1/0,d=-1/0,_=-1/0;for(const e of l)h=Math.min(h,e.x),u=Math.min(u,e.y),d=Math.max(d,e.x),_=Math.max(_,e.y);for(let e=0;e=0&&f[1].y+m>=0){const e=n.map((e=>s.getTilePoint(e))),t=l.map((e=>s.getTilePoint(e)));o.push({tile:r,tileID:s,queryGeometry:e,cameraQueryGeometry:t,scale:p});}}return o}getVisibleCoordinates(e){const t=this.getRenderableIds(e).map((e=>this._tiles[e].tileID));return this.transform&&this.transform.precacheTiles(t),t}hasTransition(){if(this._source.hasTransition())return !0;if(be(this._source.type)){const e=f.now();for(const t in this._tiles)if(this._tiles[t].fadeEndTime>=e)return !0}return !1}setFeatureState(e,t,i){this._state.updateState(e=e||"_geojsonTileLayer",t,i);}removeFeatureState(e,t,i){this._state.removeFeatureState(e=e||"_geojsonTileLayer",t,i);}getFeatureState(e,t){return this._state.getState(e=e||"_geojsonTileLayer",t)}setDependencies(e,t,i){const r=this._tiles[e];r&&r.setDependencies(t,i);}reloadTilesForDependencies(e,t){for(const i in this._tiles)this._tiles[i].hasDependency(e,t)&&this._reloadTile(i,"reloading");this._cache.filter((i=>!i.hasDependency(e,t)));}}function xe(e,t){const i=Math.abs(2*e.wrap)-+(e.wrap<0),r=Math.abs(2*t.wrap)-+(t.wrap<0);return e.overscaledZ-t.overscaledZ||r-i||t.canonical.y-e.canonical.y||t.canonical.x-e.canonical.x}function be(e){return "raster"===e||"image"===e||"video"===e}ye.maxOverzooming=10,ye.maxUnderzooming=3;class we{constructor(e,t){this.reset(e,t);}reset(e,t){this.points=e||[],this._distances=[0];for(let e=1;e0?(o-s)/n:0;return this.points[a].mult(1-l).add(this.points[i].mult(l))}}function Te(e,t){let i=!0;return "always"===e||"never"!==e&&"never"!==t||(i=!1),i}class Ee{constructor(e,t,i){const r=this.boxCells=[],o=this.circleCells=[];this.xCellCount=Math.ceil(e/i),this.yCellCount=Math.ceil(t/i);for(let e=0;ethis.width||r<0||t>this.height)return [];const n=[];if(e<=0&&t<=0&&this.width<=i&&this.height<=r){if(o)return [{key:null,x1:e,y1:t,x2:i,y2:r}];for(let e=0;e0}hitTestCircle(e,t,i,r,o){const a=e-i,s=e+i,n=t-i,l=t+i;if(s<0||a>this.width||l<0||n>this.height)return !1;const c=[];return this._forEachCell(a,n,s,l,this._queryCellCircle,c,{hitTest:!0,overlapMode:r,circle:{x:e,y:t,radius:i},seenUids:{box:{},circle:{}}},o),c.length>0}_queryCell(e,t,i,r,o,a,s,n){const{seenUids:l,hitTest:c,overlapMode:h}=s,u=this.boxCells[o];if(null!==u){const o=this.bboxes;for(const s of u)if(!l.box[s]){l.box[s]=!0;const u=4*s,d=this.boxKeys[s];if(e<=o[u+2]&&t<=o[u+3]&&i>=o[u+0]&&r>=o[u+1]&&(!n||n(d))&&(!c||!Te(h,d.overlapMode))&&(a.push({key:d,x1:o[u],y1:o[u+1],x2:o[u+2],y2:o[u+3]}),c))return !0}}const d=this.circleCells[o];if(null!==d){const o=this.circles;for(const s of d)if(!l.circle[s]){l.circle[s]=!0;const u=3*s,d=this.circleKeys[s];if(this._circleAndRectCollide(o[u],o[u+1],o[u+2],e,t,i,r)&&(!n||n(d))&&(!c||!Te(h,d.overlapMode))){const e=o[u],t=o[u+1],i=o[u+2];if(a.push({key:d,x1:e-i,y1:t-i,x2:e+i,y2:t+i}),c)return !0}}}return !1}_queryCellCircle(e,t,i,r,o,a,s,n){const{circle:l,seenUids:c,overlapMode:h}=s,u=this.boxCells[o];if(null!==u){const e=this.bboxes;for(const t of u)if(!c.box[t]){c.box[t]=!0;const i=4*t,r=this.boxKeys[t];if(this._circleAndRectCollide(l.x,l.y,l.radius,e[i+0],e[i+1],e[i+2],e[i+3])&&(!n||n(r))&&!Te(h,r.overlapMode))return a.push(!0),!0}}const d=this.circleCells[o];if(null!==d){const e=this.circles;for(const t of d)if(!c.circle[t]){c.circle[t]=!0;const i=3*t,r=this.circleKeys[t];if(this._circlesCollide(e[i],e[i+1],e[i+2],l.x,l.y,l.radius)&&(!n||n(r))&&!Te(h,r.overlapMode))return a.push(!0),!0}}}_forEachCell(e,t,i,r,o,a,s,n){const l=this._convertToXCellCoord(e),c=this._convertToYCellCoord(t),h=this._convertToXCellCoord(i),u=this._convertToYCellCoord(r);for(let d=l;d<=h;d++)for(let l=c;l<=u;l++)if(o.call(this,e,t,i,r,this.xCellCount*l+d,a,s,n))return}_convertToXCellCoord(e){return Math.max(0,Math.min(this.xCellCount-1,Math.floor(e*this.xScale)))}_convertToYCellCoord(e){return Math.max(0,Math.min(this.yCellCount-1,Math.floor(e*this.yScale)))}_circlesCollide(e,t,i,r,o,a){const s=r-e,n=o-t,l=i+a;return l*l>s*s+n*n}_circleAndRectCollide(e,t,i,r,o,a,s){const n=(a-r)/2,l=Math.abs(e-(r+n));if(l>n+i)return !1;const c=(s-o)/2,h=Math.abs(t-(o+c));if(h>c+i)return !1;if(l<=n||h<=c)return !0;const u=l-n,d=h-c;return u*u+d*d<=i*i}}function Pe(e,r,o){const a=t.create();if(!e){const{vecSouth:e,vecEast:t}=Ce(r),o=i();o[0]=t[0],o[1]=t[1],o[2]=e[0],o[3]=e[1],s=o,(d=(l=(n=o)[0])*(u=n[3])-(h=n[2])*(c=n[1]))&&(s[0]=u*(d=1/d),s[1]=-c*d,s[2]=-h*d,s[3]=l*d),a[0]=o[0],a[1]=o[1],a[4]=o[2],a[5]=o[3];}var s,n,l,c,h,u,d;return t.scale(a,a,[1/o,1/o,1]),a}function Ie(e,i,r,o){if(e){const e=t.create();if(!i){const{vecSouth:t,vecEast:i}=Ce(r);e[0]=i[0],e[1]=i[1],e[4]=t[0],e[5]=t[1];}return t.scale(e,e,[o,o,1]),e}return r.pixelsToClipSpaceMatrix}function Ce(e){const i=Math.cos(e.rollInRadians),r=Math.sin(e.rollInRadians),o=Math.cos(e.pitchInRadians),a=Math.cos(e.bearingInRadians),s=Math.sin(e.bearingInRadians),n=t.create$1();n[0]=-a*o*r-s*i,n[1]=-s*o*r+a*i;const l=t.length(n);l<1e-9?t.zero(n):t.scale$1(n,n,1/l);const c=t.create$1();c[0]=a*o*i-s*r,c[1]=s*o*i+a*r;const h=t.length(c);return h<1e-9?t.zero(c):t.scale$1(c,c,1/h),{vecEast:c,vecSouth:n}}function Me(e,i,r,o){let a;o?(a=[e,i,o(e,i),1],t.transformMat4(a,a,r)):(a=[e,i,0,1],qe(a,a,r));const s=a[3];return {point:new t.Point(a[0]/s,a[1]/s),signedDistanceFromCamera:s,isOccluded:!1}}function Se(e,t){return .5+e/t*.5}function Re(e,t){return e.x>=-t[0]&&e.x<=t[0]&&e.y>=-t[1]&&e.y<=t[1]}function De(e,i,r,o,a,s,n,l,c,h,u,d,_){const p=r?e.textSizeData:e.iconSizeData,m=t.evaluateSizeForZoom(p,i.transform.zoom),f=[256/i.width*2+1,256/i.height*2+1],g=r?e.text.dynamicLayoutVertexArray:e.icon.dynamicLayoutVertexArray;g.clear();const v=e.lineVertexArray,y=r?e.text.placedSymbolArray:e.icon.placedSymbolArray,x=i.transform.width/i.transform.height;let b=!1;for(let r=0;rMath.abs(r.x-i.x)*o?{useVertical:!0}:(e===t.WritingMode.vertical?i.yr.x)?{needsFlipping:!0}:null}function Ae(e){const{projectionContext:i,pitchedLabelPlaneMatrixInverse:r,symbol:o,fontSize:a,flip:s,keepUpright:n,glyphOffsetArray:l,dynamicLayoutVertexArray:c,aspectRatio:h,rotateToLine:u}=e,d=a/24,_=o.lineOffsetX*d,p=o.lineOffsetY*d;let m;if(o.numGlyphs>1){const e=o.glyphStartIndex+o.numGlyphs,t=o.lineStartIndex,a=o.lineStartIndex+o.lineLength,c=ze(d,l,_,p,s,o,u,i);if(!c)return {notEnoughRoom:!0};const f=Oe(c.first.point.x,c.first.point.y,i,r),g=Oe(c.last.point.x,c.last.point.y,i,r);if(n&&!s){const e=Le(o.writingMode,f,g,h);if(e)return e}m=[c.first];for(let r=o.glyphStartIndex+1;r0?n.point:ke(i.tileAnchorPoint,s,e,1,i),c=Oe(e.x,e.y,i,r),u=Oe(l.x,l.y,i,r),d=Le(o.writingMode,c,u,h);if(d)return d}const e=Ge(d*l.getoffsetX(o.glyphStartIndex),_,p,s,o.segment,o.lineStartIndex,o.lineStartIndex+o.lineLength,i,u);if(!e||i.projectionCache.anyProjectionOccluded)return {notEnoughRoom:!0};m=[e];}for(const e of m)t.addDynamicAttributes(c,e.point,e.angle);return {}}function ke(e,t,i,r,o){const a=e.add(e.sub(t)._unit()),s=Be(a.x,a.y,o).point,n=i.sub(s);return i.add(n._mult(r/n.mag()))}function Fe(e,i,r){const o=i.projectionCache;if(o.projections[e])return o.projections[e];const a=new t.Point(i.lineVertexArray.getx(e),i.lineVertexArray.gety(e)),s=Be(a.x,a.y,i);if(s.signedDistanceFromCamera>0)return o.projections[e]=s.point,o.anyProjectionOccluded=o.anyProjectionOccluded||s.isOccluded,s.point;const n=e-r.direction;return ke(0===r.distanceFromAnchor?i.tileAnchorPoint:new t.Point(i.lineVertexArray.getx(n),i.lineVertexArray.gety(n)),a,r.previousVertex,r.absOffsetX-r.distanceFromAnchor+1,i)}function Be(e,t,i){const r=e+i.translation[0],o=t+i.translation[1];let a;return i.pitchWithMap?(a=Me(r,o,i.pitchedLabelPlaneMatrix,i.getElevation),a.isOccluded=!1):(a=i.transform.projectTileCoordinates(r,o,i.unwrappedTileID,i.getElevation),a.point.x=(.5*a.point.x+.5)*i.width,a.point.y=(.5*-a.point.y+.5)*i.height),a}function Oe(e,i,r,o){if(r.pitchWithMap){const a=[e,i,0,1];return t.transformMat4(a,a,o),r.transform.projectTileCoordinates(a[0]/a[3],a[1]/a[3],r.unwrappedTileID,r.getElevation).point}return {x:e/r.width*2-1,y:i/r.height*2-1}}function Ue(e,t,i){return i.transform.projectTileCoordinates(e,t,i.unwrappedTileID,i.getElevation)}function je(e,t,i){return e._unit()._perp()._mult(t*i)}function Ne(e,i,r,o,a,s,n,l,c){if(l.projectionCache.offsets[e])return l.projectionCache.offsets[e];const h=r.add(i);if(e+c.direction=a)return l.projectionCache.offsets[e]=h,h;const u=Fe(e+c.direction,l,c),d=je(u.sub(r),n,c.direction),_=r.add(d),p=u.add(d);return l.projectionCache.offsets[e]=t.findLineIntersection(s,h,_,p)||h,l.projectionCache.offsets[e]}function Ge(e,t,i,r,o,a,s,n,l){const c=r?e-t:e+t;let h=c>0?1:-1,u=0;r&&(h*=-1,u=Math.PI),h<0&&(u+=Math.PI);let d,_=h>0?a+o:a+o+1;n.projectionCache.cachedAnchorPoint?d=n.projectionCache.cachedAnchorPoint:(d=Be(n.tileAnchorPoint.x,n.tileAnchorPoint.y,n).point,n.projectionCache.cachedAnchorPoint=d);let p,m,f=d,g=d,v=0,y=0;const x=Math.abs(c),b=[];let w;for(;v+y<=x;){if(_+=h,_=s)return null;v+=y,g=f,m=p;const e={absOffsetX:x,direction:h,distanceFromAnchor:v,previousVertex:g};if(f=Fe(_,n,e),0===i)b.push(g),w=f.sub(g);else {let t;const r=f.sub(g);t=0===r.mag()?je(Fe(_+h,n,e).sub(f),i,h):je(r,i,h),m||(m=g.add(t)),p=Ne(_,t,f,a,s,m,i,n,e),b.push(m),w=p.sub(m);}y=w.mag();}const T=w._mult((x-v)/y)._add(m||g),E=u+Math.atan2(f.y-g.y,f.x-g.x);return b.push(T),{point:T,angle:l?E:0,path:b}}const Ze=new Float32Array([-1/0,-1/0,0,-1/0,-1/0,0,-1/0,-1/0,0,-1/0,-1/0,0]);function Ve(e,t){for(let i=0;i=1;e--)_.push(s.path[e]);for(let e=1;ee.signedDistanceFromCamera<=0))?[]:e.map((e=>e.point));}let f=[];if(_.length>0){const e=_[0].clone(),i=_[0].clone();for(let t=1;t<_.length;t++)e.x=Math.min(e.x,_[t].x),e.y=Math.min(e.y,_[t].y),i.x=Math.max(i.x,_[t].x),i.y=Math.max(i.y,_[t].y);f=e.x>=r.x&&i.x<=o.x&&e.y>=r.y&&i.y<=o.y?[_]:i.xo.x||i.yo.y?[]:t.clipLine([_],r.x,r.y,o.x,o.y);}for(const t of f){a.reset(t,.25*i);let r=0;r=a.length<=.5*i?1:Math.ceil(a.paddedLength/p)+1;for(let t=0;t{const t=Me(e.x,e.y,r,i.getElevation),o=i.transform.projectTileCoordinates(t.point.x,t.point.y,i.unwrappedTileID,i.getElevation);return o.point.x=(.5*o.point.x+.5)*i.width,o.point.y=(.5*-o.point.y+.5)*i.height,o}))}(e,i);return function(e){let t=0,i=0,r=0,o=0;for(let a=0;ai&&(i=o,t=r));return e.slice(t,t+i)}(r)}queryRenderedSymbols(e){if(0===e.length||0===this.grid.keysLength()&&0===this.ignoredGrid.keysLength())return {};const i=[];let r=1/0,o=1/0,a=-1/0,s=-1/0;for(const n of e){const e=new t.Point(n.x+We,n.y+We);r=Math.min(r,e.x),o=Math.min(o,e.y),a=Math.max(a,e.x),s=Math.max(s,e.y),i.push(e);}const n=this.grid.query(r,o,a,s).concat(this.ignoredGrid.query(r,o,a,s)),l={},c={};for(const e of n){const r=e.key;if(void 0===l[r.bucketInstanceId]&&(l[r.bucketInstanceId]={}),l[r.bucketInstanceId][r.featureIndex])continue;const o=[new t.Point(e.x1,e.y1),new t.Point(e.x2,e.y1),new t.Point(e.x2,e.y2),new t.Point(e.x1,e.y2)];t.polygonIntersectsPolygon(i,o)&&(l[r.bucketInstanceId][r.featureIndex]=!0,void 0===c[r.bucketInstanceId]&&(c[r.bucketInstanceId]=[]),c[r.bucketInstanceId].push(r.featureIndex));}return c}insertCollisionBox(e,t,i,r,o,a){(i?this.ignoredGrid:this.grid).insert({bucketInstanceId:r,featureIndex:o,collisionGroupID:a,overlapMode:t},e[0],e[1],e[2],e[3]);}insertCollisionCircles(e,t,i,r,o,a){const s=i?this.ignoredGrid:this.grid,n={bucketInstanceId:r,featureIndex:o,collisionGroupID:a,overlapMode:t};for(let t=0;t=this.screenRightBoundary||rthis.screenBottomBoundary}isInsideGrid(e,t,i,r){return i>=0&&e=0&&tthis.projectAndGetPerspectiveRatio(e.x,e.y,o,c,u)));S=e.some((e=>!e.isOccluded)),M=e.map((e=>new t.Point(e.x,e.y)));}else S=!0;return {box:t.getAABB(M),allPointsOccluded:!S}}}class $e{constructor(e,t,i,r){this.opacity=e?Math.max(0,Math.min(1,e.opacity+(e.placed?t:-t))):r&&i?1:0,this.placed=i;}isHidden(){return 0===this.opacity&&!this.placed}}class He{constructor(e,t,i,r,o){this.text=new $e(e?e.text:null,t,i,o),this.icon=new $e(e?e.icon:null,t,r,o);}isHidden(){return this.text.isHidden()&&this.icon.isHidden()}}class Ke{constructor(e,t,i){this.text=e,this.icon=t,this.skipFade=i;}}class Ye{constructor(e,t,i,r,o){this.bucketInstanceId=e,this.featureIndex=t,this.sourceLayerIndex=i,this.bucketIndex=r,this.tileID=o;}}class Je{constructor(e){this.crossSourceCollisions=e,this.maxGroupID=0,this.collisionGroups={};}get(e){if(this.crossSourceCollisions)return {ID:0,predicate:null};if(!this.collisionGroups[e]){const t=++this.maxGroupID;this.collisionGroups[e]={ID:t,predicate:e=>e.collisionGroupID===t};}return this.collisionGroups[e]}}function Qe(e,i,r,o,a){const{horizontalAlign:s,verticalAlign:n}=t.getAnchorAlignment(e);return new t.Point(-(s-.5)*i+o[0]*a,-(n-.5)*r+o[1]*a)}class et{constructor(e,t,i,r,o){this.transform=e.clone(),this.terrain=t,this.collisionIndex=new Xe(this.transform),this.placements={},this.opacities={},this.variableOffsets={},this.stale=!1,this.commitTime=0,this.fadeDuration=i,this.retainedQueryData={},this.collisionGroups=new Je(r),this.collisionCircleArrays={},this.collisionBoxArrays=new Map,this.prevPlacement=o,o&&(o.prevPlacement=void 0),this.placedOrientations={};}_getTerrainElevationFunc(e){const t=this.terrain;return t?(i,r)=>t.getElevation(e,i,r):null}getBucketParts(e,i,r,o){const a=r.getBucket(i),s=r.latestFeatureIndex;if(!a||!s||i.id!==a.layerIds[0])return;const n=r.collisionBoxArray,l=a.layers[0].layout,c=a.layers[0].paint,h=Math.pow(2,this.transform.zoom-r.tileID.overscaledZ),u=r.tileSize/t.EXTENT,d=r.tileID.toUnwrapped(),_="map"===l.get("text-rotation-alignment"),p=t.pixelsToTileUnits(r,1,this.transform.zoom),m=t.translatePosition(this.collisionIndex.transform,r,c.get("text-translate"),c.get("text-translate-anchor")),f=t.translatePosition(this.collisionIndex.transform,r,c.get("icon-translate"),c.get("icon-translate-anchor")),g=Pe(_,this.transform,p);this.retainedQueryData[a.bucketInstanceId]=new Ye(a.bucketInstanceId,s,a.sourceLayerIndex,a.index,r.tileID);const v={bucket:a,layout:l,translationText:m,translationIcon:f,unwrappedTileID:d,pitchedLabelPlaneMatrix:g,scale:h,textPixelRatio:u,holdingForFade:r.holdingForFade(),collisionBoxArray:n,partiallyEvaluatedTextSize:t.evaluateSizeForZoom(a.textSizeData,this.transform.zoom),collisionGroup:this.collisionGroups.get(a.sourceID)};if(o)for(const t of a.sortKeyRanges){const{sortKey:i,symbolInstanceStart:r,symbolInstanceEnd:o}=t;e.push({sortKey:i,symbolInstanceStart:r,symbolInstanceEnd:o,parameters:v});}else e.push({symbolInstanceStart:0,symbolInstanceEnd:a.symbolInstances.length,parameters:v});}attemptAnchorPlacement(e,i,r,o,a,s,n,l,c,h,u,d,_,p,m,f,g,v,y,x){const b=t.TextAnchorEnum[e.textAnchor],w=[e.textOffset0,e.textOffset1],T=Qe(b,r,o,w,a),E=this.collisionIndex.placeCollisionBox(i,d,l,c,h,n,s,f,u.predicate,y,T,x);if((!v||this.collisionIndex.placeCollisionBox(v,d,l,c,h,n,s,g,u.predicate,y,T,x).placeable)&&E.placeable){let e;if(this.prevPlacement&&this.prevPlacement.variableOffsets[_.crossTileID]&&this.prevPlacement.placements[_.crossTileID]&&this.prevPlacement.placements[_.crossTileID].text&&(e=this.prevPlacement.variableOffsets[_.crossTileID].anchor),0===_.crossTileID)throw new Error("symbolInstance.crossTileID can't be 0");return this.variableOffsets[_.crossTileID]={textOffset:w,width:r,height:o,anchor:b,textBoxScale:a,prevAnchor:e},this.markUsedJustification(p,b,_,m),p.allowVerticalPlacement&&(this.markUsedOrientation(p,m,_),this.placedOrientations[_.crossTileID]=m),{shift:T,placedGlyphBoxes:E}}}placeLayerBucketPart(e,i,r){const{bucket:o,layout:a,translationText:s,translationIcon:n,unwrappedTileID:l,pitchedLabelPlaneMatrix:c,textPixelRatio:h,holdingForFade:u,collisionBoxArray:d,partiallyEvaluatedTextSize:_,collisionGroup:p}=e.parameters,m=a.get("text-optional"),f=a.get("icon-optional"),g=t.getOverlapMode(a,"text-overlap","text-allow-overlap"),v="always"===g,y=t.getOverlapMode(a,"icon-overlap","icon-allow-overlap"),x="always"===y,b="map"===a.get("text-rotation-alignment"),w="map"===a.get("text-pitch-alignment"),T="none"!==a.get("icon-text-fit"),E="viewport-y"===a.get("symbol-z-order"),P=v&&(x||!o.hasIconData()||f),I=x&&(v||!o.hasTextData()||m);!o.collisionArrays&&d&&o.deserializeCollisionBoxes(d);const C=this.retainedQueryData[o.bucketInstanceId].tileID,M=this._getTerrainElevationFunc(C),S=this.transform.getFastPathSimpleProjectionMatrix(C),R=(e,d,x)=>{var E,R;if(i[e.crossTileID])return;if(u)return void(this.placements[e.crossTileID]=new Ke(!1,!1,!1));let D=!1,z=!1,L=!0,A=null,k={box:null,placeable:!1,offscreen:null,occluded:!1},F={box:null,placeable:!1,offscreen:null},B=null,O=null,U=null,j=0,N=0,G=0;d.textFeatureIndex?j=d.textFeatureIndex:e.useRuntimeCollisionCircles&&(j=e.featureIndex),d.verticalTextFeatureIndex&&(N=d.verticalTextFeatureIndex);const Z=d.textBox;if(Z){const i=i=>{let r=t.WritingMode.horizontal;if(o.allowVerticalPlacement&&!i&&this.prevPlacement){const t=this.prevPlacement.placedOrientations[e.crossTileID];t&&(this.placedOrientations[e.crossTileID]=t,r=t,this.markUsedOrientation(o,r,e));}return r},a=(i,r)=>{if(o.allowVerticalPlacement&&e.numVerticalGlyphVertices>0&&d.verticalTextBox){for(const e of o.writingModes)if(e===t.WritingMode.vertical?(k=r(),F=k):k=i(),k&&k.placeable)break}else k=i();},c=e.textAnchorOffsetStartIndex,u=e.textAnchorOffsetEndIndex;if(u===c){const r=(t,i)=>{const r=this.collisionIndex.placeCollisionBox(t,g,h,C,l,w,b,s,p.predicate,M,void 0,S);return r&&r.placeable&&(this.markUsedOrientation(o,i,e),this.placedOrientations[e.crossTileID]=i),r};a((()=>r(Z,t.WritingMode.horizontal)),(()=>{const i=d.verticalTextBox;return o.allowVerticalPlacement&&e.numVerticalGlyphVertices>0&&i?r(i,t.WritingMode.vertical):{box:null,offscreen:null}})),i(k&&k.placeable);}else {let _=t.TextAnchorEnum[null===(R=null===(E=this.prevPlacement)||void 0===E?void 0:E.variableOffsets[e.crossTileID])||void 0===R?void 0:R.anchor];const m=(t,i,a)=>{const d=t.x2-t.x1,m=t.y2-t.y1,f=e.textBoxScale,v=T&&"never"===y?i:null;let x=null,E="never"===g?1:2,P="never";_&&E++;for(let i=0;im(Z,d.iconBox,t.WritingMode.horizontal)),(()=>{const i=d.verticalTextBox;return o.allowVerticalPlacement&&(!k||!k.placeable)&&e.numVerticalGlyphVertices>0&&i?m(i,d.verticalIconBox,t.WritingMode.vertical):{box:null,occluded:!0,offscreen:null}})),k&&(D=k.placeable,L=k.offscreen);const f=i(k&&k.placeable);if(!D&&this.prevPlacement){const t=this.prevPlacement.variableOffsets[e.crossTileID];t&&(this.variableOffsets[e.crossTileID]=t,this.markUsedJustification(o,t.anchor,e,f));}}}if(B=k,D=B&&B.placeable,L=B&&B.offscreen,e.useRuntimeCollisionCircles){const i=o.text.placedSymbolArray.get(e.centerJustifiedTextSymbolIndex),n=t.evaluateSizeForFeature(o.textSizeData,_,i),h=a.get("text-padding");O=this.collisionIndex.placeCollisionCircles(g,i,o.lineVertexArray,o.glyphOffsetArray,n,l,c,r,w,p.predicate,e.collisionCircleDiameter,h,s,M),O.circles.length&&O.collisionDetected&&!r&&t.warnOnce("Collisions detected, but collision boxes are not shown"),D=v||O.circles.length>0&&!O.collisionDetected,L=L&&O.offscreen;}if(d.iconFeatureIndex&&(G=d.iconFeatureIndex),d.iconBox){const e=e=>this.collisionIndex.placeCollisionBox(e,y,h,C,l,w,b,n,p.predicate,M,T&&A?A:void 0,S);F&&F.placeable&&d.verticalIconBox?(U=e(d.verticalIconBox),z=U.placeable):(U=e(d.iconBox),z=U.placeable),L=L&&U.offscreen;}const V=m||0===e.numHorizontalGlyphVertices&&0===e.numVerticalGlyphVertices,q=f||0===e.numIconVertices;V||q?q?V||(z=z&&D):D=z&&D:z=D=z&&D;const W=z&&U.placeable;if(D&&B.placeable&&this.collisionIndex.insertCollisionBox(B.box,g,a.get("text-ignore-placement"),o.bucketInstanceId,F&&F.placeable&&N?N:j,p.ID),W&&this.collisionIndex.insertCollisionBox(U.box,y,a.get("icon-ignore-placement"),o.bucketInstanceId,G,p.ID),O&&D&&this.collisionIndex.insertCollisionCircles(O.circles,g,a.get("text-ignore-placement"),o.bucketInstanceId,j,p.ID),r&&this.storeCollisionData(o.bucketInstanceId,x,d,B,U,O),0===e.crossTileID)throw new Error("symbolInstance.crossTileID can't be 0");if(0===o.bucketInstanceId)throw new Error("bucket.bucketInstanceId can't be 0");this.placements[e.crossTileID]=new Ke((D||P)&&!(null==B?void 0:B.occluded),(z||I)&&!(null==U?void 0:U.occluded),L||o.justReloaded),i[e.crossTileID]=!0;};if(E){if(0!==e.symbolInstanceStart)throw new Error("bucket.bucketInstanceId should be 0");const t=o.getSortedSymbolIndexes(-this.transform.bearingInRadians);for(let e=t.length-1;e>=0;--e){const i=t[e];R(o.symbolInstances.get(i),o.collisionArrays[i],i);}}else for(let t=e.symbolInstanceStart;t=0&&(e.text.placedSymbolArray.get(t).crossTileID=a>=0&&t!==a?0:r.crossTileID);}markUsedOrientation(e,i,r){const o=i===t.WritingMode.horizontal||i===t.WritingMode.horizontalOnly?i:0,a=i===t.WritingMode.vertical?i:0,s=[r.leftJustifiedTextSymbolIndex,r.centerJustifiedTextSymbolIndex,r.rightJustifiedTextSymbolIndex];for(const t of s)e.text.placedSymbolArray.get(t).placedOrientation=o;r.verticalPlacedTextSymbolIndex&&(e.text.placedSymbolArray.get(r.verticalPlacedTextSymbolIndex).placedOrientation=a);}commit(e){this.commitTime=e,this.zoomAtLastRecencyCheck=this.transform.zoom;const t=this.prevPlacement;let i=!1;this.prevZoomAdjustment=t?t.zoomAdjustment(this.transform.zoom):0;const r=t?t.symbolFadeChange(e):1,o=t?t.opacities:{},a=t?t.variableOffsets:{},s=t?t.placedOrientations:{};for(const e in this.placements){const t=this.placements[e],a=o[e];a?(this.opacities[e]=new He(a,r,t.text,t.icon),i=i||t.text!==a.text.placed||t.icon!==a.icon.placed):(this.opacities[e]=new He(null,r,t.text,t.icon,t.skipFade),i=i||t.text||t.icon);}for(const e in o){const t=o[e];if(!this.opacities[e]){const o=new He(t,r,!1,!1);o.isHidden()||(this.opacities[e]=o,i=i||t.text.placed||t.icon.placed);}}for(const e in a)this.variableOffsets[e]||!this.opacities[e]||this.opacities[e].isHidden()||(this.variableOffsets[e]=a[e]);for(const e in s)this.placedOrientations[e]||!this.opacities[e]||this.opacities[e].isHidden()||(this.placedOrientations[e]=s[e]);if(t&&void 0===t.lastPlacementChangeTime)throw new Error("Last placement time for previous placement is not defined");i?this.lastPlacementChangeTime=e:"number"!=typeof this.lastPlacementChangeTime&&(this.lastPlacementChangeTime=t?t.lastPlacementChangeTime:e);}updateLayerOpacities(e,t){const i={};for(const r of t){const t=r.getBucket(e);t&&r.latestFeatureIndex&&e.id===t.layerIds[0]&&this.updateBucketOpacities(t,r.tileID,i,r.collisionBoxArray);}}updateBucketOpacities(e,i,r,o){e.hasTextData()&&(e.text.opacityVertexArray.clear(),e.text.hasVisibleVertices=!1),e.hasIconData()&&(e.icon.opacityVertexArray.clear(),e.icon.hasVisibleVertices=!1),e.hasIconCollisionBoxData()&&e.iconCollisionBox.collisionVertexArray.clear(),e.hasTextCollisionBoxData()&&e.textCollisionBox.collisionVertexArray.clear();const a=e.layers[0],s=a.layout,n=new He(null,0,!1,!1,!0),l=s.get("text-allow-overlap"),c=s.get("icon-allow-overlap"),h=a._unevaluatedLayout.hasValue("text-variable-anchor")||a._unevaluatedLayout.hasValue("text-variable-anchor-offset"),u="map"===s.get("text-rotation-alignment"),d="map"===s.get("text-pitch-alignment"),_="none"!==s.get("icon-text-fit"),p=new He(null,0,l&&(c||!e.hasIconData()||s.get("icon-optional")),c&&(l||!e.hasTextData()||s.get("text-optional")),!0);!e.collisionArrays&&o&&(e.hasIconCollisionBoxData()||e.hasTextCollisionBoxData())&&e.deserializeCollisionBoxes(o);const m=(e,t,i)=>{for(let r=0;r0,v=this.placedOrientations[o.crossTileID],y=v===t.WritingMode.vertical,x=v===t.WritingMode.horizontal||v===t.WritingMode.horizontalOnly;if(a>0||s>0){const t=ct(c.text);m(e.text,a,y?ht:t),m(e.text,s,x?ht:t);const i=c.text.isHidden();[o.rightJustifiedTextSymbolIndex,o.centerJustifiedTextSymbolIndex,o.leftJustifiedTextSymbolIndex].forEach((t=>{t>=0&&(e.text.placedSymbolArray.get(t).hidden=i||y?1:0);})),o.verticalPlacedTextSymbolIndex>=0&&(e.text.placedSymbolArray.get(o.verticalPlacedTextSymbolIndex).hidden=i||x?1:0);const r=this.variableOffsets[o.crossTileID];r&&this.markUsedJustification(e,r.anchor,o,v);const n=this.placedOrientations[o.crossTileID];n&&(this.markUsedJustification(e,"left",o,n),this.markUsedOrientation(e,n,o));}if(g){const t=ct(c.icon),i=!(_&&o.verticalPlacedIconSymbolIndex&&y);o.placedIconSymbolIndex>=0&&(m(e.icon,o.numIconVertices,i?t:ht),e.icon.placedSymbolArray.get(o.placedIconSymbolIndex).hidden=c.icon.isHidden()),o.verticalPlacedIconSymbolIndex>=0&&(m(e.icon,o.numVerticalIconVertices,i?ht:t),e.icon.placedSymbolArray.get(o.verticalPlacedIconSymbolIndex).hidden=c.icon.isHidden());}const b=f&&f.has(i)?f.get(i):{text:null,icon:null};if(e.hasIconCollisionBoxData()||e.hasTextCollisionBoxData()){const r=e.collisionArrays[i];if(r){let i=new t.Point(0,0);if(r.textBox||r.verticalTextBox){let t=!0;if(h){const e=this.variableOffsets[l];e?(i=Qe(e.anchor,e.width,e.height,e.textOffset,e.textBoxScale),u&&i._rotate(d?-this.transform.bearingInRadians:this.transform.bearingInRadians)):t=!1;}if(r.textBox||r.verticalTextBox){let o;r.textBox&&(o=y),r.verticalTextBox&&(o=x),tt(e.textCollisionBox.collisionVertexArray,c.text.placed,!t||o,b.text,i.x,i.y);}}if(r.iconBox||r.verticalIconBox){const t=Boolean(!x&&r.verticalIconBox);let o;r.iconBox&&(o=t),r.verticalIconBox&&(o=!t),tt(e.iconCollisionBox.collisionVertexArray,c.icon.placed,o,b.icon,_?i.x:0,_?i.y:0);}}}}if(e.sortFeatures(-this.transform.bearingInRadians),this.retainedQueryData[e.bucketInstanceId]&&(this.retainedQueryData[e.bucketInstanceId].featureSortOrder=e.featureSortOrder),e.hasTextData()&&e.text.opacityVertexBuffer&&e.text.opacityVertexBuffer.updateData(e.text.opacityVertexArray),e.hasIconData()&&e.icon.opacityVertexBuffer&&e.icon.opacityVertexBuffer.updateData(e.icon.opacityVertexArray),e.hasIconCollisionBoxData()&&e.iconCollisionBox.collisionVertexBuffer&&e.iconCollisionBox.collisionVertexBuffer.updateData(e.iconCollisionBox.collisionVertexArray),e.hasTextCollisionBoxData()&&e.textCollisionBox.collisionVertexBuffer&&e.textCollisionBox.collisionVertexBuffer.updateData(e.textCollisionBox.collisionVertexArray),e.text.opacityVertexArray.length!==e.text.layoutVertexArray.length/4)throw new Error(`bucket.text.opacityVertexArray.length (= ${e.text.opacityVertexArray.length}) !== bucket.text.layoutVertexArray.length (= ${e.text.layoutVertexArray.length}) / 4`);if(e.icon.opacityVertexArray.length!==e.icon.layoutVertexArray.length/4)throw new Error(`bucket.icon.opacityVertexArray.length (= ${e.icon.opacityVertexArray.length}) !== bucket.icon.layoutVertexArray.length (= ${e.icon.layoutVertexArray.length}) / 4`);e.bucketInstanceId in this.collisionCircleArrays&&(e.collisionCircleArray=this.collisionCircleArrays[e.bucketInstanceId],delete this.collisionCircleArrays[e.bucketInstanceId]);}symbolFadeChange(e){return 0===this.fadeDuration?1:(e-this.commitTime)/this.fadeDuration+this.prevZoomAdjustment}zoomAdjustment(e){return Math.max(0,(this.transform.zoom-e)/1.5)}hasTransitions(e){return this.stale||e-this.lastPlacementChangeTimee}setStale(){this.stale=!0;}}function tt(e,t,i,r,o,a){r&&0!==r.length||(r=[0,0,0,0]);const s=r[0]-We,n=r[1]-We,l=r[2]-We,c=r[3]-We;e.emplaceBack(t?1:0,i?1:0,o||0,a||0,s,n),e.emplaceBack(t?1:0,i?1:0,o||0,a||0,l,n),e.emplaceBack(t?1:0,i?1:0,o||0,a||0,l,c),e.emplaceBack(t?1:0,i?1:0,o||0,a||0,s,c);}const it=Math.pow(2,25),rt=Math.pow(2,24),ot=Math.pow(2,17),at=Math.pow(2,16),st=Math.pow(2,9),nt=Math.pow(2,8),lt=Math.pow(2,1);function ct(e){if(0===e.opacity&&!e.placed)return 0;if(1===e.opacity&&e.placed)return 4294967295;const t=e.placed?1:0,i=Math.floor(127*e.opacity);return i*it+t*rt+i*ot+t*at+i*st+t*nt+i*lt+t}const ht=0;class ut{constructor(e){this._sortAcrossTiles="viewport-y"!==e.layout.get("symbol-z-order")&&!e.layout.get("symbol-sort-key").isConstant(),this._currentTileIndex=0,this._currentPartIndex=0,this._seenCrossTileIDs={},this._bucketParts=[];}continuePlacement(e,t,i,r,o){const a=this._bucketParts;for(;this._currentTileIndexe.sortKey-t.sortKey)));this._currentPartIndex!this._forceFullPlacement&&f.now()-r>2;for(;this._currentPlacementIndex>=0;){const r=t[e[this._currentPlacementIndex]],a=this.placement.collisionIndex.transform.zoom;if("symbol"===r.type&&(!r.minzoom||r.minzoom<=a)&&(!r.maxzoom||r.maxzoom>a)){if(this._inProgressLayer||(this._inProgressLayer=new ut(r)),this._inProgressLayer.continuePlacement(i[r.source],this.placement,this._showCollisionBoxes,r,o))return;delete this._inProgressLayer;}this._currentPlacementIndex--;}this._done=!0;}commit(e){return this.placement.commit(e),this.placement}}const _t=512/t.EXTENT/2;class pt{constructor(e,i,r){this.tileID=e,this.bucketInstanceId=r,this._symbolsByKey={};const o=new Map;for(let e=0;e({x:Math.floor(e.anchorX*_t),y:Math.floor(e.anchorY*_t)}))),crossTileIDs:i.map((e=>e.crossTileID))};if(r.positions.length>128){const e=new t.KDBush(r.positions.length,16,Uint16Array);for(const{x:t,y:i}of r.positions)e.add(t,i);e.finish(),delete r.positions,r.index=e;}this._symbolsByKey[e]=r;}}getScaledCoordinates(e,i){const{x:r,y:o,z:a}=this.tileID.canonical,{x:s,y:n,z:l}=i.canonical,c=_t/Math.pow(2,l-a),h=(n*t.EXTENT+e.anchorY)*c,u=o*t.EXTENT*_t;return {x:Math.floor((s*t.EXTENT+e.anchorX)*c-r*t.EXTENT*_t),y:Math.floor(h-u)}}findMatches(e,t,i){const r=this.tileID.canonical.ze))}}class mt{constructor(){this.maxCrossTileID=0;}generate(){return ++this.maxCrossTileID}}class ft{constructor(){this.indexes={},this.usedCrossTileIDs={},this.lng=0;}handleWrapJump(e){const t=Math.round((e-this.lng)/360);if(0!==t)for(const e in this.indexes){const i=this.indexes[e],r={};for(const e in i){const o=i[e];o.tileID=o.tileID.unwrapTo(o.tileID.wrap+t),r[o.tileID.key]=o;}this.indexes[e]=r;}this.lng=e;}addBucket(e,t,i){if(this.indexes[e.overscaledZ]&&this.indexes[e.overscaledZ][e.key]){if(this.indexes[e.overscaledZ][e.key].bucketInstanceId===t.bucketInstanceId)return !1;this.removeBucketCrossTileIDs(e.overscaledZ,this.indexes[e.overscaledZ][e.key]);}for(let e=0;ee.overscaledZ)for(const i in o){const a=o[i];a.tileID.isChildOf(e)&&a.findMatches(t.symbolInstances,e,r);}else {const a=o[e.scaledTo(Number(i)).key];a&&a.findMatches(t.symbolInstances,e,r);}}for(let e=0;e{t[e]=!0;}));for(const e in this.layerIndexes)t[e]||delete this.layerIndexes[e];}}var vt="void main() {gl_FragColor=vec4(1.0);}";const yt={prelude:xt("#ifdef GL_ES\nprecision mediump float;\n#else\n#if !defined(lowp)\n#define lowp\n#endif\n#if !defined(mediump)\n#define mediump\n#endif\n#if !defined(highp)\n#define highp\n#endif\n#endif\n","#ifdef GL_ES\nprecision highp float;\n#else\n#if !defined(lowp)\n#define lowp\n#endif\n#if !defined(mediump)\n#define mediump\n#endif\n#if !defined(highp)\n#define highp\n#endif\n#endif\nvec2 unpack_float(const float packedValue) {int packedIntValue=int(packedValue);int v0=packedIntValue/256;return vec2(v0,packedIntValue-v0*256);}vec2 unpack_opacity(const float packedOpacity) {int intOpacity=int(packedOpacity)/2;return vec2(float(intOpacity)/127.0,mod(packedOpacity,2.0));}vec4 decode_color(const vec2 encodedColor) {return vec4(unpack_float(encodedColor[0])/255.0,unpack_float(encodedColor[1])/255.0\n);}float unpack_mix_vec2(const vec2 packedValue,const float t) {return mix(packedValue[0],packedValue[1],t);}vec4 unpack_mix_color(const vec4 packedColors,const float t) {vec4 minColor=decode_color(vec2(packedColors[0],packedColors[1]));vec4 maxColor=decode_color(vec2(packedColors[2],packedColors[3]));return mix(minColor,maxColor,t);}vec2 get_pattern_pos(const vec2 pixel_coord_upper,const vec2 pixel_coord_lower,const vec2 pattern_size,const float tile_units_to_pixels,const vec2 pos) {vec2 offset=mod(mod(mod(pixel_coord_upper,pattern_size)*256.0,pattern_size)*256.0+pixel_coord_lower,pattern_size);return (tile_units_to_pixels*pos+offset)/pattern_size;}mat3 rotationMatrixFromAxisAngle(vec3 u,float angle) {float c=cos(angle);float s=sin(angle);float c2=1.0-c;return mat3(u.x*u.x*c2+ c,u.x*u.y*c2-u.z*s,u.x*u.z*c2+u.y*s,u.y*u.x*c2+u.z*s,u.y*u.y*c2+ c,u.y*u.z*c2-u.x*s,u.z*u.x*c2-u.y*s,u.z*u.y*c2+u.x*s,u.z*u.z*c2+ c\n);}\n#ifdef TERRAIN3D\nuniform sampler2D u_terrain;uniform float u_terrain_dim;uniform mat4 u_terrain_matrix;uniform vec4 u_terrain_unpack;uniform float u_terrain_exaggeration;uniform highp sampler2D u_depth;\n#endif\nconst highp vec4 bitSh=vec4(256.*256.*256.,256.*256.,256.,1.);const highp vec4 bitShifts=vec4(1.)/bitSh;highp float unpack(highp vec4 color) {return dot(color,bitShifts);}highp float depthOpacity(vec3 frag) {\n#ifdef TERRAIN3D\nhighp float d=unpack(texture2D(u_depth,frag.xy*0.5+0.5))+0.0001-frag.z;return 1.0-max(0.0,min(1.0,-d*500.0));\n#else\nreturn 1.0;\n#endif\n}float calculate_visibility(vec4 pos) {\n#ifdef TERRAIN3D\nvec3 frag=pos.xyz/pos.w;highp float d=depthOpacity(frag);if (d > 0.95) return 1.0;return (d+depthOpacity(frag+vec3(0.0,0.01,0.0)))/2.0;\n#else\nreturn 1.0;\n#endif\n}float ele(vec2 pos) {\n#ifdef TERRAIN3D\nvec4 rgb=(texture2D(u_terrain,pos)*255.0)*u_terrain_unpack;return rgb.r+rgb.g+rgb.b-u_terrain_unpack.a;\n#else\nreturn 0.0;\n#endif\n}float get_elevation(vec2 pos) {\n#ifdef TERRAIN3D\nvec2 coord=(u_terrain_matrix*vec4(pos,0.0,1.0)).xy*u_terrain_dim+1.0;vec2 f=fract(coord);vec2 c=(floor(coord)+0.5)/(u_terrain_dim+2.0);float d=1.0/(u_terrain_dim+2.0);float tl=ele(c);float tr=ele(c+vec2(d,0.0));float bl=ele(c+vec2(0.0,d));float br=ele(c+vec2(d,d));float elevation=mix(mix(tl,tr,f.x),mix(bl,br,f.x),f.y);return elevation*u_terrain_exaggeration;\n#else\nreturn 0.0;\n#endif\n}const float PI=3.141592653589793;uniform mat4 u_projection_matrix;"),projectionMercator:xt("","float projectLineThickness(float tileY) {return 1.0;}float projectCircleRadius(float tileY) {return 1.0;}vec4 projectTile(vec2 p) {vec4 result=u_projection_matrix*vec4(p,0.0,1.0);return result;}vec4 projectTile(vec2 p,vec2 rawPos) {vec4 result=u_projection_matrix*vec4(p,0.0,1.0);if (rawPos.y <-32767.5 || rawPos.y > 32766.5) {result.z=-10000000.0;}return result;}vec4 projectTileWithElevation(vec2 posInTile,float elevation) {return u_projection_matrix*vec4(posInTile,elevation,1.0);}vec4 projectTileFor3D(vec2 posInTile,float elevation) {return projectTileWithElevation(posInTile,elevation);}"),projectionGlobe:xt("","#define GLOBE_RADIUS 6371008.8\nuniform highp vec4 u_projection_tile_mercator_coords;uniform highp vec4 u_projection_clipping_plane;uniform highp float u_projection_transition;uniform mat4 u_projection_fallback_matrix;vec3 globeRotateVector(vec3 vec,vec2 angles) {vec3 axisRight=vec3(vec.z,0.0,-vec.x);vec3 axisUp=cross(axisRight,vec);axisRight=normalize(axisRight);axisUp=normalize(axisUp);vec2 t=tan(angles);return normalize(vec+axisRight*t.x+axisUp*t.y);}mat3 globeGetRotationMatrix(vec3 spherePos) {vec3 axisRight=vec3(spherePos.z,0.0,-spherePos.x);vec3 axisDown=cross(axisRight,spherePos);axisRight=normalize(axisRight);axisDown=normalize(axisDown);return mat3(axisRight,axisDown,spherePos\n);}float circumferenceRatioAtTileY(float tileY) {float mercator_pos_y=u_projection_tile_mercator_coords.y+u_projection_tile_mercator_coords.w*tileY;float spherical_y=2.0*atan(exp(PI-(mercator_pos_y*PI*2.0)))-PI*0.5;return cos(spherical_y);}float projectLineThickness(float tileY) {float thickness=1.0/circumferenceRatioAtTileY(tileY); \nif (u_projection_transition < 0.999) {return mix(1.0,thickness,u_projection_transition);} else {return thickness;}}vec3 projectToSphere(vec2 posInTile,vec2 rawPos) {vec2 mercator_pos=u_projection_tile_mercator_coords.xy+u_projection_tile_mercator_coords.zw*posInTile;vec2 spherical;spherical.x=mercator_pos.x*PI*2.0+PI;spherical.y=2.0*atan(exp(PI-(mercator_pos.y*PI*2.0)))-PI*0.5;float len=cos(spherical.y);vec3 pos=vec3(sin(spherical.x)*len,sin(spherical.y),cos(spherical.x)*len\n);if (rawPos.y <-32767.5) {pos=vec3(0.0,1.0,0.0);}if (rawPos.y > 32766.5) {pos=vec3(0.0,-1.0,0.0);}return pos;}vec3 projectToSphere(vec2 posInTile) {return projectToSphere(posInTile,vec2(0.0,0.0));}float globeComputeClippingZ(vec3 spherePos) {return (1.0-(dot(spherePos,u_projection_clipping_plane.xyz)+u_projection_clipping_plane.w));}vec4 interpolateProjection(vec2 posInTile,vec3 spherePos,float elevation) {vec3 elevatedPos=spherePos*(1.0+elevation/GLOBE_RADIUS);vec4 globePosition=u_projection_matrix*vec4(elevatedPos,1.0);globePosition.z=globeComputeClippingZ(elevatedPos)*globePosition.w;if (u_projection_transition < 0.999) {vec4 flatPosition=u_projection_fallback_matrix*vec4(posInTile,elevation,1.0);const float z_globeness_threshold=0.2;vec4 result=globePosition;result.z=mix(0.0,globePosition.z,clamp((u_projection_transition-z_globeness_threshold)/(1.0-z_globeness_threshold),0.0,1.0));result.xyw=mix(flatPosition.xyw,globePosition.xyw,u_projection_transition);if ((posInTile.y <-32767.5) || (posInTile.y > 32766.5)) {result=globePosition;const float poles_hidden_anim_percentage=0.02;result.z=mix(globePosition.z,100.0,pow(max((1.0-u_projection_transition)/poles_hidden_anim_percentage,0.0),8.0));}return result;}return globePosition;}vec4 interpolateProjectionFor3D(vec2 posInTile,vec3 spherePos,float elevation) {vec3 elevatedPos=spherePos*(1.0+elevation/GLOBE_RADIUS);vec4 globePosition=u_projection_matrix*vec4(elevatedPos,1.0);vec4 fallbackPosition=u_projection_fallback_matrix*vec4(posInTile,elevation,1.0);return mix(fallbackPosition,globePosition,u_projection_transition);}vec4 projectTile(vec2 posInTile) {return interpolateProjection(posInTile,projectToSphere(posInTile),0.0);}vec4 projectTile(vec2 posInTile,vec2 rawPos) {return interpolateProjection(posInTile,projectToSphere(posInTile,rawPos),0.0);}vec4 projectTileWithElevation(vec2 posInTile,float elevation) {return interpolateProjection(posInTile,projectToSphere(posInTile),elevation);}vec4 projectTileFor3D(vec2 posInTile,float elevation) {vec3 spherePos=projectToSphere(posInTile);return interpolateProjectionFor3D(posInTile,spherePos,elevation);}"),background:xt("uniform vec4 u_color;uniform float u_opacity;void main() {gl_FragColor=u_color*u_opacity;\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","attribute vec2 a_pos;void main() {gl_Position=projectTile(a_pos);}"),backgroundPattern:xt("uniform vec2 u_pattern_tl_a;uniform vec2 u_pattern_br_a;uniform vec2 u_pattern_tl_b;uniform vec2 u_pattern_br_b;uniform vec2 u_texsize;uniform float u_mix;uniform float u_opacity;uniform sampler2D u_image;varying vec2 v_pos_a;varying vec2 v_pos_b;void main() {vec2 imagecoord=mod(v_pos_a,1.0);vec2 pos=mix(u_pattern_tl_a/u_texsize,u_pattern_br_a/u_texsize,imagecoord);vec4 color1=texture2D(u_image,pos);vec2 imagecoord_b=mod(v_pos_b,1.0);vec2 pos2=mix(u_pattern_tl_b/u_texsize,u_pattern_br_b/u_texsize,imagecoord_b);vec4 color2=texture2D(u_image,pos2);gl_FragColor=mix(color1,color2,u_mix)*u_opacity;\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","uniform vec2 u_pattern_size_a;uniform vec2 u_pattern_size_b;uniform vec2 u_pixel_coord_upper;uniform vec2 u_pixel_coord_lower;uniform float u_scale_a;uniform float u_scale_b;uniform float u_tile_units_to_pixels;attribute vec2 a_pos;varying vec2 v_pos_a;varying vec2 v_pos_b;void main() {gl_Position=projectTile(a_pos);v_pos_a=get_pattern_pos(u_pixel_coord_upper,u_pixel_coord_lower,u_scale_a*u_pattern_size_a,u_tile_units_to_pixels,a_pos);v_pos_b=get_pattern_pos(u_pixel_coord_upper,u_pixel_coord_lower,u_scale_b*u_pattern_size_b,u_tile_units_to_pixels,a_pos);}"),circle:xt("varying vec3 v_data;varying float v_visibility;\n#pragma mapbox: define highp vec4 color\n#pragma mapbox: define mediump float radius\n#pragma mapbox: define lowp float blur\n#pragma mapbox: define lowp float opacity\n#pragma mapbox: define highp vec4 stroke_color\n#pragma mapbox: define mediump float stroke_width\n#pragma mapbox: define lowp float stroke_opacity\nvoid main() {\n#pragma mapbox: initialize highp vec4 color\n#pragma mapbox: initialize mediump float radius\n#pragma mapbox: initialize lowp float blur\n#pragma mapbox: initialize lowp float opacity\n#pragma mapbox: initialize highp vec4 stroke_color\n#pragma mapbox: initialize mediump float stroke_width\n#pragma mapbox: initialize lowp float stroke_opacity\nvec2 extrude=v_data.xy;float extrude_length=length(extrude);float antialiased_blur=v_data.z;float opacity_t=smoothstep(0.0,antialiased_blur,extrude_length-1.0);float color_t=stroke_width < 0.01 ? 0.0 : smoothstep(antialiased_blur,0.0,extrude_length-radius/(radius+stroke_width));gl_FragColor=v_visibility*opacity_t*mix(color*opacity,stroke_color*stroke_opacity,color_t);const float epsilon=0.5/255.0;if (gl_FragColor.r < epsilon && gl_FragColor.g < epsilon && gl_FragColor.b < epsilon && gl_FragColor.a < epsilon) {discard;}\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","uniform bool u_scale_with_map;uniform bool u_pitch_with_map;uniform vec2 u_extrude_scale;uniform highp float u_globe_extrude_scale;uniform lowp float u_device_pixel_ratio;uniform highp float u_camera_to_center_distance;uniform vec2 u_translate;attribute vec2 a_pos;varying vec3 v_data;varying float v_visibility;\n#pragma mapbox: define highp vec4 color\n#pragma mapbox: define mediump float radius\n#pragma mapbox: define lowp float blur\n#pragma mapbox: define lowp float opacity\n#pragma mapbox: define highp vec4 stroke_color\n#pragma mapbox: define mediump float stroke_width\n#pragma mapbox: define lowp float stroke_opacity\nvoid main(void) {\n#pragma mapbox: initialize highp vec4 color\n#pragma mapbox: initialize mediump float radius\n#pragma mapbox: initialize lowp float blur\n#pragma mapbox: initialize lowp float opacity\n#pragma mapbox: initialize highp vec4 stroke_color\n#pragma mapbox: initialize mediump float stroke_width\n#pragma mapbox: initialize lowp float stroke_opacity\nvec2 pos_raw=a_pos+32768.0;vec2 extrude=vec2(mod(pos_raw,8.0)/7.0*2.0-1.0);vec2 circle_center=floor(pos_raw/8.0)+u_translate;float ele=get_elevation(circle_center);v_visibility=calculate_visibility(projectTileWithElevation(circle_center,ele));if (u_pitch_with_map) {\n#ifdef GLOBE\nvec3 center_vector=projectToSphere(circle_center);\n#endif\nfloat angle_scale=u_globe_extrude_scale;vec2 corner_position=circle_center;if (u_scale_with_map) {angle_scale*=(radius+stroke_width);corner_position+=extrude*u_extrude_scale*(radius+stroke_width);} else {\n#ifdef GLOBE\nvec4 projected_center=interpolateProjection(circle_center,center_vector,ele);\n#else\nvec4 projected_center=projectTileWithElevation(circle_center,ele);\n#endif\ncorner_position+=extrude*u_extrude_scale*(radius+stroke_width)*(projected_center.w/u_camera_to_center_distance);angle_scale*=(radius+stroke_width)*(projected_center.w/u_camera_to_center_distance);}\n#ifdef GLOBE\nvec2 angles=extrude*angle_scale;vec3 corner_vector=globeRotateVector(center_vector,angles);gl_Position=interpolateProjection(corner_position,corner_vector,ele);\n#else\ngl_Position=projectTileWithElevation(corner_position,ele);\n#endif\n} else {gl_Position=projectTileWithElevation(circle_center,ele);if (gl_Position.z/gl_Position.w > 1.0) {gl_Position.xy=vec2(10000.0);}if (u_scale_with_map) {gl_Position.xy+=extrude*(radius+stroke_width)*u_extrude_scale*u_camera_to_center_distance;} else {gl_Position.xy+=extrude*(radius+stroke_width)*u_extrude_scale*gl_Position.w;}}float antialiasblur=-max(1.0/u_device_pixel_ratio/(radius+stroke_width),blur);v_data=vec3(extrude.x,extrude.y,antialiasblur);}"),clippingMask:xt(vt,"attribute vec2 a_pos;void main() {gl_Position=projectTile(a_pos);}"),heatmap:xt("uniform highp float u_intensity;varying vec2 v_extrude;\n#pragma mapbox: define highp float weight\n#define GAUSS_COEF 0.3989422804014327\nvoid main() {\n#pragma mapbox: initialize highp float weight\nfloat d=-0.5*3.0*3.0*dot(v_extrude,v_extrude);float val=weight*u_intensity*GAUSS_COEF*exp(d);gl_FragColor=vec4(val,1.0,1.0,1.0);\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","uniform float u_extrude_scale;uniform float u_opacity;uniform float u_intensity;uniform highp float u_globe_extrude_scale;attribute vec2 a_pos;varying vec2 v_extrude;\n#pragma mapbox: define highp float weight\n#pragma mapbox: define mediump float radius\nconst highp float ZERO=1.0/255.0/16.0;\n#define GAUSS_COEF 0.3989422804014327\nvoid main(void) {\n#pragma mapbox: initialize highp float weight\n#pragma mapbox: initialize mediump float radius\nvec2 pos_raw=a_pos+32768.0;vec2 unscaled_extrude=vec2(mod(pos_raw,8.0)/7.0*2.0-1.0);float S=sqrt(-2.0*log(ZERO/weight/u_intensity/GAUSS_COEF))/3.0;v_extrude=S*unscaled_extrude;vec2 extrude=v_extrude*radius*u_extrude_scale;vec2 circle_center=floor(pos_raw/8.0);\n#ifdef GLOBE\nvec2 angles=v_extrude*radius*u_globe_extrude_scale;vec3 center_vector=projectToSphere(circle_center);vec3 corner_vector=globeRotateVector(center_vector,angles);gl_Position=interpolateProjection(circle_center+extrude,corner_vector,0.0);\n#else\ngl_Position=projectTileFor3D(circle_center+extrude,get_elevation(circle_center));\n#endif\n}"),heatmapTexture:xt("uniform sampler2D u_image;uniform sampler2D u_color_ramp;uniform float u_opacity;varying vec2 v_pos;void main() {float t=texture2D(u_image,v_pos).r;vec4 color=texture2D(u_color_ramp,vec2(t,0.5));gl_FragColor=color*u_opacity;\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(0.0);\n#endif\n}","uniform mat4 u_matrix;uniform vec2 u_world;attribute vec2 a_pos;varying vec2 v_pos;void main() {gl_Position=u_matrix*vec4(a_pos*u_world,0,1);v_pos.x=a_pos.x;v_pos.y=1.0-a_pos.y;}"),collisionBox:xt("varying float v_placed;varying float v_notUsed;void main() {float alpha=0.5;gl_FragColor=vec4(1.0,0.0,0.0,1.0)*alpha;if (v_placed > 0.5) {gl_FragColor=vec4(0.0,0.0,1.0,0.5)*alpha;}if (v_notUsed > 0.5) {gl_FragColor*=.1;}}","attribute vec2 a_anchor_pos;attribute vec2 a_placed;attribute vec2 a_box_real;uniform vec2 u_pixel_extrude_scale;varying float v_placed;varying float v_notUsed;void main() {gl_Position=projectTileWithElevation(a_anchor_pos,get_elevation(a_anchor_pos));gl_Position.xy=((a_box_real+0.5)*u_pixel_extrude_scale*2.0-1.0)*vec2(1.0,-1.0)*gl_Position.w;if (gl_Position.z/gl_Position.w < 1.1) {gl_Position.z=0.5;}v_placed=a_placed.x;v_notUsed=a_placed.y;}"),collisionCircle:xt("varying float v_radius;varying vec2 v_extrude;varying float v_collision;void main() {float alpha=0.5;float stroke_radius=0.9;float distance_to_center=length(v_extrude);float distance_to_edge=abs(distance_to_center-v_radius);float opacity_t=smoothstep(-stroke_radius,0.0,-distance_to_edge);vec4 color=mix(vec4(0.0,0.0,1.0,0.5),vec4(1.0,0.0,0.0,1.0),v_collision);gl_FragColor=color*alpha*opacity_t;}","attribute vec2 a_pos;attribute float a_radius;attribute vec2 a_flags;uniform vec2 u_viewport_size;varying float v_radius;varying vec2 v_extrude;varying float v_collision;void main() {float radius=a_radius;float collision=a_flags.x;float vertexIdx=a_flags.y;vec2 quadVertexOffset=vec2(mix(-1.0,1.0,float(vertexIdx >=2.0)),mix(-1.0,1.0,float(vertexIdx >=1.0 && vertexIdx <=2.0)));vec2 quadVertexExtent=quadVertexOffset*radius;float padding_factor=1.2;v_radius=radius;v_extrude=quadVertexExtent*padding_factor;v_collision=collision;gl_Position=vec4((a_pos/u_viewport_size*2.0-1.0)*vec2(1.0,-1.0),0.0,1.0)+vec4(quadVertexExtent*padding_factor/u_viewport_size*2.0,0.0,0.0);}"),debug:xt("uniform highp vec4 u_color;uniform sampler2D u_overlay;varying vec2 v_uv;void main() {vec4 overlay_color=texture2D(u_overlay,v_uv);gl_FragColor=mix(u_color,overlay_color,overlay_color.a);}","attribute vec2 a_pos;varying vec2 v_uv;uniform float u_overlay_scale;void main() {v_uv=a_pos/8192.0;gl_Position=projectTileWithElevation(a_pos*u_overlay_scale,get_elevation(a_pos));}"),depth:xt(vt,"attribute vec2 a_pos;void main() {\n#ifdef GLOBE\ngl_Position=projectTileFor3D(a_pos,0.0);\n#else\ngl_Position=u_projection_matrix*vec4(a_pos,0.0,1.0);\n#endif\n}"),fill:xt("#pragma mapbox: define highp vec4 color\n#pragma mapbox: define lowp float opacity\nvoid main() {\n#pragma mapbox: initialize highp vec4 color\n#pragma mapbox: initialize lowp float opacity\ngl_FragColor=color*opacity;\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","uniform vec2 u_fill_translate;attribute vec2 a_pos;\n#pragma mapbox: define highp vec4 color\n#pragma mapbox: define lowp float opacity\nvoid main() {\n#pragma mapbox: initialize highp vec4 color\n#pragma mapbox: initialize lowp float opacity\ngl_Position=projectTile(a_pos+u_fill_translate,a_pos);}"),fillOutline:xt("varying vec2 v_pos;\n#ifdef GLOBE\nvarying float v_depth;\n#endif\n#pragma mapbox: define highp vec4 outline_color\n#pragma mapbox: define lowp float opacity\nvoid main() {\n#pragma mapbox: initialize highp vec4 outline_color\n#pragma mapbox: initialize lowp float opacity\nfloat dist=length(v_pos-gl_FragCoord.xy);float alpha=1.0-smoothstep(0.0,1.0,dist);gl_FragColor=outline_color*(alpha*opacity);\n#ifdef GLOBE\nif (v_depth > 1.0) {discard;}\n#endif\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","uniform vec2 u_world;uniform vec2 u_fill_translate;attribute vec2 a_pos;varying vec2 v_pos;\n#ifdef GLOBE\nvarying float v_depth;\n#endif\n#pragma mapbox: define highp vec4 outline_color\n#pragma mapbox: define lowp float opacity\nvoid main() {\n#pragma mapbox: initialize highp vec4 outline_color\n#pragma mapbox: initialize lowp float opacity\ngl_Position=projectTile(a_pos+u_fill_translate,a_pos);v_pos=(gl_Position.xy/gl_Position.w+1.0)/2.0*u_world;\n#ifdef GLOBE\nv_depth=gl_Position.z/gl_Position.w;\n#endif\n}"),fillOutlinePattern:xt("uniform vec2 u_texsize;uniform sampler2D u_image;uniform float u_fade;varying vec2 v_pos_a;varying vec2 v_pos_b;varying vec2 v_pos;\n#ifdef GLOBE\nvarying float v_depth;\n#endif\n#pragma mapbox: define lowp float opacity\n#pragma mapbox: define lowp vec4 pattern_from\n#pragma mapbox: define lowp vec4 pattern_to\nvoid main() {\n#pragma mapbox: initialize lowp float opacity\n#pragma mapbox: initialize mediump vec4 pattern_from\n#pragma mapbox: initialize mediump vec4 pattern_to\nvec2 pattern_tl_a=pattern_from.xy;vec2 pattern_br_a=pattern_from.zw;vec2 pattern_tl_b=pattern_to.xy;vec2 pattern_br_b=pattern_to.zw;vec2 imagecoord=mod(v_pos_a,1.0);vec2 pos=mix(pattern_tl_a/u_texsize,pattern_br_a/u_texsize,imagecoord);vec4 color1=texture2D(u_image,pos);vec2 imagecoord_b=mod(v_pos_b,1.0);vec2 pos2=mix(pattern_tl_b/u_texsize,pattern_br_b/u_texsize,imagecoord_b);vec4 color2=texture2D(u_image,pos2);float dist=length(v_pos-gl_FragCoord.xy);float alpha=1.0-smoothstep(0.0,1.0,dist);gl_FragColor=mix(color1,color2,u_fade)*alpha*opacity;\n#ifdef GLOBE\nif (v_depth > 1.0) {discard;}\n#endif\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","uniform vec2 u_world;uniform vec2 u_pixel_coord_upper;uniform vec2 u_pixel_coord_lower;uniform vec3 u_scale;uniform vec2 u_fill_translate;attribute vec2 a_pos;varying vec2 v_pos_a;varying vec2 v_pos_b;varying vec2 v_pos;\n#ifdef GLOBE\nvarying float v_depth;\n#endif\n#pragma mapbox: define lowp float opacity\n#pragma mapbox: define lowp vec4 pattern_from\n#pragma mapbox: define lowp vec4 pattern_to\n#pragma mapbox: define lowp float pixel_ratio_from\n#pragma mapbox: define lowp float pixel_ratio_to\nvoid main() {\n#pragma mapbox: initialize lowp float opacity\n#pragma mapbox: initialize mediump vec4 pattern_from\n#pragma mapbox: initialize mediump vec4 pattern_to\n#pragma mapbox: initialize lowp float pixel_ratio_from\n#pragma mapbox: initialize lowp float pixel_ratio_to\nvec2 pattern_tl_a=pattern_from.xy;vec2 pattern_br_a=pattern_from.zw;vec2 pattern_tl_b=pattern_to.xy;vec2 pattern_br_b=pattern_to.zw;float tileRatio=u_scale.x;float fromScale=u_scale.y;float toScale=u_scale.z;gl_Position=projectTile(a_pos+u_fill_translate,a_pos);vec2 display_size_a=(pattern_br_a-pattern_tl_a)/pixel_ratio_from;vec2 display_size_b=(pattern_br_b-pattern_tl_b)/pixel_ratio_to;v_pos_a=get_pattern_pos(u_pixel_coord_upper,u_pixel_coord_lower,fromScale*display_size_a,tileRatio,a_pos);v_pos_b=get_pattern_pos(u_pixel_coord_upper,u_pixel_coord_lower,toScale*display_size_b,tileRatio,a_pos);v_pos=(gl_Position.xy/gl_Position.w+1.0)/2.0*u_world;\n#ifdef GLOBE\nv_depth=gl_Position.z/gl_Position.w;\n#endif\n}"),fillPattern:xt("#ifdef GL_ES\nprecision highp float;\n#endif\nuniform vec2 u_texsize;uniform float u_fade;uniform sampler2D u_image;varying vec2 v_pos_a;varying vec2 v_pos_b;\n#pragma mapbox: define lowp float opacity\n#pragma mapbox: define lowp vec4 pattern_from\n#pragma mapbox: define lowp vec4 pattern_to\nvoid main() {\n#pragma mapbox: initialize lowp float opacity\n#pragma mapbox: initialize mediump vec4 pattern_from\n#pragma mapbox: initialize mediump vec4 pattern_to\nvec2 pattern_tl_a=pattern_from.xy;vec2 pattern_br_a=pattern_from.zw;vec2 pattern_tl_b=pattern_to.xy;vec2 pattern_br_b=pattern_to.zw;vec2 imagecoord=mod(v_pos_a,1.0);vec2 pos=mix(pattern_tl_a/u_texsize,pattern_br_a/u_texsize,imagecoord);vec4 color1=texture2D(u_image,pos);vec2 imagecoord_b=mod(v_pos_b,1.0);vec2 pos2=mix(pattern_tl_b/u_texsize,pattern_br_b/u_texsize,imagecoord_b);vec4 color2=texture2D(u_image,pos2);gl_FragColor=mix(color1,color2,u_fade)*opacity;\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","uniform vec2 u_pixel_coord_upper;uniform vec2 u_pixel_coord_lower;uniform vec3 u_scale;uniform vec2 u_fill_translate;attribute vec2 a_pos;varying vec2 v_pos_a;varying vec2 v_pos_b;\n#pragma mapbox: define lowp float opacity\n#pragma mapbox: define lowp vec4 pattern_from\n#pragma mapbox: define lowp vec4 pattern_to\n#pragma mapbox: define lowp float pixel_ratio_from\n#pragma mapbox: define lowp float pixel_ratio_to\nvoid main() {\n#pragma mapbox: initialize lowp float opacity\n#pragma mapbox: initialize mediump vec4 pattern_from\n#pragma mapbox: initialize mediump vec4 pattern_to\n#pragma mapbox: initialize lowp float pixel_ratio_from\n#pragma mapbox: initialize lowp float pixel_ratio_to\nvec2 pattern_tl_a=pattern_from.xy;vec2 pattern_br_a=pattern_from.zw;vec2 pattern_tl_b=pattern_to.xy;vec2 pattern_br_b=pattern_to.zw;float tileZoomRatio=u_scale.x;float fromScale=u_scale.y;float toScale=u_scale.z;vec2 display_size_a=(pattern_br_a-pattern_tl_a)/pixel_ratio_from;vec2 display_size_b=(pattern_br_b-pattern_tl_b)/pixel_ratio_to;gl_Position=projectTile(a_pos+u_fill_translate,a_pos);v_pos_a=get_pattern_pos(u_pixel_coord_upper,u_pixel_coord_lower,fromScale*display_size_a,tileZoomRatio,a_pos);v_pos_b=get_pattern_pos(u_pixel_coord_upper,u_pixel_coord_lower,toScale*display_size_b,tileZoomRatio,a_pos);}"),fillExtrusion:xt("varying vec4 v_color;void main() {gl_FragColor=v_color;\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","uniform vec3 u_lightcolor;uniform lowp vec3 u_lightpos;uniform lowp vec3 u_lightpos_globe;uniform lowp float u_lightintensity;uniform float u_vertical_gradient;uniform lowp float u_opacity;uniform vec2 u_fill_translate;attribute vec2 a_pos;attribute vec4 a_normal_ed;\n#ifdef TERRAIN3D\nattribute vec2 a_centroid;\n#endif\nvarying vec4 v_color;\n#pragma mapbox: define highp float base\n#pragma mapbox: define highp float height\n#pragma mapbox: define highp vec4 color\nvoid main() {\n#pragma mapbox: initialize highp float base\n#pragma mapbox: initialize highp float height\n#pragma mapbox: initialize highp vec4 color\nvec3 normal=a_normal_ed.xyz;\n#ifdef TERRAIN3D\nfloat height_terrain3d_offset=get_elevation(a_centroid);float base_terrain3d_offset=height_terrain3d_offset-(base > 0.0 ? 0.0 : 10.0);\n#else\nfloat height_terrain3d_offset=0.0;float base_terrain3d_offset=0.0;\n#endif\nbase=max(0.0,base)+base_terrain3d_offset;height=max(0.0,height)+height_terrain3d_offset;float t=mod(normal.x,2.0);float elevation=t > 0.0 ? height : base;vec2 posInTile=a_pos+u_fill_translate;\n#ifdef GLOBE\nvec3 spherePos=projectToSphere(posInTile,a_pos);gl_Position=interpolateProjectionFor3D(posInTile,spherePos,elevation);\n#else\ngl_Position=u_projection_matrix*vec4(posInTile,elevation,1.0);\n#endif\nfloat colorvalue=color.r*0.2126+color.g*0.7152+color.b*0.0722;v_color=vec4(0.0,0.0,0.0,1.0);vec4 ambientlight=vec4(0.03,0.03,0.03,1.0);color+=ambientlight;vec3 normalForLighting=normal/16384.0;float directional=clamp(dot(normalForLighting,u_lightpos),0.0,1.0);\n#ifdef GLOBE\nmat3 rotMatrix=globeGetRotationMatrix(spherePos);normalForLighting=rotMatrix*normalForLighting;directional=mix(directional,clamp(dot(normalForLighting,u_lightpos_globe),0.0,1.0),u_projection_transition);\n#endif\ndirectional=mix((1.0-u_lightintensity),max((1.0-colorvalue+u_lightintensity),1.0),directional);if (normal.y !=0.0) {directional*=((1.0-u_vertical_gradient)+(u_vertical_gradient*clamp((t+base)*pow(height/150.0,0.5),mix(0.7,0.98,1.0-u_lightintensity),1.0)));}v_color.r+=clamp(color.r*directional*u_lightcolor.r,mix(0.0,0.3,1.0-u_lightcolor.r),1.0);v_color.g+=clamp(color.g*directional*u_lightcolor.g,mix(0.0,0.3,1.0-u_lightcolor.g),1.0);v_color.b+=clamp(color.b*directional*u_lightcolor.b,mix(0.0,0.3,1.0-u_lightcolor.b),1.0);v_color*=u_opacity;}"),fillExtrusionPattern:xt("uniform vec2 u_texsize;uniform float u_fade;uniform sampler2D u_image;varying vec2 v_pos_a;varying vec2 v_pos_b;varying vec4 v_lighting;\n#pragma mapbox: define lowp float base\n#pragma mapbox: define lowp float height\n#pragma mapbox: define lowp vec4 pattern_from\n#pragma mapbox: define lowp vec4 pattern_to\n#pragma mapbox: define lowp float pixel_ratio_from\n#pragma mapbox: define lowp float pixel_ratio_to\nvoid main() {\n#pragma mapbox: initialize lowp float base\n#pragma mapbox: initialize lowp float height\n#pragma mapbox: initialize mediump vec4 pattern_from\n#pragma mapbox: initialize mediump vec4 pattern_to\n#pragma mapbox: initialize lowp float pixel_ratio_from\n#pragma mapbox: initialize lowp float pixel_ratio_to\nvec2 pattern_tl_a=pattern_from.xy;vec2 pattern_br_a=pattern_from.zw;vec2 pattern_tl_b=pattern_to.xy;vec2 pattern_br_b=pattern_to.zw;vec2 imagecoord=mod(v_pos_a,1.0);vec2 pos=mix(pattern_tl_a/u_texsize,pattern_br_a/u_texsize,imagecoord);vec4 color1=texture2D(u_image,pos);vec2 imagecoord_b=mod(v_pos_b,1.0);vec2 pos2=mix(pattern_tl_b/u_texsize,pattern_br_b/u_texsize,imagecoord_b);vec4 color2=texture2D(u_image,pos2);vec4 mixedColor=mix(color1,color2,u_fade);gl_FragColor=mixedColor*v_lighting;\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","uniform vec2 u_pixel_coord_upper;uniform vec2 u_pixel_coord_lower;uniform float u_height_factor;uniform vec3 u_scale;uniform float u_vertical_gradient;uniform lowp float u_opacity;uniform vec2 u_fill_translate;uniform vec3 u_lightcolor;uniform lowp vec3 u_lightpos;uniform lowp vec3 u_lightpos_globe;uniform lowp float u_lightintensity;attribute vec2 a_pos;attribute vec4 a_normal_ed;\n#ifdef TERRAIN3D\nattribute vec2 a_centroid;\n#endif\n#ifdef GLOBE\nvarying vec3 v_sphere_pos;\n#endif\nvarying vec2 v_pos_a;varying vec2 v_pos_b;varying vec4 v_lighting;\n#pragma mapbox: define lowp float base\n#pragma mapbox: define lowp float height\n#pragma mapbox: define lowp vec4 pattern_from\n#pragma mapbox: define lowp vec4 pattern_to\n#pragma mapbox: define lowp float pixel_ratio_from\n#pragma mapbox: define lowp float pixel_ratio_to\nvoid main() {\n#pragma mapbox: initialize lowp float base\n#pragma mapbox: initialize lowp float height\n#pragma mapbox: initialize mediump vec4 pattern_from\n#pragma mapbox: initialize mediump vec4 pattern_to\n#pragma mapbox: initialize lowp float pixel_ratio_from\n#pragma mapbox: initialize lowp float pixel_ratio_to\nvec2 pattern_tl_a=pattern_from.xy;vec2 pattern_br_a=pattern_from.zw;vec2 pattern_tl_b=pattern_to.xy;vec2 pattern_br_b=pattern_to.zw;float tileRatio=u_scale.x;float fromScale=u_scale.y;float toScale=u_scale.z;vec3 normal=a_normal_ed.xyz;float edgedistance=a_normal_ed.w;vec2 display_size_a=(pattern_br_a-pattern_tl_a)/pixel_ratio_from;vec2 display_size_b=(pattern_br_b-pattern_tl_b)/pixel_ratio_to;\n#ifdef TERRAIN3D\nfloat height_terrain3d_offset=get_elevation(a_centroid);float base_terrain3d_offset=height_terrain3d_offset-(base > 0.0 ? 0.0 : 10.0);\n#else\nfloat height_terrain3d_offset=0.0;float base_terrain3d_offset=0.0;\n#endif\nbase=max(0.0,base)+base_terrain3d_offset;height=max(0.0,height)+height_terrain3d_offset;float t=mod(normal.x,2.0);float elevation=t > 0.0 ? height : base;vec2 posInTile=a_pos+u_fill_translate;\n#ifdef GLOBE\nvec3 spherePos=projectToSphere(posInTile,a_pos);vec3 elevatedPos=spherePos*(1.0+elevation/GLOBE_RADIUS);v_sphere_pos=elevatedPos;gl_Position=interpolateProjectionFor3D(posInTile,spherePos,elevation);\n#else\ngl_Position=u_projection_matrix*vec4(posInTile,elevation,1.0);\n#endif\nvec2 pos=normal.x==1.0 && normal.y==0.0 && normal.z==16384.0\n? a_pos\n: vec2(edgedistance,elevation*u_height_factor);v_pos_a=get_pattern_pos(u_pixel_coord_upper,u_pixel_coord_lower,fromScale*display_size_a,tileRatio,pos);v_pos_b=get_pattern_pos(u_pixel_coord_upper,u_pixel_coord_lower,toScale*display_size_b,tileRatio,pos);v_lighting=vec4(0.0,0.0,0.0,1.0);float directional=clamp(dot(normal/16383.0,u_lightpos),0.0,1.0);directional=mix((1.0-u_lightintensity),max((0.5+u_lightintensity),1.0),directional);if (normal.y !=0.0) {directional*=((1.0-u_vertical_gradient)+(u_vertical_gradient*clamp((t+base)*pow(height/150.0,0.5),mix(0.7,0.98,1.0-u_lightintensity),1.0)));}v_lighting.rgb+=clamp(directional*u_lightcolor,mix(vec3(0.0),vec3(0.3),1.0-u_lightcolor),vec3(1.0));v_lighting*=u_opacity;}"),hillshadePrepare:xt("#ifdef GL_ES\nprecision highp float;\n#endif\nuniform sampler2D u_image;varying vec2 v_pos;uniform vec2 u_dimension;uniform float u_zoom;uniform vec4 u_unpack;float getElevation(vec2 coord,float bias) {vec4 data=texture2D(u_image,coord)*255.0;data.a=-1.0;return dot(data,u_unpack)/4.0;}void main() {vec2 epsilon=1.0/u_dimension;float a=getElevation(v_pos+vec2(-epsilon.x,-epsilon.y),0.0);float b=getElevation(v_pos+vec2(0,-epsilon.y),0.0);float c=getElevation(v_pos+vec2(epsilon.x,-epsilon.y),0.0);float d=getElevation(v_pos+vec2(-epsilon.x,0),0.0);float e=getElevation(v_pos,0.0);float f=getElevation(v_pos+vec2(epsilon.x,0),0.0);float g=getElevation(v_pos+vec2(-epsilon.x,epsilon.y),0.0);float h=getElevation(v_pos+vec2(0,epsilon.y),0.0);float i=getElevation(v_pos+vec2(epsilon.x,epsilon.y),0.0);float exaggerationFactor=u_zoom < 2.0 ? 0.4 : u_zoom < 4.5 ? 0.35 : 0.3;float exaggeration=u_zoom < 15.0 ? (u_zoom-15.0)*exaggerationFactor : 0.0;vec2 deriv=vec2((c+f+f+i)-(a+d+d+g),(g+h+h+i)-(a+b+b+c))/pow(2.0,exaggeration+(19.2562-u_zoom));gl_FragColor=clamp(vec4(deriv.x/2.0+0.5,deriv.y/2.0+0.5,1.0,1.0),0.0,1.0);\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","uniform mat4 u_matrix;uniform vec2 u_dimension;attribute vec2 a_pos;attribute vec2 a_texture_pos;varying vec2 v_pos;void main() {gl_Position=u_matrix*vec4(a_pos,0,1);highp vec2 epsilon=1.0/u_dimension;float scale=(u_dimension.x-2.0)/u_dimension.x;v_pos=(a_texture_pos/8192.0)*scale+epsilon;}"),hillshade:xt("uniform sampler2D u_image;varying vec2 v_pos;uniform vec2 u_latrange;uniform vec2 u_light;uniform vec4 u_shadow;uniform vec4 u_highlight;uniform vec4 u_accent;\n#define PI 3.141592653589793\nvoid main() {vec4 pixel=texture2D(u_image,v_pos);vec2 deriv=((pixel.rg*2.0)-1.0);float scaleFactor=cos(radians((u_latrange[0]-u_latrange[1])*(1.0-v_pos.y)+u_latrange[1]));float slope=atan(1.25*length(deriv)/scaleFactor);float aspect=deriv.x !=0.0 ? atan(deriv.y,-deriv.x) : PI/2.0*(deriv.y > 0.0 ? 1.0 :-1.0);float intensity=u_light.x;float azimuth=u_light.y+PI;float base=1.875-intensity*1.75;float maxValue=0.5*PI;float scaledSlope=intensity !=0.5 ? ((pow(base,slope)-1.0)/(pow(base,maxValue)-1.0))*maxValue : slope;float accent=cos(scaledSlope);vec4 accent_color=(1.0-accent)*u_accent*clamp(intensity*2.0,0.0,1.0);float shade=abs(mod((aspect+azimuth)/PI+0.5,2.0)-1.0);vec4 shade_color=mix(u_shadow,u_highlight,shade)*sin(scaledSlope)*clamp(intensity*2.0,0.0,1.0);gl_FragColor=accent_color*(1.0-shade_color.a)+shade_color;\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","uniform mat4 u_matrix;attribute vec2 a_pos;varying vec2 v_pos;void main() {gl_Position=projectTile(a_pos,a_pos);v_pos=a_pos/8192.0;if (a_pos.y <-32767.5) {v_pos.y=0.0;}if (a_pos.y > 32766.5) {v_pos.y=1.0;}}"),line:xt("uniform lowp float u_device_pixel_ratio;varying vec2 v_width2;varying vec2 v_normal;varying float v_gamma_scale;\n#ifdef GLOBE\nvarying float v_depth;\n#endif\n#pragma mapbox: define highp vec4 color\n#pragma mapbox: define lowp float blur\n#pragma mapbox: define lowp float opacity\nvoid main() {\n#pragma mapbox: initialize highp vec4 color\n#pragma mapbox: initialize lowp float blur\n#pragma mapbox: initialize lowp float opacity\nfloat dist=length(v_normal)*v_width2.s;float blur2=(blur+1.0/u_device_pixel_ratio)*v_gamma_scale;float alpha=clamp(min(dist-(v_width2.t-blur2),v_width2.s-dist)/blur2,0.0,1.0);gl_FragColor=color*(alpha*opacity);\n#ifdef GLOBE\nif (v_depth > 1.0) {discard;}\n#endif\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","\n#define scale 0.015873016\nattribute vec2 a_pos_normal;attribute vec4 a_data;uniform vec2 u_translation;uniform mediump float u_ratio;uniform vec2 u_units_to_pixels;uniform lowp float u_device_pixel_ratio;varying vec2 v_normal;varying vec2 v_width2;varying float v_gamma_scale;varying highp float v_linesofar;\n#ifdef GLOBE\nvarying float v_depth;\n#endif\n#pragma mapbox: define highp vec4 color\n#pragma mapbox: define lowp float blur\n#pragma mapbox: define lowp float opacity\n#pragma mapbox: define mediump float gapwidth\n#pragma mapbox: define lowp float offset\n#pragma mapbox: define mediump float width\nvoid main() {\n#pragma mapbox: initialize highp vec4 color\n#pragma mapbox: initialize lowp float blur\n#pragma mapbox: initialize lowp float opacity\n#pragma mapbox: initialize mediump float gapwidth\n#pragma mapbox: initialize lowp float offset\n#pragma mapbox: initialize mediump float width\nfloat ANTIALIASING=1.0/u_device_pixel_ratio/2.0;vec2 a_extrude=a_data.xy-128.0;float a_direction=mod(a_data.z,4.0)-1.0;v_linesofar=(floor(a_data.z/4.0)+a_data.w*64.0)*2.0;vec2 pos=floor(a_pos_normal*0.5);mediump vec2 normal=a_pos_normal-2.0*pos;normal.y=normal.y*2.0-1.0;v_normal=normal;gapwidth=gapwidth/2.0;float halfwidth=width/2.0;offset=-1.0*offset;float inset=gapwidth+(gapwidth > 0.0 ? ANTIALIASING : 0.0);float outset=gapwidth+halfwidth*(gapwidth > 0.0 ? 2.0 : 1.0)+(halfwidth==0.0 ? 0.0 : ANTIALIASING);mediump vec2 dist=outset*a_extrude*scale;mediump float u=0.5*a_direction;mediump float t=1.0-abs(u);mediump vec2 offset2=offset*a_extrude*scale*normal.y*mat2(t,-u,u,t);float adjustedThickness=projectLineThickness(pos.y);vec4 projected_no_extrude=projectTile(pos+offset2/u_ratio*adjustedThickness+u_translation);vec4 projected_with_extrude=projectTile(pos+offset2/u_ratio*adjustedThickness+u_translation+dist/u_ratio*adjustedThickness);gl_Position=projected_with_extrude;\n#ifdef GLOBE\nv_depth=gl_Position.z/gl_Position.w;\n#endif\n#ifdef TERRAIN3D\nv_gamma_scale=1.0;\n#else\nfloat extrude_length_without_perspective=length(dist);float extrude_length_with_perspective=length((projected_with_extrude.xy-projected_no_extrude.xy)/projected_with_extrude.w*u_units_to_pixels);v_gamma_scale=extrude_length_without_perspective/extrude_length_with_perspective;\n#endif\nv_width2=vec2(outset,inset);}"),lineGradient:xt("uniform lowp float u_device_pixel_ratio;uniform sampler2D u_image;varying vec2 v_width2;varying vec2 v_normal;varying float v_gamma_scale;varying highp vec2 v_uv;\n#ifdef GLOBE\nvarying float v_depth;\n#endif\n#pragma mapbox: define lowp float blur\n#pragma mapbox: define lowp float opacity\nvoid main() {\n#pragma mapbox: initialize lowp float blur\n#pragma mapbox: initialize lowp float opacity\nfloat dist=length(v_normal)*v_width2.s;float blur2=(blur+1.0/u_device_pixel_ratio)*v_gamma_scale;float alpha=clamp(min(dist-(v_width2.t-blur2),v_width2.s-dist)/blur2,0.0,1.0);vec4 color=texture2D(u_image,v_uv);gl_FragColor=color*(alpha*opacity);\n#ifdef GLOBE\nif (v_depth > 1.0) {discard;}\n#endif\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","\n#define scale 0.015873016\nattribute vec2 a_pos_normal;attribute vec4 a_data;attribute float a_uv_x;attribute float a_split_index;uniform vec2 u_translation;uniform mediump float u_ratio;uniform lowp float u_device_pixel_ratio;uniform vec2 u_units_to_pixels;uniform float u_image_height;varying vec2 v_normal;varying vec2 v_width2;varying float v_gamma_scale;varying highp vec2 v_uv;\n#ifdef GLOBE\nvarying float v_depth;\n#endif\n#pragma mapbox: define lowp float blur\n#pragma mapbox: define lowp float opacity\n#pragma mapbox: define mediump float gapwidth\n#pragma mapbox: define lowp float offset\n#pragma mapbox: define mediump float width\nvoid main() {\n#pragma mapbox: initialize lowp float blur\n#pragma mapbox: initialize lowp float opacity\n#pragma mapbox: initialize mediump float gapwidth\n#pragma mapbox: initialize lowp float offset\n#pragma mapbox: initialize mediump float width\nfloat ANTIALIASING=1.0/u_device_pixel_ratio/2.0;vec2 a_extrude=a_data.xy-128.0;float a_direction=mod(a_data.z,4.0)-1.0;highp float texel_height=1.0/u_image_height;highp float half_texel_height=0.5*texel_height;v_uv=vec2(a_uv_x,a_split_index*texel_height-half_texel_height);vec2 pos=floor(a_pos_normal*0.5);mediump vec2 normal=a_pos_normal-2.0*pos;normal.y=normal.y*2.0-1.0;v_normal=normal;gapwidth=gapwidth/2.0;float halfwidth=width/2.0;offset=-1.0*offset;float inset=gapwidth+(gapwidth > 0.0 ? ANTIALIASING : 0.0);float outset=gapwidth+halfwidth*(gapwidth > 0.0 ? 2.0 : 1.0)+(halfwidth==0.0 ? 0.0 : ANTIALIASING);mediump vec2 dist=outset*a_extrude*scale;mediump float u=0.5*a_direction;mediump float t=1.0-abs(u);mediump vec2 offset2=offset*a_extrude*scale*normal.y*mat2(t,-u,u,t);float adjustedThickness=projectLineThickness(pos.y);vec4 projected_no_extrude=projectTile(pos+offset2/u_ratio*adjustedThickness+u_translation);vec4 projected_with_extrude=projectTile(pos+offset2/u_ratio*adjustedThickness+u_translation+dist/u_ratio*adjustedThickness);gl_Position=projected_with_extrude;\n#ifdef GLOBE\nv_depth=gl_Position.z/gl_Position.w;\n#endif\n#ifdef TERRAIN3D\nv_gamma_scale=1.0;\n#else\nfloat extrude_length_without_perspective=length(dist);float extrude_length_with_perspective=length((projected_with_extrude.xy-projected_no_extrude.xy)/projected_with_extrude.w*u_units_to_pixels);v_gamma_scale=extrude_length_without_perspective/extrude_length_with_perspective;\n#endif\nv_width2=vec2(outset,inset);}"),linePattern:xt("#ifdef GL_ES\nprecision highp float;\n#endif\nuniform lowp float u_device_pixel_ratio;uniform vec2 u_texsize;uniform float u_fade;uniform mediump vec3 u_scale;uniform sampler2D u_image;varying vec2 v_normal;varying vec2 v_width2;varying float v_linesofar;varying float v_gamma_scale;varying float v_width;\n#ifdef GLOBE\nvarying float v_depth;\n#endif\n#pragma mapbox: define lowp vec4 pattern_from\n#pragma mapbox: define lowp vec4 pattern_to\n#pragma mapbox: define lowp float pixel_ratio_from\n#pragma mapbox: define lowp float pixel_ratio_to\n#pragma mapbox: define lowp float blur\n#pragma mapbox: define lowp float opacity\nvoid main() {\n#pragma mapbox: initialize mediump vec4 pattern_from\n#pragma mapbox: initialize mediump vec4 pattern_to\n#pragma mapbox: initialize lowp float pixel_ratio_from\n#pragma mapbox: initialize lowp float pixel_ratio_to\n#pragma mapbox: initialize lowp float blur\n#pragma mapbox: initialize lowp float opacity\nvec2 pattern_tl_a=pattern_from.xy;vec2 pattern_br_a=pattern_from.zw;vec2 pattern_tl_b=pattern_to.xy;vec2 pattern_br_b=pattern_to.zw;float tileZoomRatio=u_scale.x;float fromScale=u_scale.y;float toScale=u_scale.z;vec2 display_size_a=(pattern_br_a-pattern_tl_a)/pixel_ratio_from;vec2 display_size_b=(pattern_br_b-pattern_tl_b)/pixel_ratio_to;vec2 pattern_size_a=vec2(display_size_a.x*fromScale/tileZoomRatio,display_size_a.y);vec2 pattern_size_b=vec2(display_size_b.x*toScale/tileZoomRatio,display_size_b.y);float aspect_a=display_size_a.y/v_width;float aspect_b=display_size_b.y/v_width;float dist=length(v_normal)*v_width2.s;float blur2=(blur+1.0/u_device_pixel_ratio)*v_gamma_scale;float alpha=clamp(min(dist-(v_width2.t-blur2),v_width2.s-dist)/blur2,0.0,1.0);float x_a=mod(v_linesofar/pattern_size_a.x*aspect_a,1.0);float x_b=mod(v_linesofar/pattern_size_b.x*aspect_b,1.0);float y=0.5*v_normal.y+0.5;vec2 texel_size=1.0/u_texsize;vec2 pos_a=mix(pattern_tl_a*texel_size-texel_size,pattern_br_a*texel_size+texel_size,vec2(x_a,y));vec2 pos_b=mix(pattern_tl_b*texel_size-texel_size,pattern_br_b*texel_size+texel_size,vec2(x_b,y));vec4 color=mix(texture2D(u_image,pos_a),texture2D(u_image,pos_b),u_fade);gl_FragColor=color*alpha*opacity;\n#ifdef GLOBE\nif (v_depth > 1.0) {discard;}\n#endif\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","\n#define scale 0.015873016\n#define LINE_DISTANCE_SCALE 2.0\nattribute vec2 a_pos_normal;attribute vec4 a_data;uniform vec2 u_translation;uniform vec2 u_units_to_pixels;uniform mediump float u_ratio;uniform lowp float u_device_pixel_ratio;varying vec2 v_normal;varying vec2 v_width2;varying float v_linesofar;varying float v_gamma_scale;varying float v_width;\n#ifdef GLOBE\nvarying float v_depth;\n#endif\n#pragma mapbox: define lowp float blur\n#pragma mapbox: define lowp float opacity\n#pragma mapbox: define lowp float offset\n#pragma mapbox: define mediump float gapwidth\n#pragma mapbox: define mediump float width\n#pragma mapbox: define lowp float floorwidth\n#pragma mapbox: define lowp vec4 pattern_from\n#pragma mapbox: define lowp vec4 pattern_to\n#pragma mapbox: define lowp float pixel_ratio_from\n#pragma mapbox: define lowp float pixel_ratio_to\nvoid main() {\n#pragma mapbox: initialize lowp float blur\n#pragma mapbox: initialize lowp float opacity\n#pragma mapbox: initialize lowp float offset\n#pragma mapbox: initialize mediump float gapwidth\n#pragma mapbox: initialize mediump float width\n#pragma mapbox: initialize lowp float floorwidth\n#pragma mapbox: initialize mediump vec4 pattern_from\n#pragma mapbox: initialize mediump vec4 pattern_to\n#pragma mapbox: initialize lowp float pixel_ratio_from\n#pragma mapbox: initialize lowp float pixel_ratio_to\nfloat ANTIALIASING=1.0/u_device_pixel_ratio/2.0;vec2 a_extrude=a_data.xy-128.0;float a_direction=mod(a_data.z,4.0)-1.0;float a_linesofar=(floor(a_data.z/4.0)+a_data.w*64.0)*LINE_DISTANCE_SCALE;vec2 pos=floor(a_pos_normal*0.5);mediump vec2 normal=a_pos_normal-2.0*pos;normal.y=normal.y*2.0-1.0;v_normal=normal;gapwidth=gapwidth/2.0;float halfwidth=width/2.0;offset=-1.0*offset;float inset=gapwidth+(gapwidth > 0.0 ? ANTIALIASING : 0.0);float outset=gapwidth+halfwidth*(gapwidth > 0.0 ? 2.0 : 1.0)+(halfwidth==0.0 ? 0.0 : ANTIALIASING);mediump vec2 dist=outset*a_extrude*scale;mediump float u=0.5*a_direction;mediump float t=1.0-abs(u);mediump vec2 offset2=offset*a_extrude*scale*normal.y*mat2(t,-u,u,t);float adjustedThickness=projectLineThickness(pos.y);vec4 projected_no_extrude=projectTile(pos+offset2/u_ratio*adjustedThickness+u_translation);vec4 projected_with_extrude=projectTile(pos+offset2/u_ratio*adjustedThickness+u_translation+dist/u_ratio*adjustedThickness);gl_Position=projected_with_extrude;\n#ifdef GLOBE\nv_depth=gl_Position.z/gl_Position.w;\n#endif\n#ifdef TERRAIN3D\nv_gamma_scale=1.0;\n#else\nfloat extrude_length_without_perspective=length(dist);float extrude_length_with_perspective=length((projected_with_extrude.xy-projected_no_extrude.xy)/projected_with_extrude.w*u_units_to_pixels);v_gamma_scale=extrude_length_without_perspective/extrude_length_with_perspective;\n#endif\nv_linesofar=a_linesofar;v_width2=vec2(outset,inset);v_width=floorwidth;}"),lineSDF:xt("uniform lowp float u_device_pixel_ratio;uniform sampler2D u_image;uniform float u_sdfgamma;uniform float u_mix;varying vec2 v_normal;varying vec2 v_width2;varying vec2 v_tex_a;varying vec2 v_tex_b;varying float v_gamma_scale;\n#ifdef GLOBE\nvarying float v_depth;\n#endif\n#pragma mapbox: define highp vec4 color\n#pragma mapbox: define lowp float blur\n#pragma mapbox: define lowp float opacity\n#pragma mapbox: define mediump float width\n#pragma mapbox: define lowp float floorwidth\nvoid main() {\n#pragma mapbox: initialize highp vec4 color\n#pragma mapbox: initialize lowp float blur\n#pragma mapbox: initialize lowp float opacity\n#pragma mapbox: initialize mediump float width\n#pragma mapbox: initialize lowp float floorwidth\nfloat dist=length(v_normal)*v_width2.s;float blur2=(blur+1.0/u_device_pixel_ratio)*v_gamma_scale;float alpha=clamp(min(dist-(v_width2.t-blur2),v_width2.s-dist)/blur2,0.0,1.0);float sdfdist_a=texture2D(u_image,v_tex_a).a;float sdfdist_b=texture2D(u_image,v_tex_b).a;float sdfdist=mix(sdfdist_a,sdfdist_b,u_mix);alpha*=smoothstep(0.5-u_sdfgamma/floorwidth,0.5+u_sdfgamma/floorwidth,sdfdist);gl_FragColor=color*(alpha*opacity);\n#ifdef GLOBE\nif (v_depth > 1.0) {discard;}\n#endif\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","\n#define scale 0.015873016\n#define LINE_DISTANCE_SCALE 2.0\nattribute vec2 a_pos_normal;attribute vec4 a_data;uniform vec2 u_translation;uniform mediump float u_ratio;uniform lowp float u_device_pixel_ratio;uniform vec2 u_patternscale_a;uniform float u_tex_y_a;uniform vec2 u_patternscale_b;uniform float u_tex_y_b;uniform vec2 u_units_to_pixels;varying vec2 v_normal;varying vec2 v_width2;varying vec2 v_tex_a;varying vec2 v_tex_b;varying float v_gamma_scale;\n#ifdef GLOBE\nvarying float v_depth;\n#endif\n#pragma mapbox: define highp vec4 color\n#pragma mapbox: define lowp float blur\n#pragma mapbox: define lowp float opacity\n#pragma mapbox: define mediump float gapwidth\n#pragma mapbox: define lowp float offset\n#pragma mapbox: define mediump float width\n#pragma mapbox: define lowp float floorwidth\nvoid main() {\n#pragma mapbox: initialize highp vec4 color\n#pragma mapbox: initialize lowp float blur\n#pragma mapbox: initialize lowp float opacity\n#pragma mapbox: initialize mediump float gapwidth\n#pragma mapbox: initialize lowp float offset\n#pragma mapbox: initialize mediump float width\n#pragma mapbox: initialize lowp float floorwidth\nfloat ANTIALIASING=1.0/u_device_pixel_ratio/2.0;vec2 a_extrude=a_data.xy-128.0;float a_direction=mod(a_data.z,4.0)-1.0;float a_linesofar=(floor(a_data.z/4.0)+a_data.w*64.0)*LINE_DISTANCE_SCALE;vec2 pos=floor(a_pos_normal*0.5);mediump vec2 normal=a_pos_normal-2.0*pos;normal.y=normal.y*2.0-1.0;v_normal=normal;gapwidth=gapwidth/2.0;float halfwidth=width/2.0;offset=-1.0*offset;float inset=gapwidth+(gapwidth > 0.0 ? ANTIALIASING : 0.0);float outset=gapwidth+halfwidth*(gapwidth > 0.0 ? 2.0 : 1.0)+(halfwidth==0.0 ? 0.0 : ANTIALIASING);mediump vec2 dist=outset*a_extrude*scale;mediump float u=0.5*a_direction;mediump float t=1.0-abs(u);mediump vec2 offset2=offset*a_extrude*scale*normal.y*mat2(t,-u,u,t);float adjustedThickness=projectLineThickness(pos.y);vec4 projected_no_extrude=projectTile(pos+offset2/u_ratio*adjustedThickness+u_translation);vec4 projected_with_extrude=projectTile(pos+offset2/u_ratio*adjustedThickness+u_translation+dist/u_ratio*adjustedThickness);gl_Position=projected_with_extrude;\n#ifdef GLOBE\nv_depth=gl_Position.z/gl_Position.w;\n#endif\n#ifdef TERRAIN3D\nv_gamma_scale=1.0;\n#else\nfloat extrude_length_without_perspective=length(dist);float extrude_length_with_perspective=length((projected_with_extrude.xy-projected_no_extrude.xy)/projected_with_extrude.w*u_units_to_pixels);v_gamma_scale=extrude_length_without_perspective/extrude_length_with_perspective;\n#endif\nv_tex_a=vec2(a_linesofar*u_patternscale_a.x/floorwidth,normal.y*u_patternscale_a.y+u_tex_y_a);v_tex_b=vec2(a_linesofar*u_patternscale_b.x/floorwidth,normal.y*u_patternscale_b.y+u_tex_y_b);v_width2=vec2(outset,inset);}"),raster:xt("uniform float u_fade_t;uniform float u_opacity;uniform sampler2D u_image0;uniform sampler2D u_image1;varying vec2 v_pos0;varying vec2 v_pos1;uniform float u_brightness_low;uniform float u_brightness_high;uniform float u_saturation_factor;uniform float u_contrast_factor;uniform vec3 u_spin_weights;void main() {vec4 color0=texture2D(u_image0,v_pos0);vec4 color1=texture2D(u_image1,v_pos1);if (color0.a > 0.0) {color0.rgb=color0.rgb/color0.a;}if (color1.a > 0.0) {color1.rgb=color1.rgb/color1.a;}vec4 color=mix(color0,color1,u_fade_t);color.a*=u_opacity;vec3 rgb=color.rgb;rgb=vec3(dot(rgb,u_spin_weights.xyz),dot(rgb,u_spin_weights.zxy),dot(rgb,u_spin_weights.yzx));float average=(color.r+color.g+color.b)/3.0;rgb+=(average-rgb)*u_saturation_factor;rgb=(rgb-0.5)*u_contrast_factor+0.5;vec3 u_high_vec=vec3(u_brightness_low,u_brightness_low,u_brightness_low);vec3 u_low_vec=vec3(u_brightness_high,u_brightness_high,u_brightness_high);gl_FragColor=vec4(mix(u_high_vec,u_low_vec,rgb)*color.a,color.a);\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","uniform vec2 u_tl_parent;uniform float u_scale_parent;uniform float u_buffer_scale;uniform vec4 u_coords_top;uniform vec4 u_coords_bottom;attribute vec2 a_pos;varying vec2 v_pos0;varying vec2 v_pos1;void main() {vec2 fractionalPos=a_pos/8192.0;vec2 position=mix(mix(u_coords_top.xy,u_coords_top.zw,fractionalPos.x),mix(u_coords_bottom.xy,u_coords_bottom.zw,fractionalPos.x),fractionalPos.y);gl_Position=projectTile(position,position);v_pos0=((fractionalPos-0.5)/u_buffer_scale)+0.5;\n#ifdef GLOBE\nif (a_pos.y <-32767.5) {v_pos0.y=0.0;}if (a_pos.y > 32766.5) {v_pos0.y=1.0;}\n#endif\nv_pos1=(v_pos0*u_scale_parent)+u_tl_parent;}"),symbolIcon:xt("uniform sampler2D u_texture;varying vec2 v_tex;varying float v_fade_opacity;\n#pragma mapbox: define lowp float opacity\nvoid main() {\n#pragma mapbox: initialize lowp float opacity\nlowp float alpha=opacity*v_fade_opacity;gl_FragColor=texture2D(u_texture,v_tex)*alpha;\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","attribute vec4 a_pos_offset;attribute vec4 a_data;attribute vec4 a_pixeloffset;attribute vec3 a_projected_pos;attribute float a_fade_opacity;uniform bool u_is_size_zoom_constant;uniform bool u_is_size_feature_constant;uniform highp float u_size_t;uniform highp float u_size;uniform highp float u_camera_to_center_distance;uniform highp float u_pitch;uniform bool u_rotate_symbol;uniform highp float u_aspect_ratio;uniform float u_fade_change;uniform mat4 u_label_plane_matrix;uniform mat4 u_coord_matrix;uniform bool u_is_text;uniform bool u_pitch_with_map;uniform vec2 u_texsize;uniform bool u_is_along_line;uniform bool u_is_variable_anchor;uniform vec2 u_translation;uniform float u_pitched_scale;varying vec2 v_tex;varying float v_fade_opacity;\n#pragma mapbox: define lowp float opacity\nvoid main() {\n#pragma mapbox: initialize lowp float opacity\nvec2 a_pos=a_pos_offset.xy;vec2 a_offset=a_pos_offset.zw;vec2 a_tex=a_data.xy;vec2 a_size=a_data.zw;float a_size_min=floor(a_size[0]*0.5);vec2 a_pxoffset=a_pixeloffset.xy;vec2 a_minFontScale=a_pixeloffset.zw/256.0;float ele=get_elevation(a_pos);highp float segment_angle=-a_projected_pos[2];float size;if (!u_is_size_zoom_constant && !u_is_size_feature_constant) {size=mix(a_size_min,a_size[1],u_size_t)/128.0;} else if (u_is_size_zoom_constant && !u_is_size_feature_constant) {size=a_size_min/128.0;} else {size=u_size;}vec2 translated_a_pos=a_pos+u_translation;vec4 projectedPoint=projectTileWithElevation(translated_a_pos,ele);highp float camera_to_anchor_distance=projectedPoint.w;highp float distance_ratio=u_pitch_with_map ?\ncamera_to_anchor_distance/u_camera_to_center_distance :\nu_camera_to_center_distance/camera_to_anchor_distance;highp float perspective_ratio=clamp(0.5+0.5*distance_ratio,0.0,4.0);size*=perspective_ratio;float fontScale=u_is_text ? size/24.0 : size;highp float symbol_rotation=0.0;if (u_rotate_symbol) {vec4 offsetProjectedPoint=projectTileWithElevation(translated_a_pos+vec2(1,0),ele);vec2 a=projectedPoint.xy/projectedPoint.w;vec2 b=offsetProjectedPoint.xy/offsetProjectedPoint.w;symbol_rotation=atan((b.y-a.y)/u_aspect_ratio,b.x-a.x);}highp float angle_sin=sin(segment_angle+symbol_rotation);highp float angle_cos=cos(segment_angle+symbol_rotation);mat2 rotation_matrix=mat2(angle_cos,-1.0*angle_sin,angle_sin,angle_cos);vec4 projected_pos;if (u_is_along_line || u_is_variable_anchor) {projected_pos=vec4(a_projected_pos.xy,ele,1.0);} else if (u_pitch_with_map) {projected_pos=u_label_plane_matrix*vec4(a_projected_pos.xy+u_translation,ele,1.0);} else {projected_pos=u_label_plane_matrix*projectTileWithElevation(a_projected_pos.xy+u_translation,ele);}float z=float(u_pitch_with_map)*projected_pos.z/projected_pos.w;float projectionScaling=1.0;\n#ifdef GLOBE\nif(u_pitch_with_map && !u_is_along_line) {float anchor_pos_tile_y=(u_coord_matrix*vec4(projected_pos.xy/projected_pos.w,z,1.0)).y;projectionScaling=mix(projectionScaling,1.0/circumferenceRatioAtTileY(anchor_pos_tile_y)*u_pitched_scale,u_projection_transition);}\n#endif\nvec4 finalPos=u_coord_matrix*vec4(projected_pos.xy/projected_pos.w+rotation_matrix*(a_offset/32.0*max(a_minFontScale,fontScale)+a_pxoffset/16.0)*projectionScaling,z,1.0);if(u_pitch_with_map) {finalPos=projectTileWithElevation(finalPos.xy,finalPos.z);}gl_Position=finalPos;v_tex=a_tex/u_texsize;vec2 fade_opacity=unpack_opacity(a_fade_opacity);float fade_change=fade_opacity[1] > 0.5 ? u_fade_change :-u_fade_change;float visibility=calculate_visibility(projectedPoint);v_fade_opacity=max(0.0,min(visibility,fade_opacity[0]+fade_change));}"),symbolSDF:xt("#define SDF_PX 8.0\nuniform bool u_is_halo;uniform sampler2D u_texture;uniform highp float u_gamma_scale;uniform lowp float u_device_pixel_ratio;uniform bool u_is_text;varying vec2 v_data0;varying vec3 v_data1;\n#pragma mapbox: define highp vec4 fill_color\n#pragma mapbox: define highp vec4 halo_color\n#pragma mapbox: define lowp float opacity\n#pragma mapbox: define lowp float halo_width\n#pragma mapbox: define lowp float halo_blur\nvoid main() {\n#pragma mapbox: initialize highp vec4 fill_color\n#pragma mapbox: initialize highp vec4 halo_color\n#pragma mapbox: initialize lowp float opacity\n#pragma mapbox: initialize lowp float halo_width\n#pragma mapbox: initialize lowp float halo_blur\nfloat EDGE_GAMMA=0.105/u_device_pixel_ratio;vec2 tex=v_data0.xy;float gamma_scale=v_data1.x;float size=v_data1.y;float fade_opacity=v_data1[2];float fontScale=u_is_text ? size/24.0 : size;lowp vec4 color=fill_color;highp float gamma=EDGE_GAMMA/(fontScale*u_gamma_scale);lowp float inner_edge=(256.0-64.0)/256.0;if (u_is_halo) {color=halo_color;gamma=(halo_blur*1.19/SDF_PX+EDGE_GAMMA)/(fontScale*u_gamma_scale);inner_edge=inner_edge+gamma*gamma_scale;}lowp float dist=texture2D(u_texture,tex).a;highp float gamma_scaled=gamma*gamma_scale;highp float alpha=smoothstep(inner_edge-gamma_scaled,inner_edge+gamma_scaled,dist);if (u_is_halo) {lowp float halo_edge=(6.0-halo_width/fontScale)/SDF_PX;alpha=min(smoothstep(halo_edge-gamma_scaled,halo_edge+gamma_scaled,dist),1.0-alpha);}gl_FragColor=color*(alpha*opacity*fade_opacity);\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","attribute vec4 a_pos_offset;attribute vec4 a_data;attribute vec4 a_pixeloffset;attribute vec3 a_projected_pos;attribute float a_fade_opacity;uniform bool u_is_size_zoom_constant;uniform bool u_is_size_feature_constant;uniform highp float u_size_t;uniform highp float u_size;uniform mat4 u_label_plane_matrix;uniform mat4 u_coord_matrix;uniform bool u_is_text;uniform bool u_pitch_with_map;uniform bool u_is_along_line;uniform bool u_is_variable_anchor;uniform highp float u_pitch;uniform bool u_rotate_symbol;uniform highp float u_aspect_ratio;uniform highp float u_camera_to_center_distance;uniform float u_fade_change;uniform vec2 u_texsize;uniform vec2 u_translation;uniform float u_pitched_scale;varying vec2 v_data0;varying vec3 v_data1;\n#pragma mapbox: define highp vec4 fill_color\n#pragma mapbox: define highp vec4 halo_color\n#pragma mapbox: define lowp float opacity\n#pragma mapbox: define lowp float halo_width\n#pragma mapbox: define lowp float halo_blur\nvoid main() {\n#pragma mapbox: initialize highp vec4 fill_color\n#pragma mapbox: initialize highp vec4 halo_color\n#pragma mapbox: initialize lowp float opacity\n#pragma mapbox: initialize lowp float halo_width\n#pragma mapbox: initialize lowp float halo_blur\nvec2 a_pos=a_pos_offset.xy;vec2 a_offset=a_pos_offset.zw;vec2 a_tex=a_data.xy;vec2 a_size=a_data.zw;float a_size_min=floor(a_size[0]*0.5);vec2 a_pxoffset=a_pixeloffset.xy;float ele=get_elevation(a_pos);highp float segment_angle=-a_projected_pos[2];float size;if (!u_is_size_zoom_constant && !u_is_size_feature_constant) {size=mix(a_size_min,a_size[1],u_size_t)/128.0;} else if (u_is_size_zoom_constant && !u_is_size_feature_constant) {size=a_size_min/128.0;} else {size=u_size;}vec2 translated_a_pos=a_pos+u_translation;vec4 projectedPoint=projectTileWithElevation(translated_a_pos,ele);highp float camera_to_anchor_distance=projectedPoint.w;highp float distance_ratio=u_pitch_with_map ?\ncamera_to_anchor_distance/u_camera_to_center_distance :\nu_camera_to_center_distance/camera_to_anchor_distance;highp float perspective_ratio=clamp(0.5+0.5*distance_ratio,0.0,4.0);size*=perspective_ratio;float fontScale=u_is_text ? size/24.0 : size;highp float symbol_rotation=0.0;if (u_rotate_symbol) {vec4 offsetProjectedPoint=projectTileWithElevation(translated_a_pos+vec2(1,0),ele);vec2 a=projectedPoint.xy/projectedPoint.w;vec2 b=offsetProjectedPoint.xy/offsetProjectedPoint.w;symbol_rotation=atan((b.y-a.y)/u_aspect_ratio,b.x-a.x);}highp float angle_sin=sin(segment_angle+symbol_rotation);highp float angle_cos=cos(segment_angle+symbol_rotation);mat2 rotation_matrix=mat2(angle_cos,-1.0*angle_sin,angle_sin,angle_cos);vec4 projected_pos;if (u_is_along_line || u_is_variable_anchor) {projected_pos=vec4(a_projected_pos.xy,ele,1.0);} else if (u_pitch_with_map) {projected_pos=u_label_plane_matrix*vec4(a_projected_pos.xy+u_translation,ele,1.0);} else {projected_pos=u_label_plane_matrix*projectTileWithElevation(a_projected_pos.xy+u_translation,ele);}float z=float(u_pitch_with_map)*projected_pos.z/projected_pos.w;float projectionScaling=1.0;\n#ifdef GLOBE\nif(u_pitch_with_map) {float anchor_pos_tile_y=(u_coord_matrix*vec4(projected_pos.xy/projected_pos.w,z,1.0)).y;projectionScaling=mix(projectionScaling,1.0/circumferenceRatioAtTileY(anchor_pos_tile_y)*u_pitched_scale,u_projection_transition);}\n#endif\nvec4 finalPos=u_coord_matrix*vec4(projected_pos.xy/projected_pos.w+rotation_matrix*(a_offset/32.0*fontScale+a_pxoffset)*projectionScaling,z,1.0);if(u_pitch_with_map) {finalPos=projectTileWithElevation(finalPos.xy,finalPos.z);}float gamma_scale=finalPos.w;gl_Position=finalPos;vec2 fade_opacity=unpack_opacity(a_fade_opacity);float visibility=calculate_visibility(projectedPoint);float fade_change=fade_opacity[1] > 0.5 ? u_fade_change :-u_fade_change;float interpolated_fade_opacity=max(0.0,min(visibility,fade_opacity[0]+fade_change));v_data0=a_tex/u_texsize;v_data1=vec3(gamma_scale,size,interpolated_fade_opacity);}"),symbolTextAndIcon:xt("#define SDF_PX 8.0\n#define SDF 1.0\n#define ICON 0.0\nuniform bool u_is_halo;uniform sampler2D u_texture;uniform sampler2D u_texture_icon;uniform highp float u_gamma_scale;uniform lowp float u_device_pixel_ratio;varying vec4 v_data0;varying vec4 v_data1;\n#pragma mapbox: define highp vec4 fill_color\n#pragma mapbox: define highp vec4 halo_color\n#pragma mapbox: define lowp float opacity\n#pragma mapbox: define lowp float halo_width\n#pragma mapbox: define lowp float halo_blur\nvoid main() {\n#pragma mapbox: initialize highp vec4 fill_color\n#pragma mapbox: initialize highp vec4 halo_color\n#pragma mapbox: initialize lowp float opacity\n#pragma mapbox: initialize lowp float halo_width\n#pragma mapbox: initialize lowp float halo_blur\nfloat fade_opacity=v_data1[2];if (v_data1.w==ICON) {vec2 tex_icon=v_data0.zw;lowp float alpha=opacity*fade_opacity;gl_FragColor=texture2D(u_texture_icon,tex_icon)*alpha;\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\nreturn;}vec2 tex=v_data0.xy;float EDGE_GAMMA=0.105/u_device_pixel_ratio;float gamma_scale=v_data1.x;float size=v_data1.y;float fontScale=size/24.0;lowp vec4 color=fill_color;highp float gamma=EDGE_GAMMA/(fontScale*u_gamma_scale);lowp float buff=(256.0-64.0)/256.0;if (u_is_halo) {color=halo_color;gamma=(halo_blur*1.19/SDF_PX+EDGE_GAMMA)/(fontScale*u_gamma_scale);buff=(6.0-halo_width/fontScale)/SDF_PX;}lowp float dist=texture2D(u_texture,tex).a;highp float gamma_scaled=gamma*gamma_scale;highp float alpha=smoothstep(buff-gamma_scaled,buff+gamma_scaled,dist);gl_FragColor=color*(alpha*opacity*fade_opacity);\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","attribute vec4 a_pos_offset;attribute vec4 a_data;attribute vec3 a_projected_pos;attribute float a_fade_opacity;uniform bool u_is_size_zoom_constant;uniform bool u_is_size_feature_constant;uniform highp float u_size_t;uniform highp float u_size;uniform mat4 u_label_plane_matrix;uniform mat4 u_coord_matrix;uniform bool u_is_text;uniform bool u_pitch_with_map;uniform highp float u_pitch;uniform bool u_rotate_symbol;uniform highp float u_aspect_ratio;uniform highp float u_camera_to_center_distance;uniform float u_fade_change;uniform vec2 u_texsize;uniform vec2 u_texsize_icon;uniform bool u_is_along_line;uniform bool u_is_variable_anchor;uniform vec2 u_translation;uniform float u_pitched_scale;varying vec4 v_data0;varying vec4 v_data1;\n#pragma mapbox: define highp vec4 fill_color\n#pragma mapbox: define highp vec4 halo_color\n#pragma mapbox: define lowp float opacity\n#pragma mapbox: define lowp float halo_width\n#pragma mapbox: define lowp float halo_blur\nvoid main() {\n#pragma mapbox: initialize highp vec4 fill_color\n#pragma mapbox: initialize highp vec4 halo_color\n#pragma mapbox: initialize lowp float opacity\n#pragma mapbox: initialize lowp float halo_width\n#pragma mapbox: initialize lowp float halo_blur\nvec2 a_pos=a_pos_offset.xy;vec2 a_offset=a_pos_offset.zw;vec2 a_tex=a_data.xy;vec2 a_size=a_data.zw;float a_size_min=floor(a_size[0]*0.5);float is_sdf=a_size[0]-2.0*a_size_min;float ele=get_elevation(a_pos);highp float segment_angle=-a_projected_pos[2];float size;if (!u_is_size_zoom_constant && !u_is_size_feature_constant) {size=mix(a_size_min,a_size[1],u_size_t)/128.0;} else if (u_is_size_zoom_constant && !u_is_size_feature_constant) {size=a_size_min/128.0;} else {size=u_size;}vec2 translated_a_pos=a_pos+u_translation;vec4 projectedPoint=projectTileWithElevation(translated_a_pos,ele);highp float camera_to_anchor_distance=projectedPoint.w;highp float distance_ratio=u_pitch_with_map ?\ncamera_to_anchor_distance/u_camera_to_center_distance :\nu_camera_to_center_distance/camera_to_anchor_distance;highp float perspective_ratio=clamp(0.5+0.5*distance_ratio,0.0,4.0);size*=perspective_ratio;float fontScale=size/24.0;highp float symbol_rotation=0.0;if (u_rotate_symbol) {vec4 offsetProjectedPoint=projectTileWithElevation(translated_a_pos+vec2(1,0),ele);vec2 a=projectedPoint.xy/projectedPoint.w;vec2 b=offsetProjectedPoint.xy/offsetProjectedPoint.w;symbol_rotation=atan((b.y-a.y)/u_aspect_ratio,b.x-a.x);}highp float angle_sin=sin(segment_angle+symbol_rotation);highp float angle_cos=cos(segment_angle+symbol_rotation);mat2 rotation_matrix=mat2(angle_cos,-1.0*angle_sin,angle_sin,angle_cos);vec4 projected_pos;if (u_is_along_line || u_is_variable_anchor) {projected_pos=vec4(a_projected_pos.xy,ele,1.0);} else if (u_pitch_with_map) {projected_pos=u_label_plane_matrix*vec4(a_projected_pos.xy+u_translation,ele,1.0);} else {projected_pos=u_label_plane_matrix*projectTileWithElevation(a_projected_pos.xy+u_translation,ele);}float z=float(u_pitch_with_map)*projected_pos.z/projected_pos.w;float projectionScaling=1.0;\n#ifdef GLOBE\nif(u_pitch_with_map && !u_is_along_line) {float anchor_pos_tile_y=(u_coord_matrix*vec4(projected_pos.xy/projected_pos.w,z,1.0)).y;projectionScaling=mix(projectionScaling,1.0/circumferenceRatioAtTileY(anchor_pos_tile_y)*u_pitched_scale,u_projection_transition);}\n#endif\nvec4 finalPos=u_coord_matrix*vec4(projected_pos.xy/projected_pos.w+rotation_matrix*(a_offset/32.0*fontScale)*projectionScaling,z,1.0);if(u_pitch_with_map) {finalPos=projectTileWithElevation(finalPos.xy,finalPos.z);}float gamma_scale=finalPos.w;gl_Position=finalPos;vec2 fade_opacity=unpack_opacity(a_fade_opacity);float visibility=calculate_visibility(projectedPoint);float fade_change=fade_opacity[1] > 0.5 ? u_fade_change :-u_fade_change;float interpolated_fade_opacity=max(0.0,min(visibility,fade_opacity[0]+fade_change));v_data0.xy=a_tex/u_texsize;v_data0.zw=a_tex/u_texsize_icon;v_data1=vec4(gamma_scale,size,interpolated_fade_opacity,is_sdf);}"),terrain:xt("uniform sampler2D u_texture;uniform vec4 u_fog_color;uniform vec4 u_horizon_color;uniform float u_fog_ground_blend;uniform float u_fog_ground_blend_opacity;uniform float u_horizon_fog_blend;uniform bool u_is_globe_mode;varying vec2 v_texture_pos;varying float v_fog_depth;const float gamma=2.2;vec4 gammaToLinear(vec4 color) {return pow(color,vec4(gamma));}vec4 linearToGamma(vec4 color) {return pow(color,vec4(1.0/gamma));}void main() {vec4 surface_color=texture2D(u_texture,vec2(v_texture_pos.x,1.0-v_texture_pos.y));if (!u_is_globe_mode && v_fog_depth > u_fog_ground_blend) {vec4 surface_color_linear=gammaToLinear(surface_color);float blend_color=smoothstep(0.0,1.0,max((v_fog_depth-u_horizon_fog_blend)/(1.0-u_horizon_fog_blend),0.0));vec4 fog_horizon_color_linear=mix(gammaToLinear(u_fog_color),gammaToLinear(u_horizon_color),blend_color);float factor_fog=max(v_fog_depth-u_fog_ground_blend,0.0)/(1.0-u_fog_ground_blend);gl_FragColor=linearToGamma(mix(surface_color_linear,fog_horizon_color_linear,pow(factor_fog,2.0)*u_fog_ground_blend_opacity));} else {gl_FragColor=surface_color;}}","attribute vec3 a_pos3d;uniform mat4 u_fog_matrix;uniform float u_ele_delta;varying vec2 v_texture_pos;varying float v_fog_depth;void main() {float ele=get_elevation(a_pos3d.xy);float ele_delta=a_pos3d.z==1.0 ? u_ele_delta : 0.0;v_texture_pos=a_pos3d.xy/8192.0;gl_Position=projectTileFor3D(a_pos3d.xy,get_elevation(a_pos3d.xy)-ele_delta);vec4 pos=u_fog_matrix*vec4(a_pos3d.xy,ele,1.0);v_fog_depth=pos.z/pos.w*0.5+0.5;}"),terrainDepth:xt("varying float v_depth;const highp vec4 bitSh=vec4(256.*256.*256.,256.*256.,256.,1.);const highp vec4 bitMsk=vec4(0.,vec3(1./256.0));highp vec4 pack(highp float value) {highp vec4 comp=fract(value*bitSh);comp-=comp.xxyz*bitMsk;return comp;}void main() {gl_FragColor=pack(v_depth);}","attribute vec3 a_pos3d;uniform float u_ele_delta;varying float v_depth;void main() {float ele=get_elevation(a_pos3d.xy);float ele_delta=a_pos3d.z==1.0 ? u_ele_delta : 0.0;gl_Position=projectTileFor3D(a_pos3d.xy,ele-ele_delta);v_depth=gl_Position.z/gl_Position.w;}"),terrainCoords:xt("precision mediump float;uniform sampler2D u_texture;uniform float u_terrain_coords_id;varying vec2 v_texture_pos;void main() {vec4 rgba=texture2D(u_texture,v_texture_pos);gl_FragColor=vec4(rgba.r,rgba.g,rgba.b,u_terrain_coords_id);}","attribute vec3 a_pos3d;uniform float u_ele_delta;varying vec2 v_texture_pos;void main() {float ele=get_elevation(a_pos3d.xy);float ele_delta=a_pos3d.z==1.0 ? u_ele_delta : 0.0;v_texture_pos=a_pos3d.xy/8192.0;gl_Position=projectTileFor3D(a_pos3d.xy,ele-ele_delta);}"),projectionErrorMeasurement:xt("varying vec4 v_output_error_encoded;void main() {gl_FragColor=v_output_error_encoded;}","attribute vec2 a_pos;uniform highp float u_input;uniform highp float u_output_expected;varying vec4 v_output_error_encoded;void main() {float real_output=2.0*atan(exp(PI-(u_input*PI*2.0)))-PI*0.5;float error=real_output-u_output_expected;float abs_error=abs(error)*128.0;v_output_error_encoded.x=min(floor(abs_error*256.0),255.0)/255.0;abs_error-=v_output_error_encoded.x;v_output_error_encoded.y=min(floor(abs_error*65536.0),255.0)/255.0;abs_error-=v_output_error_encoded.x/255.0;v_output_error_encoded.z=min(floor(abs_error*16777216.0),255.0)/255.0;v_output_error_encoded.w=error >=0.0 ? 1.0 : 0.0;gl_Position=vec4(a_pos,0.0,1.0);}"),atmosphere:xt("varying vec3 view_direction;uniform vec3 u_sun_pos;uniform vec3 u_globe_position;uniform float u_globe_radius;uniform float u_atmosphere_blend;/**Shader use from https:*Made some change to adapt to MapLibre Globe geometry*/const float PI=3.141592653589793;const int iSteps=5;const int jSteps=3;/*radius of the planet*/const float EARTH_RADIUS=6371e3;/*radius of the atmosphere*/const float ATMOS_RADIUS=6471e3;vec2 rsi(vec3 r0,vec3 rd,float sr) {float a=dot(rd,rd);float b=2.0*dot(rd,r0);float c=dot(r0,r0)-(sr*sr);float d=(b*b)-4.0*a*c;if (d < 0.0) return vec2(1e5,-1e5);return vec2((-b-sqrt(d))/(2.0*a),(-b+sqrt(d))/(2.0*a));}vec4 atmosphere(vec3 r,vec3 r0,vec3 pSun,float iSun,float rPlanet,float rAtmos,vec3 kRlh,float kMie,float shRlh,float shMie,float g) {pSun=normalize(pSun);r=normalize(r);vec2 p=rsi(r0,r,rAtmos);if (p.x > p.y) return vec4(0,0,0,0);if (p.x < 0.0) {p.x=0.0;}vec3 pos=r0+r*p.x;vec2 p2=rsi(r0,r,rPlanet);if (p2.x <=p2.y && p2.x > 0.0) {p.y=min(p.y,p2.x);}float iStepSize=(p.y-p.x)/float(iSteps);float iTime=p.x+iStepSize*0.5;vec3 totalRlh=vec3(0,0,0);vec3 totalMie=vec3(0,0,0);float iOdRlh=0.0;float iOdMie=0.0;float mu=dot(r,pSun);float mumu=mu*mu;float gg=g*g;float pRlh=3.0/(16.0*PI)*(1.0+mumu);float pMie=3.0/(8.0*PI)*((1.0-gg)*(mumu+1.0))/(pow(1.0+gg-2.0*mu*g,1.5)*(2.0+gg));for (int i=0; i < iSteps; i++) {vec3 iPos=r0+r*iTime;float iHeight=length(iPos)-rPlanet;float odStepRlh=exp(-iHeight/shRlh)*iStepSize;float odStepMie=exp(-iHeight/shMie)*iStepSize;iOdRlh+=odStepRlh;iOdMie+=odStepMie;float jStepSize=rsi(iPos,pSun,rAtmos).y/float(jSteps);float jTime=jStepSize*0.5;float jOdRlh=0.0;float jOdMie=0.0;for (int j=0; j < jSteps; j++) {vec3 jPos=iPos+pSun*jTime;float jHeight=length(jPos)-rPlanet;jOdRlh+=exp(-jHeight/shRlh)*jStepSize;jOdMie+=exp(-jHeight/shMie)*jStepSize;jTime+=jStepSize;}vec3 attn=exp(-(kMie*(iOdMie+jOdMie)+kRlh*(iOdRlh+jOdRlh)));totalRlh+=odStepRlh*attn;totalMie+=odStepMie*attn;iTime+=iStepSize;}float opacity=min(0.75,exp(-(length(kRlh)*length(totalRlh)+kMie*length(totalMie))));vec3 color=iSun*(pRlh*kRlh*totalRlh+pMie*kMie*totalMie);return vec4(color,opacity);}void main() {vec3 scale_camera_pos=-u_globe_position*EARTH_RADIUS/u_globe_radius;vec4 color=atmosphere(normalize(view_direction),scale_camera_pos,u_sun_pos,22.0,EARTH_RADIUS,ATMOS_RADIUS,vec3(5.5e-6,13.0e-6,22.4e-6),21e-6,8e3,1.2e3,0.758\n);color.xyz=1.0-exp(-1.0*color.xyz);vec4 no_effect_color=vec4(0,0,0,0);gl_FragColor=mix(color,no_effect_color,1.0-u_atmosphere_blend);}","attribute vec2 a_pos;uniform mat4 u_inv_proj_matrix;varying vec3 view_direction;void main() {view_direction=(u_inv_proj_matrix*vec4(a_pos,0.0,1.0)).xyz;gl_Position=vec4(a_pos,0.0,1.0);}"),sky:xt("uniform vec4 u_sky_color;uniform vec4 u_horizon_color;uniform vec2 u_horizon;uniform vec2 u_horizon_normal;uniform float u_sky_horizon_blend;uniform float u_sky_blend;void main() {float x=gl_FragCoord.x;float y=gl_FragCoord.y;float blend=(y-u_horizon.y)*u_horizon_normal.y+(x-u_horizon.x)*u_horizon_normal.x;if (blend > 0.0) {if (blend < u_sky_horizon_blend) {gl_FragColor=mix(u_sky_color,u_horizon_color,pow(1.0-blend/u_sky_horizon_blend,2.0));} else {gl_FragColor=u_sky_color;}}gl_FragColor=mix(gl_FragColor,vec4(vec3(0.0),0.0),u_sky_blend);}","attribute vec2 a_pos;void main() {gl_Position=vec4(a_pos,1.0,1.0);}")};function xt(e,t){const i=/#pragma mapbox: ([\w]+) ([\w]+) ([\w]+) ([\w]+)/g,r=t.match(/attribute ([\w]+) ([\w]+)/g),o=e.match(/uniform ([\w]+) ([\w]+)([\s]*)([\w]*)/g),a=t.match(/uniform ([\w]+) ([\w]+)([\s]*)([\w]*)/g),s=a?a.concat(o):o,n={};return {fragmentSource:e=e.replace(i,((e,t,i,r,o)=>(n[o]=!0,"define"===t?`\n#ifndef HAS_UNIFORM_u_${o}\nvarying ${i} ${r} ${o};\n#else\nuniform ${i} ${r} u_${o};\n#endif\n`:`\n#ifdef HAS_UNIFORM_u_${o}\n ${i} ${r} ${o} = u_${o};\n#endif\n`))),vertexSource:t=t.replace(i,((e,t,i,r,o)=>{const a="float"===r?"vec2":"vec4",s=o.match(/color/)?"color":a;return n[o]?"define"===t?`\n#ifndef HAS_UNIFORM_u_${o}\nuniform lowp float u_${o}_t;\nattribute ${i} ${a} a_${o};\nvarying ${i} ${r} ${o};\n#else\nuniform ${i} ${r} u_${o};\n#endif\n`:"vec4"===s?`\n#ifndef HAS_UNIFORM_u_${o}\n ${o} = a_${o};\n#else\n ${i} ${r} ${o} = u_${o};\n#endif\n`:`\n#ifndef HAS_UNIFORM_u_${o}\n ${o} = unpack_mix_${s}(a_${o}, u_${o}_t);\n#else\n ${i} ${r} ${o} = u_${o};\n#endif\n`:"define"===t?`\n#ifndef HAS_UNIFORM_u_${o}\nuniform lowp float u_${o}_t;\nattribute ${i} ${a} a_${o};\n#else\nuniform ${i} ${r} u_${o};\n#endif\n`:"vec4"===s?`\n#ifndef HAS_UNIFORM_u_${o}\n ${i} ${r} ${o} = a_${o};\n#else\n ${i} ${r} ${o} = u_${o};\n#endif\n`:`\n#ifndef HAS_UNIFORM_u_${o}\n ${i} ${r} ${o} = unpack_mix_${s}(a_${o}, u_${o}_t);\n#else\n ${i} ${r} ${o} = u_${o};\n#endif\n`})),staticAttributes:r,staticUniforms:s}}class bt{constructor(e,t,i){this.vertexBuffer=e,this.indexBuffer=t,this.segments=i;}destroy(){this.vertexBuffer.destroy(),this.indexBuffer.destroy(),this.segments.destroy(),this.vertexBuffer=null,this.indexBuffer=null,this.segments=null;}}var wt=t.createLayout([{name:"a_pos",type:"Int16",components:2}]);const Tt="#define PROJECTION_MERCATOR",Et="mercator";class Pt{constructor(){this._cachedMesh=null;}get name(){return "mercator"}get useSubdivision(){return !1}get shaderVariantName(){return Et}get shaderDefine(){return Tt}get shaderPreludeCode(){return yt.projectionMercator}get vertexShaderPreludeCode(){return yt.projectionMercator.vertexSource}get subdivisionGranularity(){return t.SubdivisionGranularitySetting.noSubdivision}get useGlobeControls(){return !1}destroy(){}isRenderingDirty(){return !1}updateGPUdependent(e){}getMeshFromTileID(e,i,r,o,a){if(this._cachedMesh)return this._cachedMesh;const s=new t.PosArray;s.emplaceBack(0,0),s.emplaceBack(t.EXTENT,0),s.emplaceBack(0,t.EXTENT),s.emplaceBack(t.EXTENT,t.EXTENT);const n=e.createVertexBuffer(s,wt.members),l=t.SegmentVector.simpleSegment(0,0,4,2),c=new t.TriangleIndexArray;c.emplaceBack(1,0,2),c.emplaceBack(1,2,3);const h=e.createIndexBuffer(c);return this._cachedMesh=new bt(n,h,l),this._cachedMesh}}function It(e){return t.MercatorCoordinate.fromLngLat(e)}function Ct(e){return e&&e.toLngLat()}function Mt(e,i){const r=t.clamp(i.lat,-85.051129,ce);return new t.Point(t.mercatorXfromLng(i.lng)*e,t.mercatorYfromLat(r)*e)}function St(e,i){return new t.MercatorCoordinate(i.x/e,i.y/e).toLngLat()}function Rt(e){return e.cameraToCenterDistance*Math.min(.85*Math.tan(t.degreesToRadians(90-e.pitch)),Math.tan(t.degreesToRadians(89.25-e.pitch)))}function Dt(e,i){const r=e.canonical,o=i/ue(r.z),a=r.x+Math.pow(2,r.z)*e.wrap,s=t.identity(new Float64Array(16));return t.translate(s,s,[a*o,r.y*o,0]),t.scale(s,s,[o/t.EXTENT,o/t.EXTENT,1]),s}function zt(e,i,r,o,a){const s=t.MercatorCoordinate.fromLngLat(e,i),n=a*t.mercatorZfromAltitude(1,e.lat),l=n*Math.cos(t.degreesToRadians(r)),c=Math.sqrt(n*n-l*l),h=c*Math.sin(t.degreesToRadians(-o)),u=c*Math.cos(t.degreesToRadians(-o));return new t.MercatorCoordinate(s.x+h,s.y+u,s.z+l)}class Lt{constructor(e,i){this.min=e,this.max=i,this.center=t.scale$2([],t.add([],this.min,this.max),.5);}quadrant(e){const i=[e%2==0,e<2],r=t.clone(this.min),o=t.clone(this.max);for(let e=0;ethis.max[0]||e.aabb.min[1]>this.max[1]||e.aabb.min[2]>this.max[2]||e.aabb.max[0]0?(t+=e[r]*this.min[r],i+=e[r]*this.max[r]):(i+=e[r]*this.min[r],t+=e[r]*this.max[r]);return t>=0?2:i<0?0:1}}class At{distanceToTile2d(e,t,i,r){const o=r.distanceX([e,t]),a=r.distanceY([e,t]);return Math.hypot(o,a)}getWrap(e,t,i){return i}getTileAABB(e,i,r,o){var a,s;let n=r,l=r;if(o.terrain){const c=new t.OverscaledTileID(e.z,i,e.z,e.x,e.y),h=o.terrain.getMinMaxElevation(c);n=null!==(a=h.minElevation)&&void 0!==a?a:r,l=null!==(s=h.maxElevation)&&void 0!==s?s:r;}const c=1<o||e.padding.top>=.1}allowWorldCopies(){return !0}}class kt{constructor(e,t,i){this.points=e,this.planes=t,this.aabb=i;}static fromInvProjectionMatrix(e,i=1,r=0){const o=Math.pow(2,r),a=[[-1,1,-1,1],[1,1,-1,1],[1,-1,-1,1],[-1,-1,-1,1],[-1,1,1,1],[1,1,1,1],[1,-1,1,1],[-1,-1,1,1]].map((r=>{const a=1/(r=t.transformMat4([],r,e))[3]/i*o;return t.mul(r,r,[a,a,1/r[3],a])})),s=[[0,1,2],[6,5,4],[0,3,7],[2,1,5],[3,2,6],[0,4,5]].map((e=>{const i=t.sub([],a[e[0]],a[e[1]]),r=t.sub([],a[e[2]],a[e[1]]),o=t.normalize([],t.cross([],i,r)),s=-t.dot(o,a[e[1]]);return o.concat(s)})),n=[Number.POSITIVE_INFINITY,Number.POSITIVE_INFINITY,Number.POSITIVE_INFINITY],l=[Number.NEGATIVE_INFINITY,Number.NEGATIVE_INFINITY,Number.NEGATIVE_INFINITY];for(const e of a)for(let t=0;t<3;t++)n[t]=Math.min(n[t],e[t]),l[t]=Math.max(l[t],e[t]);return new kt(a,s,new Lt(n,l))}}class Ft{get pixelsToClipSpaceMatrix(){return this._helper.pixelsToClipSpaceMatrix}get clipSpaceToPixelsMatrix(){return this._helper.clipSpaceToPixelsMatrix}get pixelsToGLUnits(){return this._helper.pixelsToGLUnits}get centerOffset(){return this._helper.centerOffset}get size(){return this._helper.size}get rotationMatrix(){return this._helper.rotationMatrix}get centerPoint(){return this._helper.centerPoint}get pixelsPerMeter(){return this._helper.pixelsPerMeter}setMinZoom(e){this._helper.setMinZoom(e);}setMaxZoom(e){this._helper.setMaxZoom(e);}setMinPitch(e){this._helper.setMinPitch(e);}setMaxPitch(e){this._helper.setMaxPitch(e);}setRenderWorldCopies(e){this._helper.setRenderWorldCopies(e);}setBearing(e){this._helper.setBearing(e);}setPitch(e){this._helper.setPitch(e);}setRoll(e){this._helper.setRoll(e);}setFov(e){this._helper.setFov(e);}setZoom(e){this._helper.setZoom(e);}setCenter(e){this._helper.setCenter(e);}setElevation(e){this._helper.setElevation(e);}setMinElevationForCurrentTile(e){this._helper.setMinElevationForCurrentTile(e);}setPadding(e){this._helper.setPadding(e);}interpolatePadding(e,t,i){return this._helper.interpolatePadding(e,t,i)}isPaddingEqual(e){return this._helper.isPaddingEqual(e)}resize(e,t){this._helper.resize(e,t);}getMaxBounds(){return this._helper.getMaxBounds()}setMaxBounds(e){this._helper.setMaxBounds(e);}getCameraQueryGeometry(e){return this._helper.getCameraQueryGeometry(this.getCameraPoint(),e)}get tileSize(){return this._helper.tileSize}get tileZoom(){return this._helper.tileZoom}get scale(){return this._helper.scale}get worldSize(){return this._helper.worldSize}get width(){return this._helper.width}get height(){return this._helper.height}get lngRange(){return this._helper.lngRange}get latRange(){return this._helper.latRange}get minZoom(){return this._helper.minZoom}get maxZoom(){return this._helper.maxZoom}get zoom(){return this._helper.zoom}get center(){return this._helper.center}get minPitch(){return this._helper.minPitch}get maxPitch(){return this._helper.maxPitch}get pitch(){return this._helper.pitch}get pitchInRadians(){return this._helper.pitchInRadians}get roll(){return this._helper.roll}get rollInRadians(){return this._helper.rollInRadians}get bearing(){return this._helper.bearing}get bearingInRadians(){return this._helper.bearingInRadians}get fov(){return this._helper.fov}get fovInRadians(){return this._helper.fovInRadians}get elevation(){return this._helper.elevation}get minElevationForCurrentTile(){return this._helper.minElevationForCurrentTile}get padding(){return this._helper.padding}get unmodified(){return this._helper.unmodified}get renderWorldCopies(){return this._helper.renderWorldCopies}constructor(e,t,i,r,o){this._posMatrixCache=new Map,this._alignedPosMatrixCache=new Map,this._fogMatrixCacheF32=new Map,this._helper=new pe({calcMatrices:()=>{this._calcMatrices();},getConstrained:(e,t)=>this.getConstrained(e,t)},e,t,i,r,o),this._coveringTilesDetailsProvider=new At;}clone(){const e=new Ft;return e.apply(this),e}apply(e,t){this._helper.apply(e,t);}get cameraToCenterDistance(){return this._cameraToCenterDistance}get cameraPosition(){return this._cameraPosition}get projectionMatrix(){return this._projectionMatrix}get modelViewProjectionMatrix(){return this._viewProjMatrix}get inverseProjectionMatrix(){return this._invProjMatrix}get nearZ(){return this._nearZ}get farZ(){return this._farZ}get mercatorMatrix(){return this._mercatorMatrix}getVisibleUnwrappedCoordinates(e){const i=[new t.UnwrappedTileID(0,e)];if(this._helper._renderWorldCopies){const r=this.screenPointToMercatorCoordinate(new t.Point(0,0)),o=this.screenPointToMercatorCoordinate(new t.Point(this._helper._width,0)),a=this.screenPointToMercatorCoordinate(new t.Point(this._helper._width,this._helper._height)),s=this.screenPointToMercatorCoordinate(new t.Point(0,this._helper._height)),n=Math.floor(Math.min(r.x,o.x,a.x,s.x)),l=Math.floor(Math.max(r.x,o.x,a.x,s.x)),c=1;for(let r=n-c;r<=l+c;r++)0!==r&&i.push(new t.UnwrappedTileID(r,e));}return i}getCameraFrustum(){return kt.fromInvProjectionMatrix(this._invViewProjMatrix,this.worldSize)}getClippingPlane(){return null}getCoveringTilesDetailsProvider(){return this._coveringTilesDetailsProvider}recalculateZoomAndCenter(e){const i=this.screenPointToLocation(this.centerPoint,e),r=e?e.getElevationForLngLatZoom(i,this._helper._tileZoom):0;if(!(this.elevation-r))return;const o=t.mercatorZfromAltitude(1,this.center.lat)*this.worldSize,a=this._cameraToCenterDistance/o,s=t.MercatorCoordinate.fromLngLat(this.center,this.elevation),n=zt(this.center,this.elevation,this.pitch,this.bearing,a);this._helper._elevation=r;const l=this.calculateCenterFromCameraLngLatAlt(n.toLngLat(),t.altitudeFromMercatorZ(n.z,s.y),this.bearing,this.pitch);this._helper._elevation=l.elevation,this._helper._center=l.center,this.setZoom(l.zoom);}setLocationAtPoint(e,i){const r=t.mercatorZfromAltitude(this.elevation,this.center.lat),o=this.screenPointToMercatorCoordinateAtZ(i,r),a=this.screenPointToMercatorCoordinateAtZ(this.centerPoint,r),s=It(e),n=new t.MercatorCoordinate(s.x-(o.x-a.x),s.y-(o.y-a.y));this.setCenter(Ct(n)),this._helper._renderWorldCopies&&this.setCenter(this.center.wrap());}locationToScreenPoint(e,t){return t?this.coordinatePoint(It(e),t.getElevationForLngLatZoom(e,this._helper._tileZoom),this._pixelMatrix3D):this.coordinatePoint(It(e))}screenPointToLocation(e,t){return Ct(this.screenPointToMercatorCoordinate(e,t))}screenPointToMercatorCoordinate(e,t){if(t){const i=t.pointCoordinate(e);if(null!=i)return i}return this.screenPointToMercatorCoordinateAtZ(e)}screenPointToMercatorCoordinateAtZ(e,i){const r=i||0,o=[e.x,e.y,0,1],a=[e.x,e.y,1,1];t.transformMat4(o,o,this._pixelMatrixInverse),t.transformMat4(a,a,this._pixelMatrixInverse);const s=o[3],n=a[3],l=o[1]/s,c=a[1]/n,h=o[2]/s,u=a[2]/n,d=h===u?0:(r-h)/(u-h);return new t.MercatorCoordinate(t.interpolateFactory.number(o[0]/s,a[0]/n,d)/this.worldSize,t.interpolateFactory.number(l,c,d)/this.worldSize,r)}coordinatePoint(e,i=0,r=this._pixelMatrix){const o=[e.x*this.worldSize,e.y*this.worldSize,i,1];return t.transformMat4(o,o,r),new t.Point(o[0]/o[3],o[1]/o[3])}getBounds(){const e=Math.max(0,this._helper._height/2-Rt(this));return (new V).extend(this.screenPointToLocation(new t.Point(0,e))).extend(this.screenPointToLocation(new t.Point(this._helper._width,e))).extend(this.screenPointToLocation(new t.Point(this._helper._width,this._helper._height))).extend(this.screenPointToLocation(new t.Point(0,this._helper._height)))}isPointOnMapSurface(e,t){return t?null!=t.pointCoordinate(e):e.y>this.height/2-Rt(this)}calculatePosMatrix(e,i=!1,r){var o;const a=null!==(o=e.key)&&void 0!==o?o:t.calculateTileKey(e.wrap,e.canonical.z,e.canonical.z,e.canonical.x,e.canonical.y),s=i?this._alignedPosMatrixCache:this._posMatrixCache;if(s.has(a)){const e=s.get(a);return r?e.f32:e.f64}const n=Dt(e,this.worldSize);t.multiply(n,i?this._alignedProjMatrix:this._viewProjMatrix,n);const l={f64:n,f32:new Float32Array(n)};return s.set(a,l),r?l.f32:l.f64}calculateFogMatrix(e){const i=e.key,r=this._fogMatrixCacheF32;if(r.has(i))return r.get(i);const o=Dt(e,this.worldSize);return t.multiply(o,this._fogMatrix,o),r.set(i,new Float32Array(o)),r.get(i)}getConstrained(e,i){i=t.clamp(+i,this.minZoom,this.maxZoom);const r={center:new t.LngLat(e.lng,e.lat),zoom:i};let o=this._helper._lngRange;if(!this._helper._renderWorldCopies&&null===o){const e=180-1e-10;o=[-e,e];}const a=this.tileSize*ue(r.zoom);let s=0,n=a,l=0,c=a,h=0,u=0;const{x:d,y:_}=this.size;if(this._helper._latRange){const e=this._helper._latRange;s=t.mercatorYfromLat(e[1])*a,n=t.mercatorYfromLat(e[0])*a,n-s<_&&(h=_/(n-s));}o&&(l=t.wrap(t.mercatorXfromLng(o[0])*a,0,a),c=t.wrap(t.mercatorXfromLng(o[1])*a,0,a),cn&&(g=n-e);}if(o){const e=(l+c)/2;let i=p;this._helper._renderWorldCopies&&(i=t.wrap(p,e-a/2,e+a/2));const r=d/2;i-rc&&(f=c-r);}if(void 0!==f||void 0!==g){const e=new t.Point(null!=f?f:p,null!=g?g:m);r.center=St(a,e).wrap();}return r}calculateCenterFromCameraLngLatAlt(e,i,r,o){const a=void 0!==r?r:this.bearing,s=o=void 0!==o?o:this.pitch,n=t.MercatorCoordinate.fromLngLat(e,i),l=-Math.cos(t.degreesToRadians(s)),c=Math.sin(t.degreesToRadians(s)),h=c*Math.sin(t.degreesToRadians(a)),u=-c*Math.cos(t.degreesToRadians(a));let d=this.elevation;const _=i-d;let p;l*_>=0||Math.abs(l)<.1?(p=1e4,d=i+p*l):p=-_/l;let m,f,g=t.altitudeFromMercatorZ(1,n.y),v=0;do{if(v+=1,v>10)break;f=p/g,m=new t.MercatorCoordinate(n.x+h*f,n.y+u*f),g=1/m.meterInMercatorCoordinateUnits();}while(Math.abs(p-f*g)>1e-12);return {center:m.toLngLat(),elevation:d,zoom:de(this.height/2/Math.tan(this.fovInRadians/2)/f/this.tileSize)}}_calcMatrices(){if(!this._helper._height)return;const e=this.fovInRadians/2,i=this.centerOffset,r=Mt(this.worldSize,this.center),o=r.x,a=r.y;this._cameraToCenterDistance=.5/Math.tan(e)*this._helper._height,this._helper._pixelPerMeter=t.mercatorZfromAltitude(1,this.center.lat)*this.worldSize;const s=t.degreesToRadians(Math.min(this.pitch,89.25)),n=Math.max(this._cameraToCenterDistance/2,this._cameraToCenterDistance+this._helper._elevation*this._helper._pixelPerMeter/Math.cos(s)),l=Math.min(this.elevation,this.minElevationForCurrentTile,this.getCameraAltitude()-100),c=n-l*this._helper._pixelPerMeter/Math.cos(s),h=l<0?c:n,u=Math.PI/2+this.pitchInRadians,d=t.degreesToRadians(this.fov)*(Math.abs(Math.cos(t.degreesToRadians(this.roll)))*this.height+Math.abs(Math.sin(t.degreesToRadians(this.roll)))*this.width)/this.height*(.5+i.y/this.height),_=Math.sin(d)*h/Math.sin(t.clamp(Math.PI-u-d,.01,Math.PI-.01)),p=Rt(this),m=Math.atan(p/this._cameraToCenterDistance),f=t.degreesToRadians(.75),g=m>f?2*m*(.5+i.y/(2*p)):f,v=Math.sin(g)*h/Math.sin(t.clamp(Math.PI-u-g,.01,Math.PI-.01)),y=Math.min(_,v);let x;this._farZ=1.01*(Math.cos(Math.PI/2-s)*y+h),this._nearZ=this._helper._height/50,x=new Float64Array(16),t.perspective(x,this.fovInRadians,this._helper._width/this._helper._height,this._nearZ,this._farZ),this._invProjMatrix=new Float64Array(16),t.invert(this._invProjMatrix,x),x[8]=2*-i.x/this._helper._width,x[9]=2*i.y/this._helper._height,this._projectionMatrix=t.clone$1(x),t.scale(x,x,[1,-1,1]),t.translate(x,x,[0,0,-this._cameraToCenterDistance]),t.rotateZ(x,x,-this.rollInRadians),t.rotateX(x,x,this.pitchInRadians),t.rotateZ(x,x,-this.bearingInRadians),t.translate(x,x,[-o,-a,0]),this._mercatorMatrix=t.scale([],x,[this.worldSize,this.worldSize,this.worldSize]),t.scale(x,x,[1,1,this._helper._pixelPerMeter]),this._pixelMatrix=t.multiply(new Float64Array(16),this.clipSpaceToPixelsMatrix,x),t.translate(x,x,[0,0,-this.elevation]),this._viewProjMatrix=x,this._invViewProjMatrix=t.invert([],x);const b=[0,0,-1,1];t.transformMat4(b,b,this._invViewProjMatrix),this._cameraPosition=[b[0]/b[3],b[1]/b[3],b[2]/b[3]],this._fogMatrix=new Float64Array(16),t.perspective(this._fogMatrix,this.fovInRadians,this.width/this.height,n,this._farZ),this._fogMatrix[8]=2*-i.x/this.width,this._fogMatrix[9]=2*i.y/this.height,t.scale(this._fogMatrix,this._fogMatrix,[1,-1,1]),t.translate(this._fogMatrix,this._fogMatrix,[0,0,-this.cameraToCenterDistance]),t.rotateZ(this._fogMatrix,this._fogMatrix,-this.rollInRadians),t.rotateX(this._fogMatrix,this._fogMatrix,this.pitchInRadians),t.rotateZ(this._fogMatrix,this._fogMatrix,-this.bearingInRadians),t.translate(this._fogMatrix,this._fogMatrix,[-o,-a,0]),t.scale(this._fogMatrix,this._fogMatrix,[1,1,this._helper._pixelPerMeter]),t.translate(this._fogMatrix,this._fogMatrix,[0,0,-this.elevation]),this._pixelMatrix3D=t.multiply(new Float64Array(16),this.clipSpaceToPixelsMatrix,x);const w=this._helper._width%2/2,T=this._helper._height%2/2,E=Math.cos(this.bearingInRadians),P=Math.sin(-this.bearingInRadians),I=o-Math.round(o)+E*w+P*T,C=a-Math.round(a)+E*T+P*w,M=new Float64Array(x);if(t.translate(M,M,[I>.5?I-1:I,C>.5?C-1:C,0]),this._alignedProjMatrix=M,x=t.invert(new Float64Array(16),this._pixelMatrix),!x)throw new Error("failed to invert matrix");this._pixelMatrixInverse=x,this._clearMatrixCaches();}_clearMatrixCaches(){this._posMatrixCache.clear(),this._alignedPosMatrixCache.clear(),this._fogMatrixCacheF32.clear();}maxPitchScaleFactor(){if(!this._pixelMatrixInverse)return 1;const e=this.screenPointToMercatorCoordinate(new t.Point(0,0)),i=[e.x*this.worldSize,e.y*this.worldSize,0,1];return t.transformMat4(i,i,this._pixelMatrix)[3]/this._cameraToCenterDistance}getCameraPoint(){const e=Math.tan(this.pitchInRadians)*(this._cameraToCenterDistance||1);return this.centerPoint.add(new t.Point(e*Math.sin(this.rollInRadians),e*Math.cos(this.rollInRadians)))}getCameraAltitude(){return Math.cos(this.pitchInRadians)*this._cameraToCenterDistance/this._helper._pixelPerMeter+this.elevation}getCameraLngLat(){const e=.5/Math.tan(this.fovInRadians/2)*this.height,i=t.mercatorZfromAltitude(1,this.center.lat)*this.worldSize;return zt(this.center,this.elevation,this.pitch,this.bearing,e/i).toLngLat()}lngLatToCameraDepth(e,i){const r=It(e),o=[r.x*this.worldSize,r.y*this.worldSize,i,1];return t.transformMat4(o,o,this._viewProjMatrix),o[2]/o[3]}isRenderingDirty(){return !1}getProjectionData(e){const{overscaledTileID:i,aligned:r,applyTerrainMatrix:o}=e;return function(e,i,r=!0){let o,a;if(e){const i=e.canonical.z>=0?1<{if(c&&e.setZoom(t.interpolateFactory.number(r,p,n)),t.rollPitchBearingEqual(a,s)||Ot({startEulerAngles:a,endEulerAngles:s,tr:e,k:n,useSlerp:a.roll!=s.roll}),l&&(e.interpolatePadding(o,i.padding,n),u=e.centerPoint.add(i.offsetAsPoint)),i.around)e.setLocationAtPoint(i.around,i.aroundPoint);else {const t=ue(e.zoom-r),i=p>r?Math.min(2,g):Math.max(.5,g),o=Math.pow(i,1-n),a=St(e.worldSize,m.add(f.mult(n*o)).mult(t));e.setLocationAtPoint(e.renderWorldCopies?a.wrap():a,u);}},isZooming:c,elevationCenter:_}}handleFlyTo(e,i){const r=void 0!==i.zoom,o=e.zoom,a=e.getConstrained(t.LngLat.convert(i.center||i.locationAtOffset),r?+i.zoom:o),s=a.center,n=a.zoom;he(e,s);const l=Mt(e.worldSize,i.locationAtOffset),c=Mt(e.worldSize,s).sub(l),h=c.mag(),u=ue(n-o);let d;if(void 0!==i.minZoom){const t=Math.min(+i.minZoom,o,n);d=ue(e.getConstrained(s,t).zoom-o);}return {easeFunc:(t,i,r,a)=>{e.setZoom(1===t?n:o+de(i));const h=1===t?s:St(e.worldSize,l.add(c.mult(r)).mult(i));e.setLocationAtPoint(e.renderWorldCopies?h.wrap():h,a);},scaleOfZoom:u,targetCenter:s,scaleOfMinZoom:d,pixelPathLength:h}}}class jt{constructor(e,t,i){this.blendFunction=e,this.blendColor=t,this.mask=i;}}jt.Replace=[1,0],jt.disabled=new jt(jt.Replace,t.Color.transparent,[!1,!1,!1,!1]),jt.unblended=new jt(jt.Replace,t.Color.transparent,[!0,!0,!0,!0]),jt.alphaBlended=new jt([1,771],t.Color.transparent,[!0,!0,!0,!0]);const Nt=2305;class Gt{constructor(e,t,i){this.enable=e,this.mode=t,this.frontFace=i;}}Gt.disabled=new Gt(!1,1029,Nt),Gt.backCCW=new Gt(!0,1029,Nt),Gt.frontCCW=new Gt(!0,1028,Nt);class Zt{constructor(e,t,i){this.func=e,this.mask=t,this.range=i;}}Zt.ReadOnly=!1,Zt.ReadWrite=!0,Zt.disabled=new Zt(519,Zt.ReadOnly,[0,1]);const Vt=7680;class qt{constructor(e,t,i,r,o,a){this.test=e,this.ref=t,this.mask=i,this.fail=r,this.depthFail=o,this.pass=a;}}qt.disabled=new qt({func:519,mask:0},0,0,Vt,Vt,Vt);const Wt=new WeakMap;function Xt(e){var t;if(Wt.has(e))return Wt.get(e);{const i=null===(t=e.getParameter(e.VERSION))||void 0===t?void 0:t.startsWith("WebGL 2.0");return Wt.set(e,i),i}}class $t{get awaitingQuery(){return !!this._readbackQueue}constructor(e){this._readbackWaitFrames=4,this._measureWaitFrames=6,this._texWidth=1,this._texHeight=1,this._measuredError=0,this._updateCount=0,this._lastReadbackFrame=-1e3,this._readbackQueue=null,this._cachedRenderContext=e;const i=e.context,r=i.gl;this._texFormat=r.RGBA,this._texType=r.UNSIGNED_BYTE;const o=new t.PosArray;o.emplaceBack(-1,-1),o.emplaceBack(2,-1),o.emplaceBack(-1,2);const a=new t.TriangleIndexArray;a.emplaceBack(0,1,2),this._fullscreenTriangle=new bt(i.createVertexBuffer(o,wt.members),i.createIndexBuffer(a),t.SegmentVector.simpleSegment(0,0,o.length,a.length)),this._resultBuffer=new Uint8Array(4),i.activeTexture.set(r.TEXTURE1);const s=r.createTexture();r.bindTexture(r.TEXTURE_2D,s),r.texParameteri(r.TEXTURE_2D,r.TEXTURE_WRAP_S,r.CLAMP_TO_EDGE),r.texParameteri(r.TEXTURE_2D,r.TEXTURE_WRAP_T,r.CLAMP_TO_EDGE),r.texParameteri(r.TEXTURE_2D,r.TEXTURE_MIN_FILTER,r.NEAREST),r.texParameteri(r.TEXTURE_2D,r.TEXTURE_MAG_FILTER,r.NEAREST),r.texImage2D(r.TEXTURE_2D,0,this._texFormat,this._texWidth,this._texHeight,0,this._texFormat,this._texType,null),this._fbo=i.createFramebuffer(this._texWidth,this._texHeight,!1,!1),this._fbo.colorAttachment.set(s),Xt(r)&&(this._pbo=r.createBuffer(),r.bindBuffer(r.PIXEL_PACK_BUFFER,this._pbo),r.bufferData(r.PIXEL_PACK_BUFFER,4,r.STREAM_READ),r.bindBuffer(r.PIXEL_PACK_BUFFER,null));}destroy(){const e=this._cachedRenderContext.context.gl;this._fullscreenTriangle.destroy(),this._fbo.destroy(),e.deleteBuffer(this._pbo),this._fullscreenTriangle=null,this._fbo=null,this._pbo=null,this._resultBuffer=null;}updateErrorLoop(e,t){const i=this._updateCount;return this._readbackQueue?i>=this._readbackQueue.frameNumberIssued+this._readbackWaitFrames&&this._tryReadback():i>=this._lastReadbackFrame+this._measureWaitFrames&&this._renderErrorTexture(e,t),this._updateCount++,this._measuredError}_bindFramebuffer(){const e=this._cachedRenderContext.context,t=e.gl;e.activeTexture.set(t.TEXTURE1),t.bindTexture(t.TEXTURE_2D,this._fbo.colorAttachment.get()),e.bindFramebuffer.set(this._fbo.framebuffer);}_renderErrorTexture(e,i){const r=this._cachedRenderContext.context,o=r.gl;if(this._bindFramebuffer(),r.viewport.set([0,0,this._texWidth,this._texHeight]),r.clear({color:t.Color.transparent}),this._cachedRenderContext.useProgram("projectionErrorMeasurement").draw(r,o.TRIANGLES,Zt.disabled,qt.disabled,jt.unblended,Gt.disabled,((e,t)=>({u_input:e,u_output_expected:t}))(e,i),null,null,"$clipping",this._fullscreenTriangle.vertexBuffer,this._fullscreenTriangle.indexBuffer,this._fullscreenTriangle.segments),this._pbo&&Xt(o)){o.bindBuffer(o.PIXEL_PACK_BUFFER,this._pbo),o.readBuffer(o.COLOR_ATTACHMENT0),o.readPixels(0,0,this._texWidth,this._texHeight,this._texFormat,this._texType,0),o.bindBuffer(o.PIXEL_PACK_BUFFER,null);const e=o.fenceSync(o.SYNC_GPU_COMMANDS_COMPLETE,0);o.flush(),this._readbackQueue={frameNumberIssued:this._updateCount,sync:e};}else this._readbackQueue={frameNumberIssued:this._updateCount,sync:null};}_tryReadback(){const e=this._cachedRenderContext.context.gl;if(this._pbo&&this._readbackQueue&&Xt(e)){const i=e.clientWaitSync(this._readbackQueue.sync,0,0);if(i===e.WAIT_FAILED)return t.warnOnce("WebGL2 clientWaitSync failed."),this._readbackQueue=null,void(this._lastReadbackFrame=this._updateCount);if(i===e.TIMEOUT_EXPIRED)return;e.bindBuffer(e.PIXEL_PACK_BUFFER,this._pbo),e.getBufferSubData(e.PIXEL_PACK_BUFFER,0,this._resultBuffer,0,4),e.bindBuffer(e.PIXEL_PACK_BUFFER,null);}else this._bindFramebuffer(),e.readPixels(0,0,this._texWidth,this._texHeight,this._texFormat,this._texType,this._resultBuffer);this._readbackQueue=null,this._measuredError=$t._parseRGBA8float(this._resultBuffer),this._lastReadbackFrame=this._updateCount;}static _parseRGBA8float(e){let t=0;return t+=e[0]/256,t+=e[1]/65536,t+=e[2]/16777216,e[3]<127&&(t=-t),t/128}}const Ht=t.EXTENT/128;function Kt(e,i){const r=void 0!==e.granularity?Math.max(e.granularity,1):1,o=r+(e.generateBorders?2:0),a=r+(e.extendToNorthPole||e.generateBorders?1:0)+(e.extendToSouthPole||e.generateBorders?1:0),s=o+1,n=a+1,l=e.generateBorders?-1:0,c=e.generateBorders||e.extendToNorthPole?-1:0,h=r+(e.generateBorders?1:0),u=r+(e.generateBorders||e.extendToSouthPole?1:0),d=s*n,_=o*a*6,p=s*n>65536;if(p&&"16bit"===i)throw new Error("Granularity is too large and meshes would not fit inside 16 bit vertex indices.");const m=p||"32bit"===i,f=new Int16Array(2*d);let g;g=m?{vertices:f,indices:new Uint32Array(_),uses32bitIndices:!0}:{vertices:f,indices:new Uint16Array(_),uses32bitIndices:!1};const v=g.indices;let y=0;for(let i=c;i<=u;i++)for(let o=l;o<=h;o++){let a=o/r*t.EXTENT;-1===o&&(a=-Ht),o===r+1&&(a=t.EXTENT+Ht);let s=i/r*t.EXTENT;-1===i&&(s=e.extendToNorthPole?t.NORTH_POLE_Y:-Ht),i===r+1&&(s=e.extendToSouthPole?t.SOUTH_POLE_Y:t.EXTENT+Ht),f[y++]=a,f[y++]=s;}let x=0;for(let e=0;e1e-6){const o=e[0]/r,a=Math.acos(e[2]/r),s=(o>0?a:-a)/Math.PI*180;return new t.LngLat(t.wrap(s,-180,180),i)}return new t.LngLat(0,i)}function oi(e){return Math.cos(e*Math.PI/180)}function ai(e,t){const i=oi(e);return de(oi(t)/i)}function si(e,i){const r=e.rotate(i.bearingInRadians),o=i.zoom+ai(i.center.lat,0),a=t.lerp(1/oi(i.center.lat),1/oi(Math.min(Math.abs(i.center.lat),60)),t.remapSaturate(o,7,3,0,1)),s=360/Qt({worldSize:i.worldSize,center:{lat:i.center.lat}});return new t.LngLat(i.center.lng-r.x*s*a,t.clamp(i.center.lat+r.y*s,-85.051129,ce))}function ni(e){const t=.5*e,i=Math.sin(t),r=Math.cos(t);return Math.log(i+r)-Math.log(r-i)}function li(e,i,r,o){const a=e.lat+r*o;if(Math.abs(r)>1){const s=(Math.sign(e.lat+r)!==Math.sign(e.lat)?-Math.abs(e.lat):Math.abs(e.lat))*Math.PI/180,n=Math.abs(e.lat+r)*Math.PI/180,l=ni(s+o*(n-s)),c=ni(s),h=ni(n);return new t.LngLat(e.lng+i*((l-c)/(h-c)),a)}return new t.LngLat(e.lng+i*o,a)}class ci{constructor(e){this._cachePrevious=new Map,this._cache=new Map,this._hadAnyChanges=!1,this._aabbFactory=e;}newFrame(){if(!this._hadAnyChanges)return;const e=this._cachePrevious;this._cachePrevious=this._cache,this._cache=e,this._cache.clear(),this._hadAnyChanges=!1;}getTileAABB(e,t,i,r){const o=`${e.z}_${e.x}_${e.y}`,a=this._cache.get(o);if(a)return a;const s=this._cachePrevious.get(o);if(s)return this._cache.set(o,s),s;const n=this._aabbFactory(e,t,i,r);return this._cache.set(o,n),this._hadAnyChanges=!0,n}}function hi(e,t,i){const r=e-t;return r<0?-r:Math.max(0,r-i)}function ui(e,t,i,r,o){const a=e-i;let s;return s=a<0?Math.min(-a,1+a-o):a>1?Math.min(Math.max(a-o,0),1-a):0,Math.max(s,hi(t,r,o))}class di{constructor(){this._aabbCache=new ci(this._computeTileAABB);}newFrame(){this._aabbCache.newFrame();}distanceToTile2d(e,t,i,r){const o=1<4}allowWorldCopies(){return !1}getTileAABB(e,t,i,r){return this._aabbCache.getTileAABB(e,t,i,r)}_computeTileAABB(e,i,r,o){if(e.z<=0)return new Lt([-1,-1,-1],[1,1,1]);if(1===e.z)return new Lt([0===e.x?-1:0,0===e.y?0:-1,-1],[0===e.x?0:1,0===e.y?1:0,1]);{const i=[ei(0,0,e.x,e.y,e.z),ei(t.EXTENT,0,e.x,e.y,e.z),ei(t.EXTENT,t.EXTENT,e.x,e.y,e.z),ei(0,t.EXTENT,e.x,e.y,e.z)],r=[1,1,1],o=[-1,-1,-1];for(const e of i)for(let t=0;t<3;t++)r[t]=Math.min(r[t],e[t]),o[t]=Math.max(o[t],e[t]);if(0===e.y||e.y===(1<0}constructor(e,i=!0,r=!0){this._cachedClippingPlane=t.createVec4f64(),this._lastGlobeStateEnabled=!0,this._lastUpdateTimeSeconds=f.now()/1e3,this._lastGlobeChangeTimeSeconds=f.now()/1e3-10,this._skipNextAnimation=!0,this._projectionMatrix=t.createIdentityMat4f64(),this._globeViewProjMatrix32f=t.createIdentityMat4f32(),this._globeViewProjMatrixNoCorrection=t.createIdentityMat4f64(),this._globeViewProjMatrixNoCorrectionInverted=t.createIdentityMat4f64(),this._globeProjMatrixInverted=t.createIdentityMat4f64(),this._cameraPosition=t.createVec3f64(),this._globeProjectionAllowed=!0,this._globeLatitudeErrorCorrectionRadians=0,this._globeness=1,this._adaptive=r,this._helper=new pe({calcMatrices:()=>{this._calcMatrices();},getConstrained:(e,t)=>this.getConstrained(e,t)}),this._globeProjectionAllowed=i,this._globeness=i?1:0,this._projectionInstance=e,this._mercatorTransform=new Ft,this._coveringTilesDetailsProvider=new di;}clone(){const e=new _i(null,this._globeProjectionAllowed);return e._applyGlobeTransform(this),e.apply(this),e}apply(e){this._helper.apply(e),this._mercatorTransform.apply(this);}_applyGlobeTransform(e){this._globeness=e._globeness,this._globeLatitudeErrorCorrectionRadians=e._globeLatitudeErrorCorrectionRadians;}get projectionMatrix(){return this.isGlobeRendering?this._projectionMatrix:this._mercatorTransform.projectionMatrix}get modelViewProjectionMatrix(){return this.isGlobeRendering?this._globeViewProjMatrixNoCorrection:this._mercatorTransform.modelViewProjectionMatrix}get inverseProjectionMatrix(){return this.isGlobeRendering?this._globeProjMatrixInverted:this._mercatorTransform.inverseProjectionMatrix}get cameraPosition(){const e=t.createVec3f64();return e[0]=this._cameraPosition[0],e[1]=this._cameraPosition[1],e[2]=this._cameraPosition[2],e}get cameraToCenterDistance(){return this._mercatorTransform.cameraToCenterDistance}get nearZ(){return this._nearZ}get farZ(){return this._farZ}getGlobeViewAllowed(){return this._globeProjectionAllowed}setGlobeViewAllowed(e,t=!0){e!==this._globeProjectionAllowed&&(t||(this._skipNextAnimation=!0),this._globeProjectionAllowed=e,this._lastGlobeChangeTimeSeconds=this._lastUpdateTimeSeconds);}newFrameUpdate(){this._lastUpdateTimeSeconds=f.now()/1e3;const e=this.isGlobeRendering;return this._globeness=!this._adaptive&&this._globeProjectionAllowed?1:this._computeGlobenessAnimation(),this._updateErrorCorrectionValue(),this._calcMatrices(),this._coveringTilesDetailsProvider.newFrame(),e===this.isGlobeRendering?{forcePlacementUpdate:!1}:{forcePlacementUpdate:!0,fireProjectionEvent:{type:"projectiontransition",newProjection:this.isGlobeRendering?"globe":"globe-mercator"},forceSourceUpdate:!0}}_updateErrorCorrectionValue(){this._projectionInstance&&(this._projectionInstance.useGlobeRendering=this.isGlobeRendering,this._projectionInstance.errorQueryLatitudeDegrees=this.center.lat,this._globeLatitudeErrorCorrectionRadians=this._projectionInstance.latitudeErrorCorrectionRadians);}_computeGlobenessAnimation(){const e=this._globeProjectionAllowed&&this.zoom<12,i=this._lastUpdateTimeSeconds;e!==this._lastGlobeStateEnabled&&(this._lastGlobeChangeTimeSeconds=i,this._lastGlobeStateEnabled=e);const r=this._globeness,o=Math.min(Math.max((i-this._lastGlobeChangeTimeSeconds)/.5,0),1);let a=e?o:1-o;return this._skipNextAnimation&&(a=e?1:0,this._lastGlobeChangeTimeSeconds=i-1,this._skipNextAnimation=!1),a=t.easeCubicInOut(a),r!==a&&(this.setCenter(new t.LngLat(this._mercatorTransform.center.lng+t.differenceOfAnglesDegrees(this._mercatorTransform.center.lng,this.center.lng)*a,t.lerp(this._mercatorTransform.center.lat,this.center.lat,a))),this.setZoom(t.lerp(this._mercatorTransform.zoom,this.zoom,a))),a}isRenderingDirty(){return this._lastUpdateTimeSeconds-this._lastGlobeChangeTimeSeconds<.5}getProjectionData(e){const{overscaledTileID:t,aligned:i,applyTerrainMatrix:r,applyGlobeMatrix:o}=e,a=this._mercatorTransform.getProjectionData({overscaledTileID:t,aligned:i,applyTerrainMatrix:r});return this.isGlobeRendering&&(a.mainMatrix=this._globeViewProjMatrix32f),a.clippingPlane=this._cachedClippingPlane,a.projectionTransition=o?this._globeness:0,a}_computeClippingPlane(e){const i=this.pitchInRadians,r=this.cameraToCenterDistance/e,o=Math.sin(i)*r,a=Math.cos(i)*r+1,s=1/Math.sqrt(o*o+a*a)*1;let n=-o,l=a;const c=Math.sqrt(n*n+l*l);n/=c,l/=c;const h=[0,n,l];return t.rotateZ$1(h,h,[0,0,0],-this.bearingInRadians),t.rotateX$1(h,h,[0,0,0],-1*this.center.lat*Math.PI/180),t.rotateY(h,h,[0,0,0],this.center.lng*Math.PI/180),t.scale$2(h,h,.25),[...h,.25*-s]}isLocationOccluded(e){return !this.isSurfacePointVisible(ti(e))}transformLightDirection(e){const i=this._helper._center.lng*Math.PI/180,r=this._helper._center.lat*Math.PI/180,o=Math.cos(r),a=[Math.sin(i)*o,Math.sin(r),Math.cos(i)*o],s=[a[2],0,-a[0]],n=[0,0,0];t.cross(n,s,a),t.normalize(s,s),t.normalize(n,n);const l=[0,0,0];return t.normalize(l,[s[0]*e[0]+n[0]*e[1]+a[0]*e[2],s[1]*e[0]+n[1]*e[1]+a[1]*e[2],s[2]*e[0]+n[2]*e[1]+a[2]*e[2]]),l}getAnimatedLatitude(){return t.lerp(this._mercatorTransform.center.lat,this._helper._center.lat,this._globeness)}getPixelScale(){return t.lerp(this._mercatorTransform.getPixelScale(),1/Math.cos(this.getAnimatedLatitude()*Math.PI/180),this._globeness)}getCircleRadiusCorrection(){return t.lerp(this._mercatorTransform.getCircleRadiusCorrection(),Math.cos(this.getAnimatedLatitude()*Math.PI/180),this._globeness)}getPitchedTextCorrection(e,i,r){const o=this._mercatorTransform.getPitchedTextCorrection(e,i,r);if(!this.isGlobeRendering)return o;const a=function(e,i,r){const o=1/(1<a&&(a=i),rn&&(n=r);}const h=[c.lng+s,c.lat+l,c.lng+a,c.lat+n];return this.isSurfacePointOnScreen([0,1,0])&&(h[3]=90,h[0]=-180,h[2]=180),this.isSurfacePointOnScreen([0,-1,0])&&(h[1]=-90,h[0]=-180,h[2]=180),new V(h)}getConstrained(e,i){const r=t.clamp(e.lat,-85.051129,ce),o=t.clamp(+i,this.minZoom+ai(0,r),this.maxZoom);return {center:new t.LngLat(e.lng,r),zoom:o}}calculateCenterFromCameraLngLatAlt(e,t,i,r){return this._mercatorTransform.calculateCenterFromCameraLngLatAlt(e,t,i,r)}setLocationAtPoint(e,i){if(!this.isGlobeRendering)return this._mercatorTransform.setLocationAtPoint(e,i),void this.apply(this._mercatorTransform);const r=ti(this.unprojectScreenPoint(i)),o=ti(e),a=t.createVec3f64();t.zero$1(a);const s=t.createVec3f64();t.rotateY(s,r,a,-this.center.lng*Math.PI/180),t.rotateX$1(s,s,a,this.center.lat*Math.PI/180);const n=o[0]*o[0]+o[2]*o[2],l=s[0]*s[0];if(n=-g&&p<=g,y=f>=-g&&f<=g;let x,b;if(v&&y){const e=this.center.lng*Math.PI/180,i=this.center.lat*Math.PI/180;t.distanceOfAnglesRadians(u,e)+t.distanceOfAnglesRadians(p,i)=0}isSurfacePointOnScreen(e){if(!this.isSurfacePointVisible(e))return !1;const i=t.createVec4f64();return t.transformMat4(i,[...e,1],this._globeViewProjMatrixNoCorrection),i[0]/=i[3],i[1]/=i[3],i[2]/=i[3],i[0]>-1&&i[0]<1&&i[1]>-1&&i[1]<1&&i[2]>-1&&i[2]<1}rayPlanetIntersection(e,i){const r=t.dot(e,i),o=t.createVec3f64(),a=t.createVec3f64();t.scale$2(a,i,r),t.sub(o,e,a);const s=1-t.dot(o,o);if(s<0)return null;const n=t.dot(e,e)-1,l=-r+(r<0?1:-1)*Math.sqrt(s),c=n/l,h=l;return {tMin:Math.min(c,h),tMax:Math.max(c,h)}}unprojectScreenPoint(e){const i=this._cameraPosition,r=this.getRayDirectionFromPixel(e),o=this.rayPlanetIntersection(i,r);if(o){const e=t.createVec3f64();t.add(e,i,[r[0]*o.tMin,r[1]*o.tMin,r[2]*o.tMin]);const a=t.createVec3f64();return t.normalize(a,e),ri(a)}const a=this._cachedClippingPlane[0]*r[0]+this._cachedClippingPlane[1]*r[1]+this._cachedClippingPlane[2]*r[2],s=-t.pointPlaneSignedDistance(this._cachedClippingPlane,i)/a,n=t.createVec3f64();if(s>0)t.add(n,i,[r[0]*s,r[1]*s,r[2]*s]);else {const e=t.createVec3f64();t.add(e,i,[2*r[0],2*r[1],2*r[2]]);const o=t.pointPlaneSignedDistance(this._cachedClippingPlane,e);t.sub(n,e,[this._cachedClippingPlane[0]*o,this._cachedClippingPlane[1]*o,this._cachedClippingPlane[2]*o]);}const l=t.createVec3f64();return t.normalize(l,n),ri(l)}getMatrixForModel(e,i){if(!this.isGlobeRendering)return this._mercatorTransform.getMatrixForModel(e,i);const r=t.LngLat.convert(e),o=1/t.earthRadius,a=t.createIdentityMat4f64();return t.rotateY$1(a,a,r.lng/180*Math.PI),t.rotateX(a,a,-r.lat/180*Math.PI),t.translate(a,a,[0,0,1+i/t.earthRadius]),t.rotateX(a,a,.5*Math.PI),t.scale(a,a,[o,o,o]),a}getProjectionDataForCustomLayer(e=!0){const i=this.getProjectionData({overscaledTileID:new t.OverscaledTileID(0,0,0,0,0),applyGlobeMatrix:e});i.tileMercatorCoords=[0,0,1,1];const r=t.createMat4f32();return t.scale(r,i.fallbackMatrix,[t.EXTENT,t.EXTENT,1]),i.fallbackMatrix=r,i}getFastPathSimpleProjectionMatrix(e){if(!this.isGlobeRendering)return this._mercatorTransform.getFastPathSimpleProjectionMatrix(e)}}class pi{constructor(e){this._globe=e,this._mercatorCameraHelper=new Ut;}get useGlobeControls(){return this._globe.useGlobeRendering}handlePanInertia(e,i){if(!this.useGlobeControls)return this._mercatorCameraHelper.handlePanInertia(e,i);const r=si(e,i);return Math.abs(r.lng-i.center.lng)>180&&(r.lng=i.center.lng+179.5*Math.sign(r.lng-i.center.lng)),{easingCenter:r,easingOffset:new t.Point(0,0)}}handleMapControlsRollPitchBearingZoom(e,i){if(!this.useGlobeControls)return void this._mercatorCameraHelper.handleMapControlsRollPitchBearingZoom(e,i);const r=e.around,o=i.screenPointToLocation(r);e.bearingDelta&&i.setBearing(i.bearing+e.bearingDelta),e.pitchDelta&&i.setPitch(i.pitch+e.pitchDelta),e.rollDelta&&i.setRoll(i.roll+e.rollDelta);const a=i.zoom;e.zoomDelta&&i.setZoom(i.zoom+e.zoomDelta);const s=i.zoom-a;if(0===s)return;const n=t.differenceOfAnglesDegrees(i.center.lng,o.lng),l=n/(Math.abs(n/180)+1),c=t.differenceOfAnglesDegrees(i.center.lat,o.lat),h=i.getRayDirectionFromPixel(r),u=i.cameraPosition,d=-1*t.dot(u,h),_=t.createVec3f64();t.add(_,u,[h[0]*d,h[1]*d,h[2]*d]);const p=t.length$1(_)-1,m=Math.exp(.5*-Math.max(p-.3,0)),f=ii(i.worldSize,i.center.lat)/Math.min(i.width,i.height),g=t.remapSaturate(f,.9,.5,1,.25),v=(1-ue(-s))*Math.min(m,g),y=i.center.lat,x=i.zoom,b=new t.LngLat(i.center.lng+l*v,t.clamp(i.center.lat+c*v,-85.051129,ce));i.setLocationAtPoint(o,r);const w=i.center,T=t.remapSaturate(Math.abs(n),45,85,0,1),E=t.remapSaturate(f,.75,.35,0,1),P=Math.pow(Math.max(T,E),.25),I=t.differenceOfAnglesDegrees(w.lng,b.lng),C=t.differenceOfAnglesDegrees(w.lat,b.lat);i.setCenter(new t.LngLat(w.lng+I*P,w.lat+C*P).wrap()),i.setZoom(x+ai(y,i.center.lat));}handleMapControlsPan(e,t,i){if(!this.useGlobeControls)return void this._mercatorCameraHelper.handleMapControlsPan(e,t,i);if(!e.panDelta)return;const r=t.center.lat,o=t.zoom;t.setCenter(si(e.panDelta,t).wrap()),t.setZoom(o+ai(r,t.center.lat));}cameraForBoxAndBearing(e,i,r,o,a){const s=this._mercatorCameraHelper.cameraForBoxAndBearing(e,i,r,o,a);if(!this.useGlobeControls)return s;const n=i.left/a.width*2-1,l=(a.width-i.right)/a.width*2-1,c=i.top/a.height*-2+1,h=(a.height-i.bottom)/a.height*-2+1,u=t.differenceOfAnglesDegrees(r.getWest(),r.getEast())<0,d=u?r.getEast():r.getWest(),_=u?r.getWest():r.getEast(),p=Math.max(r.getNorth(),r.getSouth()),m=Math.min(r.getNorth(),r.getSouth()),f=d+.5*t.differenceOfAnglesDegrees(d,_),g=p+.5*t.differenceOfAnglesDegrees(p,m),v=a.clone();v.setCenter(s.center),v.setBearing(s.bearing),v.setPitch(0),v.setRoll(0),v.setZoom(s.zoom);const y=v.modelViewProjectionMatrix,x=[ti(r.getNorthWest()),ti(r.getNorthEast()),ti(r.getSouthWest()),ti(r.getSouthEast()),ti(new t.LngLat(_,g)),ti(new t.LngLat(d,g)),ti(new t.LngLat(f,p)),ti(new t.LngLat(f,m))],b=ti(s.center);let w=Number.POSITIVE_INFINITY;for(const e of x)n<0&&(w=pi.getLesserNonNegativeNonNull(w,pi.solveVectorScale(e,b,y,"x",n))),l>0&&(w=pi.getLesserNonNegativeNonNull(w,pi.solveVectorScale(e,b,y,"x",l))),c>0&&(w=pi.getLesserNonNegativeNonNull(w,pi.solveVectorScale(e,b,y,"y",c))),h<0&&(w=pi.getLesserNonNegativeNonNull(w,pi.solveVectorScale(e,b,y,"y",h)));if(Number.isFinite(w)&&0!==w)return s.zoom=v.zoom+de(w),s;Bt();}handleJumpToCenterZoom(e,i){if(!this.useGlobeControls)return void this._mercatorCameraHelper.handleJumpToCenterZoom(e,i);const r=e.center.lat,o=e.getConstrained(i.center?t.LngLat.convert(i.center):e.center,e.zoom).center;e.setCenter(o.wrap());const a=void 0!==i.zoom?+i.zoom:e.zoom+ai(r,o.lat);e.zoom!==a&&e.setZoom(a);}handleEaseTo(e,i){if(!this.useGlobeControls)return this._mercatorCameraHelper.handleEaseTo(e,i);const r=e.zoom,o=e.center,a={roll:e.roll,pitch:e.pitch,bearing:e.bearing},s={roll:void 0===i.roll?e.roll:i.roll,pitch:void 0===i.pitch?e.pitch:i.pitch,bearing:void 0===i.bearing?e.bearing:i.bearing},n=void 0!==i.zoom,l=!e.isPaddingEqual(i.padding);let c=!1;const h=i.center?t.LngLat.convert(i.center):o,u=e.getConstrained(h,r).center;he(e,u);const d=e.clone();d.setCenter(u),l&&d.setPadding(i.padding),d.setZoom(n?+i.zoom:r+ai(o.lat,h.lat)),d.setBearing(i.bearing);const _=new t.Point(t.clamp(e.centerPoint.x+i.offsetAsPoint.x,0,e.width),t.clamp(e.centerPoint.y+i.offsetAsPoint.y,0,e.height));d.setLocationAtPoint(u,_);const p=(i.offset&&i.offsetAsPoint.mag())>0?d.center:u,m=n?+i.zoom:r+ai(o.lat,p.lat),f=r+ai(o.lat,0),g=m+ai(p.lat,0),v=t.differenceOfAnglesDegrees(o.lng,p.lng),y=t.differenceOfAnglesDegrees(o.lat,p.lat),x=ue(g-f);return c=m!==r,{easeFunc:r=>{if(t.rollPitchBearingEqual(a,s)||Ot({startEulerAngles:a,endEulerAngles:s,tr:e,k:r,useSlerp:a.roll!=s.roll}),i.around)t.warnOnce("Easing around a point is not supported under globe projection."),e.setLocationAtPoint(i.around,i.aroundPoint);else {const t=g>f?Math.min(2,x):Math.max(.5,x),i=Math.pow(t,1-r),a=li(o,v,y,r*i);e.setCenter(a.wrap());}if(c){const i=t.interpolateFactory.number(f,g,r)+ai(0,e.center.lat);e.setZoom(i);}},isZooming:c,elevationCenter:p}}handleFlyTo(e,i){if(!this.useGlobeControls)return this._mercatorCameraHelper.handleFlyTo(e,i);const r=void 0!==i.zoom,o=e.center,a=e.zoom,s=!e.isPaddingEqual(i.padding),n=e.getConstrained(t.LngLat.convert(i.center||i.locationAtOffset),a).center,l=r?+i.zoom:e.zoom+ai(e.center.lat,n.lat),c=e.clone();c.setCenter(n),s&&c.setPadding(i.padding),c.setZoom(l),c.setBearing(i.bearing);const h=new t.Point(t.clamp(e.centerPoint.x+i.offsetAsPoint.x,0,e.width),t.clamp(e.centerPoint.y+i.offsetAsPoint.y,0,e.height));c.setLocationAtPoint(n,h);const u=c.center;he(e,u);const d=function(e,i,r){const o=ti(i),a=ti(r),s=t.dot(o,a),n=Math.acos(s),l=Qt(e);return n/(2*Math.PI)*l}(e,o,u),_=a+ai(o.lat,0),p=l+ai(u.lat,0),m=ue(p-_);let f;if("number"==typeof i.minZoom){const t=+i.minZoom+ai(u.lat,0),r=Math.min(t,_,p)+ai(0,u.lat);f=ue(e.getConstrained(u,r).zoom+ai(u.lat,0)-_);}const g=t.differenceOfAnglesDegrees(o.lng,u.lng),v=t.differenceOfAnglesDegrees(o.lat,u.lat);return {easeFunc:(t,i,r,a)=>{const s=li(o,g,v,r),n=1===t?u:s;e.setCenter(n.wrap());const c=_+de(i);e.setZoom(1===t?l:c+ai(0,n.lat));},scaleOfZoom:m,targetCenter:u,scaleOfMinZoom:f,pixelPathLength:d}}static solveVectorScale(e,t,i,r,o){const a="x"===r?[i[0],i[4],i[8],i[12]]:[i[1],i[5],i[9],i[13]],s=[i[3],i[7],i[11],i[15]],n=e[0]*a[0]+e[1]*a[1]+e[2]*a[2],l=e[0]*s[0]+e[1]*s[1]+e[2]*s[2],c=t[0]*a[0]+t[1]*a[1]+t[2]*a[2],h=t[0]*s[0]+t[1]*s[1]+t[2]*s[2];return c+o*l===n+o*h||s[3]*(n-c)+a[3]*(h-l)+n*h==c*l?null:(c+a[3]-o*h-o*s[3])/(c-n-o*h+o*l)}static getLesserNonNegativeNonNull(e,t){return null!==t&&t>=0&&tt.emitValidationErrors(e,i&&i.filter((e=>"source.canvas"!==e.identifier))),fi=t.emptyStyle();class gi extends t.Evented{constructor(e,i={}){super(),this._rtlPluginLoaded=()=>{for(const e in this.sourceCaches){const t=this.sourceCaches[e].getSource().type;"vector"!==t&&"geojson"!==t||this.sourceCaches[e].reload();}},this.map=e,this.dispatcher=new O(B(),e._getMapId()),this.dispatcher.registerMessageHandler("GG",((e,t)=>this.getGlyphs(e,t))),this.dispatcher.registerMessageHandler("GI",((e,t)=>this.getImages(e,t))),this.imageManager=new b,this.imageManager.setEventedParent(this),this.glyphManager=new P(e._requestManager,i.localIdeographFontFamily),this.lineAtlas=new D(256,512),this.crossTileSymbolIndex=new gt,this._spritesImagesIds={},this._layers={},this._order=[],this.sourceCaches={},this.zoomHistory=new t.ZoomHistory,this._loaded=!1,this._availableImages=[],this._resetUpdates(),this.dispatcher.broadcast("SR",t.getReferrer()),oe().on(te,this._rtlPluginLoaded),this.on("data",(e=>{if("source"!==e.dataType||"metadata"!==e.sourceDataType)return;const t=this.sourceCaches[e.sourceId];if(!t)return;const i=t.getSource();if(i&&i.vectorLayerIds)for(const e in this._layers){const t=this._layers[e];t.source===i.id&&this._validateLayer(t);}}));}loadURL(e,i={},r){this.fire(new t.Event("dataloading",{dataType:"style"})),i.validate="boolean"!=typeof i.validate||i.validate;const o=this.map._requestManager.transformRequest(e,"Style");this._loadStyleRequest=new AbortController;const a=this._loadStyleRequest;t.getJSON(o,this._loadStyleRequest).then((e=>{this._loadStyleRequest=null,this._load(e.data,i,r);})).catch((e=>{this._loadStyleRequest=null,e&&!a.signal.aborted&&this.fire(new t.ErrorEvent(e));}));}loadJSON(e,i={},r){this.fire(new t.Event("dataloading",{dataType:"style"})),this._frameRequest=new AbortController,f.frameAsync(this._frameRequest).then((()=>{this._frameRequest=null,i.validate=!1!==i.validate,this._load(e,i,r);})).catch((()=>{}));}loadEmpty(){this.fire(new t.Event("dataloading",{dataType:"style"})),this._load(fi,{validate:!1});}_load(e,i,r){var o,a;const s=i.transformStyle?i.transformStyle(r,e):e;if(!i.validate||!mi(this,t.validateStyle(s))){this._loaded=!0,this.stylesheet=s;for(const e in s.sources)this.addSource(e,s.sources[e],{validate:!1});s.sprite?this._loadSprite(s.sprite):this.imageManager.setLoaded(!0),this.glyphManager.setURL(s.glyphs),this._createLayers(),this.light=new M(this.stylesheet.light),this._setProjectionInternal((null===(o=this.stylesheet.projection)||void 0===o?void 0:o.type)||"mercator"),this.sky=new R(this.stylesheet.sky),this.map.setTerrain(null!==(a=this.stylesheet.terrain)&&void 0!==a?a:null),this.fire(new t.Event("data",{dataType:"style"})),this.fire(new t.Event("style.load"));}}_createLayers(){const e=t.derefLayers(this.stylesheet.layers);this.dispatcher.broadcast("SL",e),this._order=e.map((e=>e.id)),this._layers={},this._serializedLayers=null;for(const i of e){const e=t.createStyleLayer(i);e.setEventedParent(this,{layer:{id:i.id}}),this._layers[i.id]=e;}}_loadSprite(e,i=!1,r=void 0){let o;this.imageManager.setLoaded(!1),this._spriteRequest=new AbortController,function(e,i,r,o){return t.__awaiter(this,void 0,void 0,(function*(){const a=g(e),s=r>1?"@2x":"",n={},l={};for(const{id:e,url:r}of a){const a=i.transformRequest(v(r,s,".json"),"SpriteJSON");n[e]=t.getJSON(a,o);const c=i.transformRequest(v(r,s,".png"),"SpriteImage");l[e]=_.getImage(c,o);}return yield Promise.all([...Object.values(n),...Object.values(l)]),function(e,i){return t.__awaiter(this,void 0,void 0,(function*(){const t={};for(const r in e){t[r]={};const o=f.getImageCanvasContext((yield i[r]).data),a=(yield e[r]).data;for(const e in a){const{width:i,height:s,x:n,y:l,sdf:c,pixelRatio:h,stretchX:u,stretchY:d,content:_,textFitWidth:p,textFitHeight:m}=a[e];t[r][e]={data:null,pixelRatio:h,sdf:c,stretchX:u,stretchY:d,content:_,textFitWidth:p,textFitHeight:m,spriteData:{width:i,height:s,x:n,y:l,context:o}};}}return t}))}(n,l)}))}(e,this.map._requestManager,this.map.getPixelRatio(),this._spriteRequest).then((e=>{if(this._spriteRequest=null,e)for(const t in e){this._spritesImagesIds[t]=[];const r=this._spritesImagesIds[t]?this._spritesImagesIds[t].filter((t=>!(t in e))):[];for(const e of r)this.imageManager.removeImage(e),this._changedImages[e]=!0;for(const r in e[t]){const o="default"===t?r:`${t}:${r}`;this._spritesImagesIds[t].push(o),o in this.imageManager.images?this.imageManager.updateImage(o,e[t][r],!1):this.imageManager.addImage(o,e[t][r]),i&&(this._changedImages[o]=!0);}}})).catch((e=>{this._spriteRequest=null,o=e,this.fire(new t.ErrorEvent(o));})).finally((()=>{this.imageManager.setLoaded(!0),this._availableImages=this.imageManager.listImages(),i&&(this._changed=!0),this.dispatcher.broadcast("SI",this._availableImages),this.fire(new t.Event("data",{dataType:"style"})),r&&r(o);}));}_unloadSprite(){for(const e of Object.values(this._spritesImagesIds).flat())this.imageManager.removeImage(e),this._changedImages[e]=!0;this._spritesImagesIds={},this._availableImages=this.imageManager.listImages(),this._changed=!0,this.dispatcher.broadcast("SI",this._availableImages),this.fire(new t.Event("data",{dataType:"style"}));}_validateLayer(e){const i=this.sourceCaches[e.source];if(!i)return;const r=e.sourceLayer;if(!r)return;const o=i.getSource();("geojson"===o.type||o.vectorLayerIds&&-1===o.vectorLayerIds.indexOf(r))&&this.fire(new t.ErrorEvent(new Error(`Source layer "${r}" does not exist on source "${o.id}" as specified by style layer "${e.id}".`)));}loaded(){if(!this._loaded)return !1;if(Object.keys(this._updatedSources).length)return !1;for(const e in this.sourceCaches)if(!this.sourceCaches[e].loaded())return !1;return !!this.imageManager.isLoaded()}_serializeByIds(e,i=!1){const r=this._serializedAllLayers();if(!e||0===e.length)return Object.values(i?t.clone$2(r):r);const o=[];for(const a of e)if(r[a]){const e=i?t.clone$2(r[a]):r[a];o.push(e);}return o}_serializedAllLayers(){let e=this._serializedLayers;if(e)return e;e=this._serializedLayers={};const t=Object.keys(this._layers);for(const i of t){const t=this._layers[i];"custom"!==t.type&&(e[i]=t.serialize());}return e}hasTransitions(){if(this.light&&this.light.hasTransition())return !0;if(this.sky&&this.sky.hasTransition())return !0;for(const e in this.sourceCaches)if(this.sourceCaches[e].hasTransition())return !0;for(const e in this._layers)if(this._layers[e].hasTransition())return !0;return !1}_checkLoaded(){if(!this._loaded)throw new Error("Style is not done loading.")}update(e){if(!this._loaded)return;const i=this._changed;if(i){const t=Object.keys(this._updatedLayers),i=Object.keys(this._removedLayers);(t.length||i.length)&&this._updateWorkerLayers(t,i);for(const e in this._updatedSources){const t=this._updatedSources[e];if("reload"===t)this._reloadSource(e);else {if("clear"!==t)throw new Error(`Invalid action ${t}`);this._clearSource(e);}}this._updateTilesForChangedImages(),this._updateTilesForChangedGlyphs();for(const t in this._updatedPaintProps)this._layers[t].updateTransitions(e);this.light.updateTransitions(e),this.sky.updateTransitions(e),this._resetUpdates();}const r={};for(const e in this.sourceCaches){const t=this.sourceCaches[e];r[e]=t.used,t.used=!1;}for(const t of this._order){const i=this._layers[t];i.recalculate(e,this._availableImages),!i.isHidden(e.zoom)&&i.source&&(this.sourceCaches[i.source].used=!0);}for(const e in r){const i=this.sourceCaches[e];!!r[e]!=!!i.used&&i.fire(new t.Event("data",{sourceDataType:"visibility",dataType:"source",sourceId:e}));}this.light.recalculate(e),this.sky.recalculate(e),this.z=e.zoom,i&&this.fire(new t.Event("data",{dataType:"style"}));}_updateTilesForChangedImages(){const e=Object.keys(this._changedImages);if(e.length){for(const t in this.sourceCaches)this.sourceCaches[t].reloadTilesForDependencies(["icons","patterns"],e);this._changedImages={};}}_updateTilesForChangedGlyphs(){if(this._glyphsDidChange){for(const e in this.sourceCaches)this.sourceCaches[e].reloadTilesForDependencies(["glyphs"],[""]);this._glyphsDidChange=!1;}}_updateWorkerLayers(e,t){this.dispatcher.broadcast("UL",{layers:this._serializeByIds(e,!1),removedIds:t});}_resetUpdates(){this._changed=!1,this._updatedLayers={},this._removedLayers={},this._updatedSources={},this._updatedPaintProps={},this._changedImages={},this._glyphsDidChange=!1;}setState(e,i={}){var r;this._checkLoaded();const o=this.serialize();if(e=i.transformStyle?i.transformStyle(o,e):e,(null===(r=i.validate)||void 0===r||r)&&mi(this,t.validateStyle(e)))return !1;(e=t.clone$2(e)).layers=t.derefLayers(e.layers);const a=t.diff(o,e),s=this._getOperationsToPerform(a);if(s.unimplemented.length>0)throw new Error(`Unimplemented: ${s.unimplemented.join(", ")}.`);if(0===s.operations.length)return !1;for(const e of s.operations)e();return this.stylesheet=e,this._serializedLayers=null,!0}_getOperationsToPerform(e){const t=[],i=[];for(const r of e)switch(r.command){case"setCenter":case"setZoom":case"setBearing":case"setPitch":case"setRoll":continue;case"addLayer":t.push((()=>this.addLayer.apply(this,r.args)));break;case"removeLayer":t.push((()=>this.removeLayer.apply(this,r.args)));break;case"setPaintProperty":t.push((()=>this.setPaintProperty.apply(this,r.args)));break;case"setLayoutProperty":t.push((()=>this.setLayoutProperty.apply(this,r.args)));break;case"setFilter":t.push((()=>this.setFilter.apply(this,r.args)));break;case"addSource":t.push((()=>this.addSource.apply(this,r.args)));break;case"removeSource":t.push((()=>this.removeSource.apply(this,r.args)));break;case"setLayerZoomRange":t.push((()=>this.setLayerZoomRange.apply(this,r.args)));break;case"setLight":t.push((()=>this.setLight.apply(this,r.args)));break;case"setGeoJSONSourceData":t.push((()=>this.setGeoJSONSourceData.apply(this,r.args)));break;case"setGlyphs":t.push((()=>this.setGlyphs.apply(this,r.args)));break;case"setSprite":t.push((()=>this.setSprite.apply(this,r.args)));break;case"setTerrain":t.push((()=>this.map.setTerrain.apply(this,r.args)));break;case"setSky":t.push((()=>this.setSky.apply(this,r.args)));break;case"setProjection":this.setProjection.apply(this,r.args);break;case"setTransition":t.push((()=>{}));break;default:i.push(r.command);}return {operations:t,unimplemented:i}}addImage(e,i){if(this.getImage(e))return this.fire(new t.ErrorEvent(new Error(`An image named "${e}" already exists.`)));this.imageManager.addImage(e,i),this._afterImageUpdated(e);}updateImage(e,t){this.imageManager.updateImage(e,t);}getImage(e){return this.imageManager.getImage(e)}removeImage(e){if(!this.getImage(e))return this.fire(new t.ErrorEvent(new Error(`An image named "${e}" does not exist.`)));this.imageManager.removeImage(e),this._afterImageUpdated(e);}_afterImageUpdated(e){this._availableImages=this.imageManager.listImages(),this._changedImages[e]=!0,this._changed=!0,this.dispatcher.broadcast("SI",this._availableImages),this.fire(new t.Event("data",{dataType:"style"}));}listImages(){return this._checkLoaded(),this.imageManager.listImages()}addSource(e,i,r={}){if(this._checkLoaded(),void 0!==this.sourceCaches[e])throw new Error(`Source "${e}" already exists.`);if(!i.type)throw new Error(`The type property must be defined, but only the following properties were given: ${Object.keys(i).join(", ")}.`);if(["vector","raster","geojson","video","image"].indexOf(i.type)>=0&&this._validate(t.validateStyle.source,`sources.${e}`,i,null,r))return;this.map&&this.map._collectResourceTiming&&(i.collectResourceTiming=!0);const o=this.sourceCaches[e]=new ye(e,i,this.dispatcher);o.style=this,o.setEventedParent(this,(()=>({isSourceLoaded:o.loaded(),source:o.serialize(),sourceId:e}))),o.onAdd(this.map),this._changed=!0;}removeSource(e){if(this._checkLoaded(),void 0===this.sourceCaches[e])throw new Error("There is no source with this ID");for(const i in this._layers)if(this._layers[i].source===e)return this.fire(new t.ErrorEvent(new Error(`Source "${e}" cannot be removed while layer "${i}" is using it.`)));const i=this.sourceCaches[e];delete this.sourceCaches[e],delete this._updatedSources[e],i.fire(new t.Event("data",{sourceDataType:"metadata",dataType:"source",sourceId:e})),i.setEventedParent(null),i.onRemove(this.map),this._changed=!0;}setGeoJSONSourceData(e,t){if(this._checkLoaded(),void 0===this.sourceCaches[e])throw new Error(`There is no source with this ID=${e}`);const i=this.sourceCaches[e].getSource();if("geojson"!==i.type)throw new Error(`geojsonSource.type is ${i.type}, which is !== 'geojson`);i.setData(t),this._changed=!0;}getSource(e){return this.sourceCaches[e]&&this.sourceCaches[e].getSource()}addLayer(e,i,r={}){this._checkLoaded();const o=e.id;if(this.getLayer(o))return void this.fire(new t.ErrorEvent(new Error(`Layer "${o}" already exists on this map.`)));let a;if("custom"===e.type){if(mi(this,t.validateCustomStyleLayer(e)))return;a=t.createStyleLayer(e);}else {if("source"in e&&"object"==typeof e.source&&(this.addSource(o,e.source),e=t.clone$2(e),e=t.extend(e,{source:o})),this._validate(t.validateStyle.layer,`layers.${o}`,e,{arrayIndex:-1},r))return;a=t.createStyleLayer(e),this._validateLayer(a),a.setEventedParent(this,{layer:{id:o}});}const s=i?this._order.indexOf(i):this._order.length;if(i&&-1===s)this.fire(new t.ErrorEvent(new Error(`Cannot add layer "${o}" before non-existing layer "${i}".`)));else {if(this._order.splice(s,0,o),this._layerOrderChanged=!0,this._layers[o]=a,this._removedLayers[o]&&a.source&&"custom"!==a.type){const e=this._removedLayers[o];delete this._removedLayers[o],e.type!==a.type?this._updatedSources[a.source]="clear":(this._updatedSources[a.source]="reload",this.sourceCaches[a.source].pause());}this._updateLayer(a),a.onAdd&&a.onAdd(this.map);}}moveLayer(e,i){if(this._checkLoaded(),this._changed=!0,!this._layers[e])return void this.fire(new t.ErrorEvent(new Error(`The layer '${e}' does not exist in the map's style and cannot be moved.`)));if(e===i)return;const r=this._order.indexOf(e);this._order.splice(r,1);const o=i?this._order.indexOf(i):this._order.length;i&&-1===o?this.fire(new t.ErrorEvent(new Error(`Cannot move layer "${e}" before non-existing layer "${i}".`))):(this._order.splice(o,0,e),this._layerOrderChanged=!0);}removeLayer(e){this._checkLoaded();const i=this._layers[e];if(!i)return void this.fire(new t.ErrorEvent(new Error(`Cannot remove non-existing layer "${e}".`)));i.setEventedParent(null);const r=this._order.indexOf(e);this._order.splice(r,1),this._layerOrderChanged=!0,this._changed=!0,this._removedLayers[e]=i,delete this._layers[e],this._serializedLayers&&delete this._serializedLayers[e],delete this._updatedLayers[e],delete this._updatedPaintProps[e],i.onRemove&&i.onRemove(this.map);}getLayer(e){return this._layers[e]}getLayersOrder(){return [...this._order]}hasLayer(e){return e in this._layers}setLayerZoomRange(e,i,r){this._checkLoaded();const o=this.getLayer(e);o?o.minzoom===i&&o.maxzoom===r||(null!=i&&(o.minzoom=i),null!=r&&(o.maxzoom=r),this._updateLayer(o)):this.fire(new t.ErrorEvent(new Error(`Cannot set the zoom range of non-existing layer "${e}".`)));}setFilter(e,i,r={}){this._checkLoaded();const o=this.getLayer(e);if(o){if(!t.deepEqual(o.filter,i))return null==i?(o.filter=void 0,void this._updateLayer(o)):void(this._validate(t.validateStyle.filter,`layers.${o.id}.filter`,i,null,r)||(o.filter=t.clone$2(i),this._updateLayer(o)))}else this.fire(new t.ErrorEvent(new Error(`Cannot filter non-existing layer "${e}".`)));}getFilter(e){return t.clone$2(this.getLayer(e).filter)}setLayoutProperty(e,i,r,o={}){this._checkLoaded();const a=this.getLayer(e);a?t.deepEqual(a.getLayoutProperty(i),r)||(a.setLayoutProperty(i,r,o),this._updateLayer(a)):this.fire(new t.ErrorEvent(new Error(`Cannot style non-existing layer "${e}".`)));}getLayoutProperty(e,i){const r=this.getLayer(e);if(r)return r.getLayoutProperty(i);this.fire(new t.ErrorEvent(new Error(`Cannot get style of non-existing layer "${e}".`)));}setPaintProperty(e,i,r,o={}){this._checkLoaded();const a=this.getLayer(e);a?t.deepEqual(a.getPaintProperty(i),r)||(a.setPaintProperty(i,r,o)&&this._updateLayer(a),this._changed=!0,this._updatedPaintProps[e]=!0,this._serializedLayers=null):this.fire(new t.ErrorEvent(new Error(`Cannot style non-existing layer "${e}".`)));}getPaintProperty(e,t){return this.getLayer(e).getPaintProperty(t)}setFeatureState(e,i){this._checkLoaded();const r=e.source,o=e.sourceLayer,a=this.sourceCaches[r];if(void 0===a)return void this.fire(new t.ErrorEvent(new Error(`The source '${r}' does not exist in the map's style.`)));const s=a.getSource().type;"geojson"===s&&o?this.fire(new t.ErrorEvent(new Error("GeoJSON sources cannot have a sourceLayer parameter."))):"vector"!==s||o?(void 0===e.id&&this.fire(new t.ErrorEvent(new Error("The feature id parameter must be provided."))),a.setFeatureState(o,e.id,i)):this.fire(new t.ErrorEvent(new Error("The sourceLayer parameter must be provided for vector source types.")));}removeFeatureState(e,i){this._checkLoaded();const r=e.source,o=this.sourceCaches[r];if(void 0===o)return void this.fire(new t.ErrorEvent(new Error(`The source '${r}' does not exist in the map's style.`)));const a=o.getSource().type,s="vector"===a?e.sourceLayer:void 0;"vector"!==a||s?i&&"string"!=typeof e.id&&"number"!=typeof e.id?this.fire(new t.ErrorEvent(new Error("A feature id is required to remove its specific state property."))):o.removeFeatureState(s,e.id,i):this.fire(new t.ErrorEvent(new Error("The sourceLayer parameter must be provided for vector source types.")));}getFeatureState(e){this._checkLoaded();const i=e.source,r=e.sourceLayer,o=this.sourceCaches[i];if(void 0!==o)return "vector"!==o.getSource().type||r?(void 0===e.id&&this.fire(new t.ErrorEvent(new Error("The feature id parameter must be provided."))),o.getFeatureState(r,e.id)):void this.fire(new t.ErrorEvent(new Error("The sourceLayer parameter must be provided for vector source types.")));this.fire(new t.ErrorEvent(new Error(`The source '${i}' does not exist in the map's style.`)));}getTransition(){return t.extend({duration:300,delay:0},this.stylesheet&&this.stylesheet.transition)}serialize(){if(!this._loaded)return;const e=t.mapObject(this.sourceCaches,(e=>e.serialize())),i=this._serializeByIds(this._order,!0),r=this.map.getTerrain()||void 0,o=this.stylesheet;return t.filterObject({version:o.version,name:o.name,metadata:o.metadata,light:o.light,sky:o.sky,center:o.center,zoom:o.zoom,bearing:o.bearing,pitch:o.pitch,sprite:o.sprite,glyphs:o.glyphs,transition:o.transition,projection:o.projection,sources:e,layers:i,terrain:r},(e=>void 0!==e))}_updateLayer(e){this._updatedLayers[e.id]=!0,e.source&&!this._updatedSources[e.source]&&"raster"!==this.sourceCaches[e.source].getSource().type&&(this._updatedSources[e.source]="reload",this.sourceCaches[e.source].pause()),this._serializedLayers=null,this._changed=!0;}_flattenAndSortRenderedFeatures(e){const t=e=>"fill-extrusion"===this._layers[e].type,i={},r=[];for(let o=this._order.length-1;o>=0;o--){const a=this._order[o];if(t(a)){i[a]=o;for(const t of e){const e=t[a];if(e)for(const t of e)r.push(t);}}}r.sort(((e,t)=>t.intersectionZ-e.intersectionZ));const o=[];for(let a=this._order.length-1;a>=0;a--){const s=this._order[a];if(t(s))for(let e=r.length-1;e>=0;e--){const t=r[e].feature;if(i[t.layer.id]{const r=i.featureSortOrder;if(r){const i=r.indexOf(e.featureIndex);return r.indexOf(t.featureIndex)-i}return t.featureIndex-e.featureIndex}));for(const e of o)t.push(e);}}for(const t in n)n[t].forEach((r=>{const o=r.feature,a=i[e[t].source].getFeatureState(o.layer["source-layer"],o.id);o.source=o.layer.source,o.layer["source-layer"]&&(o.sourceLayer=o.layer["source-layer"]),o.state=a;}));return n}(this._layers,s,this.sourceCaches,e,l,this.placement.collisionIndex,this.placement.retainedQueryData)),this._flattenAndSortRenderedFeatures(a)}querySourceFeatures(e,i){i&&i.filter&&this._validate(t.validateStyle.filter,"querySourceFeatures.filter",i.filter,null,i);const r=this.sourceCaches[e];return r?function(e,t){const i=e.getRenderableIds().map((t=>e.getTileByID(t))),r=[],o={};for(let e=0;ee.getTileByID(t))).sort(((e,t)=>t.tileID.overscaledZ-e.tileID.overscaledZ||(e.tileID.isLessThan(t.tileID)?-1:1)));}const r=this.crossTileSymbolIndex.addLayer(i,n[i.source],e.center.lng);a=a||r;}if(this.crossTileSymbolIndex.pruneUnusedLayers(this._order),((o=o||this._layerOrderChanged||0===i)||!this.pauseablePlacement||this.pauseablePlacement.isDone()&&!this.placement.stillRecent(f.now(),e.zoom))&&(this.pauseablePlacement=new dt(e,this.map.terrain,this._order,o,t,i,r,this.placement),this._layerOrderChanged=!1),this.pauseablePlacement.isDone()?this.placement.setStale():(this.pauseablePlacement.continuePlacement(this._order,this._layers,n),this.pauseablePlacement.isDone()&&(this.placement=this.pauseablePlacement.commit(f.now()),s=!0),a&&this.pauseablePlacement.placement.setStale()),s||a)for(const e of this._order){const t=this._layers[e];"symbol"===t.type&&this.placement.updateLayerOpacities(t,n[t.source]);}return !this.pauseablePlacement.isDone()||this.placement.hasTransitions(f.now())}_releaseSymbolFadeTiles(){for(const e in this.sourceCaches)this.sourceCaches[e].releaseSymbolFadeTiles();}getImages(e,i){return t.__awaiter(this,void 0,void 0,(function*(){const e=yield this.imageManager.getImages(i.icons);this._updateTilesForChangedImages();const t=this.sourceCaches[i.source];return t&&t.setDependencies(i.tileID.key,i.type,i.icons),e}))}getGlyphs(e,i){return t.__awaiter(this,void 0,void 0,(function*(){const e=yield this.glyphManager.getGlyphs(i.stacks),t=this.sourceCaches[i.source];return t&&t.setDependencies(i.tileID.key,i.type,[""]),e}))}getGlyphsUrl(){return this.stylesheet.glyphs||null}setGlyphs(e,i={}){this._checkLoaded(),e&&this._validate(t.validateStyle.glyphs,"glyphs",e,null,i)||(this._glyphsDidChange=!0,this.stylesheet.glyphs=e,this.glyphManager.entries={},this.glyphManager.setURL(e));}addSprite(e,i,r={},o){this._checkLoaded();const a=[{id:e,url:i}],s=[...g(this.stylesheet.sprite),...a];this._validate(t.validateStyle.sprite,"sprite",s,null,r)||(this.stylesheet.sprite=s,this._loadSprite(a,!0,o));}removeSprite(e){this._checkLoaded();const i=g(this.stylesheet.sprite);if(i.find((t=>t.id===e))){if(this._spritesImagesIds[e])for(const t of this._spritesImagesIds[e])this.imageManager.removeImage(t),this._changedImages[t]=!0;i.splice(i.findIndex((t=>t.id===e)),1),this.stylesheet.sprite=i.length>0?i:void 0,delete this._spritesImagesIds[e],this._availableImages=this.imageManager.listImages(),this._changed=!0,this.dispatcher.broadcast("SI",this._availableImages),this.fire(new t.Event("data",{dataType:"style"}));}else this.fire(new t.ErrorEvent(new Error(`Sprite "${e}" doesn't exists on this map.`)));}getSprite(){return g(this.stylesheet.sprite)}setSprite(e,i={},r){this._checkLoaded(),e&&this._validate(t.validateStyle.sprite,"sprite",e,null,i)||(this.stylesheet.sprite=e,e?this._loadSprite(e,!0,r):(this._unloadSprite(),r&&r(null)));}}class vi{constructor(e){this._transformRequestFn=e;}transformRequest(e,t){return this._transformRequestFn&&this._transformRequestFn(e,t)||{url:e}}setTransformRequest(e){this._transformRequestFn=e;}}class yi extends t.Evented{constructor(){super(),this._requestManager=new vi,this.transform=new Ft;}getPixelRatio(){return devicePixelRatio}setTerrain(){}_getMapId(){return 1}}class xi{constructor(e,i){this.styleJSON=e,this.sourceID=i,this.layerIndex=new t.StyleLayerIndex(t.derefLayers(this.styleJSON.layers)),this.glyphs={},this.icons={};}loadImages(e){return t.__awaiter(this,void 0,void 0,(function*(){const t=JSON.stringify(e);return this.icons[t]||(this.icons[t]=yield this.style.getImages("",e)),this.icons[t]}))}loadGlyphs(e){return t.__awaiter(this,void 0,void 0,(function*(){const t=JSON.stringify(e);return this.glyphs[t]||(this.glyphs[t]=yield this.style.getGlyphs("",e)),this.glyphs[t]}))}setup(){const e=this;return this.actor={sendAsync(t){if("GI"===t.type)return e.loadImages(t.data);if("GG"===t.type)return e.loadGlyphs(t.data);throw new Error(`Invalid action ${t.type}`)}},Promise.all([(t=this.styleJSON,new Promise(((e,i)=>{const r=new yi,o=new gi(r);r.style=o,o.loadJSON(t),o.on("style.load",(()=>e(o))),o.on("error",i);}))),fetch(this.styleJSON.sources[this.sourceID].url).then((e=>e.json()))]).then((([e,t])=>{this.style=e,this.tileJSON=t;}));var t;}fetchTile(e){return fetch(e.canonical.url(this.tileJSON.tiles,devicePixelRatio)).then((e=>e.arrayBuffer())).then((t=>({tileID:e,buffer:t})))}parseTile(e,i){const r=new t.WorkerTile({type:"benchmark",tileID:e.tileID,zoom:e.tileID.overscaledZ,tileSize:512,showCollisionBoxes:!1,source:this.sourceID,uid:"0",maxZoom:22,pixelRatio:1,request:{url:""},returnDependencies:i,promoteId:void 0,subdivisionGranularity:t.SubdivisionGranularitySetting.noSubdivision}),o=new t.mvt.VectorTile(new t.Protobuf(e.buffer));return r.parse(o,this.layerIndex,[],this.actor,t.SubdivisionGranularitySetting.noSubdivision)}}class bi extends a{constructor(e,i){super(),this.style=e,this.tileIDs=i||[new t.OverscaledTileID(12,0,12,655,1583),new t.OverscaledTileID(8,0,8,40,98),new t.OverscaledTileID(4,0,4,3,6),new t.OverscaledTileID(0,0,0,0,0)];}setup(){return t.__awaiter(this,void 0,void 0,(function*(){const e=yield s(this.style);this.parser=new xi(e,"openmaptiles"),yield this.parser.setup(),this.tiles=yield Promise.all(this.tileIDs.map((e=>this.parser.fetchTile(e)))),yield Promise.all(this.tiles.map((e=>this.parser.parseTile(e))));}))}bench(){return t.__awaiter(this,void 0,void 0,(function*(){for(const e of this.tiles)yield this.parser.parseTile(e);}))}}class wi{static testProp(e){if(!wi.docStyle)return e[0];for(let t=0;t{window.removeEventListener("click",wi.suppressClickInternal,!0);}),0);}static getScale(e){const t=e.getBoundingClientRect();return {x:t.width/e.offsetWidth||1,y:t.height/e.offsetHeight||1,boundingClientRect:t}}static getPoint(e,i,r){const o=i.boundingClientRect;return new t.Point((r.clientX-o.left)/i.x-e.clientLeft,(r.clientY-o.top)/i.y-e.clientTop)}static mousePos(e,t){const i=wi.getScale(e);return wi.getPoint(e,i,t)}static touchPos(e,t){const i=[],r=wi.getScale(e);for(let o=0;o({u_texture:0,u_ele_delta:e,u_fog_matrix:i,u_fog_color:r?r.properties.get("fog-color"):t.Color.white,u_fog_ground_blend:r?r.properties.get("fog-ground-blend"):1,u_fog_ground_blend_opacity:a?0:r?r.calculateFogBlendOpacity(o):0,u_horizon_color:r?r.properties.get("horizon-color"):t.Color.white,u_horizon_fog_blend:r?r.properties.get("horizon-fog-blend"):1,u_is_globe_mode:a?1:0}),Ci={mainMatrix:"u_projection_matrix",tileMercatorCoords:"u_projection_tile_mercator_coords",clippingPlane:"u_projection_clipping_plane",projectionTransition:"u_projection_transition",fallbackMatrix:"u_projection_fallback_matrix"};function Mi(e){const t=[];for(let i=0;i({u_depth:new t.Uniform1i(e,i.u_depth),u_terrain:new t.Uniform1i(e,i.u_terrain),u_terrain_dim:new t.Uniform1f(e,i.u_terrain_dim),u_terrain_matrix:new t.UniformMatrix4f(e,i.u_terrain_matrix),u_terrain_unpack:new t.Uniform4f(e,i.u_terrain_unpack),u_terrain_exaggeration:new t.Uniform1f(e,i.u_terrain_exaggeration)}))(e,E),this.projectionUniforms=((e,i)=>({u_projection_matrix:new t.UniformMatrix4f(e,i.u_projection_matrix),u_projection_tile_mercator_coords:new t.Uniform4f(e,i.u_projection_tile_mercator_coords),u_projection_clipping_plane:new t.Uniform4f(e,i.u_projection_clipping_plane),u_projection_transition:new t.Uniform1f(e,i.u_projection_transition),u_projection_fallback_matrix:new t.UniformMatrix4f(e,i.u_projection_fallback_matrix)}))(e,E),this.binderUniforms=r?r.getUniforms(e,E):[];}draw(e,t,i,r,o,a,s,n,l,c,h,u,d,_,p,m,f,g,v){const y=e.gl;if(this.failedToCreate)return;if(e.program.set(this.program),e.setDepthMode(i),e.setStencilMode(r),e.setColorMode(o),e.setCullFace(a),n){e.activeTexture.set(y.TEXTURE2),y.bindTexture(y.TEXTURE_2D,n.depthTexture),e.activeTexture.set(y.TEXTURE3),y.bindTexture(y.TEXTURE_2D,n.texture);for(const e in this.terrainUniforms)this.terrainUniforms[e].set(n[e]);}if(l)for(const e in l)this.projectionUniforms[Ci[e]].set(l[e]);if(s)for(const e in this.fixedUniforms)this.fixedUniforms[e].set(s[e]);m&&m.setUniforms(e,this.binderUniforms,_,{zoom:p});let x=0;switch(t){case y.LINES:x=2;break;case y.TRIANGLES:x=3;break;case y.LINE_STRIP:x=1;}for(const i of d.get()){const r=i.vaos||(i.vaos={});(r[c]||(r[c]=new Pi)).bind(e,this,h,m?m.getPaintVertexBuffers():[],u,i.vertexOffset,f,g,v),y.drawElements(t,i.primitiveLength*x,y.UNSIGNED_SHORT,i.primitiveOffset*x*2);}}}function Ri(e,i,r){const o=1/t.pixelsToTileUnits(r,1,i.transform.tileZoom),a=Math.pow(2,r.tileID.overscaledZ),s=r.tileSize*Math.pow(2,i.transform.tileZoom)/a,n=s*(r.tileID.canonical.x+r.tileID.wrap*a),l=s*r.tileID.canonical.y;return {u_image:0,u_texsize:r.imageAtlasTexture.size,u_scale:[o,e.fromScale,e.toScale],u_fade:e.t,u_pixel_coord_upper:[n>>16,l>>16],u_pixel_coord_lower:[65535&n,65535&l]}}const Di=(e,i,r,o)=>{const a=e.style.light,s=a.properties.get("position"),n=[s.x,s.y,s.z],l=t.create$2();"viewport"===a.properties.get("anchor")&&t.fromRotation(l,e.transform.bearingInRadians),t.transformMat3(n,n,l);const c=e.transform.transformLightDirection(n),h=a.properties.get("color");return {u_lightpos:n,u_lightpos_globe:c,u_lightintensity:a.properties.get("intensity"),u_lightcolor:[h.r,h.g,h.b],u_vertical_gradient:+i,u_opacity:r,u_fill_translate:o}},zi=(e,i,r,o,a,s,n)=>t.extend(Di(e,i,r,o),Ri(s,e,n),{u_height_factor:-Math.pow(2,a.overscaledZ)/n.tileSize/8}),Li=(e,i,r,o)=>t.extend(Ri(i,e,r),{u_fill_translate:o}),Ai=(e,t)=>({u_world:e,u_fill_translate:t}),ki=(e,i,r,o,a)=>t.extend(Li(e,i,r,a),{u_world:o}),Fi=(e,i,r,o,a)=>{const s=e.transform;let n,l,c=0;if("map"===r.paint.get("circle-pitch-alignment")){const e=t.pixelsToTileUnits(i,1,s.zoom);n=!0,l=[e,e],c=e/(t.EXTENT*Math.pow(2,i.tileID.overscaledZ))*2*Math.PI*a;}else n=!1,l=s.pixelsToGLUnits;return {u_camera_to_center_distance:s.cameraToCenterDistance,u_scale_with_map:+("map"===r.paint.get("circle-pitch-scale")),u_pitch_with_map:+n,u_device_pixel_ratio:e.pixelRatio,u_extrude_scale:l,u_globe_extrude_scale:c,u_translate:o}},Bi=e=>({u_pixel_extrude_scale:[1/e.width,1/e.height]}),Oi=e=>({u_viewport_size:[e.width,e.height]}),Ui=(e,t=1)=>({u_color:e,u_overlay:0,u_overlay_scale:t}),ji=(e,i,r,o)=>{const a=t.pixelsToTileUnits(e,1,i)/(t.EXTENT*Math.pow(2,e.tileID.overscaledZ))*2*Math.PI*o;return {u_extrude_scale:t.pixelsToTileUnits(e,1,i),u_intensity:r,u_globe_extrude_scale:a}},Ni=(e,i,r,o)=>{const a=t.create();t.ortho(a,0,e.width,e.height,0,0,1);const s=e.context.gl;return {u_matrix:a,u_world:[s.drawingBufferWidth,s.drawingBufferHeight],u_image:r,u_color_ramp:o,u_opacity:i.paint.get("heatmap-opacity")}},Gi=(e,t,i)=>{const r=i.paint.get("hillshade-shadow-color"),o=i.paint.get("hillshade-highlight-color"),a=i.paint.get("hillshade-accent-color");let s=i.paint.get("hillshade-illumination-direction")*(Math.PI/180);return "viewport"===i.paint.get("hillshade-illumination-anchor")&&(s+=e.transform.bearingInRadians),{u_image:0,u_latrange:Vi(0,t.tileID),u_light:[i.paint.get("hillshade-exaggeration"),s],u_shadow:r,u_highlight:o,u_accent:a}},Zi=(e,i)=>{const r=i.stride,o=t.create();return t.ortho(o,0,t.EXTENT,-t.EXTENT,0,0,1),t.translate(o,o,[0,-t.EXTENT,0]),{u_matrix:o,u_image:1,u_dimension:[r,r],u_zoom:e.overscaledZ,u_unpack:i.getUnpackVector()}};function Vi(e,i){const r=Math.pow(2,i.canonical.z),o=i.canonical.y;return [new t.MercatorCoordinate(0,o/r).toLngLat().lat,new t.MercatorCoordinate(0,(o+1)/r).toLngLat().lat]}const qi=(e,i,r,o)=>{const a=e.transform;return {u_translation:Ki(e,i,r),u_ratio:o/t.pixelsToTileUnits(i,1,a.zoom),u_device_pixel_ratio:e.pixelRatio,u_units_to_pixels:[1/a.pixelsToGLUnits[0],1/a.pixelsToGLUnits[1]]}},Wi=(e,i,r,o,a)=>t.extend(qi(e,i,r,o),{u_image:0,u_image_height:a}),Xi=(e,i,r,o,a)=>{const s=e.transform,n=Hi(i,s);return {u_translation:Ki(e,i,r),u_texsize:i.imageAtlasTexture.size,u_ratio:o/t.pixelsToTileUnits(i,1,s.zoom),u_device_pixel_ratio:e.pixelRatio,u_image:0,u_scale:[n,a.fromScale,a.toScale],u_fade:a.t,u_units_to_pixels:[1/s.pixelsToGLUnits[0],1/s.pixelsToGLUnits[1]]}},$i=(e,i,r,o,a,s)=>{const n=e.lineAtlas,l=Hi(i,e.transform),c="round"===r.layout.get("line-cap"),h=n.getDash(a.from,c),u=n.getDash(a.to,c),d=h.width*s.fromScale,_=u.width*s.toScale;return t.extend(qi(e,i,r,o),{u_patternscale_a:[l/d,-h.height/2],u_patternscale_b:[l/_,-u.height/2],u_sdfgamma:n.width/(256*Math.min(d,_)*e.pixelRatio)/2,u_image:0,u_tex_y_a:h.y,u_tex_y_b:u.y,u_mix:s.t})};function Hi(e,i){return 1/t.pixelsToTileUnits(e,1,i.tileZoom)}function Ki(e,i,r){return t.translatePosition(e.transform,i,r.paint.get("line-translate"),r.paint.get("line-translate-anchor"))}const Yi=(e,t,i,r,o)=>{return {u_tl_parent:e,u_scale_parent:t,u_buffer_scale:1,u_fade_t:i.mix,u_opacity:i.opacity*r.paint.get("raster-opacity"),u_image0:0,u_image1:1,u_brightness_low:r.paint.get("raster-brightness-min"),u_brightness_high:r.paint.get("raster-brightness-max"),u_saturation_factor:(s=r.paint.get("raster-saturation"),s>0?1-1/(1.001-s):-s),u_contrast_factor:(a=r.paint.get("raster-contrast"),a>0?1/(1-a):1+a),u_spin_weights:Ji(r.paint.get("raster-hue-rotate")),u_coords_top:[o[0].x,o[0].y,o[1].x,o[1].y],u_coords_bottom:[o[3].x,o[3].y,o[2].x,o[2].y]};var a,s;};function Ji(e){e*=Math.PI/180;const t=Math.sin(e),i=Math.cos(e);return [(2*i+1)/3,(-Math.sqrt(3)*t-i+1)/3,(Math.sqrt(3)*t-i+1)/3]}const Qi=(e,t,i,r,o,a,s,n,l,c,h,u,d)=>{const _=s.transform;return {u_is_size_zoom_constant:+("constant"===e||"source"===e),u_is_size_feature_constant:+("constant"===e||"camera"===e),u_size_t:t?t.uSizeT:0,u_size:t?t.uSize:0,u_camera_to_center_distance:_.cameraToCenterDistance,u_pitch:_.pitch/360*2*Math.PI,u_rotate_symbol:+i,u_aspect_ratio:_.width/_.height,u_fade_change:s.options.fadeDuration?s.symbolFadeChange:1,u_label_plane_matrix:n,u_coord_matrix:l,u_is_text:+h,u_pitch_with_map:+r,u_is_along_line:o,u_is_variable_anchor:a,u_texsize:u,u_texture:0,u_translation:c,u_pitched_scale:d}},er=(e,i,r,o,a,s,n,l,c,h,u,d,_,p)=>{const m=n.transform;return t.extend(Qi(e,i,r,o,a,s,n,l,c,h,u,d,p),{u_gamma_scale:o?Math.cos(m.pitch*Math.PI/180)*m.cameraToCenterDistance:1,u_device_pixel_ratio:n.pixelRatio,u_is_halo:+_})},tr=(e,i,r,o,a,s,n,l,c,h,u,d,_)=>t.extend(er(e,i,r,o,a,s,n,l,c,h,!0,u,!0,_),{u_texsize_icon:d,u_texture_icon:1}),ir=(e,t)=>({u_opacity:e,u_color:t}),rr=(e,i,r,o,a)=>t.extend(function(e,i,r,o){const a=r.imageManager.getPattern(e.from.toString()),s=r.imageManager.getPattern(e.to.toString()),{width:n,height:l}=r.imageManager.getPixelSize(),c=Math.pow(2,o.tileID.overscaledZ),h=o.tileSize*Math.pow(2,r.transform.tileZoom)/c,u=h*(o.tileID.canonical.x+o.tileID.wrap*c),d=h*o.tileID.canonical.y;return {u_image:0,u_pattern_tl_a:a.tl,u_pattern_br_a:a.br,u_pattern_tl_b:s.tl,u_pattern_br_b:s.br,u_texsize:[n,l],u_mix:i.t,u_pattern_size_a:a.displaySize,u_pattern_size_b:s.displaySize,u_scale_a:i.fromScale,u_scale_b:i.toScale,u_tile_units_to_pixels:1/t.pixelsToTileUnits(o,1,r.transform.tileZoom),u_pixel_coord_upper:[u>>16,d>>16],u_pixel_coord_lower:[65535&u,65535&d]}}(r,a,i,o),{u_opacity:e}),or=(e,t)=>{},ar={fillExtrusion:(e,i)=>({u_lightpos:new t.Uniform3f(e,i.u_lightpos),u_lightpos_globe:new t.Uniform3f(e,i.u_lightpos_globe),u_lightintensity:new t.Uniform1f(e,i.u_lightintensity),u_lightcolor:new t.Uniform3f(e,i.u_lightcolor),u_vertical_gradient:new t.Uniform1f(e,i.u_vertical_gradient),u_opacity:new t.Uniform1f(e,i.u_opacity),u_fill_translate:new t.Uniform2f(e,i.u_fill_translate)}),fillExtrusionPattern:(e,i)=>({u_lightpos:new t.Uniform3f(e,i.u_lightpos),u_lightpos_globe:new t.Uniform3f(e,i.u_lightpos_globe),u_lightintensity:new t.Uniform1f(e,i.u_lightintensity),u_lightcolor:new t.Uniform3f(e,i.u_lightcolor),u_vertical_gradient:new t.Uniform1f(e,i.u_vertical_gradient),u_height_factor:new t.Uniform1f(e,i.u_height_factor),u_opacity:new t.Uniform1f(e,i.u_opacity),u_fill_translate:new t.Uniform2f(e,i.u_fill_translate),u_image:new t.Uniform1i(e,i.u_image),u_texsize:new t.Uniform2f(e,i.u_texsize),u_pixel_coord_upper:new t.Uniform2f(e,i.u_pixel_coord_upper),u_pixel_coord_lower:new t.Uniform2f(e,i.u_pixel_coord_lower),u_scale:new t.Uniform3f(e,i.u_scale),u_fade:new t.Uniform1f(e,i.u_fade)}),fill:(e,i)=>({u_fill_translate:new t.Uniform2f(e,i.u_fill_translate)}),fillPattern:(e,i)=>({u_image:new t.Uniform1i(e,i.u_image),u_texsize:new t.Uniform2f(e,i.u_texsize),u_pixel_coord_upper:new t.Uniform2f(e,i.u_pixel_coord_upper),u_pixel_coord_lower:new t.Uniform2f(e,i.u_pixel_coord_lower),u_scale:new t.Uniform3f(e,i.u_scale),u_fade:new t.Uniform1f(e,i.u_fade),u_fill_translate:new t.Uniform2f(e,i.u_fill_translate)}),fillOutline:(e,i)=>({u_world:new t.Uniform2f(e,i.u_world),u_fill_translate:new t.Uniform2f(e,i.u_fill_translate)}),fillOutlinePattern:(e,i)=>({u_world:new t.Uniform2f(e,i.u_world),u_image:new t.Uniform1i(e,i.u_image),u_texsize:new t.Uniform2f(e,i.u_texsize),u_pixel_coord_upper:new t.Uniform2f(e,i.u_pixel_coord_upper),u_pixel_coord_lower:new t.Uniform2f(e,i.u_pixel_coord_lower),u_scale:new t.Uniform3f(e,i.u_scale),u_fade:new t.Uniform1f(e,i.u_fade),u_fill_translate:new t.Uniform2f(e,i.u_fill_translate)}),circle:(e,i)=>({u_camera_to_center_distance:new t.Uniform1f(e,i.u_camera_to_center_distance),u_scale_with_map:new t.Uniform1i(e,i.u_scale_with_map),u_pitch_with_map:new t.Uniform1i(e,i.u_pitch_with_map),u_extrude_scale:new t.Uniform2f(e,i.u_extrude_scale),u_device_pixel_ratio:new t.Uniform1f(e,i.u_device_pixel_ratio),u_globe_extrude_scale:new t.Uniform1f(e,i.u_globe_extrude_scale),u_translate:new t.Uniform2f(e,i.u_translate)}),collisionBox:(e,i)=>({u_pixel_extrude_scale:new t.Uniform2f(e,i.u_pixel_extrude_scale)}),collisionCircle:(e,i)=>({u_viewport_size:new t.Uniform2f(e,i.u_viewport_size)}),debug:(e,i)=>({u_color:new t.UniformColor(e,i.u_color),u_overlay:new t.Uniform1i(e,i.u_overlay),u_overlay_scale:new t.Uniform1f(e,i.u_overlay_scale)}),depth:or,clippingMask:or,heatmap:(e,i)=>({u_extrude_scale:new t.Uniform1f(e,i.u_extrude_scale),u_intensity:new t.Uniform1f(e,i.u_intensity),u_globe_extrude_scale:new t.Uniform1f(e,i.u_globe_extrude_scale)}),heatmapTexture:(e,i)=>({u_matrix:new t.UniformMatrix4f(e,i.u_matrix),u_world:new t.Uniform2f(e,i.u_world),u_image:new t.Uniform1i(e,i.u_image),u_color_ramp:new t.Uniform1i(e,i.u_color_ramp),u_opacity:new t.Uniform1f(e,i.u_opacity)}),hillshade:(e,i)=>({u_image:new t.Uniform1i(e,i.u_image),u_latrange:new t.Uniform2f(e,i.u_latrange),u_light:new t.Uniform2f(e,i.u_light),u_shadow:new t.UniformColor(e,i.u_shadow),u_highlight:new t.UniformColor(e,i.u_highlight),u_accent:new t.UniformColor(e,i.u_accent)}),hillshadePrepare:(e,i)=>({u_matrix:new t.UniformMatrix4f(e,i.u_matrix),u_image:new t.Uniform1i(e,i.u_image),u_dimension:new t.Uniform2f(e,i.u_dimension),u_zoom:new t.Uniform1f(e,i.u_zoom),u_unpack:new t.Uniform4f(e,i.u_unpack)}),line:(e,i)=>({u_translation:new t.Uniform2f(e,i.u_translation),u_ratio:new t.Uniform1f(e,i.u_ratio),u_device_pixel_ratio:new t.Uniform1f(e,i.u_device_pixel_ratio),u_units_to_pixels:new t.Uniform2f(e,i.u_units_to_pixels)}),lineGradient:(e,i)=>({u_translation:new t.Uniform2f(e,i.u_translation),u_ratio:new t.Uniform1f(e,i.u_ratio),u_device_pixel_ratio:new t.Uniform1f(e,i.u_device_pixel_ratio),u_units_to_pixels:new t.Uniform2f(e,i.u_units_to_pixels),u_image:new t.Uniform1i(e,i.u_image),u_image_height:new t.Uniform1f(e,i.u_image_height)}),linePattern:(e,i)=>({u_translation:new t.Uniform2f(e,i.u_translation),u_texsize:new t.Uniform2f(e,i.u_texsize),u_ratio:new t.Uniform1f(e,i.u_ratio),u_device_pixel_ratio:new t.Uniform1f(e,i.u_device_pixel_ratio),u_image:new t.Uniform1i(e,i.u_image),u_units_to_pixels:new t.Uniform2f(e,i.u_units_to_pixels),u_scale:new t.Uniform3f(e,i.u_scale),u_fade:new t.Uniform1f(e,i.u_fade)}),lineSDF:(e,i)=>({u_translation:new t.Uniform2f(e,i.u_translation),u_ratio:new t.Uniform1f(e,i.u_ratio),u_device_pixel_ratio:new t.Uniform1f(e,i.u_device_pixel_ratio),u_units_to_pixels:new t.Uniform2f(e,i.u_units_to_pixels),u_patternscale_a:new t.Uniform2f(e,i.u_patternscale_a),u_patternscale_b:new t.Uniform2f(e,i.u_patternscale_b),u_sdfgamma:new t.Uniform1f(e,i.u_sdfgamma),u_image:new t.Uniform1i(e,i.u_image),u_tex_y_a:new t.Uniform1f(e,i.u_tex_y_a),u_tex_y_b:new t.Uniform1f(e,i.u_tex_y_b),u_mix:new t.Uniform1f(e,i.u_mix)}),raster:(e,i)=>({u_tl_parent:new t.Uniform2f(e,i.u_tl_parent),u_scale_parent:new t.Uniform1f(e,i.u_scale_parent),u_buffer_scale:new t.Uniform1f(e,i.u_buffer_scale),u_fade_t:new t.Uniform1f(e,i.u_fade_t),u_opacity:new t.Uniform1f(e,i.u_opacity),u_image0:new t.Uniform1i(e,i.u_image0),u_image1:new t.Uniform1i(e,i.u_image1),u_brightness_low:new t.Uniform1f(e,i.u_brightness_low),u_brightness_high:new t.Uniform1f(e,i.u_brightness_high),u_saturation_factor:new t.Uniform1f(e,i.u_saturation_factor),u_contrast_factor:new t.Uniform1f(e,i.u_contrast_factor),u_spin_weights:new t.Uniform3f(e,i.u_spin_weights),u_coords_top:new t.Uniform4f(e,i.u_coords_top),u_coords_bottom:new t.Uniform4f(e,i.u_coords_bottom)}),symbolIcon:(e,i)=>({u_is_size_zoom_constant:new t.Uniform1i(e,i.u_is_size_zoom_constant),u_is_size_feature_constant:new t.Uniform1i(e,i.u_is_size_feature_constant),u_size_t:new t.Uniform1f(e,i.u_size_t),u_size:new t.Uniform1f(e,i.u_size),u_camera_to_center_distance:new t.Uniform1f(e,i.u_camera_to_center_distance),u_pitch:new t.Uniform1f(e,i.u_pitch),u_rotate_symbol:new t.Uniform1i(e,i.u_rotate_symbol),u_aspect_ratio:new t.Uniform1f(e,i.u_aspect_ratio),u_fade_change:new t.Uniform1f(e,i.u_fade_change),u_label_plane_matrix:new t.UniformMatrix4f(e,i.u_label_plane_matrix),u_coord_matrix:new t.UniformMatrix4f(e,i.u_coord_matrix),u_is_text:new t.Uniform1i(e,i.u_is_text),u_pitch_with_map:new t.Uniform1i(e,i.u_pitch_with_map),u_is_along_line:new t.Uniform1i(e,i.u_is_along_line),u_is_variable_anchor:new t.Uniform1i(e,i.u_is_variable_anchor),u_texsize:new t.Uniform2f(e,i.u_texsize),u_texture:new t.Uniform1i(e,i.u_texture),u_translation:new t.Uniform2f(e,i.u_translation),u_pitched_scale:new t.Uniform1f(e,i.u_pitched_scale)}),symbolSDF:(e,i)=>({u_is_size_zoom_constant:new t.Uniform1i(e,i.u_is_size_zoom_constant),u_is_size_feature_constant:new t.Uniform1i(e,i.u_is_size_feature_constant),u_size_t:new t.Uniform1f(e,i.u_size_t),u_size:new t.Uniform1f(e,i.u_size),u_camera_to_center_distance:new t.Uniform1f(e,i.u_camera_to_center_distance),u_pitch:new t.Uniform1f(e,i.u_pitch),u_rotate_symbol:new t.Uniform1i(e,i.u_rotate_symbol),u_aspect_ratio:new t.Uniform1f(e,i.u_aspect_ratio),u_fade_change:new t.Uniform1f(e,i.u_fade_change),u_label_plane_matrix:new t.UniformMatrix4f(e,i.u_label_plane_matrix),u_coord_matrix:new t.UniformMatrix4f(e,i.u_coord_matrix),u_is_text:new t.Uniform1i(e,i.u_is_text),u_pitch_with_map:new t.Uniform1i(e,i.u_pitch_with_map),u_is_along_line:new t.Uniform1i(e,i.u_is_along_line),u_is_variable_anchor:new t.Uniform1i(e,i.u_is_variable_anchor),u_texsize:new t.Uniform2f(e,i.u_texsize),u_texture:new t.Uniform1i(e,i.u_texture),u_gamma_scale:new t.Uniform1f(e,i.u_gamma_scale),u_device_pixel_ratio:new t.Uniform1f(e,i.u_device_pixel_ratio),u_is_halo:new t.Uniform1i(e,i.u_is_halo),u_translation:new t.Uniform2f(e,i.u_translation),u_pitched_scale:new t.Uniform1f(e,i.u_pitched_scale)}),symbolTextAndIcon:(e,i)=>({u_is_size_zoom_constant:new t.Uniform1i(e,i.u_is_size_zoom_constant),u_is_size_feature_constant:new t.Uniform1i(e,i.u_is_size_feature_constant),u_size_t:new t.Uniform1f(e,i.u_size_t),u_size:new t.Uniform1f(e,i.u_size),u_camera_to_center_distance:new t.Uniform1f(e,i.u_camera_to_center_distance),u_pitch:new t.Uniform1f(e,i.u_pitch),u_rotate_symbol:new t.Uniform1i(e,i.u_rotate_symbol),u_aspect_ratio:new t.Uniform1f(e,i.u_aspect_ratio),u_fade_change:new t.Uniform1f(e,i.u_fade_change),u_label_plane_matrix:new t.UniformMatrix4f(e,i.u_label_plane_matrix),u_coord_matrix:new t.UniformMatrix4f(e,i.u_coord_matrix),u_is_text:new t.Uniform1i(e,i.u_is_text),u_pitch_with_map:new t.Uniform1i(e,i.u_pitch_with_map),u_is_along_line:new t.Uniform1i(e,i.u_is_along_line),u_is_variable_anchor:new t.Uniform1i(e,i.u_is_variable_anchor),u_texsize:new t.Uniform2f(e,i.u_texsize),u_texsize_icon:new t.Uniform2f(e,i.u_texsize_icon),u_texture:new t.Uniform1i(e,i.u_texture),u_texture_icon:new t.Uniform1i(e,i.u_texture_icon),u_gamma_scale:new t.Uniform1f(e,i.u_gamma_scale),u_device_pixel_ratio:new t.Uniform1f(e,i.u_device_pixel_ratio),u_is_halo:new t.Uniform1i(e,i.u_is_halo),u_translation:new t.Uniform2f(e,i.u_translation),u_pitched_scale:new t.Uniform1f(e,i.u_pitched_scale)}),background:(e,i)=>({u_opacity:new t.Uniform1f(e,i.u_opacity),u_color:new t.UniformColor(e,i.u_color)}),backgroundPattern:(e,i)=>({u_opacity:new t.Uniform1f(e,i.u_opacity),u_image:new t.Uniform1i(e,i.u_image),u_pattern_tl_a:new t.Uniform2f(e,i.u_pattern_tl_a),u_pattern_br_a:new t.Uniform2f(e,i.u_pattern_br_a),u_pattern_tl_b:new t.Uniform2f(e,i.u_pattern_tl_b),u_pattern_br_b:new t.Uniform2f(e,i.u_pattern_br_b),u_texsize:new t.Uniform2f(e,i.u_texsize),u_mix:new t.Uniform1f(e,i.u_mix),u_pattern_size_a:new t.Uniform2f(e,i.u_pattern_size_a),u_pattern_size_b:new t.Uniform2f(e,i.u_pattern_size_b),u_scale_a:new t.Uniform1f(e,i.u_scale_a),u_scale_b:new t.Uniform1f(e,i.u_scale_b),u_pixel_coord_upper:new t.Uniform2f(e,i.u_pixel_coord_upper),u_pixel_coord_lower:new t.Uniform2f(e,i.u_pixel_coord_lower),u_tile_units_to_pixels:new t.Uniform1f(e,i.u_tile_units_to_pixels)}),terrain:(e,i)=>({u_texture:new t.Uniform1i(e,i.u_texture),u_ele_delta:new t.Uniform1f(e,i.u_ele_delta),u_fog_matrix:new t.UniformMatrix4f(e,i.u_fog_matrix),u_fog_color:new t.UniformColor(e,i.u_fog_color),u_fog_ground_blend:new t.Uniform1f(e,i.u_fog_ground_blend),u_fog_ground_blend_opacity:new t.Uniform1f(e,i.u_fog_ground_blend_opacity),u_horizon_color:new t.UniformColor(e,i.u_horizon_color),u_horizon_fog_blend:new t.Uniform1f(e,i.u_horizon_fog_blend),u_is_globe_mode:new t.Uniform1f(e,i.u_is_globe_mode)}),terrainDepth:(e,i)=>({u_ele_delta:new t.Uniform1f(e,i.u_ele_delta)}),terrainCoords:(e,i)=>({u_texture:new t.Uniform1i(e,i.u_texture),u_terrain_coords_id:new t.Uniform1f(e,i.u_terrain_coords_id),u_ele_delta:new t.Uniform1f(e,i.u_ele_delta)}),projectionErrorMeasurement:(e,i)=>({u_input:new t.Uniform1f(e,i.u_input),u_output_expected:new t.Uniform1f(e,i.u_output_expected)}),atmosphere:(e,i)=>({u_sun_pos:new t.Uniform3f(e,i.u_sun_pos),u_atmosphere_blend:new t.Uniform1f(e,i.u_atmosphere_blend),u_globe_position:new t.Uniform3f(e,i.u_globe_position),u_globe_radius:new t.Uniform1f(e,i.u_globe_radius),u_inv_proj_matrix:new t.UniformMatrix4f(e,i.u_inv_proj_matrix)}),sky:(e,i)=>({u_sky_color:new t.UniformColor(e,i.u_sky_color),u_horizon_color:new t.UniformColor(e,i.u_horizon_color),u_horizon:new t.Uniform2f(e,i.u_horizon),u_horizon_normal:new t.Uniform2f(e,i.u_horizon_normal),u_sky_horizon_blend:new t.Uniform1f(e,i.u_sky_horizon_blend),u_sky_blend:new t.Uniform1f(e,i.u_sky_blend)})};class sr{constructor(e,t,i){this.context=e;const r=e.gl;this.buffer=r.createBuffer(),this.dynamicDraw=Boolean(i),this.context.unbindVAO(),e.bindElementBuffer.set(this.buffer),r.bufferData(r.ELEMENT_ARRAY_BUFFER,t.arrayBuffer,this.dynamicDraw?r.DYNAMIC_DRAW:r.STATIC_DRAW),this.dynamicDraw||delete t.arrayBuffer;}bind(){this.context.bindElementBuffer.set(this.buffer);}updateData(e){const t=this.context.gl;if(!this.dynamicDraw)throw new Error("Attempted to update data while not in dynamic mode.");this.context.unbindVAO(),this.bind(),t.bufferSubData(t.ELEMENT_ARRAY_BUFFER,0,e.arrayBuffer);}destroy(){this.buffer&&(this.context.gl.deleteBuffer(this.buffer),delete this.buffer);}}const nr={Int8:"BYTE",Uint8:"UNSIGNED_BYTE",Int16:"SHORT",Uint16:"UNSIGNED_SHORT",Int32:"INT",Uint32:"UNSIGNED_INT",Float32:"FLOAT"};class lr{constructor(e,t,i,r){this.length=t.length,this.attributes=i,this.itemSize=t.bytesPerElement,this.dynamicDraw=r,this.context=e;const o=e.gl;this.buffer=o.createBuffer(),e.bindVertexBuffer.set(this.buffer),o.bufferData(o.ARRAY_BUFFER,t.arrayBuffer,this.dynamicDraw?o.DYNAMIC_DRAW:o.STATIC_DRAW),this.dynamicDraw||delete t.arrayBuffer;}bind(){this.context.bindVertexBuffer.set(this.buffer);}updateData(e){if(e.length!==this.length)throw new Error(`Length of new data is ${e.length}, which doesn't match current length of ${this.length}`);const t=this.context.gl;this.bind(),t.bufferSubData(t.ARRAY_BUFFER,0,e.arrayBuffer);}enableAttributes(e,t){for(let i=0;i0&&(h.push({circleArray:f,circleOffset:d,coord:_}),u+=f.length/4,d=u),m&&c.draw(s,l.LINES,Zt.disabled,qt.disabled,e.colorModeForRenderPass(),Gt.disabled,Bi(e.transform),e.style.map.terrain&&e.style.map.terrain.getTerrainData(_),n.getProjectionData({overscaledTileID:_,applyGlobeMatrix:!0,applyTerrainMatrix:!0}),r.id,m.layoutVertexBuffer,m.indexBuffer,m.segments,null,e.transform.zoom,null,null,m.collisionVertexBuffer);}if(!a||!h.length)return;const _=e.useProgram("collisionCircle"),p=new t.CollisionCircleLayoutArray;p.resize(4*u),p._trim();let m=0;for(const e of h)for(let t=0;t=0&&(f[g.associatedIconIndex]={shiftedAnchor:M,angle:S});}else Ve(g.numGlyphs,p);}if(c){m.clear();const i=e.icon.placedSymbolArray;for(let e=0;ee.style.map.terrain.getElevation(l,t,i):null,i="map"===r.layout.get("text-rotation-alignment");De(c,e,a,O,U,v,h,i,l.toUnwrapped(),f.width,f.height,N,t);}const q=a&&E||V,W=y||q?Hr:v?O:e.transform.clipSpaceToPixelsMatrix,X=p&&0!==r.paint.get(a?"text-halo-width":"icon-halo-width").constantOr(1);let $;$=p?c.iconsInText?tr(T.kind,S,x,v,y,q,e,W,j,N,D,k,I):er(T.kind,S,x,v,y,q,e,W,j,N,a,D,!0,I):Qi(T.kind,S,x,v,y,q,e,W,j,N,a,D,I);const H={program:M,buffers:u,uniformValues:$,projectionData:G,atlasTexture:z,atlasTextureIcon:F,atlasInterpolation:L,atlasInterpolationIcon:A,isSDF:p,hasHalo:X};if(b&&c.canOverlap){w=!0;const e=u.segments.get();for(const i of e)P.push({segments:new t.SegmentVector([i]),sortKey:i.sortKey,state:H,terrainData:R});}else P.push({segments:u.segments,sortKey:0,state:H,terrainData:R});}w&&P.sort(((e,t)=>e.sortKey-t.sortKey));for(const t of P){const i=t.state;if(p.activeTexture.set(m.TEXTURE0),i.atlasTexture.bind(i.atlasInterpolation,m.CLAMP_TO_EDGE),i.atlasTextureIcon&&(p.activeTexture.set(m.TEXTURE1),i.atlasTextureIcon&&i.atlasTextureIcon.bind(i.atlasInterpolationIcon,m.CLAMP_TO_EDGE)),i.isSDF){const o=i.uniformValues;i.hasHalo&&(o.u_is_halo=1,to(i.buffers,t.segments,r,e,i.program,T,u,d,o,i.projectionData,t.terrainData)),o.u_is_halo=0;}to(i.buffers,t.segments,r,e,i.program,T,u,d,i.uniformValues,i.projectionData,t.terrainData);}}function to(e,t,i,r,o,a,s,n,l,c,h){const u=r.context;o.draw(u,u.gl.TRIANGLES,a,s,n,Gt.backCCW,l,h,c,i.id,e.layoutVertexBuffer,e.indexBuffer,t,i.paint,r.transform.zoom,e.programConfigurations.get(i.id),e.dynamicLayoutVertexBuffer,e.opacityVertexBuffer);}function io(e,i,r,o,a){const s=e.context,n=s.gl,l=qt.disabled,c=new jt([n.ONE,n.ONE],t.Color.transparent,[!0,!0,!0,!0]),h=i.getBucket(r);if(!h)return;const u=o.key;let d=r.heatmapFbos.get(u);d||(d=oo(s,i.tileSize,i.tileSize),r.heatmapFbos.set(u,d)),s.bindFramebuffer.set(d.framebuffer),s.viewport.set([0,0,i.tileSize,i.tileSize]),s.clear({color:t.Color.transparent});const _=h.programConfigurations.get(r.id),p=e.useProgram("heatmap",_,!a),m=e.transform.getProjectionData({overscaledTileID:i.tileID,applyGlobeMatrix:!0,applyTerrainMatrix:!0}),f=e.style.map.terrain.getTerrainData(o);p.draw(s,n.TRIANGLES,Zt.disabled,l,c,Gt.disabled,ji(i,e.transform.zoom,r.paint.get("heatmap-intensity"),1),f,m,r.id,h.layoutVertexBuffer,h.indexBuffer,h.segments,r.paint,e.transform.zoom,_);}function ro(e,t,i,r,o){const a=e.context,s=a.gl,n=e.transform;a.setColorMode(e.colorModeForRenderPass());const l=ao(a,t),c=i.key,h=t.heatmapFbos.get(c);if(!h)return;a.activeTexture.set(s.TEXTURE0),s.bindTexture(s.TEXTURE_2D,h.colorAttachment.get()),a.activeTexture.set(s.TEXTURE1),l.bind(s.LINEAR,s.CLAMP_TO_EDGE);const u=n.getProjectionData({overscaledTileID:i,applyTerrainMatrix:o,applyGlobeMatrix:!r});e.useProgram("heatmapTexture").draw(a,s.TRIANGLES,Zt.disabled,qt.disabled,e.colorModeForRenderPass(),Gt.disabled,Ni(e,t,0,1),null,u,t.id,e.rasterBoundsBuffer,e.quadTriangleIndexBuffer,e.rasterBoundsSegments,t.paint,n.zoom),h.destroy(),t.heatmapFbos.delete(c);}function oo(e,t,i){var r,o;const a=e.gl,s=a.createTexture();a.bindTexture(a.TEXTURE_2D,s),a.texParameteri(a.TEXTURE_2D,a.TEXTURE_WRAP_S,a.CLAMP_TO_EDGE),a.texParameteri(a.TEXTURE_2D,a.TEXTURE_WRAP_T,a.CLAMP_TO_EDGE),a.texParameteri(a.TEXTURE_2D,a.TEXTURE_MIN_FILTER,a.LINEAR),a.texParameteri(a.TEXTURE_2D,a.TEXTURE_MAG_FILTER,a.LINEAR);const n=null!==(r=e.HALF_FLOAT)&&void 0!==r?r:a.UNSIGNED_BYTE,l=null!==(o=e.RGBA16F)&&void 0!==o?o:a.RGBA;a.texImage2D(a.TEXTURE_2D,0,l,t,i,0,a.RGBA,n,null);const c=e.createFramebuffer(t,i,!1,!1);return c.colorAttachment.set(s),c}function ao(e,t){return t.colorRampTexture||(t.colorRampTexture=new y(e,t.colorRamp,e.gl.RGBA)),t.colorRampTexture}function so(e,t,i,r,o){if(!i||!r||!r.imageAtlas)return;const a=r.imageAtlas.patternPositions;let s=a[i.to.toString()],n=a[i.from.toString()];if(!s&&n&&(s=n),!n&&s&&(n=s),!s||!n){const e=o.getPaintProperty(t);s=a[e],n=a[e];}s&&n&&e.setConstantPatternPositions(s,n);}function no(e,i,r,o,a,s,n,l){const c=e.context.gl,h="fill-pattern",u=r.paint.get(h),d=u&&u.constantOr(1),_=r.getCrossfadeParameters();let p,m,f,g,v;const y=e.transform,x=r.paint.get("fill-translate"),b=r.paint.get("fill-translate-anchor");n?(m=d&&!r.getPaintProperty("fill-outline-color")?"fillOutlinePattern":"fillOutline",p=c.LINES):(m=d?"fillPattern":"fill",p=c.TRIANGLES);const w=u.constantOr(null);for(const u of o){const T=i.getTile(u);if(d&&!T.patternsLoaded())continue;const E=T.getBucket(r);if(!E)continue;const P=E.programConfigurations.get(r.id),I=e.useProgram(m,P),C=e.style.map.terrain&&e.style.map.terrain.getTerrainData(u);d&&(e.context.activeTexture.set(c.TEXTURE0),T.imageAtlasTexture.bind(c.LINEAR,c.CLAMP_TO_EDGE),P.updatePaintBuffers(_)),so(P,h,w,T,r);const M=y.getProjectionData({overscaledTileID:u,applyGlobeMatrix:!l,applyTerrainMatrix:!0}),S=t.translatePosition(y,T,x,b);if(n){g=E.indexBuffer2,v=E.segments2;const t=[c.drawingBufferWidth,c.drawingBufferHeight];f="fillOutlinePattern"===m&&d?ki(e,_,T,t,S):Ai(t,S);}else g=E.indexBuffer,v=E.segments,f=d?Li(e,_,T,S):{u_fill_translate:S};let R;if("translucent"===e.renderPass&&l){const[t]=e.getStencilConfigForOverlapAndUpdateStencilID(o);R=t[u.overscaledZ];}else R=e.stencilModeForClipping(u);I.draw(e.context,p,a,R,s,Gt.backCCW,f,C,M,r.id,E.layoutVertexBuffer,g,v,r.paint,e.transform.zoom,P);}}function lo(e,i,r,o,a,s,n,l){const c=e.context,h=c.gl,u="fill-extrusion-pattern",d=r.paint.get(u),_=d.constantOr(1),p=r.getCrossfadeParameters(),m=r.paint.get("fill-extrusion-opacity"),f=d.constantOr(null),g=e.transform;for(const d of o){const o=i.getTile(d),v=o.getBucket(r);if(!v)continue;const y=e.style.map.terrain&&e.style.map.terrain.getTerrainData(d),x=v.programConfigurations.get(r.id),b=e.useProgram(_?"fillExtrusionPattern":"fillExtrusion",x);_&&(e.context.activeTexture.set(h.TEXTURE0),o.imageAtlasTexture.bind(h.LINEAR,h.CLAMP_TO_EDGE),x.updatePaintBuffers(p));const w=g.getProjectionData({overscaledTileID:d,applyGlobeMatrix:!l,applyTerrainMatrix:!0});so(x,u,f,o,r);const T=t.translatePosition(g,o,r.paint.get("fill-extrusion-translate"),r.paint.get("fill-extrusion-translate-anchor")),E=r.paint.get("fill-extrusion-vertical-gradient"),P=_?zi(e,E,m,T,d,p,o):Di(e,E,m,T);b.draw(c,c.gl.TRIANGLES,a,s,n,Gt.backCCW,P,y,w,r.id,v.layoutVertexBuffer,v.indexBuffer,v.segments,r.paint,e.transform.zoom,x,e.style.map.terrain&&v.centroidVertexBuffer);}}function co(e,t,i,r,o,a,s,n,l){var c;const h=e.style.projection,u=e.context,d=e.transform,_=u.gl,p=e.useProgram("hillshade"),m=!e.options.moving;for(const f of r){const r=t.getTile(f),g=r.fbo;if(!g)continue;const v=h.getMeshFromTileID(u,f.canonical,n,!0,"raster"),y=null===(c=e.style.map.terrain)||void 0===c?void 0:c.getTerrainData(f);u.activeTexture.set(_.TEXTURE0),_.bindTexture(_.TEXTURE_2D,g.colorAttachment.get());const x=d.getProjectionData({overscaledTileID:f,aligned:m,applyGlobeMatrix:!l,applyTerrainMatrix:!0});p.draw(u,_.TRIANGLES,a,o[f.overscaledZ],s,Gt.backCCW,Gi(e,r,i),y,x,i.id,v.vertexBuffer,v.indexBuffer,v.segments);}}const ho=[new t.Point(0,0),new t.Point(t.EXTENT,0),new t.Point(t.EXTENT,t.EXTENT),new t.Point(0,t.EXTENT)];function uo(e,t,i,r,o,a,s,n,l=!1,c=!1){const h=r[r.length-1].overscaledZ,u=e.context,d=u.gl,_=e.useProgram("raster"),p=e.transform,m=e.style.projection,f=e.colorModeForRenderPass(),g=!e.options.moving;for(const v of r){const r=e.getDepthModeForSublayer(v.overscaledZ-h,1===i.paint.get("raster-opacity")?Zt.ReadWrite:Zt.ReadOnly,d.LESS),y=t.getTile(v);y.registerFadeDuration(i.paint.get("raster-fade-duration"));const x=t.findLoadedParent(v,0),b=t.findLoadedSibling(v),w=_o(y,x||b||null,t,i,e.transform,e.style.map.terrain);let T,E;const P="nearest"===i.paint.get("raster-resampling")?d.NEAREST:d.LINEAR;u.activeTexture.set(d.TEXTURE0),y.texture.bind(P,d.CLAMP_TO_EDGE,d.LINEAR_MIPMAP_NEAREST),u.activeTexture.set(d.TEXTURE1),x?(x.texture.bind(P,d.CLAMP_TO_EDGE,d.LINEAR_MIPMAP_NEAREST),T=Math.pow(2,x.tileID.overscaledZ-y.tileID.overscaledZ),E=[y.tileID.canonical.x*T%1,y.tileID.canonical.y*T%1]):y.texture.bind(P,d.CLAMP_TO_EDGE,d.LINEAR_MIPMAP_NEAREST),y.texture.useMipmap&&u.extTextureFilterAnisotropic&&e.transform.pitch>20&&d.texParameterf(d.TEXTURE_2D,u.extTextureFilterAnisotropic.TEXTURE_MAX_ANISOTROPY_EXT,u.extTextureFilterAnisotropicMax);const I=e.style.map.terrain&&e.style.map.terrain.getTerrainData(v),C=p.getProjectionData({overscaledTileID:v,aligned:g,applyGlobeMatrix:!c,applyTerrainMatrix:!0}),M=Yi(E||[0,0],T||1,w,i,n),S=m.getMeshFromTileID(u,v.canonical,a,s,"raster");_.draw(u,d.TRIANGLES,r,o?o[v.overscaledZ]:qt.disabled,f,l?Gt.frontCCW:Gt.backCCW,M,I,C,i.id,S.vertexBuffer,S.indexBuffer,S.segments);}}function _o(e,i,r,o,a,s){const n=o.paint.get("raster-fade-duration");if(!s&&n>0){const o=f.now(),s=(o-e.timeAdded)/n,l=i?(o-i.timeAdded)/n:-1,c=r.getSource(),h=ge(a,{tileSize:c.tileSize,roundZoom:c.roundZoom}),u=!i||Math.abs(i.tileID.overscaledZ-h)>Math.abs(e.tileID.overscaledZ-h),d=u&&e.refreshedUponExpiration?1:t.clamp(u?s:1-l,0,1);return e.refreshedUponExpiration&&s>=1&&(e.refreshedUponExpiration=!1),i?{opacity:1,mix:1-d}:{opacity:d,mix:0}}return {opacity:1,mix:0}}const po=new t.Color(1,0,0,1),mo=new t.Color(0,1,0,1),fo=new t.Color(0,0,1,1),go=new t.Color(1,0,1,1),vo=new t.Color(0,1,1,1);function yo(e,t,i,r){bo(e,0,t+i/2,e.transform.width,i,r);}function xo(e,t,i,r){bo(e,t-i/2,0,i,e.transform.height,r);}function bo(e,t,i,r,o,a){const s=e.context,n=s.gl;n.enable(n.SCISSOR_TEST),n.scissor(t*e.pixelRatio,i*e.pixelRatio,r*e.pixelRatio,o*e.pixelRatio),s.clear({color:a}),n.disable(n.SCISSOR_TEST);}function wo(e,i,r){const o=e.context,a=o.gl,s=e.useProgram("debug"),n=Zt.disabled,l=qt.disabled,c=e.colorModeForRenderPass(),h="$debug",u=e.style.map.terrain&&e.style.map.terrain.getTerrainData(r);o.activeTexture.set(a.TEXTURE0);const d=i.getTileByID(r.key).latestRawTileData,_=Math.floor((d&&d.byteLength||0)/1024),p=i.getTile(r).tileSize,m=512/Math.min(p,512)*(r.overscaledZ/e.transform.zoom)*.5;let f=r.canonical.toString();r.overscaledZ!==r.canonical.z&&(f+=` => ${r.overscaledZ}`),function(e,t){e.initDebugOverlayCanvas();const i=e.debugOverlayCanvas,r=e.context.gl,o=e.debugOverlayCanvas.getContext("2d");o.clearRect(0,0,i.width,i.height),o.shadowColor="white",o.shadowBlur=2,o.lineWidth=1.5,o.strokeStyle="white",o.textBaseline="top",o.font="bold 36px Open Sans, sans-serif",o.fillText(t,5,5),o.strokeText(t,5,5),e.debugOverlayTexture.update(i),e.debugOverlayTexture.bind(r.LINEAR,r.CLAMP_TO_EDGE);}(e,`${f} ${_}kB`);const g=e.transform.getProjectionData({overscaledTileID:r,applyGlobeMatrix:!0,applyTerrainMatrix:!0});s.draw(o,a.TRIANGLES,n,l,jt.alphaBlended,Gt.disabled,Ui(t.Color.transparent,m),null,g,h,e.debugBuffer,e.quadTriangleIndexBuffer,e.debugSegments),s.draw(o,a.LINE_STRIP,n,l,c,Gt.disabled,Ui(t.Color.red),u,g,h,e.debugBuffer,e.tileBorderIndexBuffer,e.debugSegments);}function To(e,t,i,r){const{isRenderingGlobe:o}=r,a=e.context,s=a.gl,n=e.transform,l=e.colorModeForRenderPass(),c=e.getDepthModeFor3D(),h=e.useProgram("terrain"),u=t.getTerrainMesh();a.bindFramebuffer.set(null),a.viewport.set([0,0,e.width,e.height]);for(const r of i){const i=e.renderToTexture.getTexture(r),d=t.getTerrainData(r.tileID);a.activeTexture.set(s.TEXTURE0),s.bindTexture(s.TEXTURE_2D,i.texture);const _=t.getMeshFrameDelta(n.zoom),p=n.calculateFogMatrix(r.tileID.toUnwrapped()),m=Ii(_,p,e.style.sky,n.pitch,o),f=n.getProjectionData({overscaledTileID:r.tileID,applyTerrainMatrix:!1,applyGlobeMatrix:!0});h.draw(a,s.TRIANGLES,c,qt.disabled,l,Gt.backCCW,m,d,f,"terrain",u.vertexBuffer,u.indexBuffer,u.segments);}}function Eo(e,i){if(!i.mesh){const r=new t.PosArray;r.emplaceBack(-1,-1),r.emplaceBack(1,-1),r.emplaceBack(1,1),r.emplaceBack(-1,1);const o=new t.TriangleIndexArray;o.emplaceBack(0,1,2),o.emplaceBack(0,2,3),i.mesh=new bt(e.createVertexBuffer(r,wt.members),e.createIndexBuffer(o),t.SegmentVector.simpleSegment(0,0,r.length,o.length));}return i.mesh}class Po{constructor(e,i){this.context=new Wr(e),this.transform=i,this._tileTextures={},this.terrainFacilitator={dirty:!0,matrix:t.identity(new Float64Array(16)),renderTime:0},this.setup(),this.numSublayers=ye.maxUnderzooming+ye.maxOverzooming+1,this.depthEpsilon=1/Math.pow(2,16),this.crossTileSymbolIndex=new gt;}resize(e,t,i){if(this.width=Math.floor(e*i),this.height=Math.floor(t*i),this.pixelRatio=i,this.context.viewport.set([0,0,this.width,this.height]),this.style)for(const e of this.style._order)this.style._layers[e].resize();}setup(){const e=this.context,i=new t.PosArray;i.emplaceBack(0,0),i.emplaceBack(t.EXTENT,0),i.emplaceBack(0,t.EXTENT),i.emplaceBack(t.EXTENT,t.EXTENT),this.tileExtentBuffer=e.createVertexBuffer(i,wt.members),this.tileExtentSegments=t.SegmentVector.simpleSegment(0,0,4,2);const r=new t.PosArray;r.emplaceBack(0,0),r.emplaceBack(t.EXTENT,0),r.emplaceBack(0,t.EXTENT),r.emplaceBack(t.EXTENT,t.EXTENT),this.debugBuffer=e.createVertexBuffer(r,wt.members),this.debugSegments=t.SegmentVector.simpleSegment(0,0,4,5);const o=new t.RasterBoundsArray;o.emplaceBack(0,0,0,0),o.emplaceBack(t.EXTENT,0,t.EXTENT,0),o.emplaceBack(0,t.EXTENT,0,t.EXTENT),o.emplaceBack(t.EXTENT,t.EXTENT,t.EXTENT,t.EXTENT),this.rasterBoundsBuffer=e.createVertexBuffer(o,Ei.members),this.rasterBoundsSegments=t.SegmentVector.simpleSegment(0,0,4,2);const a=new t.PosArray;a.emplaceBack(0,0),a.emplaceBack(t.EXTENT,0),a.emplaceBack(0,t.EXTENT),a.emplaceBack(t.EXTENT,t.EXTENT),this.rasterBoundsBufferPosOnly=e.createVertexBuffer(a,wt.members),this.rasterBoundsSegmentsPosOnly=t.SegmentVector.simpleSegment(0,0,4,5);const s=new t.PosArray;s.emplaceBack(0,0),s.emplaceBack(1,0),s.emplaceBack(0,1),s.emplaceBack(1,1),this.viewportBuffer=e.createVertexBuffer(s,wt.members),this.viewportSegments=t.SegmentVector.simpleSegment(0,0,4,2);const n=new t.LineStripIndexArray;n.emplaceBack(0),n.emplaceBack(1),n.emplaceBack(3),n.emplaceBack(2),n.emplaceBack(0),this.tileBorderIndexBuffer=e.createIndexBuffer(n);const l=new t.TriangleIndexArray;l.emplaceBack(1,0,2),l.emplaceBack(1,2,3),this.quadTriangleIndexBuffer=e.createIndexBuffer(l);const c=this.context.gl;this.stencilClearMode=new qt({func:c.ALWAYS,mask:0},0,255,c.ZERO,c.ZERO,c.ZERO),this.tileExtentMesh=new bt(this.tileExtentBuffer,this.quadTriangleIndexBuffer,this.tileExtentSegments);}clearStencil(){const e=this.context,i=e.gl;this.nextStencilID=1,this.currentStencilSource=void 0;const r=t.create();t.ortho(r,0,this.width,this.height,0,0,1),t.scale(r,r,[i.drawingBufferWidth,i.drawingBufferHeight,0]);const o={mainMatrix:r,tileMercatorCoords:[0,0,1,1],clippingPlane:[0,0,0,0],projectionTransition:0,fallbackMatrix:r};this.useProgram("clippingMask",null,!0).draw(e,i.TRIANGLES,Zt.disabled,this.stencilClearMode,jt.disabled,Gt.disabled,null,null,o,"$clipping",this.viewportBuffer,this.quadTriangleIndexBuffer,this.viewportSegments);}_renderTileClippingMasks(e,t,i){if(this.currentStencilSource===e.source||!e.isTileClipped()||!t||!t.length)return;this.currentStencilSource=e.source,this.nextStencilID+t.length>256&&this.clearStencil();const r=this.context;r.setColorMode(jt.disabled),r.setDepthMode(Zt.disabled);const o={};for(const e of t)o[e.key]=this.nextStencilID++;this._renderTileMasks(o,t,i,!0),this._renderTileMasks(o,t,i,!1),this._tileClippingMaskIDs=o;}_renderTileMasks(e,t,i,r){const o=this.context,a=o.gl,s=this.style.projection,n=this.transform,l=this.useProgram("clippingMask");for(const c of t){const t=e[c.key],h=this.style.map.terrain&&this.style.map.terrain.getTerrainData(c),u=s.getMeshFromTileID(this.context,c.canonical,r,!0,"stencil"),d=n.getProjectionData({overscaledTileID:c,applyGlobeMatrix:!0,applyTerrainMatrix:!0});l.draw(o,a.TRIANGLES,Zt.disabled,new qt({func:a.ALWAYS,mask:0},t,255,a.KEEP,a.KEEP,a.REPLACE),jt.disabled,i?Gt.disabled:Gt.backCCW,null,h,d,"$clipping",u.vertexBuffer,u.indexBuffer,u.segments);}}_renderTilesDepthBuffer(){const e=this.context,t=e.gl,i=this.style.projection,r=this.transform,o=this.useProgram("depth"),a=this.getDepthModeFor3D(),s=ve(r,{tileSize:r.tileSize});for(const n of s){const s=this.style.map.terrain&&this.style.map.terrain.getTerrainData(n),l=i.getMeshFromTileID(this.context,n.canonical,!0,!0,"raster"),c=r.getProjectionData({overscaledTileID:n,applyGlobeMatrix:!0,applyTerrainMatrix:!0});o.draw(e,t.TRIANGLES,a,qt.disabled,jt.disabled,Gt.backCCW,null,s,c,"$clipping",l.vertexBuffer,l.indexBuffer,l.segments);}}stencilModeFor3D(){this.currentStencilSource=void 0,this.nextStencilID+1>256&&this.clearStencil();const e=this.nextStencilID++,t=this.context.gl;return new qt({func:t.NOTEQUAL,mask:255},e,255,t.KEEP,t.KEEP,t.REPLACE)}stencilModeForClipping(e){const t=this.context.gl;return new qt({func:t.EQUAL,mask:255},this._tileClippingMaskIDs[e.key],0,t.KEEP,t.KEEP,t.REPLACE)}getStencilConfigForOverlapAndUpdateStencilID(e){const t=this.context.gl,i=e.sort(((e,t)=>t.overscaledZ-e.overscaledZ)),r=i[i.length-1].overscaledZ,o=i[0].overscaledZ-r+1;if(o>1){this.currentStencilSource=void 0,this.nextStencilID+o>256&&this.clearStencil();const e={};for(let i=0;it.overscaledZ-e.overscaledZ)),r=i[i.length-1].overscaledZ,o=i[0].overscaledZ-r+1;if(this.clearStencil(),o>1){const e={},a={};for(let i=0;ithis.useProgram(e)}),this.context.viewport.set([0,0,this.width,this.height]),this.context.bindFramebuffer.set(null),this.context.clear({color:i.showOverdrawInspector?t.Color.black:t.Color.transparent,depth:1}),this.clearStencil(),this.style.sky&&function(e,t){const i=e.context,r=i.gl,o=((e,t,i)=>{const r=Math.cos(t.rollInRadians),o=Math.sin(t.rollInRadians),a=Rt(t),s=t.getProjectionData({overscaledTileID:null,applyGlobeMatrix:!0,applyTerrainMatrix:!0}).projectionTransition;return {u_sky_color:e.properties.get("sky-color"),u_horizon_color:e.properties.get("horizon-color"),u_horizon:[(t.width/2-a*o)*i,(t.height/2+a*r)*i],u_horizon_normal:[-o,r],u_sky_horizon_blend:e.properties.get("sky-horizon-blend")*t.height/2*i,u_sky_blend:s}})(t,e.style.map.transform,e.pixelRatio),a=new Zt(r.LEQUAL,Zt.ReadWrite,[0,1]),s=qt.disabled,n=e.colorModeForRenderPass(),l=e.useProgram("sky"),c=Eo(i,t);l.draw(i,r.TRIANGLES,a,s,n,Gt.disabled,o,null,void 0,"sky",c.vertexBuffer,c.indexBuffer,c.segments);}(this,this.style.sky),this._showOverdrawInspector=i.showOverdrawInspector,this.depthRangeFor3D=[0,1-(e._order.length+2)*this.numSublayers*this.depthEpsilon],!this.renderToTexture)for(this.renderPass="opaque",this.currentLayer=r.length-1;this.currentLayer>=0;this.currentLayer--){const e=this.style._layers[r[this.currentLayer]],t=o[e.source],i=a[e.source];this._renderTileClippingMasks(e,i,!1),this.renderLayer(this,t,e,i,l);}this.renderPass="translucent";let c=!1;for(this.currentLayer=0;this.currentLayer({u_sun_pos:e,u_atmosphere_blend:t,u_globe_position:i,u_globe_radius:r,u_inv_proj_matrix:o}))(c,u,[p[0],p[1],p[2]],d,_),f=Eo(o,i);s.draw(o,a.TRIANGLES,n,qt.disabled,jt.alphaBlended,Gt.disabled,m,null,null,"atmosphere",f.vertexBuffer,f.indexBuffer,f.segments);}(this,this.style.sky,this.style.light),this.options.showTileBoundaries){const e=function(e,t){let i=null;const r=Object.values(e._layers).flatMap((i=>i.source&&!i.isHidden(t)?[e.sourceCaches[i.source]]:[])),o=r.filter((e=>"vector"===e.getSource().type)),a=r.filter((e=>"vector"!==e.getSource().type)),s=e=>{(!i||i.getSource().maxzooms(e))),i||a.forEach((e=>s(e))),i}(this.style,this.transform.zoom);e&&function(e,t,i){for(let r=0;ru.getElevation(a,e,t):null;Jr(s,d,_,c,h,f,i,p,g,t.translatePosition(h,e,n,l),a.toUnwrapped(),r);}}}(o,e,r,i,r.layout.get("text-rotation-alignment"),r.layout.get("text-pitch-alignment"),r.paint.get("text-translate"),r.paint.get("text-translate-anchor"),a),0!==r.paint.get("icon-opacity").constantOr(1)&&eo(e,i,r,o,!1,r.paint.get("icon-translate"),r.paint.get("icon-translate-anchor"),r.layout.get("icon-rotation-alignment"),r.layout.get("icon-pitch-alignment"),r.layout.get("icon-keep-upright"),l,c,n),0!==r.paint.get("text-opacity").constantOr(1)&&eo(e,i,r,o,!0,r.paint.get("text-translate"),r.paint.get("text-translate-anchor"),r.layout.get("text-rotation-alignment"),r.layout.get("text-pitch-alignment"),r.layout.get("text-keep-upright"),l,c,n),i.map.showCollisionBoxes&&($r(e,i,r,o,!0),$r(e,i,r,o,!1));}(e,i,r,o,this.style.placement.variableOffsets,a):t.isCircleStyleLayer(r)?function(e,i,r,o,a){if("translucent"!==e.renderPass)return;const{isRenderingToTexture:s}=a,n=r.paint.get("circle-opacity"),l=r.paint.get("circle-stroke-width"),c=r.paint.get("circle-stroke-opacity"),h=!r.layout.get("circle-sort-key").isConstant();if(0===n.constantOr(1)&&(0===l.constantOr(1)||0===c.constantOr(1)))return;const u=e.context,d=u.gl,_=e.transform,p=e.getDepthModeForSublayer(0,Zt.ReadOnly),m=qt.disabled,f=e.colorModeForRenderPass(),g=[],v=_.getCircleRadiusCorrection();for(let a=0;ae.sortKey-t.sortKey));for(const t of g){const{programConfiguration:i,program:o,layoutVertexBuffer:a,indexBuffer:s,uniformValues:n,terrainData:l,projectionData:c}=t.state;o.draw(u,d.TRIANGLES,p,m,f,Gt.backCCW,n,l,c,r.id,a,s,t.segments,r.paint,e.transform.zoom,i);}}(e,i,r,o,a):t.isHeatmapStyleLayer(r)?function(e,i,r,o,a){if(0===r.paint.get("heatmap-opacity"))return;const s=e.context,{isRenderingToTexture:n,isRenderingGlobe:l}=a;if(e.style.map.terrain){for(const t of o){const o=i.getTile(t);i.hasRenderableParent(t)||("offscreen"===e.renderPass?io(e,o,r,t,l):"translucent"===e.renderPass&&ro(e,r,t,n,l));}s.viewport.set([0,0,e.width,e.height]);}else "offscreen"===e.renderPass?function(e,i,r,o){const a=e.context,s=a.gl,n=e.transform,l=qt.disabled,c=new jt([s.ONE,s.ONE],t.Color.transparent,[!0,!0,!0,!0]);((function(e,i,r){const o=e.gl;e.activeTexture.set(o.TEXTURE1),e.viewport.set([0,0,i.width/4,i.height/4]);let a=r.heatmapFbos.get(t.HEATMAP_FULL_RENDER_FBO_KEY);a?(o.bindTexture(o.TEXTURE_2D,a.colorAttachment.get()),e.bindFramebuffer.set(a.framebuffer)):(a=oo(e,i.width/4,i.height/4),r.heatmapFbos.set(t.HEATMAP_FULL_RENDER_FBO_KEY,a));}))(a,e,r),a.clear({color:t.Color.transparent});for(let t=0;t0?t.pop():null}isPatternMissing(e){if(!e)return !1;if(!e.from||!e.to)return !0;const t=this.imageManager.getPattern(e.from.toString()),i=this.imageManager.getPattern(e.to.toString());return !t||!i}useProgram(e,t,i=!1){this.cache=this.cache||{};const r=!!this.style.map.terrain,o=this.style.projection,a=e+(t?t.cacheKey:"")+`/${i?Et:o.shaderVariantName}`+(this._showOverdrawInspector?"/overdraw":"")+(r?"/terrain":"");return this.cache[a]||(this.cache[a]=new Si(this.context,yt[e],t,ar[e],this._showOverdrawInspector,r,i?yt.projectionMercator:o.shaderPreludeCode,i?Tt:o.shaderDefine)),this.cache[a]}setCustomLayerDefaults(){this.context.unbindVAO(),this.context.cullFace.setDefault(),this.context.activeTexture.setDefault(),this.context.pixelStoreUnpack.setDefault(),this.context.pixelStoreUnpackPremultiplyAlpha.setDefault(),this.context.pixelStoreUnpackFlipY.setDefault();}setBaseState(){const e=this.context.gl;this.context.cullFace.set(!1),this.context.viewport.set([0,0,this.width,this.height]),this.context.blendEquation.set(e.FUNC_ADD);}initDebugOverlayCanvas(){null==this.debugOverlayCanvas&&(this.debugOverlayCanvas=document.createElement("canvas"),this.debugOverlayCanvas.width=512,this.debugOverlayCanvas.height=512,this.debugOverlayTexture=new y(this.context,this.debugOverlayCanvas,this.context.gl.RGBA));}destroy(){this.debugOverlayTexture&&this.debugOverlayTexture.destroy();}overLimit(){const{drawingBufferWidth:e,drawingBufferHeight:t}=this.context.gl;return this.width!==e||this.height!==t}}function Io(e,t){let i,r=!1,o=null,a=null;const s=()=>{o=null,r&&(e.apply(a,i),o=setTimeout(s,t),r=!1);};return (...e)=>(r=!0,a=this,i=e,o||s(),o)}class Co{constructor(e){this._getCurrentHash=()=>{const e=window.location.hash.replace("#","");if(this._hashName){let t;return e.split("&").map((e=>e.split("="))).forEach((e=>{e[0]===this._hashName&&(t=e);})),(t&&t[1]||"").split("/")}return e.split("/")},this._onHashChange=()=>{const e=this._getCurrentHash();if(e.length>=3&&!e.some((e=>isNaN(e)))){const t=this._map.dragRotate.isEnabled()&&this._map.touchZoomRotate.isEnabled()?+(e[3]||0):this._map.getBearing();return this._map.jumpTo({center:[+e[2],+e[1]],zoom:+e[0],bearing:t,pitch:+(e[4]||0)}),!0}return !1},this._updateHashUnthrottled=()=>{const e=window.location.href.replace(/(#.*)?$/,this.getHashString());window.history.replaceState(window.history.state,null,e);},this._removeHash=()=>{const e=this._getCurrentHash();if(0===e.length)return;const t=e.join("/");let i=t;i.split("&").length>0&&(i=i.split("&")[0]),this._hashName&&(i=`${this._hashName}=${t}`);let r=window.location.hash.replace(i,"");r.startsWith("#&")?r=r.slice(0,1)+r.slice(2):"#"===r&&(r="");let o=window.location.href.replace(/(#.+)?$/,r);o=o.replace("&&","&"),window.history.replaceState(window.history.state,null,o);},this._updateHash=Io(this._updateHashUnthrottled,300),this._hashName=e&&encodeURIComponent(e);}addTo(e){return this._map=e,addEventListener("hashchange",this._onHashChange,!1),this._map.on("moveend",this._updateHash),this}remove(){return removeEventListener("hashchange",this._onHashChange,!1),this._map.off("moveend",this._updateHash),clearTimeout(this._updateHash()),this._removeHash(),delete this._map,this}getHashString(e){const t=this._map.getCenter(),i=Math.round(100*this._map.getZoom())/100,r=Math.ceil((i*Math.LN2+Math.log(512/360/.5))/Math.LN10),o=Math.pow(10,r),a=Math.round(t.lng*o)/o,s=Math.round(t.lat*o)/o,n=this._map.getBearing(),l=this._map.getPitch();let c="";if(c+=e?`/${a}/${s}/${i}`:`${i}/${s}/${a}`,(n||l)&&(c+="/"+Math.round(10*n)/10),l&&(c+=`/${Math.round(l)}`),this._hashName){const e=this._hashName;let t=!1;const i=window.location.hash.slice(1).split("&").map((i=>{const r=i.split("=")[0];return r===e?(t=!0,`${r}=${c}`):i})).filter((e=>e));return t||i.push(`${e}=${c}`),`#${i.join("&")}`}return `#${c}`}}const Mo={linearity:.3,easing:t.bezier(0,0,.3,1)},So=t.extend({deceleration:2500,maxSpeed:1400},Mo),Ro=t.extend({deceleration:20,maxSpeed:1400},Mo),Do=t.extend({deceleration:1e3,maxSpeed:360},Mo),zo=t.extend({deceleration:1e3,maxSpeed:90},Mo),Lo=t.extend({deceleration:1e3,maxSpeed:360},Mo);class Ao{constructor(e){this._map=e,this.clear();}clear(){this._inertiaBuffer=[];}record(e){this._drainInertiaBuffer(),this._inertiaBuffer.push({time:f.now(),settings:e});}_drainInertiaBuffer(){const e=this._inertiaBuffer,t=f.now();for(;e.length>0&&t-e[0].time>160;)e.shift();}_onMoveEnd(e){if(this._drainInertiaBuffer(),this._inertiaBuffer.length<2)return;const i={zoom:0,bearing:0,pitch:0,roll:0,pan:new t.Point(0,0),pinchAround:void 0,around:void 0};for(const{settings:e}of this._inertiaBuffer)i.zoom+=e.zoomDelta||0,i.bearing+=e.bearingDelta||0,i.pitch+=e.pitchDelta||0,i.roll+=e.rollDelta||0,e.panDelta&&i.pan._add(e.panDelta),e.around&&(i.around=e.around),e.pinchAround&&(i.pinchAround=e.pinchAround);const r=this._inertiaBuffer[this._inertiaBuffer.length-1].time-this._inertiaBuffer[0].time,o={};if(i.pan.mag()){const a=Fo(i.pan.mag(),r,t.extend({},So,e||{})),s=i.pan.mult(a.amount/i.pan.mag()),n=this._map.cameraHelper.handlePanInertia(s,this._map.transform);o.center=n.easingCenter,o.offset=n.easingOffset,ko(o,a);}if(i.zoom){const e=Fo(i.zoom,r,Ro);o.zoom=this._map.transform.zoom+e.amount,ko(o,e);}if(i.bearing){const e=Fo(i.bearing,r,Do);o.bearing=this._map.transform.bearing+t.clamp(e.amount,-179,179),ko(o,e);}if(i.pitch){const e=Fo(i.pitch,r,zo);o.pitch=this._map.transform.pitch+e.amount,ko(o,e);}if(i.roll){const e=Fo(i.roll,r,Lo);o.roll=this._map.transform.roll+t.clamp(e.amount,-179,179),ko(o,e);}if(o.zoom||o.bearing){const e=void 0===i.pinchAround?i.around:i.pinchAround;o.around=e?this._map.unproject(e):this._map.getCenter();}return this.clear(),t.extend(o,{noMoveStart:!0})}}function ko(e,t){(!e.duration||e.durationi.unproject(e))),n=a.reduce(((e,t,i,r)=>e.add(t.div(r.length))),new t.Point(0,0));super(e,{points:a,point:n,lngLats:s,lngLat:i.unproject(n),originalEvent:r}),this._defaultPrevented=!1;}}class Uo extends t.Event{preventDefault(){this._defaultPrevented=!0;}get defaultPrevented(){return this._defaultPrevented}constructor(e,t,i){super(e,{originalEvent:i}),this._defaultPrevented=!1;}}class jo{constructor(e,t){this._map=e,this._clickTolerance=t.clickTolerance;}reset(){delete this._mousedownPos;}wheel(e){return this._firePreventable(new Uo(e.type,this._map,e))}mousedown(e,t){return this._mousedownPos=t,this._firePreventable(new Bo(e.type,this._map,e))}mouseup(e){this._map.fire(new Bo(e.type,this._map,e));}click(e,t){this._mousedownPos&&this._mousedownPos.dist(t)>=this._clickTolerance||this._map.fire(new Bo(e.type,this._map,e));}dblclick(e){return this._firePreventable(new Bo(e.type,this._map,e))}mouseover(e){this._map.fire(new Bo(e.type,this._map,e));}mouseout(e){this._map.fire(new Bo(e.type,this._map,e));}touchstart(e){return this._firePreventable(new Oo(e.type,this._map,e))}touchmove(e){this._map.fire(new Oo(e.type,this._map,e));}touchend(e){this._map.fire(new Oo(e.type,this._map,e));}touchcancel(e){this._map.fire(new Oo(e.type,this._map,e));}_firePreventable(e){if(this._map.fire(e),e.defaultPrevented)return {}}isEnabled(){return !0}isActive(){return !1}enable(){}disable(){}}class No{constructor(e){this._map=e;}reset(){this._delayContextMenu=!1,this._ignoreContextMenu=!0,delete this._contextMenuEvent;}mousemove(e){this._map.fire(new Bo(e.type,this._map,e));}mousedown(){this._delayContextMenu=!0,this._ignoreContextMenu=!1;}mouseup(){this._delayContextMenu=!1,this._contextMenuEvent&&(this._map.fire(new Bo("contextmenu",this._map,this._contextMenuEvent)),delete this._contextMenuEvent);}contextmenu(e){this._delayContextMenu?this._contextMenuEvent=e:this._ignoreContextMenu||this._map.fire(new Bo(e.type,this._map,e)),this._map.listens("contextmenu")&&e.preventDefault();}isEnabled(){return !0}isActive(){return !1}enable(){}disable(){}}class Go{constructor(e){this._map=e;}get transform(){return this._map._requestedCameraState||this._map.transform}get center(){return {lng:this.transform.center.lng,lat:this.transform.center.lat}}get zoom(){return this.transform.zoom}get pitch(){return this.transform.pitch}get bearing(){return this.transform.bearing}unproject(e){return this.transform.screenPointToLocation(t.Point.convert(e),this._map.terrain)}}class Zo{constructor(e,t){this._map=e,this._tr=new Go(e),this._el=e.getCanvasContainer(),this._container=e.getContainer(),this._clickTolerance=t.clickTolerance||1;}isEnabled(){return !!this._enabled}isActive(){return !!this._active}enable(){this.isEnabled()||(this._enabled=!0);}disable(){this.isEnabled()&&(this._enabled=!1);}mousedown(e,t){this.isEnabled()&&e.shiftKey&&0===e.button&&(wi.disableDrag(),this._startPos=this._lastPos=t,this._active=!0);}mousemoveWindow(e,t){if(!this._active)return;const i=t;if(this._lastPos.equals(i)||!this._box&&i.dist(this._startPos)e.fitScreenCoordinates(r,o,this._tr.bearing,{linear:!0})};this._fireEvent("boxzoomcancel",e);}keydown(e){this._active&&27===e.keyCode&&(this.reset(),this._fireEvent("boxzoomcancel",e));}reset(){this._active=!1,this._container.classList.remove("maplibregl-crosshair"),this._box&&(wi.remove(this._box),this._box=null),wi.enableDrag(),delete this._startPos,delete this._lastPos;}_fireEvent(e,i){return this._map.fire(new t.Event(e,{originalEvent:i}))}}function Vo(e,t){if(e.length!==t.length)throw new Error(`The number of touches and points are not equal - touches ${e.length}, points ${t.length}`);const i={};for(let r=0;rthis.numTouches)&&(this.aborted=!0),this.aborted||(void 0===this.startTime&&(this.startTime=e.timeStamp),r.length===this.numTouches&&(this.centroid=function(e){const i=new t.Point(0,0);for(const t of e)i._add(t);return i.div(e.length)}(i),this.touches=Vo(r,i)));}touchmove(e,t,i){if(this.aborted||!this.centroid)return;const r=Vo(i,t);for(const e in this.touches){const t=r[e];(!t||t.dist(this.touches[e])>30)&&(this.aborted=!0);}}touchend(e,t,i){if((!this.centroid||e.timeStamp-this.startTime>500)&&(this.aborted=!0),0===i.length){const e=!this.aborted&&this.centroid;if(this.reset(),e)return e}}}class Wo{constructor(e){this.singleTap=new qo(e),this.numTaps=e.numTaps,this.reset();}reset(){this.lastTime=1/0,delete this.lastTap,this.count=0,this.singleTap.reset();}touchstart(e,t,i){this.singleTap.touchstart(e,t,i);}touchmove(e,t,i){this.singleTap.touchmove(e,t,i);}touchend(e,t,i){const r=this.singleTap.touchend(e,t,i);if(r){const t=e.timeStamp-this.lastTime<500,i=!this.lastTap||this.lastTap.dist(r)<30;if(t&&i||this.reset(),this.count++,this.lastTime=e.timeStamp,this.lastTap=r,this.count===this.numTaps)return this.reset(),r}}}class Xo{constructor(e){this._tr=new Go(e),this._zoomIn=new Wo({numTouches:1,numTaps:2}),this._zoomOut=new Wo({numTouches:2,numTaps:1}),this.reset();}reset(){this._active=!1,this._zoomIn.reset(),this._zoomOut.reset();}touchstart(e,t,i){this._zoomIn.touchstart(e,t,i),this._zoomOut.touchstart(e,t,i);}touchmove(e,t,i){this._zoomIn.touchmove(e,t,i),this._zoomOut.touchmove(e,t,i);}touchend(e,t,i){const r=this._zoomIn.touchend(e,t,i),o=this._zoomOut.touchend(e,t,i),a=this._tr;return r?(this._active=!0,e.preventDefault(),setTimeout((()=>this.reset()),0),{cameraAnimation:t=>t.easeTo({duration:300,zoom:a.zoom+1,around:a.unproject(r)},{originalEvent:e})}):o?(this._active=!0,e.preventDefault(),setTimeout((()=>this.reset()),0),{cameraAnimation:t=>t.easeTo({duration:300,zoom:a.zoom-1,around:a.unproject(o)},{originalEvent:e})}):void 0}touchcancel(){this.reset();}enable(){this._enabled=!0;}disable(){this._enabled=!1,this.reset();}isEnabled(){return this._enabled}isActive(){return this._active}}class $o{constructor(e){this._enabled=!!e.enable,this._moveStateManager=e.moveStateManager,this._clickTolerance=e.clickTolerance||1,this._moveFunction=e.move,this._activateOnStart=!!e.activateOnStart,e.assignEvents(this),this.reset();}reset(e){this._active=!1,this._moved=!1,delete this._lastPoint,this._moveStateManager.endMove(e);}_move(...e){const t=this._moveFunction(...e);if(t.bearingDelta||t.pitchDelta||t.rollDelta||t.around||t.panDelta)return this._active=!0,t}dragStart(e,t){this.isEnabled()&&!this._lastPoint&&this._moveStateManager.isValidStartEvent(e)&&(this._moveStateManager.startMove(e),this._lastPoint=Array.isArray(t)?t[0]:t,this._activateOnStart&&this._lastPoint&&(this._active=!0));}dragMove(e,t){if(!this.isEnabled())return;const i=this._lastPoint;if(!i)return;if(e.preventDefault(),!this._moveStateManager.isValidMoveEvent(e))return void this.reset(e);const r=Array.isArray(t)?t[0]:t;return !this._moved&&r.dist(i)!0}),t=new Yo){this.mouseMoveStateManager=e,this.oneFingerTouchMoveStateManager=t;}startMove(e){e instanceof MouseEvent&&this.mouseMoveStateManager.startMove(e),e instanceof TouchEvent&&this.oneFingerTouchMoveStateManager.startMove(e);}endMove(e){e instanceof MouseEvent&&this.mouseMoveStateManager.endMove(e),e instanceof TouchEvent&&this.oneFingerTouchMoveStateManager.endMove(e);}isValidStartEvent(e){return e instanceof MouseEvent?this.mouseMoveStateManager.isValidStartEvent(e):e instanceof TouchEvent?this.oneFingerTouchMoveStateManager.isValidStartEvent(e):void 0}isValidMoveEvent(e){return e instanceof MouseEvent?this.mouseMoveStateManager.isValidMoveEvent(e):e instanceof TouchEvent?this.oneFingerTouchMoveStateManager.isValidMoveEvent(e):void 0}isValidEndEvent(e){return e instanceof MouseEvent?this.mouseMoveStateManager.isValidEndEvent(e):e instanceof TouchEvent?this.oneFingerTouchMoveStateManager.isValidEndEvent(e):void 0}}const Qo=e=>{e.mousedown=e.dragStart,e.mousemoveWindow=e.dragMove,e.mouseup=e.dragEnd,e.contextmenu=e=>{e.preventDefault();};};class ea{constructor(e,t){this._clickTolerance=e.clickTolerance||1,this._map=t,this.reset();}reset(){this._active=!1,this._touches={},this._sum=new t.Point(0,0);}_shouldBePrevented(e){return e<(this._map.cooperativeGestures.isEnabled()?2:1)}touchstart(e,t,i){return this._calculateTransform(e,t,i)}touchmove(e,t,i){if(this._active){if(!this._shouldBePrevented(i.length))return e.preventDefault(),this._calculateTransform(e,t,i);this._map.cooperativeGestures.notifyGestureBlocked("touch_pan",e);}}touchend(e,t,i){this._calculateTransform(e,t,i),this._active&&this._shouldBePrevented(i.length)&&this.reset();}touchcancel(){this.reset();}_calculateTransform(e,i,r){r.length>0&&(this._active=!0);const o=Vo(r,i),a=new t.Point(0,0),s=new t.Point(0,0);let n=0;for(const e in o){const t=o[e],i=this._touches[e];i&&(a._add(t),s._add(t.sub(i)),n++,o[e]=t);}if(this._touches=o,this._shouldBePrevented(n)||!s.mag())return;const l=s.div(n);return this._sum._add(l),this._sum.mag()Math.abs(e.x)}class la extends ta{constructor(e){super(),this._currentTouchCount=0,this._map=e;}reset(){super.reset(),this._valid=void 0,delete this._firstMove,delete this._lastPoints;}touchstart(e,t,i){super.touchstart(e,t,i),this._currentTouchCount=i.length;}_start(e){this._lastPoints=e,na(e[0].sub(e[1]))&&(this._valid=!1);}_move(e,t,i){if(this._map.cooperativeGestures.isEnabled()&&this._currentTouchCount<3)return;const r=e[0].sub(this._lastPoints[0]),o=e[1].sub(this._lastPoints[1]);return this._valid=this.gestureBeginsVertically(r,o,i.timeStamp),this._valid?(this._lastPoints=e,this._active=!0,{pitchDelta:(r.y+o.y)/2*-.5}):void 0}gestureBeginsVertically(e,t,i){if(void 0!==this._valid)return this._valid;const r=e.mag()>=2,o=t.mag()>=2;if(!r&&!o)return;if(!r||!o)return void 0===this._firstMove&&(this._firstMove=i),i-this._firstMove<100&&void 0;const a=e.y>0==t.y>0;return na(e)&&na(t)&&a}}const ca={panStep:100,bearingStep:15,pitchStep:10};class ha{constructor(e){this._tr=new Go(e);const t=ca;this._panStep=t.panStep,this._bearingStep=t.bearingStep,this._pitchStep=t.pitchStep,this._rotationDisabled=!1;}reset(){this._active=!1;}keydown(e){if(e.altKey||e.ctrlKey||e.metaKey)return;let t=0,i=0,r=0,o=0,a=0;switch(e.keyCode){case 61:case 107:case 171:case 187:t=1;break;case 189:case 109:case 173:t=-1;break;case 37:e.shiftKey?i=-1:(e.preventDefault(),o=-1);break;case 39:e.shiftKey?i=1:(e.preventDefault(),o=1);break;case 38:e.shiftKey?r=1:(e.preventDefault(),a=-1);break;case 40:e.shiftKey?r=-1:(e.preventDefault(),a=1);break;default:return}return this._rotationDisabled&&(i=0,r=0),{cameraAnimation:s=>{const n=this._tr;s.easeTo({duration:300,easeId:"keyboardHandler",easing:ua,zoom:t?Math.round(n.zoom)+t*(e.shiftKey?2:1):n.zoom,bearing:n.bearing+i*this._bearingStep,pitch:n.pitch+r*this._pitchStep,offset:[-o*this._panStep,-a*this._panStep],center:n.center},{originalEvent:e});}}}enable(){this._enabled=!0;}disable(){this._enabled=!1,this.reset();}isEnabled(){return this._enabled}isActive(){return this._active}disableRotation(){this._rotationDisabled=!0;}enableRotation(){this._rotationDisabled=!1;}}function ua(e){return e*(2-e)}const da=4.000244140625;class _a{constructor(e,t){this._onTimeout=e=>{this._type="wheel",this._delta-=this._lastValue,this._active||this._start(e);},this._map=e,this._tr=new Go(e),this._triggerRenderFrame=t,this._delta=0,this._defaultZoomRate=.01,this._wheelZoomRate=.0022222222222222222;}setZoomRate(e){this._defaultZoomRate=e;}setWheelZoomRate(e){this._wheelZoomRate=e;}isEnabled(){return !!this._enabled}isActive(){return !!this._active||void 0!==this._finishTimeout}isZooming(){return !!this._zooming}enable(e){this.isEnabled()||(this._enabled=!0,this._aroundCenter=!!e&&"center"===e.around);}disable(){this.isEnabled()&&(this._enabled=!1);}_shouldBePrevented(e){return !!this._map.cooperativeGestures.isEnabled()&&!(e.ctrlKey||this._map.cooperativeGestures.isBypassed(e))}wheel(e){if(!this.isEnabled())return;if(this._shouldBePrevented(e))return void this._map.cooperativeGestures.notifyGestureBlocked("wheel_zoom",e);let t=e.deltaMode===WheelEvent.DOM_DELTA_LINE?40*e.deltaY:e.deltaY;const i=f.now(),r=i-(this._lastWheelEventTime||0);this._lastWheelEventTime=i,0!==t&&t%da==0?this._type="wheel":0!==t&&Math.abs(t)<4?this._type="trackpad":r>400?(this._type=null,this._lastValue=t,this._timeout=setTimeout(this._onTimeout,40,e)):this._type||(this._type=Math.abs(r*t)<200?"trackpad":"wheel",this._timeout&&(clearTimeout(this._timeout),this._timeout=null,t+=this._lastValue)),e.shiftKey&&t&&(t/=4),this._type&&(this._lastWheelEvent=e,this._delta-=t,this._active||this._start(e)),e.preventDefault();}_start(e){if(!this._delta)return;this._frameId&&(this._frameId=null),this._active=!0,this.isZooming()||(this._zooming=!0),this._finishTimeout&&(clearTimeout(this._finishTimeout),delete this._finishTimeout);const i=wi.mousePos(this._map.getCanvas(),e),r=this._tr;this._aroundPoint=this._aroundCenter?r.transform.locationToScreenPoint(t.LngLat.convert(r.center)):i,this._frameId||(this._frameId=!0,this._triggerRenderFrame());}renderFrame(){if(!this._frameId)return;if(this._frameId=null,!this.isActive())return;const e=this._tr.transform;if("number"==typeof this._lastExpectedZoom){const t=e.zoom-this._lastExpectedZoom;"number"==typeof this._startZoom&&(this._startZoom+=t),"number"==typeof this._targetZoom&&(this._targetZoom+=t);}if(0!==this._delta){const t="wheel"===this._type&&Math.abs(this._delta)>da?this._wheelZoomRate:this._defaultZoomRate;let i=2/(1+Math.exp(-Math.abs(this._delta*t)));this._delta<0&&0!==i&&(i=1/i);const r="number"!=typeof this._targetZoom?e.scale:ue(this._targetZoom);this._targetZoom=Math.min(e.maxZoom,Math.max(e.minZoom,de(r*i))),"wheel"===this._type&&(this._startZoom=e.zoom,this._easing=this._smoothOutEasing(200)),this._delta=0;}const i="number"!=typeof this._targetZoom?e.zoom:this._targetZoom,r=this._startZoom,o=this._easing;let a,s=!1;const n=f.now()-this._lastWheelEventTime;if("wheel"===this._type&&r&&o&&n){const e=Math.min(n/200,1),l=o(e);a=t.interpolateFactory.number(r,i,l),e<1?this._frameId||(this._frameId=!0):s=!0;}else a=i,s=!0;return this._active=!0,s&&(this._active=!1,this._finishTimeout=setTimeout((()=>{this._zooming=!1,this._triggerRenderFrame(),delete this._targetZoom,delete this._lastExpectedZoom,delete this._finishTimeout;}),200)),this._lastExpectedZoom=a,{noInertia:!0,needsRenderFrame:!s,zoomDelta:a-e.zoom,around:this._aroundPoint,originalEvent:this._lastWheelEvent}}_smoothOutEasing(e){let i=t.defaultEasing;if(this._prevEase){const e=this._prevEase,r=(f.now()-e.start)/e.duration,o=e.easing(r+.01)-e.easing(r),a=.27/Math.sqrt(o*o+1e-4)*.01,s=Math.sqrt(.0729-a*a);i=t.bezier(a,s,.25,1);}return this._prevEase={start:f.now(),duration:e,easing:i},i}reset(){this._active=!1,this._zooming=!1,delete this._targetZoom,delete this._lastExpectedZoom,this._finishTimeout&&(clearTimeout(this._finishTimeout),delete this._finishTimeout);}}class pa{constructor(e,t){this._clickZoom=e,this._tapZoom=t;}enable(){this._clickZoom.enable(),this._tapZoom.enable();}disable(){this._clickZoom.disable(),this._tapZoom.disable();}isEnabled(){return this._clickZoom.isEnabled()&&this._tapZoom.isEnabled()}isActive(){return this._clickZoom.isActive()||this._tapZoom.isActive()}}class ma{constructor(e){this._tr=new Go(e),this.reset();}reset(){this._active=!1;}dblclick(e,t){return e.preventDefault(),{cameraAnimation:i=>{i.easeTo({duration:300,zoom:this._tr.zoom+(e.shiftKey?-1:1),around:this._tr.unproject(t)},{originalEvent:e});}}}enable(){this._enabled=!0;}disable(){this._enabled=!1,this.reset();}isEnabled(){return this._enabled}isActive(){return this._active}}class fa{constructor(){this._tap=new Wo({numTouches:1,numTaps:1}),this.reset();}reset(){this._active=!1,delete this._swipePoint,delete this._swipeTouch,delete this._tapTime,delete this._tapPoint,this._tap.reset();}touchstart(e,t,i){if(!this._swipePoint)if(this._tapTime){const r=t[0],o=e.timeStamp-this._tapTime<500,a=this._tapPoint.dist(r)<30;o&&a?i.length>0&&(this._swipePoint=r,this._swipeTouch=i[0].identifier):this.reset();}else this._tap.touchstart(e,t,i);}touchmove(e,t,i){if(this._tapTime){if(this._swipePoint){if(i[0].identifier!==this._swipeTouch)return;const r=t[0],o=r.y-this._swipePoint.y;return this._swipePoint=r,e.preventDefault(),this._active=!0,{zoomDelta:o/128}}}else this._tap.touchmove(e,t,i);}touchend(e,t,i){if(this._tapTime)this._swipePoint&&0===i.length&&this.reset();else {const r=this._tap.touchend(e,t,i);r&&(this._tapTime=e.timeStamp,this._tapPoint=r);}}touchcancel(){this.reset();}enable(){this._enabled=!0;}disable(){this._enabled=!1,this.reset();}isEnabled(){return this._enabled}isActive(){return this._active}}class ga{constructor(e,t,i){this._el=e,this._mousePan=t,this._touchPan=i;}enable(e){this._inertiaOptions=e||{},this._mousePan.enable(),this._touchPan.enable(),this._el.classList.add("maplibregl-touch-drag-pan");}disable(){this._mousePan.disable(),this._touchPan.disable(),this._el.classList.remove("maplibregl-touch-drag-pan");}isEnabled(){return this._mousePan.isEnabled()&&this._touchPan.isEnabled()}isActive(){return this._mousePan.isActive()||this._touchPan.isActive()}}class va{constructor(e,t,i,r){this._pitchWithRotate=e.pitchWithRotate,this._rollEnabled=e.rollEnabled,this._mouseRotate=t,this._mousePitch=i,this._mouseRoll=r;}enable(){this._mouseRotate.enable(),this._pitchWithRotate&&this._mousePitch.enable(),this._rollEnabled&&this._mouseRoll.enable();}disable(){this._mouseRotate.disable(),this._mousePitch.disable(),this._mouseRoll.disable();}isEnabled(){return this._mouseRotate.isEnabled()&&(!this._pitchWithRotate||this._mousePitch.isEnabled())&&(!this._rollEnabled||this._mouseRoll.isEnabled())}isActive(){return this._mouseRotate.isActive()||this._mousePitch.isActive()||this._mouseRoll.isActive()}}class ya{constructor(e,t,i,r){this._el=e,this._touchZoom=t,this._touchRotate=i,this._tapDragZoom=r,this._rotationDisabled=!1,this._enabled=!0;}enable(e){this._touchZoom.enable(e),this._rotationDisabled||this._touchRotate.enable(e),this._tapDragZoom.enable(),this._el.classList.add("maplibregl-touch-zoom-rotate");}disable(){this._touchZoom.disable(),this._touchRotate.disable(),this._tapDragZoom.disable(),this._el.classList.remove("maplibregl-touch-zoom-rotate");}isEnabled(){return this._touchZoom.isEnabled()&&(this._rotationDisabled||this._touchRotate.isEnabled())&&this._tapDragZoom.isEnabled()}isActive(){return this._touchZoom.isActive()||this._touchRotate.isActive()||this._tapDragZoom.isActive()}disableRotation(){this._rotationDisabled=!0,this._touchRotate.disable();}enableRotation(){this._rotationDisabled=!1,this._touchZoom.isEnabled()&&this._touchRotate.enable();}}class xa{constructor(e,t){this._bypassKey=-1!==navigator.userAgent.indexOf("Mac")?"metaKey":"ctrlKey",this._map=e,this._options=t,this._enabled=!1;}isActive(){return !1}reset(){}_setupUI(){if(this._container)return;const e=this._map.getCanvasContainer();e.classList.add("maplibregl-cooperative-gestures"),this._container=wi.create("div","maplibregl-cooperative-gesture-screen",e);let t=this._map._getUIString("CooperativeGesturesHandler.WindowsHelpText");"metaKey"===this._bypassKey&&(t=this._map._getUIString("CooperativeGesturesHandler.MacHelpText"));const i=this._map._getUIString("CooperativeGesturesHandler.MobileHelpText"),r=document.createElement("div");r.className="maplibregl-desktop-message",r.textContent=t,this._container.appendChild(r);const o=document.createElement("div");o.className="maplibregl-mobile-message",o.textContent=i,this._container.appendChild(o),this._container.setAttribute("aria-hidden","true");}_destroyUI(){this._container&&(wi.remove(this._container),this._map.getCanvasContainer().classList.remove("maplibregl-cooperative-gestures")),delete this._container;}enable(){this._setupUI(),this._enabled=!0;}disable(){this._enabled=!1,this._destroyUI();}isEnabled(){return this._enabled}isBypassed(e){return e[this._bypassKey]}notifyGestureBlocked(e,i){this._enabled&&(this._map.fire(new t.Event("cooperativegestureprevented",{gestureType:e,originalEvent:i})),this._container.classList.add("maplibregl-show"),setTimeout((()=>{this._container.classList.remove("maplibregl-show");}),100));}}const ba=e=>e.zoom||e.drag||e.roll||e.pitch||e.rotate;class wa extends t.Event{}function Ta(e){return e.panDelta&&e.panDelta.mag()||e.zoomDelta||e.bearingDelta||e.pitchDelta||e.rollDelta}class Ea{constructor(e,t){this.handleWindowEvent=e=>{this.handleEvent(e,`${e.type}Window`);},this.handleEvent=(e,t)=>{if("blur"===e.type)return void this.stop(!0);this._updatingCamera=!0;const i="renderFrame"===e.type?void 0:e,r={needsRenderFrame:!1},o={},a={},s=e.touches,n=s?this._getMapTouches(s):void 0,l=n?wi.touchPos(this._map.getCanvas(),n):wi.mousePos(this._map.getCanvas(),e);for(const{handlerName:s,handler:c,allowed:h}of this._handlers){if(!c.isEnabled())continue;let u;this._blockedByActive(a,h,s)?c.reset():c[t||e.type]&&(u=c[t||e.type](e,l,n),this.mergeHandlerResult(r,o,u,s,i),u&&u.needsRenderFrame&&this._triggerRenderFrame()),(u||c.isActive())&&(a[s]=c);}const c={};for(const e in this._previousActiveHandlers)a[e]||(c[e]=i);this._previousActiveHandlers=a,(Object.keys(c).length||Ta(r))&&(this._changes.push([r,o,c]),this._triggerRenderFrame()),(Object.keys(a).length||Ta(r))&&this._map._stop(!0),this._updatingCamera=!1;const{cameraAnimation:h}=r;h&&(this._inertia.clear(),this._fireEvents({},{},!0),this._changes=[],h(this._map));},this._map=e,this._el=this._map.getCanvasContainer(),this._handlers=[],this._handlersById={},this._changes=[],this._inertia=new Ao(e),this._bearingSnap=t.bearingSnap,this._previousActiveHandlers={},this._eventsInProgress={},this._addDefaultHandlers(t);const i=this._el;this._listeners=[[i,"touchstart",{passive:!0}],[i,"touchmove",{passive:!1}],[i,"touchend",void 0],[i,"touchcancel",void 0],[i,"mousedown",void 0],[i,"mousemove",void 0],[i,"mouseup",void 0],[document,"mousemove",{capture:!0}],[document,"mouseup",void 0],[i,"mouseover",void 0],[i,"mouseout",void 0],[i,"dblclick",void 0],[i,"click",void 0],[i,"keydown",{capture:!1}],[i,"keyup",void 0],[i,"wheel",{passive:!1}],[i,"contextmenu",void 0],[window,"blur",void 0]];for(const[e,t,i]of this._listeners)wi.addEventListener(e,t,e===document?this.handleWindowEvent:this.handleEvent,i);}destroy(){for(const[e,t,i]of this._listeners)wi.removeEventListener(e,t,e===document?this.handleWindowEvent:this.handleEvent,i);}_addDefaultHandlers(e){const i=this._map,r=i.getCanvasContainer();this._add("mapEvent",new jo(i,e));const o=i.boxZoom=new Zo(i,e);this._add("boxZoom",o),e.interactive&&e.boxZoom&&o.enable();const a=i.cooperativeGestures=new xa(i,e.cooperativeGestures);this._add("cooperativeGestures",a),e.cooperativeGestures&&a.enable();const s=new Xo(i),n=new ma(i);i.doubleClickZoom=new pa(n,s),this._add("tapZoom",s),this._add("clickZoom",n),e.interactive&&e.doubleClickZoom&&i.doubleClickZoom.enable();const l=new fa;this._add("tapDragZoom",l);const c=i.touchPitch=new la(i);this._add("touchPitch",c),e.interactive&&e.touchPitch&&i.touchPitch.enable(e.touchPitch);const h=()=>i.project(i.getCenter()),u=function({enable:e,clickTolerance:i,aroundCenter:r=!0,minPixelCenterThreshold:o=100,rotateDegreesPerPixelMoved:a=.8},s){const n=new Ko({checkCorrectEvent:e=>0===wi.mouseButton(e)&&e.ctrlKey||2===wi.mouseButton(e)&&!e.ctrlKey});return new $o({clickTolerance:i,move:(e,i)=>{const n=s();if(r&&Math.abs(n.y-e.y)>o)return {bearingDelta:t.getAngleDelta(new t.Point(e.x,i.y),i,n)};let l=(i.x-e.x)*a;return r&&i.y0===wi.mouseButton(e)&&e.ctrlKey||2===wi.mouseButton(e)});return new $o({clickTolerance:t,move:(e,t)=>({pitchDelta:(t.y-e.y)*i}),moveStateManager:r,enable:e,assignEvents:Qo})}(e),_=function({enable:e,clickTolerance:t,rollDegreesPerPixelMoved:i=.3},r){const o=new Ko({checkCorrectEvent:e=>2===wi.mouseButton(e)&&e.ctrlKey});return new $o({clickTolerance:t,move:(e,t)=>{const o=r();let a=(t.x-e.x)*i;return t.y0===wi.mouseButton(e)&&!e.ctrlKey});return new $o({clickTolerance:t,move:(e,t)=>({around:t,panDelta:t.sub(e)}),activateOnStart:!0,moveStateManager:i,enable:e,assignEvents:Qo})}(e),m=new ea(e,i);i.dragPan=new ga(r,p,m),this._add("mousePan",p),this._add("touchPan",m,["touchZoom","touchRotate"]),e.interactive&&e.dragPan&&i.dragPan.enable(e.dragPan);const f=new sa,g=new oa;i.touchZoomRotate=new ya(r,g,f,l),this._add("touchRotate",f,["touchPan","touchZoom"]),this._add("touchZoom",g,["touchPan","touchRotate"]),e.interactive&&e.touchZoomRotate&&i.touchZoomRotate.enable(e.touchZoomRotate);const v=i.scrollZoom=new _a(i,(()=>this._triggerRenderFrame()));this._add("scrollZoom",v,["mousePan"]),e.interactive&&e.scrollZoom&&i.scrollZoom.enable(e.scrollZoom);const y=i.keyboard=new ha(i);this._add("keyboard",y),e.interactive&&e.keyboard&&i.keyboard.enable(),this._add("blockableMapEvent",new No(i));}_add(e,t,i){this._handlers.push({handlerName:e,handler:t,allowed:i}),this._handlersById[e]=t;}stop(e){if(!this._updatingCamera){for(const{handler:e}of this._handlers)e.reset();this._inertia.clear(),this._fireEvents({},{},e),this._changes=[];}}isActive(){for(const{handler:e}of this._handlers)if(e.isActive())return !0;return !1}isZooming(){return !!this._eventsInProgress.zoom||this._map.scrollZoom.isZooming()}isRotating(){return !!this._eventsInProgress.rotate}isMoving(){return Boolean(ba(this._eventsInProgress))||this.isZooming()}_blockedByActive(e,t,i){for(const r in e)if(r!==i&&(!t||t.indexOf(r)<0))return !0;return !1}_getMapTouches(e){const t=[];for(const i of e)this._el.contains(i.target)&&t.push(i);return t}mergeHandlerResult(e,i,r,o,a){if(!r)return;t.extend(e,r);const s={handlerName:o,originalEvent:r.originalEvent||a};void 0!==r.zoomDelta&&(i.zoom=s),void 0!==r.panDelta&&(i.drag=s),void 0!==r.rollDelta&&(i.roll=s),void 0!==r.pitchDelta&&(i.pitch=s),void 0!==r.bearingDelta&&(i.rotate=s);}_applyChanges(){const e={},i={},r={};for(const[o,a,s]of this._changes)o.panDelta&&(e.panDelta=(e.panDelta||new t.Point(0,0))._add(o.panDelta)),o.zoomDelta&&(e.zoomDelta=(e.zoomDelta||0)+o.zoomDelta),o.bearingDelta&&(e.bearingDelta=(e.bearingDelta||0)+o.bearingDelta),o.pitchDelta&&(e.pitchDelta=(e.pitchDelta||0)+o.pitchDelta),o.rollDelta&&(e.rollDelta=(e.rollDelta||0)+o.rollDelta),void 0!==o.around&&(e.around=o.around),void 0!==o.pinchAround&&(e.pinchAround=o.pinchAround),o.noInertia&&(e.noInertia=o.noInertia),t.extend(i,a),t.extend(r,s);this._updateMapTransform(e,i,r),this._changes=[];}_updateMapTransform(e,t,i){const r=this._map,o=r._getTransformForUpdate(),a=r.terrain;if(!(Ta(e)||a&&this._terrainMovement))return this._fireEvents(t,i,!0);r._stop(!0);let{panDelta:s,zoomDelta:n,bearingDelta:l,pitchDelta:c,rollDelta:h,around:u,pinchAround:d}=e;void 0!==d&&(u=d),u=u||r.transform.centerPoint,a&&!o.isPointOnMapSurface(u)&&(u=o.centerPoint);const _={panDelta:s,zoomDelta:n,rollDelta:h,pitchDelta:c,bearingDelta:l,around:u};this._map.cameraHelper.useGlobeControls&&!o.isPointOnMapSurface(u)&&(u=o.centerPoint);const p=u.distSqr(o.centerPoint)<.01?o.center:o.screenPointToLocation(s?u.sub(s):u);a?(this._map.cameraHelper.handleMapControlsRollPitchBearingZoom(_,o),this._terrainMovement||!t.drag&&!t.zoom?t.drag&&this._terrainMovement?o.setCenter(o.screenPointToLocation(o.centerPoint.sub(s))):this._map.cameraHelper.handleMapControlsPan(_,o,p):(this._terrainMovement=!0,this._map._elevationFreeze=!0,this._map.cameraHelper.handleMapControlsPan(_,o,p))):(this._map.cameraHelper.handleMapControlsRollPitchBearingZoom(_,o),this._map.cameraHelper.handleMapControlsPan(_,o,p)),r._applyUpdatedTransform(o),this._map._update(),e.noInertia||this._inertia.record(e),this._fireEvents(t,i,!0);}_fireEvents(e,i,r){const o=ba(this._eventsInProgress),a=ba(e),s={};for(const t in e){const{originalEvent:i}=e[t];this._eventsInProgress[t]||(s[`${t}start`]=i),this._eventsInProgress[t]=e[t];}!o&&a&&this._fireEvent("movestart",a.originalEvent);for(const e in s)this._fireEvent(e,s[e]);a&&this._fireEvent("move",a.originalEvent);for(const t in e){const{originalEvent:i}=e[t];this._fireEvent(t,i);}const n={};let l;for(const e in this._eventsInProgress){const{handlerName:t,originalEvent:r}=this._eventsInProgress[e];this._handlersById[t].isActive()||(delete this._eventsInProgress[e],l=i[t]||r,n[`${e}end`]=l);}for(const e in n)this._fireEvent(e,n[e]);const c=ba(this._eventsInProgress),h=(o||a)&&!c;if(h&&this._terrainMovement){this._map._elevationFreeze=!1,this._terrainMovement=!1;const e=this._map._getTransformForUpdate();this._map.getCenterClampedToGround()&&e.recalculateZoomAndCenter(this._map.terrain),this._map._applyUpdatedTransform(e);}if(r&&h){this._updatingCamera=!0;const e=this._inertia._onMoveEnd(this._map.dragPan._inertiaOptions),i=e=>0!==e&&-this._bearingSnap{delete this._frameId,this.handleEvent(new wa("renderFrame",{timeStamp:e})),this._applyChanges();}))}_triggerRenderFrame(){void 0===this._frameId&&(this._frameId=this._requestFrame());}}class Pa extends t.Evented{constructor(e,t,i){super(),this._renderFrameCallback=()=>{const e=Math.min((f.now()-this._easeStart)/this._easeOptions.duration,1);this._onEaseFrame(this._easeOptions.easing(e)),e<1&&this._easeFrameId?this._easeFrameId=this._requestRenderFrame(this._renderFrameCallback):this.stop();},this._moving=!1,this._zooming=!1,this.transform=e,this._bearingSnap=i.bearingSnap,this.cameraHelper=t,this.on("moveend",(()=>{delete this._requestedCameraState;}));}migrateProjection(e,t){e.apply(this.transform),this.transform=e,this.cameraHelper=t;}getCenter(){return new t.LngLat(this.transform.center.lng,this.transform.center.lat)}setCenter(e,t){return this.jumpTo({center:e},t)}getCenterElevation(){return this.transform.elevation}setCenterElevation(e,t){return this.jumpTo({elevation:e},t),this}getCenterClampedToGround(){return this._centerClampedToGround}setCenterClampedToGround(e){this._centerClampedToGround=e;}panBy(e,i,r){return e=t.Point.convert(e).mult(-1),this.panTo(this.transform.center,t.extend({offset:e},i),r)}panTo(e,i,r){return this.easeTo(t.extend({center:e},i),r)}getZoom(){return this.transform.zoom}setZoom(e,t){return this.jumpTo({zoom:e},t),this}zoomTo(e,i,r){return this.easeTo(t.extend({zoom:e},i),r)}zoomIn(e,t){return this.zoomTo(this.getZoom()+1,e,t),this}zoomOut(e,t){return this.zoomTo(this.getZoom()-1,e,t),this}getVerticalFieldOfView(){return this.transform.fov}setVerticalFieldOfView(e,i){return e!=this.transform.fov&&(this.transform.setFov(e),this.fire(new t.Event("movestart",i)).fire(new t.Event("move",i)).fire(new t.Event("moveend",i))),this}getBearing(){return this.transform.bearing}setBearing(e,t){return this.jumpTo({bearing:e},t),this}getPadding(){return this.transform.padding}setPadding(e,t){return this.jumpTo({padding:e},t),this}rotateTo(e,i,r){return this.easeTo(t.extend({bearing:e},i),r)}resetNorth(e,i){return this.rotateTo(0,t.extend({duration:1e3},e),i),this}resetNorthPitch(e,i){return this.easeTo(t.extend({bearing:0,pitch:0,roll:0,duration:1e3},e),i),this}snapToNorth(e,t){return Math.abs(this.getBearing()){m.easeFunc(t),this.terrain&&!e.freezeElevation&&this._updateElevation(t),this._applyUpdatedTransform(r),this._fireMoveEvents(i);}),(t=>{this.terrain&&e.freezeElevation&&this._finalizeElevation(),this._afterEase(i,t);}),e),this}_prepareEase(e,i,r={}){this._moving=!0,i||r.moving||this.fire(new t.Event("movestart",e)),this._zooming&&!r.zooming&&this.fire(new t.Event("zoomstart",e)),this._rotating&&!r.rotating&&this.fire(new t.Event("rotatestart",e)),this._pitching&&!r.pitching&&this.fire(new t.Event("pitchstart",e)),this._rolling&&!r.rolling&&this.fire(new t.Event("rollstart",e));}_prepareElevation(e){this._elevationCenter=e,this._elevationStart=this.transform.elevation,this._elevationTarget=this.terrain.getElevationForLngLatZoom(e,this.transform.tileZoom),this._elevationFreeze=!0;}_updateElevation(e){this.transform.setMinElevationForCurrentTile(this.terrain.getMinTileElevationForLngLatZoom(this._elevationCenter,this.transform.tileZoom));const i=this.terrain.getElevationForLngLatZoom(this._elevationCenter,this.transform.tileZoom);if(e<1&&i!==this._elevationTarget){const t=this._elevationTarget-this._elevationStart;this._elevationStart+=e*(t-(i-(t*e+this._elevationStart))/(1-e)),this._elevationTarget=i;}this.transform.setElevation(t.interpolateFactory.number(this._elevationStart,this._elevationTarget,e));}_finalizeElevation(){this._elevationFreeze=!1,this.getCenterClampedToGround()&&this.transform.recalculateZoomAndCenter(this.terrain);}_getTransformForUpdate(){return this.transformCameraUpdate||this.terrain?(this._requestedCameraState||(this._requestedCameraState=this.transform.clone()),this._requestedCameraState):this.transform}_elevateCameraIfInsideTerrain(e){if(!this.terrain&&e.elevation>=0&&e.pitch<=90)return {};const t=e.getCameraLngLat(),i=e.getCameraAltitude(),r=this.terrain?this.terrain.getElevationForLngLatZoom(t,e.zoom):0;if(ithis._elevateCameraIfInsideTerrain(e))),this.transformCameraUpdate&&t.push((e=>this.transformCameraUpdate(e))),!t.length)return;const i=e.clone();for(const e of t){const t=i.clone(),{center:r,zoom:o,roll:a,pitch:s,bearing:n,elevation:l}=e(t);r&&t.setCenter(r),void 0!==l&&t.setElevation(l),void 0!==o&&t.setZoom(o),void 0!==a&&t.setRoll(a),void 0!==s&&t.setPitch(s),void 0!==n&&t.setBearing(n),i.apply(t);}this.transform.apply(i);}_fireMoveEvents(e){this.fire(new t.Event("move",e)),this._zooming&&this.fire(new t.Event("zoom",e)),this._rotating&&this.fire(new t.Event("rotate",e)),this._pitching&&this.fire(new t.Event("pitch",e)),this._rolling&&this.fire(new t.Event("roll",e));}_afterEase(e,i){if(this._easeId&&i&&this._easeId===i)return;delete this._easeId;const r=this._zooming,o=this._rotating,a=this._pitching,s=this._rolling;this._moving=!1,this._zooming=!1,this._rotating=!1,this._pitching=!1,this._rolling=!1,this._padding=!1,r&&this.fire(new t.Event("zoomend",e)),o&&this.fire(new t.Event("rotateend",e)),a&&this.fire(new t.Event("pitchend",e)),s&&this.fire(new t.Event("rollend",e)),this.fire(new t.Event("moveend",e));}flyTo(e,i){if(!e.essential&&f.prefersReducedMotion){const r=t.pick(e,["center","zoom","bearing","pitch","roll","elevation"]);return this.jumpTo(r,i)}this.stop(),e=t.extend({offset:[0,0],speed:1.2,curve:1.42,easing:t.defaultEasing},e);const r=this._getTransformForUpdate(),o=r.bearing,a=r.pitch,s=r.roll,n=r.padding,l="bearing"in e?this._normalizeBearing(e.bearing,o):o,c="pitch"in e?+e.pitch:a,h="roll"in e?this._normalizeBearing(e.roll,s):s,u="padding"in e?e.padding:r.padding,d=t.Point.convert(e.offset);let _=r.centerPoint.add(d);const p=r.screenPointToLocation(_),m=this.cameraHelper.handleFlyTo(r,{bearing:l,pitch:c,roll:h,padding:u,locationAtOffset:p,offsetAsPoint:d,center:e.center,minZoom:e.minZoom,zoom:e.zoom});let g=e.curve;const v=Math.max(r.width,r.height),y=v/m.scaleOfZoom,x=m.pixelPathLength;"number"==typeof m.scaleOfMinZoom&&(g=Math.sqrt(v/m.scaleOfMinZoom/x*2));const b=g*g;function w(e){const t=(y*y-v*v+(e?-1:1)*b*b*x*x)/(2*(e?y:v)*b*x);return Math.log(Math.sqrt(t*t+1)-t)}function T(e){return (Math.exp(e)-Math.exp(-e))/2}function E(e){return (Math.exp(e)+Math.exp(-e))/2}const P=w(!1);let I=function(e){return E(P)/E(P+g*e)},C=function(e){return v*((E(P)*(T(t=P+g*e)/E(t))-T(P))/b)/x;var t;},M=(w(!0)-P)/g;if(Math.abs(x)<2e-6||!isFinite(M)){if(Math.abs(v-y)<1e-6)return this.easeTo(e,i);const t=y0,I=e=>Math.exp(t*g*e);}return e.duration="duration"in e?+e.duration:1e3*M/("screenSpeed"in e?+e.screenSpeed/g:+e.speed),e.maxDuration&&e.duration>e.maxDuration&&(e.duration=0),this._zooming=!0,this._rotating=o!==l,this._pitching=c!==a,this._rolling=h!==s,this._padding=!r.isPaddingEqual(u),this._prepareEase(i,!1),this.terrain&&this._prepareElevation(m.targetCenter),this._ease((p=>{const f=p*M,g=1/I(f),v=C(f);this._rotating&&r.setBearing(t.interpolateFactory.number(o,l,p)),this._pitching&&r.setPitch(t.interpolateFactory.number(a,c,p)),this._rolling&&r.setRoll(t.interpolateFactory.number(s,h,p)),this._padding&&(r.interpolatePadding(n,u,p),_=r.centerPoint.add(d)),m.easeFunc(p,g,v,_),this.terrain&&!e.freezeElevation&&this._updateElevation(p),this._applyUpdatedTransform(r),this._fireMoveEvents(i);}),(()=>{this.terrain&&e.freezeElevation&&this._finalizeElevation(),this._afterEase(i);}),e),this}isEasing(){return !!this._easeFrameId}stop(){return this._stop()}_stop(e,t){var i;if(this._easeFrameId&&(this._cancelRenderFrame(this._easeFrameId),delete this._easeFrameId,delete this._onEaseFrame),this._onEaseEnd){const e=this._onEaseEnd;delete this._onEaseEnd,e.call(this,t);}return e||null===(i=this.handlers)||void 0===i||i.stop(!1),this}_ease(e,t,i){!1===i.animate||0===i.duration?(e(1),t()):(this._easeStart=f.now(),this._easeOptions=i,this._onEaseFrame=e,this._onEaseEnd=t,this._easeFrameId=this._requestRenderFrame(this._renderFrameCallback));}_normalizeBearing(e,i){e=t.wrap(e,-180,180);const r=Math.abs(e-i);return Math.abs(e-360-i)MapLibre'};class Ca{constructor(e=Ia){this._toggleAttribution=()=>{this._container.classList.contains("maplibregl-compact")&&(this._container.classList.contains("maplibregl-compact-show")?(this._container.setAttribute("open",""),this._container.classList.remove("maplibregl-compact-show")):(this._container.classList.add("maplibregl-compact-show"),this._container.removeAttribute("open")));},this._updateData=e=>{!e||"metadata"!==e.sourceDataType&&"visibility"!==e.sourceDataType&&"style"!==e.dataType&&"terrain"!==e.type||this._updateAttributions();},this._updateCompact=()=>{this._map.getCanvasContainer().offsetWidth<=640||this._compact?!1===this._compact?this._container.setAttribute("open",""):this._container.classList.contains("maplibregl-compact")||this._container.classList.contains("maplibregl-attrib-empty")||(this._container.setAttribute("open",""),this._container.classList.add("maplibregl-compact","maplibregl-compact-show")):(this._container.setAttribute("open",""),this._container.classList.contains("maplibregl-compact")&&this._container.classList.remove("maplibregl-compact","maplibregl-compact-show"));},this._updateCompactMinimize=()=>{this._container.classList.contains("maplibregl-compact")&&this._container.classList.contains("maplibregl-compact-show")&&this._container.classList.remove("maplibregl-compact-show");},this.options=e;}getDefaultPosition(){return "bottom-right"}onAdd(e){return this._map=e,this._compact=this.options.compact,this._container=wi.create("details","maplibregl-ctrl maplibregl-ctrl-attrib"),this._compactButton=wi.create("summary","maplibregl-ctrl-attrib-button",this._container),this._compactButton.addEventListener("click",this._toggleAttribution),this._setElementTitle(this._compactButton,"ToggleAttribution"),this._innerContainer=wi.create("div","maplibregl-ctrl-attrib-inner",this._container),this._updateAttributions(),this._updateCompact(),this._map.on("styledata",this._updateData),this._map.on("sourcedata",this._updateData),this._map.on("terrain",this._updateData),this._map.on("resize",this._updateCompact),this._map.on("drag",this._updateCompactMinimize),this._container}onRemove(){wi.remove(this._container),this._map.off("styledata",this._updateData),this._map.off("sourcedata",this._updateData),this._map.off("terrain",this._updateData),this._map.off("resize",this._updateCompact),this._map.off("drag",this._updateCompactMinimize),this._map=void 0,this._compact=void 0,this._sanitizedAttributionHTML=void 0;}_setElementTitle(e,t){const i=this._map._getUIString(`AttributionControl.${t}`);e.title=i,e.setAttribute("aria-label",i);}_updateAttributions(){if(!this._map.style)return;let e=[];if(this.options.customAttribution&&(Array.isArray(this.options.customAttribution)?e=e.concat(this.options.customAttribution.map((e=>"string"!=typeof e?"":e))):"string"==typeof this.options.customAttribution&&e.push(this.options.customAttribution)),this._map.style.stylesheet){const e=this._map.style.stylesheet;this.styleOwner=e.owner,this.styleId=e.id;}const t=this._map.style.sourceCaches;for(const i in t){const r=t[i];if(r.used||r.usedForTerrain){const t=r.getSource();t.attribution&&e.indexOf(t.attribution)<0&&e.push(t.attribution);}}e=e.filter((e=>String(e).trim())),e.sort(((e,t)=>e.length-t.length)),e=e.filter(((t,i)=>{for(let r=i+1;r=0)return !1;return !0}));const i=e.join(" | ");i!==this._sanitizedAttributionHTML&&(this._sanitizedAttributionHTML=wi.sanitize(i),e.length?(this._innerContainer.innerHTML=this._sanitizedAttributionHTML,this._container.classList.remove("maplibregl-attrib-empty")):this._container.classList.add("maplibregl-attrib-empty"),this._updateCompact(),this._editLink=null);}}class Ma{constructor(e={}){this._updateCompact=()=>{const e=this._container.children;if(e.length){const t=e[0];this._map.getCanvasContainer().offsetWidth<=640||this._compact?!1!==this._compact&&t.classList.add("maplibregl-compact"):t.classList.remove("maplibregl-compact");}},this.options=e;}getDefaultPosition(){return "bottom-left"}onAdd(e){this._map=e,this._compact=this.options&&this.options.compact,this._container=wi.create("div","maplibregl-ctrl");const t=wi.create("a","maplibregl-ctrl-logo");return t.target="_blank",t.rel="noopener nofollow",t.href="https://maplibre.org/",t.setAttribute("aria-label",this._map._getUIString("LogoControl.Title")),t.setAttribute("rel","noopener nofollow"),this._container.appendChild(t),this._container.style.display="block",this._map.on("resize",this._updateCompact),this._updateCompact(),this._container}onRemove(){wi.remove(this._container),this._map.off("resize",this._updateCompact),this._map=void 0,this._compact=void 0;}}class Sa{constructor(){this._queue=[],this._id=0,this._cleared=!1,this._currentlyRunning=!1;}add(e){const t=++this._id;return this._queue.push({callback:e,id:t,cancelled:!1}),t}remove(e){const t=this._currentlyRunning,i=t?this._queue.concat(t):this._queue;for(const t of i)if(t.id===e)return void(t.cancelled=!0)}run(e=0){if(this._currentlyRunning)throw new Error("Attempting to run(), but is already running.");const t=this._currentlyRunning=this._queue;this._queue=[];for(const i of t)if(!i.cancelled&&(i.callback(e),this._cleared))break;this._cleared=!1,this._currentlyRunning=!1;}clear(){this._currentlyRunning&&(this._cleared=!0),this._queue=[];}}var Ra=t.createLayout([{name:"a_pos3d",type:"Int16",components:3}]);class Da extends t.Evented{constructor(e){super(),this._lastTilesetChange=f.now(),this.sourceCache=e,this._tiles={},this._renderableTilesKeys=[],this._sourceTileCache={},this.minzoom=0,this.maxzoom=22,this.deltaZoom=1,this.tileSize=e._source.tileSize*2**this.deltaZoom,e.usedForTerrain=!0,e.tileSize=this.tileSize;}destruct(){this.sourceCache.usedForTerrain=!1,this.sourceCache.tileSize=null;}update(e,i){this.sourceCache.update(e,i),this._renderableTilesKeys=[];const r={};for(const o of ve(e,{tileSize:this.tileSize,minzoom:this.minzoom,maxzoom:this.maxzoom,reparseOverscaled:!1,terrain:i,calculateTileZoom:this.sourceCache._source.calculateTileZoom}))r[o.key]=!0,this._renderableTilesKeys.push(o.key),this._tiles[o.key]||(o.terrainRttPosMatrix32f=new Float64Array(16),t.ortho(o.terrainRttPosMatrix32f,0,t.EXTENT,t.EXTENT,0,0,1),this._tiles[o.key]=new ae(o,this.tileSize),this._lastTilesetChange=f.now());for(const e in this._tiles)r[e]||delete this._tiles[e];}freeRtt(e){for(const t in this._tiles){const i=this._tiles[t];(!e||i.tileID.equals(e)||i.tileID.isChildOf(e)||e.isChildOf(i.tileID))&&(i.rtt=[]);}}getRenderableTiles(){return this._renderableTilesKeys.map((e=>this.getTileByID(e)))}getTileByID(e){return this._tiles[e]}getTerrainCoords(e){const i={};for(const r of this._renderableTilesKeys){const o=this._tiles[r].tileID,a=e.clone(),s=t.createMat4f64();if(o.canonical.equals(e.canonical))t.ortho(s,0,t.EXTENT,t.EXTENT,0,0,1);else if(o.canonical.isChildOf(e.canonical)){const i=o.canonical.z-e.canonical.z,r=o.canonical.x-(o.canonical.x>>i<>i<>i;t.ortho(s,0,n,n,0,0,1),t.translate(s,s,[-r*n,-a*n,0]);}else {if(!e.canonical.isChildOf(o.canonical))continue;{const i=e.canonical.z-o.canonical.z,r=e.canonical.x-(e.canonical.x>>i<>i<>i;t.ortho(s,0,t.EXTENT,t.EXTENT,0,0,1),t.translate(s,s,[r*n,a*n,0]),t.scale(s,s,[1/2**i,1/2**i,0]);}}a.terrainRttPosMatrix32f=new Float32Array(s),i[r]=a;}return i}getSourceTile(e,t){const i=this.sourceCache._source;let r=e.overscaledZ-this.deltaZoom;if(r>i.maxzoom&&(r=i.maxzoom),r=i.minzoom&&(!o||!o.dem);)o=this.sourceCache.getTileByID(e.scaledTo(r--).key);return o}anyTilesAfterTime(e=Date.now()){return this._lastTilesetChange>=e}}class za{constructor(e,t,i){this.painter=e,this.sourceCache=new Da(t),this.options=i,this.exaggeration="number"==typeof i.exaggeration?i.exaggeration:1,this.qualityFactor=2,this.meshSize=128,this._demMatrixCache={},this.coordsIndex=[],this._coordsTextureSize=1024;}getDEMElevation(e,i,r,o=t.EXTENT){var a;if(!(i>=0&&i=0&&re.canonical.z&&(e.canonical.z>=r?o=e.canonical.z-r:t.warnOnce("cannot calculate elevation if elevation maxzoom > source.maxzoom"));const a=e.canonical.x-(e.canonical.x>>o<>o<>8<<4|e>>8,i[t+3]=0;const r=new t.RGBAImage({width:this._coordsTextureSize,height:this._coordsTextureSize},new Uint8Array(i.buffer)),o=new y(e,r,e.gl.RGBA,{premultiply:!1});return o.bind(e.gl.NEAREST,e.gl.CLAMP_TO_EDGE),this._coordsTexture=o,o}pointCoordinate(e){this.painter.maybeDrawDepthAndCoords(!0);const i=new Uint8Array(4),r=this.painter.context,o=r.gl,a=Math.round(e.x*this.painter.pixelRatio/devicePixelRatio),s=Math.round(e.y*this.painter.pixelRatio/devicePixelRatio),n=Math.round(this.painter.height/devicePixelRatio);r.bindFramebuffer.set(this.getFramebuffer("coords").framebuffer),o.readPixels(a,n-s-1,1,1,o.RGBA,o.UNSIGNED_BYTE,i),r.bindFramebuffer.set(null);const l=i[0]+(i[2]>>4<<8),c=i[1]+((15&i[2])<<8),h=this.coordsIndex[255-i[3]],u=h&&this.sourceCache.getTileByID(h);if(!u)return null;const d=this._coordsTextureSize,_=(1<e.id!==t)),this._recentlyUsed.push(e.id);}stampObject(e){e.stamp=++this._stamp;}getOrCreateFreeObject(){for(const e of this._recentlyUsed)if(!this._objects[e].inUse)return this._objects[e];if(this._objects.length>=this._size)throw new Error("No free RenderPool available, call freeAllObjects() required!");const e=this._createObject(this._objects.length);return this._objects.push(e),e}freeObject(e){e.inUse=!1;}freeAllObjects(){for(const e of this._objects)this.freeObject(e);}isFull(){return !(this._objects.length!e.inUse))}}const Aa={background:!0,fill:!0,line:!0,raster:!0,hillshade:!0};class ka{constructor(e,t){this.painter=e,this.terrain=t,this.pool=new La(e.context,30,t.sourceCache.tileSize*t.qualityFactor);}destruct(){this.pool.destruct();}getTexture(e){return this.pool.getObjectForId(e.rtt[this._stacks.length-1].id).texture}prepareForRender(e,t){this._stacks=[],this._prevType=null,this._rttTiles=[],this._renderableTiles=this.terrain.sourceCache.getRenderableTiles(),this._renderableLayerIds=e._order.filter((i=>!e._layers[i].isHidden(t))),this._coordsAscending={};for(const t in e.sourceCaches){this._coordsAscending[t]={};const i=e.sourceCaches[t].getVisibleCoordinates();for(const e of i){const i=this.terrain.sourceCache.getTerrainCoords(e);for(const e in i)this._coordsAscending[t][e]||(this._coordsAscending[t][e]=[]),this._coordsAscending[t][e].push(i[e]);}}this._coordsAscendingStr={};for(const t of e._order){const i=e._layers[t],r=i.source;if(Aa[i.type]&&!this._coordsAscendingStr[r]){this._coordsAscendingStr[r]={};for(const e in this._coordsAscending[r])this._coordsAscendingStr[r][e]=this._coordsAscending[r][e].map((e=>e.key)).sort().join();}}for(const e of this._renderableTiles)for(const t in this._coordsAscendingStr){const i=this._coordsAscendingStr[t][e.tileID.key];i&&i!==e.rttCoords[t]&&(e.rtt=[]);}}renderLayer(e,i){if(e.isHidden(this.painter.transform.zoom))return !1;const r=Object.assign(Object.assign({},i),{isRenderingToTexture:!0}),o=e.type,a=this.painter,s=this._renderableLayerIds[this._renderableLayerIds.length-1]===e.id;if(Aa[o]&&(this._prevType&&Aa[this._prevType]||this._stacks.push([]),this._prevType=o,this._stacks[this._stacks.length-1].push(e.id),!s))return !0;if(Aa[this._prevType]||Aa[o]&&s){this._prevType=o;const e=this._stacks.length-1,i=this._stacks[e]||[];for(const o of this._renderableTiles){if(this.pool.isFull()&&(To(this.painter,this.terrain,this._rttTiles,r),this._rttTiles=[],this.pool.freeAllObjects()),this._rttTiles.push(o),o.rtt[e]){const t=this.pool.getObjectForId(o.rtt[e].id);if(t.stamp===o.rtt[e].stamp){this.pool.useObject(t);continue}}const s=this.pool.getOrCreateFreeObject();this.pool.useObject(s),this.pool.stampObject(s),o.rtt[e]={id:s.id,stamp:s.stamp},a.context.bindFramebuffer.set(s.fbo.framebuffer),a.context.clear({color:t.Color.transparent,stencil:0}),a.currentStencilSource=void 0;for(let e=0;ei.maxZoom)throw new Error("maxZoom must be greater than or equal to minZoom");if(null!=i.minPitch&&null!=i.maxPitch&&i.minPitch>i.maxPitch)throw new Error("maxPitch must be greater than or equal to minPitch");if(null!=i.minPitch&&i.minPitch<0)throw new Error("minPitch must be greater than or equal to 0");if(null!=i.maxPitch&&i.maxPitch>180)throw new Error("maxPitch must be less than or equal to 180");const r=new Ft,o=new Ut;if(void 0!==i.minZoom&&r.setMinZoom(i.minZoom),void 0!==i.maxZoom&&r.setMaxZoom(i.maxZoom),void 0!==i.minPitch&&r.setMinPitch(i.minPitch),void 0!==i.maxPitch&&r.setMaxPitch(i.maxPitch),void 0!==i.renderWorldCopies&&r.setRenderWorldCopies(i.renderWorldCopies),super(r,o,{bearingSnap:i.bearingSnap}),this._idleTriggered=!1,this._crossFadingFactor=1,this._renderTaskQueue=new Sa,this._controls=[],this._mapId=t.uniqueId(),this._contextLost=e=>{e.preventDefault(),this._frameRequest&&(this._frameRequest.abort(),this._frameRequest=null),this.fire(new t.Event("webglcontextlost",{originalEvent:e}));},this._contextRestored=e=>{this._setupPainter(),this.resize(),this._update(),this.fire(new t.Event("webglcontextrestored",{originalEvent:e}));},this._onMapScroll=e=>{if(e.target===this._container)return this._container.scrollTop=0,this._container.scrollLeft=0,!1},this._onWindowOnline=()=>{this._update();},this._interactive=i.interactive,this._maxTileCacheSize=i.maxTileCacheSize,this._maxTileCacheZoomLevels=i.maxTileCacheZoomLevels,this._failIfMajorPerformanceCaveat=!0===i.failIfMajorPerformanceCaveat,this._preserveDrawingBuffer=!0===i.preserveDrawingBuffer,this._antialias=!0===i.antialias,this._trackResize=!0===i.trackResize,this._bearingSnap=i.bearingSnap,this._centerClampedToGround=i.centerClampedToGround,this._refreshExpiredTiles=!0===i.refreshExpiredTiles,this._fadeDuration=i.fadeDuration,this._crossSourceCollisions=!0===i.crossSourceCollisions,this._collectResourceTiming=!0===i.collectResourceTiming,this._locale=Object.assign(Object.assign({},Fa),i.locale),this._clickTolerance=i.clickTolerance,this._overridePixelRatio=i.pixelRatio,this._maxCanvasSize=i.maxCanvasSize,this.transformCameraUpdate=i.transformCameraUpdate,this.cancelPendingTileRequestsWhileZooming=!0===i.cancelPendingTileRequestsWhileZooming,this._imageQueueHandle=_.addThrottleControl((()=>this.isMoving())),this._requestManager=new vi(i.transformRequest),"string"==typeof i.container){if(this._container=document.getElementById(i.container),!this._container)throw new Error(`Container '${i.container}' not found.`)}else {if(!(i.container instanceof HTMLElement))throw new Error("Invalid type: 'container' must be a String or HTMLElement.");this._container=i.container;}if(i.maxBounds&&this.setMaxBounds(i.maxBounds),this._setupContainer(),this._setupPainter(),this.on("move",(()=>this._update(!1))),this.on("moveend",(()=>this._update(!1))),this.on("zoom",(()=>this._update(!0))),this.on("terrain",(()=>{this.painter.terrainFacilitator.dirty=!0,this._update(!0);})),this.once("idle",(()=>{this._idleTriggered=!0;})),"undefined"!=typeof window){addEventListener("online",this._onWindowOnline,!1);let e=!1;const t=Io((e=>{this._trackResize&&!this._removed&&(this.resize(e),this.redraw());}),50);this._resizeObserver=new ResizeObserver((i=>{e?t(i):e=!0;})),this._resizeObserver.observe(this._container);}this.handlers=new Ea(this,i),this._hash=i.hash&&new Co("string"==typeof i.hash&&i.hash||void 0).addTo(this),this._hash&&this._hash._onHashChange()||(this.jumpTo({center:i.center,elevation:i.elevation,zoom:i.zoom,bearing:i.bearing,pitch:i.pitch,roll:i.roll}),i.bounds&&(this.resize(),this.fitBounds(i.bounds,t.extend({},i.fitBoundsOptions,{duration:0})))),this.resize(),this._localIdeographFontFamily=i.localIdeographFontFamily,this._validateStyle=i.validateStyle,i.style&&this.setStyle(i.style,{localIdeographFontFamily:i.localIdeographFontFamily}),i.attributionControl&&this.addControl(new Ca("boolean"==typeof i.attributionControl?void 0:i.attributionControl)),i.maplibreLogo&&this.addControl(new Ma,i.logoPosition),this.on("style.load",(()=>{if(this.transform.unmodified){const e=t.pick(this.style.stylesheet,["center","zoom","bearing","pitch","roll"]);this.jumpTo(e);}})),this.on("data",(e=>{this._update("style"===e.dataType),this.fire(new t.Event(`${e.dataType}data`,e));})),this.on("dataloading",(e=>{this.fire(new t.Event(`${e.dataType}dataloading`,e));})),this.on("dataabort",(e=>{this.fire(new t.Event("sourcedataabort",e));}));}_getMapId(){return this._mapId}addControl(e,i){if(void 0===i&&(i=e.getDefaultPosition?e.getDefaultPosition():"top-right"),!e||!e.onAdd)return this.fire(new t.ErrorEvent(new Error("Invalid argument to map.addControl(). Argument must be a control with onAdd and onRemove methods.")));const r=e.onAdd(this);this._controls.push(e);const o=this._controlPositions[i];return -1!==i.indexOf("bottom")?o.insertBefore(r,o.firstChild):o.appendChild(r),this}removeControl(e){if(!e||!e.onRemove)return this.fire(new t.ErrorEvent(new Error("Invalid argument to map.removeControl(). Argument must be a control with onAdd and onRemove methods.")));const i=this._controls.indexOf(e);return i>-1&&this._controls.splice(i,1),e.onRemove(this),this}hasControl(e){return this._controls.indexOf(e)>-1}calculateCameraOptionsFromTo(e,t,i,r){return null==r&&this.terrain&&(r=this.terrain.getElevationForLngLatZoom(i,this.transform.tileZoom)),super.calculateCameraOptionsFromTo(e,t,i,r)}resize(e){var i;const r=this._containerDimensions(),o=r[0],a=r[1],s=this._getClampedPixelRatio(o,a);if(this._resizeCanvas(o,a,s),this.painter.resize(o,a,s),this.painter.overLimit()){const e=this.painter.context.gl;this._maxCanvasSize=[e.drawingBufferWidth,e.drawingBufferHeight];const t=this._getClampedPixelRatio(o,a);this._resizeCanvas(o,a,t),this.painter.resize(o,a,t);}this.transform.resize(o,a),null===(i=this._requestedCameraState)||void 0===i||i.resize(o,a);const n=!this._moving;return n&&(this.stop(),this.fire(new t.Event("movestart",e)).fire(new t.Event("move",e))),this.fire(new t.Event("resize",e)),n&&this.fire(new t.Event("moveend",e)),this}_getClampedPixelRatio(e,t){const{0:i,1:r}=this._maxCanvasSize,o=this.getPixelRatio(),a=e*o,s=t*o;return Math.min(a>i?i/a:1,s>r?r/s:1)*o}getPixelRatio(){var e;return null!==(e=this._overridePixelRatio)&&void 0!==e?e:devicePixelRatio}setPixelRatio(e){this._overridePixelRatio=e,this.resize();}getBounds(){return this.transform.getBounds()}getMaxBounds(){return this.transform.getMaxBounds()}setMaxBounds(e){return this.transform.setMaxBounds(V.convert(e)),this._update()}setMinZoom(e){if((e=null==e?-2:e)>=-2&&e<=this.transform.maxZoom)return this.transform.setMinZoom(e),this._update(),this.getZoom()=this.transform.minZoom)return this.transform.setMaxZoom(e),this._update(),this.getZoom()>e&&this.setZoom(e),this;throw new Error("maxZoom must be greater than the current minZoom")}getMaxZoom(){return this.transform.maxZoom}setMinPitch(e){if((e=null==e?0:e)<0)throw new Error("minPitch must be greater than or equal to 0");if(e>=0&&e<=this.transform.maxPitch)return this.transform.setMinPitch(e),this._update(),this.getPitch()180)throw new Error("maxPitch must be less than or equal to 180");if(e>=this.transform.minPitch)return this.transform.setMaxPitch(e),this._update(),this.getPitch()>e&&this.setPitch(e),this;throw new Error("maxPitch must be greater than the current minPitch")}getMaxPitch(){return this.transform.maxPitch}getRenderWorldCopies(){return this.transform.renderWorldCopies}setRenderWorldCopies(e){return this.transform.setRenderWorldCopies(e),this._update()}project(e){return this.transform.locationToScreenPoint(t.LngLat.convert(e),this.style&&this.terrain)}unproject(e){return this.transform.screenPointToLocation(t.Point.convert(e),this.terrain)}isMoving(){var e;return this._moving||(null===(e=this.handlers)||void 0===e?void 0:e.isMoving())}isZooming(){var e;return this._zooming||(null===(e=this.handlers)||void 0===e?void 0:e.isZooming())}isRotating(){var e;return this._rotating||(null===(e=this.handlers)||void 0===e?void 0:e.isRotating())}_createDelegatedListener(e,t,i){if("mouseenter"===e||"mouseover"===e){let r=!1;const o=o=>{const a=t.filter((e=>this.getLayer(e))),s=0!==a.length?this.queryRenderedFeatures(o.point,{layers:a}):[];s.length?r||(r=!0,i.call(this,new Bo(e,this,o.originalEvent,{features:s}))):r=!1;};return {layers:t,listener:i,delegates:{mousemove:o,mouseout:()=>{r=!1;}}}}if("mouseleave"===e||"mouseout"===e){let r=!1;const o=o=>{const a=t.filter((e=>this.getLayer(e)));(0!==a.length?this.queryRenderedFeatures(o.point,{layers:a}):[]).length?r=!0:r&&(r=!1,i.call(this,new Bo(e,this,o.originalEvent)));},a=t=>{r&&(r=!1,i.call(this,new Bo(e,this,t.originalEvent)));};return {layers:t,listener:i,delegates:{mousemove:o,mouseout:a}}}{const r=e=>{const r=t.filter((e=>this.getLayer(e))),o=0!==r.length?this.queryRenderedFeatures(e.point,{layers:r}):[];o.length&&(e.features=o,i.call(this,e),delete e.features);};return {layers:t,listener:i,delegates:{[e]:r}}}}_saveDelegatedListener(e,t){this._delegatedListeners=this._delegatedListeners||{},this._delegatedListeners[e]=this._delegatedListeners[e]||[],this._delegatedListeners[e].push(t);}_removeDelegatedListener(e,t,i){if(!this._delegatedListeners||!this._delegatedListeners[e])return;const r=this._delegatedListeners[e];for(let e=0;et.includes(e)))){for(const e in o.delegates)this.off(e,o.delegates[e]);return void r.splice(e,1)}}}on(e,t,i){if(void 0===i)return super.on(e,t);const r="string"==typeof t?[t]:t,o=this._createDelegatedListener(e,r,i);this._saveDelegatedListener(e,o);for(const e in o.delegates)this.on(e,o.delegates[e]);return {unsubscribe:()=>{this._removeDelegatedListener(e,r,i);}}}once(e,t,i){if(void 0===i)return super.once(e,t);const r="string"==typeof t?[t]:t,o=this._createDelegatedListener(e,r,i);for(const t in o.delegates){const a=o.delegates[t];o.delegates[t]=(...t)=>{this._removeDelegatedListener(e,r,i),a(...t);};}this._saveDelegatedListener(e,o);for(const e in o.delegates)this.once(e,o.delegates[e]);return this}off(e,t,i){return void 0===i?super.off(e,t):(this._removeDelegatedListener(e,"string"==typeof t?[t]:t,i),this)}queryRenderedFeatures(e,i){if(!this.style)return [];let r;const o=e instanceof t.Point||Array.isArray(e),a=o?e:[[0,0],[this.transform.width,this.transform.height]];if(i=i||(o?{}:e)||{},a instanceof t.Point||"number"==typeof a[0])r=[t.Point.convert(a)];else {const e=t.Point.convert(a[0]),i=t.Point.convert(a[1]);r=[e,new t.Point(i.x,e.y),i,new t.Point(e.x,i.y),e];}return this.style.queryRenderedFeatures(r,i,this.transform)}querySourceFeatures(e,t){return this.style.querySourceFeatures(e,t)}setStyle(e,i){return !1!==(i=t.extend({},{localIdeographFontFamily:this._localIdeographFontFamily,validate:this._validateStyle},i)).diff&&i.localIdeographFontFamily===this._localIdeographFontFamily&&this.style&&e?(this._diffStyle(e,i),this):(this._localIdeographFontFamily=i.localIdeographFontFamily,this._updateStyle(e,i))}setTransformRequest(e){return this._requestManager.setTransformRequest(e),this}_getUIString(e){const t=this._locale[e];if(null==t)throw new Error(`Missing UI string '${e}'`);return t}_updateStyle(e,t){var i,r;if(t.transformStyle&&this.style&&!this.style._loaded)return void this.style.once("style.load",(()=>this._updateStyle(e,t)));const o=this.style&&t.transformStyle?this.style.serialize():void 0;return this.style&&(this.style.setEventedParent(null),this.style._remove(!e)),e?(this.style=new gi(this,t||{}),this.style.setEventedParent(this,{style:this.style}),"string"==typeof e?this.style.loadURL(e,t,o):this.style.loadJSON(e,t,o),this):(null===(r=null===(i=this.style)||void 0===i?void 0:i.projection)||void 0===r||r.destroy(),delete this.style,this)}_lazyInitEmptyStyle(){this.style||(this.style=new gi(this,{}),this.style.setEventedParent(this,{style:this.style}),this.style.loadEmpty());}_diffStyle(e,i){if("string"==typeof e){const r=this._requestManager.transformRequest(e,"Style");t.getJSON(r,new AbortController).then((e=>{this._updateDiff(e.data,i);})).catch((e=>{e&&this.fire(new t.ErrorEvent(e));}));}else "object"==typeof e&&this._updateDiff(e,i);}_updateDiff(e,i){try{this.style.setState(e,i)&&this._update(!0);}catch(r){t.warnOnce(`Unable to perform style diff: ${r.message||r.error||r}. Rebuilding the style from scratch.`),this._updateStyle(e,i);}}getStyle(){if(this.style)return this.style.serialize()}isStyleLoaded(){return this.style?this.style.loaded():t.warnOnce("There is no style added to the map.")}addSource(e,t){return this._lazyInitEmptyStyle(),this.style.addSource(e,t),this._update(!0)}isSourceLoaded(e){const i=this.style&&this.style.sourceCaches[e];if(void 0!==i)return i.loaded();this.fire(new t.ErrorEvent(new Error(`There is no source with ID '${e}'`)));}setTerrain(e){if(this.style._checkLoaded(),this._terrainDataCallback&&this.style.off("data",this._terrainDataCallback),e){const i=this.style.sourceCaches[e.source];if(!i)throw new Error(`cannot load terrain, because there exists no source with ID: ${e.source}`);null===this.terrain&&i.reload();for(const i in this.style._layers){const r=this.style._layers[i];"hillshade"===r.type&&r.source===e.source&&t.warnOnce("You are using the same source for a hillshade layer and for 3D terrain. Please consider using two separate sources to improve rendering quality.");}this.terrain=new za(this.painter,i,e),this.painter.renderToTexture=new ka(this.painter,this.terrain),this.transform.setMinElevationForCurrentTile(this.terrain.getMinTileElevationForLngLatZoom(this.transform.center,this.transform.tileZoom)),this.transform.setElevation(this.terrain.getElevationForLngLatZoom(this.transform.center,this.transform.tileZoom)),this._terrainDataCallback=t=>{"style"===t.dataType?this.terrain.sourceCache.freeRtt():"source"===t.dataType&&t.tile&&(t.sourceId!==e.source||this._elevationFreeze||(this.transform.setMinElevationForCurrentTile(this.terrain.getMinTileElevationForLngLatZoom(this.transform.center,this.transform.tileZoom)),this._centerClampedToGround&&this.transform.setElevation(this.terrain.getElevationForLngLatZoom(this.transform.center,this.transform.tileZoom))),this.terrain.sourceCache.freeRtt(t.tile.tileID));},this.style.on("data",this._terrainDataCallback);}else this.terrain&&this.terrain.sourceCache.destruct(),this.terrain=null,this.painter.renderToTexture&&this.painter.renderToTexture.destruct(),this.painter.renderToTexture=null,this.transform.setMinElevationForCurrentTile(0),this._centerClampedToGround&&this.transform.setElevation(0);return this.fire(new t.Event("terrain",{terrain:e})),this}getTerrain(){var e,t;return null!==(t=null===(e=this.terrain)||void 0===e?void 0:e.options)&&void 0!==t?t:null}areTilesLoaded(){const e=this.style&&this.style.sourceCaches;for(const t in e){const i=e[t]._tiles;for(const e in i){const t=i[e];if("loaded"!==t.state&&"errored"!==t.state)return !1}}return !0}removeSource(e){return this.style.removeSource(e),this._update(!0)}getSource(e){return this.style.getSource(e)}addImage(e,i,r={}){const{pixelRatio:o=1,sdf:a=!1,stretchX:s,stretchY:n,content:l,textFitWidth:c,textFitHeight:h}=r;if(this._lazyInitEmptyStyle(),!(i instanceof HTMLImageElement||t.isImageBitmap(i))){if(void 0===i.width||void 0===i.height)return this.fire(new t.ErrorEvent(new Error("Invalid arguments to map.addImage(). The second argument must be an `HTMLImageElement`, `ImageData`, `ImageBitmap`, or object with `width`, `height`, and `data` properties with the same format as `ImageData`")));{const{width:r,height:u,data:d}=i,_=i;return this.style.addImage(e,{data:new t.RGBAImage({width:r,height:u},new Uint8Array(d)),pixelRatio:o,stretchX:s,stretchY:n,content:l,textFitWidth:c,textFitHeight:h,sdf:a,version:0,userImage:_}),_.onAdd&&_.onAdd(this,e),this}}{const{width:r,height:u,data:d}=f.getImageData(i);this.style.addImage(e,{data:new t.RGBAImage({width:r,height:u},d),pixelRatio:o,stretchX:s,stretchY:n,content:l,textFitWidth:c,textFitHeight:h,sdf:a,version:0});}}updateImage(e,i){const r=this.style.getImage(e);if(!r)return this.fire(new t.ErrorEvent(new Error("The map has no image with that id. If you are adding a new image use `map.addImage(...)` instead.")));const o=i instanceof HTMLImageElement||t.isImageBitmap(i)?f.getImageData(i):i,{width:a,height:s,data:n}=o;if(void 0===a||void 0===s)return this.fire(new t.ErrorEvent(new Error("Invalid arguments to map.updateImage(). The second argument must be an `HTMLImageElement`, `ImageData`, `ImageBitmap`, or object with `width`, `height`, and `data` properties with the same format as `ImageData`")));if(a!==r.data.width||s!==r.data.height)return this.fire(new t.ErrorEvent(new Error("The width and height of the updated image must be that same as the previous version of the image")));const l=!(i instanceof HTMLImageElement||t.isImageBitmap(i));return r.data.replace(n,l),this.style.updateImage(e,r),this}getImage(e){return this.style.getImage(e)}hasImage(e){return e?!!this.style.getImage(e):(this.fire(new t.ErrorEvent(new Error("Missing required image id"))),!1)}removeImage(e){this.style.removeImage(e);}loadImage(e){return _.getImage(this._requestManager.transformRequest(e,"Image"),new AbortController)}listImages(){return this.style.listImages()}addLayer(e,t){return this._lazyInitEmptyStyle(),this.style.addLayer(e,t),this._update(!0)}moveLayer(e,t){return this.style.moveLayer(e,t),this._update(!0)}removeLayer(e){return this.style.removeLayer(e),this._update(!0)}getLayer(e){return this.style.getLayer(e)}getLayersOrder(){return this.style.getLayersOrder()}setLayerZoomRange(e,t,i){return this.style.setLayerZoomRange(e,t,i),this._update(!0)}setFilter(e,t,i={}){return this.style.setFilter(e,t,i),this._update(!0)}getFilter(e){return this.style.getFilter(e)}setPaintProperty(e,t,i,r={}){return this.style.setPaintProperty(e,t,i,r),this._update(!0)}getPaintProperty(e,t){return this.style.getPaintProperty(e,t)}setLayoutProperty(e,t,i,r={}){return this.style.setLayoutProperty(e,t,i,r),this._update(!0)}getLayoutProperty(e,t){return this.style.getLayoutProperty(e,t)}setGlyphs(e,t={}){return this._lazyInitEmptyStyle(),this.style.setGlyphs(e,t),this._update(!0)}getGlyphs(){return this.style.getGlyphsUrl()}addSprite(e,t,i={}){return this._lazyInitEmptyStyle(),this.style.addSprite(e,t,i,(e=>{e||this._update(!0);})),this}removeSprite(e){return this._lazyInitEmptyStyle(),this.style.removeSprite(e),this._update(!0)}getSprite(){return this.style.getSprite()}setSprite(e,t={}){return this._lazyInitEmptyStyle(),this.style.setSprite(e,t,(e=>{e||this._update(!0);})),this}setLight(e,t={}){return this._lazyInitEmptyStyle(),this.style.setLight(e,t),this._update(!0)}getLight(){return this.style.getLight()}setSky(e,t={}){return this._lazyInitEmptyStyle(),this.style.setSky(e,t),this._update(!0)}getSky(){return this.style.getSky()}setFeatureState(e,t){return this.style.setFeatureState(e,t),this._update()}removeFeatureState(e,t){return this.style.removeFeatureState(e,t),this._update()}getFeatureState(e){return this.style.getFeatureState(e)}getContainer(){return this._container}getCanvasContainer(){return this._canvasContainer}getCanvas(){return this._canvas}_containerDimensions(){let e=0,t=0;return this._container&&(e=this._container.clientWidth||400,t=this._container.clientHeight||300),[e,t]}_setupContainer(){const e=this._container;e.classList.add("maplibregl-map");const t=this._canvasContainer=wi.create("div","maplibregl-canvas-container",e);this._interactive&&t.classList.add("maplibregl-interactive"),this._canvas=wi.create("canvas","maplibregl-canvas",t),this._canvas.addEventListener("webglcontextlost",this._contextLost,!1),this._canvas.addEventListener("webglcontextrestored",this._contextRestored,!1),this._canvas.setAttribute("tabindex",this._interactive?"0":"-1"),this._canvas.setAttribute("aria-label",this._getUIString("Map.Title")),this._canvas.setAttribute("role","region");const i=this._containerDimensions(),r=this._getClampedPixelRatio(i[0],i[1]);this._resizeCanvas(i[0],i[1],r);const o=this._controlContainer=wi.create("div","maplibregl-control-container",e),a=this._controlPositions={};["top-left","top-right","bottom-left","bottom-right"].forEach((e=>{a[e]=wi.create("div",`maplibregl-ctrl-${e} `,o);})),this._container.addEventListener("scroll",this._onMapScroll,!1);}_resizeCanvas(e,t,i){this._canvas.width=Math.floor(i*e),this._canvas.height=Math.floor(i*t),this._canvas.style.width=`${e}px`,this._canvas.style.height=`${t}px`;}_setupPainter(){const e={alpha:!0,stencil:!0,depth:!0,failIfMajorPerformanceCaveat:this._failIfMajorPerformanceCaveat,preserveDrawingBuffer:this._preserveDrawingBuffer,antialias:this._antialias||!1};let t=null;this._canvas.addEventListener("webglcontextcreationerror",(i=>{t={requestedAttributes:e},i&&(t.statusMessage=i.statusMessage,t.type=i.type);}),{once:!0});const i=this._canvas.getContext("webgl2",e)||this._canvas.getContext("webgl",e);if(!i){const e="Failed to initialize WebGL";throw t?(t.message=e,new Error(JSON.stringify(t))):new Error(e)}this.painter=new Po(i,this.transform),n.testSupport(i);}migrateProjection(e,i){super.migrateProjection(e,i),this.painter.transform=e,this.fire(new t.Event("projectiontransition",{newProjection:this.style.projection.name}));}loaded(){return !this._styleDirty&&!this._sourcesDirty&&!!this.style&&this.style.loaded()}_update(e){return this.style&&this.style._loaded?(this._styleDirty=this._styleDirty||e,this._sourcesDirty=!0,this.triggerRepaint(),this):this}_requestRenderFrame(e){return this._update(),this._renderTaskQueue.add(e)}_cancelRenderFrame(e){this._renderTaskQueue.remove(e);}_render(e){const i=this._idleTriggered?this._fadeDuration:0;if(this.painter.context.setDirty(),this.painter.setBaseState(),this._renderTaskQueue.run(e),this._removed)return;let r=!1;if(this.style&&this._styleDirty){this._styleDirty=!1;const e=this.transform.zoom,o=f.now();this.style.zoomHistory.update(e,o);const a=new t.EvaluationParameters(e,{now:o,fadeDuration:i,zoomHistory:this.style.zoomHistory,transition:this.style.getTransition()}),s=a.crossFadingFactor();1===s&&s===this._crossFadingFactor||(r=!0,this._crossFadingFactor=s),this.style.update(a);}const o=this.transform.newFrameUpdate();this.style&&(this._sourcesDirty||o.forceSourceUpdate)&&(this._sourcesDirty=!1,this.style._updateSources(this.transform)),this.terrain?(this.terrain.sourceCache.update(this.transform,this.terrain),this.transform.setMinElevationForCurrentTile(this.terrain.getMinTileElevationForLngLatZoom(this.transform.center,this.transform.tileZoom)),!this._elevationFreeze&&this._centerClampedToGround&&this.transform.setElevation(this.terrain.getElevationForLngLatZoom(this.transform.center,this.transform.tileZoom))):(this.transform.setMinElevationForCurrentTile(0),this._centerClampedToGround&&this.transform.setElevation(0)),this._placementDirty=this.style&&this.style._updatePlacement(this.transform,this.showCollisionBoxes,i,this._crossSourceCollisions,o.forcePlacementUpdate),o.fireProjectionEvent&&this.fire(new t.Event("projectiontransition",o.fireProjectionEvent)),this.painter.render(this.style,{showTileBoundaries:this.showTileBoundaries,showOverdrawInspector:this._showOverdrawInspector,rotating:this.isRotating(),zooming:this.isZooming(),moving:this.isMoving(),fadeDuration:i,showPadding:this.showPadding}),this.fire(new t.Event("render")),this.loaded()&&!this._loaded&&(this._loaded=!0,t.PerformanceUtils.mark(t.PerformanceMarkers.load),this.fire(new t.Event("load"))),this.style&&(this.style.hasTransitions()||r)&&(this._styleDirty=!0),this.style&&!this._placementDirty&&this.style._releaseSymbolFadeTiles();const a=this._sourcesDirty||this._styleDirty||this._placementDirty||this.style.projection.isRenderingDirty()||this.transform.isRenderingDirty();return a||this._repaint?this.triggerRepaint():!this.isMoving()&&this.loaded()&&this.fire(new t.Event("idle")),!this._loaded||this._fullyLoaded||a||(this._fullyLoaded=!0,t.PerformanceUtils.mark(t.PerformanceMarkers.fullLoad)),this}redraw(){return this.style&&(this._frameRequest&&(this._frameRequest.abort(),this._frameRequest=null),this._render(0)),this}remove(){var e;this._hash&&this._hash.remove();for(const e of this._controls)e.onRemove(this);this._controls=[],this._frameRequest&&(this._frameRequest.abort(),this._frameRequest=null),this._renderTaskQueue.clear(),this.painter.destroy(),this.handlers.destroy(),delete this.handlers,this.setStyle(null),"undefined"!=typeof window&&removeEventListener("online",this._onWindowOnline,!1),_.removeThrottleControl(this._imageQueueHandle),null===(e=this._resizeObserver)||void 0===e||e.disconnect();const i=this.painter.context.gl.getExtension("WEBGL_lose_context");(null==i?void 0:i.loseContext)&&i.loseContext(),this._canvas.removeEventListener("webglcontextrestored",this._contextRestored,!1),this._canvas.removeEventListener("webglcontextlost",this._contextLost,!1),wi.remove(this._canvasContainer),wi.remove(this._controlContainer),this._container.removeEventListener("scroll",this._onMapScroll,!1),this._container.classList.remove("maplibregl-map"),t.PerformanceUtils.clearMetrics(),this._removed=!0,this.fire(new t.Event("remove"));}triggerRepaint(){this.style&&!this._frameRequest&&(this._frameRequest=new AbortController,f.frameAsync(this._frameRequest).then((e=>{t.PerformanceUtils.frame(e),this._frameRequest=null,this._render(e);})).catch((()=>{})));}get showTileBoundaries(){return !!this._showTileBoundaries}set showTileBoundaries(e){this._showTileBoundaries!==e&&(this._showTileBoundaries=e,this._update());}get showPadding(){return !!this._showPadding}set showPadding(e){this._showPadding!==e&&(this._showPadding=e,this._update());}get showCollisionBoxes(){return !!this._showCollisionBoxes}set showCollisionBoxes(e){this._showCollisionBoxes!==e&&(this._showCollisionBoxes=e,e?this.style._generateCollisionBoxes():this._update());}get showOverdrawInspector(){return !!this._showOverdrawInspector}set showOverdrawInspector(e){this._showOverdrawInspector!==e&&(this._showOverdrawInspector=e,this._update());}get repaint(){return !!this._repaint}set repaint(e){this._repaint!==e&&(this._repaint=e,this.triggerRepaint());}get vertices(){return !!this._vertices}set vertices(e){this._vertices=e,this._update();}get version(){return Ba}getCameraTargetElevation(){return this.transform.elevation}getProjection(){return this.style.getProjection()}setProjection(e){return this._lazyInitEmptyStyle(),this.style.setProjection(e),this._update(!0)}};const ja=e=>new Promise(((t,i)=>{e&&(e.stubRender=null==e.stubRender||e.stubRender,e.showMap=null!=e.showMap&&e.showMap);const 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s=0;s{this.startMove(e,wi.mousePos(this.element,e)),wi.addEventListener(window,"mousemove",this.mousemove),wi.addEventListener(window,"mouseup",this.mouseup);},this.mousemove=e=>{this.move(e,wi.mousePos(this.element,e));},this.mouseup=e=>{this._rotatePitchHanlder.dragEnd(e),this.offTemp();},this.touchstart=e=>{1!==e.targetTouches.length?this.reset():(this._startPos=this._lastPos=wi.touchPos(this.element,e.targetTouches)[0],this.startMove(e,this._startPos),wi.addEventListener(window,"touchmove",this.touchmove,{passive:!1}),wi.addEventListener(window,"touchend",this.touchend));},this.touchmove=e=>{1!==e.targetTouches.length?this.reset():(this._lastPos=wi.touchPos(this.element,e.targetTouches)[0],this.move(e,this._lastPos));},this.touchend=e=>{0===e.targetTouches.length&&this._startPos&&this._lastPos&&this._startPos.dist(this._lastPos){this._rotatePitchHanlder.reset(),delete this._startPos,delete this._lastPos,this.offTemp();},this._clickTolerance=10,this.element=i;const o=new 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e=this.element;wi.removeEventListener(e,"mousedown",this.mousedown),wi.removeEventListener(e,"touchstart",this.touchstart,{passive:!1}),wi.removeEventListener(window,"touchmove",this.touchmove,{passive:!1}),wi.removeEventListener(window,"touchend",this.touchend),wi.removeEventListener(e,"touchcancel",this.reset),this.offTemp();}offTemp(){wi.enableDrag(),wi.removeEventListener(window,"mousemove",this.mousemove),wi.removeEventListener(window,"mouseup",this.mouseup),wi.removeEventListener(window,"touchmove",this.touchmove,{passive:!1}),wi.removeEventListener(window,"touchend",this.touchend);}}let ns;function ls(e,i,r){const o=new t.LngLat(e.lng,e.lat);if(e=new t.LngLat(e.lng,e.lat),i){const o=new t.LngLat(e.lng-360,e.lat),a=new t.LngLat(e.lng+360,e.lat),s=r.locationToScreenPoint(e).distSqr(i);r.locationToScreenPoint(o).distSqr(i)180;){const t=r.locationToScreenPoint(e);if(t.x>=0&&t.y>=0&&t.x<=r.width&&t.y<=r.height)break;e.lng>r.center.lng?e.lng-=360:e.lng+=360;}return e.lng!==o.lng&&r.isPointOnMapSurface(r.locationToScreenPoint(e))?e:o}const cs={center:"translate(-50%,-50%)",top:"translate(-50%,0)","top-left":"translate(0,0)","top-right":"translate(-100%,0)",bottom:"translate(-50%,-100%)","bottom-left":"translate(0,-100%)","bottom-right":"translate(-100%,-100%)",left:"translate(0,-50%)",right:"translate(-100%,-50%)"};function hs(e,t,i){const r=e.classList;for(const e in cs)r.remove(`maplibregl-${i}-anchor-${e}`);r.add(`maplibregl-${i}-anchor-${t}`);}class us extends t.Evented{constructor(e){if(super(),this._onKeyPress=e=>{const t=e.code,i=e.charCode||e.keyCode;"Space"!==t&&"Enter"!==t&&32!==i&&13!==i||this.togglePopup();},this._onMapClick=e=>{const t=e.originalEvent.target,i=this._element;this._popup&&(t===i||i.contains(t))&&this.togglePopup();},this._update=e=>{var t;if(!this._map)return;const i=this._map.loaded()&&!this._map.isMoving();("terrain"===(null==e?void 0:e.type)||"render"===(null==e?void 0:e.type)&&!i)&&this._map.once("render",this._update),this._lngLat=this._map.transform.renderWorldCopies?ls(this._lngLat,this._flatPos,this._map.transform):null===(t=this._lngLat)||void 0===t?void 0:t.wrap(),this._flatPos=this._pos=this._map.project(this._lngLat)._add(this._offset),this._map.terrain&&(this._flatPos=this._map.transform.locationToScreenPoint(this._lngLat)._add(this._offset));let r="";"viewport"===this._rotationAlignment||"auto"===this._rotationAlignment?r=`rotateZ(${this._rotation}deg)`:"map"===this._rotationAlignment&&(r=`rotateZ(${this._rotation-this._map.getBearing()}deg)`);let o="";"viewport"===this._pitchAlignment||"auto"===this._pitchAlignment?o="rotateX(0deg)":"map"===this._pitchAlignment&&(o=`rotateX(${this._map.getPitch()}deg)`),this._subpixelPositioning||e&&"moveend"!==e.type||(this._pos=this._pos.round()),wi.setTransform(this._element,`${cs[this._anchor]} translate(${this._pos.x}px, ${this._pos.y}px) ${o} ${r}`),f.frameAsync(new AbortController).then((()=>{this._updateOpacity(e&&"moveend"===e.type);})).catch((()=>{}));},this._onMove=e=>{if(!this._isDragging){const t=this._clickTolerance||this._map._clickTolerance;this._isDragging=e.point.dist(this._pointerdownPos)>=t;}this._isDragging&&(this._pos=e.point.sub(this._positionDelta),this._lngLat=this._map.unproject(this._pos),this.setLngLat(this._lngLat),this._element.style.pointerEvents="none","pending"===this._state&&(this._state="active",this.fire(new t.Event("dragstart"))),this.fire(new t.Event("drag")));},this._onUp=()=>{this._element.style.pointerEvents="auto",this._positionDelta=null,this._pointerdownPos=null,this._isDragging=!1,this._map.off("mousemove",this._onMove),this._map.off("touchmove",this._onMove),"active"===this._state&&this.fire(new t.Event("dragend")),this._state="inactive";},this._addDragHandler=e=>{this._element.contains(e.originalEvent.target)&&(e.preventDefault(),this._positionDelta=e.point.sub(this._pos).add(this._offset),this._pointerdownPos=e.point,this._state="pending",this._map.on("mousemove",this._onMove),this._map.on("touchmove",this._onMove),this._map.once("mouseup",this._onUp),this._map.once("touchend",this._onUp));},this._anchor=e&&e.anchor||"center",this._color=e&&e.color||"#3FB1CE",this._scale=e&&e.scale||1,this._draggable=e&&e.draggable||!1,this._clickTolerance=e&&e.clickTolerance||0,this._subpixelPositioning=e&&e.subpixelPositioning||!1,this._isDragging=!1,this._state="inactive",this._rotation=e&&e.rotation||0,this._rotationAlignment=e&&e.rotationAlignment||"auto",this._pitchAlignment=e&&e.pitchAlignment&&"auto"!==e.pitchAlignment?e.pitchAlignment:this._rotationAlignment,this.setOpacity(),this.setOpacity(null==e?void 0:e.opacity,null==e?void 0:e.opacityWhenCovered),e&&e.element)this._element=e.element,this._offset=t.Point.convert(e&&e.offset||[0,0]);else {this._defaultMarker=!0,this._element=wi.create("div");const i=wi.createNS("http://www.w3.org/2000/svg","svg"),r=41,o=27;i.setAttributeNS(null,"display","block"),i.setAttributeNS(null,"height",`${r}px`),i.setAttributeNS(null,"width",`${o}px`),i.setAttributeNS(null,"viewBox",`0 0 ${o} ${r}`);const a=wi.createNS("http://www.w3.org/2000/svg","g");a.setAttributeNS(null,"stroke","none"),a.setAttributeNS(null,"stroke-width","1"),a.setAttributeNS(null,"fill","none"),a.setAttributeNS(null,"fill-rule","evenodd");const s=wi.createNS("http://www.w3.org/2000/svg","g");s.setAttributeNS(null,"fill-rule","nonzero");const n=wi.createNS("http://www.w3.org/2000/svg","g");n.setAttributeNS(null,"transform","translate(3.0, 29.0)"),n.setAttributeNS(null,"fill","#000000");const 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p=wi.createNS("http://www.w3.org/2000/svg","g");p.setAttributeNS(null,"transform","translate(8.0, 8.0)");const m=wi.createNS("http://www.w3.org/2000/svg","circle");m.setAttributeNS(null,"fill","#000000"),m.setAttributeNS(null,"opacity","0.25"),m.setAttributeNS(null,"cx","5.5"),m.setAttributeNS(null,"cy","5.5"),m.setAttributeNS(null,"r","5.4999962");const f=wi.createNS("http://www.w3.org/2000/svg","circle");f.setAttributeNS(null,"fill","#FFFFFF"),f.setAttributeNS(null,"cx","5.5"),f.setAttributeNS(null,"cy","5.5"),f.setAttributeNS(null,"r","5.4999962"),p.appendChild(m),p.appendChild(f),s.appendChild(n),s.appendChild(c),s.appendChild(u),s.appendChild(_),s.appendChild(p),i.appendChild(s),i.setAttributeNS(null,"height",r*this._scale+"px"),i.setAttributeNS(null,"width",o*this._scale+"px"),this._element.appendChild(i),this._offset=t.Point.convert(e&&e.offset||[0,-14]);}if(this._element.classList.add("maplibregl-marker"),this._element.addEventListener("dragstart",(e=>{e.preventDefault();})),this._element.addEventListener("mousedown",(e=>{e.preventDefault();})),hs(this._element,this._anchor,"marker"),e&&e.className)for(const t of e.className.split(" "))this._element.classList.add(t);this._popup=null;}addTo(e){return this.remove(),this._map=e,this._element.setAttribute("aria-label",e._getUIString("Marker.Title")),e.getCanvasContainer().appendChild(this._element),e.on("move",this._update),e.on("moveend",this._update),e.on("terrain",this._update),e.on("projectiontransition",this._update),this.setDraggable(this._draggable),this._update(),this._map.on("click",this._onMapClick),this}remove(){return this._opacityTimeout&&(clearTimeout(this._opacityTimeout),delete this._opacityTimeout),this._map&&(this._map.off("click",this._onMapClick),this._map.off("move",this._update),this._map.off("moveend",this._update),this._map.off("terrain",this._update),this._map.off("projectiontransition",this._update),this._map.off("mousedown",this._addDragHandler),this._map.off("touchstart",this._addDragHandler),this._map.off("mouseup",this._onUp),this._map.off("touchend",this._onUp),this._map.off("mousemove",this._onMove),this._map.off("touchmove",this._onMove),delete this._map),wi.remove(this._element),this._popup&&this._popup.remove(),this}getLngLat(){return this._lngLat}setLngLat(e){return this._lngLat=t.LngLat.convert(e),this._pos=null,this._popup&&this._popup.setLngLat(this._lngLat),this._update(),this}getElement(){return this._element}setPopup(e){if(this._popup&&(this._popup.remove(),this._popup=null,this._element.removeEventListener("keypress",this._onKeyPress),this._originalTabIndex||this._element.removeAttribute("tabindex")),e){if(!("offset"in e.options)){const t=38.1,i=13.5,r=Math.abs(i)/Math.SQRT2;e.options.offset=this._defaultMarker?{top:[0,0],"top-left":[0,0],"top-right":[0,0],bottom:[0,-t],"bottom-left":[r,-1*(t-i+r)],"bottom-right":[-r,-1*(t-i+r)],left:[i,-1*(t-i)],right:[-i,-1*(t-i)]}:this._offset;}this._popup=e,this._originalTabIndex=this._element.getAttribute("tabindex"),this._originalTabIndex||this._element.setAttribute("tabindex","0"),this._element.addEventListener("keypress",this._onKeyPress);}return this}setSubpixelPositioning(e){return this._subpixelPositioning=e,this}getPopup(){return this._popup}togglePopup(){const e=this._popup;return this._element.style.opacity===this._opacityWhenCovered?this:e?(e.isOpen()?e.remove():(e.setLngLat(this._lngLat),e.addTo(this._map)),this):this}_updateOpacity(e=!1){var i,r;if(!(null===(i=this._map)||void 0===i?void 0:i.terrain)){const e=this._map.transform.isLocationOccluded(this._lngLat)?this._opacityWhenCovered:this._opacity;return void(this._element.style.opacity!==e&&(this._element.style.opacity=e))}if(e)this._opacityTimeout=null;else {if(this._opacityTimeout)return;this._opacityTimeout=setTimeout((()=>{this._opacityTimeout=null;}),100);}const o=this._map,a=o.terrain.depthAtPoint(this._pos),s=o.terrain.getElevationForLngLatZoom(this._lngLat,o.transform.tileZoom);if(o.transform.lngLatToCameraDepth(this._lngLat,s)-a<.006)return void(this._element.style.opacity=this._opacity);const n=-this._offset.y/o.transform.pixelsPerMeter,l=Math.sin(o.getPitch()*Math.PI/180)*n,c=o.terrain.depthAtPoint(new t.Point(this._pos.x,this._pos.y-this._offset.y)),h=o.transform.lngLatToCameraDepth(this._lngLat,s+l)-c>.006;(null===(r=this._popup)||void 0===r?void 0:r.isOpen())&&h&&this._popup.remove(),this._element.style.opacity=h?this._opacityWhenCovered:this._opacity;}getOffset(){return this._offset}setOffset(e){return this._offset=t.Point.convert(e),this._update(),this}addClassName(e){this._element.classList.add(e);}removeClassName(e){this._element.classList.remove(e);}toggleClassName(e){return this._element.classList.toggle(e)}setDraggable(e){return this._draggable=!!e,this._map&&(e?(this._map.on("mousedown",this._addDragHandler),this._map.on("touchstart",this._addDragHandler)):(this._map.off("mousedown",this._addDragHandler),this._map.off("touchstart",this._addDragHandler))),this}isDraggable(){return this._draggable}setRotation(e){return this._rotation=e||0,this._update(),this}getRotation(){return this._rotation}setRotationAlignment(e){return this._rotationAlignment=e||"auto",this._update(),this}getRotationAlignment(){return this._rotationAlignment}setPitchAlignment(e){return this._pitchAlignment=e&&"auto"!==e?e:this._rotationAlignment,this._update(),this}getPitchAlignment(){return this._pitchAlignment}setOpacity(e,t){return void 0===e&&void 0===t&&(this._opacity="1",this._opacityWhenCovered="0.2"),void 0!==e&&(this._opacity=e),void 0!==t&&(this._opacityWhenCovered=t),this._map&&this._updateOpacity(!0),this}}const ds={positionOptions:{enableHighAccuracy:!1,maximumAge:0,timeout:6e3},fitBoundsOptions:{maxZoom:15},trackUserLocation:!1,showAccuracyCircle:!0,showUserLocation:!0};let _s=0,ps=!1;const ms={maxWidth:100,unit:"metric"};function fs(e,t,i){const r=i&&i.maxWidth||100,o=e._container.clientHeight/2,a=e._container.clientWidth/2,s=e.unproject([a-r/2,o]),n=e.unproject([a+r/2,o]),l=Math.round(e.project(n).x-e.project(s).x),c=Math.min(r,l,e._container.clientWidth),h=s.distanceTo(n);if(i&&"imperial"===i.unit){const i=3.2808*h;i>5280?gs(t,c,i/5280,e._getUIString("ScaleControl.Miles")):gs(t,c,i,e._getUIString("ScaleControl.Feet"));}else i&&"nautical"===i.unit?gs(t,c,h/1852,e._getUIString("ScaleControl.NauticalMiles")):h>=1e3?gs(t,c,h/1e3,e._getUIString("ScaleControl.Kilometers")):gs(t,c,h,e._getUIString("ScaleControl.Meters"));}function gs(e,t,i,r){const o=function(e){const t=Math.pow(10,`${Math.floor(e)}`.length-1);let i=e/t;return i=i>=10?10:i>=5?5:i>=3?3:i>=2?2:i>=1?1:function(e){const t=Math.pow(10,Math.ceil(-Math.log(e)/Math.LN10));return Math.round(e*t)/t}(i),t*i}(i);e.style.width=t*(o/i)+"px",e.innerHTML=`${o} ${r}`;}const vs={closeButton:!0,closeOnClick:!0,focusAfterOpen:!0,className:"",maxWidth:"240px",subpixelPositioning:!1},ys=["a[href]","[tabindex]:not([tabindex='-1'])","[contenteditable]:not([contenteditable='false'])","button:not([disabled])","input:not([disabled])","select:not([disabled])","textarea:not([disabled])"].join(", ");function xs(e){if(e){if("number"==typeof e){const i=Math.round(Math.abs(e)/Math.SQRT2);return {center:new t.Point(0,0),top:new t.Point(0,e),"top-left":new t.Point(i,i),"top-right":new t.Point(-i,i),bottom:new t.Point(0,-e),"bottom-left":new t.Point(i,-i),"bottom-right":new t.Point(-i,-i),left:new t.Point(e,0),right:new t.Point(-e,0)}}if(e instanceof t.Point||Array.isArray(e)){const i=t.Point.convert(e);return {center:i,top:i,"top-left":i,"top-right":i,bottom:i,"bottom-left":i,"bottom-right":i,left:i,right:i}}return {center:t.Point.convert(e.center||[0,0]),top:t.Point.convert(e.top||[0,0]),"top-left":t.Point.convert(e["top-left"]||[0,0]),"top-right":t.Point.convert(e["top-right"]||[0,0]),bottom:t.Point.convert(e.bottom||[0,0]),"bottom-left":t.Point.convert(e["bottom-left"]||[0,0]),"bottom-right":t.Point.convert(e["bottom-right"]||[0,0]),left:t.Point.convert(e.left||[0,0]),right:t.Point.convert(e.right||[0,0])}}return xs(new t.Point(0,0))}const bs=Ti,ws=r(o),Ts=window.benchmarks=[];function Es(e,t,i,r){const o=[];for(const e of ["https://api.maptiler.com/maps/streets/style.json?key=get_your_own_OpIi9ZULNHzrESv6T2vL"])o.push({name:"string"==typeof e?e:e.name,bench:new t(e,i)});Ts.push({name:e,versions:o,location:r});}Es("StyleLayerCreate",Ka),Es("Validate",Ha),ws.forEach((e=>Es("Layout",bi,e.tileID,e))),ws.forEach((e=>Es("Paint",Ga,[e],e))),Es("QueryPoint",Ja,ws),Es("QueryBox",Qa,ws),Promise.resolve().then((()=>{B().acquire(-1);}));class Ps extends a{constructor(e){super(),this._pitch=e;}bench(){const e=new Jt,i=new _i(e,!0);i.setCenter(new t.LngLat(0,0)),i.setZoom(4),i.resize(4096,4096),i.setMaxPitch(this._pitch),i.setPitch(this._pitch);for(let e=0;e<40;e++)i.setCenter(new t.LngLat(.2*e,0)),ve(i,{tileSize:256});}}const Is=r(o).filter((e=>e.zoom<15));function Cs(e,t){window.maplibreglBenchmarks[e]=window.maplibreglBenchmarks[e]||{},window.maplibreglBenchmarks[e]["main bde599c"]=t;}window.maplibreglBenchmarks=window.maplibreglBenchmarks||{};const Ms="https://api.maptiler.com/maps/streets/style.json?key=get_your_own_OpIi9ZULNHzrESv6T2vL",Ss=[-77.032194,38.912753],Rs=[4,8,11,13,15,17].map((e=>({center:Ss,zoom:e})));Cs("Paint",new Ga(Ms,Rs)),Cs("QueryPoint",new Ja(Ms,Rs)),Cs("QueryBox",new Qa(Ms,Rs)),Cs("Layout",new bi(Ms)),Cs("Placement",new class extends a{constructor(e,t){super(),this.style=e,this.locations=t;}setup(){return t.__awaiter(this,void 0,void 0,(function*(){try{this.maps=yield 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0:e.fullscreenElement;)t=t.shadowRoot.fullscreenElement;t===this._container!==this._fullscreen&&this._handleFullscreenChange();},this._onClickFullscreen=()=>{this._isFullscreen()?this._exitFullscreen():this._requestFullscreen();},this._fullscreen=!1,e&&e.container&&(e.container instanceof HTMLElement?this._container=e.container:t.warnOnce("Full screen control 'container' must be a DOM element.")),"onfullscreenchange"in document?this._fullscreenchange="fullscreenchange":"onmozfullscreenchange"in document?this._fullscreenchange="mozfullscreenchange":"onwebkitfullscreenchange"in document?this._fullscreenchange="webkitfullscreenchange":"onmsfullscreenchange"in document&&(this._fullscreenchange="MSFullscreenChange");}onAdd(e){return this._map=e,this._container||(this._container=this._map.getContainer()),this._controlContainer=wi.create("div","maplibregl-ctrl 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this._fullscreen}_handleFullscreenChange(){this._fullscreen=!this._fullscreen,this._fullscreenButton.classList.toggle("maplibregl-ctrl-shrink"),this._fullscreenButton.classList.toggle("maplibregl-ctrl-fullscreen"),this._updateTitle(),this._fullscreen?(this.fire(new t.Event("fullscreenstart")),this._prevCooperativeGesturesEnabled=this._map.cooperativeGestures.isEnabled(),this._map.cooperativeGestures.disable()):(this.fire(new t.Event("fullscreenend")),this._prevCooperativeGesturesEnabled&&this._map.cooperativeGestures.enable());}_exitFullscreen(){window.document.exitFullscreen?window.document.exitFullscreen():window.document.mozCancelFullScreen?window.document.mozCancelFullScreen():window.document.msExitFullscreen?window.document.msExitFullscreen():window.document.webkitCancelFullScreen?window.document.webkitCancelFullScreen():this._togglePseudoFullScreen();}_requestFullscreen(){this._container.requestFullscreen?this._container.requestFullscreen():this._container.mozRequestFullScreen?this._container.mozRequestFullScreen():this._container.msRequestFullscreen?this._container.msRequestFullscreen():this._container.webkitRequestFullscreen?this._container.webkitRequestFullscreen():this._togglePseudoFullScreen();}_togglePseudoFullScreen(){this._container.classList.toggle("maplibregl-pseudo-fullscreen"),this._handleFullscreenChange(),this._map.resize();}},e.GeoJSONSource=H,e.GeolocateControl=class extends t.Evented{constructor(e){super(),this._onSuccess=e=>{if(this._map){if(this._isOutOfMapMaxBounds(e))return this._setErrorState(),this.fire(new t.Event("outofmaxbounds",e)),this._updateMarker(),void this._finish();if(this.options.trackUserLocation)switch(this._lastKnownPosition=e,this._watchState){case"WAITING_ACTIVE":case"ACTIVE_LOCK":case"ACTIVE_ERROR":this._watchState="ACTIVE_LOCK",this._geolocateButton.classList.remove("maplibregl-ctrl-geolocate-waiting"),this._geolocateButton.classList.remove("maplibregl-ctrl-geolocate-active-error"),this._geolocateButton.classList.add("maplibregl-ctrl-geolocate-active");break;case"BACKGROUND":case"BACKGROUND_ERROR":this._watchState="BACKGROUND",this._geolocateButton.classList.remove("maplibregl-ctrl-geolocate-waiting"),this._geolocateButton.classList.remove("maplibregl-ctrl-geolocate-background-error"),this._geolocateButton.classList.add("maplibregl-ctrl-geolocate-background");break;default:throw new Error(`Unexpected watchState 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{if(3===e.code&&ps)return;this._setErrorState();}"OFF"!==this._watchState&&this.options.showUserLocation&&this._dotElement.classList.add("maplibregl-user-location-dot-stale"),this.fire(new t.Event("error",e)),this._finish();}},this._finish=()=>{this._timeoutId&&clearTimeout(this._timeoutId),this._timeoutId=void 0;},this._setupUI=()=>{this._map&&(this._container.addEventListener("contextmenu",(e=>e.preventDefault())),this._geolocateButton=wi.create("button","maplibregl-ctrl-geolocate",this._container),wi.create("span","maplibregl-ctrl-icon",this._geolocateButton).setAttribute("aria-hidden","true"),this._geolocateButton.type="button",this._geolocateButton.disabled=!0);},this._finishSetupUI=e=>{if(this._map){if(!1===e){t.warnOnce("Geolocation support is not available so the GeolocateControl will be disabled.");const e=this._map._getUIString("GeolocateControl.LocationNotAvailable");this._geolocateButton.disabled=!0,this._geolocateButton.title=e,this._geolocateButton.setAttribute("aria-label",e);}else {const e=this._map._getUIString("GeolocateControl.FindMyLocation");this._geolocateButton.disabled=!1,this._geolocateButton.title=e,this._geolocateButton.setAttribute("aria-label",e);}this.options.trackUserLocation&&(this._geolocateButton.setAttribute("aria-pressed","false"),this._watchState="OFF"),this.options.showUserLocation&&(this._dotElement=wi.create("div","maplibregl-user-location-dot"),this._userLocationDotMarker=new us({element:this._dotElement}),this._circleElement=wi.create("div","maplibregl-user-location-accuracy-circle"),this._accuracyCircleMarker=new us({element:this._circleElement,pitchAlignment:"map"}),this.options.trackUserLocation&&(this._watchState="OFF"),this._map.on("zoom",this._onZoom)),this._geolocateButton.addEventListener("click",(()=>this.trigger())),this._setup=!0,this.options.trackUserLocation&&this._map.on("movestart",(e=>{e.geolocateSource||"ACTIVE_LOCK"!==this._watchState||e.originalEvent&&"resize"===e.originalEvent.type||(this._watchState="BACKGROUND",this._geolocateButton.classList.add("maplibregl-ctrl-geolocate-background"),this._geolocateButton.classList.remove("maplibregl-ctrl-geolocate-active"),this.fire(new t.Event("trackuserlocationend")),this.fire(new t.Event("userlocationlostfocus")));}));}},this.options=t.extend({},ds,e);}onAdd(e){return this._map=e,this._container=wi.create("div","maplibregl-ctrl maplibregl-ctrl-group"),this._setupUI(),function(){return t.__awaiter(this,arguments,void 0,(function*(e=!1){if(void 0!==ns&&!e)return ns;if(void 0===window.navigator.permissions)return ns=!!window.navigator.geolocation,ns;try{const e=yield window.navigator.permissions.query({name:"geolocation"});ns="denied"!==e.state;}catch(e){ns=!!window.navigator.geolocation;}return ns}))}().then((e=>this._finishSetupUI(e))),this._container}onRemove(){void 0!==this._geolocationWatchID&&(window.navigator.geolocation.clearWatch(this._geolocationWatchID),this._geolocationWatchID=void 0),this.options.showUserLocation&&this._userLocationDotMarker&&this._userLocationDotMarker.remove(),this.options.showAccuracyCircle&&this._accuracyCircleMarker&&this._accuracyCircleMarker.remove(),wi.remove(this._container),this._map.off("zoom",this._onZoom),this._map=void 0,_s=0,ps=!1;}_isOutOfMapMaxBounds(e){const t=this._map.getMaxBounds(),i=e.coords;return t&&(i.longitudet.getEast()||i.latitudet.getNorth())}_setErrorState(){switch(this._watchState){case"WAITING_ACTIVE":this._watchState="ACTIVE_ERROR",this._geolocateButton.classList.remove("maplibregl-ctrl-geolocate-active"),this._geolocateButton.classList.add("maplibregl-ctrl-geolocate-active-error");break;case"ACTIVE_LOCK":this._watchState="ACTIVE_ERROR",this._geolocateButton.classList.remove("maplibregl-ctrl-geolocate-active"),this._geolocateButton.classList.add("maplibregl-ctrl-geolocate-active-error"),this._geolocateButton.classList.add("maplibregl-ctrl-geolocate-waiting");break;case"BACKGROUND":this._watchState="BACKGROUND_ERROR",this._geolocateButton.classList.remove("maplibregl-ctrl-geolocate-background"),this._geolocateButton.classList.add("maplibregl-ctrl-geolocate-background-error"),this._geolocateButton.classList.add("maplibregl-ctrl-geolocate-waiting");break;case"ACTIVE_ERROR":break;default:throw new Error(`Unexpected watchState 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t.Event("trackuserlocationstart"));break;case"WAITING_ACTIVE":case"ACTIVE_LOCK":case"ACTIVE_ERROR":case"BACKGROUND_ERROR":_s--,ps=!1,this._watchState="OFF",this._geolocateButton.classList.remove("maplibregl-ctrl-geolocate-waiting"),this._geolocateButton.classList.remove("maplibregl-ctrl-geolocate-active"),this._geolocateButton.classList.remove("maplibregl-ctrl-geolocate-active-error"),this._geolocateButton.classList.remove("maplibregl-ctrl-geolocate-background"),this._geolocateButton.classList.remove("maplibregl-ctrl-geolocate-background-error"),this.fire(new t.Event("trackuserlocationend"));break;case"BACKGROUND":this._watchState="ACTIVE_LOCK",this._geolocateButton.classList.remove("maplibregl-ctrl-geolocate-background"),this._lastKnownPosition&&this._updateCamera(this._lastKnownPosition),this.fire(new t.Event("trackuserlocationstart")),this.fire(new t.Event("userlocationfocus"));break;default:throw new Error(`Unexpected watchState ${this._watchState}`)}switch(this._watchState){case"WAITING_ACTIVE":this._geolocateButton.classList.add("maplibregl-ctrl-geolocate-waiting"),this._geolocateButton.classList.add("maplibregl-ctrl-geolocate-active");break;case"ACTIVE_LOCK":this._geolocateButton.classList.add("maplibregl-ctrl-geolocate-active");break;case"OFF":break;default:throw new Error(`Unexpected watchState ${this._watchState}`)}if("OFF"===this._watchState&&void 0!==this._geolocationWatchID)this._clearWatch();else if(void 0===this._geolocationWatchID){let e;this._geolocateButton.classList.add("maplibregl-ctrl-geolocate-waiting"),this._geolocateButton.setAttribute("aria-pressed","true"),_s++,_s>1?(e={maximumAge:6e5,timeout:0},ps=!0):(e=this.options.positionOptions,ps=!1),this._geolocationWatchID=window.navigator.geolocation.watchPosition(this._onSuccess,this._onError,e);}}else window.navigator.geolocation.getCurrentPosition(this._onSuccess,this._onError,this.options.positionOptions),this._timeoutId=setTimeout(this._finish,1e4);return !0}_clearWatch(){window.navigator.geolocation.clearWatch(this._geolocationWatchID),this._geolocationWatchID=void 0,this._geolocateButton.classList.remove("maplibregl-ctrl-geolocate-waiting"),this._geolocateButton.setAttribute("aria-pressed","false"),this.options.showUserLocation&&this._updateMarker(null);}},e.GlobeControl=class{constructor(){this._toggleProjection=()=>{var e;const t=null===(e=this._map.getProjection())||void 0===e?void 0:e.type;this._map.setProjection("mercator"!==t&&t?{type:"mercator"}:{type:"globe"}),this._updateGlobeIcon();},this._updateGlobeIcon=()=>{var e;this._globeButton.classList.remove("maplibregl-ctrl-globe"),this._globeButton.classList.remove("maplibregl-ctrl-globe-enabled"),"globe"===(null===(e=this._map.getProjection())||void 0===e?void 0:e.type)?(this._globeButton.classList.add("maplibregl-ctrl-globe-enabled"),this._globeButton.title=this._map._getUIString("GlobeControl.Disable")):(this._globeButton.classList.add("maplibregl-ctrl-globe"),this._globeButton.title=this._map._getUIString("GlobeControl.Enable"));};}onAdd(e){return this._map=e,this._container=wi.create("div","maplibregl-ctrl maplibregl-ctrl-group"),this._globeButton=wi.create("button","maplibregl-ctrl-globe",this._container),wi.create("span","maplibregl-ctrl-icon",this._globeButton).setAttribute("aria-hidden","true"),this._globeButton.type="button",this._globeButton.addEventListener("click",this._toggleProjection),this._updateGlobeIcon(),this._map.on("styledata",this._updateGlobeIcon),this._container}onRemove(){wi.remove(this._container),this._map.off("styledata",this._updateGlobeIcon),this._globeButton.removeEventListener("click",this._toggleProjection),this._map=void 0;}},e.Hash=Co,e.ImageSource=K,e.KeyboardHandler=ha,e.LngLatBounds=V,e.LogoControl=Ma,e.Map=Ua,e.MapMouseEvent=Bo,e.MapTouchEvent=Oo,e.MapWheelEvent=Uo,e.Marker=us,e.NavigationControl=class{constructor(e){this._updateZoomButtons=()=>{const e=this._map.getZoom(),t=e===this._map.getMaxZoom(),i=e===this._map.getMinZoom();this._zoomInButton.disabled=t,this._zoomOutButton.disabled=i,this._zoomInButton.setAttribute("aria-disabled",t.toString()),this._zoomOutButton.setAttribute("aria-disabled",i.toString());},this._rotateCompassArrow=()=>{this._compassIcon.style.transform=this.options.visualizePitch&&this.options.visualizeRoll?`scale(${1/Math.pow(Math.cos(this._map.transform.pitchInRadians),.5)}) rotateZ(${-this._map.transform.roll}deg) rotateX(${this._map.transform.pitch}deg) rotateZ(${-this._map.transform.bearing}deg)`:this.options.visualizePitch?`scale(${1/Math.pow(Math.cos(this._map.transform.pitchInRadians),.5)}) rotateX(${this._map.transform.pitch}deg) rotateZ(${-this._map.transform.bearing}deg)`:this.options.visualizeRoll?`rotate(${-this._map.transform.bearing-this._map.transform.roll}deg)`:`rotate(${-this._map.transform.bearing}deg)`;},this._setButtonTitle=(e,t)=>{const i=this._map._getUIString(`NavigationControl.${t}`);e.title=i,e.setAttribute("aria-label",i);},this.options=t.extend({},as,e),this._container=wi.create("div","maplibregl-ctrl maplibregl-ctrl-group"),this._container.addEventListener("contextmenu",(e=>e.preventDefault())),this.options.showZoom&&(this._zoomInButton=this._createButton("maplibregl-ctrl-zoom-in",(e=>this._map.zoomIn({},{originalEvent:e}))),wi.create("span","maplibregl-ctrl-icon",this._zoomInButton).setAttribute("aria-hidden","true"),this._zoomOutButton=this._createButton("maplibregl-ctrl-zoom-out",(e=>this._map.zoomOut({},{originalEvent:e}))),wi.create("span","maplibregl-ctrl-icon",this._zoomOutButton).setAttribute("aria-hidden","true")),this.options.showCompass&&(this._compass=this._createButton("maplibregl-ctrl-compass",(e=>{this.options.visualizePitch?this._map.resetNorthPitch({},{originalEvent:e}):this._map.resetNorth({},{originalEvent:e});})),this._compassIcon=wi.create("span","maplibregl-ctrl-icon",this._compass),this._compassIcon.setAttribute("aria-hidden","true"));}onAdd(e){return this._map=e,this.options.showZoom&&(this._setButtonTitle(this._zoomInButton,"ZoomIn"),this._setButtonTitle(this._zoomOutButton,"ZoomOut"),this._map.on("zoom",this._updateZoomButtons),this._updateZoomButtons()),this.options.showCompass&&(this._setButtonTitle(this._compass,"ResetBearing"),this.options.visualizePitch&&this._map.on("pitch",this._rotateCompassArrow),this.options.visualizeRoll&&this._map.on("roll",this._rotateCompassArrow),this._map.on("rotate",this._rotateCompassArrow),this._rotateCompassArrow(),this._handler=new ss(this._map,this._compass,this.options.visualizePitch)),this._container}onRemove(){wi.remove(this._container),this.options.showZoom&&this._map.off("zoom",this._updateZoomButtons),this.options.showCompass&&(this.options.visualizePitch&&this._map.off("pitch",this._rotateCompassArrow),this.options.visualizeRoll&&this._map.off("roll",this._rotateCompassArrow),this._map.off("rotate",this._rotateCompassArrow),this._handler.off(),delete this._handler),delete this._map;}_createButton(e,t){const i=wi.create("button",e,this._container);return i.type="button",i.addEventListener("click",t),i}},e.Popup=class extends t.Evented{constructor(e){super(),this.remove=()=>(this._content&&wi.remove(this._content),this._container&&(wi.remove(this._container),delete this._container),this._map&&(this._map.off("move",this._update),this._map.off("move",this._onClose),this._map.off("click",this._onClose),this._map.off("remove",this.remove),this._map.off("mousemove",this._onMouseMove),this._map.off("mouseup",this._onMouseUp),this._map.off("drag",this._onDrag),this._map._canvasContainer.classList.remove("maplibregl-track-pointer"),delete this._map,this.fire(new t.Event("close"))),this),this._onMouseUp=e=>{this._update(e.point);},this._onMouseMove=e=>{this._update(e.point);},this._onDrag=e=>{this._update(e.point);},this._update=e=>{var t;if(!this._map||!this._lngLat&&!this._trackPointer||!this._content)return;if(!this._container){if(this._container=wi.create("div","maplibregl-popup",this._map.getContainer()),this._tip=wi.create("div","maplibregl-popup-tip",this._container),this._container.appendChild(this._content),this.options.className)for(const e of this.options.className.split(" "))this._container.classList.add(e);this._closeButton&&this._closeButton.setAttribute("aria-label",this._map._getUIString("Popup.Close")),this._trackPointer&&this._container.classList.add("maplibregl-popup-track-pointer");}if(this.options.maxWidth&&this._container.style.maxWidth!==this.options.maxWidth&&(this._container.style.maxWidth=this.options.maxWidth),this._lngLat=this._map.transform.renderWorldCopies&&!this._trackPointer?ls(this._lngLat,this._flatPos,this._map.transform):null===(t=this._lngLat)||void 0===t?void 0:t.wrap(),this._trackPointer&&!e)return;const i=this._flatPos=this._pos=this._trackPointer&&e?e:this._map.project(this._lngLat);this._map.terrain&&(this._flatPos=this._trackPointer&&e?e:this._map.transform.locationToScreenPoint(this._lngLat));let r=this.options.anchor;const o=xs(this.options.offset);if(!r){const e=this._container.offsetWidth,t=this._container.offsetHeight;let a;a=i.y+o.bottom.ythis._map.transform.height-t?["bottom"]:[],i.xthis._map.transform.width-e/2&&a.push("right"),r=0===a.length?"bottom":a.join("-");}let a=i.add(o[r]);this.options.subpixelPositioning||(a=a.round()),wi.setTransform(this._container,`${cs[r]} translate(${a.x}px,${a.y}px)`),hs(this._container,r,"popup");},this._onClose=()=>{this.remove();},this.options=t.extend(Object.create(vs),e);}addTo(e){return this._map&&this.remove(),this._map=e,this.options.closeOnClick&&this._map.on("click",this._onClose),this.options.closeOnMove&&this._map.on("move",this._onClose),this._map.on("remove",this.remove),this._update(),this._focusFirstElement(),this._trackPointer?(this._map.on("mousemove",this._onMouseMove),this._map.on("mouseup",this._onMouseUp),this._container&&this._container.classList.add("maplibregl-popup-track-pointer"),this._map._canvasContainer.classList.add("maplibregl-track-pointer")):this._map.on("move",this._update),this.fire(new t.Event("open")),this}isOpen(){return !!this._map}getLngLat(){return this._lngLat}setLngLat(e){return this._lngLat=t.LngLat.convert(e),this._pos=null,this._flatPos=null,this._trackPointer=!1,this._update(),this._map&&(this._map.on("move",this._update),this._map.off("mousemove",this._onMouseMove),this._container&&this._container.classList.remove("maplibregl-popup-track-pointer"),this._map._canvasContainer.classList.remove("maplibregl-track-pointer")),this}trackPointer(){return this._trackPointer=!0,this._pos=null,this._flatPos=null,this._update(),this._map&&(this._map.off("move",this._update),this._map.on("mousemove",this._onMouseMove),this._map.on("drag",this._onDrag),this._container&&this._container.classList.add("maplibregl-popup-track-pointer"),this._map._canvasContainer.classList.add("maplibregl-track-pointer")),this}getElement(){return this._container}setText(e){return this.setDOMContent(document.createTextNode(e))}setHTML(e){const t=document.createDocumentFragment(),i=document.createElement("body");let r;for(i.innerHTML=e;r=i.firstChild,r;)t.appendChild(r);return this.setDOMContent(t)}getMaxWidth(){var e;return null===(e=this._container)||void 0===e?void 0:e.style.maxWidth}setMaxWidth(e){return this.options.maxWidth=e,this._update(),this}setDOMContent(e){if(this._content)for(;this._content.hasChildNodes();)this._content.firstChild&&this._content.removeChild(this._content.firstChild);else this._content=wi.create("div","maplibregl-popup-content",this._container);return this._content.appendChild(e),this._createCloseButton(),this._update(),this._focusFirstElement(),this}addClassName(e){return this._container&&this._container.classList.add(e),this}removeClassName(e){return this._container&&this._container.classList.remove(e),this}setOffset(e){return this.options.offset=e,this._update(),this}toggleClassName(e){if(this._container)return this._container.classList.toggle(e)}setSubpixelPositioning(e){this.options.subpixelPositioning=e;}_createCloseButton(){this.options.closeButton&&(this._closeButton=wi.create("button","maplibregl-popup-close-button",this._content),this._closeButton.type="button",this._closeButton.innerHTML="×",this._closeButton.addEventListener("click",this._onClose));}_focusFirstElement(){if(!this.options.focusAfterOpen||!this._container)return;const e=this._container.querySelector(ys);e&&e.focus();}},e.RasterDEMTileSource=$,e.RasterTileSource=X,e.ScaleControl=class{constructor(e){this._onMove=()=>{fs(this._map,this._container,this.options);},this.setUnit=e=>{this.options.unit=e,fs(this._map,this._container,this.options);},this.options=Object.assign(Object.assign({},ms),e);}getDefaultPosition(){return "bottom-left"}onAdd(e){return this._map=e,this._container=wi.create("div","maplibregl-ctrl maplibregl-ctrl-scale",e.getContainer()),this._map.on("move",this._onMove),this._onMove(),this._container}onRemove(){wi.remove(this._container),this._map.off("move",this._onMove),this._map=void 0;}},e.ScrollZoomHandler=_a,e.Style=gi,e.TerrainControl=class{constructor(e){this._toggleTerrain=()=>{this._map.getTerrain()?this._map.setTerrain(null):this._map.setTerrain(this.options),this._updateTerrainIcon();},this._updateTerrainIcon=()=>{this._terrainButton.classList.remove("maplibregl-ctrl-terrain"),this._terrainButton.classList.remove("maplibregl-ctrl-terrain-enabled"),this._map.terrain?(this._terrainButton.classList.add("maplibregl-ctrl-terrain-enabled"),this._terrainButton.title=this._map._getUIString("TerrainControl.Disable")):(this._terrainButton.classList.add("maplibregl-ctrl-terrain"),this._terrainButton.title=this._map._getUIString("TerrainControl.Enable"));},this.options=e;}onAdd(e){return this._map=e,this._container=wi.create("div","maplibregl-ctrl maplibregl-ctrl-group"),this._terrainButton=wi.create("button","maplibregl-ctrl-terrain",this._container),wi.create("span","maplibregl-ctrl-icon",this._terrainButton).setAttribute("aria-hidden","true"),this._terrainButton.type="button",this._terrainButton.addEventListener("click",this._toggleTerrain),this._updateTerrainIcon(),this._map.on("terrain",this._updateTerrainIcon),this._container}onRemove(){wi.remove(this._container),this._map.off("terrain",this._updateTerrainIcon),this._map=void 0;}},e.TwoFingersTouchPitchHandler=la,e.TwoFingersTouchRotateHandler=sa,e.TwoFingersTouchZoomHandler=oa,e.TwoFingersTouchZoomRotateHandler=ya,e.VectorTileSource=W,e.VideoSource=Y,e.addSourceType=(e,i)=>t.__awaiter(void 0,void 0,void 0,(function*(){if(ee(e))throw new Error(`A source type called "${e}" already exists.`);((e,t)=>{Q[e]=t;})(e,i);})),e.clearPrewarmedResources=function(){const e=k;e&&(e.isPreloaded()&&1===e.numActive()?(e.release(z),k=null):console.warn("Could not clear WebWorkers since there are active Map instances that still reference it. The pre-warmed WebWorker pool can only be cleared when all map instances have been removed with map.remove()"));},e.createTileMesh=Kt,e.getMaxParallelImageRequests=function(){return t.config.MAX_PARALLEL_IMAGE_REQUESTS},e.getRTLTextPluginStatus=function(){return oe().getRTLTextPluginStatus()},e.getVersion=function(){return bs},e.getWorkerCount=function(){return L.workerCount},e.getWorkerUrl=function(){return t.config.WORKER_URL},e.importScriptInWorkers=function(e){return U().broadcast("IS",e)},e.prewarm=function(){B().acquire(z);},e.setMaxParallelImageRequests=function(e){t.config.MAX_PARALLEL_IMAGE_REQUESTS=e;},e.setRTLTextPlugin=function(e,t){return oe().setRTLTextPlugin(e,t)},e.setWorkerCount=function(e){L.workerCount=e;},e.setWorkerUrl=function(e){t.config.WORKER_URL=e;};})); +define("index",["exports","./shared"],(function(e,t){"use strict";function i(){var e=new t.ARRAY_TYPE(4);return t.ARRAY_TYPE!=Float32Array&&(e[1]=0,e[2]=0),e[0]=1,e[3]=1,e}function r(e){return 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this.patterns){const{bin:i}=this.patterns[e],r=i.x+1,a=i.y+1,s=this.getImage(e).data,n=s.width,l=s.height;t.RGBAImage.copy(s,o,{x:0,y:0},{x:r,y:a},{width:n,height:l}),t.RGBAImage.copy(s,o,{x:0,y:l-1},{x:r,y:a-1},{width:n,height:1}),t.RGBAImage.copy(s,o,{x:0,y:0},{x:r,y:a+l},{width:n,height:1}),t.RGBAImage.copy(s,o,{x:n-1,y:0},{x:r-1,y:a},{width:1,height:l}),t.RGBAImage.copy(s,o,{x:0,y:0},{x:r+n,y:a},{width:1,height:l});}this.dirty=!0;}beginFrame(){this.callbackDispatchedThisFrame={};}dispatchRenderCallbacks(e){for(const i of e){if(this.callbackDispatchedThisFrame[i])continue;this.callbackDispatchedThisFrame[i]=!0;const e=this.getImage(i);e||t.warnOnce(`Image with ID: "${i}" was not found`),x(e)&&this.updateImage(i,e);}}}const w=1e20;function T(e,t,i,r,o,a,s,n,l){for(let c=t;c-1);l++,a[l]=n,s[l]=c,s[l+1]=w;}for(let n=0,l=0;n65535)throw new Error("glyphs > 65535 not supported");if(t.ranges[o])return {stack:e,id:i,glyph:r};if(!this.url)throw new Error("glyphsUrl is not set");if(!t.requests[o]){const i=P.loadGlyphRange(e,o,this.url,this.requestManager);t.requests[o]=i;}const a=yield t.requests[o];for(const e in a)this._doesCharSupportLocalGlyph(+e)||(t.glyphs[+e]=a[+e]);return t.ranges[o]=!0,{stack:e,id:i,glyph:a[i]||null}}))}_doesCharSupportLocalGlyph(e){return !!this.localIdeographFontFamily&&/\p{Ideo}|\p{sc=Hang}|\p{sc=Hira}|\p{sc=Kana}/u.test(String.fromCodePoint(e))}_tinySDF(e,i,r){const o=this.localIdeographFontFamily;if(!o)return;if(!this._doesCharSupportLocalGlyph(r))return;let a=e.tinySDF;if(!a){let t="400";/bold/i.test(i)?t="900":/medium/i.test(i)?t="500":/light/i.test(i)&&(t="200"),a=e.tinySDF=new P.TinySDF({fontSize:48,buffer:6,radius:16,cutoff:.25,fontFamily:o,fontWeight:t});}const s=a.draw(String.fromCharCode(r));return {id:r,bitmap:new t.AlphaImage({width:s.width||60,height:s.height||60},s.data),metrics:{width:s.glyphWidth/2||24,height:s.glyphHeight/2||24,left:s.glyphLeft/2+.5||0,top:s.glyphTop/2-27.5||-8,advance:s.glyphAdvance/2||24,isDoubleResolution:!0}}}}P.loadGlyphRange=function(e,i,r,o){return t.__awaiter(this,void 0,void 0,(function*(){const a=256*i,s=a+255,n=o.transformRequest(r.replace("{fontstack}",e).replace("{range}",`${a}-${s}`),"Glyphs"),l=yield t.getArrayBuffer(n,new AbortController);if(!l||!l.data)throw new Error(`Could not load glyph range. range: ${i}, ${a}-${s}`);const c={};for(const e of t.parseGlyphPbf(l.data))c[e.id]=e;return c}))},P.TinySDF=class{constructor({fontSize:e=24,buffer:t=3,radius:i=8,cutoff:r=.25,fontFamily:o="sans-serif",fontWeight:a="normal",fontStyle:s="normal"}={}){this.buffer=t,this.cutoff=r,this.radius=i;const n=this.size=e+4*t,l=this._createCanvas(n),c=this.ctx=l.getContext("2d",{willReadFrequently:!0});c.font=`${s} ${a} ${e}px ${o}`,c.textBaseline="alphabetic",c.textAlign="left",c.fillStyle="black",this.gridOuter=new Float64Array(n*n),this.gridInner=new Float64Array(n*n),this.f=new Float64Array(n),this.z=new Float64Array(n+1),this.v=new Uint16Array(n);}_createCanvas(e){const t=document.createElement("canvas");return t.width=t.height=e,t}draw(e){const{width:t,actualBoundingBoxAscent:i,actualBoundingBoxDescent:r,actualBoundingBoxLeft:o,actualBoundingBoxRight:a}=this.ctx.measureText(e),s=Math.ceil(i),n=Math.max(0,Math.min(this.size-this.buffer,Math.ceil(a-o))),l=Math.min(this.size-this.buffer,s+Math.ceil(r)),c=n+2*this.buffer,h=l+2*this.buffer,u=Math.max(c*h,0),d=new Uint8ClampedArray(u),_={data:d,width:c,height:h,glyphWidth:n,glyphHeight:l,glyphTop:s,glyphLeft:0,glyphAdvance:t};if(0===n||0===l)return _;const{ctx:p,buffer:m,gridInner:f,gridOuter:g}=this;p.clearRect(m,m,n,l),p.fillText(e,m,m+s);const v=p.getImageData(m,m,n,l);g.fill(w,0,u),f.fill(0,0,u);for(let e=0;e0?e*e:0,f[r]=e<0?e*e:0;}}T(g,0,0,c,h,c,this.f,this.v,this.z),T(f,m,m,n,l,c,this.f,this.v,this.z);for(let e=0;e1&&(s=e[++a]);const l=Math.abs(n-s.left),c=Math.abs(n-s.right),h=Math.min(l,c);let u;const d=t/i*(r+1);if(s.isDash){const e=r-Math.abs(d);u=Math.sqrt(h*h+e*e);}else u=r-Math.sqrt(h*h+d*d);this.data[o+n]=Math.max(0,Math.min(255,u+128));}}}addRegularDash(e){for(let t=e.length-1;t>=0;--t){const i=e[t],r=e[t+1];i.zeroLength?e.splice(t,1):r&&r.isDash===i.isDash&&(r.left=i.left,e.splice(t,1));}const t=e[0],i=e[e.length-1];t.isDash===i.isDash&&(t.left=i.left-this.width,i.right=t.right+this.width);const r=this.width*this.nextRow;let o=0,a=e[o];for(let t=0;t1&&(a=e[++o]);const i=Math.abs(t-a.left),s=Math.abs(t-a.right),n=Math.min(i,s);this.data[r+t]=Math.max(0,Math.min(255,(a.isDash?n:-n)+128));}}addDash(e,i){const r=i?7:0,o=2*r+1;if(this.nextRow+o>this.height)return t.warnOnce("LineAtlas out of space"),null;let a=0;for(let t=0;t{e.terminate();})),this.workers=null);}isPreloaded(){return !!this.active[z]}numActive(){return Object.keys(this.active).length}}const A=Math.floor(f.hardwareConcurrency/2);let k,F;function B(){return k||(k=new L),k}L.workerCount=t.isSafari(globalThis)?Math.max(Math.min(A,3),1):1;class O{constructor(e,i){this.workerPool=e,this.actors=[],this.currentActor=0,this.id=i;const r=this.workerPool.acquire(i);for(let e=0;e{e.remove();})),this.actors=[],e&&this.workerPool.release(this.id);}registerMessageHandler(e,t){for(const i of this.actors)i.registerMessageHandler(e,t);}}function U(){return F||(F=new O(B(),t.GLOBAL_DISPATCHER_ID),F.registerMessageHandler("GR",((e,i,r)=>t.makeRequest(i,r)))),F}function j(e,i){const r=t.create();return t.translate(r,r,[1,1,0]),t.scale(r,r,[.5*e.width,.5*e.height,1]),e.calculatePosMatrix?t.multiply(r,r,e.calculatePosMatrix(i.toUnwrapped())):r}function N(e,t,i,r,o,a){var s;const n=function(e,t,i){if(e)for(const r of e){const e=t[r];if(e&&e.source===i&&"fill-extrusion"===e.type)return !0}else for(const e in t){const r=t[e];if(r.source===i&&"fill-extrusion"===r.type)return !0}return !1}(null!==(s=null==o?void 0:o.layers)&&void 0!==s?s:null,t,e.id),l=a.maxPitchScaleFactor(),c=e.tilesIn(r,l,n);c.sort(G);const h=[];for(const r of c)h.push({wrappedTileID:r.tileID.wrapped().key,queryResults:r.tile.queryRenderedFeatures(t,i,e._state,r.queryGeometry,r.cameraQueryGeometry,r.scale,o,a,l,j(e.transform,r.tileID))});const u=function(e){const t={},i={};for(const r of e){const e=r.queryResults,o=r.wrappedTileID,a=i[o]=i[o]||{};for(const i in e){const r=e[i],o=a[i]=a[i]||{},s=t[i]=t[i]||[];for(const e of r)o[e.featureIndex]||(o[e.featureIndex]=!0,s.push(e));}}return t}(h);for(const t in u)u[t].forEach((t=>{const i=t.feature,r=e.getFeatureState(i.layer["source-layer"],i.id);i.source=i.layer.source,i.layer["source-layer"]&&(i.sourceLayer=i.layer["source-layer"]),i.state=r;}));return u}function G(e,t){const i=e.tileID,r=t.tileID;return i.overscaledZ-r.overscaledZ||i.canonical.y-r.canonical.y||i.wrap-r.wrap||i.canonical.x-r.canonical.x}function Z(e,i,r){return t.__awaiter(this,void 0,void 0,(function*(){let o=e;if(e.url?o=(yield t.getJSON(i.transformRequest(e.url,"Source"),r)).data:yield f.frameAsync(r),!o)return null;const a=t.pick(t.extend(o,e),["tiles","minzoom","maxzoom","attribution","bounds","scheme","tileSize","encoding"]);return "vector_layers"in o&&o.vector_layers&&(a.vectorLayerIds=o.vector_layers.map((e=>e.id))),a}))}class V{constructor(e,t){e&&(t?this.setSouthWest(e).setNorthEast(t):Array.isArray(e)&&(4===e.length?this.setSouthWest([e[0],e[1]]).setNorthEast([e[2],e[3]]):this.setSouthWest(e[0]).setNorthEast(e[1])));}setNorthEast(e){return this._ne=e instanceof t.LngLat?new t.LngLat(e.lng,e.lat):t.LngLat.convert(e),this}setSouthWest(e){return this._sw=e instanceof t.LngLat?new t.LngLat(e.lng,e.lat):t.LngLat.convert(e),this}extend(e){const i=this._sw,r=this._ne;let o,a;if(e instanceof t.LngLat)o=e,a=e;else {if(!(e instanceof V))return Array.isArray(e)?4===e.length||e.every(Array.isArray)?this.extend(V.convert(e)):this.extend(t.LngLat.convert(e)):e&&("lng"in e||"lon"in e)&&"lat"in e?this.extend(t.LngLat.convert(e)):this;if(o=e._sw,a=e._ne,!o||!a)return this}return i||r?(i.lng=Math.min(o.lng,i.lng),i.lat=Math.min(o.lat,i.lat),r.lng=Math.max(a.lng,r.lng),r.lat=Math.max(a.lat,r.lat)):(this._sw=new t.LngLat(o.lng,o.lat),this._ne=new t.LngLat(a.lng,a.lat)),this}getCenter(){return new t.LngLat((this._sw.lng+this._ne.lng)/2,(this._sw.lat+this._ne.lat)/2)}getSouthWest(){return this._sw}getNorthEast(){return this._ne}getNorthWest(){return new t.LngLat(this.getWest(),this.getNorth())}getSouthEast(){return new t.LngLat(this.getEast(),this.getSouth())}getWest(){return this._sw.lng}getSouth(){return this._sw.lat}getEast(){return this._ne.lng}getNorth(){return this._ne.lat}toArray(){return [this._sw.toArray(),this._ne.toArray()]}toString(){return `LngLatBounds(${this._sw.toString()}, ${this._ne.toString()})`}isEmpty(){return !(this._sw&&this._ne)}contains(e){const{lng:i,lat:r}=t.LngLat.convert(e);let o=this._sw.lng<=i&&i<=this._ne.lng;return this._sw.lng>this._ne.lng&&(o=this._sw.lng>=i&&i>=this._ne.lng),this._sw.lat<=r&&r<=this._ne.lat&&o}static convert(e){return e instanceof V?e:e?new V(e):e}static fromLngLat(e,i=0){const r=360*i/40075017,o=r/Math.cos(Math.PI/180*e.lat);return new V(new t.LngLat(e.lng-o,e.lat-r),new t.LngLat(e.lng+o,e.lat+r))}adjustAntiMeridian(){const e=new t.LngLat(this._sw.lng,this._sw.lat),i=new t.LngLat(this._ne.lng,this._ne.lat);return new V(e,e.lng>i.lng?new t.LngLat(i.lng+360,i.lat):i)}}class q{constructor(e,t,i){this.bounds=V.convert(this.validateBounds(e)),this.minzoom=t||0,this.maxzoom=i||24;}validateBounds(e){return Array.isArray(e)&&4===e.length?[Math.max(-180,e[0]),Math.max(-90,e[1]),Math.min(180,e[2]),Math.min(90,e[3])]:[-180,-90,180,90]}contains(e){const i=Math.pow(2,e.z),r=Math.floor(t.mercatorXfromLng(this.bounds.getWest())*i),o=Math.floor(t.mercatorYfromLat(this.bounds.getNorth())*i),a=Math.ceil(t.mercatorXfromLng(this.bounds.getEast())*i),s=Math.ceil(t.mercatorYfromLat(this.bounds.getSouth())*i);return e.x>=r&&e.x=o&&e.y{this._options.tiles=e;})),this}setUrl(e){return this.setSourceProperty((()=>{this.url=e,this._options.url=e;})),this}onRemove(){this._tileJSONRequest&&(this._tileJSONRequest.abort(),this._tileJSONRequest=null);}serialize(){return t.extend({},this._options)}loadTile(e){return t.__awaiter(this,void 0,void 0,(function*(){const t=e.tileID.canonical.url(this.tiles,this.map.getPixelRatio(),this.scheme),i={request:this.map._requestManager.transformRequest(t,"Tile"),uid:e.uid,tileID:e.tileID,zoom:e.tileID.overscaledZ,tileSize:this.tileSize*e.tileID.overscaleFactor(),type:this.type,source:this.id,pixelRatio:this.map.getPixelRatio(),showCollisionBoxes:this.map.showCollisionBoxes,promoteId:this.promoteId,subdivisionGranularity:this.map.style.projection.subdivisionGranularity};i.request.collectResourceTiming=this._collectResourceTiming;let r="RT";if(e.actor&&"expired"!==e.state){if("loading"===e.state)return new Promise(((t,i)=>{e.reloadPromise={resolve:t,reject:i};}))}else e.actor=this.dispatcher.getActor(),r="LT";e.abortController=new AbortController;try{const t=yield e.actor.sendAsync({type:r,data:i},e.abortController);if(delete e.abortController,e.aborted)return;this._afterTileLoadWorkerResponse(e,t);}catch(t){if(delete e.abortController,e.aborted)return;if(t&&404!==t.status)throw t;this._afterTileLoadWorkerResponse(e,null);}}))}_afterTileLoadWorkerResponse(e,t){if(t&&t.resourceTiming&&(e.resourceTiming=t.resourceTiming),t&&this.map._refreshExpiredTiles&&e.setExpiryData(t),e.loadVectorData(t,this.map.painter),e.reloadPromise){const t=e.reloadPromise;e.reloadPromise=null,this.loadTile(e).then(t.resolve).catch(t.reject);}}abortTile(e){return t.__awaiter(this,void 0,void 0,(function*(){e.abortController&&(e.abortController.abort(),delete e.abortController),e.actor&&(yield e.actor.sendAsync({type:"AT",data:{uid:e.uid,type:this.type,source:this.id}}));}))}unloadTile(e){return t.__awaiter(this,void 0,void 0,(function*(){e.unloadVectorData(),e.actor&&(yield e.actor.sendAsync({type:"RMT",data:{uid:e.uid,type:this.type,source:this.id}}));}))}hasTransition(){return !1}}class X extends t.Evented{constructor(e,i,r,o){super(),this.id=e,this.dispatcher=r,this.setEventedParent(o),this.type="raster",this.minzoom=0,this.maxzoom=22,this.roundZoom=!0,this.scheme="xyz",this.tileSize=512,this._loaded=!1,this._options=t.extend({type:"raster"},i),t.extend(this,t.pick(i,["url","scheme","tileSize"]));}load(){return t.__awaiter(this,arguments,void 0,(function*(e=!1){this._loaded=!1,this.fire(new t.Event("dataloading",{dataType:"source"})),this._tileJSONRequest=new AbortController;try{const i=yield Z(this._options,this.map._requestManager,this._tileJSONRequest);this._tileJSONRequest=null,this._loaded=!0,i&&(t.extend(this,i),i.bounds&&(this.tileBounds=new q(i.bounds,this.minzoom,this.maxzoom)),this.fire(new t.Event("data",{dataType:"source",sourceDataType:"metadata"})),this.fire(new t.Event("data",{dataType:"source",sourceDataType:"content",sourceDataChanged:e})));}catch(e){this._tileJSONRequest=null,this.fire(new t.ErrorEvent(e));}}))}loaded(){return this._loaded}onAdd(e){this.map=e,this.load();}onRemove(){this._tileJSONRequest&&(this._tileJSONRequest.abort(),this._tileJSONRequest=null);}setSourceProperty(e){this._tileJSONRequest&&(this._tileJSONRequest.abort(),this._tileJSONRequest=null),e(),this.load(!0);}setTiles(e){return this.setSourceProperty((()=>{this._options.tiles=e;})),this}setUrl(e){return this.setSourceProperty((()=>{this.url=e,this._options.url=e;})),this}serialize(){return t.extend({},this._options)}hasTile(e){return !this.tileBounds||this.tileBounds.contains(e.canonical)}loadTile(e){return t.__awaiter(this,void 0,void 0,(function*(){const t=e.tileID.canonical.url(this.tiles,this.map.getPixelRatio(),this.scheme);e.abortController=new AbortController;try{const i=yield _.getImage(this.map._requestManager.transformRequest(t,"Tile"),e.abortController,this.map._refreshExpiredTiles);if(delete e.abortController,e.aborted)return void(e.state="unloaded");if(i&&i.data){this.map._refreshExpiredTiles&&i.cacheControl&&i.expires&&e.setExpiryData({cacheControl:i.cacheControl,expires:i.expires});const t=this.map.painter.context,r=t.gl,o=i.data;e.texture=this.map.painter.getTileTexture(o.width),e.texture?e.texture.update(o,{useMipmap:!0}):(e.texture=new y(t,o,r.RGBA,{useMipmap:!0}),e.texture.bind(r.LINEAR,r.CLAMP_TO_EDGE,r.LINEAR_MIPMAP_NEAREST)),e.state="loaded";}}catch(t){if(delete e.abortController,e.aborted)e.state="unloaded";else if(t)throw e.state="errored",t}}))}abortTile(e){return t.__awaiter(this,void 0,void 0,(function*(){e.abortController&&(e.abortController.abort(),delete e.abortController);}))}unloadTile(e){return t.__awaiter(this,void 0,void 0,(function*(){e.texture&&this.map.painter.saveTileTexture(e.texture);}))}hasTransition(){return !1}}class $ extends X{constructor(e,i,r,o){super(e,i,r,o),this.type="raster-dem",this.maxzoom=22,this._options=t.extend({type:"raster-dem"},i),this.encoding=i.encoding||"mapbox",this.redFactor=i.redFactor,this.greenFactor=i.greenFactor,this.blueFactor=i.blueFactor,this.baseShift=i.baseShift;}loadTile(e){return t.__awaiter(this,void 0,void 0,(function*(){const i=e.tileID.canonical.url(this.tiles,this.map.getPixelRatio(),this.scheme),r=this.map._requestManager.transformRequest(i,"Tile");e.neighboringTiles=this._getNeighboringTiles(e.tileID),e.abortController=new AbortController;try{const i=yield _.getImage(r,e.abortController,this.map._refreshExpiredTiles);if(delete e.abortController,e.aborted)return void(e.state="unloaded");if(i&&i.data){const r=i.data;this.map._refreshExpiredTiles&&i.cacheControl&&i.expires&&e.setExpiryData({cacheControl:i.cacheControl,expires:i.expires});const o=t.isImageBitmap(r)&&t.offscreenCanvasSupported()?r:yield this.readImageNow(r),a={type:this.type,uid:e.uid,source:this.id,rawImageData:o,encoding:this.encoding,redFactor:this.redFactor,greenFactor:this.greenFactor,blueFactor:this.blueFactor,baseShift:this.baseShift};if(!e.actor||"expired"===e.state){e.actor=this.dispatcher.getActor();const t=yield e.actor.sendAsync({type:"LDT",data:a});e.dem=t,e.needsHillshadePrepare=!0,e.needsTerrainPrepare=!0,e.state="loaded";}}}catch(t){if(delete e.abortController,e.aborted)e.state="unloaded";else if(t)throw e.state="errored",t}}))}readImageNow(e){return t.__awaiter(this,void 0,void 0,(function*(){if("undefined"!=typeof VideoFrame&&t.isOffscreenCanvasDistorted()){const i=e.width+2,r=e.height+2;try{return new t.RGBAImage({width:i,height:r},yield t.readImageUsingVideoFrame(e,-1,-1,i,r))}catch(e){}}return f.getImageData(e,1)}))}_getNeighboringTiles(e){const i=e.canonical,r=Math.pow(2,i.z),o=(i.x-1+r)%r,a=0===i.x?e.wrap-1:e.wrap,s=(i.x+1+r)%r,n=i.x+1===r?e.wrap+1:e.wrap,l={};return l[new t.OverscaledTileID(e.overscaledZ,a,i.z,o,i.y).key]={backfilled:!1},l[new t.OverscaledTileID(e.overscaledZ,n,i.z,s,i.y).key]={backfilled:!1},i.y>0&&(l[new t.OverscaledTileID(e.overscaledZ,a,i.z,o,i.y-1).key]={backfilled:!1},l[new t.OverscaledTileID(e.overscaledZ,e.wrap,i.z,i.x,i.y-1).key]={backfilled:!1},l[new t.OverscaledTileID(e.overscaledZ,n,i.z,s,i.y-1).key]={backfilled:!1}),i.y+10&&t.extend(o,{resourceTiming:r}),this.fire(new t.Event("data",Object.assign(Object.assign({},o),{sourceDataType:"metadata"}))),this.fire(new t.Event("data",Object.assign(Object.assign({},o),{sourceDataType:"content"})));}catch(e){if(this._pendingLoads--,this._removed)return void this.fire(new t.Event("dataabort",{dataType:"source"}));this.fire(new t.ErrorEvent(e));}}))}loaded(){return 0===this._pendingLoads}loadTile(e){return t.__awaiter(this,void 0,void 0,(function*(){const t=e.actor?"RT":"LT";e.actor=this.actor;const i={type:this.type,uid:e.uid,tileID:e.tileID,zoom:e.tileID.overscaledZ,maxZoom:this.maxzoom,tileSize:this.tileSize,source:this.id,pixelRatio:this.map.getPixelRatio(),showCollisionBoxes:this.map.showCollisionBoxes,promoteId:this.promoteId,subdivisionGranularity:this.map.style.projection.subdivisionGranularity};e.abortController=new AbortController;const r=yield this.actor.sendAsync({type:t,data:i},e.abortController);delete e.abortController,e.unloadVectorData(),e.aborted||e.loadVectorData(r,this.map.painter,"RT"===t);}))}abortTile(e){return t.__awaiter(this,void 0,void 0,(function*(){e.abortController&&(e.abortController.abort(),delete e.abortController),e.aborted=!0;}))}unloadTile(e){return t.__awaiter(this,void 0,void 0,(function*(){e.unloadVectorData(),yield this.actor.sendAsync({type:"RMT",data:{uid:e.uid,type:this.type,source:this.id}});}))}onRemove(){this._removed=!0,this.actor.sendAsync({type:"RS",data:{type:this.type,source:this.id}});}serialize(){return t.extend({},this._options,{type:this.type,data:this._data})}hasTransition(){return !1}}class K extends t.Evented{constructor(e,t,i,r){super(),this.flippedWindingOrder=!1,this.id=e,this.dispatcher=i,this.coordinates=t.coordinates,this.type="image",this.minzoom=0,this.maxzoom=22,this.tileSize=512,this.tiles={},this._loaded=!1,this.setEventedParent(r),this.options=t;}load(e){return t.__awaiter(this,void 0,void 0,(function*(){this._loaded=!1,this.fire(new t.Event("dataloading",{dataType:"source"})),this.url=this.options.url,this._request=new AbortController;try{const t=yield _.getImage(this.map._requestManager.transformRequest(this.url,"Image"),this._request);this._request=null,this._loaded=!0,t&&t.data&&(this.image=t.data,e&&(this.coordinates=e),this._finishLoading());}catch(e){this._request=null,this._loaded=!0,this.fire(new t.ErrorEvent(e));}}))}loaded(){return this._loaded}updateImage(e){return e.url?(this._request&&(this._request.abort(),this._request=null),this.options.url=e.url,this.load(e.coordinates).finally((()=>{this.texture=null;})),this):this}_finishLoading(){this.map&&(this.setCoordinates(this.coordinates),this.fire(new t.Event("data",{dataType:"source",sourceDataType:"metadata"})));}onAdd(e){this.map=e,this.load();}onRemove(){this._request&&(this._request.abort(),this._request=null);}setCoordinates(e){this.coordinates=e;const i=e.map(t.MercatorCoordinate.fromLngLat);var r;return this.tileID=function(e){let i=1/0,r=1/0,o=-1/0,a=-1/0;for(const t of e)i=Math.min(i,t.x),r=Math.min(r,t.y),o=Math.max(o,t.x),a=Math.max(a,t.y);const s=Math.max(o-i,a-r),n=Math.max(0,Math.floor(-Math.log(s)/Math.LN2)),l=Math.pow(2,n);return new t.CanonicalTileID(n,Math.floor((i+o)/2*l),Math.floor((r+a)/2*l))}(i),this.minzoom=this.maxzoom=this.tileID.z,this.tileCoords=i.map((e=>this.tileID.getTilePoint(e)._round())),this.flippedWindingOrder=((r=this.tileCoords)[1].x-r[0].x)*(r[2].y-r[0].y)-(r[1].y-r[0].y)*(r[2].x-r[0].x)<0,this.fire(new t.Event("data",{dataType:"source",sourceDataType:"content"})),this}prepare(){if(0===Object.keys(this.tiles).length||!this.image)return;const e=this.map.painter.context,i=e.gl;this.texture||(this.texture=new y(e,this.image,i.RGBA),this.texture.bind(i.LINEAR,i.CLAMP_TO_EDGE));let r=!1;for(const e in this.tiles){const t=this.tiles[e];"loaded"!==t.state&&(t.state="loaded",t.texture=this.texture,r=!0);}r&&this.fire(new t.Event("data",{dataType:"source",sourceDataType:"idle",sourceId:this.id}));}loadTile(e){return t.__awaiter(this,void 0,void 0,(function*(){this.tileID&&this.tileID.equals(e.tileID.canonical)?(this.tiles[String(e.tileID.wrap)]=e,e.buckets={}):e.state="errored";}))}serialize(){return {type:"image",url:this.options.url,coordinates:this.coordinates}}hasTransition(){return !1}}class Y extends K{constructor(e,t,i,r){super(e,t,i,r),this.roundZoom=!0,this.type="video",this.options=t;}load(){return t.__awaiter(this,void 0,void 0,(function*(){this._loaded=!1;const e=this.options;this.urls=[];for(const t of e.urls)this.urls.push(this.map._requestManager.transformRequest(t,"Source").url);try{const e=yield t.getVideo(this.urls);if(this._loaded=!0,!e)return;this.video=e,this.video.loop=!0,this.video.addEventListener("playing",(()=>{this.map.triggerRepaint();})),this.map&&this.video.play(),this._finishLoading();}catch(e){this.fire(new t.ErrorEvent(e));}}))}pause(){this.video&&this.video.pause();}play(){this.video&&this.video.play();}seek(e){if(this.video){const i=this.video.seekable;ei.end(0)?this.fire(new t.ErrorEvent(new t.ValidationError(`sources.${this.id}`,null,`Playback for this video can be set only between the ${i.start(0)} and ${i.end(0)}-second mark.`))):this.video.currentTime=e;}}getVideo(){return this.video}onAdd(e){this.map||(this.map=e,this.load(),this.video&&(this.video.play(),this.setCoordinates(this.coordinates)));}prepare(){if(0===Object.keys(this.tiles).length||this.video.readyState<2)return;const e=this.map.painter.context,i=e.gl;this.texture?this.video.paused||(this.texture.bind(i.LINEAR,i.CLAMP_TO_EDGE),i.texSubImage2D(i.TEXTURE_2D,0,0,0,i.RGBA,i.UNSIGNED_BYTE,this.video)):(this.texture=new y(e,this.video,i.RGBA),this.texture.bind(i.LINEAR,i.CLAMP_TO_EDGE));let r=!1;for(const e in this.tiles){const t=this.tiles[e];"loaded"!==t.state&&(t.state="loaded",t.texture=this.texture,r=!0);}r&&this.fire(new t.Event("data",{dataType:"source",sourceDataType:"idle",sourceId:this.id}));}serialize(){return {type:"video",urls:this.urls,coordinates:this.coordinates}}hasTransition(){return this.video&&!this.video.paused}}class J extends K{constructor(e,i,r,o){super(e,i,r,o),i.coordinates?Array.isArray(i.coordinates)&&4===i.coordinates.length&&!i.coordinates.some((e=>!Array.isArray(e)||2!==e.length||e.some((e=>"number"!=typeof e))))||this.fire(new t.ErrorEvent(new t.ValidationError(`sources.${e}`,null,'"coordinates" property must be an array of 4 longitude/latitude array pairs'))):this.fire(new t.ErrorEvent(new t.ValidationError(`sources.${e}`,null,'missing required property "coordinates"'))),i.animate&&"boolean"!=typeof i.animate&&this.fire(new t.ErrorEvent(new t.ValidationError(`sources.${e}`,null,'optional "animate" property must be a boolean value'))),i.canvas?"string"==typeof i.canvas||i.canvas instanceof HTMLCanvasElement||this.fire(new t.ErrorEvent(new t.ValidationError(`sources.${e}`,null,'"canvas" must be either a string representing the ID of the canvas element from which to read, or an HTMLCanvasElement instance'))):this.fire(new t.ErrorEvent(new t.ValidationError(`sources.${e}`,null,'missing required property "canvas"'))),this.options=i,this.animate=void 0===i.animate||i.animate;}load(){return t.__awaiter(this,void 0,void 0,(function*(){this._loaded=!0,this.canvas||(this.canvas=this.options.canvas instanceof HTMLCanvasElement?this.options.canvas:document.getElementById(this.options.canvas)),this.width=this.canvas.width,this.height=this.canvas.height,this._hasInvalidDimensions()?this.fire(new t.ErrorEvent(new Error("Canvas dimensions cannot be less than or equal to zero."))):(this.play=function(){this._playing=!0,this.map.triggerRepaint();},this.pause=function(){this._playing&&(this.prepare(),this._playing=!1);},this._finishLoading());}))}getCanvas(){return this.canvas}onAdd(e){this.map=e,this.load(),this.canvas&&this.animate&&this.play();}onRemove(){this.pause();}prepare(){let e=!1;if(this.canvas.width!==this.width&&(this.width=this.canvas.width,e=!0),this.canvas.height!==this.height&&(this.height=this.canvas.height,e=!0),this._hasInvalidDimensions())return;if(0===Object.keys(this.tiles).length)return;const i=this.map.painter.context,r=i.gl;this.texture?(e||this._playing)&&this.texture.update(this.canvas,{premultiply:!0}):this.texture=new y(i,this.canvas,r.RGBA,{premultiply:!0});let o=!1;for(const e in this.tiles){const t=this.tiles[e];"loaded"!==t.state&&(t.state="loaded",t.texture=this.texture,o=!0);}o&&this.fire(new t.Event("data",{dataType:"source",sourceDataType:"idle",sourceId:this.id}));}serialize(){return {type:"canvas",coordinates:this.coordinates}}hasTransition(){return this._playing}_hasInvalidDimensions(){for(const e of [this.canvas.width,this.canvas.height])if(isNaN(e)||e<=0)return !0;return !1}}const Q={},ee=e=>{switch(e){case"geojson":return H;case"image":return K;case"raster":return X;case"raster-dem":return $;case"vector":return W;case"video":return Y;case"canvas":return J}return Q[e]},te="RTLPluginLoaded";class ie extends t.Evented{constructor(){super(...arguments),this.status="unavailable",this.url=null,this.dispatcher=U();}_syncState(e){return this.status=e,this.dispatcher.broadcast("SRPS",{pluginStatus:e,pluginURL:this.url}).catch((e=>{throw this.status="error",e}))}getRTLTextPluginStatus(){return this.status}clearRTLTextPlugin(){this.status="unavailable",this.url=null;}setRTLTextPlugin(e){return t.__awaiter(this,arguments,void 0,(function*(e,t=!1){if(this.url)throw new Error("setRTLTextPlugin cannot be called multiple times.");if(this.url=f.resolveURL(e),!this.url)throw new Error(`requested url ${e} is invalid`);if("unavailable"===this.status){if(!t)return this._requestImport();this.status="deferred",this._syncState(this.status);}else if("requested"===this.status)return this._requestImport()}))}_requestImport(){return t.__awaiter(this,void 0,void 0,(function*(){yield this._syncState("loading"),this.status="loaded",this.fire(new t.Event(te));}))}lazyLoad(){"unavailable"===this.status?this.status="requested":"deferred"===this.status&&this._requestImport();}}let re=null;function oe(){return re||(re=new ie),re}class ae{constructor(e,i){this.timeAdded=0,this.fadeEndTime=0,this.tileID=e,this.uid=t.uniqueId(),this.uses=0,this.tileSize=i,this.buckets={},this.expirationTime=null,this.queryPadding=0,this.hasSymbolBuckets=!1,this.hasRTLText=!1,this.dependencies={},this.rtt=[],this.rttCoords={},this.expiredRequestCount=0,this.state="loading";}registerFadeDuration(e){const t=e+this.timeAdded;tt.getLayer(e))).filter(Boolean);if(0!==e.length){r.layers=e,r.stateDependentLayerIds&&(r.stateDependentLayers=r.stateDependentLayerIds.map((t=>e.filter((e=>e.id===t))[0])));for(const t of e)i[t.id]=r;}}return i}(e.buckets,null==i?void 0:i.style),this.hasSymbolBuckets=!1;for(const e in this.buckets){const i=this.buckets[e];if(i instanceof t.SymbolBucket){if(this.hasSymbolBuckets=!0,!r)break;i.justReloaded=!0;}}if(this.hasRTLText=!1,this.hasSymbolBuckets)for(const e in this.buckets){const i=this.buckets[e];if(i instanceof t.SymbolBucket&&i.hasRTLText){this.hasRTLText=!0,oe().lazyLoad();break}}this.queryPadding=0;for(const e in this.buckets){const t=this.buckets[e];this.queryPadding=Math.max(this.queryPadding,i.style.getLayer(e).queryRadius(t));}e.imageAtlas&&(this.imageAtlas=e.imageAtlas),e.glyphAtlasImage&&(this.glyphAtlasImage=e.glyphAtlasImage);}else this.collisionBoxArray=new t.CollisionBoxArray;}unloadVectorData(){for(const e in this.buckets)this.buckets[e].destroy();this.buckets={},this.imageAtlasTexture&&this.imageAtlasTexture.destroy(),this.imageAtlas&&(this.imageAtlas=null),this.glyphAtlasTexture&&this.glyphAtlasTexture.destroy(),this.latestFeatureIndex=null,this.state="unloaded";}getBucket(e){return this.buckets[e.id]}upload(e){for(const t in this.buckets){const i=this.buckets[t];i.uploadPending()&&i.upload(e);}const t=e.gl;this.imageAtlas&&!this.imageAtlas.uploaded&&(this.imageAtlasTexture=new y(e,this.imageAtlas.image,t.RGBA),this.imageAtlas.uploaded=!0),this.glyphAtlasImage&&(this.glyphAtlasTexture=new y(e,this.glyphAtlasImage,t.ALPHA),this.glyphAtlasImage=null);}prepare(e){this.imageAtlas&&this.imageAtlas.patchUpdatedImages(e,this.imageAtlasTexture);}queryRenderedFeatures(e,t,i,r,o,a,s,n,l,c){return this.latestFeatureIndex&&this.latestFeatureIndex.rawTileData?this.latestFeatureIndex.query({queryGeometry:r,cameraQueryGeometry:o,scale:a,tileSize:this.tileSize,pixelPosMatrix:c,transform:n,params:s,queryPadding:this.queryPadding*l},e,t,i):{}}querySourceFeatures(e,i){const r=this.latestFeatureIndex;if(!r||!r.rawTileData)return;const o=r.loadVTLayers(),a=i&&i.sourceLayer?i.sourceLayer:"",s=o._geojsonTileLayer||o[a];if(!s)return;const n=t.featureFilter(i&&i.filter),{z:l,x:c,y:h}=this.tileID.canonical,u={z:l,x:c,y:h};for(let i=0;ie)t=!1;else if(i)if(this.expirationTime{this.remove(e,o);}),i)),this.data[r].push(o),this.order.push(r),this.order.length>this.max){const e=this._getAndRemoveByKey(this.order[0]);e&&this.onRemove(e);}return this}has(e){return e.wrapped().key in this.data}getAndRemove(e){return this.has(e)?this._getAndRemoveByKey(e.wrapped().key):null}_getAndRemoveByKey(e){const t=this.data[e].shift();return t.timeout&&clearTimeout(t.timeout),0===this.data[e].length&&delete this.data[e],this.order.splice(this.order.indexOf(e),1),t.value}getByKey(e){const t=this.data[e];return t?t[0].value:null}get(e){return this.has(e)?this.data[e.wrapped().key][0].value:null}remove(e,t){if(!this.has(e))return this;const i=e.wrapped().key,r=void 0===t?0:this.data[i].indexOf(t),o=this.data[i][r];return this.data[i].splice(r,1),o.timeout&&clearTimeout(o.timeout),0===this.data[i].length&&delete this.data[i],this.onRemove(o.value),this.order.splice(this.order.indexOf(i),1),this}setMaxSize(e){for(this.max=e;this.order.length>this.max;){const e=this._getAndRemoveByKey(this.order[0]);e&&this.onRemove(e);}return this}filter(e){const t=[];for(const i in this.data)for(const r of this.data[i])e(r.value)||t.push(r);for(const e of t)this.remove(e.value.tileID,e);}}class ne{constructor(){this.state={},this.stateChanges={},this.deletedStates={};}updateState(e,i,r){const o=String(i);if(this.stateChanges[e]=this.stateChanges[e]||{},this.stateChanges[e][o]=this.stateChanges[e][o]||{},t.extend(this.stateChanges[e][o],r),null===this.deletedStates[e]){this.deletedStates[e]={};for(const t in this.state[e])t!==o&&(this.deletedStates[e][t]=null);}else if(this.deletedStates[e]&&null===this.deletedStates[e][o]){this.deletedStates[e][o]={};for(const t in this.state[e][o])r[t]||(this.deletedStates[e][o][t]=null);}else for(const t in r)this.deletedStates[e]&&this.deletedStates[e][o]&&null===this.deletedStates[e][o][t]&&delete this.deletedStates[e][o][t];}removeFeatureState(e,t,i){if(null===this.deletedStates[e])return;const r=String(t);if(this.deletedStates[e]=this.deletedStates[e]||{},i&&void 0!==t)null!==this.deletedStates[e][r]&&(this.deletedStates[e][r]=this.deletedStates[e][r]||{},this.deletedStates[e][r][i]=null);else if(void 0!==t)if(this.stateChanges[e]&&this.stateChanges[e][r])for(i in this.deletedStates[e][r]={},this.stateChanges[e][r])this.deletedStates[e][r][i]=null;else this.deletedStates[e][r]=null;else this.deletedStates[e]=null;}getState(e,i){const r=String(i),o=t.extend({},(this.state[e]||{})[r],(this.stateChanges[e]||{})[r]);if(null===this.deletedStates[e])return {};if(this.deletedStates[e]){const t=this.deletedStates[e][i];if(null===t)return {};for(const e in t)delete o[e];}return o}initializeTileState(e,t){e.setFeatureState(this.state,t);}coalesceChanges(e,i){const r={};for(const e in this.stateChanges){this.state[e]=this.state[e]||{};const i={};for(const r in this.stateChanges[e])this.state[e][r]||(this.state[e][r]={}),t.extend(this.state[e][r],this.stateChanges[e][r]),i[r]=this.state[e][r];r[e]=i;}for(const e in this.deletedStates){this.state[e]=this.state[e]||{};const i={};if(null===this.deletedStates[e])for(const t in this.state[e])i[t]={},this.state[e][t]={};else for(const t in this.deletedStates[e]){if(null===this.deletedStates[e][t])this.state[e][t]={};else for(const i of Object.keys(this.deletedStates[e][t]))delete this.state[e][t][i];i[t]=this.state[e][t];}r[e]=r[e]||{},t.extend(r[e],i);}if(this.stateChanges={},this.deletedStates={},0!==Object.keys(r).length)for(const t in e)e[t].setFeatureState(r,i);}}class le{constructor(e=0,t=0,i=0,r=0){if(isNaN(e)||e<0||isNaN(t)||t<0||isNaN(i)||i<0||isNaN(r)||r<0)throw new Error("Invalid value for edge-insets, top, bottom, left and right must all be numbers");this.top=e,this.bottom=t,this.left=i,this.right=r;}interpolate(e,i,r){return null!=i.top&&null!=e.top&&(this.top=t.interpolateFactory.number(e.top,i.top,r)),null!=i.bottom&&null!=e.bottom&&(this.bottom=t.interpolateFactory.number(e.bottom,i.bottom,r)),null!=i.left&&null!=e.left&&(this.left=t.interpolateFactory.number(e.left,i.left,r)),null!=i.right&&null!=e.right&&(this.right=t.interpolateFactory.number(e.right,i.right,r)),this}getCenter(e,i){const r=t.clamp((this.left+e-this.right)/2,0,e),o=t.clamp((this.top+i-this.bottom)/2,0,i);return new t.Point(r,o)}equals(e){return this.top===e.top&&this.bottom===e.bottom&&this.left===e.left&&this.right===e.right}clone(){return new le(this.top,this.bottom,this.left,this.right)}toJSON(){return {top:this.top,bottom:this.bottom,left:this.left,right:this.right}}}const ce=85.051129;function he(e,t){if(!e.renderWorldCopies||e.lngRange)return;const i=t.lng-e.center.lng;t.lng+=i>180?-360:i<-180?360:0;}function ue(e){return Math.pow(2,e)}function de(e){return Math.log(e)/Math.LN2}function _e(e){return Math.max(0,Math.floor(e))}class pe{constructor(e,i,r,o,a,s){this._callbacks=e,this._tileSize=512,this._renderWorldCopies=void 0===s||!!s,this._minZoom=i||0,this._maxZoom=r||22,this._minPitch=null==o?0:o,this._maxPitch=null==a?60:a,this.setMaxBounds(),this._width=0,this._height=0,this._center=new t.LngLat(0,0),this._elevation=0,this._zoom=0,this._tileZoom=_e(this._zoom),this._scale=ue(this._zoom),this._bearingInRadians=0,this._fovInRadians=.6435011087932844,this._pitchInRadians=0,this._rollInRadians=0,this._unmodified=!0,this._edgeInsets=new le,this._minElevationForCurrentTile=0;}apply(e,t){this._latRange=e.latRange,this._lngRange=e.lngRange,this._width=e.width,this._height=e.height,this._center=e.center,this._elevation=e.elevation,this._minElevationForCurrentTile=e.minElevationForCurrentTile,this._zoom=e.zoom,this._tileZoom=_e(this._zoom),this._scale=ue(this._zoom),this._bearingInRadians=e.bearingInRadians,this._fovInRadians=e.fovInRadians,this._pitchInRadians=e.pitchInRadians,this._rollInRadians=e.rollInRadians,this._unmodified=e.unmodified,this._edgeInsets=new le(e.padding.top,e.padding.bottom,e.padding.left,e.padding.right),this._minZoom=e.minZoom,this._maxZoom=e.maxZoom,this._minPitch=e.minPitch,this._maxPitch=e.maxPitch,this._renderWorldCopies=e.renderWorldCopies,t&&this._constrain(),this._calcMatrices();}get pixelsToClipSpaceMatrix(){return this._pixelsToClipSpaceMatrix}get clipSpaceToPixelsMatrix(){return this._clipSpaceToPixelsMatrix}get minElevationForCurrentTile(){return this._minElevationForCurrentTile}setMinElevationForCurrentTile(e){this._minElevationForCurrentTile=e;}get tileSize(){return this._tileSize}get tileZoom(){return this._tileZoom}get scale(){return this._scale}get width(){return this._width}get height(){return this._height}get bearingInRadians(){return this._bearingInRadians}get lngRange(){return this._lngRange}get latRange(){return this._latRange}get pixelsToGLUnits(){return this._pixelsToGLUnits}get minZoom(){return this._minZoom}setMinZoom(e){this._minZoom!==e&&(this._minZoom=e,this.setZoom(this.getConstrained(this._center,this.zoom).zoom));}get maxZoom(){return this._maxZoom}setMaxZoom(e){this._maxZoom!==e&&(this._maxZoom=e,this.setZoom(this.getConstrained(this._center,this.zoom).zoom));}get minPitch(){return this._minPitch}setMinPitch(e){this._minPitch!==e&&(this._minPitch=e,this.setPitch(Math.max(this.pitch,e)));}get maxPitch(){return this._maxPitch}setMaxPitch(e){this._maxPitch!==e&&(this._maxPitch=e,this.setPitch(Math.min(this.pitch,e)));}get renderWorldCopies(){return this._renderWorldCopies}setRenderWorldCopies(e){void 0===e?e=!0:null===e&&(e=!1),this._renderWorldCopies=e;}get worldSize(){return this._tileSize*this._scale}get centerOffset(){return this.centerPoint._sub(this.size._div(2))}get size(){return new t.Point(this._width,this._height)}get bearing(){return this._bearingInRadians/Math.PI*180}setBearing(e){const r=t.wrap(e,-180,180)*Math.PI/180;var o,a,s,n,l,c,h,u,d;this._bearingInRadians!==r&&(this._unmodified=!1,this._bearingInRadians=r,this._calcMatrices(),this._rotationMatrix=i(),o=this._rotationMatrix,s=-this._bearingInRadians,n=(a=this._rotationMatrix)[0],l=a[1],c=a[2],h=a[3],u=Math.sin(s),d=Math.cos(s),o[0]=n*d+c*u,o[1]=l*d+h*u,o[2]=n*-u+c*d,o[3]=l*-u+h*d);}get rotationMatrix(){return this._rotationMatrix}get pitchInRadians(){return this._pitchInRadians}get pitch(){return this._pitchInRadians/Math.PI*180}setPitch(e){const i=t.clamp(e,this.minPitch,this.maxPitch)/180*Math.PI;this._pitchInRadians!==i&&(this._unmodified=!1,this._pitchInRadians=i,this._calcMatrices());}get rollInRadians(){return this._rollInRadians}get roll(){return this._rollInRadians/Math.PI*180}setRoll(e){const t=e/180*Math.PI;this._rollInRadians!==t&&(this._unmodified=!1,this._rollInRadians=t,this._calcMatrices());}get fovInRadians(){return this._fovInRadians}get fov(){return t.radiansToDegrees(this._fovInRadians)}setFov(e){e=t.clamp(e,.1,150),this.fov!==e&&(this._unmodified=!1,this._fovInRadians=t.degreesToRadians(e),this._calcMatrices());}get zoom(){return this._zoom}setZoom(e){const t=this.getConstrained(this._center,e).zoom;this._zoom!==t&&(this._unmodified=!1,this._zoom=t,this._tileZoom=Math.max(0,Math.floor(t)),this._scale=ue(t),this._constrain(),this._calcMatrices());}get center(){return this._center}setCenter(e){e.lat===this._center.lat&&e.lng===this._center.lng||(this._unmodified=!1,this._center=e,this._constrain(),this._calcMatrices());}get elevation(){return this._elevation}setElevation(e){e!==this._elevation&&(this._elevation=e,this._constrain(),this._calcMatrices());}get padding(){return this._edgeInsets.toJSON()}setPadding(e){this._edgeInsets.equals(e)||(this._unmodified=!1,this._edgeInsets.interpolate(this._edgeInsets,e,1),this._calcMatrices());}get centerPoint(){return this._edgeInsets.getCenter(this._width,this._height)}get pixelsPerMeter(){return this._pixelPerMeter}get unmodified(){return this._unmodified}isPaddingEqual(e){return this._edgeInsets.equals(e)}interpolatePadding(e,t,i){this._unmodified=!1,this._edgeInsets.interpolate(e,t,i),this._constrain(),this._calcMatrices();}resize(e,t){this._width=e,this._height=t,this._constrain(),this._calcMatrices();}getMaxBounds(){return this._latRange&&2===this._latRange.length&&this._lngRange&&2===this._lngRange.length?new V([this._lngRange[0],this._latRange[0]],[this._lngRange[1],this._latRange[1]]):null}setMaxBounds(e){e?(this._lngRange=[e.getWest(),e.getEast()],this._latRange=[e.getSouth(),e.getNorth()],this._constrain()):(this._lngRange=null,this._latRange=[-85.051129,ce]);}getConstrained(e,t){return this._callbacks.getConstrained(e,t)}getCameraQueryGeometry(e,i){if(1===i.length)return [i[0],e];{let r=e.x,o=e.y,a=e.x,s=e.y;for(const e of i)r=Math.min(r,e.x),o=Math.min(o,e.y),a=Math.max(a,e.x),s=Math.max(s,e.y);return [new t.Point(r,o),new t.Point(a,o),new t.Point(a,s),new t.Point(r,s),new t.Point(r,o)]}}_constrain(){if(!this.center||!this._width||!this._height||this._constraining)return;this._constraining=!0;const e=this._unmodified,{center:t,zoom:i}=this.getConstrained(this.center,this.zoom);this.setCenter(t),this.setZoom(i),this._unmodified=e,this._constraining=!1;}_calcMatrices(){if(this._width&&this._height){this._pixelsToGLUnits=[2/this._width,-2/this._height];let e=t.identity(new Float64Array(16));t.scale(e,e,[this._width/2,-this._height/2,1]),t.translate(e,e,[1,-1,0]),this._clipSpaceToPixelsMatrix=e,e=t.identity(new Float64Array(16)),t.scale(e,e,[1,-1,1]),t.translate(e,e,[-1,-1,0]),t.scale(e,e,[2/this._width,2/this._height,1]),this._pixelsToClipSpaceMatrix=e;}this._callbacks.calcMatrices();}}function me(e,t,i){const r=t.intersectsFrustum(e);if(!i)return r;const o=t.intersectsPlane(i);return 0===r||0===o?0:2===r&&2===o?2:1}function fe(e,i,r,o,a){let s=e;const n=Math.atan(i/r);return s=e+de(o/Math.hypot(i,r)/Math.max(.5,Math.cos(t.degreesToRadians(a/2)))),s+=1*de(Math.cos(n))/2,s+=t.clamp(e-s,-0,0),s}function ge(e,t){const i=(t.roundZoom?Math.round:Math.floor)(e.zoom+de(e.tileSize/t.tileSize));return Math.max(0,i)}function ve(e,i){const r=e.getCameraFrustum(),o=e.getClippingPlane(),a=e.screenPointToMercatorCoordinate(e.getCameraPoint()),s=t.MercatorCoordinate.fromLngLat(e.center,e.elevation);a.z=s.z+Math.cos(e.pitchInRadians)*e.cameraToCenterDistance/e.worldSize;const n=e.getCoveringTilesDetailsProvider(),l=n.allowVariableZoom(e,i),c=ge(e,i),h=i.minzoom||0,u=void 0!==i.maxzoom?i.maxzoom:e.maxZoom,d=Math.min(Math.max(0,c),u),_=Math.pow(2,d),p=[_*a.x,_*a.y,0],m=[_*s.x,_*s.y,0],f=Math.hypot(s.x-a.x,s.y-a.y),g=Math.abs(s.z-a.z),v=Math.hypot(f,g),y=e=>({zoom:0,x:0,y:0,wrap:e,fullyVisible:!1}),x=[],b=[];if(e.renderWorldCopies&&n.allowWorldCopies())for(let e=1;e<=3;e++)x.push(y(-e)),x.push(y(e));for(x.push(y(0));x.length>0;){const _=x.pop(),f=_.x,y=_.y;let w=_.fullyVisible;const T={x:f,y:y,z:_.zoom},E=n.getTileAABB(T,_.wrap,e.elevation,i);if(!w){const e=me(r,E,o);if(0===e)continue;w=2===e;}const P=n.distanceToTile2d(a.x,a.y,T,E);let I=c;l&&(I=(i.calculateTileZoom||fe)(e.zoom+de(e.tileSize/i.tileSize),P,g,v,e.fov)),I=(i.roundZoom?Math.round:Math.floor)(I),I=Math.max(0,I);const C=Math.min(I,u);if(_.wrap=n.getWrap(s,T,_.wrap),_.zoom>=C){if(_.zoom>1),wrap:_.wrap,fullyVisible:w});}return b.sort(((e,t)=>e.distanceSq-t.distanceSq)).map((e=>e.tileID))}class ye extends t.Evented{constructor(e,t,i){super(),this.id=e,this.dispatcher=i,this.on("data",(e=>this._dataHandler(e))),this.on("dataloading",(()=>{this._sourceErrored=!1;})),this.on("error",(()=>{this._sourceErrored=this._source.loaded();})),this._source=((e,t,i,r)=>{const o=new(ee(t.type))(e,t,i,r);if(o.id!==e)throw new Error(`Expected Source id to be ${e} instead of ${o.id}`);return o})(e,t,i,this),this._tiles={},this._cache=new se(0,(e=>this._unloadTile(e))),this._timers={},this._cacheTimers={},this._maxTileCacheSize=null,this._maxTileCacheZoomLevels=null,this._loadedParentTiles={},this._coveredTiles={},this._state=new ne,this._didEmitContent=!1,this._updated=!1;}onAdd(e){this.map=e,this._maxTileCacheSize=e?e._maxTileCacheSize:null,this._maxTileCacheZoomLevels=e?e._maxTileCacheZoomLevels:null,this._source&&this._source.onAdd&&this._source.onAdd(e);}onRemove(e){this.clearTiles(),this._source&&this._source.onRemove&&this._source.onRemove(e);}loaded(){if(this._sourceErrored)return !0;if(!this._sourceLoaded)return !1;if(!this._source.loaded())return !1;if(!(void 0===this.used&&void 0===this.usedForTerrain||this.used||this.usedForTerrain))return !0;if(!this._updated)return !1;for(const e in this._tiles){const t=this._tiles[e];if("loaded"!==t.state&&"errored"!==t.state)return !1}return !0}getSource(){return this._source}pause(){this._paused=!0;}resume(){if(!this._paused)return;const e=this._shouldReloadOnResume;this._paused=!1,this._shouldReloadOnResume=!1,e&&this.reload(),this.transform&&this.update(this.transform,this.terrain);}_loadTile(e,i,r){return t.__awaiter(this,void 0,void 0,(function*(){try{yield this._source.loadTile(e),this._tileLoaded(e,i,r);}catch(i){e.state="errored",404!==i.status?this._source.fire(new t.ErrorEvent(i,{tile:e})):this.update(this.transform,this.terrain);}}))}_unloadTile(e){this._source.unloadTile&&this._source.unloadTile(e);}_abortTile(e){this._source.abortTile&&this._source.abortTile(e),this._source.fire(new t.Event("dataabort",{tile:e,coord:e.tileID,dataType:"source"}));}serialize(){return this._source.serialize()}prepare(e){this._source.prepare&&this._source.prepare(),this._state.coalesceChanges(this._tiles,this.map?this.map.painter:null);for(const t in this._tiles){const i=this._tiles[t];i.upload(e),i.prepare(this.map.style.imageManager);}}getIds(){return Object.values(this._tiles).map((e=>e.tileID)).sort(xe).map((e=>e.key))}getRenderableIds(e){const i=[];for(const t in this._tiles)this._isIdRenderable(t,e)&&i.push(this._tiles[t]);return e?i.sort(((e,i)=>{const r=e.tileID,o=i.tileID,a=new t.Point(r.canonical.x,r.canonical.y)._rotate(-this.transform.bearingInRadians),s=new t.Point(o.canonical.x,o.canonical.y)._rotate(-this.transform.bearingInRadians);return r.overscaledZ-o.overscaledZ||s.y-a.y||s.x-a.x})).map((e=>e.tileID.key)):i.map((e=>e.tileID)).sort(xe).map((e=>e.key))}hasRenderableParent(e){const t=this.findLoadedParent(e,0);return !!t&&this._isIdRenderable(t.tileID.key)}_isIdRenderable(e,t){return this._tiles[e]&&this._tiles[e].hasData()&&!this._coveredTiles[e]&&(t||!this._tiles[e].holdingForFade())}reload(e){if(this._paused)this._shouldReloadOnResume=!0;else {this._cache.reset();for(const t in this._tiles)(e||"errored"!==this._tiles[t].state)&&this._reloadTile(t,"reloading");}}_reloadTile(e,i){return t.__awaiter(this,void 0,void 0,(function*(){const t=this._tiles[e];t&&("loading"!==t.state&&(t.state=i),yield this._loadTile(t,e,i));}))}_tileLoaded(e,i,r){e.timeAdded=f.now(),"expired"===r&&(e.refreshedUponExpiration=!0),this._setTileReloadTimer(i,e),"raster-dem"===this.getSource().type&&e.dem&&this._backfillDEM(e),this._state.initializeTileState(e,this.map?this.map.painter:null),e.aborted||this._source.fire(new t.Event("data",{dataType:"source",tile:e,coord:e.tileID}));}_backfillDEM(e){const t=this.getRenderableIds();for(let r=0;r1||(Math.abs(i)>1&&(1===Math.abs(i+o)?i+=o:1===Math.abs(i-o)&&(i-=o)),t.dem&&e.dem&&(e.dem.backfillBorder(t.dem,i,r),e.neighboringTiles&&e.neighboringTiles[a]&&(e.neighboringTiles[a].backfilled=!0)));}}getTile(e){return this.getTileByID(e.key)}getTileByID(e){return this._tiles[e]}_retainLoadedChildren(e,t,i,r){for(const o in this._tiles){let a=this._tiles[o];if(r[o]||!a.hasData()||a.tileID.overscaledZ<=t||a.tileID.overscaledZ>i)continue;let s=a.tileID;for(;a&&a.tileID.overscaledZ>t+1;){const e=a.tileID.scaledTo(a.tileID.overscaledZ-1);a=this._tiles[e.key],a&&a.hasData()&&(s=e);}let n=s;for(;n.overscaledZ>t;)if(n=n.scaledTo(n.overscaledZ-1),e[n.key]){r[s.key]=s;break}}}findLoadedParent(e,t){if(e.key in this._loadedParentTiles){const i=this._loadedParentTiles[e.key];return i&&i.tileID.overscaledZ>=t?i:null}for(let i=e.overscaledZ-1;i>=t;i--){const t=e.scaledTo(i),r=this._getLoadedTile(t);if(r)return r}}findLoadedSibling(e){return this._getLoadedTile(e)}_getLoadedTile(e){const t=this._tiles[e.key];return t&&t.hasData()?t:this._cache.getByKey(e.wrapped().key)}updateCacheSize(e){const i=Math.ceil(e.width/this._source.tileSize)+1,r=Math.ceil(e.height/this._source.tileSize)+1,o=Math.floor(i*r*(null===this._maxTileCacheZoomLevels?t.config.MAX_TILE_CACHE_ZOOM_LEVELS:this._maxTileCacheZoomLevels)),a="number"==typeof this._maxTileCacheSize?Math.min(this._maxTileCacheSize,o):o;this._cache.setMaxSize(a);}handleWrapJump(e){const t=Math.round((e-(void 0===this._prevLng?e:this._prevLng))/360);if(this._prevLng=e,t){const e={};for(const i in this._tiles){const r=this._tiles[i];r.tileID=r.tileID.unwrapTo(r.tileID.wrap+t),e[r.tileID.key]=r;}this._tiles=e;for(const e in this._timers)clearTimeout(this._timers[e]),delete this._timers[e];for(const e in this._tiles)this._setTileReloadTimer(e,this._tiles[e]);}}_updateCoveredAndRetainedTiles(e,t,i,r,o,a){const s={},n={},l=Object.keys(e),c=f.now();for(const i of l){const r=e[i],o=this._tiles[i];if(!o||0!==o.fadeEndTime&&o.fadeEndTime<=c)continue;const a=this.findLoadedParent(r,t),l=this.findLoadedSibling(r),h=a||l||null;h&&(this._addTile(h.tileID),s[h.tileID.key]=h.tileID),n[i]=r;}this._retainLoadedChildren(n,r,i,e);for(const t in s)e[t]||(this._coveredTiles[t]=!0,e[t]=s[t]);if(a){const t={},i={};for(const e of o)this._tiles[e.key].hasData()?t[e.key]=e:i[e.key]=e;for(const r in i){const o=i[r].children(this._source.maxzoom);this._tiles[o[0].key]&&this._tiles[o[1].key]&&this._tiles[o[2].key]&&this._tiles[o[3].key]&&(t[o[0].key]=e[o[0].key]=o[0],t[o[1].key]=e[o[1].key]=o[1],t[o[2].key]=e[o[2].key]=o[2],t[o[3].key]=e[o[3].key]=o[3],delete i[r]);}for(const r in i){const o=i[r],a=this.findLoadedParent(o,this._source.minzoom),s=this.findLoadedSibling(o),n=a||s||null;if(n){t[n.tileID.key]=e[n.tileID.key]=n.tileID;for(const e in t)t[e].isChildOf(n.tileID)&&delete t[e];}}for(const e in this._tiles)t[e]||(this._coveredTiles[e]=!0);}}update(e,i){if(!this._sourceLoaded||this._paused)return;let r;this.transform=e,this.terrain=i,this.updateCacheSize(e),this.handleWrapJump(this.transform.center.lng),this._coveredTiles={},this.used||this.usedForTerrain?this._source.tileID?r=e.getVisibleUnwrappedCoordinates(this._source.tileID).map((e=>new t.OverscaledTileID(e.canonical.z,e.wrap,e.canonical.z,e.canonical.x,e.canonical.y))):(r=ve(e,{tileSize:this.usedForTerrain?this.tileSize:this._source.tileSize,minzoom:this._source.minzoom,maxzoom:this._source.maxzoom,roundZoom:!this.usedForTerrain&&this._source.roundZoom,reparseOverscaled:this._source.reparseOverscaled,terrain:i,calculateTileZoom:this._source.calculateTileZoom}),this._source.hasTile&&(r=r.filter((e=>this._source.hasTile(e))))):r=[];const o=ge(e,this._source),a=Math.max(o-ye.maxOverzooming,this._source.minzoom),s=Math.max(o+ye.maxUnderzooming,this._source.minzoom);if(this.usedForTerrain){const e={};for(const t of r)if(t.canonical.z>this._source.minzoom){const i=t.scaledTo(t.canonical.z-1);e[i.key]=i;const r=t.scaledTo(Math.max(this._source.minzoom,Math.min(t.canonical.z,5)));e[r.key]=r;}r=r.concat(Object.values(e));}const n=0===r.length&&!this._updated&&this._didEmitContent;this._updated=!0,n&&this.fire(new t.Event("data",{sourceDataType:"idle",dataType:"source",sourceId:this.id}));const l=this._updateRetainedTiles(r,o);be(this._source.type)&&this._updateCoveredAndRetainedTiles(l,a,s,o,r,i);for(const e in l)this._tiles[e].clearFadeHold();const c=t.keysDifference(this._tiles,l);for(const e of c){const t=this._tiles[e];t.hasSymbolBuckets&&!t.holdingForFade()?t.setHoldDuration(this.map._fadeDuration):t.hasSymbolBuckets&&!t.symbolFadeFinished()||this._removeTile(e);}this._updateLoadedParentTileCache(),this._updateLoadedSiblingTileCache();}releaseSymbolFadeTiles(){for(const e in this._tiles)this._tiles[e].holdingForFade()&&this._removeTile(e);}_updateRetainedTiles(e,t){var i;const r={},o={},a=Math.max(t-ye.maxOverzooming,this._source.minzoom),s=Math.max(t+ye.maxUnderzooming,this._source.minzoom),n={};for(const i of e){const e=this._addTile(i);r[i.key]=i,e.hasData()||tthis._source.maxzoom){const e=s.children(this._source.maxzoom)[0],t=this.getTile(e);if(t&&t.hasData()){r[e.key]=e;continue}}else {const e=s.children(this._source.maxzoom);if(r[e[0].key]&&r[e[1].key]&&r[e[2].key]&&r[e[3].key])continue}let n=e.wasRequested();for(let t=s.overscaledZ-1;t>=a;--t){const a=s.scaledTo(t);if(o[a.key])break;if(o[a.key]=!0,e=this.getTile(a),!e&&n&&(e=this._addTile(a)),e){const t=e.hasData();if((t||!(null===(i=this.map)||void 0===i?void 0:i.cancelPendingTileRequestsWhileZooming)||n)&&(r[a.key]=a),n=e.wasRequested(),t)break}}}return r}_updateLoadedParentTileCache(){this._loadedParentTiles={};for(const e in this._tiles){const t=[];let i,r=this._tiles[e].tileID;for(;r.overscaledZ>0;){if(r.key in this._loadedParentTiles){i=this._loadedParentTiles[r.key];break}t.push(r.key);const e=r.scaledTo(r.overscaledZ-1);if(i=this._getLoadedTile(e),i)break;r=e;}for(const e of t)this._loadedParentTiles[e]=i;}}_updateLoadedSiblingTileCache(){this._loadedSiblingTiles={};for(const e in this._tiles){const t=this._tiles[e].tileID,i=this._getLoadedTile(t);this._loadedSiblingTiles[t.key]=i;}}_addTile(e){let i=this._tiles[e.key];if(i)return i;i=this._cache.getAndRemove(e),i&&(this._setTileReloadTimer(e.key,i),i.tileID=e,this._state.initializeTileState(i,this.map?this.map.painter:null),this._cacheTimers[e.key]&&(clearTimeout(this._cacheTimers[e.key]),delete this._cacheTimers[e.key],this._setTileReloadTimer(e.key,i)));const r=i;return i||(i=new ae(e,this._source.tileSize*e.overscaleFactor()),this._loadTile(i,e.key,i.state)),i.uses++,this._tiles[e.key]=i,r||this._source.fire(new t.Event("dataloading",{tile:i,coord:i.tileID,dataType:"source"})),i}_setTileReloadTimer(e,t){e in this._timers&&(clearTimeout(this._timers[e]),delete this._timers[e]);const i=t.getExpiryTimeout();i&&(this._timers[e]=setTimeout((()=>{this._reloadTile(e,"expired"),delete this._timers[e];}),i));}_removeTile(e){const t=this._tiles[e];t&&(t.uses--,delete this._tiles[e],this._timers[e]&&(clearTimeout(this._timers[e]),delete this._timers[e]),t.uses>0||(t.hasData()&&"reloading"!==t.state?this._cache.add(t.tileID,t,t.getExpiryTimeout()):(t.aborted=!0,this._abortTile(t),this._unloadTile(t))));}_dataHandler(e){const t=e.sourceDataType;"source"===e.dataType&&"metadata"===t&&(this._sourceLoaded=!0),this._sourceLoaded&&!this._paused&&"source"===e.dataType&&"content"===t&&(this.reload(e.sourceDataChanged),this.transform&&this.update(this.transform,this.terrain),this._didEmitContent=!0);}clearTiles(){this._shouldReloadOnResume=!1,this._paused=!1;for(const e in this._tiles)this._removeTile(e);this._cache.reset();}tilesIn(e,i,r){const o=[],a=this.transform;if(!a)return o;const s=r?a.getCameraQueryGeometry(e):e,n=e.map((e=>a.screenPointToMercatorCoordinate(e,this.terrain))),l=s.map((e=>a.screenPointToMercatorCoordinate(e,this.terrain))),c=this.getIds();let h=1/0,u=1/0,d=-1/0,_=-1/0;for(const e of l)h=Math.min(h,e.x),u=Math.min(u,e.y),d=Math.max(d,e.x),_=Math.max(_,e.y);for(let e=0;e=0&&f[1].y+m>=0){const e=n.map((e=>s.getTilePoint(e))),t=l.map((e=>s.getTilePoint(e)));o.push({tile:r,tileID:s,queryGeometry:e,cameraQueryGeometry:t,scale:p});}}return o}getVisibleCoordinates(e){const t=this.getRenderableIds(e).map((e=>this._tiles[e].tileID));return this.transform&&this.transform.precacheTiles(t),t}hasTransition(){if(this._source.hasTransition())return !0;if(be(this._source.type)){const e=f.now();for(const t in this._tiles)if(this._tiles[t].fadeEndTime>=e)return !0}return !1}setFeatureState(e,t,i){this._state.updateState(e=e||"_geojsonTileLayer",t,i);}removeFeatureState(e,t,i){this._state.removeFeatureState(e=e||"_geojsonTileLayer",t,i);}getFeatureState(e,t){return this._state.getState(e=e||"_geojsonTileLayer",t)}setDependencies(e,t,i){const r=this._tiles[e];r&&r.setDependencies(t,i);}reloadTilesForDependencies(e,t){for(const i in this._tiles)this._tiles[i].hasDependency(e,t)&&this._reloadTile(i,"reloading");this._cache.filter((i=>!i.hasDependency(e,t)));}}function xe(e,t){const i=Math.abs(2*e.wrap)-+(e.wrap<0),r=Math.abs(2*t.wrap)-+(t.wrap<0);return e.overscaledZ-t.overscaledZ||r-i||t.canonical.y-e.canonical.y||t.canonical.x-e.canonical.x}function be(e){return "raster"===e||"image"===e||"video"===e}ye.maxOverzooming=10,ye.maxUnderzooming=3;class we{constructor(e,t){this.reset(e,t);}reset(e,t){this.points=e||[],this._distances=[0];for(let e=1;e0?(o-s)/n:0;return this.points[a].mult(1-l).add(this.points[i].mult(l))}}function Te(e,t){let i=!0;return "always"===e||"never"!==e&&"never"!==t||(i=!1),i}class Ee{constructor(e,t,i){const r=this.boxCells=[],o=this.circleCells=[];this.xCellCount=Math.ceil(e/i),this.yCellCount=Math.ceil(t/i);for(let e=0;ethis.width||r<0||t>this.height)return [];const n=[];if(e<=0&&t<=0&&this.width<=i&&this.height<=r){if(o)return [{key:null,x1:e,y1:t,x2:i,y2:r}];for(let e=0;e0}hitTestCircle(e,t,i,r,o){const a=e-i,s=e+i,n=t-i,l=t+i;if(s<0||a>this.width||l<0||n>this.height)return !1;const c=[];return this._forEachCell(a,n,s,l,this._queryCellCircle,c,{hitTest:!0,overlapMode:r,circle:{x:e,y:t,radius:i},seenUids:{box:{},circle:{}}},o),c.length>0}_queryCell(e,t,i,r,o,a,s,n){const{seenUids:l,hitTest:c,overlapMode:h}=s,u=this.boxCells[o];if(null!==u){const o=this.bboxes;for(const s of u)if(!l.box[s]){l.box[s]=!0;const u=4*s,d=this.boxKeys[s];if(e<=o[u+2]&&t<=o[u+3]&&i>=o[u+0]&&r>=o[u+1]&&(!n||n(d))&&(!c||!Te(h,d.overlapMode))&&(a.push({key:d,x1:o[u],y1:o[u+1],x2:o[u+2],y2:o[u+3]}),c))return !0}}const d=this.circleCells[o];if(null!==d){const o=this.circles;for(const s of d)if(!l.circle[s]){l.circle[s]=!0;const u=3*s,d=this.circleKeys[s];if(this._circleAndRectCollide(o[u],o[u+1],o[u+2],e,t,i,r)&&(!n||n(d))&&(!c||!Te(h,d.overlapMode))){const e=o[u],t=o[u+1],i=o[u+2];if(a.push({key:d,x1:e-i,y1:t-i,x2:e+i,y2:t+i}),c)return !0}}}return !1}_queryCellCircle(e,t,i,r,o,a,s,n){const{circle:l,seenUids:c,overlapMode:h}=s,u=this.boxCells[o];if(null!==u){const e=this.bboxes;for(const t of u)if(!c.box[t]){c.box[t]=!0;const i=4*t,r=this.boxKeys[t];if(this._circleAndRectCollide(l.x,l.y,l.radius,e[i+0],e[i+1],e[i+2],e[i+3])&&(!n||n(r))&&!Te(h,r.overlapMode))return a.push(!0),!0}}const d=this.circleCells[o];if(null!==d){const e=this.circles;for(const t of d)if(!c.circle[t]){c.circle[t]=!0;const i=3*t,r=this.circleKeys[t];if(this._circlesCollide(e[i],e[i+1],e[i+2],l.x,l.y,l.radius)&&(!n||n(r))&&!Te(h,r.overlapMode))return a.push(!0),!0}}}_forEachCell(e,t,i,r,o,a,s,n){const l=this._convertToXCellCoord(e),c=this._convertToYCellCoord(t),h=this._convertToXCellCoord(i),u=this._convertToYCellCoord(r);for(let d=l;d<=h;d++)for(let l=c;l<=u;l++)if(o.call(this,e,t,i,r,this.xCellCount*l+d,a,s,n))return}_convertToXCellCoord(e){return Math.max(0,Math.min(this.xCellCount-1,Math.floor(e*this.xScale)))}_convertToYCellCoord(e){return Math.max(0,Math.min(this.yCellCount-1,Math.floor(e*this.yScale)))}_circlesCollide(e,t,i,r,o,a){const s=r-e,n=o-t,l=i+a;return l*l>s*s+n*n}_circleAndRectCollide(e,t,i,r,o,a,s){const n=(a-r)/2,l=Math.abs(e-(r+n));if(l>n+i)return !1;const c=(s-o)/2,h=Math.abs(t-(o+c));if(h>c+i)return !1;if(l<=n||h<=c)return !0;const u=l-n,d=h-c;return u*u+d*d<=i*i}}function Pe(e,r,o){const a=t.create();if(!e){const{vecSouth:e,vecEast:t}=Ce(r),o=i();o[0]=t[0],o[1]=t[1],o[2]=e[0],o[3]=e[1],s=o,(d=(l=(n=o)[0])*(u=n[3])-(h=n[2])*(c=n[1]))&&(s[0]=u*(d=1/d),s[1]=-c*d,s[2]=-h*d,s[3]=l*d),a[0]=o[0],a[1]=o[1],a[4]=o[2],a[5]=o[3];}var s,n,l,c,h,u,d;return t.scale(a,a,[1/o,1/o,1]),a}function Ie(e,i,r,o){if(e){const e=t.create();if(!i){const{vecSouth:t,vecEast:i}=Ce(r);e[0]=i[0],e[1]=i[1],e[4]=t[0],e[5]=t[1];}return t.scale(e,e,[o,o,1]),e}return r.pixelsToClipSpaceMatrix}function Ce(e){const i=Math.cos(e.rollInRadians),r=Math.sin(e.rollInRadians),o=Math.cos(e.pitchInRadians),a=Math.cos(e.bearingInRadians),s=Math.sin(e.bearingInRadians),n=t.create$1();n[0]=-a*o*r-s*i,n[1]=-s*o*r+a*i;const 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t.transformMat4(a,a,o),r.transform.projectTileCoordinates(a[0]/a[3],a[1]/a[3],r.unwrappedTileID,r.getElevation).point}return {x:e/r.width*2-1,y:i/r.height*2-1}}function Ue(e,t,i){return i.transform.projectTileCoordinates(e,t,i.unwrappedTileID,i.getElevation)}function je(e,t,i){return e._unit()._perp()._mult(t*i)}function Ne(e,i,r,o,a,s,n,l,c){if(l.projectionCache.offsets[e])return l.projectionCache.offsets[e];const h=r.add(i);if(e+c.direction=a)return l.projectionCache.offsets[e]=h,h;const u=Fe(e+c.direction,l,c),d=je(u.sub(r),n,c.direction),_=r.add(d),p=u.add(d);return l.projectionCache.offsets[e]=t.findLineIntersection(s,h,_,p)||h,l.projectionCache.offsets[e]}function Ge(e,t,i,r,o,a,s,n,l){const c=r?e-t:e+t;let h=c>0?1:-1,u=0;r&&(h*=-1,u=Math.PI),h<0&&(u+=Math.PI);let d,_=h>0?a+o:a+o+1;n.projectionCache.cachedAnchorPoint?d=n.projectionCache.cachedAnchorPoint:(d=Be(n.tileAnchorPoint.x,n.tileAnchorPoint.y,n).point,n.projectionCache.cachedAnchorPoint=d);let p,m,f=d,g=d,v=0,y=0;const x=Math.abs(c),b=[];let w;for(;v+y<=x;){if(_+=h,_=s)return null;v+=y,g=f,m=p;const e={absOffsetX:x,direction:h,distanceFromAnchor:v,previousVertex:g};if(f=Fe(_,n,e),0===i)b.push(g),w=f.sub(g);else {let t;const r=f.sub(g);t=0===r.mag()?je(Fe(_+h,n,e).sub(f),i,h):je(r,i,h),m||(m=g.add(t)),p=Ne(_,t,f,a,s,m,i,n,e),b.push(m),w=p.sub(m);}y=w.mag();}const T=w._mult((x-v)/y)._add(m||g),E=u+Math.atan2(f.y-g.y,f.x-g.x);return b.push(T),{point:T,angle:l?E:0,path:b}}const Ze=new Float32Array([-1/0,-1/0,0,-1/0,-1/0,0,-1/0,-1/0,0,-1/0,-1/0,0]);function Ve(e,t){for(let i=0;i=1;e--)_.push(s.path[e]);for(let e=1;ee.signedDistanceFromCamera<=0))?[]:e.map((e=>e.point));}let f=[];if(_.length>0){const e=_[0].clone(),i=_[0].clone();for(let t=1;t<_.length;t++)e.x=Math.min(e.x,_[t].x),e.y=Math.min(e.y,_[t].y),i.x=Math.max(i.x,_[t].x),i.y=Math.max(i.y,_[t].y);f=e.x>=r.x&&i.x<=o.x&&e.y>=r.y&&i.y<=o.y?[_]:i.xo.x||i.yo.y?[]:t.clipLine([_],r.x,r.y,o.x,o.y);}for(const t of f){a.reset(t,.25*i);let r=0;r=a.length<=.5*i?1:Math.ceil(a.paddedLength/p)+1;for(let t=0;t{const t=Me(e.x,e.y,r,i.getElevation),o=i.transform.projectTileCoordinates(t.point.x,t.point.y,i.unwrappedTileID,i.getElevation);return o.point.x=(.5*o.point.x+.5)*i.width,o.point.y=(.5*-o.point.y+.5)*i.height,o}))}(e,i);return function(e){let t=0,i=0,r=0,o=0;for(let a=0;ai&&(i=o,t=r));return e.slice(t,t+i)}(r)}queryRenderedSymbols(e){if(0===e.length||0===this.grid.keysLength()&&0===this.ignoredGrid.keysLength())return {};const i=[];let r=1/0,o=1/0,a=-1/0,s=-1/0;for(const n of e){const e=new t.Point(n.x+We,n.y+We);r=Math.min(r,e.x),o=Math.min(o,e.y),a=Math.max(a,e.x),s=Math.max(s,e.y),i.push(e);}const n=this.grid.query(r,o,a,s).concat(this.ignoredGrid.query(r,o,a,s)),l={},c={};for(const e of n){const r=e.key;if(void 0===l[r.bucketInstanceId]&&(l[r.bucketInstanceId]={}),l[r.bucketInstanceId][r.featureIndex])continue;const o=[new t.Point(e.x1,e.y1),new t.Point(e.x2,e.y1),new t.Point(e.x2,e.y2),new t.Point(e.x1,e.y2)];t.polygonIntersectsPolygon(i,o)&&(l[r.bucketInstanceId][r.featureIndex]=!0,void 0===c[r.bucketInstanceId]&&(c[r.bucketInstanceId]=[]),c[r.bucketInstanceId].push(r.featureIndex));}return c}insertCollisionBox(e,t,i,r,o,a){(i?this.ignoredGrid:this.grid).insert({bucketInstanceId:r,featureIndex:o,collisionGroupID:a,overlapMode:t},e[0],e[1],e[2],e[3]);}insertCollisionCircles(e,t,i,r,o,a){const s=i?this.ignoredGrid:this.grid,n={bucketInstanceId:r,featureIndex:o,collisionGroupID:a,overlapMode:t};for(let t=0;t=this.screenRightBoundary||rthis.screenBottomBoundary}isInsideGrid(e,t,i,r){return i>=0&&e=0&&tthis.projectAndGetPerspectiveRatio(e.x,e.y,o,c,u)));S=e.some((e=>!e.isOccluded)),M=e.map((e=>new t.Point(e.x,e.y)));}else S=!0;return {box:t.getAABB(M),allPointsOccluded:!S}}}class $e{constructor(e,t,i,r){this.opacity=e?Math.max(0,Math.min(1,e.opacity+(e.placed?t:-t))):r&&i?1:0,this.placed=i;}isHidden(){return 0===this.opacity&&!this.placed}}class He{constructor(e,t,i,r,o){this.text=new $e(e?e.text:null,t,i,o),this.icon=new $e(e?e.icon:null,t,r,o);}isHidden(){return this.text.isHidden()&&this.icon.isHidden()}}class Ke{constructor(e,t,i){this.text=e,this.icon=t,this.skipFade=i;}}class Ye{constructor(e,t,i,r,o){this.bucketInstanceId=e,this.featureIndex=t,this.sourceLayerIndex=i,this.bucketIndex=r,this.tileID=o;}}class Je{constructor(e){this.crossSourceCollisions=e,this.maxGroupID=0,this.collisionGroups={};}get(e){if(this.crossSourceCollisions)return {ID:0,predicate:null};if(!this.collisionGroups[e]){const t=++this.maxGroupID;this.collisionGroups[e]={ID:t,predicate:e=>e.collisionGroupID===t};}return this.collisionGroups[e]}}function Qe(e,i,r,o,a){const{horizontalAlign:s,verticalAlign:n}=t.getAnchorAlignment(e);return new t.Point(-(s-.5)*i+o[0]*a,-(n-.5)*r+o[1]*a)}class et{constructor(e,t,i,r,o){this.transform=e.clone(),this.terrain=t,this.collisionIndex=new Xe(this.transform),this.placements={},this.opacities={},this.variableOffsets={},this.stale=!1,this.commitTime=0,this.fadeDuration=i,this.retainedQueryData={},this.collisionGroups=new Je(r),this.collisionCircleArrays={},this.collisionBoxArrays=new Map,this.prevPlacement=o,o&&(o.prevPlacement=void 0),this.placedOrientations={};}_getTerrainElevationFunc(e){const t=this.terrain;return t?(i,r)=>t.getElevation(e,i,r):null}getBucketParts(e,i,r,o){const a=r.getBucket(i),s=r.latestFeatureIndex;if(!a||!s||i.id!==a.layerIds[0])return;const n=r.collisionBoxArray,l=a.layers[0].layout,c=a.layers[0].paint,h=Math.pow(2,this.transform.zoom-r.tileID.overscaledZ),u=r.tileSize/t.EXTENT,d=r.tileID.toUnwrapped(),_="map"===l.get("text-rotation-alignment"),p=t.pixelsToTileUnits(r,1,this.transform.zoom),m=t.translatePosition(this.collisionIndex.transform,r,c.get("text-translate"),c.get("text-translate-anchor")),f=t.translatePosition(this.collisionIndex.transform,r,c.get("icon-translate"),c.get("icon-translate-anchor")),g=Pe(_,this.transform,p);this.retainedQueryData[a.bucketInstanceId]=new Ye(a.bucketInstanceId,s,a.sourceLayerIndex,a.index,r.tileID);const v={bucket:a,layout:l,translationText:m,translationIcon:f,unwrappedTileID:d,pitchedLabelPlaneMatrix:g,scale:h,textPixelRatio:u,holdingForFade:r.holdingForFade(),collisionBoxArray:n,partiallyEvaluatedTextSize:t.evaluateSizeForZoom(a.textSizeData,this.transform.zoom),collisionGroup:this.collisionGroups.get(a.sourceID)};if(o)for(const t of a.sortKeyRanges){const{sortKey:i,symbolInstanceStart:r,symbolInstanceEnd:o}=t;e.push({sortKey:i,symbolInstanceStart:r,symbolInstanceEnd:o,parameters:v});}else e.push({symbolInstanceStart:0,symbolInstanceEnd:a.symbolInstances.length,parameters:v});}attemptAnchorPlacement(e,i,r,o,a,s,n,l,c,h,u,d,_,p,m,f,g,v,y,x){const b=t.TextAnchorEnum[e.textAnchor],w=[e.textOffset0,e.textOffset1],T=Qe(b,r,o,w,a),E=this.collisionIndex.placeCollisionBox(i,d,l,c,h,n,s,f,u.predicate,y,T,x);if((!v||this.collisionIndex.placeCollisionBox(v,d,l,c,h,n,s,g,u.predicate,y,T,x).placeable)&&E.placeable){let e;if(this.prevPlacement&&this.prevPlacement.variableOffsets[_.crossTileID]&&this.prevPlacement.placements[_.crossTileID]&&this.prevPlacement.placements[_.crossTileID].text&&(e=this.prevPlacement.variableOffsets[_.crossTileID].anchor),0===_.crossTileID)throw new Error("symbolInstance.crossTileID can't be 0");return this.variableOffsets[_.crossTileID]={textOffset:w,width:r,height:o,anchor:b,textBoxScale:a,prevAnchor:e},this.markUsedJustification(p,b,_,m),p.allowVerticalPlacement&&(this.markUsedOrientation(p,m,_),this.placedOrientations[_.crossTileID]=m),{shift:T,placedGlyphBoxes:E}}}placeLayerBucketPart(e,i,r){const{bucket:o,layout:a,translationText:s,translationIcon:n,unwrappedTileID:l,pitchedLabelPlaneMatrix:c,textPixelRatio:h,holdingForFade:u,collisionBoxArray:d,partiallyEvaluatedTextSize:_,collisionGroup:p}=e.parameters,m=a.get("text-optional"),f=a.get("icon-optional"),g=t.getOverlapMode(a,"text-overlap","text-allow-overlap"),v="always"===g,y=t.getOverlapMode(a,"icon-overlap","icon-allow-overlap"),x="always"===y,b="map"===a.get("text-rotation-alignment"),w="map"===a.get("text-pitch-alignment"),T="none"!==a.get("icon-text-fit"),E="viewport-y"===a.get("symbol-z-order"),P=v&&(x||!o.hasIconData()||f),I=x&&(v||!o.hasTextData()||m);!o.collisionArrays&&d&&o.deserializeCollisionBoxes(d);const C=this.retainedQueryData[o.bucketInstanceId].tileID,M=this._getTerrainElevationFunc(C),S=this.transform.getFastPathSimpleProjectionMatrix(C),R=(e,d,x)=>{var E,R;if(i[e.crossTileID])return;if(u)return void(this.placements[e.crossTileID]=new Ke(!1,!1,!1));let D=!1,z=!1,L=!0,A=null,k={box:null,placeable:!1,offscreen:null,occluded:!1},F={box:null,placeable:!1,offscreen:null},B=null,O=null,U=null,j=0,N=0,G=0;d.textFeatureIndex?j=d.textFeatureIndex:e.useRuntimeCollisionCircles&&(j=e.featureIndex),d.verticalTextFeatureIndex&&(N=d.verticalTextFeatureIndex);const Z=d.textBox;if(Z){const i=i=>{let r=t.WritingMode.horizontal;if(o.allowVerticalPlacement&&!i&&this.prevPlacement){const t=this.prevPlacement.placedOrientations[e.crossTileID];t&&(this.placedOrientations[e.crossTileID]=t,r=t,this.markUsedOrientation(o,r,e));}return r},a=(i,r)=>{if(o.allowVerticalPlacement&&e.numVerticalGlyphVertices>0&&d.verticalTextBox){for(const e of o.writingModes)if(e===t.WritingMode.vertical?(k=r(),F=k):k=i(),k&&k.placeable)break}else k=i();},c=e.textAnchorOffsetStartIndex,u=e.textAnchorOffsetEndIndex;if(u===c){const r=(t,i)=>{const r=this.collisionIndex.placeCollisionBox(t,g,h,C,l,w,b,s,p.predicate,M,void 0,S);return r&&r.placeable&&(this.markUsedOrientation(o,i,e),this.placedOrientations[e.crossTileID]=i),r};a((()=>r(Z,t.WritingMode.horizontal)),(()=>{const i=d.verticalTextBox;return o.allowVerticalPlacement&&e.numVerticalGlyphVertices>0&&i?r(i,t.WritingMode.vertical):{box:null,offscreen:null}})),i(k&&k.placeable);}else {let _=t.TextAnchorEnum[null===(R=null===(E=this.prevPlacement)||void 0===E?void 0:E.variableOffsets[e.crossTileID])||void 0===R?void 0:R.anchor];const m=(t,i,a)=>{const d=t.x2-t.x1,m=t.y2-t.y1,f=e.textBoxScale,v=T&&"never"===y?i:null;let x=null,E="never"===g?1:2,P="never";_&&E++;for(let i=0;im(Z,d.iconBox,t.WritingMode.horizontal)),(()=>{const i=d.verticalTextBox;return o.allowVerticalPlacement&&(!k||!k.placeable)&&e.numVerticalGlyphVertices>0&&i?m(i,d.verticalIconBox,t.WritingMode.vertical):{box:null,occluded:!0,offscreen:null}})),k&&(D=k.placeable,L=k.offscreen);const f=i(k&&k.placeable);if(!D&&this.prevPlacement){const t=this.prevPlacement.variableOffsets[e.crossTileID];t&&(this.variableOffsets[e.crossTileID]=t,this.markUsedJustification(o,t.anchor,e,f));}}}if(B=k,D=B&&B.placeable,L=B&&B.offscreen,e.useRuntimeCollisionCircles){const i=o.text.placedSymbolArray.get(e.centerJustifiedTextSymbolIndex),n=t.evaluateSizeForFeature(o.textSizeData,_,i),h=a.get("text-padding");O=this.collisionIndex.placeCollisionCircles(g,i,o.lineVertexArray,o.glyphOffsetArray,n,l,c,r,w,p.predicate,e.collisionCircleDiameter,h,s,M),O.circles.length&&O.collisionDetected&&!r&&t.warnOnce("Collisions detected, but collision boxes are not shown"),D=v||O.circles.length>0&&!O.collisionDetected,L=L&&O.offscreen;}if(d.iconFeatureIndex&&(G=d.iconFeatureIndex),d.iconBox){const e=e=>this.collisionIndex.placeCollisionBox(e,y,h,C,l,w,b,n,p.predicate,M,T&&A?A:void 0,S);F&&F.placeable&&d.verticalIconBox?(U=e(d.verticalIconBox),z=U.placeable):(U=e(d.iconBox),z=U.placeable),L=L&&U.offscreen;}const V=m||0===e.numHorizontalGlyphVertices&&0===e.numVerticalGlyphVertices,q=f||0===e.numIconVertices;V||q?q?V||(z=z&&D):D=z&&D:z=D=z&&D;const W=z&&U.placeable;if(D&&B.placeable&&this.collisionIndex.insertCollisionBox(B.box,g,a.get("text-ignore-placement"),o.bucketInstanceId,F&&F.placeable&&N?N:j,p.ID),W&&this.collisionIndex.insertCollisionBox(U.box,y,a.get("icon-ignore-placement"),o.bucketInstanceId,G,p.ID),O&&D&&this.collisionIndex.insertCollisionCircles(O.circles,g,a.get("text-ignore-placement"),o.bucketInstanceId,j,p.ID),r&&this.storeCollisionData(o.bucketInstanceId,x,d,B,U,O),0===e.crossTileID)throw new Error("symbolInstance.crossTileID can't be 0");if(0===o.bucketInstanceId)throw new Error("bucket.bucketInstanceId can't be 0");this.placements[e.crossTileID]=new Ke((D||P)&&!(null==B?void 0:B.occluded),(z||I)&&!(null==U?void 0:U.occluded),L||o.justReloaded),i[e.crossTileID]=!0;};if(E){if(0!==e.symbolInstanceStart)throw new Error("bucket.bucketInstanceId should be 0");const t=o.getSortedSymbolIndexes(-this.transform.bearingInRadians);for(let e=t.length-1;e>=0;--e){const i=t[e];R(o.symbolInstances.get(i),o.collisionArrays[i],i);}}else for(let t=e.symbolInstanceStart;t=0&&(e.text.placedSymbolArray.get(t).crossTileID=a>=0&&t!==a?0:r.crossTileID);}markUsedOrientation(e,i,r){const o=i===t.WritingMode.horizontal||i===t.WritingMode.horizontalOnly?i:0,a=i===t.WritingMode.vertical?i:0,s=[r.leftJustifiedTextSymbolIndex,r.centerJustifiedTextSymbolIndex,r.rightJustifiedTextSymbolIndex];for(const t of s)e.text.placedSymbolArray.get(t).placedOrientation=o;r.verticalPlacedTextSymbolIndex&&(e.text.placedSymbolArray.get(r.verticalPlacedTextSymbolIndex).placedOrientation=a);}commit(e){this.commitTime=e,this.zoomAtLastRecencyCheck=this.transform.zoom;const t=this.prevPlacement;let i=!1;this.prevZoomAdjustment=t?t.zoomAdjustment(this.transform.zoom):0;const r=t?t.symbolFadeChange(e):1,o=t?t.opacities:{},a=t?t.variableOffsets:{},s=t?t.placedOrientations:{};for(const e in this.placements){const t=this.placements[e],a=o[e];a?(this.opacities[e]=new He(a,r,t.text,t.icon),i=i||t.text!==a.text.placed||t.icon!==a.icon.placed):(this.opacities[e]=new He(null,r,t.text,t.icon,t.skipFade),i=i||t.text||t.icon);}for(const e in o){const t=o[e];if(!this.opacities[e]){const o=new He(t,r,!1,!1);o.isHidden()||(this.opacities[e]=o,i=i||t.text.placed||t.icon.placed);}}for(const e in a)this.variableOffsets[e]||!this.opacities[e]||this.opacities[e].isHidden()||(this.variableOffsets[e]=a[e]);for(const e in s)this.placedOrientations[e]||!this.opacities[e]||this.opacities[e].isHidden()||(this.placedOrientations[e]=s[e]);if(t&&void 0===t.lastPlacementChangeTime)throw new Error("Last placement time for previous placement is not defined");i?this.lastPlacementChangeTime=e:"number"!=typeof this.lastPlacementChangeTime&&(this.lastPlacementChangeTime=t?t.lastPlacementChangeTime:e);}updateLayerOpacities(e,t){const i={};for(const r of t){const t=r.getBucket(e);t&&r.latestFeatureIndex&&e.id===t.layerIds[0]&&this.updateBucketOpacities(t,r.tileID,i,r.collisionBoxArray);}}updateBucketOpacities(e,i,r,o){e.hasTextData()&&(e.text.opacityVertexArray.clear(),e.text.hasVisibleVertices=!1),e.hasIconData()&&(e.icon.opacityVertexArray.clear(),e.icon.hasVisibleVertices=!1),e.hasIconCollisionBoxData()&&e.iconCollisionBox.collisionVertexArray.clear(),e.hasTextCollisionBoxData()&&e.textCollisionBox.collisionVertexArray.clear();const a=e.layers[0],s=a.layout,n=new He(null,0,!1,!1,!0),l=s.get("text-allow-overlap"),c=s.get("icon-allow-overlap"),h=a._unevaluatedLayout.hasValue("text-variable-anchor")||a._unevaluatedLayout.hasValue("text-variable-anchor-offset"),u="map"===s.get("text-rotation-alignment"),d="map"===s.get("text-pitch-alignment"),_="none"!==s.get("icon-text-fit"),p=new He(null,0,l&&(c||!e.hasIconData()||s.get("icon-optional")),c&&(l||!e.hasTextData()||s.get("text-optional")),!0);!e.collisionArrays&&o&&(e.hasIconCollisionBoxData()||e.hasTextCollisionBoxData())&&e.deserializeCollisionBoxes(o);const m=(e,t,i)=>{for(let r=0;r0,v=this.placedOrientations[o.crossTileID],y=v===t.WritingMode.vertical,x=v===t.WritingMode.horizontal||v===t.WritingMode.horizontalOnly;if(a>0||s>0){const t=ct(c.text);m(e.text,a,y?ht:t),m(e.text,s,x?ht:t);const i=c.text.isHidden();[o.rightJustifiedTextSymbolIndex,o.centerJustifiedTextSymbolIndex,o.leftJustifiedTextSymbolIndex].forEach((t=>{t>=0&&(e.text.placedSymbolArray.get(t).hidden=i||y?1:0);})),o.verticalPlacedTextSymbolIndex>=0&&(e.text.placedSymbolArray.get(o.verticalPlacedTextSymbolIndex).hidden=i||x?1:0);const r=this.variableOffsets[o.crossTileID];r&&this.markUsedJustification(e,r.anchor,o,v);const n=this.placedOrientations[o.crossTileID];n&&(this.markUsedJustification(e,"left",o,n),this.markUsedOrientation(e,n,o));}if(g){const t=ct(c.icon),i=!(_&&o.verticalPlacedIconSymbolIndex&&y);o.placedIconSymbolIndex>=0&&(m(e.icon,o.numIconVertices,i?t:ht),e.icon.placedSymbolArray.get(o.placedIconSymbolIndex).hidden=c.icon.isHidden()),o.verticalPlacedIconSymbolIndex>=0&&(m(e.icon,o.numVerticalIconVertices,i?ht:t),e.icon.placedSymbolArray.get(o.verticalPlacedIconSymbolIndex).hidden=c.icon.isHidden());}const b=f&&f.has(i)?f.get(i):{text:null,icon:null};if(e.hasIconCollisionBoxData()||e.hasTextCollisionBoxData()){const r=e.collisionArrays[i];if(r){let i=new t.Point(0,0);if(r.textBox||r.verticalTextBox){let t=!0;if(h){const e=this.variableOffsets[l];e?(i=Qe(e.anchor,e.width,e.height,e.textOffset,e.textBoxScale),u&&i._rotate(d?-this.transform.bearingInRadians:this.transform.bearingInRadians)):t=!1;}if(r.textBox||r.verticalTextBox){let o;r.textBox&&(o=y),r.verticalTextBox&&(o=x),tt(e.textCollisionBox.collisionVertexArray,c.text.placed,!t||o,b.text,i.x,i.y);}}if(r.iconBox||r.verticalIconBox){const t=Boolean(!x&&r.verticalIconBox);let o;r.iconBox&&(o=t),r.verticalIconBox&&(o=!t),tt(e.iconCollisionBox.collisionVertexArray,c.icon.placed,o,b.icon,_?i.x:0,_?i.y:0);}}}}if(e.sortFeatures(-this.transform.bearingInRadians),this.retainedQueryData[e.bucketInstanceId]&&(this.retainedQueryData[e.bucketInstanceId].featureSortOrder=e.featureSortOrder),e.hasTextData()&&e.text.opacityVertexBuffer&&e.text.opacityVertexBuffer.updateData(e.text.opacityVertexArray),e.hasIconData()&&e.icon.opacityVertexBuffer&&e.icon.opacityVertexBuffer.updateData(e.icon.opacityVertexArray),e.hasIconCollisionBoxData()&&e.iconCollisionBox.collisionVertexBuffer&&e.iconCollisionBox.collisionVertexBuffer.updateData(e.iconCollisionBox.collisionVertexArray),e.hasTextCollisionBoxData()&&e.textCollisionBox.collisionVertexBuffer&&e.textCollisionBox.collisionVertexBuffer.updateData(e.textCollisionBox.collisionVertexArray),e.text.opacityVertexArray.length!==e.text.layoutVertexArray.length/4)throw new Error(`bucket.text.opacityVertexArray.length (= ${e.text.opacityVertexArray.length}) !== bucket.text.layoutVertexArray.length (= ${e.text.layoutVertexArray.length}) / 4`);if(e.icon.opacityVertexArray.length!==e.icon.layoutVertexArray.length/4)throw new Error(`bucket.icon.opacityVertexArray.length (= ${e.icon.opacityVertexArray.length}) !== bucket.icon.layoutVertexArray.length (= ${e.icon.layoutVertexArray.length}) / 4`);e.bucketInstanceId in this.collisionCircleArrays&&(e.collisionCircleArray=this.collisionCircleArrays[e.bucketInstanceId],delete this.collisionCircleArrays[e.bucketInstanceId]);}symbolFadeChange(e){return 0===this.fadeDuration?1:(e-this.commitTime)/this.fadeDuration+this.prevZoomAdjustment}zoomAdjustment(e){return Math.max(0,(this.transform.zoom-e)/1.5)}hasTransitions(e){return this.stale||e-this.lastPlacementChangeTimee}setStale(){this.stale=!0;}}function tt(e,t,i,r,o,a){r&&0!==r.length||(r=[0,0,0,0]);const s=r[0]-We,n=r[1]-We,l=r[2]-We,c=r[3]-We;e.emplaceBack(t?1:0,i?1:0,o||0,a||0,s,n),e.emplaceBack(t?1:0,i?1:0,o||0,a||0,l,n),e.emplaceBack(t?1:0,i?1:0,o||0,a||0,l,c),e.emplaceBack(t?1:0,i?1:0,o||0,a||0,s,c);}const it=Math.pow(2,25),rt=Math.pow(2,24),ot=Math.pow(2,17),at=Math.pow(2,16),st=Math.pow(2,9),nt=Math.pow(2,8),lt=Math.pow(2,1);function ct(e){if(0===e.opacity&&!e.placed)return 0;if(1===e.opacity&&e.placed)return 4294967295;const t=e.placed?1:0,i=Math.floor(127*e.opacity);return i*it+t*rt+i*ot+t*at+i*st+t*nt+i*lt+t}const ht=0;class ut{constructor(e){this._sortAcrossTiles="viewport-y"!==e.layout.get("symbol-z-order")&&!e.layout.get("symbol-sort-key").isConstant(),this._currentTileIndex=0,this._currentPartIndex=0,this._seenCrossTileIDs={},this._bucketParts=[];}continuePlacement(e,t,i,r,o){const a=this._bucketParts;for(;this._currentTileIndexe.sortKey-t.sortKey)));this._currentPartIndex!this._forceFullPlacement&&f.now()-r>2;for(;this._currentPlacementIndex>=0;){const r=t[e[this._currentPlacementIndex]],a=this.placement.collisionIndex.transform.zoom;if("symbol"===r.type&&(!r.minzoom||r.minzoom<=a)&&(!r.maxzoom||r.maxzoom>a)){if(this._inProgressLayer||(this._inProgressLayer=new ut(r)),this._inProgressLayer.continuePlacement(i[r.source],this.placement,this._showCollisionBoxes,r,o))return;delete this._inProgressLayer;}this._currentPlacementIndex--;}this._done=!0;}commit(e){return this.placement.commit(e),this.placement}}const _t=512/t.EXTENT/2;class pt{constructor(e,i,r){this.tileID=e,this.bucketInstanceId=r,this._symbolsByKey={};const o=new Map;for(let e=0;e({x:Math.floor(e.anchorX*_t),y:Math.floor(e.anchorY*_t)}))),crossTileIDs:i.map((e=>e.crossTileID))};if(r.positions.length>128){const e=new t.KDBush(r.positions.length,16,Uint16Array);for(const{x:t,y:i}of r.positions)e.add(t,i);e.finish(),delete r.positions,r.index=e;}this._symbolsByKey[e]=r;}}getScaledCoordinates(e,i){const{x:r,y:o,z:a}=this.tileID.canonical,{x:s,y:n,z:l}=i.canonical,c=_t/Math.pow(2,l-a),h=(n*t.EXTENT+e.anchorY)*c,u=o*t.EXTENT*_t;return {x:Math.floor((s*t.EXTENT+e.anchorX)*c-r*t.EXTENT*_t),y:Math.floor(h-u)}}findMatches(e,t,i){const r=this.tileID.canonical.ze))}}class mt{constructor(){this.maxCrossTileID=0;}generate(){return ++this.maxCrossTileID}}class ft{constructor(){this.indexes={},this.usedCrossTileIDs={},this.lng=0;}handleWrapJump(e){const t=Math.round((e-this.lng)/360);if(0!==t)for(const e in this.indexes){const i=this.indexes[e],r={};for(const e in i){const o=i[e];o.tileID=o.tileID.unwrapTo(o.tileID.wrap+t),r[o.tileID.key]=o;}this.indexes[e]=r;}this.lng=e;}addBucket(e,t,i){if(this.indexes[e.overscaledZ]&&this.indexes[e.overscaledZ][e.key]){if(this.indexes[e.overscaledZ][e.key].bucketInstanceId===t.bucketInstanceId)return !1;this.removeBucketCrossTileIDs(e.overscaledZ,this.indexes[e.overscaledZ][e.key]);}for(let e=0;ee.overscaledZ)for(const i in o){const a=o[i];a.tileID.isChildOf(e)&&a.findMatches(t.symbolInstances,e,r);}else {const a=o[e.scaledTo(Number(i)).key];a&&a.findMatches(t.symbolInstances,e,r);}}for(let e=0;e{t[e]=!0;}));for(const e in this.layerIndexes)t[e]||delete this.layerIndexes[e];}}var vt="void main() {gl_FragColor=vec4(1.0);}";const yt={prelude:xt("#ifdef GL_ES\nprecision mediump float;\n#else\n#if !defined(lowp)\n#define lowp\n#endif\n#if !defined(mediump)\n#define mediump\n#endif\n#if !defined(highp)\n#define highp\n#endif\n#endif\n","#ifdef GL_ES\nprecision highp float;\n#else\n#if !defined(lowp)\n#define lowp\n#endif\n#if !defined(mediump)\n#define mediump\n#endif\n#if !defined(highp)\n#define highp\n#endif\n#endif\nvec2 unpack_float(const float packedValue) {int packedIntValue=int(packedValue);int v0=packedIntValue/256;return vec2(v0,packedIntValue-v0*256);}vec2 unpack_opacity(const float packedOpacity) {int intOpacity=int(packedOpacity)/2;return vec2(float(intOpacity)/127.0,mod(packedOpacity,2.0));}vec4 decode_color(const vec2 encodedColor) {return vec4(unpack_float(encodedColor[0])/255.0,unpack_float(encodedColor[1])/255.0\n);}float unpack_mix_vec2(const vec2 packedValue,const float t) {return mix(packedValue[0],packedValue[1],t);}vec4 unpack_mix_color(const vec4 packedColors,const float t) {vec4 minColor=decode_color(vec2(packedColors[0],packedColors[1]));vec4 maxColor=decode_color(vec2(packedColors[2],packedColors[3]));return mix(minColor,maxColor,t);}vec2 get_pattern_pos(const vec2 pixel_coord_upper,const vec2 pixel_coord_lower,const vec2 pattern_size,const float tile_units_to_pixels,const vec2 pos) {vec2 offset=mod(mod(mod(pixel_coord_upper,pattern_size)*256.0,pattern_size)*256.0+pixel_coord_lower,pattern_size);return (tile_units_to_pixels*pos+offset)/pattern_size;}mat3 rotationMatrixFromAxisAngle(vec3 u,float angle) {float c=cos(angle);float s=sin(angle);float c2=1.0-c;return mat3(u.x*u.x*c2+ c,u.x*u.y*c2-u.z*s,u.x*u.z*c2+u.y*s,u.y*u.x*c2+u.z*s,u.y*u.y*c2+ c,u.y*u.z*c2-u.x*s,u.z*u.x*c2-u.y*s,u.z*u.y*c2+u.x*s,u.z*u.z*c2+ c\n);}\n#ifdef TERRAIN3D\nuniform sampler2D u_terrain;uniform float u_terrain_dim;uniform mat4 u_terrain_matrix;uniform vec4 u_terrain_unpack;uniform float u_terrain_exaggeration;uniform highp sampler2D u_depth;\n#endif\nconst highp vec4 bitSh=vec4(256.*256.*256.,256.*256.,256.,1.);const highp vec4 bitShifts=vec4(1.)/bitSh;highp float unpack(highp vec4 color) {return dot(color,bitShifts);}highp float depthOpacity(vec3 frag) {\n#ifdef TERRAIN3D\nhighp float d=unpack(texture2D(u_depth,frag.xy*0.5+0.5))+0.0001-frag.z;return 1.0-max(0.0,min(1.0,-d*500.0));\n#else\nreturn 1.0;\n#endif\n}float calculate_visibility(vec4 pos) {\n#ifdef TERRAIN3D\nvec3 frag=pos.xyz/pos.w;highp float d=depthOpacity(frag);if (d > 0.95) return 1.0;return (d+depthOpacity(frag+vec3(0.0,0.01,0.0)))/2.0;\n#else\nreturn 1.0;\n#endif\n}float ele(vec2 pos) {\n#ifdef TERRAIN3D\nvec4 rgb=(texture2D(u_terrain,pos)*255.0)*u_terrain_unpack;return rgb.r+rgb.g+rgb.b-u_terrain_unpack.a;\n#else\nreturn 0.0;\n#endif\n}float get_elevation(vec2 pos) {\n#ifdef TERRAIN3D\nvec2 coord=(u_terrain_matrix*vec4(pos,0.0,1.0)).xy*u_terrain_dim+1.0;vec2 f=fract(coord);vec2 c=(floor(coord)+0.5)/(u_terrain_dim+2.0);float d=1.0/(u_terrain_dim+2.0);float tl=ele(c);float tr=ele(c+vec2(d,0.0));float bl=ele(c+vec2(0.0,d));float br=ele(c+vec2(d,d));float elevation=mix(mix(tl,tr,f.x),mix(bl,br,f.x),f.y);return elevation*u_terrain_exaggeration;\n#else\nreturn 0.0;\n#endif\n}const float PI=3.141592653589793;uniform mat4 u_projection_matrix;"),projectionMercator:xt("","float projectLineThickness(float tileY) {return 1.0;}float projectCircleRadius(float tileY) {return 1.0;}vec4 projectTile(vec2 p) {vec4 result=u_projection_matrix*vec4(p,0.0,1.0);return result;}vec4 projectTile(vec2 p,vec2 rawPos) {vec4 result=u_projection_matrix*vec4(p,0.0,1.0);if (rawPos.y <-32767.5 || rawPos.y > 32766.5) {result.z=-10000000.0;}return result;}vec4 projectTileWithElevation(vec2 posInTile,float elevation) {return u_projection_matrix*vec4(posInTile,elevation,1.0);}vec4 projectTileFor3D(vec2 posInTile,float elevation) {return projectTileWithElevation(posInTile,elevation);}"),projectionGlobe:xt("","#define GLOBE_RADIUS 6371008.8\nuniform highp vec4 u_projection_tile_mercator_coords;uniform highp vec4 u_projection_clipping_plane;uniform highp float u_projection_transition;uniform mat4 u_projection_fallback_matrix;vec3 globeRotateVector(vec3 vec,vec2 angles) {vec3 axisRight=vec3(vec.z,0.0,-vec.x);vec3 axisUp=cross(axisRight,vec);axisRight=normalize(axisRight);axisUp=normalize(axisUp);vec2 t=tan(angles);return normalize(vec+axisRight*t.x+axisUp*t.y);}mat3 globeGetRotationMatrix(vec3 spherePos) {vec3 axisRight=vec3(spherePos.z,0.0,-spherePos.x);vec3 axisDown=cross(axisRight,spherePos);axisRight=normalize(axisRight);axisDown=normalize(axisDown);return mat3(axisRight,axisDown,spherePos\n);}float circumferenceRatioAtTileY(float tileY) {float mercator_pos_y=u_projection_tile_mercator_coords.y+u_projection_tile_mercator_coords.w*tileY;float spherical_y=2.0*atan(exp(PI-(mercator_pos_y*PI*2.0)))-PI*0.5;return cos(spherical_y);}float projectLineThickness(float tileY) {float thickness=1.0/circumferenceRatioAtTileY(tileY); \nif (u_projection_transition < 0.999) {return mix(1.0,thickness,u_projection_transition);} else {return thickness;}}vec3 projectToSphere(vec2 posInTile,vec2 rawPos) {vec2 mercator_pos=u_projection_tile_mercator_coords.xy+u_projection_tile_mercator_coords.zw*posInTile;vec2 spherical;spherical.x=mercator_pos.x*PI*2.0+PI;spherical.y=2.0*atan(exp(PI-(mercator_pos.y*PI*2.0)))-PI*0.5;float len=cos(spherical.y);vec3 pos=vec3(sin(spherical.x)*len,sin(spherical.y),cos(spherical.x)*len\n);if (rawPos.y <-32767.5) {pos=vec3(0.0,1.0,0.0);}if (rawPos.y > 32766.5) {pos=vec3(0.0,-1.0,0.0);}return pos;}vec3 projectToSphere(vec2 posInTile) {return projectToSphere(posInTile,vec2(0.0,0.0));}float globeComputeClippingZ(vec3 spherePos) {return (1.0-(dot(spherePos,u_projection_clipping_plane.xyz)+u_projection_clipping_plane.w));}vec4 interpolateProjection(vec2 posInTile,vec3 spherePos,float elevation) {vec3 elevatedPos=spherePos*(1.0+elevation/GLOBE_RADIUS);vec4 globePosition=u_projection_matrix*vec4(elevatedPos,1.0);globePosition.z=globeComputeClippingZ(elevatedPos)*globePosition.w;if (u_projection_transition < 0.999) {vec4 flatPosition=u_projection_fallback_matrix*vec4(posInTile,elevation,1.0);const float z_globeness_threshold=0.2;vec4 result=globePosition;result.z=mix(0.0,globePosition.z,clamp((u_projection_transition-z_globeness_threshold)/(1.0-z_globeness_threshold),0.0,1.0));result.xyw=mix(flatPosition.xyw,globePosition.xyw,u_projection_transition);if ((posInTile.y <-32767.5) || (posInTile.y > 32766.5)) {result=globePosition;const float poles_hidden_anim_percentage=0.02;result.z=mix(globePosition.z,100.0,pow(max((1.0-u_projection_transition)/poles_hidden_anim_percentage,0.0),8.0));}return result;}return globePosition;}vec4 interpolateProjectionFor3D(vec2 posInTile,vec3 spherePos,float elevation) {vec3 elevatedPos=spherePos*(1.0+elevation/GLOBE_RADIUS);vec4 globePosition=u_projection_matrix*vec4(elevatedPos,1.0);vec4 fallbackPosition=u_projection_fallback_matrix*vec4(posInTile,elevation,1.0);return mix(fallbackPosition,globePosition,u_projection_transition);}vec4 projectTile(vec2 posInTile) {return interpolateProjection(posInTile,projectToSphere(posInTile),0.0);}vec4 projectTile(vec2 posInTile,vec2 rawPos) {return interpolateProjection(posInTile,projectToSphere(posInTile,rawPos),0.0);}vec4 projectTileWithElevation(vec2 posInTile,float elevation) {return interpolateProjection(posInTile,projectToSphere(posInTile),elevation);}vec4 projectTileFor3D(vec2 posInTile,float elevation) {vec3 spherePos=projectToSphere(posInTile);return interpolateProjectionFor3D(posInTile,spherePos,elevation);}"),background:xt("uniform vec4 u_color;uniform float u_opacity;void main() {gl_FragColor=u_color*u_opacity;\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","attribute vec2 a_pos;void main() {gl_Position=projectTile(a_pos);}"),backgroundPattern:xt("uniform vec2 u_pattern_tl_a;uniform vec2 u_pattern_br_a;uniform vec2 u_pattern_tl_b;uniform vec2 u_pattern_br_b;uniform vec2 u_texsize;uniform float u_mix;uniform float u_opacity;uniform sampler2D u_image;varying vec2 v_pos_a;varying vec2 v_pos_b;void main() {vec2 imagecoord=mod(v_pos_a,1.0);vec2 pos=mix(u_pattern_tl_a/u_texsize,u_pattern_br_a/u_texsize,imagecoord);vec4 color1=texture2D(u_image,pos);vec2 imagecoord_b=mod(v_pos_b,1.0);vec2 pos2=mix(u_pattern_tl_b/u_texsize,u_pattern_br_b/u_texsize,imagecoord_b);vec4 color2=texture2D(u_image,pos2);gl_FragColor=mix(color1,color2,u_mix)*u_opacity;\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","uniform vec2 u_pattern_size_a;uniform vec2 u_pattern_size_b;uniform vec2 u_pixel_coord_upper;uniform vec2 u_pixel_coord_lower;uniform float u_scale_a;uniform float u_scale_b;uniform float u_tile_units_to_pixels;attribute vec2 a_pos;varying vec2 v_pos_a;varying vec2 v_pos_b;void main() {gl_Position=projectTile(a_pos);v_pos_a=get_pattern_pos(u_pixel_coord_upper,u_pixel_coord_lower,u_scale_a*u_pattern_size_a,u_tile_units_to_pixels,a_pos);v_pos_b=get_pattern_pos(u_pixel_coord_upper,u_pixel_coord_lower,u_scale_b*u_pattern_size_b,u_tile_units_to_pixels,a_pos);}"),circle:xt("varying vec3 v_data;varying float v_visibility;\n#pragma mapbox: define highp vec4 color\n#pragma mapbox: define mediump float radius\n#pragma mapbox: define lowp float blur\n#pragma mapbox: define lowp float opacity\n#pragma mapbox: define highp vec4 stroke_color\n#pragma mapbox: define mediump float stroke_width\n#pragma mapbox: define lowp float stroke_opacity\nvoid main() {\n#pragma mapbox: initialize highp vec4 color\n#pragma mapbox: initialize mediump float radius\n#pragma mapbox: initialize lowp float blur\n#pragma mapbox: initialize lowp float opacity\n#pragma mapbox: initialize highp vec4 stroke_color\n#pragma mapbox: initialize mediump float stroke_width\n#pragma mapbox: initialize lowp float stroke_opacity\nvec2 extrude=v_data.xy;float extrude_length=length(extrude);float antialiased_blur=v_data.z;float opacity_t=smoothstep(0.0,antialiased_blur,extrude_length-1.0);float color_t=stroke_width < 0.01 ? 0.0 : smoothstep(antialiased_blur,0.0,extrude_length-radius/(radius+stroke_width));gl_FragColor=v_visibility*opacity_t*mix(color*opacity,stroke_color*stroke_opacity,color_t);const float epsilon=0.5/255.0;if (gl_FragColor.r < epsilon && gl_FragColor.g < epsilon && gl_FragColor.b < epsilon && gl_FragColor.a < epsilon) {discard;}\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","uniform bool u_scale_with_map;uniform bool u_pitch_with_map;uniform vec2 u_extrude_scale;uniform highp float u_globe_extrude_scale;uniform lowp float u_device_pixel_ratio;uniform highp float u_camera_to_center_distance;uniform vec2 u_translate;attribute vec2 a_pos;varying vec3 v_data;varying float v_visibility;\n#pragma mapbox: define highp vec4 color\n#pragma mapbox: define mediump float radius\n#pragma mapbox: define lowp float blur\n#pragma mapbox: define lowp float opacity\n#pragma mapbox: define highp vec4 stroke_color\n#pragma mapbox: define mediump float stroke_width\n#pragma mapbox: define lowp float stroke_opacity\nvoid main(void) {\n#pragma mapbox: initialize highp vec4 color\n#pragma mapbox: initialize mediump float radius\n#pragma mapbox: initialize lowp float blur\n#pragma mapbox: initialize lowp float opacity\n#pragma mapbox: initialize highp vec4 stroke_color\n#pragma mapbox: initialize mediump float stroke_width\n#pragma mapbox: initialize lowp float stroke_opacity\nvec2 pos_raw=a_pos+32768.0;vec2 extrude=vec2(mod(pos_raw,8.0)/7.0*2.0-1.0);vec2 circle_center=floor(pos_raw/8.0)+u_translate;float ele=get_elevation(circle_center);v_visibility=calculate_visibility(projectTileWithElevation(circle_center,ele));if (u_pitch_with_map) {\n#ifdef GLOBE\nvec3 center_vector=projectToSphere(circle_center);\n#endif\nfloat angle_scale=u_globe_extrude_scale;vec2 corner_position=circle_center;if (u_scale_with_map) {angle_scale*=(radius+stroke_width);corner_position+=extrude*u_extrude_scale*(radius+stroke_width);} else {\n#ifdef GLOBE\nvec4 projected_center=interpolateProjection(circle_center,center_vector,ele);\n#else\nvec4 projected_center=projectTileWithElevation(circle_center,ele);\n#endif\ncorner_position+=extrude*u_extrude_scale*(radius+stroke_width)*(projected_center.w/u_camera_to_center_distance);angle_scale*=(radius+stroke_width)*(projected_center.w/u_camera_to_center_distance);}\n#ifdef GLOBE\nvec2 angles=extrude*angle_scale;vec3 corner_vector=globeRotateVector(center_vector,angles);gl_Position=interpolateProjection(corner_position,corner_vector,ele);\n#else\ngl_Position=projectTileWithElevation(corner_position,ele);\n#endif\n} else {gl_Position=projectTileWithElevation(circle_center,ele);if (gl_Position.z/gl_Position.w > 1.0) {gl_Position.xy=vec2(10000.0);}if (u_scale_with_map) {gl_Position.xy+=extrude*(radius+stroke_width)*u_extrude_scale*u_camera_to_center_distance;} else {gl_Position.xy+=extrude*(radius+stroke_width)*u_extrude_scale*gl_Position.w;}}float antialiasblur=-max(1.0/u_device_pixel_ratio/(radius+stroke_width),blur);v_data=vec3(extrude.x,extrude.y,antialiasblur);}"),clippingMask:xt(vt,"attribute vec2 a_pos;void main() {gl_Position=projectTile(a_pos);}"),heatmap:xt("uniform highp float u_intensity;varying vec2 v_extrude;\n#pragma mapbox: define highp float weight\n#define GAUSS_COEF 0.3989422804014327\nvoid main() {\n#pragma mapbox: initialize highp float weight\nfloat d=-0.5*3.0*3.0*dot(v_extrude,v_extrude);float val=weight*u_intensity*GAUSS_COEF*exp(d);gl_FragColor=vec4(val,1.0,1.0,1.0);\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","uniform float u_extrude_scale;uniform float u_opacity;uniform float u_intensity;uniform highp float u_globe_extrude_scale;attribute vec2 a_pos;varying vec2 v_extrude;\n#pragma mapbox: define highp float weight\n#pragma mapbox: define mediump float radius\nconst highp float ZERO=1.0/255.0/16.0;\n#define GAUSS_COEF 0.3989422804014327\nvoid main(void) {\n#pragma mapbox: initialize highp float weight\n#pragma mapbox: initialize mediump float radius\nvec2 pos_raw=a_pos+32768.0;vec2 unscaled_extrude=vec2(mod(pos_raw,8.0)/7.0*2.0-1.0);float S=sqrt(-2.0*log(ZERO/weight/u_intensity/GAUSS_COEF))/3.0;v_extrude=S*unscaled_extrude;vec2 extrude=v_extrude*radius*u_extrude_scale;vec2 circle_center=floor(pos_raw/8.0);\n#ifdef GLOBE\nvec2 angles=v_extrude*radius*u_globe_extrude_scale;vec3 center_vector=projectToSphere(circle_center);vec3 corner_vector=globeRotateVector(center_vector,angles);gl_Position=interpolateProjection(circle_center+extrude,corner_vector,0.0);\n#else\ngl_Position=projectTileFor3D(circle_center+extrude,get_elevation(circle_center));\n#endif\n}"),heatmapTexture:xt("uniform sampler2D u_image;uniform sampler2D u_color_ramp;uniform float u_opacity;varying vec2 v_pos;void main() {float t=texture2D(u_image,v_pos).r;vec4 color=texture2D(u_color_ramp,vec2(t,0.5));gl_FragColor=color*u_opacity;\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(0.0);\n#endif\n}","uniform mat4 u_matrix;uniform vec2 u_world;attribute vec2 a_pos;varying vec2 v_pos;void main() {gl_Position=u_matrix*vec4(a_pos*u_world,0,1);v_pos.x=a_pos.x;v_pos.y=1.0-a_pos.y;}"),collisionBox:xt("varying float v_placed;varying float v_notUsed;void main() {float alpha=0.5;gl_FragColor=vec4(1.0,0.0,0.0,1.0)*alpha;if (v_placed > 0.5) {gl_FragColor=vec4(0.0,0.0,1.0,0.5)*alpha;}if (v_notUsed > 0.5) {gl_FragColor*=.1;}}","attribute vec2 a_anchor_pos;attribute vec2 a_placed;attribute vec2 a_box_real;uniform vec2 u_pixel_extrude_scale;varying float v_placed;varying float v_notUsed;void main() {gl_Position=projectTileWithElevation(a_anchor_pos,get_elevation(a_anchor_pos));gl_Position.xy=((a_box_real+0.5)*u_pixel_extrude_scale*2.0-1.0)*vec2(1.0,-1.0)*gl_Position.w;if (gl_Position.z/gl_Position.w < 1.1) {gl_Position.z=0.5;}v_placed=a_placed.x;v_notUsed=a_placed.y;}"),collisionCircle:xt("varying float v_radius;varying vec2 v_extrude;varying float v_collision;void main() {float alpha=0.5;float stroke_radius=0.9;float distance_to_center=length(v_extrude);float distance_to_edge=abs(distance_to_center-v_radius);float opacity_t=smoothstep(-stroke_radius,0.0,-distance_to_edge);vec4 color=mix(vec4(0.0,0.0,1.0,0.5),vec4(1.0,0.0,0.0,1.0),v_collision);gl_FragColor=color*alpha*opacity_t;}","attribute vec2 a_pos;attribute float a_radius;attribute vec2 a_flags;uniform vec2 u_viewport_size;varying float v_radius;varying vec2 v_extrude;varying float v_collision;void main() {float radius=a_radius;float collision=a_flags.x;float vertexIdx=a_flags.y;vec2 quadVertexOffset=vec2(mix(-1.0,1.0,float(vertexIdx >=2.0)),mix(-1.0,1.0,float(vertexIdx >=1.0 && vertexIdx <=2.0)));vec2 quadVertexExtent=quadVertexOffset*radius;float padding_factor=1.2;v_radius=radius;v_extrude=quadVertexExtent*padding_factor;v_collision=collision;gl_Position=vec4((a_pos/u_viewport_size*2.0-1.0)*vec2(1.0,-1.0),0.0,1.0)+vec4(quadVertexExtent*padding_factor/u_viewport_size*2.0,0.0,0.0);}"),debug:xt("uniform highp vec4 u_color;uniform sampler2D u_overlay;varying vec2 v_uv;void main() {vec4 overlay_color=texture2D(u_overlay,v_uv);gl_FragColor=mix(u_color,overlay_color,overlay_color.a);}","attribute vec2 a_pos;varying vec2 v_uv;uniform float u_overlay_scale;void main() {v_uv=a_pos/8192.0;gl_Position=projectTileWithElevation(a_pos*u_overlay_scale,get_elevation(a_pos));}"),depth:xt(vt,"attribute vec2 a_pos;void main() {\n#ifdef GLOBE\ngl_Position=projectTileFor3D(a_pos,0.0);\n#else\ngl_Position=u_projection_matrix*vec4(a_pos,0.0,1.0);\n#endif\n}"),fill:xt("#pragma mapbox: define highp vec4 color\n#pragma mapbox: define lowp float opacity\nvoid main() {\n#pragma mapbox: initialize highp vec4 color\n#pragma mapbox: initialize lowp float opacity\ngl_FragColor=color*opacity;\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","uniform vec2 u_fill_translate;attribute vec2 a_pos;\n#pragma mapbox: define highp vec4 color\n#pragma mapbox: define lowp float opacity\nvoid main() {\n#pragma mapbox: initialize highp vec4 color\n#pragma mapbox: initialize lowp float opacity\ngl_Position=projectTile(a_pos+u_fill_translate,a_pos);}"),fillOutline:xt("varying vec2 v_pos;\n#ifdef GLOBE\nvarying float v_depth;\n#endif\n#pragma mapbox: define highp vec4 outline_color\n#pragma mapbox: define lowp float opacity\nvoid main() {\n#pragma mapbox: initialize highp vec4 outline_color\n#pragma mapbox: initialize lowp float opacity\nfloat dist=length(v_pos-gl_FragCoord.xy);float alpha=1.0-smoothstep(0.0,1.0,dist);gl_FragColor=outline_color*(alpha*opacity);\n#ifdef GLOBE\nif (v_depth > 1.0) {discard;}\n#endif\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","uniform vec2 u_world;uniform vec2 u_fill_translate;attribute vec2 a_pos;varying vec2 v_pos;\n#ifdef GLOBE\nvarying float v_depth;\n#endif\n#pragma mapbox: define highp vec4 outline_color\n#pragma mapbox: define lowp float opacity\nvoid main() {\n#pragma mapbox: initialize highp vec4 outline_color\n#pragma mapbox: initialize lowp float opacity\ngl_Position=projectTile(a_pos+u_fill_translate,a_pos);v_pos=(gl_Position.xy/gl_Position.w+1.0)/2.0*u_world;\n#ifdef GLOBE\nv_depth=gl_Position.z/gl_Position.w;\n#endif\n}"),fillOutlinePattern:xt("uniform vec2 u_texsize;uniform sampler2D u_image;uniform float u_fade;varying vec2 v_pos_a;varying vec2 v_pos_b;varying vec2 v_pos;\n#ifdef GLOBE\nvarying float v_depth;\n#endif\n#pragma mapbox: define lowp float opacity\n#pragma mapbox: define lowp vec4 pattern_from\n#pragma mapbox: define lowp vec4 pattern_to\nvoid main() {\n#pragma mapbox: initialize lowp float opacity\n#pragma mapbox: initialize mediump vec4 pattern_from\n#pragma mapbox: initialize mediump vec4 pattern_to\nvec2 pattern_tl_a=pattern_from.xy;vec2 pattern_br_a=pattern_from.zw;vec2 pattern_tl_b=pattern_to.xy;vec2 pattern_br_b=pattern_to.zw;vec2 imagecoord=mod(v_pos_a,1.0);vec2 pos=mix(pattern_tl_a/u_texsize,pattern_br_a/u_texsize,imagecoord);vec4 color1=texture2D(u_image,pos);vec2 imagecoord_b=mod(v_pos_b,1.0);vec2 pos2=mix(pattern_tl_b/u_texsize,pattern_br_b/u_texsize,imagecoord_b);vec4 color2=texture2D(u_image,pos2);float dist=length(v_pos-gl_FragCoord.xy);float alpha=1.0-smoothstep(0.0,1.0,dist);gl_FragColor=mix(color1,color2,u_fade)*alpha*opacity;\n#ifdef GLOBE\nif (v_depth > 1.0) {discard;}\n#endif\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","uniform vec2 u_world;uniform vec2 u_pixel_coord_upper;uniform vec2 u_pixel_coord_lower;uniform vec3 u_scale;uniform vec2 u_fill_translate;attribute vec2 a_pos;varying vec2 v_pos_a;varying vec2 v_pos_b;varying vec2 v_pos;\n#ifdef GLOBE\nvarying float v_depth;\n#endif\n#pragma mapbox: define lowp float opacity\n#pragma mapbox: define lowp vec4 pattern_from\n#pragma mapbox: define lowp vec4 pattern_to\n#pragma mapbox: define lowp float pixel_ratio_from\n#pragma mapbox: define lowp float pixel_ratio_to\nvoid main() {\n#pragma mapbox: initialize lowp float opacity\n#pragma mapbox: initialize mediump vec4 pattern_from\n#pragma mapbox: initialize mediump vec4 pattern_to\n#pragma mapbox: initialize lowp float pixel_ratio_from\n#pragma mapbox: initialize lowp float pixel_ratio_to\nvec2 pattern_tl_a=pattern_from.xy;vec2 pattern_br_a=pattern_from.zw;vec2 pattern_tl_b=pattern_to.xy;vec2 pattern_br_b=pattern_to.zw;float tileRatio=u_scale.x;float fromScale=u_scale.y;float toScale=u_scale.z;gl_Position=projectTile(a_pos+u_fill_translate,a_pos);vec2 display_size_a=(pattern_br_a-pattern_tl_a)/pixel_ratio_from;vec2 display_size_b=(pattern_br_b-pattern_tl_b)/pixel_ratio_to;v_pos_a=get_pattern_pos(u_pixel_coord_upper,u_pixel_coord_lower,fromScale*display_size_a,tileRatio,a_pos);v_pos_b=get_pattern_pos(u_pixel_coord_upper,u_pixel_coord_lower,toScale*display_size_b,tileRatio,a_pos);v_pos=(gl_Position.xy/gl_Position.w+1.0)/2.0*u_world;\n#ifdef GLOBE\nv_depth=gl_Position.z/gl_Position.w;\n#endif\n}"),fillPattern:xt("#ifdef GL_ES\nprecision highp float;\n#endif\nuniform vec2 u_texsize;uniform float u_fade;uniform sampler2D u_image;varying vec2 v_pos_a;varying vec2 v_pos_b;\n#pragma mapbox: define lowp float opacity\n#pragma mapbox: define lowp vec4 pattern_from\n#pragma mapbox: define lowp vec4 pattern_to\nvoid main() {\n#pragma mapbox: initialize lowp float opacity\n#pragma mapbox: initialize mediump vec4 pattern_from\n#pragma mapbox: initialize mediump vec4 pattern_to\nvec2 pattern_tl_a=pattern_from.xy;vec2 pattern_br_a=pattern_from.zw;vec2 pattern_tl_b=pattern_to.xy;vec2 pattern_br_b=pattern_to.zw;vec2 imagecoord=mod(v_pos_a,1.0);vec2 pos=mix(pattern_tl_a/u_texsize,pattern_br_a/u_texsize,imagecoord);vec4 color1=texture2D(u_image,pos);vec2 imagecoord_b=mod(v_pos_b,1.0);vec2 pos2=mix(pattern_tl_b/u_texsize,pattern_br_b/u_texsize,imagecoord_b);vec4 color2=texture2D(u_image,pos2);gl_FragColor=mix(color1,color2,u_fade)*opacity;\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","uniform vec2 u_pixel_coord_upper;uniform vec2 u_pixel_coord_lower;uniform vec3 u_scale;uniform vec2 u_fill_translate;attribute vec2 a_pos;varying vec2 v_pos_a;varying vec2 v_pos_b;\n#pragma mapbox: define lowp float opacity\n#pragma mapbox: define lowp vec4 pattern_from\n#pragma mapbox: define lowp vec4 pattern_to\n#pragma mapbox: define lowp float pixel_ratio_from\n#pragma mapbox: define lowp float pixel_ratio_to\nvoid main() {\n#pragma mapbox: initialize lowp float opacity\n#pragma mapbox: initialize mediump vec4 pattern_from\n#pragma mapbox: initialize mediump vec4 pattern_to\n#pragma mapbox: initialize lowp float pixel_ratio_from\n#pragma mapbox: initialize lowp float pixel_ratio_to\nvec2 pattern_tl_a=pattern_from.xy;vec2 pattern_br_a=pattern_from.zw;vec2 pattern_tl_b=pattern_to.xy;vec2 pattern_br_b=pattern_to.zw;float tileZoomRatio=u_scale.x;float fromScale=u_scale.y;float toScale=u_scale.z;vec2 display_size_a=(pattern_br_a-pattern_tl_a)/pixel_ratio_from;vec2 display_size_b=(pattern_br_b-pattern_tl_b)/pixel_ratio_to;gl_Position=projectTile(a_pos+u_fill_translate,a_pos);v_pos_a=get_pattern_pos(u_pixel_coord_upper,u_pixel_coord_lower,fromScale*display_size_a,tileZoomRatio,a_pos);v_pos_b=get_pattern_pos(u_pixel_coord_upper,u_pixel_coord_lower,toScale*display_size_b,tileZoomRatio,a_pos);}"),fillExtrusion:xt("varying vec4 v_color;void main() {gl_FragColor=v_color;\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","uniform vec3 u_lightcolor;uniform lowp vec3 u_lightpos;uniform lowp vec3 u_lightpos_globe;uniform lowp float u_lightintensity;uniform float u_vertical_gradient;uniform lowp float u_opacity;uniform vec2 u_fill_translate;attribute vec2 a_pos;attribute vec4 a_normal_ed;\n#ifdef TERRAIN3D\nattribute vec2 a_centroid;\n#endif\nvarying vec4 v_color;\n#pragma mapbox: define highp float base\n#pragma mapbox: define highp float height\n#pragma mapbox: define highp vec4 color\nvoid main() {\n#pragma mapbox: initialize highp float base\n#pragma mapbox: initialize highp float height\n#pragma mapbox: initialize highp vec4 color\nvec3 normal=a_normal_ed.xyz;\n#ifdef TERRAIN3D\nfloat height_terrain3d_offset=get_elevation(a_centroid);float base_terrain3d_offset=height_terrain3d_offset-(base > 0.0 ? 0.0 : 10.0);\n#else\nfloat height_terrain3d_offset=0.0;float base_terrain3d_offset=0.0;\n#endif\nbase=max(0.0,base)+base_terrain3d_offset;height=max(0.0,height)+height_terrain3d_offset;float t=mod(normal.x,2.0);float elevation=t > 0.0 ? height : base;vec2 posInTile=a_pos+u_fill_translate;\n#ifdef GLOBE\nvec3 spherePos=projectToSphere(posInTile,a_pos);gl_Position=interpolateProjectionFor3D(posInTile,spherePos,elevation);\n#else\ngl_Position=u_projection_matrix*vec4(posInTile,elevation,1.0);\n#endif\nfloat colorvalue=color.r*0.2126+color.g*0.7152+color.b*0.0722;v_color=vec4(0.0,0.0,0.0,1.0);vec4 ambientlight=vec4(0.03,0.03,0.03,1.0);color+=ambientlight;vec3 normalForLighting=normal/16384.0;float directional=clamp(dot(normalForLighting,u_lightpos),0.0,1.0);\n#ifdef GLOBE\nmat3 rotMatrix=globeGetRotationMatrix(spherePos);normalForLighting=rotMatrix*normalForLighting;directional=mix(directional,clamp(dot(normalForLighting,u_lightpos_globe),0.0,1.0),u_projection_transition);\n#endif\ndirectional=mix((1.0-u_lightintensity),max((1.0-colorvalue+u_lightintensity),1.0),directional);if (normal.y !=0.0) {directional*=((1.0-u_vertical_gradient)+(u_vertical_gradient*clamp((t+base)*pow(height/150.0,0.5),mix(0.7,0.98,1.0-u_lightintensity),1.0)));}v_color.r+=clamp(color.r*directional*u_lightcolor.r,mix(0.0,0.3,1.0-u_lightcolor.r),1.0);v_color.g+=clamp(color.g*directional*u_lightcolor.g,mix(0.0,0.3,1.0-u_lightcolor.g),1.0);v_color.b+=clamp(color.b*directional*u_lightcolor.b,mix(0.0,0.3,1.0-u_lightcolor.b),1.0);v_color*=u_opacity;}"),fillExtrusionPattern:xt("uniform vec2 u_texsize;uniform float u_fade;uniform sampler2D u_image;varying vec2 v_pos_a;varying vec2 v_pos_b;varying vec4 v_lighting;\n#pragma mapbox: define lowp float base\n#pragma mapbox: define lowp float height\n#pragma mapbox: define lowp vec4 pattern_from\n#pragma mapbox: define lowp vec4 pattern_to\n#pragma mapbox: define lowp float pixel_ratio_from\n#pragma mapbox: define lowp float pixel_ratio_to\nvoid main() {\n#pragma mapbox: initialize lowp float base\n#pragma mapbox: initialize lowp float height\n#pragma mapbox: initialize mediump vec4 pattern_from\n#pragma mapbox: initialize mediump vec4 pattern_to\n#pragma mapbox: initialize lowp float pixel_ratio_from\n#pragma mapbox: initialize lowp float pixel_ratio_to\nvec2 pattern_tl_a=pattern_from.xy;vec2 pattern_br_a=pattern_from.zw;vec2 pattern_tl_b=pattern_to.xy;vec2 pattern_br_b=pattern_to.zw;vec2 imagecoord=mod(v_pos_a,1.0);vec2 pos=mix(pattern_tl_a/u_texsize,pattern_br_a/u_texsize,imagecoord);vec4 color1=texture2D(u_image,pos);vec2 imagecoord_b=mod(v_pos_b,1.0);vec2 pos2=mix(pattern_tl_b/u_texsize,pattern_br_b/u_texsize,imagecoord_b);vec4 color2=texture2D(u_image,pos2);vec4 mixedColor=mix(color1,color2,u_fade);gl_FragColor=mixedColor*v_lighting;\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","uniform vec2 u_pixel_coord_upper;uniform vec2 u_pixel_coord_lower;uniform float u_height_factor;uniform vec3 u_scale;uniform float u_vertical_gradient;uniform lowp float u_opacity;uniform vec2 u_fill_translate;uniform vec3 u_lightcolor;uniform lowp vec3 u_lightpos;uniform lowp vec3 u_lightpos_globe;uniform lowp float u_lightintensity;attribute vec2 a_pos;attribute vec4 a_normal_ed;\n#ifdef TERRAIN3D\nattribute vec2 a_centroid;\n#endif\n#ifdef GLOBE\nvarying vec3 v_sphere_pos;\n#endif\nvarying vec2 v_pos_a;varying vec2 v_pos_b;varying vec4 v_lighting;\n#pragma mapbox: define lowp float base\n#pragma mapbox: define lowp float height\n#pragma mapbox: define lowp vec4 pattern_from\n#pragma mapbox: define lowp vec4 pattern_to\n#pragma mapbox: define lowp float pixel_ratio_from\n#pragma mapbox: define lowp float pixel_ratio_to\nvoid main() {\n#pragma mapbox: initialize lowp float base\n#pragma mapbox: initialize lowp float height\n#pragma mapbox: initialize mediump vec4 pattern_from\n#pragma mapbox: initialize mediump vec4 pattern_to\n#pragma mapbox: initialize lowp float pixel_ratio_from\n#pragma mapbox: initialize lowp float pixel_ratio_to\nvec2 pattern_tl_a=pattern_from.xy;vec2 pattern_br_a=pattern_from.zw;vec2 pattern_tl_b=pattern_to.xy;vec2 pattern_br_b=pattern_to.zw;float tileRatio=u_scale.x;float fromScale=u_scale.y;float toScale=u_scale.z;vec3 normal=a_normal_ed.xyz;float edgedistance=a_normal_ed.w;vec2 display_size_a=(pattern_br_a-pattern_tl_a)/pixel_ratio_from;vec2 display_size_b=(pattern_br_b-pattern_tl_b)/pixel_ratio_to;\n#ifdef TERRAIN3D\nfloat height_terrain3d_offset=get_elevation(a_centroid);float base_terrain3d_offset=height_terrain3d_offset-(base > 0.0 ? 0.0 : 10.0);\n#else\nfloat height_terrain3d_offset=0.0;float base_terrain3d_offset=0.0;\n#endif\nbase=max(0.0,base)+base_terrain3d_offset;height=max(0.0,height)+height_terrain3d_offset;float t=mod(normal.x,2.0);float elevation=t > 0.0 ? height : base;vec2 posInTile=a_pos+u_fill_translate;\n#ifdef GLOBE\nvec3 spherePos=projectToSphere(posInTile,a_pos);vec3 elevatedPos=spherePos*(1.0+elevation/GLOBE_RADIUS);v_sphere_pos=elevatedPos;gl_Position=interpolateProjectionFor3D(posInTile,spherePos,elevation);\n#else\ngl_Position=u_projection_matrix*vec4(posInTile,elevation,1.0);\n#endif\nvec2 pos=normal.x==1.0 && normal.y==0.0 && normal.z==16384.0\n? a_pos\n: vec2(edgedistance,elevation*u_height_factor);v_pos_a=get_pattern_pos(u_pixel_coord_upper,u_pixel_coord_lower,fromScale*display_size_a,tileRatio,pos);v_pos_b=get_pattern_pos(u_pixel_coord_upper,u_pixel_coord_lower,toScale*display_size_b,tileRatio,pos);v_lighting=vec4(0.0,0.0,0.0,1.0);float directional=clamp(dot(normal/16383.0,u_lightpos),0.0,1.0);directional=mix((1.0-u_lightintensity),max((0.5+u_lightintensity),1.0),directional);if (normal.y !=0.0) {directional*=((1.0-u_vertical_gradient)+(u_vertical_gradient*clamp((t+base)*pow(height/150.0,0.5),mix(0.7,0.98,1.0-u_lightintensity),1.0)));}v_lighting.rgb+=clamp(directional*u_lightcolor,mix(vec3(0.0),vec3(0.3),1.0-u_lightcolor),vec3(1.0));v_lighting*=u_opacity;}"),hillshadePrepare:xt("#ifdef GL_ES\nprecision highp float;\n#endif\nuniform sampler2D u_image;varying vec2 v_pos;uniform vec2 u_dimension;uniform float u_zoom;uniform vec4 u_unpack;float getElevation(vec2 coord,float bias) {vec4 data=texture2D(u_image,coord)*255.0;data.a=-1.0;return dot(data,u_unpack)/4.0;}void main() {vec2 epsilon=1.0/u_dimension;float a=getElevation(v_pos+vec2(-epsilon.x,-epsilon.y),0.0);float b=getElevation(v_pos+vec2(0,-epsilon.y),0.0);float c=getElevation(v_pos+vec2(epsilon.x,-epsilon.y),0.0);float d=getElevation(v_pos+vec2(-epsilon.x,0),0.0);float e=getElevation(v_pos,0.0);float f=getElevation(v_pos+vec2(epsilon.x,0),0.0);float g=getElevation(v_pos+vec2(-epsilon.x,epsilon.y),0.0);float h=getElevation(v_pos+vec2(0,epsilon.y),0.0);float i=getElevation(v_pos+vec2(epsilon.x,epsilon.y),0.0);float exaggerationFactor=u_zoom < 2.0 ? 0.4 : u_zoom < 4.5 ? 0.35 : 0.3;float exaggeration=u_zoom < 15.0 ? (u_zoom-15.0)*exaggerationFactor : 0.0;vec2 deriv=vec2((c+f+f+i)-(a+d+d+g),(g+h+h+i)-(a+b+b+c))/pow(2.0,exaggeration+(19.2562-u_zoom));gl_FragColor=clamp(vec4(deriv.x/2.0+0.5,deriv.y/2.0+0.5,1.0,1.0),0.0,1.0);\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","uniform mat4 u_matrix;uniform vec2 u_dimension;attribute vec2 a_pos;attribute vec2 a_texture_pos;varying vec2 v_pos;void main() {gl_Position=u_matrix*vec4(a_pos,0,1);highp vec2 epsilon=1.0/u_dimension;float scale=(u_dimension.x-2.0)/u_dimension.x;v_pos=(a_texture_pos/8192.0)*scale+epsilon;}"),hillshade:xt("uniform sampler2D u_image;varying vec2 v_pos;uniform vec2 u_latrange;uniform vec2 u_light;uniform vec4 u_shadow;uniform vec4 u_highlight;uniform vec4 u_accent;\n#define PI 3.141592653589793\nvoid main() {vec4 pixel=texture2D(u_image,v_pos);vec2 deriv=((pixel.rg*2.0)-1.0);float scaleFactor=cos(radians((u_latrange[0]-u_latrange[1])*(1.0-v_pos.y)+u_latrange[1]));float slope=atan(1.25*length(deriv)/scaleFactor);float aspect=deriv.x !=0.0 ? atan(deriv.y,-deriv.x) : PI/2.0*(deriv.y > 0.0 ? 1.0 :-1.0);float intensity=u_light.x;float azimuth=u_light.y+PI;float base=1.875-intensity*1.75;float maxValue=0.5*PI;float scaledSlope=intensity !=0.5 ? ((pow(base,slope)-1.0)/(pow(base,maxValue)-1.0))*maxValue : slope;float accent=cos(scaledSlope);vec4 accent_color=(1.0-accent)*u_accent*clamp(intensity*2.0,0.0,1.0);float shade=abs(mod((aspect+azimuth)/PI+0.5,2.0)-1.0);vec4 shade_color=mix(u_shadow,u_highlight,shade)*sin(scaledSlope)*clamp(intensity*2.0,0.0,1.0);gl_FragColor=accent_color*(1.0-shade_color.a)+shade_color;\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","uniform mat4 u_matrix;attribute vec2 a_pos;varying vec2 v_pos;void main() {gl_Position=projectTile(a_pos,a_pos);v_pos=a_pos/8192.0;if (a_pos.y <-32767.5) {v_pos.y=0.0;}if (a_pos.y > 32766.5) {v_pos.y=1.0;}}"),line:xt("uniform lowp float u_device_pixel_ratio;varying vec2 v_width2;varying vec2 v_normal;varying float v_gamma_scale;\n#ifdef GLOBE\nvarying float v_depth;\n#endif\n#pragma mapbox: define highp vec4 color\n#pragma mapbox: define lowp float blur\n#pragma mapbox: define lowp float opacity\nvoid main() {\n#pragma mapbox: initialize highp vec4 color\n#pragma mapbox: initialize lowp float blur\n#pragma mapbox: initialize lowp float opacity\nfloat dist=length(v_normal)*v_width2.s;float blur2=(blur+1.0/u_device_pixel_ratio)*v_gamma_scale;float alpha=clamp(min(dist-(v_width2.t-blur2),v_width2.s-dist)/blur2,0.0,1.0);gl_FragColor=color*(alpha*opacity);\n#ifdef GLOBE\nif (v_depth > 1.0) {discard;}\n#endif\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","\n#define scale 0.015873016\nattribute vec2 a_pos_normal;attribute vec4 a_data;uniform vec2 u_translation;uniform mediump float u_ratio;uniform vec2 u_units_to_pixels;uniform lowp float u_device_pixel_ratio;varying vec2 v_normal;varying vec2 v_width2;varying float v_gamma_scale;varying highp float v_linesofar;\n#ifdef GLOBE\nvarying float v_depth;\n#endif\n#pragma mapbox: define highp vec4 color\n#pragma mapbox: define lowp float blur\n#pragma mapbox: define lowp float opacity\n#pragma mapbox: define mediump float gapwidth\n#pragma mapbox: define lowp float offset\n#pragma mapbox: define mediump float width\nvoid main() {\n#pragma mapbox: initialize highp vec4 color\n#pragma mapbox: initialize lowp float blur\n#pragma mapbox: initialize lowp float opacity\n#pragma mapbox: initialize mediump float gapwidth\n#pragma mapbox: initialize lowp float offset\n#pragma mapbox: initialize mediump float width\nfloat ANTIALIASING=1.0/u_device_pixel_ratio/2.0;vec2 a_extrude=a_data.xy-128.0;float a_direction=mod(a_data.z,4.0)-1.0;v_linesofar=(floor(a_data.z/4.0)+a_data.w*64.0)*2.0;vec2 pos=floor(a_pos_normal*0.5);mediump vec2 normal=a_pos_normal-2.0*pos;normal.y=normal.y*2.0-1.0;v_normal=normal;gapwidth=gapwidth/2.0;float halfwidth=width/2.0;offset=-1.0*offset;float inset=gapwidth+(gapwidth > 0.0 ? ANTIALIASING : 0.0);float outset=gapwidth+halfwidth*(gapwidth > 0.0 ? 2.0 : 1.0)+(halfwidth==0.0 ? 0.0 : ANTIALIASING);mediump vec2 dist=outset*a_extrude*scale;mediump float u=0.5*a_direction;mediump float t=1.0-abs(u);mediump vec2 offset2=offset*a_extrude*scale*normal.y*mat2(t,-u,u,t);float adjustedThickness=projectLineThickness(pos.y);vec4 projected_no_extrude=projectTile(pos+offset2/u_ratio*adjustedThickness+u_translation);vec4 projected_with_extrude=projectTile(pos+offset2/u_ratio*adjustedThickness+u_translation+dist/u_ratio*adjustedThickness);gl_Position=projected_with_extrude;\n#ifdef GLOBE\nv_depth=gl_Position.z/gl_Position.w;\n#endif\n#ifdef TERRAIN3D\nv_gamma_scale=1.0;\n#else\nfloat extrude_length_without_perspective=length(dist);float extrude_length_with_perspective=length((projected_with_extrude.xy-projected_no_extrude.xy)/projected_with_extrude.w*u_units_to_pixels);v_gamma_scale=extrude_length_without_perspective/extrude_length_with_perspective;\n#endif\nv_width2=vec2(outset,inset);}"),lineGradient:xt("uniform lowp float u_device_pixel_ratio;uniform sampler2D u_image;varying vec2 v_width2;varying vec2 v_normal;varying float v_gamma_scale;varying highp vec2 v_uv;\n#ifdef GLOBE\nvarying float v_depth;\n#endif\n#pragma mapbox: define lowp float blur\n#pragma mapbox: define lowp float opacity\nvoid main() {\n#pragma mapbox: initialize lowp float blur\n#pragma mapbox: initialize lowp float opacity\nfloat dist=length(v_normal)*v_width2.s;float blur2=(blur+1.0/u_device_pixel_ratio)*v_gamma_scale;float alpha=clamp(min(dist-(v_width2.t-blur2),v_width2.s-dist)/blur2,0.0,1.0);vec4 color=texture2D(u_image,v_uv);gl_FragColor=color*(alpha*opacity);\n#ifdef GLOBE\nif (v_depth > 1.0) {discard;}\n#endif\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","\n#define scale 0.015873016\nattribute vec2 a_pos_normal;attribute vec4 a_data;attribute float a_uv_x;attribute float a_split_index;uniform vec2 u_translation;uniform mediump float u_ratio;uniform lowp float u_device_pixel_ratio;uniform vec2 u_units_to_pixels;uniform float u_image_height;varying vec2 v_normal;varying vec2 v_width2;varying float v_gamma_scale;varying highp vec2 v_uv;\n#ifdef GLOBE\nvarying float v_depth;\n#endif\n#pragma mapbox: define lowp float blur\n#pragma mapbox: define lowp float opacity\n#pragma mapbox: define mediump float gapwidth\n#pragma mapbox: define lowp float offset\n#pragma mapbox: define mediump float width\nvoid main() {\n#pragma mapbox: initialize lowp float blur\n#pragma mapbox: initialize lowp float opacity\n#pragma mapbox: initialize mediump float gapwidth\n#pragma mapbox: initialize lowp float offset\n#pragma mapbox: initialize mediump float width\nfloat ANTIALIASING=1.0/u_device_pixel_ratio/2.0;vec2 a_extrude=a_data.xy-128.0;float a_direction=mod(a_data.z,4.0)-1.0;highp float texel_height=1.0/u_image_height;highp float half_texel_height=0.5*texel_height;v_uv=vec2(a_uv_x,a_split_index*texel_height-half_texel_height);vec2 pos=floor(a_pos_normal*0.5);mediump vec2 normal=a_pos_normal-2.0*pos;normal.y=normal.y*2.0-1.0;v_normal=normal;gapwidth=gapwidth/2.0;float halfwidth=width/2.0;offset=-1.0*offset;float inset=gapwidth+(gapwidth > 0.0 ? ANTIALIASING : 0.0);float outset=gapwidth+halfwidth*(gapwidth > 0.0 ? 2.0 : 1.0)+(halfwidth==0.0 ? 0.0 : ANTIALIASING);mediump vec2 dist=outset*a_extrude*scale;mediump float u=0.5*a_direction;mediump float t=1.0-abs(u);mediump vec2 offset2=offset*a_extrude*scale*normal.y*mat2(t,-u,u,t);float adjustedThickness=projectLineThickness(pos.y);vec4 projected_no_extrude=projectTile(pos+offset2/u_ratio*adjustedThickness+u_translation);vec4 projected_with_extrude=projectTile(pos+offset2/u_ratio*adjustedThickness+u_translation+dist/u_ratio*adjustedThickness);gl_Position=projected_with_extrude;\n#ifdef GLOBE\nv_depth=gl_Position.z/gl_Position.w;\n#endif\n#ifdef TERRAIN3D\nv_gamma_scale=1.0;\n#else\nfloat extrude_length_without_perspective=length(dist);float extrude_length_with_perspective=length((projected_with_extrude.xy-projected_no_extrude.xy)/projected_with_extrude.w*u_units_to_pixels);v_gamma_scale=extrude_length_without_perspective/extrude_length_with_perspective;\n#endif\nv_width2=vec2(outset,inset);}"),linePattern:xt("#ifdef GL_ES\nprecision highp float;\n#endif\nuniform lowp float u_device_pixel_ratio;uniform vec2 u_texsize;uniform float u_fade;uniform mediump vec3 u_scale;uniform sampler2D u_image;varying vec2 v_normal;varying vec2 v_width2;varying float v_linesofar;varying float v_gamma_scale;varying float v_width;\n#ifdef GLOBE\nvarying float v_depth;\n#endif\n#pragma mapbox: define lowp vec4 pattern_from\n#pragma mapbox: define lowp vec4 pattern_to\n#pragma mapbox: define lowp float pixel_ratio_from\n#pragma mapbox: define lowp float pixel_ratio_to\n#pragma mapbox: define lowp float blur\n#pragma mapbox: define lowp float opacity\nvoid main() {\n#pragma mapbox: initialize mediump vec4 pattern_from\n#pragma mapbox: initialize mediump vec4 pattern_to\n#pragma mapbox: initialize lowp float pixel_ratio_from\n#pragma mapbox: initialize lowp float pixel_ratio_to\n#pragma mapbox: initialize lowp float blur\n#pragma mapbox: initialize lowp float opacity\nvec2 pattern_tl_a=pattern_from.xy;vec2 pattern_br_a=pattern_from.zw;vec2 pattern_tl_b=pattern_to.xy;vec2 pattern_br_b=pattern_to.zw;float tileZoomRatio=u_scale.x;float fromScale=u_scale.y;float toScale=u_scale.z;vec2 display_size_a=(pattern_br_a-pattern_tl_a)/pixel_ratio_from;vec2 display_size_b=(pattern_br_b-pattern_tl_b)/pixel_ratio_to;vec2 pattern_size_a=vec2(display_size_a.x*fromScale/tileZoomRatio,display_size_a.y);vec2 pattern_size_b=vec2(display_size_b.x*toScale/tileZoomRatio,display_size_b.y);float aspect_a=display_size_a.y/v_width;float aspect_b=display_size_b.y/v_width;float dist=length(v_normal)*v_width2.s;float blur2=(blur+1.0/u_device_pixel_ratio)*v_gamma_scale;float alpha=clamp(min(dist-(v_width2.t-blur2),v_width2.s-dist)/blur2,0.0,1.0);float x_a=mod(v_linesofar/pattern_size_a.x*aspect_a,1.0);float x_b=mod(v_linesofar/pattern_size_b.x*aspect_b,1.0);float y=0.5*v_normal.y+0.5;vec2 texel_size=1.0/u_texsize;vec2 pos_a=mix(pattern_tl_a*texel_size-texel_size,pattern_br_a*texel_size+texel_size,vec2(x_a,y));vec2 pos_b=mix(pattern_tl_b*texel_size-texel_size,pattern_br_b*texel_size+texel_size,vec2(x_b,y));vec4 color=mix(texture2D(u_image,pos_a),texture2D(u_image,pos_b),u_fade);gl_FragColor=color*alpha*opacity;\n#ifdef GLOBE\nif (v_depth > 1.0) {discard;}\n#endif\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","\n#define scale 0.015873016\n#define LINE_DISTANCE_SCALE 2.0\nattribute vec2 a_pos_normal;attribute vec4 a_data;uniform vec2 u_translation;uniform vec2 u_units_to_pixels;uniform mediump float u_ratio;uniform lowp float u_device_pixel_ratio;varying vec2 v_normal;varying vec2 v_width2;varying float v_linesofar;varying float v_gamma_scale;varying float v_width;\n#ifdef GLOBE\nvarying float v_depth;\n#endif\n#pragma mapbox: define lowp float blur\n#pragma mapbox: define lowp float opacity\n#pragma mapbox: define lowp float offset\n#pragma mapbox: define mediump float gapwidth\n#pragma mapbox: define mediump float width\n#pragma mapbox: define lowp float floorwidth\n#pragma mapbox: define lowp vec4 pattern_from\n#pragma mapbox: define lowp vec4 pattern_to\n#pragma mapbox: define lowp float pixel_ratio_from\n#pragma mapbox: define lowp float pixel_ratio_to\nvoid main() {\n#pragma mapbox: initialize lowp float blur\n#pragma mapbox: initialize lowp float opacity\n#pragma mapbox: initialize lowp float offset\n#pragma mapbox: initialize mediump float gapwidth\n#pragma mapbox: initialize mediump float width\n#pragma mapbox: initialize lowp float floorwidth\n#pragma mapbox: initialize mediump vec4 pattern_from\n#pragma mapbox: initialize mediump vec4 pattern_to\n#pragma mapbox: initialize lowp float pixel_ratio_from\n#pragma mapbox: initialize lowp float pixel_ratio_to\nfloat ANTIALIASING=1.0/u_device_pixel_ratio/2.0;vec2 a_extrude=a_data.xy-128.0;float a_direction=mod(a_data.z,4.0)-1.0;float a_linesofar=(floor(a_data.z/4.0)+a_data.w*64.0)*LINE_DISTANCE_SCALE;vec2 pos=floor(a_pos_normal*0.5);mediump vec2 normal=a_pos_normal-2.0*pos;normal.y=normal.y*2.0-1.0;v_normal=normal;gapwidth=gapwidth/2.0;float halfwidth=width/2.0;offset=-1.0*offset;float inset=gapwidth+(gapwidth > 0.0 ? ANTIALIASING : 0.0);float outset=gapwidth+halfwidth*(gapwidth > 0.0 ? 2.0 : 1.0)+(halfwidth==0.0 ? 0.0 : ANTIALIASING);mediump vec2 dist=outset*a_extrude*scale;mediump float u=0.5*a_direction;mediump float t=1.0-abs(u);mediump vec2 offset2=offset*a_extrude*scale*normal.y*mat2(t,-u,u,t);float adjustedThickness=projectLineThickness(pos.y);vec4 projected_no_extrude=projectTile(pos+offset2/u_ratio*adjustedThickness+u_translation);vec4 projected_with_extrude=projectTile(pos+offset2/u_ratio*adjustedThickness+u_translation+dist/u_ratio*adjustedThickness);gl_Position=projected_with_extrude;\n#ifdef GLOBE\nv_depth=gl_Position.z/gl_Position.w;\n#endif\n#ifdef TERRAIN3D\nv_gamma_scale=1.0;\n#else\nfloat extrude_length_without_perspective=length(dist);float extrude_length_with_perspective=length((projected_with_extrude.xy-projected_no_extrude.xy)/projected_with_extrude.w*u_units_to_pixels);v_gamma_scale=extrude_length_without_perspective/extrude_length_with_perspective;\n#endif\nv_linesofar=a_linesofar;v_width2=vec2(outset,inset);v_width=floorwidth;}"),lineSDF:xt("uniform lowp float u_device_pixel_ratio;uniform sampler2D u_image;uniform float u_sdfgamma;uniform float u_mix;varying vec2 v_normal;varying vec2 v_width2;varying vec2 v_tex_a;varying vec2 v_tex_b;varying float v_gamma_scale;\n#ifdef GLOBE\nvarying float v_depth;\n#endif\n#pragma mapbox: define highp vec4 color\n#pragma mapbox: define lowp float blur\n#pragma mapbox: define lowp float opacity\n#pragma mapbox: define mediump float width\n#pragma mapbox: define lowp float floorwidth\nvoid main() {\n#pragma mapbox: initialize highp vec4 color\n#pragma mapbox: initialize lowp float blur\n#pragma mapbox: initialize lowp float opacity\n#pragma mapbox: initialize mediump float width\n#pragma mapbox: initialize lowp float floorwidth\nfloat dist=length(v_normal)*v_width2.s;float blur2=(blur+1.0/u_device_pixel_ratio)*v_gamma_scale;float alpha=clamp(min(dist-(v_width2.t-blur2),v_width2.s-dist)/blur2,0.0,1.0);float sdfdist_a=texture2D(u_image,v_tex_a).a;float sdfdist_b=texture2D(u_image,v_tex_b).a;float sdfdist=mix(sdfdist_a,sdfdist_b,u_mix);alpha*=smoothstep(0.5-u_sdfgamma/floorwidth,0.5+u_sdfgamma/floorwidth,sdfdist);gl_FragColor=color*(alpha*opacity);\n#ifdef GLOBE\nif (v_depth > 1.0) {discard;}\n#endif\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","\n#define scale 0.015873016\n#define LINE_DISTANCE_SCALE 2.0\nattribute vec2 a_pos_normal;attribute vec4 a_data;uniform vec2 u_translation;uniform mediump float u_ratio;uniform lowp float u_device_pixel_ratio;uniform vec2 u_patternscale_a;uniform float u_tex_y_a;uniform vec2 u_patternscale_b;uniform float u_tex_y_b;uniform vec2 u_units_to_pixels;varying vec2 v_normal;varying vec2 v_width2;varying vec2 v_tex_a;varying vec2 v_tex_b;varying float v_gamma_scale;\n#ifdef GLOBE\nvarying float v_depth;\n#endif\n#pragma mapbox: define highp vec4 color\n#pragma mapbox: define lowp float blur\n#pragma mapbox: define lowp float opacity\n#pragma mapbox: define mediump float gapwidth\n#pragma mapbox: define lowp float offset\n#pragma mapbox: define mediump float width\n#pragma mapbox: define lowp float floorwidth\nvoid main() {\n#pragma mapbox: initialize highp vec4 color\n#pragma mapbox: initialize lowp float blur\n#pragma mapbox: initialize lowp float opacity\n#pragma mapbox: initialize mediump float gapwidth\n#pragma mapbox: initialize lowp float offset\n#pragma mapbox: initialize mediump float width\n#pragma mapbox: initialize lowp float floorwidth\nfloat ANTIALIASING=1.0/u_device_pixel_ratio/2.0;vec2 a_extrude=a_data.xy-128.0;float a_direction=mod(a_data.z,4.0)-1.0;float a_linesofar=(floor(a_data.z/4.0)+a_data.w*64.0)*LINE_DISTANCE_SCALE;vec2 pos=floor(a_pos_normal*0.5);mediump vec2 normal=a_pos_normal-2.0*pos;normal.y=normal.y*2.0-1.0;v_normal=normal;gapwidth=gapwidth/2.0;float halfwidth=width/2.0;offset=-1.0*offset;float inset=gapwidth+(gapwidth > 0.0 ? ANTIALIASING : 0.0);float outset=gapwidth+halfwidth*(gapwidth > 0.0 ? 2.0 : 1.0)+(halfwidth==0.0 ? 0.0 : ANTIALIASING);mediump vec2 dist=outset*a_extrude*scale;mediump float u=0.5*a_direction;mediump float t=1.0-abs(u);mediump vec2 offset2=offset*a_extrude*scale*normal.y*mat2(t,-u,u,t);float adjustedThickness=projectLineThickness(pos.y);vec4 projected_no_extrude=projectTile(pos+offset2/u_ratio*adjustedThickness+u_translation);vec4 projected_with_extrude=projectTile(pos+offset2/u_ratio*adjustedThickness+u_translation+dist/u_ratio*adjustedThickness);gl_Position=projected_with_extrude;\n#ifdef GLOBE\nv_depth=gl_Position.z/gl_Position.w;\n#endif\n#ifdef TERRAIN3D\nv_gamma_scale=1.0;\n#else\nfloat extrude_length_without_perspective=length(dist);float extrude_length_with_perspective=length((projected_with_extrude.xy-projected_no_extrude.xy)/projected_with_extrude.w*u_units_to_pixels);v_gamma_scale=extrude_length_without_perspective/extrude_length_with_perspective;\n#endif\nv_tex_a=vec2(a_linesofar*u_patternscale_a.x/floorwidth,normal.y*u_patternscale_a.y+u_tex_y_a);v_tex_b=vec2(a_linesofar*u_patternscale_b.x/floorwidth,normal.y*u_patternscale_b.y+u_tex_y_b);v_width2=vec2(outset,inset);}"),raster:xt("uniform float u_fade_t;uniform float u_opacity;uniform sampler2D u_image0;uniform sampler2D u_image1;varying vec2 v_pos0;varying vec2 v_pos1;uniform float u_brightness_low;uniform float u_brightness_high;uniform float u_saturation_factor;uniform float u_contrast_factor;uniform vec3 u_spin_weights;void main() {vec4 color0=texture2D(u_image0,v_pos0);vec4 color1=texture2D(u_image1,v_pos1);if (color0.a > 0.0) {color0.rgb=color0.rgb/color0.a;}if (color1.a > 0.0) {color1.rgb=color1.rgb/color1.a;}vec4 color=mix(color0,color1,u_fade_t);color.a*=u_opacity;vec3 rgb=color.rgb;rgb=vec3(dot(rgb,u_spin_weights.xyz),dot(rgb,u_spin_weights.zxy),dot(rgb,u_spin_weights.yzx));float average=(color.r+color.g+color.b)/3.0;rgb+=(average-rgb)*u_saturation_factor;rgb=(rgb-0.5)*u_contrast_factor+0.5;vec3 u_high_vec=vec3(u_brightness_low,u_brightness_low,u_brightness_low);vec3 u_low_vec=vec3(u_brightness_high,u_brightness_high,u_brightness_high);gl_FragColor=vec4(mix(u_high_vec,u_low_vec,rgb)*color.a,color.a);\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","uniform vec2 u_tl_parent;uniform float u_scale_parent;uniform float u_buffer_scale;uniform vec4 u_coords_top;uniform vec4 u_coords_bottom;attribute vec2 a_pos;varying vec2 v_pos0;varying vec2 v_pos1;void main() {vec2 fractionalPos=a_pos/8192.0;vec2 position=mix(mix(u_coords_top.xy,u_coords_top.zw,fractionalPos.x),mix(u_coords_bottom.xy,u_coords_bottom.zw,fractionalPos.x),fractionalPos.y);gl_Position=projectTile(position,position);v_pos0=((fractionalPos-0.5)/u_buffer_scale)+0.5;\n#ifdef GLOBE\nif (a_pos.y <-32767.5) {v_pos0.y=0.0;}if (a_pos.y > 32766.5) {v_pos0.y=1.0;}\n#endif\nv_pos1=(v_pos0*u_scale_parent)+u_tl_parent;}"),symbolIcon:xt("uniform sampler2D u_texture;varying vec2 v_tex;varying float v_fade_opacity;\n#pragma mapbox: define lowp float opacity\nvoid main() {\n#pragma mapbox: initialize lowp float opacity\nlowp float alpha=opacity*v_fade_opacity;gl_FragColor=texture2D(u_texture,v_tex)*alpha;\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","attribute vec4 a_pos_offset;attribute vec4 a_data;attribute vec4 a_pixeloffset;attribute vec3 a_projected_pos;attribute float a_fade_opacity;uniform bool u_is_size_zoom_constant;uniform bool u_is_size_feature_constant;uniform highp float u_size_t;uniform highp float u_size;uniform highp float u_camera_to_center_distance;uniform highp float u_pitch;uniform bool u_rotate_symbol;uniform highp float u_aspect_ratio;uniform float u_fade_change;uniform mat4 u_label_plane_matrix;uniform mat4 u_coord_matrix;uniform bool u_is_text;uniform bool u_pitch_with_map;uniform vec2 u_texsize;uniform bool u_is_along_line;uniform bool u_is_variable_anchor;uniform vec2 u_translation;uniform float u_pitched_scale;varying vec2 v_tex;varying float v_fade_opacity;\n#pragma mapbox: define lowp float opacity\nvoid main() {\n#pragma mapbox: initialize lowp float opacity\nvec2 a_pos=a_pos_offset.xy;vec2 a_offset=a_pos_offset.zw;vec2 a_tex=a_data.xy;vec2 a_size=a_data.zw;float a_size_min=floor(a_size[0]*0.5);vec2 a_pxoffset=a_pixeloffset.xy;vec2 a_minFontScale=a_pixeloffset.zw/256.0;float ele=get_elevation(a_pos);highp float segment_angle=-a_projected_pos[2];float size;if (!u_is_size_zoom_constant && !u_is_size_feature_constant) {size=mix(a_size_min,a_size[1],u_size_t)/128.0;} else if (u_is_size_zoom_constant && !u_is_size_feature_constant) {size=a_size_min/128.0;} else {size=u_size;}vec2 translated_a_pos=a_pos+u_translation;vec4 projectedPoint=projectTileWithElevation(translated_a_pos,ele);highp float camera_to_anchor_distance=projectedPoint.w;highp float distance_ratio=u_pitch_with_map ?\ncamera_to_anchor_distance/u_camera_to_center_distance :\nu_camera_to_center_distance/camera_to_anchor_distance;highp float perspective_ratio=clamp(0.5+0.5*distance_ratio,0.0,4.0);size*=perspective_ratio;float fontScale=u_is_text ? size/24.0 : size;highp float symbol_rotation=0.0;if (u_rotate_symbol) {vec4 offsetProjectedPoint=projectTileWithElevation(translated_a_pos+vec2(1,0),ele);vec2 a=projectedPoint.xy/projectedPoint.w;vec2 b=offsetProjectedPoint.xy/offsetProjectedPoint.w;symbol_rotation=atan((b.y-a.y)/u_aspect_ratio,b.x-a.x);}highp float angle_sin=sin(segment_angle+symbol_rotation);highp float angle_cos=cos(segment_angle+symbol_rotation);mat2 rotation_matrix=mat2(angle_cos,-1.0*angle_sin,angle_sin,angle_cos);vec4 projected_pos;if (u_is_along_line || u_is_variable_anchor) {projected_pos=vec4(a_projected_pos.xy,ele,1.0);} else if (u_pitch_with_map) {projected_pos=u_label_plane_matrix*vec4(a_projected_pos.xy+u_translation,ele,1.0);} else {projected_pos=u_label_plane_matrix*projectTileWithElevation(a_projected_pos.xy+u_translation,ele);}float z=float(u_pitch_with_map)*projected_pos.z/projected_pos.w;float projectionScaling=1.0;\n#ifdef GLOBE\nif(u_pitch_with_map && !u_is_along_line) {float anchor_pos_tile_y=(u_coord_matrix*vec4(projected_pos.xy/projected_pos.w,z,1.0)).y;projectionScaling=mix(projectionScaling,1.0/circumferenceRatioAtTileY(anchor_pos_tile_y)*u_pitched_scale,u_projection_transition);}\n#endif\nvec4 finalPos=u_coord_matrix*vec4(projected_pos.xy/projected_pos.w+rotation_matrix*(a_offset/32.0*max(a_minFontScale,fontScale)+a_pxoffset/16.0)*projectionScaling,z,1.0);if(u_pitch_with_map) {finalPos=projectTileWithElevation(finalPos.xy,finalPos.z);}gl_Position=finalPos;v_tex=a_tex/u_texsize;vec2 fade_opacity=unpack_opacity(a_fade_opacity);float fade_change=fade_opacity[1] > 0.5 ? u_fade_change :-u_fade_change;float visibility=calculate_visibility(projectedPoint);v_fade_opacity=max(0.0,min(visibility,fade_opacity[0]+fade_change));}"),symbolSDF:xt("#define SDF_PX 8.0\nuniform bool u_is_halo;uniform sampler2D u_texture;uniform highp float u_gamma_scale;uniform lowp float u_device_pixel_ratio;uniform bool u_is_text;varying vec2 v_data0;varying vec3 v_data1;\n#pragma mapbox: define highp vec4 fill_color\n#pragma mapbox: define highp vec4 halo_color\n#pragma mapbox: define lowp float opacity\n#pragma mapbox: define lowp float halo_width\n#pragma mapbox: define lowp float halo_blur\nvoid main() {\n#pragma mapbox: initialize highp vec4 fill_color\n#pragma mapbox: initialize highp vec4 halo_color\n#pragma mapbox: initialize lowp float opacity\n#pragma mapbox: initialize lowp float halo_width\n#pragma mapbox: initialize lowp float halo_blur\nfloat EDGE_GAMMA=0.105/u_device_pixel_ratio;vec2 tex=v_data0.xy;float gamma_scale=v_data1.x;float size=v_data1.y;float fade_opacity=v_data1[2];float fontScale=u_is_text ? size/24.0 : size;lowp vec4 color=fill_color;highp float gamma=EDGE_GAMMA/(fontScale*u_gamma_scale);lowp float inner_edge=(256.0-64.0)/256.0;if (u_is_halo) {color=halo_color;gamma=(halo_blur*1.19/SDF_PX+EDGE_GAMMA)/(fontScale*u_gamma_scale);inner_edge=inner_edge+gamma*gamma_scale;}lowp float dist=texture2D(u_texture,tex).a;highp float gamma_scaled=gamma*gamma_scale;highp float alpha=smoothstep(inner_edge-gamma_scaled,inner_edge+gamma_scaled,dist);if (u_is_halo) {lowp float halo_edge=(6.0-halo_width/fontScale)/SDF_PX;alpha=min(smoothstep(halo_edge-gamma_scaled,halo_edge+gamma_scaled,dist),1.0-alpha);}gl_FragColor=color*(alpha*opacity*fade_opacity);\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","attribute vec4 a_pos_offset;attribute vec4 a_data;attribute vec4 a_pixeloffset;attribute vec3 a_projected_pos;attribute float a_fade_opacity;uniform bool u_is_size_zoom_constant;uniform bool u_is_size_feature_constant;uniform highp float u_size_t;uniform highp float u_size;uniform mat4 u_label_plane_matrix;uniform mat4 u_coord_matrix;uniform bool u_is_text;uniform bool u_pitch_with_map;uniform bool u_is_along_line;uniform bool u_is_variable_anchor;uniform highp float u_pitch;uniform bool u_rotate_symbol;uniform highp float u_aspect_ratio;uniform highp float u_camera_to_center_distance;uniform float u_fade_change;uniform vec2 u_texsize;uniform vec2 u_translation;uniform float u_pitched_scale;varying vec2 v_data0;varying vec3 v_data1;\n#pragma mapbox: define highp vec4 fill_color\n#pragma mapbox: define highp vec4 halo_color\n#pragma mapbox: define lowp float opacity\n#pragma mapbox: define lowp float halo_width\n#pragma mapbox: define lowp float halo_blur\nvoid main() {\n#pragma mapbox: initialize highp vec4 fill_color\n#pragma mapbox: initialize highp vec4 halo_color\n#pragma mapbox: initialize lowp float opacity\n#pragma mapbox: initialize lowp float halo_width\n#pragma mapbox: initialize lowp float halo_blur\nvec2 a_pos=a_pos_offset.xy;vec2 a_offset=a_pos_offset.zw;vec2 a_tex=a_data.xy;vec2 a_size=a_data.zw;float a_size_min=floor(a_size[0]*0.5);vec2 a_pxoffset=a_pixeloffset.xy;float ele=get_elevation(a_pos);highp float segment_angle=-a_projected_pos[2];float size;if (!u_is_size_zoom_constant && !u_is_size_feature_constant) {size=mix(a_size_min,a_size[1],u_size_t)/128.0;} else if (u_is_size_zoom_constant && !u_is_size_feature_constant) {size=a_size_min/128.0;} else {size=u_size;}vec2 translated_a_pos=a_pos+u_translation;vec4 projectedPoint=projectTileWithElevation(translated_a_pos,ele);highp float camera_to_anchor_distance=projectedPoint.w;highp float distance_ratio=u_pitch_with_map ?\ncamera_to_anchor_distance/u_camera_to_center_distance :\nu_camera_to_center_distance/camera_to_anchor_distance;highp float perspective_ratio=clamp(0.5+0.5*distance_ratio,0.0,4.0);size*=perspective_ratio;float fontScale=u_is_text ? size/24.0 : size;highp float symbol_rotation=0.0;if (u_rotate_symbol) {vec4 offsetProjectedPoint=projectTileWithElevation(translated_a_pos+vec2(1,0),ele);vec2 a=projectedPoint.xy/projectedPoint.w;vec2 b=offsetProjectedPoint.xy/offsetProjectedPoint.w;symbol_rotation=atan((b.y-a.y)/u_aspect_ratio,b.x-a.x);}highp float angle_sin=sin(segment_angle+symbol_rotation);highp float angle_cos=cos(segment_angle+symbol_rotation);mat2 rotation_matrix=mat2(angle_cos,-1.0*angle_sin,angle_sin,angle_cos);vec4 projected_pos;if (u_is_along_line || u_is_variable_anchor) {projected_pos=vec4(a_projected_pos.xy,ele,1.0);} else if (u_pitch_with_map) {projected_pos=u_label_plane_matrix*vec4(a_projected_pos.xy+u_translation,ele,1.0);} else {projected_pos=u_label_plane_matrix*projectTileWithElevation(a_projected_pos.xy+u_translation,ele);}float z=float(u_pitch_with_map)*projected_pos.z/projected_pos.w;float projectionScaling=1.0;\n#ifdef GLOBE\nif(u_pitch_with_map) {float anchor_pos_tile_y=(u_coord_matrix*vec4(projected_pos.xy/projected_pos.w,z,1.0)).y;projectionScaling=mix(projectionScaling,1.0/circumferenceRatioAtTileY(anchor_pos_tile_y)*u_pitched_scale,u_projection_transition);}\n#endif\nvec4 finalPos=u_coord_matrix*vec4(projected_pos.xy/projected_pos.w+rotation_matrix*(a_offset/32.0*fontScale+a_pxoffset)*projectionScaling,z,1.0);if(u_pitch_with_map) {finalPos=projectTileWithElevation(finalPos.xy,finalPos.z);}float gamma_scale=finalPos.w;gl_Position=finalPos;vec2 fade_opacity=unpack_opacity(a_fade_opacity);float visibility=calculate_visibility(projectedPoint);float fade_change=fade_opacity[1] > 0.5 ? u_fade_change :-u_fade_change;float interpolated_fade_opacity=max(0.0,min(visibility,fade_opacity[0]+fade_change));v_data0=a_tex/u_texsize;v_data1=vec3(gamma_scale,size,interpolated_fade_opacity);}"),symbolTextAndIcon:xt("#define SDF_PX 8.0\n#define SDF 1.0\n#define ICON 0.0\nuniform bool u_is_halo;uniform sampler2D u_texture;uniform sampler2D u_texture_icon;uniform highp float u_gamma_scale;uniform lowp float u_device_pixel_ratio;varying vec4 v_data0;varying vec4 v_data1;\n#pragma mapbox: define highp vec4 fill_color\n#pragma mapbox: define highp vec4 halo_color\n#pragma mapbox: define lowp float opacity\n#pragma mapbox: define lowp float halo_width\n#pragma mapbox: define lowp float halo_blur\nvoid main() {\n#pragma mapbox: initialize highp vec4 fill_color\n#pragma mapbox: initialize highp vec4 halo_color\n#pragma mapbox: initialize lowp float opacity\n#pragma mapbox: initialize lowp float halo_width\n#pragma mapbox: initialize lowp float halo_blur\nfloat fade_opacity=v_data1[2];if (v_data1.w==ICON) {vec2 tex_icon=v_data0.zw;lowp float alpha=opacity*fade_opacity;gl_FragColor=texture2D(u_texture_icon,tex_icon)*alpha;\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\nreturn;}vec2 tex=v_data0.xy;float EDGE_GAMMA=0.105/u_device_pixel_ratio;float gamma_scale=v_data1.x;float size=v_data1.y;float fontScale=size/24.0;lowp vec4 color=fill_color;highp float gamma=EDGE_GAMMA/(fontScale*u_gamma_scale);lowp float buff=(256.0-64.0)/256.0;if (u_is_halo) {color=halo_color;gamma=(halo_blur*1.19/SDF_PX+EDGE_GAMMA)/(fontScale*u_gamma_scale);buff=(6.0-halo_width/fontScale)/SDF_PX;}lowp float dist=texture2D(u_texture,tex).a;highp float gamma_scaled=gamma*gamma_scale;highp float alpha=smoothstep(buff-gamma_scaled,buff+gamma_scaled,dist);gl_FragColor=color*(alpha*opacity*fade_opacity);\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","attribute vec4 a_pos_offset;attribute vec4 a_data;attribute vec3 a_projected_pos;attribute float a_fade_opacity;uniform bool u_is_size_zoom_constant;uniform bool u_is_size_feature_constant;uniform highp float u_size_t;uniform highp float u_size;uniform mat4 u_label_plane_matrix;uniform mat4 u_coord_matrix;uniform bool u_is_text;uniform bool u_pitch_with_map;uniform highp float u_pitch;uniform bool u_rotate_symbol;uniform highp float u_aspect_ratio;uniform highp float u_camera_to_center_distance;uniform float u_fade_change;uniform vec2 u_texsize;uniform vec2 u_texsize_icon;uniform bool u_is_along_line;uniform bool u_is_variable_anchor;uniform vec2 u_translation;uniform float u_pitched_scale;varying vec4 v_data0;varying vec4 v_data1;\n#pragma mapbox: define highp vec4 fill_color\n#pragma mapbox: define highp vec4 halo_color\n#pragma mapbox: define lowp float opacity\n#pragma mapbox: define lowp float halo_width\n#pragma mapbox: define lowp float halo_blur\nvoid main() {\n#pragma mapbox: initialize highp vec4 fill_color\n#pragma mapbox: initialize highp vec4 halo_color\n#pragma mapbox: initialize lowp float opacity\n#pragma mapbox: initialize lowp float halo_width\n#pragma mapbox: initialize lowp float halo_blur\nvec2 a_pos=a_pos_offset.xy;vec2 a_offset=a_pos_offset.zw;vec2 a_tex=a_data.xy;vec2 a_size=a_data.zw;float a_size_min=floor(a_size[0]*0.5);float is_sdf=a_size[0]-2.0*a_size_min;float ele=get_elevation(a_pos);highp float segment_angle=-a_projected_pos[2];float size;if (!u_is_size_zoom_constant && !u_is_size_feature_constant) {size=mix(a_size_min,a_size[1],u_size_t)/128.0;} else if (u_is_size_zoom_constant && !u_is_size_feature_constant) {size=a_size_min/128.0;} else {size=u_size;}vec2 translated_a_pos=a_pos+u_translation;vec4 projectedPoint=projectTileWithElevation(translated_a_pos,ele);highp float camera_to_anchor_distance=projectedPoint.w;highp float distance_ratio=u_pitch_with_map ?\ncamera_to_anchor_distance/u_camera_to_center_distance :\nu_camera_to_center_distance/camera_to_anchor_distance;highp float perspective_ratio=clamp(0.5+0.5*distance_ratio,0.0,4.0);size*=perspective_ratio;float fontScale=size/24.0;highp float symbol_rotation=0.0;if (u_rotate_symbol) {vec4 offsetProjectedPoint=projectTileWithElevation(translated_a_pos+vec2(1,0),ele);vec2 a=projectedPoint.xy/projectedPoint.w;vec2 b=offsetProjectedPoint.xy/offsetProjectedPoint.w;symbol_rotation=atan((b.y-a.y)/u_aspect_ratio,b.x-a.x);}highp float angle_sin=sin(segment_angle+symbol_rotation);highp float angle_cos=cos(segment_angle+symbol_rotation);mat2 rotation_matrix=mat2(angle_cos,-1.0*angle_sin,angle_sin,angle_cos);vec4 projected_pos;if (u_is_along_line || u_is_variable_anchor) {projected_pos=vec4(a_projected_pos.xy,ele,1.0);} else if (u_pitch_with_map) {projected_pos=u_label_plane_matrix*vec4(a_projected_pos.xy+u_translation,ele,1.0);} else {projected_pos=u_label_plane_matrix*projectTileWithElevation(a_projected_pos.xy+u_translation,ele);}float z=float(u_pitch_with_map)*projected_pos.z/projected_pos.w;float projectionScaling=1.0;\n#ifdef GLOBE\nif(u_pitch_with_map && !u_is_along_line) {float anchor_pos_tile_y=(u_coord_matrix*vec4(projected_pos.xy/projected_pos.w,z,1.0)).y;projectionScaling=mix(projectionScaling,1.0/circumferenceRatioAtTileY(anchor_pos_tile_y)*u_pitched_scale,u_projection_transition);}\n#endif\nvec4 finalPos=u_coord_matrix*vec4(projected_pos.xy/projected_pos.w+rotation_matrix*(a_offset/32.0*fontScale)*projectionScaling,z,1.0);if(u_pitch_with_map) {finalPos=projectTileWithElevation(finalPos.xy,finalPos.z);}float gamma_scale=finalPos.w;gl_Position=finalPos;vec2 fade_opacity=unpack_opacity(a_fade_opacity);float visibility=calculate_visibility(projectedPoint);float fade_change=fade_opacity[1] > 0.5 ? u_fade_change :-u_fade_change;float interpolated_fade_opacity=max(0.0,min(visibility,fade_opacity[0]+fade_change));v_data0.xy=a_tex/u_texsize;v_data0.zw=a_tex/u_texsize_icon;v_data1=vec4(gamma_scale,size,interpolated_fade_opacity,is_sdf);}"),terrain:xt("uniform sampler2D u_texture;uniform vec4 u_fog_color;uniform vec4 u_horizon_color;uniform float u_fog_ground_blend;uniform float u_fog_ground_blend_opacity;uniform float u_horizon_fog_blend;uniform bool u_is_globe_mode;varying vec2 v_texture_pos;varying float v_fog_depth;const float gamma=2.2;vec4 gammaToLinear(vec4 color) {return pow(color,vec4(gamma));}vec4 linearToGamma(vec4 color) {return pow(color,vec4(1.0/gamma));}void main() {vec4 surface_color=texture2D(u_texture,vec2(v_texture_pos.x,1.0-v_texture_pos.y));if (!u_is_globe_mode && v_fog_depth > u_fog_ground_blend) {vec4 surface_color_linear=gammaToLinear(surface_color);float blend_color=smoothstep(0.0,1.0,max((v_fog_depth-u_horizon_fog_blend)/(1.0-u_horizon_fog_blend),0.0));vec4 fog_horizon_color_linear=mix(gammaToLinear(u_fog_color),gammaToLinear(u_horizon_color),blend_color);float factor_fog=max(v_fog_depth-u_fog_ground_blend,0.0)/(1.0-u_fog_ground_blend);gl_FragColor=linearToGamma(mix(surface_color_linear,fog_horizon_color_linear,pow(factor_fog,2.0)*u_fog_ground_blend_opacity));} else {gl_FragColor=surface_color;}}","attribute vec3 a_pos3d;uniform mat4 u_fog_matrix;uniform float u_ele_delta;varying vec2 v_texture_pos;varying float v_fog_depth;void main() {float ele=get_elevation(a_pos3d.xy);float ele_delta=a_pos3d.z==1.0 ? u_ele_delta : 0.0;v_texture_pos=a_pos3d.xy/8192.0;gl_Position=projectTileFor3D(a_pos3d.xy,get_elevation(a_pos3d.xy)-ele_delta);vec4 pos=u_fog_matrix*vec4(a_pos3d.xy,ele,1.0);v_fog_depth=pos.z/pos.w*0.5+0.5;}"),terrainDepth:xt("varying float v_depth;const highp vec4 bitSh=vec4(256.*256.*256.,256.*256.,256.,1.);const highp vec4 bitMsk=vec4(0.,vec3(1./256.0));highp vec4 pack(highp float value) {highp vec4 comp=fract(value*bitSh);comp-=comp.xxyz*bitMsk;return comp;}void main() {gl_FragColor=pack(v_depth);}","attribute vec3 a_pos3d;uniform float u_ele_delta;varying float v_depth;void main() {float ele=get_elevation(a_pos3d.xy);float ele_delta=a_pos3d.z==1.0 ? u_ele_delta : 0.0;gl_Position=projectTileFor3D(a_pos3d.xy,ele-ele_delta);v_depth=gl_Position.z/gl_Position.w;}"),terrainCoords:xt("precision mediump float;uniform sampler2D u_texture;uniform float u_terrain_coords_id;varying vec2 v_texture_pos;void main() {vec4 rgba=texture2D(u_texture,v_texture_pos);gl_FragColor=vec4(rgba.r,rgba.g,rgba.b,u_terrain_coords_id);}","attribute vec3 a_pos3d;uniform float u_ele_delta;varying vec2 v_texture_pos;void main() {float ele=get_elevation(a_pos3d.xy);float ele_delta=a_pos3d.z==1.0 ? u_ele_delta : 0.0;v_texture_pos=a_pos3d.xy/8192.0;gl_Position=projectTileFor3D(a_pos3d.xy,ele-ele_delta);}"),projectionErrorMeasurement:xt("varying vec4 v_output_error_encoded;void main() {gl_FragColor=v_output_error_encoded;}","attribute vec2 a_pos;uniform highp float u_input;uniform highp float u_output_expected;varying vec4 v_output_error_encoded;void main() {float real_output=2.0*atan(exp(PI-(u_input*PI*2.0)))-PI*0.5;float error=real_output-u_output_expected;float abs_error=abs(error)*128.0;v_output_error_encoded.x=min(floor(abs_error*256.0),255.0)/255.0;abs_error-=v_output_error_encoded.x;v_output_error_encoded.y=min(floor(abs_error*65536.0),255.0)/255.0;abs_error-=v_output_error_encoded.x/255.0;v_output_error_encoded.z=min(floor(abs_error*16777216.0),255.0)/255.0;v_output_error_encoded.w=error >=0.0 ? 1.0 : 0.0;gl_Position=vec4(a_pos,0.0,1.0);}"),atmosphere:xt("varying vec3 view_direction;uniform vec3 u_sun_pos;uniform vec3 u_globe_position;uniform float u_globe_radius;uniform float u_atmosphere_blend;/**Shader use from https:*Made some change to adapt to MapLibre Globe geometry*/const float PI=3.141592653589793;const int iSteps=5;const int jSteps=3;/*radius of the planet*/const float EARTH_RADIUS=6371e3;/*radius of the atmosphere*/const float ATMOS_RADIUS=6471e3;vec2 rsi(vec3 r0,vec3 rd,float sr) {float a=dot(rd,rd);float b=2.0*dot(rd,r0);float c=dot(r0,r0)-(sr*sr);float d=(b*b)-4.0*a*c;if (d < 0.0) return vec2(1e5,-1e5);return vec2((-b-sqrt(d))/(2.0*a),(-b+sqrt(d))/(2.0*a));}vec4 atmosphere(vec3 r,vec3 r0,vec3 pSun,float iSun,float rPlanet,float rAtmos,vec3 kRlh,float kMie,float shRlh,float shMie,float g) {pSun=normalize(pSun);r=normalize(r);vec2 p=rsi(r0,r,rAtmos);if (p.x > p.y) return vec4(0,0,0,0);if (p.x < 0.0) {p.x=0.0;}vec3 pos=r0+r*p.x;vec2 p2=rsi(r0,r,rPlanet);if (p2.x <=p2.y && p2.x > 0.0) {p.y=min(p.y,p2.x);}float iStepSize=(p.y-p.x)/float(iSteps);float iTime=p.x+iStepSize*0.5;vec3 totalRlh=vec3(0,0,0);vec3 totalMie=vec3(0,0,0);float iOdRlh=0.0;float iOdMie=0.0;float mu=dot(r,pSun);float mumu=mu*mu;float gg=g*g;float pRlh=3.0/(16.0*PI)*(1.0+mumu);float pMie=3.0/(8.0*PI)*((1.0-gg)*(mumu+1.0))/(pow(1.0+gg-2.0*mu*g,1.5)*(2.0+gg));for (int i=0; i < iSteps; i++) {vec3 iPos=r0+r*iTime;float iHeight=length(iPos)-rPlanet;float odStepRlh=exp(-iHeight/shRlh)*iStepSize;float odStepMie=exp(-iHeight/shMie)*iStepSize;iOdRlh+=odStepRlh;iOdMie+=odStepMie;float jStepSize=rsi(iPos,pSun,rAtmos).y/float(jSteps);float jTime=jStepSize*0.5;float jOdRlh=0.0;float jOdMie=0.0;for (int j=0; j < jSteps; j++) {vec3 jPos=iPos+pSun*jTime;float jHeight=length(jPos)-rPlanet;jOdRlh+=exp(-jHeight/shRlh)*jStepSize;jOdMie+=exp(-jHeight/shMie)*jStepSize;jTime+=jStepSize;}vec3 attn=exp(-(kMie*(iOdMie+jOdMie)+kRlh*(iOdRlh+jOdRlh)));totalRlh+=odStepRlh*attn;totalMie+=odStepMie*attn;iTime+=iStepSize;}float opacity=min(0.75,exp(-(length(kRlh)*length(totalRlh)+kMie*length(totalMie))));vec3 color=iSun*(pRlh*kRlh*totalRlh+pMie*kMie*totalMie);return vec4(color,opacity);}void main() {vec3 scale_camera_pos=-u_globe_position*EARTH_RADIUS/u_globe_radius;vec4 color=atmosphere(normalize(view_direction),scale_camera_pos,u_sun_pos,22.0,EARTH_RADIUS,ATMOS_RADIUS,vec3(5.5e-6,13.0e-6,22.4e-6),21e-6,8e3,1.2e3,0.758\n);color.xyz=1.0-exp(-1.0*color.xyz);vec4 no_effect_color=vec4(0,0,0,0);gl_FragColor=mix(color,no_effect_color,1.0-u_atmosphere_blend);}","attribute vec2 a_pos;uniform mat4 u_inv_proj_matrix;varying vec3 view_direction;void main() {view_direction=(u_inv_proj_matrix*vec4(a_pos,0.0,1.0)).xyz;gl_Position=vec4(a_pos,0.0,1.0);}"),sky:xt("uniform vec4 u_sky_color;uniform vec4 u_horizon_color;uniform vec2 u_horizon;uniform vec2 u_horizon_normal;uniform float u_sky_horizon_blend;uniform float u_sky_blend;void main() {float x=gl_FragCoord.x;float y=gl_FragCoord.y;float blend=(y-u_horizon.y)*u_horizon_normal.y+(x-u_horizon.x)*u_horizon_normal.x;if (blend > 0.0) {if (blend < u_sky_horizon_blend) {gl_FragColor=mix(u_sky_color,u_horizon_color,pow(1.0-blend/u_sky_horizon_blend,2.0));} else {gl_FragColor=u_sky_color;}}gl_FragColor=mix(gl_FragColor,vec4(vec3(0.0),0.0),u_sky_blend);}","attribute vec2 a_pos;void main() {gl_Position=vec4(a_pos,1.0,1.0);}")};function xt(e,t){const i=/#pragma mapbox: ([\w]+) ([\w]+) ([\w]+) ([\w]+)/g,r=t.match(/attribute ([\w]+) ([\w]+)/g),o=e.match(/uniform ([\w]+) ([\w]+)([\s]*)([\w]*)/g),a=t.match(/uniform ([\w]+) ([\w]+)([\s]*)([\w]*)/g),s=a?a.concat(o):o,n={};return {fragmentSource:e=e.replace(i,((e,t,i,r,o)=>(n[o]=!0,"define"===t?`\n#ifndef HAS_UNIFORM_u_${o}\nvarying ${i} ${r} ${o};\n#else\nuniform ${i} ${r} u_${o};\n#endif\n`:`\n#ifdef HAS_UNIFORM_u_${o}\n ${i} ${r} ${o} = u_${o};\n#endif\n`))),vertexSource:t=t.replace(i,((e,t,i,r,o)=>{const a="float"===r?"vec2":"vec4",s=o.match(/color/)?"color":a;return n[o]?"define"===t?`\n#ifndef HAS_UNIFORM_u_${o}\nuniform lowp float u_${o}_t;\nattribute ${i} ${a} a_${o};\nvarying ${i} ${r} ${o};\n#else\nuniform ${i} ${r} u_${o};\n#endif\n`:"vec4"===s?`\n#ifndef HAS_UNIFORM_u_${o}\n ${o} = a_${o};\n#else\n ${i} ${r} ${o} = u_${o};\n#endif\n`:`\n#ifndef HAS_UNIFORM_u_${o}\n ${o} = unpack_mix_${s}(a_${o}, u_${o}_t);\n#else\n ${i} ${r} ${o} = u_${o};\n#endif\n`:"define"===t?`\n#ifndef HAS_UNIFORM_u_${o}\nuniform lowp float u_${o}_t;\nattribute ${i} ${a} a_${o};\n#else\nuniform ${i} ${r} u_${o};\n#endif\n`:"vec4"===s?`\n#ifndef HAS_UNIFORM_u_${o}\n ${i} ${r} ${o} = a_${o};\n#else\n ${i} ${r} ${o} = u_${o};\n#endif\n`:`\n#ifndef HAS_UNIFORM_u_${o}\n ${i} ${r} ${o} = unpack_mix_${s}(a_${o}, u_${o}_t);\n#else\n ${i} ${r} ${o} = u_${o};\n#endif\n`})),staticAttributes:r,staticUniforms:s}}class bt{constructor(e,t,i){this.vertexBuffer=e,this.indexBuffer=t,this.segments=i;}destroy(){this.vertexBuffer.destroy(),this.indexBuffer.destroy(),this.segments.destroy(),this.vertexBuffer=null,this.indexBuffer=null,this.segments=null;}}var wt=t.createLayout([{name:"a_pos",type:"Int16",components:2}]);const Tt="#define PROJECTION_MERCATOR",Et="mercator";class Pt{constructor(){this._cachedMesh=null;}get name(){return "mercator"}get useSubdivision(){return !1}get shaderVariantName(){return Et}get shaderDefine(){return Tt}get shaderPreludeCode(){return yt.projectionMercator}get vertexShaderPreludeCode(){return yt.projectionMercator.vertexSource}get subdivisionGranularity(){return t.SubdivisionGranularitySetting.noSubdivision}get useGlobeControls(){return !1}destroy(){}isRenderingDirty(){return !1}updateGPUdependent(e){}getMeshFromTileID(e,i,r,o,a){if(this._cachedMesh)return this._cachedMesh;const s=new t.PosArray;s.emplaceBack(0,0),s.emplaceBack(t.EXTENT,0),s.emplaceBack(0,t.EXTENT),s.emplaceBack(t.EXTENT,t.EXTENT);const n=e.createVertexBuffer(s,wt.members),l=t.SegmentVector.simpleSegment(0,0,4,2),c=new t.TriangleIndexArray;c.emplaceBack(1,0,2),c.emplaceBack(1,2,3);const h=e.createIndexBuffer(c);return this._cachedMesh=new bt(n,h,l),this._cachedMesh}}function It(e){return t.MercatorCoordinate.fromLngLat(e)}function Ct(e){return e&&e.toLngLat()}function Mt(e,i){const r=t.clamp(i.lat,-85.051129,ce);return new t.Point(t.mercatorXfromLng(i.lng)*e,t.mercatorYfromLat(r)*e)}function St(e,i){return new t.MercatorCoordinate(i.x/e,i.y/e).toLngLat()}function Rt(e){return e.cameraToCenterDistance*Math.min(.85*Math.tan(t.degreesToRadians(90-e.pitch)),Math.tan(t.degreesToRadians(89.25-e.pitch)))}function Dt(e,i){const r=e.canonical,o=i/ue(r.z),a=r.x+Math.pow(2,r.z)*e.wrap,s=t.identity(new Float64Array(16));return t.translate(s,s,[a*o,r.y*o,0]),t.scale(s,s,[o/t.EXTENT,o/t.EXTENT,1]),s}function zt(e,i,r,o,a){const s=t.MercatorCoordinate.fromLngLat(e,i),n=a*t.mercatorZfromAltitude(1,e.lat),l=n*Math.cos(t.degreesToRadians(r)),c=Math.sqrt(n*n-l*l),h=c*Math.sin(t.degreesToRadians(-o)),u=c*Math.cos(t.degreesToRadians(-o));return new t.MercatorCoordinate(s.x+h,s.y+u,s.z+l)}class Lt{constructor(e,i){this.min=e,this.max=i,this.center=t.scale$2([],t.add([],this.min,this.max),.5);}quadrant(e){const i=[e%2==0,e<2],r=t.clone(this.min),o=t.clone(this.max);for(let e=0;ethis.max[0]||e.aabb.min[1]>this.max[1]||e.aabb.min[2]>this.max[2]||e.aabb.max[0]0?(t+=e[r]*this.min[r],i+=e[r]*this.max[r]):(i+=e[r]*this.min[r],t+=e[r]*this.max[r]);return t>=0?2:i<0?0:1}}class At{distanceToTile2d(e,t,i,r){const o=r.distanceX([e,t]),a=r.distanceY([e,t]);return Math.hypot(o,a)}getWrap(e,t,i){return i}getTileAABB(e,i,r,o){var a,s;let n=r,l=r;if(o.terrain){const c=new t.OverscaledTileID(e.z,i,e.z,e.x,e.y),h=o.terrain.getMinMaxElevation(c);n=null!==(a=h.minElevation)&&void 0!==a?a:r,l=null!==(s=h.maxElevation)&&void 0!==s?s:r;}const c=1<o||e.padding.top>=.1}allowWorldCopies(){return !0}}class kt{constructor(e,t,i){this.points=e,this.planes=t,this.aabb=i;}static fromInvProjectionMatrix(e,i=1,r=0){const o=Math.pow(2,r),a=[[-1,1,-1,1],[1,1,-1,1],[1,-1,-1,1],[-1,-1,-1,1],[-1,1,1,1],[1,1,1,1],[1,-1,1,1],[-1,-1,1,1]].map((r=>{const a=1/(r=t.transformMat4([],r,e))[3]/i*o;return t.mul(r,r,[a,a,1/r[3],a])})),s=[[0,1,2],[6,5,4],[0,3,7],[2,1,5],[3,2,6],[0,4,5]].map((e=>{const i=t.sub([],a[e[0]],a[e[1]]),r=t.sub([],a[e[2]],a[e[1]]),o=t.normalize([],t.cross([],i,r)),s=-t.dot(o,a[e[1]]);return o.concat(s)})),n=[Number.POSITIVE_INFINITY,Number.POSITIVE_INFINITY,Number.POSITIVE_INFINITY],l=[Number.NEGATIVE_INFINITY,Number.NEGATIVE_INFINITY,Number.NEGATIVE_INFINITY];for(const e of a)for(let t=0;t<3;t++)n[t]=Math.min(n[t],e[t]),l[t]=Math.max(l[t],e[t]);return new kt(a,s,new Lt(n,l))}}class Ft{get pixelsToClipSpaceMatrix(){return this._helper.pixelsToClipSpaceMatrix}get clipSpaceToPixelsMatrix(){return this._helper.clipSpaceToPixelsMatrix}get pixelsToGLUnits(){return this._helper.pixelsToGLUnits}get centerOffset(){return this._helper.centerOffset}get size(){return this._helper.size}get rotationMatrix(){return this._helper.rotationMatrix}get centerPoint(){return this._helper.centerPoint}get pixelsPerMeter(){return this._helper.pixelsPerMeter}setMinZoom(e){this._helper.setMinZoom(e);}setMaxZoom(e){this._helper.setMaxZoom(e);}setMinPitch(e){this._helper.setMinPitch(e);}setMaxPitch(e){this._helper.setMaxPitch(e);}setRenderWorldCopies(e){this._helper.setRenderWorldCopies(e);}setBearing(e){this._helper.setBearing(e);}setPitch(e){this._helper.setPitch(e);}setRoll(e){this._helper.setRoll(e);}setFov(e){this._helper.setFov(e);}setZoom(e){this._helper.setZoom(e);}setCenter(e){this._helper.setCenter(e);}setElevation(e){this._helper.setElevation(e);}setMinElevationForCurrentTile(e){this._helper.setMinElevationForCurrentTile(e);}setPadding(e){this._helper.setPadding(e);}interpolatePadding(e,t,i){return this._helper.interpolatePadding(e,t,i)}isPaddingEqual(e){return this._helper.isPaddingEqual(e)}resize(e,t){this._helper.resize(e,t);}getMaxBounds(){return this._helper.getMaxBounds()}setMaxBounds(e){this._helper.setMaxBounds(e);}getCameraQueryGeometry(e){return this._helper.getCameraQueryGeometry(this.getCameraPoint(),e)}get tileSize(){return this._helper.tileSize}get tileZoom(){return this._helper.tileZoom}get scale(){return this._helper.scale}get worldSize(){return this._helper.worldSize}get width(){return this._helper.width}get height(){return this._helper.height}get lngRange(){return this._helper.lngRange}get latRange(){return this._helper.latRange}get minZoom(){return this._helper.minZoom}get maxZoom(){return this._helper.maxZoom}get zoom(){return this._helper.zoom}get center(){return this._helper.center}get minPitch(){return this._helper.minPitch}get maxPitch(){return this._helper.maxPitch}get pitch(){return this._helper.pitch}get pitchInRadians(){return this._helper.pitchInRadians}get roll(){return this._helper.roll}get rollInRadians(){return this._helper.rollInRadians}get bearing(){return this._helper.bearing}get bearingInRadians(){return this._helper.bearingInRadians}get fov(){return this._helper.fov}get fovInRadians(){return this._helper.fovInRadians}get elevation(){return this._helper.elevation}get minElevationForCurrentTile(){return this._helper.minElevationForCurrentTile}get padding(){return this._helper.padding}get unmodified(){return this._helper.unmodified}get renderWorldCopies(){return this._helper.renderWorldCopies}constructor(e,t,i,r,o){this._posMatrixCache=new Map,this._alignedPosMatrixCache=new Map,this._fogMatrixCacheF32=new Map,this._helper=new pe({calcMatrices:()=>{this._calcMatrices();},getConstrained:(e,t)=>this.getConstrained(e,t)},e,t,i,r,o),this._coveringTilesDetailsProvider=new At;}clone(){const e=new Ft;return e.apply(this),e}apply(e,t){this._helper.apply(e,t);}get cameraToCenterDistance(){return this._cameraToCenterDistance}get cameraPosition(){return this._cameraPosition}get projectionMatrix(){return this._projectionMatrix}get modelViewProjectionMatrix(){return this._viewProjMatrix}get inverseProjectionMatrix(){return this._invProjMatrix}get nearZ(){return this._nearZ}get farZ(){return this._farZ}get mercatorMatrix(){return this._mercatorMatrix}getVisibleUnwrappedCoordinates(e){const i=[new t.UnwrappedTileID(0,e)];if(this._helper._renderWorldCopies){const r=this.screenPointToMercatorCoordinate(new t.Point(0,0)),o=this.screenPointToMercatorCoordinate(new t.Point(this._helper._width,0)),a=this.screenPointToMercatorCoordinate(new t.Point(this._helper._width,this._helper._height)),s=this.screenPointToMercatorCoordinate(new t.Point(0,this._helper._height)),n=Math.floor(Math.min(r.x,o.x,a.x,s.x)),l=Math.floor(Math.max(r.x,o.x,a.x,s.x)),c=1;for(let r=n-c;r<=l+c;r++)0!==r&&i.push(new t.UnwrappedTileID(r,e));}return i}getCameraFrustum(){return kt.fromInvProjectionMatrix(this._invViewProjMatrix,this.worldSize)}getClippingPlane(){return null}getCoveringTilesDetailsProvider(){return this._coveringTilesDetailsProvider}recalculateZoomAndCenter(e){const i=this.screenPointToLocation(this.centerPoint,e),r=e?e.getElevationForLngLatZoom(i,this._helper._tileZoom):0;if(!(this.elevation-r))return;const o=t.mercatorZfromAltitude(1,this.center.lat)*this.worldSize,a=this._cameraToCenterDistance/o,s=t.MercatorCoordinate.fromLngLat(this.center,this.elevation),n=zt(this.center,this.elevation,this.pitch,this.bearing,a);this._helper._elevation=r;const l=this.calculateCenterFromCameraLngLatAlt(n.toLngLat(),t.altitudeFromMercatorZ(n.z,s.y),this.bearing,this.pitch);this._helper._elevation=l.elevation,this._helper._center=l.center,this.setZoom(l.zoom);}setLocationAtPoint(e,i){const r=t.mercatorZfromAltitude(this.elevation,this.center.lat),o=this.screenPointToMercatorCoordinateAtZ(i,r),a=this.screenPointToMercatorCoordinateAtZ(this.centerPoint,r),s=It(e),n=new t.MercatorCoordinate(s.x-(o.x-a.x),s.y-(o.y-a.y));this.setCenter(Ct(n)),this._helper._renderWorldCopies&&this.setCenter(this.center.wrap());}locationToScreenPoint(e,t){return t?this.coordinatePoint(It(e),t.getElevationForLngLatZoom(e,this._helper._tileZoom),this._pixelMatrix3D):this.coordinatePoint(It(e))}screenPointToLocation(e,t){return Ct(this.screenPointToMercatorCoordinate(e,t))}screenPointToMercatorCoordinate(e,t){if(t){const i=t.pointCoordinate(e);if(null!=i)return i}return this.screenPointToMercatorCoordinateAtZ(e)}screenPointToMercatorCoordinateAtZ(e,i){const r=i||0,o=[e.x,e.y,0,1],a=[e.x,e.y,1,1];t.transformMat4(o,o,this._pixelMatrixInverse),t.transformMat4(a,a,this._pixelMatrixInverse);const s=o[3],n=a[3],l=o[1]/s,c=a[1]/n,h=o[2]/s,u=a[2]/n,d=h===u?0:(r-h)/(u-h);return new t.MercatorCoordinate(t.interpolateFactory.number(o[0]/s,a[0]/n,d)/this.worldSize,t.interpolateFactory.number(l,c,d)/this.worldSize,r)}coordinatePoint(e,i=0,r=this._pixelMatrix){const o=[e.x*this.worldSize,e.y*this.worldSize,i,1];return t.transformMat4(o,o,r),new t.Point(o[0]/o[3],o[1]/o[3])}getBounds(){const e=Math.max(0,this._helper._height/2-Rt(this));return (new V).extend(this.screenPointToLocation(new t.Point(0,e))).extend(this.screenPointToLocation(new t.Point(this._helper._width,e))).extend(this.screenPointToLocation(new t.Point(this._helper._width,this._helper._height))).extend(this.screenPointToLocation(new t.Point(0,this._helper._height)))}isPointOnMapSurface(e,t){return t?null!=t.pointCoordinate(e):e.y>this.height/2-Rt(this)}calculatePosMatrix(e,i=!1,r){var o;const a=null!==(o=e.key)&&void 0!==o?o:t.calculateTileKey(e.wrap,e.canonical.z,e.canonical.z,e.canonical.x,e.canonical.y),s=i?this._alignedPosMatrixCache:this._posMatrixCache;if(s.has(a)){const e=s.get(a);return r?e.f32:e.f64}const n=Dt(e,this.worldSize);t.multiply(n,i?this._alignedProjMatrix:this._viewProjMatrix,n);const l={f64:n,f32:new Float32Array(n)};return s.set(a,l),r?l.f32:l.f64}calculateFogMatrix(e){const i=e.key,r=this._fogMatrixCacheF32;if(r.has(i))return r.get(i);const o=Dt(e,this.worldSize);return t.multiply(o,this._fogMatrix,o),r.set(i,new Float32Array(o)),r.get(i)}getConstrained(e,i){i=t.clamp(+i,this.minZoom,this.maxZoom);const r={center:new t.LngLat(e.lng,e.lat),zoom:i};let o=this._helper._lngRange;if(!this._helper._renderWorldCopies&&null===o){const e=180-1e-10;o=[-e,e];}const a=this.tileSize*ue(r.zoom);let s=0,n=a,l=0,c=a,h=0,u=0;const{x:d,y:_}=this.size;if(this._helper._latRange){const e=this._helper._latRange;s=t.mercatorYfromLat(e[1])*a,n=t.mercatorYfromLat(e[0])*a,n-s<_&&(h=_/(n-s));}o&&(l=t.wrap(t.mercatorXfromLng(o[0])*a,0,a),c=t.wrap(t.mercatorXfromLng(o[1])*a,0,a),cn&&(g=n-e);}if(o){const e=(l+c)/2;let i=p;this._helper._renderWorldCopies&&(i=t.wrap(p,e-a/2,e+a/2));const r=d/2;i-rc&&(f=c-r);}if(void 0!==f||void 0!==g){const e=new t.Point(null!=f?f:p,null!=g?g:m);r.center=St(a,e).wrap();}return r}calculateCenterFromCameraLngLatAlt(e,i,r,o){const a=void 0!==r?r:this.bearing,s=o=void 0!==o?o:this.pitch,n=t.MercatorCoordinate.fromLngLat(e,i),l=-Math.cos(t.degreesToRadians(s)),c=Math.sin(t.degreesToRadians(s)),h=c*Math.sin(t.degreesToRadians(a)),u=-c*Math.cos(t.degreesToRadians(a));let d=this.elevation;const _=i-d;let p;l*_>=0||Math.abs(l)<.1?(p=1e4,d=i+p*l):p=-_/l;let m,f,g=t.altitudeFromMercatorZ(1,n.y),v=0;do{if(v+=1,v>10)break;f=p/g,m=new t.MercatorCoordinate(n.x+h*f,n.y+u*f),g=1/m.meterInMercatorCoordinateUnits();}while(Math.abs(p-f*g)>1e-12);return {center:m.toLngLat(),elevation:d,zoom:de(this.height/2/Math.tan(this.fovInRadians/2)/f/this.tileSize)}}_calcMatrices(){if(!this._helper._height)return;const e=this.fovInRadians/2,i=this.centerOffset,r=Mt(this.worldSize,this.center),o=r.x,a=r.y;this._cameraToCenterDistance=.5/Math.tan(e)*this._helper._height,this._helper._pixelPerMeter=t.mercatorZfromAltitude(1,this.center.lat)*this.worldSize;const s=t.degreesToRadians(Math.min(this.pitch,89.25)),n=Math.max(this._cameraToCenterDistance/2,this._cameraToCenterDistance+this._helper._elevation*this._helper._pixelPerMeter/Math.cos(s)),l=Math.min(this.elevation,this.minElevationForCurrentTile,this.getCameraAltitude()-100),c=n-l*this._helper._pixelPerMeter/Math.cos(s),h=l<0?c:n,u=Math.PI/2+this.pitchInRadians,d=t.degreesToRadians(this.fov)*(Math.abs(Math.cos(t.degreesToRadians(this.roll)))*this.height+Math.abs(Math.sin(t.degreesToRadians(this.roll)))*this.width)/this.height*(.5+i.y/this.height),_=Math.sin(d)*h/Math.sin(t.clamp(Math.PI-u-d,.01,Math.PI-.01)),p=Rt(this),m=Math.atan(p/this._cameraToCenterDistance),f=t.degreesToRadians(.75),g=m>f?2*m*(.5+i.y/(2*p)):f,v=Math.sin(g)*h/Math.sin(t.clamp(Math.PI-u-g,.01,Math.PI-.01)),y=Math.min(_,v);let x;this._farZ=1.01*(Math.cos(Math.PI/2-s)*y+h),this._nearZ=this._helper._height/50,x=new Float64Array(16),t.perspective(x,this.fovInRadians,this._helper._width/this._helper._height,this._nearZ,this._farZ),this._invProjMatrix=new Float64Array(16),t.invert(this._invProjMatrix,x),x[8]=2*-i.x/this._helper._width,x[9]=2*i.y/this._helper._height,this._projectionMatrix=t.clone$1(x),t.scale(x,x,[1,-1,1]),t.translate(x,x,[0,0,-this._cameraToCenterDistance]),t.rotateZ(x,x,-this.rollInRadians),t.rotateX(x,x,this.pitchInRadians),t.rotateZ(x,x,-this.bearingInRadians),t.translate(x,x,[-o,-a,0]),this._mercatorMatrix=t.scale([],x,[this.worldSize,this.worldSize,this.worldSize]),t.scale(x,x,[1,1,this._helper._pixelPerMeter]),this._pixelMatrix=t.multiply(new Float64Array(16),this.clipSpaceToPixelsMatrix,x),t.translate(x,x,[0,0,-this.elevation]),this._viewProjMatrix=x,this._invViewProjMatrix=t.invert([],x);const b=[0,0,-1,1];t.transformMat4(b,b,this._invViewProjMatrix),this._cameraPosition=[b[0]/b[3],b[1]/b[3],b[2]/b[3]],this._fogMatrix=new Float64Array(16),t.perspective(this._fogMatrix,this.fovInRadians,this.width/this.height,n,this._farZ),this._fogMatrix[8]=2*-i.x/this.width,this._fogMatrix[9]=2*i.y/this.height,t.scale(this._fogMatrix,this._fogMatrix,[1,-1,1]),t.translate(this._fogMatrix,this._fogMatrix,[0,0,-this.cameraToCenterDistance]),t.rotateZ(this._fogMatrix,this._fogMatrix,-this.rollInRadians),t.rotateX(this._fogMatrix,this._fogMatrix,this.pitchInRadians),t.rotateZ(this._fogMatrix,this._fogMatrix,-this.bearingInRadians),t.translate(this._fogMatrix,this._fogMatrix,[-o,-a,0]),t.scale(this._fogMatrix,this._fogMatrix,[1,1,this._helper._pixelPerMeter]),t.translate(this._fogMatrix,this._fogMatrix,[0,0,-this.elevation]),this._pixelMatrix3D=t.multiply(new Float64Array(16),this.clipSpaceToPixelsMatrix,x);const w=this._helper._width%2/2,T=this._helper._height%2/2,E=Math.cos(this.bearingInRadians),P=Math.sin(-this.bearingInRadians),I=o-Math.round(o)+E*w+P*T,C=a-Math.round(a)+E*T+P*w,M=new Float64Array(x);if(t.translate(M,M,[I>.5?I-1:I,C>.5?C-1:C,0]),this._alignedProjMatrix=M,x=t.invert(new Float64Array(16),this._pixelMatrix),!x)throw new Error("failed to invert matrix");this._pixelMatrixInverse=x,this._clearMatrixCaches();}_clearMatrixCaches(){this._posMatrixCache.clear(),this._alignedPosMatrixCache.clear(),this._fogMatrixCacheF32.clear();}maxPitchScaleFactor(){if(!this._pixelMatrixInverse)return 1;const e=this.screenPointToMercatorCoordinate(new t.Point(0,0)),i=[e.x*this.worldSize,e.y*this.worldSize,0,1];return t.transformMat4(i,i,this._pixelMatrix)[3]/this._cameraToCenterDistance}getCameraPoint(){const e=Math.tan(this.pitchInRadians)*(this._cameraToCenterDistance||1);return this.centerPoint.add(new t.Point(e*Math.sin(this.rollInRadians),e*Math.cos(this.rollInRadians)))}getCameraAltitude(){return Math.cos(this.pitchInRadians)*this._cameraToCenterDistance/this._helper._pixelPerMeter+this.elevation}getCameraLngLat(){const e=.5/Math.tan(this.fovInRadians/2)*this.height,i=t.mercatorZfromAltitude(1,this.center.lat)*this.worldSize;return zt(this.center,this.elevation,this.pitch,this.bearing,e/i).toLngLat()}lngLatToCameraDepth(e,i){const r=It(e),o=[r.x*this.worldSize,r.y*this.worldSize,i,1];return t.transformMat4(o,o,this._viewProjMatrix),o[2]/o[3]}isRenderingDirty(){return !1}getProjectionData(e){const{overscaledTileID:i,aligned:r,applyTerrainMatrix:o}=e;return function(e,i,r=!0){let o,a;if(e){const i=e.canonical.z>=0?1<{if(c&&e.setZoom(t.interpolateFactory.number(r,p,n)),t.rollPitchBearingEqual(a,s)||Ot({startEulerAngles:a,endEulerAngles:s,tr:e,k:n,useSlerp:a.roll!=s.roll}),l&&(e.interpolatePadding(o,i.padding,n),u=e.centerPoint.add(i.offsetAsPoint)),i.around)e.setLocationAtPoint(i.around,i.aroundPoint);else {const t=ue(e.zoom-r),i=p>r?Math.min(2,g):Math.max(.5,g),o=Math.pow(i,1-n),a=St(e.worldSize,m.add(f.mult(n*o)).mult(t));e.setLocationAtPoint(e.renderWorldCopies?a.wrap():a,u);}},isZooming:c,elevationCenter:_}}handleFlyTo(e,i){const r=void 0!==i.zoom,o=e.zoom,a=e.getConstrained(t.LngLat.convert(i.center||i.locationAtOffset),r?+i.zoom:o),s=a.center,n=a.zoom;he(e,s);const l=Mt(e.worldSize,i.locationAtOffset),c=Mt(e.worldSize,s).sub(l),h=c.mag(),u=ue(n-o);let d;if(void 0!==i.minZoom){const t=Math.min(+i.minZoom,o,n);d=ue(e.getConstrained(s,t).zoom-o);}return {easeFunc:(t,i,r,a)=>{e.setZoom(1===t?n:o+de(i));const h=1===t?s:St(e.worldSize,l.add(c.mult(r)).mult(i));e.setLocationAtPoint(e.renderWorldCopies?h.wrap():h,a);},scaleOfZoom:u,targetCenter:s,scaleOfMinZoom:d,pixelPathLength:h}}}class jt{constructor(e,t,i){this.blendFunction=e,this.blendColor=t,this.mask=i;}}jt.Replace=[1,0],jt.disabled=new jt(jt.Replace,t.Color.transparent,[!1,!1,!1,!1]),jt.unblended=new jt(jt.Replace,t.Color.transparent,[!0,!0,!0,!0]),jt.alphaBlended=new jt([1,771],t.Color.transparent,[!0,!0,!0,!0]);const Nt=2305;class Gt{constructor(e,t,i){this.enable=e,this.mode=t,this.frontFace=i;}}Gt.disabled=new Gt(!1,1029,Nt),Gt.backCCW=new Gt(!0,1029,Nt),Gt.frontCCW=new Gt(!0,1028,Nt);class Zt{constructor(e,t,i){this.func=e,this.mask=t,this.range=i;}}Zt.ReadOnly=!1,Zt.ReadWrite=!0,Zt.disabled=new Zt(519,Zt.ReadOnly,[0,1]);const Vt=7680;class qt{constructor(e,t,i,r,o,a){this.test=e,this.ref=t,this.mask=i,this.fail=r,this.depthFail=o,this.pass=a;}}qt.disabled=new qt({func:519,mask:0},0,0,Vt,Vt,Vt);const Wt=new WeakMap;function Xt(e){var t;if(Wt.has(e))return Wt.get(e);{const i=null===(t=e.getParameter(e.VERSION))||void 0===t?void 0:t.startsWith("WebGL 2.0");return Wt.set(e,i),i}}class $t{get awaitingQuery(){return !!this._readbackQueue}constructor(e){this._readbackWaitFrames=4,this._measureWaitFrames=6,this._texWidth=1,this._texHeight=1,this._measuredError=0,this._updateCount=0,this._lastReadbackFrame=-1e3,this._readbackQueue=null,this._cachedRenderContext=e;const i=e.context,r=i.gl;this._texFormat=r.RGBA,this._texType=r.UNSIGNED_BYTE;const o=new t.PosArray;o.emplaceBack(-1,-1),o.emplaceBack(2,-1),o.emplaceBack(-1,2);const a=new t.TriangleIndexArray;a.emplaceBack(0,1,2),this._fullscreenTriangle=new bt(i.createVertexBuffer(o,wt.members),i.createIndexBuffer(a),t.SegmentVector.simpleSegment(0,0,o.length,a.length)),this._resultBuffer=new Uint8Array(4),i.activeTexture.set(r.TEXTURE1);const s=r.createTexture();r.bindTexture(r.TEXTURE_2D,s),r.texParameteri(r.TEXTURE_2D,r.TEXTURE_WRAP_S,r.CLAMP_TO_EDGE),r.texParameteri(r.TEXTURE_2D,r.TEXTURE_WRAP_T,r.CLAMP_TO_EDGE),r.texParameteri(r.TEXTURE_2D,r.TEXTURE_MIN_FILTER,r.NEAREST),r.texParameteri(r.TEXTURE_2D,r.TEXTURE_MAG_FILTER,r.NEAREST),r.texImage2D(r.TEXTURE_2D,0,this._texFormat,this._texWidth,this._texHeight,0,this._texFormat,this._texType,null),this._fbo=i.createFramebuffer(this._texWidth,this._texHeight,!1,!1),this._fbo.colorAttachment.set(s),Xt(r)&&(this._pbo=r.createBuffer(),r.bindBuffer(r.PIXEL_PACK_BUFFER,this._pbo),r.bufferData(r.PIXEL_PACK_BUFFER,4,r.STREAM_READ),r.bindBuffer(r.PIXEL_PACK_BUFFER,null));}destroy(){const e=this._cachedRenderContext.context.gl;this._fullscreenTriangle.destroy(),this._fbo.destroy(),e.deleteBuffer(this._pbo),this._fullscreenTriangle=null,this._fbo=null,this._pbo=null,this._resultBuffer=null;}updateErrorLoop(e,t){const i=this._updateCount;return this._readbackQueue?i>=this._readbackQueue.frameNumberIssued+this._readbackWaitFrames&&this._tryReadback():i>=this._lastReadbackFrame+this._measureWaitFrames&&this._renderErrorTexture(e,t),this._updateCount++,this._measuredError}_bindFramebuffer(){const e=this._cachedRenderContext.context,t=e.gl;e.activeTexture.set(t.TEXTURE1),t.bindTexture(t.TEXTURE_2D,this._fbo.colorAttachment.get()),e.bindFramebuffer.set(this._fbo.framebuffer);}_renderErrorTexture(e,i){const r=this._cachedRenderContext.context,o=r.gl;if(this._bindFramebuffer(),r.viewport.set([0,0,this._texWidth,this._texHeight]),r.clear({color:t.Color.transparent}),this._cachedRenderContext.useProgram("projectionErrorMeasurement").draw(r,o.TRIANGLES,Zt.disabled,qt.disabled,jt.unblended,Gt.disabled,((e,t)=>({u_input:e,u_output_expected:t}))(e,i),null,null,"$clipping",this._fullscreenTriangle.vertexBuffer,this._fullscreenTriangle.indexBuffer,this._fullscreenTriangle.segments),this._pbo&&Xt(o)){o.bindBuffer(o.PIXEL_PACK_BUFFER,this._pbo),o.readBuffer(o.COLOR_ATTACHMENT0),o.readPixels(0,0,this._texWidth,this._texHeight,this._texFormat,this._texType,0),o.bindBuffer(o.PIXEL_PACK_BUFFER,null);const e=o.fenceSync(o.SYNC_GPU_COMMANDS_COMPLETE,0);o.flush(),this._readbackQueue={frameNumberIssued:this._updateCount,sync:e};}else this._readbackQueue={frameNumberIssued:this._updateCount,sync:null};}_tryReadback(){const e=this._cachedRenderContext.context.gl;if(this._pbo&&this._readbackQueue&&Xt(e)){const i=e.clientWaitSync(this._readbackQueue.sync,0,0);if(i===e.WAIT_FAILED)return t.warnOnce("WebGL2 clientWaitSync failed."),this._readbackQueue=null,void(this._lastReadbackFrame=this._updateCount);if(i===e.TIMEOUT_EXPIRED)return;e.bindBuffer(e.PIXEL_PACK_BUFFER,this._pbo),e.getBufferSubData(e.PIXEL_PACK_BUFFER,0,this._resultBuffer,0,4),e.bindBuffer(e.PIXEL_PACK_BUFFER,null);}else this._bindFramebuffer(),e.readPixels(0,0,this._texWidth,this._texHeight,this._texFormat,this._texType,this._resultBuffer);this._readbackQueue=null,this._measuredError=$t._parseRGBA8float(this._resultBuffer),this._lastReadbackFrame=this._updateCount;}static _parseRGBA8float(e){let t=0;return t+=e[0]/256,t+=e[1]/65536,t+=e[2]/16777216,e[3]<127&&(t=-t),t/128}}const Ht=t.EXTENT/128;function Kt(e,i){const r=void 0!==e.granularity?Math.max(e.granularity,1):1,o=r+(e.generateBorders?2:0),a=r+(e.extendToNorthPole||e.generateBorders?1:0)+(e.extendToSouthPole||e.generateBorders?1:0),s=o+1,n=a+1,l=e.generateBorders?-1:0,c=e.generateBorders||e.extendToNorthPole?-1:0,h=r+(e.generateBorders?1:0),u=r+(e.generateBorders||e.extendToSouthPole?1:0),d=s*n,_=o*a*6,p=s*n>65536;if(p&&"16bit"===i)throw new Error("Granularity is too large and meshes would not fit inside 16 bit vertex indices.");const m=p||"32bit"===i,f=new Int16Array(2*d);let g;g=m?{vertices:f,indices:new Uint32Array(_),uses32bitIndices:!0}:{vertices:f,indices:new Uint16Array(_),uses32bitIndices:!1};const v=g.indices;let y=0;for(let i=c;i<=u;i++)for(let o=l;o<=h;o++){let a=o/r*t.EXTENT;-1===o&&(a=-Ht),o===r+1&&(a=t.EXTENT+Ht);let s=i/r*t.EXTENT;-1===i&&(s=e.extendToNorthPole?t.NORTH_POLE_Y:-Ht),i===r+1&&(s=e.extendToSouthPole?t.SOUTH_POLE_Y:t.EXTENT+Ht),f[y++]=a,f[y++]=s;}let x=0;for(let e=0;e1e-6){const o=e[0]/r,a=Math.acos(e[2]/r),s=(o>0?a:-a)/Math.PI*180;return new t.LngLat(t.wrap(s,-180,180),i)}return new t.LngLat(0,i)}function oi(e){return Math.cos(e*Math.PI/180)}function ai(e,t){const i=oi(e);return de(oi(t)/i)}function si(e,i){const r=e.rotate(i.bearingInRadians),o=i.zoom+ai(i.center.lat,0),a=t.lerp(1/oi(i.center.lat),1/oi(Math.min(Math.abs(i.center.lat),60)),t.remapSaturate(o,7,3,0,1)),s=360/Qt({worldSize:i.worldSize,center:{lat:i.center.lat}});return new t.LngLat(i.center.lng-r.x*s*a,t.clamp(i.center.lat+r.y*s,-85.051129,ce))}function ni(e){const t=.5*e,i=Math.sin(t),r=Math.cos(t);return Math.log(i+r)-Math.log(r-i)}function li(e,i,r,o){const a=e.lat+r*o;if(Math.abs(r)>1){const s=(Math.sign(e.lat+r)!==Math.sign(e.lat)?-Math.abs(e.lat):Math.abs(e.lat))*Math.PI/180,n=Math.abs(e.lat+r)*Math.PI/180,l=ni(s+o*(n-s)),c=ni(s),h=ni(n);return new t.LngLat(e.lng+i*((l-c)/(h-c)),a)}return new t.LngLat(e.lng+i*o,a)}class ci{constructor(e){this._cachePrevious=new Map,this._cache=new Map,this._hadAnyChanges=!1,this._aabbFactory=e;}newFrame(){if(!this._hadAnyChanges)return;const e=this._cachePrevious;this._cachePrevious=this._cache,this._cache=e,this._cache.clear(),this._hadAnyChanges=!1;}getTileAABB(e,t,i,r){const o=`${e.z}_${e.x}_${e.y}`,a=this._cache.get(o);if(a)return a;const s=this._cachePrevious.get(o);if(s)return this._cache.set(o,s),s;const n=this._aabbFactory(e,t,i,r);return this._cache.set(o,n),this._hadAnyChanges=!0,n}}function hi(e,t,i){const r=e-t;return r<0?-r:Math.max(0,r-i)}function ui(e,t,i,r,o){const a=e-i;let s;return s=a<0?Math.min(-a,1+a-o):a>1?Math.min(Math.max(a-o,0),1-a):0,Math.max(s,hi(t,r,o))}class di{constructor(){this._aabbCache=new ci(this._computeTileAABB);}newFrame(){this._aabbCache.newFrame();}distanceToTile2d(e,t,i,r){const o=1<4}allowWorldCopies(){return !1}getTileAABB(e,t,i,r){return this._aabbCache.getTileAABB(e,t,i,r)}_computeTileAABB(e,i,r,o){if(e.z<=0)return new Lt([-1,-1,-1],[1,1,1]);if(1===e.z)return new Lt([0===e.x?-1:0,0===e.y?0:-1,-1],[0===e.x?0:1,0===e.y?1:0,1]);{const i=[ei(0,0,e.x,e.y,e.z),ei(t.EXTENT,0,e.x,e.y,e.z),ei(t.EXTENT,t.EXTENT,e.x,e.y,e.z),ei(0,t.EXTENT,e.x,e.y,e.z)],r=[1,1,1],o=[-1,-1,-1];for(const e of i)for(let t=0;t<3;t++)r[t]=Math.min(r[t],e[t]),o[t]=Math.max(o[t],e[t]);if(0===e.y||e.y===(1<0}constructor(e,i=!0,r=!0){this._cachedClippingPlane=t.createVec4f64(),this._lastGlobeStateEnabled=!0,this._lastUpdateTimeSeconds=f.now()/1e3,this._lastGlobeChangeTimeSeconds=f.now()/1e3-10,this._skipNextAnimation=!0,this._projectionMatrix=t.createIdentityMat4f64(),this._globeViewProjMatrix32f=t.createIdentityMat4f32(),this._globeViewProjMatrixNoCorrection=t.createIdentityMat4f64(),this._globeViewProjMatrixNoCorrectionInverted=t.createIdentityMat4f64(),this._globeProjMatrixInverted=t.createIdentityMat4f64(),this._cameraPosition=t.createVec3f64(),this._globeProjectionAllowed=!0,this._globeLatitudeErrorCorrectionRadians=0,this._globeness=1,this._adaptive=r,this._helper=new pe({calcMatrices:()=>{this._calcMatrices();},getConstrained:(e,t)=>this.getConstrained(e,t)}),this._globeProjectionAllowed=i,this._globeness=i?1:0,this._projectionInstance=e,this._mercatorTransform=new Ft,this._coveringTilesDetailsProvider=new di;}clone(){const e=new _i(null,this._globeProjectionAllowed);return e._applyGlobeTransform(this),e.apply(this),e}apply(e){this._helper.apply(e),this._mercatorTransform.apply(this);}_applyGlobeTransform(e){this._globeness=e._globeness,this._globeLatitudeErrorCorrectionRadians=e._globeLatitudeErrorCorrectionRadians;}get projectionMatrix(){return this.isGlobeRendering?this._projectionMatrix:this._mercatorTransform.projectionMatrix}get modelViewProjectionMatrix(){return this.isGlobeRendering?this._globeViewProjMatrixNoCorrection:this._mercatorTransform.modelViewProjectionMatrix}get inverseProjectionMatrix(){return this.isGlobeRendering?this._globeProjMatrixInverted:this._mercatorTransform.inverseProjectionMatrix}get cameraPosition(){const e=t.createVec3f64();return e[0]=this._cameraPosition[0],e[1]=this._cameraPosition[1],e[2]=this._cameraPosition[2],e}get cameraToCenterDistance(){return this._mercatorTransform.cameraToCenterDistance}get nearZ(){return this._nearZ}get farZ(){return this._farZ}getGlobeViewAllowed(){return this._globeProjectionAllowed}setGlobeViewAllowed(e,t=!0){e!==this._globeProjectionAllowed&&(t||(this._skipNextAnimation=!0),this._globeProjectionAllowed=e,this._lastGlobeChangeTimeSeconds=this._lastUpdateTimeSeconds);}newFrameUpdate(){this._lastUpdateTimeSeconds=f.now()/1e3;const e=this.isGlobeRendering;return this._globeness=!this._adaptive&&this._globeProjectionAllowed?1:this._computeGlobenessAnimation(),this._updateErrorCorrectionValue(),this._calcMatrices(),this._coveringTilesDetailsProvider.newFrame(),e===this.isGlobeRendering?{forcePlacementUpdate:!1}:{forcePlacementUpdate:!0,fireProjectionEvent:{type:"projectiontransition",newProjection:this.isGlobeRendering?"globe":"globe-mercator"},forceSourceUpdate:!0}}_updateErrorCorrectionValue(){this._projectionInstance&&(this._projectionInstance.useGlobeRendering=this.isGlobeRendering,this._projectionInstance.errorQueryLatitudeDegrees=this.center.lat,this._globeLatitudeErrorCorrectionRadians=this._projectionInstance.latitudeErrorCorrectionRadians);}_computeGlobenessAnimation(){const e=this._globeProjectionAllowed&&this.zoom<12,i=this._lastUpdateTimeSeconds;e!==this._lastGlobeStateEnabled&&(this._lastGlobeChangeTimeSeconds=i,this._lastGlobeStateEnabled=e);const r=this._globeness,o=Math.min(Math.max((i-this._lastGlobeChangeTimeSeconds)/.5,0),1);let a=e?o:1-o;return this._skipNextAnimation&&(a=e?1:0,this._lastGlobeChangeTimeSeconds=i-1,this._skipNextAnimation=!1),a=t.easeCubicInOut(a),r!==a&&(this.setCenter(new t.LngLat(this._mercatorTransform.center.lng+t.differenceOfAnglesDegrees(this._mercatorTransform.center.lng,this.center.lng)*a,t.lerp(this._mercatorTransform.center.lat,this.center.lat,a))),this.setZoom(t.lerp(this._mercatorTransform.zoom,this.zoom,a))),a}isRenderingDirty(){return this._lastUpdateTimeSeconds-this._lastGlobeChangeTimeSeconds<.5}getProjectionData(e){const{overscaledTileID:t,aligned:i,applyTerrainMatrix:r,applyGlobeMatrix:o}=e,a=this._mercatorTransform.getProjectionData({overscaledTileID:t,aligned:i,applyTerrainMatrix:r});return this.isGlobeRendering&&(a.mainMatrix=this._globeViewProjMatrix32f),a.clippingPlane=this._cachedClippingPlane,a.projectionTransition=o?this._globeness:0,a}_computeClippingPlane(e){const i=this.pitchInRadians,r=this.cameraToCenterDistance/e,o=Math.sin(i)*r,a=Math.cos(i)*r+1,s=1/Math.sqrt(o*o+a*a)*1;let n=-o,l=a;const c=Math.sqrt(n*n+l*l);n/=c,l/=c;const h=[0,n,l];return t.rotateZ$1(h,h,[0,0,0],-this.bearingInRadians),t.rotateX$1(h,h,[0,0,0],-1*this.center.lat*Math.PI/180),t.rotateY(h,h,[0,0,0],this.center.lng*Math.PI/180),t.scale$2(h,h,.25),[...h,.25*-s]}isLocationOccluded(e){return !this.isSurfacePointVisible(ti(e))}transformLightDirection(e){const i=this._helper._center.lng*Math.PI/180,r=this._helper._center.lat*Math.PI/180,o=Math.cos(r),a=[Math.sin(i)*o,Math.sin(r),Math.cos(i)*o],s=[a[2],0,-a[0]],n=[0,0,0];t.cross(n,s,a),t.normalize(s,s),t.normalize(n,n);const l=[0,0,0];return t.normalize(l,[s[0]*e[0]+n[0]*e[1]+a[0]*e[2],s[1]*e[0]+n[1]*e[1]+a[1]*e[2],s[2]*e[0]+n[2]*e[1]+a[2]*e[2]]),l}getAnimatedLatitude(){return t.lerp(this._mercatorTransform.center.lat,this._helper._center.lat,this._globeness)}getPixelScale(){return t.lerp(this._mercatorTransform.getPixelScale(),1/Math.cos(this.getAnimatedLatitude()*Math.PI/180),this._globeness)}getCircleRadiusCorrection(){return t.lerp(this._mercatorTransform.getCircleRadiusCorrection(),Math.cos(this.getAnimatedLatitude()*Math.PI/180),this._globeness)}getPitchedTextCorrection(e,i,r){const o=this._mercatorTransform.getPitchedTextCorrection(e,i,r);if(!this.isGlobeRendering)return o;const a=function(e,i,r){const o=1/(1<a&&(a=i),rn&&(n=r);}const h=[c.lng+s,c.lat+l,c.lng+a,c.lat+n];return this.isSurfacePointOnScreen([0,1,0])&&(h[3]=90,h[0]=-180,h[2]=180),this.isSurfacePointOnScreen([0,-1,0])&&(h[1]=-90,h[0]=-180,h[2]=180),new V(h)}getConstrained(e,i){const r=t.clamp(e.lat,-85.051129,ce),o=t.clamp(+i,this.minZoom+ai(0,r),this.maxZoom);return {center:new t.LngLat(e.lng,r),zoom:o}}calculateCenterFromCameraLngLatAlt(e,t,i,r){return this._mercatorTransform.calculateCenterFromCameraLngLatAlt(e,t,i,r)}setLocationAtPoint(e,i){if(!this.isGlobeRendering)return this._mercatorTransform.setLocationAtPoint(e,i),void this.apply(this._mercatorTransform);const r=ti(this.unprojectScreenPoint(i)),o=ti(e),a=t.createVec3f64();t.zero$1(a);const s=t.createVec3f64();t.rotateY(s,r,a,-this.center.lng*Math.PI/180),t.rotateX$1(s,s,a,this.center.lat*Math.PI/180);const n=o[0]*o[0]+o[2]*o[2],l=s[0]*s[0];if(n=-g&&p<=g,y=f>=-g&&f<=g;let x,b;if(v&&y){const e=this.center.lng*Math.PI/180,i=this.center.lat*Math.PI/180;t.distanceOfAnglesRadians(u,e)+t.distanceOfAnglesRadians(p,i)=0}isSurfacePointOnScreen(e){if(!this.isSurfacePointVisible(e))return !1;const i=t.createVec4f64();return t.transformMat4(i,[...e,1],this._globeViewProjMatrixNoCorrection),i[0]/=i[3],i[1]/=i[3],i[2]/=i[3],i[0]>-1&&i[0]<1&&i[1]>-1&&i[1]<1&&i[2]>-1&&i[2]<1}rayPlanetIntersection(e,i){const r=t.dot(e,i),o=t.createVec3f64(),a=t.createVec3f64();t.scale$2(a,i,r),t.sub(o,e,a);const s=1-t.dot(o,o);if(s<0)return null;const n=t.dot(e,e)-1,l=-r+(r<0?1:-1)*Math.sqrt(s),c=n/l,h=l;return {tMin:Math.min(c,h),tMax:Math.max(c,h)}}unprojectScreenPoint(e){const i=this._cameraPosition,r=this.getRayDirectionFromPixel(e),o=this.rayPlanetIntersection(i,r);if(o){const e=t.createVec3f64();t.add(e,i,[r[0]*o.tMin,r[1]*o.tMin,r[2]*o.tMin]);const a=t.createVec3f64();return t.normalize(a,e),ri(a)}const a=this._cachedClippingPlane[0]*r[0]+this._cachedClippingPlane[1]*r[1]+this._cachedClippingPlane[2]*r[2],s=-t.pointPlaneSignedDistance(this._cachedClippingPlane,i)/a,n=t.createVec3f64();if(s>0)t.add(n,i,[r[0]*s,r[1]*s,r[2]*s]);else {const e=t.createVec3f64();t.add(e,i,[2*r[0],2*r[1],2*r[2]]);const o=t.pointPlaneSignedDistance(this._cachedClippingPlane,e);t.sub(n,e,[this._cachedClippingPlane[0]*o,this._cachedClippingPlane[1]*o,this._cachedClippingPlane[2]*o]);}const l=t.createVec3f64();return t.normalize(l,n),ri(l)}getMatrixForModel(e,i){if(!this.isGlobeRendering)return this._mercatorTransform.getMatrixForModel(e,i);const r=t.LngLat.convert(e),o=1/t.earthRadius,a=t.createIdentityMat4f64();return t.rotateY$1(a,a,r.lng/180*Math.PI),t.rotateX(a,a,-r.lat/180*Math.PI),t.translate(a,a,[0,0,1+i/t.earthRadius]),t.rotateX(a,a,.5*Math.PI),t.scale(a,a,[o,o,o]),a}getProjectionDataForCustomLayer(e=!0){const i=this.getProjectionData({overscaledTileID:new t.OverscaledTileID(0,0,0,0,0),applyGlobeMatrix:e});i.tileMercatorCoords=[0,0,1,1];const r=t.createMat4f32();return t.scale(r,i.fallbackMatrix,[t.EXTENT,t.EXTENT,1]),i.fallbackMatrix=r,i}getFastPathSimpleProjectionMatrix(e){if(!this.isGlobeRendering)return this._mercatorTransform.getFastPathSimpleProjectionMatrix(e)}}class pi{constructor(e){this._globe=e,this._mercatorCameraHelper=new Ut;}get useGlobeControls(){return this._globe.useGlobeRendering}handlePanInertia(e,i){if(!this.useGlobeControls)return this._mercatorCameraHelper.handlePanInertia(e,i);const r=si(e,i);return Math.abs(r.lng-i.center.lng)>180&&(r.lng=i.center.lng+179.5*Math.sign(r.lng-i.center.lng)),{easingCenter:r,easingOffset:new t.Point(0,0)}}handleMapControlsRollPitchBearingZoom(e,i){if(!this.useGlobeControls)return void this._mercatorCameraHelper.handleMapControlsRollPitchBearingZoom(e,i);const r=e.around,o=i.screenPointToLocation(r);e.bearingDelta&&i.setBearing(i.bearing+e.bearingDelta),e.pitchDelta&&i.setPitch(i.pitch+e.pitchDelta),e.rollDelta&&i.setRoll(i.roll+e.rollDelta);const a=i.zoom;e.zoomDelta&&i.setZoom(i.zoom+e.zoomDelta);const s=i.zoom-a;if(0===s)return;const n=t.differenceOfAnglesDegrees(i.center.lng,o.lng),l=n/(Math.abs(n/180)+1),c=t.differenceOfAnglesDegrees(i.center.lat,o.lat),h=i.getRayDirectionFromPixel(r),u=i.cameraPosition,d=-1*t.dot(u,h),_=t.createVec3f64();t.add(_,u,[h[0]*d,h[1]*d,h[2]*d]);const p=t.length$1(_)-1,m=Math.exp(.5*-Math.max(p-.3,0)),f=ii(i.worldSize,i.center.lat)/Math.min(i.width,i.height),g=t.remapSaturate(f,.9,.5,1,.25),v=(1-ue(-s))*Math.min(m,g),y=i.center.lat,x=i.zoom,b=new t.LngLat(i.center.lng+l*v,t.clamp(i.center.lat+c*v,-85.051129,ce));i.setLocationAtPoint(o,r);const w=i.center,T=t.remapSaturate(Math.abs(n),45,85,0,1),E=t.remapSaturate(f,.75,.35,0,1),P=Math.pow(Math.max(T,E),.25),I=t.differenceOfAnglesDegrees(w.lng,b.lng),C=t.differenceOfAnglesDegrees(w.lat,b.lat);i.setCenter(new t.LngLat(w.lng+I*P,w.lat+C*P).wrap()),i.setZoom(x+ai(y,i.center.lat));}handleMapControlsPan(e,t,i){if(!this.useGlobeControls)return void this._mercatorCameraHelper.handleMapControlsPan(e,t,i);if(!e.panDelta)return;const r=t.center.lat,o=t.zoom;t.setCenter(si(e.panDelta,t).wrap()),t.setZoom(o+ai(r,t.center.lat));}cameraForBoxAndBearing(e,i,r,o,a){const s=this._mercatorCameraHelper.cameraForBoxAndBearing(e,i,r,o,a);if(!this.useGlobeControls)return s;const n=i.left/a.width*2-1,l=(a.width-i.right)/a.width*2-1,c=i.top/a.height*-2+1,h=(a.height-i.bottom)/a.height*-2+1,u=t.differenceOfAnglesDegrees(r.getWest(),r.getEast())<0,d=u?r.getEast():r.getWest(),_=u?r.getWest():r.getEast(),p=Math.max(r.getNorth(),r.getSouth()),m=Math.min(r.getNorth(),r.getSouth()),f=d+.5*t.differenceOfAnglesDegrees(d,_),g=p+.5*t.differenceOfAnglesDegrees(p,m),v=a.clone();v.setCenter(s.center),v.setBearing(s.bearing),v.setPitch(0),v.setRoll(0),v.setZoom(s.zoom);const y=v.modelViewProjectionMatrix,x=[ti(r.getNorthWest()),ti(r.getNorthEast()),ti(r.getSouthWest()),ti(r.getSouthEast()),ti(new t.LngLat(_,g)),ti(new t.LngLat(d,g)),ti(new t.LngLat(f,p)),ti(new t.LngLat(f,m))],b=ti(s.center);let w=Number.POSITIVE_INFINITY;for(const e of x)n<0&&(w=pi.getLesserNonNegativeNonNull(w,pi.solveVectorScale(e,b,y,"x",n))),l>0&&(w=pi.getLesserNonNegativeNonNull(w,pi.solveVectorScale(e,b,y,"x",l))),c>0&&(w=pi.getLesserNonNegativeNonNull(w,pi.solveVectorScale(e,b,y,"y",c))),h<0&&(w=pi.getLesserNonNegativeNonNull(w,pi.solveVectorScale(e,b,y,"y",h)));if(Number.isFinite(w)&&0!==w)return s.zoom=v.zoom+de(w),s;Bt();}handleJumpToCenterZoom(e,i){if(!this.useGlobeControls)return void this._mercatorCameraHelper.handleJumpToCenterZoom(e,i);const r=e.center.lat,o=e.getConstrained(i.center?t.LngLat.convert(i.center):e.center,e.zoom).center;e.setCenter(o.wrap());const a=void 0!==i.zoom?+i.zoom:e.zoom+ai(r,o.lat);e.zoom!==a&&e.setZoom(a);}handleEaseTo(e,i){if(!this.useGlobeControls)return this._mercatorCameraHelper.handleEaseTo(e,i);const r=e.zoom,o=e.center,a={roll:e.roll,pitch:e.pitch,bearing:e.bearing},s={roll:void 0===i.roll?e.roll:i.roll,pitch:void 0===i.pitch?e.pitch:i.pitch,bearing:void 0===i.bearing?e.bearing:i.bearing},n=void 0!==i.zoom,l=!e.isPaddingEqual(i.padding);let c=!1;const h=i.center?t.LngLat.convert(i.center):o,u=e.getConstrained(h,r).center;he(e,u);const d=e.clone();d.setCenter(u),l&&d.setPadding(i.padding),d.setZoom(n?+i.zoom:r+ai(o.lat,h.lat)),d.setBearing(i.bearing);const _=new t.Point(t.clamp(e.centerPoint.x+i.offsetAsPoint.x,0,e.width),t.clamp(e.centerPoint.y+i.offsetAsPoint.y,0,e.height));d.setLocationAtPoint(u,_);const p=(i.offset&&i.offsetAsPoint.mag())>0?d.center:u,m=n?+i.zoom:r+ai(o.lat,p.lat),f=r+ai(o.lat,0),g=m+ai(p.lat,0),v=t.differenceOfAnglesDegrees(o.lng,p.lng),y=t.differenceOfAnglesDegrees(o.lat,p.lat),x=ue(g-f);return c=m!==r,{easeFunc:r=>{if(t.rollPitchBearingEqual(a,s)||Ot({startEulerAngles:a,endEulerAngles:s,tr:e,k:r,useSlerp:a.roll!=s.roll}),i.around)t.warnOnce("Easing around a point is not supported under globe projection."),e.setLocationAtPoint(i.around,i.aroundPoint);else {const t=g>f?Math.min(2,x):Math.max(.5,x),i=Math.pow(t,1-r),a=li(o,v,y,r*i);e.setCenter(a.wrap());}if(c){const i=t.interpolateFactory.number(f,g,r)+ai(0,e.center.lat);e.setZoom(i);}},isZooming:c,elevationCenter:p}}handleFlyTo(e,i){if(!this.useGlobeControls)return this._mercatorCameraHelper.handleFlyTo(e,i);const r=void 0!==i.zoom,o=e.center,a=e.zoom,s=!e.isPaddingEqual(i.padding),n=e.getConstrained(t.LngLat.convert(i.center||i.locationAtOffset),a).center,l=r?+i.zoom:e.zoom+ai(e.center.lat,n.lat),c=e.clone();c.setCenter(n),s&&c.setPadding(i.padding),c.setZoom(l),c.setBearing(i.bearing);const h=new t.Point(t.clamp(e.centerPoint.x+i.offsetAsPoint.x,0,e.width),t.clamp(e.centerPoint.y+i.offsetAsPoint.y,0,e.height));c.setLocationAtPoint(n,h);const u=c.center;he(e,u);const d=function(e,i,r){const o=ti(i),a=ti(r),s=t.dot(o,a),n=Math.acos(s),l=Qt(e);return n/(2*Math.PI)*l}(e,o,u),_=a+ai(o.lat,0),p=l+ai(u.lat,0),m=ue(p-_);let f;if("number"==typeof i.minZoom){const t=+i.minZoom+ai(u.lat,0),r=Math.min(t,_,p)+ai(0,u.lat);f=ue(e.getConstrained(u,r).zoom+ai(u.lat,0)-_);}const g=t.differenceOfAnglesDegrees(o.lng,u.lng),v=t.differenceOfAnglesDegrees(o.lat,u.lat);return {easeFunc:(t,i,r,a)=>{const s=li(o,g,v,r),n=1===t?u:s;e.setCenter(n.wrap());const c=_+de(i);e.setZoom(1===t?l:c+ai(0,n.lat));},scaleOfZoom:m,targetCenter:u,scaleOfMinZoom:f,pixelPathLength:d}}static solveVectorScale(e,t,i,r,o){const a="x"===r?[i[0],i[4],i[8],i[12]]:[i[1],i[5],i[9],i[13]],s=[i[3],i[7],i[11],i[15]],n=e[0]*a[0]+e[1]*a[1]+e[2]*a[2],l=e[0]*s[0]+e[1]*s[1]+e[2]*s[2],c=t[0]*a[0]+t[1]*a[1]+t[2]*a[2],h=t[0]*s[0]+t[1]*s[1]+t[2]*s[2];return c+o*l===n+o*h||s[3]*(n-c)+a[3]*(h-l)+n*h==c*l?null:(c+a[3]-o*h-o*s[3])/(c-n-o*h+o*l)}static getLesserNonNegativeNonNull(e,t){return null!==t&&t>=0&&tt.emitValidationErrors(e,i&&i.filter((e=>"source.canvas"!==e.identifier))),fi=t.emptyStyle();class gi extends t.Evented{constructor(e,i={}){super(),this._rtlPluginLoaded=()=>{for(const e in this.sourceCaches){const t=this.sourceCaches[e].getSource().type;"vector"!==t&&"geojson"!==t||this.sourceCaches[e].reload();}},this.map=e,this.dispatcher=new O(B(),e._getMapId()),this.dispatcher.registerMessageHandler("GG",((e,t)=>this.getGlyphs(e,t))),this.dispatcher.registerMessageHandler("GI",((e,t)=>this.getImages(e,t))),this.imageManager=new b,this.imageManager.setEventedParent(this),this.glyphManager=new P(e._requestManager,i.localIdeographFontFamily),this.lineAtlas=new D(256,512),this.crossTileSymbolIndex=new gt,this._spritesImagesIds={},this._layers={},this._order=[],this.sourceCaches={},this.zoomHistory=new t.ZoomHistory,this._loaded=!1,this._availableImages=[],this._resetUpdates(),this.dispatcher.broadcast("SR",t.getReferrer()),oe().on(te,this._rtlPluginLoaded),this.on("data",(e=>{if("source"!==e.dataType||"metadata"!==e.sourceDataType)return;const t=this.sourceCaches[e.sourceId];if(!t)return;const i=t.getSource();if(i&&i.vectorLayerIds)for(const e in this._layers){const t=this._layers[e];t.source===i.id&&this._validateLayer(t);}}));}loadURL(e,i={},r){this.fire(new t.Event("dataloading",{dataType:"style"})),i.validate="boolean"!=typeof i.validate||i.validate;const o=this.map._requestManager.transformRequest(e,"Style");this._loadStyleRequest=new AbortController;const a=this._loadStyleRequest;t.getJSON(o,this._loadStyleRequest).then((e=>{this._loadStyleRequest=null,this._load(e.data,i,r);})).catch((e=>{this._loadStyleRequest=null,e&&!a.signal.aborted&&this.fire(new t.ErrorEvent(e));}));}loadJSON(e,i={},r){this.fire(new t.Event("dataloading",{dataType:"style"})),this._frameRequest=new AbortController,f.frameAsync(this._frameRequest).then((()=>{this._frameRequest=null,i.validate=!1!==i.validate,this._load(e,i,r);})).catch((()=>{}));}loadEmpty(){this.fire(new t.Event("dataloading",{dataType:"style"})),this._load(fi,{validate:!1});}_load(e,i,r){var o,a;const s=i.transformStyle?i.transformStyle(r,e):e;if(!i.validate||!mi(this,t.validateStyle(s))){this._loaded=!0,this.stylesheet=s;for(const e in s.sources)this.addSource(e,s.sources[e],{validate:!1});s.sprite?this._loadSprite(s.sprite):this.imageManager.setLoaded(!0),this.glyphManager.setURL(s.glyphs),this._createLayers(),this.light=new M(this.stylesheet.light),this._setProjectionInternal((null===(o=this.stylesheet.projection)||void 0===o?void 0:o.type)||"mercator"),this.sky=new R(this.stylesheet.sky),this.map.setTerrain(null!==(a=this.stylesheet.terrain)&&void 0!==a?a:null),this.fire(new t.Event("data",{dataType:"style"})),this.fire(new t.Event("style.load"));}}_createLayers(){const e=t.derefLayers(this.stylesheet.layers);this.dispatcher.broadcast("SL",e),this._order=e.map((e=>e.id)),this._layers={},this._serializedLayers=null;for(const i of e){const e=t.createStyleLayer(i);e.setEventedParent(this,{layer:{id:i.id}}),this._layers[i.id]=e;}}_loadSprite(e,i=!1,r=void 0){let o;this.imageManager.setLoaded(!1),this._spriteRequest=new AbortController,function(e,i,r,o){return t.__awaiter(this,void 0,void 0,(function*(){const a=g(e),s=r>1?"@2x":"",n={},l={};for(const{id:e,url:r}of a){const a=i.transformRequest(v(r,s,".json"),"SpriteJSON");n[e]=t.getJSON(a,o);const c=i.transformRequest(v(r,s,".png"),"SpriteImage");l[e]=_.getImage(c,o);}return yield Promise.all([...Object.values(n),...Object.values(l)]),function(e,i){return t.__awaiter(this,void 0,void 0,(function*(){const t={};for(const r in e){t[r]={};const o=f.getImageCanvasContext((yield i[r]).data),a=(yield e[r]).data;for(const e in a){const{width:i,height:s,x:n,y:l,sdf:c,pixelRatio:h,stretchX:u,stretchY:d,content:_,textFitWidth:p,textFitHeight:m}=a[e];t[r][e]={data:null,pixelRatio:h,sdf:c,stretchX:u,stretchY:d,content:_,textFitWidth:p,textFitHeight:m,spriteData:{width:i,height:s,x:n,y:l,context:o}};}}return t}))}(n,l)}))}(e,this.map._requestManager,this.map.getPixelRatio(),this._spriteRequest).then((e=>{if(this._spriteRequest=null,e)for(const t in e){this._spritesImagesIds[t]=[];const r=this._spritesImagesIds[t]?this._spritesImagesIds[t].filter((t=>!(t in e))):[];for(const e of r)this.imageManager.removeImage(e),this._changedImages[e]=!0;for(const r in e[t]){const o="default"===t?r:`${t}:${r}`;this._spritesImagesIds[t].push(o),o in this.imageManager.images?this.imageManager.updateImage(o,e[t][r],!1):this.imageManager.addImage(o,e[t][r]),i&&(this._changedImages[o]=!0);}}})).catch((e=>{this._spriteRequest=null,o=e,this.fire(new t.ErrorEvent(o));})).finally((()=>{this.imageManager.setLoaded(!0),this._availableImages=this.imageManager.listImages(),i&&(this._changed=!0),this.dispatcher.broadcast("SI",this._availableImages),this.fire(new t.Event("data",{dataType:"style"})),r&&r(o);}));}_unloadSprite(){for(const e of Object.values(this._spritesImagesIds).flat())this.imageManager.removeImage(e),this._changedImages[e]=!0;this._spritesImagesIds={},this._availableImages=this.imageManager.listImages(),this._changed=!0,this.dispatcher.broadcast("SI",this._availableImages),this.fire(new t.Event("data",{dataType:"style"}));}_validateLayer(e){const i=this.sourceCaches[e.source];if(!i)return;const r=e.sourceLayer;if(!r)return;const o=i.getSource();("geojson"===o.type||o.vectorLayerIds&&-1===o.vectorLayerIds.indexOf(r))&&this.fire(new t.ErrorEvent(new Error(`Source layer "${r}" does not exist on source "${o.id}" as specified by style layer "${e.id}".`)));}loaded(){if(!this._loaded)return !1;if(Object.keys(this._updatedSources).length)return !1;for(const e in this.sourceCaches)if(!this.sourceCaches[e].loaded())return !1;return !!this.imageManager.isLoaded()}_serializeByIds(e,i=!1){const r=this._serializedAllLayers();if(!e||0===e.length)return Object.values(i?t.clone$2(r):r);const o=[];for(const a of e)if(r[a]){const e=i?t.clone$2(r[a]):r[a];o.push(e);}return o}_serializedAllLayers(){let e=this._serializedLayers;if(e)return e;e=this._serializedLayers={};const t=Object.keys(this._layers);for(const i of t){const t=this._layers[i];"custom"!==t.type&&(e[i]=t.serialize());}return e}hasTransitions(){if(this.light&&this.light.hasTransition())return !0;if(this.sky&&this.sky.hasTransition())return !0;for(const e in this.sourceCaches)if(this.sourceCaches[e].hasTransition())return !0;for(const e in this._layers)if(this._layers[e].hasTransition())return !0;return !1}_checkLoaded(){if(!this._loaded)throw new Error("Style is not done loading.")}update(e){if(!this._loaded)return;const i=this._changed;if(i){const t=Object.keys(this._updatedLayers),i=Object.keys(this._removedLayers);(t.length||i.length)&&this._updateWorkerLayers(t,i);for(const e in this._updatedSources){const t=this._updatedSources[e];if("reload"===t)this._reloadSource(e);else {if("clear"!==t)throw new Error(`Invalid action ${t}`);this._clearSource(e);}}this._updateTilesForChangedImages(),this._updateTilesForChangedGlyphs();for(const t in this._updatedPaintProps)this._layers[t].updateTransitions(e);this.light.updateTransitions(e),this.sky.updateTransitions(e),this._resetUpdates();}const r={};for(const e in this.sourceCaches){const t=this.sourceCaches[e];r[e]=t.used,t.used=!1;}for(const t of this._order){const i=this._layers[t];i.recalculate(e,this._availableImages),!i.isHidden(e.zoom)&&i.source&&(this.sourceCaches[i.source].used=!0);}for(const e in r){const i=this.sourceCaches[e];!!r[e]!=!!i.used&&i.fire(new t.Event("data",{sourceDataType:"visibility",dataType:"source",sourceId:e}));}this.light.recalculate(e),this.sky.recalculate(e),this.z=e.zoom,i&&this.fire(new t.Event("data",{dataType:"style"}));}_updateTilesForChangedImages(){const e=Object.keys(this._changedImages);if(e.length){for(const t in this.sourceCaches)this.sourceCaches[t].reloadTilesForDependencies(["icons","patterns"],e);this._changedImages={};}}_updateTilesForChangedGlyphs(){if(this._glyphsDidChange){for(const e in this.sourceCaches)this.sourceCaches[e].reloadTilesForDependencies(["glyphs"],[""]);this._glyphsDidChange=!1;}}_updateWorkerLayers(e,t){this.dispatcher.broadcast("UL",{layers:this._serializeByIds(e,!1),removedIds:t});}_resetUpdates(){this._changed=!1,this._updatedLayers={},this._removedLayers={},this._updatedSources={},this._updatedPaintProps={},this._changedImages={},this._glyphsDidChange=!1;}setState(e,i={}){var r;this._checkLoaded();const o=this.serialize();if(e=i.transformStyle?i.transformStyle(o,e):e,(null===(r=i.validate)||void 0===r||r)&&mi(this,t.validateStyle(e)))return !1;(e=t.clone$2(e)).layers=t.derefLayers(e.layers);const a=t.diff(o,e),s=this._getOperationsToPerform(a);if(s.unimplemented.length>0)throw new Error(`Unimplemented: ${s.unimplemented.join(", ")}.`);if(0===s.operations.length)return !1;for(const e of s.operations)e();return this.stylesheet=e,this._serializedLayers=null,!0}_getOperationsToPerform(e){const t=[],i=[];for(const r of e)switch(r.command){case"setCenter":case"setZoom":case"setBearing":case"setPitch":case"setRoll":continue;case"addLayer":t.push((()=>this.addLayer.apply(this,r.args)));break;case"removeLayer":t.push((()=>this.removeLayer.apply(this,r.args)));break;case"setPaintProperty":t.push((()=>this.setPaintProperty.apply(this,r.args)));break;case"setLayoutProperty":t.push((()=>this.setLayoutProperty.apply(this,r.args)));break;case"setFilter":t.push((()=>this.setFilter.apply(this,r.args)));break;case"addSource":t.push((()=>this.addSource.apply(this,r.args)));break;case"removeSource":t.push((()=>this.removeSource.apply(this,r.args)));break;case"setLayerZoomRange":t.push((()=>this.setLayerZoomRange.apply(this,r.args)));break;case"setLight":t.push((()=>this.setLight.apply(this,r.args)));break;case"setGeoJSONSourceData":t.push((()=>this.setGeoJSONSourceData.apply(this,r.args)));break;case"setGlyphs":t.push((()=>this.setGlyphs.apply(this,r.args)));break;case"setSprite":t.push((()=>this.setSprite.apply(this,r.args)));break;case"setTerrain":t.push((()=>this.map.setTerrain.apply(this,r.args)));break;case"setSky":t.push((()=>this.setSky.apply(this,r.args)));break;case"setProjection":this.setProjection.apply(this,r.args);break;case"setTransition":t.push((()=>{}));break;default:i.push(r.command);}return {operations:t,unimplemented:i}}addImage(e,i){if(this.getImage(e))return this.fire(new t.ErrorEvent(new Error(`An image named "${e}" already exists.`)));this.imageManager.addImage(e,i),this._afterImageUpdated(e);}updateImage(e,t){this.imageManager.updateImage(e,t);}getImage(e){return this.imageManager.getImage(e)}removeImage(e){if(!this.getImage(e))return this.fire(new t.ErrorEvent(new Error(`An image named "${e}" does not exist.`)));this.imageManager.removeImage(e),this._afterImageUpdated(e);}_afterImageUpdated(e){this._availableImages=this.imageManager.listImages(),this._changedImages[e]=!0,this._changed=!0,this.dispatcher.broadcast("SI",this._availableImages),this.fire(new t.Event("data",{dataType:"style"}));}listImages(){return this._checkLoaded(),this.imageManager.listImages()}addSource(e,i,r={}){if(this._checkLoaded(),void 0!==this.sourceCaches[e])throw new Error(`Source "${e}" already exists.`);if(!i.type)throw new Error(`The type property must be defined, but only the following properties were given: ${Object.keys(i).join(", ")}.`);if(["vector","raster","geojson","video","image"].indexOf(i.type)>=0&&this._validate(t.validateStyle.source,`sources.${e}`,i,null,r))return;this.map&&this.map._collectResourceTiming&&(i.collectResourceTiming=!0);const o=this.sourceCaches[e]=new ye(e,i,this.dispatcher);o.style=this,o.setEventedParent(this,(()=>({isSourceLoaded:o.loaded(),source:o.serialize(),sourceId:e}))),o.onAdd(this.map),this._changed=!0;}removeSource(e){if(this._checkLoaded(),void 0===this.sourceCaches[e])throw new Error("There is no source with this ID");for(const i in this._layers)if(this._layers[i].source===e)return this.fire(new t.ErrorEvent(new Error(`Source "${e}" cannot be removed while layer "${i}" is using it.`)));const i=this.sourceCaches[e];delete this.sourceCaches[e],delete this._updatedSources[e],i.fire(new t.Event("data",{sourceDataType:"metadata",dataType:"source",sourceId:e})),i.setEventedParent(null),i.onRemove(this.map),this._changed=!0;}setGeoJSONSourceData(e,t){if(this._checkLoaded(),void 0===this.sourceCaches[e])throw new Error(`There is no source with this ID=${e}`);const i=this.sourceCaches[e].getSource();if("geojson"!==i.type)throw new Error(`geojsonSource.type is ${i.type}, which is !== 'geojson`);i.setData(t),this._changed=!0;}getSource(e){return this.sourceCaches[e]&&this.sourceCaches[e].getSource()}addLayer(e,i,r={}){this._checkLoaded();const o=e.id;if(this.getLayer(o))return void this.fire(new t.ErrorEvent(new Error(`Layer "${o}" already exists on this map.`)));let a;if("custom"===e.type){if(mi(this,t.validateCustomStyleLayer(e)))return;a=t.createStyleLayer(e);}else {if("source"in e&&"object"==typeof e.source&&(this.addSource(o,e.source),e=t.clone$2(e),e=t.extend(e,{source:o})),this._validate(t.validateStyle.layer,`layers.${o}`,e,{arrayIndex:-1},r))return;a=t.createStyleLayer(e),this._validateLayer(a),a.setEventedParent(this,{layer:{id:o}});}const s=i?this._order.indexOf(i):this._order.length;if(i&&-1===s)this.fire(new t.ErrorEvent(new Error(`Cannot add layer "${o}" before non-existing layer "${i}".`)));else {if(this._order.splice(s,0,o),this._layerOrderChanged=!0,this._layers[o]=a,this._removedLayers[o]&&a.source&&"custom"!==a.type){const e=this._removedLayers[o];delete this._removedLayers[o],e.type!==a.type?this._updatedSources[a.source]="clear":(this._updatedSources[a.source]="reload",this.sourceCaches[a.source].pause());}this._updateLayer(a),a.onAdd&&a.onAdd(this.map);}}moveLayer(e,i){if(this._checkLoaded(),this._changed=!0,!this._layers[e])return void this.fire(new t.ErrorEvent(new Error(`The layer '${e}' does not exist in the map's style and cannot be moved.`)));if(e===i)return;const r=this._order.indexOf(e);this._order.splice(r,1);const o=i?this._order.indexOf(i):this._order.length;i&&-1===o?this.fire(new t.ErrorEvent(new Error(`Cannot move layer "${e}" before non-existing layer "${i}".`))):(this._order.splice(o,0,e),this._layerOrderChanged=!0);}removeLayer(e){this._checkLoaded();const i=this._layers[e];if(!i)return void this.fire(new t.ErrorEvent(new Error(`Cannot remove non-existing layer "${e}".`)));i.setEventedParent(null);const r=this._order.indexOf(e);this._order.splice(r,1),this._layerOrderChanged=!0,this._changed=!0,this._removedLayers[e]=i,delete this._layers[e],this._serializedLayers&&delete this._serializedLayers[e],delete this._updatedLayers[e],delete this._updatedPaintProps[e],i.onRemove&&i.onRemove(this.map);}getLayer(e){return this._layers[e]}getLayersOrder(){return [...this._order]}hasLayer(e){return e in this._layers}setLayerZoomRange(e,i,r){this._checkLoaded();const o=this.getLayer(e);o?o.minzoom===i&&o.maxzoom===r||(null!=i&&(o.minzoom=i),null!=r&&(o.maxzoom=r),this._updateLayer(o)):this.fire(new t.ErrorEvent(new Error(`Cannot set the zoom range of non-existing layer "${e}".`)));}setFilter(e,i,r={}){this._checkLoaded();const o=this.getLayer(e);if(o){if(!t.deepEqual(o.filter,i))return null==i?(o.filter=void 0,void this._updateLayer(o)):void(this._validate(t.validateStyle.filter,`layers.${o.id}.filter`,i,null,r)||(o.filter=t.clone$2(i),this._updateLayer(o)))}else this.fire(new t.ErrorEvent(new Error(`Cannot filter non-existing layer "${e}".`)));}getFilter(e){return t.clone$2(this.getLayer(e).filter)}setLayoutProperty(e,i,r,o={}){this._checkLoaded();const a=this.getLayer(e);a?t.deepEqual(a.getLayoutProperty(i),r)||(a.setLayoutProperty(i,r,o),this._updateLayer(a)):this.fire(new t.ErrorEvent(new Error(`Cannot style non-existing layer "${e}".`)));}getLayoutProperty(e,i){const r=this.getLayer(e);if(r)return r.getLayoutProperty(i);this.fire(new t.ErrorEvent(new Error(`Cannot get style of non-existing layer "${e}".`)));}setPaintProperty(e,i,r,o={}){this._checkLoaded();const a=this.getLayer(e);a?t.deepEqual(a.getPaintProperty(i),r)||(a.setPaintProperty(i,r,o)&&this._updateLayer(a),this._changed=!0,this._updatedPaintProps[e]=!0,this._serializedLayers=null):this.fire(new t.ErrorEvent(new Error(`Cannot style non-existing layer "${e}".`)));}getPaintProperty(e,t){return this.getLayer(e).getPaintProperty(t)}setFeatureState(e,i){this._checkLoaded();const r=e.source,o=e.sourceLayer,a=this.sourceCaches[r];if(void 0===a)return void this.fire(new t.ErrorEvent(new Error(`The source '${r}' does not exist in the map's style.`)));const s=a.getSource().type;"geojson"===s&&o?this.fire(new t.ErrorEvent(new Error("GeoJSON sources cannot have a sourceLayer parameter."))):"vector"!==s||o?(void 0===e.id&&this.fire(new t.ErrorEvent(new Error("The feature id parameter must be provided."))),a.setFeatureState(o,e.id,i)):this.fire(new t.ErrorEvent(new Error("The sourceLayer parameter must be provided for vector source types.")));}removeFeatureState(e,i){this._checkLoaded();const r=e.source,o=this.sourceCaches[r];if(void 0===o)return void this.fire(new t.ErrorEvent(new Error(`The source '${r}' does not exist in the map's style.`)));const a=o.getSource().type,s="vector"===a?e.sourceLayer:void 0;"vector"!==a||s?i&&"string"!=typeof e.id&&"number"!=typeof e.id?this.fire(new t.ErrorEvent(new Error("A feature id is required to remove its specific state property."))):o.removeFeatureState(s,e.id,i):this.fire(new t.ErrorEvent(new Error("The sourceLayer parameter must be provided for vector source types.")));}getFeatureState(e){this._checkLoaded();const i=e.source,r=e.sourceLayer,o=this.sourceCaches[i];if(void 0!==o)return "vector"!==o.getSource().type||r?(void 0===e.id&&this.fire(new t.ErrorEvent(new Error("The feature id parameter must be provided."))),o.getFeatureState(r,e.id)):void this.fire(new t.ErrorEvent(new Error("The sourceLayer parameter must be provided for vector source types.")));this.fire(new t.ErrorEvent(new Error(`The source '${i}' does not exist in the map's style.`)));}getTransition(){return t.extend({duration:300,delay:0},this.stylesheet&&this.stylesheet.transition)}serialize(){if(!this._loaded)return;const e=t.mapObject(this.sourceCaches,(e=>e.serialize())),i=this._serializeByIds(this._order,!0),r=this.map.getTerrain()||void 0,o=this.stylesheet;return t.filterObject({version:o.version,name:o.name,metadata:o.metadata,light:o.light,sky:o.sky,center:o.center,zoom:o.zoom,bearing:o.bearing,pitch:o.pitch,sprite:o.sprite,glyphs:o.glyphs,transition:o.transition,projection:o.projection,sources:e,layers:i,terrain:r},(e=>void 0!==e))}_updateLayer(e){this._updatedLayers[e.id]=!0,e.source&&!this._updatedSources[e.source]&&"raster"!==this.sourceCaches[e.source].getSource().type&&(this._updatedSources[e.source]="reload",this.sourceCaches[e.source].pause()),this._serializedLayers=null,this._changed=!0;}_flattenAndSortRenderedFeatures(e){const t=e=>"fill-extrusion"===this._layers[e].type,i={},r=[];for(let o=this._order.length-1;o>=0;o--){const a=this._order[o];if(t(a)){i[a]=o;for(const t of e){const e=t[a];if(e)for(const t of e)r.push(t);}}}r.sort(((e,t)=>t.intersectionZ-e.intersectionZ));const o=[];for(let a=this._order.length-1;a>=0;a--){const s=this._order[a];if(t(s))for(let e=r.length-1;e>=0;e--){const t=r[e].feature;if(i[t.layer.id]{const r=i.featureSortOrder;if(r){const i=r.indexOf(e.featureIndex);return r.indexOf(t.featureIndex)-i}return t.featureIndex-e.featureIndex}));for(const e of o)t.push(e);}}for(const t in n)n[t].forEach((r=>{const o=r.feature,a=i[e[t].source].getFeatureState(o.layer["source-layer"],o.id);o.source=o.layer.source,o.layer["source-layer"]&&(o.sourceLayer=o.layer["source-layer"]),o.state=a;}));return n}(this._layers,s,this.sourceCaches,e,l,this.placement.collisionIndex,this.placement.retainedQueryData)),this._flattenAndSortRenderedFeatures(a)}querySourceFeatures(e,i){i&&i.filter&&this._validate(t.validateStyle.filter,"querySourceFeatures.filter",i.filter,null,i);const r=this.sourceCaches[e];return r?function(e,t){const i=e.getRenderableIds().map((t=>e.getTileByID(t))),r=[],o={};for(let e=0;ee.getTileByID(t))).sort(((e,t)=>t.tileID.overscaledZ-e.tileID.overscaledZ||(e.tileID.isLessThan(t.tileID)?-1:1)));}const r=this.crossTileSymbolIndex.addLayer(i,n[i.source],e.center.lng);a=a||r;}if(this.crossTileSymbolIndex.pruneUnusedLayers(this._order),((o=o||this._layerOrderChanged||0===i)||!this.pauseablePlacement||this.pauseablePlacement.isDone()&&!this.placement.stillRecent(f.now(),e.zoom))&&(this.pauseablePlacement=new dt(e,this.map.terrain,this._order,o,t,i,r,this.placement),this._layerOrderChanged=!1),this.pauseablePlacement.isDone()?this.placement.setStale():(this.pauseablePlacement.continuePlacement(this._order,this._layers,n),this.pauseablePlacement.isDone()&&(this.placement=this.pauseablePlacement.commit(f.now()),s=!0),a&&this.pauseablePlacement.placement.setStale()),s||a)for(const e of this._order){const t=this._layers[e];"symbol"===t.type&&this.placement.updateLayerOpacities(t,n[t.source]);}return !this.pauseablePlacement.isDone()||this.placement.hasTransitions(f.now())}_releaseSymbolFadeTiles(){for(const e in this.sourceCaches)this.sourceCaches[e].releaseSymbolFadeTiles();}getImages(e,i){return t.__awaiter(this,void 0,void 0,(function*(){const e=yield this.imageManager.getImages(i.icons);this._updateTilesForChangedImages();const t=this.sourceCaches[i.source];return t&&t.setDependencies(i.tileID.key,i.type,i.icons),e}))}getGlyphs(e,i){return t.__awaiter(this,void 0,void 0,(function*(){const e=yield this.glyphManager.getGlyphs(i.stacks),t=this.sourceCaches[i.source];return t&&t.setDependencies(i.tileID.key,i.type,[""]),e}))}getGlyphsUrl(){return this.stylesheet.glyphs||null}setGlyphs(e,i={}){this._checkLoaded(),e&&this._validate(t.validateStyle.glyphs,"glyphs",e,null,i)||(this._glyphsDidChange=!0,this.stylesheet.glyphs=e,this.glyphManager.entries={},this.glyphManager.setURL(e));}addSprite(e,i,r={},o){this._checkLoaded();const a=[{id:e,url:i}],s=[...g(this.stylesheet.sprite),...a];this._validate(t.validateStyle.sprite,"sprite",s,null,r)||(this.stylesheet.sprite=s,this._loadSprite(a,!0,o));}removeSprite(e){this._checkLoaded();const i=g(this.stylesheet.sprite);if(i.find((t=>t.id===e))){if(this._spritesImagesIds[e])for(const t of this._spritesImagesIds[e])this.imageManager.removeImage(t),this._changedImages[t]=!0;i.splice(i.findIndex((t=>t.id===e)),1),this.stylesheet.sprite=i.length>0?i:void 0,delete this._spritesImagesIds[e],this._availableImages=this.imageManager.listImages(),this._changed=!0,this.dispatcher.broadcast("SI",this._availableImages),this.fire(new t.Event("data",{dataType:"style"}));}else this.fire(new t.ErrorEvent(new Error(`Sprite "${e}" doesn't exists on this map.`)));}getSprite(){return g(this.stylesheet.sprite)}setSprite(e,i={},r){this._checkLoaded(),e&&this._validate(t.validateStyle.sprite,"sprite",e,null,i)||(this.stylesheet.sprite=e,e?this._loadSprite(e,!0,r):(this._unloadSprite(),r&&r(null)));}}class vi{constructor(e){this._transformRequestFn=e;}transformRequest(e,t){return this._transformRequestFn&&this._transformRequestFn(e,t)||{url:e}}setTransformRequest(e){this._transformRequestFn=e;}}class yi extends t.Evented{constructor(){super(),this._requestManager=new vi,this.transform=new Ft;}getPixelRatio(){return devicePixelRatio}setTerrain(){}_getMapId(){return 1}}class xi{constructor(e,i){this.styleJSON=e,this.sourceID=i,this.layerIndex=new t.StyleLayerIndex(t.derefLayers(this.styleJSON.layers)),this.glyphs={},this.icons={};}loadImages(e){return t.__awaiter(this,void 0,void 0,(function*(){const t=JSON.stringify(e);return this.icons[t]||(this.icons[t]=yield this.style.getImages("",e)),this.icons[t]}))}loadGlyphs(e){return t.__awaiter(this,void 0,void 0,(function*(){const t=JSON.stringify(e);return this.glyphs[t]||(this.glyphs[t]=yield this.style.getGlyphs("",e)),this.glyphs[t]}))}setup(){const e=this;return this.actor={sendAsync(t){if("GI"===t.type)return e.loadImages(t.data);if("GG"===t.type)return e.loadGlyphs(t.data);throw new Error(`Invalid action ${t.type}`)}},Promise.all([(t=this.styleJSON,new Promise(((e,i)=>{const r=new yi,o=new gi(r);r.style=o,o.loadJSON(t),o.on("style.load",(()=>e(o))),o.on("error",i);}))),fetch(this.styleJSON.sources[this.sourceID].url).then((e=>e.json()))]).then((([e,t])=>{this.style=e,this.tileJSON=t;}));var t;}fetchTile(e){return fetch(e.canonical.url(this.tileJSON.tiles,devicePixelRatio)).then((e=>e.arrayBuffer())).then((t=>({tileID:e,buffer:t})))}parseTile(e,i){const r=new t.WorkerTile({type:"benchmark",tileID:e.tileID,zoom:e.tileID.overscaledZ,tileSize:512,showCollisionBoxes:!1,source:this.sourceID,uid:"0",maxZoom:22,pixelRatio:1,request:{url:""},returnDependencies:i,promoteId:void 0,subdivisionGranularity:t.SubdivisionGranularitySetting.noSubdivision}),o=new t.mvt.VectorTile(new t.Protobuf(e.buffer));return r.parse(o,this.layerIndex,[],this.actor,t.SubdivisionGranularitySetting.noSubdivision)}}class bi extends a{constructor(e,i){super(),this.style=e,this.tileIDs=i||[new t.OverscaledTileID(12,0,12,655,1583),new t.OverscaledTileID(8,0,8,40,98),new t.OverscaledTileID(4,0,4,3,6),new t.OverscaledTileID(0,0,0,0,0)];}setup(){return t.__awaiter(this,void 0,void 0,(function*(){const e=yield s(this.style);this.parser=new xi(e,"openmaptiles"),yield this.parser.setup(),this.tiles=yield Promise.all(this.tileIDs.map((e=>this.parser.fetchTile(e)))),yield Promise.all(this.tiles.map((e=>this.parser.parseTile(e))));}))}bench(){return t.__awaiter(this,void 0,void 0,(function*(){for(const e of this.tiles)yield this.parser.parseTile(e);}))}}class wi{static testProp(e){if(!wi.docStyle)return e[0];for(let t=0;t{window.removeEventListener("click",wi.suppressClickInternal,!0);}),0);}static getScale(e){const t=e.getBoundingClientRect();return {x:t.width/e.offsetWidth||1,y:t.height/e.offsetHeight||1,boundingClientRect:t}}static getPoint(e,i,r){const o=i.boundingClientRect;return new t.Point((r.clientX-o.left)/i.x-e.clientLeft,(r.clientY-o.top)/i.y-e.clientTop)}static mousePos(e,t){const i=wi.getScale(e);return wi.getPoint(e,i,t)}static touchPos(e,t){const i=[],r=wi.getScale(e);for(let o=0;o({u_texture:0,u_ele_delta:e,u_fog_matrix:i,u_fog_color:r?r.properties.get("fog-color"):t.Color.white,u_fog_ground_blend:r?r.properties.get("fog-ground-blend"):1,u_fog_ground_blend_opacity:a?0:r?r.calculateFogBlendOpacity(o):0,u_horizon_color:r?r.properties.get("horizon-color"):t.Color.white,u_horizon_fog_blend:r?r.properties.get("horizon-fog-blend"):1,u_is_globe_mode:a?1:0}),Ci={mainMatrix:"u_projection_matrix",tileMercatorCoords:"u_projection_tile_mercator_coords",clippingPlane:"u_projection_clipping_plane",projectionTransition:"u_projection_transition",fallbackMatrix:"u_projection_fallback_matrix"};function Mi(e){const t=[];for(let i=0;i({u_depth:new t.Uniform1i(e,i.u_depth),u_terrain:new t.Uniform1i(e,i.u_terrain),u_terrain_dim:new t.Uniform1f(e,i.u_terrain_dim),u_terrain_matrix:new t.UniformMatrix4f(e,i.u_terrain_matrix),u_terrain_unpack:new t.Uniform4f(e,i.u_terrain_unpack),u_terrain_exaggeration:new t.Uniform1f(e,i.u_terrain_exaggeration)}))(e,E),this.projectionUniforms=((e,i)=>({u_projection_matrix:new t.UniformMatrix4f(e,i.u_projection_matrix),u_projection_tile_mercator_coords:new t.Uniform4f(e,i.u_projection_tile_mercator_coords),u_projection_clipping_plane:new t.Uniform4f(e,i.u_projection_clipping_plane),u_projection_transition:new t.Uniform1f(e,i.u_projection_transition),u_projection_fallback_matrix:new t.UniformMatrix4f(e,i.u_projection_fallback_matrix)}))(e,E),this.binderUniforms=r?r.getUniforms(e,E):[];}draw(e,t,i,r,o,a,s,n,l,c,h,u,d,_,p,m,f,g,v){const y=e.gl;if(this.failedToCreate)return;if(e.program.set(this.program),e.setDepthMode(i),e.setStencilMode(r),e.setColorMode(o),e.setCullFace(a),n){e.activeTexture.set(y.TEXTURE2),y.bindTexture(y.TEXTURE_2D,n.depthTexture),e.activeTexture.set(y.TEXTURE3),y.bindTexture(y.TEXTURE_2D,n.texture);for(const e in this.terrainUniforms)this.terrainUniforms[e].set(n[e]);}if(l)for(const e in l)this.projectionUniforms[Ci[e]].set(l[e]);if(s)for(const e in this.fixedUniforms)this.fixedUniforms[e].set(s[e]);m&&m.setUniforms(e,this.binderUniforms,_,{zoom:p});let x=0;switch(t){case y.LINES:x=2;break;case y.TRIANGLES:x=3;break;case y.LINE_STRIP:x=1;}for(const i of d.get()){const r=i.vaos||(i.vaos={});(r[c]||(r[c]=new Pi)).bind(e,this,h,m?m.getPaintVertexBuffers():[],u,i.vertexOffset,f,g,v),y.drawElements(t,i.primitiveLength*x,y.UNSIGNED_SHORT,i.primitiveOffset*x*2);}}}function Ri(e,i,r){const o=1/t.pixelsToTileUnits(r,1,i.transform.tileZoom),a=Math.pow(2,r.tileID.overscaledZ),s=r.tileSize*Math.pow(2,i.transform.tileZoom)/a,n=s*(r.tileID.canonical.x+r.tileID.wrap*a),l=s*r.tileID.canonical.y;return {u_image:0,u_texsize:r.imageAtlasTexture.size,u_scale:[o,e.fromScale,e.toScale],u_fade:e.t,u_pixel_coord_upper:[n>>16,l>>16],u_pixel_coord_lower:[65535&n,65535&l]}}const Di=(e,i,r,o)=>{const a=e.style.light,s=a.properties.get("position"),n=[s.x,s.y,s.z],l=t.create$2();"viewport"===a.properties.get("anchor")&&t.fromRotation(l,e.transform.bearingInRadians),t.transformMat3(n,n,l);const c=e.transform.transformLightDirection(n),h=a.properties.get("color");return {u_lightpos:n,u_lightpos_globe:c,u_lightintensity:a.properties.get("intensity"),u_lightcolor:[h.r,h.g,h.b],u_vertical_gradient:+i,u_opacity:r,u_fill_translate:o}},zi=(e,i,r,o,a,s,n)=>t.extend(Di(e,i,r,o),Ri(s,e,n),{u_height_factor:-Math.pow(2,a.overscaledZ)/n.tileSize/8}),Li=(e,i,r,o)=>t.extend(Ri(i,e,r),{u_fill_translate:o}),Ai=(e,t)=>({u_world:e,u_fill_translate:t}),ki=(e,i,r,o,a)=>t.extend(Li(e,i,r,a),{u_world:o}),Fi=(e,i,r,o,a)=>{const s=e.transform;let n,l,c=0;if("map"===r.paint.get("circle-pitch-alignment")){const e=t.pixelsToTileUnits(i,1,s.zoom);n=!0,l=[e,e],c=e/(t.EXTENT*Math.pow(2,i.tileID.overscaledZ))*2*Math.PI*a;}else n=!1,l=s.pixelsToGLUnits;return {u_camera_to_center_distance:s.cameraToCenterDistance,u_scale_with_map:+("map"===r.paint.get("circle-pitch-scale")),u_pitch_with_map:+n,u_device_pixel_ratio:e.pixelRatio,u_extrude_scale:l,u_globe_extrude_scale:c,u_translate:o}},Bi=e=>({u_pixel_extrude_scale:[1/e.width,1/e.height]}),Oi=e=>({u_viewport_size:[e.width,e.height]}),Ui=(e,t=1)=>({u_color:e,u_overlay:0,u_overlay_scale:t}),ji=(e,i,r,o)=>{const a=t.pixelsToTileUnits(e,1,i)/(t.EXTENT*Math.pow(2,e.tileID.overscaledZ))*2*Math.PI*o;return {u_extrude_scale:t.pixelsToTileUnits(e,1,i),u_intensity:r,u_globe_extrude_scale:a}},Ni=(e,i,r,o)=>{const a=t.create();t.ortho(a,0,e.width,e.height,0,0,1);const s=e.context.gl;return {u_matrix:a,u_world:[s.drawingBufferWidth,s.drawingBufferHeight],u_image:r,u_color_ramp:o,u_opacity:i.paint.get("heatmap-opacity")}},Gi=(e,t,i)=>{const r=i.paint.get("hillshade-shadow-color"),o=i.paint.get("hillshade-highlight-color"),a=i.paint.get("hillshade-accent-color");let s=i.paint.get("hillshade-illumination-direction")*(Math.PI/180);return "viewport"===i.paint.get("hillshade-illumination-anchor")&&(s+=e.transform.bearingInRadians),{u_image:0,u_latrange:Vi(0,t.tileID),u_light:[i.paint.get("hillshade-exaggeration"),s],u_shadow:r,u_highlight:o,u_accent:a}},Zi=(e,i)=>{const r=i.stride,o=t.create();return t.ortho(o,0,t.EXTENT,-t.EXTENT,0,0,1),t.translate(o,o,[0,-t.EXTENT,0]),{u_matrix:o,u_image:1,u_dimension:[r,r],u_zoom:e.overscaledZ,u_unpack:i.getUnpackVector()}};function Vi(e,i){const r=Math.pow(2,i.canonical.z),o=i.canonical.y;return [new t.MercatorCoordinate(0,o/r).toLngLat().lat,new t.MercatorCoordinate(0,(o+1)/r).toLngLat().lat]}const qi=(e,i,r,o)=>{const a=e.transform;return {u_translation:Ki(e,i,r),u_ratio:o/t.pixelsToTileUnits(i,1,a.zoom),u_device_pixel_ratio:e.pixelRatio,u_units_to_pixels:[1/a.pixelsToGLUnits[0],1/a.pixelsToGLUnits[1]]}},Wi=(e,i,r,o,a)=>t.extend(qi(e,i,r,o),{u_image:0,u_image_height:a}),Xi=(e,i,r,o,a)=>{const s=e.transform,n=Hi(i,s);return {u_translation:Ki(e,i,r),u_texsize:i.imageAtlasTexture.size,u_ratio:o/t.pixelsToTileUnits(i,1,s.zoom),u_device_pixel_ratio:e.pixelRatio,u_image:0,u_scale:[n,a.fromScale,a.toScale],u_fade:a.t,u_units_to_pixels:[1/s.pixelsToGLUnits[0],1/s.pixelsToGLUnits[1]]}},$i=(e,i,r,o,a,s)=>{const n=e.lineAtlas,l=Hi(i,e.transform),c="round"===r.layout.get("line-cap"),h=n.getDash(a.from,c),u=n.getDash(a.to,c),d=h.width*s.fromScale,_=u.width*s.toScale;return t.extend(qi(e,i,r,o),{u_patternscale_a:[l/d,-h.height/2],u_patternscale_b:[l/_,-u.height/2],u_sdfgamma:n.width/(256*Math.min(d,_)*e.pixelRatio)/2,u_image:0,u_tex_y_a:h.y,u_tex_y_b:u.y,u_mix:s.t})};function Hi(e,i){return 1/t.pixelsToTileUnits(e,1,i.tileZoom)}function Ki(e,i,r){return t.translatePosition(e.transform,i,r.paint.get("line-translate"),r.paint.get("line-translate-anchor"))}const Yi=(e,t,i,r,o)=>{return {u_tl_parent:e,u_scale_parent:t,u_buffer_scale:1,u_fade_t:i.mix,u_opacity:i.opacity*r.paint.get("raster-opacity"),u_image0:0,u_image1:1,u_brightness_low:r.paint.get("raster-brightness-min"),u_brightness_high:r.paint.get("raster-brightness-max"),u_saturation_factor:(s=r.paint.get("raster-saturation"),s>0?1-1/(1.001-s):-s),u_contrast_factor:(a=r.paint.get("raster-contrast"),a>0?1/(1-a):1+a),u_spin_weights:Ji(r.paint.get("raster-hue-rotate")),u_coords_top:[o[0].x,o[0].y,o[1].x,o[1].y],u_coords_bottom:[o[3].x,o[3].y,o[2].x,o[2].y]};var a,s;};function Ji(e){e*=Math.PI/180;const t=Math.sin(e),i=Math.cos(e);return [(2*i+1)/3,(-Math.sqrt(3)*t-i+1)/3,(Math.sqrt(3)*t-i+1)/3]}const Qi=(e,t,i,r,o,a,s,n,l,c,h,u,d)=>{const _=s.transform;return {u_is_size_zoom_constant:+("constant"===e||"source"===e),u_is_size_feature_constant:+("constant"===e||"camera"===e),u_size_t:t?t.uSizeT:0,u_size:t?t.uSize:0,u_camera_to_center_distance:_.cameraToCenterDistance,u_pitch:_.pitch/360*2*Math.PI,u_rotate_symbol:+i,u_aspect_ratio:_.width/_.height,u_fade_change:s.options.fadeDuration?s.symbolFadeChange:1,u_label_plane_matrix:n,u_coord_matrix:l,u_is_text:+h,u_pitch_with_map:+r,u_is_along_line:o,u_is_variable_anchor:a,u_texsize:u,u_texture:0,u_translation:c,u_pitched_scale:d}},er=(e,i,r,o,a,s,n,l,c,h,u,d,_,p)=>{const m=n.transform;return t.extend(Qi(e,i,r,o,a,s,n,l,c,h,u,d,p),{u_gamma_scale:o?Math.cos(m.pitch*Math.PI/180)*m.cameraToCenterDistance:1,u_device_pixel_ratio:n.pixelRatio,u_is_halo:+_})},tr=(e,i,r,o,a,s,n,l,c,h,u,d,_)=>t.extend(er(e,i,r,o,a,s,n,l,c,h,!0,u,!0,_),{u_texsize_icon:d,u_texture_icon:1}),ir=(e,t)=>({u_opacity:e,u_color:t}),rr=(e,i,r,o,a)=>t.extend(function(e,i,r,o){const a=r.imageManager.getPattern(e.from.toString()),s=r.imageManager.getPattern(e.to.toString()),{width:n,height:l}=r.imageManager.getPixelSize(),c=Math.pow(2,o.tileID.overscaledZ),h=o.tileSize*Math.pow(2,r.transform.tileZoom)/c,u=h*(o.tileID.canonical.x+o.tileID.wrap*c),d=h*o.tileID.canonical.y;return {u_image:0,u_pattern_tl_a:a.tl,u_pattern_br_a:a.br,u_pattern_tl_b:s.tl,u_pattern_br_b:s.br,u_texsize:[n,l],u_mix:i.t,u_pattern_size_a:a.displaySize,u_pattern_size_b:s.displaySize,u_scale_a:i.fromScale,u_scale_b:i.toScale,u_tile_units_to_pixels:1/t.pixelsToTileUnits(o,1,r.transform.tileZoom),u_pixel_coord_upper:[u>>16,d>>16],u_pixel_coord_lower:[65535&u,65535&d]}}(r,a,i,o),{u_opacity:e}),or=(e,t)=>{},ar={fillExtrusion:(e,i)=>({u_lightpos:new t.Uniform3f(e,i.u_lightpos),u_lightpos_globe:new t.Uniform3f(e,i.u_lightpos_globe),u_lightintensity:new t.Uniform1f(e,i.u_lightintensity),u_lightcolor:new t.Uniform3f(e,i.u_lightcolor),u_vertical_gradient:new t.Uniform1f(e,i.u_vertical_gradient),u_opacity:new t.Uniform1f(e,i.u_opacity),u_fill_translate:new t.Uniform2f(e,i.u_fill_translate)}),fillExtrusionPattern:(e,i)=>({u_lightpos:new t.Uniform3f(e,i.u_lightpos),u_lightpos_globe:new t.Uniform3f(e,i.u_lightpos_globe),u_lightintensity:new t.Uniform1f(e,i.u_lightintensity),u_lightcolor:new t.Uniform3f(e,i.u_lightcolor),u_vertical_gradient:new t.Uniform1f(e,i.u_vertical_gradient),u_height_factor:new t.Uniform1f(e,i.u_height_factor),u_opacity:new t.Uniform1f(e,i.u_opacity),u_fill_translate:new t.Uniform2f(e,i.u_fill_translate),u_image:new t.Uniform1i(e,i.u_image),u_texsize:new t.Uniform2f(e,i.u_texsize),u_pixel_coord_upper:new t.Uniform2f(e,i.u_pixel_coord_upper),u_pixel_coord_lower:new t.Uniform2f(e,i.u_pixel_coord_lower),u_scale:new t.Uniform3f(e,i.u_scale),u_fade:new t.Uniform1f(e,i.u_fade)}),fill:(e,i)=>({u_fill_translate:new t.Uniform2f(e,i.u_fill_translate)}),fillPattern:(e,i)=>({u_image:new t.Uniform1i(e,i.u_image),u_texsize:new t.Uniform2f(e,i.u_texsize),u_pixel_coord_upper:new t.Uniform2f(e,i.u_pixel_coord_upper),u_pixel_coord_lower:new t.Uniform2f(e,i.u_pixel_coord_lower),u_scale:new t.Uniform3f(e,i.u_scale),u_fade:new t.Uniform1f(e,i.u_fade),u_fill_translate:new t.Uniform2f(e,i.u_fill_translate)}),fillOutline:(e,i)=>({u_world:new t.Uniform2f(e,i.u_world),u_fill_translate:new t.Uniform2f(e,i.u_fill_translate)}),fillOutlinePattern:(e,i)=>({u_world:new t.Uniform2f(e,i.u_world),u_image:new t.Uniform1i(e,i.u_image),u_texsize:new t.Uniform2f(e,i.u_texsize),u_pixel_coord_upper:new t.Uniform2f(e,i.u_pixel_coord_upper),u_pixel_coord_lower:new t.Uniform2f(e,i.u_pixel_coord_lower),u_scale:new t.Uniform3f(e,i.u_scale),u_fade:new t.Uniform1f(e,i.u_fade),u_fill_translate:new t.Uniform2f(e,i.u_fill_translate)}),circle:(e,i)=>({u_camera_to_center_distance:new t.Uniform1f(e,i.u_camera_to_center_distance),u_scale_with_map:new t.Uniform1i(e,i.u_scale_with_map),u_pitch_with_map:new t.Uniform1i(e,i.u_pitch_with_map),u_extrude_scale:new t.Uniform2f(e,i.u_extrude_scale),u_device_pixel_ratio:new t.Uniform1f(e,i.u_device_pixel_ratio),u_globe_extrude_scale:new t.Uniform1f(e,i.u_globe_extrude_scale),u_translate:new t.Uniform2f(e,i.u_translate)}),collisionBox:(e,i)=>({u_pixel_extrude_scale:new t.Uniform2f(e,i.u_pixel_extrude_scale)}),collisionCircle:(e,i)=>({u_viewport_size:new t.Uniform2f(e,i.u_viewport_size)}),debug:(e,i)=>({u_color:new t.UniformColor(e,i.u_color),u_overlay:new t.Uniform1i(e,i.u_overlay),u_overlay_scale:new t.Uniform1f(e,i.u_overlay_scale)}),depth:or,clippingMask:or,heatmap:(e,i)=>({u_extrude_scale:new t.Uniform1f(e,i.u_extrude_scale),u_intensity:new t.Uniform1f(e,i.u_intensity),u_globe_extrude_scale:new t.Uniform1f(e,i.u_globe_extrude_scale)}),heatmapTexture:(e,i)=>({u_matrix:new t.UniformMatrix4f(e,i.u_matrix),u_world:new t.Uniform2f(e,i.u_world),u_image:new t.Uniform1i(e,i.u_image),u_color_ramp:new t.Uniform1i(e,i.u_color_ramp),u_opacity:new t.Uniform1f(e,i.u_opacity)}),hillshade:(e,i)=>({u_image:new t.Uniform1i(e,i.u_image),u_latrange:new t.Uniform2f(e,i.u_latrange),u_light:new t.Uniform2f(e,i.u_light),u_shadow:new t.UniformColor(e,i.u_shadow),u_highlight:new t.UniformColor(e,i.u_highlight),u_accent:new t.UniformColor(e,i.u_accent)}),hillshadePrepare:(e,i)=>({u_matrix:new t.UniformMatrix4f(e,i.u_matrix),u_image:new t.Uniform1i(e,i.u_image),u_dimension:new t.Uniform2f(e,i.u_dimension),u_zoom:new t.Uniform1f(e,i.u_zoom),u_unpack:new t.Uniform4f(e,i.u_unpack)}),line:(e,i)=>({u_translation:new t.Uniform2f(e,i.u_translation),u_ratio:new t.Uniform1f(e,i.u_ratio),u_device_pixel_ratio:new t.Uniform1f(e,i.u_device_pixel_ratio),u_units_to_pixels:new t.Uniform2f(e,i.u_units_to_pixels)}),lineGradient:(e,i)=>({u_translation:new t.Uniform2f(e,i.u_translation),u_ratio:new t.Uniform1f(e,i.u_ratio),u_device_pixel_ratio:new t.Uniform1f(e,i.u_device_pixel_ratio),u_units_to_pixels:new t.Uniform2f(e,i.u_units_to_pixels),u_image:new t.Uniform1i(e,i.u_image),u_image_height:new t.Uniform1f(e,i.u_image_height)}),linePattern:(e,i)=>({u_translation:new t.Uniform2f(e,i.u_translation),u_texsize:new t.Uniform2f(e,i.u_texsize),u_ratio:new t.Uniform1f(e,i.u_ratio),u_device_pixel_ratio:new t.Uniform1f(e,i.u_device_pixel_ratio),u_image:new t.Uniform1i(e,i.u_image),u_units_to_pixels:new t.Uniform2f(e,i.u_units_to_pixels),u_scale:new t.Uniform3f(e,i.u_scale),u_fade:new t.Uniform1f(e,i.u_fade)}),lineSDF:(e,i)=>({u_translation:new t.Uniform2f(e,i.u_translation),u_ratio:new t.Uniform1f(e,i.u_ratio),u_device_pixel_ratio:new t.Uniform1f(e,i.u_device_pixel_ratio),u_units_to_pixels:new t.Uniform2f(e,i.u_units_to_pixels),u_patternscale_a:new t.Uniform2f(e,i.u_patternscale_a),u_patternscale_b:new t.Uniform2f(e,i.u_patternscale_b),u_sdfgamma:new t.Uniform1f(e,i.u_sdfgamma),u_image:new t.Uniform1i(e,i.u_image),u_tex_y_a:new t.Uniform1f(e,i.u_tex_y_a),u_tex_y_b:new t.Uniform1f(e,i.u_tex_y_b),u_mix:new t.Uniform1f(e,i.u_mix)}),raster:(e,i)=>({u_tl_parent:new t.Uniform2f(e,i.u_tl_parent),u_scale_parent:new t.Uniform1f(e,i.u_scale_parent),u_buffer_scale:new t.Uniform1f(e,i.u_buffer_scale),u_fade_t:new t.Uniform1f(e,i.u_fade_t),u_opacity:new t.Uniform1f(e,i.u_opacity),u_image0:new t.Uniform1i(e,i.u_image0),u_image1:new t.Uniform1i(e,i.u_image1),u_brightness_low:new t.Uniform1f(e,i.u_brightness_low),u_brightness_high:new t.Uniform1f(e,i.u_brightness_high),u_saturation_factor:new t.Uniform1f(e,i.u_saturation_factor),u_contrast_factor:new t.Uniform1f(e,i.u_contrast_factor),u_spin_weights:new t.Uniform3f(e,i.u_spin_weights),u_coords_top:new t.Uniform4f(e,i.u_coords_top),u_coords_bottom:new t.Uniform4f(e,i.u_coords_bottom)}),symbolIcon:(e,i)=>({u_is_size_zoom_constant:new t.Uniform1i(e,i.u_is_size_zoom_constant),u_is_size_feature_constant:new t.Uniform1i(e,i.u_is_size_feature_constant),u_size_t:new t.Uniform1f(e,i.u_size_t),u_size:new t.Uniform1f(e,i.u_size),u_camera_to_center_distance:new t.Uniform1f(e,i.u_camera_to_center_distance),u_pitch:new t.Uniform1f(e,i.u_pitch),u_rotate_symbol:new t.Uniform1i(e,i.u_rotate_symbol),u_aspect_ratio:new t.Uniform1f(e,i.u_aspect_ratio),u_fade_change:new t.Uniform1f(e,i.u_fade_change),u_label_plane_matrix:new t.UniformMatrix4f(e,i.u_label_plane_matrix),u_coord_matrix:new t.UniformMatrix4f(e,i.u_coord_matrix),u_is_text:new t.Uniform1i(e,i.u_is_text),u_pitch_with_map:new t.Uniform1i(e,i.u_pitch_with_map),u_is_along_line:new t.Uniform1i(e,i.u_is_along_line),u_is_variable_anchor:new t.Uniform1i(e,i.u_is_variable_anchor),u_texsize:new t.Uniform2f(e,i.u_texsize),u_texture:new t.Uniform1i(e,i.u_texture),u_translation:new t.Uniform2f(e,i.u_translation),u_pitched_scale:new t.Uniform1f(e,i.u_pitched_scale)}),symbolSDF:(e,i)=>({u_is_size_zoom_constant:new t.Uniform1i(e,i.u_is_size_zoom_constant),u_is_size_feature_constant:new t.Uniform1i(e,i.u_is_size_feature_constant),u_size_t:new t.Uniform1f(e,i.u_size_t),u_size:new t.Uniform1f(e,i.u_size),u_camera_to_center_distance:new t.Uniform1f(e,i.u_camera_to_center_distance),u_pitch:new t.Uniform1f(e,i.u_pitch),u_rotate_symbol:new t.Uniform1i(e,i.u_rotate_symbol),u_aspect_ratio:new t.Uniform1f(e,i.u_aspect_ratio),u_fade_change:new t.Uniform1f(e,i.u_fade_change),u_label_plane_matrix:new t.UniformMatrix4f(e,i.u_label_plane_matrix),u_coord_matrix:new t.UniformMatrix4f(e,i.u_coord_matrix),u_is_text:new t.Uniform1i(e,i.u_is_text),u_pitch_with_map:new t.Uniform1i(e,i.u_pitch_with_map),u_is_along_line:new t.Uniform1i(e,i.u_is_along_line),u_is_variable_anchor:new t.Uniform1i(e,i.u_is_variable_anchor),u_texsize:new t.Uniform2f(e,i.u_texsize),u_texture:new t.Uniform1i(e,i.u_texture),u_gamma_scale:new t.Uniform1f(e,i.u_gamma_scale),u_device_pixel_ratio:new t.Uniform1f(e,i.u_device_pixel_ratio),u_is_halo:new t.Uniform1i(e,i.u_is_halo),u_translation:new t.Uniform2f(e,i.u_translation),u_pitched_scale:new t.Uniform1f(e,i.u_pitched_scale)}),symbolTextAndIcon:(e,i)=>({u_is_size_zoom_constant:new t.Uniform1i(e,i.u_is_size_zoom_constant),u_is_size_feature_constant:new t.Uniform1i(e,i.u_is_size_feature_constant),u_size_t:new t.Uniform1f(e,i.u_size_t),u_size:new t.Uniform1f(e,i.u_size),u_camera_to_center_distance:new t.Uniform1f(e,i.u_camera_to_center_distance),u_pitch:new t.Uniform1f(e,i.u_pitch),u_rotate_symbol:new t.Uniform1i(e,i.u_rotate_symbol),u_aspect_ratio:new t.Uniform1f(e,i.u_aspect_ratio),u_fade_change:new t.Uniform1f(e,i.u_fade_change),u_label_plane_matrix:new t.UniformMatrix4f(e,i.u_label_plane_matrix),u_coord_matrix:new t.UniformMatrix4f(e,i.u_coord_matrix),u_is_text:new t.Uniform1i(e,i.u_is_text),u_pitch_with_map:new t.Uniform1i(e,i.u_pitch_with_map),u_is_along_line:new t.Uniform1i(e,i.u_is_along_line),u_is_variable_anchor:new t.Uniform1i(e,i.u_is_variable_anchor),u_texsize:new t.Uniform2f(e,i.u_texsize),u_texsize_icon:new t.Uniform2f(e,i.u_texsize_icon),u_texture:new t.Uniform1i(e,i.u_texture),u_texture_icon:new t.Uniform1i(e,i.u_texture_icon),u_gamma_scale:new t.Uniform1f(e,i.u_gamma_scale),u_device_pixel_ratio:new t.Uniform1f(e,i.u_device_pixel_ratio),u_is_halo:new t.Uniform1i(e,i.u_is_halo),u_translation:new t.Uniform2f(e,i.u_translation),u_pitched_scale:new t.Uniform1f(e,i.u_pitched_scale)}),background:(e,i)=>({u_opacity:new t.Uniform1f(e,i.u_opacity),u_color:new t.UniformColor(e,i.u_color)}),backgroundPattern:(e,i)=>({u_opacity:new t.Uniform1f(e,i.u_opacity),u_image:new t.Uniform1i(e,i.u_image),u_pattern_tl_a:new t.Uniform2f(e,i.u_pattern_tl_a),u_pattern_br_a:new t.Uniform2f(e,i.u_pattern_br_a),u_pattern_tl_b:new t.Uniform2f(e,i.u_pattern_tl_b),u_pattern_br_b:new t.Uniform2f(e,i.u_pattern_br_b),u_texsize:new t.Uniform2f(e,i.u_texsize),u_mix:new t.Uniform1f(e,i.u_mix),u_pattern_size_a:new t.Uniform2f(e,i.u_pattern_size_a),u_pattern_size_b:new t.Uniform2f(e,i.u_pattern_size_b),u_scale_a:new t.Uniform1f(e,i.u_scale_a),u_scale_b:new t.Uniform1f(e,i.u_scale_b),u_pixel_coord_upper:new t.Uniform2f(e,i.u_pixel_coord_upper),u_pixel_coord_lower:new t.Uniform2f(e,i.u_pixel_coord_lower),u_tile_units_to_pixels:new t.Uniform1f(e,i.u_tile_units_to_pixels)}),terrain:(e,i)=>({u_texture:new t.Uniform1i(e,i.u_texture),u_ele_delta:new t.Uniform1f(e,i.u_ele_delta),u_fog_matrix:new t.UniformMatrix4f(e,i.u_fog_matrix),u_fog_color:new t.UniformColor(e,i.u_fog_color),u_fog_ground_blend:new t.Uniform1f(e,i.u_fog_ground_blend),u_fog_ground_blend_opacity:new t.Uniform1f(e,i.u_fog_ground_blend_opacity),u_horizon_color:new t.UniformColor(e,i.u_horizon_color),u_horizon_fog_blend:new t.Uniform1f(e,i.u_horizon_fog_blend),u_is_globe_mode:new t.Uniform1f(e,i.u_is_globe_mode)}),terrainDepth:(e,i)=>({u_ele_delta:new t.Uniform1f(e,i.u_ele_delta)}),terrainCoords:(e,i)=>({u_texture:new t.Uniform1i(e,i.u_texture),u_terrain_coords_id:new t.Uniform1f(e,i.u_terrain_coords_id),u_ele_delta:new t.Uniform1f(e,i.u_ele_delta)}),projectionErrorMeasurement:(e,i)=>({u_input:new t.Uniform1f(e,i.u_input),u_output_expected:new t.Uniform1f(e,i.u_output_expected)}),atmosphere:(e,i)=>({u_sun_pos:new t.Uniform3f(e,i.u_sun_pos),u_atmosphere_blend:new t.Uniform1f(e,i.u_atmosphere_blend),u_globe_position:new t.Uniform3f(e,i.u_globe_position),u_globe_radius:new t.Uniform1f(e,i.u_globe_radius),u_inv_proj_matrix:new t.UniformMatrix4f(e,i.u_inv_proj_matrix)}),sky:(e,i)=>({u_sky_color:new t.UniformColor(e,i.u_sky_color),u_horizon_color:new t.UniformColor(e,i.u_horizon_color),u_horizon:new t.Uniform2f(e,i.u_horizon),u_horizon_normal:new t.Uniform2f(e,i.u_horizon_normal),u_sky_horizon_blend:new t.Uniform1f(e,i.u_sky_horizon_blend),u_sky_blend:new t.Uniform1f(e,i.u_sky_blend)})};class sr{constructor(e,t,i){this.context=e;const r=e.gl;this.buffer=r.createBuffer(),this.dynamicDraw=Boolean(i),this.context.unbindVAO(),e.bindElementBuffer.set(this.buffer),r.bufferData(r.ELEMENT_ARRAY_BUFFER,t.arrayBuffer,this.dynamicDraw?r.DYNAMIC_DRAW:r.STATIC_DRAW),this.dynamicDraw||delete t.arrayBuffer;}bind(){this.context.bindElementBuffer.set(this.buffer);}updateData(e){const t=this.context.gl;if(!this.dynamicDraw)throw new Error("Attempted to update data while not in dynamic mode.");this.context.unbindVAO(),this.bind(),t.bufferSubData(t.ELEMENT_ARRAY_BUFFER,0,e.arrayBuffer);}destroy(){this.buffer&&(this.context.gl.deleteBuffer(this.buffer),delete this.buffer);}}const nr={Int8:"BYTE",Uint8:"UNSIGNED_BYTE",Int16:"SHORT",Uint16:"UNSIGNED_SHORT",Int32:"INT",Uint32:"UNSIGNED_INT",Float32:"FLOAT"};class lr{constructor(e,t,i,r){this.length=t.length,this.attributes=i,this.itemSize=t.bytesPerElement,this.dynamicDraw=r,this.context=e;const o=e.gl;this.buffer=o.createBuffer(),e.bindVertexBuffer.set(this.buffer),o.bufferData(o.ARRAY_BUFFER,t.arrayBuffer,this.dynamicDraw?o.DYNAMIC_DRAW:o.STATIC_DRAW),this.dynamicDraw||delete t.arrayBuffer;}bind(){this.context.bindVertexBuffer.set(this.buffer);}updateData(e){if(e.length!==this.length)throw new Error(`Length of new data is ${e.length}, which doesn't match current length of ${this.length}`);const t=this.context.gl;this.bind(),t.bufferSubData(t.ARRAY_BUFFER,0,e.arrayBuffer);}enableAttributes(e,t){for(let i=0;i0&&(h.push({circleArray:f,circleOffset:d,coord:_}),u+=f.length/4,d=u),m&&c.draw(s,l.LINES,Zt.disabled,qt.disabled,e.colorModeForRenderPass(),Gt.disabled,Bi(e.transform),e.style.map.terrain&&e.style.map.terrain.getTerrainData(_),n.getProjectionData({overscaledTileID:_,applyGlobeMatrix:!0,applyTerrainMatrix:!0}),r.id,m.layoutVertexBuffer,m.indexBuffer,m.segments,null,e.transform.zoom,null,null,m.collisionVertexBuffer);}if(!a||!h.length)return;const _=e.useProgram("collisionCircle"),p=new t.CollisionCircleLayoutArray;p.resize(4*u),p._trim();let m=0;for(const e of h)for(let t=0;t=0&&(f[g.associatedIconIndex]={shiftedAnchor:M,angle:S});}else Ve(g.numGlyphs,p);}if(c){m.clear();const i=e.icon.placedSymbolArray;for(let e=0;ee.style.map.terrain.getElevation(l,t,i):null,i="map"===r.layout.get("text-rotation-alignment");De(c,e,a,O,U,v,h,i,l.toUnwrapped(),f.width,f.height,N,t);}const q=a&&E||V,W=y||q?Hr:v?O:e.transform.clipSpaceToPixelsMatrix,X=p&&0!==r.paint.get(a?"text-halo-width":"icon-halo-width").constantOr(1);let $;$=p?c.iconsInText?tr(T.kind,S,x,v,y,q,e,W,j,N,D,k,I):er(T.kind,S,x,v,y,q,e,W,j,N,a,D,!0,I):Qi(T.kind,S,x,v,y,q,e,W,j,N,a,D,I);const H={program:M,buffers:u,uniformValues:$,projectionData:G,atlasTexture:z,atlasTextureIcon:F,atlasInterpolation:L,atlasInterpolationIcon:A,isSDF:p,hasHalo:X};if(b&&c.canOverlap){w=!0;const e=u.segments.get();for(const i of e)P.push({segments:new t.SegmentVector([i]),sortKey:i.sortKey,state:H,terrainData:R});}else P.push({segments:u.segments,sortKey:0,state:H,terrainData:R});}w&&P.sort(((e,t)=>e.sortKey-t.sortKey));for(const t of P){const i=t.state;if(p.activeTexture.set(m.TEXTURE0),i.atlasTexture.bind(i.atlasInterpolation,m.CLAMP_TO_EDGE),i.atlasTextureIcon&&(p.activeTexture.set(m.TEXTURE1),i.atlasTextureIcon&&i.atlasTextureIcon.bind(i.atlasInterpolationIcon,m.CLAMP_TO_EDGE)),i.isSDF){const o=i.uniformValues;i.hasHalo&&(o.u_is_halo=1,to(i.buffers,t.segments,r,e,i.program,T,u,d,o,i.projectionData,t.terrainData)),o.u_is_halo=0;}to(i.buffers,t.segments,r,e,i.program,T,u,d,i.uniformValues,i.projectionData,t.terrainData);}}function to(e,t,i,r,o,a,s,n,l,c,h){const u=r.context;o.draw(u,u.gl.TRIANGLES,a,s,n,Gt.backCCW,l,h,c,i.id,e.layoutVertexBuffer,e.indexBuffer,t,i.paint,r.transform.zoom,e.programConfigurations.get(i.id),e.dynamicLayoutVertexBuffer,e.opacityVertexBuffer);}function io(e,i,r,o,a){const s=e.context,n=s.gl,l=qt.disabled,c=new jt([n.ONE,n.ONE],t.Color.transparent,[!0,!0,!0,!0]),h=i.getBucket(r);if(!h)return;const u=o.key;let d=r.heatmapFbos.get(u);d||(d=oo(s,i.tileSize,i.tileSize),r.heatmapFbos.set(u,d)),s.bindFramebuffer.set(d.framebuffer),s.viewport.set([0,0,i.tileSize,i.tileSize]),s.clear({color:t.Color.transparent});const _=h.programConfigurations.get(r.id),p=e.useProgram("heatmap",_,!a),m=e.transform.getProjectionData({overscaledTileID:i.tileID,applyGlobeMatrix:!0,applyTerrainMatrix:!0}),f=e.style.map.terrain.getTerrainData(o);p.draw(s,n.TRIANGLES,Zt.disabled,l,c,Gt.disabled,ji(i,e.transform.zoom,r.paint.get("heatmap-intensity"),1),f,m,r.id,h.layoutVertexBuffer,h.indexBuffer,h.segments,r.paint,e.transform.zoom,_);}function ro(e,t,i,r,o){const a=e.context,s=a.gl,n=e.transform;a.setColorMode(e.colorModeForRenderPass());const l=ao(a,t),c=i.key,h=t.heatmapFbos.get(c);if(!h)return;a.activeTexture.set(s.TEXTURE0),s.bindTexture(s.TEXTURE_2D,h.colorAttachment.get()),a.activeTexture.set(s.TEXTURE1),l.bind(s.LINEAR,s.CLAMP_TO_EDGE);const u=n.getProjectionData({overscaledTileID:i,applyTerrainMatrix:o,applyGlobeMatrix:!r});e.useProgram("heatmapTexture").draw(a,s.TRIANGLES,Zt.disabled,qt.disabled,e.colorModeForRenderPass(),Gt.disabled,Ni(e,t,0,1),null,u,t.id,e.rasterBoundsBuffer,e.quadTriangleIndexBuffer,e.rasterBoundsSegments,t.paint,n.zoom),h.destroy(),t.heatmapFbos.delete(c);}function oo(e,t,i){var r,o;const a=e.gl,s=a.createTexture();a.bindTexture(a.TEXTURE_2D,s),a.texParameteri(a.TEXTURE_2D,a.TEXTURE_WRAP_S,a.CLAMP_TO_EDGE),a.texParameteri(a.TEXTURE_2D,a.TEXTURE_WRAP_T,a.CLAMP_TO_EDGE),a.texParameteri(a.TEXTURE_2D,a.TEXTURE_MIN_FILTER,a.LINEAR),a.texParameteri(a.TEXTURE_2D,a.TEXTURE_MAG_FILTER,a.LINEAR);const n=null!==(r=e.HALF_FLOAT)&&void 0!==r?r:a.UNSIGNED_BYTE,l=null!==(o=e.RGBA16F)&&void 0!==o?o:a.RGBA;a.texImage2D(a.TEXTURE_2D,0,l,t,i,0,a.RGBA,n,null);const c=e.createFramebuffer(t,i,!1,!1);return c.colorAttachment.set(s),c}function ao(e,t){return t.colorRampTexture||(t.colorRampTexture=new y(e,t.colorRamp,e.gl.RGBA)),t.colorRampTexture}function so(e,t,i,r,o){if(!i||!r||!r.imageAtlas)return;const a=r.imageAtlas.patternPositions;let s=a[i.to.toString()],n=a[i.from.toString()];if(!s&&n&&(s=n),!n&&s&&(n=s),!s||!n){const e=o.getPaintProperty(t);s=a[e],n=a[e];}s&&n&&e.setConstantPatternPositions(s,n);}function no(e,i,r,o,a,s,n,l){const c=e.context.gl,h="fill-pattern",u=r.paint.get(h),d=u&&u.constantOr(1),_=r.getCrossfadeParameters();let p,m,f,g,v;const y=e.transform,x=r.paint.get("fill-translate"),b=r.paint.get("fill-translate-anchor");n?(m=d&&!r.getPaintProperty("fill-outline-color")?"fillOutlinePattern":"fillOutline",p=c.LINES):(m=d?"fillPattern":"fill",p=c.TRIANGLES);const w=u.constantOr(null);for(const u of o){const T=i.getTile(u);if(d&&!T.patternsLoaded())continue;const E=T.getBucket(r);if(!E)continue;const P=E.programConfigurations.get(r.id),I=e.useProgram(m,P),C=e.style.map.terrain&&e.style.map.terrain.getTerrainData(u);d&&(e.context.activeTexture.set(c.TEXTURE0),T.imageAtlasTexture.bind(c.LINEAR,c.CLAMP_TO_EDGE),P.updatePaintBuffers(_)),so(P,h,w,T,r);const M=y.getProjectionData({overscaledTileID:u,applyGlobeMatrix:!l,applyTerrainMatrix:!0}),S=t.translatePosition(y,T,x,b);if(n){g=E.indexBuffer2,v=E.segments2;const t=[c.drawingBufferWidth,c.drawingBufferHeight];f="fillOutlinePattern"===m&&d?ki(e,_,T,t,S):Ai(t,S);}else g=E.indexBuffer,v=E.segments,f=d?Li(e,_,T,S):{u_fill_translate:S};let R;if("translucent"===e.renderPass&&l){const[t]=e.getStencilConfigForOverlapAndUpdateStencilID(o);R=t[u.overscaledZ];}else R=e.stencilModeForClipping(u);I.draw(e.context,p,a,R,s,Gt.backCCW,f,C,M,r.id,E.layoutVertexBuffer,g,v,r.paint,e.transform.zoom,P);}}function lo(e,i,r,o,a,s,n,l){const c=e.context,h=c.gl,u="fill-extrusion-pattern",d=r.paint.get(u),_=d.constantOr(1),p=r.getCrossfadeParameters(),m=r.paint.get("fill-extrusion-opacity"),f=d.constantOr(null),g=e.transform;for(const d of o){const o=i.getTile(d),v=o.getBucket(r);if(!v)continue;const y=e.style.map.terrain&&e.style.map.terrain.getTerrainData(d),x=v.programConfigurations.get(r.id),b=e.useProgram(_?"fillExtrusionPattern":"fillExtrusion",x);_&&(e.context.activeTexture.set(h.TEXTURE0),o.imageAtlasTexture.bind(h.LINEAR,h.CLAMP_TO_EDGE),x.updatePaintBuffers(p));const w=g.getProjectionData({overscaledTileID:d,applyGlobeMatrix:!l,applyTerrainMatrix:!0});so(x,u,f,o,r);const T=t.translatePosition(g,o,r.paint.get("fill-extrusion-translate"),r.paint.get("fill-extrusion-translate-anchor")),E=r.paint.get("fill-extrusion-vertical-gradient"),P=_?zi(e,E,m,T,d,p,o):Di(e,E,m,T);b.draw(c,c.gl.TRIANGLES,a,s,n,Gt.backCCW,P,y,w,r.id,v.layoutVertexBuffer,v.indexBuffer,v.segments,r.paint,e.transform.zoom,x,e.style.map.terrain&&v.centroidVertexBuffer);}}function co(e,t,i,r,o,a,s,n,l){var c;const h=e.style.projection,u=e.context,d=e.transform,_=u.gl,p=e.useProgram("hillshade"),m=!e.options.moving;for(const f of r){const r=t.getTile(f),g=r.fbo;if(!g)continue;const v=h.getMeshFromTileID(u,f.canonical,n,!0,"raster"),y=null===(c=e.style.map.terrain)||void 0===c?void 0:c.getTerrainData(f);u.activeTexture.set(_.TEXTURE0),_.bindTexture(_.TEXTURE_2D,g.colorAttachment.get());const x=d.getProjectionData({overscaledTileID:f,aligned:m,applyGlobeMatrix:!l,applyTerrainMatrix:!0});p.draw(u,_.TRIANGLES,a,o[f.overscaledZ],s,Gt.backCCW,Gi(e,r,i),y,x,i.id,v.vertexBuffer,v.indexBuffer,v.segments);}}const ho=[new t.Point(0,0),new t.Point(t.EXTENT,0),new t.Point(t.EXTENT,t.EXTENT),new t.Point(0,t.EXTENT)];function uo(e,t,i,r,o,a,s,n,l=!1,c=!1){const h=r[r.length-1].overscaledZ,u=e.context,d=u.gl,_=e.useProgram("raster"),p=e.transform,m=e.style.projection,f=e.colorModeForRenderPass(),g=!e.options.moving;for(const v of r){const r=e.getDepthModeForSublayer(v.overscaledZ-h,1===i.paint.get("raster-opacity")?Zt.ReadWrite:Zt.ReadOnly,d.LESS),y=t.getTile(v);y.registerFadeDuration(i.paint.get("raster-fade-duration"));const x=t.findLoadedParent(v,0),b=t.findLoadedSibling(v),w=_o(y,x||b||null,t,i,e.transform,e.style.map.terrain);let T,E;const P="nearest"===i.paint.get("raster-resampling")?d.NEAREST:d.LINEAR;u.activeTexture.set(d.TEXTURE0),y.texture.bind(P,d.CLAMP_TO_EDGE,d.LINEAR_MIPMAP_NEAREST),u.activeTexture.set(d.TEXTURE1),x?(x.texture.bind(P,d.CLAMP_TO_EDGE,d.LINEAR_MIPMAP_NEAREST),T=Math.pow(2,x.tileID.overscaledZ-y.tileID.overscaledZ),E=[y.tileID.canonical.x*T%1,y.tileID.canonical.y*T%1]):y.texture.bind(P,d.CLAMP_TO_EDGE,d.LINEAR_MIPMAP_NEAREST),y.texture.useMipmap&&u.extTextureFilterAnisotropic&&e.transform.pitch>20&&d.texParameterf(d.TEXTURE_2D,u.extTextureFilterAnisotropic.TEXTURE_MAX_ANISOTROPY_EXT,u.extTextureFilterAnisotropicMax);const I=e.style.map.terrain&&e.style.map.terrain.getTerrainData(v),C=p.getProjectionData({overscaledTileID:v,aligned:g,applyGlobeMatrix:!c,applyTerrainMatrix:!0}),M=Yi(E||[0,0],T||1,w,i,n),S=m.getMeshFromTileID(u,v.canonical,a,s,"raster");_.draw(u,d.TRIANGLES,r,o?o[v.overscaledZ]:qt.disabled,f,l?Gt.frontCCW:Gt.backCCW,M,I,C,i.id,S.vertexBuffer,S.indexBuffer,S.segments);}}function _o(e,i,r,o,a,s){const n=o.paint.get("raster-fade-duration");if(!s&&n>0){const o=f.now(),s=(o-e.timeAdded)/n,l=i?(o-i.timeAdded)/n:-1,c=r.getSource(),h=ge(a,{tileSize:c.tileSize,roundZoom:c.roundZoom}),u=!i||Math.abs(i.tileID.overscaledZ-h)>Math.abs(e.tileID.overscaledZ-h),d=u&&e.refreshedUponExpiration?1:t.clamp(u?s:1-l,0,1);return e.refreshedUponExpiration&&s>=1&&(e.refreshedUponExpiration=!1),i?{opacity:1,mix:1-d}:{opacity:d,mix:0}}return {opacity:1,mix:0}}const po=new t.Color(1,0,0,1),mo=new t.Color(0,1,0,1),fo=new t.Color(0,0,1,1),go=new t.Color(1,0,1,1),vo=new t.Color(0,1,1,1);function yo(e,t,i,r){bo(e,0,t+i/2,e.transform.width,i,r);}function xo(e,t,i,r){bo(e,t-i/2,0,i,e.transform.height,r);}function bo(e,t,i,r,o,a){const s=e.context,n=s.gl;n.enable(n.SCISSOR_TEST),n.scissor(t*e.pixelRatio,i*e.pixelRatio,r*e.pixelRatio,o*e.pixelRatio),s.clear({color:a}),n.disable(n.SCISSOR_TEST);}function wo(e,i,r){const o=e.context,a=o.gl,s=e.useProgram("debug"),n=Zt.disabled,l=qt.disabled,c=e.colorModeForRenderPass(),h="$debug",u=e.style.map.terrain&&e.style.map.terrain.getTerrainData(r);o.activeTexture.set(a.TEXTURE0);const d=i.getTileByID(r.key).latestRawTileData,_=Math.floor((d&&d.byteLength||0)/1024),p=i.getTile(r).tileSize,m=512/Math.min(p,512)*(r.overscaledZ/e.transform.zoom)*.5;let f=r.canonical.toString();r.overscaledZ!==r.canonical.z&&(f+=` => ${r.overscaledZ}`),function(e,t){e.initDebugOverlayCanvas();const i=e.debugOverlayCanvas,r=e.context.gl,o=e.debugOverlayCanvas.getContext("2d");o.clearRect(0,0,i.width,i.height),o.shadowColor="white",o.shadowBlur=2,o.lineWidth=1.5,o.strokeStyle="white",o.textBaseline="top",o.font="bold 36px Open Sans, sans-serif",o.fillText(t,5,5),o.strokeText(t,5,5),e.debugOverlayTexture.update(i),e.debugOverlayTexture.bind(r.LINEAR,r.CLAMP_TO_EDGE);}(e,`${f} ${_}kB`);const g=e.transform.getProjectionData({overscaledTileID:r,applyGlobeMatrix:!0,applyTerrainMatrix:!0});s.draw(o,a.TRIANGLES,n,l,jt.alphaBlended,Gt.disabled,Ui(t.Color.transparent,m),null,g,h,e.debugBuffer,e.quadTriangleIndexBuffer,e.debugSegments),s.draw(o,a.LINE_STRIP,n,l,c,Gt.disabled,Ui(t.Color.red),u,g,h,e.debugBuffer,e.tileBorderIndexBuffer,e.debugSegments);}function To(e,t,i,r){const{isRenderingGlobe:o}=r,a=e.context,s=a.gl,n=e.transform,l=e.colorModeForRenderPass(),c=e.getDepthModeFor3D(),h=e.useProgram("terrain"),u=t.getTerrainMesh();a.bindFramebuffer.set(null),a.viewport.set([0,0,e.width,e.height]);for(const r of i){const i=e.renderToTexture.getTexture(r),d=t.getTerrainData(r.tileID);a.activeTexture.set(s.TEXTURE0),s.bindTexture(s.TEXTURE_2D,i.texture);const _=t.getMeshFrameDelta(n.zoom),p=n.calculateFogMatrix(r.tileID.toUnwrapped()),m=Ii(_,p,e.style.sky,n.pitch,o),f=n.getProjectionData({overscaledTileID:r.tileID,applyTerrainMatrix:!1,applyGlobeMatrix:!0});h.draw(a,s.TRIANGLES,c,qt.disabled,l,Gt.backCCW,m,d,f,"terrain",u.vertexBuffer,u.indexBuffer,u.segments);}}function Eo(e,i){if(!i.mesh){const r=new t.PosArray;r.emplaceBack(-1,-1),r.emplaceBack(1,-1),r.emplaceBack(1,1),r.emplaceBack(-1,1);const o=new t.TriangleIndexArray;o.emplaceBack(0,1,2),o.emplaceBack(0,2,3),i.mesh=new bt(e.createVertexBuffer(r,wt.members),e.createIndexBuffer(o),t.SegmentVector.simpleSegment(0,0,r.length,o.length));}return i.mesh}class Po{constructor(e,i){this.context=new Wr(e),this.transform=i,this._tileTextures={},this.terrainFacilitator={dirty:!0,matrix:t.identity(new Float64Array(16)),renderTime:0},this.setup(),this.numSublayers=ye.maxUnderzooming+ye.maxOverzooming+1,this.depthEpsilon=1/Math.pow(2,16),this.crossTileSymbolIndex=new gt;}resize(e,t,i){if(this.width=Math.floor(e*i),this.height=Math.floor(t*i),this.pixelRatio=i,this.context.viewport.set([0,0,this.width,this.height]),this.style)for(const e of this.style._order)this.style._layers[e].resize();}setup(){const e=this.context,i=new t.PosArray;i.emplaceBack(0,0),i.emplaceBack(t.EXTENT,0),i.emplaceBack(0,t.EXTENT),i.emplaceBack(t.EXTENT,t.EXTENT),this.tileExtentBuffer=e.createVertexBuffer(i,wt.members),this.tileExtentSegments=t.SegmentVector.simpleSegment(0,0,4,2);const r=new t.PosArray;r.emplaceBack(0,0),r.emplaceBack(t.EXTENT,0),r.emplaceBack(0,t.EXTENT),r.emplaceBack(t.EXTENT,t.EXTENT),this.debugBuffer=e.createVertexBuffer(r,wt.members),this.debugSegments=t.SegmentVector.simpleSegment(0,0,4,5);const o=new t.RasterBoundsArray;o.emplaceBack(0,0,0,0),o.emplaceBack(t.EXTENT,0,t.EXTENT,0),o.emplaceBack(0,t.EXTENT,0,t.EXTENT),o.emplaceBack(t.EXTENT,t.EXTENT,t.EXTENT,t.EXTENT),this.rasterBoundsBuffer=e.createVertexBuffer(o,Ei.members),this.rasterBoundsSegments=t.SegmentVector.simpleSegment(0,0,4,2);const a=new t.PosArray;a.emplaceBack(0,0),a.emplaceBack(t.EXTENT,0),a.emplaceBack(0,t.EXTENT),a.emplaceBack(t.EXTENT,t.EXTENT),this.rasterBoundsBufferPosOnly=e.createVertexBuffer(a,wt.members),this.rasterBoundsSegmentsPosOnly=t.SegmentVector.simpleSegment(0,0,4,5);const s=new t.PosArray;s.emplaceBack(0,0),s.emplaceBack(1,0),s.emplaceBack(0,1),s.emplaceBack(1,1),this.viewportBuffer=e.createVertexBuffer(s,wt.members),this.viewportSegments=t.SegmentVector.simpleSegment(0,0,4,2);const n=new t.LineStripIndexArray;n.emplaceBack(0),n.emplaceBack(1),n.emplaceBack(3),n.emplaceBack(2),n.emplaceBack(0),this.tileBorderIndexBuffer=e.createIndexBuffer(n);const l=new t.TriangleIndexArray;l.emplaceBack(1,0,2),l.emplaceBack(1,2,3),this.quadTriangleIndexBuffer=e.createIndexBuffer(l);const c=this.context.gl;this.stencilClearMode=new qt({func:c.ALWAYS,mask:0},0,255,c.ZERO,c.ZERO,c.ZERO),this.tileExtentMesh=new bt(this.tileExtentBuffer,this.quadTriangleIndexBuffer,this.tileExtentSegments);}clearStencil(){const e=this.context,i=e.gl;this.nextStencilID=1,this.currentStencilSource=void 0;const r=t.create();t.ortho(r,0,this.width,this.height,0,0,1),t.scale(r,r,[i.drawingBufferWidth,i.drawingBufferHeight,0]);const o={mainMatrix:r,tileMercatorCoords:[0,0,1,1],clippingPlane:[0,0,0,0],projectionTransition:0,fallbackMatrix:r};this.useProgram("clippingMask",null,!0).draw(e,i.TRIANGLES,Zt.disabled,this.stencilClearMode,jt.disabled,Gt.disabled,null,null,o,"$clipping",this.viewportBuffer,this.quadTriangleIndexBuffer,this.viewportSegments);}_renderTileClippingMasks(e,t,i){if(this.currentStencilSource===e.source||!e.isTileClipped()||!t||!t.length)return;this.currentStencilSource=e.source,this.nextStencilID+t.length>256&&this.clearStencil();const r=this.context;r.setColorMode(jt.disabled),r.setDepthMode(Zt.disabled);const o={};for(const e of t)o[e.key]=this.nextStencilID++;this._renderTileMasks(o,t,i,!0),this._renderTileMasks(o,t,i,!1),this._tileClippingMaskIDs=o;}_renderTileMasks(e,t,i,r){const o=this.context,a=o.gl,s=this.style.projection,n=this.transform,l=this.useProgram("clippingMask");for(const c of t){const t=e[c.key],h=this.style.map.terrain&&this.style.map.terrain.getTerrainData(c),u=s.getMeshFromTileID(this.context,c.canonical,r,!0,"stencil"),d=n.getProjectionData({overscaledTileID:c,applyGlobeMatrix:!0,applyTerrainMatrix:!0});l.draw(o,a.TRIANGLES,Zt.disabled,new qt({func:a.ALWAYS,mask:0},t,255,a.KEEP,a.KEEP,a.REPLACE),jt.disabled,i?Gt.disabled:Gt.backCCW,null,h,d,"$clipping",u.vertexBuffer,u.indexBuffer,u.segments);}}_renderTilesDepthBuffer(){const e=this.context,t=e.gl,i=this.style.projection,r=this.transform,o=this.useProgram("depth"),a=this.getDepthModeFor3D(),s=ve(r,{tileSize:r.tileSize});for(const n of s){const s=this.style.map.terrain&&this.style.map.terrain.getTerrainData(n),l=i.getMeshFromTileID(this.context,n.canonical,!0,!0,"raster"),c=r.getProjectionData({overscaledTileID:n,applyGlobeMatrix:!0,applyTerrainMatrix:!0});o.draw(e,t.TRIANGLES,a,qt.disabled,jt.disabled,Gt.backCCW,null,s,c,"$clipping",l.vertexBuffer,l.indexBuffer,l.segments);}}stencilModeFor3D(){this.currentStencilSource=void 0,this.nextStencilID+1>256&&this.clearStencil();const e=this.nextStencilID++,t=this.context.gl;return new qt({func:t.NOTEQUAL,mask:255},e,255,t.KEEP,t.KEEP,t.REPLACE)}stencilModeForClipping(e){const t=this.context.gl;return new qt({func:t.EQUAL,mask:255},this._tileClippingMaskIDs[e.key],0,t.KEEP,t.KEEP,t.REPLACE)}getStencilConfigForOverlapAndUpdateStencilID(e){const t=this.context.gl,i=e.sort(((e,t)=>t.overscaledZ-e.overscaledZ)),r=i[i.length-1].overscaledZ,o=i[0].overscaledZ-r+1;if(o>1){this.currentStencilSource=void 0,this.nextStencilID+o>256&&this.clearStencil();const e={};for(let i=0;it.overscaledZ-e.overscaledZ)),r=i[i.length-1].overscaledZ,o=i[0].overscaledZ-r+1;if(this.clearStencil(),o>1){const e={},a={};for(let i=0;ithis.useProgram(e)}),this.context.viewport.set([0,0,this.width,this.height]),this.context.bindFramebuffer.set(null),this.context.clear({color:i.showOverdrawInspector?t.Color.black:t.Color.transparent,depth:1}),this.clearStencil(),this.style.sky&&function(e,t){const i=e.context,r=i.gl,o=((e,t,i)=>{const r=Math.cos(t.rollInRadians),o=Math.sin(t.rollInRadians),a=Rt(t),s=t.getProjectionData({overscaledTileID:null,applyGlobeMatrix:!0,applyTerrainMatrix:!0}).projectionTransition;return {u_sky_color:e.properties.get("sky-color"),u_horizon_color:e.properties.get("horizon-color"),u_horizon:[(t.width/2-a*o)*i,(t.height/2+a*r)*i],u_horizon_normal:[-o,r],u_sky_horizon_blend:e.properties.get("sky-horizon-blend")*t.height/2*i,u_sky_blend:s}})(t,e.style.map.transform,e.pixelRatio),a=new Zt(r.LEQUAL,Zt.ReadWrite,[0,1]),s=qt.disabled,n=e.colorModeForRenderPass(),l=e.useProgram("sky"),c=Eo(i,t);l.draw(i,r.TRIANGLES,a,s,n,Gt.disabled,o,null,void 0,"sky",c.vertexBuffer,c.indexBuffer,c.segments);}(this,this.style.sky),this._showOverdrawInspector=i.showOverdrawInspector,this.depthRangeFor3D=[0,1-(e._order.length+2)*this.numSublayers*this.depthEpsilon],!this.renderToTexture)for(this.renderPass="opaque",this.currentLayer=r.length-1;this.currentLayer>=0;this.currentLayer--){const e=this.style._layers[r[this.currentLayer]],t=o[e.source],i=a[e.source];this._renderTileClippingMasks(e,i,!1),this.renderLayer(this,t,e,i,l);}this.renderPass="translucent";let c=!1;for(this.currentLayer=0;this.currentLayer({u_sun_pos:e,u_atmosphere_blend:t,u_globe_position:i,u_globe_radius:r,u_inv_proj_matrix:o}))(c,u,[p[0],p[1],p[2]],d,_),f=Eo(o,i);s.draw(o,a.TRIANGLES,n,qt.disabled,jt.alphaBlended,Gt.disabled,m,null,null,"atmosphere",f.vertexBuffer,f.indexBuffer,f.segments);}(this,this.style.sky,this.style.light),this.options.showTileBoundaries){const e=function(e,t){let i=null;const r=Object.values(e._layers).flatMap((i=>i.source&&!i.isHidden(t)?[e.sourceCaches[i.source]]:[])),o=r.filter((e=>"vector"===e.getSource().type)),a=r.filter((e=>"vector"!==e.getSource().type)),s=e=>{(!i||i.getSource().maxzooms(e))),i||a.forEach((e=>s(e))),i}(this.style,this.transform.zoom);e&&function(e,t,i){for(let r=0;ru.getElevation(a,e,t):null;Jr(s,d,_,c,h,f,i,p,g,t.translatePosition(h,e,n,l),a.toUnwrapped(),r);}}}(o,e,r,i,r.layout.get("text-rotation-alignment"),r.layout.get("text-pitch-alignment"),r.paint.get("text-translate"),r.paint.get("text-translate-anchor"),a),0!==r.paint.get("icon-opacity").constantOr(1)&&eo(e,i,r,o,!1,r.paint.get("icon-translate"),r.paint.get("icon-translate-anchor"),r.layout.get("icon-rotation-alignment"),r.layout.get("icon-pitch-alignment"),r.layout.get("icon-keep-upright"),l,c,n),0!==r.paint.get("text-opacity").constantOr(1)&&eo(e,i,r,o,!0,r.paint.get("text-translate"),r.paint.get("text-translate-anchor"),r.layout.get("text-rotation-alignment"),r.layout.get("text-pitch-alignment"),r.layout.get("text-keep-upright"),l,c,n),i.map.showCollisionBoxes&&($r(e,i,r,o,!0),$r(e,i,r,o,!1));}(e,i,r,o,this.style.placement.variableOffsets,a):t.isCircleStyleLayer(r)?function(e,i,r,o,a){if("translucent"!==e.renderPass)return;const{isRenderingToTexture:s}=a,n=r.paint.get("circle-opacity"),l=r.paint.get("circle-stroke-width"),c=r.paint.get("circle-stroke-opacity"),h=!r.layout.get("circle-sort-key").isConstant();if(0===n.constantOr(1)&&(0===l.constantOr(1)||0===c.constantOr(1)))return;const u=e.context,d=u.gl,_=e.transform,p=e.getDepthModeForSublayer(0,Zt.ReadOnly),m=qt.disabled,f=e.colorModeForRenderPass(),g=[],v=_.getCircleRadiusCorrection();for(let a=0;ae.sortKey-t.sortKey));for(const t of g){const{programConfiguration:i,program:o,layoutVertexBuffer:a,indexBuffer:s,uniformValues:n,terrainData:l,projectionData:c}=t.state;o.draw(u,d.TRIANGLES,p,m,f,Gt.backCCW,n,l,c,r.id,a,s,t.segments,r.paint,e.transform.zoom,i);}}(e,i,r,o,a):t.isHeatmapStyleLayer(r)?function(e,i,r,o,a){if(0===r.paint.get("heatmap-opacity"))return;const s=e.context,{isRenderingToTexture:n,isRenderingGlobe:l}=a;if(e.style.map.terrain){for(const t of o){const o=i.getTile(t);i.hasRenderableParent(t)||("offscreen"===e.renderPass?io(e,o,r,t,l):"translucent"===e.renderPass&&ro(e,r,t,n,l));}s.viewport.set([0,0,e.width,e.height]);}else "offscreen"===e.renderPass?function(e,i,r,o){const a=e.context,s=a.gl,n=e.transform,l=qt.disabled,c=new jt([s.ONE,s.ONE],t.Color.transparent,[!0,!0,!0,!0]);((function(e,i,r){const o=e.gl;e.activeTexture.set(o.TEXTURE1),e.viewport.set([0,0,i.width/4,i.height/4]);let a=r.heatmapFbos.get(t.HEATMAP_FULL_RENDER_FBO_KEY);a?(o.bindTexture(o.TEXTURE_2D,a.colorAttachment.get()),e.bindFramebuffer.set(a.framebuffer)):(a=oo(e,i.width/4,i.height/4),r.heatmapFbos.set(t.HEATMAP_FULL_RENDER_FBO_KEY,a));}))(a,e,r),a.clear({color:t.Color.transparent});for(let t=0;t0?t.pop():null}isPatternMissing(e){if(!e)return !1;if(!e.from||!e.to)return !0;const t=this.imageManager.getPattern(e.from.toString()),i=this.imageManager.getPattern(e.to.toString());return !t||!i}useProgram(e,t,i=!1){this.cache=this.cache||{};const r=!!this.style.map.terrain,o=this.style.projection,a=e+(t?t.cacheKey:"")+`/${i?Et:o.shaderVariantName}`+(this._showOverdrawInspector?"/overdraw":"")+(r?"/terrain":"");return this.cache[a]||(this.cache[a]=new Si(this.context,yt[e],t,ar[e],this._showOverdrawInspector,r,i?yt.projectionMercator:o.shaderPreludeCode,i?Tt:o.shaderDefine)),this.cache[a]}setCustomLayerDefaults(){this.context.unbindVAO(),this.context.cullFace.setDefault(),this.context.activeTexture.setDefault(),this.context.pixelStoreUnpack.setDefault(),this.context.pixelStoreUnpackPremultiplyAlpha.setDefault(),this.context.pixelStoreUnpackFlipY.setDefault();}setBaseState(){const e=this.context.gl;this.context.cullFace.set(!1),this.context.viewport.set([0,0,this.width,this.height]),this.context.blendEquation.set(e.FUNC_ADD);}initDebugOverlayCanvas(){null==this.debugOverlayCanvas&&(this.debugOverlayCanvas=document.createElement("canvas"),this.debugOverlayCanvas.width=512,this.debugOverlayCanvas.height=512,this.debugOverlayTexture=new y(this.context,this.debugOverlayCanvas,this.context.gl.RGBA));}destroy(){this.debugOverlayTexture&&this.debugOverlayTexture.destroy();}overLimit(){const{drawingBufferWidth:e,drawingBufferHeight:t}=this.context.gl;return this.width!==e||this.height!==t}}function Io(e,t){let i,r=!1,o=null,a=null;const s=()=>{o=null,r&&(e.apply(a,i),o=setTimeout(s,t),r=!1);};return (...e)=>(r=!0,a=this,i=e,o||s(),o)}class Co{constructor(e){this._getCurrentHash=()=>{const e=window.location.hash.replace("#","");if(this._hashName){let t;return e.split("&").map((e=>e.split("="))).forEach((e=>{e[0]===this._hashName&&(t=e);})),(t&&t[1]||"").split("/")}return e.split("/")},this._onHashChange=()=>{const e=this._getCurrentHash();if(e.length>=3&&!e.some((e=>isNaN(e)))){const t=this._map.dragRotate.isEnabled()&&this._map.touchZoomRotate.isEnabled()?+(e[3]||0):this._map.getBearing();return this._map.jumpTo({center:[+e[2],+e[1]],zoom:+e[0],bearing:t,pitch:+(e[4]||0)}),!0}return !1},this._updateHashUnthrottled=()=>{const e=window.location.href.replace(/(#.*)?$/,this.getHashString());window.history.replaceState(window.history.state,null,e);},this._removeHash=()=>{const e=this._getCurrentHash();if(0===e.length)return;const t=e.join("/");let i=t;i.split("&").length>0&&(i=i.split("&")[0]),this._hashName&&(i=`${this._hashName}=${t}`);let r=window.location.hash.replace(i,"");r.startsWith("#&")?r=r.slice(0,1)+r.slice(2):"#"===r&&(r="");let o=window.location.href.replace(/(#.+)?$/,r);o=o.replace("&&","&"),window.history.replaceState(window.history.state,null,o);},this._updateHash=Io(this._updateHashUnthrottled,300),this._hashName=e&&encodeURIComponent(e);}addTo(e){return this._map=e,addEventListener("hashchange",this._onHashChange,!1),this._map.on("moveend",this._updateHash),this}remove(){return removeEventListener("hashchange",this._onHashChange,!1),this._map.off("moveend",this._updateHash),clearTimeout(this._updateHash()),this._removeHash(),delete this._map,this}getHashString(e){const t=this._map.getCenter(),i=Math.round(100*this._map.getZoom())/100,r=Math.ceil((i*Math.LN2+Math.log(512/360/.5))/Math.LN10),o=Math.pow(10,r),a=Math.round(t.lng*o)/o,s=Math.round(t.lat*o)/o,n=this._map.getBearing(),l=this._map.getPitch();let c="";if(c+=e?`/${a}/${s}/${i}`:`${i}/${s}/${a}`,(n||l)&&(c+="/"+Math.round(10*n)/10),l&&(c+=`/${Math.round(l)}`),this._hashName){const e=this._hashName;let t=!1;const i=window.location.hash.slice(1).split("&").map((i=>{const r=i.split("=")[0];return r===e?(t=!0,`${r}=${c}`):i})).filter((e=>e));return t||i.push(`${e}=${c}`),`#${i.join("&")}`}return `#${c}`}}const Mo={linearity:.3,easing:t.bezier(0,0,.3,1)},So=t.extend({deceleration:2500,maxSpeed:1400},Mo),Ro=t.extend({deceleration:20,maxSpeed:1400},Mo),Do=t.extend({deceleration:1e3,maxSpeed:360},Mo),zo=t.extend({deceleration:1e3,maxSpeed:90},Mo),Lo=t.extend({deceleration:1e3,maxSpeed:360},Mo);class Ao{constructor(e){this._map=e,this.clear();}clear(){this._inertiaBuffer=[];}record(e){this._drainInertiaBuffer(),this._inertiaBuffer.push({time:f.now(),settings:e});}_drainInertiaBuffer(){const e=this._inertiaBuffer,t=f.now();for(;e.length>0&&t-e[0].time>160;)e.shift();}_onMoveEnd(e){if(this._drainInertiaBuffer(),this._inertiaBuffer.length<2)return;const i={zoom:0,bearing:0,pitch:0,roll:0,pan:new t.Point(0,0),pinchAround:void 0,around:void 0};for(const{settings:e}of this._inertiaBuffer)i.zoom+=e.zoomDelta||0,i.bearing+=e.bearingDelta||0,i.pitch+=e.pitchDelta||0,i.roll+=e.rollDelta||0,e.panDelta&&i.pan._add(e.panDelta),e.around&&(i.around=e.around),e.pinchAround&&(i.pinchAround=e.pinchAround);const r=this._inertiaBuffer[this._inertiaBuffer.length-1].time-this._inertiaBuffer[0].time,o={};if(i.pan.mag()){const a=Fo(i.pan.mag(),r,t.extend({},So,e||{})),s=i.pan.mult(a.amount/i.pan.mag()),n=this._map.cameraHelper.handlePanInertia(s,this._map.transform);o.center=n.easingCenter,o.offset=n.easingOffset,ko(o,a);}if(i.zoom){const e=Fo(i.zoom,r,Ro);o.zoom=this._map.transform.zoom+e.amount,ko(o,e);}if(i.bearing){const e=Fo(i.bearing,r,Do);o.bearing=this._map.transform.bearing+t.clamp(e.amount,-179,179),ko(o,e);}if(i.pitch){const e=Fo(i.pitch,r,zo);o.pitch=this._map.transform.pitch+e.amount,ko(o,e);}if(i.roll){const e=Fo(i.roll,r,Lo);o.roll=this._map.transform.roll+t.clamp(e.amount,-179,179),ko(o,e);}if(o.zoom||o.bearing){const e=void 0===i.pinchAround?i.around:i.pinchAround;o.around=e?this._map.unproject(e):this._map.getCenter();}return this.clear(),t.extend(o,{noMoveStart:!0})}}function ko(e,t){(!e.duration||e.durationi.unproject(e))),n=a.reduce(((e,t,i,r)=>e.add(t.div(r.length))),new t.Point(0,0));super(e,{points:a,point:n,lngLats:s,lngLat:i.unproject(n),originalEvent:r}),this._defaultPrevented=!1;}}class Uo extends t.Event{preventDefault(){this._defaultPrevented=!0;}get defaultPrevented(){return this._defaultPrevented}constructor(e,t,i){super(e,{originalEvent:i}),this._defaultPrevented=!1;}}class jo{constructor(e,t){this._map=e,this._clickTolerance=t.clickTolerance;}reset(){delete this._mousedownPos;}wheel(e){return this._firePreventable(new Uo(e.type,this._map,e))}mousedown(e,t){return this._mousedownPos=t,this._firePreventable(new Bo(e.type,this._map,e))}mouseup(e){this._map.fire(new Bo(e.type,this._map,e));}click(e,t){this._mousedownPos&&this._mousedownPos.dist(t)>=this._clickTolerance||this._map.fire(new Bo(e.type,this._map,e));}dblclick(e){return this._firePreventable(new Bo(e.type,this._map,e))}mouseover(e){this._map.fire(new Bo(e.type,this._map,e));}mouseout(e){this._map.fire(new Bo(e.type,this._map,e));}touchstart(e){return this._firePreventable(new Oo(e.type,this._map,e))}touchmove(e){this._map.fire(new Oo(e.type,this._map,e));}touchend(e){this._map.fire(new Oo(e.type,this._map,e));}touchcancel(e){this._map.fire(new Oo(e.type,this._map,e));}_firePreventable(e){if(this._map.fire(e),e.defaultPrevented)return {}}isEnabled(){return !0}isActive(){return !1}enable(){}disable(){}}class No{constructor(e){this._map=e;}reset(){this._delayContextMenu=!1,this._ignoreContextMenu=!0,delete this._contextMenuEvent;}mousemove(e){this._map.fire(new Bo(e.type,this._map,e));}mousedown(){this._delayContextMenu=!0,this._ignoreContextMenu=!1;}mouseup(){this._delayContextMenu=!1,this._contextMenuEvent&&(this._map.fire(new Bo("contextmenu",this._map,this._contextMenuEvent)),delete this._contextMenuEvent);}contextmenu(e){this._delayContextMenu?this._contextMenuEvent=e:this._ignoreContextMenu||this._map.fire(new Bo(e.type,this._map,e)),this._map.listens("contextmenu")&&e.preventDefault();}isEnabled(){return !0}isActive(){return !1}enable(){}disable(){}}class Go{constructor(e){this._map=e;}get transform(){return this._map._requestedCameraState||this._map.transform}get center(){return {lng:this.transform.center.lng,lat:this.transform.center.lat}}get zoom(){return this.transform.zoom}get pitch(){return this.transform.pitch}get bearing(){return this.transform.bearing}unproject(e){return this.transform.screenPointToLocation(t.Point.convert(e),this._map.terrain)}}class Zo{constructor(e,t){this._map=e,this._tr=new Go(e),this._el=e.getCanvasContainer(),this._container=e.getContainer(),this._clickTolerance=t.clickTolerance||1;}isEnabled(){return !!this._enabled}isActive(){return !!this._active}enable(){this.isEnabled()||(this._enabled=!0);}disable(){this.isEnabled()&&(this._enabled=!1);}mousedown(e,t){this.isEnabled()&&e.shiftKey&&0===e.button&&(wi.disableDrag(),this._startPos=this._lastPos=t,this._active=!0);}mousemoveWindow(e,t){if(!this._active)return;const i=t;if(this._lastPos.equals(i)||!this._box&&i.dist(this._startPos)e.fitScreenCoordinates(r,o,this._tr.bearing,{linear:!0})};this._fireEvent("boxzoomcancel",e);}keydown(e){this._active&&27===e.keyCode&&(this.reset(),this._fireEvent("boxzoomcancel",e));}reset(){this._active=!1,this._container.classList.remove("maplibregl-crosshair"),this._box&&(wi.remove(this._box),this._box=null),wi.enableDrag(),delete this._startPos,delete this._lastPos;}_fireEvent(e,i){return this._map.fire(new t.Event(e,{originalEvent:i}))}}function Vo(e,t){if(e.length!==t.length)throw new Error(`The number of touches and points are not equal - touches ${e.length}, points ${t.length}`);const i={};for(let r=0;rthis.numTouches)&&(this.aborted=!0),this.aborted||(void 0===this.startTime&&(this.startTime=e.timeStamp),r.length===this.numTouches&&(this.centroid=function(e){const i=new t.Point(0,0);for(const t of e)i._add(t);return i.div(e.length)}(i),this.touches=Vo(r,i)));}touchmove(e,t,i){if(this.aborted||!this.centroid)return;const r=Vo(i,t);for(const e in this.touches){const t=r[e];(!t||t.dist(this.touches[e])>30)&&(this.aborted=!0);}}touchend(e,t,i){if((!this.centroid||e.timeStamp-this.startTime>500)&&(this.aborted=!0),0===i.length){const e=!this.aborted&&this.centroid;if(this.reset(),e)return e}}}class Wo{constructor(e){this.singleTap=new qo(e),this.numTaps=e.numTaps,this.reset();}reset(){this.lastTime=1/0,delete this.lastTap,this.count=0,this.singleTap.reset();}touchstart(e,t,i){this.singleTap.touchstart(e,t,i);}touchmove(e,t,i){this.singleTap.touchmove(e,t,i);}touchend(e,t,i){const r=this.singleTap.touchend(e,t,i);if(r){const t=e.timeStamp-this.lastTime<500,i=!this.lastTap||this.lastTap.dist(r)<30;if(t&&i||this.reset(),this.count++,this.lastTime=e.timeStamp,this.lastTap=r,this.count===this.numTaps)return this.reset(),r}}}class Xo{constructor(e){this._tr=new Go(e),this._zoomIn=new Wo({numTouches:1,numTaps:2}),this._zoomOut=new Wo({numTouches:2,numTaps:1}),this.reset();}reset(){this._active=!1,this._zoomIn.reset(),this._zoomOut.reset();}touchstart(e,t,i){this._zoomIn.touchstart(e,t,i),this._zoomOut.touchstart(e,t,i);}touchmove(e,t,i){this._zoomIn.touchmove(e,t,i),this._zoomOut.touchmove(e,t,i);}touchend(e,t,i){const r=this._zoomIn.touchend(e,t,i),o=this._zoomOut.touchend(e,t,i),a=this._tr;return r?(this._active=!0,e.preventDefault(),setTimeout((()=>this.reset()),0),{cameraAnimation:t=>t.easeTo({duration:300,zoom:a.zoom+1,around:a.unproject(r)},{originalEvent:e})}):o?(this._active=!0,e.preventDefault(),setTimeout((()=>this.reset()),0),{cameraAnimation:t=>t.easeTo({duration:300,zoom:a.zoom-1,around:a.unproject(o)},{originalEvent:e})}):void 0}touchcancel(){this.reset();}enable(){this._enabled=!0;}disable(){this._enabled=!1,this.reset();}isEnabled(){return this._enabled}isActive(){return this._active}}class $o{constructor(e){this._enabled=!!e.enable,this._moveStateManager=e.moveStateManager,this._clickTolerance=e.clickTolerance||1,this._moveFunction=e.move,this._activateOnStart=!!e.activateOnStart,e.assignEvents(this),this.reset();}reset(e){this._active=!1,this._moved=!1,delete this._lastPoint,this._moveStateManager.endMove(e);}_move(...e){const t=this._moveFunction(...e);if(t.bearingDelta||t.pitchDelta||t.rollDelta||t.around||t.panDelta)return this._active=!0,t}dragStart(e,t){this.isEnabled()&&!this._lastPoint&&this._moveStateManager.isValidStartEvent(e)&&(this._moveStateManager.startMove(e),this._lastPoint=Array.isArray(t)?t[0]:t,this._activateOnStart&&this._lastPoint&&(this._active=!0));}dragMove(e,t){if(!this.isEnabled())return;const i=this._lastPoint;if(!i)return;if(e.preventDefault(),!this._moveStateManager.isValidMoveEvent(e))return void this.reset(e);const r=Array.isArray(t)?t[0]:t;return !this._moved&&r.dist(i)!0}),t=new Yo){this.mouseMoveStateManager=e,this.oneFingerTouchMoveStateManager=t;}startMove(e){e instanceof MouseEvent&&this.mouseMoveStateManager.startMove(e),e instanceof TouchEvent&&this.oneFingerTouchMoveStateManager.startMove(e);}endMove(e){e instanceof MouseEvent&&this.mouseMoveStateManager.endMove(e),e instanceof TouchEvent&&this.oneFingerTouchMoveStateManager.endMove(e);}isValidStartEvent(e){return e instanceof MouseEvent?this.mouseMoveStateManager.isValidStartEvent(e):e instanceof TouchEvent?this.oneFingerTouchMoveStateManager.isValidStartEvent(e):void 0}isValidMoveEvent(e){return e instanceof MouseEvent?this.mouseMoveStateManager.isValidMoveEvent(e):e instanceof TouchEvent?this.oneFingerTouchMoveStateManager.isValidMoveEvent(e):void 0}isValidEndEvent(e){return e instanceof MouseEvent?this.mouseMoveStateManager.isValidEndEvent(e):e instanceof TouchEvent?this.oneFingerTouchMoveStateManager.isValidEndEvent(e):void 0}}const Qo=e=>{e.mousedown=e.dragStart,e.mousemoveWindow=e.dragMove,e.mouseup=e.dragEnd,e.contextmenu=e=>{e.preventDefault();};};class ea{constructor(e,t){this._clickTolerance=e.clickTolerance||1,this._map=t,this.reset();}reset(){this._active=!1,this._touches={},this._sum=new t.Point(0,0);}_shouldBePrevented(e){return e<(this._map.cooperativeGestures.isEnabled()?2:1)}touchstart(e,t,i){return this._calculateTransform(e,t,i)}touchmove(e,t,i){if(this._active){if(!this._shouldBePrevented(i.length))return e.preventDefault(),this._calculateTransform(e,t,i);this._map.cooperativeGestures.notifyGestureBlocked("touch_pan",e);}}touchend(e,t,i){this._calculateTransform(e,t,i),this._active&&this._shouldBePrevented(i.length)&&this.reset();}touchcancel(){this.reset();}_calculateTransform(e,i,r){r.length>0&&(this._active=!0);const o=Vo(r,i),a=new t.Point(0,0),s=new t.Point(0,0);let n=0;for(const e in o){const t=o[e],i=this._touches[e];i&&(a._add(t),s._add(t.sub(i)),n++,o[e]=t);}if(this._touches=o,this._shouldBePrevented(n)||!s.mag())return;const l=s.div(n);return this._sum._add(l),this._sum.mag()Math.abs(e.x)}class la extends ta{constructor(e){super(),this._currentTouchCount=0,this._map=e;}reset(){super.reset(),this._valid=void 0,delete this._firstMove,delete this._lastPoints;}touchstart(e,t,i){super.touchstart(e,t,i),this._currentTouchCount=i.length;}_start(e){this._lastPoints=e,na(e[0].sub(e[1]))&&(this._valid=!1);}_move(e,t,i){if(this._map.cooperativeGestures.isEnabled()&&this._currentTouchCount<3)return;const r=e[0].sub(this._lastPoints[0]),o=e[1].sub(this._lastPoints[1]);return this._valid=this.gestureBeginsVertically(r,o,i.timeStamp),this._valid?(this._lastPoints=e,this._active=!0,{pitchDelta:(r.y+o.y)/2*-.5}):void 0}gestureBeginsVertically(e,t,i){if(void 0!==this._valid)return this._valid;const r=e.mag()>=2,o=t.mag()>=2;if(!r&&!o)return;if(!r||!o)return void 0===this._firstMove&&(this._firstMove=i),i-this._firstMove<100&&void 0;const a=e.y>0==t.y>0;return na(e)&&na(t)&&a}}const ca={panStep:100,bearingStep:15,pitchStep:10};class ha{constructor(e){this._tr=new Go(e);const t=ca;this._panStep=t.panStep,this._bearingStep=t.bearingStep,this._pitchStep=t.pitchStep,this._rotationDisabled=!1;}reset(){this._active=!1;}keydown(e){if(e.altKey||e.ctrlKey||e.metaKey)return;let t=0,i=0,r=0,o=0,a=0;switch(e.keyCode){case 61:case 107:case 171:case 187:t=1;break;case 189:case 109:case 173:t=-1;break;case 37:e.shiftKey?i=-1:(e.preventDefault(),o=-1);break;case 39:e.shiftKey?i=1:(e.preventDefault(),o=1);break;case 38:e.shiftKey?r=1:(e.preventDefault(),a=-1);break;case 40:e.shiftKey?r=-1:(e.preventDefault(),a=1);break;default:return}return this._rotationDisabled&&(i=0,r=0),{cameraAnimation:s=>{const n=this._tr;s.easeTo({duration:300,easeId:"keyboardHandler",easing:ua,zoom:t?Math.round(n.zoom)+t*(e.shiftKey?2:1):n.zoom,bearing:n.bearing+i*this._bearingStep,pitch:n.pitch+r*this._pitchStep,offset:[-o*this._panStep,-a*this._panStep],center:n.center},{originalEvent:e});}}}enable(){this._enabled=!0;}disable(){this._enabled=!1,this.reset();}isEnabled(){return this._enabled}isActive(){return this._active}disableRotation(){this._rotationDisabled=!0;}enableRotation(){this._rotationDisabled=!1;}}function ua(e){return e*(2-e)}const da=4.000244140625;class _a{constructor(e,t){this._onTimeout=e=>{this._type="wheel",this._delta-=this._lastValue,this._active||this._start(e);},this._map=e,this._tr=new Go(e),this._triggerRenderFrame=t,this._delta=0,this._defaultZoomRate=.01,this._wheelZoomRate=.0022222222222222222;}setZoomRate(e){this._defaultZoomRate=e;}setWheelZoomRate(e){this._wheelZoomRate=e;}isEnabled(){return !!this._enabled}isActive(){return !!this._active||void 0!==this._finishTimeout}isZooming(){return !!this._zooming}enable(e){this.isEnabled()||(this._enabled=!0,this._aroundCenter=!!e&&"center"===e.around);}disable(){this.isEnabled()&&(this._enabled=!1);}_shouldBePrevented(e){return !!this._map.cooperativeGestures.isEnabled()&&!(e.ctrlKey||this._map.cooperativeGestures.isBypassed(e))}wheel(e){if(!this.isEnabled())return;if(this._shouldBePrevented(e))return void this._map.cooperativeGestures.notifyGestureBlocked("wheel_zoom",e);let t=e.deltaMode===WheelEvent.DOM_DELTA_LINE?40*e.deltaY:e.deltaY;const i=f.now(),r=i-(this._lastWheelEventTime||0);this._lastWheelEventTime=i,0!==t&&t%da==0?this._type="wheel":0!==t&&Math.abs(t)<4?this._type="trackpad":r>400?(this._type=null,this._lastValue=t,this._timeout=setTimeout(this._onTimeout,40,e)):this._type||(this._type=Math.abs(r*t)<200?"trackpad":"wheel",this._timeout&&(clearTimeout(this._timeout),this._timeout=null,t+=this._lastValue)),e.shiftKey&&t&&(t/=4),this._type&&(this._lastWheelEvent=e,this._delta-=t,this._active||this._start(e)),e.preventDefault();}_start(e){if(!this._delta)return;this._frameId&&(this._frameId=null),this._active=!0,this.isZooming()||(this._zooming=!0),this._finishTimeout&&(clearTimeout(this._finishTimeout),delete this._finishTimeout);const i=wi.mousePos(this._map.getCanvas(),e),r=this._tr;this._aroundPoint=this._aroundCenter?r.transform.locationToScreenPoint(t.LngLat.convert(r.center)):i,this._frameId||(this._frameId=!0,this._triggerRenderFrame());}renderFrame(){if(!this._frameId)return;if(this._frameId=null,!this.isActive())return;const e=this._tr.transform;if("number"==typeof this._lastExpectedZoom){const t=e.zoom-this._lastExpectedZoom;"number"==typeof this._startZoom&&(this._startZoom+=t),"number"==typeof this._targetZoom&&(this._targetZoom+=t);}if(0!==this._delta){const t="wheel"===this._type&&Math.abs(this._delta)>da?this._wheelZoomRate:this._defaultZoomRate;let i=2/(1+Math.exp(-Math.abs(this._delta*t)));this._delta<0&&0!==i&&(i=1/i);const r="number"!=typeof this._targetZoom?e.scale:ue(this._targetZoom);this._targetZoom=Math.min(e.maxZoom,Math.max(e.minZoom,de(r*i))),"wheel"===this._type&&(this._startZoom=e.zoom,this._easing=this._smoothOutEasing(200)),this._delta=0;}const i="number"!=typeof this._targetZoom?e.zoom:this._targetZoom,r=this._startZoom,o=this._easing;let a,s=!1;const n=f.now()-this._lastWheelEventTime;if("wheel"===this._type&&r&&o&&n){const e=Math.min(n/200,1),l=o(e);a=t.interpolateFactory.number(r,i,l),e<1?this._frameId||(this._frameId=!0):s=!0;}else a=i,s=!0;return this._active=!0,s&&(this._active=!1,this._finishTimeout=setTimeout((()=>{this._zooming=!1,this._triggerRenderFrame(),delete this._targetZoom,delete this._lastExpectedZoom,delete this._finishTimeout;}),200)),this._lastExpectedZoom=a,{noInertia:!0,needsRenderFrame:!s,zoomDelta:a-e.zoom,around:this._aroundPoint,originalEvent:this._lastWheelEvent}}_smoothOutEasing(e){let i=t.defaultEasing;if(this._prevEase){const e=this._prevEase,r=(f.now()-e.start)/e.duration,o=e.easing(r+.01)-e.easing(r),a=.27/Math.sqrt(o*o+1e-4)*.01,s=Math.sqrt(.0729-a*a);i=t.bezier(a,s,.25,1);}return this._prevEase={start:f.now(),duration:e,easing:i},i}reset(){this._active=!1,this._zooming=!1,delete this._targetZoom,delete this._lastExpectedZoom,this._finishTimeout&&(clearTimeout(this._finishTimeout),delete this._finishTimeout);}}class pa{constructor(e,t){this._clickZoom=e,this._tapZoom=t;}enable(){this._clickZoom.enable(),this._tapZoom.enable();}disable(){this._clickZoom.disable(),this._tapZoom.disable();}isEnabled(){return this._clickZoom.isEnabled()&&this._tapZoom.isEnabled()}isActive(){return this._clickZoom.isActive()||this._tapZoom.isActive()}}class ma{constructor(e){this._tr=new Go(e),this.reset();}reset(){this._active=!1;}dblclick(e,t){return e.preventDefault(),{cameraAnimation:i=>{i.easeTo({duration:300,zoom:this._tr.zoom+(e.shiftKey?-1:1),around:this._tr.unproject(t)},{originalEvent:e});}}}enable(){this._enabled=!0;}disable(){this._enabled=!1,this.reset();}isEnabled(){return this._enabled}isActive(){return this._active}}class fa{constructor(){this._tap=new Wo({numTouches:1,numTaps:1}),this.reset();}reset(){this._active=!1,delete this._swipePoint,delete this._swipeTouch,delete this._tapTime,delete this._tapPoint,this._tap.reset();}touchstart(e,t,i){if(!this._swipePoint)if(this._tapTime){const r=t[0],o=e.timeStamp-this._tapTime<500,a=this._tapPoint.dist(r)<30;o&&a?i.length>0&&(this._swipePoint=r,this._swipeTouch=i[0].identifier):this.reset();}else this._tap.touchstart(e,t,i);}touchmove(e,t,i){if(this._tapTime){if(this._swipePoint){if(i[0].identifier!==this._swipeTouch)return;const r=t[0],o=r.y-this._swipePoint.y;return this._swipePoint=r,e.preventDefault(),this._active=!0,{zoomDelta:o/128}}}else this._tap.touchmove(e,t,i);}touchend(e,t,i){if(this._tapTime)this._swipePoint&&0===i.length&&this.reset();else {const r=this._tap.touchend(e,t,i);r&&(this._tapTime=e.timeStamp,this._tapPoint=r);}}touchcancel(){this.reset();}enable(){this._enabled=!0;}disable(){this._enabled=!1,this.reset();}isEnabled(){return this._enabled}isActive(){return this._active}}class ga{constructor(e,t,i){this._el=e,this._mousePan=t,this._touchPan=i;}enable(e){this._inertiaOptions=e||{},this._mousePan.enable(),this._touchPan.enable(),this._el.classList.add("maplibregl-touch-drag-pan");}disable(){this._mousePan.disable(),this._touchPan.disable(),this._el.classList.remove("maplibregl-touch-drag-pan");}isEnabled(){return this._mousePan.isEnabled()&&this._touchPan.isEnabled()}isActive(){return this._mousePan.isActive()||this._touchPan.isActive()}}class va{constructor(e,t,i,r){this._pitchWithRotate=e.pitchWithRotate,this._rollEnabled=e.rollEnabled,this._mouseRotate=t,this._mousePitch=i,this._mouseRoll=r;}enable(){this._mouseRotate.enable(),this._pitchWithRotate&&this._mousePitch.enable(),this._rollEnabled&&this._mouseRoll.enable();}disable(){this._mouseRotate.disable(),this._mousePitch.disable(),this._mouseRoll.disable();}isEnabled(){return this._mouseRotate.isEnabled()&&(!this._pitchWithRotate||this._mousePitch.isEnabled())&&(!this._rollEnabled||this._mouseRoll.isEnabled())}isActive(){return this._mouseRotate.isActive()||this._mousePitch.isActive()||this._mouseRoll.isActive()}}class ya{constructor(e,t,i,r){this._el=e,this._touchZoom=t,this._touchRotate=i,this._tapDragZoom=r,this._rotationDisabled=!1,this._enabled=!0;}enable(e){this._touchZoom.enable(e),this._rotationDisabled||this._touchRotate.enable(e),this._tapDragZoom.enable(),this._el.classList.add("maplibregl-touch-zoom-rotate");}disable(){this._touchZoom.disable(),this._touchRotate.disable(),this._tapDragZoom.disable(),this._el.classList.remove("maplibregl-touch-zoom-rotate");}isEnabled(){return this._touchZoom.isEnabled()&&(this._rotationDisabled||this._touchRotate.isEnabled())&&this._tapDragZoom.isEnabled()}isActive(){return this._touchZoom.isActive()||this._touchRotate.isActive()||this._tapDragZoom.isActive()}disableRotation(){this._rotationDisabled=!0,this._touchRotate.disable();}enableRotation(){this._rotationDisabled=!1,this._touchZoom.isEnabled()&&this._touchRotate.enable();}}class xa{constructor(e,t){this._bypassKey=-1!==navigator.userAgent.indexOf("Mac")?"metaKey":"ctrlKey",this._map=e,this._options=t,this._enabled=!1;}isActive(){return !1}reset(){}_setupUI(){if(this._container)return;const e=this._map.getCanvasContainer();e.classList.add("maplibregl-cooperative-gestures"),this._container=wi.create("div","maplibregl-cooperative-gesture-screen",e);let t=this._map._getUIString("CooperativeGesturesHandler.WindowsHelpText");"metaKey"===this._bypassKey&&(t=this._map._getUIString("CooperativeGesturesHandler.MacHelpText"));const i=this._map._getUIString("CooperativeGesturesHandler.MobileHelpText"),r=document.createElement("div");r.className="maplibregl-desktop-message",r.textContent=t,this._container.appendChild(r);const o=document.createElement("div");o.className="maplibregl-mobile-message",o.textContent=i,this._container.appendChild(o),this._container.setAttribute("aria-hidden","true");}_destroyUI(){this._container&&(wi.remove(this._container),this._map.getCanvasContainer().classList.remove("maplibregl-cooperative-gestures")),delete this._container;}enable(){this._setupUI(),this._enabled=!0;}disable(){this._enabled=!1,this._destroyUI();}isEnabled(){return this._enabled}isBypassed(e){return e[this._bypassKey]}notifyGestureBlocked(e,i){this._enabled&&(this._map.fire(new t.Event("cooperativegestureprevented",{gestureType:e,originalEvent:i})),this._container.classList.add("maplibregl-show"),setTimeout((()=>{this._container.classList.remove("maplibregl-show");}),100));}}const ba=e=>e.zoom||e.drag||e.roll||e.pitch||e.rotate;class wa extends t.Event{}function Ta(e){return e.panDelta&&e.panDelta.mag()||e.zoomDelta||e.bearingDelta||e.pitchDelta||e.rollDelta}class Ea{constructor(e,t){this.handleWindowEvent=e=>{this.handleEvent(e,`${e.type}Window`);},this.handleEvent=(e,t)=>{if("blur"===e.type)return void this.stop(!0);this._updatingCamera=!0;const i="renderFrame"===e.type?void 0:e,r={needsRenderFrame:!1},o={},a={},s=e.touches,n=s?this._getMapTouches(s):void 0,l=n?wi.touchPos(this._map.getCanvas(),n):wi.mousePos(this._map.getCanvas(),e);for(const{handlerName:s,handler:c,allowed:h}of this._handlers){if(!c.isEnabled())continue;let u;this._blockedByActive(a,h,s)?c.reset():c[t||e.type]&&(u=c[t||e.type](e,l,n),this.mergeHandlerResult(r,o,u,s,i),u&&u.needsRenderFrame&&this._triggerRenderFrame()),(u||c.isActive())&&(a[s]=c);}const c={};for(const e in this._previousActiveHandlers)a[e]||(c[e]=i);this._previousActiveHandlers=a,(Object.keys(c).length||Ta(r))&&(this._changes.push([r,o,c]),this._triggerRenderFrame()),(Object.keys(a).length||Ta(r))&&this._map._stop(!0),this._updatingCamera=!1;const{cameraAnimation:h}=r;h&&(this._inertia.clear(),this._fireEvents({},{},!0),this._changes=[],h(this._map));},this._map=e,this._el=this._map.getCanvasContainer(),this._handlers=[],this._handlersById={},this._changes=[],this._inertia=new Ao(e),this._bearingSnap=t.bearingSnap,this._previousActiveHandlers={},this._eventsInProgress={},this._addDefaultHandlers(t);const i=this._el;this._listeners=[[i,"touchstart",{passive:!0}],[i,"touchmove",{passive:!1}],[i,"touchend",void 0],[i,"touchcancel",void 0],[i,"mousedown",void 0],[i,"mousemove",void 0],[i,"mouseup",void 0],[document,"mousemove",{capture:!0}],[document,"mouseup",void 0],[i,"mouseover",void 0],[i,"mouseout",void 0],[i,"dblclick",void 0],[i,"click",void 0],[i,"keydown",{capture:!1}],[i,"keyup",void 0],[i,"wheel",{passive:!1}],[i,"contextmenu",void 0],[window,"blur",void 0]];for(const[e,t,i]of this._listeners)wi.addEventListener(e,t,e===document?this.handleWindowEvent:this.handleEvent,i);}destroy(){for(const[e,t,i]of this._listeners)wi.removeEventListener(e,t,e===document?this.handleWindowEvent:this.handleEvent,i);}_addDefaultHandlers(e){const i=this._map,r=i.getCanvasContainer();this._add("mapEvent",new jo(i,e));const o=i.boxZoom=new Zo(i,e);this._add("boxZoom",o),e.interactive&&e.boxZoom&&o.enable();const a=i.cooperativeGestures=new xa(i,e.cooperativeGestures);this._add("cooperativeGestures",a),e.cooperativeGestures&&a.enable();const s=new Xo(i),n=new ma(i);i.doubleClickZoom=new pa(n,s),this._add("tapZoom",s),this._add("clickZoom",n),e.interactive&&e.doubleClickZoom&&i.doubleClickZoom.enable();const l=new fa;this._add("tapDragZoom",l);const c=i.touchPitch=new la(i);this._add("touchPitch",c),e.interactive&&e.touchPitch&&i.touchPitch.enable(e.touchPitch);const h=()=>i.project(i.getCenter()),u=function({enable:e,clickTolerance:i,aroundCenter:r=!0,minPixelCenterThreshold:o=100,rotateDegreesPerPixelMoved:a=.8},s){const n=new Ko({checkCorrectEvent:e=>0===wi.mouseButton(e)&&e.ctrlKey||2===wi.mouseButton(e)&&!e.ctrlKey});return new $o({clickTolerance:i,move:(e,i)=>{const n=s();if(r&&Math.abs(n.y-e.y)>o)return {bearingDelta:t.getAngleDelta(new t.Point(e.x,i.y),i,n)};let l=(i.x-e.x)*a;return r&&i.y0===wi.mouseButton(e)&&e.ctrlKey||2===wi.mouseButton(e)});return new $o({clickTolerance:t,move:(e,t)=>({pitchDelta:(t.y-e.y)*i}),moveStateManager:r,enable:e,assignEvents:Qo})}(e),_=function({enable:e,clickTolerance:t,rollDegreesPerPixelMoved:i=.3},r){const o=new Ko({checkCorrectEvent:e=>2===wi.mouseButton(e)&&e.ctrlKey});return new $o({clickTolerance:t,move:(e,t)=>{const o=r();let a=(t.x-e.x)*i;return t.y0===wi.mouseButton(e)&&!e.ctrlKey});return new $o({clickTolerance:t,move:(e,t)=>({around:t,panDelta:t.sub(e)}),activateOnStart:!0,moveStateManager:i,enable:e,assignEvents:Qo})}(e),m=new ea(e,i);i.dragPan=new ga(r,p,m),this._add("mousePan",p),this._add("touchPan",m,["touchZoom","touchRotate"]),e.interactive&&e.dragPan&&i.dragPan.enable(e.dragPan);const f=new sa,g=new oa;i.touchZoomRotate=new ya(r,g,f,l),this._add("touchRotate",f,["touchPan","touchZoom"]),this._add("touchZoom",g,["touchPan","touchRotate"]),e.interactive&&e.touchZoomRotate&&i.touchZoomRotate.enable(e.touchZoomRotate);const v=i.scrollZoom=new _a(i,(()=>this._triggerRenderFrame()));this._add("scrollZoom",v,["mousePan"]),e.interactive&&e.scrollZoom&&i.scrollZoom.enable(e.scrollZoom);const y=i.keyboard=new ha(i);this._add("keyboard",y),e.interactive&&e.keyboard&&i.keyboard.enable(),this._add("blockableMapEvent",new No(i));}_add(e,t,i){this._handlers.push({handlerName:e,handler:t,allowed:i}),this._handlersById[e]=t;}stop(e){if(!this._updatingCamera){for(const{handler:e}of this._handlers)e.reset();this._inertia.clear(),this._fireEvents({},{},e),this._changes=[];}}isActive(){for(const{handler:e}of this._handlers)if(e.isActive())return !0;return !1}isZooming(){return !!this._eventsInProgress.zoom||this._map.scrollZoom.isZooming()}isRotating(){return !!this._eventsInProgress.rotate}isMoving(){return Boolean(ba(this._eventsInProgress))||this.isZooming()}_blockedByActive(e,t,i){for(const r in e)if(r!==i&&(!t||t.indexOf(r)<0))return !0;return !1}_getMapTouches(e){const t=[];for(const i of e)this._el.contains(i.target)&&t.push(i);return t}mergeHandlerResult(e,i,r,o,a){if(!r)return;t.extend(e,r);const s={handlerName:o,originalEvent:r.originalEvent||a};void 0!==r.zoomDelta&&(i.zoom=s),void 0!==r.panDelta&&(i.drag=s),void 0!==r.rollDelta&&(i.roll=s),void 0!==r.pitchDelta&&(i.pitch=s),void 0!==r.bearingDelta&&(i.rotate=s);}_applyChanges(){const e={},i={},r={};for(const[o,a,s]of this._changes)o.panDelta&&(e.panDelta=(e.panDelta||new t.Point(0,0))._add(o.panDelta)),o.zoomDelta&&(e.zoomDelta=(e.zoomDelta||0)+o.zoomDelta),o.bearingDelta&&(e.bearingDelta=(e.bearingDelta||0)+o.bearingDelta),o.pitchDelta&&(e.pitchDelta=(e.pitchDelta||0)+o.pitchDelta),o.rollDelta&&(e.rollDelta=(e.rollDelta||0)+o.rollDelta),void 0!==o.around&&(e.around=o.around),void 0!==o.pinchAround&&(e.pinchAround=o.pinchAround),o.noInertia&&(e.noInertia=o.noInertia),t.extend(i,a),t.extend(r,s);this._updateMapTransform(e,i,r),this._changes=[];}_updateMapTransform(e,t,i){const r=this._map,o=r._getTransformForUpdate(),a=r.terrain;if(!(Ta(e)||a&&this._terrainMovement))return this._fireEvents(t,i,!0);r._stop(!0);let{panDelta:s,zoomDelta:n,bearingDelta:l,pitchDelta:c,rollDelta:h,around:u,pinchAround:d}=e;void 0!==d&&(u=d),u=u||r.transform.centerPoint,a&&!o.isPointOnMapSurface(u)&&(u=o.centerPoint);const _={panDelta:s,zoomDelta:n,rollDelta:h,pitchDelta:c,bearingDelta:l,around:u};this._map.cameraHelper.useGlobeControls&&!o.isPointOnMapSurface(u)&&(u=o.centerPoint);const p=u.distSqr(o.centerPoint)<.01?o.center:o.screenPointToLocation(s?u.sub(s):u);a?(this._map.cameraHelper.handleMapControlsRollPitchBearingZoom(_,o),this._terrainMovement||!t.drag&&!t.zoom?t.drag&&this._terrainMovement?o.setCenter(o.screenPointToLocation(o.centerPoint.sub(s))):this._map.cameraHelper.handleMapControlsPan(_,o,p):(this._terrainMovement=!0,this._map._elevationFreeze=!0,this._map.cameraHelper.handleMapControlsPan(_,o,p))):(this._map.cameraHelper.handleMapControlsRollPitchBearingZoom(_,o),this._map.cameraHelper.handleMapControlsPan(_,o,p)),r._applyUpdatedTransform(o),this._map._update(),e.noInertia||this._inertia.record(e),this._fireEvents(t,i,!0);}_fireEvents(e,i,r){const o=ba(this._eventsInProgress),a=ba(e),s={};for(const t in e){const{originalEvent:i}=e[t];this._eventsInProgress[t]||(s[`${t}start`]=i),this._eventsInProgress[t]=e[t];}!o&&a&&this._fireEvent("movestart",a.originalEvent);for(const e in s)this._fireEvent(e,s[e]);a&&this._fireEvent("move",a.originalEvent);for(const t in e){const{originalEvent:i}=e[t];this._fireEvent(t,i);}const n={};let l;for(const e in this._eventsInProgress){const{handlerName:t,originalEvent:r}=this._eventsInProgress[e];this._handlersById[t].isActive()||(delete this._eventsInProgress[e],l=i[t]||r,n[`${e}end`]=l);}for(const e in n)this._fireEvent(e,n[e]);const c=ba(this._eventsInProgress),h=(o||a)&&!c;if(h&&this._terrainMovement){this._map._elevationFreeze=!1,this._terrainMovement=!1;const e=this._map._getTransformForUpdate();this._map.getCenterClampedToGround()&&e.recalculateZoomAndCenter(this._map.terrain),this._map._applyUpdatedTransform(e);}if(r&&h){this._updatingCamera=!0;const e=this._inertia._onMoveEnd(this._map.dragPan._inertiaOptions),i=e=>0!==e&&-this._bearingSnap{delete this._frameId,this.handleEvent(new wa("renderFrame",{timeStamp:e})),this._applyChanges();}))}_triggerRenderFrame(){void 0===this._frameId&&(this._frameId=this._requestFrame());}}class Pa extends t.Evented{constructor(e,t,i){super(),this._renderFrameCallback=()=>{const e=Math.min((f.now()-this._easeStart)/this._easeOptions.duration,1);this._onEaseFrame(this._easeOptions.easing(e)),e<1&&this._easeFrameId?this._easeFrameId=this._requestRenderFrame(this._renderFrameCallback):this.stop();},this._moving=!1,this._zooming=!1,this.transform=e,this._bearingSnap=i.bearingSnap,this.cameraHelper=t,this.on("moveend",(()=>{delete this._requestedCameraState;}));}migrateProjection(e,t){e.apply(this.transform),this.transform=e,this.cameraHelper=t;}getCenter(){return new t.LngLat(this.transform.center.lng,this.transform.center.lat)}setCenter(e,t){return this.jumpTo({center:e},t)}getCenterElevation(){return this.transform.elevation}setCenterElevation(e,t){return this.jumpTo({elevation:e},t),this}getCenterClampedToGround(){return this._centerClampedToGround}setCenterClampedToGround(e){this._centerClampedToGround=e;}panBy(e,i,r){return e=t.Point.convert(e).mult(-1),this.panTo(this.transform.center,t.extend({offset:e},i),r)}panTo(e,i,r){return this.easeTo(t.extend({center:e},i),r)}getZoom(){return this.transform.zoom}setZoom(e,t){return this.jumpTo({zoom:e},t),this}zoomTo(e,i,r){return this.easeTo(t.extend({zoom:e},i),r)}zoomIn(e,t){return this.zoomTo(this.getZoom()+1,e,t),this}zoomOut(e,t){return this.zoomTo(this.getZoom()-1,e,t),this}getVerticalFieldOfView(){return this.transform.fov}setVerticalFieldOfView(e,i){return e!=this.transform.fov&&(this.transform.setFov(e),this.fire(new t.Event("movestart",i)).fire(new t.Event("move",i)).fire(new t.Event("moveend",i))),this}getBearing(){return this.transform.bearing}setBearing(e,t){return this.jumpTo({bearing:e},t),this}getPadding(){return this.transform.padding}setPadding(e,t){return this.jumpTo({padding:e},t),this}rotateTo(e,i,r){return this.easeTo(t.extend({bearing:e},i),r)}resetNorth(e,i){return this.rotateTo(0,t.extend({duration:1e3},e),i),this}resetNorthPitch(e,i){return this.easeTo(t.extend({bearing:0,pitch:0,roll:0,duration:1e3},e),i),this}snapToNorth(e,t){return Math.abs(this.getBearing()){m.easeFunc(t),this.terrain&&!e.freezeElevation&&this._updateElevation(t),this._applyUpdatedTransform(r),this._fireMoveEvents(i);}),(t=>{this.terrain&&e.freezeElevation&&this._finalizeElevation(),this._afterEase(i,t);}),e),this}_prepareEase(e,i,r={}){this._moving=!0,i||r.moving||this.fire(new t.Event("movestart",e)),this._zooming&&!r.zooming&&this.fire(new t.Event("zoomstart",e)),this._rotating&&!r.rotating&&this.fire(new t.Event("rotatestart",e)),this._pitching&&!r.pitching&&this.fire(new t.Event("pitchstart",e)),this._rolling&&!r.rolling&&this.fire(new t.Event("rollstart",e));}_prepareElevation(e){this._elevationCenter=e,this._elevationStart=this.transform.elevation,this._elevationTarget=this.terrain.getElevationForLngLatZoom(e,this.transform.tileZoom),this._elevationFreeze=!0;}_updateElevation(e){this.transform.setMinElevationForCurrentTile(this.terrain.getMinTileElevationForLngLatZoom(this._elevationCenter,this.transform.tileZoom));const i=this.terrain.getElevationForLngLatZoom(this._elevationCenter,this.transform.tileZoom);if(e<1&&i!==this._elevationTarget){const t=this._elevationTarget-this._elevationStart;this._elevationStart+=e*(t-(i-(t*e+this._elevationStart))/(1-e)),this._elevationTarget=i;}this.transform.setElevation(t.interpolateFactory.number(this._elevationStart,this._elevationTarget,e));}_finalizeElevation(){this._elevationFreeze=!1,this.getCenterClampedToGround()&&this.transform.recalculateZoomAndCenter(this.terrain);}_getTransformForUpdate(){return this.transformCameraUpdate||this.terrain?(this._requestedCameraState||(this._requestedCameraState=this.transform.clone()),this._requestedCameraState):this.transform}_elevateCameraIfInsideTerrain(e){if(!this.terrain&&e.elevation>=0&&e.pitch<=90)return {};const t=e.getCameraLngLat(),i=e.getCameraAltitude(),r=this.terrain?this.terrain.getElevationForLngLatZoom(t,e.zoom):0;if(ithis._elevateCameraIfInsideTerrain(e))),this.transformCameraUpdate&&t.push((e=>this.transformCameraUpdate(e))),!t.length)return;const i=e.clone();for(const e of t){const t=i.clone(),{center:r,zoom:o,roll:a,pitch:s,bearing:n,elevation:l}=e(t);r&&t.setCenter(r),void 0!==l&&t.setElevation(l),void 0!==o&&t.setZoom(o),void 0!==a&&t.setRoll(a),void 0!==s&&t.setPitch(s),void 0!==n&&t.setBearing(n),i.apply(t);}this.transform.apply(i);}_fireMoveEvents(e){this.fire(new t.Event("move",e)),this._zooming&&this.fire(new t.Event("zoom",e)),this._rotating&&this.fire(new t.Event("rotate",e)),this._pitching&&this.fire(new t.Event("pitch",e)),this._rolling&&this.fire(new t.Event("roll",e));}_afterEase(e,i){if(this._easeId&&i&&this._easeId===i)return;delete this._easeId;const r=this._zooming,o=this._rotating,a=this._pitching,s=this._rolling;this._moving=!1,this._zooming=!1,this._rotating=!1,this._pitching=!1,this._rolling=!1,this._padding=!1,r&&this.fire(new t.Event("zoomend",e)),o&&this.fire(new t.Event("rotateend",e)),a&&this.fire(new t.Event("pitchend",e)),s&&this.fire(new t.Event("rollend",e)),this.fire(new t.Event("moveend",e));}flyTo(e,i){if(!e.essential&&f.prefersReducedMotion){const r=t.pick(e,["center","zoom","bearing","pitch","roll","elevation"]);return this.jumpTo(r,i)}this.stop(),e=t.extend({offset:[0,0],speed:1.2,curve:1.42,easing:t.defaultEasing},e);const r=this._getTransformForUpdate(),o=r.bearing,a=r.pitch,s=r.roll,n=r.padding,l="bearing"in e?this._normalizeBearing(e.bearing,o):o,c="pitch"in e?+e.pitch:a,h="roll"in e?this._normalizeBearing(e.roll,s):s,u="padding"in e?e.padding:r.padding,d=t.Point.convert(e.offset);let _=r.centerPoint.add(d);const p=r.screenPointToLocation(_),m=this.cameraHelper.handleFlyTo(r,{bearing:l,pitch:c,roll:h,padding:u,locationAtOffset:p,offsetAsPoint:d,center:e.center,minZoom:e.minZoom,zoom:e.zoom});let g=e.curve;const v=Math.max(r.width,r.height),y=v/m.scaleOfZoom,x=m.pixelPathLength;"number"==typeof m.scaleOfMinZoom&&(g=Math.sqrt(v/m.scaleOfMinZoom/x*2));const b=g*g;function w(e){const t=(y*y-v*v+(e?-1:1)*b*b*x*x)/(2*(e?y:v)*b*x);return Math.log(Math.sqrt(t*t+1)-t)}function T(e){return (Math.exp(e)-Math.exp(-e))/2}function E(e){return (Math.exp(e)+Math.exp(-e))/2}const P=w(!1);let I=function(e){return E(P)/E(P+g*e)},C=function(e){return v*((E(P)*(T(t=P+g*e)/E(t))-T(P))/b)/x;var t;},M=(w(!0)-P)/g;if(Math.abs(x)<2e-6||!isFinite(M)){if(Math.abs(v-y)<1e-6)return this.easeTo(e,i);const t=y0,I=e=>Math.exp(t*g*e);}return e.duration="duration"in e?+e.duration:1e3*M/("screenSpeed"in e?+e.screenSpeed/g:+e.speed),e.maxDuration&&e.duration>e.maxDuration&&(e.duration=0),this._zooming=!0,this._rotating=o!==l,this._pitching=c!==a,this._rolling=h!==s,this._padding=!r.isPaddingEqual(u),this._prepareEase(i,!1),this.terrain&&this._prepareElevation(m.targetCenter),this._ease((p=>{const f=p*M,g=1/I(f),v=C(f);this._rotating&&r.setBearing(t.interpolateFactory.number(o,l,p)),this._pitching&&r.setPitch(t.interpolateFactory.number(a,c,p)),this._rolling&&r.setRoll(t.interpolateFactory.number(s,h,p)),this._padding&&(r.interpolatePadding(n,u,p),_=r.centerPoint.add(d)),m.easeFunc(p,g,v,_),this.terrain&&!e.freezeElevation&&this._updateElevation(p),this._applyUpdatedTransform(r),this._fireMoveEvents(i);}),(()=>{this.terrain&&e.freezeElevation&&this._finalizeElevation(),this._afterEase(i);}),e),this}isEasing(){return !!this._easeFrameId}stop(){return this._stop()}_stop(e,t){var i;if(this._easeFrameId&&(this._cancelRenderFrame(this._easeFrameId),delete this._easeFrameId,delete this._onEaseFrame),this._onEaseEnd){const e=this._onEaseEnd;delete this._onEaseEnd,e.call(this,t);}return e||null===(i=this.handlers)||void 0===i||i.stop(!1),this}_ease(e,t,i){!1===i.animate||0===i.duration?(e(1),t()):(this._easeStart=f.now(),this._easeOptions=i,this._onEaseFrame=e,this._onEaseEnd=t,this._easeFrameId=this._requestRenderFrame(this._renderFrameCallback));}_normalizeBearing(e,i){e=t.wrap(e,-180,180);const r=Math.abs(e-i);return Math.abs(e-360-i)MapLibre'};class Ca{constructor(e=Ia){this._toggleAttribution=()=>{this._container.classList.contains("maplibregl-compact")&&(this._container.classList.contains("maplibregl-compact-show")?(this._container.setAttribute("open",""),this._container.classList.remove("maplibregl-compact-show")):(this._container.classList.add("maplibregl-compact-show"),this._container.removeAttribute("open")));},this._updateData=e=>{!e||"metadata"!==e.sourceDataType&&"visibility"!==e.sourceDataType&&"style"!==e.dataType&&"terrain"!==e.type||this._updateAttributions();},this._updateCompact=()=>{this._map.getCanvasContainer().offsetWidth<=640||this._compact?!1===this._compact?this._container.setAttribute("open",""):this._container.classList.contains("maplibregl-compact")||this._container.classList.contains("maplibregl-attrib-empty")||(this._container.setAttribute("open",""),this._container.classList.add("maplibregl-compact","maplibregl-compact-show")):(this._container.setAttribute("open",""),this._container.classList.contains("maplibregl-compact")&&this._container.classList.remove("maplibregl-compact","maplibregl-compact-show"));},this._updateCompactMinimize=()=>{this._container.classList.contains("maplibregl-compact")&&this._container.classList.contains("maplibregl-compact-show")&&this._container.classList.remove("maplibregl-compact-show");},this.options=e;}getDefaultPosition(){return "bottom-right"}onAdd(e){return this._map=e,this._compact=this.options.compact,this._container=wi.create("details","maplibregl-ctrl maplibregl-ctrl-attrib"),this._compactButton=wi.create("summary","maplibregl-ctrl-attrib-button",this._container),this._compactButton.addEventListener("click",this._toggleAttribution),this._setElementTitle(this._compactButton,"ToggleAttribution"),this._innerContainer=wi.create("div","maplibregl-ctrl-attrib-inner",this._container),this._updateAttributions(),this._updateCompact(),this._map.on("styledata",this._updateData),this._map.on("sourcedata",this._updateData),this._map.on("terrain",this._updateData),this._map.on("resize",this._updateCompact),this._map.on("drag",this._updateCompactMinimize),this._container}onRemove(){wi.remove(this._container),this._map.off("styledata",this._updateData),this._map.off("sourcedata",this._updateData),this._map.off("terrain",this._updateData),this._map.off("resize",this._updateCompact),this._map.off("drag",this._updateCompactMinimize),this._map=void 0,this._compact=void 0,this._sanitizedAttributionHTML=void 0;}_setElementTitle(e,t){const i=this._map._getUIString(`AttributionControl.${t}`);e.title=i,e.setAttribute("aria-label",i);}_updateAttributions(){if(!this._map.style)return;let e=[];if(this.options.customAttribution&&(Array.isArray(this.options.customAttribution)?e=e.concat(this.options.customAttribution.map((e=>"string"!=typeof e?"":e))):"string"==typeof this.options.customAttribution&&e.push(this.options.customAttribution)),this._map.style.stylesheet){const e=this._map.style.stylesheet;this.styleOwner=e.owner,this.styleId=e.id;}const t=this._map.style.sourceCaches;for(const i in t){const r=t[i];if(r.used||r.usedForTerrain){const t=r.getSource();t.attribution&&e.indexOf(t.attribution)<0&&e.push(t.attribution);}}e=e.filter((e=>String(e).trim())),e.sort(((e,t)=>e.length-t.length)),e=e.filter(((t,i)=>{for(let r=i+1;r=0)return !1;return !0}));const i=e.join(" | ");i!==this._sanitizedAttributionHTML&&(this._sanitizedAttributionHTML=wi.sanitize(i),e.length?(this._innerContainer.innerHTML=this._sanitizedAttributionHTML,this._container.classList.remove("maplibregl-attrib-empty")):this._container.classList.add("maplibregl-attrib-empty"),this._updateCompact(),this._editLink=null);}}class Ma{constructor(e={}){this._updateCompact=()=>{const e=this._container.children;if(e.length){const t=e[0];this._map.getCanvasContainer().offsetWidth<=640||this._compact?!1!==this._compact&&t.classList.add("maplibregl-compact"):t.classList.remove("maplibregl-compact");}},this.options=e;}getDefaultPosition(){return "bottom-left"}onAdd(e){this._map=e,this._compact=this.options&&this.options.compact,this._container=wi.create("div","maplibregl-ctrl");const t=wi.create("a","maplibregl-ctrl-logo");return t.target="_blank",t.rel="noopener nofollow",t.href="https://maplibre.org/",t.setAttribute("aria-label",this._map._getUIString("LogoControl.Title")),t.setAttribute("rel","noopener nofollow"),this._container.appendChild(t),this._container.style.display="block",this._map.on("resize",this._updateCompact),this._updateCompact(),this._container}onRemove(){wi.remove(this._container),this._map.off("resize",this._updateCompact),this._map=void 0,this._compact=void 0;}}class Sa{constructor(){this._queue=[],this._id=0,this._cleared=!1,this._currentlyRunning=!1;}add(e){const t=++this._id;return this._queue.push({callback:e,id:t,cancelled:!1}),t}remove(e){const t=this._currentlyRunning,i=t?this._queue.concat(t):this._queue;for(const t of i)if(t.id===e)return void(t.cancelled=!0)}run(e=0){if(this._currentlyRunning)throw new Error("Attempting to run(), but is already running.");const t=this._currentlyRunning=this._queue;this._queue=[];for(const i of t)if(!i.cancelled&&(i.callback(e),this._cleared))break;this._cleared=!1,this._currentlyRunning=!1;}clear(){this._currentlyRunning&&(this._cleared=!0),this._queue=[];}}var Ra=t.createLayout([{name:"a_pos3d",type:"Int16",components:3}]);class Da extends t.Evented{constructor(e){super(),this._lastTilesetChange=f.now(),this.sourceCache=e,this._tiles={},this._renderableTilesKeys=[],this._sourceTileCache={},this.minzoom=0,this.maxzoom=22,this.deltaZoom=1,this.tileSize=e._source.tileSize*2**this.deltaZoom,e.usedForTerrain=!0,e.tileSize=this.tileSize;}destruct(){this.sourceCache.usedForTerrain=!1,this.sourceCache.tileSize=null;}update(e,i){this.sourceCache.update(e,i),this._renderableTilesKeys=[];const r={};for(const o of ve(e,{tileSize:this.tileSize,minzoom:this.minzoom,maxzoom:this.maxzoom,reparseOverscaled:!1,terrain:i,calculateTileZoom:this.sourceCache._source.calculateTileZoom}))r[o.key]=!0,this._renderableTilesKeys.push(o.key),this._tiles[o.key]||(o.terrainRttPosMatrix32f=new Float64Array(16),t.ortho(o.terrainRttPosMatrix32f,0,t.EXTENT,t.EXTENT,0,0,1),this._tiles[o.key]=new ae(o,this.tileSize),this._lastTilesetChange=f.now());for(const e in this._tiles)r[e]||delete this._tiles[e];}freeRtt(e){for(const t in this._tiles){const i=this._tiles[t];(!e||i.tileID.equals(e)||i.tileID.isChildOf(e)||e.isChildOf(i.tileID))&&(i.rtt=[]);}}getRenderableTiles(){return this._renderableTilesKeys.map((e=>this.getTileByID(e)))}getTileByID(e){return this._tiles[e]}getTerrainCoords(e){const i={};for(const r of this._renderableTilesKeys){const o=this._tiles[r].tileID,a=e.clone(),s=t.createMat4f64();if(o.canonical.equals(e.canonical))t.ortho(s,0,t.EXTENT,t.EXTENT,0,0,1);else if(o.canonical.isChildOf(e.canonical)){const i=o.canonical.z-e.canonical.z,r=o.canonical.x-(o.canonical.x>>i<>i<>i;t.ortho(s,0,n,n,0,0,1),t.translate(s,s,[-r*n,-a*n,0]);}else {if(!e.canonical.isChildOf(o.canonical))continue;{const i=e.canonical.z-o.canonical.z,r=e.canonical.x-(e.canonical.x>>i<>i<>i;t.ortho(s,0,t.EXTENT,t.EXTENT,0,0,1),t.translate(s,s,[r*n,a*n,0]),t.scale(s,s,[1/2**i,1/2**i,0]);}}a.terrainRttPosMatrix32f=new Float32Array(s),i[r]=a;}return i}getSourceTile(e,t){const i=this.sourceCache._source;let r=e.overscaledZ-this.deltaZoom;if(r>i.maxzoom&&(r=i.maxzoom),r=i.minzoom&&(!o||!o.dem);)o=this.sourceCache.getTileByID(e.scaledTo(r--).key);return o}anyTilesAfterTime(e=Date.now()){return this._lastTilesetChange>=e}}class za{constructor(e,t,i){this.painter=e,this.sourceCache=new Da(t),this.options=i,this.exaggeration="number"==typeof i.exaggeration?i.exaggeration:1,this.qualityFactor=2,this.meshSize=128,this._demMatrixCache={},this.coordsIndex=[],this._coordsTextureSize=1024;}getDEMElevation(e,i,r,o=t.EXTENT){var a;if(!(i>=0&&i=0&&re.canonical.z&&(e.canonical.z>=r?o=e.canonical.z-r:t.warnOnce("cannot calculate elevation if elevation maxzoom > source.maxzoom"));const a=e.canonical.x-(e.canonical.x>>o<>o<>8<<4|e>>8,i[t+3]=0;const r=new t.RGBAImage({width:this._coordsTextureSize,height:this._coordsTextureSize},new Uint8Array(i.buffer)),o=new y(e,r,e.gl.RGBA,{premultiply:!1});return o.bind(e.gl.NEAREST,e.gl.CLAMP_TO_EDGE),this._coordsTexture=o,o}pointCoordinate(e){this.painter.maybeDrawDepthAndCoords(!0);const i=new Uint8Array(4),r=this.painter.context,o=r.gl,a=Math.round(e.x*this.painter.pixelRatio/devicePixelRatio),s=Math.round(e.y*this.painter.pixelRatio/devicePixelRatio),n=Math.round(this.painter.height/devicePixelRatio);r.bindFramebuffer.set(this.getFramebuffer("coords").framebuffer),o.readPixels(a,n-s-1,1,1,o.RGBA,o.UNSIGNED_BYTE,i),r.bindFramebuffer.set(null);const l=i[0]+(i[2]>>4<<8),c=i[1]+((15&i[2])<<8),h=this.coordsIndex[255-i[3]],u=h&&this.sourceCache.getTileByID(h);if(!u)return null;const d=this._coordsTextureSize,_=(1<e.id!==t)),this._recentlyUsed.push(e.id);}stampObject(e){e.stamp=++this._stamp;}getOrCreateFreeObject(){for(const e of this._recentlyUsed)if(!this._objects[e].inUse)return this._objects[e];if(this._objects.length>=this._size)throw new Error("No free RenderPool available, call freeAllObjects() required!");const e=this._createObject(this._objects.length);return this._objects.push(e),e}freeObject(e){e.inUse=!1;}freeAllObjects(){for(const e of this._objects)this.freeObject(e);}isFull(){return !(this._objects.length!e.inUse))}}const Aa={background:!0,fill:!0,line:!0,raster:!0,hillshade:!0};class ka{constructor(e,t){this.painter=e,this.terrain=t,this.pool=new La(e.context,30,t.sourceCache.tileSize*t.qualityFactor);}destruct(){this.pool.destruct();}getTexture(e){return this.pool.getObjectForId(e.rtt[this._stacks.length-1].id).texture}prepareForRender(e,t){this._stacks=[],this._prevType=null,this._rttTiles=[],this._renderableTiles=this.terrain.sourceCache.getRenderableTiles(),this._renderableLayerIds=e._order.filter((i=>!e._layers[i].isHidden(t))),this._coordsAscending={};for(const t in e.sourceCaches){this._coordsAscending[t]={};const i=e.sourceCaches[t].getVisibleCoordinates();for(const e of i){const i=this.terrain.sourceCache.getTerrainCoords(e);for(const e in i)this._coordsAscending[t][e]||(this._coordsAscending[t][e]=[]),this._coordsAscending[t][e].push(i[e]);}}this._coordsAscendingStr={};for(const t of e._order){const i=e._layers[t],r=i.source;if(Aa[i.type]&&!this._coordsAscendingStr[r]){this._coordsAscendingStr[r]={};for(const e in this._coordsAscending[r])this._coordsAscendingStr[r][e]=this._coordsAscending[r][e].map((e=>e.key)).sort().join();}}for(const e of this._renderableTiles)for(const t in this._coordsAscendingStr){const i=this._coordsAscendingStr[t][e.tileID.key];i&&i!==e.rttCoords[t]&&(e.rtt=[]);}}renderLayer(e,i){if(e.isHidden(this.painter.transform.zoom))return !1;const r=Object.assign(Object.assign({},i),{isRenderingToTexture:!0}),o=e.type,a=this.painter,s=this._renderableLayerIds[this._renderableLayerIds.length-1]===e.id;if(Aa[o]&&(this._prevType&&Aa[this._prevType]||this._stacks.push([]),this._prevType=o,this._stacks[this._stacks.length-1].push(e.id),!s))return !0;if(Aa[this._prevType]||Aa[o]&&s){this._prevType=o;const e=this._stacks.length-1,i=this._stacks[e]||[];for(const o of this._renderableTiles){if(this.pool.isFull()&&(To(this.painter,this.terrain,this._rttTiles,r),this._rttTiles=[],this.pool.freeAllObjects()),this._rttTiles.push(o),o.rtt[e]){const t=this.pool.getObjectForId(o.rtt[e].id);if(t.stamp===o.rtt[e].stamp){this.pool.useObject(t);continue}}const s=this.pool.getOrCreateFreeObject();this.pool.useObject(s),this.pool.stampObject(s),o.rtt[e]={id:s.id,stamp:s.stamp},a.context.bindFramebuffer.set(s.fbo.framebuffer),a.context.clear({color:t.Color.transparent,stencil:0}),a.currentStencilSource=void 0;for(let e=0;ei.maxZoom)throw new Error("maxZoom must be greater than or equal to minZoom");if(null!=i.minPitch&&null!=i.maxPitch&&i.minPitch>i.maxPitch)throw new Error("maxPitch must be greater than or equal to minPitch");if(null!=i.minPitch&&i.minPitch<0)throw new Error("minPitch must be greater than or equal to 0");if(null!=i.maxPitch&&i.maxPitch>180)throw new Error("maxPitch must be less than or equal to 180");const r=new Ft,o=new Ut;if(void 0!==i.minZoom&&r.setMinZoom(i.minZoom),void 0!==i.maxZoom&&r.setMaxZoom(i.maxZoom),void 0!==i.minPitch&&r.setMinPitch(i.minPitch),void 0!==i.maxPitch&&r.setMaxPitch(i.maxPitch),void 0!==i.renderWorldCopies&&r.setRenderWorldCopies(i.renderWorldCopies),super(r,o,{bearingSnap:i.bearingSnap}),this._idleTriggered=!1,this._crossFadingFactor=1,this._renderTaskQueue=new Sa,this._controls=[],this._mapId=t.uniqueId(),this._contextLost=e=>{e.preventDefault(),this._frameRequest&&(this._frameRequest.abort(),this._frameRequest=null),this.fire(new t.Event("webglcontextlost",{originalEvent:e}));},this._contextRestored=e=>{this._setupPainter(),this.resize(),this._update(),this.fire(new t.Event("webglcontextrestored",{originalEvent:e}));},this._onMapScroll=e=>{if(e.target===this._container)return this._container.scrollTop=0,this._container.scrollLeft=0,!1},this._onWindowOnline=()=>{this._update();},this._interactive=i.interactive,this._maxTileCacheSize=i.maxTileCacheSize,this._maxTileCacheZoomLevels=i.maxTileCacheZoomLevels,this._failIfMajorPerformanceCaveat=!0===i.failIfMajorPerformanceCaveat,this._preserveDrawingBuffer=!0===i.preserveDrawingBuffer,this._antialias=!0===i.antialias,this._trackResize=!0===i.trackResize,this._bearingSnap=i.bearingSnap,this._centerClampedToGround=i.centerClampedToGround,this._refreshExpiredTiles=!0===i.refreshExpiredTiles,this._fadeDuration=i.fadeDuration,this._crossSourceCollisions=!0===i.crossSourceCollisions,this._collectResourceTiming=!0===i.collectResourceTiming,this._locale=Object.assign(Object.assign({},Fa),i.locale),this._clickTolerance=i.clickTolerance,this._overridePixelRatio=i.pixelRatio,this._maxCanvasSize=i.maxCanvasSize,this.transformCameraUpdate=i.transformCameraUpdate,this.cancelPendingTileRequestsWhileZooming=!0===i.cancelPendingTileRequestsWhileZooming,this._imageQueueHandle=_.addThrottleControl((()=>this.isMoving())),this._requestManager=new vi(i.transformRequest),"string"==typeof i.container){if(this._container=document.getElementById(i.container),!this._container)throw new Error(`Container '${i.container}' not found.`)}else {if(!(i.container instanceof HTMLElement))throw new Error("Invalid type: 'container' must be a String or HTMLElement.");this._container=i.container;}if(i.maxBounds&&this.setMaxBounds(i.maxBounds),this._setupContainer(),this._setupPainter(),this.on("move",(()=>this._update(!1))),this.on("moveend",(()=>this._update(!1))),this.on("zoom",(()=>this._update(!0))),this.on("terrain",(()=>{this.painter.terrainFacilitator.dirty=!0,this._update(!0);})),this.once("idle",(()=>{this._idleTriggered=!0;})),"undefined"!=typeof window){addEventListener("online",this._onWindowOnline,!1);let e=!1;const t=Io((e=>{this._trackResize&&!this._removed&&(this.resize(e),this.redraw());}),50);this._resizeObserver=new ResizeObserver((i=>{e?t(i):e=!0;})),this._resizeObserver.observe(this._container);}this.handlers=new Ea(this,i),this._hash=i.hash&&new Co("string"==typeof i.hash&&i.hash||void 0).addTo(this),this._hash&&this._hash._onHashChange()||(this.jumpTo({center:i.center,elevation:i.elevation,zoom:i.zoom,bearing:i.bearing,pitch:i.pitch,roll:i.roll}),i.bounds&&(this.resize(),this.fitBounds(i.bounds,t.extend({},i.fitBoundsOptions,{duration:0})))),this.resize(),this._localIdeographFontFamily=i.localIdeographFontFamily,this._validateStyle=i.validateStyle,i.style&&this.setStyle(i.style,{localIdeographFontFamily:i.localIdeographFontFamily}),i.attributionControl&&this.addControl(new Ca("boolean"==typeof i.attributionControl?void 0:i.attributionControl)),i.maplibreLogo&&this.addControl(new Ma,i.logoPosition),this.on("style.load",(()=>{if(this.transform.unmodified){const e=t.pick(this.style.stylesheet,["center","zoom","bearing","pitch","roll"]);this.jumpTo(e);}})),this.on("data",(e=>{this._update("style"===e.dataType),this.fire(new t.Event(`${e.dataType}data`,e));})),this.on("dataloading",(e=>{this.fire(new t.Event(`${e.dataType}dataloading`,e));})),this.on("dataabort",(e=>{this.fire(new t.Event("sourcedataabort",e));}));}_getMapId(){return this._mapId}addControl(e,i){if(void 0===i&&(i=e.getDefaultPosition?e.getDefaultPosition():"top-right"),!e||!e.onAdd)return this.fire(new t.ErrorEvent(new Error("Invalid argument to map.addControl(). Argument must be a control with onAdd and onRemove methods.")));const r=e.onAdd(this);this._controls.push(e);const o=this._controlPositions[i];return -1!==i.indexOf("bottom")?o.insertBefore(r,o.firstChild):o.appendChild(r),this}removeControl(e){if(!e||!e.onRemove)return this.fire(new t.ErrorEvent(new Error("Invalid argument to map.removeControl(). Argument must be a control with onAdd and onRemove methods.")));const i=this._controls.indexOf(e);return i>-1&&this._controls.splice(i,1),e.onRemove(this),this}hasControl(e){return this._controls.indexOf(e)>-1}calculateCameraOptionsFromTo(e,t,i,r){return null==r&&this.terrain&&(r=this.terrain.getElevationForLngLatZoom(i,this.transform.tileZoom)),super.calculateCameraOptionsFromTo(e,t,i,r)}resize(e){var i;const r=this._containerDimensions(),o=r[0],a=r[1],s=this._getClampedPixelRatio(o,a);if(this._resizeCanvas(o,a,s),this.painter.resize(o,a,s),this.painter.overLimit()){const e=this.painter.context.gl;this._maxCanvasSize=[e.drawingBufferWidth,e.drawingBufferHeight];const t=this._getClampedPixelRatio(o,a);this._resizeCanvas(o,a,t),this.painter.resize(o,a,t);}this.transform.resize(o,a),null===(i=this._requestedCameraState)||void 0===i||i.resize(o,a);const n=!this._moving;return n&&(this.stop(),this.fire(new t.Event("movestart",e)).fire(new t.Event("move",e))),this.fire(new t.Event("resize",e)),n&&this.fire(new t.Event("moveend",e)),this}_getClampedPixelRatio(e,t){const{0:i,1:r}=this._maxCanvasSize,o=this.getPixelRatio(),a=e*o,s=t*o;return Math.min(a>i?i/a:1,s>r?r/s:1)*o}getPixelRatio(){var e;return null!==(e=this._overridePixelRatio)&&void 0!==e?e:devicePixelRatio}setPixelRatio(e){this._overridePixelRatio=e,this.resize();}getBounds(){return this.transform.getBounds()}getMaxBounds(){return this.transform.getMaxBounds()}setMaxBounds(e){return this.transform.setMaxBounds(V.convert(e)),this._update()}setMinZoom(e){if((e=null==e?-2:e)>=-2&&e<=this.transform.maxZoom)return this.transform.setMinZoom(e),this._update(),this.getZoom()=this.transform.minZoom)return this.transform.setMaxZoom(e),this._update(),this.getZoom()>e&&this.setZoom(e),this;throw new Error("maxZoom must be greater than the current minZoom")}getMaxZoom(){return this.transform.maxZoom}setMinPitch(e){if((e=null==e?0:e)<0)throw new Error("minPitch must be greater than or equal to 0");if(e>=0&&e<=this.transform.maxPitch)return this.transform.setMinPitch(e),this._update(),this.getPitch()180)throw new Error("maxPitch must be less than or equal to 180");if(e>=this.transform.minPitch)return this.transform.setMaxPitch(e),this._update(),this.getPitch()>e&&this.setPitch(e),this;throw new Error("maxPitch must be greater than the current minPitch")}getMaxPitch(){return this.transform.maxPitch}getRenderWorldCopies(){return this.transform.renderWorldCopies}setRenderWorldCopies(e){return this.transform.setRenderWorldCopies(e),this._update()}project(e){return this.transform.locationToScreenPoint(t.LngLat.convert(e),this.style&&this.terrain)}unproject(e){return this.transform.screenPointToLocation(t.Point.convert(e),this.terrain)}isMoving(){var e;return this._moving||(null===(e=this.handlers)||void 0===e?void 0:e.isMoving())}isZooming(){var e;return this._zooming||(null===(e=this.handlers)||void 0===e?void 0:e.isZooming())}isRotating(){var e;return this._rotating||(null===(e=this.handlers)||void 0===e?void 0:e.isRotating())}_createDelegatedListener(e,t,i){if("mouseenter"===e||"mouseover"===e){let r=!1;const o=o=>{const a=t.filter((e=>this.getLayer(e))),s=0!==a.length?this.queryRenderedFeatures(o.point,{layers:a}):[];s.length?r||(r=!0,i.call(this,new Bo(e,this,o.originalEvent,{features:s}))):r=!1;};return {layers:t,listener:i,delegates:{mousemove:o,mouseout:()=>{r=!1;}}}}if("mouseleave"===e||"mouseout"===e){let r=!1;const o=o=>{const a=t.filter((e=>this.getLayer(e)));(0!==a.length?this.queryRenderedFeatures(o.point,{layers:a}):[]).length?r=!0:r&&(r=!1,i.call(this,new Bo(e,this,o.originalEvent)));},a=t=>{r&&(r=!1,i.call(this,new Bo(e,this,t.originalEvent)));};return {layers:t,listener:i,delegates:{mousemove:o,mouseout:a}}}{const r=e=>{const r=t.filter((e=>this.getLayer(e))),o=0!==r.length?this.queryRenderedFeatures(e.point,{layers:r}):[];o.length&&(e.features=o,i.call(this,e),delete e.features);};return {layers:t,listener:i,delegates:{[e]:r}}}}_saveDelegatedListener(e,t){this._delegatedListeners=this._delegatedListeners||{},this._delegatedListeners[e]=this._delegatedListeners[e]||[],this._delegatedListeners[e].push(t);}_removeDelegatedListener(e,t,i){if(!this._delegatedListeners||!this._delegatedListeners[e])return;const r=this._delegatedListeners[e];for(let e=0;et.includes(e)))){for(const e in o.delegates)this.off(e,o.delegates[e]);return void r.splice(e,1)}}}on(e,t,i){if(void 0===i)return super.on(e,t);const r="string"==typeof t?[t]:t,o=this._createDelegatedListener(e,r,i);this._saveDelegatedListener(e,o);for(const e in o.delegates)this.on(e,o.delegates[e]);return {unsubscribe:()=>{this._removeDelegatedListener(e,r,i);}}}once(e,t,i){if(void 0===i)return super.once(e,t);const r="string"==typeof t?[t]:t,o=this._createDelegatedListener(e,r,i);for(const t in o.delegates){const a=o.delegates[t];o.delegates[t]=(...t)=>{this._removeDelegatedListener(e,r,i),a(...t);};}this._saveDelegatedListener(e,o);for(const e in o.delegates)this.once(e,o.delegates[e]);return this}off(e,t,i){return void 0===i?super.off(e,t):(this._removeDelegatedListener(e,"string"==typeof t?[t]:t,i),this)}queryRenderedFeatures(e,i){if(!this.style)return [];let r;const o=e instanceof t.Point||Array.isArray(e),a=o?e:[[0,0],[this.transform.width,this.transform.height]];if(i=i||(o?{}:e)||{},a instanceof t.Point||"number"==typeof a[0])r=[t.Point.convert(a)];else {const e=t.Point.convert(a[0]),i=t.Point.convert(a[1]);r=[e,new t.Point(i.x,e.y),i,new t.Point(e.x,i.y),e];}return this.style.queryRenderedFeatures(r,i,this.transform)}querySourceFeatures(e,t){return this.style.querySourceFeatures(e,t)}setStyle(e,i){return !1!==(i=t.extend({},{localIdeographFontFamily:this._localIdeographFontFamily,validate:this._validateStyle},i)).diff&&i.localIdeographFontFamily===this._localIdeographFontFamily&&this.style&&e?(this._diffStyle(e,i),this):(this._localIdeographFontFamily=i.localIdeographFontFamily,this._updateStyle(e,i))}setTransformRequest(e){return this._requestManager.setTransformRequest(e),this}_getUIString(e){const t=this._locale[e];if(null==t)throw new Error(`Missing UI string '${e}'`);return t}_updateStyle(e,t){var i,r;if(t.transformStyle&&this.style&&!this.style._loaded)return void this.style.once("style.load",(()=>this._updateStyle(e,t)));const o=this.style&&t.transformStyle?this.style.serialize():void 0;return this.style&&(this.style.setEventedParent(null),this.style._remove(!e)),e?(this.style=new gi(this,t||{}),this.style.setEventedParent(this,{style:this.style}),"string"==typeof e?this.style.loadURL(e,t,o):this.style.loadJSON(e,t,o),this):(null===(r=null===(i=this.style)||void 0===i?void 0:i.projection)||void 0===r||r.destroy(),delete this.style,this)}_lazyInitEmptyStyle(){this.style||(this.style=new gi(this,{}),this.style.setEventedParent(this,{style:this.style}),this.style.loadEmpty());}_diffStyle(e,i){if("string"==typeof e){const r=this._requestManager.transformRequest(e,"Style");t.getJSON(r,new AbortController).then((e=>{this._updateDiff(e.data,i);})).catch((e=>{e&&this.fire(new t.ErrorEvent(e));}));}else "object"==typeof e&&this._updateDiff(e,i);}_updateDiff(e,i){try{this.style.setState(e,i)&&this._update(!0);}catch(r){t.warnOnce(`Unable to perform style diff: ${r.message||r.error||r}. Rebuilding the style from scratch.`),this._updateStyle(e,i);}}getStyle(){if(this.style)return this.style.serialize()}isStyleLoaded(){return this.style?this.style.loaded():t.warnOnce("There is no style added to the map.")}addSource(e,t){return this._lazyInitEmptyStyle(),this.style.addSource(e,t),this._update(!0)}isSourceLoaded(e){const i=this.style&&this.style.sourceCaches[e];if(void 0!==i)return i.loaded();this.fire(new t.ErrorEvent(new Error(`There is no source with ID '${e}'`)));}setTerrain(e){if(this.style._checkLoaded(),this._terrainDataCallback&&this.style.off("data",this._terrainDataCallback),e){const i=this.style.sourceCaches[e.source];if(!i)throw new Error(`cannot load terrain, because there exists no source with ID: ${e.source}`);null===this.terrain&&i.reload();for(const i in this.style._layers){const r=this.style._layers[i];"hillshade"===r.type&&r.source===e.source&&t.warnOnce("You are using the same source for a hillshade layer and for 3D terrain. Please consider using two separate sources to improve rendering quality.");}this.terrain=new za(this.painter,i,e),this.painter.renderToTexture=new ka(this.painter,this.terrain),this.transform.setMinElevationForCurrentTile(this.terrain.getMinTileElevationForLngLatZoom(this.transform.center,this.transform.tileZoom)),this.transform.setElevation(this.terrain.getElevationForLngLatZoom(this.transform.center,this.transform.tileZoom)),this._terrainDataCallback=t=>{"style"===t.dataType?this.terrain.sourceCache.freeRtt():"source"===t.dataType&&t.tile&&(t.sourceId!==e.source||this._elevationFreeze||(this.transform.setMinElevationForCurrentTile(this.terrain.getMinTileElevationForLngLatZoom(this.transform.center,this.transform.tileZoom)),this._centerClampedToGround&&this.transform.setElevation(this.terrain.getElevationForLngLatZoom(this.transform.center,this.transform.tileZoom))),this.terrain.sourceCache.freeRtt(t.tile.tileID));},this.style.on("data",this._terrainDataCallback);}else this.terrain&&this.terrain.sourceCache.destruct(),this.terrain=null,this.painter.renderToTexture&&this.painter.renderToTexture.destruct(),this.painter.renderToTexture=null,this.transform.setMinElevationForCurrentTile(0),this._centerClampedToGround&&this.transform.setElevation(0);return this.fire(new t.Event("terrain",{terrain:e})),this}getTerrain(){var e,t;return null!==(t=null===(e=this.terrain)||void 0===e?void 0:e.options)&&void 0!==t?t:null}areTilesLoaded(){const e=this.style&&this.style.sourceCaches;for(const t in e){const i=e[t]._tiles;for(const e in i){const t=i[e];if("loaded"!==t.state&&"errored"!==t.state)return !1}}return !0}removeSource(e){return this.style.removeSource(e),this._update(!0)}getSource(e){return this.style.getSource(e)}addImage(e,i,r={}){const{pixelRatio:o=1,sdf:a=!1,stretchX:s,stretchY:n,content:l,textFitWidth:c,textFitHeight:h}=r;if(this._lazyInitEmptyStyle(),!(i instanceof HTMLImageElement||t.isImageBitmap(i))){if(void 0===i.width||void 0===i.height)return this.fire(new t.ErrorEvent(new Error("Invalid arguments to map.addImage(). The second argument must be an `HTMLImageElement`, `ImageData`, `ImageBitmap`, or object with `width`, `height`, and `data` properties with the same format as `ImageData`")));{const{width:r,height:u,data:d}=i,_=i;return this.style.addImage(e,{data:new t.RGBAImage({width:r,height:u},new Uint8Array(d)),pixelRatio:o,stretchX:s,stretchY:n,content:l,textFitWidth:c,textFitHeight:h,sdf:a,version:0,userImage:_}),_.onAdd&&_.onAdd(this,e),this}}{const{width:r,height:u,data:d}=f.getImageData(i);this.style.addImage(e,{data:new t.RGBAImage({width:r,height:u},d),pixelRatio:o,stretchX:s,stretchY:n,content:l,textFitWidth:c,textFitHeight:h,sdf:a,version:0});}}updateImage(e,i){const r=this.style.getImage(e);if(!r)return this.fire(new t.ErrorEvent(new Error("The map has no image with that id. If you are adding a new image use `map.addImage(...)` instead.")));const o=i instanceof HTMLImageElement||t.isImageBitmap(i)?f.getImageData(i):i,{width:a,height:s,data:n}=o;if(void 0===a||void 0===s)return this.fire(new t.ErrorEvent(new Error("Invalid arguments to map.updateImage(). The second argument must be an `HTMLImageElement`, `ImageData`, `ImageBitmap`, or object with `width`, `height`, and `data` properties with the same format as `ImageData`")));if(a!==r.data.width||s!==r.data.height)return this.fire(new t.ErrorEvent(new Error("The width and height of the updated image must be that same as the previous version of the image")));const l=!(i instanceof HTMLImageElement||t.isImageBitmap(i));return r.data.replace(n,l),this.style.updateImage(e,r),this}getImage(e){return this.style.getImage(e)}hasImage(e){return e?!!this.style.getImage(e):(this.fire(new t.ErrorEvent(new Error("Missing required image id"))),!1)}removeImage(e){this.style.removeImage(e);}loadImage(e){return _.getImage(this._requestManager.transformRequest(e,"Image"),new AbortController)}listImages(){return this.style.listImages()}addLayer(e,t){return this._lazyInitEmptyStyle(),this.style.addLayer(e,t),this._update(!0)}moveLayer(e,t){return this.style.moveLayer(e,t),this._update(!0)}removeLayer(e){return this.style.removeLayer(e),this._update(!0)}getLayer(e){return this.style.getLayer(e)}getLayersOrder(){return this.style.getLayersOrder()}setLayerZoomRange(e,t,i){return this.style.setLayerZoomRange(e,t,i),this._update(!0)}setFilter(e,t,i={}){return this.style.setFilter(e,t,i),this._update(!0)}getFilter(e){return this.style.getFilter(e)}setPaintProperty(e,t,i,r={}){return this.style.setPaintProperty(e,t,i,r),this._update(!0)}getPaintProperty(e,t){return this.style.getPaintProperty(e,t)}setLayoutProperty(e,t,i,r={}){return this.style.setLayoutProperty(e,t,i,r),this._update(!0)}getLayoutProperty(e,t){return this.style.getLayoutProperty(e,t)}setGlyphs(e,t={}){return this._lazyInitEmptyStyle(),this.style.setGlyphs(e,t),this._update(!0)}getGlyphs(){return this.style.getGlyphsUrl()}addSprite(e,t,i={}){return this._lazyInitEmptyStyle(),this.style.addSprite(e,t,i,(e=>{e||this._update(!0);})),this}removeSprite(e){return this._lazyInitEmptyStyle(),this.style.removeSprite(e),this._update(!0)}getSprite(){return this.style.getSprite()}setSprite(e,t={}){return this._lazyInitEmptyStyle(),this.style.setSprite(e,t,(e=>{e||this._update(!0);})),this}setLight(e,t={}){return this._lazyInitEmptyStyle(),this.style.setLight(e,t),this._update(!0)}getLight(){return this.style.getLight()}setSky(e,t={}){return this._lazyInitEmptyStyle(),this.style.setSky(e,t),this._update(!0)}getSky(){return this.style.getSky()}setFeatureState(e,t){return this.style.setFeatureState(e,t),this._update()}removeFeatureState(e,t){return this.style.removeFeatureState(e,t),this._update()}getFeatureState(e){return this.style.getFeatureState(e)}getContainer(){return this._container}getCanvasContainer(){return this._canvasContainer}getCanvas(){return this._canvas}_containerDimensions(){let e=0,t=0;return this._container&&(e=this._container.clientWidth||400,t=this._container.clientHeight||300),[e,t]}_setupContainer(){const e=this._container;e.classList.add("maplibregl-map");const t=this._canvasContainer=wi.create("div","maplibregl-canvas-container",e);this._interactive&&t.classList.add("maplibregl-interactive"),this._canvas=wi.create("canvas","maplibregl-canvas",t),this._canvas.addEventListener("webglcontextlost",this._contextLost,!1),this._canvas.addEventListener("webglcontextrestored",this._contextRestored,!1),this._canvas.setAttribute("tabindex",this._interactive?"0":"-1"),this._canvas.setAttribute("aria-label",this._getUIString("Map.Title")),this._canvas.setAttribute("role","region");const i=this._containerDimensions(),r=this._getClampedPixelRatio(i[0],i[1]);this._resizeCanvas(i[0],i[1],r);const o=this._controlContainer=wi.create("div","maplibregl-control-container",e),a=this._controlPositions={};["top-left","top-right","bottom-left","bottom-right"].forEach((e=>{a[e]=wi.create("div",`maplibregl-ctrl-${e} `,o);})),this._container.addEventListener("scroll",this._onMapScroll,!1);}_resizeCanvas(e,t,i){this._canvas.width=Math.floor(i*e),this._canvas.height=Math.floor(i*t),this._canvas.style.width=`${e}px`,this._canvas.style.height=`${t}px`;}_setupPainter(){const e={alpha:!0,stencil:!0,depth:!0,failIfMajorPerformanceCaveat:this._failIfMajorPerformanceCaveat,preserveDrawingBuffer:this._preserveDrawingBuffer,antialias:this._antialias||!1};let t=null;this._canvas.addEventListener("webglcontextcreationerror",(i=>{t={requestedAttributes:e},i&&(t.statusMessage=i.statusMessage,t.type=i.type);}),{once:!0});const i=this._canvas.getContext("webgl2",e)||this._canvas.getContext("webgl",e);if(!i){const e="Failed to initialize WebGL";throw t?(t.message=e,new Error(JSON.stringify(t))):new Error(e)}this.painter=new Po(i,this.transform),n.testSupport(i);}migrateProjection(e,i){super.migrateProjection(e,i),this.painter.transform=e,this.fire(new t.Event("projectiontransition",{newProjection:this.style.projection.name}));}loaded(){return !this._styleDirty&&!this._sourcesDirty&&!!this.style&&this.style.loaded()}_update(e){return this.style&&this.style._loaded?(this._styleDirty=this._styleDirty||e,this._sourcesDirty=!0,this.triggerRepaint(),this):this}_requestRenderFrame(e){return this._update(),this._renderTaskQueue.add(e)}_cancelRenderFrame(e){this._renderTaskQueue.remove(e);}_render(e){const i=this._idleTriggered?this._fadeDuration:0;if(this.painter.context.setDirty(),this.painter.setBaseState(),this._renderTaskQueue.run(e),this._removed)return;let r=!1;if(this.style&&this._styleDirty){this._styleDirty=!1;const e=this.transform.zoom,o=f.now();this.style.zoomHistory.update(e,o);const a=new t.EvaluationParameters(e,{now:o,fadeDuration:i,zoomHistory:this.style.zoomHistory,transition:this.style.getTransition()}),s=a.crossFadingFactor();1===s&&s===this._crossFadingFactor||(r=!0,this._crossFadingFactor=s),this.style.update(a);}const o=this.transform.newFrameUpdate();this.style&&(this._sourcesDirty||o.forceSourceUpdate)&&(this._sourcesDirty=!1,this.style._updateSources(this.transform)),this.terrain?(this.terrain.sourceCache.update(this.transform,this.terrain),this.transform.setMinElevationForCurrentTile(this.terrain.getMinTileElevationForLngLatZoom(this.transform.center,this.transform.tileZoom)),!this._elevationFreeze&&this._centerClampedToGround&&this.transform.setElevation(this.terrain.getElevationForLngLatZoom(this.transform.center,this.transform.tileZoom))):(this.transform.setMinElevationForCurrentTile(0),this._centerClampedToGround&&this.transform.setElevation(0)),this._placementDirty=this.style&&this.style._updatePlacement(this.transform,this.showCollisionBoxes,i,this._crossSourceCollisions,o.forcePlacementUpdate),o.fireProjectionEvent&&this.fire(new t.Event("projectiontransition",o.fireProjectionEvent)),this.painter.render(this.style,{showTileBoundaries:this.showTileBoundaries,showOverdrawInspector:this._showOverdrawInspector,rotating:this.isRotating(),zooming:this.isZooming(),moving:this.isMoving(),fadeDuration:i,showPadding:this.showPadding}),this.fire(new t.Event("render")),this.loaded()&&!this._loaded&&(this._loaded=!0,t.PerformanceUtils.mark(t.PerformanceMarkers.load),this.fire(new t.Event("load"))),this.style&&(this.style.hasTransitions()||r)&&(this._styleDirty=!0),this.style&&!this._placementDirty&&this.style._releaseSymbolFadeTiles();const a=this._sourcesDirty||this._styleDirty||this._placementDirty||this.style.projection.isRenderingDirty()||this.transform.isRenderingDirty();return a||this._repaint?this.triggerRepaint():!this.isMoving()&&this.loaded()&&this.fire(new t.Event("idle")),!this._loaded||this._fullyLoaded||a||(this._fullyLoaded=!0,t.PerformanceUtils.mark(t.PerformanceMarkers.fullLoad)),this}redraw(){return this.style&&(this._frameRequest&&(this._frameRequest.abort(),this._frameRequest=null),this._render(0)),this}remove(){var e;this._hash&&this._hash.remove();for(const e of this._controls)e.onRemove(this);this._controls=[],this._frameRequest&&(this._frameRequest.abort(),this._frameRequest=null),this._renderTaskQueue.clear(),this.painter.destroy(),this.handlers.destroy(),delete this.handlers,this.setStyle(null),"undefined"!=typeof window&&removeEventListener("online",this._onWindowOnline,!1),_.removeThrottleControl(this._imageQueueHandle),null===(e=this._resizeObserver)||void 0===e||e.disconnect();const i=this.painter.context.gl.getExtension("WEBGL_lose_context");(null==i?void 0:i.loseContext)&&i.loseContext(),this._canvas.removeEventListener("webglcontextrestored",this._contextRestored,!1),this._canvas.removeEventListener("webglcontextlost",this._contextLost,!1),wi.remove(this._canvasContainer),wi.remove(this._controlContainer),this._container.removeEventListener("scroll",this._onMapScroll,!1),this._container.classList.remove("maplibregl-map"),t.PerformanceUtils.clearMetrics(),this._removed=!0,this.fire(new t.Event("remove"));}triggerRepaint(){this.style&&!this._frameRequest&&(this._frameRequest=new AbortController,f.frameAsync(this._frameRequest).then((e=>{t.PerformanceUtils.frame(e),this._frameRequest=null,this._render(e);})).catch((()=>{})));}get showTileBoundaries(){return !!this._showTileBoundaries}set showTileBoundaries(e){this._showTileBoundaries!==e&&(this._showTileBoundaries=e,this._update());}get showPadding(){return !!this._showPadding}set showPadding(e){this._showPadding!==e&&(this._showPadding=e,this._update());}get showCollisionBoxes(){return !!this._showCollisionBoxes}set showCollisionBoxes(e){this._showCollisionBoxes!==e&&(this._showCollisionBoxes=e,e?this.style._generateCollisionBoxes():this._update());}get showOverdrawInspector(){return !!this._showOverdrawInspector}set showOverdrawInspector(e){this._showOverdrawInspector!==e&&(this._showOverdrawInspector=e,this._update());}get repaint(){return !!this._repaint}set repaint(e){this._repaint!==e&&(this._repaint=e,this.triggerRepaint());}get vertices(){return !!this._vertices}set vertices(e){this._vertices=e,this._update();}get version(){return Ba}getCameraTargetElevation(){return this.transform.elevation}getProjection(){return this.style.getProjection()}setProjection(e){return this._lazyInitEmptyStyle(),this.style.setProjection(e),this._update(!0)}};const ja=e=>new Promise(((t,i)=>{e&&(e.stubRender=null==e.stubRender||e.stubRender,e.showMap=null!=e.showMap&&e.showMap);const 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s=0;s{this.startMove(e,wi.mousePos(this.element,e)),wi.addEventListener(window,"mousemove",this.mousemove),wi.addEventListener(window,"mouseup",this.mouseup);},this.mousemove=e=>{this.move(e,wi.mousePos(this.element,e));},this.mouseup=e=>{this._rotatePitchHanlder.dragEnd(e),this.offTemp();},this.touchstart=e=>{1!==e.targetTouches.length?this.reset():(this._startPos=this._lastPos=wi.touchPos(this.element,e.targetTouches)[0],this.startMove(e,this._startPos),wi.addEventListener(window,"touchmove",this.touchmove,{passive:!1}),wi.addEventListener(window,"touchend",this.touchend));},this.touchmove=e=>{1!==e.targetTouches.length?this.reset():(this._lastPos=wi.touchPos(this.element,e.targetTouches)[0],this.move(e,this._lastPos));},this.touchend=e=>{0===e.targetTouches.length&&this._startPos&&this._lastPos&&this._startPos.dist(this._lastPos){this._rotatePitchHanlder.reset(),delete this._startPos,delete this._lastPos,this.offTemp();},this._clickTolerance=10,this.element=i;const o=new 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e=this.element;wi.removeEventListener(e,"mousedown",this.mousedown),wi.removeEventListener(e,"touchstart",this.touchstart,{passive:!1}),wi.removeEventListener(window,"touchmove",this.touchmove,{passive:!1}),wi.removeEventListener(window,"touchend",this.touchend),wi.removeEventListener(e,"touchcancel",this.reset),this.offTemp();}offTemp(){wi.enableDrag(),wi.removeEventListener(window,"mousemove",this.mousemove),wi.removeEventListener(window,"mouseup",this.mouseup),wi.removeEventListener(window,"touchmove",this.touchmove,{passive:!1}),wi.removeEventListener(window,"touchend",this.touchend);}}let ns;function ls(e,i,r){const o=new t.LngLat(e.lng,e.lat);if(e=new t.LngLat(e.lng,e.lat),i){const o=new t.LngLat(e.lng-360,e.lat),a=new t.LngLat(e.lng+360,e.lat),s=r.locationToScreenPoint(e).distSqr(i);r.locationToScreenPoint(o).distSqr(i)180;){const t=r.locationToScreenPoint(e);if(t.x>=0&&t.y>=0&&t.x<=r.width&&t.y<=r.height)break;e.lng>r.center.lng?e.lng-=360:e.lng+=360;}return e.lng!==o.lng&&r.isPointOnMapSurface(r.locationToScreenPoint(e))?e:o}const cs={center:"translate(-50%,-50%)",top:"translate(-50%,0)","top-left":"translate(0,0)","top-right":"translate(-100%,0)",bottom:"translate(-50%,-100%)","bottom-left":"translate(0,-100%)","bottom-right":"translate(-100%,-100%)",left:"translate(0,-50%)",right:"translate(-100%,-50%)"};function hs(e,t,i){const r=e.classList;for(const e in cs)r.remove(`maplibregl-${i}-anchor-${e}`);r.add(`maplibregl-${i}-anchor-${t}`);}class us extends t.Evented{constructor(e){if(super(),this._onKeyPress=e=>{const t=e.code,i=e.charCode||e.keyCode;"Space"!==t&&"Enter"!==t&&32!==i&&13!==i||this.togglePopup();},this._onMapClick=e=>{const t=e.originalEvent.target,i=this._element;this._popup&&(t===i||i.contains(t))&&this.togglePopup();},this._update=e=>{var t;if(!this._map)return;const i=this._map.loaded()&&!this._map.isMoving();("terrain"===(null==e?void 0:e.type)||"render"===(null==e?void 0:e.type)&&!i)&&this._map.once("render",this._update),this._lngLat=this._map.transform.renderWorldCopies?ls(this._lngLat,this._flatPos,this._map.transform):null===(t=this._lngLat)||void 0===t?void 0:t.wrap(),this._flatPos=this._pos=this._map.project(this._lngLat)._add(this._offset),this._map.terrain&&(this._flatPos=this._map.transform.locationToScreenPoint(this._lngLat)._add(this._offset));let r="";"viewport"===this._rotationAlignment||"auto"===this._rotationAlignment?r=`rotateZ(${this._rotation}deg)`:"map"===this._rotationAlignment&&(r=`rotateZ(${this._rotation-this._map.getBearing()}deg)`);let o="";"viewport"===this._pitchAlignment||"auto"===this._pitchAlignment?o="rotateX(0deg)":"map"===this._pitchAlignment&&(o=`rotateX(${this._map.getPitch()}deg)`),this._subpixelPositioning||e&&"moveend"!==e.type||(this._pos=this._pos.round()),wi.setTransform(this._element,`${cs[this._anchor]} translate(${this._pos.x}px, ${this._pos.y}px) ${o} ${r}`),f.frameAsync(new AbortController).then((()=>{this._updateOpacity(e&&"moveend"===e.type);})).catch((()=>{}));},this._onMove=e=>{if(!this._isDragging){const t=this._clickTolerance||this._map._clickTolerance;this._isDragging=e.point.dist(this._pointerdownPos)>=t;}this._isDragging&&(this._pos=e.point.sub(this._positionDelta),this._lngLat=this._map.unproject(this._pos),this.setLngLat(this._lngLat),this._element.style.pointerEvents="none","pending"===this._state&&(this._state="active",this.fire(new t.Event("dragstart"))),this.fire(new t.Event("drag")));},this._onUp=()=>{this._element.style.pointerEvents="auto",this._positionDelta=null,this._pointerdownPos=null,this._isDragging=!1,this._map.off("mousemove",this._onMove),this._map.off("touchmove",this._onMove),"active"===this._state&&this.fire(new t.Event("dragend")),this._state="inactive";},this._addDragHandler=e=>{this._element.contains(e.originalEvent.target)&&(e.preventDefault(),this._positionDelta=e.point.sub(this._pos).add(this._offset),this._pointerdownPos=e.point,this._state="pending",this._map.on("mousemove",this._onMove),this._map.on("touchmove",this._onMove),this._map.once("mouseup",this._onUp),this._map.once("touchend",this._onUp));},this._anchor=e&&e.anchor||"center",this._color=e&&e.color||"#3FB1CE",this._scale=e&&e.scale||1,this._draggable=e&&e.draggable||!1,this._clickTolerance=e&&e.clickTolerance||0,this._subpixelPositioning=e&&e.subpixelPositioning||!1,this._isDragging=!1,this._state="inactive",this._rotation=e&&e.rotation||0,this._rotationAlignment=e&&e.rotationAlignment||"auto",this._pitchAlignment=e&&e.pitchAlignment&&"auto"!==e.pitchAlignment?e.pitchAlignment:this._rotationAlignment,this.setOpacity(),this.setOpacity(null==e?void 0:e.opacity,null==e?void 0:e.opacityWhenCovered),e&&e.element)this._element=e.element,this._offset=t.Point.convert(e&&e.offset||[0,0]);else {this._defaultMarker=!0,this._element=wi.create("div");const i=wi.createNS("http://www.w3.org/2000/svg","svg"),r=41,o=27;i.setAttributeNS(null,"display","block"),i.setAttributeNS(null,"height",`${r}px`),i.setAttributeNS(null,"width",`${o}px`),i.setAttributeNS(null,"viewBox",`0 0 ${o} ${r}`);const a=wi.createNS("http://www.w3.org/2000/svg","g");a.setAttributeNS(null,"stroke","none"),a.setAttributeNS(null,"stroke-width","1"),a.setAttributeNS(null,"fill","none"),a.setAttributeNS(null,"fill-rule","evenodd");const s=wi.createNS("http://www.w3.org/2000/svg","g");s.setAttributeNS(null,"fill-rule","nonzero");const n=wi.createNS("http://www.w3.org/2000/svg","g");n.setAttributeNS(null,"transform","translate(3.0, 29.0)"),n.setAttributeNS(null,"fill","#000000");const 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p=wi.createNS("http://www.w3.org/2000/svg","g");p.setAttributeNS(null,"transform","translate(8.0, 8.0)");const m=wi.createNS("http://www.w3.org/2000/svg","circle");m.setAttributeNS(null,"fill","#000000"),m.setAttributeNS(null,"opacity","0.25"),m.setAttributeNS(null,"cx","5.5"),m.setAttributeNS(null,"cy","5.5"),m.setAttributeNS(null,"r","5.4999962");const f=wi.createNS("http://www.w3.org/2000/svg","circle");f.setAttributeNS(null,"fill","#FFFFFF"),f.setAttributeNS(null,"cx","5.5"),f.setAttributeNS(null,"cy","5.5"),f.setAttributeNS(null,"r","5.4999962"),p.appendChild(m),p.appendChild(f),s.appendChild(n),s.appendChild(c),s.appendChild(u),s.appendChild(_),s.appendChild(p),i.appendChild(s),i.setAttributeNS(null,"height",r*this._scale+"px"),i.setAttributeNS(null,"width",o*this._scale+"px"),this._element.appendChild(i),this._offset=t.Point.convert(e&&e.offset||[0,-14]);}if(this._element.classList.add("maplibregl-marker"),this._element.addEventListener("dragstart",(e=>{e.preventDefault();})),this._element.addEventListener("mousedown",(e=>{e.preventDefault();})),hs(this._element,this._anchor,"marker"),e&&e.className)for(const t of e.className.split(" "))this._element.classList.add(t);this._popup=null;}addTo(e){return this.remove(),this._map=e,this._element.setAttribute("aria-label",e._getUIString("Marker.Title")),e.getCanvasContainer().appendChild(this._element),e.on("move",this._update),e.on("moveend",this._update),e.on("terrain",this._update),e.on("projectiontransition",this._update),this.setDraggable(this._draggable),this._update(),this._map.on("click",this._onMapClick),this}remove(){return this._opacityTimeout&&(clearTimeout(this._opacityTimeout),delete this._opacityTimeout),this._map&&(this._map.off("click",this._onMapClick),this._map.off("move",this._update),this._map.off("moveend",this._update),this._map.off("terrain",this._update),this._map.off("projectiontransition",this._update),this._map.off("mousedown",this._addDragHandler),this._map.off("touchstart",this._addDragHandler),this._map.off("mouseup",this._onUp),this._map.off("touchend",this._onUp),this._map.off("mousemove",this._onMove),this._map.off("touchmove",this._onMove),delete this._map),wi.remove(this._element),this._popup&&this._popup.remove(),this}getLngLat(){return this._lngLat}setLngLat(e){return this._lngLat=t.LngLat.convert(e),this._pos=null,this._popup&&this._popup.setLngLat(this._lngLat),this._update(),this}getElement(){return this._element}setPopup(e){if(this._popup&&(this._popup.remove(),this._popup=null,this._element.removeEventListener("keypress",this._onKeyPress),this._originalTabIndex||this._element.removeAttribute("tabindex")),e){if(!("offset"in e.options)){const t=38.1,i=13.5,r=Math.abs(i)/Math.SQRT2;e.options.offset=this._defaultMarker?{top:[0,0],"top-left":[0,0],"top-right":[0,0],bottom:[0,-t],"bottom-left":[r,-1*(t-i+r)],"bottom-right":[-r,-1*(t-i+r)],left:[i,-1*(t-i)],right:[-i,-1*(t-i)]}:this._offset;}this._popup=e,this._originalTabIndex=this._element.getAttribute("tabindex"),this._originalTabIndex||this._element.setAttribute("tabindex","0"),this._element.addEventListener("keypress",this._onKeyPress);}return this}setSubpixelPositioning(e){return this._subpixelPositioning=e,this}getPopup(){return this._popup}togglePopup(){const e=this._popup;return this._element.style.opacity===this._opacityWhenCovered?this:e?(e.isOpen()?e.remove():(e.setLngLat(this._lngLat),e.addTo(this._map)),this):this}_updateOpacity(e=!1){var i,r;if(!(null===(i=this._map)||void 0===i?void 0:i.terrain)){const e=this._map.transform.isLocationOccluded(this._lngLat)?this._opacityWhenCovered:this._opacity;return void(this._element.style.opacity!==e&&(this._element.style.opacity=e))}if(e)this._opacityTimeout=null;else {if(this._opacityTimeout)return;this._opacityTimeout=setTimeout((()=>{this._opacityTimeout=null;}),100);}const o=this._map,a=o.terrain.depthAtPoint(this._pos),s=o.terrain.getElevationForLngLatZoom(this._lngLat,o.transform.tileZoom);if(o.transform.lngLatToCameraDepth(this._lngLat,s)-a<.006)return void(this._element.style.opacity=this._opacity);const n=-this._offset.y/o.transform.pixelsPerMeter,l=Math.sin(o.getPitch()*Math.PI/180)*n,c=o.terrain.depthAtPoint(new t.Point(this._pos.x,this._pos.y-this._offset.y)),h=o.transform.lngLatToCameraDepth(this._lngLat,s+l)-c>.006;(null===(r=this._popup)||void 0===r?void 0:r.isOpen())&&h&&this._popup.remove(),this._element.style.opacity=h?this._opacityWhenCovered:this._opacity;}getOffset(){return this._offset}setOffset(e){return this._offset=t.Point.convert(e),this._update(),this}addClassName(e){this._element.classList.add(e);}removeClassName(e){this._element.classList.remove(e);}toggleClassName(e){return this._element.classList.toggle(e)}setDraggable(e){return this._draggable=!!e,this._map&&(e?(this._map.on("mousedown",this._addDragHandler),this._map.on("touchstart",this._addDragHandler)):(this._map.off("mousedown",this._addDragHandler),this._map.off("touchstart",this._addDragHandler))),this}isDraggable(){return this._draggable}setRotation(e){return this._rotation=e||0,this._update(),this}getRotation(){return this._rotation}setRotationAlignment(e){return this._rotationAlignment=e||"auto",this._update(),this}getRotationAlignment(){return this._rotationAlignment}setPitchAlignment(e){return this._pitchAlignment=e&&"auto"!==e?e:this._rotationAlignment,this._update(),this}getPitchAlignment(){return this._pitchAlignment}setOpacity(e,t){return void 0===e&&void 0===t&&(this._opacity="1",this._opacityWhenCovered="0.2"),void 0!==e&&(this._opacity=e),void 0!==t&&(this._opacityWhenCovered=t),this._map&&this._updateOpacity(!0),this}}const ds={positionOptions:{enableHighAccuracy:!1,maximumAge:0,timeout:6e3},fitBoundsOptions:{maxZoom:15},trackUserLocation:!1,showAccuracyCircle:!0,showUserLocation:!0};let _s=0,ps=!1;const ms={maxWidth:100,unit:"metric"};function fs(e,t,i){const r=i&&i.maxWidth||100,o=e._container.clientHeight/2,a=e._container.clientWidth/2,s=e.unproject([a-r/2,o]),n=e.unproject([a+r/2,o]),l=Math.round(e.project(n).x-e.project(s).x),c=Math.min(r,l,e._container.clientWidth),h=s.distanceTo(n);if(i&&"imperial"===i.unit){const i=3.2808*h;i>5280?gs(t,c,i/5280,e._getUIString("ScaleControl.Miles")):gs(t,c,i,e._getUIString("ScaleControl.Feet"));}else i&&"nautical"===i.unit?gs(t,c,h/1852,e._getUIString("ScaleControl.NauticalMiles")):h>=1e3?gs(t,c,h/1e3,e._getUIString("ScaleControl.Kilometers")):gs(t,c,h,e._getUIString("ScaleControl.Meters"));}function gs(e,t,i,r){const o=function(e){const t=Math.pow(10,`${Math.floor(e)}`.length-1);let i=e/t;return i=i>=10?10:i>=5?5:i>=3?3:i>=2?2:i>=1?1:function(e){const t=Math.pow(10,Math.ceil(-Math.log(e)/Math.LN10));return Math.round(e*t)/t}(i),t*i}(i);e.style.width=t*(o/i)+"px",e.innerHTML=`${o} ${r}`;}const vs={closeButton:!0,closeOnClick:!0,focusAfterOpen:!0,className:"",maxWidth:"240px",subpixelPositioning:!1},ys=["a[href]","[tabindex]:not([tabindex='-1'])","[contenteditable]:not([contenteditable='false'])","button:not([disabled])","input:not([disabled])","select:not([disabled])","textarea:not([disabled])"].join(", ");function xs(e){if(e){if("number"==typeof e){const i=Math.round(Math.abs(e)/Math.SQRT2);return {center:new t.Point(0,0),top:new t.Point(0,e),"top-left":new t.Point(i,i),"top-right":new t.Point(-i,i),bottom:new t.Point(0,-e),"bottom-left":new t.Point(i,-i),"bottom-right":new t.Point(-i,-i),left:new t.Point(e,0),right:new t.Point(-e,0)}}if(e instanceof t.Point||Array.isArray(e)){const i=t.Point.convert(e);return {center:i,top:i,"top-left":i,"top-right":i,bottom:i,"bottom-left":i,"bottom-right":i,left:i,right:i}}return {center:t.Point.convert(e.center||[0,0]),top:t.Point.convert(e.top||[0,0]),"top-left":t.Point.convert(e["top-left"]||[0,0]),"top-right":t.Point.convert(e["top-right"]||[0,0]),bottom:t.Point.convert(e.bottom||[0,0]),"bottom-left":t.Point.convert(e["bottom-left"]||[0,0]),"bottom-right":t.Point.convert(e["bottom-right"]||[0,0]),left:t.Point.convert(e.left||[0,0]),right:t.Point.convert(e.right||[0,0])}}return xs(new t.Point(0,0))}const bs=Ti,ws=r(o),Ts=window.benchmarks=[];function Es(e,t,i,r){const o=[];for(const e of ["https://api.maptiler.com/maps/streets/style.json?key=get_your_own_OpIi9ZULNHzrESv6T2vL"])o.push({name:"string"==typeof e?e:e.name,bench:new t(e,i)});Ts.push({name:e,versions:o,location:r});}Es("StyleLayerCreate",Ka),Es("Validate",Ha),ws.forEach((e=>Es("Layout",bi,e.tileID,e))),ws.forEach((e=>Es("Paint",Ga,[e],e))),Es("QueryPoint",Ja,ws),Es("QueryBox",Qa,ws),Promise.resolve().then((()=>{B().acquire(-1);}));class Ps extends a{constructor(e){super(),this._pitch=e;}bench(){const e=new Jt,i=new _i(e,!0);i.setCenter(new t.LngLat(0,0)),i.setZoom(4),i.resize(4096,4096),i.setMaxPitch(this._pitch),i.setPitch(this._pitch);for(let e=0;e<40;e++)i.setCenter(new t.LngLat(.2*e,0)),ve(i,{tileSize:256});}}const Is=r(o).filter((e=>e.zoom<15));function Cs(e,t){window.maplibreglBenchmarks[e]=window.maplibreglBenchmarks[e]||{},window.maplibreglBenchmarks[e]["main 8dba921"]=t;}window.maplibreglBenchmarks=window.maplibreglBenchmarks||{};const Ms="https://api.maptiler.com/maps/streets/style.json?key=get_your_own_OpIi9ZULNHzrESv6T2vL",Ss=[-77.032194,38.912753],Rs=[4,8,11,13,15,17].map((e=>({center:Ss,zoom:e})));Cs("Paint",new Ga(Ms,Rs)),Cs("QueryPoint",new Ja(Ms,Rs)),Cs("QueryBox",new Qa(Ms,Rs)),Cs("Layout",new bi(Ms)),Cs("Placement",new class extends a{constructor(e,t){super(),this.style=e,this.locations=t;}setup(){return t.__awaiter(this,void 0,void 0,(function*(){try{this.maps=yield 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0:e.fullscreenElement;)t=t.shadowRoot.fullscreenElement;t===this._container!==this._fullscreen&&this._handleFullscreenChange();},this._onClickFullscreen=()=>{this._isFullscreen()?this._exitFullscreen():this._requestFullscreen();},this._fullscreen=!1,e&&e.container&&(e.container instanceof HTMLElement?this._container=e.container:t.warnOnce("Full screen control 'container' must be a DOM element.")),"onfullscreenchange"in document?this._fullscreenchange="fullscreenchange":"onmozfullscreenchange"in document?this._fullscreenchange="mozfullscreenchange":"onwebkitfullscreenchange"in document?this._fullscreenchange="webkitfullscreenchange":"onmsfullscreenchange"in document&&(this._fullscreenchange="MSFullscreenChange");}onAdd(e){return this._map=e,this._container||(this._container=this._map.getContainer()),this._controlContainer=wi.create("div","maplibregl-ctrl 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this._fullscreen}_handleFullscreenChange(){this._fullscreen=!this._fullscreen,this._fullscreenButton.classList.toggle("maplibregl-ctrl-shrink"),this._fullscreenButton.classList.toggle("maplibregl-ctrl-fullscreen"),this._updateTitle(),this._fullscreen?(this.fire(new t.Event("fullscreenstart")),this._prevCooperativeGesturesEnabled=this._map.cooperativeGestures.isEnabled(),this._map.cooperativeGestures.disable()):(this.fire(new t.Event("fullscreenend")),this._prevCooperativeGesturesEnabled&&this._map.cooperativeGestures.enable());}_exitFullscreen(){window.document.exitFullscreen?window.document.exitFullscreen():window.document.mozCancelFullScreen?window.document.mozCancelFullScreen():window.document.msExitFullscreen?window.document.msExitFullscreen():window.document.webkitCancelFullScreen?window.document.webkitCancelFullScreen():this._togglePseudoFullScreen();}_requestFullscreen(){this._container.requestFullscreen?this._container.requestFullscreen():this._container.mozRequestFullScreen?this._container.mozRequestFullScreen():this._container.msRequestFullscreen?this._container.msRequestFullscreen():this._container.webkitRequestFullscreen?this._container.webkitRequestFullscreen():this._togglePseudoFullScreen();}_togglePseudoFullScreen(){this._container.classList.toggle("maplibregl-pseudo-fullscreen"),this._handleFullscreenChange(),this._map.resize();}},e.GeoJSONSource=H,e.GeolocateControl=class extends t.Evented{constructor(e){super(),this._onSuccess=e=>{if(this._map){if(this._isOutOfMapMaxBounds(e))return this._setErrorState(),this.fire(new t.Event("outofmaxbounds",e)),this._updateMarker(),void this._finish();if(this.options.trackUserLocation)switch(this._lastKnownPosition=e,this._watchState){case"WAITING_ACTIVE":case"ACTIVE_LOCK":case"ACTIVE_ERROR":this._watchState="ACTIVE_LOCK",this._geolocateButton.classList.remove("maplibregl-ctrl-geolocate-waiting"),this._geolocateButton.classList.remove("maplibregl-ctrl-geolocate-active-error"),this._geolocateButton.classList.add("maplibregl-ctrl-geolocate-active");break;case"BACKGROUND":case"BACKGROUND_ERROR":this._watchState="BACKGROUND",this._geolocateButton.classList.remove("maplibregl-ctrl-geolocate-waiting"),this._geolocateButton.classList.remove("maplibregl-ctrl-geolocate-background-error"),this._geolocateButton.classList.add("maplibregl-ctrl-geolocate-background");break;default:throw new Error(`Unexpected watchState 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{if(3===e.code&&ps)return;this._setErrorState();}"OFF"!==this._watchState&&this.options.showUserLocation&&this._dotElement.classList.add("maplibregl-user-location-dot-stale"),this.fire(new t.Event("error",e)),this._finish();}},this._finish=()=>{this._timeoutId&&clearTimeout(this._timeoutId),this._timeoutId=void 0;},this._setupUI=()=>{this._map&&(this._container.addEventListener("contextmenu",(e=>e.preventDefault())),this._geolocateButton=wi.create("button","maplibregl-ctrl-geolocate",this._container),wi.create("span","maplibregl-ctrl-icon",this._geolocateButton).setAttribute("aria-hidden","true"),this._geolocateButton.type="button",this._geolocateButton.disabled=!0);},this._finishSetupUI=e=>{if(this._map){if(!1===e){t.warnOnce("Geolocation support is not available so the GeolocateControl will be disabled.");const e=this._map._getUIString("GeolocateControl.LocationNotAvailable");this._geolocateButton.disabled=!0,this._geolocateButton.title=e,this._geolocateButton.setAttribute("aria-label",e);}else {const e=this._map._getUIString("GeolocateControl.FindMyLocation");this._geolocateButton.disabled=!1,this._geolocateButton.title=e,this._geolocateButton.setAttribute("aria-label",e);}this.options.trackUserLocation&&(this._geolocateButton.setAttribute("aria-pressed","false"),this._watchState="OFF"),this.options.showUserLocation&&(this._dotElement=wi.create("div","maplibregl-user-location-dot"),this._userLocationDotMarker=new us({element:this._dotElement}),this._circleElement=wi.create("div","maplibregl-user-location-accuracy-circle"),this._accuracyCircleMarker=new us({element:this._circleElement,pitchAlignment:"map"}),this.options.trackUserLocation&&(this._watchState="OFF"),this._map.on("zoom",this._onZoom)),this._geolocateButton.addEventListener("click",(()=>this.trigger())),this._setup=!0,this.options.trackUserLocation&&this._map.on("movestart",(e=>{e.geolocateSource||"ACTIVE_LOCK"!==this._watchState||e.originalEvent&&"resize"===e.originalEvent.type||(this._watchState="BACKGROUND",this._geolocateButton.classList.add("maplibregl-ctrl-geolocate-background"),this._geolocateButton.classList.remove("maplibregl-ctrl-geolocate-active"),this.fire(new t.Event("trackuserlocationend")),this.fire(new t.Event("userlocationlostfocus")));}));}},this.options=t.extend({},ds,e);}onAdd(e){return this._map=e,this._container=wi.create("div","maplibregl-ctrl maplibregl-ctrl-group"),this._setupUI(),function(){return t.__awaiter(this,arguments,void 0,(function*(e=!1){if(void 0!==ns&&!e)return ns;if(void 0===window.navigator.permissions)return ns=!!window.navigator.geolocation,ns;try{const e=yield window.navigator.permissions.query({name:"geolocation"});ns="denied"!==e.state;}catch(e){ns=!!window.navigator.geolocation;}return ns}))}().then((e=>this._finishSetupUI(e))),this._container}onRemove(){void 0!==this._geolocationWatchID&&(window.navigator.geolocation.clearWatch(this._geolocationWatchID),this._geolocationWatchID=void 0),this.options.showUserLocation&&this._userLocationDotMarker&&this._userLocationDotMarker.remove(),this.options.showAccuracyCircle&&this._accuracyCircleMarker&&this._accuracyCircleMarker.remove(),wi.remove(this._container),this._map.off("zoom",this._onZoom),this._map=void 0,_s=0,ps=!1;}_isOutOfMapMaxBounds(e){const t=this._map.getMaxBounds(),i=e.coords;return t&&(i.longitudet.getEast()||i.latitudet.getNorth())}_setErrorState(){switch(this._watchState){case"WAITING_ACTIVE":this._watchState="ACTIVE_ERROR",this._geolocateButton.classList.remove("maplibregl-ctrl-geolocate-active"),this._geolocateButton.classList.add("maplibregl-ctrl-geolocate-active-error");break;case"ACTIVE_LOCK":this._watchState="ACTIVE_ERROR",this._geolocateButton.classList.remove("maplibregl-ctrl-geolocate-active"),this._geolocateButton.classList.add("maplibregl-ctrl-geolocate-active-error"),this._geolocateButton.classList.add("maplibregl-ctrl-geolocate-waiting");break;case"BACKGROUND":this._watchState="BACKGROUND_ERROR",this._geolocateButton.classList.remove("maplibregl-ctrl-geolocate-background"),this._geolocateButton.classList.add("maplibregl-ctrl-geolocate-background-error"),this._geolocateButton.classList.add("maplibregl-ctrl-geolocate-waiting");break;case"ACTIVE_ERROR":break;default:throw new Error(`Unexpected watchState 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t.Event("trackuserlocationstart"));break;case"WAITING_ACTIVE":case"ACTIVE_LOCK":case"ACTIVE_ERROR":case"BACKGROUND_ERROR":_s--,ps=!1,this._watchState="OFF",this._geolocateButton.classList.remove("maplibregl-ctrl-geolocate-waiting"),this._geolocateButton.classList.remove("maplibregl-ctrl-geolocate-active"),this._geolocateButton.classList.remove("maplibregl-ctrl-geolocate-active-error"),this._geolocateButton.classList.remove("maplibregl-ctrl-geolocate-background"),this._geolocateButton.classList.remove("maplibregl-ctrl-geolocate-background-error"),this.fire(new t.Event("trackuserlocationend"));break;case"BACKGROUND":this._watchState="ACTIVE_LOCK",this._geolocateButton.classList.remove("maplibregl-ctrl-geolocate-background"),this._lastKnownPosition&&this._updateCamera(this._lastKnownPosition),this.fire(new t.Event("trackuserlocationstart")),this.fire(new t.Event("userlocationfocus"));break;default:throw new Error(`Unexpected watchState ${this._watchState}`)}switch(this._watchState){case"WAITING_ACTIVE":this._geolocateButton.classList.add("maplibregl-ctrl-geolocate-waiting"),this._geolocateButton.classList.add("maplibregl-ctrl-geolocate-active");break;case"ACTIVE_LOCK":this._geolocateButton.classList.add("maplibregl-ctrl-geolocate-active");break;case"OFF":break;default:throw new Error(`Unexpected watchState ${this._watchState}`)}if("OFF"===this._watchState&&void 0!==this._geolocationWatchID)this._clearWatch();else if(void 0===this._geolocationWatchID){let e;this._geolocateButton.classList.add("maplibregl-ctrl-geolocate-waiting"),this._geolocateButton.setAttribute("aria-pressed","true"),_s++,_s>1?(e={maximumAge:6e5,timeout:0},ps=!0):(e=this.options.positionOptions,ps=!1),this._geolocationWatchID=window.navigator.geolocation.watchPosition(this._onSuccess,this._onError,e);}}else window.navigator.geolocation.getCurrentPosition(this._onSuccess,this._onError,this.options.positionOptions),this._timeoutId=setTimeout(this._finish,1e4);return !0}_clearWatch(){window.navigator.geolocation.clearWatch(this._geolocationWatchID),this._geolocationWatchID=void 0,this._geolocateButton.classList.remove("maplibregl-ctrl-geolocate-waiting"),this._geolocateButton.setAttribute("aria-pressed","false"),this.options.showUserLocation&&this._updateMarker(null);}},e.GlobeControl=class{constructor(){this._toggleProjection=()=>{var e;const t=null===(e=this._map.getProjection())||void 0===e?void 0:e.type;this._map.setProjection("mercator"!==t&&t?{type:"mercator"}:{type:"globe"}),this._updateGlobeIcon();},this._updateGlobeIcon=()=>{var e;this._globeButton.classList.remove("maplibregl-ctrl-globe"),this._globeButton.classList.remove("maplibregl-ctrl-globe-enabled"),"globe"===(null===(e=this._map.getProjection())||void 0===e?void 0:e.type)?(this._globeButton.classList.add("maplibregl-ctrl-globe-enabled"),this._globeButton.title=this._map._getUIString("GlobeControl.Disable")):(this._globeButton.classList.add("maplibregl-ctrl-globe"),this._globeButton.title=this._map._getUIString("GlobeControl.Enable"));};}onAdd(e){return this._map=e,this._container=wi.create("div","maplibregl-ctrl maplibregl-ctrl-group"),this._globeButton=wi.create("button","maplibregl-ctrl-globe",this._container),wi.create("span","maplibregl-ctrl-icon",this._globeButton).setAttribute("aria-hidden","true"),this._globeButton.type="button",this._globeButton.addEventListener("click",this._toggleProjection),this._updateGlobeIcon(),this._map.on("styledata",this._updateGlobeIcon),this._container}onRemove(){wi.remove(this._container),this._map.off("styledata",this._updateGlobeIcon),this._globeButton.removeEventListener("click",this._toggleProjection),this._map=void 0;}},e.Hash=Co,e.ImageSource=K,e.KeyboardHandler=ha,e.LngLatBounds=V,e.LogoControl=Ma,e.Map=Ua,e.MapMouseEvent=Bo,e.MapTouchEvent=Oo,e.MapWheelEvent=Uo,e.Marker=us,e.NavigationControl=class{constructor(e){this._updateZoomButtons=()=>{const e=this._map.getZoom(),t=e===this._map.getMaxZoom(),i=e===this._map.getMinZoom();this._zoomInButton.disabled=t,this._zoomOutButton.disabled=i,this._zoomInButton.setAttribute("aria-disabled",t.toString()),this._zoomOutButton.setAttribute("aria-disabled",i.toString());},this._rotateCompassArrow=()=>{this._compassIcon.style.transform=this.options.visualizePitch&&this.options.visualizeRoll?`scale(${1/Math.pow(Math.cos(this._map.transform.pitchInRadians),.5)}) rotateZ(${-this._map.transform.roll}deg) rotateX(${this._map.transform.pitch}deg) rotateZ(${-this._map.transform.bearing}deg)`:this.options.visualizePitch?`scale(${1/Math.pow(Math.cos(this._map.transform.pitchInRadians),.5)}) rotateX(${this._map.transform.pitch}deg) rotateZ(${-this._map.transform.bearing}deg)`:this.options.visualizeRoll?`rotate(${-this._map.transform.bearing-this._map.transform.roll}deg)`:`rotate(${-this._map.transform.bearing}deg)`;},this._setButtonTitle=(e,t)=>{const i=this._map._getUIString(`NavigationControl.${t}`);e.title=i,e.setAttribute("aria-label",i);},this.options=t.extend({},as,e),this._container=wi.create("div","maplibregl-ctrl maplibregl-ctrl-group"),this._container.addEventListener("contextmenu",(e=>e.preventDefault())),this.options.showZoom&&(this._zoomInButton=this._createButton("maplibregl-ctrl-zoom-in",(e=>this._map.zoomIn({},{originalEvent:e}))),wi.create("span","maplibregl-ctrl-icon",this._zoomInButton).setAttribute("aria-hidden","true"),this._zoomOutButton=this._createButton("maplibregl-ctrl-zoom-out",(e=>this._map.zoomOut({},{originalEvent:e}))),wi.create("span","maplibregl-ctrl-icon",this._zoomOutButton).setAttribute("aria-hidden","true")),this.options.showCompass&&(this._compass=this._createButton("maplibregl-ctrl-compass",(e=>{this.options.visualizePitch?this._map.resetNorthPitch({},{originalEvent:e}):this._map.resetNorth({},{originalEvent:e});})),this._compassIcon=wi.create("span","maplibregl-ctrl-icon",this._compass),this._compassIcon.setAttribute("aria-hidden","true"));}onAdd(e){return this._map=e,this.options.showZoom&&(this._setButtonTitle(this._zoomInButton,"ZoomIn"),this._setButtonTitle(this._zoomOutButton,"ZoomOut"),this._map.on("zoom",this._updateZoomButtons),this._updateZoomButtons()),this.options.showCompass&&(this._setButtonTitle(this._compass,"ResetBearing"),this.options.visualizePitch&&this._map.on("pitch",this._rotateCompassArrow),this.options.visualizeRoll&&this._map.on("roll",this._rotateCompassArrow),this._map.on("rotate",this._rotateCompassArrow),this._rotateCompassArrow(),this._handler=new ss(this._map,this._compass,this.options.visualizePitch)),this._container}onRemove(){wi.remove(this._container),this.options.showZoom&&this._map.off("zoom",this._updateZoomButtons),this.options.showCompass&&(this.options.visualizePitch&&this._map.off("pitch",this._rotateCompassArrow),this.options.visualizeRoll&&this._map.off("roll",this._rotateCompassArrow),this._map.off("rotate",this._rotateCompassArrow),this._handler.off(),delete this._handler),delete this._map;}_createButton(e,t){const i=wi.create("button",e,this._container);return i.type="button",i.addEventListener("click",t),i}},e.Popup=class extends t.Evented{constructor(e){super(),this.remove=()=>(this._content&&wi.remove(this._content),this._container&&(wi.remove(this._container),delete this._container),this._map&&(this._map.off("move",this._update),this._map.off("move",this._onClose),this._map.off("click",this._onClose),this._map.off("remove",this.remove),this._map.off("mousemove",this._onMouseMove),this._map.off("mouseup",this._onMouseUp),this._map.off("drag",this._onDrag),this._map._canvasContainer.classList.remove("maplibregl-track-pointer"),delete this._map,this.fire(new t.Event("close"))),this),this._onMouseUp=e=>{this._update(e.point);},this._onMouseMove=e=>{this._update(e.point);},this._onDrag=e=>{this._update(e.point);},this._update=e=>{var t;if(!this._map||!this._lngLat&&!this._trackPointer||!this._content)return;if(!this._container){if(this._container=wi.create("div","maplibregl-popup",this._map.getContainer()),this._tip=wi.create("div","maplibregl-popup-tip",this._container),this._container.appendChild(this._content),this.options.className)for(const e of this.options.className.split(" "))this._container.classList.add(e);this._closeButton&&this._closeButton.setAttribute("aria-label",this._map._getUIString("Popup.Close")),this._trackPointer&&this._container.classList.add("maplibregl-popup-track-pointer");}if(this.options.maxWidth&&this._container.style.maxWidth!==this.options.maxWidth&&(this._container.style.maxWidth=this.options.maxWidth),this._lngLat=this._map.transform.renderWorldCopies&&!this._trackPointer?ls(this._lngLat,this._flatPos,this._map.transform):null===(t=this._lngLat)||void 0===t?void 0:t.wrap(),this._trackPointer&&!e)return;const i=this._flatPos=this._pos=this._trackPointer&&e?e:this._map.project(this._lngLat);this._map.terrain&&(this._flatPos=this._trackPointer&&e?e:this._map.transform.locationToScreenPoint(this._lngLat));let r=this.options.anchor;const o=xs(this.options.offset);if(!r){const e=this._container.offsetWidth,t=this._container.offsetHeight;let a;a=i.y+o.bottom.ythis._map.transform.height-t?["bottom"]:[],i.xthis._map.transform.width-e/2&&a.push("right"),r=0===a.length?"bottom":a.join("-");}let a=i.add(o[r]);this.options.subpixelPositioning||(a=a.round()),wi.setTransform(this._container,`${cs[r]} translate(${a.x}px,${a.y}px)`),hs(this._container,r,"popup");},this._onClose=()=>{this.remove();},this.options=t.extend(Object.create(vs),e);}addTo(e){return this._map&&this.remove(),this._map=e,this.options.closeOnClick&&this._map.on("click",this._onClose),this.options.closeOnMove&&this._map.on("move",this._onClose),this._map.on("remove",this.remove),this._update(),this._focusFirstElement(),this._trackPointer?(this._map.on("mousemove",this._onMouseMove),this._map.on("mouseup",this._onMouseUp),this._container&&this._container.classList.add("maplibregl-popup-track-pointer"),this._map._canvasContainer.classList.add("maplibregl-track-pointer")):this._map.on("move",this._update),this.fire(new t.Event("open")),this}isOpen(){return !!this._map}getLngLat(){return this._lngLat}setLngLat(e){return this._lngLat=t.LngLat.convert(e),this._pos=null,this._flatPos=null,this._trackPointer=!1,this._update(),this._map&&(this._map.on("move",this._update),this._map.off("mousemove",this._onMouseMove),this._container&&this._container.classList.remove("maplibregl-popup-track-pointer"),this._map._canvasContainer.classList.remove("maplibregl-track-pointer")),this}trackPointer(){return this._trackPointer=!0,this._pos=null,this._flatPos=null,this._update(),this._map&&(this._map.off("move",this._update),this._map.on("mousemove",this._onMouseMove),this._map.on("drag",this._onDrag),this._container&&this._container.classList.add("maplibregl-popup-track-pointer"),this._map._canvasContainer.classList.add("maplibregl-track-pointer")),this}getElement(){return this._container}setText(e){return this.setDOMContent(document.createTextNode(e))}setHTML(e){const t=document.createDocumentFragment(),i=document.createElement("body");let r;for(i.innerHTML=e;r=i.firstChild,r;)t.appendChild(r);return this.setDOMContent(t)}getMaxWidth(){var e;return null===(e=this._container)||void 0===e?void 0:e.style.maxWidth}setMaxWidth(e){return this.options.maxWidth=e,this._update(),this}setDOMContent(e){if(this._content)for(;this._content.hasChildNodes();)this._content.firstChild&&this._content.removeChild(this._content.firstChild);else this._content=wi.create("div","maplibregl-popup-content",this._container);return this._content.appendChild(e),this._createCloseButton(),this._update(),this._focusFirstElement(),this}addClassName(e){return this._container&&this._container.classList.add(e),this}removeClassName(e){return this._container&&this._container.classList.remove(e),this}setOffset(e){return this.options.offset=e,this._update(),this}toggleClassName(e){if(this._container)return this._container.classList.toggle(e)}setSubpixelPositioning(e){this.options.subpixelPositioning=e;}_createCloseButton(){this.options.closeButton&&(this._closeButton=wi.create("button","maplibregl-popup-close-button",this._content),this._closeButton.type="button",this._closeButton.innerHTML="×",this._closeButton.addEventListener("click",this._onClose));}_focusFirstElement(){if(!this.options.focusAfterOpen||!this._container)return;const e=this._container.querySelector(ys);e&&e.focus();}},e.RasterDEMTileSource=$,e.RasterTileSource=X,e.ScaleControl=class{constructor(e){this._onMove=()=>{fs(this._map,this._container,this.options);},this.setUnit=e=>{this.options.unit=e,fs(this._map,this._container,this.options);},this.options=Object.assign(Object.assign({},ms),e);}getDefaultPosition(){return "bottom-left"}onAdd(e){return this._map=e,this._container=wi.create("div","maplibregl-ctrl maplibregl-ctrl-scale",e.getContainer()),this._map.on("move",this._onMove),this._onMove(),this._container}onRemove(){wi.remove(this._container),this._map.off("move",this._onMove),this._map=void 0;}},e.ScrollZoomHandler=_a,e.Style=gi,e.TerrainControl=class{constructor(e){this._toggleTerrain=()=>{this._map.getTerrain()?this._map.setTerrain(null):this._map.setTerrain(this.options),this._updateTerrainIcon();},this._updateTerrainIcon=()=>{this._terrainButton.classList.remove("maplibregl-ctrl-terrain"),this._terrainButton.classList.remove("maplibregl-ctrl-terrain-enabled"),this._map.terrain?(this._terrainButton.classList.add("maplibregl-ctrl-terrain-enabled"),this._terrainButton.title=this._map._getUIString("TerrainControl.Disable")):(this._terrainButton.classList.add("maplibregl-ctrl-terrain"),this._terrainButton.title=this._map._getUIString("TerrainControl.Enable"));},this.options=e;}onAdd(e){return this._map=e,this._container=wi.create("div","maplibregl-ctrl maplibregl-ctrl-group"),this._terrainButton=wi.create("button","maplibregl-ctrl-terrain",this._container),wi.create("span","maplibregl-ctrl-icon",this._terrainButton).setAttribute("aria-hidden","true"),this._terrainButton.type="button",this._terrainButton.addEventListener("click",this._toggleTerrain),this._updateTerrainIcon(),this._map.on("terrain",this._updateTerrainIcon),this._container}onRemove(){wi.remove(this._container),this._map.off("terrain",this._updateTerrainIcon),this._map=void 0;}},e.TwoFingersTouchPitchHandler=la,e.TwoFingersTouchRotateHandler=sa,e.TwoFingersTouchZoomHandler=oa,e.TwoFingersTouchZoomRotateHandler=ya,e.VectorTileSource=W,e.VideoSource=Y,e.addSourceType=(e,i)=>t.__awaiter(void 0,void 0,void 0,(function*(){if(ee(e))throw new Error(`A source type called "${e}" already exists.`);((e,t)=>{Q[e]=t;})(e,i);})),e.clearPrewarmedResources=function(){const e=k;e&&(e.isPreloaded()&&1===e.numActive()?(e.release(z),k=null):console.warn("Could not clear WebWorkers since there are active Map instances that still reference it. The pre-warmed WebWorker pool can only be cleared when all map instances have been removed with map.remove()"));},e.createTileMesh=Kt,e.getMaxParallelImageRequests=function(){return t.config.MAX_PARALLEL_IMAGE_REQUESTS},e.getRTLTextPluginStatus=function(){return oe().getRTLTextPluginStatus()},e.getVersion=function(){return bs},e.getWorkerCount=function(){return L.workerCount},e.getWorkerUrl=function(){return t.config.WORKER_URL},e.importScriptInWorkers=function(e){return U().broadcast("IS",e)},e.prewarm=function(){B().acquire(z);},e.setMaxParallelImageRequests=function(e){t.config.MAX_PARALLEL_IMAGE_REQUESTS=e;},e.setRTLTextPlugin=function(e,t){return oe().setRTLTextPlugin(e,t)},e.setWorkerCount=function(e){L.workerCount=e;},e.setWorkerUrl=function(e){t.config.WORKER_URL=e;};})); })); //# sourceMappingURL=benchmarks_generated.js.map diff --git a/benchmarks/main/benchmarks_generated.js.map b/benchmarks/main/benchmarks_generated.js.map index 001f28ee33..532c70dad6 100644 --- a/benchmarks/main/benchmarks_generated.js.map +++ b/benchmarks/main/benchmarks_generated.js.map @@ -1 +1 @@ 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IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,\r\nINDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM\r\nLOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR\r\nOTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR\r\nPERFORMANCE OF THIS SOFTWARE.\r\n***************************************************************************** */\r\n/* global Reflect, Promise, SuppressedError, Symbol, Iterator */\r\n\r\nvar extendStatics = function(d, b) {\r\n extendStatics = Object.setPrototypeOf ||\r\n ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\r\n function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };\r\n return extendStatics(d, b);\r\n};\r\n\r\nexport function __extends(d, b) {\r\n if (typeof b !== \"function\" && b !== null)\r\n throw new TypeError(\"Class extends value \" + String(b) + \" is not a constructor or null\");\r\n extendStatics(d, b);\r\n function __() { this.constructor = d; }\r\n d.prototype = b === null ? 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Object.getOwnPropertyDescriptor(target, contextIn.name) : {});\r\n var _, done = false;\r\n for (var i = decorators.length - 1; i >= 0; i--) {\r\n var context = {};\r\n for (var p in contextIn) context[p] = p === \"access\" ? {} : contextIn[p];\r\n for (var p in contextIn.access) context.access[p] = contextIn.access[p];\r\n context.addInitializer = function (f) { if (done) throw new TypeError(\"Cannot add initializers after decoration has completed\"); extraInitializers.push(accept(f || null)); };\r\n var result = (0, decorators[i])(kind === \"accessor\" ? { get: descriptor.get, set: descriptor.set } : descriptor[key], context);\r\n if (kind === \"accessor\") {\r\n if (result === void 0) continue;\r\n if (result === null || typeof result !== \"object\") throw new TypeError(\"Object expected\");\r\n if (_ = accept(result.get)) descriptor.get = _;\r\n if (_ = accept(result.set)) descriptor.set = _;\r\n if (_ = accept(result.init)) initializers.unshift(_);\r\n }\r\n else if (_ = accept(result)) {\r\n if (kind === \"field\") initializers.unshift(_);\r\n else descriptor[key] = _;\r\n }\r\n }\r\n if (target) Object.defineProperty(target, contextIn.name, descriptor);\r\n done = true;\r\n};\r\n\r\nexport function __runInitializers(thisArg, initializers, value) {\r\n var useValue = arguments.length > 2;\r\n for (var i = 0; i < initializers.length; i++) {\r\n value = useValue ? initializers[i].call(thisArg, value) : initializers[i].call(thisArg);\r\n }\r\n return useValue ? value : void 0;\r\n};\r\n\r\nexport function __propKey(x) {\r\n return typeof x === \"symbol\" ? x : \"\".concat(x);\r\n};\r\n\r\nexport function __setFunctionName(f, name, prefix) {\r\n if (typeof name === \"symbol\") name = name.description ? \"[\".concat(name.description, \"]\") : \"\";\r\n return Object.defineProperty(f, \"name\", { configurable: true, value: prefix ? \"\".concat(prefix, \" \", name) : name });\r\n};\r\n\r\nexport function __metadata(metadataKey, metadataValue) {\r\n if (typeof Reflect === \"object\" && typeof Reflect.metadata === \"function\") return Reflect.metadata(metadataKey, metadataValue);\r\n}\r\n\r\nexport function __awaiter(thisArg, _arguments, P, generator) {\r\n function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }\r\n return new (P || (P = Promise))(function (resolve, reject) {\r\n function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }\r\n function rejected(value) { try { step(generator[\"throw\"](value)); } catch (e) { reject(e); } }\r\n function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }\r\n step((generator = generator.apply(thisArg, _arguments || [])).next());\r\n });\r\n}\r\n\r\nexport function __generator(thisArg, body) {\r\n var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g = Object.create((typeof Iterator === \"function\" ? Iterator : Object).prototype);\r\n return g.next = verb(0), g[\"throw\"] = verb(1), g[\"return\"] = verb(2), typeof Symbol === \"function\" && (g[Symbol.iterator] = function() { return this; }), g;\r\n function verb(n) { return function (v) { return step([n, v]); }; }\r\n function step(op) {\r\n if (f) throw new TypeError(\"Generator is already executing.\");\r\n while (g && (g = 0, op[0] && (_ = 0)), _) try {\r\n if (f = 1, y && (t = op[0] & 2 ? y[\"return\"] : op[0] ? y[\"throw\"] || ((t = y[\"return\"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;\r\n if (y = 0, t) op = [op[0] & 2, t.value];\r\n switch (op[0]) {\r\n case 0: case 1: t = op; break;\r\n case 4: _.label++; return { value: op[1], done: false };\r\n case 5: _.label++; y = op[1]; op = [0]; continue;\r\n case 7: op = _.ops.pop(); _.trys.pop(); continue;\r\n default:\r\n if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }\r\n if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }\r\n if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }\r\n if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }\r\n if (t[2]) _.ops.pop();\r\n _.trys.pop(); continue;\r\n }\r\n op = body.call(thisArg, _);\r\n } catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }\r\n if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };\r\n }\r\n}\r\n\r\nexport var __createBinding = Object.create ? (function(o, m, k, k2) {\r\n if (k2 === undefined) k2 = k;\r\n var desc = Object.getOwnPropertyDescriptor(m, k);\r\n if (!desc || (\"get\" in desc ? !m.__esModule : desc.writable || desc.configurable)) {\r\n desc = { enumerable: true, get: function() { return m[k]; } };\r\n }\r\n Object.defineProperty(o, k2, desc);\r\n}) : (function(o, m, k, k2) {\r\n if (k2 === undefined) k2 = k;\r\n o[k2] = m[k];\r\n});\r\n\r\nexport function __exportStar(m, o) {\r\n for (var p in m) if (p !== \"default\" && !Object.prototype.hasOwnProperty.call(o, p)) __createBinding(o, m, p);\r\n}\r\n\r\nexport function __values(o) {\r\n var s = typeof Symbol === \"function\" && Symbol.iterator, m = s && o[s], i = 0;\r\n if (m) return m.call(o);\r\n if (o && typeof o.length === \"number\") return {\r\n next: function () {\r\n if (o && i >= o.length) o = void 0;\r\n return { value: o && o[i++], done: !o };\r\n }\r\n };\r\n throw new TypeError(s ? \"Object is not iterable.\" : \"Symbol.iterator is not defined.\");\r\n}\r\n\r\nexport function __read(o, n) {\r\n var m = typeof Symbol === \"function\" && o[Symbol.iterator];\r\n if (!m) return o;\r\n var i = m.call(o), r, ar = [], e;\r\n try {\r\n while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);\r\n }\r\n catch (error) { e = { error: error }; }\r\n finally {\r\n try {\r\n if (r && !r.done && (m = i[\"return\"])) m.call(i);\r\n }\r\n finally { if (e) throw e.error; }\r\n }\r\n return ar;\r\n}\r\n\r\n/** @deprecated */\r\nexport function __spread() {\r\n for (var ar = [], i = 0; i < arguments.length; i++)\r\n ar = ar.concat(__read(arguments[i]));\r\n return ar;\r\n}\r\n\r\n/** @deprecated */\r\nexport function __spreadArrays() {\r\n for (var s = 0, i = 0, il = arguments.length; i < il; i++) s += arguments[i].length;\r\n for (var r = Array(s), k = 0, i = 0; i < il; i++)\r\n for (var a = arguments[i], j = 0, jl = a.length; j < jl; j++, k++)\r\n r[k] = a[j];\r\n return r;\r\n}\r\n\r\nexport function __spreadArray(to, from, pack) {\r\n if (pack || arguments.length === 2) for (var i = 0, l = from.length, ar; i < l; i++) {\r\n if (ar || !(i in from)) {\r\n if (!ar) ar = Array.prototype.slice.call(from, 0, i);\r\n ar[i] = from[i];\r\n }\r\n }\r\n return to.concat(ar || Array.prototype.slice.call(from));\r\n}\r\n\r\nexport function __await(v) {\r\n return this instanceof __await ? (this.v = v, this) : new __await(v);\r\n}\r\n\r\nexport function __asyncGenerator(thisArg, _arguments, generator) {\r\n if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\r\n var g = generator.apply(thisArg, _arguments || []), i, q = [];\r\n return i = Object.create((typeof AsyncIterator === \"function\" ? AsyncIterator : Object).prototype), verb(\"next\"), verb(\"throw\"), verb(\"return\", awaitReturn), i[Symbol.asyncIterator] = function () { return this; }, i;\r\n function awaitReturn(f) { return function (v) { return Promise.resolve(v).then(f, reject); }; }\r\n function verb(n, f) { if (g[n]) { i[n] = function (v) { return new Promise(function (a, b) { q.push([n, v, a, b]) > 1 || resume(n, v); }); }; if (f) i[n] = f(i[n]); } }\r\n function resume(n, v) { try { step(g[n](v)); } catch (e) { settle(q[0][3], e); } }\r\n function step(r) { r.value instanceof __await ? Promise.resolve(r.value.v).then(fulfill, reject) : settle(q[0][2], r); }\r\n function fulfill(value) { resume(\"next\", value); }\r\n function reject(value) { resume(\"throw\", value); }\r\n function settle(f, v) { if (f(v), q.shift(), q.length) resume(q[0][0], q[0][1]); }\r\n}\r\n\r\nexport function __asyncDelegator(o) {\r\n var i, p;\r\n return i = {}, verb(\"next\"), verb(\"throw\", function (e) { throw e; }), verb(\"return\"), i[Symbol.iterator] = function () { return this; }, i;\r\n function verb(n, f) { i[n] = o[n] ? function (v) { return (p = !p) ? { value: __await(o[n](v)), done: false } : f ? f(v) : v; } : f; }\r\n}\r\n\r\nexport function __asyncValues(o) {\r\n if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\r\n var m = o[Symbol.asyncIterator], i;\r\n return m ? m.call(o) : (o = typeof __values === \"function\" ? __values(o) : o[Symbol.iterator](), i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () { return this; }, i);\r\n function verb(n) { i[n] = o[n] && function (v) { return new Promise(function (resolve, reject) { v = o[n](v), settle(resolve, reject, v.done, v.value); }); }; }\r\n function settle(resolve, reject, d, v) { Promise.resolve(v).then(function(v) { resolve({ value: v, done: d }); }, reject); }\r\n}\r\n\r\nexport function __makeTemplateObject(cooked, raw) {\r\n if (Object.defineProperty) { Object.defineProperty(cooked, \"raw\", { value: raw }); } else { cooked.raw = raw; }\r\n return cooked;\r\n};\r\n\r\nvar __setModuleDefault = Object.create ? (function(o, v) {\r\n Object.defineProperty(o, \"default\", { enumerable: true, value: v });\r\n}) : function(o, v) {\r\n o[\"default\"] = v;\r\n};\r\n\r\nvar ownKeys = function(o) {\r\n ownKeys = Object.getOwnPropertyNames || function (o) {\r\n var ar = [];\r\n for (var k in o) if (Object.prototype.hasOwnProperty.call(o, k)) ar[ar.length] = k;\r\n return ar;\r\n };\r\n return ownKeys(o);\r\n};\r\n\r\nexport function __importStar(mod) {\r\n if (mod && mod.__esModule) return mod;\r\n var result = {};\r\n if (mod != null) for (var k = ownKeys(mod), i = 0; i < k.length; i++) if (k[i] !== \"default\") __createBinding(result, mod, k[i]);\r\n __setModuleDefault(result, mod);\r\n return result;\r\n}\r\n\r\nexport function __importDefault(mod) {\r\n return (mod && mod.__esModule) ? mod : { default: mod };\r\n}\r\n\r\nexport function __classPrivateFieldGet(receiver, state, kind, f) {\r\n if (kind === \"a\" && !f) throw new TypeError(\"Private accessor was defined without a getter\");\r\n if (typeof state === \"function\" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError(\"Cannot read private member from an object whose class did not declare it\");\r\n return kind === \"m\" ? f : kind === \"a\" ? f.call(receiver) : f ? f.value : state.get(receiver);\r\n}\r\n\r\nexport function __classPrivateFieldSet(receiver, state, value, kind, f) {\r\n if (kind === \"m\") throw new TypeError(\"Private method is not writable\");\r\n if (kind === \"a\" && !f) throw new TypeError(\"Private accessor was defined without a setter\");\r\n if (typeof state === \"function\" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError(\"Cannot write private member to an object whose class did not declare it\");\r\n return (kind === \"a\" ? f.call(receiver, value) : f ? f.value = value : state.set(receiver, value)), value;\r\n}\r\n\r\nexport function __classPrivateFieldIn(state, receiver) {\r\n if (receiver === null || (typeof receiver !== \"object\" && typeof receiver !== \"function\")) throw new TypeError(\"Cannot use 'in' operator on non-object\");\r\n return typeof state === \"function\" ? receiver === state : state.has(receiver);\r\n}\r\n\r\nexport function __addDisposableResource(env, value, async) {\r\n if (value !== null && value !== void 0) {\r\n if (typeof value !== \"object\" && typeof value !== \"function\") throw new TypeError(\"Object expected.\");\r\n var dispose, inner;\r\n if (async) {\r\n if (!Symbol.asyncDispose) throw new TypeError(\"Symbol.asyncDispose is not defined.\");\r\n dispose = value[Symbol.asyncDispose];\r\n }\r\n if (dispose === void 0) {\r\n if (!Symbol.dispose) throw new TypeError(\"Symbol.dispose is not defined.\");\r\n dispose = value[Symbol.dispose];\r\n if (async) inner = dispose;\r\n }\r\n if (typeof dispose !== \"function\") throw new TypeError(\"Object not disposable.\");\r\n if (inner) dispose = function() { try { inner.call(this); } catch (e) { return Promise.reject(e); } };\r\n env.stack.push({ value: value, dispose: dispose, async: async });\r\n }\r\n else if (async) {\r\n env.stack.push({ async: true });\r\n }\r\n return value;\r\n\r\n}\r\n\r\nvar _SuppressedError = typeof SuppressedError === \"function\" ? SuppressedError : function (error, suppressed, message) {\r\n var e = new Error(message);\r\n return e.name = \"SuppressedError\", e.error = error, e.suppressed = suppressed, e;\r\n};\r\n\r\nexport function __disposeResources(env) {\r\n function fail(e) {\r\n env.error = env.hasError ? new _SuppressedError(e, env.error, \"An error was suppressed during disposal.\") : e;\r\n env.hasError = true;\r\n }\r\n var r, s = 0;\r\n function next() {\r\n while (r = env.stack.pop()) {\r\n try {\r\n if (!r.async && s === 1) return s = 0, env.stack.push(r), Promise.resolve().then(next);\r\n if (r.dispose) {\r\n var result = r.dispose.call(r.value);\r\n if (r.async) return s |= 2, Promise.resolve(result).then(next, function(e) { fail(e); return next(); });\r\n }\r\n else s |= 1;\r\n }\r\n catch (e) {\r\n fail(e);\r\n }\r\n }\r\n if (s === 1) return env.hasError ? Promise.reject(env.error) : Promise.resolve();\r\n if (env.hasError) throw env.error;\r\n }\r\n return next();\r\n}\r\n\r\nexport function __rewriteRelativeImportExtension(path, preserveJsx) {\r\n if (typeof path === \"string\" && /^\\.\\.?\\//.test(path)) {\r\n return path.replace(/\\.(tsx)$|((?:\\.d)?)((?:\\.[^./]+?)?)\\.([cm]?)ts$/i, function (m, tsx, d, ext, cm) {\r\n return tsx ? preserveJsx ? \".jsx\" : \".js\" : d && (!ext || !cm) ? m : (d + ext + \".\" + cm.toLowerCase() + \"js\");\r\n });\r\n }\r\n return path;\r\n}\r\n\r\nexport default {\r\n __extends: __extends,\r\n __assign: __assign,\r\n __rest: __rest,\r\n __decorate: __decorate,\r\n __param: __param,\r\n __esDecorate: __esDecorate,\r\n __runInitializers: __runInitializers,\r\n __propKey: __propKey,\r\n __setFunctionName: __setFunctionName,\r\n __metadata: __metadata,\r\n __awaiter: __awaiter,\r\n __generator: __generator,\r\n __createBinding: __createBinding,\r\n __exportStar: __exportStar,\r\n __values: __values,\r\n __read: __read,\r\n __spread: __spread,\r\n __spreadArrays: __spreadArrays,\r\n __spreadArray: __spreadArray,\r\n __await: __await,\r\n __asyncGenerator: __asyncGenerator,\r\n __asyncDelegator: __asyncDelegator,\r\n __asyncValues: __asyncValues,\r\n __makeTemplateObject: __makeTemplateObject,\r\n __importStar: __importStar,\r\n __importDefault: __importDefault,\r\n __classPrivateFieldGet: __classPrivateFieldGet,\r\n __classPrivateFieldSet: __classPrivateFieldSet,\r\n __classPrivateFieldIn: __classPrivateFieldIn,\r\n __addDisposableResource: __addDisposableResource,\r\n __disposeResources: __disposeResources,\r\n __rewriteRelativeImportExtension: __rewriteRelativeImportExtension,\r\n};\r\n","'use strict';\n\nmodule.exports = Point;\n\n/**\n * A standalone point geometry with useful accessor, comparison, and\n * modification methods.\n *\n * @class Point\n * @param {Number} x the x-coordinate. this could be longitude or screen\n * pixels, or any other sort of unit.\n * @param {Number} y the y-coordinate. this could be latitude or screen\n * pixels, or any other sort of unit.\n * @example\n * var point = new Point(-77, 38);\n */\nfunction Point(x, y) {\n this.x = x;\n this.y = y;\n}\n\nPoint.prototype = {\n\n /**\n * Clone this point, returning a new point that can be modified\n * without affecting the old one.\n * @return {Point} the clone\n */\n clone: function() { return new Point(this.x, this.y); },\n\n /**\n * Add this point's x & y coordinates to another point,\n * yielding a new point.\n * @param {Point} p the other point\n * @return {Point} output point\n */\n add: function(p) { return this.clone()._add(p); },\n\n /**\n * Subtract this point's x & y coordinates to from point,\n * yielding a new point.\n * @param {Point} p the other point\n * @return {Point} output point\n */\n sub: function(p) { return this.clone()._sub(p); },\n\n /**\n * Multiply this point's x & y coordinates by point,\n * yielding a new point.\n * @param {Point} p the other point\n * @return {Point} output point\n */\n multByPoint: function(p) { return this.clone()._multByPoint(p); },\n\n /**\n * Divide this point's x & y coordinates by point,\n * yielding a new point.\n * @param {Point} p the other point\n * @return {Point} output point\n */\n divByPoint: function(p) { return this.clone()._divByPoint(p); },\n\n /**\n * Multiply this point's x & y coordinates by a factor,\n * yielding a new point.\n * @param {Point} k factor\n * @return {Point} output point\n */\n mult: function(k) { return this.clone()._mult(k); },\n\n /**\n * Divide this point's x & y coordinates by a factor,\n * yielding a new point.\n * @param {Point} k factor\n * @return {Point} output point\n */\n div: function(k) { return this.clone()._div(k); },\n\n /**\n * Rotate this point around the 0, 0 origin by an angle a,\n * given in radians\n * @param {Number} a angle to rotate around, in radians\n * @return {Point} output point\n */\n rotate: function(a) { return this.clone()._rotate(a); },\n\n /**\n * Rotate this point around p point by an angle a,\n * given in radians\n * @param {Number} a angle to rotate around, in radians\n * @param {Point} p Point to rotate around\n * @return {Point} output point\n */\n rotateAround: function(a,p) { return this.clone()._rotateAround(a,p); },\n\n /**\n * Multiply this point by a 4x1 transformation matrix\n * @param {Array} m transformation matrix\n * @return {Point} output point\n */\n matMult: function(m) { return this.clone()._matMult(m); },\n\n /**\n * Calculate this point but as a unit vector from 0, 0, meaning\n * that the distance from the resulting point to the 0, 0\n * coordinate will be equal to 1 and the angle from the resulting\n * point to the 0, 0 coordinate will be the same as before.\n * @return {Point} unit vector point\n */\n unit: function() { return this.clone()._unit(); },\n\n /**\n * Compute a perpendicular point, where the new y coordinate\n * is the old x coordinate and the new x coordinate is the old y\n * coordinate multiplied by -1\n * @return {Point} perpendicular point\n */\n perp: function() { return this.clone()._perp(); },\n\n /**\n * Return a version of this point with the x & y coordinates\n * rounded to integers.\n * @return {Point} rounded point\n */\n round: function() { return this.clone()._round(); },\n\n /**\n * Return the magitude of this point: this is the Euclidean\n * distance from the 0, 0 coordinate to this point's x and y\n * coordinates.\n * @return {Number} magnitude\n */\n mag: function() {\n return Math.sqrt(this.x * this.x + this.y * this.y);\n },\n\n /**\n * Judge whether this point is equal to another point, returning\n * true or false.\n * @param {Point} other the other point\n * @return {boolean} whether the points are equal\n */\n equals: function(other) {\n return this.x === other.x &&\n this.y === other.y;\n },\n\n /**\n * Calculate the distance from this point to another point\n * @param {Point} p the other point\n * @return {Number} distance\n */\n dist: function(p) {\n return Math.sqrt(this.distSqr(p));\n },\n\n /**\n * Calculate the distance from this point to another point,\n * without the square root step. Useful if you're comparing\n * relative distances.\n * @param {Point} p the other point\n * @return {Number} distance\n */\n distSqr: function(p) {\n var dx = p.x - this.x,\n dy = p.y - this.y;\n return dx * dx + dy * dy;\n },\n\n /**\n * Get the angle from the 0, 0 coordinate to this point, in radians\n * coordinates.\n * @return {Number} angle\n */\n angle: function() {\n return Math.atan2(this.y, this.x);\n },\n\n /**\n * Get the angle from this point to another point, in radians\n * @param {Point} b the other point\n * @return {Number} angle\n */\n angleTo: function(b) {\n return Math.atan2(this.y - b.y, this.x - b.x);\n },\n\n /**\n * Get the angle between this point and another point, in radians\n * @param {Point} b the other point\n * @return {Number} angle\n */\n angleWith: function(b) {\n return this.angleWithSep(b.x, b.y);\n },\n\n /*\n * Find the angle of the two vectors, solving the formula for\n * the cross product a x b = |a||b|sin(θ) for θ.\n * @param {Number} x the x-coordinate\n * @param {Number} y the y-coordinate\n * @return {Number} the angle in radians\n */\n angleWithSep: function(x, y) {\n return Math.atan2(\n this.x * y - this.y * x,\n this.x * x + this.y * y);\n },\n\n _matMult: function(m) {\n var x = m[0] * this.x + m[1] * this.y,\n y = m[2] * this.x + m[3] * this.y;\n this.x = x;\n this.y = y;\n return this;\n },\n\n _add: function(p) {\n this.x += p.x;\n this.y += p.y;\n return this;\n },\n\n _sub: function(p) {\n this.x -= p.x;\n this.y -= p.y;\n return this;\n },\n\n _mult: function(k) {\n this.x *= k;\n this.y *= k;\n return this;\n },\n\n _div: function(k) {\n this.x /= k;\n this.y /= k;\n return this;\n },\n\n _multByPoint: function(p) {\n this.x *= p.x;\n this.y *= p.y;\n return this;\n },\n\n _divByPoint: function(p) {\n this.x /= p.x;\n this.y /= p.y;\n return this;\n },\n\n _unit: function() {\n this._div(this.mag());\n return this;\n },\n\n _perp: function() {\n var y = this.y;\n this.y = this.x;\n this.x = -y;\n return this;\n },\n\n _rotate: function(angle) {\n var cos = Math.cos(angle),\n sin = Math.sin(angle),\n x = cos * this.x - sin * this.y,\n y = sin * this.x + cos * this.y;\n this.x = x;\n this.y = y;\n return this;\n },\n\n _rotateAround: function(angle, p) {\n var cos = Math.cos(angle),\n sin = Math.sin(angle),\n x = p.x + cos * (this.x - p.x) - sin * (this.y - p.y),\n y = p.y + sin * (this.x - p.x) + cos * (this.y - p.y);\n this.x = x;\n this.y = y;\n return this;\n },\n\n _round: function() {\n this.x = Math.round(this.x);\n this.y = Math.round(this.y);\n return this;\n }\n};\n\n/**\n * Construct a point from an array if necessary, otherwise if the input\n * is already a Point, or an unknown type, return it unchanged\n * @param {Array|Point|*} a any kind of input value\n * @return {Point} constructed point, or passed-through value.\n * @example\n * // this\n * var point = Point.convert([0, 1]);\n * // is equivalent to\n * var point = new Point(0, 1);\n */\nPoint.convert = function (a) {\n if (a instanceof Point) {\n return a;\n }\n if (Array.isArray(a)) {\n return new Point(a[0], a[1]);\n }\n return a;\n};\n","'use strict';\n\nmodule.exports = UnitBezier;\n\nfunction UnitBezier(p1x, p1y, p2x, p2y) {\n // Calculate the polynomial coefficients, implicit first and last control points are (0,0) and (1,1).\n this.cx = 3.0 * p1x;\n this.bx = 3.0 * (p2x - p1x) - this.cx;\n this.ax = 1.0 - this.cx - this.bx;\n\n this.cy = 3.0 * p1y;\n this.by = 3.0 * (p2y - p1y) - this.cy;\n this.ay = 1.0 - this.cy - this.by;\n\n this.p1x = p1x;\n this.p1y = p1y;\n this.p2x = p2x;\n this.p2y = p2y;\n}\n\nUnitBezier.prototype = {\n sampleCurveX: function (t) {\n // `ax t^3 + bx t^2 + cx t' expanded using Horner's rule.\n return ((this.ax * t + this.bx) * t + this.cx) * t;\n },\n\n sampleCurveY: function (t) {\n return ((this.ay * t + this.by) * t + this.cy) * t;\n },\n\n sampleCurveDerivativeX: function (t) {\n return (3.0 * this.ax * t + 2.0 * this.bx) * t + this.cx;\n },\n\n solveCurveX: function (x, epsilon) {\n if (epsilon === undefined) epsilon = 1e-6;\n\n if (x < 0.0) return 0.0;\n if (x > 1.0) return 1.0;\n\n var t = x;\n\n // First try a few iterations of Newton's method - normally very fast.\n for (var i = 0; i < 8; i++) {\n var x2 = this.sampleCurveX(t) - x;\n if (Math.abs(x2) < epsilon) return t;\n\n var d2 = this.sampleCurveDerivativeX(t);\n if (Math.abs(d2) < 1e-6) break;\n\n t = t - x2 / d2;\n }\n\n // Fall back to the bisection method for reliability.\n var t0 = 0.0;\n var t1 = 1.0;\n t = x;\n\n for (i = 0; i < 20; i++) {\n x2 = this.sampleCurveX(t);\n if (Math.abs(x2 - x) < epsilon) break;\n\n if (x > x2) {\n t0 = t;\n } else {\n t1 = t;\n }\n\n t = (t1 - t0) * 0.5 + t0;\n }\n\n return t;\n },\n\n solve: function (x, epsilon) {\n return this.sampleCurveY(this.solveCurveX(x, epsilon));\n }\n};\n","let supportsOffscreenCanvas: boolean;\n\nexport function offscreenCanvasSupported(): boolean {\n if (supportsOffscreenCanvas == null) {\n supportsOffscreenCanvas = typeof OffscreenCanvas !== 'undefined' &&\n new OffscreenCanvas(1, 1).getContext('2d') &&\n typeof createImageBitmap === 'function';\n }\n\n return supportsOffscreenCanvas;\n}\n","import {offscreenCanvasSupported} from './offscreen_canvas_supported';\n\nlet offscreenCanvasDistorted: boolean;\n\n/**\n * Some browsers don't return the exact pixels from a canvas to prevent user fingerprinting (see #3185).\n * This function writes pixels to an OffscreenCanvas and reads them back using getImageData, returning false\n * if they don't match.\n *\n * @returns true if the browser supports OffscreenCanvas but it distorts getImageData results, false otherwise.\n */\nexport function isOffscreenCanvasDistorted(): boolean {\n if (offscreenCanvasDistorted == null) {\n offscreenCanvasDistorted = false;\n if (offscreenCanvasSupported()) {\n const size = 5;\n const canvas = new OffscreenCanvas(size, size);\n const context = canvas.getContext('2d', {willReadFrequently: true});\n if (context) {\n // fill each pixel with an RGB value that should make the byte at index i equal to i (except alpha channel):\n // [0, 1, 2, 255, 4, 5, 6, 255, 8, 9, 10, 255, ...]\n for (let i = 0; i < size * size; i++) {\n const base = i * 4;\n context.fillStyle = `rgb(${base},${base + 1},${base + 2})`;\n context.fillRect(i % size, Math.floor(i / size), 1, 1);\n }\n const data = context.getImageData(0, 0, size, size).data;\n for (let i = 0; i < size * size * 4; i++) {\n if (i % 4 !== 3 && data[i] !== i) {\n offscreenCanvasDistorted = true;\n break;\n }\n }\n }\n }\n }\n\n return offscreenCanvasDistorted || false;\n}\n","/**\n * Common utilities\n * @module glMatrix\n */\n// Configuration Constants\nexport var EPSILON = 0.000001;\nexport var ARRAY_TYPE = typeof Float32Array !== 'undefined' ? Float32Array : Array;\nexport var RANDOM = Math.random;\n/**\n * Sets the type of array used when creating new vectors and matrices\n *\n * @param {Float32ArrayConstructor | ArrayConstructor} type Array type, such as Float32Array or Array\n */\n\nexport function setMatrixArrayType(type) {\n ARRAY_TYPE = type;\n}\nvar degree = Math.PI / 180;\n/**\n * Convert Degree To Radian\n *\n * @param {Number} a Angle in Degrees\n */\n\nexport function toRadian(a) {\n return a * degree;\n}\n/**\n * Tests whether or not the arguments have approximately the same value, within an absolute\n * or relative tolerance of glMatrix.EPSILON (an absolute tolerance is used for values less\n * than or equal to 1.0, and a relative tolerance is used for larger values)\n *\n * @param {Number} a The first number to test.\n * @param {Number} b The second number to test.\n * @returns {Boolean} True if the numbers are approximately equal, false otherwise.\n */\n\nexport function equals(a, b) {\n return Math.abs(a - b) <= EPSILON * Math.max(1.0, Math.abs(a), Math.abs(b));\n}\nif (!Math.hypot) Math.hypot = function () {\n var y = 0,\n i = arguments.length;\n\n while (i--) {\n y += arguments[i] * arguments[i];\n }\n\n return Math.sqrt(y);\n};","import * as glMatrix from \"./common.js\";\n/**\n * 4 Dimensional Vector\n * @module vec4\n */\n\n/**\n * Creates a new, empty vec4\n *\n * @returns {vec4} a new 4D vector\n */\n\nexport function create() {\n var out = new glMatrix.ARRAY_TYPE(4);\n\n if (glMatrix.ARRAY_TYPE != Float32Array) {\n out[0] = 0;\n out[1] = 0;\n out[2] = 0;\n out[3] = 0;\n }\n\n return out;\n}\n/**\n * Creates a new vec4 initialized with values from an existing vector\n *\n * @param {ReadonlyVec4} a vector to clone\n * @returns {vec4} a new 4D vector\n */\n\nexport function clone(a) {\n var out = new glMatrix.ARRAY_TYPE(4);\n out[0] = a[0];\n out[1] = a[1];\n out[2] = a[2];\n out[3] = a[3];\n return out;\n}\n/**\n * Creates a new vec4 initialized with the given values\n *\n * @param {Number} x X component\n * @param {Number} y Y component\n * @param {Number} z Z component\n * @param {Number} w W component\n * @returns {vec4} a new 4D vector\n */\n\nexport function fromValues(x, y, z, w) {\n var out = new glMatrix.ARRAY_TYPE(4);\n out[0] = x;\n out[1] = y;\n out[2] = z;\n out[3] = w;\n return out;\n}\n/**\n * Copy the values from one vec4 to another\n *\n * @param {vec4} out the receiving vector\n * @param {ReadonlyVec4} a the source vector\n * @returns {vec4} out\n */\n\nexport function copy(out, a) {\n out[0] = a[0];\n out[1] = a[1];\n out[2] = a[2];\n out[3] = a[3];\n return out;\n}\n/**\n * Set the components of a vec4 to the given values\n *\n * @param {vec4} out the receiving vector\n * @param {Number} x X component\n * @param {Number} y Y component\n * @param {Number} z Z component\n * @param {Number} w W component\n * @returns {vec4} out\n */\n\nexport function set(out, x, y, z, w) {\n out[0] = x;\n out[1] = y;\n out[2] = z;\n out[3] = w;\n return out;\n}\n/**\n * Adds two vec4's\n *\n * @param {vec4} out the receiving vector\n * @param {ReadonlyVec4} a the first operand\n * @param {ReadonlyVec4} b the second operand\n * @returns {vec4} out\n */\n\nexport function add(out, a, b) {\n out[0] = a[0] + b[0];\n out[1] = a[1] + b[1];\n out[2] = a[2] + b[2];\n out[3] = a[3] + b[3];\n return out;\n}\n/**\n * Subtracts vector b from vector a\n *\n * @param {vec4} out the receiving vector\n * @param {ReadonlyVec4} a the first operand\n * @param {ReadonlyVec4} b the second operand\n * @returns {vec4} out\n */\n\nexport function subtract(out, a, b) {\n out[0] = a[0] - b[0];\n out[1] = a[1] - b[1];\n out[2] = a[2] - b[2];\n out[3] = a[3] - b[3];\n return out;\n}\n/**\n * Multiplies two vec4's\n *\n * @param {vec4} out the receiving vector\n * @param {ReadonlyVec4} a the first operand\n * @param {ReadonlyVec4} b the second operand\n * @returns {vec4} out\n */\n\nexport function multiply(out, a, b) {\n out[0] = a[0] * b[0];\n out[1] = a[1] * b[1];\n out[2] = a[2] * b[2];\n out[3] = a[3] * b[3];\n return out;\n}\n/**\n * Divides two vec4's\n *\n * @param {vec4} out the receiving vector\n * @param {ReadonlyVec4} a the first operand\n * @param {ReadonlyVec4} b the second operand\n * @returns {vec4} out\n */\n\nexport function divide(out, a, b) {\n out[0] = a[0] / b[0];\n out[1] = a[1] / b[1];\n out[2] = a[2] / b[2];\n out[3] = a[3] / b[3];\n return out;\n}\n/**\n * Math.ceil the components of a vec4\n *\n * @param {vec4} out the receiving vector\n * @param {ReadonlyVec4} a vector to ceil\n * @returns {vec4} out\n */\n\nexport function ceil(out, a) {\n out[0] = Math.ceil(a[0]);\n out[1] = Math.ceil(a[1]);\n out[2] = Math.ceil(a[2]);\n out[3] = Math.ceil(a[3]);\n return out;\n}\n/**\n * Math.floor the components of a vec4\n *\n * @param {vec4} out the receiving vector\n * @param {ReadonlyVec4} a vector to floor\n * @returns {vec4} out\n */\n\nexport function floor(out, a) {\n out[0] = Math.floor(a[0]);\n out[1] = Math.floor(a[1]);\n out[2] = Math.floor(a[2]);\n out[3] = Math.floor(a[3]);\n return out;\n}\n/**\n * Returns the minimum of two vec4's\n *\n * @param {vec4} out the receiving vector\n * @param {ReadonlyVec4} a the first operand\n * @param {ReadonlyVec4} b the second operand\n * @returns {vec4} out\n */\n\nexport function min(out, a, b) {\n out[0] = Math.min(a[0], b[0]);\n out[1] = Math.min(a[1], b[1]);\n out[2] = Math.min(a[2], b[2]);\n out[3] = Math.min(a[3], b[3]);\n return out;\n}\n/**\n * Returns the maximum of two vec4's\n *\n * @param {vec4} out the receiving vector\n * @param {ReadonlyVec4} a the first operand\n * @param {ReadonlyVec4} b the second operand\n * @returns {vec4} out\n */\n\nexport function max(out, a, b) {\n out[0] = Math.max(a[0], b[0]);\n out[1] = Math.max(a[1], b[1]);\n out[2] = Math.max(a[2], b[2]);\n out[3] = Math.max(a[3], b[3]);\n return out;\n}\n/**\n * Math.round the components of a vec4\n *\n * @param {vec4} out the receiving vector\n * @param {ReadonlyVec4} a vector to round\n * @returns {vec4} out\n */\n\nexport function round(out, a) {\n out[0] = Math.round(a[0]);\n out[1] = Math.round(a[1]);\n out[2] = Math.round(a[2]);\n out[3] = Math.round(a[3]);\n return out;\n}\n/**\n * Scales a vec4 by a scalar number\n *\n * @param {vec4} out the receiving vector\n * @param {ReadonlyVec4} a the vector to scale\n * @param {Number} b amount to scale the vector by\n * @returns {vec4} out\n */\n\nexport function scale(out, a, b) {\n out[0] = a[0] * b;\n out[1] = a[1] * b;\n out[2] = a[2] * b;\n out[3] = a[3] * b;\n return out;\n}\n/**\n * Adds two vec4's after scaling the second operand by a scalar value\n *\n * @param {vec4} out the receiving vector\n * @param {ReadonlyVec4} a the first operand\n * @param {ReadonlyVec4} b the second operand\n * @param {Number} scale the amount to scale b by before adding\n * @returns {vec4} out\n */\n\nexport function scaleAndAdd(out, a, b, scale) {\n out[0] = a[0] + b[0] * scale;\n out[1] = a[1] + b[1] * scale;\n out[2] = a[2] + b[2] * scale;\n out[3] = a[3] + b[3] * scale;\n return out;\n}\n/**\n * Calculates the euclidian distance between two vec4's\n *\n * @param {ReadonlyVec4} a the first operand\n * @param {ReadonlyVec4} b the second operand\n * @returns {Number} distance between a and b\n */\n\nexport function distance(a, b) {\n var x = b[0] - a[0];\n var y = b[1] - a[1];\n var z = b[2] - a[2];\n var w = b[3] - a[3];\n return Math.hypot(x, y, z, w);\n}\n/**\n * Calculates the squared euclidian distance between two vec4's\n *\n * @param {ReadonlyVec4} a the first operand\n * @param {ReadonlyVec4} b the second operand\n * @returns {Number} squared distance between a and b\n */\n\nexport function squaredDistance(a, b) {\n var x = b[0] - a[0];\n var y = b[1] - a[1];\n var z = b[2] - a[2];\n var w = b[3] - a[3];\n return x * x + y * y + z * z + w * w;\n}\n/**\n * Calculates the length of a vec4\n *\n * @param {ReadonlyVec4} a vector to calculate length of\n * @returns {Number} length of a\n */\n\nexport function length(a) {\n var x = a[0];\n var y = a[1];\n var z = a[2];\n var w = a[3];\n return Math.hypot(x, y, z, w);\n}\n/**\n * Calculates the squared length of a vec4\n *\n * @param {ReadonlyVec4} a vector to calculate squared length of\n * @returns {Number} squared length of a\n */\n\nexport function squaredLength(a) {\n var x = a[0];\n var y = a[1];\n var z = a[2];\n var w = a[3];\n return x * x + y * y + z * z + w * w;\n}\n/**\n * Negates the components of a vec4\n *\n * @param {vec4} out the receiving vector\n * @param {ReadonlyVec4} a vector to negate\n * @returns {vec4} out\n */\n\nexport function negate(out, a) {\n out[0] = -a[0];\n out[1] = -a[1];\n out[2] = -a[2];\n out[3] = -a[3];\n return out;\n}\n/**\n * Returns the inverse of the components of a vec4\n *\n * @param {vec4} out the receiving vector\n * @param {ReadonlyVec4} a vector to invert\n * @returns {vec4} out\n */\n\nexport function inverse(out, a) {\n out[0] = 1.0 / a[0];\n out[1] = 1.0 / a[1];\n out[2] = 1.0 / a[2];\n out[3] = 1.0 / a[3];\n return out;\n}\n/**\n * Normalize a vec4\n *\n * @param {vec4} out the receiving vector\n * @param {ReadonlyVec4} a vector to normalize\n * @returns {vec4} out\n */\n\nexport function normalize(out, a) {\n var x = a[0];\n var y = a[1];\n var z = a[2];\n var w = a[3];\n var len = x * x + y * y + z * z + w * w;\n\n if (len > 0) {\n len = 1 / Math.sqrt(len);\n }\n\n out[0] = x * len;\n out[1] = y * len;\n out[2] = z * len;\n out[3] = w * len;\n return out;\n}\n/**\n * Calculates the dot product of two vec4's\n *\n * @param {ReadonlyVec4} a the first operand\n * @param {ReadonlyVec4} b the second operand\n * @returns {Number} dot product of a and b\n */\n\nexport function dot(a, b) {\n return a[0] * b[0] + a[1] * b[1] + a[2] * b[2] + a[3] * b[3];\n}\n/**\n * Returns the cross-product of three vectors in a 4-dimensional space\n *\n * @param {ReadonlyVec4} result the receiving vector\n * @param {ReadonlyVec4} U the first vector\n * @param {ReadonlyVec4} V the second vector\n * @param {ReadonlyVec4} W the third vector\n * @returns {vec4} result\n */\n\nexport function cross(out, u, v, w) {\n var A = v[0] * w[1] - v[1] * w[0],\n B = v[0] * w[2] - v[2] * w[0],\n C = v[0] * w[3] - v[3] * w[0],\n D = v[1] * w[2] - v[2] * w[1],\n E = v[1] * w[3] - v[3] * w[1],\n F = v[2] * w[3] - v[3] * w[2];\n var G = u[0];\n var H = u[1];\n var I = u[2];\n var J = u[3];\n out[0] = H * F - I * E + J * D;\n out[1] = -(G * F) + I * C - J * B;\n out[2] = G * E - H * C + J * A;\n out[3] = -(G * D) + H * B - I * A;\n return out;\n}\n/**\n * Performs a linear interpolation between two vec4's\n *\n * @param {vec4} out the receiving vector\n * @param {ReadonlyVec4} a the first operand\n * @param {ReadonlyVec4} b the second operand\n * @param {Number} t interpolation amount, in the range [0-1], between the two inputs\n * @returns {vec4} out\n */\n\nexport function lerp(out, a, b, t) {\n var ax = a[0];\n var ay = a[1];\n var az = a[2];\n var aw = a[3];\n out[0] = ax + t * (b[0] - ax);\n out[1] = ay + t * (b[1] - ay);\n out[2] = az + t * (b[2] - az);\n out[3] = aw + t * (b[3] - aw);\n return out;\n}\n/**\n * Generates a random vector with the given scale\n *\n * @param {vec4} out the receiving vector\n * @param {Number} [scale] Length of the resulting vector. If ommitted, a unit vector will be returned\n * @returns {vec4} out\n */\n\nexport function random(out, scale) {\n scale = scale || 1.0; // Marsaglia, George. Choosing a Point from the Surface of a\n // Sphere. Ann. Math. Statist. 43 (1972), no. 2, 645--646.\n // http://projecteuclid.org/euclid.aoms/1177692644;\n\n var v1, v2, v3, v4;\n var s1, s2;\n\n do {\n v1 = glMatrix.RANDOM() * 2 - 1;\n v2 = glMatrix.RANDOM() * 2 - 1;\n s1 = v1 * v1 + v2 * v2;\n } while (s1 >= 1);\n\n do {\n v3 = glMatrix.RANDOM() * 2 - 1;\n v4 = glMatrix.RANDOM() * 2 - 1;\n s2 = v3 * v3 + v4 * v4;\n } while (s2 >= 1);\n\n var d = Math.sqrt((1 - s1) / s2);\n out[0] = scale * v1;\n out[1] = scale * v2;\n out[2] = scale * v3 * d;\n out[3] = scale * v4 * d;\n return out;\n}\n/**\n * Transforms the vec4 with a mat4.\n *\n * @param {vec4} out the receiving vector\n * @param {ReadonlyVec4} a the vector to transform\n * @param {ReadonlyMat4} m matrix to transform with\n * @returns {vec4} out\n */\n\nexport function transformMat4(out, a, m) {\n var x = a[0],\n y = a[1],\n z = a[2],\n w = a[3];\n out[0] = m[0] * x + m[4] * y + m[8] * z + m[12] * w;\n out[1] = m[1] * x + m[5] * y + m[9] * z + m[13] * w;\n out[2] = m[2] * x + m[6] * y + m[10] * z + m[14] * w;\n out[3] = m[3] * x + m[7] * y + m[11] * z + m[15] * w;\n return out;\n}\n/**\n * Transforms the vec4 with a quat\n *\n * @param {vec4} out the receiving vector\n * @param {ReadonlyVec4} a the vector to transform\n * @param {ReadonlyQuat} q quaternion to transform with\n * @returns {vec4} out\n */\n\nexport function transformQuat(out, a, q) {\n var x = a[0],\n y = a[1],\n z = a[2];\n var qx = q[0],\n qy = q[1],\n qz = q[2],\n qw = q[3]; // calculate quat * vec\n\n var ix = qw * x + qy * z - qz * y;\n var iy = qw * y + qz * x - qx * z;\n var iz = qw * z + qx * y - qy * x;\n var iw = -qx * x - qy * y - qz * z; // calculate result * inverse quat\n\n out[0] = ix * qw + iw * -qx + iy * -qz - iz * -qy;\n out[1] = iy * qw + iw * -qy + iz * -qx - ix * -qz;\n out[2] = iz * qw + iw * -qz + ix * -qy - iy * -qx;\n out[3] = a[3];\n return out;\n}\n/**\n * Set the components of a vec4 to zero\n *\n * @param {vec4} out the receiving vector\n * @returns {vec4} out\n */\n\nexport function zero(out) {\n out[0] = 0.0;\n out[1] = 0.0;\n out[2] = 0.0;\n out[3] = 0.0;\n return out;\n}\n/**\n * Returns a string representation of a vector\n *\n * @param {ReadonlyVec4} a vector to represent as a string\n * @returns {String} string representation of the vector\n */\n\nexport function str(a) {\n return \"vec4(\" + a[0] + \", \" + a[1] + \", \" + a[2] + \", \" + a[3] + \")\";\n}\n/**\n * Returns whether or not the vectors have exactly the same elements in the same position (when compared with ===)\n *\n * @param {ReadonlyVec4} a The first vector.\n * @param {ReadonlyVec4} b The second vector.\n * @returns {Boolean} True if the vectors are equal, false otherwise.\n */\n\nexport function exactEquals(a, b) {\n return a[0] === b[0] && a[1] === b[1] && a[2] === b[2] && a[3] === b[3];\n}\n/**\n * Returns whether or not the vectors have approximately the same elements in the same position.\n *\n * @param {ReadonlyVec4} a The first vector.\n * @param {ReadonlyVec4} b The second vector.\n * @returns {Boolean} True if the vectors are equal, false otherwise.\n */\n\nexport function equals(a, b) {\n var a0 = a[0],\n a1 = a[1],\n a2 = a[2],\n a3 = a[3];\n var b0 = b[0],\n b1 = b[1],\n b2 = b[2],\n b3 = b[3];\n return Math.abs(a0 - b0) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a0), Math.abs(b0)) && Math.abs(a1 - b1) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a1), Math.abs(b1)) && Math.abs(a2 - b2) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a2), Math.abs(b2)) && Math.abs(a3 - b3) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a3), Math.abs(b3));\n}\n/**\n * Alias for {@link vec4.subtract}\n * @function\n */\n\nexport var sub = subtract;\n/**\n * Alias for {@link vec4.multiply}\n * @function\n */\n\nexport var mul = multiply;\n/**\n * Alias for {@link vec4.divide}\n * @function\n */\n\nexport var div = divide;\n/**\n * Alias for {@link vec4.distance}\n * @function\n */\n\nexport var dist = distance;\n/**\n * Alias for {@link vec4.squaredDistance}\n * @function\n */\n\nexport var sqrDist = squaredDistance;\n/**\n * Alias for {@link vec4.length}\n * @function\n */\n\nexport var len = length;\n/**\n * Alias for {@link vec4.squaredLength}\n * @function\n */\n\nexport var sqrLen = squaredLength;\n/**\n * Perform some operation over an array of vec4s.\n *\n * @param {Array} a the array of vectors to iterate over\n * @param {Number} stride Number of elements between the start of each vec4. If 0 assumes tightly packed\n * @param {Number} offset Number of elements to skip at the beginning of the array\n * @param {Number} count Number of vec4s to iterate over. If 0 iterates over entire array\n * @param {Function} fn Function to call for each vector in the array\n * @param {Object} [arg] additional argument to pass to fn\n * @returns {Array} a\n * @function\n */\n\nexport var forEach = function () {\n var vec = create();\n return function (a, stride, offset, count, fn, arg) {\n var i, l;\n\n if (!stride) {\n stride = 4;\n }\n\n if (!offset) {\n offset = 0;\n }\n\n if (count) {\n l = Math.min(count * stride + offset, a.length);\n } else {\n l = a.length;\n }\n\n for (i = offset; i < l; i += stride) {\n vec[0] = a[i];\n vec[1] = a[i + 1];\n vec[2] = a[i + 2];\n vec[3] = a[i + 3];\n fn(vec, vec, arg);\n a[i] = vec[0];\n a[i + 1] = vec[1];\n a[i + 2] = vec[2];\n a[i + 3] = vec[3];\n }\n\n return a;\n };\n}();","import * as glMatrix from \"./common.js\";\n/**\n * 3x3 Matrix\n * @module mat3\n */\n\n/**\n * Creates a new identity mat3\n *\n * @returns {mat3} a new 3x3 matrix\n */\n\nexport function create() {\n var out = new glMatrix.ARRAY_TYPE(9);\n\n if (glMatrix.ARRAY_TYPE != Float32Array) {\n out[1] = 0;\n out[2] = 0;\n out[3] = 0;\n out[5] = 0;\n out[6] = 0;\n out[7] = 0;\n }\n\n out[0] = 1;\n out[4] = 1;\n out[8] = 1;\n return out;\n}\n/**\n * Copies the upper-left 3x3 values into the given mat3.\n *\n * @param {mat3} out the receiving 3x3 matrix\n * @param {ReadonlyMat4} a the source 4x4 matrix\n * @returns {mat3} out\n */\n\nexport function fromMat4(out, a) {\n out[0] = a[0];\n out[1] = a[1];\n out[2] = a[2];\n out[3] = a[4];\n out[4] = a[5];\n out[5] = a[6];\n out[6] = a[8];\n out[7] = a[9];\n out[8] = a[10];\n return out;\n}\n/**\n * Creates a new mat3 initialized with values from an existing matrix\n *\n * @param {ReadonlyMat3} a matrix to clone\n * @returns {mat3} a new 3x3 matrix\n */\n\nexport function clone(a) {\n var out = new glMatrix.ARRAY_TYPE(9);\n out[0] = a[0];\n out[1] = a[1];\n out[2] = a[2];\n out[3] = a[3];\n out[4] = a[4];\n out[5] = a[5];\n out[6] = a[6];\n out[7] = a[7];\n out[8] = a[8];\n return out;\n}\n/**\n * Copy the values from one mat3 to another\n *\n * @param {mat3} out the receiving matrix\n * @param {ReadonlyMat3} a the source matrix\n * @returns {mat3} out\n */\n\nexport function copy(out, a) {\n out[0] = a[0];\n out[1] = a[1];\n out[2] = a[2];\n out[3] = a[3];\n out[4] = a[4];\n out[5] = a[5];\n out[6] = a[6];\n out[7] = a[7];\n out[8] = a[8];\n return out;\n}\n/**\n * Create a new mat3 with the given values\n *\n * @param {Number} m00 Component in column 0, row 0 position (index 0)\n * @param {Number} m01 Component in column 0, row 1 position (index 1)\n * @param {Number} m02 Component in column 0, row 2 position (index 2)\n * @param {Number} m10 Component in column 1, row 0 position (index 3)\n * @param {Number} m11 Component in column 1, row 1 position (index 4)\n * @param {Number} m12 Component in column 1, row 2 position (index 5)\n * @param {Number} m20 Component in column 2, row 0 position (index 6)\n * @param {Number} m21 Component in column 2, row 1 position (index 7)\n * @param {Number} m22 Component in column 2, row 2 position (index 8)\n * @returns {mat3} A new mat3\n */\n\nexport function fromValues(m00, m01, m02, m10, m11, m12, m20, m21, m22) {\n var out = new glMatrix.ARRAY_TYPE(9);\n out[0] = m00;\n out[1] = m01;\n out[2] = m02;\n out[3] = m10;\n out[4] = m11;\n out[5] = m12;\n out[6] = m20;\n out[7] = m21;\n out[8] = m22;\n return out;\n}\n/**\n * Set the components of a mat3 to the given values\n *\n * @param {mat3} out the receiving matrix\n * @param {Number} m00 Component in column 0, row 0 position (index 0)\n * @param {Number} m01 Component in column 0, row 1 position (index 1)\n * @param {Number} m02 Component in column 0, row 2 position (index 2)\n * @param {Number} m10 Component in column 1, row 0 position (index 3)\n * @param {Number} m11 Component in column 1, row 1 position (index 4)\n * @param {Number} m12 Component in column 1, row 2 position (index 5)\n * @param {Number} m20 Component in column 2, row 0 position (index 6)\n * @param {Number} m21 Component in column 2, row 1 position (index 7)\n * @param {Number} m22 Component in column 2, row 2 position (index 8)\n * @returns {mat3} out\n */\n\nexport function set(out, m00, m01, m02, m10, m11, m12, m20, m21, m22) {\n out[0] = m00;\n out[1] = m01;\n out[2] = m02;\n out[3] = m10;\n out[4] = m11;\n out[5] = m12;\n out[6] = m20;\n out[7] = m21;\n out[8] = m22;\n return out;\n}\n/**\n * Set a mat3 to the identity matrix\n *\n * @param {mat3} out the receiving matrix\n * @returns {mat3} out\n */\n\nexport function identity(out) {\n out[0] = 1;\n out[1] = 0;\n out[2] = 0;\n out[3] = 0;\n out[4] = 1;\n out[5] = 0;\n out[6] = 0;\n out[7] = 0;\n out[8] = 1;\n return out;\n}\n/**\n * Transpose the values of a mat3\n *\n * @param {mat3} out the receiving matrix\n * @param {ReadonlyMat3} a the source matrix\n * @returns {mat3} out\n */\n\nexport function transpose(out, a) {\n // If we are transposing ourselves we can skip a few steps but have to cache some values\n if (out === a) {\n var a01 = a[1],\n a02 = a[2],\n a12 = a[5];\n out[1] = a[3];\n out[2] = a[6];\n out[3] = a01;\n out[5] = a[7];\n out[6] = a02;\n out[7] = a12;\n } else {\n out[0] = a[0];\n out[1] = a[3];\n out[2] = a[6];\n out[3] = a[1];\n out[4] = a[4];\n out[5] = a[7];\n out[6] = a[2];\n out[7] = a[5];\n out[8] = a[8];\n }\n\n return out;\n}\n/**\n * Inverts a mat3\n *\n * @param {mat3} out the receiving matrix\n * @param {ReadonlyMat3} a the source matrix\n * @returns {mat3} out\n */\n\nexport function invert(out, a) {\n var a00 = a[0],\n a01 = a[1],\n a02 = a[2];\n var a10 = a[3],\n a11 = a[4],\n a12 = a[5];\n var a20 = a[6],\n a21 = a[7],\n a22 = a[8];\n var b01 = a22 * a11 - a12 * a21;\n var b11 = -a22 * a10 + a12 * a20;\n var b21 = a21 * a10 - a11 * a20; // Calculate the determinant\n\n var det = a00 * b01 + a01 * b11 + a02 * b21;\n\n if (!det) {\n return null;\n }\n\n det = 1.0 / det;\n out[0] = b01 * det;\n out[1] = (-a22 * a01 + a02 * a21) * det;\n out[2] = (a12 * a01 - a02 * a11) * det;\n out[3] = b11 * det;\n out[4] = (a22 * a00 - a02 * a20) * det;\n out[5] = (-a12 * a00 + a02 * a10) * det;\n out[6] = b21 * det;\n out[7] = (-a21 * a00 + a01 * a20) * det;\n out[8] = (a11 * a00 - a01 * a10) * det;\n return out;\n}\n/**\n * Calculates the adjugate of a mat3\n *\n * @param {mat3} out the receiving matrix\n * @param {ReadonlyMat3} a the source matrix\n * @returns {mat3} out\n */\n\nexport function adjoint(out, a) {\n var a00 = a[0],\n a01 = a[1],\n a02 = a[2];\n var a10 = a[3],\n a11 = a[4],\n a12 = a[5];\n var a20 = a[6],\n a21 = a[7],\n a22 = a[8];\n out[0] = a11 * a22 - a12 * a21;\n out[1] = a02 * a21 - a01 * a22;\n out[2] = a01 * a12 - a02 * a11;\n out[3] = a12 * a20 - a10 * a22;\n out[4] = a00 * a22 - a02 * a20;\n out[5] = a02 * a10 - a00 * a12;\n out[6] = a10 * a21 - a11 * a20;\n out[7] = a01 * a20 - a00 * a21;\n out[8] = a00 * a11 - a01 * a10;\n return out;\n}\n/**\n * Calculates the determinant of a mat3\n *\n * @param {ReadonlyMat3} a the source matrix\n * @returns {Number} determinant of a\n */\n\nexport function determinant(a) {\n var a00 = a[0],\n a01 = a[1],\n a02 = a[2];\n var a10 = a[3],\n a11 = a[4],\n a12 = a[5];\n var a20 = a[6],\n a21 = a[7],\n a22 = a[8];\n return a00 * (a22 * a11 - a12 * a21) + a01 * (-a22 * a10 + a12 * a20) + a02 * (a21 * a10 - a11 * a20);\n}\n/**\n * Multiplies two mat3's\n *\n * @param {mat3} out the receiving matrix\n * @param {ReadonlyMat3} a the first operand\n * @param {ReadonlyMat3} b the second operand\n * @returns {mat3} out\n */\n\nexport function multiply(out, a, b) {\n var a00 = a[0],\n a01 = a[1],\n a02 = a[2];\n var a10 = a[3],\n a11 = a[4],\n a12 = a[5];\n var a20 = a[6],\n a21 = a[7],\n a22 = a[8];\n var b00 = b[0],\n b01 = b[1],\n b02 = b[2];\n var b10 = b[3],\n b11 = b[4],\n b12 = b[5];\n var b20 = b[6],\n b21 = b[7],\n b22 = b[8];\n out[0] = b00 * a00 + b01 * a10 + b02 * a20;\n out[1] = b00 * a01 + b01 * a11 + b02 * a21;\n out[2] = b00 * a02 + b01 * a12 + b02 * a22;\n out[3] = b10 * a00 + b11 * a10 + b12 * a20;\n out[4] = b10 * a01 + b11 * a11 + b12 * a21;\n out[5] = b10 * a02 + b11 * a12 + b12 * a22;\n out[6] = b20 * a00 + b21 * a10 + b22 * a20;\n out[7] = b20 * a01 + b21 * a11 + b22 * a21;\n out[8] = b20 * a02 + b21 * a12 + b22 * a22;\n return out;\n}\n/**\n * Translate a mat3 by the given vector\n *\n * @param {mat3} out the receiving matrix\n * @param {ReadonlyMat3} a the matrix to translate\n * @param {ReadonlyVec2} v vector to translate by\n * @returns {mat3} out\n */\n\nexport function translate(out, a, v) {\n var a00 = a[0],\n a01 = a[1],\n a02 = a[2],\n a10 = a[3],\n a11 = a[4],\n a12 = a[5],\n a20 = a[6],\n a21 = a[7],\n a22 = a[8],\n x = v[0],\n y = v[1];\n out[0] = a00;\n out[1] = a01;\n out[2] = a02;\n out[3] = a10;\n out[4] = a11;\n out[5] = a12;\n out[6] = x * a00 + y * a10 + a20;\n out[7] = x * a01 + y * a11 + a21;\n out[8] = x * a02 + y * a12 + a22;\n return out;\n}\n/**\n * Rotates a mat3 by the given angle\n *\n * @param {mat3} out the receiving matrix\n * @param {ReadonlyMat3} a the matrix to rotate\n * @param {Number} rad the angle to rotate the matrix by\n * @returns {mat3} out\n */\n\nexport function rotate(out, a, rad) {\n var a00 = a[0],\n a01 = a[1],\n a02 = a[2],\n a10 = a[3],\n a11 = a[4],\n a12 = a[5],\n a20 = a[6],\n a21 = a[7],\n a22 = a[8],\n s = Math.sin(rad),\n c = Math.cos(rad);\n out[0] = c * a00 + s * a10;\n out[1] = c * a01 + s * a11;\n out[2] = c * a02 + s * a12;\n out[3] = c * a10 - s * a00;\n out[4] = c * a11 - s * a01;\n out[5] = c * a12 - s * a02;\n out[6] = a20;\n out[7] = a21;\n out[8] = a22;\n return out;\n}\n/**\n * Scales the mat3 by the dimensions in the given vec2\n *\n * @param {mat3} out the receiving matrix\n * @param {ReadonlyMat3} a the matrix to rotate\n * @param {ReadonlyVec2} v the vec2 to scale the matrix by\n * @returns {mat3} out\n **/\n\nexport function scale(out, a, v) {\n var x = v[0],\n y = v[1];\n out[0] = x * a[0];\n out[1] = x * a[1];\n out[2] = x * a[2];\n out[3] = y * a[3];\n out[4] = y * a[4];\n out[5] = y * a[5];\n out[6] = a[6];\n out[7] = a[7];\n out[8] = a[8];\n return out;\n}\n/**\n * Creates a matrix from a vector translation\n * This is equivalent to (but much faster than):\n *\n * mat3.identity(dest);\n * mat3.translate(dest, dest, vec);\n *\n * @param {mat3} out mat3 receiving operation result\n * @param {ReadonlyVec2} v Translation vector\n * @returns {mat3} out\n */\n\nexport function fromTranslation(out, v) {\n out[0] = 1;\n out[1] = 0;\n out[2] = 0;\n out[3] = 0;\n out[4] = 1;\n out[5] = 0;\n out[6] = v[0];\n out[7] = v[1];\n out[8] = 1;\n return out;\n}\n/**\n * Creates a matrix from a given angle\n * This is equivalent to (but much faster than):\n *\n * mat3.identity(dest);\n * mat3.rotate(dest, dest, rad);\n *\n * @param {mat3} out mat3 receiving operation result\n * @param {Number} rad the angle to rotate the matrix by\n * @returns {mat3} out\n */\n\nexport function fromRotation(out, rad) {\n var s = Math.sin(rad),\n c = Math.cos(rad);\n out[0] = c;\n out[1] = s;\n out[2] = 0;\n out[3] = -s;\n out[4] = c;\n out[5] = 0;\n out[6] = 0;\n out[7] = 0;\n out[8] = 1;\n return out;\n}\n/**\n * Creates a matrix from a vector scaling\n * This is equivalent to (but much faster than):\n *\n * mat3.identity(dest);\n * mat3.scale(dest, dest, vec);\n *\n * @param {mat3} out mat3 receiving operation result\n * @param {ReadonlyVec2} v Scaling vector\n * @returns {mat3} out\n */\n\nexport function fromScaling(out, v) {\n out[0] = v[0];\n out[1] = 0;\n out[2] = 0;\n out[3] = 0;\n out[4] = v[1];\n out[5] = 0;\n out[6] = 0;\n out[7] = 0;\n out[8] = 1;\n return out;\n}\n/**\n * Copies the values from a mat2d into a mat3\n *\n * @param {mat3} out the receiving matrix\n * @param {ReadonlyMat2d} a the matrix to copy\n * @returns {mat3} out\n **/\n\nexport function fromMat2d(out, a) {\n out[0] = a[0];\n out[1] = a[1];\n out[2] = 0;\n out[3] = a[2];\n out[4] = a[3];\n out[5] = 0;\n out[6] = a[4];\n out[7] = a[5];\n out[8] = 1;\n return out;\n}\n/**\n * Calculates a 3x3 matrix from the given quaternion\n *\n * @param {mat3} out mat3 receiving operation result\n * @param {ReadonlyQuat} q Quaternion to create matrix from\n *\n * @returns {mat3} out\n */\n\nexport function fromQuat(out, q) {\n var x = q[0],\n y = q[1],\n z = q[2],\n w = q[3];\n var x2 = x + x;\n var y2 = y + y;\n var z2 = z + z;\n var xx = x * x2;\n var yx = y * x2;\n var yy = y * y2;\n var zx = z * x2;\n var zy = z * y2;\n var zz = z * z2;\n var wx = w * x2;\n var wy = w * y2;\n var wz = w * z2;\n out[0] = 1 - yy - zz;\n out[3] = yx - wz;\n out[6] = zx + wy;\n out[1] = yx + wz;\n out[4] = 1 - xx - zz;\n out[7] = zy - wx;\n out[2] = zx - wy;\n out[5] = zy + wx;\n out[8] = 1 - xx - yy;\n return out;\n}\n/**\n * Calculates a 3x3 normal matrix (transpose inverse) from the 4x4 matrix\n *\n * @param {mat3} out mat3 receiving operation result\n * @param {ReadonlyMat4} a Mat4 to derive the normal matrix from\n *\n * @returns {mat3} out\n */\n\nexport function normalFromMat4(out, a) {\n var a00 = a[0],\n a01 = a[1],\n a02 = a[2],\n a03 = a[3];\n var a10 = a[4],\n a11 = a[5],\n a12 = a[6],\n a13 = a[7];\n var a20 = a[8],\n a21 = a[9],\n a22 = a[10],\n a23 = a[11];\n var a30 = a[12],\n a31 = a[13],\n a32 = a[14],\n a33 = a[15];\n var b00 = a00 * a11 - a01 * a10;\n var b01 = a00 * a12 - a02 * a10;\n var b02 = a00 * a13 - a03 * a10;\n var b03 = a01 * a12 - a02 * a11;\n var b04 = a01 * a13 - a03 * a11;\n var b05 = a02 * a13 - a03 * a12;\n var b06 = a20 * a31 - a21 * a30;\n var b07 = a20 * a32 - a22 * a30;\n var b08 = a20 * a33 - a23 * a30;\n var b09 = a21 * a32 - a22 * a31;\n var b10 = a21 * a33 - a23 * a31;\n var b11 = a22 * a33 - a23 * a32; // Calculate the determinant\n\n var det = b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;\n\n if (!det) {\n return null;\n }\n\n det = 1.0 / det;\n out[0] = (a11 * b11 - a12 * b10 + a13 * b09) * det;\n out[1] = (a12 * b08 - a10 * b11 - a13 * b07) * det;\n out[2] = (a10 * b10 - a11 * b08 + a13 * b06) * det;\n out[3] = (a02 * b10 - a01 * b11 - a03 * b09) * det;\n out[4] = (a00 * b11 - a02 * b08 + a03 * b07) * det;\n out[5] = (a01 * b08 - a00 * b10 - a03 * b06) * det;\n out[6] = (a31 * b05 - a32 * b04 + a33 * b03) * det;\n out[7] = (a32 * b02 - a30 * b05 - a33 * b01) * det;\n out[8] = (a30 * b04 - a31 * b02 + a33 * b00) * det;\n return out;\n}\n/**\n * Generates a 2D projection matrix with the given bounds\n *\n * @param {mat3} out mat3 frustum matrix will be written into\n * @param {number} width Width of your gl context\n * @param {number} height Height of gl context\n * @returns {mat3} out\n */\n\nexport function projection(out, width, height) {\n out[0] = 2 / width;\n out[1] = 0;\n out[2] = 0;\n out[3] = 0;\n out[4] = -2 / height;\n out[5] = 0;\n out[6] = -1;\n out[7] = 1;\n out[8] = 1;\n return out;\n}\n/**\n * Returns a string representation of a mat3\n *\n * @param {ReadonlyMat3} a matrix to represent as a string\n * @returns {String} string representation of the matrix\n */\n\nexport function str(a) {\n return \"mat3(\" + a[0] + \", \" + a[1] + \", \" + a[2] + \", \" + a[3] + \", \" + a[4] + \", \" + a[5] + \", \" + a[6] + \", \" + a[7] + \", \" + a[8] + \")\";\n}\n/**\n * Returns Frobenius norm of a mat3\n *\n * @param {ReadonlyMat3} a the matrix to calculate Frobenius norm of\n * @returns {Number} Frobenius norm\n */\n\nexport function frob(a) {\n return Math.hypot(a[0], a[1], a[2], a[3], a[4], a[5], a[6], a[7], a[8]);\n}\n/**\n * Adds two mat3's\n *\n * @param {mat3} out the receiving matrix\n * @param {ReadonlyMat3} a the first operand\n * @param {ReadonlyMat3} b the second operand\n * @returns {mat3} out\n */\n\nexport function add(out, a, b) {\n out[0] = a[0] + b[0];\n out[1] = a[1] + b[1];\n out[2] = a[2] + b[2];\n out[3] = a[3] + b[3];\n out[4] = a[4] + b[4];\n out[5] = a[5] + b[5];\n out[6] = a[6] + b[6];\n out[7] = a[7] + b[7];\n out[8] = a[8] + b[8];\n return out;\n}\n/**\n * Subtracts matrix b from matrix a\n *\n * @param {mat3} out the receiving matrix\n * @param {ReadonlyMat3} a the first operand\n * @param {ReadonlyMat3} b the second operand\n * @returns {mat3} out\n */\n\nexport function subtract(out, a, b) {\n out[0] = a[0] - b[0];\n out[1] = a[1] - b[1];\n out[2] = a[2] - b[2];\n out[3] = a[3] - b[3];\n out[4] = a[4] - b[4];\n out[5] = a[5] - b[5];\n out[6] = a[6] - b[6];\n out[7] = a[7] - b[7];\n out[8] = a[8] - b[8];\n return out;\n}\n/**\n * Multiply each element of the matrix by a scalar.\n *\n * @param {mat3} out the receiving matrix\n * @param {ReadonlyMat3} a the matrix to scale\n * @param {Number} b amount to scale the matrix's elements by\n * @returns {mat3} out\n */\n\nexport function multiplyScalar(out, a, b) {\n out[0] = a[0] * b;\n out[1] = a[1] * b;\n out[2] = a[2] * b;\n out[3] = a[3] * b;\n out[4] = a[4] * b;\n out[5] = a[5] * b;\n out[6] = a[6] * b;\n out[7] = a[7] * b;\n out[8] = a[8] * b;\n return out;\n}\n/**\n * Adds two mat3's after multiplying each element of the second operand by a scalar value.\n *\n * @param {mat3} out the receiving vector\n * @param {ReadonlyMat3} a the first operand\n * @param {ReadonlyMat3} b the second operand\n * @param {Number} scale the amount to scale b's elements by before adding\n * @returns {mat3} out\n */\n\nexport function multiplyScalarAndAdd(out, a, b, scale) {\n out[0] = a[0] + b[0] * scale;\n out[1] = a[1] + b[1] * scale;\n out[2] = a[2] + b[2] * scale;\n out[3] = a[3] + b[3] * scale;\n out[4] = a[4] + b[4] * scale;\n out[5] = a[5] + b[5] * scale;\n out[6] = a[6] + b[6] * scale;\n out[7] = a[7] + b[7] * scale;\n out[8] = a[8] + b[8] * scale;\n return out;\n}\n/**\n * Returns whether or not the matrices have exactly the same elements in the same position (when compared with ===)\n *\n * @param {ReadonlyMat3} a The first matrix.\n * @param {ReadonlyMat3} b The second matrix.\n * @returns {Boolean} True if the matrices are equal, false otherwise.\n */\n\nexport function exactEquals(a, b) {\n return a[0] === b[0] && a[1] === b[1] && a[2] === b[2] && a[3] === b[3] && a[4] === b[4] && a[5] === b[5] && a[6] === b[6] && a[7] === b[7] && a[8] === b[8];\n}\n/**\n * Returns whether or not the matrices have approximately the same elements in the same position.\n *\n * @param {ReadonlyMat3} a The first matrix.\n * @param {ReadonlyMat3} b The second matrix.\n * @returns {Boolean} True if the matrices are equal, false otherwise.\n */\n\nexport function equals(a, b) {\n var a0 = a[0],\n a1 = a[1],\n a2 = a[2],\n a3 = a[3],\n a4 = a[4],\n a5 = a[5],\n a6 = a[6],\n a7 = a[7],\n a8 = a[8];\n var b0 = b[0],\n b1 = b[1],\n b2 = b[2],\n b3 = b[3],\n b4 = b[4],\n b5 = b[5],\n b6 = b[6],\n b7 = b[7],\n b8 = b[8];\n return Math.abs(a0 - b0) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a0), Math.abs(b0)) && Math.abs(a1 - b1) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a1), Math.abs(b1)) && Math.abs(a2 - b2) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a2), Math.abs(b2)) && Math.abs(a3 - b3) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a3), Math.abs(b3)) && Math.abs(a4 - b4) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a4), Math.abs(b4)) && Math.abs(a5 - b5) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a5), Math.abs(b5)) && Math.abs(a6 - b6) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a6), Math.abs(b6)) && Math.abs(a7 - b7) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a7), Math.abs(b7)) && Math.abs(a8 - b8) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a8), Math.abs(b8));\n}\n/**\n * Alias for {@link mat3.multiply}\n * @function\n */\n\nexport var mul = multiply;\n/**\n * Alias for {@link mat3.subtract}\n * @function\n */\n\nexport var sub = subtract;","import * as glMatrix from \"./common.js\";\n/**\n * 4x4 Matrix
Format: column-major, when typed out it looks like row-major
The matrices are being post multiplied.\n * @module mat4\n */\n\n/**\n * Creates a new identity mat4\n *\n * @returns {mat4} a new 4x4 matrix\n */\n\nexport function create() {\n var out = new glMatrix.ARRAY_TYPE(16);\n\n if (glMatrix.ARRAY_TYPE != Float32Array) {\n out[1] = 0;\n out[2] = 0;\n out[3] = 0;\n out[4] = 0;\n out[6] = 0;\n out[7] = 0;\n out[8] = 0;\n out[9] = 0;\n out[11] = 0;\n out[12] = 0;\n out[13] = 0;\n out[14] = 0;\n }\n\n out[0] = 1;\n out[5] = 1;\n out[10] = 1;\n out[15] = 1;\n return out;\n}\n/**\n * Creates a new mat4 initialized with values from an existing matrix\n *\n * @param {ReadonlyMat4} a matrix to clone\n * @returns {mat4} a new 4x4 matrix\n */\n\nexport function clone(a) {\n var out = new glMatrix.ARRAY_TYPE(16);\n out[0] = a[0];\n out[1] = a[1];\n out[2] = a[2];\n out[3] = a[3];\n out[4] = a[4];\n out[5] = a[5];\n out[6] = a[6];\n out[7] = a[7];\n out[8] = a[8];\n out[9] = a[9];\n out[10] = a[10];\n out[11] = a[11];\n out[12] = a[12];\n out[13] = a[13];\n out[14] = a[14];\n out[15] = a[15];\n return out;\n}\n/**\n * Copy the values from one mat4 to another\n *\n * @param {mat4} out the receiving matrix\n * @param {ReadonlyMat4} a the source matrix\n * @returns {mat4} out\n */\n\nexport function copy(out, a) {\n out[0] = a[0];\n out[1] = a[1];\n out[2] = a[2];\n out[3] = a[3];\n out[4] = a[4];\n out[5] = a[5];\n out[6] = a[6];\n out[7] = a[7];\n out[8] = a[8];\n out[9] = a[9];\n out[10] = a[10];\n out[11] = a[11];\n out[12] = a[12];\n out[13] = a[13];\n out[14] = a[14];\n out[15] = a[15];\n return out;\n}\n/**\n * Create a new mat4 with the given values\n *\n * @param {Number} m00 Component in column 0, row 0 position (index 0)\n * @param {Number} m01 Component in column 0, row 1 position (index 1)\n * @param {Number} m02 Component in column 0, row 2 position (index 2)\n * @param {Number} m03 Component in column 0, row 3 position (index 3)\n * @param {Number} m10 Component in column 1, row 0 position (index 4)\n * @param {Number} m11 Component in column 1, row 1 position (index 5)\n * @param {Number} m12 Component in column 1, row 2 position (index 6)\n * @param {Number} m13 Component in column 1, row 3 position (index 7)\n * @param {Number} m20 Component in column 2, row 0 position (index 8)\n * @param {Number} m21 Component in column 2, row 1 position (index 9)\n * @param {Number} m22 Component in column 2, row 2 position (index 10)\n * @param {Number} m23 Component in column 2, row 3 position (index 11)\n * @param {Number} m30 Component in column 3, row 0 position (index 12)\n * @param {Number} m31 Component in column 3, row 1 position (index 13)\n * @param {Number} m32 Component in column 3, row 2 position (index 14)\n * @param {Number} m33 Component in column 3, row 3 position (index 15)\n * @returns {mat4} A new mat4\n */\n\nexport function fromValues(m00, m01, m02, m03, m10, m11, m12, m13, m20, m21, m22, m23, m30, m31, m32, m33) {\n var out = new glMatrix.ARRAY_TYPE(16);\n out[0] = m00;\n out[1] = m01;\n out[2] = m02;\n out[3] = m03;\n out[4] = m10;\n out[5] = m11;\n out[6] = m12;\n out[7] = m13;\n out[8] = m20;\n out[9] = m21;\n out[10] = m22;\n out[11] = m23;\n out[12] = m30;\n out[13] = m31;\n out[14] = m32;\n out[15] = m33;\n return out;\n}\n/**\n * Set the components of a mat4 to the given values\n *\n * @param {mat4} out the receiving matrix\n * @param {Number} m00 Component in column 0, row 0 position (index 0)\n * @param {Number} m01 Component in column 0, row 1 position (index 1)\n * @param {Number} m02 Component in column 0, row 2 position (index 2)\n * @param {Number} m03 Component in column 0, row 3 position (index 3)\n * @param {Number} m10 Component in column 1, row 0 position (index 4)\n * @param {Number} m11 Component in column 1, row 1 position (index 5)\n * @param {Number} m12 Component in column 1, row 2 position (index 6)\n * @param {Number} m13 Component in column 1, row 3 position (index 7)\n * @param {Number} m20 Component in column 2, row 0 position (index 8)\n * @param {Number} m21 Component in column 2, row 1 position (index 9)\n * @param {Number} m22 Component in column 2, row 2 position (index 10)\n * @param {Number} m23 Component in column 2, row 3 position (index 11)\n * @param {Number} m30 Component in column 3, row 0 position (index 12)\n * @param {Number} m31 Component in column 3, row 1 position (index 13)\n * @param {Number} m32 Component in column 3, row 2 position (index 14)\n * @param {Number} m33 Component in column 3, row 3 position (index 15)\n * @returns {mat4} out\n */\n\nexport function set(out, m00, m01, m02, m03, m10, m11, m12, m13, m20, m21, m22, m23, m30, m31, m32, m33) {\n out[0] = m00;\n out[1] = m01;\n out[2] = m02;\n out[3] = m03;\n out[4] = m10;\n out[5] = m11;\n out[6] = m12;\n out[7] = m13;\n out[8] = m20;\n out[9] = m21;\n out[10] = m22;\n out[11] = m23;\n out[12] = m30;\n out[13] = m31;\n out[14] = m32;\n out[15] = m33;\n return out;\n}\n/**\n * Set a mat4 to the identity matrix\n *\n * @param {mat4} out the receiving matrix\n * @returns {mat4} out\n */\n\nexport function identity(out) {\n out[0] = 1;\n out[1] = 0;\n out[2] = 0;\n out[3] = 0;\n out[4] = 0;\n out[5] = 1;\n out[6] = 0;\n out[7] = 0;\n out[8] = 0;\n out[9] = 0;\n out[10] = 1;\n out[11] = 0;\n out[12] = 0;\n out[13] = 0;\n out[14] = 0;\n out[15] = 1;\n return out;\n}\n/**\n * Transpose the values of a mat4\n *\n * @param {mat4} out the receiving matrix\n * @param {ReadonlyMat4} a the source matrix\n * @returns {mat4} out\n */\n\nexport function transpose(out, a) {\n // If we are transposing ourselves we can skip a few steps but have to cache some values\n if (out === a) {\n var a01 = a[1],\n a02 = a[2],\n a03 = a[3];\n var a12 = a[6],\n a13 = a[7];\n var a23 = a[11];\n out[1] = a[4];\n out[2] = a[8];\n out[3] = a[12];\n out[4] = a01;\n out[6] = a[9];\n out[7] = a[13];\n out[8] = a02;\n out[9] = a12;\n out[11] = a[14];\n out[12] = a03;\n out[13] = a13;\n out[14] = a23;\n } else {\n out[0] = a[0];\n out[1] = a[4];\n out[2] = a[8];\n out[3] = a[12];\n out[4] = a[1];\n out[5] = a[5];\n out[6] = a[9];\n out[7] = a[13];\n out[8] = a[2];\n out[9] = a[6];\n out[10] = a[10];\n out[11] = a[14];\n out[12] = a[3];\n out[13] = a[7];\n out[14] = a[11];\n out[15] = a[15];\n }\n\n return out;\n}\n/**\n * Inverts a mat4\n *\n * @param {mat4} out the receiving matrix\n * @param {ReadonlyMat4} a the source matrix\n * @returns {mat4} out\n */\n\nexport function invert(out, a) {\n var a00 = a[0],\n a01 = a[1],\n a02 = a[2],\n a03 = a[3];\n var a10 = a[4],\n a11 = a[5],\n a12 = a[6],\n a13 = a[7];\n var a20 = a[8],\n a21 = a[9],\n a22 = a[10],\n a23 = a[11];\n var a30 = a[12],\n a31 = a[13],\n a32 = a[14],\n a33 = a[15];\n var b00 = a00 * a11 - a01 * a10;\n var b01 = a00 * a12 - a02 * a10;\n var b02 = a00 * a13 - a03 * a10;\n var b03 = a01 * a12 - a02 * a11;\n var b04 = a01 * a13 - a03 * a11;\n var b05 = a02 * a13 - a03 * a12;\n var b06 = a20 * a31 - a21 * a30;\n var b07 = a20 * a32 - a22 * a30;\n var b08 = a20 * a33 - a23 * a30;\n var b09 = a21 * a32 - a22 * a31;\n var b10 = a21 * a33 - a23 * a31;\n var b11 = a22 * a33 - a23 * a32; // Calculate the determinant\n\n var det = b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;\n\n if (!det) {\n return null;\n }\n\n det = 1.0 / det;\n out[0] = (a11 * b11 - a12 * b10 + a13 * b09) * det;\n out[1] = (a02 * b10 - a01 * b11 - a03 * b09) * det;\n out[2] = (a31 * b05 - a32 * b04 + a33 * b03) * det;\n out[3] = (a22 * b04 - a21 * b05 - a23 * b03) * det;\n out[4] = (a12 * b08 - a10 * b11 - a13 * b07) * det;\n out[5] = (a00 * b11 - a02 * b08 + a03 * b07) * det;\n out[6] = (a32 * b02 - a30 * b05 - a33 * b01) * det;\n out[7] = (a20 * b05 - a22 * b02 + a23 * b01) * det;\n out[8] = (a10 * b10 - a11 * b08 + a13 * b06) * det;\n out[9] = (a01 * b08 - a00 * b10 - a03 * b06) * det;\n out[10] = (a30 * b04 - a31 * b02 + a33 * b00) * det;\n out[11] = (a21 * b02 - a20 * b04 - a23 * b00) * det;\n out[12] = (a11 * b07 - a10 * b09 - a12 * b06) * det;\n out[13] = (a00 * b09 - a01 * b07 + a02 * b06) * det;\n out[14] = (a31 * b01 - a30 * b03 - a32 * b00) * det;\n out[15] = (a20 * b03 - a21 * b01 + a22 * b00) * det;\n return out;\n}\n/**\n * Calculates the adjugate of a mat4\n *\n * @param {mat4} out the receiving matrix\n * @param {ReadonlyMat4} a the source matrix\n * @returns {mat4} out\n */\n\nexport function adjoint(out, a) {\n var a00 = a[0],\n a01 = a[1],\n a02 = a[2],\n a03 = a[3];\n var a10 = a[4],\n a11 = a[5],\n a12 = a[6],\n a13 = a[7];\n var a20 = a[8],\n a21 = a[9],\n a22 = a[10],\n a23 = a[11];\n var a30 = a[12],\n a31 = a[13],\n a32 = a[14],\n a33 = a[15];\n out[0] = a11 * (a22 * a33 - a23 * a32) - a21 * (a12 * a33 - a13 * a32) + a31 * (a12 * a23 - a13 * a22);\n out[1] = -(a01 * (a22 * a33 - a23 * a32) - a21 * (a02 * a33 - a03 * a32) + a31 * (a02 * a23 - a03 * a22));\n out[2] = a01 * (a12 * a33 - a13 * a32) - a11 * (a02 * a33 - a03 * a32) + a31 * (a02 * a13 - a03 * a12);\n out[3] = -(a01 * (a12 * a23 - a13 * a22) - a11 * (a02 * a23 - a03 * a22) + a21 * (a02 * a13 - a03 * a12));\n out[4] = -(a10 * (a22 * a33 - a23 * a32) - a20 * (a12 * a33 - a13 * a32) + a30 * (a12 * a23 - a13 * a22));\n out[5] = a00 * (a22 * a33 - a23 * a32) - a20 * (a02 * a33 - a03 * a32) + a30 * (a02 * a23 - a03 * a22);\n out[6] = -(a00 * (a12 * a33 - a13 * a32) - a10 * (a02 * a33 - a03 * a32) + a30 * (a02 * a13 - a03 * a12));\n out[7] = a00 * (a12 * a23 - a13 * a22) - a10 * (a02 * a23 - a03 * a22) + a20 * (a02 * a13 - a03 * a12);\n out[8] = a10 * (a21 * a33 - a23 * a31) - a20 * (a11 * a33 - a13 * a31) + a30 * (a11 * a23 - a13 * a21);\n out[9] = -(a00 * (a21 * a33 - a23 * a31) - a20 * (a01 * a33 - a03 * a31) + a30 * (a01 * a23 - a03 * a21));\n out[10] = a00 * (a11 * a33 - a13 * a31) - a10 * (a01 * a33 - a03 * a31) + a30 * (a01 * a13 - a03 * a11);\n out[11] = -(a00 * (a11 * a23 - a13 * a21) - a10 * (a01 * a23 - a03 * a21) + a20 * (a01 * a13 - a03 * a11));\n out[12] = -(a10 * (a21 * a32 - a22 * a31) - a20 * (a11 * a32 - a12 * a31) + a30 * (a11 * a22 - a12 * a21));\n out[13] = a00 * (a21 * a32 - a22 * a31) - a20 * (a01 * a32 - a02 * a31) + a30 * (a01 * a22 - a02 * a21);\n out[14] = -(a00 * (a11 * a32 - a12 * a31) - a10 * (a01 * a32 - a02 * a31) + a30 * (a01 * a12 - a02 * a11));\n out[15] = a00 * (a11 * a22 - a12 * a21) - a10 * (a01 * a22 - a02 * a21) + a20 * (a01 * a12 - a02 * a11);\n return out;\n}\n/**\n * Calculates the determinant of a mat4\n *\n * @param {ReadonlyMat4} a the source matrix\n * @returns {Number} determinant of a\n */\n\nexport function determinant(a) {\n var a00 = a[0],\n a01 = a[1],\n a02 = a[2],\n a03 = a[3];\n var a10 = a[4],\n a11 = a[5],\n a12 = a[6],\n a13 = a[7];\n var a20 = a[8],\n a21 = a[9],\n a22 = a[10],\n a23 = a[11];\n var a30 = a[12],\n a31 = a[13],\n a32 = a[14],\n a33 = a[15];\n var b00 = a00 * a11 - a01 * a10;\n var b01 = a00 * a12 - a02 * a10;\n var b02 = a00 * a13 - a03 * a10;\n var b03 = a01 * a12 - a02 * a11;\n var b04 = a01 * a13 - a03 * a11;\n var b05 = a02 * a13 - a03 * a12;\n var b06 = a20 * a31 - a21 * a30;\n var b07 = a20 * a32 - a22 * a30;\n var b08 = a20 * a33 - a23 * a30;\n var b09 = a21 * a32 - a22 * a31;\n var b10 = a21 * a33 - a23 * a31;\n var b11 = a22 * a33 - a23 * a32; // Calculate the determinant\n\n return b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;\n}\n/**\n * Multiplies two mat4s\n *\n * @param {mat4} out the receiving matrix\n * @param {ReadonlyMat4} a the first operand\n * @param {ReadonlyMat4} b the second operand\n * @returns {mat4} out\n */\n\nexport function multiply(out, a, b) {\n var a00 = a[0],\n a01 = a[1],\n a02 = a[2],\n a03 = a[3];\n var a10 = a[4],\n a11 = a[5],\n a12 = a[6],\n a13 = a[7];\n var a20 = a[8],\n a21 = a[9],\n a22 = a[10],\n a23 = a[11];\n var a30 = a[12],\n a31 = a[13],\n a32 = a[14],\n a33 = a[15]; // Cache only the current line of the second matrix\n\n var b0 = b[0],\n b1 = b[1],\n b2 = b[2],\n b3 = b[3];\n out[0] = b0 * a00 + b1 * a10 + b2 * a20 + b3 * a30;\n out[1] = b0 * a01 + b1 * a11 + b2 * a21 + b3 * a31;\n out[2] = b0 * a02 + b1 * a12 + b2 * a22 + b3 * a32;\n out[3] = b0 * a03 + b1 * a13 + b2 * a23 + b3 * a33;\n b0 = b[4];\n b1 = b[5];\n b2 = b[6];\n b3 = b[7];\n out[4] = b0 * a00 + b1 * a10 + b2 * a20 + b3 * a30;\n out[5] = b0 * a01 + b1 * a11 + b2 * a21 + b3 * a31;\n out[6] = b0 * a02 + b1 * a12 + b2 * a22 + b3 * a32;\n out[7] = b0 * a03 + b1 * a13 + b2 * a23 + b3 * a33;\n b0 = b[8];\n b1 = b[9];\n b2 = b[10];\n b3 = b[11];\n out[8] = b0 * a00 + b1 * a10 + b2 * a20 + b3 * a30;\n out[9] = b0 * a01 + b1 * a11 + b2 * a21 + b3 * a31;\n out[10] = b0 * a02 + b1 * a12 + b2 * a22 + b3 * a32;\n out[11] = b0 * a03 + b1 * a13 + b2 * a23 + b3 * a33;\n b0 = b[12];\n b1 = b[13];\n b2 = b[14];\n b3 = b[15];\n out[12] = b0 * a00 + b1 * a10 + b2 * a20 + b3 * a30;\n out[13] = b0 * a01 + b1 * a11 + b2 * a21 + b3 * a31;\n out[14] = b0 * a02 + b1 * a12 + b2 * a22 + b3 * a32;\n out[15] = b0 * a03 + b1 * a13 + b2 * a23 + b3 * a33;\n return out;\n}\n/**\n * Translate a mat4 by the given vector\n *\n * @param {mat4} out the receiving matrix\n * @param {ReadonlyMat4} a the matrix to translate\n * @param {ReadonlyVec3} v vector to translate by\n * @returns {mat4} out\n */\n\nexport function translate(out, a, v) {\n var x = v[0],\n y = v[1],\n z = v[2];\n var a00, a01, a02, a03;\n var a10, a11, a12, a13;\n var a20, a21, a22, a23;\n\n if (a === out) {\n out[12] = a[0] * x + a[4] * y + a[8] * z + a[12];\n out[13] = a[1] * x + a[5] * y + a[9] * z + a[13];\n out[14] = a[2] * x + a[6] * y + a[10] * z + a[14];\n out[15] = a[3] * x + a[7] * y + a[11] * z + a[15];\n } else {\n a00 = a[0];\n a01 = a[1];\n a02 = a[2];\n a03 = a[3];\n a10 = a[4];\n a11 = a[5];\n a12 = a[6];\n a13 = a[7];\n a20 = a[8];\n a21 = a[9];\n a22 = a[10];\n a23 = a[11];\n out[0] = a00;\n out[1] = a01;\n out[2] = a02;\n out[3] = a03;\n out[4] = a10;\n out[5] = a11;\n out[6] = a12;\n out[7] = a13;\n out[8] = a20;\n out[9] = a21;\n out[10] = a22;\n out[11] = a23;\n out[12] = a00 * x + a10 * y + a20 * z + a[12];\n out[13] = a01 * x + a11 * y + a21 * z + a[13];\n out[14] = a02 * x + a12 * y + a22 * z + a[14];\n out[15] = a03 * x + a13 * y + a23 * z + a[15];\n }\n\n return out;\n}\n/**\n * Scales the mat4 by the dimensions in the given vec3 not using vectorization\n *\n * @param {mat4} out the receiving matrix\n * @param {ReadonlyMat4} a the matrix to scale\n * @param {ReadonlyVec3} v the vec3 to scale the matrix by\n * @returns {mat4} out\n **/\n\nexport function scale(out, a, v) {\n var x = v[0],\n y = v[1],\n z = v[2];\n out[0] = a[0] * x;\n out[1] = a[1] * x;\n out[2] = a[2] * x;\n out[3] = a[3] * x;\n out[4] = a[4] * y;\n out[5] = a[5] * y;\n out[6] = a[6] * y;\n out[7] = a[7] * y;\n out[8] = a[8] * z;\n out[9] = a[9] * z;\n out[10] = a[10] * z;\n out[11] = a[11] * z;\n out[12] = a[12];\n out[13] = a[13];\n out[14] = a[14];\n out[15] = a[15];\n return out;\n}\n/**\n * Rotates a mat4 by the given angle around the given axis\n *\n * @param {mat4} out the receiving matrix\n * @param {ReadonlyMat4} a the matrix to rotate\n * @param {Number} rad the angle to rotate the matrix by\n * @param {ReadonlyVec3} axis the axis to rotate around\n * @returns {mat4} out\n */\n\nexport function rotate(out, a, rad, axis) {\n var x = axis[0],\n y = axis[1],\n z = axis[2];\n var len = Math.hypot(x, y, z);\n var s, c, t;\n var a00, a01, a02, a03;\n var a10, a11, a12, a13;\n var a20, a21, a22, a23;\n var b00, b01, b02;\n var b10, b11, b12;\n var b20, b21, b22;\n\n if (len < glMatrix.EPSILON) {\n return null;\n }\n\n len = 1 / len;\n x *= len;\n y *= len;\n z *= len;\n s = Math.sin(rad);\n c = Math.cos(rad);\n t = 1 - c;\n a00 = a[0];\n a01 = a[1];\n a02 = a[2];\n a03 = a[3];\n a10 = a[4];\n a11 = a[5];\n a12 = a[6];\n a13 = a[7];\n a20 = a[8];\n a21 = a[9];\n a22 = a[10];\n a23 = a[11]; // Construct the elements of the rotation matrix\n\n b00 = x * x * t + c;\n b01 = y * x * t + z * s;\n b02 = z * x * t - y * s;\n b10 = x * y * t - z * s;\n b11 = y * y * t + c;\n b12 = z * y * t + x * s;\n b20 = x * z * t + y * s;\n b21 = y * z * t - x * s;\n b22 = z * z * t + c; // Perform rotation-specific matrix multiplication\n\n out[0] = a00 * b00 + a10 * b01 + a20 * b02;\n out[1] = a01 * b00 + a11 * b01 + a21 * b02;\n out[2] = a02 * b00 + a12 * b01 + a22 * b02;\n out[3] = a03 * b00 + a13 * b01 + a23 * b02;\n out[4] = a00 * b10 + a10 * b11 + a20 * b12;\n out[5] = a01 * b10 + a11 * b11 + a21 * b12;\n out[6] = a02 * b10 + a12 * b11 + a22 * b12;\n out[7] = a03 * b10 + a13 * b11 + a23 * b12;\n out[8] = a00 * b20 + a10 * b21 + a20 * b22;\n out[9] = a01 * b20 + a11 * b21 + a21 * b22;\n out[10] = a02 * b20 + a12 * b21 + a22 * b22;\n out[11] = a03 * b20 + a13 * b21 + a23 * b22;\n\n if (a !== out) {\n // If the source and destination differ, copy the unchanged last row\n out[12] = a[12];\n out[13] = a[13];\n out[14] = a[14];\n out[15] = a[15];\n }\n\n return out;\n}\n/**\n * Rotates a matrix by the given angle around the X axis\n *\n * @param {mat4} out the receiving matrix\n * @param {ReadonlyMat4} a the matrix to rotate\n * @param {Number} rad the angle to rotate the matrix by\n * @returns {mat4} out\n */\n\nexport function rotateX(out, a, rad) {\n var s = Math.sin(rad);\n var c = Math.cos(rad);\n var a10 = a[4];\n var a11 = a[5];\n var a12 = a[6];\n var a13 = a[7];\n var a20 = a[8];\n var a21 = a[9];\n var a22 = a[10];\n var a23 = a[11];\n\n if (a !== out) {\n // If the source and destination differ, copy the unchanged rows\n out[0] = a[0];\n out[1] = a[1];\n out[2] = a[2];\n out[3] = a[3];\n out[12] = a[12];\n out[13] = a[13];\n out[14] = a[14];\n out[15] = a[15];\n } // Perform axis-specific matrix multiplication\n\n\n out[4] = a10 * c + a20 * s;\n out[5] = a11 * c + a21 * s;\n out[6] = a12 * c + a22 * s;\n out[7] = a13 * c + a23 * s;\n out[8] = a20 * c - a10 * s;\n out[9] = a21 * c - a11 * s;\n out[10] = a22 * c - a12 * s;\n out[11] = a23 * c - a13 * s;\n return out;\n}\n/**\n * Rotates a matrix by the given angle around the Y axis\n *\n * @param {mat4} out the receiving matrix\n * @param {ReadonlyMat4} a the matrix to rotate\n * @param {Number} rad the angle to rotate the matrix by\n * @returns {mat4} out\n */\n\nexport function rotateY(out, a, rad) {\n var s = Math.sin(rad);\n var c = Math.cos(rad);\n var a00 = a[0];\n var a01 = a[1];\n var a02 = a[2];\n var a03 = a[3];\n var a20 = a[8];\n var a21 = a[9];\n var a22 = a[10];\n var a23 = a[11];\n\n if (a !== out) {\n // If the source and destination differ, copy the unchanged rows\n out[4] = a[4];\n out[5] = a[5];\n out[6] = a[6];\n out[7] = a[7];\n out[12] = a[12];\n out[13] = a[13];\n out[14] = a[14];\n out[15] = a[15];\n } // Perform axis-specific matrix multiplication\n\n\n out[0] = a00 * c - a20 * s;\n out[1] = a01 * c - a21 * s;\n out[2] = a02 * c - a22 * s;\n out[3] = a03 * c - a23 * s;\n out[8] = a00 * s + a20 * c;\n out[9] = a01 * s + a21 * c;\n out[10] = a02 * s + a22 * c;\n out[11] = a03 * s + a23 * c;\n return out;\n}\n/**\n * Rotates a matrix by the given angle around the Z axis\n *\n * @param {mat4} out the receiving matrix\n * @param {ReadonlyMat4} a the matrix to rotate\n * @param {Number} rad the angle to rotate the matrix by\n * @returns {mat4} out\n */\n\nexport function rotateZ(out, a, rad) {\n var s = Math.sin(rad);\n var c = Math.cos(rad);\n var a00 = a[0];\n var a01 = a[1];\n var a02 = a[2];\n var a03 = a[3];\n var a10 = a[4];\n var a11 = a[5];\n var a12 = a[6];\n var a13 = a[7];\n\n if (a !== out) {\n // If the source and destination differ, copy the unchanged last row\n out[8] = a[8];\n out[9] = a[9];\n out[10] = a[10];\n out[11] = a[11];\n out[12] = a[12];\n out[13] = a[13];\n out[14] = a[14];\n out[15] = a[15];\n } // Perform axis-specific matrix multiplication\n\n\n out[0] = a00 * c + a10 * s;\n out[1] = a01 * c + a11 * s;\n out[2] = a02 * c + a12 * s;\n out[3] = a03 * c + a13 * s;\n out[4] = a10 * c - a00 * s;\n out[5] = a11 * c - a01 * s;\n out[6] = a12 * c - a02 * s;\n out[7] = a13 * c - a03 * s;\n return out;\n}\n/**\n * Creates a matrix from a vector translation\n * This is equivalent to (but much faster than):\n *\n * mat4.identity(dest);\n * mat4.translate(dest, dest, vec);\n *\n * @param {mat4} out mat4 receiving operation result\n * @param {ReadonlyVec3} v Translation vector\n * @returns {mat4} out\n */\n\nexport function fromTranslation(out, v) {\n out[0] = 1;\n out[1] = 0;\n out[2] = 0;\n out[3] = 0;\n out[4] = 0;\n out[5] = 1;\n out[6] = 0;\n out[7] = 0;\n out[8] = 0;\n out[9] = 0;\n out[10] = 1;\n out[11] = 0;\n out[12] = v[0];\n out[13] = v[1];\n out[14] = v[2];\n out[15] = 1;\n return out;\n}\n/**\n * Creates a matrix from a vector scaling\n * This is equivalent to (but much faster than):\n *\n * mat4.identity(dest);\n * mat4.scale(dest, dest, vec);\n *\n * @param {mat4} out mat4 receiving operation result\n * @param {ReadonlyVec3} v Scaling vector\n * @returns {mat4} out\n */\n\nexport function fromScaling(out, v) {\n out[0] = v[0];\n out[1] = 0;\n out[2] = 0;\n out[3] = 0;\n out[4] = 0;\n out[5] = v[1];\n out[6] = 0;\n out[7] = 0;\n out[8] = 0;\n out[9] = 0;\n out[10] = v[2];\n out[11] = 0;\n out[12] = 0;\n out[13] = 0;\n out[14] = 0;\n out[15] = 1;\n return out;\n}\n/**\n * Creates a matrix from a given angle around a given axis\n * This is equivalent to (but much faster than):\n *\n * mat4.identity(dest);\n * mat4.rotate(dest, dest, rad, axis);\n *\n * @param {mat4} out mat4 receiving operation result\n * @param {Number} rad the angle to rotate the matrix by\n * @param {ReadonlyVec3} axis the axis to rotate around\n * @returns {mat4} out\n */\n\nexport function fromRotation(out, rad, axis) {\n var x = axis[0],\n y = axis[1],\n z = axis[2];\n var len = Math.hypot(x, y, z);\n var s, c, t;\n\n if (len < glMatrix.EPSILON) {\n return null;\n }\n\n len = 1 / len;\n x *= len;\n y *= len;\n z *= len;\n s = Math.sin(rad);\n c = Math.cos(rad);\n t = 1 - c; // Perform rotation-specific matrix multiplication\n\n out[0] = x * x * t + c;\n out[1] = y * x * t + z * s;\n out[2] = z * x * t - y * s;\n out[3] = 0;\n out[4] = x * y * t - z * s;\n out[5] = y * y * t + c;\n out[6] = z * y * t + x * s;\n out[7] = 0;\n out[8] = x * z * t + y * s;\n out[9] = y * z * t - x * s;\n out[10] = z * z * t + c;\n out[11] = 0;\n out[12] = 0;\n out[13] = 0;\n out[14] = 0;\n out[15] = 1;\n return out;\n}\n/**\n * Creates a matrix from the given angle around the X axis\n * This is equivalent to (but much faster than):\n *\n * mat4.identity(dest);\n * mat4.rotateX(dest, dest, rad);\n *\n * @param {mat4} out mat4 receiving operation result\n * @param {Number} rad the angle to rotate the matrix by\n * @returns {mat4} out\n */\n\nexport function fromXRotation(out, rad) {\n var s = Math.sin(rad);\n var c = Math.cos(rad); // Perform axis-specific matrix multiplication\n\n out[0] = 1;\n out[1] = 0;\n out[2] = 0;\n out[3] = 0;\n out[4] = 0;\n out[5] = c;\n out[6] = s;\n out[7] = 0;\n out[8] = 0;\n out[9] = -s;\n out[10] = c;\n out[11] = 0;\n out[12] = 0;\n out[13] = 0;\n out[14] = 0;\n out[15] = 1;\n return out;\n}\n/**\n * Creates a matrix from the given angle around the Y axis\n * This is equivalent to (but much faster than):\n *\n * mat4.identity(dest);\n * mat4.rotateY(dest, dest, rad);\n *\n * @param {mat4} out mat4 receiving operation result\n * @param {Number} rad the angle to rotate the matrix by\n * @returns {mat4} out\n */\n\nexport function fromYRotation(out, rad) {\n var s = Math.sin(rad);\n var c = Math.cos(rad); // Perform axis-specific matrix multiplication\n\n out[0] = c;\n out[1] = 0;\n out[2] = -s;\n out[3] = 0;\n out[4] = 0;\n out[5] = 1;\n out[6] = 0;\n out[7] = 0;\n out[8] = s;\n out[9] = 0;\n out[10] = c;\n out[11] = 0;\n out[12] = 0;\n out[13] = 0;\n out[14] = 0;\n out[15] = 1;\n return out;\n}\n/**\n * Creates a matrix from the given angle around the Z axis\n * This is equivalent to (but much faster than):\n *\n * mat4.identity(dest);\n * mat4.rotateZ(dest, dest, rad);\n *\n * @param {mat4} out mat4 receiving operation result\n * @param {Number} rad the angle to rotate the matrix by\n * @returns {mat4} out\n */\n\nexport function fromZRotation(out, rad) {\n var s = Math.sin(rad);\n var c = Math.cos(rad); // Perform axis-specific matrix multiplication\n\n out[0] = c;\n out[1] = s;\n out[2] = 0;\n out[3] = 0;\n out[4] = -s;\n out[5] = c;\n out[6] = 0;\n out[7] = 0;\n out[8] = 0;\n out[9] = 0;\n out[10] = 1;\n out[11] = 0;\n out[12] = 0;\n out[13] = 0;\n out[14] = 0;\n out[15] = 1;\n return out;\n}\n/**\n * Creates a matrix from a quaternion rotation and vector translation\n * This is equivalent to (but much faster than):\n *\n * mat4.identity(dest);\n * mat4.translate(dest, vec);\n * let quatMat = mat4.create();\n * quat4.toMat4(quat, quatMat);\n * mat4.multiply(dest, quatMat);\n *\n * @param {mat4} out mat4 receiving operation result\n * @param {quat4} q Rotation quaternion\n * @param {ReadonlyVec3} v Translation vector\n * @returns {mat4} out\n */\n\nexport function fromRotationTranslation(out, q, v) {\n // Quaternion math\n var x = q[0],\n y = q[1],\n z = q[2],\n w = q[3];\n var x2 = x + x;\n var y2 = y + y;\n var z2 = z + z;\n var xx = x * x2;\n var xy = x * y2;\n var xz = x * z2;\n var yy = y * y2;\n var yz = y * z2;\n var zz = z * z2;\n var wx = w * x2;\n var wy = w * y2;\n var wz = w * z2;\n out[0] = 1 - (yy + zz);\n out[1] = xy + wz;\n out[2] = xz - wy;\n out[3] = 0;\n out[4] = xy - wz;\n out[5] = 1 - (xx + zz);\n out[6] = yz + wx;\n out[7] = 0;\n out[8] = xz + wy;\n out[9] = yz - wx;\n out[10] = 1 - (xx + yy);\n out[11] = 0;\n out[12] = v[0];\n out[13] = v[1];\n out[14] = v[2];\n out[15] = 1;\n return out;\n}\n/**\n * Creates a new mat4 from a dual quat.\n *\n * @param {mat4} out Matrix\n * @param {ReadonlyQuat2} a Dual Quaternion\n * @returns {mat4} mat4 receiving operation result\n */\n\nexport function fromQuat2(out, a) {\n var translation = new glMatrix.ARRAY_TYPE(3);\n var bx = -a[0],\n by = -a[1],\n bz = -a[2],\n bw = a[3],\n ax = a[4],\n ay = a[5],\n az = a[6],\n aw = a[7];\n var magnitude = bx * bx + by * by + bz * bz + bw * bw; //Only scale if it makes sense\n\n if (magnitude > 0) {\n translation[0] = (ax * bw + aw * bx + ay * bz - az * by) * 2 / magnitude;\n translation[1] = (ay * bw + aw * by + az * bx - ax * bz) * 2 / magnitude;\n translation[2] = (az * bw + aw * bz + ax * by - ay * bx) * 2 / magnitude;\n } else {\n translation[0] = (ax * bw + aw * bx + ay * bz - az * by) * 2;\n translation[1] = (ay * bw + aw * by + az * bx - ax * bz) * 2;\n translation[2] = (az * bw + aw * bz + ax * by - ay * bx) * 2;\n }\n\n fromRotationTranslation(out, a, translation);\n return out;\n}\n/**\n * Returns the translation vector component of a transformation\n * matrix. If a matrix is built with fromRotationTranslation,\n * the returned vector will be the same as the translation vector\n * originally supplied.\n * @param {vec3} out Vector to receive translation component\n * @param {ReadonlyMat4} mat Matrix to be decomposed (input)\n * @return {vec3} out\n */\n\nexport function getTranslation(out, mat) {\n out[0] = mat[12];\n out[1] = mat[13];\n out[2] = mat[14];\n return out;\n}\n/**\n * Returns the scaling factor component of a transformation\n * matrix. If a matrix is built with fromRotationTranslationScale\n * with a normalized Quaternion paramter, the returned vector will be\n * the same as the scaling vector\n * originally supplied.\n * @param {vec3} out Vector to receive scaling factor component\n * @param {ReadonlyMat4} mat Matrix to be decomposed (input)\n * @return {vec3} out\n */\n\nexport function getScaling(out, mat) {\n var m11 = mat[0];\n var m12 = mat[1];\n var m13 = mat[2];\n var m21 = mat[4];\n var m22 = mat[5];\n var m23 = mat[6];\n var m31 = mat[8];\n var m32 = mat[9];\n var m33 = mat[10];\n out[0] = Math.hypot(m11, m12, m13);\n out[1] = Math.hypot(m21, m22, m23);\n out[2] = Math.hypot(m31, m32, m33);\n return out;\n}\n/**\n * Returns a quaternion representing the rotational component\n * of a transformation matrix. If a matrix is built with\n * fromRotationTranslation, the returned quaternion will be the\n * same as the quaternion originally supplied.\n * @param {quat} out Quaternion to receive the rotation component\n * @param {ReadonlyMat4} mat Matrix to be decomposed (input)\n * @return {quat} out\n */\n\nexport function getRotation(out, mat) {\n var scaling = new glMatrix.ARRAY_TYPE(3);\n getScaling(scaling, mat);\n var is1 = 1 / scaling[0];\n var is2 = 1 / scaling[1];\n var is3 = 1 / scaling[2];\n var sm11 = mat[0] * is1;\n var sm12 = mat[1] * is2;\n var sm13 = mat[2] * is3;\n var sm21 = mat[4] * is1;\n var sm22 = mat[5] * is2;\n var sm23 = mat[6] * is3;\n var sm31 = mat[8] * is1;\n var sm32 = mat[9] * is2;\n var sm33 = mat[10] * is3;\n var trace = sm11 + sm22 + sm33;\n var S = 0;\n\n if (trace > 0) {\n S = Math.sqrt(trace + 1.0) * 2;\n out[3] = 0.25 * S;\n out[0] = (sm23 - sm32) / S;\n out[1] = (sm31 - sm13) / S;\n out[2] = (sm12 - sm21) / S;\n } else if (sm11 > sm22 && sm11 > sm33) {\n S = Math.sqrt(1.0 + sm11 - sm22 - sm33) * 2;\n out[3] = (sm23 - sm32) / S;\n out[0] = 0.25 * S;\n out[1] = (sm12 + sm21) / S;\n out[2] = (sm31 + sm13) / S;\n } else if (sm22 > sm33) {\n S = Math.sqrt(1.0 + sm22 - sm11 - sm33) * 2;\n out[3] = (sm31 - sm13) / S;\n out[0] = (sm12 + sm21) / S;\n out[1] = 0.25 * S;\n out[2] = (sm23 + sm32) / S;\n } else {\n S = Math.sqrt(1.0 + sm33 - sm11 - sm22) * 2;\n out[3] = (sm12 - sm21) / S;\n out[0] = (sm31 + sm13) / S;\n out[1] = (sm23 + sm32) / S;\n out[2] = 0.25 * S;\n }\n\n return out;\n}\n/**\n * Creates a matrix from a quaternion rotation, vector translation and vector scale\n * This is equivalent to (but much faster than):\n *\n * mat4.identity(dest);\n * mat4.translate(dest, vec);\n * let quatMat = mat4.create();\n * quat4.toMat4(quat, quatMat);\n * mat4.multiply(dest, quatMat);\n * mat4.scale(dest, scale)\n *\n * @param {mat4} out mat4 receiving operation result\n * @param {quat4} q Rotation quaternion\n * @param {ReadonlyVec3} v Translation vector\n * @param {ReadonlyVec3} s Scaling vector\n * @returns {mat4} out\n */\n\nexport function fromRotationTranslationScale(out, q, v, s) {\n // Quaternion math\n var x = q[0],\n y = q[1],\n z = q[2],\n w = q[3];\n var x2 = x + x;\n var y2 = y + y;\n var z2 = z + z;\n var xx = x * x2;\n var xy = x * y2;\n var xz = x * z2;\n var yy = y * y2;\n var yz = y * z2;\n var zz = z * z2;\n var wx = w * x2;\n var wy = w * y2;\n var wz = w * z2;\n var sx = s[0];\n var sy = s[1];\n var sz = s[2];\n out[0] = (1 - (yy + zz)) * sx;\n out[1] = (xy + wz) * sx;\n out[2] = (xz - wy) * sx;\n out[3] = 0;\n out[4] = (xy - wz) * sy;\n out[5] = (1 - (xx + zz)) * sy;\n out[6] = (yz + wx) * sy;\n out[7] = 0;\n out[8] = (xz + wy) * sz;\n out[9] = (yz - wx) * sz;\n out[10] = (1 - (xx + yy)) * sz;\n out[11] = 0;\n out[12] = v[0];\n out[13] = v[1];\n out[14] = v[2];\n out[15] = 1;\n return out;\n}\n/**\n * Creates a matrix from a quaternion rotation, vector translation and vector scale, rotating and scaling around the given origin\n * This is equivalent to (but much faster than):\n *\n * mat4.identity(dest);\n * mat4.translate(dest, vec);\n * mat4.translate(dest, origin);\n * let quatMat = mat4.create();\n * quat4.toMat4(quat, quatMat);\n * mat4.multiply(dest, quatMat);\n * mat4.scale(dest, scale)\n * mat4.translate(dest, negativeOrigin);\n *\n * @param {mat4} out mat4 receiving operation result\n * @param {quat4} q Rotation quaternion\n * @param {ReadonlyVec3} v Translation vector\n * @param {ReadonlyVec3} s Scaling vector\n * @param {ReadonlyVec3} o The origin vector around which to scale and rotate\n * @returns {mat4} out\n */\n\nexport function fromRotationTranslationScaleOrigin(out, q, v, s, o) {\n // Quaternion math\n var x = q[0],\n y = q[1],\n z = q[2],\n w = q[3];\n var x2 = x + x;\n var y2 = y + y;\n var z2 = z + z;\n var xx = x * x2;\n var xy = x * y2;\n var xz = x * z2;\n var yy = y * y2;\n var yz = y * z2;\n var zz = z * z2;\n var wx = w * x2;\n var wy = w * y2;\n var wz = w * z2;\n var sx = s[0];\n var sy = s[1];\n var sz = s[2];\n var ox = o[0];\n var oy = o[1];\n var oz = o[2];\n var out0 = (1 - (yy + zz)) * sx;\n var out1 = (xy + wz) * sx;\n var out2 = (xz - wy) * sx;\n var out4 = (xy - wz) * sy;\n var out5 = (1 - (xx + zz)) * sy;\n var out6 = (yz + wx) * sy;\n var out8 = (xz + wy) * sz;\n var out9 = (yz - wx) * sz;\n var out10 = (1 - (xx + yy)) * sz;\n out[0] = out0;\n out[1] = out1;\n out[2] = out2;\n out[3] = 0;\n out[4] = out4;\n out[5] = out5;\n out[6] = out6;\n out[7] = 0;\n out[8] = out8;\n out[9] = out9;\n out[10] = out10;\n out[11] = 0;\n out[12] = v[0] + ox - (out0 * ox + out4 * oy + out8 * oz);\n out[13] = v[1] + oy - (out1 * ox + out5 * oy + out9 * oz);\n out[14] = v[2] + oz - (out2 * ox + out6 * oy + out10 * oz);\n out[15] = 1;\n return out;\n}\n/**\n * Calculates a 4x4 matrix from the given quaternion\n *\n * @param {mat4} out mat4 receiving operation result\n * @param {ReadonlyQuat} q Quaternion to create matrix from\n *\n * @returns {mat4} out\n */\n\nexport function fromQuat(out, q) {\n var x = q[0],\n y = q[1],\n z = q[2],\n w = q[3];\n var x2 = x + x;\n var y2 = y + y;\n var z2 = z + z;\n var xx = x * x2;\n var yx = y * x2;\n var yy = y * y2;\n var zx = z * x2;\n var zy = z * y2;\n var zz = z * z2;\n var wx = w * x2;\n var wy = w * y2;\n var wz = w * z2;\n out[0] = 1 - yy - zz;\n out[1] = yx + wz;\n out[2] = zx - wy;\n out[3] = 0;\n out[4] = yx - wz;\n out[5] = 1 - xx - zz;\n out[6] = zy + wx;\n out[7] = 0;\n out[8] = zx + wy;\n out[9] = zy - wx;\n out[10] = 1 - xx - yy;\n out[11] = 0;\n out[12] = 0;\n out[13] = 0;\n out[14] = 0;\n out[15] = 1;\n return out;\n}\n/**\n * Generates a frustum matrix with the given bounds\n *\n * @param {mat4} out mat4 frustum matrix will be written into\n * @param {Number} left Left bound of the frustum\n * @param {Number} right Right bound of the frustum\n * @param {Number} bottom Bottom bound of the frustum\n * @param {Number} top Top bound of the frustum\n * @param {Number} near Near bound of the frustum\n * @param {Number} far Far bound of the frustum\n * @returns {mat4} out\n */\n\nexport function frustum(out, left, right, bottom, top, near, far) {\n var rl = 1 / (right - left);\n var tb = 1 / (top - bottom);\n var nf = 1 / (near - far);\n out[0] = near * 2 * rl;\n out[1] = 0;\n out[2] = 0;\n out[3] = 0;\n out[4] = 0;\n out[5] = near * 2 * tb;\n out[6] = 0;\n out[7] = 0;\n out[8] = (right + left) * rl;\n out[9] = (top + bottom) * tb;\n out[10] = (far + near) * nf;\n out[11] = -1;\n out[12] = 0;\n out[13] = 0;\n out[14] = far * near * 2 * nf;\n out[15] = 0;\n return out;\n}\n/**\n * Generates a perspective projection matrix with the given bounds.\n * The near/far clip planes correspond to a normalized device coordinate Z range of [-1, 1],\n * which matches WebGL/OpenGL's clip volume.\n * Passing null/undefined/no value for far will generate infinite projection matrix.\n *\n * @param {mat4} out mat4 frustum matrix will be written into\n * @param {number} fovy Vertical field of view in radians\n * @param {number} aspect Aspect ratio. typically viewport width/height\n * @param {number} near Near bound of the frustum\n * @param {number} far Far bound of the frustum, can be null or Infinity\n * @returns {mat4} out\n */\n\nexport function perspectiveNO(out, fovy, aspect, near, far) {\n var f = 1.0 / Math.tan(fovy / 2),\n nf;\n out[0] = f / aspect;\n out[1] = 0;\n out[2] = 0;\n out[3] = 0;\n out[4] = 0;\n out[5] = f;\n out[6] = 0;\n out[7] = 0;\n out[8] = 0;\n out[9] = 0;\n out[11] = -1;\n out[12] = 0;\n out[13] = 0;\n out[15] = 0;\n\n if (far != null && far !== Infinity) {\n nf = 1 / (near - far);\n out[10] = (far + near) * nf;\n out[14] = 2 * far * near * nf;\n } else {\n out[10] = -1;\n out[14] = -2 * near;\n }\n\n return out;\n}\n/**\n * Alias for {@link mat4.perspectiveNO}\n * @function\n */\n\nexport var perspective = perspectiveNO;\n/**\n * Generates a perspective projection matrix suitable for WebGPU with the given bounds.\n * The near/far clip planes correspond to a normalized device coordinate Z range of [0, 1],\n * which matches WebGPU/Vulkan/DirectX/Metal's clip volume.\n * Passing null/undefined/no value for far will generate infinite projection matrix.\n *\n * @param {mat4} out mat4 frustum matrix will be written into\n * @param {number} fovy Vertical field of view in radians\n * @param {number} aspect Aspect ratio. typically viewport width/height\n * @param {number} near Near bound of the frustum\n * @param {number} far Far bound of the frustum, can be null or Infinity\n * @returns {mat4} out\n */\n\nexport function perspectiveZO(out, fovy, aspect, near, far) {\n var f = 1.0 / Math.tan(fovy / 2),\n nf;\n out[0] = f / aspect;\n out[1] = 0;\n out[2] = 0;\n out[3] = 0;\n out[4] = 0;\n out[5] = f;\n out[6] = 0;\n out[7] = 0;\n out[8] = 0;\n out[9] = 0;\n out[11] = -1;\n out[12] = 0;\n out[13] = 0;\n out[15] = 0;\n\n if (far != null && far !== Infinity) {\n nf = 1 / (near - far);\n out[10] = far * nf;\n out[14] = far * near * nf;\n } else {\n out[10] = -1;\n out[14] = -near;\n }\n\n return out;\n}\n/**\n * Generates a perspective projection matrix with the given field of view.\n * This is primarily useful for generating projection matrices to be used\n * with the still experiemental WebVR API.\n *\n * @param {mat4} out mat4 frustum matrix will be written into\n * @param {Object} fov Object containing the following values: upDegrees, downDegrees, leftDegrees, rightDegrees\n * @param {number} near Near bound of the frustum\n * @param {number} far Far bound of the frustum\n * @returns {mat4} out\n */\n\nexport function perspectiveFromFieldOfView(out, fov, near, far) {\n var upTan = Math.tan(fov.upDegrees * Math.PI / 180.0);\n var downTan = Math.tan(fov.downDegrees * Math.PI / 180.0);\n var leftTan = Math.tan(fov.leftDegrees * Math.PI / 180.0);\n var rightTan = Math.tan(fov.rightDegrees * Math.PI / 180.0);\n var xScale = 2.0 / (leftTan + rightTan);\n var yScale = 2.0 / (upTan + downTan);\n out[0] = xScale;\n out[1] = 0.0;\n out[2] = 0.0;\n out[3] = 0.0;\n out[4] = 0.0;\n out[5] = yScale;\n out[6] = 0.0;\n out[7] = 0.0;\n out[8] = -((leftTan - rightTan) * xScale * 0.5);\n out[9] = (upTan - downTan) * yScale * 0.5;\n out[10] = far / (near - far);\n out[11] = -1.0;\n out[12] = 0.0;\n out[13] = 0.0;\n out[14] = far * near / (near - far);\n out[15] = 0.0;\n return out;\n}\n/**\n * Generates a orthogonal projection matrix with the given bounds.\n * The near/far clip planes correspond to a normalized device coordinate Z range of [-1, 1],\n * which matches WebGL/OpenGL's clip volume.\n *\n * @param {mat4} out mat4 frustum matrix will be written into\n * @param {number} left Left bound of the frustum\n * @param {number} right Right bound of the frustum\n * @param {number} bottom Bottom bound of the frustum\n * @param {number} top Top bound of the frustum\n * @param {number} near Near bound of the frustum\n * @param {number} far Far bound of the frustum\n * @returns {mat4} out\n */\n\nexport function orthoNO(out, left, right, bottom, top, near, far) {\n var lr = 1 / (left - right);\n var bt = 1 / (bottom - top);\n var nf = 1 / (near - far);\n out[0] = -2 * lr;\n out[1] = 0;\n out[2] = 0;\n out[3] = 0;\n out[4] = 0;\n out[5] = -2 * bt;\n out[6] = 0;\n out[7] = 0;\n out[8] = 0;\n out[9] = 0;\n out[10] = 2 * nf;\n out[11] = 0;\n out[12] = (left + right) * lr;\n out[13] = (top + bottom) * bt;\n out[14] = (far + near) * nf;\n out[15] = 1;\n return out;\n}\n/**\n * Alias for {@link mat4.orthoNO}\n * @function\n */\n\nexport var ortho = orthoNO;\n/**\n * Generates a orthogonal projection matrix with the given bounds.\n * The near/far clip planes correspond to a normalized device coordinate Z range of [0, 1],\n * which matches WebGPU/Vulkan/DirectX/Metal's clip volume.\n *\n * @param {mat4} out mat4 frustum matrix will be written into\n * @param {number} left Left bound of the frustum\n * @param {number} right Right bound of the frustum\n * @param {number} bottom Bottom bound of the frustum\n * @param {number} top Top bound of the frustum\n * @param {number} near Near bound of the frustum\n * @param {number} far Far bound of the frustum\n * @returns {mat4} out\n */\n\nexport function orthoZO(out, left, right, bottom, top, near, far) {\n var lr = 1 / (left - right);\n var bt = 1 / (bottom - top);\n var nf = 1 / (near - far);\n out[0] = -2 * lr;\n out[1] = 0;\n out[2] = 0;\n out[3] = 0;\n out[4] = 0;\n out[5] = -2 * bt;\n out[6] = 0;\n out[7] = 0;\n out[8] = 0;\n out[9] = 0;\n out[10] = nf;\n out[11] = 0;\n out[12] = (left + right) * lr;\n out[13] = (top + bottom) * bt;\n out[14] = near * nf;\n out[15] = 1;\n return out;\n}\n/**\n * Generates a look-at matrix with the given eye position, focal point, and up axis.\n * If you want a matrix that actually makes an object look at another object, you should use targetTo instead.\n *\n * @param {mat4} out mat4 frustum matrix will be written into\n * @param {ReadonlyVec3} eye Position of the viewer\n * @param {ReadonlyVec3} center Point the viewer is looking at\n * @param {ReadonlyVec3} up vec3 pointing up\n * @returns {mat4} out\n */\n\nexport function lookAt(out, eye, center, up) {\n var x0, x1, x2, y0, y1, y2, z0, z1, z2, len;\n var eyex = eye[0];\n var eyey = eye[1];\n var eyez = eye[2];\n var upx = up[0];\n var upy = up[1];\n var upz = up[2];\n var centerx = center[0];\n var centery = center[1];\n var centerz = center[2];\n\n if (Math.abs(eyex - centerx) < glMatrix.EPSILON && Math.abs(eyey - centery) < glMatrix.EPSILON && Math.abs(eyez - centerz) < glMatrix.EPSILON) {\n return identity(out);\n }\n\n z0 = eyex - centerx;\n z1 = eyey - centery;\n z2 = eyez - centerz;\n len = 1 / Math.hypot(z0, z1, z2);\n z0 *= len;\n z1 *= len;\n z2 *= len;\n x0 = upy * z2 - upz * z1;\n x1 = upz * z0 - upx * z2;\n x2 = upx * z1 - upy * z0;\n len = Math.hypot(x0, x1, x2);\n\n if (!len) {\n x0 = 0;\n x1 = 0;\n x2 = 0;\n } else {\n len = 1 / len;\n x0 *= len;\n x1 *= len;\n x2 *= len;\n }\n\n y0 = z1 * x2 - z2 * x1;\n y1 = z2 * x0 - z0 * x2;\n y2 = z0 * x1 - z1 * x0;\n len = Math.hypot(y0, y1, y2);\n\n if (!len) {\n y0 = 0;\n y1 = 0;\n y2 = 0;\n } else {\n len = 1 / len;\n y0 *= len;\n y1 *= len;\n y2 *= len;\n }\n\n out[0] = x0;\n out[1] = y0;\n out[2] = z0;\n out[3] = 0;\n out[4] = x1;\n out[5] = y1;\n out[6] = z1;\n out[7] = 0;\n out[8] = x2;\n out[9] = y2;\n out[10] = z2;\n out[11] = 0;\n out[12] = -(x0 * eyex + x1 * eyey + x2 * eyez);\n out[13] = -(y0 * eyex + y1 * eyey + y2 * eyez);\n out[14] = -(z0 * eyex + z1 * eyey + z2 * eyez);\n out[15] = 1;\n return out;\n}\n/**\n * Generates a matrix that makes something look at something else.\n *\n * @param {mat4} out mat4 frustum matrix will be written into\n * @param {ReadonlyVec3} eye Position of the viewer\n * @param {ReadonlyVec3} center Point the viewer is looking at\n * @param {ReadonlyVec3} up vec3 pointing up\n * @returns {mat4} out\n */\n\nexport function targetTo(out, eye, target, up) {\n var eyex = eye[0],\n eyey = eye[1],\n eyez = eye[2],\n upx = up[0],\n upy = up[1],\n upz = up[2];\n var z0 = eyex - target[0],\n z1 = eyey - target[1],\n z2 = eyez - target[2];\n var len = z0 * z0 + z1 * z1 + z2 * z2;\n\n if (len > 0) {\n len = 1 / Math.sqrt(len);\n z0 *= len;\n z1 *= len;\n z2 *= len;\n }\n\n var x0 = upy * z2 - upz * z1,\n x1 = upz * z0 - upx * z2,\n x2 = upx * z1 - upy * z0;\n len = x0 * x0 + x1 * x1 + x2 * x2;\n\n if (len > 0) {\n len = 1 / Math.sqrt(len);\n x0 *= len;\n x1 *= len;\n x2 *= len;\n }\n\n out[0] = x0;\n out[1] = x1;\n out[2] = x2;\n out[3] = 0;\n out[4] = z1 * x2 - z2 * x1;\n out[5] = z2 * x0 - z0 * x2;\n out[6] = z0 * x1 - z1 * x0;\n out[7] = 0;\n out[8] = z0;\n out[9] = z1;\n out[10] = z2;\n out[11] = 0;\n out[12] = eyex;\n out[13] = eyey;\n out[14] = eyez;\n out[15] = 1;\n return out;\n}\n/**\n * Returns a string representation of a mat4\n *\n * @param {ReadonlyMat4} a matrix to represent as a string\n * @returns {String} string representation of the matrix\n */\n\nexport function str(a) {\n return \"mat4(\" + a[0] + \", \" + a[1] + \", \" + a[2] + \", \" + a[3] + \", \" + a[4] + \", \" + a[5] + \", \" + a[6] + \", \" + a[7] + \", \" + a[8] + \", \" + a[9] + \", \" + a[10] + \", \" + a[11] + \", \" + a[12] + \", \" + a[13] + \", \" + a[14] + \", \" + a[15] + \")\";\n}\n/**\n * Returns Frobenius norm of a mat4\n *\n * @param {ReadonlyMat4} a the matrix to calculate Frobenius norm of\n * @returns {Number} Frobenius norm\n */\n\nexport function frob(a) {\n return Math.hypot(a[0], a[1], a[2], a[3], a[4], a[5], a[6], a[7], a[8], a[9], a[10], a[11], a[12], a[13], a[14], a[15]);\n}\n/**\n * Adds two mat4's\n *\n * @param {mat4} out the receiving matrix\n * @param {ReadonlyMat4} a the first operand\n * @param {ReadonlyMat4} b the second operand\n * @returns {mat4} out\n */\n\nexport function add(out, a, b) {\n out[0] = a[0] + b[0];\n out[1] = a[1] + b[1];\n out[2] = a[2] + b[2];\n out[3] = a[3] + b[3];\n out[4] = a[4] + b[4];\n out[5] = a[5] + b[5];\n out[6] = a[6] + b[6];\n out[7] = a[7] + b[7];\n out[8] = a[8] + b[8];\n out[9] = a[9] + b[9];\n out[10] = a[10] + b[10];\n out[11] = a[11] + b[11];\n out[12] = a[12] + b[12];\n out[13] = a[13] + b[13];\n out[14] = a[14] + b[14];\n out[15] = a[15] + b[15];\n return out;\n}\n/**\n * Subtracts matrix b from matrix a\n *\n * @param {mat4} out the receiving matrix\n * @param {ReadonlyMat4} a the first operand\n * @param {ReadonlyMat4} b the second operand\n * @returns {mat4} out\n */\n\nexport function subtract(out, a, b) {\n out[0] = a[0] - b[0];\n out[1] = a[1] - b[1];\n out[2] = a[2] - b[2];\n out[3] = a[3] - b[3];\n out[4] = a[4] - b[4];\n out[5] = a[5] - b[5];\n out[6] = a[6] - b[6];\n out[7] = a[7] - b[7];\n out[8] = a[8] - b[8];\n out[9] = a[9] - b[9];\n out[10] = a[10] - b[10];\n out[11] = a[11] - b[11];\n out[12] = a[12] - b[12];\n out[13] = a[13] - b[13];\n out[14] = a[14] - b[14];\n out[15] = a[15] - b[15];\n return out;\n}\n/**\n * Multiply each element of the matrix by a scalar.\n *\n * @param {mat4} out the receiving matrix\n * @param {ReadonlyMat4} a the matrix to scale\n * @param {Number} b amount to scale the matrix's elements by\n * @returns {mat4} out\n */\n\nexport function multiplyScalar(out, a, b) {\n out[0] = a[0] * b;\n out[1] = a[1] * b;\n out[2] = a[2] * b;\n out[3] = a[3] * b;\n out[4] = a[4] * b;\n out[5] = a[5] * b;\n out[6] = a[6] * b;\n out[7] = a[7] * b;\n out[8] = a[8] * b;\n out[9] = a[9] * b;\n out[10] = a[10] * b;\n out[11] = a[11] * b;\n out[12] = a[12] * b;\n out[13] = a[13] * b;\n out[14] = a[14] * b;\n out[15] = a[15] * b;\n return out;\n}\n/**\n * Adds two mat4's after multiplying each element of the second operand by a scalar value.\n *\n * @param {mat4} out the receiving vector\n * @param {ReadonlyMat4} a the first operand\n * @param {ReadonlyMat4} b the second operand\n * @param {Number} scale the amount to scale b's elements by before adding\n * @returns {mat4} out\n */\n\nexport function multiplyScalarAndAdd(out, a, b, scale) {\n out[0] = a[0] + b[0] * scale;\n out[1] = a[1] + b[1] * scale;\n out[2] = a[2] + b[2] * scale;\n out[3] = a[3] + b[3] * scale;\n out[4] = a[4] + b[4] * scale;\n out[5] = a[5] + b[5] * scale;\n out[6] = a[6] + b[6] * scale;\n out[7] = a[7] + b[7] * scale;\n out[8] = a[8] + b[8] * scale;\n out[9] = a[9] + b[9] * scale;\n out[10] = a[10] + b[10] * scale;\n out[11] = a[11] + b[11] * scale;\n out[12] = a[12] + b[12] * scale;\n out[13] = a[13] + b[13] * scale;\n out[14] = a[14] + b[14] * scale;\n out[15] = a[15] + b[15] * scale;\n return out;\n}\n/**\n * Returns whether or not the matrices have exactly the same elements in the same position (when compared with ===)\n *\n * @param {ReadonlyMat4} a The first matrix.\n * @param {ReadonlyMat4} b The second matrix.\n * @returns {Boolean} True if the matrices are equal, false otherwise.\n */\n\nexport function exactEquals(a, b) {\n return a[0] === b[0] && a[1] === b[1] && a[2] === b[2] && a[3] === b[3] && a[4] === b[4] && a[5] === b[5] && a[6] === b[6] && a[7] === b[7] && a[8] === b[8] && a[9] === b[9] && a[10] === b[10] && a[11] === b[11] && a[12] === b[12] && a[13] === b[13] && a[14] === b[14] && a[15] === b[15];\n}\n/**\n * Returns whether or not the matrices have approximately the same elements in the same position.\n *\n * @param {ReadonlyMat4} a The first matrix.\n * @param {ReadonlyMat4} b The second matrix.\n * @returns {Boolean} True if the matrices are equal, false otherwise.\n */\n\nexport function equals(a, b) {\n var a0 = a[0],\n a1 = a[1],\n a2 = a[2],\n a3 = a[3];\n var a4 = a[4],\n a5 = a[5],\n a6 = a[6],\n a7 = a[7];\n var a8 = a[8],\n a9 = a[9],\n a10 = a[10],\n a11 = a[11];\n var a12 = a[12],\n a13 = a[13],\n a14 = a[14],\n a15 = a[15];\n var b0 = b[0],\n b1 = b[1],\n b2 = b[2],\n b3 = b[3];\n var b4 = b[4],\n b5 = b[5],\n b6 = b[6],\n b7 = b[7];\n var b8 = b[8],\n b9 = b[9],\n b10 = b[10],\n b11 = b[11];\n var b12 = b[12],\n b13 = b[13],\n b14 = b[14],\n b15 = b[15];\n return Math.abs(a0 - b0) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a0), Math.abs(b0)) && Math.abs(a1 - b1) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a1), Math.abs(b1)) && Math.abs(a2 - b2) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a2), Math.abs(b2)) && Math.abs(a3 - b3) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a3), Math.abs(b3)) && Math.abs(a4 - b4) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a4), Math.abs(b4)) && Math.abs(a5 - b5) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a5), Math.abs(b5)) && Math.abs(a6 - b6) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a6), Math.abs(b6)) && Math.abs(a7 - b7) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a7), Math.abs(b7)) && Math.abs(a8 - b8) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a8), Math.abs(b8)) && Math.abs(a9 - b9) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a9), Math.abs(b9)) && Math.abs(a10 - b10) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a10), Math.abs(b10)) && Math.abs(a11 - b11) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a11), Math.abs(b11)) && Math.abs(a12 - b12) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a12), Math.abs(b12)) && Math.abs(a13 - b13) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a13), Math.abs(b13)) && Math.abs(a14 - b14) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a14), Math.abs(b14)) && Math.abs(a15 - b15) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a15), Math.abs(b15));\n}\n/**\n * Alias for {@link mat4.multiply}\n * @function\n */\n\nexport var mul = multiply;\n/**\n * Alias for {@link mat4.subtract}\n * @function\n */\n\nexport var sub = subtract;","import * as glMatrix from \"./common.js\";\n/**\n * 3 Dimensional Vector\n * @module vec3\n */\n\n/**\n * Creates a new, empty vec3\n *\n * @returns {vec3} a new 3D vector\n */\n\nexport function create() {\n var out = new glMatrix.ARRAY_TYPE(3);\n\n if (glMatrix.ARRAY_TYPE != Float32Array) {\n out[0] = 0;\n out[1] = 0;\n out[2] = 0;\n }\n\n return out;\n}\n/**\n * Creates a new vec3 initialized with values from an existing vector\n *\n * @param {ReadonlyVec3} a vector to clone\n * @returns {vec3} a new 3D vector\n */\n\nexport function clone(a) {\n var out = new glMatrix.ARRAY_TYPE(3);\n out[0] = a[0];\n out[1] = a[1];\n out[2] = a[2];\n return out;\n}\n/**\n * Calculates the length of a vec3\n *\n * @param {ReadonlyVec3} a vector to calculate length of\n * @returns {Number} length of a\n */\n\nexport function length(a) {\n var x = a[0];\n var y = a[1];\n var z = a[2];\n return Math.hypot(x, y, z);\n}\n/**\n * Creates a new vec3 initialized with the given values\n *\n * @param {Number} x X component\n * @param {Number} y Y component\n * @param {Number} z Z component\n * @returns {vec3} a new 3D vector\n */\n\nexport function fromValues(x, y, z) {\n var out = new glMatrix.ARRAY_TYPE(3);\n out[0] = x;\n out[1] = y;\n out[2] = z;\n return out;\n}\n/**\n * Copy the values from one vec3 to another\n *\n * @param {vec3} out the receiving vector\n * @param {ReadonlyVec3} a the source vector\n * @returns {vec3} out\n */\n\nexport function copy(out, a) {\n out[0] = a[0];\n out[1] = a[1];\n out[2] = a[2];\n return out;\n}\n/**\n * Set the components of a vec3 to the given values\n *\n * @param {vec3} out the receiving vector\n * @param {Number} x X component\n * @param {Number} y Y component\n * @param {Number} z Z component\n * @returns {vec3} out\n */\n\nexport function set(out, x, y, z) {\n out[0] = x;\n out[1] = y;\n out[2] = z;\n return out;\n}\n/**\n * Adds two vec3's\n *\n * @param {vec3} out the receiving vector\n * @param {ReadonlyVec3} a the first operand\n * @param {ReadonlyVec3} b the second operand\n * @returns {vec3} out\n */\n\nexport function add(out, a, b) {\n out[0] = a[0] + b[0];\n out[1] = a[1] + b[1];\n out[2] = a[2] + b[2];\n return out;\n}\n/**\n * Subtracts vector b from vector a\n *\n * @param {vec3} out the receiving vector\n * @param {ReadonlyVec3} a the first operand\n * @param {ReadonlyVec3} b the second operand\n * @returns {vec3} out\n */\n\nexport function subtract(out, a, b) {\n out[0] = a[0] - b[0];\n out[1] = a[1] - b[1];\n out[2] = a[2] - b[2];\n return out;\n}\n/**\n * Multiplies two vec3's\n *\n * @param {vec3} out the receiving vector\n * @param {ReadonlyVec3} a the first operand\n * @param {ReadonlyVec3} b the second operand\n * @returns {vec3} out\n */\n\nexport function multiply(out, a, b) {\n out[0] = a[0] * b[0];\n out[1] = a[1] * b[1];\n out[2] = a[2] * b[2];\n return out;\n}\n/**\n * Divides two vec3's\n *\n * @param {vec3} out the receiving vector\n * @param {ReadonlyVec3} a the first operand\n * @param {ReadonlyVec3} b the second operand\n * @returns {vec3} out\n */\n\nexport function divide(out, a, b) {\n out[0] = a[0] / b[0];\n out[1] = a[1] / b[1];\n out[2] = a[2] / b[2];\n return out;\n}\n/**\n * Math.ceil the components of a vec3\n *\n * @param {vec3} out the receiving vector\n * @param {ReadonlyVec3} a vector to ceil\n * @returns {vec3} out\n */\n\nexport function ceil(out, a) {\n out[0] = Math.ceil(a[0]);\n out[1] = Math.ceil(a[1]);\n out[2] = Math.ceil(a[2]);\n return out;\n}\n/**\n * Math.floor the components of a vec3\n *\n * @param {vec3} out the receiving vector\n * @param {ReadonlyVec3} a vector to floor\n * @returns {vec3} out\n */\n\nexport function floor(out, a) {\n out[0] = Math.floor(a[0]);\n out[1] = Math.floor(a[1]);\n out[2] = Math.floor(a[2]);\n return out;\n}\n/**\n * Returns the minimum of two vec3's\n *\n * @param {vec3} out the receiving vector\n * @param {ReadonlyVec3} a the first operand\n * @param {ReadonlyVec3} b the second operand\n * @returns {vec3} out\n */\n\nexport function min(out, a, b) {\n out[0] = Math.min(a[0], b[0]);\n out[1] = Math.min(a[1], b[1]);\n out[2] = Math.min(a[2], b[2]);\n return out;\n}\n/**\n * Returns the maximum of two vec3's\n *\n * @param {vec3} out the receiving vector\n * @param {ReadonlyVec3} a the first operand\n * @param {ReadonlyVec3} b the second operand\n * @returns {vec3} out\n */\n\nexport function max(out, a, b) {\n out[0] = Math.max(a[0], b[0]);\n out[1] = Math.max(a[1], b[1]);\n out[2] = Math.max(a[2], b[2]);\n return out;\n}\n/**\n * Math.round the components of a vec3\n *\n * @param {vec3} out the receiving vector\n * @param {ReadonlyVec3} a vector to round\n * @returns {vec3} out\n */\n\nexport function round(out, a) {\n out[0] = Math.round(a[0]);\n out[1] = Math.round(a[1]);\n out[2] = Math.round(a[2]);\n return out;\n}\n/**\n * Scales a vec3 by a scalar number\n *\n * @param {vec3} out the receiving vector\n * @param {ReadonlyVec3} a the vector to scale\n * @param {Number} b amount to scale the vector by\n * @returns {vec3} out\n */\n\nexport function scale(out, a, b) {\n out[0] = a[0] * b;\n out[1] = a[1] * b;\n out[2] = a[2] * b;\n return out;\n}\n/**\n * Adds two vec3's after scaling the second operand by a scalar value\n *\n * @param {vec3} out the receiving vector\n * @param {ReadonlyVec3} a the first operand\n * @param {ReadonlyVec3} b the second operand\n * @param {Number} scale the amount to scale b by before adding\n * @returns {vec3} out\n */\n\nexport function scaleAndAdd(out, a, b, scale) {\n out[0] = a[0] + b[0] * scale;\n out[1] = a[1] + b[1] * scale;\n out[2] = a[2] + b[2] * scale;\n return out;\n}\n/**\n * Calculates the euclidian distance between two vec3's\n *\n * @param {ReadonlyVec3} a the first operand\n * @param {ReadonlyVec3} b the second operand\n * @returns {Number} distance between a and b\n */\n\nexport function distance(a, b) {\n var x = b[0] - a[0];\n var y = b[1] - a[1];\n var z = b[2] - a[2];\n return Math.hypot(x, y, z);\n}\n/**\n * Calculates the squared euclidian distance between two vec3's\n *\n * @param {ReadonlyVec3} a the first operand\n * @param {ReadonlyVec3} b the second operand\n * @returns {Number} squared distance between a and b\n */\n\nexport function squaredDistance(a, b) {\n var x = b[0] - a[0];\n var y = b[1] - a[1];\n var z = b[2] - a[2];\n return x * x + y * y + z * z;\n}\n/**\n * Calculates the squared length of a vec3\n *\n * @param {ReadonlyVec3} a vector to calculate squared length of\n * @returns {Number} squared length of a\n */\n\nexport function squaredLength(a) {\n var x = a[0];\n var y = a[1];\n var z = a[2];\n return x * x + y * y + z * z;\n}\n/**\n * Negates the components of a vec3\n *\n * @param {vec3} out the receiving vector\n * @param {ReadonlyVec3} a vector to negate\n * @returns {vec3} out\n */\n\nexport function negate(out, a) {\n out[0] = -a[0];\n out[1] = -a[1];\n out[2] = -a[2];\n return out;\n}\n/**\n * Returns the inverse of the components of a vec3\n *\n * @param {vec3} out the receiving vector\n * @param {ReadonlyVec3} a vector to invert\n * @returns {vec3} out\n */\n\nexport function inverse(out, a) {\n out[0] = 1.0 / a[0];\n out[1] = 1.0 / a[1];\n out[2] = 1.0 / a[2];\n return out;\n}\n/**\n * Normalize a vec3\n *\n * @param {vec3} out the receiving vector\n * @param {ReadonlyVec3} a vector to normalize\n * @returns {vec3} out\n */\n\nexport function normalize(out, a) {\n var x = a[0];\n var y = a[1];\n var z = a[2];\n var len = x * x + y * y + z * z;\n\n if (len > 0) {\n //TODO: evaluate use of glm_invsqrt here?\n len = 1 / Math.sqrt(len);\n }\n\n out[0] = a[0] * len;\n out[1] = a[1] * len;\n out[2] = a[2] * len;\n return out;\n}\n/**\n * Calculates the dot product of two vec3's\n *\n * @param {ReadonlyVec3} a the first operand\n * @param {ReadonlyVec3} b the second operand\n * @returns {Number} dot product of a and b\n */\n\nexport function dot(a, b) {\n return a[0] * b[0] + a[1] * b[1] + a[2] * b[2];\n}\n/**\n * Computes the cross product of two vec3's\n *\n * @param {vec3} out the receiving vector\n * @param {ReadonlyVec3} a the first operand\n * @param {ReadonlyVec3} b the second operand\n * @returns {vec3} out\n */\n\nexport function cross(out, a, b) {\n var ax = a[0],\n ay = a[1],\n az = a[2];\n var bx = b[0],\n by = b[1],\n bz = b[2];\n out[0] = ay * bz - az * by;\n out[1] = az * bx - ax * bz;\n out[2] = ax * by - ay * bx;\n return out;\n}\n/**\n * Performs a linear interpolation between two vec3's\n *\n * @param {vec3} out the receiving vector\n * @param {ReadonlyVec3} a the first operand\n * @param {ReadonlyVec3} b the second operand\n * @param {Number} t interpolation amount, in the range [0-1], between the two inputs\n * @returns {vec3} out\n */\n\nexport function lerp(out, a, b, t) {\n var ax = a[0];\n var ay = a[1];\n var az = a[2];\n out[0] = ax + t * (b[0] - ax);\n out[1] = ay + t * (b[1] - ay);\n out[2] = az + t * (b[2] - az);\n return out;\n}\n/**\n * Performs a hermite interpolation with two control points\n *\n * @param {vec3} out the receiving vector\n * @param {ReadonlyVec3} a the first operand\n * @param {ReadonlyVec3} b the second operand\n * @param {ReadonlyVec3} c the third operand\n * @param {ReadonlyVec3} d the fourth operand\n * @param {Number} t interpolation amount, in the range [0-1], between the two inputs\n * @returns {vec3} out\n */\n\nexport function hermite(out, a, b, c, d, t) {\n var factorTimes2 = t * t;\n var factor1 = factorTimes2 * (2 * t - 3) + 1;\n var factor2 = factorTimes2 * (t - 2) + t;\n var factor3 = factorTimes2 * (t - 1);\n var factor4 = factorTimes2 * (3 - 2 * t);\n out[0] = a[0] * factor1 + b[0] * factor2 + c[0] * factor3 + d[0] * factor4;\n out[1] = a[1] * factor1 + b[1] * factor2 + c[1] * factor3 + d[1] * factor4;\n out[2] = a[2] * factor1 + b[2] * factor2 + c[2] * factor3 + d[2] * factor4;\n return out;\n}\n/**\n * Performs a bezier interpolation with two control points\n *\n * @param {vec3} out the receiving vector\n * @param {ReadonlyVec3} a the first operand\n * @param {ReadonlyVec3} b the second operand\n * @param {ReadonlyVec3} c the third operand\n * @param {ReadonlyVec3} d the fourth operand\n * @param {Number} t interpolation amount, in the range [0-1], between the two inputs\n * @returns {vec3} out\n */\n\nexport function bezier(out, a, b, c, d, t) {\n var inverseFactor = 1 - t;\n var inverseFactorTimesTwo = inverseFactor * inverseFactor;\n var factorTimes2 = t * t;\n var factor1 = inverseFactorTimesTwo * inverseFactor;\n var factor2 = 3 * t * inverseFactorTimesTwo;\n var factor3 = 3 * factorTimes2 * inverseFactor;\n var factor4 = factorTimes2 * t;\n out[0] = a[0] * factor1 + b[0] * factor2 + c[0] * factor3 + d[0] * factor4;\n out[1] = a[1] * factor1 + b[1] * factor2 + c[1] * factor3 + d[1] * factor4;\n out[2] = a[2] * factor1 + b[2] * factor2 + c[2] * factor3 + d[2] * factor4;\n return out;\n}\n/**\n * Generates a random vector with the given scale\n *\n * @param {vec3} out the receiving vector\n * @param {Number} [scale] Length of the resulting vector. If ommitted, a unit vector will be returned\n * @returns {vec3} out\n */\n\nexport function random(out, scale) {\n scale = scale || 1.0;\n var r = glMatrix.RANDOM() * 2.0 * Math.PI;\n var z = glMatrix.RANDOM() * 2.0 - 1.0;\n var zScale = Math.sqrt(1.0 - z * z) * scale;\n out[0] = Math.cos(r) * zScale;\n out[1] = Math.sin(r) * zScale;\n out[2] = z * scale;\n return out;\n}\n/**\n * Transforms the vec3 with a mat4.\n * 4th vector component is implicitly '1'\n *\n * @param {vec3} out the receiving vector\n * @param {ReadonlyVec3} a the vector to transform\n * @param {ReadonlyMat4} m matrix to transform with\n * @returns {vec3} out\n */\n\nexport function transformMat4(out, a, m) {\n var x = a[0],\n y = a[1],\n z = a[2];\n var w = m[3] * x + m[7] * y + m[11] * z + m[15];\n w = w || 1.0;\n out[0] = (m[0] * x + m[4] * y + m[8] * z + m[12]) / w;\n out[1] = (m[1] * x + m[5] * y + m[9] * z + m[13]) / w;\n out[2] = (m[2] * x + m[6] * y + m[10] * z + m[14]) / w;\n return out;\n}\n/**\n * Transforms the vec3 with a mat3.\n *\n * @param {vec3} out the receiving vector\n * @param {ReadonlyVec3} a the vector to transform\n * @param {ReadonlyMat3} m the 3x3 matrix to transform with\n * @returns {vec3} out\n */\n\nexport function transformMat3(out, a, m) {\n var x = a[0],\n y = a[1],\n z = a[2];\n out[0] = x * m[0] + y * m[3] + z * m[6];\n out[1] = x * m[1] + y * m[4] + z * m[7];\n out[2] = x * m[2] + y * m[5] + z * m[8];\n return out;\n}\n/**\n * Transforms the vec3 with a quat\n * Can also be used for dual quaternions. (Multiply it with the real part)\n *\n * @param {vec3} out the receiving vector\n * @param {ReadonlyVec3} a the vector to transform\n * @param {ReadonlyQuat} q quaternion to transform with\n * @returns {vec3} out\n */\n\nexport function transformQuat(out, a, q) {\n // benchmarks: https://jsperf.com/quaternion-transform-vec3-implementations-fixed\n var qx = q[0],\n qy = q[1],\n qz = q[2],\n qw = q[3];\n var x = a[0],\n y = a[1],\n z = a[2]; // var qvec = [qx, qy, qz];\n // var uv = vec3.cross([], qvec, a);\n\n var uvx = qy * z - qz * y,\n uvy = qz * x - qx * z,\n uvz = qx * y - qy * x; // var uuv = vec3.cross([], qvec, uv);\n\n var uuvx = qy * uvz - qz * uvy,\n uuvy = qz * uvx - qx * uvz,\n uuvz = qx * uvy - qy * uvx; // vec3.scale(uv, uv, 2 * w);\n\n var w2 = qw * 2;\n uvx *= w2;\n uvy *= w2;\n uvz *= w2; // vec3.scale(uuv, uuv, 2);\n\n uuvx *= 2;\n uuvy *= 2;\n uuvz *= 2; // return vec3.add(out, a, vec3.add(out, uv, uuv));\n\n out[0] = x + uvx + uuvx;\n out[1] = y + uvy + uuvy;\n out[2] = z + uvz + uuvz;\n return out;\n}\n/**\n * Rotate a 3D vector around the x-axis\n * @param {vec3} out The receiving vec3\n * @param {ReadonlyVec3} a The vec3 point to rotate\n * @param {ReadonlyVec3} b The origin of the rotation\n * @param {Number} rad The angle of rotation in radians\n * @returns {vec3} out\n */\n\nexport function rotateX(out, a, b, rad) {\n var p = [],\n r = []; //Translate point to the origin\n\n p[0] = a[0] - b[0];\n p[1] = a[1] - b[1];\n p[2] = a[2] - b[2]; //perform rotation\n\n r[0] = p[0];\n r[1] = p[1] * Math.cos(rad) - p[2] * Math.sin(rad);\n r[2] = p[1] * Math.sin(rad) + p[2] * Math.cos(rad); //translate to correct position\n\n out[0] = r[0] + b[0];\n out[1] = r[1] + b[1];\n out[2] = r[2] + b[2];\n return out;\n}\n/**\n * Rotate a 3D vector around the y-axis\n * @param {vec3} out The receiving vec3\n * @param {ReadonlyVec3} a The vec3 point to rotate\n * @param {ReadonlyVec3} b The origin of the rotation\n * @param {Number} rad The angle of rotation in radians\n * @returns {vec3} out\n */\n\nexport function rotateY(out, a, b, rad) {\n var p = [],\n r = []; //Translate point to the origin\n\n p[0] = a[0] - b[0];\n p[1] = a[1] - b[1];\n p[2] = a[2] - b[2]; //perform rotation\n\n r[0] = p[2] * Math.sin(rad) + p[0] * Math.cos(rad);\n r[1] = p[1];\n r[2] = p[2] * Math.cos(rad) - p[0] * Math.sin(rad); //translate to correct position\n\n out[0] = r[0] + b[0];\n out[1] = r[1] + b[1];\n out[2] = r[2] + b[2];\n return out;\n}\n/**\n * Rotate a 3D vector around the z-axis\n * @param {vec3} out The receiving vec3\n * @param {ReadonlyVec3} a The vec3 point to rotate\n * @param {ReadonlyVec3} b The origin of the rotation\n * @param {Number} rad The angle of rotation in radians\n * @returns {vec3} out\n */\n\nexport function rotateZ(out, a, b, rad) {\n var p = [],\n r = []; //Translate point to the origin\n\n p[0] = a[0] - b[0];\n p[1] = a[1] - b[1];\n p[2] = a[2] - b[2]; //perform rotation\n\n r[0] = p[0] * Math.cos(rad) - p[1] * Math.sin(rad);\n r[1] = p[0] * Math.sin(rad) + p[1] * Math.cos(rad);\n r[2] = p[2]; //translate to correct position\n\n out[0] = r[0] + b[0];\n out[1] = r[1] + b[1];\n out[2] = r[2] + b[2];\n return out;\n}\n/**\n * Get the angle between two 3D vectors\n * @param {ReadonlyVec3} a The first operand\n * @param {ReadonlyVec3} b The second operand\n * @returns {Number} The angle in radians\n */\n\nexport function angle(a, b) {\n var ax = a[0],\n ay = a[1],\n az = a[2],\n bx = b[0],\n by = b[1],\n bz = b[2],\n mag1 = Math.sqrt(ax * ax + ay * ay + az * az),\n mag2 = Math.sqrt(bx * bx + by * by + bz * bz),\n mag = mag1 * mag2,\n cosine = mag && dot(a, b) / mag;\n return Math.acos(Math.min(Math.max(cosine, -1), 1));\n}\n/**\n * Set the components of a vec3 to zero\n *\n * @param {vec3} out the receiving vector\n * @returns {vec3} out\n */\n\nexport function zero(out) {\n out[0] = 0.0;\n out[1] = 0.0;\n out[2] = 0.0;\n return out;\n}\n/**\n * Returns a string representation of a vector\n *\n * @param {ReadonlyVec3} a vector to represent as a string\n * @returns {String} string representation of the vector\n */\n\nexport function str(a) {\n return \"vec3(\" + a[0] + \", \" + a[1] + \", \" + a[2] + \")\";\n}\n/**\n * Returns whether or not the vectors have exactly the same elements in the same position (when compared with ===)\n *\n * @param {ReadonlyVec3} a The first vector.\n * @param {ReadonlyVec3} b The second vector.\n * @returns {Boolean} True if the vectors are equal, false otherwise.\n */\n\nexport function exactEquals(a, b) {\n return a[0] === b[0] && a[1] === b[1] && a[2] === b[2];\n}\n/**\n * Returns whether or not the vectors have approximately the same elements in the same position.\n *\n * @param {ReadonlyVec3} a The first vector.\n * @param {ReadonlyVec3} b The second vector.\n * @returns {Boolean} True if the vectors are equal, false otherwise.\n */\n\nexport function equals(a, b) {\n var a0 = a[0],\n a1 = a[1],\n a2 = a[2];\n var b0 = b[0],\n b1 = b[1],\n b2 = b[2];\n return Math.abs(a0 - b0) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a0), Math.abs(b0)) && Math.abs(a1 - b1) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a1), Math.abs(b1)) && Math.abs(a2 - b2) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a2), Math.abs(b2));\n}\n/**\n * Alias for {@link vec3.subtract}\n * @function\n */\n\nexport var sub = subtract;\n/**\n * Alias for {@link vec3.multiply}\n * @function\n */\n\nexport var mul = multiply;\n/**\n * Alias for {@link vec3.divide}\n * @function\n */\n\nexport var div = divide;\n/**\n * Alias for {@link vec3.distance}\n * @function\n */\n\nexport var dist = distance;\n/**\n * Alias for {@link vec3.squaredDistance}\n * @function\n */\n\nexport var sqrDist = squaredDistance;\n/**\n * Alias for {@link vec3.length}\n * @function\n */\n\nexport var len = length;\n/**\n * Alias for {@link vec3.squaredLength}\n * @function\n */\n\nexport var sqrLen = squaredLength;\n/**\n * Perform some operation over an array of vec3s.\n *\n * @param {Array} a the array of vectors to iterate over\n * @param {Number} stride Number of elements between the start of each vec3. If 0 assumes tightly packed\n * @param {Number} offset Number of elements to skip at the beginning of the array\n * @param {Number} count Number of vec3s to iterate over. If 0 iterates over entire array\n * @param {Function} fn Function to call for each vector in the array\n * @param {Object} [arg] additional argument to pass to fn\n * @returns {Array} a\n * @function\n */\n\nexport var forEach = function () {\n var vec = create();\n return function (a, stride, offset, count, fn, arg) {\n var i, l;\n\n if (!stride) {\n stride = 3;\n }\n\n if (!offset) {\n offset = 0;\n }\n\n if (count) {\n l = Math.min(count * stride + offset, a.length);\n } else {\n l = a.length;\n }\n\n for (i = offset; i < l; i += stride) {\n vec[0] = a[i];\n vec[1] = a[i + 1];\n vec[2] = a[i + 2];\n fn(vec, vec, arg);\n a[i] = vec[0];\n a[i + 1] = vec[1];\n a[i + 2] = vec[2];\n }\n\n return a;\n };\n}();","import * as glMatrix from \"./common.js\";\nimport * as mat3 from \"./mat3.js\";\nimport * as vec3 from \"./vec3.js\";\nimport * as vec4 from \"./vec4.js\";\n/**\n * Quaternion\n * @module quat\n */\n\n/**\n * Creates a new identity quat\n *\n * @returns {quat} a new quaternion\n */\n\nexport function create() {\n var out = new glMatrix.ARRAY_TYPE(4);\n\n if (glMatrix.ARRAY_TYPE != Float32Array) {\n out[0] = 0;\n out[1] = 0;\n out[2] = 0;\n }\n\n out[3] = 1;\n return out;\n}\n/**\n * Set a quat to the identity quaternion\n *\n * @param {quat} out the receiving quaternion\n * @returns {quat} out\n */\n\nexport function identity(out) {\n out[0] = 0;\n out[1] = 0;\n out[2] = 0;\n out[3] = 1;\n return out;\n}\n/**\n * Sets a quat from the given angle and rotation axis,\n * then returns it.\n *\n * @param {quat} out the receiving quaternion\n * @param {ReadonlyVec3} axis the axis around which to rotate\n * @param {Number} rad the angle in radians\n * @returns {quat} out\n **/\n\nexport function setAxisAngle(out, axis, rad) {\n rad = rad * 0.5;\n var s = Math.sin(rad);\n out[0] = s * axis[0];\n out[1] = s * axis[1];\n out[2] = s * axis[2];\n out[3] = Math.cos(rad);\n return out;\n}\n/**\n * Gets the rotation axis and angle for a given\n * quaternion. If a quaternion is created with\n * setAxisAngle, this method will return the same\n * values as providied in the original parameter list\n * OR functionally equivalent values.\n * Example: The quaternion formed by axis [0, 0, 1] and\n * angle -90 is the same as the quaternion formed by\n * [0, 0, 1] and 270. This method favors the latter.\n * @param {vec3} out_axis Vector receiving the axis of rotation\n * @param {ReadonlyQuat} q Quaternion to be decomposed\n * @return {Number} Angle, in radians, of the rotation\n */\n\nexport function getAxisAngle(out_axis, q) {\n var rad = Math.acos(q[3]) * 2.0;\n var s = Math.sin(rad / 2.0);\n\n if (s > glMatrix.EPSILON) {\n out_axis[0] = q[0] / s;\n out_axis[1] = q[1] / s;\n out_axis[2] = q[2] / s;\n } else {\n // If s is zero, return any axis (no rotation - axis does not matter)\n out_axis[0] = 1;\n out_axis[1] = 0;\n out_axis[2] = 0;\n }\n\n return rad;\n}\n/**\n * Gets the angular distance between two unit quaternions\n *\n * @param {ReadonlyQuat} a Origin unit quaternion\n * @param {ReadonlyQuat} b Destination unit quaternion\n * @return {Number} Angle, in radians, between the two quaternions\n */\n\nexport function getAngle(a, b) {\n var dotproduct = dot(a, b);\n return Math.acos(2 * dotproduct * dotproduct - 1);\n}\n/**\n * Multiplies two quat's\n *\n * @param {quat} out the receiving quaternion\n * @param {ReadonlyQuat} a the first operand\n * @param {ReadonlyQuat} b the second operand\n * @returns {quat} out\n */\n\nexport function multiply(out, a, b) {\n var ax = a[0],\n ay = a[1],\n az = a[2],\n aw = a[3];\n var bx = b[0],\n by = b[1],\n bz = b[2],\n bw = b[3];\n out[0] = ax * bw + aw * bx + ay * bz - az * by;\n out[1] = ay * bw + aw * by + az * bx - ax * bz;\n out[2] = az * bw + aw * bz + ax * by - ay * bx;\n out[3] = aw * bw - ax * bx - ay * by - az * bz;\n return out;\n}\n/**\n * Rotates a quaternion by the given angle about the X axis\n *\n * @param {quat} out quat receiving operation result\n * @param {ReadonlyQuat} a quat to rotate\n * @param {number} rad angle (in radians) to rotate\n * @returns {quat} out\n */\n\nexport function rotateX(out, a, rad) {\n rad *= 0.5;\n var ax = a[0],\n ay = a[1],\n az = a[2],\n aw = a[3];\n var bx = Math.sin(rad),\n bw = Math.cos(rad);\n out[0] = ax * bw + aw * bx;\n out[1] = ay * bw + az * bx;\n out[2] = az * bw - ay * bx;\n out[3] = aw * bw - ax * bx;\n return out;\n}\n/**\n * Rotates a quaternion by the given angle about the Y axis\n *\n * @param {quat} out quat receiving operation result\n * @param {ReadonlyQuat} a quat to rotate\n * @param {number} rad angle (in radians) to rotate\n * @returns {quat} out\n */\n\nexport function rotateY(out, a, rad) {\n rad *= 0.5;\n var ax = a[0],\n ay = a[1],\n az = a[2],\n aw = a[3];\n var by = Math.sin(rad),\n bw = Math.cos(rad);\n out[0] = ax * bw - az * by;\n out[1] = ay * bw + aw * by;\n out[2] = az * bw + ax * by;\n out[3] = aw * bw - ay * by;\n return out;\n}\n/**\n * Rotates a quaternion by the given angle about the Z axis\n *\n * @param {quat} out quat receiving operation result\n * @param {ReadonlyQuat} a quat to rotate\n * @param {number} rad angle (in radians) to rotate\n * @returns {quat} out\n */\n\nexport function rotateZ(out, a, rad) {\n rad *= 0.5;\n var ax = a[0],\n ay = a[1],\n az = a[2],\n aw = a[3];\n var bz = Math.sin(rad),\n bw = Math.cos(rad);\n out[0] = ax * bw + ay * bz;\n out[1] = ay * bw - ax * bz;\n out[2] = az * bw + aw * bz;\n out[3] = aw * bw - az * bz;\n return out;\n}\n/**\n * Calculates the W component of a quat from the X, Y, and Z components.\n * Assumes that quaternion is 1 unit in length.\n * Any existing W component will be ignored.\n *\n * @param {quat} out the receiving quaternion\n * @param {ReadonlyQuat} a quat to calculate W component of\n * @returns {quat} out\n */\n\nexport function calculateW(out, a) {\n var x = a[0],\n y = a[1],\n z = a[2];\n out[0] = x;\n out[1] = y;\n out[2] = z;\n out[3] = Math.sqrt(Math.abs(1.0 - x * x - y * y - z * z));\n return out;\n}\n/**\n * Calculate the exponential of a unit quaternion.\n *\n * @param {quat} out the receiving quaternion\n * @param {ReadonlyQuat} a quat to calculate the exponential of\n * @returns {quat} out\n */\n\nexport function exp(out, a) {\n var x = a[0],\n y = a[1],\n z = a[2],\n w = a[3];\n var r = Math.sqrt(x * x + y * y + z * z);\n var et = Math.exp(w);\n var s = r > 0 ? et * Math.sin(r) / r : 0;\n out[0] = x * s;\n out[1] = y * s;\n out[2] = z * s;\n out[3] = et * Math.cos(r);\n return out;\n}\n/**\n * Calculate the natural logarithm of a unit quaternion.\n *\n * @param {quat} out the receiving quaternion\n * @param {ReadonlyQuat} a quat to calculate the exponential of\n * @returns {quat} out\n */\n\nexport function ln(out, a) {\n var x = a[0],\n y = a[1],\n z = a[2],\n w = a[3];\n var r = Math.sqrt(x * x + y * y + z * z);\n var t = r > 0 ? Math.atan2(r, w) / r : 0;\n out[0] = x * t;\n out[1] = y * t;\n out[2] = z * t;\n out[3] = 0.5 * Math.log(x * x + y * y + z * z + w * w);\n return out;\n}\n/**\n * Calculate the scalar power of a unit quaternion.\n *\n * @param {quat} out the receiving quaternion\n * @param {ReadonlyQuat} a quat to calculate the exponential of\n * @param {Number} b amount to scale the quaternion by\n * @returns {quat} out\n */\n\nexport function pow(out, a, b) {\n ln(out, a);\n scale(out, out, b);\n exp(out, out);\n return out;\n}\n/**\n * Performs a spherical linear interpolation between two quat\n *\n * @param {quat} out the receiving quaternion\n * @param {ReadonlyQuat} a the first operand\n * @param {ReadonlyQuat} b the second operand\n * @param {Number} t interpolation amount, in the range [0-1], between the two inputs\n * @returns {quat} out\n */\n\nexport function slerp(out, a, b, t) {\n // benchmarks:\n // http://jsperf.com/quaternion-slerp-implementations\n var ax = a[0],\n ay = a[1],\n az = a[2],\n aw = a[3];\n var bx = b[0],\n by = b[1],\n bz = b[2],\n bw = b[3];\n var omega, cosom, sinom, scale0, scale1; // calc cosine\n\n cosom = ax * bx + ay * by + az * bz + aw * bw; // adjust signs (if necessary)\n\n if (cosom < 0.0) {\n cosom = -cosom;\n bx = -bx;\n by = -by;\n bz = -bz;\n bw = -bw;\n } // calculate coefficients\n\n\n if (1.0 - cosom > glMatrix.EPSILON) {\n // standard case (slerp)\n omega = Math.acos(cosom);\n sinom = Math.sin(omega);\n scale0 = Math.sin((1.0 - t) * omega) / sinom;\n scale1 = Math.sin(t * omega) / sinom;\n } else {\n // \"from\" and \"to\" quaternions are very close\n // ... so we can do a linear interpolation\n scale0 = 1.0 - t;\n scale1 = t;\n } // calculate final values\n\n\n out[0] = scale0 * ax + scale1 * bx;\n out[1] = scale0 * ay + scale1 * by;\n out[2] = scale0 * az + scale1 * bz;\n out[3] = scale0 * aw + scale1 * bw;\n return out;\n}\n/**\n * Generates a random unit quaternion\n *\n * @param {quat} out the receiving quaternion\n * @returns {quat} out\n */\n\nexport function random(out) {\n // Implementation of http://planning.cs.uiuc.edu/node198.html\n // TODO: Calling random 3 times is probably not the fastest solution\n var u1 = glMatrix.RANDOM();\n var u2 = glMatrix.RANDOM();\n var u3 = glMatrix.RANDOM();\n var sqrt1MinusU1 = Math.sqrt(1 - u1);\n var sqrtU1 = Math.sqrt(u1);\n out[0] = sqrt1MinusU1 * Math.sin(2.0 * Math.PI * u2);\n out[1] = sqrt1MinusU1 * Math.cos(2.0 * Math.PI * u2);\n out[2] = sqrtU1 * Math.sin(2.0 * Math.PI * u3);\n out[3] = sqrtU1 * Math.cos(2.0 * Math.PI * u3);\n return out;\n}\n/**\n * Calculates the inverse of a quat\n *\n * @param {quat} out the receiving quaternion\n * @param {ReadonlyQuat} a quat to calculate inverse of\n * @returns {quat} out\n */\n\nexport function invert(out, a) {\n var a0 = a[0],\n a1 = a[1],\n a2 = a[2],\n a3 = a[3];\n var dot = a0 * a0 + a1 * a1 + a2 * a2 + a3 * a3;\n var invDot = dot ? 1.0 / dot : 0; // TODO: Would be faster to return [0,0,0,0] immediately if dot == 0\n\n out[0] = -a0 * invDot;\n out[1] = -a1 * invDot;\n out[2] = -a2 * invDot;\n out[3] = a3 * invDot;\n return out;\n}\n/**\n * Calculates the conjugate of a quat\n * If the quaternion is normalized, this function is faster than quat.inverse and produces the same result.\n *\n * @param {quat} out the receiving quaternion\n * @param {ReadonlyQuat} a quat to calculate conjugate of\n * @returns {quat} out\n */\n\nexport function conjugate(out, a) {\n out[0] = -a[0];\n out[1] = -a[1];\n out[2] = -a[2];\n out[3] = a[3];\n return out;\n}\n/**\n * Creates a quaternion from the given 3x3 rotation matrix.\n *\n * NOTE: The resultant quaternion is not normalized, so you should be sure\n * to renormalize the quaternion yourself where necessary.\n *\n * @param {quat} out the receiving quaternion\n * @param {ReadonlyMat3} m rotation matrix\n * @returns {quat} out\n * @function\n */\n\nexport function fromMat3(out, m) {\n // Algorithm in Ken Shoemake's article in 1987 SIGGRAPH course notes\n // article \"Quaternion Calculus and Fast Animation\".\n var fTrace = m[0] + m[4] + m[8];\n var fRoot;\n\n if (fTrace > 0.0) {\n // |w| > 1/2, may as well choose w > 1/2\n fRoot = Math.sqrt(fTrace + 1.0); // 2w\n\n out[3] = 0.5 * fRoot;\n fRoot = 0.5 / fRoot; // 1/(4w)\n\n out[0] = (m[5] - m[7]) * fRoot;\n out[1] = (m[6] - m[2]) * fRoot;\n out[2] = (m[1] - m[3]) * fRoot;\n } else {\n // |w| <= 1/2\n var i = 0;\n if (m[4] > m[0]) i = 1;\n if (m[8] > m[i * 3 + i]) i = 2;\n var j = (i + 1) % 3;\n var k = (i + 2) % 3;\n fRoot = Math.sqrt(m[i * 3 + i] - m[j * 3 + j] - m[k * 3 + k] + 1.0);\n out[i] = 0.5 * fRoot;\n fRoot = 0.5 / fRoot;\n out[3] = (m[j * 3 + k] - m[k * 3 + j]) * fRoot;\n out[j] = (m[j * 3 + i] + m[i * 3 + j]) * fRoot;\n out[k] = (m[k * 3 + i] + m[i * 3 + k]) * fRoot;\n }\n\n return out;\n}\n/**\n * Creates a quaternion from the given euler angle x, y, z.\n *\n * @param {quat} out the receiving quaternion\n * @param {x} Angle to rotate around X axis in degrees.\n * @param {y} Angle to rotate around Y axis in degrees.\n * @param {z} Angle to rotate around Z axis in degrees.\n * @returns {quat} out\n * @function\n */\n\nexport function fromEuler(out, x, y, z) {\n var halfToRad = 0.5 * Math.PI / 180.0;\n x *= halfToRad;\n y *= halfToRad;\n z *= halfToRad;\n var sx = Math.sin(x);\n var cx = Math.cos(x);\n var sy = Math.sin(y);\n var cy = Math.cos(y);\n var sz = Math.sin(z);\n var cz = Math.cos(z);\n out[0] = sx * cy * cz - cx * sy * sz;\n out[1] = cx * sy * cz + sx * cy * sz;\n out[2] = cx * cy * sz - sx * sy * cz;\n out[3] = cx * cy * cz + sx * sy * sz;\n return out;\n}\n/**\n * Returns a string representation of a quatenion\n *\n * @param {ReadonlyQuat} a vector to represent as a string\n * @returns {String} string representation of the vector\n */\n\nexport function str(a) {\n return \"quat(\" + a[0] + \", \" + a[1] + \", \" + a[2] + \", \" + a[3] + \")\";\n}\n/**\n * Creates a new quat initialized with values from an existing quaternion\n *\n * @param {ReadonlyQuat} a quaternion to clone\n * @returns {quat} a new quaternion\n * @function\n */\n\nexport var clone = vec4.clone;\n/**\n * Creates a new quat initialized with the given values\n *\n * @param {Number} x X component\n * @param {Number} y Y component\n * @param {Number} z Z component\n * @param {Number} w W component\n * @returns {quat} a new quaternion\n * @function\n */\n\nexport var fromValues = vec4.fromValues;\n/**\n * Copy the values from one quat to another\n *\n * @param {quat} out the receiving quaternion\n * @param {ReadonlyQuat} a the source quaternion\n * @returns {quat} out\n * @function\n */\n\nexport var copy = vec4.copy;\n/**\n * Set the components of a quat to the given values\n *\n * @param {quat} out the receiving quaternion\n * @param {Number} x X component\n * @param {Number} y Y component\n * @param {Number} z Z component\n * @param {Number} w W component\n * @returns {quat} out\n * @function\n */\n\nexport var set = vec4.set;\n/**\n * Adds two quat's\n *\n * @param {quat} out the receiving quaternion\n * @param {ReadonlyQuat} a the first operand\n * @param {ReadonlyQuat} b the second operand\n * @returns {quat} out\n * @function\n */\n\nexport var add = vec4.add;\n/**\n * Alias for {@link quat.multiply}\n * @function\n */\n\nexport var mul = multiply;\n/**\n * Scales a quat by a scalar number\n *\n * @param {quat} out the receiving vector\n * @param {ReadonlyQuat} a the vector to scale\n * @param {Number} b amount to scale the vector by\n * @returns {quat} out\n * @function\n */\n\nexport var scale = vec4.scale;\n/**\n * Calculates the dot product of two quat's\n *\n * @param {ReadonlyQuat} a the first operand\n * @param {ReadonlyQuat} b the second operand\n * @returns {Number} dot product of a and b\n * @function\n */\n\nexport var dot = vec4.dot;\n/**\n * Performs a linear interpolation between two quat's\n *\n * @param {quat} out the receiving quaternion\n * @param {ReadonlyQuat} a the first operand\n * @param {ReadonlyQuat} b the second operand\n * @param {Number} t interpolation amount, in the range [0-1], between the two inputs\n * @returns {quat} out\n * @function\n */\n\nexport var lerp = vec4.lerp;\n/**\n * Calculates the length of a quat\n *\n * @param {ReadonlyQuat} a vector to calculate length of\n * @returns {Number} length of a\n */\n\nexport var length = vec4.length;\n/**\n * Alias for {@link quat.length}\n * @function\n */\n\nexport var len = length;\n/**\n * Calculates the squared length of a quat\n *\n * @param {ReadonlyQuat} a vector to calculate squared length of\n * @returns {Number} squared length of a\n * @function\n */\n\nexport var squaredLength = vec4.squaredLength;\n/**\n * Alias for {@link quat.squaredLength}\n * @function\n */\n\nexport var sqrLen = squaredLength;\n/**\n * Normalize a quat\n *\n * @param {quat} out the receiving quaternion\n * @param {ReadonlyQuat} a quaternion to normalize\n * @returns {quat} out\n * @function\n */\n\nexport var normalize = vec4.normalize;\n/**\n * Returns whether or not the quaternions have exactly the same elements in the same position (when compared with ===)\n *\n * @param {ReadonlyQuat} a The first quaternion.\n * @param {ReadonlyQuat} b The second quaternion.\n * @returns {Boolean} True if the vectors are equal, false otherwise.\n */\n\nexport var exactEquals = vec4.exactEquals;\n/**\n * Returns whether or not the quaternions have approximately the same elements in the same position.\n *\n * @param {ReadonlyQuat} a The first vector.\n * @param {ReadonlyQuat} b The second vector.\n * @returns {Boolean} True if the vectors are equal, false otherwise.\n */\n\nexport var equals = vec4.equals;\n/**\n * Sets a quaternion to represent the shortest rotation from one\n * vector to another.\n *\n * Both vectors are assumed to be unit length.\n *\n * @param {quat} out the receiving quaternion.\n * @param {ReadonlyVec3} a the initial vector\n * @param {ReadonlyVec3} b the destination vector\n * @returns {quat} out\n */\n\nexport var rotationTo = function () {\n var tmpvec3 = vec3.create();\n var xUnitVec3 = vec3.fromValues(1, 0, 0);\n var yUnitVec3 = vec3.fromValues(0, 1, 0);\n return function (out, a, b) {\n var dot = vec3.dot(a, b);\n\n if (dot < -0.999999) {\n vec3.cross(tmpvec3, xUnitVec3, a);\n if (vec3.len(tmpvec3) < 0.000001) vec3.cross(tmpvec3, yUnitVec3, a);\n vec3.normalize(tmpvec3, tmpvec3);\n setAxisAngle(out, tmpvec3, Math.PI);\n return out;\n } else if (dot > 0.999999) {\n out[0] = 0;\n out[1] = 0;\n out[2] = 0;\n out[3] = 1;\n return out;\n } else {\n vec3.cross(tmpvec3, a, b);\n out[0] = tmpvec3[0];\n out[1] = tmpvec3[1];\n out[2] = tmpvec3[2];\n out[3] = 1 + dot;\n return normalize(out, out);\n }\n };\n}();\n/**\n * Performs a spherical linear interpolation with two control points\n *\n * @param {quat} out the receiving quaternion\n * @param {ReadonlyQuat} a the first operand\n * @param {ReadonlyQuat} b the second operand\n * @param {ReadonlyQuat} c the third operand\n * @param {ReadonlyQuat} d the fourth operand\n * @param {Number} t interpolation amount, in the range [0-1], between the two inputs\n * @returns {quat} out\n */\n\nexport var sqlerp = function () {\n var temp1 = create();\n var temp2 = create();\n return function (out, a, b, c, d, t) {\n slerp(temp1, a, d, t);\n slerp(temp2, b, c, t);\n slerp(out, temp1, temp2, 2 * t * (1 - t));\n return out;\n };\n}();\n/**\n * Sets the specified quaternion with values corresponding to the given\n * axes. Each axis is a vec3 and is expected to be unit length and\n * perpendicular to all other specified axes.\n *\n * @param {ReadonlyVec3} view the vector representing the viewing direction\n * @param {ReadonlyVec3} right the vector representing the local \"right\" direction\n * @param {ReadonlyVec3} up the vector representing the local \"up\" direction\n * @returns {quat} out\n */\n\nexport var setAxes = function () {\n var matr = mat3.create();\n return function (out, view, right, up) {\n matr[0] = right[0];\n matr[3] = right[1];\n matr[6] = right[2];\n matr[1] = up[0];\n matr[4] = up[1];\n matr[7] = up[2];\n matr[2] = -view[0];\n matr[5] = -view[1];\n matr[8] = -view[2];\n return normalize(out, fromMat3(out, matr));\n };\n}();","import * as glMatrix from \"./common.js\";\n/**\n * 2 Dimensional Vector\n * @module vec2\n */\n\n/**\n * Creates a new, empty vec2\n *\n * @returns {vec2} a new 2D vector\n */\n\nexport function create() {\n var out = new glMatrix.ARRAY_TYPE(2);\n\n if (glMatrix.ARRAY_TYPE != Float32Array) {\n out[0] = 0;\n out[1] = 0;\n }\n\n return out;\n}\n/**\n * Creates a new vec2 initialized with values from an existing vector\n *\n * @param {ReadonlyVec2} a vector to clone\n * @returns {vec2} a new 2D vector\n */\n\nexport function clone(a) {\n var out = new glMatrix.ARRAY_TYPE(2);\n out[0] = a[0];\n out[1] = a[1];\n return out;\n}\n/**\n * Creates a new vec2 initialized with the given values\n *\n * @param {Number} x X component\n * @param {Number} y Y component\n * @returns {vec2} a new 2D vector\n */\n\nexport function fromValues(x, y) {\n var out = new glMatrix.ARRAY_TYPE(2);\n out[0] = x;\n out[1] = y;\n return out;\n}\n/**\n * Copy the values from one vec2 to another\n *\n * @param {vec2} out the receiving vector\n * @param {ReadonlyVec2} a the source vector\n * @returns {vec2} out\n */\n\nexport function copy(out, a) {\n out[0] = a[0];\n out[1] = a[1];\n return out;\n}\n/**\n * Set the components of a vec2 to the given values\n *\n * @param {vec2} out the receiving vector\n * @param {Number} x X component\n * @param {Number} y Y component\n * @returns {vec2} out\n */\n\nexport function set(out, x, y) {\n out[0] = x;\n out[1] = y;\n return out;\n}\n/**\n * Adds two vec2's\n *\n * @param {vec2} out the receiving vector\n * @param {ReadonlyVec2} a the first operand\n * @param {ReadonlyVec2} b the second operand\n * @returns {vec2} out\n */\n\nexport function add(out, a, b) {\n out[0] = a[0] + b[0];\n out[1] = a[1] + b[1];\n return out;\n}\n/**\n * Subtracts vector b from vector a\n *\n * @param {vec2} out the receiving vector\n * @param {ReadonlyVec2} a the first operand\n * @param {ReadonlyVec2} b the second operand\n * @returns {vec2} out\n */\n\nexport function subtract(out, a, b) {\n out[0] = a[0] - b[0];\n out[1] = a[1] - b[1];\n return out;\n}\n/**\n * Multiplies two vec2's\n *\n * @param {vec2} out the receiving vector\n * @param {ReadonlyVec2} a the first operand\n * @param {ReadonlyVec2} b the second operand\n * @returns {vec2} out\n */\n\nexport function multiply(out, a, b) {\n out[0] = a[0] * b[0];\n out[1] = a[1] * b[1];\n return out;\n}\n/**\n * Divides two vec2's\n *\n * @param {vec2} out the receiving vector\n * @param {ReadonlyVec2} a the first operand\n * @param {ReadonlyVec2} b the second operand\n * @returns {vec2} out\n */\n\nexport function divide(out, a, b) {\n out[0] = a[0] / b[0];\n out[1] = a[1] / b[1];\n return out;\n}\n/**\n * Math.ceil the components of a vec2\n *\n * @param {vec2} out the receiving vector\n * @param {ReadonlyVec2} a vector to ceil\n * @returns {vec2} out\n */\n\nexport function ceil(out, a) {\n out[0] = Math.ceil(a[0]);\n out[1] = Math.ceil(a[1]);\n return out;\n}\n/**\n * Math.floor the components of a vec2\n *\n * @param {vec2} out the receiving vector\n * @param {ReadonlyVec2} a vector to floor\n * @returns {vec2} out\n */\n\nexport function floor(out, a) {\n out[0] = Math.floor(a[0]);\n out[1] = Math.floor(a[1]);\n return out;\n}\n/**\n * Returns the minimum of two vec2's\n *\n * @param {vec2} out the receiving vector\n * @param {ReadonlyVec2} a the first operand\n * @param {ReadonlyVec2} b the second operand\n * @returns {vec2} out\n */\n\nexport function min(out, a, b) {\n out[0] = Math.min(a[0], b[0]);\n out[1] = Math.min(a[1], b[1]);\n return out;\n}\n/**\n * Returns the maximum of two vec2's\n *\n * @param {vec2} out the receiving vector\n * @param {ReadonlyVec2} a the first operand\n * @param {ReadonlyVec2} b the second operand\n * @returns {vec2} out\n */\n\nexport function max(out, a, b) {\n out[0] = Math.max(a[0], b[0]);\n out[1] = Math.max(a[1], b[1]);\n return out;\n}\n/**\n * Math.round the components of a vec2\n *\n * @param {vec2} out the receiving vector\n * @param {ReadonlyVec2} a vector to round\n * @returns {vec2} out\n */\n\nexport function round(out, a) {\n out[0] = Math.round(a[0]);\n out[1] = Math.round(a[1]);\n return out;\n}\n/**\n * Scales a vec2 by a scalar number\n *\n * @param {vec2} out the receiving vector\n * @param {ReadonlyVec2} a the vector to scale\n * @param {Number} b amount to scale the vector by\n * @returns {vec2} out\n */\n\nexport function scale(out, a, b) {\n out[0] = a[0] * b;\n out[1] = a[1] * b;\n return out;\n}\n/**\n * Adds two vec2's after scaling the second operand by a scalar value\n *\n * @param {vec2} out the receiving vector\n * @param {ReadonlyVec2} a the first operand\n * @param {ReadonlyVec2} b the second operand\n * @param {Number} scale the amount to scale b by before adding\n * @returns {vec2} out\n */\n\nexport function scaleAndAdd(out, a, b, scale) {\n out[0] = a[0] + b[0] * scale;\n out[1] = a[1] + b[1] * scale;\n return out;\n}\n/**\n * Calculates the euclidian distance between two vec2's\n *\n * @param {ReadonlyVec2} a the first operand\n * @param {ReadonlyVec2} b the second operand\n * @returns {Number} distance between a and b\n */\n\nexport function distance(a, b) {\n var x = b[0] - a[0],\n y = b[1] - a[1];\n return Math.hypot(x, y);\n}\n/**\n * Calculates the squared euclidian distance between two vec2's\n *\n * @param {ReadonlyVec2} a the first operand\n * @param {ReadonlyVec2} b the second operand\n * @returns {Number} squared distance between a and b\n */\n\nexport function squaredDistance(a, b) {\n var x = b[0] - a[0],\n y = b[1] - a[1];\n return x * x + y * y;\n}\n/**\n * Calculates the length of a vec2\n *\n * @param {ReadonlyVec2} a vector to calculate length of\n * @returns {Number} length of a\n */\n\nexport function length(a) {\n var x = a[0],\n y = a[1];\n return Math.hypot(x, y);\n}\n/**\n * Calculates the squared length of a vec2\n *\n * @param {ReadonlyVec2} a vector to calculate squared length of\n * @returns {Number} squared length of a\n */\n\nexport function squaredLength(a) {\n var x = a[0],\n y = a[1];\n return x * x + y * y;\n}\n/**\n * Negates the components of a vec2\n *\n * @param {vec2} out the receiving vector\n * @param {ReadonlyVec2} a vector to negate\n * @returns {vec2} out\n */\n\nexport function negate(out, a) {\n out[0] = -a[0];\n out[1] = -a[1];\n return out;\n}\n/**\n * Returns the inverse of the components of a vec2\n *\n * @param {vec2} out the receiving vector\n * @param {ReadonlyVec2} a vector to invert\n * @returns {vec2} out\n */\n\nexport function inverse(out, a) {\n out[0] = 1.0 / a[0];\n out[1] = 1.0 / a[1];\n return out;\n}\n/**\n * Normalize a vec2\n *\n * @param {vec2} out the receiving vector\n * @param {ReadonlyVec2} a vector to normalize\n * @returns {vec2} out\n */\n\nexport function normalize(out, a) {\n var x = a[0],\n y = a[1];\n var len = x * x + y * y;\n\n if (len > 0) {\n //TODO: evaluate use of glm_invsqrt here?\n len = 1 / Math.sqrt(len);\n }\n\n out[0] = a[0] * len;\n out[1] = a[1] * len;\n return out;\n}\n/**\n * Calculates the dot product of two vec2's\n *\n * @param {ReadonlyVec2} a the first operand\n * @param {ReadonlyVec2} b the second operand\n * @returns {Number} dot product of a and b\n */\n\nexport function dot(a, b) {\n return a[0] * b[0] + a[1] * b[1];\n}\n/**\n * Computes the cross product of two vec2's\n * Note that the cross product must by definition produce a 3D vector\n *\n * @param {vec3} out the receiving vector\n * @param {ReadonlyVec2} a the first operand\n * @param {ReadonlyVec2} b the second operand\n * @returns {vec3} out\n */\n\nexport function cross(out, a, b) {\n var z = a[0] * b[1] - a[1] * b[0];\n out[0] = out[1] = 0;\n out[2] = z;\n return out;\n}\n/**\n * Performs a linear interpolation between two vec2's\n *\n * @param {vec2} out the receiving vector\n * @param {ReadonlyVec2} a the first operand\n * @param {ReadonlyVec2} b the second operand\n * @param {Number} t interpolation amount, in the range [0-1], between the two inputs\n * @returns {vec2} out\n */\n\nexport function lerp(out, a, b, t) {\n var ax = a[0],\n ay = a[1];\n out[0] = ax + t * (b[0] - ax);\n out[1] = ay + t * (b[1] - ay);\n return out;\n}\n/**\n * Generates a random vector with the given scale\n *\n * @param {vec2} out the receiving vector\n * @param {Number} [scale] Length of the resulting vector. If ommitted, a unit vector will be returned\n * @returns {vec2} out\n */\n\nexport function random(out, scale) {\n scale = scale || 1.0;\n var r = glMatrix.RANDOM() * 2.0 * Math.PI;\n out[0] = Math.cos(r) * scale;\n out[1] = Math.sin(r) * scale;\n return out;\n}\n/**\n * Transforms the vec2 with a mat2\n *\n * @param {vec2} out the receiving vector\n * @param {ReadonlyVec2} a the vector to transform\n * @param {ReadonlyMat2} m matrix to transform with\n * @returns {vec2} out\n */\n\nexport function transformMat2(out, a, m) {\n var x = a[0],\n y = a[1];\n out[0] = m[0] * x + m[2] * y;\n out[1] = m[1] * x + m[3] * y;\n return out;\n}\n/**\n * Transforms the vec2 with a mat2d\n *\n * @param {vec2} out the receiving vector\n * @param {ReadonlyVec2} a the vector to transform\n * @param {ReadonlyMat2d} m matrix to transform with\n * @returns {vec2} out\n */\n\nexport function transformMat2d(out, a, m) {\n var x = a[0],\n y = a[1];\n out[0] = m[0] * x + m[2] * y + m[4];\n out[1] = m[1] * x + m[3] * y + m[5];\n return out;\n}\n/**\n * Transforms the vec2 with a mat3\n * 3rd vector component is implicitly '1'\n *\n * @param {vec2} out the receiving vector\n * @param {ReadonlyVec2} a the vector to transform\n * @param {ReadonlyMat3} m matrix to transform with\n * @returns {vec2} out\n */\n\nexport function transformMat3(out, a, m) {\n var x = a[0],\n y = a[1];\n out[0] = m[0] * x + m[3] * y + m[6];\n out[1] = m[1] * x + m[4] * y + m[7];\n return out;\n}\n/**\n * Transforms the vec2 with a mat4\n * 3rd vector component is implicitly '0'\n * 4th vector component is implicitly '1'\n *\n * @param {vec2} out the receiving vector\n * @param {ReadonlyVec2} a the vector to transform\n * @param {ReadonlyMat4} m matrix to transform with\n * @returns {vec2} out\n */\n\nexport function transformMat4(out, a, m) {\n var x = a[0];\n var y = a[1];\n out[0] = m[0] * x + m[4] * y + m[12];\n out[1] = m[1] * x + m[5] * y + m[13];\n return out;\n}\n/**\n * Rotate a 2D vector\n * @param {vec2} out The receiving vec2\n * @param {ReadonlyVec2} a The vec2 point to rotate\n * @param {ReadonlyVec2} b The origin of the rotation\n * @param {Number} rad The angle of rotation in radians\n * @returns {vec2} out\n */\n\nexport function rotate(out, a, b, rad) {\n //Translate point to the origin\n var p0 = a[0] - b[0],\n p1 = a[1] - b[1],\n sinC = Math.sin(rad),\n cosC = Math.cos(rad); //perform rotation and translate to correct position\n\n out[0] = p0 * cosC - p1 * sinC + b[0];\n out[1] = p0 * sinC + p1 * cosC + b[1];\n return out;\n}\n/**\n * Get the angle between two 2D vectors\n * @param {ReadonlyVec2} a The first operand\n * @param {ReadonlyVec2} b The second operand\n * @returns {Number} The angle in radians\n */\n\nexport function angle(a, b) {\n var x1 = a[0],\n y1 = a[1],\n x2 = b[0],\n y2 = b[1],\n // mag is the product of the magnitudes of a and b\n mag = Math.sqrt(x1 * x1 + y1 * y1) * Math.sqrt(x2 * x2 + y2 * y2),\n // mag &&.. short circuits if mag == 0\n cosine = mag && (x1 * x2 + y1 * y2) / mag; // Math.min(Math.max(cosine, -1), 1) clamps the cosine between -1 and 1\n\n return Math.acos(Math.min(Math.max(cosine, -1), 1));\n}\n/**\n * Set the components of a vec2 to zero\n *\n * @param {vec2} out the receiving vector\n * @returns {vec2} out\n */\n\nexport function zero(out) {\n out[0] = 0.0;\n out[1] = 0.0;\n return out;\n}\n/**\n * Returns a string representation of a vector\n *\n * @param {ReadonlyVec2} a vector to represent as a string\n * @returns {String} string representation of the vector\n */\n\nexport function str(a) {\n return \"vec2(\" + a[0] + \", \" + a[1] + \")\";\n}\n/**\n * Returns whether or not the vectors exactly have the same elements in the same position (when compared with ===)\n *\n * @param {ReadonlyVec2} a The first vector.\n * @param {ReadonlyVec2} b The second vector.\n * @returns {Boolean} True if the vectors are equal, false otherwise.\n */\n\nexport function exactEquals(a, b) {\n return a[0] === b[0] && a[1] === b[1];\n}\n/**\n * Returns whether or not the vectors have approximately the same elements in the same position.\n *\n * @param {ReadonlyVec2} a The first vector.\n * @param {ReadonlyVec2} b The second vector.\n * @returns {Boolean} True if the vectors are equal, false otherwise.\n */\n\nexport function equals(a, b) {\n var a0 = a[0],\n a1 = a[1];\n var b0 = b[0],\n b1 = b[1];\n return Math.abs(a0 - b0) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a0), Math.abs(b0)) && Math.abs(a1 - b1) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a1), Math.abs(b1));\n}\n/**\n * Alias for {@link vec2.length}\n * @function\n */\n\nexport var len = length;\n/**\n * Alias for {@link vec2.subtract}\n * @function\n */\n\nexport var sub = subtract;\n/**\n * Alias for {@link vec2.multiply}\n * @function\n */\n\nexport var mul = multiply;\n/**\n * Alias for {@link vec2.divide}\n * @function\n */\n\nexport var div = divide;\n/**\n * Alias for {@link vec2.distance}\n * @function\n */\n\nexport var dist = distance;\n/**\n * Alias for {@link vec2.squaredDistance}\n * @function\n */\n\nexport var sqrDist = squaredDistance;\n/**\n * Alias for {@link vec2.squaredLength}\n * @function\n */\n\nexport var sqrLen = squaredLength;\n/**\n * Perform some operation over an array of vec2s.\n *\n * @param {Array} a the array of vectors to iterate over\n * @param {Number} stride Number of elements between the start of each vec2. If 0 assumes tightly packed\n * @param {Number} offset Number of elements to skip at the beginning of the array\n * @param {Number} count Number of vec2s to iterate over. If 0 iterates over entire array\n * @param {Function} fn Function to call for each vector in the array\n * @param {Object} [arg] additional argument to pass to fn\n * @returns {Array} a\n * @function\n */\n\nexport var forEach = function () {\n var vec = create();\n return function (a, stride, offset, count, fn, arg) {\n var i, l;\n\n if (!stride) {\n stride = 2;\n }\n\n if (!offset) {\n offset = 0;\n }\n\n if (count) {\n l = Math.min(count * stride + offset, a.length);\n } else {\n l = a.length;\n }\n\n for (i = offset; i < l; i += stride) {\n vec[0] = a[i];\n vec[1] = a[i + 1];\n fn(vec, vec, arg);\n a[i] = vec[0];\n a[i + 1] = vec[1];\n }\n\n return a;\n };\n}();","/**\n * The maximum value of a coordinate in the internal tile coordinate system. Coordinates of\n * all source features normalized to this extent upon load.\n *\n * The value is a consequence of the following:\n *\n * * Vertex buffer store positions as signed 16 bit integers.\n * * One bit is lost for signedness to support tile buffers.\n * * One bit is lost because the line vertex buffer used to pack 1 bit of other data into the int.\n * * One bit is lost to support features extending past the extent on the right edge of the tile.\n * * This leaves us with 2^13 = 8192\n */\nexport const EXTENT = 8192;\n","import {EXTENT} from '../data/extent';\n\nimport type {OverscaledTileID} from './tile_id';\n\n/**\n * Converts a pixel value at a the given zoom level to tile units.\n *\n * The shaders mostly calculate everything in tile units so style\n * properties need to be converted from pixels to tile units using this.\n *\n * For example, a translation by 30 pixels at zoom 6.5 will be a\n * translation by pixelsToTileUnits(30, 6.5) tile units.\n *\n * @returns value in tile units\n */\nexport function pixelsToTileUnits(\n tile: {\n tileID: OverscaledTileID;\n tileSize: number;\n },\n pixelValue: number,\n z: number\n): number {\n return pixelValue * (EXTENT / (tile.tileSize * Math.pow(2, z - tile.tileID.overscaledZ)));\n}\n","import Point from '@mapbox/point-geometry';\nimport UnitBezier from '@mapbox/unitbezier';\nimport {isOffscreenCanvasDistorted} from './offscreen_canvas_distorted';\nimport type {Size} from './image';\nimport type {WorkerGlobalScopeInterface} from './web_worker';\nimport {mat3, mat4, quat, vec2, type vec3, type vec4} from 'gl-matrix';\nimport {pixelsToTileUnits} from '../source/pixels_to_tile_units';\nimport {type OverscaledTileID} from '../source/tile_id';\n\n/**\n * Returns a new 64 bit float vec4 of zeroes.\n */\nexport function createVec4f64(): vec4 { return new Float64Array(4) as any; }\n/**\n * Returns a new 64 bit float vec3 of zeroes.\n */\nexport function createVec3f64(): vec3 { return new Float64Array(3) as any; }\n/**\n * Returns a new 64 bit float mat4 of zeroes.\n */\nexport function createMat4f64(): mat4 { return new Float64Array(16) as any; }\n/**\n * Returns a new 32 bit float mat4 of zeroes.\n */\nexport function createMat4f32(): mat4 { return new Float32Array(16) as any; }\n/**\n * Returns a new 64 bit float mat4 set to identity.\n */\nexport function createIdentityMat4f64(): mat4 {\n const m = new Float64Array(16) as any;\n mat4.identity(m);\n return m;\n}\n/**\n * Returns a new 32 bit float mat4 set to identity.\n */\nexport function createIdentityMat4f32(): mat4 {\n const m = new Float32Array(16) as any;\n mat4.identity(m);\n return m;\n}\n\n/**\n * Returns a translation in tile units that correctly incorporates the view angle and the *-translate and *-translate-anchor properties.\n * @param inViewportPixelUnitsUnits - True when the units accepted by the matrix are in viewport pixels instead of tile units.\n */\nexport function translatePosition(\n transform: { bearingInRadians: number; zoom: number },\n tile: { tileID: OverscaledTileID; tileSize: number },\n translate: [number, number],\n translateAnchor: 'map' | 'viewport',\n inViewportPixelUnitsUnits: boolean = false\n): [number, number] {\n if (!translate[0] && !translate[1]) return [0, 0];\n\n const angle = inViewportPixelUnitsUnits ?\n (translateAnchor === 'map' ? -transform.bearingInRadians : 0) :\n (translateAnchor === 'viewport' ? transform.bearingInRadians : 0);\n\n if (angle) {\n const sinA = Math.sin(angle);\n const cosA = Math.cos(angle);\n translate = [\n translate[0] * cosA - translate[1] * sinA,\n translate[0] * sinA + translate[1] * cosA\n ];\n }\n\n return [\n inViewportPixelUnitsUnits ? translate[0] : pixelsToTileUnits(tile, translate[0], transform.zoom),\n inViewportPixelUnitsUnits ? translate[1] : pixelsToTileUnits(tile, translate[1], transform.zoom)];\n}\n\n/**\n * Returns the signed distance between a point and a plane.\n * @param plane - The plane equation, in the form where the first three components are the normal and the fourth component is the plane's distance from origin along normal.\n * @param point - The point whose distance from plane is returned.\n * @returns Signed distance of the point from the plane. Positive distances are in the half space where the plane normal points to, negative otherwise.\n */\nexport function pointPlaneSignedDistance(\n plane: vec4 | [number, number, number, number],\n point: vec3 | [number, number, number]\n): number {\n return plane[0] * point[0] + plane[1] * point[1] + plane[2] * point[2] + plane[3];\n}\n\n/**\n * Solves a quadratic equation in the form ax^2 + bx + c = 0 and returns its roots in no particular order.\n * Returns null if the equation has no roots or if it has infinitely many roots.\n */\nexport function solveQuadratic(a: number, b: number, c: number): {\n t0: number;\n t1: number;\n} {\n const d = b * b - 4 * a * c;\n if (d < 0 || (a === 0 && b === 0)) {\n return null;\n }\n\n // Uses a more precise solution from the book Ray Tracing Gems, chapter 7.\n // https://www.realtimerendering.com/raytracinggems/rtg/index.html\n const q = -0.5 * (b + Math.sign(b) * Math.sqrt(d));\n if (Math.abs(q) > 1e-12) {\n return {\n t0: c / q,\n t1: q / a\n };\n } else {\n // Use the schoolbook way if q is too small\n return {\n t0: (-b + Math.sqrt(d)) * 0.5 / a,\n t1: (-b + Math.sqrt(d)) * 0.5 / a\n };\n }\n}\n\n/**\n * Returns the angle in radians between two 2D vectors.\n * The angle is signed and describes how much the first vector would need to be be rotated clockwise\n * (assuming X is right and Y is down) so that it points in the same direction as the second vector.\n * @param vec1x - The X component of the first vector.\n * @param vec1y - The Y component of the first vector.\n * @param vec2x - The X component of the second vector.\n * @param vec2y - The Y component of the second vector.\n * @returns The signed angle between the two vectors, in range -PI..PI.\n */\nexport function angleToRotateBetweenVectors2D(vec1x: number, vec1y: number, vec2x: number, vec2y: number): number {\n // Normalize both vectors\n const length1 = Math.sqrt(vec1x * vec1x + vec1y * vec1y);\n const length2 = Math.sqrt(vec2x * vec2x + vec2y * vec2y);\n vec1x /= length1;\n vec1y /= length1;\n vec2x /= length2;\n vec2y /= length2;\n const dot = vec1x * vec2x + vec1y * vec2y;\n const angle = Math.acos(dot);\n // dot second vector with vector to the right of first (-vec1y, vec1x)\n const isVec2RightOfVec1 = (-vec1y * vec2x + vec1x * vec2y) > 0;\n if (isVec2RightOfVec1) {\n return angle;\n } else {\n return -angle;\n }\n}\n\n/**\n * For two angles in degrees, returns how many degrees to add to the first angle in order to obtain the second angle.\n * The returned difference value is always the shorted of the two - its absolute value is never greater than 180°.\n */\nexport function differenceOfAnglesDegrees(degreesA: number, degreesB: number): number {\n const a = mod(degreesA, 360);\n const b = mod(degreesB, 360);\n const diff1 = b - a;\n const diff2 = (b > a) ? (diff1 - 360) : (diff1 + 360);\n if (Math.abs(diff1) < Math.abs(diff2)) {\n return diff1;\n } else {\n return diff2;\n }\n}\n\n/**\n * For two angles in radians, returns how many radians to add to the first angle in order to obtain the second angle.\n * The returned difference value is always the shorted of the two - its absolute value is never greater than PI.\n */\nexport function differenceOfAnglesRadians(degreesA: number, degreesB: number): number {\n const a = mod(degreesA, Math.PI * 2);\n const b = mod(degreesB, Math.PI * 2);\n const diff1 = b - a;\n const diff2 = (b > a) ? (diff1 - Math.PI * 2) : (diff1 + Math.PI * 2);\n if (Math.abs(diff1) < Math.abs(diff2)) {\n return diff1;\n } else {\n return diff2;\n }\n}\n\n/**\n * When given two angles in degrees, returns the angular distance between them - the shorter one of the two possible arcs.\n */\nexport function distanceOfAnglesDegrees(degreesA: number, degreesB: number): number {\n const a = mod(degreesA, 360);\n const b = mod(degreesB, 360);\n return Math.min(\n Math.abs(a - b),\n Math.abs(a - b + 360),\n Math.abs(a - b - 360)\n );\n}\n\n/**\n * When given two angles in radians, returns the angular distance between them - the shorter one of the two possible arcs.\n */\nexport function distanceOfAnglesRadians(radiansA: number, radiansB: number): number {\n const a = mod(radiansA, Math.PI * 2);\n const b = mod(radiansB, Math.PI * 2);\n return Math.min(\n Math.abs(a - b),\n Math.abs(a - b + Math.PI * 2),\n Math.abs(a - b - Math.PI * 2)\n );\n}\n\n/**\n * Modulo function, as opposed to javascript's `%`, which is a remainder.\n * This functions will return positive values, even if the first operand is negative.\n */\nexport function mod(n, m) {\n return ((n % m) + m) % m;\n}\n\n/**\n * Takes a value in *old range*, linearly maps that range to *new range*, and returns the value in that new range.\n * Additionally, if the value is outside *old range*, it is clamped inside it.\n * Also works if one of the ranges is flipped (its `min` being larger than `max`).\n */\nexport function remapSaturate(value: number, oldRangeMin: number, oldRangeMax: number, newRangeMin: number, newRangeMax: number): number {\n const inOldRange = clamp((value - oldRangeMin) / (oldRangeMax - oldRangeMin), 0.0, 1.0);\n return lerp(newRangeMin, newRangeMax, inOldRange);\n}\n\n/**\n * Linearly interpolate between two values, similar to `mix` function from GLSL. No clamping is done.\n * @param a - The first value to interpolate. This value is returned when mix=0.\n * @param b - The second value to interpolate. This value is returned when mix=1.\n * @param mix - The interpolation factor. Range 0..1 interpolates between `a` and `b`, but values outside this range are also accepted.\n */\nexport function lerp(a: number, b: number, mix: number): number {\n return a * (1.0 - mix) + b * mix;\n}\n\n/**\n * For a given collection of 2D points, returns their axis-aligned bounding box,\n * in the format [minX, minY, maxX, maxY].\n */\nexport function getAABB(points: Array): [number, number, number, number] {\n let tlX = Infinity;\n let tlY = Infinity;\n let brX = -Infinity;\n let brY = -Infinity;\n\n for (const p of points) {\n tlX = Math.min(tlX, p.x);\n tlY = Math.min(tlY, p.y);\n brX = Math.max(brX, p.x);\n brY = Math.max(brY, p.y);\n }\n\n return [tlX, tlY, brX, brY];\n}\n\n/**\n * Given a value `t` that varies between 0 and 1, return\n * an interpolation function that eases between 0 and 1 in a pleasing\n * cubic in-out fashion.\n */\nexport function easeCubicInOut(t: number): number {\n if (t <= 0) return 0;\n if (t >= 1) return 1;\n const t2 = t * t,\n t3 = t2 * t;\n return 4 * (t < 0.5 ? t3 : 3 * (t - t2) + t3 - 0.75);\n}\n\n/**\n * Given given (x, y), (x1, y1) control points for a bezier curve,\n * return a function that interpolates along that curve.\n *\n * @param p1x - control point 1 x coordinate\n * @param p1y - control point 1 y coordinate\n * @param p2x - control point 2 x coordinate\n * @param p2y - control point 2 y coordinate\n */\nexport function bezier(p1x: number, p1y: number, p2x: number, p2y: number): (t: number) => number {\n const bezier = new UnitBezier(p1x, p1y, p2x, p2y);\n return (t: number) => {\n return bezier.solve(t);\n };\n}\n\n/**\n * A default bezier-curve powered easing function with\n * control points (0.25, 0.1) and (0.25, 1)\n */\nexport const defaultEasing = bezier(0.25, 0.1, 0.25, 1);\n\n/**\n * constrain n to the given range via min + max\n *\n * @param n - value\n * @param min - the minimum value to be returned\n * @param max - the maximum value to be returned\n * @returns the clamped value\n */\nexport function clamp(n: number, min: number, max: number): number {\n return Math.min(max, Math.max(min, n));\n}\n\n/**\n * constrain n to the given range, excluding the minimum, via modular arithmetic\n *\n * @param n - value\n * @param min - the minimum value to be returned, exclusive\n * @param max - the maximum value to be returned, inclusive\n * @returns constrained number\n */\nexport function wrap(n: number, min: number, max: number): number {\n const d = max - min;\n const w = ((n - min) % d + d) % d + min;\n return (w === min) ? max : w;\n}\n\n/**\n * Compute the difference between the keys in one object and the keys\n * in another object.\n *\n * @returns keys difference\n */\nexport function keysDifference(\n obj: {[key: string]: S},\n other: {[key: string]: T}\n): Array {\n const difference = [];\n for (const i in obj) {\n if (!(i in other)) {\n difference.push(i);\n }\n }\n return difference;\n}\n\n/**\n * Given a destination object and optionally many source objects,\n * copy all properties from the source objects into the destination.\n * The last source object given overrides properties from previous\n * source objects.\n *\n * @param dest - destination object\n * @param sources - sources from which properties are pulled\n */\nexport function extend(dest: T, source: U): T & U;\nexport function extend(dest: T, source1: U, source2: V): T & U & V;\nexport function extend(dest: T, source1: U, source2: V, source3: W): T & U & V & W;\nexport function extend(dest: object, ...sources: Array): any;\nexport function extend(dest: object, ...sources: Array): any {\n for (const src of sources) {\n for (const k in src) {\n dest[k] = src[k];\n }\n }\n return dest;\n}\n\n// See https://stackoverflow.com/questions/49401866/all-possible-keys-of-an-union-type\ntype KeysOfUnion = T extends T ? keyof T: never;\n\n/**\n * Given an object and a number of properties as strings, return version\n * of that object with only those properties.\n *\n * @param src - the object\n * @param properties - an array of property names chosen\n * to appear on the resulting object.\n * @returns object with limited properties.\n * @example\n * ```ts\n * let foo = { name: 'Charlie', age: 10 };\n * let justName = pick(foo, ['name']); // justName = { name: 'Charlie' }\n * ```\n */\nexport function pick(src: T, properties: Array>): Partial {\n const result: Partial = {};\n for (let i = 0; i < properties.length; i++) {\n const k = properties[i];\n if (k in src) {\n result[k] = src[k];\n }\n }\n return result;\n}\n\nlet id = 1;\n\n/**\n * Return a unique numeric id, starting at 1 and incrementing with\n * each call.\n *\n * @returns unique numeric id.\n */\nexport function uniqueId(): number {\n return id++;\n}\n\n/**\n * Return whether a given value is a power of two\n */\nexport function isPowerOfTwo(value: number): boolean {\n return (Math.log(value) / Math.LN2) % 1 === 0;\n}\n\n/**\n * Return the next power of two, or the input value if already a power of two\n */\nexport function nextPowerOfTwo(value: number): number {\n if (value <= 1) return 1;\n return Math.pow(2, Math.ceil(Math.log(value) / Math.LN2));\n}\n\n/**\n * Create an object by mapping all the values of an existing object while\n * preserving their keys.\n */\nexport function mapObject(input: any, iterator: Function, context?: any): any {\n const output = {};\n for (const key in input) {\n output[key] = iterator.call(context || this, input[key], key, input);\n }\n return output;\n}\n\n/**\n * Create an object by filtering out values of an existing object.\n */\nexport function filterObject(input: any, iterator: Function, context?: any): any {\n const output = {};\n for (const key in input) {\n if (iterator.call(context || this, input[key], key, input)) {\n output[key] = input[key];\n }\n }\n return output;\n}\n\n/**\n * Deeply compares two object literals.\n * @param a - first object literal to be compared\n * @param b - second object literal to be compared\n * @returns true if the two object literals are deeply equal, false otherwise\n */\nexport function deepEqual(a?: unknown | null, b?: unknown | null): boolean {\n if (Array.isArray(a)) {\n if (!Array.isArray(b) || a.length !== b.length) return false;\n for (let i = 0; i < a.length; i++) {\n if (!deepEqual(a[i], b[i])) return false;\n }\n return true;\n }\n if (typeof a === 'object' && a !== null && b !== null) {\n if (!(typeof b === 'object')) return false;\n const keys = Object.keys(a);\n if (keys.length !== Object.keys(b).length) return false;\n for (const key in a) {\n if (!deepEqual(a[key], b[key])) return false;\n }\n return true;\n }\n return a === b;\n}\n\n/**\n * Deeply clones two objects.\n */\nexport function clone(input: T): T {\n if (Array.isArray(input)) {\n return input.map(clone) as any as T;\n } else if (typeof input === 'object' && input) {\n return mapObject(input, clone) as any as T;\n } else {\n return input;\n }\n}\n\n/**\n * Check if two arrays have at least one common element.\n */\nexport function arraysIntersect(a: Array, b: Array): boolean {\n for (let l = 0; l < a.length; l++) {\n if (b.indexOf(a[l]) >= 0) return true;\n }\n return false;\n}\n\n/**\n * Print a warning message to the console and ensure duplicate warning messages\n * are not printed.\n */\nconst warnOnceHistory: {[key: string]: boolean} = {};\n\nexport function warnOnce(message: string): void {\n if (!warnOnceHistory[message]) {\n // console isn't defined in some WebWorkers, see #2558\n if (typeof console !== 'undefined') console.warn(message);\n warnOnceHistory[message] = true;\n }\n}\n\n/**\n * Indicates if the provided Points are in a counter clockwise (true) or clockwise (false) order\n *\n * @returns true for a counter clockwise set of points\n */\n// https://bryceboe.com/2006/10/23/line-segment-intersection-algorithm/\nexport function isCounterClockwise(a: Point, b: Point, c: Point): boolean {\n return (c.y - a.y) * (b.x - a.x) > (b.y - a.y) * (c.x - a.x);\n}\n\n/**\n * For two lines a and b in 2d space, defined by any two points along the lines,\n * find the intersection point, or return null if the lines are parallel\n *\n * @param a1 - First point on line a\n * @param a2 - Second point on line a\n * @param b1 - First point on line b\n * @param b2 - Second point on line b\n *\n * @returns the intersection point of the two lines or null if they are parallel\n */\nexport function findLineIntersection(a1: Point, a2: Point, b1: Point, b2: Point): Point | null {\n const aDeltaY = a2.y - a1.y;\n const aDeltaX = a2.x - a1.x;\n const bDeltaY = b2.y - b1.y;\n const bDeltaX = b2.x - b1.x;\n\n const denominator = (bDeltaY * aDeltaX) - (bDeltaX * aDeltaY);\n\n if (denominator === 0) {\n // Lines are parallel\n return null;\n }\n\n const originDeltaY = a1.y - b1.y;\n const originDeltaX = a1.x - b1.x;\n const aInterpolation = (bDeltaX * originDeltaY - bDeltaY * originDeltaX) / denominator;\n\n // Find intersection by projecting out from origin of first segment\n return new Point(a1.x + (aInterpolation * aDeltaX), a1.y + (aInterpolation * aDeltaY));\n}\n\n/**\n * Converts spherical coordinates to cartesian coordinates.\n *\n * @param spherical - Spherical coordinates, in [radial, azimuthal, polar]\n * @returns cartesian coordinates in [x, y, z]\n */\n\nexport function sphericalToCartesian([r, azimuthal, polar]: [number, number, number]): {\n x: number;\n y: number;\n z: number;\n} {\n // We abstract \"north\"/\"up\" (compass-wise) to be 0° when really this is 90° (π/2):\n // correct for that here\n azimuthal += 90;\n\n // Convert azimuthal and polar angles to radians\n azimuthal *= Math.PI / 180;\n polar *= Math.PI / 180;\n\n return {\n x: r * Math.cos(azimuthal) * Math.sin(polar),\n y: r * Math.sin(azimuthal) * Math.sin(polar),\n z: r * Math.cos(polar)\n };\n}\n\n/**\n * Returns true if the when run in the web-worker context.\n *\n * @returns `true` if the when run in the web-worker context.\n */\nexport function isWorker(self: any): self is WorkerGlobalScopeInterface {\n // @ts-ignore\n return typeof WorkerGlobalScope !== 'undefined' && typeof self !== 'undefined' && self instanceof WorkerGlobalScope;\n}\n\n/**\n * Parses data from 'Cache-Control' headers.\n *\n * @param cacheControl - Value of 'Cache-Control' header\n * @returns object containing parsed header info.\n */\n\nexport function parseCacheControl(cacheControl: string): any {\n // Taken from [Wreck](https://github.com/hapijs/wreck)\n const re = /(?:^|(?:\\s*\\,\\s*))([^\\x00-\\x20\\(\\)<>@\\,;\\:\\\\\"\\/\\[\\]\\?\\=\\{\\}\\x7F]+)(?:\\=(?:([^\\x00-\\x20\\(\\)<>@\\,;\\:\\\\\"\\/\\[\\]\\?\\=\\{\\}\\x7F]+)|(?:\\\"((?:[^\"\\\\]|\\\\.)*)\\\")))?/g;\n\n const header = {};\n cacheControl.replace(re, ($0, $1, $2, $3) => {\n const value = $2 || $3;\n header[$1] = value ? value.toLowerCase() : true;\n return '';\n });\n\n if (header['max-age']) {\n const maxAge = parseInt(header['max-age'], 10);\n if (isNaN(maxAge)) delete header['max-age'];\n else header['max-age'] = maxAge;\n }\n\n return header;\n}\n\nlet _isSafari = null;\n\n/**\n * Returns true when run in WebKit derived browsers.\n * This is used as a workaround for a memory leak in Safari caused by using Transferable objects to\n * transfer data between WebWorkers and the main thread.\n * https://github.com/mapbox/mapbox-gl-js/issues/8771\n *\n * This should be removed once the underlying Safari issue is fixed.\n *\n * @param scope - Since this function is used both on the main thread and WebWorker context,\n * let the calling scope pass in the global scope object.\n * @returns `true` when run in WebKit derived browsers.\n */\nexport function isSafari(scope: any): boolean {\n if (_isSafari == null) {\n const userAgent = scope.navigator ? scope.navigator.userAgent : null;\n _isSafari = !!scope.safari ||\n !!(userAgent && (/\\b(iPad|iPhone|iPod)\\b/.test(userAgent) || (!!userAgent.match('Safari') && !userAgent.match('Chrome'))));\n }\n return _isSafari;\n}\n\nexport function storageAvailable(type: string): boolean {\n try {\n const storage = window[type];\n storage.setItem('_mapbox_test_', 1);\n storage.removeItem('_mapbox_test_');\n return true;\n } catch {\n return false;\n }\n}\n\n// The following methods are from https://developer.mozilla.org/en-US/docs/Web/API/WindowBase64/Base64_encoding_and_decoding#The_Unicode_Problem\n//Unicode compliant base64 encoder for strings\nexport function b64EncodeUnicode(str: string) {\n return btoa(\n encodeURIComponent(str).replace(/%([0-9A-F]{2})/g,\n (match, p1) => {\n return String.fromCharCode(Number('0x' + p1)); //eslint-disable-line\n }\n )\n );\n}\n\n// Unicode compliant decoder for base64-encoded strings\nexport function b64DecodeUnicode(str: string) {\n return decodeURIComponent(atob(str).split('').map((c) => {\n return '%' + ('00' + c.charCodeAt(0).toString(16)).slice(-2); //eslint-disable-line\n }).join(''));\n}\n\nexport function isImageBitmap(image: any): image is ImageBitmap {\n return typeof ImageBitmap !== 'undefined' && image instanceof ImageBitmap;\n}\n\n/**\n * Converts an ArrayBuffer to an ImageBitmap.\n *\n * Used mostly for testing purposes only, because mocking libs don't know how to work with ArrayBuffers, but work\n * perfectly fine with ImageBitmaps. Might also be used for environments (other than testing) not supporting\n * ArrayBuffers.\n *\n * @param data - Data to convert\n * @returns - A promise resolved when the conversion is finished\n */\nexport const arrayBufferToImageBitmap = async (data: ArrayBuffer): Promise => {\n if (data.byteLength === 0) {\n return createImageBitmap(new ImageData(1, 1));\n }\n const blob: Blob = new Blob([new Uint8Array(data)], {type: 'image/png'});\n try {\n return createImageBitmap(blob);\n } catch (e) {\n throw new Error(`Could not load image because of ${e.message}. Please make sure to use a supported image type such as PNG or JPEG. Note that SVGs are not supported.`);\n }\n};\n\nconst transparentPngUrl = 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAC0lEQVQYV2NgAAIAAAUAAarVyFEAAAAASUVORK5CYII=';\n\n/**\n * Converts an ArrayBuffer to an HTMLImageElement.\n *\n * Used mostly for testing purposes only, because mocking libs don't know how to work with ArrayBuffers, but work\n * perfectly fine with ImageBitmaps. Might also be used for environments (other than testing) not supporting\n * ArrayBuffers.\n *\n * @param data - Data to convert\n * @returns - A promise resolved when the conversion is finished\n */\nexport const arrayBufferToImage = (data: ArrayBuffer): Promise => {\n return new Promise((resolve, reject) => {\n const img: HTMLImageElement = new Image();\n img.onload = () => {\n resolve(img);\n URL.revokeObjectURL(img.src);\n // prevent image dataURI memory leak in Safari;\n // but don't free the image immediately because it might be uploaded in the next frame\n // https://github.com/mapbox/mapbox-gl-js/issues/10226\n img.onload = null;\n window.requestAnimationFrame(() => { img.src = transparentPngUrl; });\n };\n img.onerror = () => reject(new Error('Could not load image. Please make sure to use a supported image type such as PNG or JPEG. Note that SVGs are not supported.'));\n const blob: Blob = new Blob([new Uint8Array(data)], {type: 'image/png'});\n img.src = data.byteLength ? URL.createObjectURL(blob) : transparentPngUrl;\n });\n};\n\n/**\n * Computes the webcodecs VideoFrame API options to select a rectangle out of\n * an image and write it into the destination rectangle.\n *\n * Rect (x/y/width/height) select the overlapping rectangle from the source image\n * and layout (offset/stride) write that overlapping rectangle to the correct place\n * in the destination image.\n *\n * Offset is the byte offset in the dest image that the first pixel appears at\n * and stride is the number of bytes to the start of the next row:\n * ┌───────────┐\n * │ dest │\n * │ ┌───┼───────┐\n * │offset→│▓▓▓│ source│\n * │ │▓▓▓│ │\n * │ └───┼───────┘\n * │stride ⇠╌╌╌│\n * │╌╌╌╌╌╌→ │\n * └───────────┘\n *\n * @param image - source image containing a width and height attribute\n * @param x - top-left x coordinate to read from the image\n * @param y - top-left y coordinate to read from the image\n * @param width - width of the rectangle to read from the image\n * @param height - height of the rectangle to read from the image\n * @returns the layout and rect options to pass into VideoFrame API\n */\nfunction computeVideoFrameParameters(image: Size, x: number, y: number, width: number, height: number): VideoFrameCopyToOptions {\n const destRowOffset = Math.max(-x, 0) * 4;\n const firstSourceRow = Math.max(0, y);\n const firstDestRow = firstSourceRow - y;\n const offset = firstDestRow * width * 4 + destRowOffset;\n const stride = width * 4;\n\n const sourceLeft = Math.max(0, x);\n const sourceTop = Math.max(0, y);\n const sourceRight = Math.min(image.width, x + width);\n const sourceBottom = Math.min(image.height, y + height);\n return {\n rect: {\n x: sourceLeft,\n y: sourceTop,\n width: sourceRight - sourceLeft,\n height: sourceBottom - sourceTop\n },\n layout: [{offset, stride}]\n };\n}\n\n/**\n * Reads pixels from an ImageBitmap/Image/canvas using webcodec VideoFrame API.\n *\n * @param data - image, imagebitmap, or canvas to parse\n * @param x - top-left x coordinate to read from the image\n * @param y - top-left y coordinate to read from the image\n * @param width - width of the rectangle to read from the image\n * @param height - height of the rectangle to read from the image\n * @returns a promise containing the parsed RGBA pixel values of the image, or the error if an error occurred\n */\nexport async function readImageUsingVideoFrame(\n image: HTMLImageElement | HTMLCanvasElement | ImageBitmap | OffscreenCanvas,\n x: number, y: number, width: number, height: number\n): Promise {\n if (typeof VideoFrame === 'undefined') {\n throw new Error('VideoFrame not supported');\n }\n const frame = new VideoFrame(image, {timestamp: 0});\n try {\n const format = frame?.format;\n if (!format || !(format.startsWith('BGR') || format.startsWith('RGB'))) {\n throw new Error(`Unrecognized format ${format}`);\n }\n const swapBR = format.startsWith('BGR');\n const result = new Uint8ClampedArray(width * height * 4);\n await frame.copyTo(result, computeVideoFrameParameters(image, x, y, width, height));\n if (swapBR) {\n for (let i = 0; i < result.length; i += 4) {\n const tmp = result[i];\n result[i] = result[i + 2];\n result[i + 2] = tmp;\n }\n }\n return result;\n } finally {\n frame.close();\n }\n}\n\nlet offscreenCanvas: OffscreenCanvas;\nlet offscreenCanvasContext: OffscreenCanvasRenderingContext2D;\n\n/**\n * Reads pixels from an ImageBitmap/Image/canvas using OffscreenCanvas\n *\n * @param data - image, imagebitmap, or canvas to parse\n * @param x - top-left x coordinate to read from the image\n * @param y - top-left y coordinate to read from the image\n * @param width - width of the rectangle to read from the image\n * @param height - height of the rectangle to read from the image\n * @returns a promise containing the parsed RGBA pixel values of the image, or the error if an error occurred\n */\nexport function readImageDataUsingOffscreenCanvas(\n imgBitmap: HTMLImageElement | HTMLCanvasElement | ImageBitmap | OffscreenCanvas,\n x: number, y: number, width: number, height: number\n): Uint8ClampedArray {\n const origWidth = imgBitmap.width;\n const origHeight = imgBitmap.height;\n // Lazily initialize OffscreenCanvas\n if (!offscreenCanvas || !offscreenCanvasContext) {\n // Dem tiles are typically 256x256\n offscreenCanvas = new OffscreenCanvas(origWidth, origHeight);\n offscreenCanvasContext = offscreenCanvas.getContext('2d', {willReadFrequently: true});\n }\n\n offscreenCanvas.width = origWidth;\n offscreenCanvas.height = origHeight;\n\n offscreenCanvasContext.drawImage(imgBitmap, 0, 0, origWidth, origHeight);\n const imgData = offscreenCanvasContext.getImageData(x, y, width, height);\n offscreenCanvasContext.clearRect(0, 0, origWidth, origHeight);\n return imgData.data;\n}\n\n/**\n * Reads RGBA pixels from an preferring OffscreenCanvas, but falling back to VideoFrame if supported and\n * the browser is mangling OffscreenCanvas getImageData results.\n *\n * @param data - image, imagebitmap, or canvas to parse\n * @param x - top-left x coordinate to read from the image\n * @param y - top-left y coordinate to read from the image\n * @param width - width of the rectangle to read from the image\n * @param height - height of the rectangle to read from the image\n * @returns a promise containing the parsed RGBA pixel values of the image\n */\nexport async function getImageData(\n image: HTMLImageElement | HTMLCanvasElement | ImageBitmap | OffscreenCanvas,\n x: number, y: number, width: number, height: number\n): Promise {\n if (isOffscreenCanvasDistorted()) {\n try {\n return await readImageUsingVideoFrame(image, x, y, width, height);\n } catch {\n // fall back to OffscreenCanvas\n }\n }\n return readImageDataUsingOffscreenCanvas(image, x, y, width, height);\n}\n\n/**\n * Allows to unsubscribe from events without the need to store the method reference.\n */\nexport interface Subscription {\n /**\n * Unsubscribes from the event.\n */\n unsubscribe(): void;\n}\n\nexport interface Subscriber {\n addEventListener: typeof window.addEventListener;\n removeEventListener: typeof window.removeEventListener;\n}\n\n/**\n * This method is used in order to register an event listener using a lambda function.\n * The return value will allow unsubscribing from the event, without the need to store the method reference.\n * @param target - The target\n * @param message - The message\n * @param listener - The listener\n * @param options - The options\n * @returns a subscription object that can be used to unsubscribe from the event\n */\nexport function subscribe(target: Subscriber, message: keyof WindowEventMap, listener: (...args: any) => void, options: boolean | AddEventListenerOptions): Subscription {\n target.addEventListener(message, listener, options);\n return {\n unsubscribe: () => {\n target.removeEventListener(message, listener, options);\n }\n };\n}\n\n/**\n * This method converts degrees to radians.\n * The return value is the radian value.\n * @param degrees - The number of degrees\n * @returns radians\n */\nexport function degreesToRadians(degrees: number): number {\n return degrees * Math.PI / 180;\n}\n\n/**\n * This method converts radians to degrees.\n * The return value is the degrees value.\n * @param degrees - The number of radians\n * @returns degrees\n */\nexport function radiansToDegrees(degrees: number): number {\n return degrees / Math.PI * 180;\n}\n\nexport type RollPitchBearing = {\n roll: number;\n pitch: number;\n bearing: number;\n};\n\nexport function rollPitchBearingEqual(a: RollPitchBearing, b: RollPitchBearing): boolean {\n return a.roll == b.roll && a.pitch == b.pitch && a.bearing == b.bearing;\n}\n\n/**\n * This method converts a rotation quaternion to roll, pitch, and bearing angles in degrees.\n * @param rotation - The rotation quaternion\n * @returns roll, pitch, and bearing angles in degrees\n */\nexport function getRollPitchBearing(rotation: quat): RollPitchBearing {\n const m: mat3 = new Float64Array(9) as any;\n mat3.fromQuat(m, rotation);\n\n const xAngle = radiansToDegrees(-Math.asin(clamp(m[2], -1, 1)));\n let roll: number;\n let bearing: number;\n if (Math.hypot(m[5], m[8]) < 1.0e-3) {\n roll = 0.0;\n bearing = -radiansToDegrees(Math.atan2(m[3], m[4]));\n } else {\n roll = radiansToDegrees((m[5] === 0.0 && m[8] === 0.0) ? 0.0 : Math.atan2(m[5], m[8]));\n bearing = radiansToDegrees((m[1] === 0.0 && m[0] === 0.0) ? 0.0 : Math.atan2(m[1], m[0]));\n }\n\n return {roll, pitch: xAngle + 90.0, bearing};\n}\n\nexport function getAngleDelta(lastPoint: Point, currentPoint: Point, center: Point): number {\n const pointVect = vec2.fromValues(currentPoint.x - center.x, currentPoint.y - center.y);\n const lastPointVec = vec2.fromValues(lastPoint.x - center.x, lastPoint.y - center.y);\n\n const crossProduct = pointVect[0] * lastPointVec[1] - pointVect[1] * lastPointVec[0];\n const angleRadians = Math.atan2(crossProduct, vec2.dot(pointVect, lastPointVec));\n return radiansToDegrees(angleRadians);\n}\n\n/**\n * This method converts roll, pitch, and bearing angles in degrees to a rotation quaternion.\n * @param roll - Roll angle in degrees\n * @param pitch - Pitch angle in degrees\n * @param bearing - Bearing angle in degrees\n * @returns The rotation quaternion\n */\nexport function rollPitchBearingToQuat(roll: number, pitch: number, bearing: number): quat {\n const rotation: quat = new Float64Array(4) as any;\n quat.fromEuler(rotation, roll, pitch - 90.0, bearing);\n return rotation;\n}\n\n/**\n * Makes optional keys required and add the the undefined type.\n *\n * ```\n * interface Test {\n * foo: number;\n * bar?: number;\n * baz: number | undefined;\n * }\n *\n * Complete {\n * foo: number;\n * bar: number | undefined;\n * baz: number | undefined;\n * }\n *\n * ```\n *\n * See https://medium.com/terria/typescript-transforming-optional-properties-to-required-properties-that-may-be-undefined-7482cb4e1585\n */\n\nexport type Complete = {\n [P in keyof Required]: Pick extends Required> ? T[P] : (T[P] | undefined);\n}\n\n/**\n * A helper to allow require of at least one property\n */\nexport type RequireAtLeastOne = { [K in keyof T]-?: Required> & Partial>>; }[keyof T];\n\nexport type TileJSON = {\n tilejson: '2.2.0' | '2.1.0' | '2.0.1' | '2.0.0' | '1.0.0';\n name?: string;\n description?: string;\n version?: string;\n attribution?: string;\n template?: string;\n tiles: Array;\n grids?: Array;\n data?: Array;\n minzoom?: number;\n maxzoom?: number;\n bounds?: [number, number, number, number];\n center?: [number, number, number];\n vector_layers: [{id: string}]; // this is partial but enough for what we need\n};\n\n/**\n * The maximum world tile zoom (Z).\n * In other words, the upper bound supported for tile zoom.\n */\nexport const MAX_TILE_ZOOM = 25;\n\n/**\n * The minimum world tile zoom (Z).\n * In other words, the lower bound supported for tile zoom.\n */\nexport const MIN_TILE_ZOOM = 0;\n","import {wrap} from '../util/util';\n\n/*\n* Approximate radius of the earth in meters.\n* Uses the WGS-84 approximation. The radius at the equator is ~6378137 and at the poles is ~6356752. https://en.wikipedia.org/wiki/World_Geodetic_System#WGS84\n* 6371008.8 is one published \"average radius\" see https://en.wikipedia.org/wiki/Earth_radius#Mean_radius, or ftp://athena.fsv.cvut.cz/ZFG/grs80-Moritz.pdf p.4\n*/\nexport const earthRadius = 6371008.8;\n\n/**\n * A {@link LngLat} object, an array of two numbers representing longitude and latitude,\n * or an object with `lng` and `lat` or `lon` and `lat` properties.\n *\n * @group Geography and Geometry\n *\n * @example\n * ```ts\n * let v1 = new LngLat(-122.420679, 37.772537);\n * let v2 = [-122.420679, 37.772537];\n * let v3 = {lon: -122.420679, lat: 37.772537};\n * ```\n */\nexport type LngLatLike = LngLat | {\n lng: number;\n lat: number;\n} | {\n lon: number;\n lat: number;\n} | [number, number];\n\n/**\n * A `LngLat` object represents a given longitude and latitude coordinate, measured in degrees.\n * These coordinates are based on the [WGS84 (EPSG:4326) standard](https://en.wikipedia.org/wiki/World_Geodetic_System#WGS84).\n *\n * MapLibre GL JS uses longitude, latitude coordinate order (as opposed to latitude, longitude) to match the\n * [GeoJSON specification](https://tools.ietf.org/html/rfc7946).\n *\n * Note that any MapLibre GL JS method that accepts a `LngLat` object as an argument or option\n * can also accept an `Array` of two numbers and will perform an implicit conversion.\n * This flexible type is documented as {@link LngLatLike}.\n *\n * @group Geography and Geometry\n *\n * @example\n * ```ts\n * let ll = new LngLat(-123.9749, 40.7736);\n * ll.lng; // = -123.9749\n * ```\n * @see [Get coordinates of the mouse pointer](https://maplibre.org/maplibre-gl-js/docs/examples/mouse-position/)\n * @see [Display a popup](https://maplibre.org/maplibre-gl-js/docs/examples/popup/)\n * @see [Create a timeline animation](https://maplibre.org/maplibre-gl-js/docs/examples/timeline-animation/)\n */\nexport class LngLat {\n /**\n * Longitude, measured in degrees.\n */\n lng: number;\n\n /**\n * Latitude, measured in degrees.\n */\n lat: number;\n\n /**\n * @param lng - Longitude, measured in degrees.\n * @param lat - Latitude, measured in degrees.\n */\n constructor(lng: number, lat: number) {\n if (isNaN(lng) || isNaN(lat)) {\n throw new Error(`Invalid LngLat object: (${lng}, ${lat})`);\n }\n this.lng = +lng;\n this.lat = +lat;\n if (this.lat > 90 || this.lat < -90) {\n throw new Error('Invalid LngLat latitude value: must be between -90 and 90');\n }\n }\n\n /**\n * Returns a new `LngLat` object whose longitude is wrapped to the range (-180, 180).\n *\n * @returns The wrapped `LngLat` object.\n * @example\n * ```ts\n * let ll = new LngLat(286.0251, 40.7736);\n * let wrapped = ll.wrap();\n * wrapped.lng; // = -73.9749\n * ```\n */\n wrap() {\n return new LngLat(wrap(this.lng, -180, 180), this.lat);\n }\n\n /**\n * Returns the coordinates represented as an array of two numbers.\n *\n * @returns The coordinates represented as an array of longitude and latitude.\n * @example\n * ```ts\n * let ll = new LngLat(-73.9749, 40.7736);\n * ll.toArray(); // = [-73.9749, 40.7736]\n * ```\n */\n toArray(): [number, number] {\n return [this.lng, this.lat];\n }\n\n /**\n * Returns the coordinates represent as a string.\n *\n * @returns The coordinates represented as a string of the format `'LngLat(lng, lat)'`.\n * @example\n * ```ts\n * let ll = new LngLat(-73.9749, 40.7736);\n * ll.toString(); // = \"LngLat(-73.9749, 40.7736)\"\n * ```\n */\n toString(): string {\n return `LngLat(${this.lng}, ${this.lat})`;\n }\n\n /**\n * Returns the approximate distance between a pair of coordinates in meters\n * Uses the Haversine Formula (from R.W. Sinnott, \"Virtues of the Haversine\", Sky and Telescope, vol. 68, no. 2, 1984, p. 159)\n *\n * @param lngLat - coordinates to compute the distance to\n * @returns Distance in meters between the two coordinates.\n * @example\n * ```ts\n * let new_york = new LngLat(-74.0060, 40.7128);\n * let los_angeles = new LngLat(-118.2437, 34.0522);\n * new_york.distanceTo(los_angeles); // = 3935751.690893987, \"true distance\" using a non-spherical approximation is ~3966km\n * ```\n */\n distanceTo(lngLat: LngLat): number {\n const rad = Math.PI / 180;\n const lat1 = this.lat * rad;\n const lat2 = lngLat.lat * rad;\n const a = Math.sin(lat1) * Math.sin(lat2) + Math.cos(lat1) * Math.cos(lat2) * Math.cos((lngLat.lng - this.lng) * rad);\n\n const maxMeters = earthRadius * Math.acos(Math.min(a, 1));\n return maxMeters;\n }\n\n /**\n * Converts an array of two numbers or an object with `lng` and `lat` or `lon` and `lat` properties\n * to a `LngLat` object.\n *\n * If a `LngLat` object is passed in, the function returns it unchanged.\n *\n * @param input - An array of two numbers or object to convert, or a `LngLat` object to return.\n * @returns A new `LngLat` object, if a conversion occurred, or the original `LngLat` object.\n * @example\n * ```ts\n * let arr = [-73.9749, 40.7736];\n * let ll = LngLat.convert(arr);\n * ll; // = LngLat {lng: -73.9749, lat: 40.7736}\n * ```\n */\n static convert(input: LngLatLike): LngLat {\n if (input instanceof LngLat) {\n return input;\n }\n if (Array.isArray(input) && (input.length === 2 || input.length === 3)) {\n return new LngLat(Number(input[0]), Number(input[1]));\n }\n if (!Array.isArray(input) && typeof input === 'object' && input !== null) {\n return new LngLat(\n // flow can't refine this to have one of lng or lat, so we have to cast to any\n Number('lng' in input ? (input as any).lng : (input as any).lon),\n Number(input.lat)\n );\n }\n throw new Error('`LngLatLike` argument must be specified as a LngLat instance, an object {lng: , lat: }, an object {lon: , lat: }, or an array of [, ]');\n }\n}\n","import {LngLat, earthRadius} from '../geo/lng_lat';\nimport type {LngLatLike} from '../geo/lng_lat';\nimport {type IMercatorCoordinate} from '@maplibre/maplibre-gl-style-spec';\n\n/*\n * The average circumference of the world in meters.\n */\nconst earthCircumference = 2 * Math.PI * earthRadius; // meters\n\n/*\n * The circumference at a line of latitude in meters.\n */\nfunction circumferenceAtLatitude(latitude: number) {\n return earthCircumference * Math.cos(latitude * Math.PI / 180);\n}\n\nexport function mercatorXfromLng(lng: number) {\n return (180 + lng) / 360;\n}\n\nexport function mercatorYfromLat(lat: number) {\n return (180 - (180 / Math.PI * Math.log(Math.tan(Math.PI / 4 + lat * Math.PI / 360)))) / 360;\n}\n\nexport function mercatorZfromAltitude(altitude: number, lat: number) {\n return altitude / circumferenceAtLatitude(lat);\n}\n\nexport function lngFromMercatorX(x: number) {\n return x * 360 - 180;\n}\n\nexport function latFromMercatorY(y: number) {\n const y2 = 180 - y * 360;\n return 360 / Math.PI * Math.atan(Math.exp(y2 * Math.PI / 180)) - 90;\n}\n\nexport function altitudeFromMercatorZ(z: number, y: number) {\n return z * circumferenceAtLatitude(latFromMercatorY(y));\n}\n\n/**\n * Determine the Mercator scale factor for a given latitude, see\n * https://en.wikipedia.org/wiki/Mercator_projection#Scale_factor\n *\n * At the equator the scale factor will be 1, which increases at higher latitudes.\n *\n * @param lat - Latitude\n * @returns scale factor\n */\nexport function mercatorScale(lat: number) {\n return 1 / Math.cos(lat * Math.PI / 180);\n}\n\n/**\n * A `MercatorCoordinate` object represents a projected three dimensional position.\n *\n * `MercatorCoordinate` uses the web mercator projection ([EPSG:3857](https://epsg.io/3857)) with slightly different units:\n *\n * - the size of 1 unit is the width of the projected world instead of the \"mercator meter\"\n * - the origin of the coordinate space is at the north-west corner instead of the middle\n *\n * For example, `MercatorCoordinate(0, 0, 0)` is the north-west corner of the mercator world and\n * `MercatorCoordinate(1, 1, 0)` is the south-east corner. If you are familiar with\n * [vector tiles](https://github.com/mapbox/vector-tile-spec) it may be helpful to think\n * of the coordinate space as the `0/0/0` tile with an extent of `1`.\n *\n * The `z` dimension of `MercatorCoordinate` is conformal. A cube in the mercator coordinate space would be rendered as a cube.\n *\n * @group Geography and Geometry\n *\n * @example\n * ```ts\n * let nullIsland = new MercatorCoordinate(0.5, 0.5, 0);\n * ```\n * @see [Add a custom style layer](https://maplibre.org/maplibre-gl-js/docs/examples/custom-style-layer/)\n */\nexport class MercatorCoordinate implements IMercatorCoordinate {\n x: number;\n y: number;\n z: number;\n\n /**\n * @param x - The x component of the position.\n * @param y - The y component of the position.\n * @param z - The z component of the position.\n */\n constructor(x: number, y: number, z: number = 0) {\n this.x = +x;\n this.y = +y;\n this.z = +z;\n }\n\n /**\n * Project a `LngLat` to a `MercatorCoordinate`.\n *\n * @param lngLatLike - The location to project.\n * @param altitude - The altitude in meters of the position.\n * @returns The projected mercator coordinate.\n * @example\n * ```ts\n * let coord = MercatorCoordinate.fromLngLat({ lng: 0, lat: 0}, 0);\n * coord; // MercatorCoordinate(0.5, 0.5, 0)\n * ```\n */\n static fromLngLat(lngLatLike: LngLatLike, altitude: number = 0): MercatorCoordinate {\n const lngLat = LngLat.convert(lngLatLike);\n\n return new MercatorCoordinate(\n mercatorXfromLng(lngLat.lng),\n mercatorYfromLat(lngLat.lat),\n mercatorZfromAltitude(altitude, lngLat.lat));\n }\n\n /**\n * Returns the `LngLat` for the coordinate.\n *\n * @returns The `LngLat` object.\n * @example\n * ```ts\n * let coord = new MercatorCoordinate(0.5, 0.5, 0);\n * let lngLat = coord.toLngLat(); // LngLat(0, 0)\n * ```\n */\n toLngLat() {\n return new LngLat(\n lngFromMercatorX(this.x),\n latFromMercatorY(this.y));\n }\n\n /**\n * Returns the altitude in meters of the coordinate.\n *\n * @returns The altitude in meters.\n * @example\n * ```ts\n * let coord = new MercatorCoordinate(0, 0, 0.02);\n * coord.toAltitude(); // 6914.281956295339\n * ```\n */\n toAltitude(): number {\n return altitudeFromMercatorZ(this.z, this.y);\n }\n\n /**\n * Returns the distance of 1 meter in `MercatorCoordinate` units at this latitude.\n *\n * For coordinates in real world units using meters, this naturally provides the scale\n * to transform into `MercatorCoordinate`s.\n *\n * @returns Distance of 1 meter in `MercatorCoordinate` units.\n */\n meterInMercatorCoordinateUnits(): number {\n // 1 meter / circumference at equator in meters * Mercator projection scale factor at this latitude\n return 1 / earthCircumference * mercatorScale(latFromMercatorY(this.y));\n }\n}\n","export { getURL, getTileBBox, getMercCoords };\n\n\n/**\n * getURL\n *\n * @param {String} baseUrl Base url of the WMS server\n * @param {String} layer Layer name\n * @param {Number} x Tile coordinate x\n * @param {Number} y Tile coordinate y\n * @param {Number} z Tile zoom\n * @param {Object} [options]\n * @param {String} [options.format='image/png']\n * @param {String} [options.service='WMS']\n * @param {String} [options.version='1.1.1']\n * @param {String} [options.request='GetMap']\n * @param {String} [options.srs='EPSG:3857']\n * @param {Number} [options.width='256']\n * @param {Number} [options.height='256']\n * @returns {String} url\n * @example\n * var baseUrl = 'http://geodata.state.nj.us/imagerywms/Natural2015';\n * var layer = 'Natural2015';\n * var url = whoots.getURL(baseUrl, layer, 154308, 197167, 19);\n */\nfunction getURL(baseUrl, layer, x, y, z, options) {\n options = options || {};\n\n var url = baseUrl + '?' + [\n 'bbox=' + getTileBBox(x, y, z),\n 'format=' + (options.format || 'image/png'),\n 'service=' + (options.service || 'WMS'),\n 'version=' + (options.version || '1.1.1'),\n 'request=' + (options.request || 'GetMap'),\n 'srs=' + (options.srs || 'EPSG:3857'),\n 'width=' + (options.width || 256),\n 'height=' + (options.height || 256),\n 'layers=' + layer\n ].join('&');\n\n return url;\n}\n\n\n/**\n * getTileBBox\n *\n * @param {Number} x Tile coordinate x\n * @param {Number} y Tile coordinate y\n * @param {Number} z Tile zoom\n * @returns {String} String of the bounding box\n */\nfunction getTileBBox(x, y, z) {\n // for Google/OSM tile scheme we need to alter the y\n y = (Math.pow(2, z) - y - 1);\n\n var min = getMercCoords(x * 256, y * 256, z),\n max = getMercCoords((x + 1) * 256, (y + 1) * 256, z);\n\n return min[0] + ',' + min[1] + ',' + max[0] + ',' + max[1];\n}\n\n\n/**\n * getMercCoords\n *\n * @param {Number} x Pixel coordinate x\n * @param {Number} y Pixel coordinate y\n * @param {Number} z Tile zoom\n * @returns {Array} [x, y]\n */\nfunction getMercCoords(x, y, z) {\n var resolution = (2 * Math.PI * 6378137 / 256) / Math.pow(2, z),\n merc_x = (x * resolution - 2 * Math.PI * 6378137 / 2.0),\n merc_y = (y * resolution - 2 * Math.PI * 6378137 / 2.0);\n\n return [merc_x, merc_y];\n}\n","/*\nThis file was copied from https://github.com/mapbox/grid-index and was\nmigrated from JavaScript to TypeScript.\n\nCopyright (c) 2016, Mapbox\n\nPermission to use, copy, modify, and/or distribute this software for any purpose\nwith or without fee is hereby granted, provided that the above copyright notice\nand this permission notice appear in all copies.\n\nTHE SOFTWARE IS PROVIDED \"AS IS\" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH\nREGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND\nFITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,\nINDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS\nOF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER\nTORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF\nTHIS SOFTWARE.\n*/\n\nconst NUM_PARAMS = 3;\n\nexport type SerializedGrid = {\n buffer: ArrayBuffer;\n};\n\nexport class TransferableGridIndex {\n cells: number[][];\n arrayBuffer: ArrayBuffer;\n d: number;\n keys: number[];\n bboxes: number[];\n n: number;\n extent: number;\n padding: number;\n scale: any;\n uid: number;\n min: number;\n max: number;\n\n constructor(extent: number | ArrayBuffer, n?: number, padding?: number) {\n const cells = this.cells = [];\n\n if (extent instanceof ArrayBuffer) {\n this.arrayBuffer = extent;\n const array = new Int32Array(this.arrayBuffer);\n extent = array[0];\n n = array[1];\n padding = array[2];\n\n this.d = n + 2 * padding;\n for (let k = 0; k < this.d * this.d; k++) {\n const start = array[NUM_PARAMS + k];\n const end = array[NUM_PARAMS + k + 1];\n cells.push(start === end ? null : array.subarray(start, end));\n }\n const keysOffset = array[NUM_PARAMS + cells.length];\n const bboxesOffset = array[NUM_PARAMS + cells.length + 1];\n this.keys = array.subarray(keysOffset, bboxesOffset) as any as number[];\n this.bboxes = array.subarray(bboxesOffset) as any as number[];\n\n this.insert = this._insertReadonly;\n\n } else {\n this.d = n + 2 * padding;\n for (let i = 0; i < this.d * this.d; i++) {\n cells.push([]);\n }\n this.keys = [];\n this.bboxes = [];\n }\n\n this.n = n;\n this.extent = extent;\n this.padding = padding;\n this.scale = n / extent;\n this.uid = 0;\n\n const p = (padding / n) * extent;\n this.min = -p;\n this.max = extent + p;\n }\n\n insert(key: number, x1: number, y1: number, x2: number, y2: number) {\n this._forEachCell(x1, y1, x2, y2, this._insertCell, this.uid++, undefined, undefined);\n this.keys.push(key);\n this.bboxes.push(x1);\n this.bboxes.push(y1);\n this.bboxes.push(x2);\n this.bboxes.push(y2);\n }\n\n _insertReadonly() {\n throw new Error('Cannot insert into a GridIndex created from an ArrayBuffer.');\n }\n\n _insertCell(x1: number, y1: number, x2: number, y2: number, cellIndex: number, uid: number) {\n this.cells[cellIndex].push(uid);\n }\n\n query(x1: number, y1: number, x2: number, y2: number, intersectionTest?: Function): number[] {\n const min = this.min;\n const max = this.max;\n if (x1 <= min && y1 <= min && max <= x2 && max <= y2 && !intersectionTest) {\n // We use `Array#slice` because `this.keys` may be a `Int32Array` and\n // some browsers (Safari and IE) do not support `TypedArray#slice`\n // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/TypedArray/slice#Browser_compatibility\n return Array.prototype.slice.call(this.keys);\n\n } else {\n const result = [];\n const seenUids = {};\n this._forEachCell(x1, y1, x2, y2, this._queryCell, result, seenUids, intersectionTest);\n return result;\n }\n }\n\n _queryCell(x1: number, y1: number, x2: number, y2:number, cellIndex:number, result, seenUids, intersectionTest: Function) {\n const cell = this.cells[cellIndex];\n if (cell !== null) {\n const keys = this.keys;\n const bboxes = this.bboxes;\n for (let u = 0; u < cell.length; u++) {\n const uid = cell[u];\n if (seenUids[uid] === undefined) {\n const offset = uid * 4;\n if (intersectionTest ?\n intersectionTest(bboxes[offset + 0], bboxes[offset + 1], bboxes[offset + 2], bboxes[offset + 3]) :\n ((x1 <= bboxes[offset + 2]) &&\n (y1 <= bboxes[offset + 3]) &&\n (x2 >= bboxes[offset + 0]) &&\n (y2 >= bboxes[offset + 1]))) {\n seenUids[uid] = true;\n result.push(keys[uid]);\n } else {\n seenUids[uid] = false;\n }\n }\n }\n }\n }\n\n _forEachCell(x1: number, y1: number, x2:number, y2:number, fn: Function, arg1, arg2, intersectionTest) {\n const cx1 = this._convertToCellCoord(x1);\n const cy1 = this._convertToCellCoord(y1);\n const cx2 = this._convertToCellCoord(x2);\n const cy2 = this._convertToCellCoord(y2);\n for (let x = cx1; x <= cx2; x++) {\n for (let y = cy1; y <= cy2; y++) {\n const cellIndex = this.d * y + x;\n if (intersectionTest && !intersectionTest(\n this._convertFromCellCoord(x),\n this._convertFromCellCoord(y),\n this._convertFromCellCoord(x + 1),\n this._convertFromCellCoord(y + 1))) continue;\n if (fn.call(this, x1, y1, x2, y2, cellIndex, arg1, arg2, intersectionTest)) return;\n }\n }\n }\n\n _convertFromCellCoord (x) {\n return (x - this.padding) / this.scale;\n }\n\n _convertToCellCoord(x) {\n return Math.max(0, Math.min(this.d - 1, Math.floor(x * this.scale) + this.padding));\n }\n\n toArrayBuffer(): ArrayBuffer {\n if (this.arrayBuffer) return this.arrayBuffer;\n\n const cells = this.cells;\n\n const metadataLength = NUM_PARAMS + this.cells.length + 1 + 1;\n let totalCellLength = 0;\n for (let i = 0; i < this.cells.length; i++) {\n totalCellLength += this.cells[i].length;\n }\n\n const array = new Int32Array(metadataLength + totalCellLength + this.keys.length + this.bboxes.length);\n array[0] = this.extent;\n array[1] = this.n;\n array[2] = this.padding;\n\n let offset = metadataLength;\n for (let k = 0; k < cells.length; k++) {\n const cell = cells[k];\n array[NUM_PARAMS + k] = offset;\n array.set(cell, offset);\n offset += cell.length;\n }\n\n array[NUM_PARAMS + cells.length] = offset;\n array.set(this.keys, offset);\n offset += this.keys.length;\n\n array[NUM_PARAMS + cells.length + 1] = offset;\n array.set(this.bboxes, offset);\n offset += this.bboxes.length;\n\n return array.buffer;\n }\n\n public static serialize(grid: TransferableGridIndex, transferables?: Array): SerializedGrid {\n const buffer = grid.toArrayBuffer();\n if (transferables) {\n transferables.push(buffer);\n }\n return {buffer};\n }\n\n public static deserialize(serialized: SerializedGrid): TransferableGridIndex {\n return new TransferableGridIndex(serialized.buffer);\n }\n}\n","var $version = 8;\nvar $root = {\n\tversion: {\n\t\trequired: true,\n\t\ttype: \"enum\",\n\t\tvalues: [\n\t\t\t8\n\t\t]\n\t},\n\tname: {\n\t\ttype: \"string\"\n\t},\n\tmetadata: {\n\t\ttype: \"*\"\n\t},\n\tcenter: {\n\t\ttype: \"array\",\n\t\tvalue: \"number\"\n\t},\n\tcenterAltitude: {\n\t\ttype: \"number\"\n\t},\n\tzoom: {\n\t\ttype: \"number\"\n\t},\n\tbearing: {\n\t\ttype: \"number\",\n\t\t\"default\": 0,\n\t\tperiod: 360,\n\t\tunits: \"degrees\"\n\t},\n\tpitch: {\n\t\ttype: \"number\",\n\t\t\"default\": 0,\n\t\tunits: \"degrees\"\n\t},\n\troll: {\n\t\ttype: \"number\",\n\t\t\"default\": 0,\n\t\tunits: \"degrees\"\n\t},\n\tlight: {\n\t\ttype: \"light\"\n\t},\n\tsky: {\n\t\ttype: \"sky\"\n\t},\n\tprojection: {\n\t\ttype: \"projection\"\n\t},\n\tterrain: {\n\t\ttype: \"terrain\"\n\t},\n\tsources: {\n\t\trequired: true,\n\t\ttype: \"sources\"\n\t},\n\tsprite: {\n\t\ttype: \"sprite\"\n\t},\n\tglyphs: {\n\t\ttype: \"string\"\n\t},\n\ttransition: {\n\t\ttype: \"transition\"\n\t},\n\tlayers: {\n\t\trequired: true,\n\t\ttype: \"array\",\n\t\tvalue: \"layer\"\n\t}\n};\nvar sources = {\n\t\"*\": {\n\t\ttype: \"source\"\n\t}\n};\nvar source = [\n\t\"source_vector\",\n\t\"source_raster\",\n\t\"source_raster_dem\",\n\t\"source_geojson\",\n\t\"source_video\",\n\t\"source_image\"\n];\nvar source_vector = {\n\ttype: {\n\t\trequired: true,\n\t\ttype: \"enum\",\n\t\tvalues: {\n\t\t\tvector: {\n\t\t\t}\n\t\t}\n\t},\n\turl: {\n\t\ttype: \"string\"\n\t},\n\ttiles: {\n\t\ttype: \"array\",\n\t\tvalue: \"string\"\n\t},\n\tbounds: {\n\t\ttype: \"array\",\n\t\tvalue: \"number\",\n\t\tlength: 4,\n\t\t\"default\": [\n\t\t\t-180,\n\t\t\t-85.051129,\n\t\t\t180,\n\t\t\t85.051129\n\t\t]\n\t},\n\tscheme: {\n\t\ttype: \"enum\",\n\t\tvalues: {\n\t\t\txyz: {\n\t\t\t},\n\t\t\ttms: {\n\t\t\t}\n\t\t},\n\t\t\"default\": \"xyz\"\n\t},\n\tminzoom: {\n\t\ttype: \"number\",\n\t\t\"default\": 0\n\t},\n\tmaxzoom: {\n\t\ttype: \"number\",\n\t\t\"default\": 22\n\t},\n\tattribution: {\n\t\ttype: \"string\"\n\t},\n\tpromoteId: {\n\t\ttype: \"promoteId\"\n\t},\n\tvolatile: {\n\t\ttype: \"boolean\",\n\t\t\"default\": false\n\t},\n\t\"*\": {\n\t\ttype: \"*\"\n\t}\n};\nvar source_raster = {\n\ttype: {\n\t\trequired: true,\n\t\ttype: \"enum\",\n\t\tvalues: {\n\t\t\traster: {\n\t\t\t}\n\t\t}\n\t},\n\turl: {\n\t\ttype: \"string\"\n\t},\n\ttiles: {\n\t\ttype: \"array\",\n\t\tvalue: \"string\"\n\t},\n\tbounds: {\n\t\ttype: \"array\",\n\t\tvalue: \"number\",\n\t\tlength: 4,\n\t\t\"default\": [\n\t\t\t-180,\n\t\t\t-85.051129,\n\t\t\t180,\n\t\t\t85.051129\n\t\t]\n\t},\n\tminzoom: {\n\t\ttype: \"number\",\n\t\t\"default\": 0\n\t},\n\tmaxzoom: {\n\t\ttype: \"number\",\n\t\t\"default\": 22\n\t},\n\ttileSize: {\n\t\ttype: \"number\",\n\t\t\"default\": 512,\n\t\tunits: \"pixels\"\n\t},\n\tscheme: {\n\t\ttype: \"enum\",\n\t\tvalues: {\n\t\t\txyz: {\n\t\t\t},\n\t\t\ttms: {\n\t\t\t}\n\t\t},\n\t\t\"default\": \"xyz\"\n\t},\n\tattribution: {\n\t\ttype: \"string\"\n\t},\n\tvolatile: {\n\t\ttype: \"boolean\",\n\t\t\"default\": false\n\t},\n\t\"*\": {\n\t\ttype: \"*\"\n\t}\n};\nvar source_raster_dem = {\n\ttype: {\n\t\trequired: true,\n\t\ttype: \"enum\",\n\t\tvalues: {\n\t\t\t\"raster-dem\": {\n\t\t\t}\n\t\t}\n\t},\n\turl: {\n\t\ttype: \"string\"\n\t},\n\ttiles: {\n\t\ttype: \"array\",\n\t\tvalue: \"string\"\n\t},\n\tbounds: {\n\t\ttype: \"array\",\n\t\tvalue: \"number\",\n\t\tlength: 4,\n\t\t\"default\": [\n\t\t\t-180,\n\t\t\t-85.051129,\n\t\t\t180,\n\t\t\t85.051129\n\t\t]\n\t},\n\tminzoom: {\n\t\ttype: \"number\",\n\t\t\"default\": 0\n\t},\n\tmaxzoom: {\n\t\ttype: \"number\",\n\t\t\"default\": 22\n\t},\n\ttileSize: {\n\t\ttype: \"number\",\n\t\t\"default\": 512,\n\t\tunits: \"pixels\"\n\t},\n\tattribution: {\n\t\ttype: \"string\"\n\t},\n\tencoding: {\n\t\ttype: \"enum\",\n\t\tvalues: {\n\t\t\tterrarium: {\n\t\t\t},\n\t\t\tmapbox: {\n\t\t\t},\n\t\t\tcustom: {\n\t\t\t}\n\t\t},\n\t\t\"default\": \"mapbox\"\n\t},\n\tredFactor: {\n\t\ttype: \"number\",\n\t\t\"default\": 1\n\t},\n\tblueFactor: {\n\t\ttype: \"number\",\n\t\t\"default\": 1\n\t},\n\tgreenFactor: {\n\t\ttype: \"number\",\n\t\t\"default\": 1\n\t},\n\tbaseShift: {\n\t\ttype: \"number\",\n\t\t\"default\": 0\n\t},\n\tvolatile: {\n\t\ttype: \"boolean\",\n\t\t\"default\": false\n\t},\n\t\"*\": {\n\t\ttype: \"*\"\n\t}\n};\nvar source_geojson = {\n\ttype: {\n\t\trequired: true,\n\t\ttype: \"enum\",\n\t\tvalues: {\n\t\t\tgeojson: {\n\t\t\t}\n\t\t}\n\t},\n\tdata: {\n\t\trequired: true,\n\t\ttype: \"*\"\n\t},\n\tmaxzoom: {\n\t\ttype: \"number\",\n\t\t\"default\": 18\n\t},\n\tattribution: {\n\t\ttype: \"string\"\n\t},\n\tbuffer: {\n\t\ttype: \"number\",\n\t\t\"default\": 128,\n\t\tmaximum: 512,\n\t\tminimum: 0\n\t},\n\tfilter: {\n\t\ttype: \"*\"\n\t},\n\ttolerance: {\n\t\ttype: \"number\",\n\t\t\"default\": 0.375\n\t},\n\tcluster: {\n\t\ttype: \"boolean\",\n\t\t\"default\": false\n\t},\n\tclusterRadius: {\n\t\ttype: \"number\",\n\t\t\"default\": 50,\n\t\tminimum: 0\n\t},\n\tclusterMaxZoom: {\n\t\ttype: \"number\"\n\t},\n\tclusterMinPoints: {\n\t\ttype: \"number\"\n\t},\n\tclusterProperties: {\n\t\ttype: \"*\"\n\t},\n\tlineMetrics: {\n\t\ttype: \"boolean\",\n\t\t\"default\": false\n\t},\n\tgenerateId: {\n\t\ttype: \"boolean\",\n\t\t\"default\": false\n\t},\n\tpromoteId: {\n\t\ttype: \"promoteId\"\n\t}\n};\nvar source_video = {\n\ttype: {\n\t\trequired: true,\n\t\ttype: \"enum\",\n\t\tvalues: {\n\t\t\tvideo: {\n\t\t\t}\n\t\t}\n\t},\n\turls: {\n\t\trequired: true,\n\t\ttype: \"array\",\n\t\tvalue: \"string\"\n\t},\n\tcoordinates: {\n\t\trequired: true,\n\t\ttype: \"array\",\n\t\tlength: 4,\n\t\tvalue: {\n\t\t\ttype: \"array\",\n\t\t\tlength: 2,\n\t\t\tvalue: \"number\"\n\t\t}\n\t}\n};\nvar source_image = {\n\ttype: {\n\t\trequired: true,\n\t\ttype: \"enum\",\n\t\tvalues: {\n\t\t\timage: {\n\t\t\t}\n\t\t}\n\t},\n\turl: {\n\t\trequired: true,\n\t\ttype: \"string\"\n\t},\n\tcoordinates: {\n\t\trequired: true,\n\t\ttype: \"array\",\n\t\tlength: 4,\n\t\tvalue: {\n\t\t\ttype: \"array\",\n\t\t\tlength: 2,\n\t\t\tvalue: \"number\"\n\t\t}\n\t}\n};\nvar layer = {\n\tid: {\n\t\ttype: \"string\",\n\t\trequired: true\n\t},\n\ttype: {\n\t\ttype: \"enum\",\n\t\tvalues: {\n\t\t\tfill: {\n\t\t\t},\n\t\t\tline: {\n\t\t\t},\n\t\t\tsymbol: {\n\t\t\t},\n\t\t\tcircle: {\n\t\t\t},\n\t\t\theatmap: {\n\t\t\t},\n\t\t\t\"fill-extrusion\": {\n\t\t\t},\n\t\t\traster: {\n\t\t\t},\n\t\t\thillshade: {\n\t\t\t},\n\t\t\tbackground: {\n\t\t\t}\n\t\t},\n\t\trequired: true\n\t},\n\tmetadata: {\n\t\ttype: \"*\"\n\t},\n\tsource: {\n\t\ttype: \"string\"\n\t},\n\t\"source-layer\": {\n\t\ttype: \"string\"\n\t},\n\tminzoom: {\n\t\ttype: \"number\",\n\t\tminimum: 0,\n\t\tmaximum: 24\n\t},\n\tmaxzoom: {\n\t\ttype: \"number\",\n\t\tminimum: 0,\n\t\tmaximum: 24\n\t},\n\tfilter: {\n\t\ttype: \"filter\"\n\t},\n\tlayout: {\n\t\ttype: \"layout\"\n\t},\n\tpaint: {\n\t\ttype: \"paint\"\n\t}\n};\nvar layout = [\n\t\"layout_fill\",\n\t\"layout_line\",\n\t\"layout_circle\",\n\t\"layout_heatmap\",\n\t\"layout_fill-extrusion\",\n\t\"layout_symbol\",\n\t\"layout_raster\",\n\t\"layout_hillshade\",\n\t\"layout_background\"\n];\nvar layout_background = {\n\tvisibility: {\n\t\ttype: \"enum\",\n\t\tvalues: {\n\t\t\tvisible: {\n\t\t\t},\n\t\t\tnone: {\n\t\t\t}\n\t\t},\n\t\t\"default\": \"visible\",\n\t\t\"property-type\": \"constant\"\n\t}\n};\nvar layout_fill = {\n\t\"fill-sort-key\": {\n\t\ttype: \"number\",\n\t\texpression: {\n\t\t\tinterpolated: false,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-driven\"\n\t},\n\tvisibility: {\n\t\ttype: \"enum\",\n\t\tvalues: {\n\t\t\tvisible: {\n\t\t\t},\n\t\t\tnone: {\n\t\t\t}\n\t\t},\n\t\t\"default\": \"visible\",\n\t\t\"property-type\": \"constant\"\n\t}\n};\nvar layout_circle = {\n\t\"circle-sort-key\": {\n\t\ttype: \"number\",\n\t\texpression: {\n\t\t\tinterpolated: false,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-driven\"\n\t},\n\tvisibility: {\n\t\ttype: \"enum\",\n\t\tvalues: {\n\t\t\tvisible: {\n\t\t\t},\n\t\t\tnone: {\n\t\t\t}\n\t\t},\n\t\t\"default\": \"visible\",\n\t\t\"property-type\": \"constant\"\n\t}\n};\nvar layout_heatmap = {\n\tvisibility: {\n\t\ttype: \"enum\",\n\t\tvalues: {\n\t\t\tvisible: {\n\t\t\t},\n\t\t\tnone: {\n\t\t\t}\n\t\t},\n\t\t\"default\": \"visible\",\n\t\t\"property-type\": \"constant\"\n\t}\n};\nvar layout_line = {\n\t\"line-cap\": {\n\t\ttype: \"enum\",\n\t\tvalues: {\n\t\t\tbutt: {\n\t\t\t},\n\t\t\tround: {\n\t\t\t},\n\t\t\tsquare: {\n\t\t\t}\n\t\t},\n\t\t\"default\": \"butt\",\n\t\texpression: {\n\t\t\tinterpolated: false,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"line-join\": {\n\t\ttype: \"enum\",\n\t\tvalues: {\n\t\t\tbevel: {\n\t\t\t},\n\t\t\tround: {\n\t\t\t},\n\t\t\tmiter: {\n\t\t\t}\n\t\t},\n\t\t\"default\": \"miter\",\n\t\texpression: {\n\t\t\tinterpolated: false,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-driven\"\n\t},\n\t\"line-miter-limit\": {\n\t\ttype: \"number\",\n\t\t\"default\": 2,\n\t\trequires: [\n\t\t\t{\n\t\t\t\t\"line-join\": \"miter\"\n\t\t\t}\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"line-round-limit\": {\n\t\ttype: \"number\",\n\t\t\"default\": 1.05,\n\t\trequires: [\n\t\t\t{\n\t\t\t\t\"line-join\": \"round\"\n\t\t\t}\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"line-sort-key\": {\n\t\ttype: \"number\",\n\t\texpression: {\n\t\t\tinterpolated: false,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-driven\"\n\t},\n\tvisibility: {\n\t\ttype: \"enum\",\n\t\tvalues: {\n\t\t\tvisible: {\n\t\t\t},\n\t\t\tnone: {\n\t\t\t}\n\t\t},\n\t\t\"default\": \"visible\",\n\t\t\"property-type\": \"constant\"\n\t}\n};\nvar layout_symbol = {\n\t\"symbol-placement\": {\n\t\ttype: \"enum\",\n\t\tvalues: {\n\t\t\tpoint: {\n\t\t\t},\n\t\t\tline: {\n\t\t\t},\n\t\t\t\"line-center\": {\n\t\t\t}\n\t\t},\n\t\t\"default\": \"point\",\n\t\texpression: {\n\t\t\tinterpolated: false,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"symbol-spacing\": {\n\t\ttype: \"number\",\n\t\t\"default\": 250,\n\t\tminimum: 1,\n\t\tunits: \"pixels\",\n\t\trequires: [\n\t\t\t{\n\t\t\t\t\"symbol-placement\": \"line\"\n\t\t\t}\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"symbol-avoid-edges\": {\n\t\ttype: \"boolean\",\n\t\t\"default\": false,\n\t\texpression: {\n\t\t\tinterpolated: false,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"symbol-sort-key\": {\n\t\ttype: \"number\",\n\t\texpression: {\n\t\t\tinterpolated: false,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-driven\"\n\t},\n\t\"symbol-z-order\": {\n\t\ttype: \"enum\",\n\t\tvalues: {\n\t\t\tauto: {\n\t\t\t},\n\t\t\t\"viewport-y\": {\n\t\t\t},\n\t\t\tsource: {\n\t\t\t}\n\t\t},\n\t\t\"default\": \"auto\",\n\t\texpression: {\n\t\t\tinterpolated: false,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"icon-allow-overlap\": {\n\t\ttype: \"boolean\",\n\t\t\"default\": false,\n\t\trequires: [\n\t\t\t\"icon-image\",\n\t\t\t{\n\t\t\t\t\"!\": \"icon-overlap\"\n\t\t\t}\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: false,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"icon-overlap\": {\n\t\ttype: \"enum\",\n\t\tvalues: {\n\t\t\tnever: {\n\t\t\t},\n\t\t\talways: {\n\t\t\t},\n\t\t\tcooperative: {\n\t\t\t}\n\t\t},\n\t\trequires: [\n\t\t\t\"icon-image\"\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: false,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"icon-ignore-placement\": {\n\t\ttype: \"boolean\",\n\t\t\"default\": false,\n\t\trequires: [\n\t\t\t\"icon-image\"\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: false,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"icon-optional\": {\n\t\ttype: \"boolean\",\n\t\t\"default\": false,\n\t\trequires: [\n\t\t\t\"icon-image\",\n\t\t\t\"text-field\"\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: false,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"icon-rotation-alignment\": {\n\t\ttype: \"enum\",\n\t\tvalues: {\n\t\t\tmap: {\n\t\t\t},\n\t\t\tviewport: {\n\t\t\t},\n\t\t\tauto: {\n\t\t\t}\n\t\t},\n\t\t\"default\": \"auto\",\n\t\trequires: [\n\t\t\t\"icon-image\"\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: false,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"icon-size\": {\n\t\ttype: \"number\",\n\t\t\"default\": 1,\n\t\tminimum: 0,\n\t\tunits: \"factor of the original icon size\",\n\t\trequires: [\n\t\t\t\"icon-image\"\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-driven\"\n\t},\n\t\"icon-text-fit\": {\n\t\ttype: \"enum\",\n\t\tvalues: {\n\t\t\tnone: {\n\t\t\t},\n\t\t\twidth: {\n\t\t\t},\n\t\t\theight: {\n\t\t\t},\n\t\t\tboth: {\n\t\t\t}\n\t\t},\n\t\t\"default\": \"none\",\n\t\trequires: [\n\t\t\t\"icon-image\",\n\t\t\t\"text-field\"\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: false,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"icon-text-fit-padding\": {\n\t\ttype: \"array\",\n\t\tvalue: \"number\",\n\t\tlength: 4,\n\t\t\"default\": [\n\t\t\t0,\n\t\t\t0,\n\t\t\t0,\n\t\t\t0\n\t\t],\n\t\tunits: \"pixels\",\n\t\trequires: [\n\t\t\t\"icon-image\",\n\t\t\t\"text-field\",\n\t\t\t{\n\t\t\t\t\"icon-text-fit\": [\n\t\t\t\t\t\"both\",\n\t\t\t\t\t\"width\",\n\t\t\t\t\t\"height\"\n\t\t\t\t]\n\t\t\t}\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"icon-image\": {\n\t\ttype: \"resolvedImage\",\n\t\ttokens: true,\n\t\texpression: {\n\t\t\tinterpolated: false,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-driven\"\n\t},\n\t\"icon-rotate\": {\n\t\ttype: \"number\",\n\t\t\"default\": 0,\n\t\tperiod: 360,\n\t\tunits: \"degrees\",\n\t\trequires: [\n\t\t\t\"icon-image\"\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-driven\"\n\t},\n\t\"icon-padding\": {\n\t\ttype: \"padding\",\n\t\t\"default\": [\n\t\t\t2\n\t\t],\n\t\tunits: \"pixels\",\n\t\trequires: [\n\t\t\t\"icon-image\"\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-driven\"\n\t},\n\t\"icon-keep-upright\": {\n\t\ttype: \"boolean\",\n\t\t\"default\": false,\n\t\trequires: [\n\t\t\t\"icon-image\",\n\t\t\t{\n\t\t\t\t\"icon-rotation-alignment\": \"map\"\n\t\t\t},\n\t\t\t{\n\t\t\t\t\"symbol-placement\": [\n\t\t\t\t\t\"line\",\n\t\t\t\t\t\"line-center\"\n\t\t\t\t]\n\t\t\t}\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: false,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"icon-offset\": {\n\t\ttype: \"array\",\n\t\tvalue: \"number\",\n\t\tlength: 2,\n\t\t\"default\": [\n\t\t\t0,\n\t\t\t0\n\t\t],\n\t\trequires: [\n\t\t\t\"icon-image\"\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-driven\"\n\t},\n\t\"icon-anchor\": {\n\t\ttype: \"enum\",\n\t\tvalues: {\n\t\t\tcenter: {\n\t\t\t},\n\t\t\tleft: {\n\t\t\t},\n\t\t\tright: {\n\t\t\t},\n\t\t\ttop: {\n\t\t\t},\n\t\t\tbottom: {\n\t\t\t},\n\t\t\t\"top-left\": {\n\t\t\t},\n\t\t\t\"top-right\": {\n\t\t\t},\n\t\t\t\"bottom-left\": {\n\t\t\t},\n\t\t\t\"bottom-right\": {\n\t\t\t}\n\t\t},\n\t\t\"default\": \"center\",\n\t\trequires: [\n\t\t\t\"icon-image\"\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: false,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-driven\"\n\t},\n\t\"icon-pitch-alignment\": {\n\t\ttype: \"enum\",\n\t\tvalues: {\n\t\t\tmap: {\n\t\t\t},\n\t\t\tviewport: {\n\t\t\t},\n\t\t\tauto: {\n\t\t\t}\n\t\t},\n\t\t\"default\": \"auto\",\n\t\trequires: [\n\t\t\t\"icon-image\"\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: false,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"text-pitch-alignment\": {\n\t\ttype: \"enum\",\n\t\tvalues: {\n\t\t\tmap: {\n\t\t\t},\n\t\t\tviewport: {\n\t\t\t},\n\t\t\tauto: {\n\t\t\t}\n\t\t},\n\t\t\"default\": \"auto\",\n\t\trequires: [\n\t\t\t\"text-field\"\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: false,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"text-rotation-alignment\": {\n\t\ttype: \"enum\",\n\t\tvalues: {\n\t\t\tmap: {\n\t\t\t},\n\t\t\tviewport: {\n\t\t\t},\n\t\t\t\"viewport-glyph\": {\n\t\t\t},\n\t\t\tauto: {\n\t\t\t}\n\t\t},\n\t\t\"default\": \"auto\",\n\t\trequires: [\n\t\t\t\"text-field\"\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: false,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"text-field\": {\n\t\ttype: \"formatted\",\n\t\t\"default\": \"\",\n\t\ttokens: true,\n\t\texpression: {\n\t\t\tinterpolated: false,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-driven\"\n\t},\n\t\"text-font\": {\n\t\ttype: \"array\",\n\t\tvalue: \"string\",\n\t\t\"default\": [\n\t\t\t\"Open Sans Regular\",\n\t\t\t\"Arial Unicode MS Regular\"\n\t\t],\n\t\trequires: [\n\t\t\t\"text-field\"\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: false,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-driven\"\n\t},\n\t\"text-size\": {\n\t\ttype: \"number\",\n\t\t\"default\": 16,\n\t\tminimum: 0,\n\t\tunits: \"pixels\",\n\t\trequires: [\n\t\t\t\"text-field\"\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-driven\"\n\t},\n\t\"text-max-width\": {\n\t\ttype: \"number\",\n\t\t\"default\": 10,\n\t\tminimum: 0,\n\t\tunits: \"ems\",\n\t\trequires: [\n\t\t\t\"text-field\"\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-driven\"\n\t},\n\t\"text-line-height\": {\n\t\ttype: \"number\",\n\t\t\"default\": 1.2,\n\t\tunits: \"ems\",\n\t\trequires: [\n\t\t\t\"text-field\"\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"text-letter-spacing\": {\n\t\ttype: \"number\",\n\t\t\"default\": 0,\n\t\tunits: \"ems\",\n\t\trequires: [\n\t\t\t\"text-field\"\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-driven\"\n\t},\n\t\"text-justify\": {\n\t\ttype: \"enum\",\n\t\tvalues: {\n\t\t\tauto: {\n\t\t\t},\n\t\t\tleft: {\n\t\t\t},\n\t\t\tcenter: {\n\t\t\t},\n\t\t\tright: {\n\t\t\t}\n\t\t},\n\t\t\"default\": \"center\",\n\t\trequires: [\n\t\t\t\"text-field\"\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: false,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-driven\"\n\t},\n\t\"text-radial-offset\": {\n\t\ttype: \"number\",\n\t\tunits: \"ems\",\n\t\t\"default\": 0,\n\t\trequires: [\n\t\t\t\"text-field\"\n\t\t],\n\t\t\"property-type\": \"data-driven\",\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\"\n\t\t\t]\n\t\t}\n\t},\n\t\"text-variable-anchor\": {\n\t\ttype: \"array\",\n\t\tvalue: \"enum\",\n\t\tvalues: {\n\t\t\tcenter: {\n\t\t\t},\n\t\t\tleft: {\n\t\t\t},\n\t\t\tright: {\n\t\t\t},\n\t\t\ttop: {\n\t\t\t},\n\t\t\tbottom: {\n\t\t\t},\n\t\t\t\"top-left\": {\n\t\t\t},\n\t\t\t\"top-right\": {\n\t\t\t},\n\t\t\t\"bottom-left\": {\n\t\t\t},\n\t\t\t\"bottom-right\": {\n\t\t\t}\n\t\t},\n\t\trequires: [\n\t\t\t\"text-field\",\n\t\t\t{\n\t\t\t\t\"symbol-placement\": [\n\t\t\t\t\t\"point\"\n\t\t\t\t]\n\t\t\t}\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: false,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"text-variable-anchor-offset\": {\n\t\ttype: \"variableAnchorOffsetCollection\",\n\t\trequires: [\n\t\t\t\"text-field\",\n\t\t\t{\n\t\t\t\t\"symbol-placement\": [\n\t\t\t\t\t\"point\"\n\t\t\t\t]\n\t\t\t}\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-driven\"\n\t},\n\t\"text-anchor\": {\n\t\ttype: \"enum\",\n\t\tvalues: {\n\t\t\tcenter: {\n\t\t\t},\n\t\t\tleft: {\n\t\t\t},\n\t\t\tright: {\n\t\t\t},\n\t\t\ttop: {\n\t\t\t},\n\t\t\tbottom: {\n\t\t\t},\n\t\t\t\"top-left\": {\n\t\t\t},\n\t\t\t\"top-right\": {\n\t\t\t},\n\t\t\t\"bottom-left\": {\n\t\t\t},\n\t\t\t\"bottom-right\": {\n\t\t\t}\n\t\t},\n\t\t\"default\": \"center\",\n\t\trequires: [\n\t\t\t\"text-field\",\n\t\t\t{\n\t\t\t\t\"!\": \"text-variable-anchor\"\n\t\t\t}\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: false,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-driven\"\n\t},\n\t\"text-max-angle\": {\n\t\ttype: \"number\",\n\t\t\"default\": 45,\n\t\tunits: \"degrees\",\n\t\trequires: [\n\t\t\t\"text-field\",\n\t\t\t{\n\t\t\t\t\"symbol-placement\": [\n\t\t\t\t\t\"line\",\n\t\t\t\t\t\"line-center\"\n\t\t\t\t]\n\t\t\t}\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"text-writing-mode\": {\n\t\ttype: \"array\",\n\t\tvalue: \"enum\",\n\t\tvalues: {\n\t\t\thorizontal: {\n\t\t\t},\n\t\t\tvertical: {\n\t\t\t}\n\t\t},\n\t\trequires: [\n\t\t\t\"text-field\",\n\t\t\t{\n\t\t\t\t\"symbol-placement\": [\n\t\t\t\t\t\"point\"\n\t\t\t\t]\n\t\t\t}\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: false,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"text-rotate\": {\n\t\ttype: \"number\",\n\t\t\"default\": 0,\n\t\tperiod: 360,\n\t\tunits: \"degrees\",\n\t\trequires: [\n\t\t\t\"text-field\"\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-driven\"\n\t},\n\t\"text-padding\": {\n\t\ttype: \"number\",\n\t\t\"default\": 2,\n\t\tminimum: 0,\n\t\tunits: \"pixels\",\n\t\trequires: [\n\t\t\t\"text-field\"\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"text-keep-upright\": {\n\t\ttype: \"boolean\",\n\t\t\"default\": true,\n\t\trequires: [\n\t\t\t\"text-field\",\n\t\t\t{\n\t\t\t\t\"text-rotation-alignment\": \"map\"\n\t\t\t},\n\t\t\t{\n\t\t\t\t\"symbol-placement\": [\n\t\t\t\t\t\"line\",\n\t\t\t\t\t\"line-center\"\n\t\t\t\t]\n\t\t\t}\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: false,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"text-transform\": {\n\t\ttype: \"enum\",\n\t\tvalues: {\n\t\t\tnone: {\n\t\t\t},\n\t\t\tuppercase: {\n\t\t\t},\n\t\t\tlowercase: {\n\t\t\t}\n\t\t},\n\t\t\"default\": \"none\",\n\t\trequires: [\n\t\t\t\"text-field\"\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: false,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-driven\"\n\t},\n\t\"text-offset\": {\n\t\ttype: \"array\",\n\t\tvalue: \"number\",\n\t\tunits: \"ems\",\n\t\tlength: 2,\n\t\t\"default\": [\n\t\t\t0,\n\t\t\t0\n\t\t],\n\t\trequires: [\n\t\t\t\"text-field\",\n\t\t\t{\n\t\t\t\t\"!\": \"text-radial-offset\"\n\t\t\t}\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-driven\"\n\t},\n\t\"text-allow-overlap\": {\n\t\ttype: \"boolean\",\n\t\t\"default\": false,\n\t\trequires: [\n\t\t\t\"text-field\",\n\t\t\t{\n\t\t\t\t\"!\": \"text-overlap\"\n\t\t\t}\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: false,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"text-overlap\": {\n\t\ttype: \"enum\",\n\t\tvalues: {\n\t\t\tnever: {\n\t\t\t},\n\t\t\talways: {\n\t\t\t},\n\t\t\tcooperative: {\n\t\t\t}\n\t\t},\n\t\trequires: [\n\t\t\t\"text-field\"\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: false,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"text-ignore-placement\": {\n\t\ttype: \"boolean\",\n\t\t\"default\": false,\n\t\trequires: [\n\t\t\t\"text-field\"\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: false,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"text-optional\": {\n\t\ttype: \"boolean\",\n\t\t\"default\": false,\n\t\trequires: [\n\t\t\t\"text-field\",\n\t\t\t\"icon-image\"\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: false,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\tvisibility: {\n\t\ttype: \"enum\",\n\t\tvalues: {\n\t\t\tvisible: {\n\t\t\t},\n\t\t\tnone: {\n\t\t\t}\n\t\t},\n\t\t\"default\": \"visible\",\n\t\t\"property-type\": \"constant\"\n\t}\n};\nvar layout_raster = {\n\tvisibility: {\n\t\ttype: \"enum\",\n\t\tvalues: {\n\t\t\tvisible: {\n\t\t\t},\n\t\t\tnone: {\n\t\t\t}\n\t\t},\n\t\t\"default\": \"visible\",\n\t\t\"property-type\": \"constant\"\n\t}\n};\nvar layout_hillshade = {\n\tvisibility: {\n\t\ttype: \"enum\",\n\t\tvalues: {\n\t\t\tvisible: {\n\t\t\t},\n\t\t\tnone: {\n\t\t\t}\n\t\t},\n\t\t\"default\": \"visible\",\n\t\t\"property-type\": \"constant\"\n\t}\n};\nvar filter = {\n\ttype: \"array\",\n\tvalue: \"*\"\n};\nvar filter_operator = {\n\ttype: \"enum\",\n\tvalues: {\n\t\t\"==\": {\n\t\t},\n\t\t\"!=\": {\n\t\t},\n\t\t\">\": {\n\t\t},\n\t\t\">=\": {\n\t\t},\n\t\t\"<\": {\n\t\t},\n\t\t\"<=\": {\n\t\t},\n\t\t\"in\": {\n\t\t},\n\t\t\"!in\": {\n\t\t},\n\t\tall: {\n\t\t},\n\t\tany: {\n\t\t},\n\t\tnone: {\n\t\t},\n\t\thas: {\n\t\t},\n\t\t\"!has\": {\n\t\t}\n\t}\n};\nvar geometry_type = {\n\ttype: \"enum\",\n\tvalues: {\n\t\tPoint: {\n\t\t},\n\t\tLineString: {\n\t\t},\n\t\tPolygon: {\n\t\t}\n\t}\n};\nvar function_stop = {\n\ttype: \"array\",\n\tminimum: 0,\n\tmaximum: 24,\n\tvalue: [\n\t\t\"number\",\n\t\t\"color\"\n\t],\n\tlength: 2\n};\nvar expression$1 = {\n\ttype: \"array\",\n\tvalue: \"*\",\n\tminimum: 1\n};\nvar light = {\n\tanchor: {\n\t\ttype: \"enum\",\n\t\t\"default\": \"viewport\",\n\t\tvalues: {\n\t\t\tmap: {\n\t\t\t},\n\t\t\tviewport: {\n\t\t\t}\n\t\t},\n\t\t\"property-type\": \"data-constant\",\n\t\ttransition: false,\n\t\texpression: {\n\t\t\tinterpolated: false,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t}\n\t},\n\tposition: {\n\t\ttype: \"array\",\n\t\t\"default\": [\n\t\t\t1.15,\n\t\t\t210,\n\t\t\t30\n\t\t],\n\t\tlength: 3,\n\t\tvalue: \"number\",\n\t\t\"property-type\": \"data-constant\",\n\t\ttransition: true,\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t}\n\t},\n\tcolor: {\n\t\ttype: \"color\",\n\t\t\"property-type\": \"data-constant\",\n\t\t\"default\": \"#ffffff\",\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\ttransition: true\n\t},\n\tintensity: {\n\t\ttype: \"number\",\n\t\t\"property-type\": \"data-constant\",\n\t\t\"default\": 0.5,\n\t\tminimum: 0,\n\t\tmaximum: 1,\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\ttransition: true\n\t}\n};\nvar sky = {\n\t\"sky-color\": {\n\t\ttype: \"color\",\n\t\t\"property-type\": \"data-constant\",\n\t\t\"default\": \"#88C6FC\",\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\ttransition: true\n\t},\n\t\"horizon-color\": {\n\t\ttype: \"color\",\n\t\t\"property-type\": \"data-constant\",\n\t\t\"default\": \"#ffffff\",\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\ttransition: true\n\t},\n\t\"fog-color\": {\n\t\ttype: \"color\",\n\t\t\"property-type\": \"data-constant\",\n\t\t\"default\": \"#ffffff\",\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\ttransition: true\n\t},\n\t\"fog-ground-blend\": {\n\t\ttype: \"number\",\n\t\t\"property-type\": \"data-constant\",\n\t\t\"default\": 0.5,\n\t\tminimum: 0,\n\t\tmaximum: 1,\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\ttransition: true\n\t},\n\t\"horizon-fog-blend\": {\n\t\ttype: \"number\",\n\t\t\"property-type\": \"data-constant\",\n\t\t\"default\": 0.8,\n\t\tminimum: 0,\n\t\tmaximum: 1,\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\ttransition: true\n\t},\n\t\"sky-horizon-blend\": {\n\t\ttype: \"number\",\n\t\t\"property-type\": \"data-constant\",\n\t\t\"default\": 0.8,\n\t\tminimum: 0,\n\t\tmaximum: 1,\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\ttransition: true\n\t},\n\t\"atmosphere-blend\": {\n\t\ttype: \"number\",\n\t\t\"property-type\": \"data-constant\",\n\t\t\"default\": 0.8,\n\t\tminimum: 0,\n\t\tmaximum: 1,\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\ttransition: true\n\t}\n};\nvar terrain = {\n\tsource: {\n\t\ttype: \"string\",\n\t\trequired: true\n\t},\n\texaggeration: {\n\t\ttype: \"number\",\n\t\tminimum: 0,\n\t\t\"default\": 1\n\t}\n};\nvar projection = {\n\ttype: {\n\t\ttype: \"projectionDefinition\",\n\t\t\"default\": \"mercator\",\n\t\t\"property-type\": \"data-constant\",\n\t\ttransition: false,\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t}\n\t}\n};\nvar paint = [\n\t\"paint_fill\",\n\t\"paint_line\",\n\t\"paint_circle\",\n\t\"paint_heatmap\",\n\t\"paint_fill-extrusion\",\n\t\"paint_symbol\",\n\t\"paint_raster\",\n\t\"paint_hillshade\",\n\t\"paint_background\"\n];\nvar paint_fill = {\n\t\"fill-antialias\": {\n\t\ttype: \"boolean\",\n\t\t\"default\": true,\n\t\texpression: {\n\t\t\tinterpolated: false,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"fill-opacity\": {\n\t\ttype: \"number\",\n\t\t\"default\": 1,\n\t\tminimum: 0,\n\t\tmaximum: 1,\n\t\ttransition: true,\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\",\n\t\t\t\t\"feature-state\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-driven\"\n\t},\n\t\"fill-color\": {\n\t\ttype: \"color\",\n\t\t\"default\": \"#000000\",\n\t\ttransition: true,\n\t\trequires: [\n\t\t\t{\n\t\t\t\t\"!\": \"fill-pattern\"\n\t\t\t}\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\",\n\t\t\t\t\"feature-state\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-driven\"\n\t},\n\t\"fill-outline-color\": {\n\t\ttype: \"color\",\n\t\ttransition: true,\n\t\trequires: [\n\t\t\t{\n\t\t\t\t\"!\": \"fill-pattern\"\n\t\t\t},\n\t\t\t{\n\t\t\t\t\"fill-antialias\": true\n\t\t\t}\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\",\n\t\t\t\t\"feature-state\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-driven\"\n\t},\n\t\"fill-translate\": {\n\t\ttype: \"array\",\n\t\tvalue: \"number\",\n\t\tlength: 2,\n\t\t\"default\": [\n\t\t\t0,\n\t\t\t0\n\t\t],\n\t\ttransition: true,\n\t\tunits: \"pixels\",\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"fill-translate-anchor\": {\n\t\ttype: \"enum\",\n\t\tvalues: {\n\t\t\tmap: {\n\t\t\t},\n\t\t\tviewport: {\n\t\t\t}\n\t\t},\n\t\t\"default\": \"map\",\n\t\trequires: [\n\t\t\t\"fill-translate\"\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: false,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"fill-pattern\": {\n\t\ttype: \"resolvedImage\",\n\t\ttransition: true,\n\t\texpression: {\n\t\t\tinterpolated: false,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"cross-faded-data-driven\"\n\t}\n};\nvar paint_line = {\n\t\"line-opacity\": {\n\t\ttype: \"number\",\n\t\t\"default\": 1,\n\t\tminimum: 0,\n\t\tmaximum: 1,\n\t\ttransition: true,\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\",\n\t\t\t\t\"feature-state\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-driven\"\n\t},\n\t\"line-color\": {\n\t\ttype: \"color\",\n\t\t\"default\": \"#000000\",\n\t\ttransition: true,\n\t\trequires: [\n\t\t\t{\n\t\t\t\t\"!\": \"line-pattern\"\n\t\t\t}\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\",\n\t\t\t\t\"feature-state\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-driven\"\n\t},\n\t\"line-translate\": {\n\t\ttype: \"array\",\n\t\tvalue: \"number\",\n\t\tlength: 2,\n\t\t\"default\": [\n\t\t\t0,\n\t\t\t0\n\t\t],\n\t\ttransition: true,\n\t\tunits: \"pixels\",\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"line-translate-anchor\": {\n\t\ttype: \"enum\",\n\t\tvalues: {\n\t\t\tmap: {\n\t\t\t},\n\t\t\tviewport: {\n\t\t\t}\n\t\t},\n\t\t\"default\": \"map\",\n\t\trequires: [\n\t\t\t\"line-translate\"\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: false,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"line-width\": {\n\t\ttype: \"number\",\n\t\t\"default\": 1,\n\t\tminimum: 0,\n\t\ttransition: true,\n\t\tunits: \"pixels\",\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\",\n\t\t\t\t\"feature-state\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-driven\"\n\t},\n\t\"line-gap-width\": {\n\t\ttype: \"number\",\n\t\t\"default\": 0,\n\t\tminimum: 0,\n\t\ttransition: true,\n\t\tunits: \"pixels\",\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\",\n\t\t\t\t\"feature-state\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-driven\"\n\t},\n\t\"line-offset\": {\n\t\ttype: \"number\",\n\t\t\"default\": 0,\n\t\ttransition: true,\n\t\tunits: \"pixels\",\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\",\n\t\t\t\t\"feature-state\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-driven\"\n\t},\n\t\"line-blur\": {\n\t\ttype: \"number\",\n\t\t\"default\": 0,\n\t\tminimum: 0,\n\t\ttransition: true,\n\t\tunits: \"pixels\",\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\",\n\t\t\t\t\"feature-state\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-driven\"\n\t},\n\t\"line-dasharray\": {\n\t\ttype: \"array\",\n\t\tvalue: \"number\",\n\t\tminimum: 0,\n\t\ttransition: true,\n\t\tunits: \"line widths\",\n\t\trequires: [\n\t\t\t{\n\t\t\t\t\"!\": \"line-pattern\"\n\t\t\t}\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: false,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"cross-faded\"\n\t},\n\t\"line-pattern\": {\n\t\ttype: \"resolvedImage\",\n\t\ttransition: true,\n\t\texpression: {\n\t\t\tinterpolated: false,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"cross-faded-data-driven\"\n\t},\n\t\"line-gradient\": {\n\t\ttype: \"color\",\n\t\ttransition: false,\n\t\trequires: [\n\t\t\t{\n\t\t\t\t\"!\": \"line-dasharray\"\n\t\t\t},\n\t\t\t{\n\t\t\t\t\"!\": \"line-pattern\"\n\t\t\t},\n\t\t\t{\n\t\t\t\tsource: \"geojson\",\n\t\t\t\thas: {\n\t\t\t\t\tlineMetrics: true\n\t\t\t\t}\n\t\t\t}\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"line-progress\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"color-ramp\"\n\t}\n};\nvar paint_circle = {\n\t\"circle-radius\": {\n\t\ttype: \"number\",\n\t\t\"default\": 5,\n\t\tminimum: 0,\n\t\ttransition: true,\n\t\tunits: \"pixels\",\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\",\n\t\t\t\t\"feature-state\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-driven\"\n\t},\n\t\"circle-color\": {\n\t\ttype: \"color\",\n\t\t\"default\": \"#000000\",\n\t\ttransition: true,\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\",\n\t\t\t\t\"feature-state\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-driven\"\n\t},\n\t\"circle-blur\": {\n\t\ttype: \"number\",\n\t\t\"default\": 0,\n\t\ttransition: true,\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\",\n\t\t\t\t\"feature-state\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-driven\"\n\t},\n\t\"circle-opacity\": {\n\t\ttype: \"number\",\n\t\t\"default\": 1,\n\t\tminimum: 0,\n\t\tmaximum: 1,\n\t\ttransition: true,\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\",\n\t\t\t\t\"feature-state\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-driven\"\n\t},\n\t\"circle-translate\": {\n\t\ttype: \"array\",\n\t\tvalue: \"number\",\n\t\tlength: 2,\n\t\t\"default\": [\n\t\t\t0,\n\t\t\t0\n\t\t],\n\t\ttransition: true,\n\t\tunits: \"pixels\",\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"circle-translate-anchor\": {\n\t\ttype: \"enum\",\n\t\tvalues: {\n\t\t\tmap: {\n\t\t\t},\n\t\t\tviewport: {\n\t\t\t}\n\t\t},\n\t\t\"default\": \"map\",\n\t\trequires: [\n\t\t\t\"circle-translate\"\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: false,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"circle-pitch-scale\": {\n\t\ttype: \"enum\",\n\t\tvalues: {\n\t\t\tmap: {\n\t\t\t},\n\t\t\tviewport: {\n\t\t\t}\n\t\t},\n\t\t\"default\": \"map\",\n\t\texpression: {\n\t\t\tinterpolated: false,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"circle-pitch-alignment\": {\n\t\ttype: \"enum\",\n\t\tvalues: {\n\t\t\tmap: {\n\t\t\t},\n\t\t\tviewport: {\n\t\t\t}\n\t\t},\n\t\t\"default\": \"viewport\",\n\t\texpression: {\n\t\t\tinterpolated: false,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"circle-stroke-width\": {\n\t\ttype: \"number\",\n\t\t\"default\": 0,\n\t\tminimum: 0,\n\t\ttransition: true,\n\t\tunits: \"pixels\",\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\",\n\t\t\t\t\"feature-state\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-driven\"\n\t},\n\t\"circle-stroke-color\": {\n\t\ttype: \"color\",\n\t\t\"default\": \"#000000\",\n\t\ttransition: true,\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\",\n\t\t\t\t\"feature-state\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-driven\"\n\t},\n\t\"circle-stroke-opacity\": {\n\t\ttype: \"number\",\n\t\t\"default\": 1,\n\t\tminimum: 0,\n\t\tmaximum: 1,\n\t\ttransition: true,\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\",\n\t\t\t\t\"feature-state\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-driven\"\n\t}\n};\nvar paint_heatmap = {\n\t\"heatmap-radius\": {\n\t\ttype: \"number\",\n\t\t\"default\": 30,\n\t\tminimum: 1,\n\t\ttransition: true,\n\t\tunits: \"pixels\",\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\",\n\t\t\t\t\"feature-state\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-driven\"\n\t},\n\t\"heatmap-weight\": {\n\t\ttype: \"number\",\n\t\t\"default\": 1,\n\t\tminimum: 0,\n\t\ttransition: false,\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\",\n\t\t\t\t\"feature-state\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-driven\"\n\t},\n\t\"heatmap-intensity\": {\n\t\ttype: \"number\",\n\t\t\"default\": 1,\n\t\tminimum: 0,\n\t\ttransition: true,\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"heatmap-color\": {\n\t\ttype: \"color\",\n\t\t\"default\": [\n\t\t\t\"interpolate\",\n\t\t\t[\n\t\t\t\t\"linear\"\n\t\t\t],\n\t\t\t[\n\t\t\t\t\"heatmap-density\"\n\t\t\t],\n\t\t\t0,\n\t\t\t\"rgba(0, 0, 255, 0)\",\n\t\t\t0.1,\n\t\t\t\"royalblue\",\n\t\t\t0.3,\n\t\t\t\"cyan\",\n\t\t\t0.5,\n\t\t\t\"lime\",\n\t\t\t0.7,\n\t\t\t\"yellow\",\n\t\t\t1,\n\t\t\t\"red\"\n\t\t],\n\t\ttransition: false,\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"heatmap-density\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"color-ramp\"\n\t},\n\t\"heatmap-opacity\": {\n\t\ttype: \"number\",\n\t\t\"default\": 1,\n\t\tminimum: 0,\n\t\tmaximum: 1,\n\t\ttransition: true,\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t}\n};\nvar paint_symbol = {\n\t\"icon-opacity\": {\n\t\ttype: \"number\",\n\t\t\"default\": 1,\n\t\tminimum: 0,\n\t\tmaximum: 1,\n\t\ttransition: true,\n\t\trequires: [\n\t\t\t\"icon-image\"\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\",\n\t\t\t\t\"feature-state\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-driven\"\n\t},\n\t\"icon-color\": {\n\t\ttype: \"color\",\n\t\t\"default\": \"#000000\",\n\t\ttransition: true,\n\t\trequires: [\n\t\t\t\"icon-image\"\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\",\n\t\t\t\t\"feature-state\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-driven\"\n\t},\n\t\"icon-halo-color\": {\n\t\ttype: \"color\",\n\t\t\"default\": \"rgba(0, 0, 0, 0)\",\n\t\ttransition: true,\n\t\trequires: [\n\t\t\t\"icon-image\"\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\",\n\t\t\t\t\"feature-state\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-driven\"\n\t},\n\t\"icon-halo-width\": {\n\t\ttype: \"number\",\n\t\t\"default\": 0,\n\t\tminimum: 0,\n\t\ttransition: true,\n\t\tunits: \"pixels\",\n\t\trequires: [\n\t\t\t\"icon-image\"\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\",\n\t\t\t\t\"feature-state\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-driven\"\n\t},\n\t\"icon-halo-blur\": {\n\t\ttype: \"number\",\n\t\t\"default\": 0,\n\t\tminimum: 0,\n\t\ttransition: true,\n\t\tunits: \"pixels\",\n\t\trequires: [\n\t\t\t\"icon-image\"\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\",\n\t\t\t\t\"feature-state\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-driven\"\n\t},\n\t\"icon-translate\": {\n\t\ttype: \"array\",\n\t\tvalue: \"number\",\n\t\tlength: 2,\n\t\t\"default\": [\n\t\t\t0,\n\t\t\t0\n\t\t],\n\t\ttransition: true,\n\t\tunits: \"pixels\",\n\t\trequires: [\n\t\t\t\"icon-image\"\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"icon-translate-anchor\": {\n\t\ttype: \"enum\",\n\t\tvalues: {\n\t\t\tmap: {\n\t\t\t},\n\t\t\tviewport: {\n\t\t\t}\n\t\t},\n\t\t\"default\": \"map\",\n\t\trequires: [\n\t\t\t\"icon-image\",\n\t\t\t\"icon-translate\"\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: false,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"text-opacity\": {\n\t\ttype: \"number\",\n\t\t\"default\": 1,\n\t\tminimum: 0,\n\t\tmaximum: 1,\n\t\ttransition: true,\n\t\trequires: [\n\t\t\t\"text-field\"\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\",\n\t\t\t\t\"feature-state\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-driven\"\n\t},\n\t\"text-color\": {\n\t\ttype: \"color\",\n\t\t\"default\": \"#000000\",\n\t\ttransition: true,\n\t\toverridable: true,\n\t\trequires: [\n\t\t\t\"text-field\"\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\",\n\t\t\t\t\"feature-state\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-driven\"\n\t},\n\t\"text-halo-color\": {\n\t\ttype: \"color\",\n\t\t\"default\": \"rgba(0, 0, 0, 0)\",\n\t\ttransition: true,\n\t\trequires: [\n\t\t\t\"text-field\"\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\",\n\t\t\t\t\"feature-state\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-driven\"\n\t},\n\t\"text-halo-width\": {\n\t\ttype: \"number\",\n\t\t\"default\": 0,\n\t\tminimum: 0,\n\t\ttransition: true,\n\t\tunits: \"pixels\",\n\t\trequires: [\n\t\t\t\"text-field\"\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\",\n\t\t\t\t\"feature-state\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-driven\"\n\t},\n\t\"text-halo-blur\": {\n\t\ttype: \"number\",\n\t\t\"default\": 0,\n\t\tminimum: 0,\n\t\ttransition: true,\n\t\tunits: \"pixels\",\n\t\trequires: [\n\t\t\t\"text-field\"\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\",\n\t\t\t\t\"feature-state\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-driven\"\n\t},\n\t\"text-translate\": {\n\t\ttype: \"array\",\n\t\tvalue: \"number\",\n\t\tlength: 2,\n\t\t\"default\": [\n\t\t\t0,\n\t\t\t0\n\t\t],\n\t\ttransition: true,\n\t\tunits: \"pixels\",\n\t\trequires: [\n\t\t\t\"text-field\"\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"text-translate-anchor\": {\n\t\ttype: \"enum\",\n\t\tvalues: {\n\t\t\tmap: {\n\t\t\t},\n\t\t\tviewport: {\n\t\t\t}\n\t\t},\n\t\t\"default\": \"map\",\n\t\trequires: [\n\t\t\t\"text-field\",\n\t\t\t\"text-translate\"\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: false,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t}\n};\nvar paint_raster = {\n\t\"raster-opacity\": {\n\t\ttype: \"number\",\n\t\t\"default\": 1,\n\t\tminimum: 0,\n\t\tmaximum: 1,\n\t\ttransition: true,\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"raster-hue-rotate\": {\n\t\ttype: \"number\",\n\t\t\"default\": 0,\n\t\tperiod: 360,\n\t\ttransition: true,\n\t\tunits: \"degrees\",\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"raster-brightness-min\": {\n\t\ttype: \"number\",\n\t\t\"default\": 0,\n\t\tminimum: 0,\n\t\tmaximum: 1,\n\t\ttransition: true,\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"raster-brightness-max\": {\n\t\ttype: \"number\",\n\t\t\"default\": 1,\n\t\tminimum: 0,\n\t\tmaximum: 1,\n\t\ttransition: true,\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"raster-saturation\": {\n\t\ttype: \"number\",\n\t\t\"default\": 0,\n\t\tminimum: -1,\n\t\tmaximum: 1,\n\t\ttransition: true,\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"raster-contrast\": {\n\t\ttype: \"number\",\n\t\t\"default\": 0,\n\t\tminimum: -1,\n\t\tmaximum: 1,\n\t\ttransition: true,\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"raster-resampling\": {\n\t\ttype: \"enum\",\n\t\tvalues: {\n\t\t\tlinear: {\n\t\t\t},\n\t\t\tnearest: {\n\t\t\t}\n\t\t},\n\t\t\"default\": \"linear\",\n\t\texpression: {\n\t\t\tinterpolated: false,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"raster-fade-duration\": {\n\t\ttype: \"number\",\n\t\t\"default\": 300,\n\t\tminimum: 0,\n\t\ttransition: false,\n\t\tunits: \"milliseconds\",\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t}\n};\nvar paint_hillshade = {\n\t\"hillshade-illumination-direction\": {\n\t\ttype: \"number\",\n\t\t\"default\": 335,\n\t\tminimum: 0,\n\t\tmaximum: 359,\n\t\ttransition: false,\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"hillshade-illumination-anchor\": {\n\t\ttype: \"enum\",\n\t\tvalues: {\n\t\t\tmap: {\n\t\t\t},\n\t\t\tviewport: {\n\t\t\t}\n\t\t},\n\t\t\"default\": \"viewport\",\n\t\texpression: {\n\t\t\tinterpolated: false,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"hillshade-exaggeration\": {\n\t\ttype: \"number\",\n\t\t\"default\": 0.5,\n\t\tminimum: 0,\n\t\tmaximum: 1,\n\t\ttransition: true,\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"hillshade-shadow-color\": {\n\t\ttype: \"color\",\n\t\t\"default\": \"#000000\",\n\t\ttransition: true,\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"hillshade-highlight-color\": {\n\t\ttype: \"color\",\n\t\t\"default\": \"#FFFFFF\",\n\t\ttransition: true,\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"hillshade-accent-color\": {\n\t\ttype: \"color\",\n\t\t\"default\": \"#000000\",\n\t\ttransition: true,\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t}\n};\nvar paint_background = {\n\t\"background-color\": {\n\t\ttype: \"color\",\n\t\t\"default\": \"#000000\",\n\t\ttransition: true,\n\t\trequires: [\n\t\t\t{\n\t\t\t\t\"!\": \"background-pattern\"\n\t\t\t}\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"background-pattern\": {\n\t\ttype: \"resolvedImage\",\n\t\ttransition: true,\n\t\texpression: {\n\t\t\tinterpolated: false,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"cross-faded\"\n\t},\n\t\"background-opacity\": {\n\t\ttype: \"number\",\n\t\t\"default\": 1,\n\t\tminimum: 0,\n\t\tmaximum: 1,\n\t\ttransition: true,\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t}\n};\nvar transition = {\n\tduration: {\n\t\ttype: \"number\",\n\t\t\"default\": 300,\n\t\tminimum: 0,\n\t\tunits: \"milliseconds\"\n\t},\n\tdelay: {\n\t\ttype: \"number\",\n\t\t\"default\": 0,\n\t\tminimum: 0,\n\t\tunits: \"milliseconds\"\n\t}\n};\nvar promoteId = {\n\t\"*\": {\n\t\ttype: \"string\"\n\t}\n};\nvar v8Spec = {\n\t$version: $version,\n\t$root: $root,\n\tsources: sources,\n\tsource: source,\n\tsource_vector: source_vector,\n\tsource_raster: source_raster,\n\tsource_raster_dem: source_raster_dem,\n\tsource_geojson: source_geojson,\n\tsource_video: source_video,\n\tsource_image: source_image,\n\tlayer: layer,\n\tlayout: layout,\n\tlayout_background: layout_background,\n\tlayout_fill: layout_fill,\n\tlayout_circle: layout_circle,\n\tlayout_heatmap: layout_heatmap,\n\t\"layout_fill-extrusion\": {\n\tvisibility: {\n\t\ttype: \"enum\",\n\t\tvalues: {\n\t\t\tvisible: {\n\t\t\t},\n\t\t\tnone: {\n\t\t\t}\n\t\t},\n\t\t\"default\": \"visible\",\n\t\t\"property-type\": \"constant\"\n\t}\n},\n\tlayout_line: layout_line,\n\tlayout_symbol: layout_symbol,\n\tlayout_raster: layout_raster,\n\tlayout_hillshade: layout_hillshade,\n\tfilter: filter,\n\tfilter_operator: filter_operator,\n\tgeometry_type: geometry_type,\n\t\"function\": {\n\texpression: {\n\t\ttype: \"expression\"\n\t},\n\tstops: {\n\t\ttype: \"array\",\n\t\tvalue: \"function_stop\"\n\t},\n\tbase: {\n\t\ttype: \"number\",\n\t\t\"default\": 1,\n\t\tminimum: 0\n\t},\n\tproperty: {\n\t\ttype: \"string\",\n\t\t\"default\": \"$zoom\"\n\t},\n\ttype: {\n\t\ttype: \"enum\",\n\t\tvalues: {\n\t\t\tidentity: {\n\t\t\t},\n\t\t\texponential: {\n\t\t\t},\n\t\t\tinterval: {\n\t\t\t},\n\t\t\tcategorical: {\n\t\t\t}\n\t\t},\n\t\t\"default\": \"exponential\"\n\t},\n\tcolorSpace: {\n\t\ttype: \"enum\",\n\t\tvalues: {\n\t\t\trgb: {\n\t\t\t},\n\t\t\tlab: {\n\t\t\t},\n\t\t\thcl: {\n\t\t\t}\n\t\t},\n\t\t\"default\": \"rgb\"\n\t},\n\t\"default\": {\n\t\ttype: \"*\",\n\t\trequired: false\n\t}\n},\n\tfunction_stop: function_stop,\n\texpression: expression$1,\n\tlight: light,\n\tsky: sky,\n\tterrain: terrain,\n\tprojection: projection,\n\tpaint: paint,\n\tpaint_fill: paint_fill,\n\t\"paint_fill-extrusion\": {\n\t\"fill-extrusion-opacity\": {\n\t\ttype: \"number\",\n\t\t\"default\": 1,\n\t\tminimum: 0,\n\t\tmaximum: 1,\n\t\ttransition: true,\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"fill-extrusion-color\": {\n\t\ttype: \"color\",\n\t\t\"default\": \"#000000\",\n\t\ttransition: true,\n\t\trequires: [\n\t\t\t{\n\t\t\t\t\"!\": \"fill-extrusion-pattern\"\n\t\t\t}\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\",\n\t\t\t\t\"feature-state\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-driven\"\n\t},\n\t\"fill-extrusion-translate\": {\n\t\ttype: \"array\",\n\t\tvalue: \"number\",\n\t\tlength: 2,\n\t\t\"default\": [\n\t\t\t0,\n\t\t\t0\n\t\t],\n\t\ttransition: true,\n\t\tunits: \"pixels\",\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"fill-extrusion-translate-anchor\": {\n\t\ttype: \"enum\",\n\t\tvalues: {\n\t\t\tmap: {\n\t\t\t},\n\t\t\tviewport: {\n\t\t\t}\n\t\t},\n\t\t\"default\": \"map\",\n\t\trequires: [\n\t\t\t\"fill-extrusion-translate\"\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: false,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t},\n\t\"fill-extrusion-pattern\": {\n\t\ttype: \"resolvedImage\",\n\t\ttransition: true,\n\t\texpression: {\n\t\t\tinterpolated: false,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"cross-faded-data-driven\"\n\t},\n\t\"fill-extrusion-height\": {\n\t\ttype: \"number\",\n\t\t\"default\": 0,\n\t\tminimum: 0,\n\t\tunits: \"meters\",\n\t\ttransition: true,\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\",\n\t\t\t\t\"feature-state\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-driven\"\n\t},\n\t\"fill-extrusion-base\": {\n\t\ttype: \"number\",\n\t\t\"default\": 0,\n\t\tminimum: 0,\n\t\tunits: \"meters\",\n\t\ttransition: true,\n\t\trequires: [\n\t\t\t\"fill-extrusion-height\"\n\t\t],\n\t\texpression: {\n\t\t\tinterpolated: true,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\",\n\t\t\t\t\"feature\",\n\t\t\t\t\"feature-state\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-driven\"\n\t},\n\t\"fill-extrusion-vertical-gradient\": {\n\t\ttype: \"boolean\",\n\t\t\"default\": true,\n\t\ttransition: false,\n\t\texpression: {\n\t\t\tinterpolated: false,\n\t\t\tparameters: [\n\t\t\t\t\"zoom\"\n\t\t\t]\n\t\t},\n\t\t\"property-type\": \"data-constant\"\n\t}\n},\n\tpaint_line: paint_line,\n\tpaint_circle: paint_circle,\n\tpaint_heatmap: paint_heatmap,\n\tpaint_symbol: paint_symbol,\n\tpaint_raster: paint_raster,\n\tpaint_hillshade: paint_hillshade,\n\tpaint_background: paint_background,\n\ttransition: transition,\n\t\"property-type\": {\n\t\"data-driven\": {\n\t\ttype: \"property-type\"\n\t},\n\t\"cross-faded\": {\n\t\ttype: \"property-type\"\n\t},\n\t\"cross-faded-data-driven\": {\n\t\ttype: \"property-type\"\n\t},\n\t\"color-ramp\": {\n\t\ttype: \"property-type\"\n\t},\n\t\"data-constant\": {\n\t\ttype: \"property-type\"\n\t},\n\tconstant: {\n\t\ttype: \"property-type\"\n\t}\n},\n\tpromoteId: promoteId\n};\n\nconst refProperties = ['type', 'source', 'source-layer', 'minzoom', 'maxzoom', 'filter', 'layout'];\n\nfunction deref(layer, parent) {\n const result = {};\n for (const k in layer) {\n if (k !== 'ref') {\n result[k] = layer[k];\n }\n }\n refProperties.forEach((k) => {\n if (k in parent) {\n result[k] = parent[k];\n }\n });\n return result;\n}\n/**\n * Given an array of layers, some of which may contain `ref` properties\n * whose value is the `id` of another property, return a new array where\n * such layers have been augmented with the 'type', 'source', etc. properties\n * from the parent layer, and the `ref` property has been removed.\n *\n * The input is not modified. The output may contain references to portions\n * of the input.\n *\n * @private\n * @param {Array} layers\n * @returns {Array}\n */\nfunction derefLayers(layers) {\n layers = layers.slice();\n const map = Object.create(null);\n for (let i = 0; i < layers.length; i++) {\n map[layers[i].id] = layers[i];\n }\n for (let i = 0; i < layers.length; i++) {\n if ('ref' in layers[i]) {\n layers[i] = deref(layers[i], map[layers[i].ref]);\n }\n }\n return layers;\n}\n\n/**\n * Deeply compares two object literals.\n *\n * @private\n */\nfunction deepEqual(a, b) {\n if (Array.isArray(a)) {\n if (!Array.isArray(b) || a.length !== b.length)\n return false;\n for (let i = 0; i < a.length; i++) {\n if (!deepEqual(a[i], b[i]))\n return false;\n }\n return true;\n }\n if (typeof a === 'object' && a !== null && b !== null) {\n if (!(typeof b === 'object'))\n return false;\n const keys = Object.keys(a);\n if (keys.length !== Object.keys(b).length)\n return false;\n for (const key in a) {\n if (!deepEqual(a[key], b[key]))\n return false;\n }\n return true;\n }\n return a === b;\n}\n\n/**\n * The main reason for this method is to allow type check when adding a command to the array.\n * @param commands - The commands array to add to\n * @param command - The command to add\n */\nfunction addCommand(commands, command) {\n commands.push(command);\n}\nfunction addSource(sourceId, after, commands) {\n addCommand(commands, { command: 'addSource', args: [sourceId, after[sourceId]] });\n}\nfunction removeSource(sourceId, commands, sourcesRemoved) {\n addCommand(commands, { command: 'removeSource', args: [sourceId] });\n sourcesRemoved[sourceId] = true;\n}\nfunction updateSource(sourceId, after, commands, sourcesRemoved) {\n removeSource(sourceId, commands, sourcesRemoved);\n addSource(sourceId, after, commands);\n}\nfunction canUpdateGeoJSON(before, after, sourceId) {\n let prop;\n for (prop in before[sourceId]) {\n if (!Object.prototype.hasOwnProperty.call(before[sourceId], prop))\n continue;\n if (prop !== 'data' && !deepEqual(before[sourceId][prop], after[sourceId][prop])) {\n return false;\n }\n }\n for (prop in after[sourceId]) {\n if (!Object.prototype.hasOwnProperty.call(after[sourceId], prop))\n continue;\n if (prop !== 'data' && !deepEqual(before[sourceId][prop], after[sourceId][prop])) {\n return false;\n }\n }\n return true;\n}\nfunction diffSources(before, after, commands, sourcesRemoved) {\n before = before || {};\n after = after || {};\n let sourceId;\n // look for sources to remove\n for (sourceId in before) {\n if (!Object.prototype.hasOwnProperty.call(before, sourceId))\n continue;\n if (!Object.prototype.hasOwnProperty.call(after, sourceId)) {\n removeSource(sourceId, commands, sourcesRemoved);\n }\n }\n // look for sources to add/update\n for (sourceId in after) {\n if (!Object.prototype.hasOwnProperty.call(after, sourceId))\n continue;\n if (!Object.prototype.hasOwnProperty.call(before, sourceId)) {\n addSource(sourceId, after, commands);\n }\n else if (!deepEqual(before[sourceId], after[sourceId])) {\n if (before[sourceId].type === 'geojson' && after[sourceId].type === 'geojson' && canUpdateGeoJSON(before, after, sourceId)) {\n addCommand(commands, { command: 'setGeoJSONSourceData', args: [sourceId, after[sourceId].data] });\n }\n else {\n // no update command, must remove then add\n updateSource(sourceId, after, commands, sourcesRemoved);\n }\n }\n }\n}\nfunction diffLayerPropertyChanges(before, after, commands, layerId, klass, command) {\n before = before || {};\n after = after || {};\n for (const prop in before) {\n if (!Object.prototype.hasOwnProperty.call(before, prop))\n continue;\n if (!deepEqual(before[prop], after[prop])) {\n commands.push({ command, args: [layerId, prop, after[prop], klass] });\n }\n }\n for (const prop in after) {\n if (!Object.prototype.hasOwnProperty.call(after, prop) || Object.prototype.hasOwnProperty.call(before, prop))\n continue;\n if (!deepEqual(before[prop], after[prop])) {\n commands.push({ command, args: [layerId, prop, after[prop], klass] });\n }\n }\n}\nfunction pluckId(layer) {\n return layer.id;\n}\nfunction indexById(group, layer) {\n group[layer.id] = layer;\n return group;\n}\nfunction diffLayers(before, after, commands) {\n before = before || [];\n after = after || [];\n // order of layers by id\n const beforeOrder = before.map(pluckId);\n const afterOrder = after.map(pluckId);\n // index of layer by id\n const beforeIndex = before.reduce(indexById, {});\n const afterIndex = after.reduce(indexById, {});\n // track order of layers as if they have been mutated\n const tracker = beforeOrder.slice();\n // layers that have been added do not need to be diffed\n const clean = Object.create(null);\n let layerId;\n let beforeLayer;\n let afterLayer;\n let insertBeforeLayerId;\n let prop;\n // remove layers\n for (let i = 0, d = 0; i < beforeOrder.length; i++) {\n layerId = beforeOrder[i];\n if (!Object.prototype.hasOwnProperty.call(afterIndex, layerId)) {\n addCommand(commands, { command: 'removeLayer', args: [layerId] });\n tracker.splice(tracker.indexOf(layerId, d), 1);\n }\n else {\n // limit where in tracker we need to look for a match\n d++;\n }\n }\n // add/reorder layers\n for (let i = 0, d = 0; i < afterOrder.length; i++) {\n // work backwards as insert is before an existing layer\n layerId = afterOrder[afterOrder.length - 1 - i];\n if (tracker[tracker.length - 1 - i] === layerId)\n continue;\n if (Object.prototype.hasOwnProperty.call(beforeIndex, layerId)) {\n // remove the layer before we insert at the correct position\n addCommand(commands, { command: 'removeLayer', args: [layerId] });\n tracker.splice(tracker.lastIndexOf(layerId, tracker.length - d), 1);\n }\n else {\n // limit where in tracker we need to look for a match\n d++;\n }\n // add layer at correct position\n insertBeforeLayerId = tracker[tracker.length - i];\n addCommand(commands, { command: 'addLayer', args: [afterIndex[layerId], insertBeforeLayerId] });\n tracker.splice(tracker.length - i, 0, layerId);\n clean[layerId] = true;\n }\n // update layers\n for (let i = 0; i < afterOrder.length; i++) {\n layerId = afterOrder[i];\n beforeLayer = beforeIndex[layerId];\n afterLayer = afterIndex[layerId];\n // no need to update if previously added (new or moved)\n if (clean[layerId] || deepEqual(beforeLayer, afterLayer))\n continue;\n // If source, source-layer, or type have changes, then remove the layer\n // and add it back 'from scratch'.\n if (!deepEqual(beforeLayer.source, afterLayer.source) || !deepEqual(beforeLayer['source-layer'], afterLayer['source-layer']) || !deepEqual(beforeLayer.type, afterLayer.type)) {\n addCommand(commands, { command: 'removeLayer', args: [layerId] });\n // we add the layer back at the same position it was already in, so\n // there's no need to update the `tracker`\n insertBeforeLayerId = tracker[tracker.lastIndexOf(layerId) + 1];\n addCommand(commands, { command: 'addLayer', args: [afterLayer, insertBeforeLayerId] });\n continue;\n }\n // layout, paint, filter, minzoom, maxzoom\n diffLayerPropertyChanges(beforeLayer.layout, afterLayer.layout, commands, layerId, null, 'setLayoutProperty');\n diffLayerPropertyChanges(beforeLayer.paint, afterLayer.paint, commands, layerId, null, 'setPaintProperty');\n if (!deepEqual(beforeLayer.filter, afterLayer.filter)) {\n addCommand(commands, { command: 'setFilter', args: [layerId, afterLayer.filter] });\n }\n if (!deepEqual(beforeLayer.minzoom, afterLayer.minzoom) || !deepEqual(beforeLayer.maxzoom, afterLayer.maxzoom)) {\n addCommand(commands, { command: 'setLayerZoomRange', args: [layerId, afterLayer.minzoom, afterLayer.maxzoom] });\n }\n // handle all other layer props, including paint.*\n for (prop in beforeLayer) {\n if (!Object.prototype.hasOwnProperty.call(beforeLayer, prop))\n continue;\n if (prop === 'layout' || prop === 'paint' || prop === 'filter' ||\n prop === 'metadata' || prop === 'minzoom' || prop === 'maxzoom')\n continue;\n if (prop.indexOf('paint.') === 0) {\n diffLayerPropertyChanges(beforeLayer[prop], afterLayer[prop], commands, layerId, prop.slice(6), 'setPaintProperty');\n }\n else if (!deepEqual(beforeLayer[prop], afterLayer[prop])) {\n addCommand(commands, { command: 'setLayerProperty', args: [layerId, prop, afterLayer[prop]] });\n }\n }\n for (prop in afterLayer) {\n if (!Object.prototype.hasOwnProperty.call(afterLayer, prop) || Object.prototype.hasOwnProperty.call(beforeLayer, prop))\n continue;\n if (prop === 'layout' || prop === 'paint' || prop === 'filter' ||\n prop === 'metadata' || prop === 'minzoom' || prop === 'maxzoom')\n continue;\n if (prop.indexOf('paint.') === 0) {\n diffLayerPropertyChanges(beforeLayer[prop], afterLayer[prop], commands, layerId, prop.slice(6), 'setPaintProperty');\n }\n else if (!deepEqual(beforeLayer[prop], afterLayer[prop])) {\n addCommand(commands, { command: 'setLayerProperty', args: [layerId, prop, afterLayer[prop]] });\n }\n }\n }\n}\n/**\n * Diff two stylesheet\n *\n * Creates semanticly aware diffs that can easily be applied at runtime.\n * Operations produced by the diff closely resemble the maplibre-gl-js API. Any\n * error creating the diff will fall back to the 'setStyle' operation.\n *\n * Example diff:\n * [\n * { command: 'setConstant', args: ['@water', '#0000FF'] },\n * { command: 'setPaintProperty', args: ['background', 'background-color', 'black'] }\n * ]\n *\n * @private\n * @param {*} [before] stylesheet to compare from\n * @param {*} after stylesheet to compare to\n * @returns Array list of changes\n */\nfunction diff(before, after) {\n if (!before)\n return [{ command: 'setStyle', args: [after] }];\n let commands = [];\n try {\n // Handle changes to top-level properties\n if (!deepEqual(before.version, after.version)) {\n return [{ command: 'setStyle', args: [after] }];\n }\n if (!deepEqual(before.center, after.center)) {\n commands.push({ command: 'setCenter', args: [after.center] });\n }\n if (!deepEqual(before.centerAltitude, after.centerAltitude)) {\n commands.push({ command: 'setCenterAltitude', args: [after.centerAltitude] });\n }\n if (!deepEqual(before.zoom, after.zoom)) {\n commands.push({ command: 'setZoom', args: [after.zoom] });\n }\n if (!deepEqual(before.bearing, after.bearing)) {\n commands.push({ command: 'setBearing', args: [after.bearing] });\n }\n if (!deepEqual(before.pitch, after.pitch)) {\n commands.push({ command: 'setPitch', args: [after.pitch] });\n }\n if (!deepEqual(before.roll, after.roll)) {\n commands.push({ command: 'setRoll', args: [after.roll] });\n }\n if (!deepEqual(before.sprite, after.sprite)) {\n commands.push({ command: 'setSprite', args: [after.sprite] });\n }\n if (!deepEqual(before.glyphs, after.glyphs)) {\n commands.push({ command: 'setGlyphs', args: [after.glyphs] });\n }\n if (!deepEqual(before.transition, after.transition)) {\n commands.push({ command: 'setTransition', args: [after.transition] });\n }\n if (!deepEqual(before.light, after.light)) {\n commands.push({ command: 'setLight', args: [after.light] });\n }\n if (!deepEqual(before.terrain, after.terrain)) {\n commands.push({ command: 'setTerrain', args: [after.terrain] });\n }\n if (!deepEqual(before.sky, after.sky)) {\n commands.push({ command: 'setSky', args: [after.sky] });\n }\n if (!deepEqual(before.projection, after.projection)) {\n commands.push({ command: 'setProjection', args: [after.projection] });\n }\n // Handle changes to `sources`\n // If a source is to be removed, we also--before the removeSource\n // command--need to remove all the style layers that depend on it.\n const sourcesRemoved = {};\n // First collect the {add,remove}Source commands\n const removeOrAddSourceCommands = [];\n diffSources(before.sources, after.sources, removeOrAddSourceCommands, sourcesRemoved);\n // Push a removeLayer command for each style layer that depends on a\n // source that's being removed.\n // Also, exclude any such layers them from the input to `diffLayers`\n // below, so that diffLayers produces the appropriate `addLayers`\n // command\n const beforeLayers = [];\n if (before.layers) {\n before.layers.forEach((layer) => {\n if ('source' in layer && sourcesRemoved[layer.source]) {\n commands.push({ command: 'removeLayer', args: [layer.id] });\n }\n else {\n beforeLayers.push(layer);\n }\n });\n }\n commands = commands.concat(removeOrAddSourceCommands);\n // Handle changes to `layers`\n diffLayers(beforeLayers, after.layers, commands);\n }\n catch (e) {\n // fall back to setStyle\n console.warn('Unable to compute style diff:', e);\n commands = [{ command: 'setStyle', args: [after] }];\n }\n return commands;\n}\n\n// Note: Do not inherit from Error. It breaks when transpiling to ES5.\nclass ValidationError {\n constructor(key, value, message, identifier) {\n this.message = (key ? `${key}: ` : '') + message;\n if (identifier)\n this.identifier = identifier;\n if (value !== null && value !== undefined && value.__line__) {\n this.line = value.__line__;\n }\n }\n}\n\n// Note: Do not inherit from Error. It breaks when transpiling to ES5.\nclass ParsingError {\n constructor(error) {\n this.error = error;\n this.message = error.message;\n const match = error.message.match(/line (\\d+)/);\n this.line = match ? parseInt(match[1], 10) : 0;\n }\n}\n\nfunction extendBy(output, ...inputs) {\n for (const input of inputs) {\n for (const k in input) {\n output[k] = input[k];\n }\n }\n return output;\n}\n\nclass ExpressionParsingError extends Error {\n constructor(key, message) {\n super(message);\n this.message = message;\n this.key = key;\n }\n}\n\n/**\n * Tracks `let` bindings during expression parsing.\n * @private\n */\nclass Scope {\n constructor(parent, bindings = []) {\n this.parent = parent;\n this.bindings = {};\n for (const [name, expression] of bindings) {\n this.bindings[name] = expression;\n }\n }\n concat(bindings) {\n return new Scope(this, bindings);\n }\n get(name) {\n if (this.bindings[name]) {\n return this.bindings[name];\n }\n if (this.parent) {\n return this.parent.get(name);\n }\n throw new Error(`${name} not found in scope.`);\n }\n has(name) {\n if (this.bindings[name])\n return true;\n return this.parent ? this.parent.has(name) : false;\n }\n}\n\nconst NullType = { kind: 'null' };\nconst NumberType = { kind: 'number' };\nconst StringType = { kind: 'string' };\nconst BooleanType = { kind: 'boolean' };\nconst ColorType = { kind: 'color' };\nconst ProjectionDefinitionType = { kind: 'projectionDefinition' };\nconst ObjectType = { kind: 'object' };\nconst ValueType = { kind: 'value' };\nconst ErrorType = { kind: 'error' };\nconst CollatorType = { kind: 'collator' };\nconst FormattedType = { kind: 'formatted' };\nconst PaddingType = { kind: 'padding' };\nconst ResolvedImageType = { kind: 'resolvedImage' };\nconst VariableAnchorOffsetCollectionType = { kind: 'variableAnchorOffsetCollection' };\nfunction array(itemType, N) {\n return {\n kind: 'array',\n itemType,\n N\n };\n}\nfunction typeToString(type) {\n if (type.kind === 'array') {\n const itemType = typeToString(type.itemType);\n return typeof type.N === 'number' ?\n `array<${itemType}, ${type.N}>` :\n type.itemType.kind === 'value' ? 'array' : `array<${itemType}>`;\n }\n else {\n return type.kind;\n }\n}\nconst valueMemberTypes = [\n NullType,\n NumberType,\n StringType,\n BooleanType,\n ColorType,\n ProjectionDefinitionType,\n FormattedType,\n ObjectType,\n array(ValueType),\n PaddingType,\n ResolvedImageType,\n VariableAnchorOffsetCollectionType\n];\n/**\n * Returns null if `t` is a subtype of `expected`; otherwise returns an\n * error message.\n * @private\n */\nfunction checkSubtype(expected, t) {\n if (t.kind === 'error') {\n // Error is a subtype of every type\n return null;\n }\n else if (expected.kind === 'array') {\n if (t.kind === 'array' &&\n ((t.N === 0 && t.itemType.kind === 'value') || !checkSubtype(expected.itemType, t.itemType)) &&\n (typeof expected.N !== 'number' || expected.N === t.N)) {\n return null;\n }\n }\n else if (expected.kind === t.kind) {\n return null;\n }\n else if (expected.kind === 'value') {\n for (const memberType of valueMemberTypes) {\n if (!checkSubtype(memberType, t)) {\n return null;\n }\n }\n }\n return `Expected ${typeToString(expected)} but found ${typeToString(t)} instead.`;\n}\nfunction isValidType(provided, allowedTypes) {\n return allowedTypes.some(t => t.kind === provided.kind);\n}\nfunction isValidNativeType(provided, allowedTypes) {\n return allowedTypes.some(t => {\n if (t === 'null') {\n return provided === null;\n }\n else if (t === 'array') {\n return Array.isArray(provided);\n }\n else if (t === 'object') {\n return provided && !Array.isArray(provided) && typeof provided === 'object';\n }\n else {\n return t === typeof provided;\n }\n });\n}\n/**\n * Verify whether the specified type is of the same type as the specified sample.\n *\n * @param provided Type to verify\n * @param sample Sample type to reference\n * @returns `true` if both objects are of the same type, `false` otherwise\n * @example basic types\n * if (verifyType(outputType, ValueType)) {\n * // type narrowed to:\n * outputType.kind; // 'value'\n * }\n * @example array types\n * if (verifyType(outputType, array(NumberType))) {\n * // type narrowed to:\n * outputType.kind; // 'array'\n * outputType.itemType; // NumberTypeT\n * outputType.itemType.kind; // 'number'\n * }\n */\nfunction verifyType(provided, sample) {\n if (provided.kind === 'array' && sample.kind === 'array') {\n return provided.itemType.kind === sample.itemType.kind && typeof provided.N === 'number';\n }\n return provided.kind === sample.kind;\n}\n\n// See https://observablehq.com/@mbostock/lab-and-rgb\nconst Xn = 0.96422, Yn = 1, Zn = 0.82521, t0 = 4 / 29, t1 = 6 / 29, t2 = 3 * t1 * t1, t3 = t1 * t1 * t1, deg2rad = Math.PI / 180, rad2deg = 180 / Math.PI;\nfunction constrainAngle(angle) {\n angle = angle % 360;\n if (angle < 0) {\n angle += 360;\n }\n return angle;\n}\nfunction rgbToLab([r, g, b, alpha]) {\n r = rgb2xyz(r);\n g = rgb2xyz(g);\n b = rgb2xyz(b);\n let x, z;\n const y = xyz2lab((0.2225045 * r + 0.7168786 * g + 0.0606169 * b) / Yn);\n if (r === g && g === b) {\n x = z = y;\n }\n else {\n x = xyz2lab((0.4360747 * r + 0.3850649 * g + 0.1430804 * b) / Xn);\n z = xyz2lab((0.0139322 * r + 0.0971045 * g + 0.7141733 * b) / Zn);\n }\n const l = 116 * y - 16;\n return [(l < 0) ? 0 : l, 500 * (x - y), 200 * (y - z), alpha];\n}\nfunction rgb2xyz(x) {\n return (x <= 0.04045) ? x / 12.92 : Math.pow((x + 0.055) / 1.055, 2.4);\n}\nfunction xyz2lab(t) {\n return (t > t3) ? Math.pow(t, 1 / 3) : t / t2 + t0;\n}\nfunction labToRgb([l, a, b, alpha]) {\n let y = (l + 16) / 116, x = isNaN(a) ? y : y + a / 500, z = isNaN(b) ? y : y - b / 200;\n y = Yn * lab2xyz(y);\n x = Xn * lab2xyz(x);\n z = Zn * lab2xyz(z);\n return [\n xyz2rgb(3.1338561 * x - 1.6168667 * y - 0.4906146 * z), // D50 -> sRGB\n xyz2rgb(-0.9787684 * x + 1.9161415 * y + 0.0334540 * z),\n xyz2rgb(0.0719453 * x - 0.2289914 * y + 1.4052427 * z),\n alpha,\n ];\n}\nfunction xyz2rgb(x) {\n x = (x <= 0.00304) ? 12.92 * x : 1.055 * Math.pow(x, 1 / 2.4) - 0.055;\n return (x < 0) ? 0 : (x > 1) ? 1 : x; // clip to 0..1 range\n}\nfunction lab2xyz(t) {\n return (t > t1) ? t * t * t : t2 * (t - t0);\n}\nfunction rgbToHcl(rgbColor) {\n const [l, a, b, alpha] = rgbToLab(rgbColor);\n const c = Math.sqrt(a * a + b * b);\n const h = Math.round(c * 10000) ? constrainAngle(Math.atan2(b, a) * rad2deg) : NaN;\n return [h, c, l, alpha];\n}\nfunction hclToRgb([h, c, l, alpha]) {\n h = isNaN(h) ? 0 : h * deg2rad;\n return labToRgb([l, Math.cos(h) * c, Math.sin(h) * c, alpha]);\n}\n// https://drafts.csswg.org/css-color-4/#hsl-to-rgb\nfunction hslToRgb([h, s, l, alpha]) {\n h = constrainAngle(h);\n s /= 100;\n l /= 100;\n function f(n) {\n const k = (n + h / 30) % 12;\n const a = s * Math.min(l, 1 - l);\n return l - a * Math.max(-1, Math.min(k - 3, 9 - k, 1));\n }\n return [f(0), f(8), f(4), alpha];\n}\n\n/**\n * CSS color parser compliant with CSS Color 4 Specification.\n * Supports: named colors, `transparent` keyword, all rgb hex notations,\n * rgb(), rgba(), hsl() and hsla() functions.\n * Does not round the parsed values to integers from the range 0..255.\n *\n * Syntax:\n *\n * = | \n * = | \n *\n * rgb() = rgb( {3} [ / ]? ) | rgb( {3} [ / ]? )\n * rgb() = rgb( #{3} , ? ) | rgb( #{3} , ? )\n *\n * hsl() = hsl( [ / ]? )\n * hsl() = hsl( , , , ? )\n *\n * Caveats:\n * - - with optional `deg` suffix; `grad`, `rad`, `turn` are not supported\n * - `none` keyword is not supported\n * - comments inside rgb()/hsl() are not supported\n * - legacy color syntax rgba() is supported with an identical grammar and behavior to rgb()\n * - legacy color syntax hsla() is supported with an identical grammar and behavior to hsl()\n *\n * @param input CSS color string to parse.\n * @returns Color in sRGB color space, with `red`, `green`, `blue`\n * and `alpha` channels normalized to the range 0..1,\n * or `undefined` if the input is not a valid color string.\n */\nfunction parseCssColor(input) {\n input = input.toLowerCase().trim();\n if (input === 'transparent') {\n return [0, 0, 0, 0];\n }\n // 'white', 'black', 'blue'\n const namedColorsMatch = namedColors[input];\n if (namedColorsMatch) {\n const [r, g, b] = namedColorsMatch;\n return [r / 255, g / 255, b / 255, 1];\n }\n // #f0c, #f0cf, #ff00cc, #ff00ccff\n if (input.startsWith('#')) {\n const hexRegexp = /^#(?:[0-9a-f]{3,4}|[0-9a-f]{6}|[0-9a-f]{8})$/;\n if (hexRegexp.test(input)) {\n const step = input.length < 6 ? 1 : 2;\n let i = 1;\n return [\n parseHex(input.slice(i, i += step)),\n parseHex(input.slice(i, i += step)),\n parseHex(input.slice(i, i += step)),\n parseHex(input.slice(i, i + step) || 'ff'),\n ];\n }\n }\n // rgb(128 0 0), rgb(50% 0% 0%), rgba(255,0,255,0.6), rgb(255 0 255 / 60%), rgb(100% 0% 100% /.6)\n if (input.startsWith('rgb')) {\n const rgbRegExp = /^rgba?\\(\\s*([\\de.+-]+)(%)?(?:\\s+|\\s*(,)\\s*)([\\de.+-]+)(%)?(?:\\s+|\\s*(,)\\s*)([\\de.+-]+)(%)?(?:\\s*([,\\/])\\s*([\\de.+-]+)(%)?)?\\s*\\)$/;\n const rgbMatch = input.match(rgbRegExp);\n if (rgbMatch) {\n const [_, // eslint-disable-line @typescript-eslint/no-unused-vars\n r, // \n rp, // % (optional)\n f1, // , (optional)\n g, // \n gp, // % (optional)\n f2, // , (optional)\n b, // \n bp, // % (optional)\n f3, // ,|/ (optional)\n a, // (optional)\n ap, // % (optional)\n ] = rgbMatch;\n const argFormat = [f1 || ' ', f2 || ' ', f3].join('');\n if (argFormat === ' ' ||\n argFormat === ' /' ||\n argFormat === ',,' ||\n argFormat === ',,,') {\n const valFormat = [rp, gp, bp].join('');\n const maxValue = (valFormat === '%%%') ? 100 :\n (valFormat === '') ? 255 : 0;\n if (maxValue) {\n const rgba = [\n clamp(+r / maxValue, 0, 1),\n clamp(+g / maxValue, 0, 1),\n clamp(+b / maxValue, 0, 1),\n a ? parseAlpha(+a, ap) : 1,\n ];\n if (validateNumbers(rgba)) {\n return rgba;\n }\n // invalid numbers\n }\n // values must be all numbers or all percentages\n }\n return; // comma optional syntax requires no commas at all\n }\n }\n // hsl(120 50% 80%), hsla(120deg,50%,80%,.9), hsl(12e1 50% 80% / 90%)\n const hslRegExp = /^hsla?\\(\\s*([\\de.+-]+)(?:deg)?(?:\\s+|\\s*(,)\\s*)([\\de.+-]+)%(?:\\s+|\\s*(,)\\s*)([\\de.+-]+)%(?:\\s*([,\\/])\\s*([\\de.+-]+)(%)?)?\\s*\\)$/;\n const hslMatch = input.match(hslRegExp);\n if (hslMatch) {\n const [_, // eslint-disable-line @typescript-eslint/no-unused-vars\n h, // \n f1, // , (optional)\n s, // \n f2, // , (optional)\n l, // \n f3, // ,|/ (optional)\n a, // (optional)\n ap, // % (optional)\n ] = hslMatch;\n const argFormat = [f1 || ' ', f2 || ' ', f3].join('');\n if (argFormat === ' ' ||\n argFormat === ' /' ||\n argFormat === ',,' ||\n argFormat === ',,,') {\n const hsla = [\n +h,\n clamp(+s, 0, 100),\n clamp(+l, 0, 100),\n a ? parseAlpha(+a, ap) : 1,\n ];\n if (validateNumbers(hsla)) {\n return hslToRgb(hsla);\n }\n // invalid numbers\n }\n // comma optional syntax requires no commas at all\n }\n}\nfunction parseHex(hex) {\n return parseInt(hex.padEnd(2, hex), 16) / 255;\n}\nfunction parseAlpha(a, asPercentage) {\n return clamp(asPercentage ? (a / 100) : a, 0, 1);\n}\nfunction clamp(n, min, max) {\n return Math.min(Math.max(min, n), max);\n}\n/**\n * The regular expression for numeric values is not super specific, and it may\n * happen that it will accept a value that is not a valid number. In order to\n * detect and eliminate such values this function exists.\n *\n * @param array Array of uncertain numbers.\n * @returns `true` if the specified array contains only valid numbers, `false` otherwise.\n */\nfunction validateNumbers(array) {\n return !array.some(Number.isNaN);\n}\n/**\n * To generate:\n * - visit {@link https://www.w3.org/TR/css-color-4/#named-colors}\n * - run in the console:\n * @example\n * copy(`{\\n${[...document.querySelector('.named-color-table tbody').children].map((tr) => `${tr.cells[2].textContent.trim()}: [${tr.cells[4].textContent.trim().split(/\\s+/).join(', ')}],`).join('\\n')}\\n}`);\n */\nconst namedColors = {\n aliceblue: [240, 248, 255],\n antiquewhite: [250, 235, 215],\n aqua: [0, 255, 255],\n aquamarine: [127, 255, 212],\n azure: [240, 255, 255],\n beige: [245, 245, 220],\n bisque: [255, 228, 196],\n black: [0, 0, 0],\n blanchedalmond: [255, 235, 205],\n blue: [0, 0, 255],\n blueviolet: [138, 43, 226],\n brown: [165, 42, 42],\n burlywood: [222, 184, 135],\n cadetblue: [95, 158, 160],\n chartreuse: [127, 255, 0],\n chocolate: [210, 105, 30],\n coral: [255, 127, 80],\n cornflowerblue: [100, 149, 237],\n cornsilk: [255, 248, 220],\n crimson: [220, 20, 60],\n cyan: [0, 255, 255],\n darkblue: [0, 0, 139],\n darkcyan: [0, 139, 139],\n darkgoldenrod: [184, 134, 11],\n darkgray: [169, 169, 169],\n darkgreen: [0, 100, 0],\n darkgrey: [169, 169, 169],\n darkkhaki: [189, 183, 107],\n darkmagenta: [139, 0, 139],\n darkolivegreen: [85, 107, 47],\n darkorange: [255, 140, 0],\n darkorchid: [153, 50, 204],\n darkred: [139, 0, 0],\n darksalmon: [233, 150, 122],\n darkseagreen: [143, 188, 143],\n darkslateblue: [72, 61, 139],\n darkslategray: [47, 79, 79],\n darkslategrey: [47, 79, 79],\n darkturquoise: [0, 206, 209],\n darkviolet: [148, 0, 211],\n deeppink: [255, 20, 147],\n deepskyblue: [0, 191, 255],\n dimgray: [105, 105, 105],\n dimgrey: [105, 105, 105],\n dodgerblue: [30, 144, 255],\n firebrick: [178, 34, 34],\n floralwhite: [255, 250, 240],\n forestgreen: [34, 139, 34],\n fuchsia: [255, 0, 255],\n gainsboro: [220, 220, 220],\n ghostwhite: [248, 248, 255],\n gold: [255, 215, 0],\n goldenrod: [218, 165, 32],\n gray: [128, 128, 128],\n green: [0, 128, 0],\n greenyellow: [173, 255, 47],\n grey: [128, 128, 128],\n honeydew: [240, 255, 240],\n hotpink: [255, 105, 180],\n indianred: [205, 92, 92],\n indigo: [75, 0, 130],\n ivory: [255, 255, 240],\n khaki: [240, 230, 140],\n lavender: [230, 230, 250],\n lavenderblush: [255, 240, 245],\n lawngreen: [124, 252, 0],\n lemonchiffon: [255, 250, 205],\n lightblue: [173, 216, 230],\n lightcoral: [240, 128, 128],\n lightcyan: [224, 255, 255],\n lightgoldenrodyellow: [250, 250, 210],\n lightgray: [211, 211, 211],\n lightgreen: [144, 238, 144],\n lightgrey: [211, 211, 211],\n lightpink: [255, 182, 193],\n lightsalmon: [255, 160, 122],\n lightseagreen: [32, 178, 170],\n lightskyblue: [135, 206, 250],\n lightslategray: [119, 136, 153],\n lightslategrey: [119, 136, 153],\n lightsteelblue: [176, 196, 222],\n lightyellow: [255, 255, 224],\n lime: [0, 255, 0],\n limegreen: [50, 205, 50],\n linen: [250, 240, 230],\n magenta: [255, 0, 255],\n maroon: [128, 0, 0],\n mediumaquamarine: [102, 205, 170],\n mediumblue: [0, 0, 205],\n mediumorchid: [186, 85, 211],\n mediumpurple: [147, 112, 219],\n mediumseagreen: [60, 179, 113],\n mediumslateblue: [123, 104, 238],\n mediumspringgreen: [0, 250, 154],\n mediumturquoise: [72, 209, 204],\n mediumvioletred: [199, 21, 133],\n midnightblue: [25, 25, 112],\n mintcream: [245, 255, 250],\n mistyrose: [255, 228, 225],\n moccasin: [255, 228, 181],\n navajowhite: [255, 222, 173],\n navy: [0, 0, 128],\n oldlace: [253, 245, 230],\n olive: [128, 128, 0],\n olivedrab: [107, 142, 35],\n orange: [255, 165, 0],\n orangered: [255, 69, 0],\n orchid: [218, 112, 214],\n palegoldenrod: [238, 232, 170],\n palegreen: [152, 251, 152],\n paleturquoise: [175, 238, 238],\n palevioletred: [219, 112, 147],\n papayawhip: [255, 239, 213],\n peachpuff: [255, 218, 185],\n peru: [205, 133, 63],\n pink: [255, 192, 203],\n plum: [221, 160, 221],\n powderblue: [176, 224, 230],\n purple: [128, 0, 128],\n rebeccapurple: [102, 51, 153],\n red: [255, 0, 0],\n rosybrown: [188, 143, 143],\n royalblue: [65, 105, 225],\n saddlebrown: [139, 69, 19],\n salmon: [250, 128, 114],\n sandybrown: [244, 164, 96],\n seagreen: [46, 139, 87],\n seashell: [255, 245, 238],\n sienna: [160, 82, 45],\n silver: [192, 192, 192],\n skyblue: [135, 206, 235],\n slateblue: [106, 90, 205],\n slategray: [112, 128, 144],\n slategrey: [112, 128, 144],\n snow: [255, 250, 250],\n springgreen: [0, 255, 127],\n steelblue: [70, 130, 180],\n tan: [210, 180, 140],\n teal: [0, 128, 128],\n thistle: [216, 191, 216],\n tomato: [255, 99, 71],\n turquoise: [64, 224, 208],\n violet: [238, 130, 238],\n wheat: [245, 222, 179],\n white: [255, 255, 255],\n whitesmoke: [245, 245, 245],\n yellow: [255, 255, 0],\n yellowgreen: [154, 205, 50],\n};\n\nfunction interpolateNumber(from, to, t) {\n return from + t * (to - from);\n}\nfunction interpolateArray(from, to, t) {\n return from.map((d, i) => {\n return interpolateNumber(d, to[i], t);\n });\n}\n\n/**\n * Checks whether the specified color space is one of the supported interpolation color spaces.\n *\n * @param colorSpace Color space key to verify.\n * @returns `true` if the specified color space is one of the supported\n * interpolation color spaces, `false` otherwise\n */\nfunction isSupportedInterpolationColorSpace(colorSpace) {\n return colorSpace === 'rgb' || colorSpace === 'hcl' || colorSpace === 'lab';\n}\n/**\n * Color representation used by WebGL.\n * Defined in sRGB color space and pre-blended with alpha.\n * @private\n */\nclass Color {\n /**\n * @param r Red component premultiplied by `alpha` 0..1\n * @param g Green component premultiplied by `alpha` 0..1\n * @param b Blue component premultiplied by `alpha` 0..1\n * @param [alpha=1] Alpha component 0..1\n * @param [premultiplied=true] Whether the `r`, `g` and `b` values have already\n * been multiplied by alpha. If `true` nothing happens if `false` then they will\n * be multiplied automatically.\n */\n constructor(r, g, b, alpha = 1, premultiplied = true) {\n this.r = r;\n this.g = g;\n this.b = b;\n this.a = alpha;\n if (!premultiplied) {\n this.r *= alpha;\n this.g *= alpha;\n this.b *= alpha;\n if (!alpha) {\n // alpha = 0 erases completely rgb channels. This behavior is not desirable\n // if this particular color is later used in color interpolation.\n // Because of that, a reference to original color is saved.\n this.overwriteGetter('rgb', [r, g, b, alpha]);\n }\n }\n }\n /**\n * Parses CSS color strings and converts colors to sRGB color space if needed.\n * Officially supported color formats:\n * - keyword, e.g. 'aquamarine' or 'steelblue'\n * - hex (with 3, 4, 6 or 8 digits), e.g. '#f0f' or '#e9bebea9'\n * - rgb and rgba, e.g. 'rgb(0,240,120)' or 'rgba(0%,94%,47%,0.1)' or 'rgb(0 240 120 / .3)'\n * - hsl and hsla, e.g. 'hsl(0,0%,83%)' or 'hsla(0,0%,83%,.5)' or 'hsl(0 0% 83% / 20%)'\n *\n * @param input CSS color string to parse.\n * @returns A `Color` instance, or `undefined` if the input is not a valid color string.\n */\n static parse(input) {\n // in zoom-and-property function input could be an instance of Color class\n if (input instanceof Color) {\n return input;\n }\n if (typeof input !== 'string') {\n return;\n }\n const rgba = parseCssColor(input);\n if (rgba) {\n return new Color(...rgba, false);\n }\n }\n /**\n * Used in color interpolation and by 'to-rgba' expression.\n *\n * @returns Gien color, with reversed alpha blending, in sRGB color space.\n */\n get rgb() {\n const { r, g, b, a } = this;\n const f = a || Infinity; // reverse alpha blending factor\n return this.overwriteGetter('rgb', [r / f, g / f, b / f, a]);\n }\n /**\n * Used in color interpolation.\n *\n * @returns Gien color, with reversed alpha blending, in HCL color space.\n */\n get hcl() {\n return this.overwriteGetter('hcl', rgbToHcl(this.rgb));\n }\n /**\n * Used in color interpolation.\n *\n * @returns Gien color, with reversed alpha blending, in LAB color space.\n */\n get lab() {\n return this.overwriteGetter('lab', rgbToLab(this.rgb));\n }\n /**\n * Lazy getter pattern. When getter is called for the first time lazy value\n * is calculated and then overwrites getter function in given object instance.\n *\n * @example:\n * const redColor = Color.parse('red');\n * let x = redColor.hcl; // this will invoke `get hcl()`, which will calculate\n * // the value of red in HCL space and invoke this `overwriteGetter` function\n * // which in turn will set a field with a key 'hcl' in the `redColor` object.\n * // In other words it will override `get hcl()` from its `Color` prototype\n * // with its own property: hcl = [calculated red value in hcl].\n * let y = redColor.hcl; // next call will no longer invoke getter but simply\n * // return the previously calculated value\n * x === y; // true - `x` is exactly the same object as `y`\n *\n * @param getterKey Getter key\n * @param lazyValue Lazily calculated value to be memoized by current instance\n * @private\n */\n overwriteGetter(getterKey, lazyValue) {\n Object.defineProperty(this, getterKey, { value: lazyValue });\n return lazyValue;\n }\n /**\n * Used by 'to-string' expression.\n *\n * @returns Serialized color in format `rgba(r,g,b,a)`\n * where r,g,b are numbers within 0..255 and alpha is number within 1..0\n *\n * @example\n * var purple = new Color.parse('purple');\n * purple.toString; // = \"rgba(128,0,128,1)\"\n * var translucentGreen = new Color.parse('rgba(26, 207, 26, .73)');\n * translucentGreen.toString(); // = \"rgba(26,207,26,0.73)\"\n */\n toString() {\n const [r, g, b, a] = this.rgb;\n return `rgba(${[r, g, b].map(n => Math.round(n * 255)).join(',')},${a})`;\n }\n static interpolate(from, to, t, spaceKey = 'rgb') {\n switch (spaceKey) {\n case 'rgb': {\n const [r, g, b, alpha] = interpolateArray(from.rgb, to.rgb, t);\n return new Color(r, g, b, alpha, false);\n }\n case 'hcl': {\n const [hue0, chroma0, light0, alphaF] = from.hcl;\n const [hue1, chroma1, light1, alphaT] = to.hcl;\n // https://github.com/gka/chroma.js/blob/cd1b3c0926c7a85cbdc3b1453b3a94006de91a92/src/interpolator/_hsx.js\n let hue, chroma;\n if (!isNaN(hue0) && !isNaN(hue1)) {\n let dh = hue1 - hue0;\n if (hue1 > hue0 && dh > 180) {\n dh -= 360;\n }\n else if (hue1 < hue0 && hue0 - hue1 > 180) {\n dh += 360;\n }\n hue = hue0 + t * dh;\n }\n else if (!isNaN(hue0)) {\n hue = hue0;\n if (light1 === 1 || light1 === 0)\n chroma = chroma0;\n }\n else if (!isNaN(hue1)) {\n hue = hue1;\n if (light0 === 1 || light0 === 0)\n chroma = chroma1;\n }\n else {\n hue = NaN;\n }\n const [r, g, b, alpha] = hclToRgb([\n hue,\n chroma !== null && chroma !== void 0 ? chroma : interpolateNumber(chroma0, chroma1, t),\n interpolateNumber(light0, light1, t),\n interpolateNumber(alphaF, alphaT, t),\n ]);\n return new Color(r, g, b, alpha, false);\n }\n case 'lab': {\n const [r, g, b, alpha] = labToRgb(interpolateArray(from.lab, to.lab, t));\n return new Color(r, g, b, alpha, false);\n }\n }\n }\n}\nColor.black = new Color(0, 0, 0, 1);\nColor.white = new Color(1, 1, 1, 1);\nColor.transparent = new Color(0, 0, 0, 0);\nColor.red = new Color(1, 0, 0, 1);\n\n// Flow type declarations for Intl cribbed from\n// https://github.com/facebook/flow/issues/1270\nclass Collator {\n constructor(caseSensitive, diacriticSensitive, locale) {\n if (caseSensitive)\n this.sensitivity = diacriticSensitive ? 'variant' : 'case';\n else\n this.sensitivity = diacriticSensitive ? 'accent' : 'base';\n this.locale = locale;\n this.collator = new Intl.Collator(this.locale ? this.locale : [], { sensitivity: this.sensitivity, usage: 'search' });\n }\n compare(lhs, rhs) {\n return this.collator.compare(lhs, rhs);\n }\n resolvedLocale() {\n // We create a Collator without \"usage: search\" because we don't want\n // the search options encoded in our result (e.g. \"en-u-co-search\")\n return new Intl.Collator(this.locale ? this.locale : [])\n .resolvedOptions().locale;\n }\n}\n\nclass FormattedSection {\n constructor(text, image, scale, fontStack, textColor) {\n this.text = text;\n this.image = image;\n this.scale = scale;\n this.fontStack = fontStack;\n this.textColor = textColor;\n }\n}\nclass Formatted {\n constructor(sections) {\n this.sections = sections;\n }\n static fromString(unformatted) {\n return new Formatted([new FormattedSection(unformatted, null, null, null, null)]);\n }\n isEmpty() {\n if (this.sections.length === 0)\n return true;\n return !this.sections.some(section => section.text.length !== 0 ||\n (section.image && section.image.name.length !== 0));\n }\n static factory(text) {\n if (text instanceof Formatted) {\n return text;\n }\n else {\n return Formatted.fromString(text);\n }\n }\n toString() {\n if (this.sections.length === 0)\n return '';\n return this.sections.map(section => section.text).join('');\n }\n}\n\n/**\n * A set of four numbers representing padding around a box. Create instances from\n * bare arrays or numeric values using the static method `Padding.parse`.\n * @private\n */\nclass Padding {\n constructor(values) {\n this.values = values.slice();\n }\n /**\n * Numeric padding values\n * @param input A padding value\n * @returns A `Padding` instance, or `undefined` if the input is not a valid padding value.\n */\n static parse(input) {\n if (input instanceof Padding) {\n return input;\n }\n // Backwards compatibility: bare number is treated the same as array with single value.\n // Padding applies to all four sides.\n if (typeof input === 'number') {\n return new Padding([input, input, input, input]);\n }\n if (!Array.isArray(input)) {\n return undefined;\n }\n if (input.length < 1 || input.length > 4) {\n return undefined;\n }\n for (const val of input) {\n if (typeof val !== 'number') {\n return undefined;\n }\n }\n // Expand shortcut properties into explicit 4-sided values\n switch (input.length) {\n case 1:\n input = [input[0], input[0], input[0], input[0]];\n break;\n case 2:\n input = [input[0], input[1], input[0], input[1]];\n break;\n case 3:\n input = [input[0], input[1], input[2], input[1]];\n break;\n }\n return new Padding(input);\n }\n toString() {\n return JSON.stringify(this.values);\n }\n static interpolate(from, to, t) {\n return new Padding(interpolateArray(from.values, to.values, t));\n }\n}\n\nclass RuntimeError {\n constructor(message) {\n this.name = 'ExpressionEvaluationError';\n this.message = message;\n }\n toJSON() {\n return this.message;\n }\n}\n\n/** Set of valid anchor positions, as a set for validation */\nconst anchors = new Set(['center', 'left', 'right', 'top', 'bottom', 'top-left', 'top-right', 'bottom-left', 'bottom-right']);\n/**\n * Utility class to assist managing values for text-variable-anchor-offset property. Create instances from\n * bare arrays using the static method `VariableAnchorOffsetCollection.parse`.\n * @private\n */\nclass VariableAnchorOffsetCollection {\n constructor(values) {\n this.values = values.slice();\n }\n static parse(input) {\n if (input instanceof VariableAnchorOffsetCollection) {\n return input;\n }\n if (!Array.isArray(input) ||\n input.length < 1 ||\n input.length % 2 !== 0) {\n return undefined;\n }\n for (let i = 0; i < input.length; i += 2) {\n // Elements in even positions should be anchor positions; Elements in odd positions should be offset values\n const anchorValue = input[i];\n const offsetValue = input[i + 1];\n if (typeof anchorValue !== 'string' || !anchors.has(anchorValue)) {\n return undefined;\n }\n if (!Array.isArray(offsetValue) || offsetValue.length !== 2 || typeof offsetValue[0] !== 'number' || typeof offsetValue[1] !== 'number') {\n return undefined;\n }\n }\n return new VariableAnchorOffsetCollection(input);\n }\n toString() {\n return JSON.stringify(this.values);\n }\n static interpolate(from, to, t) {\n const fromValues = from.values;\n const toValues = to.values;\n if (fromValues.length !== toValues.length) {\n throw new RuntimeError(`Cannot interpolate values of different length. from: ${from.toString()}, to: ${to.toString()}`);\n }\n const output = [];\n for (let i = 0; i < fromValues.length; i += 2) {\n // Anchor entries must match\n if (fromValues[i] !== toValues[i]) {\n throw new RuntimeError(`Cannot interpolate values containing mismatched anchors. from[${i}]: ${fromValues[i]}, to[${i}]: ${toValues[i]}`);\n }\n output.push(fromValues[i]);\n // Interpolate the offset values for each anchor\n const [fx, fy] = fromValues[i + 1];\n const [tx, ty] = toValues[i + 1];\n output.push([interpolateNumber(fx, tx, t), interpolateNumber(fy, ty, t)]);\n }\n return new VariableAnchorOffsetCollection(output);\n }\n}\n\nclass ResolvedImage {\n constructor(options) {\n this.name = options.name;\n this.available = options.available;\n }\n toString() {\n return this.name;\n }\n static fromString(name) {\n if (!name)\n return null; // treat empty values as no image\n return new ResolvedImage({ name, available: false });\n }\n}\n\nclass ProjectionDefinition {\n constructor(from, to, transition) {\n this.from = from;\n this.to = to;\n this.transition = transition;\n }\n static interpolate(from, to, t) {\n return new ProjectionDefinition(from, to, t);\n }\n static parse(input) {\n if (input instanceof ProjectionDefinition) {\n return input;\n }\n if (Array.isArray(input) && input.length === 3 && typeof input[0] === 'string' && typeof input[1] === 'string' && typeof input[2] === 'number') {\n return new ProjectionDefinition(input[0], input[1], input[2]);\n }\n if (typeof input === 'object' && typeof input.from === 'string' && typeof input.to === 'string' && typeof input.transition === 'number') {\n return new ProjectionDefinition(input.from, input.to, input.transition);\n }\n if (typeof input === 'string') {\n return new ProjectionDefinition(input, input, 1);\n }\n return undefined;\n }\n}\n\nfunction validateRGBA(r, g, b, a) {\n if (!(typeof r === 'number' && r >= 0 && r <= 255 &&\n typeof g === 'number' && g >= 0 && g <= 255 &&\n typeof b === 'number' && b >= 0 && b <= 255)) {\n const value = typeof a === 'number' ? [r, g, b, a] : [r, g, b];\n return `Invalid rgba value [${value.join(', ')}]: 'r', 'g', and 'b' must be between 0 and 255.`;\n }\n if (!(typeof a === 'undefined' || (typeof a === 'number' && a >= 0 && a <= 1))) {\n return `Invalid rgba value [${[r, g, b, a].join(', ')}]: 'a' must be between 0 and 1.`;\n }\n return null;\n}\nfunction isValue(mixed) {\n if (mixed === null ||\n typeof mixed === 'string' ||\n typeof mixed === 'boolean' ||\n typeof mixed === 'number' ||\n mixed instanceof ProjectionDefinition ||\n mixed instanceof Color ||\n mixed instanceof Collator ||\n mixed instanceof Formatted ||\n mixed instanceof Padding ||\n mixed instanceof VariableAnchorOffsetCollection ||\n mixed instanceof ResolvedImage) {\n return true;\n }\n else if (Array.isArray(mixed)) {\n for (const item of mixed) {\n if (!isValue(item)) {\n return false;\n }\n }\n return true;\n }\n else if (typeof mixed === 'object') {\n for (const key in mixed) {\n if (!isValue(mixed[key])) {\n return false;\n }\n }\n return true;\n }\n else {\n return false;\n }\n}\nfunction typeOf(value) {\n if (value === null) {\n return NullType;\n }\n else if (typeof value === 'string') {\n return StringType;\n }\n else if (typeof value === 'boolean') {\n return BooleanType;\n }\n else if (typeof value === 'number') {\n return NumberType;\n }\n else if (value instanceof Color) {\n return ColorType;\n }\n else if (value instanceof ProjectionDefinition) {\n return ProjectionDefinitionType;\n }\n else if (value instanceof Collator) {\n return CollatorType;\n }\n else if (value instanceof Formatted) {\n return FormattedType;\n }\n else if (value instanceof Padding) {\n return PaddingType;\n }\n else if (value instanceof VariableAnchorOffsetCollection) {\n return VariableAnchorOffsetCollectionType;\n }\n else if (value instanceof ResolvedImage) {\n return ResolvedImageType;\n }\n else if (Array.isArray(value)) {\n const length = value.length;\n let itemType;\n for (const item of value) {\n const t = typeOf(item);\n if (!itemType) {\n itemType = t;\n }\n else if (itemType === t) {\n continue;\n }\n else {\n itemType = ValueType;\n break;\n }\n }\n return array(itemType || ValueType, length);\n }\n else {\n return ObjectType;\n }\n}\nfunction valueToString(value) {\n const type = typeof value;\n if (value === null) {\n return '';\n }\n else if (type === 'string' || type === 'number' || type === 'boolean') {\n return String(value);\n }\n else if (value instanceof Color || value instanceof ProjectionDefinition || value instanceof Formatted || value instanceof Padding || value instanceof VariableAnchorOffsetCollection || value instanceof ResolvedImage) {\n return value.toString();\n }\n else {\n return JSON.stringify(value);\n }\n}\n\nclass Literal {\n constructor(type, value) {\n this.type = type;\n this.value = value;\n }\n static parse(args, context) {\n if (args.length !== 2)\n return context.error(`'literal' expression requires exactly one argument, but found ${args.length - 1} instead.`);\n if (!isValue(args[1]))\n return context.error('invalid value');\n const value = args[1];\n let type = typeOf(value);\n // special case: infer the item type if possible for zero-length arrays\n const expected = context.expectedType;\n if (type.kind === 'array' &&\n type.N === 0 &&\n expected &&\n expected.kind === 'array' &&\n (typeof expected.N !== 'number' || expected.N === 0)) {\n type = expected;\n }\n return new Literal(type, value);\n }\n evaluate() {\n return this.value;\n }\n eachChild() { }\n outputDefined() {\n return true;\n }\n}\n\nconst types$1 = {\n string: StringType,\n number: NumberType,\n boolean: BooleanType,\n object: ObjectType\n};\nclass Assertion {\n constructor(type, args) {\n this.type = type;\n this.args = args;\n }\n static parse(args, context) {\n if (args.length < 2)\n return context.error('Expected at least one argument.');\n let i = 1;\n let type;\n const name = args[0];\n if (name === 'array') {\n let itemType;\n if (args.length > 2) {\n const type = args[1];\n if (typeof type !== 'string' || !(type in types$1) || type === 'object')\n return context.error('The item type argument of \"array\" must be one of string, number, boolean', 1);\n itemType = types$1[type];\n i++;\n }\n else {\n itemType = ValueType;\n }\n let N;\n if (args.length > 3) {\n if (args[2] !== null &&\n (typeof args[2] !== 'number' ||\n args[2] < 0 ||\n args[2] !== Math.floor(args[2]))) {\n return context.error('The length argument to \"array\" must be a positive integer literal', 2);\n }\n N = args[2];\n i++;\n }\n type = array(itemType, N);\n }\n else {\n if (!types$1[name])\n throw new Error(`Types doesn't contain name = ${name}`);\n type = types$1[name];\n }\n const parsed = [];\n for (; i < args.length; i++) {\n const input = context.parse(args[i], i, ValueType);\n if (!input)\n return null;\n parsed.push(input);\n }\n return new Assertion(type, parsed);\n }\n evaluate(ctx) {\n for (let i = 0; i < this.args.length; i++) {\n const value = this.args[i].evaluate(ctx);\n const error = checkSubtype(this.type, typeOf(value));\n if (!error) {\n return value;\n }\n else if (i === this.args.length - 1) {\n throw new RuntimeError(`Expected value to be of type ${typeToString(this.type)}, but found ${typeToString(typeOf(value))} instead.`);\n }\n }\n throw new Error();\n }\n eachChild(fn) {\n this.args.forEach(fn);\n }\n outputDefined() {\n return this.args.every(arg => arg.outputDefined());\n }\n}\n\nconst types = {\n 'to-boolean': BooleanType,\n 'to-color': ColorType,\n 'to-number': NumberType,\n 'to-string': StringType\n};\n/**\n * Special form for error-coalescing coercion expressions \"to-number\",\n * \"to-color\". Since these coercions can fail at runtime, they accept multiple\n * arguments, only evaluating one at a time until one succeeds.\n *\n * @private\n */\nclass Coercion {\n constructor(type, args) {\n this.type = type;\n this.args = args;\n }\n static parse(args, context) {\n if (args.length < 2)\n return context.error('Expected at least one argument.');\n const name = args[0];\n if (!types[name])\n throw new Error(`Can't parse ${name} as it is not part of the known types`);\n if ((name === 'to-boolean' || name === 'to-string') && args.length !== 2)\n return context.error('Expected one argument.');\n const type = types[name];\n const parsed = [];\n for (let i = 1; i < args.length; i++) {\n const input = context.parse(args[i], i, ValueType);\n if (!input)\n return null;\n parsed.push(input);\n }\n return new Coercion(type, parsed);\n }\n evaluate(ctx) {\n switch (this.type.kind) {\n case 'boolean':\n return Boolean(this.args[0].evaluate(ctx));\n case 'color': {\n let input;\n let error;\n for (const arg of this.args) {\n input = arg.evaluate(ctx);\n error = null;\n if (input instanceof Color) {\n return input;\n }\n else if (typeof input === 'string') {\n const c = ctx.parseColor(input);\n if (c)\n return c;\n }\n else if (Array.isArray(input)) {\n if (input.length < 3 || input.length > 4) {\n error = `Invalid rgba value ${JSON.stringify(input)}: expected an array containing either three or four numeric values.`;\n }\n else {\n error = validateRGBA(input[0], input[1], input[2], input[3]);\n }\n if (!error) {\n return new Color(input[0] / 255, input[1] / 255, input[2] / 255, input[3]);\n }\n }\n }\n throw new RuntimeError(error || `Could not parse color from value '${typeof input === 'string' ? input : JSON.stringify(input)}'`);\n }\n case 'padding': {\n let input;\n for (const arg of this.args) {\n input = arg.evaluate(ctx);\n const pad = Padding.parse(input);\n if (pad) {\n return pad;\n }\n }\n throw new RuntimeError(`Could not parse padding from value '${typeof input === 'string' ? input : JSON.stringify(input)}'`);\n }\n case 'variableAnchorOffsetCollection': {\n let input;\n for (const arg of this.args) {\n input = arg.evaluate(ctx);\n const coll = VariableAnchorOffsetCollection.parse(input);\n if (coll) {\n return coll;\n }\n }\n throw new RuntimeError(`Could not parse variableAnchorOffsetCollection from value '${typeof input === 'string' ? input : JSON.stringify(input)}'`);\n }\n case 'number': {\n let value = null;\n for (const arg of this.args) {\n value = arg.evaluate(ctx);\n if (value === null)\n return 0;\n const num = Number(value);\n if (isNaN(num))\n continue;\n return num;\n }\n throw new RuntimeError(`Could not convert ${JSON.stringify(value)} to number.`);\n }\n case 'formatted':\n // There is no explicit 'to-formatted' but this coercion can be implicitly\n // created by properties that expect the 'formatted' type.\n return Formatted.fromString(valueToString(this.args[0].evaluate(ctx)));\n case 'resolvedImage':\n return ResolvedImage.fromString(valueToString(this.args[0].evaluate(ctx)));\n case 'projectionDefinition':\n return this.args[0].evaluate(ctx);\n default:\n return valueToString(this.args[0].evaluate(ctx));\n }\n }\n eachChild(fn) {\n this.args.forEach(fn);\n }\n outputDefined() {\n return this.args.every(arg => arg.outputDefined());\n }\n}\n\n/**\n * Rearranges items so that all items in the [left, k] are the smallest.\n * The k-th element will have the (k - left + 1)-th smallest value in [left, right].\n *\n * @template T\n * @param {T[]} arr the array to partially sort (in place)\n * @param {number} k middle index for partial sorting (as defined above)\n * @param {number} [left=0] left index of the range to sort\n * @param {number} [right=arr.length-1] right index\n * @param {(a: T, b: T) => number} [compare = (a, b) => a - b] compare function\n */\nfunction quickselect(arr, k, left = 0, right = arr.length - 1, compare = defaultCompare) {\n\n while (right > left) {\n if (right - left > 600) {\n const n = right - left + 1;\n const m = k - left + 1;\n const z = Math.log(n);\n const s = 0.5 * Math.exp(2 * z / 3);\n const sd = 0.5 * Math.sqrt(z * s * (n - s) / n) * (m - n / 2 < 0 ? -1 : 1);\n const newLeft = Math.max(left, Math.floor(k - m * s / n + sd));\n const newRight = Math.min(right, Math.floor(k + (n - m) * s / n + sd));\n quickselect(arr, k, newLeft, newRight, compare);\n }\n\n const t = arr[k];\n let i = left;\n /** @type {number} */\n let j = right;\n\n swap(arr, left, k);\n if (compare(arr[right], t) > 0) swap(arr, left, right);\n\n while (i < j) {\n swap(arr, i, j);\n i++;\n j--;\n while (compare(arr[i], t) < 0) i++;\n while (compare(arr[j], t) > 0) j--;\n }\n\n if (compare(arr[left], t) === 0) swap(arr, left, j);\n else {\n j++;\n swap(arr, j, right);\n }\n\n if (j <= k) left = j + 1;\n if (k <= j) right = j - 1;\n }\n}\n\n/**\n * @template T\n * @param {T[]} arr\n * @param {number} i\n * @param {number} j\n */\nfunction swap(arr, i, j) {\n const tmp = arr[i];\n arr[i] = arr[j];\n arr[j] = tmp;\n}\n\n/**\n * @template T\n * @param {T} a\n * @param {T} b\n * @returns {number}\n */\nfunction defaultCompare(a, b) {\n return a < b ? -1 : a > b ? 1 : 0;\n}\n\n/**\n * Classifies an array of rings into polygons with outer rings and holes\n * @param rings - the rings to classify\n * @param maxRings - the maximum number of rings to include in a polygon, use 0 to include all rings\n * @returns an array of polygons with internal rings as holes\n */\nfunction classifyRings(rings, maxRings) {\n const len = rings.length;\n if (len <= 1)\n return [rings];\n const polygons = [];\n let polygon;\n let ccw;\n for (const ring of rings) {\n const area = calculateSignedArea(ring);\n if (area === 0)\n continue;\n ring.area = Math.abs(area);\n if (ccw === undefined)\n ccw = area < 0;\n if (ccw === area < 0) {\n if (polygon)\n polygons.push(polygon);\n polygon = [ring];\n }\n else {\n polygon.push(ring);\n }\n }\n if (polygon)\n polygons.push(polygon);\n // Earcut performance degrades with the # of rings in a polygon. For this\n // reason, we limit strip out all but the `maxRings` largest rings.\n if (maxRings > 1) {\n for (let j = 0; j < polygons.length; j++) {\n if (polygons[j].length <= maxRings)\n continue;\n quickselect(polygons[j], maxRings, 1, polygons[j].length - 1, compareAreas);\n polygons[j] = polygons[j].slice(0, maxRings);\n }\n }\n return polygons;\n}\nfunction compareAreas(a, b) {\n return b.area - a.area;\n}\n/**\n * Returns the signed area for the polygon ring. Positive areas are exterior rings and\n * have a clockwise winding. Negative areas are interior rings and have a counter clockwise\n * ordering.\n *\n * @param ring - Exterior or interior ring\n * @returns Signed area\n */\nfunction calculateSignedArea(ring) {\n let sum = 0;\n for (let i = 0, len = ring.length, j = len - 1, p1, p2; i < len; j = i++) {\n p1 = ring[i];\n p2 = ring[j];\n sum += (p2.x - p1.x) * (p1.y + p2.y);\n }\n return sum;\n}\n/**\n * Returns if there are multiple outer rings.\n * The first ring is an outer ring. Its direction, cw or ccw, defines the direction of outer rings.\n *\n * @param rings - List of rings\n * @returns Are there multiple outer rings\n */\nfunction hasMultipleOuterRings(rings) {\n // Following https://github.com/mapbox/vector-tile-js/blob/77851380b63b07fd0af3d5a3f144cc86fb39fdd1/lib/vectortilefeature.js#L197\n const len = rings.length;\n for (let i = 0, direction; i < len; i++) {\n const area = calculateSignedArea(rings[i]);\n if (area === 0)\n continue;\n if (direction === undefined) {\n // Keep the direction of the first ring\n direction = area < 0;\n }\n else if (direction === area < 0) {\n // Same direction as the first ring -> a second outer ring\n return true;\n }\n }\n return false;\n}\n\nconst geometryTypes = ['Unknown', 'Point', 'LineString', 'Polygon'];\nconst simpleGeometryType = {\n 'Unknown': 'Unknown',\n 'Point': 'Point',\n 'MultiPoint': 'Point',\n 'LineString': 'LineString',\n 'MultiLineString': 'LineString',\n 'Polygon': 'Polygon',\n 'MultiPolygon': 'Polygon'\n};\nclass EvaluationContext {\n constructor() {\n this.globals = null;\n this.feature = null;\n this.featureState = null;\n this.formattedSection = null;\n this._parseColorCache = {};\n this.availableImages = null;\n this.canonical = null;\n }\n id() {\n return this.feature && 'id' in this.feature ? this.feature.id : null;\n }\n geometryDollarType() {\n return this.feature ?\n typeof this.feature.type === 'number' ? geometryTypes[this.feature.type] : simpleGeometryType[this.feature.type] :\n null;\n }\n geometryType() {\n let geometryType = this.feature.type;\n if (typeof geometryType !== 'number') {\n return geometryType;\n }\n geometryType = geometryTypes[this.feature.type];\n if (geometryType === 'Unknown') {\n return geometryType;\n }\n const geom = this.geometry();\n const len = geom.length;\n if (len === 1) {\n return geometryType;\n }\n if (geometryType !== 'Polygon') {\n return `Multi${geometryType}`;\n }\n if (hasMultipleOuterRings(geom)) {\n return 'MultiPolygon';\n }\n return 'Polygon';\n }\n geometry() {\n return this.feature && 'geometry' in this.feature ? this.feature.geometry : null;\n }\n canonicalID() {\n return this.canonical;\n }\n properties() {\n return this.feature && this.feature.properties || {};\n }\n parseColor(input) {\n let cached = this._parseColorCache[input];\n if (!cached) {\n cached = this._parseColorCache[input] = Color.parse(input);\n }\n return cached;\n }\n}\n\n/**\n * State associated parsing at a given point in an expression tree.\n * @private\n */\nclass ParsingContext {\n constructor(registry, isConstantFunc, path = [], expectedType, scope = new Scope(), errors = []) {\n this.registry = registry;\n this.path = path;\n this.key = path.map(part => `[${part}]`).join('');\n this.scope = scope;\n this.errors = errors;\n this.expectedType = expectedType;\n this._isConstant = isConstantFunc;\n }\n /**\n * @param expr the JSON expression to parse\n * @param index the optional argument index if this expression is an argument of a parent expression that's being parsed\n * @param options\n * @param options.omitTypeAnnotations set true to omit inferred type annotations. Caller beware: with this option set, the parsed expression's type will NOT satisfy `expectedType` if it would normally be wrapped in an inferred annotation.\n * @private\n */\n parse(expr, index, expectedType, bindings, options = {}) {\n if (index) {\n return this.concat(index, expectedType, bindings)._parse(expr, options);\n }\n return this._parse(expr, options);\n }\n _parse(expr, options) {\n if (expr === null || typeof expr === 'string' || typeof expr === 'boolean' || typeof expr === 'number') {\n expr = ['literal', expr];\n }\n function annotate(parsed, type, typeAnnotation) {\n if (typeAnnotation === 'assert') {\n return new Assertion(type, [parsed]);\n }\n else if (typeAnnotation === 'coerce') {\n return new Coercion(type, [parsed]);\n }\n else {\n return parsed;\n }\n }\n if (Array.isArray(expr)) {\n if (expr.length === 0) {\n return this.error('Expected an array with at least one element. If you wanted a literal array, use [\"literal\", []].');\n }\n const op = expr[0];\n if (typeof op !== 'string') {\n this.error(`Expression name must be a string, but found ${typeof op} instead. If you wanted a literal array, use [\"literal\", [...]].`, 0);\n return null;\n }\n const Expr = this.registry[op];\n if (Expr) {\n let parsed = Expr.parse(expr, this);\n if (!parsed)\n return null;\n if (this.expectedType) {\n const expected = this.expectedType;\n const actual = parsed.type;\n // When we expect a number, string, boolean, or array but have a value, wrap it in an assertion.\n // When we expect a color or formatted string, but have a string or value, wrap it in a coercion.\n // Otherwise, we do static type-checking.\n //\n // These behaviors are overridable for:\n // * The \"coalesce\" operator, which needs to omit type annotations.\n // * String-valued properties (e.g. `text-field`), where coercion is more convenient than assertion.\n //\n if ((expected.kind === 'string' || expected.kind === 'number' || expected.kind === 'boolean' || expected.kind === 'object' || expected.kind === 'array') && actual.kind === 'value') {\n parsed = annotate(parsed, expected, options.typeAnnotation || 'assert');\n }\n else if ((expected.kind === 'projectionDefinition') && (actual.kind === 'string' || actual.kind === 'array')) {\n parsed = annotate(parsed, expected, options.typeAnnotation || 'coerce');\n }\n else if ((expected.kind === 'color' || expected.kind === 'formatted' || expected.kind === 'resolvedImage') && (actual.kind === 'value' || actual.kind === 'string')) {\n parsed = annotate(parsed, expected, options.typeAnnotation || 'coerce');\n }\n else if (expected.kind === 'padding' && (actual.kind === 'value' || actual.kind === 'number' || actual.kind === 'array')) {\n parsed = annotate(parsed, expected, options.typeAnnotation || 'coerce');\n }\n else if (expected.kind === 'variableAnchorOffsetCollection' && (actual.kind === 'value' || actual.kind === 'array')) {\n parsed = annotate(parsed, expected, options.typeAnnotation || 'coerce');\n }\n else if (this.checkSubtype(expected, actual)) {\n return null;\n }\n }\n // If an expression's arguments are all literals, we can evaluate\n // it immediately and replace it with a literal value in the\n // parsed/compiled result. Expressions that expect an image should\n // not be resolved here so we can later get the available images.\n if (!(parsed instanceof Literal) && (parsed.type.kind !== 'resolvedImage') && this._isConstant(parsed)) {\n const ec = new EvaluationContext();\n try {\n parsed = new Literal(parsed.type, parsed.evaluate(ec));\n }\n catch (e) {\n this.error(e.message);\n return null;\n }\n }\n return parsed;\n }\n return this.error(`Unknown expression \"${op}\". If you wanted a literal array, use [\"literal\", [...]].`, 0);\n }\n else if (typeof expr === 'undefined') {\n return this.error('\\'undefined\\' value invalid. Use null instead.');\n }\n else if (typeof expr === 'object') {\n return this.error('Bare objects invalid. Use [\"literal\", {...}] instead.');\n }\n else {\n return this.error(`Expected an array, but found ${typeof expr} instead.`);\n }\n }\n /**\n * Returns a copy of this context suitable for parsing the subexpression at\n * index `index`, optionally appending to 'let' binding map.\n *\n * Note that `errors` property, intended for collecting errors while\n * parsing, is copied by reference rather than cloned.\n * @private\n */\n concat(index, expectedType, bindings) {\n const path = typeof index === 'number' ? this.path.concat(index) : this.path;\n const scope = bindings ? this.scope.concat(bindings) : this.scope;\n return new ParsingContext(this.registry, this._isConstant, path, expectedType || null, scope, this.errors);\n }\n /**\n * Push a parsing (or type checking) error into the `this.errors`\n * @param error The message\n * @param keys Optionally specify the source of the error at a child\n * of the current expression at `this.key`.\n * @private\n */\n error(error, ...keys) {\n const key = `${this.key}${keys.map(k => `[${k}]`).join('')}`;\n this.errors.push(new ExpressionParsingError(key, error));\n }\n /**\n * Returns null if `t` is a subtype of `expected`; otherwise returns an\n * error message and also pushes it to `this.errors`.\n * @param expected The expected type\n * @param t The actual type\n * @returns null if `t` is a subtype of `expected`; otherwise returns an error message\n */\n checkSubtype(expected, t) {\n const error = checkSubtype(expected, t);\n if (error)\n this.error(error);\n return error;\n }\n}\n\nclass Let {\n constructor(bindings, result) {\n this.type = result.type;\n this.bindings = [].concat(bindings);\n this.result = result;\n }\n evaluate(ctx) {\n return this.result.evaluate(ctx);\n }\n eachChild(fn) {\n for (const binding of this.bindings) {\n fn(binding[1]);\n }\n fn(this.result);\n }\n static parse(args, context) {\n if (args.length < 4)\n return context.error(`Expected at least 3 arguments, but found ${args.length - 1} instead.`);\n const bindings = [];\n for (let i = 1; i < args.length - 1; i += 2) {\n const name = args[i];\n if (typeof name !== 'string') {\n return context.error(`Expected string, but found ${typeof name} instead.`, i);\n }\n if (/[^a-zA-Z0-9_]/.test(name)) {\n return context.error('Variable names must contain only alphanumeric characters or \\'_\\'.', i);\n }\n const value = context.parse(args[i + 1], i + 1);\n if (!value)\n return null;\n bindings.push([name, value]);\n }\n const result = context.parse(args[args.length - 1], args.length - 1, context.expectedType, bindings);\n if (!result)\n return null;\n return new Let(bindings, result);\n }\n outputDefined() {\n return this.result.outputDefined();\n }\n}\n\nclass Var {\n constructor(name, boundExpression) {\n this.type = boundExpression.type;\n this.name = name;\n this.boundExpression = boundExpression;\n }\n static parse(args, context) {\n if (args.length !== 2 || typeof args[1] !== 'string')\n return context.error('\\'var\\' expression requires exactly one string literal argument.');\n const name = args[1];\n if (!context.scope.has(name)) {\n return context.error(`Unknown variable \"${name}\". Make sure \"${name}\" has been bound in an enclosing \"let\" expression before using it.`, 1);\n }\n return new Var(name, context.scope.get(name));\n }\n evaluate(ctx) {\n return this.boundExpression.evaluate(ctx);\n }\n eachChild() { }\n outputDefined() {\n return false;\n }\n}\n\nclass At {\n constructor(type, index, input) {\n this.type = type;\n this.index = index;\n this.input = input;\n }\n static parse(args, context) {\n if (args.length !== 3)\n return context.error(`Expected 2 arguments, but found ${args.length - 1} instead.`);\n const index = context.parse(args[1], 1, NumberType);\n const input = context.parse(args[2], 2, array(context.expectedType || ValueType));\n if (!index || !input)\n return null;\n const t = input.type;\n return new At(t.itemType, index, input);\n }\n evaluate(ctx) {\n const index = this.index.evaluate(ctx);\n const array = this.input.evaluate(ctx);\n if (index < 0) {\n throw new RuntimeError(`Array index out of bounds: ${index} < 0.`);\n }\n if (index >= array.length) {\n throw new RuntimeError(`Array index out of bounds: ${index} > ${array.length - 1}.`);\n }\n if (index !== Math.floor(index)) {\n throw new RuntimeError(`Array index must be an integer, but found ${index} instead.`);\n }\n return array[index];\n }\n eachChild(fn) {\n fn(this.index);\n fn(this.input);\n }\n outputDefined() {\n return false;\n }\n}\n\nclass In {\n constructor(needle, haystack) {\n this.type = BooleanType;\n this.needle = needle;\n this.haystack = haystack;\n }\n static parse(args, context) {\n if (args.length !== 3) {\n return context.error(`Expected 2 arguments, but found ${args.length - 1} instead.`);\n }\n const needle = context.parse(args[1], 1, ValueType);\n const haystack = context.parse(args[2], 2, ValueType);\n if (!needle || !haystack)\n return null;\n if (!isValidType(needle.type, [BooleanType, StringType, NumberType, NullType, ValueType])) {\n return context.error(`Expected first argument to be of type boolean, string, number or null, but found ${typeToString(needle.type)} instead`);\n }\n return new In(needle, haystack);\n }\n evaluate(ctx) {\n const needle = this.needle.evaluate(ctx);\n const haystack = this.haystack.evaluate(ctx);\n if (!haystack)\n return false;\n if (!isValidNativeType(needle, ['boolean', 'string', 'number', 'null'])) {\n throw new RuntimeError(`Expected first argument to be of type boolean, string, number or null, but found ${typeToString(typeOf(needle))} instead.`);\n }\n if (!isValidNativeType(haystack, ['string', 'array'])) {\n throw new RuntimeError(`Expected second argument to be of type array or string, but found ${typeToString(typeOf(haystack))} instead.`);\n }\n return haystack.indexOf(needle) >= 0;\n }\n eachChild(fn) {\n fn(this.needle);\n fn(this.haystack);\n }\n outputDefined() {\n return true;\n }\n}\n\nclass IndexOf {\n constructor(needle, haystack, fromIndex) {\n this.type = NumberType;\n this.needle = needle;\n this.haystack = haystack;\n this.fromIndex = fromIndex;\n }\n static parse(args, context) {\n if (args.length <= 2 || args.length >= 5) {\n return context.error(`Expected 3 or 4 arguments, but found ${args.length - 1} instead.`);\n }\n const needle = context.parse(args[1], 1, ValueType);\n const haystack = context.parse(args[2], 2, ValueType);\n if (!needle || !haystack)\n return null;\n if (!isValidType(needle.type, [BooleanType, StringType, NumberType, NullType, ValueType])) {\n return context.error(`Expected first argument to be of type boolean, string, number or null, but found ${typeToString(needle.type)} instead`);\n }\n if (args.length === 4) {\n const fromIndex = context.parse(args[3], 3, NumberType);\n if (!fromIndex)\n return null;\n return new IndexOf(needle, haystack, fromIndex);\n }\n else {\n return new IndexOf(needle, haystack);\n }\n }\n evaluate(ctx) {\n const needle = this.needle.evaluate(ctx);\n const haystack = this.haystack.evaluate(ctx);\n if (!isValidNativeType(needle, ['boolean', 'string', 'number', 'null'])) {\n throw new RuntimeError(`Expected first argument to be of type boolean, string, number or null, but found ${typeToString(typeOf(needle))} instead.`);\n }\n let fromIndex;\n if (this.fromIndex) {\n fromIndex = this.fromIndex.evaluate(ctx);\n }\n if (isValidNativeType(haystack, ['string'])) {\n const rawIndex = haystack.indexOf(needle, fromIndex);\n if (rawIndex === -1) {\n return -1;\n }\n else {\n // The index may be affected by surrogate pairs, so get the length of the preceding substring.\n return [...haystack.slice(0, rawIndex)].length;\n }\n }\n else if (isValidNativeType(haystack, ['array'])) {\n return haystack.indexOf(needle, fromIndex);\n }\n else {\n throw new RuntimeError(`Expected second argument to be of type array or string, but found ${typeToString(typeOf(haystack))} instead.`);\n }\n }\n eachChild(fn) {\n fn(this.needle);\n fn(this.haystack);\n if (this.fromIndex) {\n fn(this.fromIndex);\n }\n }\n outputDefined() {\n return false;\n }\n}\n\nclass Match {\n constructor(inputType, outputType, input, cases, outputs, otherwise) {\n this.inputType = inputType;\n this.type = outputType;\n this.input = input;\n this.cases = cases;\n this.outputs = outputs;\n this.otherwise = otherwise;\n }\n static parse(args, context) {\n if (args.length < 5)\n return context.error(`Expected at least 4 arguments, but found only ${args.length - 1}.`);\n if (args.length % 2 !== 1)\n return context.error('Expected an even number of arguments.');\n let inputType;\n let outputType;\n if (context.expectedType && context.expectedType.kind !== 'value') {\n outputType = context.expectedType;\n }\n const cases = {};\n const outputs = [];\n for (let i = 2; i < args.length - 1; i += 2) {\n let labels = args[i];\n const value = args[i + 1];\n if (!Array.isArray(labels)) {\n labels = [labels];\n }\n const labelContext = context.concat(i);\n if (labels.length === 0) {\n return labelContext.error('Expected at least one branch label.');\n }\n for (const label of labels) {\n if (typeof label !== 'number' && typeof label !== 'string') {\n return labelContext.error('Branch labels must be numbers or strings.');\n }\n else if (typeof label === 'number' && Math.abs(label) > Number.MAX_SAFE_INTEGER) {\n return labelContext.error(`Branch labels must be integers no larger than ${Number.MAX_SAFE_INTEGER}.`);\n }\n else if (typeof label === 'number' && Math.floor(label) !== label) {\n return labelContext.error('Numeric branch labels must be integer values.');\n }\n else if (!inputType) {\n inputType = typeOf(label);\n }\n else if (labelContext.checkSubtype(inputType, typeOf(label))) {\n return null;\n }\n if (typeof cases[String(label)] !== 'undefined') {\n return labelContext.error('Branch labels must be unique.');\n }\n cases[String(label)] = outputs.length;\n }\n const result = context.parse(value, i, outputType);\n if (!result)\n return null;\n outputType = outputType || result.type;\n outputs.push(result);\n }\n const input = context.parse(args[1], 1, ValueType);\n if (!input)\n return null;\n const otherwise = context.parse(args[args.length - 1], args.length - 1, outputType);\n if (!otherwise)\n return null;\n if (input.type.kind !== 'value' && context.concat(1).checkSubtype(inputType, input.type)) {\n return null;\n }\n return new Match(inputType, outputType, input, cases, outputs, otherwise);\n }\n evaluate(ctx) {\n const input = this.input.evaluate(ctx);\n const output = (typeOf(input) === this.inputType && this.outputs[this.cases[input]]) || this.otherwise;\n return output.evaluate(ctx);\n }\n eachChild(fn) {\n fn(this.input);\n this.outputs.forEach(fn);\n fn(this.otherwise);\n }\n outputDefined() {\n return this.outputs.every(out => out.outputDefined()) && this.otherwise.outputDefined();\n }\n}\n\nclass Case {\n constructor(type, branches, otherwise) {\n this.type = type;\n this.branches = branches;\n this.otherwise = otherwise;\n }\n static parse(args, context) {\n if (args.length < 4)\n return context.error(`Expected at least 3 arguments, but found only ${args.length - 1}.`);\n if (args.length % 2 !== 0)\n return context.error('Expected an odd number of arguments.');\n let outputType;\n if (context.expectedType && context.expectedType.kind !== 'value') {\n outputType = context.expectedType;\n }\n const branches = [];\n for (let i = 1; i < args.length - 1; i += 2) {\n const test = context.parse(args[i], i, BooleanType);\n if (!test)\n return null;\n const result = context.parse(args[i + 1], i + 1, outputType);\n if (!result)\n return null;\n branches.push([test, result]);\n outputType = outputType || result.type;\n }\n const otherwise = context.parse(args[args.length - 1], args.length - 1, outputType);\n if (!otherwise)\n return null;\n if (!outputType)\n throw new Error('Can\\'t infer output type');\n return new Case(outputType, branches, otherwise);\n }\n evaluate(ctx) {\n for (const [test, expression] of this.branches) {\n if (test.evaluate(ctx)) {\n return expression.evaluate(ctx);\n }\n }\n return this.otherwise.evaluate(ctx);\n }\n eachChild(fn) {\n for (const [test, expression] of this.branches) {\n fn(test);\n fn(expression);\n }\n fn(this.otherwise);\n }\n outputDefined() {\n return this.branches.every(([_, out]) => out.outputDefined()) && this.otherwise.outputDefined();\n }\n}\n\nclass Slice {\n constructor(type, input, beginIndex, endIndex) {\n this.type = type;\n this.input = input;\n this.beginIndex = beginIndex;\n this.endIndex = endIndex;\n }\n static parse(args, context) {\n if (args.length <= 2 || args.length >= 5) {\n return context.error(`Expected 3 or 4 arguments, but found ${args.length - 1} instead.`);\n }\n const input = context.parse(args[1], 1, ValueType);\n const beginIndex = context.parse(args[2], 2, NumberType);\n if (!input || !beginIndex)\n return null;\n if (!isValidType(input.type, [array(ValueType), StringType, ValueType])) {\n return context.error(`Expected first argument to be of type array or string, but found ${typeToString(input.type)} instead`);\n }\n if (args.length === 4) {\n const endIndex = context.parse(args[3], 3, NumberType);\n if (!endIndex)\n return null;\n return new Slice(input.type, input, beginIndex, endIndex);\n }\n else {\n return new Slice(input.type, input, beginIndex);\n }\n }\n evaluate(ctx) {\n const input = this.input.evaluate(ctx);\n const beginIndex = this.beginIndex.evaluate(ctx);\n let endIndex;\n if (this.endIndex) {\n endIndex = this.endIndex.evaluate(ctx);\n }\n if (isValidNativeType(input, ['string'])) {\n // Indices may be affected by surrogate pairs.\n return [...input].slice(beginIndex, endIndex).join('');\n }\n else if (isValidNativeType(input, ['array'])) {\n return input.slice(beginIndex, endIndex);\n }\n else {\n throw new RuntimeError(`Expected first argument to be of type array or string, but found ${typeToString(typeOf(input))} instead.`);\n }\n }\n eachChild(fn) {\n fn(this.input);\n fn(this.beginIndex);\n if (this.endIndex) {\n fn(this.endIndex);\n }\n }\n outputDefined() {\n return false;\n }\n}\n\n/**\n * Returns the index of the last stop <= input, or 0 if it doesn't exist.\n * @private\n */\nfunction findStopLessThanOrEqualTo(stops, input) {\n const lastIndex = stops.length - 1;\n let lowerIndex = 0;\n let upperIndex = lastIndex;\n let currentIndex = 0;\n let currentValue, nextValue;\n while (lowerIndex <= upperIndex) {\n currentIndex = Math.floor((lowerIndex + upperIndex) / 2);\n currentValue = stops[currentIndex];\n nextValue = stops[currentIndex + 1];\n if (currentValue <= input) {\n if (currentIndex === lastIndex || input < nextValue) { // Search complete\n return currentIndex;\n }\n lowerIndex = currentIndex + 1;\n }\n else if (currentValue > input) {\n upperIndex = currentIndex - 1;\n }\n else {\n throw new RuntimeError('Input is not a number.');\n }\n }\n return 0;\n}\n\nclass Step {\n constructor(type, input, stops) {\n this.type = type;\n this.input = input;\n this.labels = [];\n this.outputs = [];\n for (const [label, expression] of stops) {\n this.labels.push(label);\n this.outputs.push(expression);\n }\n }\n static parse(args, context) {\n if (args.length - 1 < 4) {\n return context.error(`Expected at least 4 arguments, but found only ${args.length - 1}.`);\n }\n if ((args.length - 1) % 2 !== 0) {\n return context.error('Expected an even number of arguments.');\n }\n const input = context.parse(args[1], 1, NumberType);\n if (!input)\n return null;\n const stops = [];\n let outputType = null;\n if (context.expectedType && context.expectedType.kind !== 'value') {\n outputType = context.expectedType;\n }\n for (let i = 1; i < args.length; i += 2) {\n const label = i === 1 ? -Infinity : args[i];\n const value = args[i + 1];\n const labelKey = i;\n const valueKey = i + 1;\n if (typeof label !== 'number') {\n return context.error('Input/output pairs for \"step\" expressions must be defined using literal numeric values (not computed expressions) for the input values.', labelKey);\n }\n if (stops.length && stops[stops.length - 1][0] >= label) {\n return context.error('Input/output pairs for \"step\" expressions must be arranged with input values in strictly ascending order.', labelKey);\n }\n const parsed = context.parse(value, valueKey, outputType);\n if (!parsed)\n return null;\n outputType = outputType || parsed.type;\n stops.push([label, parsed]);\n }\n return new Step(outputType, input, stops);\n }\n evaluate(ctx) {\n const labels = this.labels;\n const outputs = this.outputs;\n if (labels.length === 1) {\n return outputs[0].evaluate(ctx);\n }\n const value = this.input.evaluate(ctx);\n if (value <= labels[0]) {\n return outputs[0].evaluate(ctx);\n }\n const stopCount = labels.length;\n if (value >= labels[stopCount - 1]) {\n return outputs[stopCount - 1].evaluate(ctx);\n }\n const index = findStopLessThanOrEqualTo(labels, value);\n return outputs[index].evaluate(ctx);\n }\n eachChild(fn) {\n fn(this.input);\n for (const expression of this.outputs) {\n fn(expression);\n }\n }\n outputDefined() {\n return this.outputs.every(out => out.outputDefined());\n }\n}\n\nfunction getDefaultExportFromCjs (x) {\n\treturn x && x.__esModule && Object.prototype.hasOwnProperty.call(x, 'default') ? x['default'] : x;\n}\n\nvar unitbezier;\nvar hasRequiredUnitbezier;\n\nfunction requireUnitbezier () {\n\tif (hasRequiredUnitbezier) return unitbezier;\n\thasRequiredUnitbezier = 1;\n\n\tunitbezier = UnitBezier;\n\n\tfunction UnitBezier(p1x, p1y, p2x, p2y) {\n\t // Calculate the polynomial coefficients, implicit first and last control points are (0,0) and (1,1).\n\t this.cx = 3.0 * p1x;\n\t this.bx = 3.0 * (p2x - p1x) - this.cx;\n\t this.ax = 1.0 - this.cx - this.bx;\n\n\t this.cy = 3.0 * p1y;\n\t this.by = 3.0 * (p2y - p1y) - this.cy;\n\t this.ay = 1.0 - this.cy - this.by;\n\n\t this.p1x = p1x;\n\t this.p1y = p1y;\n\t this.p2x = p2x;\n\t this.p2y = p2y;\n\t}\n\n\tUnitBezier.prototype = {\n\t sampleCurveX: function (t) {\n\t // `ax t^3 + bx t^2 + cx t' expanded using Horner's rule.\n\t return ((this.ax * t + this.bx) * t + this.cx) * t;\n\t },\n\n\t sampleCurveY: function (t) {\n\t return ((this.ay * t + this.by) * t + this.cy) * t;\n\t },\n\n\t sampleCurveDerivativeX: function (t) {\n\t return (3.0 * this.ax * t + 2.0 * this.bx) * t + this.cx;\n\t },\n\n\t solveCurveX: function (x, epsilon) {\n\t if (epsilon === undefined) epsilon = 1e-6;\n\n\t if (x < 0.0) return 0.0;\n\t if (x > 1.0) return 1.0;\n\n\t var t = x;\n\n\t // First try a few iterations of Newton's method - normally very fast.\n\t for (var i = 0; i < 8; i++) {\n\t var x2 = this.sampleCurveX(t) - x;\n\t if (Math.abs(x2) < epsilon) return t;\n\n\t var d2 = this.sampleCurveDerivativeX(t);\n\t if (Math.abs(d2) < 1e-6) break;\n\n\t t = t - x2 / d2;\n\t }\n\n\t // Fall back to the bisection method for reliability.\n\t var t0 = 0.0;\n\t var t1 = 1.0;\n\t t = x;\n\n\t for (i = 0; i < 20; i++) {\n\t x2 = this.sampleCurveX(t);\n\t if (Math.abs(x2 - x) < epsilon) break;\n\n\t if (x > x2) {\n\t t0 = t;\n\t } else {\n\t t1 = t;\n\t }\n\n\t t = (t1 - t0) * 0.5 + t0;\n\t }\n\n\t return t;\n\t },\n\n\t solve: function (x, epsilon) {\n\t return this.sampleCurveY(this.solveCurveX(x, epsilon));\n\t }\n\t};\n\treturn unitbezier;\n}\n\nvar unitbezierExports = requireUnitbezier();\nvar UnitBezier = /*@__PURE__*/getDefaultExportFromCjs(unitbezierExports);\n\nclass Interpolate {\n constructor(type, operator, interpolation, input, stops) {\n this.type = type;\n this.operator = operator;\n this.interpolation = interpolation;\n this.input = input;\n this.labels = [];\n this.outputs = [];\n for (const [label, expression] of stops) {\n this.labels.push(label);\n this.outputs.push(expression);\n }\n }\n static interpolationFactor(interpolation, input, lower, upper) {\n let t = 0;\n if (interpolation.name === 'exponential') {\n t = exponentialInterpolation(input, interpolation.base, lower, upper);\n }\n else if (interpolation.name === 'linear') {\n t = exponentialInterpolation(input, 1, lower, upper);\n }\n else if (interpolation.name === 'cubic-bezier') {\n const c = interpolation.controlPoints;\n const ub = new UnitBezier(c[0], c[1], c[2], c[3]);\n t = ub.solve(exponentialInterpolation(input, 1, lower, upper));\n }\n return t;\n }\n static parse(args, context) {\n let [operator, interpolation, input, ...rest] = args;\n if (!Array.isArray(interpolation) || interpolation.length === 0) {\n return context.error('Expected an interpolation type expression.', 1);\n }\n if (interpolation[0] === 'linear') {\n interpolation = { name: 'linear' };\n }\n else if (interpolation[0] === 'exponential') {\n const base = interpolation[1];\n if (typeof base !== 'number')\n return context.error('Exponential interpolation requires a numeric base.', 1, 1);\n interpolation = {\n name: 'exponential',\n base\n };\n }\n else if (interpolation[0] === 'cubic-bezier') {\n const controlPoints = interpolation.slice(1);\n if (controlPoints.length !== 4 ||\n controlPoints.some(t => typeof t !== 'number' || t < 0 || t > 1)) {\n return context.error('Cubic bezier interpolation requires four numeric arguments with values between 0 and 1.', 1);\n }\n interpolation = {\n name: 'cubic-bezier',\n controlPoints: controlPoints\n };\n }\n else {\n return context.error(`Unknown interpolation type ${String(interpolation[0])}`, 1, 0);\n }\n if (args.length - 1 < 4) {\n return context.error(`Expected at least 4 arguments, but found only ${args.length - 1}.`);\n }\n if ((args.length - 1) % 2 !== 0) {\n return context.error('Expected an even number of arguments.');\n }\n input = context.parse(input, 2, NumberType);\n if (!input)\n return null;\n const stops = [];\n let outputType = null;\n if (operator === 'interpolate-hcl' || operator === 'interpolate-lab') {\n outputType = ColorType;\n }\n else if (context.expectedType && context.expectedType.kind !== 'value') {\n outputType = context.expectedType;\n }\n for (let i = 0; i < rest.length; i += 2) {\n const label = rest[i];\n const value = rest[i + 1];\n const labelKey = i + 3;\n const valueKey = i + 4;\n if (typeof label !== 'number') {\n return context.error('Input/output pairs for \"interpolate\" expressions must be defined using literal numeric values (not computed expressions) for the input values.', labelKey);\n }\n if (stops.length && stops[stops.length - 1][0] >= label) {\n return context.error('Input/output pairs for \"interpolate\" expressions must be arranged with input values in strictly ascending order.', labelKey);\n }\n const parsed = context.parse(value, valueKey, outputType);\n if (!parsed)\n return null;\n outputType = outputType || parsed.type;\n stops.push([label, parsed]);\n }\n if (!verifyType(outputType, NumberType) &&\n !verifyType(outputType, ProjectionDefinitionType) &&\n !verifyType(outputType, ColorType) &&\n !verifyType(outputType, PaddingType) &&\n !verifyType(outputType, VariableAnchorOffsetCollectionType) &&\n !verifyType(outputType, array(NumberType))) {\n return context.error(`Type ${typeToString(outputType)} is not interpolatable.`);\n }\n return new Interpolate(outputType, operator, interpolation, input, stops);\n }\n evaluate(ctx) {\n const labels = this.labels;\n const outputs = this.outputs;\n if (labels.length === 1) {\n return outputs[0].evaluate(ctx);\n }\n const value = this.input.evaluate(ctx);\n if (value <= labels[0]) {\n return outputs[0].evaluate(ctx);\n }\n const stopCount = labels.length;\n if (value >= labels[stopCount - 1]) {\n return outputs[stopCount - 1].evaluate(ctx);\n }\n const index = findStopLessThanOrEqualTo(labels, value);\n const lower = labels[index];\n const upper = labels[index + 1];\n const t = Interpolate.interpolationFactor(this.interpolation, value, lower, upper);\n const outputLower = outputs[index].evaluate(ctx);\n const outputUpper = outputs[index + 1].evaluate(ctx);\n switch (this.operator) {\n case 'interpolate':\n switch (this.type.kind) {\n case 'number':\n return interpolateNumber(outputLower, outputUpper, t);\n case 'color':\n return Color.interpolate(outputLower, outputUpper, t);\n case 'padding':\n return Padding.interpolate(outputLower, outputUpper, t);\n case 'variableAnchorOffsetCollection':\n return VariableAnchorOffsetCollection.interpolate(outputLower, outputUpper, t);\n case 'array':\n return interpolateArray(outputLower, outputUpper, t);\n case 'projectionDefinition':\n return ProjectionDefinition.interpolate(outputLower, outputUpper, t);\n }\n case 'interpolate-hcl':\n return Color.interpolate(outputLower, outputUpper, t, 'hcl');\n case 'interpolate-lab':\n return Color.interpolate(outputLower, outputUpper, t, 'lab');\n }\n }\n eachChild(fn) {\n fn(this.input);\n for (const expression of this.outputs) {\n fn(expression);\n }\n }\n outputDefined() {\n return this.outputs.every(out => out.outputDefined());\n }\n}\n/**\n * Returns a ratio that can be used to interpolate between exponential function\n * stops.\n * How it works: Two consecutive stop values define a (scaled and shifted) exponential function `f(x) = a * base^x + b`, where `base` is the user-specified base,\n * and `a` and `b` are constants affording sufficient degrees of freedom to fit\n * the function to the given stops.\n *\n * Here's a bit of algebra that lets us compute `f(x)` directly from the stop\n * values without explicitly solving for `a` and `b`:\n *\n * First stop value: `f(x0) = y0 = a * base^x0 + b`\n * Second stop value: `f(x1) = y1 = a * base^x1 + b`\n * => `y1 - y0 = a(base^x1 - base^x0)`\n * => `a = (y1 - y0)/(base^x1 - base^x0)`\n *\n * Desired value: `f(x) = y = a * base^x + b`\n * => `f(x) = y0 + a * (base^x - base^x0)`\n *\n * From the above, we can replace the `a` in `a * (base^x - base^x0)` and do a\n * little algebra:\n * ```\n * a * (base^x - base^x0) = (y1 - y0)/(base^x1 - base^x0) * (base^x - base^x0)\n * = (y1 - y0) * (base^x - base^x0) / (base^x1 - base^x0)\n * ```\n *\n * If we let `(base^x - base^x0) / (base^x1 base^x0)`, then we have\n * `f(x) = y0 + (y1 - y0) * ratio`. In other words, `ratio` may be treated as\n * an interpolation factor between the two stops' output values.\n *\n * (Note: a slightly different form for `ratio`,\n * `(base^(x-x0) - 1) / (base^(x1-x0) - 1) `, is equivalent, but requires fewer\n * expensive `Math.pow()` operations.)\n *\n * @private\n*/\nfunction exponentialInterpolation(input, base, lowerValue, upperValue) {\n const difference = upperValue - lowerValue;\n const progress = input - lowerValue;\n if (difference === 0) {\n return 0;\n }\n else if (base === 1) {\n return progress / difference;\n }\n else {\n return (Math.pow(base, progress) - 1) / (Math.pow(base, difference) - 1);\n }\n}\nconst interpolateFactory = {\n color: Color.interpolate,\n number: interpolateNumber,\n padding: Padding.interpolate,\n variableAnchorOffsetCollection: VariableAnchorOffsetCollection.interpolate,\n array: interpolateArray\n};\n\nclass Coalesce {\n constructor(type, args) {\n this.type = type;\n this.args = args;\n }\n static parse(args, context) {\n if (args.length < 2) {\n return context.error('Expected at least one argument.');\n }\n let outputType = null;\n const expectedType = context.expectedType;\n if (expectedType && expectedType.kind !== 'value') {\n outputType = expectedType;\n }\n const parsedArgs = [];\n for (const arg of args.slice(1)) {\n const parsed = context.parse(arg, 1 + parsedArgs.length, outputType, undefined, { typeAnnotation: 'omit' });\n if (!parsed)\n return null;\n outputType = outputType || parsed.type;\n parsedArgs.push(parsed);\n }\n if (!outputType)\n throw new Error('No output type');\n // Above, we parse arguments without inferred type annotation so that\n // they don't produce a runtime error for `null` input, which would\n // preempt the desired null-coalescing behavior.\n // Thus, if any of our arguments would have needed an annotation, we\n // need to wrap the enclosing coalesce expression with it instead.\n const needsAnnotation = expectedType &&\n parsedArgs.some(arg => checkSubtype(expectedType, arg.type));\n return needsAnnotation ?\n new Coalesce(ValueType, parsedArgs) :\n new Coalesce(outputType, parsedArgs);\n }\n evaluate(ctx) {\n let result = null;\n let argCount = 0;\n let requestedImageName;\n for (const arg of this.args) {\n argCount++;\n result = arg.evaluate(ctx);\n // we need to keep track of the first requested image in a coalesce statement\n // if coalesce can't find a valid image, we return the first image name so styleimagemissing can fire\n if (result && result instanceof ResolvedImage && !result.available) {\n if (!requestedImageName) {\n requestedImageName = result.name;\n }\n result = null;\n if (argCount === this.args.length) {\n result = requestedImageName;\n }\n }\n if (result !== null)\n break;\n }\n return result;\n }\n eachChild(fn) {\n this.args.forEach(fn);\n }\n outputDefined() {\n return this.args.every(arg => arg.outputDefined());\n }\n}\n\nfunction isComparableType(op, type) {\n if (op === '==' || op === '!=') {\n // equality operator\n return type.kind === 'boolean' ||\n type.kind === 'string' ||\n type.kind === 'number' ||\n type.kind === 'null' ||\n type.kind === 'value';\n }\n else {\n // ordering operator\n return type.kind === 'string' ||\n type.kind === 'number' ||\n type.kind === 'value';\n }\n}\nfunction eq(ctx, a, b) { return a === b; }\nfunction neq(ctx, a, b) { return a !== b; }\nfunction lt(ctx, a, b) { return a < b; }\nfunction gt(ctx, a, b) { return a > b; }\nfunction lteq(ctx, a, b) { return a <= b; }\nfunction gteq(ctx, a, b) { return a >= b; }\nfunction eqCollate(ctx, a, b, c) { return c.compare(a, b) === 0; }\nfunction neqCollate(ctx, a, b, c) { return !eqCollate(ctx, a, b, c); }\nfunction ltCollate(ctx, a, b, c) { return c.compare(a, b) < 0; }\nfunction gtCollate(ctx, a, b, c) { return c.compare(a, b) > 0; }\nfunction lteqCollate(ctx, a, b, c) { return c.compare(a, b) <= 0; }\nfunction gteqCollate(ctx, a, b, c) { return c.compare(a, b) >= 0; }\n/**\n * Special form for comparison operators, implementing the signatures:\n * - (T, T, ?Collator) => boolean\n * - (T, value, ?Collator) => boolean\n * - (value, T, ?Collator) => boolean\n *\n * For inequalities, T must be either value, string, or number. For ==/!=, it\n * can also be boolean or null.\n *\n * Equality semantics are equivalent to Javascript's strict equality (===/!==)\n * -- i.e., when the arguments' types don't match, == evaluates to false, != to\n * true.\n *\n * When types don't match in an ordering comparison, a runtime error is thrown.\n *\n * @private\n */\nfunction makeComparison(op, compareBasic, compareWithCollator) {\n const isOrderComparison = op !== '==' && op !== '!=';\n return class Comparison {\n constructor(lhs, rhs, collator) {\n this.type = BooleanType;\n this.lhs = lhs;\n this.rhs = rhs;\n this.collator = collator;\n this.hasUntypedArgument = lhs.type.kind === 'value' || rhs.type.kind === 'value';\n }\n static parse(args, context) {\n if (args.length !== 3 && args.length !== 4)\n return context.error('Expected two or three arguments.');\n const op = args[0];\n let lhs = context.parse(args[1], 1, ValueType);\n if (!lhs)\n return null;\n if (!isComparableType(op, lhs.type)) {\n return context.concat(1).error(`\"${op}\" comparisons are not supported for type '${typeToString(lhs.type)}'.`);\n }\n let rhs = context.parse(args[2], 2, ValueType);\n if (!rhs)\n return null;\n if (!isComparableType(op, rhs.type)) {\n return context.concat(2).error(`\"${op}\" comparisons are not supported for type '${typeToString(rhs.type)}'.`);\n }\n if (lhs.type.kind !== rhs.type.kind &&\n lhs.type.kind !== 'value' &&\n rhs.type.kind !== 'value') {\n return context.error(`Cannot compare types '${typeToString(lhs.type)}' and '${typeToString(rhs.type)}'.`);\n }\n if (isOrderComparison) {\n // typing rules specific to less/greater than operators\n if (lhs.type.kind === 'value' && rhs.type.kind !== 'value') {\n // (value, T)\n lhs = new Assertion(rhs.type, [lhs]);\n }\n else if (lhs.type.kind !== 'value' && rhs.type.kind === 'value') {\n // (T, value)\n rhs = new Assertion(lhs.type, [rhs]);\n }\n }\n let collator = null;\n if (args.length === 4) {\n if (lhs.type.kind !== 'string' &&\n rhs.type.kind !== 'string' &&\n lhs.type.kind !== 'value' &&\n rhs.type.kind !== 'value') {\n return context.error('Cannot use collator to compare non-string types.');\n }\n collator = context.parse(args[3], 3, CollatorType);\n if (!collator)\n return null;\n }\n return new Comparison(lhs, rhs, collator);\n }\n evaluate(ctx) {\n const lhs = this.lhs.evaluate(ctx);\n const rhs = this.rhs.evaluate(ctx);\n if (isOrderComparison && this.hasUntypedArgument) {\n const lt = typeOf(lhs);\n const rt = typeOf(rhs);\n // check that type is string or number, and equal\n if (lt.kind !== rt.kind || !(lt.kind === 'string' || lt.kind === 'number')) {\n throw new RuntimeError(`Expected arguments for \"${op}\" to be (string, string) or (number, number), but found (${lt.kind}, ${rt.kind}) instead.`);\n }\n }\n if (this.collator && !isOrderComparison && this.hasUntypedArgument) {\n const lt = typeOf(lhs);\n const rt = typeOf(rhs);\n if (lt.kind !== 'string' || rt.kind !== 'string') {\n return compareBasic(ctx, lhs, rhs);\n }\n }\n return this.collator ?\n compareWithCollator(ctx, lhs, rhs, this.collator.evaluate(ctx)) :\n compareBasic(ctx, lhs, rhs);\n }\n eachChild(fn) {\n fn(this.lhs);\n fn(this.rhs);\n if (this.collator) {\n fn(this.collator);\n }\n }\n outputDefined() {\n return true;\n }\n };\n}\nconst Equals = makeComparison('==', eq, eqCollate);\nconst NotEquals = makeComparison('!=', neq, neqCollate);\nconst LessThan = makeComparison('<', lt, ltCollate);\nconst GreaterThan = makeComparison('>', gt, gtCollate);\nconst LessThanOrEqual = makeComparison('<=', lteq, lteqCollate);\nconst GreaterThanOrEqual = makeComparison('>=', gteq, gteqCollate);\n\nclass CollatorExpression {\n constructor(caseSensitive, diacriticSensitive, locale) {\n this.type = CollatorType;\n this.locale = locale;\n this.caseSensitive = caseSensitive;\n this.diacriticSensitive = diacriticSensitive;\n }\n static parse(args, context) {\n if (args.length !== 2)\n return context.error('Expected one argument.');\n const options = args[1];\n if (typeof options !== 'object' || Array.isArray(options))\n return context.error('Collator options argument must be an object.');\n const caseSensitive = context.parse(options['case-sensitive'] === undefined ? false : options['case-sensitive'], 1, BooleanType);\n if (!caseSensitive)\n return null;\n const diacriticSensitive = context.parse(options['diacritic-sensitive'] === undefined ? false : options['diacritic-sensitive'], 1, BooleanType);\n if (!diacriticSensitive)\n return null;\n let locale = null;\n if (options['locale']) {\n locale = context.parse(options['locale'], 1, StringType);\n if (!locale)\n return null;\n }\n return new CollatorExpression(caseSensitive, diacriticSensitive, locale);\n }\n evaluate(ctx) {\n return new Collator(this.caseSensitive.evaluate(ctx), this.diacriticSensitive.evaluate(ctx), this.locale ? this.locale.evaluate(ctx) : null);\n }\n eachChild(fn) {\n fn(this.caseSensitive);\n fn(this.diacriticSensitive);\n if (this.locale) {\n fn(this.locale);\n }\n }\n outputDefined() {\n // Technically the set of possible outputs is the combinatoric set of Collators produced\n // by all possible outputs of locale/caseSensitive/diacriticSensitive\n // But for the primary use of Collators in comparison operators, we ignore the Collator's\n // possible outputs anyway, so we can get away with leaving this false for now.\n return false;\n }\n}\n\nclass NumberFormat {\n constructor(number, locale, currency, minFractionDigits, maxFractionDigits) {\n this.type = StringType;\n this.number = number;\n this.locale = locale;\n this.currency = currency;\n this.minFractionDigits = minFractionDigits;\n this.maxFractionDigits = maxFractionDigits;\n }\n static parse(args, context) {\n if (args.length !== 3)\n return context.error('Expected two arguments.');\n const number = context.parse(args[1], 1, NumberType);\n if (!number)\n return null;\n const options = args[2];\n if (typeof options !== 'object' || Array.isArray(options))\n return context.error('NumberFormat options argument must be an object.');\n let locale = null;\n if (options['locale']) {\n locale = context.parse(options['locale'], 1, StringType);\n if (!locale)\n return null;\n }\n let currency = null;\n if (options['currency']) {\n currency = context.parse(options['currency'], 1, StringType);\n if (!currency)\n return null;\n }\n let minFractionDigits = null;\n if (options['min-fraction-digits']) {\n minFractionDigits = context.parse(options['min-fraction-digits'], 1, NumberType);\n if (!minFractionDigits)\n return null;\n }\n let maxFractionDigits = null;\n if (options['max-fraction-digits']) {\n maxFractionDigits = context.parse(options['max-fraction-digits'], 1, NumberType);\n if (!maxFractionDigits)\n return null;\n }\n return new NumberFormat(number, locale, currency, minFractionDigits, maxFractionDigits);\n }\n evaluate(ctx) {\n return new Intl.NumberFormat(this.locale ? this.locale.evaluate(ctx) : [], {\n style: this.currency ? 'currency' : 'decimal',\n currency: this.currency ? this.currency.evaluate(ctx) : undefined,\n minimumFractionDigits: this.minFractionDigits ? this.minFractionDigits.evaluate(ctx) : undefined,\n maximumFractionDigits: this.maxFractionDigits ? this.maxFractionDigits.evaluate(ctx) : undefined,\n }).format(this.number.evaluate(ctx));\n }\n eachChild(fn) {\n fn(this.number);\n if (this.locale) {\n fn(this.locale);\n }\n if (this.currency) {\n fn(this.currency);\n }\n if (this.minFractionDigits) {\n fn(this.minFractionDigits);\n }\n if (this.maxFractionDigits) {\n fn(this.maxFractionDigits);\n }\n }\n outputDefined() {\n return false;\n }\n}\n\nclass FormatExpression {\n constructor(sections) {\n this.type = FormattedType;\n this.sections = sections;\n }\n static parse(args, context) {\n if (args.length < 2) {\n return context.error('Expected at least one argument.');\n }\n const firstArg = args[1];\n if (!Array.isArray(firstArg) && typeof firstArg === 'object') {\n return context.error('First argument must be an image or text section.');\n }\n const sections = [];\n let nextTokenMayBeObject = false;\n for (let i = 1; i <= args.length - 1; ++i) {\n const arg = args[i];\n if (nextTokenMayBeObject && typeof arg === 'object' && !Array.isArray(arg)) {\n nextTokenMayBeObject = false;\n let scale = null;\n if (arg['font-scale']) {\n scale = context.parse(arg['font-scale'], 1, NumberType);\n if (!scale)\n return null;\n }\n let font = null;\n if (arg['text-font']) {\n font = context.parse(arg['text-font'], 1, array(StringType));\n if (!font)\n return null;\n }\n let textColor = null;\n if (arg['text-color']) {\n textColor = context.parse(arg['text-color'], 1, ColorType);\n if (!textColor)\n return null;\n }\n const lastExpression = sections[sections.length - 1];\n lastExpression.scale = scale;\n lastExpression.font = font;\n lastExpression.textColor = textColor;\n }\n else {\n const content = context.parse(args[i], 1, ValueType);\n if (!content)\n return null;\n const kind = content.type.kind;\n if (kind !== 'string' && kind !== 'value' && kind !== 'null' && kind !== 'resolvedImage')\n return context.error('Formatted text type must be \\'string\\', \\'value\\', \\'image\\' or \\'null\\'.');\n nextTokenMayBeObject = true;\n sections.push({ content, scale: null, font: null, textColor: null });\n }\n }\n return new FormatExpression(sections);\n }\n evaluate(ctx) {\n const evaluateSection = section => {\n const evaluatedContent = section.content.evaluate(ctx);\n if (typeOf(evaluatedContent) === ResolvedImageType) {\n return new FormattedSection('', evaluatedContent, null, null, null);\n }\n return new FormattedSection(valueToString(evaluatedContent), null, section.scale ? section.scale.evaluate(ctx) : null, section.font ? section.font.evaluate(ctx).join(',') : null, section.textColor ? section.textColor.evaluate(ctx) : null);\n };\n return new Formatted(this.sections.map(evaluateSection));\n }\n eachChild(fn) {\n for (const section of this.sections) {\n fn(section.content);\n if (section.scale) {\n fn(section.scale);\n }\n if (section.font) {\n fn(section.font);\n }\n if (section.textColor) {\n fn(section.textColor);\n }\n }\n }\n outputDefined() {\n // Technically the combinatoric set of all children\n // Usually, this.text will be undefined anyway\n return false;\n }\n}\n\nclass ImageExpression {\n constructor(input) {\n this.type = ResolvedImageType;\n this.input = input;\n }\n static parse(args, context) {\n if (args.length !== 2) {\n return context.error('Expected two arguments.');\n }\n const name = context.parse(args[1], 1, StringType);\n if (!name)\n return context.error('No image name provided.');\n return new ImageExpression(name);\n }\n evaluate(ctx) {\n const evaluatedImageName = this.input.evaluate(ctx);\n const value = ResolvedImage.fromString(evaluatedImageName);\n if (value && ctx.availableImages)\n value.available = ctx.availableImages.indexOf(evaluatedImageName) > -1;\n return value;\n }\n eachChild(fn) {\n fn(this.input);\n }\n outputDefined() {\n // The output of image is determined by the list of available images in the evaluation context\n return false;\n }\n}\n\nclass Length {\n constructor(input) {\n this.type = NumberType;\n this.input = input;\n }\n static parse(args, context) {\n if (args.length !== 2)\n return context.error(`Expected 1 argument, but found ${args.length - 1} instead.`);\n const input = context.parse(args[1], 1);\n if (!input)\n return null;\n if (input.type.kind !== 'array' && input.type.kind !== 'string' && input.type.kind !== 'value')\n return context.error(`Expected argument of type string or array, but found ${typeToString(input.type)} instead.`);\n return new Length(input);\n }\n evaluate(ctx) {\n const input = this.input.evaluate(ctx);\n if (typeof input === 'string') {\n // The length may be affected by surrogate pairs.\n return [...input].length;\n }\n else if (Array.isArray(input)) {\n return input.length;\n }\n else {\n throw new RuntimeError(`Expected value to be of type string or array, but found ${typeToString(typeOf(input))} instead.`);\n }\n }\n eachChild(fn) {\n fn(this.input);\n }\n outputDefined() {\n return false;\n }\n}\n\nconst EXTENT = 8192;\nfunction getTileCoordinates(p, canonical) {\n const x = mercatorXfromLng(p[0]);\n const y = mercatorYfromLat(p[1]);\n const tilesAtZoom = Math.pow(2, canonical.z);\n return [Math.round(x * tilesAtZoom * EXTENT), Math.round(y * tilesAtZoom * EXTENT)];\n}\nfunction getLngLatFromTileCoord(coord, canonical) {\n const tilesAtZoom = Math.pow(2, canonical.z);\n const x = (coord[0] / EXTENT + canonical.x) / tilesAtZoom;\n const y = (coord[1] / EXTENT + canonical.y) / tilesAtZoom;\n return [lngFromMercatorXfromLng(x), latFromMercatorY(y)];\n}\nfunction mercatorXfromLng(lng) {\n return (180 + lng) / 360;\n}\nfunction lngFromMercatorXfromLng(mercatorX) {\n return mercatorX * 360 - 180;\n}\nfunction mercatorYfromLat(lat) {\n return (180 - (180 / Math.PI * Math.log(Math.tan(Math.PI / 4 + lat * Math.PI / 360)))) / 360;\n}\nfunction latFromMercatorY(mercatorY) {\n return 360 / Math.PI * Math.atan(Math.exp((180 - mercatorY * 360) * Math.PI / 180)) - 90;\n}\nfunction updateBBox(bbox, coord) {\n bbox[0] = Math.min(bbox[0], coord[0]);\n bbox[1] = Math.min(bbox[1], coord[1]);\n bbox[2] = Math.max(bbox[2], coord[0]);\n bbox[3] = Math.max(bbox[3], coord[1]);\n}\nfunction boxWithinBox(bbox1, bbox2) {\n if (bbox1[0] <= bbox2[0])\n return false;\n if (bbox1[2] >= bbox2[2])\n return false;\n if (bbox1[1] <= bbox2[1])\n return false;\n if (bbox1[3] >= bbox2[3])\n return false;\n return true;\n}\nfunction rayIntersect(p, p1, p2) {\n return ((p1[1] > p[1]) !== (p2[1] > p[1])) && (p[0] < (p2[0] - p1[0]) * (p[1] - p1[1]) / (p2[1] - p1[1]) + p1[0]);\n}\nfunction pointOnBoundary(p, p1, p2) {\n const x1 = p[0] - p1[0];\n const y1 = p[1] - p1[1];\n const x2 = p[0] - p2[0];\n const y2 = p[1] - p2[1];\n return (x1 * y2 - x2 * y1 === 0) && (x1 * x2 <= 0) && (y1 * y2 <= 0);\n}\n// a, b are end points for line segment1, c and d are end points for line segment2\nfunction segmentIntersectSegment(a, b, c, d) {\n // check if two segments are parallel or not\n // precondition is end point a, b is inside polygon, if line a->b is\n // parallel to polygon edge c->d, then a->b won't intersect with c->d\n const vectorP = [b[0] - a[0], b[1] - a[1]];\n const vectorQ = [d[0] - c[0], d[1] - c[1]];\n if (perp(vectorQ, vectorP) === 0)\n return false;\n // If lines are intersecting with each other, the relative location should be:\n // a and b lie in different sides of segment c->d\n // c and d lie in different sides of segment a->b\n if (twoSided(a, b, c, d) && twoSided(c, d, a, b))\n return true;\n return false;\n}\nfunction lineIntersectPolygon(p1, p2, polygon) {\n for (const ring of polygon) {\n // loop through every edge of the ring\n for (let j = 0; j < ring.length - 1; ++j) {\n if (segmentIntersectSegment(p1, p2, ring[j], ring[j + 1])) {\n return true;\n }\n }\n }\n return false;\n}\n// ray casting algorithm for detecting if point is in polygon\nfunction pointWithinPolygon(point, rings, trueIfOnBoundary = false) {\n let inside = false;\n for (const ring of rings) {\n for (let j = 0; j < ring.length - 1; j++) {\n if (pointOnBoundary(point, ring[j], ring[j + 1]))\n return trueIfOnBoundary;\n if (rayIntersect(point, ring[j], ring[j + 1]))\n inside = !inside;\n }\n }\n return inside;\n}\nfunction pointWithinPolygons(point, polygons) {\n for (const polygon of polygons) {\n if (pointWithinPolygon(point, polygon))\n return true;\n }\n return false;\n}\nfunction lineStringWithinPolygon(line, polygon) {\n // First, check if geometry points of line segments are all inside polygon\n for (const point of line) {\n if (!pointWithinPolygon(point, polygon)) {\n return false;\n }\n }\n // Second, check if there is line segment intersecting polygon edge\n for (let i = 0; i < line.length - 1; ++i) {\n if (lineIntersectPolygon(line[i], line[i + 1], polygon)) {\n return false;\n }\n }\n return true;\n}\nfunction lineStringWithinPolygons(line, polygons) {\n for (const polygon of polygons) {\n if (lineStringWithinPolygon(line, polygon))\n return true;\n }\n return false;\n}\nfunction perp(v1, v2) {\n return (v1[0] * v2[1] - v1[1] * v2[0]);\n}\n// check if p1 and p2 are in different sides of line segment q1->q2\nfunction twoSided(p1, p2, q1, q2) {\n // q1->p1 (x1, y1), q1->p2 (x2, y2), q1->q2 (x3, y3)\n const x1 = p1[0] - q1[0];\n const y1 = p1[1] - q1[1];\n const x2 = p2[0] - q1[0];\n const y2 = p2[1] - q1[1];\n const x3 = q2[0] - q1[0];\n const y3 = q2[1] - q1[1];\n const det1 = (x1 * y3 - x3 * y1);\n const det2 = (x2 * y3 - x3 * y2);\n if ((det1 > 0 && det2 < 0) || (det1 < 0 && det2 > 0))\n return true;\n return false;\n}\n\nfunction getTilePolygon(coordinates, bbox, canonical) {\n const polygon = [];\n for (let i = 0; i < coordinates.length; i++) {\n const ring = [];\n for (let j = 0; j < coordinates[i].length; j++) {\n const coord = getTileCoordinates(coordinates[i][j], canonical);\n updateBBox(bbox, coord);\n ring.push(coord);\n }\n polygon.push(ring);\n }\n return polygon;\n}\nfunction getTilePolygons(coordinates, bbox, canonical) {\n const polygons = [];\n for (let i = 0; i < coordinates.length; i++) {\n const polygon = getTilePolygon(coordinates[i], bbox, canonical);\n polygons.push(polygon);\n }\n return polygons;\n}\nfunction updatePoint(p, bbox, polyBBox, worldSize) {\n if (p[0] < polyBBox[0] || p[0] > polyBBox[2]) {\n const halfWorldSize = worldSize * 0.5;\n let shift = (p[0] - polyBBox[0] > halfWorldSize) ? -worldSize : (polyBBox[0] - p[0] > halfWorldSize) ? worldSize : 0;\n if (shift === 0) {\n shift = (p[0] - polyBBox[2] > halfWorldSize) ? -worldSize : (polyBBox[2] - p[0] > halfWorldSize) ? worldSize : 0;\n }\n p[0] += shift;\n }\n updateBBox(bbox, p);\n}\nfunction resetBBox(bbox) {\n bbox[0] = bbox[1] = Infinity;\n bbox[2] = bbox[3] = -Infinity;\n}\nfunction getTilePoints(geometry, pointBBox, polyBBox, canonical) {\n const worldSize = Math.pow(2, canonical.z) * EXTENT;\n const shifts = [canonical.x * EXTENT, canonical.y * EXTENT];\n const tilePoints = [];\n for (const points of geometry) {\n for (const point of points) {\n const p = [point.x + shifts[0], point.y + shifts[1]];\n updatePoint(p, pointBBox, polyBBox, worldSize);\n tilePoints.push(p);\n }\n }\n return tilePoints;\n}\nfunction getTileLines(geometry, lineBBox, polyBBox, canonical) {\n const worldSize = Math.pow(2, canonical.z) * EXTENT;\n const shifts = [canonical.x * EXTENT, canonical.y * EXTENT];\n const tileLines = [];\n for (const line of geometry) {\n const tileLine = [];\n for (const point of line) {\n const p = [point.x + shifts[0], point.y + shifts[1]];\n updateBBox(lineBBox, p);\n tileLine.push(p);\n }\n tileLines.push(tileLine);\n }\n if (lineBBox[2] - lineBBox[0] <= worldSize / 2) {\n resetBBox(lineBBox);\n for (const line of tileLines) {\n for (const p of line) {\n updatePoint(p, lineBBox, polyBBox, worldSize);\n }\n }\n }\n return tileLines;\n}\nfunction pointsWithinPolygons(ctx, polygonGeometry) {\n const pointBBox = [Infinity, Infinity, -Infinity, -Infinity];\n const polyBBox = [Infinity, Infinity, -Infinity, -Infinity];\n const canonical = ctx.canonicalID();\n if (polygonGeometry.type === 'Polygon') {\n const tilePolygon = getTilePolygon(polygonGeometry.coordinates, polyBBox, canonical);\n const tilePoints = getTilePoints(ctx.geometry(), pointBBox, polyBBox, canonical);\n if (!boxWithinBox(pointBBox, polyBBox))\n return false;\n for (const point of tilePoints) {\n if (!pointWithinPolygon(point, tilePolygon))\n return false;\n }\n }\n if (polygonGeometry.type === 'MultiPolygon') {\n const tilePolygons = getTilePolygons(polygonGeometry.coordinates, polyBBox, canonical);\n const tilePoints = getTilePoints(ctx.geometry(), pointBBox, polyBBox, canonical);\n if (!boxWithinBox(pointBBox, polyBBox))\n return false;\n for (const point of tilePoints) {\n if (!pointWithinPolygons(point, tilePolygons))\n return false;\n }\n }\n return true;\n}\nfunction linesWithinPolygons(ctx, polygonGeometry) {\n const lineBBox = [Infinity, Infinity, -Infinity, -Infinity];\n const polyBBox = [Infinity, Infinity, -Infinity, -Infinity];\n const canonical = ctx.canonicalID();\n if (polygonGeometry.type === 'Polygon') {\n const tilePolygon = getTilePolygon(polygonGeometry.coordinates, polyBBox, canonical);\n const tileLines = getTileLines(ctx.geometry(), lineBBox, polyBBox, canonical);\n if (!boxWithinBox(lineBBox, polyBBox))\n return false;\n for (const line of tileLines) {\n if (!lineStringWithinPolygon(line, tilePolygon))\n return false;\n }\n }\n if (polygonGeometry.type === 'MultiPolygon') {\n const tilePolygons = getTilePolygons(polygonGeometry.coordinates, polyBBox, canonical);\n const tileLines = getTileLines(ctx.geometry(), lineBBox, polyBBox, canonical);\n if (!boxWithinBox(lineBBox, polyBBox))\n return false;\n for (const line of tileLines) {\n if (!lineStringWithinPolygons(line, tilePolygons))\n return false;\n }\n }\n return true;\n}\nclass Within {\n constructor(geojson, geometries) {\n this.type = BooleanType;\n this.geojson = geojson;\n this.geometries = geometries;\n }\n static parse(args, context) {\n if (args.length !== 2)\n return context.error(`'within' expression requires exactly one argument, but found ${args.length - 1} instead.`);\n if (isValue(args[1])) {\n const geojson = args[1];\n if (geojson.type === 'FeatureCollection') {\n const polygonsCoords = [];\n for (const polygon of geojson.features) {\n const { type, coordinates } = polygon.geometry;\n if (type === 'Polygon') {\n polygonsCoords.push(coordinates);\n }\n if (type === 'MultiPolygon') {\n polygonsCoords.push(...coordinates);\n }\n }\n if (polygonsCoords.length) {\n const multipolygonWrapper = {\n type: 'MultiPolygon',\n coordinates: polygonsCoords\n };\n return new Within(geojson, multipolygonWrapper);\n }\n }\n else if (geojson.type === 'Feature') {\n const type = geojson.geometry.type;\n if (type === 'Polygon' || type === 'MultiPolygon') {\n return new Within(geojson, geojson.geometry);\n }\n }\n else if (geojson.type === 'Polygon' || geojson.type === 'MultiPolygon') {\n return new Within(geojson, geojson);\n }\n }\n return context.error('\\'within\\' expression requires valid geojson object that contains polygon geometry type.');\n }\n evaluate(ctx) {\n if (ctx.geometry() != null && ctx.canonicalID() != null) {\n if (ctx.geometryDollarType() === 'Point') {\n return pointsWithinPolygons(ctx, this.geometries);\n }\n else if (ctx.geometryDollarType() === 'LineString') {\n return linesWithinPolygons(ctx, this.geometries);\n }\n }\n return false;\n }\n eachChild() { }\n outputDefined() {\n return true;\n }\n}\n\nclass TinyQueue {\n constructor(data = [], compare = (a, b) => (a < b ? -1 : a > b ? 1 : 0)) {\n this.data = data;\n this.length = this.data.length;\n this.compare = compare;\n\n if (this.length > 0) {\n for (let i = (this.length >> 1) - 1; i >= 0; i--) this._down(i);\n }\n }\n\n push(item) {\n this.data.push(item);\n this._up(this.length++);\n }\n\n pop() {\n if (this.length === 0) return undefined;\n\n const top = this.data[0];\n const bottom = this.data.pop();\n\n if (--this.length > 0) {\n this.data[0] = bottom;\n this._down(0);\n }\n\n return top;\n }\n\n peek() {\n return this.data[0];\n }\n\n _up(pos) {\n const {data, compare} = this;\n const item = data[pos];\n\n while (pos > 0) {\n const parent = (pos - 1) >> 1;\n const current = data[parent];\n if (compare(item, current) >= 0) break;\n data[pos] = current;\n pos = parent;\n }\n\n data[pos] = item;\n }\n\n _down(pos) {\n const {data, compare} = this;\n const halfLength = this.length >> 1;\n const item = data[pos];\n\n while (pos < halfLength) {\n let bestChild = (pos << 1) + 1; // initially it is the left child\n const right = bestChild + 1;\n\n if (right < this.length && compare(data[right], data[bestChild]) < 0) {\n bestChild = right;\n }\n if (compare(data[bestChild], item) >= 0) break;\n\n data[pos] = data[bestChild];\n pos = bestChild;\n }\n\n data[pos] = item;\n }\n}\n\n// This is taken from https://github.com/mapbox/cheap-ruler/ in order to take only the relevant parts\n// Values that define WGS84 ellipsoid model of the Earth\nconst RE = 6378.137; // equatorial radius\nconst FE = 1 / 298.257223563; // flattening\nconst E2 = FE * (2 - FE);\nconst RAD = Math.PI / 180;\nclass CheapRuler {\n constructor(lat) {\n // Curvature formulas from https://en.wikipedia.org/wiki/Earth_radius#Meridional\n const m = RAD * RE * 1000;\n const coslat = Math.cos(lat * RAD);\n const w2 = 1 / (1 - E2 * (1 - coslat * coslat));\n const w = Math.sqrt(w2);\n // multipliers for converting longitude and latitude degrees into distance\n this.kx = m * w * coslat; // based on normal radius of curvature\n this.ky = m * w * w2 * (1 - E2); // based on meridional radius of curvature\n }\n /**\n * Given two points of the form [longitude, latitude], returns the distance.\n *\n * @param a - point [longitude, latitude]\n * @param b - point [longitude, latitude]\n * @returns distance\n * @example\n * const distance = ruler.distance([30.5, 50.5], [30.51, 50.49]);\n * //=distance\n */\n distance(a, b) {\n const dx = this.wrap(a[0] - b[0]) * this.kx;\n const dy = (a[1] - b[1]) * this.ky;\n return Math.sqrt(dx * dx + dy * dy);\n }\n /**\n * Returns an object of the form {point, index, t}, where point is closest point on the line\n * from the given point, index is the start index of the segment with the closest point,\n * and t is a parameter from 0 to 1 that indicates where the closest point is on that segment.\n *\n * @param line - an array of points that form the line\n * @param p - point [longitude, latitude]\n * @returns the nearest point, its index in the array and the proportion along the line\n * @example\n * const point = ruler.pointOnLine(line, [-67.04, 50.5]).point;\n * //=point\n */\n pointOnLine(line, p) {\n let minDist = Infinity;\n let minX, minY, minI, minT;\n for (let i = 0; i < line.length - 1; i++) {\n let x = line[i][0];\n let y = line[i][1];\n let dx = this.wrap(line[i + 1][0] - x) * this.kx;\n let dy = (line[i + 1][1] - y) * this.ky;\n let t = 0;\n if (dx !== 0 || dy !== 0) {\n t = (this.wrap(p[0] - x) * this.kx * dx + (p[1] - y) * this.ky * dy) / (dx * dx + dy * dy);\n if (t > 1) {\n x = line[i + 1][0];\n y = line[i + 1][1];\n }\n else if (t > 0) {\n x += (dx / this.kx) * t;\n y += (dy / this.ky) * t;\n }\n }\n dx = this.wrap(p[0] - x) * this.kx;\n dy = (p[1] - y) * this.ky;\n const sqDist = dx * dx + dy * dy;\n if (sqDist < minDist) {\n minDist = sqDist;\n minX = x;\n minY = y;\n minI = i;\n minT = t;\n }\n }\n return {\n point: [minX, minY],\n index: minI,\n t: Math.max(0, Math.min(1, minT))\n };\n }\n wrap(deg) {\n while (deg < -180)\n deg += 360;\n while (deg > 180)\n deg -= 360;\n return deg;\n }\n}\n\nconst MinPointsSize = 100;\nconst MinLinePointsSize = 50;\nfunction compareDistPair(a, b) {\n return b[0] - a[0];\n}\nfunction getRangeSize(range) {\n return range[1] - range[0] + 1;\n}\nfunction isRangeSafe(range, threshold) {\n return range[1] >= range[0] && range[1] < threshold;\n}\nfunction splitRange(range, isLine) {\n if (range[0] > range[1]) {\n return [null, null];\n }\n const size = getRangeSize(range);\n if (isLine) {\n if (size === 2) {\n return [range, null];\n }\n const size1 = Math.floor(size / 2);\n return [[range[0], range[0] + size1],\n [range[0] + size1, range[1]]];\n }\n if (size === 1) {\n return [range, null];\n }\n const size1 = Math.floor(size / 2) - 1;\n return [[range[0], range[0] + size1],\n [range[0] + size1 + 1, range[1]]];\n}\nfunction getBBox(coords, range) {\n if (!isRangeSafe(range, coords.length)) {\n return [Infinity, Infinity, -Infinity, -Infinity];\n }\n const bbox = [Infinity, Infinity, -Infinity, -Infinity];\n for (let i = range[0]; i <= range[1]; ++i) {\n updateBBox(bbox, coords[i]);\n }\n return bbox;\n}\nfunction getPolygonBBox(polygon) {\n const bbox = [Infinity, Infinity, -Infinity, -Infinity];\n for (const ring of polygon) {\n for (const coord of ring) {\n updateBBox(bbox, coord);\n }\n }\n return bbox;\n}\nfunction isValidBBox(bbox) {\n return bbox[0] !== -Infinity && bbox[1] !== -Infinity && bbox[2] !== Infinity && bbox[3] !== Infinity;\n}\n// Calculate the distance between two bounding boxes.\n// Calculate the delta in x and y direction, and use two fake points {0.0, 0.0}\n// and {dx, dy} to calculate the distance. Distance will be 0.0 if bounding box are overlapping.\nfunction bboxToBBoxDistance(bbox1, bbox2, ruler) {\n if (!isValidBBox(bbox1) || !isValidBBox(bbox2)) {\n return NaN;\n }\n let dx = 0.0;\n let dy = 0.0;\n // bbox1 in left side\n if (bbox1[2] < bbox2[0]) {\n dx = bbox2[0] - bbox1[2];\n }\n // bbox1 in right side\n if (bbox1[0] > bbox2[2]) {\n dx = bbox1[0] - bbox2[2];\n }\n // bbox1 in above side\n if (bbox1[1] > bbox2[3]) {\n dy = bbox1[1] - bbox2[3];\n }\n // bbox1 in down side\n if (bbox1[3] < bbox2[1]) {\n dy = bbox2[1] - bbox1[3];\n }\n return ruler.distance([0.0, 0.0], [dx, dy]);\n}\nfunction pointToLineDistance(point, line, ruler) {\n const nearestPoint = ruler.pointOnLine(line, point);\n return ruler.distance(point, nearestPoint.point);\n}\nfunction segmentToSegmentDistance(p1, p2, q1, q2, ruler) {\n const dist1 = Math.min(pointToLineDistance(p1, [q1, q2], ruler), pointToLineDistance(p2, [q1, q2], ruler));\n const dist2 = Math.min(pointToLineDistance(q1, [p1, p2], ruler), pointToLineDistance(q2, [p1, p2], ruler));\n return Math.min(dist1, dist2);\n}\nfunction lineToLineDistance(line1, range1, line2, range2, ruler) {\n const rangeSafe = isRangeSafe(range1, line1.length) && isRangeSafe(range2, line2.length);\n if (!rangeSafe) {\n return Infinity;\n }\n let dist = Infinity;\n for (let i = range1[0]; i < range1[1]; ++i) {\n const p1 = line1[i];\n const p2 = line1[i + 1];\n for (let j = range2[0]; j < range2[1]; ++j) {\n const q1 = line2[j];\n const q2 = line2[j + 1];\n if (segmentIntersectSegment(p1, p2, q1, q2)) {\n return 0.0;\n }\n dist = Math.min(dist, segmentToSegmentDistance(p1, p2, q1, q2, ruler));\n }\n }\n return dist;\n}\nfunction pointsToPointsDistance(points1, range1, points2, range2, ruler) {\n const rangeSafe = isRangeSafe(range1, points1.length) && isRangeSafe(range2, points2.length);\n if (!rangeSafe) {\n return NaN;\n }\n let dist = Infinity;\n for (let i = range1[0]; i <= range1[1]; ++i) {\n for (let j = range2[0]; j <= range2[1]; ++j) {\n dist = Math.min(dist, ruler.distance(points1[i], points2[j]));\n if (dist === 0.0) {\n return dist;\n }\n }\n }\n return dist;\n}\nfunction pointToPolygonDistance(point, polygon, ruler) {\n if (pointWithinPolygon(point, polygon, true)) {\n return 0.0;\n }\n let dist = Infinity;\n for (const ring of polygon) {\n const front = ring[0];\n const back = ring[ring.length - 1];\n if (front !== back) {\n dist = Math.min(dist, pointToLineDistance(point, [back, front], ruler));\n if (dist === 0.0) {\n return dist;\n }\n }\n const nearestPoint = ruler.pointOnLine(ring, point);\n dist = Math.min(dist, ruler.distance(point, nearestPoint.point));\n if (dist === 0.0) {\n return dist;\n }\n }\n return dist;\n}\nfunction lineToPolygonDistance(line, range, polygon, ruler) {\n if (!isRangeSafe(range, line.length)) {\n return NaN;\n }\n for (let i = range[0]; i <= range[1]; ++i) {\n if (pointWithinPolygon(line[i], polygon, true)) {\n return 0.0;\n }\n }\n let dist = Infinity;\n for (let i = range[0]; i < range[1]; ++i) {\n const p1 = line[i];\n const p2 = line[i + 1];\n for (const ring of polygon) {\n for (let j = 0, len = ring.length, k = len - 1; j < len; k = j++) {\n const q1 = ring[k];\n const q2 = ring[j];\n if (segmentIntersectSegment(p1, p2, q1, q2)) {\n return 0.0;\n }\n dist = Math.min(dist, segmentToSegmentDistance(p1, p2, q1, q2, ruler));\n }\n }\n }\n return dist;\n}\nfunction polygonIntersect(poly1, poly2) {\n for (const ring of poly1) {\n for (const point of ring) {\n if (pointWithinPolygon(point, poly2, true)) {\n return true;\n }\n }\n }\n return false;\n}\nfunction polygonToPolygonDistance(polygon1, polygon2, ruler, currentMiniDist = Infinity) {\n const bbox1 = getPolygonBBox(polygon1);\n const bbox2 = getPolygonBBox(polygon2);\n if (currentMiniDist !== Infinity && bboxToBBoxDistance(bbox1, bbox2, ruler) >= currentMiniDist) {\n return currentMiniDist;\n }\n if (boxWithinBox(bbox1, bbox2)) {\n if (polygonIntersect(polygon1, polygon2)) {\n return 0.0;\n }\n }\n else if (polygonIntersect(polygon2, polygon1)) {\n return 0.0;\n }\n let dist = Infinity;\n for (const ring1 of polygon1) {\n for (let i = 0, len1 = ring1.length, l = len1 - 1; i < len1; l = i++) {\n const p1 = ring1[l];\n const p2 = ring1[i];\n for (const ring2 of polygon2) {\n for (let j = 0, len2 = ring2.length, k = len2 - 1; j < len2; k = j++) {\n const q1 = ring2[k];\n const q2 = ring2[j];\n if (segmentIntersectSegment(p1, p2, q1, q2)) {\n return 0.0;\n }\n dist = Math.min(dist, segmentToSegmentDistance(p1, p2, q1, q2, ruler));\n }\n }\n }\n }\n return dist;\n}\nfunction updateQueue(distQueue, miniDist, ruler, points, polyBBox, rangeA) {\n if (!rangeA) {\n return;\n }\n const tempDist = bboxToBBoxDistance(getBBox(points, rangeA), polyBBox, ruler);\n // Insert new pair to the queue if the bbox distance is less than\n // miniDist, The pair with biggest distance will be at the top\n if (tempDist < miniDist) {\n distQueue.push([tempDist, rangeA, [0, 0]]);\n }\n}\nfunction updateQueueTwoSets(distQueue, miniDist, ruler, pointSet1, pointSet2, range1, range2) {\n if (!range1 || !range2) {\n return;\n }\n const tempDist = bboxToBBoxDistance(getBBox(pointSet1, range1), getBBox(pointSet2, range2), ruler);\n // Insert new pair to the queue if the bbox distance is less than\n // miniDist, The pair with biggest distance will be at the top\n if (tempDist < miniDist) {\n distQueue.push([tempDist, range1, range2]);\n }\n}\n// Divide and conquer, the time complexity is O(n*lgn), faster than Brute force\n// O(n*n) Most of the time, use index for in-place processing.\nfunction pointsToPolygonDistance(points, isLine, polygon, ruler, currentMiniDist = Infinity) {\n let miniDist = Math.min(ruler.distance(points[0], polygon[0][0]), currentMiniDist);\n if (miniDist === 0.0) {\n return miniDist;\n }\n const distQueue = new TinyQueue([[0, [0, points.length - 1], [0, 0]]], compareDistPair);\n const polyBBox = getPolygonBBox(polygon);\n while (distQueue.length > 0) {\n const distPair = distQueue.pop();\n if (distPair[0] >= miniDist) {\n continue;\n }\n const range = distPair[1];\n // In case the set size are relatively small, we could use brute-force directly\n const threshold = isLine ? MinLinePointsSize : MinPointsSize;\n if (getRangeSize(range) <= threshold) {\n if (!isRangeSafe(range, points.length)) {\n return NaN;\n }\n if (isLine) {\n const tempDist = lineToPolygonDistance(points, range, polygon, ruler);\n if (isNaN(tempDist) || tempDist === 0.0) {\n return tempDist;\n }\n miniDist = Math.min(miniDist, tempDist);\n }\n else {\n for (let i = range[0]; i <= range[1]; ++i) {\n const tempDist = pointToPolygonDistance(points[i], polygon, ruler);\n miniDist = Math.min(miniDist, tempDist);\n if (miniDist === 0.0) {\n return 0.0;\n }\n }\n }\n }\n else {\n const newRangesA = splitRange(range, isLine);\n updateQueue(distQueue, miniDist, ruler, points, polyBBox, newRangesA[0]);\n updateQueue(distQueue, miniDist, ruler, points, polyBBox, newRangesA[1]);\n }\n }\n return miniDist;\n}\nfunction pointSetToPointSetDistance(pointSet1, isLine1, pointSet2, isLine2, ruler, currentMiniDist = Infinity) {\n let miniDist = Math.min(currentMiniDist, ruler.distance(pointSet1[0], pointSet2[0]));\n if (miniDist === 0.0) {\n return miniDist;\n }\n const distQueue = new TinyQueue([[0, [0, pointSet1.length - 1], [0, pointSet2.length - 1]]], compareDistPair);\n while (distQueue.length > 0) {\n const distPair = distQueue.pop();\n if (distPair[0] >= miniDist) {\n continue;\n }\n const rangeA = distPair[1];\n const rangeB = distPair[2];\n const threshold1 = isLine1 ? MinLinePointsSize : MinPointsSize;\n const threshold2 = isLine2 ? MinLinePointsSize : MinPointsSize;\n // In case the set size are relatively small, we could use brute-force directly\n if (getRangeSize(rangeA) <= threshold1 && getRangeSize(rangeB) <= threshold2) {\n if (!isRangeSafe(rangeA, pointSet1.length) && isRangeSafe(rangeB, pointSet2.length)) {\n return NaN;\n }\n let tempDist;\n if (isLine1 && isLine2) {\n tempDist = lineToLineDistance(pointSet1, rangeA, pointSet2, rangeB, ruler);\n miniDist = Math.min(miniDist, tempDist);\n }\n else if (isLine1 && !isLine2) {\n const sublibe = pointSet1.slice(rangeA[0], rangeA[1] + 1);\n for (let i = rangeB[0]; i <= rangeB[1]; ++i) {\n tempDist = pointToLineDistance(pointSet2[i], sublibe, ruler);\n miniDist = Math.min(miniDist, tempDist);\n if (miniDist === 0.0) {\n return miniDist;\n }\n }\n }\n else if (!isLine1 && isLine2) {\n const sublibe = pointSet2.slice(rangeB[0], rangeB[1] + 1);\n for (let i = rangeA[0]; i <= rangeA[1]; ++i) {\n tempDist = pointToLineDistance(pointSet1[i], sublibe, ruler);\n miniDist = Math.min(miniDist, tempDist);\n if (miniDist === 0.0) {\n return miniDist;\n }\n }\n }\n else {\n tempDist = pointsToPointsDistance(pointSet1, rangeA, pointSet2, rangeB, ruler);\n miniDist = Math.min(miniDist, tempDist);\n }\n }\n else {\n const newRangesA = splitRange(rangeA, isLine1);\n const newRangesB = splitRange(rangeB, isLine2);\n updateQueueTwoSets(distQueue, miniDist, ruler, pointSet1, pointSet2, newRangesA[0], newRangesB[0]);\n updateQueueTwoSets(distQueue, miniDist, ruler, pointSet1, pointSet2, newRangesA[0], newRangesB[1]);\n updateQueueTwoSets(distQueue, miniDist, ruler, pointSet1, pointSet2, newRangesA[1], newRangesB[0]);\n updateQueueTwoSets(distQueue, miniDist, ruler, pointSet1, pointSet2, newRangesA[1], newRangesB[1]);\n }\n }\n return miniDist;\n}\nfunction pointToGeometryDistance(ctx, geometries) {\n const tilePoints = ctx.geometry();\n const pointPosition = tilePoints.flat().map(p => getLngLatFromTileCoord([p.x, p.y], ctx.canonical));\n if (tilePoints.length === 0) {\n return NaN;\n }\n const ruler = new CheapRuler(pointPosition[0][1]);\n let dist = Infinity;\n for (const geometry of geometries) {\n switch (geometry.type) {\n case 'Point':\n dist = Math.min(dist, pointSetToPointSetDistance(pointPosition, false, [geometry.coordinates], false, ruler, dist));\n break;\n case 'LineString':\n dist = Math.min(dist, pointSetToPointSetDistance(pointPosition, false, geometry.coordinates, true, ruler, dist));\n break;\n case 'Polygon':\n dist = Math.min(dist, pointsToPolygonDistance(pointPosition, false, geometry.coordinates, ruler, dist));\n break;\n }\n if (dist === 0.0) {\n return dist;\n }\n }\n return dist;\n}\nfunction lineStringToGeometryDistance(ctx, geometries) {\n const tileLine = ctx.geometry();\n const linePositions = tileLine.flat().map(p => getLngLatFromTileCoord([p.x, p.y], ctx.canonical));\n if (tileLine.length === 0) {\n return NaN;\n }\n const ruler = new CheapRuler(linePositions[0][1]);\n let dist = Infinity;\n for (const geometry of geometries) {\n switch (geometry.type) {\n case 'Point':\n dist = Math.min(dist, pointSetToPointSetDistance(linePositions, true, [geometry.coordinates], false, ruler, dist));\n break;\n case 'LineString':\n dist = Math.min(dist, pointSetToPointSetDistance(linePositions, true, geometry.coordinates, true, ruler, dist));\n break;\n case 'Polygon':\n dist = Math.min(dist, pointsToPolygonDistance(linePositions, true, geometry.coordinates, ruler, dist));\n break;\n }\n if (dist === 0.0) {\n return dist;\n }\n }\n return dist;\n}\nfunction polygonToGeometryDistance(ctx, geometries) {\n const tilePolygon = ctx.geometry();\n if (tilePolygon.length === 0 || tilePolygon[0].length === 0) {\n return NaN;\n }\n const polygons = classifyRings(tilePolygon, 0).map(polygon => {\n return polygon.map(ring => {\n return ring.map(p => getLngLatFromTileCoord([p.x, p.y], ctx.canonical));\n });\n });\n const ruler = new CheapRuler(polygons[0][0][0][1]);\n let dist = Infinity;\n for (const geometry of geometries) {\n for (const polygon of polygons) {\n switch (geometry.type) {\n case 'Point':\n dist = Math.min(dist, pointsToPolygonDistance([geometry.coordinates], false, polygon, ruler, dist));\n break;\n case 'LineString':\n dist = Math.min(dist, pointsToPolygonDistance(geometry.coordinates, true, polygon, ruler, dist));\n break;\n case 'Polygon':\n dist = Math.min(dist, polygonToPolygonDistance(polygon, geometry.coordinates, ruler, dist));\n break;\n }\n if (dist === 0.0) {\n return dist;\n }\n }\n }\n return dist;\n}\nfunction toSimpleGeometry(geometry) {\n if (geometry.type === 'MultiPolygon') {\n return geometry.coordinates.map(polygon => {\n return {\n type: 'Polygon',\n coordinates: polygon\n };\n });\n }\n if (geometry.type === 'MultiLineString') {\n return geometry.coordinates.map(lineString => {\n return {\n type: 'LineString',\n coordinates: lineString\n };\n });\n }\n if (geometry.type === 'MultiPoint') {\n return geometry.coordinates.map(point => {\n return {\n type: 'Point',\n coordinates: point\n };\n });\n }\n return [geometry];\n}\nclass Distance {\n constructor(geojson, geometries) {\n this.type = NumberType;\n this.geojson = geojson;\n this.geometries = geometries;\n }\n static parse(args, context) {\n if (args.length !== 2)\n return context.error(`'distance' expression requires exactly one argument, but found ${args.length - 1} instead.`);\n if (isValue(args[1])) {\n const geojson = args[1];\n if (geojson.type === 'FeatureCollection') {\n return new Distance(geojson, geojson.features.map(feature => toSimpleGeometry(feature.geometry)).flat());\n }\n else if (geojson.type === 'Feature') {\n return new Distance(geojson, toSimpleGeometry(geojson.geometry));\n }\n else if ('type' in geojson && 'coordinates' in geojson) {\n return new Distance(geojson, toSimpleGeometry(geojson));\n }\n }\n return context.error('\\'distance\\' expression requires valid geojson object that contains polygon geometry type.');\n }\n evaluate(ctx) {\n if (ctx.geometry() != null && ctx.canonicalID() != null) {\n if (ctx.geometryType() === 'Point') {\n return pointToGeometryDistance(ctx, this.geometries);\n }\n else if (ctx.geometryType() === 'LineString') {\n return lineStringToGeometryDistance(ctx, this.geometries);\n }\n else if (ctx.geometryType() === 'Polygon') {\n return polygonToGeometryDistance(ctx, this.geometries);\n }\n }\n return NaN;\n }\n eachChild() { }\n outputDefined() {\n return true;\n }\n}\n\nconst expressions$1 = {\n // special forms\n '==': Equals,\n '!=': NotEquals,\n '>': GreaterThan,\n '<': LessThan,\n '>=': GreaterThanOrEqual,\n '<=': LessThanOrEqual,\n 'array': Assertion,\n 'at': At,\n 'boolean': Assertion,\n 'case': Case,\n 'coalesce': Coalesce,\n 'collator': CollatorExpression,\n 'format': FormatExpression,\n 'image': ImageExpression,\n 'in': In,\n 'index-of': IndexOf,\n 'interpolate': Interpolate,\n 'interpolate-hcl': Interpolate,\n 'interpolate-lab': Interpolate,\n 'length': Length,\n 'let': Let,\n 'literal': Literal,\n 'match': Match,\n 'number': Assertion,\n 'number-format': NumberFormat,\n 'object': Assertion,\n 'slice': Slice,\n 'step': Step,\n 'string': Assertion,\n 'to-boolean': Coercion,\n 'to-color': Coercion,\n 'to-number': Coercion,\n 'to-string': Coercion,\n 'var': Var,\n 'within': Within,\n 'distance': Distance\n};\n\nclass CompoundExpression {\n constructor(name, type, evaluate, args) {\n this.name = name;\n this.type = type;\n this._evaluate = evaluate;\n this.args = args;\n }\n evaluate(ctx) {\n return this._evaluate(ctx, this.args);\n }\n eachChild(fn) {\n this.args.forEach(fn);\n }\n outputDefined() {\n return false;\n }\n static parse(args, context) {\n const op = args[0];\n const definition = CompoundExpression.definitions[op];\n if (!definition) {\n return context.error(`Unknown expression \"${op}\". If you wanted a literal array, use [\"literal\", [...]].`, 0);\n }\n // Now check argument types against each signature\n const type = Array.isArray(definition) ?\n definition[0] : definition.type;\n const availableOverloads = Array.isArray(definition) ?\n [[definition[1], definition[2]]] :\n definition.overloads;\n const overloads = availableOverloads.filter(([signature]) => (!Array.isArray(signature) || // varags\n signature.length === args.length - 1 // correct param count\n ));\n let signatureContext = null;\n for (const [params, evaluate] of overloads) {\n // Use a fresh context for each attempted signature so that, if\n // we eventually succeed, we haven't polluted `context.errors`.\n signatureContext = new ParsingContext(context.registry, isExpressionConstant, context.path, null, context.scope);\n // First parse all the args, potentially coercing to the\n // types expected by this overload.\n const parsedArgs = [];\n let argParseFailed = false;\n for (let i = 1; i < args.length; i++) {\n const arg = args[i];\n const expectedType = Array.isArray(params) ?\n params[i - 1] :\n params.type;\n const parsed = signatureContext.parse(arg, 1 + parsedArgs.length, expectedType);\n if (!parsed) {\n argParseFailed = true;\n break;\n }\n parsedArgs.push(parsed);\n }\n if (argParseFailed) {\n // Couldn't coerce args of this overload to expected type, move\n // on to next one.\n continue;\n }\n if (Array.isArray(params)) {\n if (params.length !== parsedArgs.length) {\n signatureContext.error(`Expected ${params.length} arguments, but found ${parsedArgs.length} instead.`);\n continue;\n }\n }\n for (let i = 0; i < parsedArgs.length; i++) {\n const expected = Array.isArray(params) ? params[i] : params.type;\n const arg = parsedArgs[i];\n signatureContext.concat(i + 1).checkSubtype(expected, arg.type);\n }\n if (signatureContext.errors.length === 0) {\n return new CompoundExpression(op, type, evaluate, parsedArgs);\n }\n }\n if (overloads.length === 1) {\n context.errors.push(...signatureContext.errors);\n }\n else {\n const expected = overloads.length ? overloads : availableOverloads;\n const signatures = expected\n .map(([params]) => stringifySignature(params))\n .join(' | ');\n const actualTypes = [];\n // For error message, re-parse arguments without trying to\n // apply any coercions\n for (let i = 1; i < args.length; i++) {\n const parsed = context.parse(args[i], 1 + actualTypes.length);\n if (!parsed)\n return null;\n actualTypes.push(typeToString(parsed.type));\n }\n context.error(`Expected arguments of type ${signatures}, but found (${actualTypes.join(', ')}) instead.`);\n }\n return null;\n }\n static register(registry, definitions) {\n CompoundExpression.definitions = definitions;\n for (const name in definitions) {\n registry[name] = CompoundExpression;\n }\n }\n}\nfunction rgba(ctx, [r, g, b, a]) {\n r = r.evaluate(ctx);\n g = g.evaluate(ctx);\n b = b.evaluate(ctx);\n const alpha = a ? a.evaluate(ctx) : 1;\n const error = validateRGBA(r, g, b, alpha);\n if (error)\n throw new RuntimeError(error);\n return new Color(r / 255, g / 255, b / 255, alpha, false);\n}\nfunction has(key, obj) {\n return key in obj;\n}\nfunction get(key, obj) {\n const v = obj[key];\n return typeof v === 'undefined' ? null : v;\n}\nfunction binarySearch(v, a, i, j) {\n while (i <= j) {\n const m = (i + j) >> 1;\n if (a[m] === v)\n return true;\n if (a[m] > v)\n j = m - 1;\n else\n i = m + 1;\n }\n return false;\n}\nfunction varargs(type) {\n return { type };\n}\nCompoundExpression.register(expressions$1, {\n 'error': [\n ErrorType,\n [StringType],\n (ctx, [v]) => { throw new RuntimeError(v.evaluate(ctx)); }\n ],\n 'typeof': [\n StringType,\n [ValueType],\n (ctx, [v]) => typeToString(typeOf(v.evaluate(ctx)))\n ],\n 'to-rgba': [\n array(NumberType, 4),\n [ColorType],\n (ctx, [v]) => {\n const [r, g, b, a] = v.evaluate(ctx).rgb;\n return [r * 255, g * 255, b * 255, a];\n },\n ],\n 'rgb': [\n ColorType,\n [NumberType, NumberType, NumberType],\n rgba\n ],\n 'rgba': [\n ColorType,\n [NumberType, NumberType, NumberType, NumberType],\n rgba\n ],\n 'has': {\n type: BooleanType,\n overloads: [\n [\n [StringType],\n (ctx, [key]) => has(key.evaluate(ctx), ctx.properties())\n ], [\n [StringType, ObjectType],\n (ctx, [key, obj]) => has(key.evaluate(ctx), obj.evaluate(ctx))\n ]\n ]\n },\n 'get': {\n type: ValueType,\n overloads: [\n [\n [StringType],\n (ctx, [key]) => get(key.evaluate(ctx), ctx.properties())\n ], [\n [StringType, ObjectType],\n (ctx, [key, obj]) => get(key.evaluate(ctx), obj.evaluate(ctx))\n ]\n ]\n },\n 'feature-state': [\n ValueType,\n [StringType],\n (ctx, [key]) => get(key.evaluate(ctx), ctx.featureState || {})\n ],\n 'properties': [\n ObjectType,\n [],\n (ctx) => ctx.properties()\n ],\n 'geometry-type': [\n StringType,\n [],\n (ctx) => ctx.geometryType()\n ],\n 'id': [\n ValueType,\n [],\n (ctx) => ctx.id()\n ],\n 'zoom': [\n NumberType,\n [],\n (ctx) => ctx.globals.zoom\n ],\n 'heatmap-density': [\n NumberType,\n [],\n (ctx) => ctx.globals.heatmapDensity || 0\n ],\n 'line-progress': [\n NumberType,\n [],\n (ctx) => ctx.globals.lineProgress || 0\n ],\n 'accumulated': [\n ValueType,\n [],\n (ctx) => ctx.globals.accumulated === undefined ? null : ctx.globals.accumulated\n ],\n '+': [\n NumberType,\n varargs(NumberType),\n (ctx, args) => {\n let result = 0;\n for (const arg of args) {\n result += arg.evaluate(ctx);\n }\n return result;\n }\n ],\n '*': [\n NumberType,\n varargs(NumberType),\n (ctx, args) => {\n let result = 1;\n for (const arg of args) {\n result *= arg.evaluate(ctx);\n }\n return result;\n }\n ],\n '-': {\n type: NumberType,\n overloads: [\n [\n [NumberType, NumberType],\n (ctx, [a, b]) => a.evaluate(ctx) - b.evaluate(ctx)\n ], [\n [NumberType],\n (ctx, [a]) => -a.evaluate(ctx)\n ]\n ]\n },\n '/': [\n NumberType,\n [NumberType, NumberType],\n (ctx, [a, b]) => a.evaluate(ctx) / b.evaluate(ctx)\n ],\n '%': [\n NumberType,\n [NumberType, NumberType],\n (ctx, [a, b]) => a.evaluate(ctx) % b.evaluate(ctx)\n ],\n 'ln2': [\n NumberType,\n [],\n () => Math.LN2\n ],\n 'pi': [\n NumberType,\n [],\n () => Math.PI\n ],\n 'e': [\n NumberType,\n [],\n () => Math.E\n ],\n '^': [\n NumberType,\n [NumberType, NumberType],\n (ctx, [b, e]) => Math.pow(b.evaluate(ctx), e.evaluate(ctx))\n ],\n 'sqrt': [\n NumberType,\n [NumberType],\n (ctx, [x]) => Math.sqrt(x.evaluate(ctx))\n ],\n 'log10': [\n NumberType,\n [NumberType],\n (ctx, [n]) => Math.log(n.evaluate(ctx)) / Math.LN10\n ],\n 'ln': [\n NumberType,\n [NumberType],\n (ctx, [n]) => Math.log(n.evaluate(ctx))\n ],\n 'log2': [\n NumberType,\n [NumberType],\n (ctx, [n]) => Math.log(n.evaluate(ctx)) / Math.LN2\n ],\n 'sin': [\n NumberType,\n [NumberType],\n (ctx, [n]) => Math.sin(n.evaluate(ctx))\n ],\n 'cos': [\n NumberType,\n [NumberType],\n (ctx, [n]) => Math.cos(n.evaluate(ctx))\n ],\n 'tan': [\n NumberType,\n [NumberType],\n (ctx, [n]) => Math.tan(n.evaluate(ctx))\n ],\n 'asin': [\n NumberType,\n [NumberType],\n (ctx, [n]) => Math.asin(n.evaluate(ctx))\n ],\n 'acos': [\n NumberType,\n [NumberType],\n (ctx, [n]) => Math.acos(n.evaluate(ctx))\n ],\n 'atan': [\n NumberType,\n [NumberType],\n (ctx, [n]) => Math.atan(n.evaluate(ctx))\n ],\n 'min': [\n NumberType,\n varargs(NumberType),\n (ctx, args) => Math.min(...args.map(arg => arg.evaluate(ctx)))\n ],\n 'max': [\n NumberType,\n varargs(NumberType),\n (ctx, args) => Math.max(...args.map(arg => arg.evaluate(ctx)))\n ],\n 'abs': [\n NumberType,\n [NumberType],\n (ctx, [n]) => Math.abs(n.evaluate(ctx))\n ],\n 'round': [\n NumberType,\n [NumberType],\n (ctx, [n]) => {\n const v = n.evaluate(ctx);\n // Javascript's Math.round() rounds towards +Infinity for halfway\n // values, even when they're negative. It's more common to round\n // away from 0 (e.g., this is what python and C++ do)\n return v < 0 ? -Math.round(-v) : Math.round(v);\n }\n ],\n 'floor': [\n NumberType,\n [NumberType],\n (ctx, [n]) => Math.floor(n.evaluate(ctx))\n ],\n 'ceil': [\n NumberType,\n [NumberType],\n (ctx, [n]) => Math.ceil(n.evaluate(ctx))\n ],\n 'filter-==': [\n BooleanType,\n [StringType, ValueType],\n (ctx, [k, v]) => ctx.properties()[k.value] === v.value\n ],\n 'filter-id-==': [\n BooleanType,\n [ValueType],\n (ctx, [v]) => ctx.id() === v.value\n ],\n 'filter-type-==': [\n BooleanType,\n [StringType],\n (ctx, [v]) => ctx.geometryDollarType() === v.value\n ],\n 'filter-<': [\n BooleanType,\n [StringType, ValueType],\n (ctx, [k, v]) => {\n const a = ctx.properties()[k.value];\n const b = v.value;\n return typeof a === typeof b && a < b;\n }\n ],\n 'filter-id-<': [\n BooleanType,\n [ValueType],\n (ctx, [v]) => {\n const a = ctx.id();\n const b = v.value;\n return typeof a === typeof b && a < b;\n }\n ],\n 'filter->': [\n BooleanType,\n [StringType, ValueType],\n (ctx, [k, v]) => {\n const a = ctx.properties()[k.value];\n const b = v.value;\n return typeof a === typeof b && a > b;\n }\n ],\n 'filter-id->': [\n BooleanType,\n [ValueType],\n (ctx, [v]) => {\n const a = ctx.id();\n const b = v.value;\n return typeof a === typeof b && a > b;\n }\n ],\n 'filter-<=': [\n BooleanType,\n [StringType, ValueType],\n (ctx, [k, v]) => {\n const a = ctx.properties()[k.value];\n const b = v.value;\n return typeof a === typeof b && a <= b;\n }\n ],\n 'filter-id-<=': [\n BooleanType,\n [ValueType],\n (ctx, [v]) => {\n const a = ctx.id();\n const b = v.value;\n return typeof a === typeof b && a <= b;\n }\n ],\n 'filter->=': [\n BooleanType,\n [StringType, ValueType],\n (ctx, [k, v]) => {\n const a = ctx.properties()[k.value];\n const b = v.value;\n return typeof a === typeof b && a >= b;\n }\n ],\n 'filter-id->=': [\n BooleanType,\n [ValueType],\n (ctx, [v]) => {\n const a = ctx.id();\n const b = v.value;\n return typeof a === typeof b && a >= b;\n }\n ],\n 'filter-has': [\n BooleanType,\n [ValueType],\n (ctx, [k]) => k.value in ctx.properties()\n ],\n 'filter-has-id': [\n BooleanType,\n [],\n (ctx) => (ctx.id() !== null && ctx.id() !== undefined)\n ],\n 'filter-type-in': [\n BooleanType,\n [array(StringType)],\n (ctx, [v]) => v.value.indexOf(ctx.geometryDollarType()) >= 0\n ],\n 'filter-id-in': [\n BooleanType,\n [array(ValueType)],\n (ctx, [v]) => v.value.indexOf(ctx.id()) >= 0\n ],\n 'filter-in-small': [\n BooleanType,\n [StringType, array(ValueType)],\n // assumes v is an array literal\n (ctx, [k, v]) => v.value.indexOf(ctx.properties()[k.value]) >= 0\n ],\n 'filter-in-large': [\n BooleanType,\n [StringType, array(ValueType)],\n // assumes v is a array literal with values sorted in ascending order and of a single type\n (ctx, [k, v]) => binarySearch(ctx.properties()[k.value], v.value, 0, v.value.length - 1)\n ],\n 'all': {\n type: BooleanType,\n overloads: [\n [\n [BooleanType, BooleanType],\n (ctx, [a, b]) => a.evaluate(ctx) && b.evaluate(ctx)\n ],\n [\n varargs(BooleanType),\n (ctx, args) => {\n for (const arg of args) {\n if (!arg.evaluate(ctx))\n return false;\n }\n return true;\n }\n ]\n ]\n },\n 'any': {\n type: BooleanType,\n overloads: [\n [\n [BooleanType, BooleanType],\n (ctx, [a, b]) => a.evaluate(ctx) || b.evaluate(ctx)\n ],\n [\n varargs(BooleanType),\n (ctx, args) => {\n for (const arg of args) {\n if (arg.evaluate(ctx))\n return true;\n }\n return false;\n }\n ]\n ]\n },\n '!': [\n BooleanType,\n [BooleanType],\n (ctx, [b]) => !b.evaluate(ctx)\n ],\n 'is-supported-script': [\n BooleanType,\n [StringType],\n // At parse time this will always return true, so we need to exclude this expression with isGlobalPropertyConstant\n (ctx, [s]) => {\n const isSupportedScript = ctx.globals && ctx.globals.isSupportedScript;\n if (isSupportedScript) {\n return isSupportedScript(s.evaluate(ctx));\n }\n return true;\n }\n ],\n 'upcase': [\n StringType,\n [StringType],\n (ctx, [s]) => s.evaluate(ctx).toUpperCase()\n ],\n 'downcase': [\n StringType,\n [StringType],\n (ctx, [s]) => s.evaluate(ctx).toLowerCase()\n ],\n 'concat': [\n StringType,\n varargs(ValueType),\n (ctx, args) => args.map(arg => valueToString(arg.evaluate(ctx))).join('')\n ],\n 'resolved-locale': [\n StringType,\n [CollatorType],\n (ctx, [collator]) => collator.evaluate(ctx).resolvedLocale()\n ]\n});\nfunction stringifySignature(signature) {\n if (Array.isArray(signature)) {\n return `(${signature.map(typeToString).join(', ')})`;\n }\n else {\n return `(${typeToString(signature.type)}...)`;\n }\n}\nfunction isExpressionConstant(expression) {\n if (expression instanceof Var) {\n return isExpressionConstant(expression.boundExpression);\n }\n else if (expression instanceof CompoundExpression && expression.name === 'error') {\n return false;\n }\n else if (expression instanceof CollatorExpression) {\n // Although the results of a Collator expression with fixed arguments\n // generally shouldn't change between executions, we can't serialize them\n // as constant expressions because results change based on environment.\n return false;\n }\n else if (expression instanceof Within) {\n return false;\n }\n else if (expression instanceof Distance) {\n return false;\n }\n const isTypeAnnotation = expression instanceof Coercion ||\n expression instanceof Assertion;\n let childrenConstant = true;\n expression.eachChild(child => {\n // We can _almost_ assume that if `expressions` children are constant,\n // they would already have been evaluated to Literal values when they\n // were parsed. Type annotations are the exception, because they might\n // have been inferred and added after a child was parsed.\n // So we recurse into isConstant() for the children of type annotations,\n // but otherwise simply check whether they are Literals.\n if (isTypeAnnotation) {\n childrenConstant = childrenConstant && isExpressionConstant(child);\n }\n else {\n childrenConstant = childrenConstant && child instanceof Literal;\n }\n });\n if (!childrenConstant) {\n return false;\n }\n return isFeatureConstant(expression) &&\n isGlobalPropertyConstant(expression, ['zoom', 'heatmap-density', 'line-progress', 'accumulated', 'is-supported-script']);\n}\nfunction isFeatureConstant(e) {\n if (e instanceof CompoundExpression) {\n if (e.name === 'get' && e.args.length === 1) {\n return false;\n }\n else if (e.name === 'feature-state') {\n return false;\n }\n else if (e.name === 'has' && e.args.length === 1) {\n return false;\n }\n else if (e.name === 'properties' ||\n e.name === 'geometry-type' ||\n e.name === 'id') {\n return false;\n }\n else if (/^filter-/.test(e.name)) {\n return false;\n }\n }\n if (e instanceof Within) {\n return false;\n }\n if (e instanceof Distance) {\n return false;\n }\n let result = true;\n e.eachChild(arg => {\n if (result && !isFeatureConstant(arg)) {\n result = false;\n }\n });\n return result;\n}\nfunction isStateConstant(e) {\n if (e instanceof CompoundExpression) {\n if (e.name === 'feature-state') {\n return false;\n }\n }\n let result = true;\n e.eachChild(arg => {\n if (result && !isStateConstant(arg)) {\n result = false;\n }\n });\n return result;\n}\nfunction isGlobalPropertyConstant(e, properties) {\n if (e instanceof CompoundExpression && properties.indexOf(e.name) >= 0) {\n return false;\n }\n let result = true;\n e.eachChild((arg) => {\n if (result && !isGlobalPropertyConstant(arg, properties)) {\n result = false;\n }\n });\n return result;\n}\n\nfunction success(value) {\n return { result: 'success', value };\n}\nfunction error(value) {\n return { result: 'error', value };\n}\n\nfunction supportsPropertyExpression(spec) {\n return spec['property-type'] === 'data-driven' || spec['property-type'] === 'cross-faded-data-driven';\n}\nfunction supportsZoomExpression(spec) {\n return !!spec.expression && spec.expression.parameters.indexOf('zoom') > -1;\n}\nfunction supportsInterpolation(spec) {\n return !!spec.expression && spec.expression.interpolated;\n}\n\nfunction getType(val) {\n if (val instanceof Number) {\n return 'number';\n }\n else if (val instanceof String) {\n return 'string';\n }\n else if (val instanceof Boolean) {\n return 'boolean';\n }\n else if (Array.isArray(val)) {\n return 'array';\n }\n else if (val === null) {\n return 'null';\n }\n else {\n return typeof val;\n }\n}\n\nfunction isFunction$1(value) {\n return typeof value === 'object' && value !== null && !Array.isArray(value);\n}\nfunction identityFunction(x) {\n return x;\n}\nfunction createFunction(parameters, propertySpec) {\n const isColor = propertySpec.type === 'color';\n const zoomAndFeatureDependent = parameters.stops && typeof parameters.stops[0][0] === 'object';\n const featureDependent = zoomAndFeatureDependent || parameters.property !== undefined;\n const zoomDependent = zoomAndFeatureDependent || !featureDependent;\n const type = parameters.type || (supportsInterpolation(propertySpec) ? 'exponential' : 'interval');\n if (isColor || propertySpec.type === 'padding') {\n const parseFn = isColor ? Color.parse : Padding.parse;\n parameters = extendBy({}, parameters);\n if (parameters.stops) {\n parameters.stops = parameters.stops.map((stop) => {\n return [stop[0], parseFn(stop[1])];\n });\n }\n if (parameters.default) {\n parameters.default = parseFn(parameters.default);\n }\n else {\n parameters.default = parseFn(propertySpec.default);\n }\n }\n if (parameters.colorSpace && !isSupportedInterpolationColorSpace(parameters.colorSpace)) {\n throw new Error(`Unknown color space: \"${parameters.colorSpace}\"`);\n }\n let innerFun;\n let hashedStops;\n let categoricalKeyType;\n if (type === 'exponential') {\n innerFun = evaluateExponentialFunction;\n }\n else if (type === 'interval') {\n innerFun = evaluateIntervalFunction;\n }\n else if (type === 'categorical') {\n innerFun = evaluateCategoricalFunction;\n // For categorical functions, generate an Object as a hashmap of the stops for fast searching\n hashedStops = Object.create(null);\n for (const stop of parameters.stops) {\n hashedStops[stop[0]] = stop[1];\n }\n // Infer key type based on first stop key-- used to encforce strict type checking later\n categoricalKeyType = typeof parameters.stops[0][0];\n }\n else if (type === 'identity') {\n innerFun = evaluateIdentityFunction;\n }\n else {\n throw new Error(`Unknown function type \"${type}\"`);\n }\n if (zoomAndFeatureDependent) {\n const featureFunctions = {};\n const zoomStops = [];\n for (let s = 0; s < parameters.stops.length; s++) {\n const stop = parameters.stops[s];\n const zoom = stop[0].zoom;\n if (featureFunctions[zoom] === undefined) {\n featureFunctions[zoom] = {\n zoom,\n type: parameters.type,\n property: parameters.property,\n default: parameters.default,\n stops: []\n };\n zoomStops.push(zoom);\n }\n featureFunctions[zoom].stops.push([stop[0].value, stop[1]]);\n }\n const featureFunctionStops = [];\n for (const z of zoomStops) {\n featureFunctionStops.push([featureFunctions[z].zoom, createFunction(featureFunctions[z], propertySpec)]);\n }\n const interpolationType = { name: 'linear' };\n return {\n kind: 'composite',\n interpolationType,\n interpolationFactor: Interpolate.interpolationFactor.bind(undefined, interpolationType),\n zoomStops: featureFunctionStops.map(s => s[0]),\n evaluate({ zoom }, properties) {\n return evaluateExponentialFunction({\n stops: featureFunctionStops,\n base: parameters.base\n }, propertySpec, zoom).evaluate(zoom, properties);\n }\n };\n }\n else if (zoomDependent) {\n const interpolationType = type === 'exponential' ?\n { name: 'exponential', base: parameters.base !== undefined ? parameters.base : 1 } : null;\n return {\n kind: 'camera',\n interpolationType,\n interpolationFactor: Interpolate.interpolationFactor.bind(undefined, interpolationType),\n zoomStops: parameters.stops.map(s => s[0]),\n evaluate: ({ zoom }) => innerFun(parameters, propertySpec, zoom, hashedStops, categoricalKeyType)\n };\n }\n else {\n return {\n kind: 'source',\n evaluate(_, feature) {\n const value = feature && feature.properties ? feature.properties[parameters.property] : undefined;\n if (value === undefined) {\n return coalesce$1(parameters.default, propertySpec.default);\n }\n return innerFun(parameters, propertySpec, value, hashedStops, categoricalKeyType);\n }\n };\n }\n}\nfunction coalesce$1(a, b, c) {\n if (a !== undefined)\n return a;\n if (b !== undefined)\n return b;\n if (c !== undefined)\n return c;\n}\nfunction evaluateCategoricalFunction(parameters, propertySpec, input, hashedStops, keyType) {\n const evaluated = typeof input === keyType ? hashedStops[input] : undefined; // Enforce strict typing on input\n return coalesce$1(evaluated, parameters.default, propertySpec.default);\n}\nfunction evaluateIntervalFunction(parameters, propertySpec, input) {\n // Edge cases\n if (getType(input) !== 'number')\n return coalesce$1(parameters.default, propertySpec.default);\n const n = parameters.stops.length;\n if (n === 1)\n return parameters.stops[0][1];\n if (input <= parameters.stops[0][0])\n return parameters.stops[0][1];\n if (input >= parameters.stops[n - 1][0])\n return parameters.stops[n - 1][1];\n const index = findStopLessThanOrEqualTo(parameters.stops.map((stop) => stop[0]), input);\n return parameters.stops[index][1];\n}\nfunction evaluateExponentialFunction(parameters, propertySpec, input) {\n const base = parameters.base !== undefined ? parameters.base : 1;\n // Edge cases\n if (getType(input) !== 'number')\n return coalesce$1(parameters.default, propertySpec.default);\n const n = parameters.stops.length;\n if (n === 1)\n return parameters.stops[0][1];\n if (input <= parameters.stops[0][0])\n return parameters.stops[0][1];\n if (input >= parameters.stops[n - 1][0])\n return parameters.stops[n - 1][1];\n const index = findStopLessThanOrEqualTo(parameters.stops.map((stop) => stop[0]), input);\n const t = interpolationFactor(input, base, parameters.stops[index][0], parameters.stops[index + 1][0]);\n const outputLower = parameters.stops[index][1];\n const outputUpper = parameters.stops[index + 1][1];\n const interp = interpolateFactory[propertySpec.type] || identityFunction;\n if (typeof outputLower.evaluate === 'function') {\n return {\n evaluate(...args) {\n const evaluatedLower = outputLower.evaluate.apply(undefined, args);\n const evaluatedUpper = outputUpper.evaluate.apply(undefined, args);\n // Special case for fill-outline-color, which has no spec default.\n if (evaluatedLower === undefined || evaluatedUpper === undefined) {\n return undefined;\n }\n return interp(evaluatedLower, evaluatedUpper, t, parameters.colorSpace);\n }\n };\n }\n return interp(outputLower, outputUpper, t, parameters.colorSpace);\n}\nfunction evaluateIdentityFunction(parameters, propertySpec, input) {\n switch (propertySpec.type) {\n case 'color':\n input = Color.parse(input);\n break;\n case 'formatted':\n input = Formatted.fromString(input.toString());\n break;\n case 'resolvedImage':\n input = ResolvedImage.fromString(input.toString());\n break;\n case 'padding':\n input = Padding.parse(input);\n break;\n default:\n if (getType(input) !== propertySpec.type && (propertySpec.type !== 'enum' || !propertySpec.values[input])) {\n input = undefined;\n }\n }\n return coalesce$1(input, parameters.default, propertySpec.default);\n}\n/**\n * Returns a ratio that can be used to interpolate between exponential function\n * stops.\n *\n * How it works:\n * Two consecutive stop values define a (scaled and shifted) exponential\n * function `f(x) = a * base^x + b`, where `base` is the user-specified base,\n * and `a` and `b` are constants affording sufficient degrees of freedom to fit\n * the function to the given stops.\n *\n * Here's a bit of algebra that lets us compute `f(x)` directly from the stop\n * values without explicitly solving for `a` and `b`:\n *\n * First stop value: `f(x0) = y0 = a * base^x0 + b`\n * Second stop value: `f(x1) = y1 = a * base^x1 + b`\n * => `y1 - y0 = a(base^x1 - base^x0)`\n * => `a = (y1 - y0)/(base^x1 - base^x0)`\n *\n * Desired value: `f(x) = y = a * base^x + b`\n * => `f(x) = y0 + a * (base^x - base^x0)`\n *\n * From the above, we can replace the `a` in `a * (base^x - base^x0)` and do a\n * little algebra:\n * ```\n * a * (base^x - base^x0) = (y1 - y0)/(base^x1 - base^x0) * (base^x - base^x0)\n * = (y1 - y0) * (base^x - base^x0) / (base^x1 - base^x0)\n * ```\n *\n * If we let `(base^x - base^x0) / (base^x1 base^x0)`, then we have\n * `f(x) = y0 + (y1 - y0) * ratio`. In other words, `ratio` may be treated as\n * an interpolation factor between the two stops' output values.\n *\n * (Note: a slightly different form for `ratio`,\n * `(base^(x-x0) - 1) / (base^(x1-x0) - 1) `, is equivalent, but requires fewer\n * expensive `Math.pow()` operations.)\n *\n * @private\n */\nfunction interpolationFactor(input, base, lowerValue, upperValue) {\n const difference = upperValue - lowerValue;\n const progress = input - lowerValue;\n if (difference === 0) {\n return 0;\n }\n else if (base === 1) {\n return progress / difference;\n }\n else {\n return (Math.pow(base, progress) - 1) / (Math.pow(base, difference) - 1);\n }\n}\n\nclass StyleExpression {\n constructor(expression, propertySpec) {\n this.expression = expression;\n this._warningHistory = {};\n this._evaluator = new EvaluationContext();\n this._defaultValue = propertySpec ? getDefaultValue(propertySpec) : null;\n this._enumValues = propertySpec && propertySpec.type === 'enum' ? propertySpec.values : null;\n }\n evaluateWithoutErrorHandling(globals, feature, featureState, canonical, availableImages, formattedSection) {\n this._evaluator.globals = globals;\n this._evaluator.feature = feature;\n this._evaluator.featureState = featureState;\n this._evaluator.canonical = canonical;\n this._evaluator.availableImages = availableImages || null;\n this._evaluator.formattedSection = formattedSection;\n return this.expression.evaluate(this._evaluator);\n }\n evaluate(globals, feature, featureState, canonical, availableImages, formattedSection) {\n this._evaluator.globals = globals;\n this._evaluator.feature = feature || null;\n this._evaluator.featureState = featureState || null;\n this._evaluator.canonical = canonical;\n this._evaluator.availableImages = availableImages || null;\n this._evaluator.formattedSection = formattedSection || null;\n try {\n const val = this.expression.evaluate(this._evaluator);\n if (val === null || val === undefined || (typeof val === 'number' && val !== val)) {\n return this._defaultValue;\n }\n if (this._enumValues && !(val in this._enumValues)) {\n throw new RuntimeError(`Expected value to be one of ${Object.keys(this._enumValues).map(v => JSON.stringify(v)).join(', ')}, but found ${JSON.stringify(val)} instead.`);\n }\n return val;\n }\n catch (e) {\n if (!this._warningHistory[e.message]) {\n this._warningHistory[e.message] = true;\n if (typeof console !== 'undefined') {\n console.warn(e.message);\n }\n }\n return this._defaultValue;\n }\n }\n}\nfunction isExpression(expression) {\n return Array.isArray(expression) && expression.length > 0 &&\n typeof expression[0] === 'string' && expression[0] in expressions$1;\n}\n/**\n * Parse and typecheck the given style spec JSON expression. If\n * options.defaultValue is provided, then the resulting StyleExpression's\n * `evaluate()` method will handle errors by logging a warning (once per\n * message) and returning the default value. Otherwise, it will throw\n * evaluation errors.\n *\n * @private\n */\nfunction createExpression(expression, propertySpec) {\n const parser = new ParsingContext(expressions$1, isExpressionConstant, [], propertySpec ? getExpectedType(propertySpec) : undefined);\n // For string-valued properties, coerce to string at the top level rather than asserting.\n const parsed = parser.parse(expression, undefined, undefined, undefined, propertySpec && propertySpec.type === 'string' ? { typeAnnotation: 'coerce' } : undefined);\n if (!parsed) {\n return error(parser.errors);\n }\n return success(new StyleExpression(parsed, propertySpec));\n}\nclass ZoomConstantExpression {\n constructor(kind, expression) {\n this.kind = kind;\n this._styleExpression = expression;\n this.isStateDependent = kind !== 'constant' && !isStateConstant(expression.expression);\n }\n evaluateWithoutErrorHandling(globals, feature, featureState, canonical, availableImages, formattedSection) {\n return this._styleExpression.evaluateWithoutErrorHandling(globals, feature, featureState, canonical, availableImages, formattedSection);\n }\n evaluate(globals, feature, featureState, canonical, availableImages, formattedSection) {\n return this._styleExpression.evaluate(globals, feature, featureState, canonical, availableImages, formattedSection);\n }\n}\nclass ZoomDependentExpression {\n constructor(kind, expression, zoomStops, interpolationType) {\n this.kind = kind;\n this.zoomStops = zoomStops;\n this._styleExpression = expression;\n this.isStateDependent = kind !== 'camera' && !isStateConstant(expression.expression);\n this.interpolationType = interpolationType;\n }\n evaluateWithoutErrorHandling(globals, feature, featureState, canonical, availableImages, formattedSection) {\n return this._styleExpression.evaluateWithoutErrorHandling(globals, feature, featureState, canonical, availableImages, formattedSection);\n }\n evaluate(globals, feature, featureState, canonical, availableImages, formattedSection) {\n return this._styleExpression.evaluate(globals, feature, featureState, canonical, availableImages, formattedSection);\n }\n interpolationFactor(input, lower, upper) {\n if (this.interpolationType) {\n return Interpolate.interpolationFactor(this.interpolationType, input, lower, upper);\n }\n else {\n return 0;\n }\n }\n}\nfunction isZoomExpression(expression) {\n return expression._styleExpression !== undefined;\n}\nfunction createPropertyExpression(expressionInput, propertySpec) {\n const expression = createExpression(expressionInput, propertySpec);\n if (expression.result === 'error') {\n return expression;\n }\n const parsed = expression.value.expression;\n const isFeatureConstantResult = isFeatureConstant(parsed);\n if (!isFeatureConstantResult && !supportsPropertyExpression(propertySpec)) {\n return error([new ExpressionParsingError('', 'data expressions not supported')]);\n }\n const isZoomConstant = isGlobalPropertyConstant(parsed, ['zoom']);\n if (!isZoomConstant && !supportsZoomExpression(propertySpec)) {\n return error([new ExpressionParsingError('', 'zoom expressions not supported')]);\n }\n const zoomCurve = findZoomCurve(parsed);\n if (!zoomCurve && !isZoomConstant) {\n return error([new ExpressionParsingError('', '\"zoom\" expression may only be used as input to a top-level \"step\" or \"interpolate\" expression.')]);\n }\n else if (zoomCurve instanceof ExpressionParsingError) {\n return error([zoomCurve]);\n }\n else if (zoomCurve instanceof Interpolate && !supportsInterpolation(propertySpec)) {\n return error([new ExpressionParsingError('', '\"interpolate\" expressions cannot be used with this property')]);\n }\n if (!zoomCurve) {\n return success(isFeatureConstantResult ?\n new ZoomConstantExpression('constant', expression.value) :\n new ZoomConstantExpression('source', expression.value));\n }\n const interpolationType = zoomCurve instanceof Interpolate ? zoomCurve.interpolation : undefined;\n return success(isFeatureConstantResult ?\n new ZoomDependentExpression('camera', expression.value, zoomCurve.labels, interpolationType) :\n new ZoomDependentExpression('composite', expression.value, zoomCurve.labels, interpolationType));\n}\n// serialization wrapper for old-style stop functions normalized to the\n// expression interface\nclass StylePropertyFunction {\n constructor(parameters, specification) {\n this._parameters = parameters;\n this._specification = specification;\n extendBy(this, createFunction(this._parameters, this._specification));\n }\n static deserialize(serialized) {\n return new StylePropertyFunction(serialized._parameters, serialized._specification);\n }\n static serialize(input) {\n return {\n _parameters: input._parameters,\n _specification: input._specification\n };\n }\n}\nfunction normalizePropertyExpression(value, specification) {\n if (isFunction$1(value)) {\n return new StylePropertyFunction(value, specification);\n }\n else if (isExpression(value)) {\n const expression = createPropertyExpression(value, specification);\n if (expression.result === 'error') {\n // this should have been caught in validation\n throw new Error(expression.value.map(err => `${err.key}: ${err.message}`).join(', '));\n }\n return expression.value;\n }\n else {\n let constant = value;\n if (specification.type === 'color' && typeof value === 'string') {\n constant = Color.parse(value);\n }\n else if (specification.type === 'padding' && (typeof value === 'number' || Array.isArray(value))) {\n constant = Padding.parse(value);\n }\n else if (specification.type === 'variableAnchorOffsetCollection' && Array.isArray(value)) {\n constant = VariableAnchorOffsetCollection.parse(value);\n }\n else if (specification.type === 'projectionDefinition' && typeof value === 'string') {\n constant = ProjectionDefinition.parse(value);\n }\n return {\n kind: 'constant',\n evaluate: () => constant\n };\n }\n}\n// Zoom-dependent expressions may only use [\"zoom\"] as the input to a top-level \"step\" or \"interpolate\"\n// expression (collectively referred to as a \"curve\"). The curve may be wrapped in one or more \"let\" or\n// \"coalesce\" expressions.\nfunction findZoomCurve(expression) {\n let result = null;\n if (expression instanceof Let) {\n result = findZoomCurve(expression.result);\n }\n else if (expression instanceof Coalesce) {\n for (const arg of expression.args) {\n result = findZoomCurve(arg);\n if (result) {\n break;\n }\n }\n }\n else if ((expression instanceof Step || expression instanceof Interpolate) &&\n expression.input instanceof CompoundExpression &&\n expression.input.name === 'zoom') {\n result = expression;\n }\n if (result instanceof ExpressionParsingError) {\n return result;\n }\n expression.eachChild((child) => {\n const childResult = findZoomCurve(child);\n if (childResult instanceof ExpressionParsingError) {\n result = childResult;\n }\n else if (!result && childResult) {\n result = new ExpressionParsingError('', '\"zoom\" expression may only be used as input to a top-level \"step\" or \"interpolate\" expression.');\n }\n else if (result && childResult && result !== childResult) {\n result = new ExpressionParsingError('', 'Only one zoom-based \"step\" or \"interpolate\" subexpression may be used in an expression.');\n }\n });\n return result;\n}\nfunction getExpectedType(spec) {\n const types = {\n color: ColorType,\n string: StringType,\n number: NumberType,\n enum: StringType,\n boolean: BooleanType,\n formatted: FormattedType,\n padding: PaddingType,\n projectionDefinition: ProjectionDefinitionType,\n resolvedImage: ResolvedImageType,\n variableAnchorOffsetCollection: VariableAnchorOffsetCollectionType\n };\n if (spec.type === 'array') {\n return array(types[spec.value] || ValueType, spec.length);\n }\n return types[spec.type];\n}\nfunction getDefaultValue(spec) {\n if (spec.type === 'color' && isFunction$1(spec.default)) {\n // Special case for heatmap-color: it uses the 'default:' to define a\n // default color ramp, but createExpression expects a simple value to fall\n // back to in case of runtime errors\n return new Color(0, 0, 0, 0);\n }\n else if (spec.type === 'color') {\n return Color.parse(spec.default) || null;\n }\n else if (spec.type === 'padding') {\n return Padding.parse(spec.default) || null;\n }\n else if (spec.type === 'variableAnchorOffsetCollection') {\n return VariableAnchorOffsetCollection.parse(spec.default) || null;\n }\n else if (spec.type === 'projectionDefinition') {\n return ProjectionDefinition.parse(spec.default) || null;\n }\n else if (spec.default === undefined) {\n return null;\n }\n else {\n return spec.default;\n }\n}\n\nfunction isExpressionFilter(filter) {\n if (filter === true || filter === false) {\n return true;\n }\n if (!Array.isArray(filter) || filter.length === 0) {\n return false;\n }\n switch (filter[0]) {\n case 'has':\n return filter.length >= 2 && filter[1] !== '$id' && filter[1] !== '$type';\n case 'in':\n return filter.length >= 3 && (typeof filter[1] !== 'string' || Array.isArray(filter[2]));\n case '!in':\n case '!has':\n case 'none':\n return false;\n case '==':\n case '!=':\n case '>':\n case '>=':\n case '<':\n case '<=':\n return filter.length !== 3 || (Array.isArray(filter[1]) || Array.isArray(filter[2]));\n case 'any':\n case 'all':\n for (const f of filter.slice(1)) {\n if (!isExpressionFilter(f) && typeof f !== 'boolean') {\n return false;\n }\n }\n return true;\n default:\n return true;\n }\n}\nconst filterSpec = {\n 'type': 'boolean',\n 'default': false,\n 'transition': false,\n 'property-type': 'data-driven',\n 'expression': {\n 'interpolated': false,\n 'parameters': ['zoom', 'feature']\n }\n};\n/**\n * Given a filter expressed as nested arrays, return a new function\n * that evaluates whether a given feature (with a .properties or .tags property)\n * passes its test.\n *\n * @private\n * @param {Array} filter MapLibre filter\n * @returns {Function} filter-evaluating function\n */\nfunction featureFilter(filter) {\n if (filter === null || filter === undefined) {\n return { filter: () => true, needGeometry: false };\n }\n if (!isExpressionFilter(filter)) {\n filter = convertFilter$1(filter);\n }\n const compiled = createExpression(filter, filterSpec);\n if (compiled.result === 'error') {\n throw new Error(compiled.value.map(err => `${err.key}: ${err.message}`).join(', '));\n }\n else {\n const needGeometry = geometryNeeded(filter);\n return { filter: (globalProperties, feature, canonical) => compiled.value.evaluate(globalProperties, feature, {}, canonical),\n needGeometry };\n }\n}\n// Comparison function to sort numbers and strings\nfunction compare(a, b) {\n return a < b ? -1 : a > b ? 1 : 0;\n}\nfunction geometryNeeded(filter) {\n if (!Array.isArray(filter))\n return false;\n if (filter[0] === 'within' || filter[0] === 'distance')\n return true;\n for (let index = 1; index < filter.length; index++) {\n if (geometryNeeded(filter[index]))\n return true;\n }\n return false;\n}\nfunction convertFilter$1(filter) {\n if (!filter)\n return true;\n const op = filter[0];\n if (filter.length <= 1)\n return (op !== 'any');\n const converted = op === '==' ? convertComparisonOp$1(filter[1], filter[2], '==') :\n op === '!=' ? convertNegation(convertComparisonOp$1(filter[1], filter[2], '==')) :\n op === '<' ||\n op === '>' ||\n op === '<=' ||\n op === '>=' ? convertComparisonOp$1(filter[1], filter[2], op) :\n op === 'any' ? convertDisjunctionOp(filter.slice(1)) :\n op === 'all' ? ['all'].concat(filter.slice(1).map(convertFilter$1)) :\n op === 'none' ? ['all'].concat(filter.slice(1).map(convertFilter$1).map(convertNegation)) :\n op === 'in' ? convertInOp$1(filter[1], filter.slice(2)) :\n op === '!in' ? convertNegation(convertInOp$1(filter[1], filter.slice(2))) :\n op === 'has' ? convertHasOp$1(filter[1]) :\n op === '!has' ? convertNegation(convertHasOp$1(filter[1])) :\n true;\n return converted;\n}\nfunction convertComparisonOp$1(property, value, op) {\n switch (property) {\n case '$type':\n return [`filter-type-${op}`, value];\n case '$id':\n return [`filter-id-${op}`, value];\n default:\n return [`filter-${op}`, property, value];\n }\n}\nfunction convertDisjunctionOp(filters) {\n return ['any'].concat(filters.map(convertFilter$1));\n}\nfunction convertInOp$1(property, values) {\n if (values.length === 0) {\n return false;\n }\n switch (property) {\n case '$type':\n return ['filter-type-in', ['literal', values]];\n case '$id':\n return ['filter-id-in', ['literal', values]];\n default:\n if (values.length > 200 && !values.some(v => typeof v !== typeof values[0])) {\n return ['filter-in-large', property, ['literal', values.sort(compare)]];\n }\n else {\n return ['filter-in-small', property, ['literal', values]];\n }\n }\n}\nfunction convertHasOp$1(property) {\n switch (property) {\n case '$type':\n return true;\n case '$id':\n return ['filter-has-id'];\n default:\n return ['filter-has', property];\n }\n}\nfunction convertNegation(filter) {\n return ['!', filter];\n}\n\n/*\n * Convert the given filter to an expression, storing the expected types for\n * any feature properties referenced in expectedTypes.\n *\n * These expected types are needed in order to construct preflight type checks\n * needed for handling 'any' filters. A preflight type check is necessary in\n * order to mimic legacy filters' semantics around expected type mismatches.\n * For example, consider the legacy filter:\n *\n * [\"any\", [\"all\", [\">\", \"y\", 0], [\">\", \"y\", 0]], [\">\", \"x\", 0]]\n *\n * Naively, we might convert this to the expression:\n *\n * [\"any\", [\"all\", [\">\", [\"get\", \"y\"], 0], [\">\", [\"get\", \"z\"], 0]], [\">\", [\"get\", \"x\"], 0]]\n *\n * But if we tried to evaluate this against, say `{x: 1, y: null, z: 0}`, the\n * [\">\", [\"get\", \"y\"], 0] would cause an evaluation error, leading to the\n * entire filter returning false. Legacy filter semantics, though, ask for\n * [\">\", \"y\", 0] to simply return `false` when `y` is of the wrong type,\n * allowing the subsequent terms of the outer \"any\" expression to be evaluated\n * (resulting, in this case, in a `true` value, because x > 0).\n *\n * We account for this by inserting a preflight type-checking expression before\n * each \"any\" term, allowing us to avoid evaluating the actual converted filter\n * if any type mismatches would cause it to produce an evaluation error:\n *\n * [\"any\",\n * [\"case\",\n * [\"all\", [\"==\", [\"typeof\", [\"get\", \"y\"]], \"number\"], [\"==\", [\"typeof\", [\"get\", \"z\"], \"number]],\n * [\"all\", [\">\", [\"get\", \"y\"], 0], [\">\", [\"get\", \"z\"], 0]],\n * false\n * ],\n * [\"case\",\n * [\"==\", [\"typeof\", [\"get\", \"x\"], \"number\"]],\n * [\">\", [\"get\", \"x\"], 0],\n * false\n * ]\n * ]\n *\n * An alternative, possibly more direct approach would be to use type checks\n * in the conversion of each comparison operator, so that the converted version\n * of each individual ==, >=, etc. would mimic the legacy filter semantics. The\n * downside of this approach is that it can lead to many more type checks than\n * would otherwise be necessary: outside the context of an \"any\" expression,\n * bailing out due to a runtime type error (expression semantics) and returning\n * false (legacy filter semantics) are equivalent: they cause the filter to\n * produce a `false` result.\n */\nfunction convertFilter(filter, expectedTypes = {}) {\n if (isExpressionFilter(filter))\n return filter;\n if (!filter)\n return true;\n const legacyFilter = filter;\n const legacyOp = legacyFilter[0];\n if (filter.length <= 1)\n return (legacyOp !== 'any');\n switch (legacyOp) {\n case '==':\n case '!=':\n case '<':\n case '>':\n case '<=':\n case '>=': {\n const [, property, value] = filter;\n return convertComparisonOp(property, value, legacyOp, expectedTypes);\n }\n case 'any': {\n const [, ...conditions] = legacyFilter;\n const children = conditions.map((f) => {\n const types = {};\n const child = convertFilter(f, types);\n const typechecks = runtimeTypeChecks(types);\n return typechecks === true ? child : ['case', typechecks, child, false];\n });\n return ['any', ...children];\n }\n case 'all': {\n const [, ...conditions] = legacyFilter;\n const children = conditions.map(f => convertFilter(f, expectedTypes));\n return children.length > 1 ? ['all', ...children] : children[0];\n }\n case 'none': {\n const [, ...conditions] = legacyFilter;\n return ['!', convertFilter(['any', ...conditions], {})];\n }\n case 'in': {\n const [, property, ...values] = legacyFilter;\n return convertInOp(property, values);\n }\n case '!in': {\n const [, property, ...values] = legacyFilter;\n return convertInOp(property, values, true);\n }\n case 'has':\n return convertHasOp(legacyFilter[1]);\n case '!has':\n return ['!', convertHasOp(legacyFilter[1])];\n default:\n return true;\n }\n}\n// Given a set of feature properties and an expected type for each one,\n// construct an boolean expression that tests whether each property has the\n// right type.\n// E.g.: for {name: 'string', population: 'number'}, return\n// [ 'all',\n// ['==', ['typeof', ['get', 'name'], 'string']],\n// ['==', ['typeof', ['get', 'population'], 'number]]\n// ]\nfunction runtimeTypeChecks(expectedTypes) {\n const conditions = [];\n for (const property in expectedTypes) {\n const get = property === '$id' ? ['id'] : ['get', property];\n conditions.push(['==', ['typeof', get], expectedTypes[property]]);\n }\n if (conditions.length === 0)\n return true;\n if (conditions.length === 1)\n return conditions[0];\n return ['all', ...conditions];\n}\nfunction convertComparisonOp(property, value, op, expectedTypes) {\n let get;\n if (property === '$type') {\n return convertInOp('$type', [value], op === '!=');\n }\n else if (property === '$id') {\n get = ['id'];\n }\n else {\n get = ['get', property];\n }\n if (expectedTypes && value !== null) {\n const type = typeof value;\n expectedTypes[property] = type;\n }\n if (op === '==' && property !== '$id' && value === null) {\n return [\n 'all',\n ['has', property], // missing property != null for legacy filters\n ['==', get, null]\n ];\n }\n else if (op === '!=' && property !== '$id' && value === null) {\n return [\n 'any',\n ['!', ['has', property]], // missing property != null for legacy filters\n ['!=', get, null]\n ];\n }\n return [op, get, value];\n}\nfunction convertInOp(property, values, negate = false) {\n if (values.length === 0)\n return negate;\n let get;\n if (property === '$type') {\n const len = values.length;\n for (let i = 0; i < len; i++) {\n values.push(`Multi${values[i]}`);\n }\n get = ['geometry-type'];\n }\n else if (property === '$id') {\n get = ['id'];\n }\n else {\n get = ['get', property];\n }\n // Determine if the list of values to be searched is homogenously typed.\n // If so (and if the type is string or number), then we can use a\n // [match, input, [...values], true, false] construction rather than a\n // bunch of `==` tests.\n let uniformTypes = true;\n const type = typeof values[0];\n for (const value of values) {\n if (typeof value !== type) {\n uniformTypes = false;\n break;\n }\n }\n if (uniformTypes && (type === 'string' || type === 'number')) {\n // Match expressions must have unique values.\n const uniqueValues = values.sort().filter((v, i) => i === 0 || values[i - 1] !== v);\n return ['match', get, uniqueValues, !negate, negate];\n }\n if (negate) {\n return ['all', ...values.map(v => ['!=', get, v])];\n }\n else {\n return ['any', ...values.map(v => ['==', get, v])];\n }\n}\nfunction convertHasOp(property) {\n if (property === '$type') {\n return true;\n }\n else if (property === '$id') {\n return ['!=', ['id'], null];\n }\n else {\n return ['has', property];\n }\n}\n\nfunction convertLiteral(value) {\n return typeof value === 'object' ? ['literal', value] : value;\n}\nfunction convertFunction(parameters, propertySpec) {\n let stops = parameters.stops;\n if (!stops) {\n // identity function\n return convertIdentityFunction(parameters, propertySpec);\n }\n const zoomAndFeatureDependent = stops && typeof stops[0][0] === 'object';\n const featureDependent = zoomAndFeatureDependent || parameters.property !== undefined;\n const zoomDependent = zoomAndFeatureDependent || !featureDependent;\n stops = stops.map((stop) => {\n if (!featureDependent && propertySpec.tokens && typeof stop[1] === 'string') {\n return [stop[0], convertTokenString(stop[1])];\n }\n return [stop[0], convertLiteral(stop[1])];\n });\n if (zoomAndFeatureDependent) {\n return convertZoomAndPropertyFunction(parameters, propertySpec, stops);\n }\n else if (zoomDependent) {\n return convertZoomFunction(parameters, propertySpec, stops);\n }\n else {\n return convertPropertyFunction(parameters, propertySpec, stops);\n }\n}\nfunction convertIdentityFunction(parameters, propertySpec) {\n const get = ['get', parameters.property];\n if (parameters.default === undefined) {\n // By default, expressions for string-valued properties get coerced. To preserve\n // legacy function semantics, insert an explicit assertion instead.\n return propertySpec.type === 'string' ? ['string', get] : get;\n }\n else if (propertySpec.type === 'enum') {\n return [\n 'match',\n get,\n Object.keys(propertySpec.values),\n get,\n parameters.default\n ];\n }\n else {\n const expression = [propertySpec.type === 'color' ? 'to-color' : propertySpec.type, get, convertLiteral(parameters.default)];\n if (propertySpec.type === 'array') {\n expression.splice(1, 0, propertySpec.value, propertySpec.length || null);\n }\n return expression;\n }\n}\nfunction getInterpolateOperator(parameters) {\n switch (parameters.colorSpace) {\n case 'hcl': return 'interpolate-hcl';\n case 'lab': return 'interpolate-lab';\n default: return 'interpolate';\n }\n}\nfunction convertZoomAndPropertyFunction(parameters, propertySpec, stops) {\n const featureFunctionParameters = {};\n const featureFunctionStops = {};\n const zoomStops = [];\n for (let s = 0; s < stops.length; s++) {\n const stop = stops[s];\n const zoom = stop[0].zoom;\n if (featureFunctionParameters[zoom] === undefined) {\n featureFunctionParameters[zoom] = {\n zoom,\n type: parameters.type,\n property: parameters.property,\n default: parameters.default,\n };\n featureFunctionStops[zoom] = [];\n zoomStops.push(zoom);\n }\n featureFunctionStops[zoom].push([stop[0].value, stop[1]]);\n }\n // the interpolation type for the zoom dimension of a zoom-and-property\n // function is determined directly from the style property specification\n // for which it's being used: linear for interpolatable properties, step\n // otherwise.\n const functionType = getFunctionType({}, propertySpec);\n if (functionType === 'exponential') {\n const expression = [getInterpolateOperator(parameters), ['linear'], ['zoom']];\n for (const z of zoomStops) {\n const output = convertPropertyFunction(featureFunctionParameters[z], propertySpec, featureFunctionStops[z]);\n appendStopPair(expression, z, output, false);\n }\n return expression;\n }\n else {\n const expression = ['step', ['zoom']];\n for (const z of zoomStops) {\n const output = convertPropertyFunction(featureFunctionParameters[z], propertySpec, featureFunctionStops[z]);\n appendStopPair(expression, z, output, true);\n }\n fixupDegenerateStepCurve(expression);\n return expression;\n }\n}\nfunction coalesce(a, b) {\n if (a !== undefined)\n return a;\n if (b !== undefined)\n return b;\n}\nfunction getFallback(parameters, propertySpec) {\n const defaultValue = convertLiteral(coalesce(parameters.default, propertySpec.default));\n /*\n * Some fields with type: resolvedImage have an undefined default.\n * Because undefined is an invalid value for resolvedImage, set fallback to\n * an empty string instead of undefined to ensure output\n * passes validation.\n */\n if (defaultValue === undefined && propertySpec.type === 'resolvedImage') {\n return '';\n }\n return defaultValue;\n}\nfunction convertPropertyFunction(parameters, propertySpec, stops) {\n const type = getFunctionType(parameters, propertySpec);\n const get = ['get', parameters.property];\n if (type === 'categorical' && typeof stops[0][0] === 'boolean') {\n const expression = ['case'];\n for (const stop of stops) {\n expression.push(['==', get, stop[0]], stop[1]);\n }\n expression.push(getFallback(parameters, propertySpec));\n return expression;\n }\n else if (type === 'categorical') {\n const expression = ['match', get];\n for (const stop of stops) {\n appendStopPair(expression, stop[0], stop[1], false);\n }\n expression.push(getFallback(parameters, propertySpec));\n return expression;\n }\n else if (type === 'interval') {\n const expression = ['step', ['number', get]];\n for (const stop of stops) {\n appendStopPair(expression, stop[0], stop[1], true);\n }\n fixupDegenerateStepCurve(expression);\n return parameters.default === undefined ? expression : [\n 'case',\n ['==', ['typeof', get], 'number'],\n expression,\n convertLiteral(parameters.default)\n ];\n }\n else if (type === 'exponential') {\n const base = parameters.base !== undefined ? parameters.base : 1;\n const expression = [\n getInterpolateOperator(parameters),\n base === 1 ? ['linear'] : ['exponential', base],\n ['number', get]\n ];\n for (const stop of stops) {\n appendStopPair(expression, stop[0], stop[1], false);\n }\n return parameters.default === undefined ? expression : [\n 'case',\n ['==', ['typeof', get], 'number'],\n expression,\n convertLiteral(parameters.default)\n ];\n }\n else {\n throw new Error(`Unknown property function type ${type}`);\n }\n}\nfunction convertZoomFunction(parameters, propertySpec, stops, input = ['zoom']) {\n const type = getFunctionType(parameters, propertySpec);\n let expression;\n let isStep = false;\n if (type === 'interval') {\n expression = ['step', input];\n isStep = true;\n }\n else if (type === 'exponential') {\n const base = parameters.base !== undefined ? parameters.base : 1;\n expression = [getInterpolateOperator(parameters), base === 1 ? ['linear'] : ['exponential', base], input];\n }\n else {\n throw new Error(`Unknown zoom function type \"${type}\"`);\n }\n for (const stop of stops) {\n appendStopPair(expression, stop[0], stop[1], isStep);\n }\n fixupDegenerateStepCurve(expression);\n return expression;\n}\nfunction fixupDegenerateStepCurve(expression) {\n // degenerate step curve (i.e. a constant function): add a noop stop\n if (expression[0] === 'step' && expression.length === 3) {\n expression.push(0);\n expression.push(expression[3]);\n }\n}\nfunction appendStopPair(curve, input, output, isStep) {\n // Skip duplicate stop values. They were not validated for functions, but they are for expressions.\n // https://github.com/mapbox/mapbox-gl-js/issues/4107\n if (curve.length > 3 && input === curve[curve.length - 2]) {\n return;\n }\n // step curves don't get the first input value, as it is redundant.\n if (!(isStep && curve.length === 2)) {\n curve.push(input);\n }\n curve.push(output);\n}\nfunction getFunctionType(parameters, propertySpec) {\n if (parameters.type) {\n return parameters.type;\n }\n else {\n return propertySpec.expression.interpolated ? 'exponential' : 'interval';\n }\n}\n// \"String with {name} token\" => [\"concat\", \"String with \", [\"get\", \"name\"], \" token\"]\nfunction convertTokenString(s) {\n const result = ['concat'];\n const re = /{([^{}]+)}/g;\n let pos = 0;\n for (let match = re.exec(s); match !== null; match = re.exec(s)) {\n const literal = s.slice(pos, re.lastIndex - match[0].length);\n pos = re.lastIndex;\n if (literal.length > 0)\n result.push(literal);\n result.push(['get', match[1]]);\n }\n if (result.length === 1) {\n return s;\n }\n if (pos < s.length) {\n result.push(s.slice(pos));\n }\n else if (result.length === 2) {\n return ['to-string', result[1]];\n }\n return result;\n}\n\nfunction getPropertyReference(propertyName) {\n for (let i = 0; i < v8Spec.layout.length; i++) {\n for (const key in v8Spec[v8Spec.layout[i]]) {\n if (key === propertyName)\n return v8Spec[v8Spec.layout[i]][key];\n }\n }\n for (let i = 0; i < v8Spec.paint.length; i++) {\n for (const key in v8Spec[v8Spec.paint[i]]) {\n if (key === propertyName)\n return v8Spec[v8Spec.paint[i]][key];\n }\n }\n return null;\n}\nfunction eachSource(style, callback) {\n for (const k in style.sources) {\n callback(style.sources[k]);\n }\n}\nfunction eachLayer(style, callback) {\n for (const layer of style.layers) {\n callback(layer);\n }\n}\nfunction eachProperty(style, options, callback) {\n function inner(layer, propertyType) {\n const properties = layer[propertyType];\n if (!properties)\n return;\n Object.keys(properties).forEach((key) => {\n callback({\n path: [layer.id, propertyType, key],\n key,\n value: properties[key],\n reference: getPropertyReference(key),\n set(x) {\n properties[key] = x;\n }\n });\n });\n }\n eachLayer(style, (layer) => {\n if (options.paint) {\n inner(layer, 'paint');\n }\n if (options.layout) {\n inner(layer, 'layout');\n }\n });\n}\n\nfunction stringify$1(obj) {\n const type = typeof obj;\n if (type === 'number' || type === 'boolean' || type === 'string' || obj === undefined || obj === null)\n return JSON.stringify(obj);\n if (Array.isArray(obj)) {\n let str = '[';\n for (const val of obj) {\n str += `${stringify$1(val)},`;\n }\n return `${str}]`;\n }\n const keys = Object.keys(obj).sort();\n let str = '{';\n for (let i = 0; i < keys.length; i++) {\n str += `${JSON.stringify(keys[i])}:${stringify$1(obj[keys[i]])},`;\n }\n return `${str}}`;\n}\nfunction getKey(layer) {\n let key = '';\n for (const k of refProperties) {\n key += `/${stringify$1(layer[k])}`;\n }\n return key;\n}\n/**\n * Given an array of layers, return an array of arrays of layers where all\n * layers in each group have identical layout-affecting properties. These\n * are the properties that were formerly used by explicit `ref` mechanism\n * for layers: 'type', 'source', 'source-layer', 'minzoom', 'maxzoom',\n * 'filter', and 'layout'.\n *\n * The input is not modified. The output layers are references to the\n * input layers.\n *\n * @private\n * @param {Array} layers\n * @param {Object} [cachedKeys] - an object to keep already calculated keys.\n * @returns {Array>}\n */\nfunction groupByLayout(layers, cachedKeys) {\n const groups = {};\n for (let i = 0; i < layers.length; i++) {\n const k = (cachedKeys && cachedKeys[layers[i].id]) || getKey(layers[i]);\n // update the cache if there is one\n if (cachedKeys)\n cachedKeys[layers[i].id] = k;\n let group = groups[k];\n if (!group) {\n group = groups[k] = [];\n }\n group.push(layers[i]);\n }\n const result = [];\n for (const k in groups) {\n result.push(groups[k]);\n }\n return result;\n}\n\nfunction emptyStyle() {\n const style = {};\n const version = v8Spec['$version'];\n for (const styleKey in v8Spec['$root']) {\n const specification = v8Spec['$root'][styleKey];\n if (specification.required) {\n let value = null;\n if (styleKey === 'version') {\n value = version;\n }\n else {\n if (specification.type === 'array') {\n value = [];\n }\n else {\n value = {};\n }\n }\n if (value != null) {\n style[styleKey] = value;\n }\n }\n }\n return style;\n}\n\nfunction validateConstants(options) {\n const key = options.key;\n const constants = options.value;\n if (constants) {\n return [new ValidationError(key, constants, 'constants have been deprecated as of v8')];\n }\n else {\n return [];\n }\n}\n\n// Turn jsonlint-lines-primitives objects into primitive objects\nfunction unbundle(value) {\n if (value instanceof Number || value instanceof String || value instanceof Boolean) {\n return value.valueOf();\n }\n else {\n return value;\n }\n}\nfunction deepUnbundle(value) {\n if (Array.isArray(value)) {\n return value.map(deepUnbundle);\n }\n else if (value instanceof Object && !(value instanceof Number || value instanceof String || value instanceof Boolean)) {\n const unbundledValue = {};\n for (const key in value) {\n unbundledValue[key] = deepUnbundle(value[key]);\n }\n return unbundledValue;\n }\n return unbundle(value);\n}\n\nfunction validateObject(options) {\n const key = options.key;\n const object = options.value;\n const elementSpecs = options.valueSpec || {};\n const elementValidators = options.objectElementValidators || {};\n const style = options.style;\n const styleSpec = options.styleSpec;\n const validateSpec = options.validateSpec;\n let errors = [];\n const type = getType(object);\n if (type !== 'object') {\n return [new ValidationError(key, object, `object expected, ${type} found`)];\n }\n for (const objectKey in object) {\n const elementSpecKey = objectKey.split('.')[0]; // treat 'paint.*' as 'paint'\n const elementSpec = elementSpecs[elementSpecKey] || elementSpecs['*'];\n let validateElement;\n if (elementValidators[elementSpecKey]) {\n validateElement = elementValidators[elementSpecKey];\n }\n else if (elementSpecs[elementSpecKey]) {\n validateElement = validateSpec;\n }\n else if (elementValidators['*']) {\n validateElement = elementValidators['*'];\n }\n else if (elementSpecs['*']) {\n validateElement = validateSpec;\n }\n else {\n errors.push(new ValidationError(key, object[objectKey], `unknown property \"${objectKey}\"`));\n continue;\n }\n errors = errors.concat(validateElement({\n key: (key ? `${key}.` : key) + objectKey,\n value: object[objectKey],\n valueSpec: elementSpec,\n style,\n styleSpec,\n object,\n objectKey,\n validateSpec,\n }, object));\n }\n for (const elementSpecKey in elementSpecs) {\n // Don't check `required` when there's a custom validator for that property.\n if (elementValidators[elementSpecKey]) {\n continue;\n }\n if (elementSpecs[elementSpecKey].required && elementSpecs[elementSpecKey]['default'] === undefined && object[elementSpecKey] === undefined) {\n errors.push(new ValidationError(key, object, `missing required property \"${elementSpecKey}\"`));\n }\n }\n return errors;\n}\n\nfunction validateArray(options) {\n const array = options.value;\n const arraySpec = options.valueSpec;\n const validateSpec = options.validateSpec;\n const style = options.style;\n const styleSpec = options.styleSpec;\n const key = options.key;\n const validateArrayElement = options.arrayElementValidator || validateSpec;\n if (getType(array) !== 'array') {\n return [new ValidationError(key, array, `array expected, ${getType(array)} found`)];\n }\n if (arraySpec.length && array.length !== arraySpec.length) {\n return [new ValidationError(key, array, `array length ${arraySpec.length} expected, length ${array.length} found`)];\n }\n if (arraySpec['min-length'] && array.length < arraySpec['min-length']) {\n return [new ValidationError(key, array, `array length at least ${arraySpec['min-length']} expected, length ${array.length} found`)];\n }\n let arrayElementSpec = {\n 'type': arraySpec.value,\n 'values': arraySpec.values\n };\n if (styleSpec.$version < 7) {\n arrayElementSpec['function'] = arraySpec.function;\n }\n if (getType(arraySpec.value) === 'object') {\n arrayElementSpec = arraySpec.value;\n }\n let errors = [];\n for (let i = 0; i < array.length; i++) {\n errors = errors.concat(validateArrayElement({\n array,\n arrayIndex: i,\n value: array[i],\n valueSpec: arrayElementSpec,\n validateSpec: options.validateSpec,\n style,\n styleSpec,\n key: `${key}[${i}]`\n }));\n }\n return errors;\n}\n\nfunction validateNumber(options) {\n const key = options.key;\n const value = options.value;\n const valueSpec = options.valueSpec;\n let type = getType(value);\n if (type === 'number' && value !== value) {\n type = 'NaN';\n }\n if (type !== 'number') {\n return [new ValidationError(key, value, `number expected, ${type} found`)];\n }\n if ('minimum' in valueSpec && value < valueSpec.minimum) {\n return [new ValidationError(key, value, `${value} is less than the minimum value ${valueSpec.minimum}`)];\n }\n if ('maximum' in valueSpec && value > valueSpec.maximum) {\n return [new ValidationError(key, value, `${value} is greater than the maximum value ${valueSpec.maximum}`)];\n }\n return [];\n}\n\nfunction validateFunction(options) {\n const functionValueSpec = options.valueSpec;\n const functionType = unbundle(options.value.type);\n let stopKeyType;\n let stopDomainValues = {};\n let previousStopDomainValue;\n let previousStopDomainZoom;\n const isZoomFunction = functionType !== 'categorical' && options.value.property === undefined;\n const isPropertyFunction = !isZoomFunction;\n const isZoomAndPropertyFunction = getType(options.value.stops) === 'array' &&\n getType(options.value.stops[0]) === 'array' &&\n getType(options.value.stops[0][0]) === 'object';\n const errors = validateObject({\n key: options.key,\n value: options.value,\n valueSpec: options.styleSpec.function,\n validateSpec: options.validateSpec,\n style: options.style,\n styleSpec: options.styleSpec,\n objectElementValidators: {\n stops: validateFunctionStops,\n default: validateFunctionDefault\n }\n });\n if (functionType === 'identity' && isZoomFunction) {\n errors.push(new ValidationError(options.key, options.value, 'missing required property \"property\"'));\n }\n if (functionType !== 'identity' && !options.value.stops) {\n errors.push(new ValidationError(options.key, options.value, 'missing required property \"stops\"'));\n }\n if (functionType === 'exponential' && options.valueSpec.expression && !supportsInterpolation(options.valueSpec)) {\n errors.push(new ValidationError(options.key, options.value, 'exponential functions not supported'));\n }\n if (options.styleSpec.$version >= 8) {\n if (isPropertyFunction && !supportsPropertyExpression(options.valueSpec)) {\n errors.push(new ValidationError(options.key, options.value, 'property functions not supported'));\n }\n else if (isZoomFunction && !supportsZoomExpression(options.valueSpec)) {\n errors.push(new ValidationError(options.key, options.value, 'zoom functions not supported'));\n }\n }\n if ((functionType === 'categorical' || isZoomAndPropertyFunction) && options.value.property === undefined) {\n errors.push(new ValidationError(options.key, options.value, '\"property\" property is required'));\n }\n return errors;\n function validateFunctionStops(options) {\n if (functionType === 'identity') {\n return [new ValidationError(options.key, options.value, 'identity function may not have a \"stops\" property')];\n }\n let errors = [];\n const value = options.value;\n errors = errors.concat(validateArray({\n key: options.key,\n value,\n valueSpec: options.valueSpec,\n validateSpec: options.validateSpec,\n style: options.style,\n styleSpec: options.styleSpec,\n arrayElementValidator: validateFunctionStop\n }));\n if (getType(value) === 'array' && value.length === 0) {\n errors.push(new ValidationError(options.key, value, 'array must have at least one stop'));\n }\n return errors;\n }\n function validateFunctionStop(options) {\n let errors = [];\n const value = options.value;\n const key = options.key;\n if (getType(value) !== 'array') {\n return [new ValidationError(key, value, `array expected, ${getType(value)} found`)];\n }\n if (value.length !== 2) {\n return [new ValidationError(key, value, `array length 2 expected, length ${value.length} found`)];\n }\n if (isZoomAndPropertyFunction) {\n if (getType(value[0]) !== 'object') {\n return [new ValidationError(key, value, `object expected, ${getType(value[0])} found`)];\n }\n if (value[0].zoom === undefined) {\n return [new ValidationError(key, value, 'object stop key must have zoom')];\n }\n if (value[0].value === undefined) {\n return [new ValidationError(key, value, 'object stop key must have value')];\n }\n if (previousStopDomainZoom && previousStopDomainZoom > unbundle(value[0].zoom)) {\n return [new ValidationError(key, value[0].zoom, 'stop zoom values must appear in ascending order')];\n }\n if (unbundle(value[0].zoom) !== previousStopDomainZoom) {\n previousStopDomainZoom = unbundle(value[0].zoom);\n previousStopDomainValue = undefined;\n stopDomainValues = {};\n }\n errors = errors.concat(validateObject({\n key: `${key}[0]`,\n value: value[0],\n valueSpec: { zoom: {} },\n validateSpec: options.validateSpec,\n style: options.style,\n styleSpec: options.styleSpec,\n objectElementValidators: { zoom: validateNumber, value: validateStopDomainValue }\n }));\n }\n else {\n errors = errors.concat(validateStopDomainValue({\n key: `${key}[0]`,\n value: value[0],\n valueSpec: {},\n validateSpec: options.validateSpec,\n style: options.style,\n styleSpec: options.styleSpec\n }, value));\n }\n if (isExpression(deepUnbundle(value[1]))) {\n return errors.concat([new ValidationError(`${key}[1]`, value[1], 'expressions are not allowed in function stops.')]);\n }\n return errors.concat(options.validateSpec({\n key: `${key}[1]`,\n value: value[1],\n valueSpec: functionValueSpec,\n validateSpec: options.validateSpec,\n style: options.style,\n styleSpec: options.styleSpec\n }));\n }\n function validateStopDomainValue(options, stop) {\n const type = getType(options.value);\n const value = unbundle(options.value);\n const reportValue = options.value !== null ? options.value : stop;\n if (!stopKeyType) {\n stopKeyType = type;\n }\n else if (type !== stopKeyType) {\n return [new ValidationError(options.key, reportValue, `${type} stop domain type must match previous stop domain type ${stopKeyType}`)];\n }\n if (type !== 'number' && type !== 'string' && type !== 'boolean') {\n return [new ValidationError(options.key, reportValue, 'stop domain value must be a number, string, or boolean')];\n }\n if (type !== 'number' && functionType !== 'categorical') {\n let message = `number expected, ${type} found`;\n if (supportsPropertyExpression(functionValueSpec) && functionType === undefined) {\n message += '\\nIf you intended to use a categorical function, specify `\"type\": \"categorical\"`.';\n }\n return [new ValidationError(options.key, reportValue, message)];\n }\n if (functionType === 'categorical' && type === 'number' && (!isFinite(value) || Math.floor(value) !== value)) {\n return [new ValidationError(options.key, reportValue, `integer expected, found ${value}`)];\n }\n if (functionType !== 'categorical' && type === 'number' && previousStopDomainValue !== undefined && value < previousStopDomainValue) {\n return [new ValidationError(options.key, reportValue, 'stop domain values must appear in ascending order')];\n }\n else {\n previousStopDomainValue = value;\n }\n if (functionType === 'categorical' && value in stopDomainValues) {\n return [new ValidationError(options.key, reportValue, 'stop domain values must be unique')];\n }\n else {\n stopDomainValues[value] = true;\n }\n return [];\n }\n function validateFunctionDefault(options) {\n return options.validateSpec({\n key: options.key,\n value: options.value,\n valueSpec: functionValueSpec,\n validateSpec: options.validateSpec,\n style: options.style,\n styleSpec: options.styleSpec\n });\n }\n}\n\nfunction validateExpression(options) {\n const expression = (options.expressionContext === 'property' ? createPropertyExpression : createExpression)(deepUnbundle(options.value), options.valueSpec);\n if (expression.result === 'error') {\n return expression.value.map((error) => {\n return new ValidationError(`${options.key}${error.key}`, options.value, error.message);\n });\n }\n const expressionObj = expression.value.expression || expression.value._styleExpression.expression;\n if (options.expressionContext === 'property' && (options.propertyKey === 'text-font') &&\n !expressionObj.outputDefined()) {\n return [new ValidationError(options.key, options.value, `Invalid data expression for \"${options.propertyKey}\". Output values must be contained as literals within the expression.`)];\n }\n if (options.expressionContext === 'property' && options.propertyType === 'layout' &&\n (!isStateConstant(expressionObj))) {\n return [new ValidationError(options.key, options.value, '\"feature-state\" data expressions are not supported with layout properties.')];\n }\n if (options.expressionContext === 'filter' && !isStateConstant(expressionObj)) {\n return [new ValidationError(options.key, options.value, '\"feature-state\" data expressions are not supported with filters.')];\n }\n if (options.expressionContext && options.expressionContext.indexOf('cluster') === 0) {\n if (!isGlobalPropertyConstant(expressionObj, ['zoom', 'feature-state'])) {\n return [new ValidationError(options.key, options.value, '\"zoom\" and \"feature-state\" expressions are not supported with cluster properties.')];\n }\n if (options.expressionContext === 'cluster-initial' && !isFeatureConstant(expressionObj)) {\n return [new ValidationError(options.key, options.value, 'Feature data expressions are not supported with initial expression part of cluster properties.')];\n }\n }\n return [];\n}\n\nfunction validateBoolean(options) {\n const value = options.value;\n const key = options.key;\n const type = getType(value);\n if (type !== 'boolean') {\n return [new ValidationError(key, value, `boolean expected, ${type} found`)];\n }\n return [];\n}\n\nfunction validateColor(options) {\n const key = options.key;\n const value = options.value;\n const type = getType(value);\n if (type !== 'string') {\n return [new ValidationError(key, value, `color expected, ${type} found`)];\n }\n if (!Color.parse(String(value))) { // cast String object to string primitive\n return [new ValidationError(key, value, `color expected, \"${value}\" found`)];\n }\n return [];\n}\n\nfunction validateEnum(options) {\n const key = options.key;\n const value = options.value;\n const valueSpec = options.valueSpec;\n const errors = [];\n if (Array.isArray(valueSpec.values)) { // <=v7\n if (valueSpec.values.indexOf(unbundle(value)) === -1) {\n errors.push(new ValidationError(key, value, `expected one of [${valueSpec.values.join(', ')}], ${JSON.stringify(value)} found`));\n }\n }\n else { // >=v8\n if (Object.keys(valueSpec.values).indexOf(unbundle(value)) === -1) {\n errors.push(new ValidationError(key, value, `expected one of [${Object.keys(valueSpec.values).join(', ')}], ${JSON.stringify(value)} found`));\n }\n }\n return errors;\n}\n\nfunction validateFilter(options) {\n if (isExpressionFilter(deepUnbundle(options.value))) {\n return validateExpression(extendBy({}, options, {\n expressionContext: 'filter',\n valueSpec: { value: 'boolean' }\n }));\n }\n else {\n return validateNonExpressionFilter(options);\n }\n}\nfunction validateNonExpressionFilter(options) {\n const value = options.value;\n const key = options.key;\n if (getType(value) !== 'array') {\n return [new ValidationError(key, value, `array expected, ${getType(value)} found`)];\n }\n const styleSpec = options.styleSpec;\n let type;\n let errors = [];\n if (value.length < 1) {\n return [new ValidationError(key, value, 'filter array must have at least 1 element')];\n }\n errors = errors.concat(validateEnum({\n key: `${key}[0]`,\n value: value[0],\n valueSpec: styleSpec.filter_operator,\n style: options.style,\n styleSpec: options.styleSpec\n }));\n switch (unbundle(value[0])) {\n case '<':\n case '<=':\n case '>':\n case '>=':\n if (value.length >= 2 && unbundle(value[1]) === '$type') {\n errors.push(new ValidationError(key, value, `\"$type\" cannot be use with operator \"${value[0]}\"`));\n }\n /* falls through */\n case '==':\n case '!=':\n if (value.length !== 3) {\n errors.push(new ValidationError(key, value, `filter array for operator \"${value[0]}\" must have 3 elements`));\n }\n /* falls through */\n case 'in':\n case '!in':\n if (value.length >= 2) {\n type = getType(value[1]);\n if (type !== 'string') {\n errors.push(new ValidationError(`${key}[1]`, value[1], `string expected, ${type} found`));\n }\n }\n for (let i = 2; i < value.length; i++) {\n type = getType(value[i]);\n if (unbundle(value[1]) === '$type') {\n errors = errors.concat(validateEnum({\n key: `${key}[${i}]`,\n value: value[i],\n valueSpec: styleSpec.geometry_type,\n style: options.style,\n styleSpec: options.styleSpec\n }));\n }\n else if (type !== 'string' && type !== 'number' && type !== 'boolean') {\n errors.push(new ValidationError(`${key}[${i}]`, value[i], `string, number, or boolean expected, ${type} found`));\n }\n }\n break;\n case 'any':\n case 'all':\n case 'none':\n for (let i = 1; i < value.length; i++) {\n errors = errors.concat(validateNonExpressionFilter({\n key: `${key}[${i}]`,\n value: value[i],\n style: options.style,\n styleSpec: options.styleSpec\n }));\n }\n break;\n case 'has':\n case '!has':\n type = getType(value[1]);\n if (value.length !== 2) {\n errors.push(new ValidationError(key, value, `filter array for \"${value[0]}\" operator must have 2 elements`));\n }\n else if (type !== 'string') {\n errors.push(new ValidationError(`${key}[1]`, value[1], `string expected, ${type} found`));\n }\n break;\n }\n return errors;\n}\n\nfunction validateProperty(options, propertyType) {\n const key = options.key;\n const validateSpec = options.validateSpec;\n const style = options.style;\n const styleSpec = options.styleSpec;\n const value = options.value;\n const propertyKey = options.objectKey;\n const layerSpec = styleSpec[`${propertyType}_${options.layerType}`];\n if (!layerSpec)\n return [];\n const transitionMatch = propertyKey.match(/^(.*)-transition$/);\n if (propertyType === 'paint' && transitionMatch && layerSpec[transitionMatch[1]] && layerSpec[transitionMatch[1]].transition) {\n return validateSpec({\n key,\n value,\n valueSpec: styleSpec.transition,\n style,\n styleSpec\n });\n }\n const valueSpec = options.valueSpec || layerSpec[propertyKey];\n if (!valueSpec) {\n return [new ValidationError(key, value, `unknown property \"${propertyKey}\"`)];\n }\n let tokenMatch;\n if (getType(value) === 'string' && supportsPropertyExpression(valueSpec) && !valueSpec.tokens && (tokenMatch = /^{([^}]+)}$/.exec(value))) {\n return [new ValidationError(key, value, `\"${propertyKey}\" does not support interpolation syntax\\n` +\n `Use an identity property function instead: \\`{ \"type\": \"identity\", \"property\": ${JSON.stringify(tokenMatch[1])} }\\`.`)];\n }\n const errors = [];\n if (options.layerType === 'symbol') {\n if (propertyKey === 'text-field' && style && !style.glyphs) {\n errors.push(new ValidationError(key, value, 'use of \"text-field\" requires a style \"glyphs\" property'));\n }\n if (propertyKey === 'text-font' && isFunction$1(deepUnbundle(value)) && unbundle(value.type) === 'identity') {\n errors.push(new ValidationError(key, value, '\"text-font\" does not support identity functions'));\n }\n }\n return errors.concat(validateSpec({\n key: options.key,\n value,\n valueSpec,\n style,\n styleSpec,\n expressionContext: 'property',\n propertyType,\n propertyKey\n }));\n}\n\nfunction validatePaintProperty(options) {\n return validateProperty(options, 'paint');\n}\n\nfunction validateLayoutProperty(options) {\n return validateProperty(options, 'layout');\n}\n\nfunction validateLayer(options) {\n let errors = [];\n const layer = options.value;\n const key = options.key;\n const style = options.style;\n const styleSpec = options.styleSpec;\n if (!layer.type && !layer.ref) {\n errors.push(new ValidationError(key, layer, 'either \"type\" or \"ref\" is required'));\n }\n let type = unbundle(layer.type);\n const ref = unbundle(layer.ref);\n if (layer.id) {\n const layerId = unbundle(layer.id);\n for (let i = 0; i < options.arrayIndex; i++) {\n const otherLayer = style.layers[i];\n if (unbundle(otherLayer.id) === layerId) {\n errors.push(new ValidationError(key, layer.id, `duplicate layer id \"${layer.id}\", previously used at line ${otherLayer.id.__line__}`));\n }\n }\n }\n if ('ref' in layer) {\n ['type', 'source', 'source-layer', 'filter', 'layout'].forEach((p) => {\n if (p in layer) {\n errors.push(new ValidationError(key, layer[p], `\"${p}\" is prohibited for ref layers`));\n }\n });\n let parent;\n style.layers.forEach((layer) => {\n if (unbundle(layer.id) === ref)\n parent = layer;\n });\n if (!parent) {\n errors.push(new ValidationError(key, layer.ref, `ref layer \"${ref}\" not found`));\n }\n else if (parent.ref) {\n errors.push(new ValidationError(key, layer.ref, 'ref cannot reference another ref layer'));\n }\n else {\n type = unbundle(parent.type);\n }\n }\n else if (type !== 'background') {\n if (!layer.source) {\n errors.push(new ValidationError(key, layer, 'missing required property \"source\"'));\n }\n else {\n const source = style.sources && style.sources[layer.source];\n const sourceType = source && unbundle(source.type);\n if (!source) {\n errors.push(new ValidationError(key, layer.source, `source \"${layer.source}\" not found`));\n }\n else if (sourceType === 'vector' && type === 'raster') {\n errors.push(new ValidationError(key, layer.source, `layer \"${layer.id}\" requires a raster source`));\n }\n else if (sourceType !== 'raster-dem' && type === 'hillshade') {\n errors.push(new ValidationError(key, layer.source, `layer \"${layer.id}\" requires a raster-dem source`));\n }\n else if (sourceType === 'raster' && type !== 'raster') {\n errors.push(new ValidationError(key, layer.source, `layer \"${layer.id}\" requires a vector source`));\n }\n else if (sourceType === 'vector' && !layer['source-layer']) {\n errors.push(new ValidationError(key, layer, `layer \"${layer.id}\" must specify a \"source-layer\"`));\n }\n else if (sourceType === 'raster-dem' && type !== 'hillshade') {\n errors.push(new ValidationError(key, layer.source, 'raster-dem source can only be used with layer type \\'hillshade\\'.'));\n }\n else if (type === 'line' && layer.paint && layer.paint['line-gradient'] &&\n (sourceType !== 'geojson' || !source.lineMetrics)) {\n errors.push(new ValidationError(key, layer, `layer \"${layer.id}\" specifies a line-gradient, which requires a GeoJSON source with \\`lineMetrics\\` enabled.`));\n }\n }\n }\n errors = errors.concat(validateObject({\n key,\n value: layer,\n valueSpec: styleSpec.layer,\n style: options.style,\n styleSpec: options.styleSpec,\n validateSpec: options.validateSpec,\n objectElementValidators: {\n '*'() {\n return [];\n },\n // We don't want to enforce the spec's `\"requires\": true` for backward compatibility with refs;\n // the actual requirement is validated above. See https://github.com/mapbox/mapbox-gl-js/issues/5772.\n type() {\n return options.validateSpec({\n key: `${key}.type`,\n value: layer.type,\n valueSpec: styleSpec.layer.type,\n style: options.style,\n styleSpec: options.styleSpec,\n validateSpec: options.validateSpec,\n object: layer,\n objectKey: 'type'\n });\n },\n filter: validateFilter,\n layout(options) {\n return validateObject({\n layer,\n key: options.key,\n value: options.value,\n style: options.style,\n styleSpec: options.styleSpec,\n validateSpec: options.validateSpec,\n objectElementValidators: {\n '*'(options) {\n return validateLayoutProperty(extendBy({ layerType: type }, options));\n }\n }\n });\n },\n paint(options) {\n return validateObject({\n layer,\n key: options.key,\n value: options.value,\n style: options.style,\n styleSpec: options.styleSpec,\n validateSpec: options.validateSpec,\n objectElementValidators: {\n '*'(options) {\n return validatePaintProperty(extendBy({ layerType: type }, options));\n }\n }\n });\n }\n }\n }));\n return errors;\n}\n\nfunction validateString(options) {\n const value = options.value;\n const key = options.key;\n const type = getType(value);\n if (type !== 'string') {\n return [new ValidationError(key, value, `string expected, ${type} found`)];\n }\n return [];\n}\n\nfunction validateRasterDEMSource(options) {\n var _a;\n const sourceName = (_a = options.sourceName) !== null && _a !== void 0 ? _a : '';\n const rasterDEM = options.value;\n const styleSpec = options.styleSpec;\n const rasterDEMSpec = styleSpec.source_raster_dem;\n const style = options.style;\n let errors = [];\n const rootType = getType(rasterDEM);\n if (rasterDEM === undefined) {\n return errors;\n }\n else if (rootType !== 'object') {\n errors.push(new ValidationError('source_raster_dem', rasterDEM, `object expected, ${rootType} found`));\n return errors;\n }\n const encoding = unbundle(rasterDEM.encoding);\n const isCustomEncoding = encoding === 'custom';\n const customEncodingKeys = ['redFactor', 'greenFactor', 'blueFactor', 'baseShift'];\n const encodingName = options.value.encoding ? `\"${options.value.encoding}\"` : 'Default';\n for (const key in rasterDEM) {\n if (!isCustomEncoding && customEncodingKeys.includes(key)) {\n errors.push(new ValidationError(key, rasterDEM[key], `In \"${sourceName}\": \"${key}\" is only valid when \"encoding\" is set to \"custom\". ${encodingName} encoding found`));\n }\n else if (rasterDEMSpec[key]) {\n errors = errors.concat(options.validateSpec({\n key,\n value: rasterDEM[key],\n valueSpec: rasterDEMSpec[key],\n validateSpec: options.validateSpec,\n style,\n styleSpec\n }));\n }\n else {\n errors.push(new ValidationError(key, rasterDEM[key], `unknown property \"${key}\"`));\n }\n }\n return errors;\n}\n\nconst objectElementValidators = {\n promoteId: validatePromoteId\n};\nfunction validateSource(options) {\n const value = options.value;\n const key = options.key;\n const styleSpec = options.styleSpec;\n const style = options.style;\n const validateSpec = options.validateSpec;\n if (!value.type) {\n return [new ValidationError(key, value, '\"type\" is required')];\n }\n const type = unbundle(value.type);\n let errors;\n switch (type) {\n case 'vector':\n case 'raster':\n errors = validateObject({\n key,\n value,\n valueSpec: styleSpec[`source_${type.replace('-', '_')}`],\n style: options.style,\n styleSpec,\n objectElementValidators,\n validateSpec,\n });\n return errors;\n case 'raster-dem':\n errors = validateRasterDEMSource({\n sourceName: key,\n value,\n style: options.style,\n styleSpec,\n validateSpec,\n });\n return errors;\n case 'geojson':\n errors = validateObject({\n key,\n value,\n valueSpec: styleSpec.source_geojson,\n style,\n styleSpec,\n validateSpec,\n objectElementValidators\n });\n if (value.cluster) {\n for (const prop in value.clusterProperties) {\n const [operator, mapExpr] = value.clusterProperties[prop];\n const reduceExpr = typeof operator === 'string' ? [operator, ['accumulated'], ['get', prop]] : operator;\n errors.push(...validateExpression({\n key: `${key}.${prop}.map`,\n value: mapExpr,\n validateSpec,\n expressionContext: 'cluster-map'\n }));\n errors.push(...validateExpression({\n key: `${key}.${prop}.reduce`,\n value: reduceExpr,\n validateSpec,\n expressionContext: 'cluster-reduce'\n }));\n }\n }\n return errors;\n case 'video':\n return validateObject({\n key,\n value,\n valueSpec: styleSpec.source_video,\n style,\n validateSpec,\n styleSpec\n });\n case 'image':\n return validateObject({\n key,\n value,\n valueSpec: styleSpec.source_image,\n style,\n validateSpec,\n styleSpec\n });\n case 'canvas':\n return [new ValidationError(key, null, 'Please use runtime APIs to add canvas sources, rather than including them in stylesheets.', 'source.canvas')];\n default:\n return validateEnum({\n key: `${key}.type`,\n value: value.type,\n valueSpec: { values: ['vector', 'raster', 'raster-dem', 'geojson', 'video', 'image'] },\n style,\n validateSpec,\n styleSpec\n });\n }\n}\nfunction validatePromoteId({ key, value }) {\n if (getType(value) === 'string') {\n return validateString({ key, value });\n }\n else {\n const errors = [];\n for (const prop in value) {\n errors.push(...validateString({ key: `${key}.${prop}`, value: value[prop] }));\n }\n return errors;\n }\n}\n\nfunction validateLight(options) {\n const light = options.value;\n const styleSpec = options.styleSpec;\n const lightSpec = styleSpec.light;\n const style = options.style;\n let errors = [];\n const rootType = getType(light);\n if (light === undefined) {\n return errors;\n }\n else if (rootType !== 'object') {\n errors = errors.concat([new ValidationError('light', light, `object expected, ${rootType} found`)]);\n return errors;\n }\n for (const key in light) {\n const transitionMatch = key.match(/^(.*)-transition$/);\n if (transitionMatch && lightSpec[transitionMatch[1]] && lightSpec[transitionMatch[1]].transition) {\n errors = errors.concat(options.validateSpec({\n key,\n value: light[key],\n valueSpec: styleSpec.transition,\n validateSpec: options.validateSpec,\n style,\n styleSpec\n }));\n }\n else if (lightSpec[key]) {\n errors = errors.concat(options.validateSpec({\n key,\n value: light[key],\n valueSpec: lightSpec[key],\n validateSpec: options.validateSpec,\n style,\n styleSpec\n }));\n }\n else {\n errors = errors.concat([new ValidationError(key, light[key], `unknown property \"${key}\"`)]);\n }\n }\n return errors;\n}\n\nfunction validateSky(options) {\n const sky = options.value;\n const styleSpec = options.styleSpec;\n const skySpec = styleSpec.sky;\n const style = options.style;\n const rootType = getType(sky);\n if (sky === undefined) {\n return [];\n }\n else if (rootType !== 'object') {\n return [new ValidationError('sky', sky, `object expected, ${rootType} found`)];\n }\n let errors = [];\n for (const key in sky) {\n if (skySpec[key]) {\n errors = errors.concat(options.validateSpec({\n key,\n value: sky[key],\n valueSpec: skySpec[key],\n style,\n styleSpec\n }));\n }\n else {\n errors = errors.concat([new ValidationError(key, sky[key], `unknown property \"${key}\"`)]);\n }\n }\n return errors;\n}\n\nfunction validateTerrain(options) {\n const terrain = options.value;\n const styleSpec = options.styleSpec;\n const terrainSpec = styleSpec.terrain;\n const style = options.style;\n let errors = [];\n const rootType = getType(terrain);\n if (terrain === undefined) {\n return errors;\n }\n else if (rootType !== 'object') {\n errors = errors.concat([new ValidationError('terrain', terrain, `object expected, ${rootType} found`)]);\n return errors;\n }\n for (const key in terrain) {\n if (terrainSpec[key]) {\n errors = errors.concat(options.validateSpec({\n key,\n value: terrain[key],\n valueSpec: terrainSpec[key],\n validateSpec: options.validateSpec,\n style,\n styleSpec\n }));\n }\n else {\n errors = errors.concat([new ValidationError(key, terrain[key], `unknown property \"${key}\"`)]);\n }\n }\n return errors;\n}\n\nfunction validateFormatted(options) {\n if (validateString(options).length === 0) {\n return [];\n }\n return validateExpression(options);\n}\n\nfunction validateImage(options) {\n if (validateString(options).length === 0) {\n return [];\n }\n return validateExpression(options);\n}\n\nfunction validatePadding(options) {\n const key = options.key;\n const value = options.value;\n const type = getType(value);\n if (type === 'array') {\n if (value.length < 1 || value.length > 4) {\n return [new ValidationError(key, value, `padding requires 1 to 4 values; ${value.length} values found`)];\n }\n const arrayElementSpec = {\n type: 'number'\n };\n let errors = [];\n for (let i = 0; i < value.length; i++) {\n errors = errors.concat(options.validateSpec({\n key: `${key}[${i}]`,\n value: value[i],\n validateSpec: options.validateSpec,\n valueSpec: arrayElementSpec\n }));\n }\n return errors;\n }\n else {\n return validateNumber({\n key,\n value,\n valueSpec: {}\n });\n }\n}\n\nfunction validateVariableAnchorOffsetCollection(options) {\n const key = options.key;\n const value = options.value;\n const type = getType(value);\n const styleSpec = options.styleSpec;\n if (type !== 'array' || value.length < 1 || value.length % 2 !== 0) {\n return [new ValidationError(key, value, 'variableAnchorOffsetCollection requires a non-empty array of even length')];\n }\n let errors = [];\n for (let i = 0; i < value.length; i += 2) {\n // Elements in even positions should be values from text-anchor enum\n errors = errors.concat(validateEnum({\n key: `${key}[${i}]`,\n value: value[i],\n valueSpec: styleSpec['layout_symbol']['text-anchor']\n }));\n // Elements in odd positions should be points (2-element numeric arrays)\n errors = errors.concat(validateArray({\n key: `${key}[${i + 1}]`,\n value: value[i + 1],\n valueSpec: {\n length: 2,\n value: 'number'\n },\n validateSpec: options.validateSpec,\n style: options.style,\n styleSpec\n }));\n }\n return errors;\n}\n\nfunction validateSprite(options) {\n let errors = [];\n const sprite = options.value;\n const key = options.key;\n if (!Array.isArray(sprite)) {\n return validateString({\n key,\n value: sprite\n });\n }\n else {\n const allSpriteIds = [];\n const allSpriteURLs = [];\n for (const i in sprite) {\n if (sprite[i].id && allSpriteIds.includes(sprite[i].id))\n errors.push(new ValidationError(key, sprite, `all the sprites' ids must be unique, but ${sprite[i].id} is duplicated`));\n allSpriteIds.push(sprite[i].id);\n if (sprite[i].url && allSpriteURLs.includes(sprite[i].url))\n errors.push(new ValidationError(key, sprite, `all the sprites' URLs must be unique, but ${sprite[i].url} is duplicated`));\n allSpriteURLs.push(sprite[i].url);\n const pairSpec = {\n id: {\n type: 'string',\n required: true,\n },\n url: {\n type: 'string',\n required: true,\n }\n };\n errors = errors.concat(validateObject({\n key: `${key}[${i}]`,\n value: sprite[i],\n valueSpec: pairSpec,\n validateSpec: options.validateSpec,\n }));\n }\n return errors;\n }\n}\n\nfunction validateProjection(options) {\n const projection = options.value;\n const styleSpec = options.styleSpec;\n const projectionSpec = styleSpec.projection;\n const style = options.style;\n const rootType = getType(projection);\n if (projection === undefined) {\n return [];\n }\n else if (rootType !== 'object') {\n return [new ValidationError('projection', projection, `object expected, ${rootType} found`)];\n }\n let errors = [];\n for (const key in projection) {\n if (projectionSpec[key]) {\n errors = errors.concat(options.validateSpec({\n key,\n value: projection[key],\n valueSpec: projectionSpec[key],\n style,\n styleSpec\n }));\n }\n else {\n errors = errors.concat([new ValidationError(key, projection[key], `unknown property \"${key}\"`)]);\n }\n }\n return errors;\n}\n\nfunction validateProjectionDefinition(options) {\n const key = options.key;\n let value = options.value;\n value = value instanceof String ? value.valueOf() : value;\n const type = getType(value);\n if (type === 'array' && !isProjectionDefinitionValue(value) && !isPropertyValueSpecification(value)) {\n return [new ValidationError(key, value, `projection expected, invalid array ${JSON.stringify(value)} found`)];\n }\n else if (!['array', 'string'].includes(type)) {\n return [new ValidationError(key, value, `projection expected, invalid type \"${type}\" found`)];\n }\n return [];\n}\nfunction isPropertyValueSpecification(value) {\n if (['interpolate', 'step', 'literal'].includes(value[0])) {\n return true;\n }\n return false;\n}\nfunction isProjectionDefinitionValue(value) {\n return Array.isArray(value) &&\n value.length === 3 &&\n typeof value[0] === 'string' &&\n typeof value[1] === 'string' &&\n typeof value[2] === 'number';\n}\n\nconst VALIDATORS = {\n '*'() {\n return [];\n },\n 'array': validateArray,\n 'boolean': validateBoolean,\n 'number': validateNumber,\n 'color': validateColor,\n 'constants': validateConstants,\n 'enum': validateEnum,\n 'filter': validateFilter,\n 'function': validateFunction,\n 'layer': validateLayer,\n 'object': validateObject,\n 'source': validateSource,\n 'light': validateLight,\n 'sky': validateSky,\n 'terrain': validateTerrain,\n 'projection': validateProjection,\n 'projectionDefinition': validateProjectionDefinition,\n 'string': validateString,\n 'formatted': validateFormatted,\n 'resolvedImage': validateImage,\n 'padding': validatePadding,\n 'variableAnchorOffsetCollection': validateVariableAnchorOffsetCollection,\n 'sprite': validateSprite,\n};\n/**\n * Main recursive validation function used internally.\n * You should use `validateStyleMin` in the browser or `validateStyle` in node env.\n * @param options - the options object\n * @param options.key - string representing location of validation in style tree. Used only\n * for more informative error reporting.\n * @param options.value - current value from style being evaluated. May be anything from a\n * high level object that needs to be descended into deeper or a simple\n * scalar value.\n * @param options.valueSpec - current spec being evaluated. Tracks value.\n * @param options.styleSpec - current full spec being evaluated.\n * @param options.validateSpec - the validate function itself\n * @param options.style - the style object\n * @param options.objectElementValidators - optional object of functions that will be called\n * @returns an array of errors, or an empty array if no errors are found.\n */\nfunction validate(options) {\n const value = options.value;\n const valueSpec = options.valueSpec;\n const styleSpec = options.styleSpec;\n options.validateSpec = validate;\n if (valueSpec.expression && isFunction$1(unbundle(value))) {\n return validateFunction(options);\n }\n else if (valueSpec.expression && isExpression(deepUnbundle(value))) {\n return validateExpression(options);\n }\n else if (valueSpec.type && VALIDATORS[valueSpec.type]) {\n return VALIDATORS[valueSpec.type](options);\n }\n else {\n const valid = validateObject(extendBy({}, options, {\n valueSpec: valueSpec.type ? styleSpec[valueSpec.type] : valueSpec\n }));\n return valid;\n }\n}\n\nfunction validateGlyphsUrl(options) {\n const value = options.value;\n const key = options.key;\n const errors = validateString(options);\n if (errors.length)\n return errors;\n if (value.indexOf('{fontstack}') === -1) {\n errors.push(new ValidationError(key, value, '\"glyphs\" url must include a \"{fontstack}\" token'));\n }\n if (value.indexOf('{range}') === -1) {\n errors.push(new ValidationError(key, value, '\"glyphs\" url must include a \"{range}\" token'));\n }\n return errors;\n}\n\n/**\n * Validate a MapLibre style against the style specification.\n * Use this when running in the browser.\n *\n * @param style - The style to be validated.\n * @param styleSpec - The style specification to validate against.\n * If omitted, the latest style spec is used.\n * @returns an array of errors, or an empty array if no errors are found.\n * @example\n * const validate = require('@maplibre/maplibre-gl-style-spec/').validateStyleMin;\n * const errors = validate(style);\n */\nfunction validateStyleMin(style, styleSpec = v8Spec) {\n let errors = [];\n errors = errors.concat(validate({\n key: '',\n value: style,\n valueSpec: styleSpec.$root,\n styleSpec,\n style,\n validateSpec: validate,\n objectElementValidators: {\n glyphs: validateGlyphsUrl,\n '*'() {\n return [];\n }\n }\n }));\n if (style['constants']) {\n errors = errors.concat(validateConstants({\n key: 'constants',\n value: style['constants'],\n style,\n styleSpec,\n validateSpec: validate,\n }));\n }\n return sortErrors(errors);\n}\nvalidateStyleMin.source = wrapCleanErrors(injectValidateSpec(validateSource));\nvalidateStyleMin.sprite = wrapCleanErrors(injectValidateSpec(validateSprite));\nvalidateStyleMin.glyphs = wrapCleanErrors(injectValidateSpec(validateGlyphsUrl));\nvalidateStyleMin.light = wrapCleanErrors(injectValidateSpec(validateLight));\nvalidateStyleMin.sky = wrapCleanErrors(injectValidateSpec(validateSky));\nvalidateStyleMin.terrain = wrapCleanErrors(injectValidateSpec(validateTerrain));\nvalidateStyleMin.layer = wrapCleanErrors(injectValidateSpec(validateLayer));\nvalidateStyleMin.filter = wrapCleanErrors(injectValidateSpec(validateFilter));\nvalidateStyleMin.paintProperty = wrapCleanErrors(injectValidateSpec(validatePaintProperty));\nvalidateStyleMin.layoutProperty = wrapCleanErrors(injectValidateSpec(validateLayoutProperty));\nfunction injectValidateSpec(validator) {\n return function (options) {\n return validator({\n ...options,\n validateSpec: validate,\n });\n };\n}\nfunction sortErrors(errors) {\n return [].concat(errors).sort((a, b) => {\n return a.line - b.line;\n });\n}\nfunction wrapCleanErrors(inner) {\n return function (...args) {\n return sortErrors(inner.apply(this, args));\n };\n}\n\n// Note: This regex matches even invalid JSON strings, but since we’re\n// working on the output of `JSON.stringify` we know that only valid strings\n// are present (unless the user supplied a weird `options.indent` but in\n// that case we don’t care since the output would be invalid anyway).\nconst stringOrChar = /(\"(?:[^\\\\\"]|\\\\.)*\")|[:,]/g;\n\nfunction stringify(passedObj, options = {}) {\n const indent = JSON.stringify(\n [1],\n undefined,\n options.indent === undefined ? 2 : options.indent\n ).slice(2, -3);\n\n const maxLength =\n indent === \"\"\n ? Infinity\n : options.maxLength === undefined\n ? 80\n : options.maxLength;\n\n let { replacer } = options;\n\n return (function _stringify(obj, currentIndent, reserved) {\n if (obj && typeof obj.toJSON === \"function\") {\n obj = obj.toJSON();\n }\n\n const string = JSON.stringify(obj, replacer);\n\n if (string === undefined) {\n return string;\n }\n\n const length = maxLength - currentIndent.length - reserved;\n\n if (string.length <= length) {\n const prettified = string.replace(\n stringOrChar,\n (match, stringLiteral) => {\n return stringLiteral || `${match} `;\n }\n );\n if (prettified.length <= length) {\n return prettified;\n }\n }\n\n if (replacer != null) {\n obj = JSON.parse(string);\n replacer = undefined;\n }\n\n if (typeof obj === \"object\" && obj !== null) {\n const nextIndent = currentIndent + indent;\n const items = [];\n let index = 0;\n let start;\n let end;\n\n if (Array.isArray(obj)) {\n start = \"[\";\n end = \"]\";\n const { length } = obj;\n for (; index < length; index++) {\n items.push(\n _stringify(obj[index], nextIndent, index === length - 1 ? 0 : 1) ||\n \"null\"\n );\n }\n } else {\n start = \"{\";\n end = \"}\";\n const keys = Object.keys(obj);\n const { length } = keys;\n for (; index < length; index++) {\n const key = keys[index];\n const keyPart = `${JSON.stringify(key)}: `;\n const value = _stringify(\n obj[key],\n nextIndent,\n keyPart.length + (index === length - 1 ? 0 : 1)\n );\n if (value !== undefined) {\n items.push(keyPart + value);\n }\n }\n }\n\n if (items.length > 0) {\n return [start, indent + items.join(`,\\n${nextIndent}`), end].join(\n `\\n${currentIndent}`\n );\n }\n }\n\n return string;\n })(passedObj, \"\", 0);\n}\n\nfunction sortKeysBy(obj, reference) {\n const result = {};\n for (const key in reference) {\n if (obj[key] !== undefined) {\n result[key] = obj[key];\n }\n }\n for (const key in obj) {\n if (result[key] === undefined) {\n result[key] = obj[key];\n }\n }\n return result;\n}\n/**\n * Format a MapLibre Style. Returns a stringified style with its keys\n * sorted in the same order as the reference style.\n *\n * The optional `space` argument is passed to\n * [`JSON.stringify`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON/stringify)\n * to generate formatted output.\n *\n * If `space` is unspecified, a default of `2` spaces will be used.\n *\n * @private\n * @param {Object} style a MapLibre Style\n * @param {number} [space] space argument to pass to `JSON.stringify`\n * @returns {string} stringified formatted JSON\n * @example\n * var fs = require('fs');\n * var format = require('maplibre-gl-style-spec').format;\n * var style = fs.readFileSync('./source.json', 'utf8');\n * fs.writeFileSync('./dest.json', format(style));\n * fs.writeFileSync('./dest.min.json', format(style, 0));\n */\nfunction format(style, space = 2) {\n style = sortKeysBy(style, v8Spec.$root);\n if (style.layers) {\n style.layers = style.layers.map((layer) => sortKeysBy(layer, v8Spec.layer));\n }\n return stringify(style, { indent: space });\n}\n\nfunction eachLayout(layer, callback) {\n for (const k in layer) {\n if (k.indexOf('layout') === 0) {\n callback(layer[k], k);\n }\n }\n}\nfunction eachPaint(layer, callback) {\n for (const k in layer) {\n if (k.indexOf('paint') === 0) {\n callback(layer[k], k);\n }\n }\n}\nfunction resolveConstant(style, value) {\n if (typeof value === 'string' && value[0] === '@') {\n return resolveConstant(style, style.constants[value]);\n }\n else {\n return value;\n }\n}\nfunction isFunction(value) {\n return Array.isArray(value.stops);\n}\nfunction renameProperty(obj, from, to) {\n obj[to] = obj[from];\n delete obj[from];\n}\nfunction migrateV8(style) {\n style.version = 8;\n // Rename properties, reverse coordinates in source and layers\n eachSource(style, (source) => {\n if (source.type === 'video' && source['url'] !== undefined) {\n renameProperty(source, 'url', 'urls');\n }\n if (source.type === 'video') {\n source.coordinates.forEach((coord) => {\n return coord.reverse();\n });\n }\n });\n eachLayer(style, (layer) => {\n eachLayout(layer, (layout) => {\n if (layout['symbol-min-distance'] !== undefined) {\n renameProperty(layout, 'symbol-min-distance', 'symbol-spacing');\n }\n });\n eachPaint(layer, (paint) => {\n if (paint['background-image'] !== undefined) {\n renameProperty(paint, 'background-image', 'background-pattern');\n }\n if (paint['line-image'] !== undefined) {\n renameProperty(paint, 'line-image', 'line-pattern');\n }\n if (paint['fill-image'] !== undefined) {\n renameProperty(paint, 'fill-image', 'fill-pattern');\n }\n });\n });\n // Inline Constants\n eachProperty(style, { paint: true, layout: true }, (property) => {\n const value = resolveConstant(style, property.value);\n if (isFunction(value)) {\n value.stops.forEach((stop) => {\n stop[1] = resolveConstant(style, stop[1]);\n });\n }\n property.set(value);\n });\n delete style['constants'];\n eachLayer(style, (layer) => {\n // get rid of text-max-size, icon-max-size\n // turn text-size, icon-size into layout properties\n // https://github.com/mapbox/mapbox-gl-style-spec/issues/255\n eachLayout(layer, (layout) => {\n delete layout['text-max-size'];\n delete layout['icon-max-size'];\n });\n eachPaint(layer, (paint) => {\n if (paint['text-size']) {\n if (!layer.layout)\n layer.layout = {};\n layer.layout['text-size'] = paint['text-size'];\n delete paint['text-size'];\n }\n if (paint['icon-size']) {\n if (!layer.layout)\n layer.layout = {};\n layer.layout['icon-size'] = paint['icon-size'];\n delete paint['icon-size'];\n }\n });\n });\n function migrateFontStack(font) {\n function splitAndTrim(string) {\n return string.split(',').map((s) => {\n return s.trim();\n });\n }\n if (Array.isArray(font)) {\n // Assume it's a previously migrated font-array.\n return font;\n }\n else if (typeof font === 'string') {\n return splitAndTrim(font);\n }\n else if (typeof font === 'object') {\n font.stops.forEach((stop) => {\n stop[1] = splitAndTrim(stop[1]);\n });\n return font;\n }\n else {\n throw new Error('unexpected font value');\n }\n }\n eachLayer(style, (layer) => {\n eachLayout(layer, (layout) => {\n if (layout['text-font']) {\n layout['text-font'] = migrateFontStack(layout['text-font']);\n }\n });\n });\n // Reverse order of symbol layers. This is an imperfect migration.\n //\n // The order of a symbol layer in the layers list affects two things:\n // - how it is drawn relative to other layers (like oneway arrows below bridges)\n // - the placement priority compared to other layers\n //\n // It's impossible to reverse the placement priority without breaking the draw order\n // in some cases. This migration only reverses the order of symbol layers that\n // are above all other types of layers.\n //\n // Symbol layers that are at the top of the map preserve their priority.\n // Symbol layers that are below another type (line, fill) of layer preserve their draw order.\n let firstSymbolLayer = 0;\n for (let i = style.layers.length - 1; i >= 0; i--) {\n const layer = style.layers[i];\n if (layer.type !== 'symbol') {\n firstSymbolLayer = i + 1;\n break;\n }\n }\n const symbolLayers = style.layers.splice(firstSymbolLayer);\n symbolLayers.reverse();\n style.layers = style.layers.concat(symbolLayers);\n return style;\n}\n\n/**\n * Migrate the given style object in place to use expressions. Specifically,\n * this will convert (a) \"stop\" functions, and (b) legacy filters to their\n * expression equivalents.\n * @param style The style object to migrate.\n * @returns The migrated style object.\n */\nfunction expressions(style) {\n const converted = [];\n eachLayer(style, (layer) => {\n if (layer.filter) {\n layer.filter = convertFilter(layer.filter);\n }\n });\n eachProperty(style, { paint: true, layout: true }, ({ path, value, reference, set }) => {\n if (isExpression(value))\n return;\n if (typeof value === 'object' && !Array.isArray(value)) {\n set(convertFunction(value, reference));\n converted.push(path.join('.'));\n }\n else if (reference.tokens && typeof value === 'string') {\n set(convertTokenString(value));\n }\n });\n return style;\n}\n\n/**\n * Migrate color style values to supported format.\n *\n * @param colorToMigrate Color value to migrate, could be a string or an expression.\n * @returns Color style value in supported format.\n */\nfunction migrateColors(colorToMigrate) {\n return JSON.parse(migrateHslColors(JSON.stringify(colorToMigrate)));\n}\n/**\n * Created to migrate from colors supported by the former CSS color parsing\n * library `csscolorparser` but not compliant with the CSS Color specification,\n * like `hsl(900, 0.15, 90%)`.\n *\n * @param colorToMigrate Serialized color style value.\n * @returns A serialized color style value in which all non-standard hsl color values\n * have been converted to a format that complies with the CSS Color specification.\n *\n * @example\n * migrateHslColors('\"hsl(900, 0.15, 90%)\"'); // returns '\"hsl(900, 15%, 90%)\"'\n * migrateHslColors('\"hsla(900, .15, .9)\"'); // returns '\"hsl(900, 15%, 90%)\"'\n * migrateHslColors('\"hsl(900, 15%, 90%)\"'); // returns '\"hsl(900, 15%, 90%)\"' - no changes\n */\nfunction migrateHslColors(colorToMigrate) {\n return colorToMigrate.replace(/\"hsla?\\((.+?)\\)\"/gi, (match, hslArgs) => {\n const argsMatch = hslArgs.match(/^(.+?)\\s*,\\s*(.+?)\\s*,\\s*(.+?)(?:\\s*,\\s*(.+))?$/i);\n if (argsMatch) {\n let [h, s, l, a] = argsMatch.slice(1);\n [s, l] = [s, l].map(v => v.endsWith('%') ? v : `${parseFloat(v) * 100}%`);\n return `\"hsl${typeof a === 'string' ? 'a' : ''}(${[h, s, l, a].filter(Boolean).join(',')})\"`;\n }\n return match;\n });\n}\n\n/**\n * Migrate a Mapbox/MapLibre GL Style to the latest version.\n *\n * @param style - a MapLibre Style\n * @returns a migrated style\n * @example\n * const fs = require('fs');\n * const migrate = require('@maplibre/maplibre-gl-style-spec').migrate;\n * const style = fs.readFileSync('./style.json', 'utf8');\n * fs.writeFileSync('./style.json', JSON.stringify(migrate(style)));\n */\nfunction migrate(style) {\n let migrated = false;\n if (style.version === 7) {\n style = migrateV8(style);\n migrated = true;\n }\n if (style.version === 8) {\n migrated = !!expressions(style);\n migrated = true;\n }\n eachProperty(style, { paint: true, layout: true }, ({ value, reference, set }) => {\n if (reference.type === 'color') {\n set(migrateColors(value));\n }\n });\n if (!migrated) {\n throw new Error(`Cannot migrate from ${style.version}`);\n }\n return style;\n}\n\nconst v8 = v8Spec;\nconst expression = {\n StyleExpression,\n StylePropertyFunction,\n ZoomConstantExpression,\n ZoomDependentExpression,\n createExpression,\n createPropertyExpression,\n isExpression,\n isExpressionFilter,\n isZoomExpression,\n normalizePropertyExpression,\n};\nconst styleFunction = {\n convertFunction,\n createFunction,\n isFunction: isFunction$1\n};\nconst visit = { eachLayer, eachProperty, eachSource };\n\nexport { Color, ColorType, CompoundExpression, EvaluationContext, FormatExpression, Formatted, FormattedSection, FormattedType, Interpolate, Literal, NullType, Padding, ParsingError, ProjectionDefinition, ProjectionDefinitionType, ResolvedImage, Step, StyleExpression, StylePropertyFunction, ValidationError, VariableAnchorOffsetCollection, ZoomConstantExpression, ZoomDependentExpression, classifyRings, convertFilter, convertFunction, createExpression, createFunction, createPropertyExpression, derefLayers, diff, emptyStyle, expression, expressions$1 as expressions, featureFilter, format, styleFunction as function, groupByLayout, interpolateFactory as interpolates, isExpression, isFunction$1 as isFunction, isZoomExpression, v8Spec as latest, migrate, normalizePropertyExpression, supportsPropertyExpression, typeToString as toString, typeOf, v8, validate, validateStyleMin, visit };\n//# sourceMappingURL=index.mjs.map\n","/**\n * An error message to use when an operation is aborted\n */\nexport const ABORT_ERROR = 'AbortError';\n\n/**\n * Check if an error is an abort error\n * @param error - An error object\n * @returns - true if the error is an abort error\n */\nexport function isAbortError(error: Error): boolean {\n return error.message === ABORT_ERROR;\n}\n\n/**\n * Use this when you need to create an abort error.\n * @returns An error object with the message \"AbortError\"\n */\nexport function createAbortError(): Error {\n return new Error(ABORT_ERROR);\n}\n","import type {RequestParameters, GetResourceResponse} from './ajax';\n\n/**\n * This method type is used to register a protocol handler.\n * Use the abort controller for aborting requests.\n * Return a promise with the relevant resource response.\n */\nexport type AddProtocolAction = (requestParameters: RequestParameters, abortController: AbortController) => Promise>\n\n/**\n * This is a global config object used to store the configuration\n * It is available in the workers as well.\n * Only serializable data should be stored in it.\n */\ntype Config = {\n MAX_PARALLEL_IMAGE_REQUESTS: number;\n MAX_PARALLEL_IMAGE_REQUESTS_PER_FRAME: number;\n MAX_TILE_CACHE_ZOOM_LEVELS: number;\n REGISTERED_PROTOCOLS: {[x: string]: AddProtocolAction };\n WORKER_URL: string;\n};\n\nexport const config: Config = {\n MAX_PARALLEL_IMAGE_REQUESTS: 16,\n MAX_PARALLEL_IMAGE_REQUESTS_PER_FRAME: 8,\n MAX_TILE_CACHE_ZOOM_LEVELS: 5,\n REGISTERED_PROTOCOLS: {},\n WORKER_URL: ''\n};\n","import {type AddProtocolAction, config} from '../util/config';\n\nexport function getProtocol(url: string) {\n return config.REGISTERED_PROTOCOLS[url.substring(0, url.indexOf('://'))];\n}\n/**\n * Adds a custom load resource function that will be called when using a URL that starts with a custom url schema.\n * This will happen in the main thread, and workers might call it if they don't know how to handle the protocol.\n * The example below will be triggered for custom:// urls defined in the sources list in the style definitions.\n * The function passed will receive the request parameters and should return with the resulting resource,\n * for example a pbf vector tile, non-compressed, represented as ArrayBuffer.\n *\n * @param customProtocol - the protocol to hook, for example 'custom'\n * @param loadFn - the function to use when trying to fetch a tile specified by the customProtocol\n * @example\n * ```ts\n * // This will fetch a file using the fetch API (this is obviously a non interesting example...)\n * addProtocol('custom', async (params, abortController) => {\n * const t = await fetch(`https://${params.url.split(\"://\")[1]}`);\n * if (t.status == 200) {\n * const buffer = await t.arrayBuffer();\n * return {data: buffer}\n * } else {\n * throw new Error(`Tile fetch error: ${t.statusText}`);\n * }\n * });\n * // the following is an example of a way to return an error when trying to load a tile\n * addProtocol('custom2', async (params, abortController) => {\n * throw new Error('someErrorMessage'));\n * });\n * ```\n */\nexport function addProtocol(customProtocol: string, loadFn: AddProtocolAction) {\n config.REGISTERED_PROTOCOLS[customProtocol] = loadFn;\n}\n\n/**\n * Removes a previously added protocol in the main thread.\n *\n * @param customProtocol - the custom protocol to remove registration for\n * @example\n * ```ts\n * removeProtocol('custom');\n * ```\n */\nexport function removeProtocol(customProtocol: string) {\n delete config.REGISTERED_PROTOCOLS[customProtocol];\n}\n","import {extend, isWorker} from './util';\nimport {createAbortError} from './abort_error';\nimport {getProtocol} from '../source/protocol_crud';\nimport {MessageType} from './actor_messages';\n\n/**\n * This is used to identify the global dispatcher id when sending a message from the worker without a target map id.\n */\nexport const GLOBAL_DISPATCHER_ID = 'global-dispatcher';\n\n/**\n * A type used to store the tile's expiration date and cache control definition\n */\nexport type ExpiryData = {cacheControl?: string | null; expires?: Date | string | null};\n\n/**\n * A `RequestParameters` object to be returned from Map.options.transformRequest callbacks.\n * @example\n * ```ts\n * // use transformRequest to modify requests that begin with `http://myHost`\n * transformRequest: function(url, resourceType) {\n * if (resourceType === 'Source' && url.indexOf('http://myHost') > -1) {\n * return {\n * url: url.replace('http', 'https'),\n * headers: { 'my-custom-header': true },\n * credentials: 'include' // Include cookies for cross-origin requests\n * }\n * }\n * }\n * ```\n */\nexport type RequestParameters = {\n /**\n * The URL to be requested.\n */\n url: string;\n /**\n * The headers to be sent with the request.\n */\n headers?: any;\n /**\n * Request method `'GET' | 'POST' | 'PUT'`.\n */\n method?: 'GET' | 'POST' | 'PUT';\n /**\n * Request body.\n */\n body?: string;\n /**\n * Response body type to be returned.\n */\n type?: 'string' | 'json' | 'arrayBuffer' | 'image';\n /**\n * `'same-origin'|'include'` Use 'include' to send cookies with cross-origin requests.\n */\n credentials?: 'same-origin' | 'include';\n /**\n * If `true`, Resource Timing API information will be collected for these transformed requests and returned in a resourceTiming property of relevant data events.\n */\n collectResourceTiming?: boolean;\n /**\n * Parameters supported only by browser fetch API. Property of the Request interface contains the cache mode of the request. It controls how the request will interact with the browser's HTTP cache. (https://developer.mozilla.org/en-US/docs/Web/API/Request/cache)\n */\n cache?: RequestCache;\n};\n\n/**\n * The response object returned from a successful AJAx request\n */\nexport type GetResourceResponse = ExpiryData & {\n data: T;\n}\n\n/**\n * The response callback used in various places\n */\nexport type ResponseCallback = (\n error?: Error | null,\n data?: T | null,\n cacheControl?: string | null,\n expires?: string | Date | null\n) => void;\n\n/**\n * An error thrown when a HTTP request results in an error response.\n */\nexport class AJAXError extends Error {\n /**\n * The response's HTTP status code.\n */\n status: number;\n\n /**\n * The response's HTTP status text.\n */\n statusText: string;\n\n /**\n * The request's URL.\n */\n url: string;\n\n /**\n * The response's body.\n */\n body: Blob;\n\n /**\n * @param status - The response's HTTP status code.\n * @param statusText - The response's HTTP status text.\n * @param url - The request's URL.\n * @param body - The response's body.\n */\n constructor(status: number, statusText: string, url: string, body: Blob) {\n super(`AJAXError: ${statusText} (${status}): ${url}`);\n this.status = status;\n this.statusText = statusText;\n this.url = url;\n this.body = body;\n }\n}\n\n/**\n * Ensure that we're sending the correct referrer from blob URL worker bundles.\n * For files loaded from the local file system, `location.origin` will be set\n * to the string(!) \"null\" (Firefox), or \"file://\" (Chrome, Safari, Edge),\n * and we will set an empty referrer. Otherwise, we're using the document's URL.\n */\nexport const getReferrer = () => isWorker(self) ?\n self.worker && self.worker.referrer :\n (window.location.protocol === 'blob:' ? window.parent : window).location.href;\n\n/**\n * Determines whether a URL is a file:// URL. This is obviously the case if it begins\n * with file://. Relative URLs are also file:// URLs iff the original document was loaded\n * via a file:// URL.\n * @param url - The URL to check\n * @returns `true` if the URL is a file:// URL, `false` otherwise\n */\nconst isFileURL = url => /^file:/.test(url) || (/^file:/.test(getReferrer()) && !/^\\w+:/.test(url));\n\nasync function makeFetchRequest(requestParameters: RequestParameters, abortController: AbortController): Promise> {\n const request = new Request(requestParameters.url, {\n method: requestParameters.method || 'GET',\n body: requestParameters.body,\n credentials: requestParameters.credentials,\n headers: requestParameters.headers,\n cache: requestParameters.cache,\n referrer: getReferrer(),\n signal: abortController.signal\n });\n\n // If the user has already set an Accept header, do not overwrite it here\n if (requestParameters.type === 'json' && !request.headers.has('Accept')) {\n request.headers.set('Accept', 'application/json');\n }\n\n let response: Response;\n try {\n response = await fetch(request);\n } catch (e) {\n // When the error is due to CORS policy, DNS issue or malformed URL, the fetch call does not resolve but throws a generic TypeError instead.\n // It is preferable to throw an AJAXError so that the Map event \"error\" can catch it and still have\n // access to the faulty url. In such case, we provide the arbitrary HTTP error code of `0`.\n throw new AJAXError(0, e.message, requestParameters.url, new Blob());\n }\n\n if (!response.ok) {\n const body = await response.blob();\n throw new AJAXError(response.status, response.statusText, requestParameters.url, body);\n }\n let parsePromise: Promise;\n if ((requestParameters.type === 'arrayBuffer' || requestParameters.type === 'image')) {\n parsePromise = response.arrayBuffer();\n } else if (requestParameters.type === 'json') {\n parsePromise = response.json();\n } else {\n parsePromise = response.text();\n }\n const result = await parsePromise;\n if (abortController.signal.aborted) {\n throw createAbortError();\n }\n return {data: result, cacheControl: response.headers.get('Cache-Control'), expires: response.headers.get('Expires')};\n}\n\nfunction makeXMLHttpRequest(requestParameters: RequestParameters, abortController: AbortController): Promise> {\n return new Promise((resolve, reject) => {\n const xhr: XMLHttpRequest = new XMLHttpRequest();\n\n xhr.open(requestParameters.method || 'GET', requestParameters.url, true);\n if (requestParameters.type === 'arrayBuffer' || requestParameters.type === 'image') {\n xhr.responseType = 'arraybuffer';\n }\n for (const k in requestParameters.headers) {\n xhr.setRequestHeader(k, requestParameters.headers[k]);\n }\n if (requestParameters.type === 'json') {\n xhr.responseType = 'text';\n // Do not overwrite the user-provided Accept header\n if (!requestParameters.headers?.Accept) {\n xhr.setRequestHeader('Accept', 'application/json');\n }\n }\n xhr.withCredentials = requestParameters.credentials === 'include';\n xhr.onerror = () => {\n reject(new Error(xhr.statusText));\n };\n xhr.onload = () => {\n if (abortController.signal.aborted) {\n return;\n }\n if (((xhr.status >= 200 && xhr.status < 300) || xhr.status === 0) && xhr.response !== null) {\n let data: unknown = xhr.response;\n if (requestParameters.type === 'json') {\n // We're manually parsing JSON here to get better error messages.\n try {\n data = JSON.parse(xhr.response);\n } catch (err) {\n reject(err);\n return;\n }\n }\n resolve({data, cacheControl: xhr.getResponseHeader('Cache-Control'), expires: xhr.getResponseHeader('Expires')});\n } else {\n const body = new Blob([xhr.response], {type: xhr.getResponseHeader('Content-Type')});\n reject(new AJAXError(xhr.status, xhr.statusText, requestParameters.url, body));\n }\n };\n abortController.signal.addEventListener('abort', () => {\n xhr.abort();\n reject(createAbortError());\n });\n xhr.send(requestParameters.body);\n });\n}\n\n/**\n * We're trying to use the Fetch API if possible. However, requests for resources with the file:// URI scheme don't work with the Fetch API.\n * In this case we unconditionally use XHR on the current thread since referrers don't matter.\n * This method can also use the registered method if `addProtocol` was called.\n * @param requestParameters - The request parameters\n * @param abortController - The abort controller allowing to cancel the request\n * @returns a promise resolving to the response, including cache control and expiry data\n */\nexport const makeRequest = function(requestParameters: RequestParameters, abortController: AbortController): Promise> {\n if (/:\\/\\//.test(requestParameters.url) && !(/^https?:|^file:/.test(requestParameters.url))) {\n const protocolLoadFn = getProtocol(requestParameters.url);\n if (protocolLoadFn) {\n return protocolLoadFn(requestParameters, abortController);\n }\n if (isWorker(self) && self.worker && self.worker.actor) {\n return self.worker.actor.sendAsync({type: MessageType.getResource, data: requestParameters, targetMapId: GLOBAL_DISPATCHER_ID}, abortController);\n }\n }\n if (!isFileURL(requestParameters.url)) {\n if (fetch && Request && AbortController && Object.prototype.hasOwnProperty.call(Request.prototype, 'signal')) {\n return makeFetchRequest(requestParameters, abortController);\n }\n if (isWorker(self) && self.worker && self.worker.actor) {\n return self.worker.actor.sendAsync({type: MessageType.getResource, data: requestParameters, mustQueue: true, targetMapId: GLOBAL_DISPATCHER_ID}, abortController);\n }\n }\n return makeXMLHttpRequest(requestParameters, abortController);\n};\n\nexport const getJSON = (requestParameters: RequestParameters, abortController: AbortController): Promise<{data: T} & ExpiryData> => {\n return makeRequest(extend(requestParameters, {type: 'json'}), abortController);\n};\n\nexport const getArrayBuffer = (requestParameters: RequestParameters, abortController: AbortController): Promise<{data: ArrayBuffer} & ExpiryData> => {\n return makeRequest(extend(requestParameters, {type: 'arrayBuffer'}), abortController);\n};\n\nexport function sameOrigin(inComingUrl: string) {\n // A relative URL \"/foo\" or \"./foo\" will throw exception in URL's ctor,\n // try-catch is expansive so just use a heuristic check to avoid it\n // also check data URL\n if (!inComingUrl ||\n inComingUrl.indexOf('://') <= 0 || // relative URL\n inComingUrl.indexOf('data:image/') === 0 || // data image URL\n inComingUrl.indexOf('blob:') === 0) { // blob\n return true;\n }\n const urlObj = new URL(inComingUrl);\n const locationObj = window.location;\n return urlObj.protocol === locationObj.protocol && urlObj.host === locationObj.host;\n}\n\nexport const getVideo = (urls: Array): Promise => {\n const video: HTMLVideoElement = window.document.createElement('video');\n video.muted = true;\n return new Promise((resolve) => {\n video.onloadstart = () => {\n resolve(video);\n };\n for (const url of urls) {\n const s: HTMLSourceElement = window.document.createElement('source');\n if (!sameOrigin(url)) {\n video.crossOrigin = 'Anonymous';\n }\n s.src = url;\n video.appendChild(s);\n }\n });\n};\n","import {TransferableGridIndex} from './transferable_grid_index';\nimport {Color, CompoundExpression, expressions, ResolvedImage, StylePropertyFunction,\n StyleExpression, ZoomDependentExpression, ZoomConstantExpression} from '@maplibre/maplibre-gl-style-spec';\nimport {AJAXError} from './ajax';\nimport {isImageBitmap} from './util';\n\n/**\n * A class that is serialized to and json, that can be constructed back to the original class in the worker or in the main thread\n */\ntype SerializedObject = {\n [_: string]: S;\n};\n\n/**\n * All the possible values that can be serialized and sent to and from the worker\n */\nexport type Serialized = null | void | boolean | number | string | Boolean | Number | String | Date | RegExp | ArrayBuffer | ArrayBufferView | ImageData | ImageBitmap | Blob | Array | SerializedObject;\n\ntype Registry = {\n [_: string]: {\n klass: {\n new (...args: any): any;\n deserialize?: (input: Serialized) => unknown;\n serialize?: (input: any, transferables: Transferable[]) => SerializedObject;\n };\n omit: ReadonlyArray;\n shallow: ReadonlyArray;\n };\n};\n\n/**\n * Register options\n */\ntype RegisterOptions = {\n /**\n * List of properties to omit from serialization (e.g., cached/computed properties)\n */\n omit?: ReadonlyArray;\n /**\n * List of properties that should be serialized by a simple shallow copy, rather than by a recursive call to serialize().\n */\n shallow?: ReadonlyArray;\n};\n\nconst registry: Registry = {};\n\n/**\n * Register the given class as serializable.\n *\n * @param options - the registration options\n */\nexport function register(\n name: string,\n klass: {\n new (...args: any): T;\n },\n options: RegisterOptions = {}\n) {\n if (registry[name]) throw new Error(`${name} is already registered.`);\n ((Object.defineProperty as any))(klass, '_classRegistryKey', {\n value: name,\n writeable: false\n });\n registry[name] = {\n klass,\n omit: options.omit as ReadonlyArray || [],\n shallow: options.shallow as ReadonlyArray || []\n };\n}\n\nregister('Object', Object);\nregister('TransferableGridIndex', TransferableGridIndex);\n\nregister('Color', Color);\nregister('Error', Error);\nregister('AJAXError', AJAXError);\nregister('ResolvedImage', ResolvedImage);\n\nregister('StylePropertyFunction', StylePropertyFunction);\nregister('StyleExpression', StyleExpression, {omit: ['_evaluator']});\n\nregister('ZoomDependentExpression', ZoomDependentExpression);\nregister('ZoomConstantExpression', ZoomConstantExpression);\nregister('CompoundExpression', CompoundExpression, {omit: ['_evaluate']});\nfor (const name in expressions) {\n if ((expressions[name] as any)._classRegistryKey) continue;\n register(`Expression_${name}`, expressions[name]);\n}\n\nfunction isArrayBuffer(value: any): value is ArrayBuffer {\n return value && typeof ArrayBuffer !== 'undefined' &&\n (value instanceof ArrayBuffer || (value.constructor && value.constructor.name === 'ArrayBuffer'));\n}\n\nfunction getClassRegistryKey(input: Object|SerializedObject): string {\n const klass = (input.constructor as any);\n return (input as SerializedObject).$name || klass._classRegistryKey;\n}\n\nfunction isRegistered(input: unknown): boolean {\n if (input === null || typeof input !== 'object') {\n return false;\n }\n const classRegistryKey = getClassRegistryKey(input);\n if (classRegistryKey && classRegistryKey !== 'Object') {\n return true;\n }\n return false;\n}\n\nfunction isSerializeHandledByBuiltin(input: unknown) {\n return (!isRegistered(input) && (\n input === null ||\n input === undefined ||\n typeof input === 'boolean' ||\n typeof input === 'number' ||\n typeof input === 'string' ||\n input instanceof Boolean ||\n input instanceof Number ||\n input instanceof String ||\n input instanceof Date ||\n input instanceof RegExp ||\n input instanceof Blob ||\n input instanceof Error ||\n isArrayBuffer(input) ||\n isImageBitmap(input) ||\n ArrayBuffer.isView(input) ||\n input instanceof ImageData)\n );\n}\n\n/**\n * Serialize the given object for transfer to or from a web worker.\n *\n * For non-builtin types, recursively serialize each property (possibly\n * omitting certain properties - see register()), and package the result along\n * with the constructor's `name` so that the appropriate constructor can be\n * looked up in `deserialize()`.\n *\n * If a `transferables` array is provided, add any transferable objects (i.e.,\n * any ArrayBuffers or ArrayBuffer views) to the list. (If a copy is needed,\n * this should happen in the client code, before using serialize().)\n */\nexport function serialize(input: unknown, transferables?: Array | null): Serialized {\n if (isSerializeHandledByBuiltin(input)) {\n if (isArrayBuffer(input) || isImageBitmap(input)) {\n if (transferables) {\n transferables.push(input);\n }\n }\n if (ArrayBuffer.isView(input)) {\n const view = input;\n if (transferables) {\n transferables.push(view.buffer);\n }\n }\n if (input instanceof ImageData) {\n if (transferables) {\n transferables.push(input.data.buffer);\n }\n }\n return input;\n }\n\n if (Array.isArray(input)) {\n const serialized: Array = [];\n for (const item of input) {\n serialized.push(serialize(item, transferables));\n }\n return serialized;\n }\n\n if (typeof input !== 'object') {\n throw new Error(`can't serialize object of type ${typeof input}`);\n }\n const classRegistryKey = getClassRegistryKey(input);\n if (!classRegistryKey) {\n throw new Error(`can't serialize object of unregistered class ${input.constructor.name}`);\n }\n if (!registry[classRegistryKey]) throw new Error(`${classRegistryKey} is not registered.`);\n const {klass} = registry[classRegistryKey];\n const properties: SerializedObject = klass.serialize ?\n // (Temporary workaround) allow a class to provide static\n // `serialize()` and `deserialize()` methods to bypass the generic\n // approach.\n // This temporary workaround lets us use the generic serialization\n // approach for objects whose members include instances of dynamic\n // StructArray types. Once we refactor StructArray to be static,\n // we can remove this complexity.\n (klass.serialize(input, transferables) as SerializedObject) : {};\n\n if (!klass.serialize) {\n for (const key in input) {\n if (!input.hasOwnProperty(key)) continue;\n if (registry[classRegistryKey].omit.indexOf(key) >= 0) continue;\n const property = input[key];\n properties[key] = registry[classRegistryKey].shallow.indexOf(key) >= 0 ?\n property :\n serialize(property, transferables);\n }\n if (input instanceof Error) {\n properties.message = input.message;\n }\n } else {\n if (transferables && properties === transferables[transferables.length - 1]) {\n throw new Error('statically serialized object won\\'t survive transfer of $name property');\n }\n }\n\n if (properties.$name) {\n throw new Error('$name property is reserved for worker serialization logic.');\n }\n if (classRegistryKey !== 'Object') {\n properties.$name = classRegistryKey;\n }\n\n return properties;\n}\n\nexport function deserialize(input: Serialized): unknown {\n if (isSerializeHandledByBuiltin(input)) {\n return input;\n }\n\n if (Array.isArray(input)) {\n return input.map(deserialize);\n }\n\n if (typeof input !== 'object') {\n throw new Error(`can't deserialize object of type ${typeof input}`);\n }\n const classRegistryKey = getClassRegistryKey(input) || 'Object';\n if (!registry[classRegistryKey]) {\n throw new Error(`can't deserialize unregistered class ${classRegistryKey}`);\n }\n const {klass} = registry[classRegistryKey];\n if (!klass) {\n throw new Error(`can't deserialize unregistered class ${classRegistryKey}`);\n }\n\n if (klass.deserialize) {\n return klass.deserialize(input);\n }\n\n const result = Object.create(klass.prototype);\n\n for (const key of Object.keys(input)) {\n if (key === '$name') continue;\n const value = (input as SerializedObject)[key];\n result[key] = registry[classRegistryKey].shallow.indexOf(key) >= 0 ? value : deserialize(value);\n }\n\n return result;\n}\n","import {getTileBBox} from '@mapbox/whoots-js';\nimport {EXTENT} from '../data/extent';\nimport Point from '@mapbox/point-geometry';\nimport {MercatorCoordinate} from '../geo/mercator_coordinate';\nimport {register} from '../util/web_worker_transfer';\nimport {type mat4} from 'gl-matrix';\nimport {type ICanonicalTileID, type IMercatorCoordinate} from '@maplibre/maplibre-gl-style-spec';\nimport {MAX_TILE_ZOOM, MIN_TILE_ZOOM} from '../util/util';\nimport {isInBoundsForTileZoomXY} from '../util/world_bounds';\n\n/**\n * A canonical way to define a tile ID\n */\nexport class CanonicalTileID implements ICanonicalTileID {\n z: number;\n x: number;\n y: number;\n key: string;\n\n constructor(z: number, x: number, y: number) {\n\n if (!isInBoundsForTileZoomXY(z, x, y)) {\n throw new Error(`x=${x}, y=${y}, z=${z} outside of bounds. 0<=x<${Math.pow(2, z)}, 0<=y<${Math.pow(2, z)} ${MIN_TILE_ZOOM}<=z<=${MAX_TILE_ZOOM} `);\n }\n\n this.z = z;\n this.x = x;\n this.y = y;\n this.key = calculateTileKey(0, z, z, x, y);\n }\n\n equals(id: ICanonicalTileID) {\n return this.z === id.z && this.x === id.x && this.y === id.y;\n }\n\n // given a list of urls, choose a url template and return a tile URL\n url(urls: Array, pixelRatio: number, scheme?: string | null) {\n const bbox = getTileBBox(this.x, this.y, this.z);\n const quadkey = getQuadkey(this.z, this.x, this.y);\n\n return urls[(this.x + this.y) % urls.length]\n .replace(/{prefix}/g, (this.x % 16).toString(16) + (this.y % 16).toString(16))\n .replace(/{z}/g, String(this.z))\n .replace(/{x}/g, String(this.x))\n .replace(/{y}/g, String(scheme === 'tms' ? (Math.pow(2, this.z) - this.y - 1) : this.y))\n .replace(/{ratio}/g, pixelRatio > 1 ? '@2x' : '')\n .replace(/{quadkey}/g, quadkey)\n .replace(/{bbox-epsg-3857}/g, bbox);\n }\n\n isChildOf(parent: ICanonicalTileID) {\n const dz = this.z - parent.z;\n return dz > 0 && parent.x === (this.x >> dz) && parent.y === (this.y >> dz);\n }\n\n getTilePoint(coord: IMercatorCoordinate) {\n const tilesAtZoom = Math.pow(2, this.z);\n return new Point(\n (coord.x * tilesAtZoom - this.x) * EXTENT,\n (coord.y * tilesAtZoom - this.y) * EXTENT);\n }\n\n toString() {\n return `${this.z}/${this.x}/${this.y}`;\n }\n}\n\n/**\n * @internal\n * An unwrapped tile identifier\n */\nexport class UnwrappedTileID {\n wrap: number;\n canonical: CanonicalTileID;\n key: string;\n\n constructor(wrap: number, canonical: CanonicalTileID) {\n this.wrap = wrap;\n this.canonical = canonical;\n this.key = calculateTileKey(wrap, canonical.z, canonical.z, canonical.x, canonical.y);\n }\n}\n\n/**\n * An overscaled tile identifier\n */\nexport class OverscaledTileID {\n overscaledZ: number;\n wrap: number;\n canonical: CanonicalTileID;\n key: string;\n /**\n * This matrix is used during terrain's render-to-texture stage only.\n * If the render-to-texture stage is active, this matrix will be present\n * and should be used, otherwise this matrix will be null.\n * The matrix should be float32 in order to avoid slow WebGL calls in Chrome.\n */\n terrainRttPosMatrix32f: mat4 | null = null;\n\n constructor(overscaledZ: number, wrap: number, z: number, x: number, y: number) {\n if (overscaledZ < z) throw new Error(`overscaledZ should be >= z; overscaledZ = ${overscaledZ}; z = ${z}`);\n this.overscaledZ = overscaledZ;\n this.wrap = wrap;\n this.canonical = new CanonicalTileID(z, +x, +y);\n this.key = calculateTileKey(wrap, overscaledZ, z, x, y);\n }\n\n clone() {\n return new OverscaledTileID(this.overscaledZ, this.wrap, this.canonical.z, this.canonical.x, this.canonical.y);\n }\n\n equals(id: OverscaledTileID) {\n return this.overscaledZ === id.overscaledZ && this.wrap === id.wrap && this.canonical.equals(id.canonical);\n }\n\n scaledTo(targetZ: number) {\n if (targetZ > this.overscaledZ) throw new Error(`targetZ > this.overscaledZ; targetZ = ${targetZ}; overscaledZ = ${this.overscaledZ}`);\n const zDifference = this.canonical.z - targetZ;\n if (targetZ > this.canonical.z) {\n return new OverscaledTileID(targetZ, this.wrap, this.canonical.z, this.canonical.x, this.canonical.y);\n } else {\n return new OverscaledTileID(targetZ, this.wrap, targetZ, this.canonical.x >> zDifference, this.canonical.y >> zDifference);\n }\n }\n\n /*\n * calculateScaledKey is an optimization:\n * when withWrap == true, implements the same as this.scaledTo(z).key,\n * when withWrap == false, implements the same as this.scaledTo(z).wrapped().key.\n */\n calculateScaledKey(targetZ: number, withWrap: boolean): string {\n if (targetZ > this.overscaledZ) throw new Error(`targetZ > this.overscaledZ; targetZ = ${targetZ}; overscaledZ = ${this.overscaledZ}`);\n const zDifference = this.canonical.z - targetZ;\n if (targetZ > this.canonical.z) {\n return calculateTileKey(this.wrap * +withWrap, targetZ, this.canonical.z, this.canonical.x, this.canonical.y);\n } else {\n return calculateTileKey(this.wrap * +withWrap, targetZ, targetZ, this.canonical.x >> zDifference, this.canonical.y >> zDifference);\n }\n }\n\n isChildOf(parent: OverscaledTileID) {\n if (parent.wrap !== this.wrap) {\n // We can't be a child if we're in a different world copy\n return false;\n }\n const zDifference = this.canonical.z - parent.canonical.z;\n // We're first testing for z == 0, to avoid a 32 bit shift, which is undefined.\n return parent.overscaledZ === 0 || (\n parent.overscaledZ < this.overscaledZ &&\n parent.canonical.x === (this.canonical.x >> zDifference) &&\n parent.canonical.y === (this.canonical.y >> zDifference));\n }\n\n children(sourceMaxZoom: number) {\n if (this.overscaledZ >= sourceMaxZoom) {\n // return a single tile coord representing a an overscaled tile\n return [new OverscaledTileID(this.overscaledZ + 1, this.wrap, this.canonical.z, this.canonical.x, this.canonical.y)];\n }\n\n const z = this.canonical.z + 1;\n const x = this.canonical.x * 2;\n const y = this.canonical.y * 2;\n return [\n new OverscaledTileID(z, this.wrap, z, x, y),\n new OverscaledTileID(z, this.wrap, z, x + 1, y),\n new OverscaledTileID(z, this.wrap, z, x, y + 1),\n new OverscaledTileID(z, this.wrap, z, x + 1, y + 1)\n ];\n }\n\n isLessThan(rhs: OverscaledTileID) {\n if (this.wrap < rhs.wrap) return true;\n if (this.wrap > rhs.wrap) return false;\n\n if (this.overscaledZ < rhs.overscaledZ) return true;\n if (this.overscaledZ > rhs.overscaledZ) return false;\n\n if (this.canonical.x < rhs.canonical.x) return true;\n if (this.canonical.x > rhs.canonical.x) return false;\n\n if (this.canonical.y < rhs.canonical.y) return true;\n return false;\n }\n\n wrapped() {\n return new OverscaledTileID(this.overscaledZ, 0, this.canonical.z, this.canonical.x, this.canonical.y);\n }\n\n unwrapTo(wrap: number) {\n return new OverscaledTileID(this.overscaledZ, wrap, this.canonical.z, this.canonical.x, this.canonical.y);\n }\n\n overscaleFactor() {\n return Math.pow(2, this.overscaledZ - this.canonical.z);\n }\n\n toUnwrapped() {\n return new UnwrappedTileID(this.wrap, this.canonical);\n }\n\n toString() {\n return `${this.overscaledZ}/${this.canonical.x}/${this.canonical.y}`;\n }\n\n getTilePoint(coord: MercatorCoordinate) {\n return this.canonical.getTilePoint(new MercatorCoordinate(coord.x - this.wrap, coord.y));\n }\n}\n\nexport function calculateTileKey(wrap: number, overscaledZ: number, z: number, x: number, y: number): string {\n wrap *= 2;\n if (wrap < 0) wrap = wrap * -1 - 1;\n const dim = 1 << z;\n return (dim * dim * wrap + dim * y + x).toString(36) + z.toString(36) + overscaledZ.toString(36);\n}\n\nfunction getQuadkey(z, x, y) {\n let quadkey = '', mask;\n for (let i = z; i > 0; i--) {\n mask = 1 << (i - 1);\n quadkey += ((x & mask ? 1 : 0) + (y & mask ? 2 : 0));\n }\n return quadkey;\n}\n\nregister('CanonicalTileID', CanonicalTileID);\nregister('OverscaledTileID', OverscaledTileID, {omit: ['terrainRttPosMatrix32f']});\n","import {MAX_TILE_ZOOM, MIN_TILE_ZOOM} from './util';\nimport {type LngLat} from '../geo/lng_lat';\nimport {MercatorCoordinate} from '../geo/mercator_coordinate';\n\n/**\n * Returns true if a given tile zoom (Z), X, and Y are in the bounds of the world.\n * Zoom bounds are the minimum zoom (inclusive) through the maximum zoom (inclusive).\n * X and Y bounds are 0 (inclusive) to their respective zoom-dependent maxima (exclusive).\n *\n * @param zoom - the tile zoom (Z)\n * @param x - the tile X\n * @param y - the tile Y\n * @returns `true` if a given tile zoom, X, and Y are in the bounds of the world.\n */\nexport function isInBoundsForTileZoomXY(zoom: number, x: number, y: number): boolean {\n return !(\n zoom < MIN_TILE_ZOOM ||\n zoom > MAX_TILE_ZOOM ||\n y < 0 ||\n y >= Math.pow(2, zoom) ||\n x < 0 ||\n x >= Math.pow(2, zoom)\n );\n}\n\n/**\n * Returns true if a given zoom and `LngLat` are in the bounds of the world.\n * Does not wrap `LngLat` when checking if in bounds.\n * Zoom bounds are the minimum zoom (inclusive) through the maximum zoom (inclusive).\n * `LngLat` bounds are the mercator world's north-west corner (inclusive) to its south-east corner (exclusive).\n *\n * @param zoom - the tile zoom (Z)\n * @param LngLat - the `LngLat` object containing the longitude and latitude\n * @returns `true` if a given zoom and `LngLat` are in the bounds of the world.\n */\nexport function isInBoundsForZoomLngLat(zoom: number, lnglat: LngLat): boolean {\n const {x, y} = MercatorCoordinate.fromLngLat(lnglat);\n return !(\n zoom < MIN_TILE_ZOOM ||\n zoom > MAX_TILE_ZOOM ||\n y < 0 ||\n y >= 1 ||\n x < 0 ||\n x >= 1\n );\n}\n","/*! ieee754. BSD-3-Clause License. Feross Aboukhadijeh */\nexports.read = function (buffer, offset, isLE, mLen, nBytes) {\n var e, m\n var eLen = (nBytes * 8) - mLen - 1\n var eMax = (1 << eLen) - 1\n var eBias = eMax >> 1\n var nBits = -7\n var i = isLE ? (nBytes - 1) : 0\n var d = isLE ? -1 : 1\n var s = buffer[offset + i]\n\n i += d\n\n e = s & ((1 << (-nBits)) - 1)\n s >>= (-nBits)\n nBits += eLen\n for (; nBits > 0; e = (e * 256) + buffer[offset + i], i += d, nBits -= 8) {}\n\n m = e & ((1 << (-nBits)) - 1)\n e >>= (-nBits)\n nBits += mLen\n for (; nBits > 0; m = (m * 256) + buffer[offset + i], i += d, nBits -= 8) {}\n\n if (e === 0) {\n e = 1 - eBias\n } else if (e === eMax) {\n return m ? NaN : ((s ? -1 : 1) * Infinity)\n } else {\n m = m + Math.pow(2, mLen)\n e = e - eBias\n }\n return (s ? -1 : 1) * m * Math.pow(2, e - mLen)\n}\n\nexports.write = function (buffer, value, offset, isLE, mLen, nBytes) {\n var e, m, c\n var eLen = (nBytes * 8) - mLen - 1\n var eMax = (1 << eLen) - 1\n var eBias = eMax >> 1\n var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)\n var i = isLE ? 0 : (nBytes - 1)\n var d = isLE ? 1 : -1\n var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0\n\n value = Math.abs(value)\n\n if (isNaN(value) || value === Infinity) {\n m = isNaN(value) ? 1 : 0\n e = eMax\n } else {\n e = Math.floor(Math.log(value) / Math.LN2)\n if (value * (c = Math.pow(2, -e)) < 1) {\n e--\n c *= 2\n }\n if (e + eBias >= 1) {\n value += rt / c\n } else {\n value += rt * Math.pow(2, 1 - eBias)\n }\n if (value * c >= 2) {\n e++\n c /= 2\n }\n\n if (e + eBias >= eMax) {\n m = 0\n e = eMax\n } else if (e + eBias >= 1) {\n m = ((value * c) - 1) * Math.pow(2, mLen)\n e = e + eBias\n } else {\n m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)\n e = 0\n }\n }\n\n for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}\n\n e = (e << mLen) | m\n eLen += mLen\n for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}\n\n buffer[offset + i - d] |= s * 128\n}\n","'use strict';\n\nmodule.exports = Pbf;\n\nvar ieee754 = require('ieee754');\n\nfunction Pbf(buf) {\n this.buf = ArrayBuffer.isView && ArrayBuffer.isView(buf) ? buf : new Uint8Array(buf || 0);\n this.pos = 0;\n this.type = 0;\n this.length = this.buf.length;\n}\n\nPbf.Varint = 0; // varint: int32, int64, uint32, uint64, sint32, sint64, bool, enum\nPbf.Fixed64 = 1; // 64-bit: double, fixed64, sfixed64\nPbf.Bytes = 2; // length-delimited: string, bytes, embedded messages, packed repeated fields\nPbf.Fixed32 = 5; // 32-bit: float, fixed32, sfixed32\n\nvar SHIFT_LEFT_32 = (1 << 16) * (1 << 16),\n SHIFT_RIGHT_32 = 1 / SHIFT_LEFT_32;\n\n// Threshold chosen based on both benchmarking and knowledge about browser string\n// data structures (which currently switch structure types at 12 bytes or more)\nvar TEXT_DECODER_MIN_LENGTH = 12;\nvar utf8TextDecoder = typeof TextDecoder === 'undefined' ? null : new TextDecoder('utf-8');\n\nPbf.prototype = {\n\n destroy: function() {\n this.buf = null;\n },\n\n // === READING =================================================================\n\n readFields: function(readField, result, end) {\n end = end || this.length;\n\n while (this.pos < end) {\n var val = this.readVarint(),\n tag = val >> 3,\n startPos = this.pos;\n\n this.type = val & 0x7;\n readField(tag, result, this);\n\n if (this.pos === startPos) this.skip(val);\n }\n return result;\n },\n\n readMessage: function(readField, result) {\n return this.readFields(readField, result, this.readVarint() + this.pos);\n },\n\n readFixed32: function() {\n var val = readUInt32(this.buf, this.pos);\n this.pos += 4;\n return val;\n },\n\n readSFixed32: function() {\n var val = readInt32(this.buf, this.pos);\n this.pos += 4;\n return val;\n },\n\n // 64-bit int handling is based on github.com/dpw/node-buffer-more-ints (MIT-licensed)\n\n readFixed64: function() {\n var val = readUInt32(this.buf, this.pos) + readUInt32(this.buf, this.pos + 4) * SHIFT_LEFT_32;\n this.pos += 8;\n return val;\n },\n\n readSFixed64: function() {\n var val = readUInt32(this.buf, this.pos) + readInt32(this.buf, this.pos + 4) * SHIFT_LEFT_32;\n this.pos += 8;\n return val;\n },\n\n readFloat: function() {\n var val = ieee754.read(this.buf, this.pos, true, 23, 4);\n this.pos += 4;\n return val;\n },\n\n readDouble: function() {\n var val = ieee754.read(this.buf, this.pos, true, 52, 8);\n this.pos += 8;\n return val;\n },\n\n readVarint: function(isSigned) {\n var buf = this.buf,\n val, b;\n\n b = buf[this.pos++]; val = b & 0x7f; if (b < 0x80) return val;\n b = buf[this.pos++]; val |= (b & 0x7f) << 7; if (b < 0x80) return val;\n b = buf[this.pos++]; val |= (b & 0x7f) << 14; if (b < 0x80) return val;\n b = buf[this.pos++]; val |= (b & 0x7f) << 21; if (b < 0x80) return val;\n b = buf[this.pos]; val |= (b & 0x0f) << 28;\n\n return readVarintRemainder(val, isSigned, this);\n },\n\n readVarint64: function() { // for compatibility with v2.0.1\n return this.readVarint(true);\n },\n\n readSVarint: function() {\n var num = this.readVarint();\n return num % 2 === 1 ? (num + 1) / -2 : num / 2; // zigzag encoding\n },\n\n readBoolean: function() {\n return Boolean(this.readVarint());\n },\n\n readString: function() {\n var end = this.readVarint() + this.pos;\n var pos = this.pos;\n this.pos = end;\n\n if (end - pos >= TEXT_DECODER_MIN_LENGTH && utf8TextDecoder) {\n // longer strings are fast with the built-in browser TextDecoder API\n return readUtf8TextDecoder(this.buf, pos, end);\n }\n // short strings are fast with our custom implementation\n return readUtf8(this.buf, pos, end);\n },\n\n readBytes: function() {\n var end = this.readVarint() + this.pos,\n buffer = this.buf.subarray(this.pos, end);\n this.pos = end;\n return buffer;\n },\n\n // verbose for performance reasons; doesn't affect gzipped size\n\n readPackedVarint: function(arr, isSigned) {\n if (this.type !== Pbf.Bytes) return arr.push(this.readVarint(isSigned));\n var end = readPackedEnd(this);\n arr = arr || [];\n while (this.pos < end) arr.push(this.readVarint(isSigned));\n return arr;\n },\n readPackedSVarint: function(arr) {\n if (this.type !== Pbf.Bytes) return arr.push(this.readSVarint());\n var end = readPackedEnd(this);\n arr = arr || [];\n while (this.pos < end) arr.push(this.readSVarint());\n return arr;\n },\n readPackedBoolean: function(arr) {\n if (this.type !== Pbf.Bytes) return arr.push(this.readBoolean());\n var end = readPackedEnd(this);\n arr = arr || [];\n while (this.pos < end) arr.push(this.readBoolean());\n return arr;\n },\n readPackedFloat: function(arr) {\n if (this.type !== Pbf.Bytes) return arr.push(this.readFloat());\n var end = readPackedEnd(this);\n arr = arr || [];\n while (this.pos < end) arr.push(this.readFloat());\n return arr;\n },\n readPackedDouble: function(arr) {\n if (this.type !== Pbf.Bytes) return arr.push(this.readDouble());\n var end = readPackedEnd(this);\n arr = arr || [];\n while (this.pos < end) arr.push(this.readDouble());\n return arr;\n },\n readPackedFixed32: function(arr) {\n if (this.type !== Pbf.Bytes) return arr.push(this.readFixed32());\n var end = readPackedEnd(this);\n arr = arr || [];\n while (this.pos < end) arr.push(this.readFixed32());\n return arr;\n },\n readPackedSFixed32: function(arr) {\n if (this.type !== Pbf.Bytes) return arr.push(this.readSFixed32());\n var end = readPackedEnd(this);\n arr = arr || [];\n while (this.pos < end) arr.push(this.readSFixed32());\n return arr;\n },\n readPackedFixed64: function(arr) {\n if (this.type !== Pbf.Bytes) return arr.push(this.readFixed64());\n var end = readPackedEnd(this);\n arr = arr || [];\n while (this.pos < end) arr.push(this.readFixed64());\n return arr;\n },\n readPackedSFixed64: function(arr) {\n if (this.type !== Pbf.Bytes) return arr.push(this.readSFixed64());\n var end = readPackedEnd(this);\n arr = arr || [];\n while (this.pos < end) arr.push(this.readSFixed64());\n return arr;\n },\n\n skip: function(val) {\n var type = val & 0x7;\n if (type === Pbf.Varint) while (this.buf[this.pos++] > 0x7f) {}\n else if (type === Pbf.Bytes) this.pos = this.readVarint() + this.pos;\n else if (type === Pbf.Fixed32) this.pos += 4;\n else if (type === Pbf.Fixed64) this.pos += 8;\n else throw new Error('Unimplemented type: ' + type);\n },\n\n // === WRITING =================================================================\n\n writeTag: function(tag, type) {\n this.writeVarint((tag << 3) | type);\n },\n\n realloc: function(min) {\n var length = this.length || 16;\n\n while (length < this.pos + min) length *= 2;\n\n if (length !== this.length) {\n var buf = new Uint8Array(length);\n buf.set(this.buf);\n this.buf = buf;\n this.length = length;\n }\n },\n\n finish: function() {\n this.length = this.pos;\n this.pos = 0;\n return this.buf.subarray(0, this.length);\n },\n\n writeFixed32: function(val) {\n this.realloc(4);\n writeInt32(this.buf, val, this.pos);\n this.pos += 4;\n },\n\n writeSFixed32: function(val) {\n this.realloc(4);\n writeInt32(this.buf, val, this.pos);\n this.pos += 4;\n },\n\n writeFixed64: function(val) {\n this.realloc(8);\n writeInt32(this.buf, val & -1, this.pos);\n writeInt32(this.buf, Math.floor(val * SHIFT_RIGHT_32), this.pos + 4);\n this.pos += 8;\n },\n\n writeSFixed64: function(val) {\n this.realloc(8);\n writeInt32(this.buf, val & -1, this.pos);\n writeInt32(this.buf, Math.floor(val * SHIFT_RIGHT_32), this.pos + 4);\n this.pos += 8;\n },\n\n writeVarint: function(val) {\n val = +val || 0;\n\n if (val > 0xfffffff || val < 0) {\n writeBigVarint(val, this);\n return;\n }\n\n this.realloc(4);\n\n this.buf[this.pos++] = val & 0x7f | (val > 0x7f ? 0x80 : 0); if (val <= 0x7f) return;\n this.buf[this.pos++] = ((val >>>= 7) & 0x7f) | (val > 0x7f ? 0x80 : 0); if (val <= 0x7f) return;\n this.buf[this.pos++] = ((val >>>= 7) & 0x7f) | (val > 0x7f ? 0x80 : 0); if (val <= 0x7f) return;\n this.buf[this.pos++] = (val >>> 7) & 0x7f;\n },\n\n writeSVarint: function(val) {\n this.writeVarint(val < 0 ? -val * 2 - 1 : val * 2);\n },\n\n writeBoolean: function(val) {\n this.writeVarint(Boolean(val));\n },\n\n writeString: function(str) {\n str = String(str);\n this.realloc(str.length * 4);\n\n this.pos++; // reserve 1 byte for short string length\n\n var startPos = this.pos;\n // write the string directly to the buffer and see how much was written\n this.pos = writeUtf8(this.buf, str, this.pos);\n var len = this.pos - startPos;\n\n if (len >= 0x80) makeRoomForExtraLength(startPos, len, this);\n\n // finally, write the message length in the reserved place and restore the position\n this.pos = startPos - 1;\n this.writeVarint(len);\n this.pos += len;\n },\n\n writeFloat: function(val) {\n this.realloc(4);\n ieee754.write(this.buf, val, this.pos, true, 23, 4);\n this.pos += 4;\n },\n\n writeDouble: function(val) {\n this.realloc(8);\n ieee754.write(this.buf, val, this.pos, true, 52, 8);\n this.pos += 8;\n },\n\n writeBytes: function(buffer) {\n var len = buffer.length;\n this.writeVarint(len);\n this.realloc(len);\n for (var i = 0; i < len; i++) this.buf[this.pos++] = buffer[i];\n },\n\n writeRawMessage: function(fn, obj) {\n this.pos++; // reserve 1 byte for short message length\n\n // write the message directly to the buffer and see how much was written\n var startPos = this.pos;\n fn(obj, this);\n var len = this.pos - startPos;\n\n if (len >= 0x80) makeRoomForExtraLength(startPos, len, this);\n\n // finally, write the message length in the reserved place and restore the position\n this.pos = startPos - 1;\n this.writeVarint(len);\n this.pos += len;\n },\n\n writeMessage: function(tag, fn, obj) {\n this.writeTag(tag, Pbf.Bytes);\n this.writeRawMessage(fn, obj);\n },\n\n writePackedVarint: function(tag, arr) { if (arr.length) this.writeMessage(tag, writePackedVarint, arr); },\n writePackedSVarint: function(tag, arr) { if (arr.length) this.writeMessage(tag, writePackedSVarint, arr); },\n writePackedBoolean: function(tag, arr) { if (arr.length) this.writeMessage(tag, writePackedBoolean, arr); },\n writePackedFloat: function(tag, arr) { if (arr.length) this.writeMessage(tag, writePackedFloat, arr); },\n writePackedDouble: function(tag, arr) { if (arr.length) this.writeMessage(tag, writePackedDouble, arr); },\n writePackedFixed32: function(tag, arr) { if (arr.length) this.writeMessage(tag, writePackedFixed32, arr); },\n writePackedSFixed32: function(tag, arr) { if (arr.length) this.writeMessage(tag, writePackedSFixed32, arr); },\n writePackedFixed64: function(tag, arr) { if (arr.length) this.writeMessage(tag, writePackedFixed64, arr); },\n writePackedSFixed64: function(tag, arr) { if (arr.length) this.writeMessage(tag, writePackedSFixed64, arr); },\n\n writeBytesField: function(tag, buffer) {\n this.writeTag(tag, Pbf.Bytes);\n this.writeBytes(buffer);\n },\n writeFixed32Field: function(tag, val) {\n this.writeTag(tag, Pbf.Fixed32);\n this.writeFixed32(val);\n },\n writeSFixed32Field: function(tag, val) {\n this.writeTag(tag, Pbf.Fixed32);\n this.writeSFixed32(val);\n },\n writeFixed64Field: function(tag, val) {\n this.writeTag(tag, Pbf.Fixed64);\n this.writeFixed64(val);\n },\n writeSFixed64Field: function(tag, val) {\n this.writeTag(tag, Pbf.Fixed64);\n this.writeSFixed64(val);\n },\n writeVarintField: function(tag, val) {\n this.writeTag(tag, Pbf.Varint);\n this.writeVarint(val);\n },\n writeSVarintField: function(tag, val) {\n this.writeTag(tag, Pbf.Varint);\n this.writeSVarint(val);\n },\n writeStringField: function(tag, str) {\n this.writeTag(tag, Pbf.Bytes);\n this.writeString(str);\n },\n writeFloatField: function(tag, val) {\n this.writeTag(tag, Pbf.Fixed32);\n this.writeFloat(val);\n },\n writeDoubleField: function(tag, val) {\n this.writeTag(tag, Pbf.Fixed64);\n this.writeDouble(val);\n },\n writeBooleanField: function(tag, val) {\n this.writeVarintField(tag, Boolean(val));\n }\n};\n\nfunction readVarintRemainder(l, s, p) {\n var buf = p.buf,\n h, b;\n\n b = buf[p.pos++]; h = (b & 0x70) >> 4; if (b < 0x80) return toNum(l, h, s);\n b = buf[p.pos++]; h |= (b & 0x7f) << 3; if (b < 0x80) return toNum(l, h, s);\n b = buf[p.pos++]; h |= (b & 0x7f) << 10; if (b < 0x80) return toNum(l, h, s);\n b = buf[p.pos++]; h |= (b & 0x7f) << 17; if (b < 0x80) return toNum(l, h, s);\n b = buf[p.pos++]; h |= (b & 0x7f) << 24; if (b < 0x80) return toNum(l, h, s);\n b = buf[p.pos++]; h |= (b & 0x01) << 31; if (b < 0x80) return toNum(l, h, s);\n\n throw new Error('Expected varint not more than 10 bytes');\n}\n\nfunction readPackedEnd(pbf) {\n return pbf.type === Pbf.Bytes ?\n pbf.readVarint() + pbf.pos : pbf.pos + 1;\n}\n\nfunction toNum(low, high, isSigned) {\n if (isSigned) {\n return high * 0x100000000 + (low >>> 0);\n }\n\n return ((high >>> 0) * 0x100000000) + (low >>> 0);\n}\n\nfunction writeBigVarint(val, pbf) {\n var low, high;\n\n if (val >= 0) {\n low = (val % 0x100000000) | 0;\n high = (val / 0x100000000) | 0;\n } else {\n low = ~(-val % 0x100000000);\n high = ~(-val / 0x100000000);\n\n if (low ^ 0xffffffff) {\n low = (low + 1) | 0;\n } else {\n low = 0;\n high = (high + 1) | 0;\n }\n }\n\n if (val >= 0x10000000000000000 || val < -0x10000000000000000) {\n throw new Error('Given varint doesn\\'t fit into 10 bytes');\n }\n\n pbf.realloc(10);\n\n writeBigVarintLow(low, high, pbf);\n writeBigVarintHigh(high, pbf);\n}\n\nfunction writeBigVarintLow(low, high, pbf) {\n pbf.buf[pbf.pos++] = low & 0x7f | 0x80; low >>>= 7;\n pbf.buf[pbf.pos++] = low & 0x7f | 0x80; low >>>= 7;\n pbf.buf[pbf.pos++] = low & 0x7f | 0x80; low >>>= 7;\n pbf.buf[pbf.pos++] = low & 0x7f | 0x80; low >>>= 7;\n pbf.buf[pbf.pos] = low & 0x7f;\n}\n\nfunction writeBigVarintHigh(high, pbf) {\n var lsb = (high & 0x07) << 4;\n\n pbf.buf[pbf.pos++] |= lsb | ((high >>>= 3) ? 0x80 : 0); if (!high) return;\n pbf.buf[pbf.pos++] = high & 0x7f | ((high >>>= 7) ? 0x80 : 0); if (!high) return;\n pbf.buf[pbf.pos++] = high & 0x7f | ((high >>>= 7) ? 0x80 : 0); if (!high) return;\n pbf.buf[pbf.pos++] = high & 0x7f | ((high >>>= 7) ? 0x80 : 0); if (!high) return;\n pbf.buf[pbf.pos++] = high & 0x7f | ((high >>>= 7) ? 0x80 : 0); if (!high) return;\n pbf.buf[pbf.pos++] = high & 0x7f;\n}\n\nfunction makeRoomForExtraLength(startPos, len, pbf) {\n var extraLen =\n len <= 0x3fff ? 1 :\n len <= 0x1fffff ? 2 :\n len <= 0xfffffff ? 3 : Math.floor(Math.log(len) / (Math.LN2 * 7));\n\n // if 1 byte isn't enough for encoding message length, shift the data to the right\n pbf.realloc(extraLen);\n for (var i = pbf.pos - 1; i >= startPos; i--) pbf.buf[i + extraLen] = pbf.buf[i];\n}\n\nfunction writePackedVarint(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeVarint(arr[i]); }\nfunction writePackedSVarint(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeSVarint(arr[i]); }\nfunction writePackedFloat(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeFloat(arr[i]); }\nfunction writePackedDouble(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeDouble(arr[i]); }\nfunction writePackedBoolean(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeBoolean(arr[i]); }\nfunction writePackedFixed32(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeFixed32(arr[i]); }\nfunction writePackedSFixed32(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeSFixed32(arr[i]); }\nfunction writePackedFixed64(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeFixed64(arr[i]); }\nfunction writePackedSFixed64(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeSFixed64(arr[i]); }\n\n// Buffer code below from https://github.com/feross/buffer, MIT-licensed\n\nfunction readUInt32(buf, pos) {\n return ((buf[pos]) |\n (buf[pos + 1] << 8) |\n (buf[pos + 2] << 16)) +\n (buf[pos + 3] * 0x1000000);\n}\n\nfunction writeInt32(buf, val, pos) {\n buf[pos] = val;\n buf[pos + 1] = (val >>> 8);\n buf[pos + 2] = (val >>> 16);\n buf[pos + 3] = (val >>> 24);\n}\n\nfunction readInt32(buf, pos) {\n return ((buf[pos]) |\n (buf[pos + 1] << 8) |\n (buf[pos + 2] << 16)) +\n (buf[pos + 3] << 24);\n}\n\nfunction readUtf8(buf, pos, end) {\n var str = '';\n var i = pos;\n\n while (i < end) {\n var b0 = buf[i];\n var c = null; // codepoint\n var bytesPerSequence =\n b0 > 0xEF ? 4 :\n b0 > 0xDF ? 3 :\n b0 > 0xBF ? 2 : 1;\n\n if (i + bytesPerSequence > end) break;\n\n var b1, b2, b3;\n\n if (bytesPerSequence === 1) {\n if (b0 < 0x80) {\n c = b0;\n }\n } else if (bytesPerSequence === 2) {\n b1 = buf[i + 1];\n if ((b1 & 0xC0) === 0x80) {\n c = (b0 & 0x1F) << 0x6 | (b1 & 0x3F);\n if (c <= 0x7F) {\n c = null;\n }\n }\n } else if (bytesPerSequence === 3) {\n b1 = buf[i + 1];\n b2 = buf[i + 2];\n if ((b1 & 0xC0) === 0x80 && (b2 & 0xC0) === 0x80) {\n c = (b0 & 0xF) << 0xC | (b1 & 0x3F) << 0x6 | (b2 & 0x3F);\n if (c <= 0x7FF || (c >= 0xD800 && c <= 0xDFFF)) {\n c = null;\n }\n }\n } else if (bytesPerSequence === 4) {\n b1 = buf[i + 1];\n b2 = buf[i + 2];\n b3 = buf[i + 3];\n if ((b1 & 0xC0) === 0x80 && (b2 & 0xC0) === 0x80 && (b3 & 0xC0) === 0x80) {\n c = (b0 & 0xF) << 0x12 | (b1 & 0x3F) << 0xC | (b2 & 0x3F) << 0x6 | (b3 & 0x3F);\n if (c <= 0xFFFF || c >= 0x110000) {\n c = null;\n }\n }\n }\n\n if (c === null) {\n c = 0xFFFD;\n bytesPerSequence = 1;\n\n } else if (c > 0xFFFF) {\n c -= 0x10000;\n str += String.fromCharCode(c >>> 10 & 0x3FF | 0xD800);\n c = 0xDC00 | c & 0x3FF;\n }\n\n str += String.fromCharCode(c);\n i += bytesPerSequence;\n }\n\n return str;\n}\n\nfunction readUtf8TextDecoder(buf, pos, end) {\n return utf8TextDecoder.decode(buf.subarray(pos, end));\n}\n\nfunction writeUtf8(buf, str, pos) {\n for (var i = 0, c, lead; i < str.length; i++) {\n c = str.charCodeAt(i); // code point\n\n if (c > 0xD7FF && c < 0xE000) {\n if (lead) {\n if (c < 0xDC00) {\n buf[pos++] = 0xEF;\n buf[pos++] = 0xBF;\n buf[pos++] = 0xBD;\n lead = c;\n continue;\n } else {\n c = lead - 0xD800 << 10 | c - 0xDC00 | 0x10000;\n lead = null;\n }\n } else {\n if (c > 0xDBFF || (i + 1 === str.length)) {\n buf[pos++] = 0xEF;\n buf[pos++] = 0xBF;\n buf[pos++] = 0xBD;\n } else {\n lead = c;\n }\n continue;\n }\n } else if (lead) {\n buf[pos++] = 0xEF;\n buf[pos++] = 0xBF;\n buf[pos++] = 0xBD;\n lead = null;\n }\n\n if (c < 0x80) {\n buf[pos++] = c;\n } else {\n if (c < 0x800) {\n buf[pos++] = c >> 0x6 | 0xC0;\n } else {\n if (c < 0x10000) {\n buf[pos++] = c >> 0xC | 0xE0;\n } else {\n buf[pos++] = c >> 0x12 | 0xF0;\n buf[pos++] = c >> 0xC & 0x3F | 0x80;\n }\n buf[pos++] = c >> 0x6 & 0x3F | 0x80;\n }\n buf[pos++] = c & 0x3F | 0x80;\n }\n }\n return pos;\n}\n","'use strict';\n\nvar Point = require('@mapbox/point-geometry');\n\nmodule.exports = VectorTileFeature;\n\nfunction VectorTileFeature(pbf, end, extent, keys, values) {\n // Public\n this.properties = {};\n this.extent = extent;\n this.type = 0;\n\n // Private\n this._pbf = pbf;\n this._geometry = -1;\n this._keys = keys;\n this._values = values;\n\n pbf.readFields(readFeature, this, end);\n}\n\nfunction readFeature(tag, feature, pbf) {\n if (tag == 1) feature.id = pbf.readVarint();\n else if (tag == 2) readTag(pbf, feature);\n else if (tag == 3) feature.type = pbf.readVarint();\n else if (tag == 4) feature._geometry = pbf.pos;\n}\n\nfunction readTag(pbf, feature) {\n var end = pbf.readVarint() + pbf.pos;\n\n while (pbf.pos < end) {\n var key = feature._keys[pbf.readVarint()],\n value = feature._values[pbf.readVarint()];\n feature.properties[key] = value;\n }\n}\n\nVectorTileFeature.types = ['Unknown', 'Point', 'LineString', 'Polygon'];\n\nVectorTileFeature.prototype.loadGeometry = function() {\n var pbf = this._pbf;\n pbf.pos = this._geometry;\n\n var end = pbf.readVarint() + pbf.pos,\n cmd = 1,\n length = 0,\n x = 0,\n y = 0,\n lines = [],\n line;\n\n while (pbf.pos < end) {\n if (length <= 0) {\n var cmdLen = pbf.readVarint();\n cmd = cmdLen & 0x7;\n length = cmdLen >> 3;\n }\n\n length--;\n\n if (cmd === 1 || cmd === 2) {\n x += pbf.readSVarint();\n y += pbf.readSVarint();\n\n if (cmd === 1) { // moveTo\n if (line) lines.push(line);\n line = [];\n }\n\n line.push(new Point(x, y));\n\n } else if (cmd === 7) {\n\n // Workaround for https://github.com/mapbox/mapnik-vector-tile/issues/90\n if (line) {\n line.push(line[0].clone()); // closePolygon\n }\n\n } else {\n throw new Error('unknown command ' + cmd);\n }\n }\n\n if (line) lines.push(line);\n\n return lines;\n};\n\nVectorTileFeature.prototype.bbox = function() {\n var pbf = this._pbf;\n pbf.pos = this._geometry;\n\n var end = pbf.readVarint() + pbf.pos,\n cmd = 1,\n length = 0,\n x = 0,\n y = 0,\n x1 = Infinity,\n x2 = -Infinity,\n y1 = Infinity,\n y2 = -Infinity;\n\n while (pbf.pos < end) {\n if (length <= 0) {\n var cmdLen = pbf.readVarint();\n cmd = cmdLen & 0x7;\n length = cmdLen >> 3;\n }\n\n length--;\n\n if (cmd === 1 || cmd === 2) {\n x += pbf.readSVarint();\n y += pbf.readSVarint();\n if (x < x1) x1 = x;\n if (x > x2) x2 = x;\n if (y < y1) y1 = y;\n if (y > y2) y2 = y;\n\n } else if (cmd !== 7) {\n throw new Error('unknown command ' + cmd);\n }\n }\n\n return [x1, y1, x2, y2];\n};\n\nVectorTileFeature.prototype.toGeoJSON = function(x, y, z) {\n var size = this.extent * Math.pow(2, z),\n x0 = this.extent * x,\n y0 = this.extent * y,\n coords = this.loadGeometry(),\n type = VectorTileFeature.types[this.type],\n i, j;\n\n function project(line) {\n for (var j = 0; j < line.length; j++) {\n var p = line[j], y2 = 180 - (p.y + y0) * 360 / size;\n line[j] = [\n (p.x + x0) * 360 / size - 180,\n 360 / Math.PI * Math.atan(Math.exp(y2 * Math.PI / 180)) - 90\n ];\n }\n }\n\n switch (this.type) {\n case 1:\n var points = [];\n for (i = 0; i < coords.length; i++) {\n points[i] = coords[i][0];\n }\n coords = points;\n project(coords);\n break;\n\n case 2:\n for (i = 0; i < coords.length; i++) {\n project(coords[i]);\n }\n break;\n\n case 3:\n coords = classifyRings(coords);\n for (i = 0; i < coords.length; i++) {\n for (j = 0; j < coords[i].length; j++) {\n project(coords[i][j]);\n }\n }\n break;\n }\n\n if (coords.length === 1) {\n coords = coords[0];\n } else {\n type = 'Multi' + type;\n }\n\n var result = {\n type: \"Feature\",\n geometry: {\n type: type,\n coordinates: coords\n },\n properties: this.properties\n };\n\n if ('id' in this) {\n result.id = this.id;\n }\n\n return result;\n};\n\n// classifies an array of rings into polygons with outer rings and holes\n\nfunction classifyRings(rings) {\n var len = rings.length;\n\n if (len <= 1) return [rings];\n\n var polygons = [],\n polygon,\n ccw;\n\n for (var i = 0; i < len; i++) {\n var area = signedArea(rings[i]);\n if (area === 0) continue;\n\n if (ccw === undefined) ccw = area < 0;\n\n if (ccw === area < 0) {\n if (polygon) polygons.push(polygon);\n polygon = [rings[i]];\n\n } else {\n polygon.push(rings[i]);\n }\n }\n if (polygon) polygons.push(polygon);\n\n return polygons;\n}\n\nfunction signedArea(ring) {\n var sum = 0;\n for (var i = 0, len = ring.length, j = len - 1, p1, p2; i < len; j = i++) {\n p1 = ring[i];\n p2 = ring[j];\n sum += (p2.x - p1.x) * (p1.y + p2.y);\n }\n return sum;\n}\n","'use strict';\n\nvar VectorTileFeature = require('./vectortilefeature.js');\n\nmodule.exports = VectorTileLayer;\n\nfunction VectorTileLayer(pbf, end) {\n // Public\n this.version = 1;\n this.name = null;\n this.extent = 4096;\n this.length = 0;\n\n // Private\n this._pbf = pbf;\n this._keys = [];\n this._values = [];\n this._features = [];\n\n pbf.readFields(readLayer, this, end);\n\n this.length = this._features.length;\n}\n\nfunction readLayer(tag, layer, pbf) {\n if (tag === 15) layer.version = pbf.readVarint();\n else if (tag === 1) layer.name = pbf.readString();\n else if (tag === 5) layer.extent = pbf.readVarint();\n else if (tag === 2) layer._features.push(pbf.pos);\n else if (tag === 3) layer._keys.push(pbf.readString());\n else if (tag === 4) layer._values.push(readValueMessage(pbf));\n}\n\nfunction readValueMessage(pbf) {\n var value = null,\n end = pbf.readVarint() + pbf.pos;\n\n while (pbf.pos < end) {\n var tag = pbf.readVarint() >> 3;\n\n value = tag === 1 ? pbf.readString() :\n tag === 2 ? pbf.readFloat() :\n tag === 3 ? pbf.readDouble() :\n tag === 4 ? pbf.readVarint64() :\n tag === 5 ? pbf.readVarint() :\n tag === 6 ? pbf.readSVarint() :\n tag === 7 ? pbf.readBoolean() : null;\n }\n\n return value;\n}\n\n// return feature `i` from this layer as a `VectorTileFeature`\nVectorTileLayer.prototype.feature = function(i) {\n if (i < 0 || i >= this._features.length) throw new Error('feature index out of bounds');\n\n this._pbf.pos = this._features[i];\n\n var end = this._pbf.readVarint() + this._pbf.pos;\n return new VectorTileFeature(this._pbf, end, this.extent, this._keys, this._values);\n};\n","module.exports.VectorTile = require('./lib/vectortile.js');\nmodule.exports.VectorTileFeature = require('./lib/vectortilefeature.js');\nmodule.exports.VectorTileLayer = require('./lib/vectortilelayer.js');\n","'use strict';\n\nvar VectorTileLayer = require('./vectortilelayer');\n\nmodule.exports = VectorTile;\n\nfunction VectorTile(pbf, end) {\n this.layers = pbf.readFields(readTile, {}, end);\n}\n\nfunction readTile(tag, layers, pbf) {\n if (tag === 3) {\n var layer = new VectorTileLayer(pbf, pbf.readVarint() + pbf.pos);\n if (layer.length) layers[layer.name] = layer;\n }\n}\n\n","import {extend, type Subscription} from './util';\n\n/**\n * A listener method used as a callback to events\n */\nexport type Listener = (a: any) => any;\n\ntype Listeners = {[_: string]: Array};\n\nfunction _addEventListener(type: string, listener: Listener, listenerList: Listeners) {\n const listenerExists = listenerList[type] && listenerList[type].indexOf(listener) !== -1;\n if (!listenerExists) {\n listenerList[type] = listenerList[type] || [];\n listenerList[type].push(listener);\n }\n}\n\nfunction _removeEventListener(type: string, listener: Listener, listenerList: Listeners) {\n if (listenerList && listenerList[type]) {\n const index = listenerList[type].indexOf(listener);\n if (index !== -1) {\n listenerList[type].splice(index, 1);\n }\n }\n}\n\n/**\n * The event class\n */\nexport class Event {\n readonly type: string;\n\n constructor(type: string, data: any = {}) {\n extend(this, data);\n this.type = type;\n }\n}\n\ninterface ErrorLike {\n message: string;\n}\n\n/**\n * An error event\n */\nexport class ErrorEvent extends Event {\n error: ErrorLike;\n\n constructor(error: ErrorLike, data: any = {}) {\n super('error', extend({error}, data));\n }\n}\n\n/**\n * Methods mixed in to other classes for event capabilities.\n *\n * @group Event Related\n */\nexport class Evented {\n _listeners: Listeners;\n _oneTimeListeners: Listeners;\n _eventedParent: Evented;\n _eventedParentData: any | (() => any);\n\n /**\n * Adds a listener to a specified event type.\n *\n * @param type - The event type to add a listen for.\n * @param listener - The function to be called when the event is fired.\n * The listener function is called with the data object passed to `fire`,\n * extended with `target` and `type` properties.\n */\n on(type: string, listener: Listener): Subscription {\n this._listeners = this._listeners || {};\n _addEventListener(type, listener, this._listeners);\n\n return {\n unsubscribe: () => {\n this.off(type, listener);\n }\n };\n }\n\n /**\n * Removes a previously registered event listener.\n *\n * @param type - The event type to remove listeners for.\n * @param listener - The listener function to remove.\n */\n off(type: string, listener: Listener) {\n _removeEventListener(type, listener, this._listeners);\n _removeEventListener(type, listener, this._oneTimeListeners);\n\n return this;\n }\n\n /**\n * Adds a listener that will be called only once to a specified event type.\n *\n * The listener will be called first time the event fires after the listener is registered.\n *\n * @param type - The event type to listen for.\n * @param listener - The function to be called when the event is fired the first time.\n * @returns `this` or a promise if a listener is not provided\n */\n once(type: string, listener?: Listener): this | Promise {\n if (!listener) {\n return new Promise((resolve) => this.once(type, resolve));\n }\n this._oneTimeListeners = this._oneTimeListeners || {};\n _addEventListener(type, listener, this._oneTimeListeners);\n\n return this;\n }\n\n fire(event: Event | string, properties?: any) {\n // Compatibility with (type: string, properties: Object) signature from previous versions.\n // See https://github.com/mapbox/mapbox-gl-js/issues/6522,\n // https://github.com/mapbox/mapbox-gl-draw/issues/766\n if (typeof event === 'string') {\n event = new Event(event, properties || {});\n }\n\n const type = event.type;\n\n if (this.listens(type)) {\n (event as any).target = this;\n\n // make sure adding or removing listeners inside other listeners won't cause an infinite loop\n const listeners = this._listeners && this._listeners[type] ? this._listeners[type].slice() : [];\n for (const listener of listeners) {\n listener.call(this, event);\n }\n\n const oneTimeListeners = this._oneTimeListeners && this._oneTimeListeners[type] ? this._oneTimeListeners[type].slice() : [];\n for (const listener of oneTimeListeners) {\n _removeEventListener(type, listener, this._oneTimeListeners);\n listener.call(this, event);\n }\n\n const parent = this._eventedParent;\n if (parent) {\n extend(\n event,\n typeof this._eventedParentData === 'function' ? this._eventedParentData() : this._eventedParentData\n );\n parent.fire(event);\n }\n\n // To ensure that no error events are dropped, print them to the\n // console if they have no listeners.\n } else if (event instanceof ErrorEvent) {\n console.error(event.error);\n }\n\n return this;\n }\n\n /**\n * Returns a true if this instance of Evented or any forwardeed instances of Evented have a listener for the specified type.\n *\n * @param type - The event type\n * @returns `true` if there is at least one registered listener for specified event type, `false` otherwise\n */\n listens(type: string): boolean {\n return (\n (this._listeners && this._listeners[type] && this._listeners[type].length > 0) ||\n (this._oneTimeListeners && this._oneTimeListeners[type] && this._oneTimeListeners[type].length > 0) ||\n (this._eventedParent && this._eventedParent.listens(type))\n );\n }\n\n /**\n * Bubble all events fired by this instance of Evented to this parent instance of Evented.\n */\n setEventedParent(parent?: Evented | null, data?: any | (() => any)) {\n this._eventedParent = parent;\n this._eventedParentData = data;\n\n return this;\n }\n}\n","import {validateStyleMin} from '@maplibre/maplibre-gl-style-spec';\nimport {ErrorEvent} from '../util/evented';\n\nimport type {Evented} from '../util/evented';\n\ntype ValidationError = {\n message: string;\n line: number;\n identifier?: string;\n};\n\nexport type Validator = (a: any) => ReadonlyArray;\n\ntype ValidateStyle = {\n source: Validator;\n sprite: Validator;\n glyphs: Validator;\n layer: Validator;\n light: Validator;\n sky: Validator;\n terrain: Validator;\n filter: Validator;\n paintProperty: Validator;\n layoutProperty: Validator;\n (b: any, a?: any | null): ReadonlyArray;\n};\n\nexport const validateStyle = (validateStyleMin as unknown as ValidateStyle);\n\nexport const validateSource = validateStyle.source;\nexport const validateLight = validateStyle.light;\nexport const validateSky = validateStyle.sky;\nexport const validateTerrain = validateStyle.terrain;\nexport const validateFilter = validateStyle.filter;\nexport const validatePaintProperty = validateStyle.paintProperty;\nexport const validateLayoutProperty = validateStyle.layoutProperty;\n\nexport function emitValidationErrors(\n emitter: Evented,\n errors?: ReadonlyArray<{\n message: string;\n identifier?: string;\n }> | null\n): boolean {\n let hasErrors = false;\n if (errors && errors.length) {\n for (const error of errors) {\n emitter.fire(new ErrorEvent(new Error(error.message)));\n hasErrors = true;\n }\n }\n return hasErrors;\n}\n","export class ZoomHistory {\n lastZoom: number;\n lastFloorZoom: number;\n lastIntegerZoom: number;\n lastIntegerZoomTime: number;\n first: boolean;\n\n constructor() {\n this.first = true;\n }\n\n update(z: number, now: number) {\n const floorZ = Math.floor(z);\n\n if (this.first) {\n this.first = false;\n this.lastIntegerZoom = floorZ;\n this.lastIntegerZoomTime = 0;\n this.lastZoom = z;\n this.lastFloorZoom = floorZ;\n return true;\n }\n\n if (this.lastFloorZoom > floorZ) {\n this.lastIntegerZoom = floorZ + 1;\n this.lastIntegerZoomTime = now;\n } else if (this.lastFloorZoom < floorZ) {\n this.lastIntegerZoom = floorZ;\n this.lastIntegerZoomTime = now;\n }\n\n if (z !== this.lastZoom) {\n this.lastZoom = z;\n this.lastFloorZoom = floorZ;\n return true;\n }\n\n return false;\n }\n}\n","// The following table comes from .\n// Keep it synchronized with .\n\ntype UnicodeBlockLookup = {[key: string]: (char: number) => boolean};\n\nexport const unicodeBlockLookup: UnicodeBlockLookup = {\n // 'Basic Latin': (char) => char >= 0x0000 && char <= 0x007F,\n 'Latin-1 Supplement': (char) => char >= 0x0080 && char <= 0x00FF,\n // 'Latin Extended-A': (char) => char >= 0x0100 && char <= 0x017F,\n // 'Latin Extended-B': (char) => char >= 0x0180 && char <= 0x024F,\n // 'IPA Extensions': (char) => char >= 0x0250 && char <= 0x02AF,\n // 'Spacing Modifier Letters': (char) => char >= 0x02B0 && char <= 0x02FF,\n // 'Combining Diacritical Marks': (char) => char >= 0x0300 && char <= 0x036F,\n // 'Greek and Coptic': (char) => char >= 0x0370 && char <= 0x03FF,\n // 'Cyrillic': (char) => char >= 0x0400 && char <= 0x04FF,\n // 'Cyrillic Supplement': (char) => char >= 0x0500 && char <= 0x052F,\n // 'Armenian': (char) => char >= 0x0530 && char <= 0x058F,\n //'Hebrew': (char) => char >= 0x0590 && char <= 0x05FF,\n // 'Arabic': (char) => char >= 0x0600 && char <= 0x06FF,\n //'Syriac': (char) => char >= 0x0700 && char <= 0x074F,\n // 'Arabic Supplement': (char) => char >= 0x0750 && char <= 0x077F,\n // 'Thaana': (char) => char >= 0x0780 && char <= 0x07BF,\n // 'NKo': (char) => char >= 0x07C0 && char <= 0x07FF,\n // 'Samaritan': (char) => char >= 0x0800 && char <= 0x083F,\n // 'Mandaic': (char) => char >= 0x0840 && char <= 0x085F,\n // 'Syriac Supplement': (char) => char >= 0x0860 && char <= 0x086F,\n // 'Arabic Extended-B': (char) => char >= 0x0870 && char <= 0x089F,\n // 'Arabic Extended-A': (char) => char >= 0x08A0 && char <= 0x08FF,\n // 'Devanagari': (char) => char >= 0x0900 && char <= 0x097F,\n // 'Bengali': (char) => char >= 0x0980 && char <= 0x09FF,\n // 'Gurmukhi': (char) => char >= 0x0A00 && char <= 0x0A7F,\n // 'Gujarati': (char) => char >= 0x0A80 && char <= 0x0AFF,\n // 'Oriya': (char) => char >= 0x0B00 && char <= 0x0B7F,\n // 'Tamil': (char) => char >= 0x0B80 && char <= 0x0BFF,\n // 'Telugu': (char) => char >= 0x0C00 && char <= 0x0C7F,\n // 'Kannada': (char) => char >= 0x0C80 && char <= 0x0CFF,\n // 'Malayalam': (char) => char >= 0x0D00 && char <= 0x0D7F,\n // 'Sinhala': (char) => char >= 0x0D80 && char <= 0x0DFF,\n // 'Thai': (char) => char >= 0x0E00 && char <= 0x0E7F,\n // 'Lao': (char) => char >= 0x0E80 && char <= 0x0EFF,\n // 'Tibetan': (char) => char >= 0x0F00 && char <= 0x0FFF,\n // 'Myanmar': (char) => char >= 0x1000 && char <= 0x109F,\n // 'Georgian': (char) => char >= 0x10A0 && char <= 0x10FF,\n 'Hangul Jamo': (char) => char >= 0x1100 && char <= 0x11FF,\n // 'Ethiopic': (char) => char >= 0x1200 && char <= 0x137F,\n // 'Ethiopic Supplement': (char) => char >= 0x1380 && char <= 0x139F,\n // 'Cherokee': (char) => char >= 0x13A0 && char <= 0x13FF,\n // 'Unified Canadian Aboriginal Syllabics': (char) => char >= 0x1400 && char <= 0x167F,\n // 'Ogham': (char) => char >= 0x1680 && char <= 0x169F,\n // 'Runic': (char) => char >= 0x16A0 && char <= 0x16FF,\n // 'Tagalog': (char) => char >= 0x1700 && char <= 0x171F,\n // 'Hanunoo': (char) => char >= 0x1720 && char <= 0x173F,\n // 'Buhid': (char) => char >= 0x1740 && char <= 0x175F,\n // 'Tagbanwa': (char) => char >= 0x1760 && char <= 0x177F,\n 'Khmer': (char) => char >= 0x1780 && char <= 0x17FF,\n // 'Mongolian': (char) => char >= 0x1800 && char <= 0x18AF,\n // 'Unified Canadian Aboriginal Syllabics Extended': (char) => char >= 0x18B0 && char <= 0x18FF,\n // 'Limbu': (char) => char >= 0x1900 && char <= 0x194F,\n // 'Tai Le': (char) => char >= 0x1950 && char <= 0x197F,\n // 'New Tai Lue': (char) => char >= 0x1980 && char <= 0x19DF,\n // 'Khmer Symbols': (char) => char >= 0x19E0 && char <= 0x19FF,\n // 'Buginese': (char) => char >= 0x1A00 && char <= 0x1A1F,\n // 'Tai Tham': (char) => char >= 0x1A20 && char <= 0x1AAF,\n // 'Combining Diacritical Marks Extended': (char) => char >= 0x1AB0 && char <= 0x1AFF,\n // 'Balinese': (char) => char >= 0x1B00 && char <= 0x1B7F,\n // 'Sundanese': (char) => char >= 0x1B80 && char <= 0x1BBF,\n // 'Batak': (char) => char >= 0x1BC0 && char <= 0x1BFF,\n // 'Lepcha': (char) => char >= 0x1C00 && char <= 0x1C4F,\n // 'Ol Chiki': (char) => char >= 0x1C50 && char <= 0x1C7F,\n // 'Cyrillic Extended-C': (char) => char >= 0x1C80 && char <= 0x1C8F,\n // 'Georgian Extended': (char) => char >= 0x1C90 && char <= 0x1CBF,\n // 'Sundanese Supplement': (char) => char >= 0x1CC0 && char <= 0x1CCF,\n // 'Vedic Extensions': (char) => char >= 0x1CD0 && char <= 0x1CFF,\n // 'Phonetic Extensions': (char) => char >= 0x1D00 && char <= 0x1D7F,\n // 'Phonetic Extensions Supplement': (char) => char >= 0x1D80 && char <= 0x1DBF,\n // 'Combining Diacritical Marks Supplement': (char) => char >= 0x1DC0 && char <= 0x1DFF,\n // 'Latin Extended Additional': (char) => char >= 0x1E00 && char <= 0x1EFF,\n // 'Greek Extended': (char) => char >= 0x1F00 && char <= 0x1FFF,\n 'General Punctuation': (char) => char >= 0x2000 && char <= 0x206F,\n // 'Superscripts and Subscripts': (char) => char >= 0x2070 && char <= 0x209F,\n // 'Currency Symbols': (char) => char >= 0x20A0 && char <= 0x20CF,\n // 'Combining Diacritical Marks for Symbols': (char) => char >= 0x20D0 && char <= 0x20FF,\n 'Letterlike Symbols': (char) => char >= 0x2100 && char <= 0x214F,\n 'Number Forms': (char) => char >= 0x2150 && char <= 0x218F,\n // 'Arrows': (char) => char >= 0x2190 && char <= 0x21FF,\n // 'Mathematical Operators': (char) => char >= 0x2200 && char <= 0x22FF,\n 'Miscellaneous Technical': (char) => char >= 0x2300 && char <= 0x23FF,\n 'Control Pictures': (char) => char >= 0x2400 && char <= 0x243F,\n 'Optical Character Recognition': (char) => char >= 0x2440 && char <= 0x245F,\n 'Enclosed Alphanumerics': (char) => char >= 0x2460 && char <= 0x24FF,\n // 'Box Drawing': (char) => char >= 0x2500 && char <= 0x257F,\n // 'Block Elements': (char) => char >= 0x2580 && char <= 0x259F,\n 'Geometric Shapes': (char) => char >= 0x25A0 && char <= 0x25FF,\n 'Miscellaneous Symbols': (char) => char >= 0x2600 && char <= 0x26FF,\n // 'Dingbats': (char) => char >= 0x2700 && char <= 0x27BF,\n // 'Miscellaneous Mathematical Symbols-A': (char) => char >= 0x27C0 && char <= 0x27EF,\n // 'Supplemental Arrows-A': (char) => char >= 0x27F0 && char <= 0x27FF,\n // 'Braille Patterns': (char) => char >= 0x2800 && char <= 0x28FF,\n // 'Supplemental Arrows-B': (char) => char >= 0x2900 && char <= 0x297F,\n // 'Miscellaneous Mathematical Symbols-B': (char) => char >= 0x2980 && char <= 0x29FF,\n // 'Supplemental Mathematical Operators': (char) => char >= 0x2A00 && char <= 0x2AFF,\n 'Miscellaneous Symbols and Arrows': (char) => char >= 0x2B00 && char <= 0x2BFF,\n // 'Glagolitic': (char) => char >= 0x2C00 && char <= 0x2C5F,\n // 'Latin Extended-C': (char) => char >= 0x2C60 && char <= 0x2C7F,\n // 'Coptic': (char) => char >= 0x2C80 && char <= 0x2CFF,\n // 'Georgian Supplement': (char) => char >= 0x2D00 && char <= 0x2D2F,\n // 'Tifinagh': (char) => char >= 0x2D30 && char <= 0x2D7F,\n // 'Ethiopic Extended': (char) => char >= 0x2D80 && char <= 0x2DDF,\n // 'Cyrillic Extended-A': (char) => char >= 0x2DE0 && char <= 0x2DFF,\n // 'Supplemental Punctuation': (char) => char >= 0x2E00 && char <= 0x2E7F,\n // 'CJK Radicals Supplement': (char) => char >= 0x2E80 && char <= 0x2EFF,\n // 'Kangxi Radicals': (char) => char >= 0x2F00 && char <= 0x2FDF,\n 'Ideographic Description Characters': (char) => char >= 0x2FF0 && char <= 0x2FFF,\n 'CJK Symbols and Punctuation': (char) => char >= 0x3000 && char <= 0x303F,\n // 'Hiragana': (char) => char >= 0x3040 && char <= 0x309F,\n 'Katakana': (char) => char >= 0x30A0 && char <= 0x30FF,\n // 'Bopomofo': (char) => char >= 0x3100 && char <= 0x312F,\n // 'Hangul Compatibility Jamo': (char) => char >= 0x3130 && char <= 0x318F,\n 'Kanbun': (char) => char >= 0x3190 && char <= 0x319F,\n // 'Bopomofo Extended': (char) => char >= 0x31A0 && char <= 0x31BF,\n 'CJK Strokes': (char) => char >= 0x31C0 && char <= 0x31EF,\n // 'Katakana Phonetic Extensions': (char) => char >= 0x31F0 && char <= 0x31FF,\n 'Enclosed CJK Letters and Months': (char) => char >= 0x3200 && char <= 0x32FF,\n 'CJK Compatibility': (char) => char >= 0x3300 && char <= 0x33FF,\n // 'CJK Unified Ideographs Extension A': (char) => char >= 0x3400 && char <= 0x4DBF,\n 'Yijing Hexagram Symbols': (char) => char >= 0x4DC0 && char <= 0x4DFF,\n // 'CJK Unified Ideographs': (char) => char >= 0x4E00 && char <= 0x9FFF,\n // 'Yi Syllables': (char) => char >= 0xA000 && char <= 0xA48F,\n // 'Yi Radicals': (char) => char >= 0xA490 && char <= 0xA4CF,\n // 'Lisu': (char) => char >= 0xA4D0 && char <= 0xA4FF,\n // 'Vai': (char) => char >= 0xA500 && char <= 0xA63F,\n // 'Cyrillic Extended-B': (char) => char >= 0xA640 && char <= 0xA69F,\n // 'Bamum': (char) => char >= 0xA6A0 && char <= 0xA6FF,\n // 'Modifier Tone Letters': (char) => char >= 0xA700 && char <= 0xA71F,\n // 'Latin Extended-D': (char) => char >= 0xA720 && char <= 0xA7FF,\n // 'Syloti Nagri': (char) => char >= 0xA800 && char <= 0xA82F,\n // 'Common Indic Number Forms': (char) => char >= 0xA830 && char <= 0xA83F,\n // 'Phags-pa': (char) => char >= 0xA840 && char <= 0xA87F,\n // 'Saurashtra': (char) => char >= 0xA880 && char <= 0xA8DF,\n // 'Devanagari Extended': (char) => char >= 0xA8E0 && char <= 0xA8FF,\n // 'Kayah Li': (char) => char >= 0xA900 && char <= 0xA92F,\n // 'Rejang': (char) => char >= 0xA930 && char <= 0xA95F,\n // 'Hangul Jamo Extended-A': (char) => char >= 0xA960 && char <= 0xA97F,\n // 'Javanese': (char) => char >= 0xA980 && char <= 0xA9DF,\n // 'Myanmar Extended-B': (char) => char >= 0xA9E0 && char <= 0xA9FF,\n // 'Cham': (char) => char >= 0xAA00 && char <= 0xAA5F,\n // 'Myanmar Extended-A': (char) => char >= 0xAA60 && char <= 0xAA7F,\n // 'Tai Viet': (char) => char >= 0xAA80 && char <= 0xAADF,\n // 'Meetei Mayek Extensions': (char) => char >= 0xAAE0 && char <= 0xAAFF,\n // 'Ethiopic Extended-A': (char) => char >= 0xAB00 && char <= 0xAB2F,\n // 'Latin Extended-E': (char) => char >= 0xAB30 && char <= 0xAB6F,\n // 'Cherokee Supplement': (char) => char >= 0xAB70 && char <= 0xABBF,\n // 'Meetei Mayek': (char) => char >= 0xABC0 && char <= 0xABFF,\n // 'Hangul Syllables': (char) => char >= 0xAC00 && char <= 0xD7AF,\n // 'Hangul Jamo Extended-B': (char) => char >= 0xD7B0 && char <= 0xD7FF,\n // 'High Surrogates': (char) => char >= 0xD800 && char <= 0xDB7F,\n // 'High Private Use Surrogates': (char) => char >= 0xDB80 && char <= 0xDBFF,\n // 'Low Surrogates': (char) => char >= 0xDC00 && char <= 0xDFFF,\n 'Private Use Area': (char) => char >= 0xE000 && char <= 0xF8FF,\n // 'CJK Compatibility Ideographs': (char) => char >= 0xF900 && char <= 0xFAFF,\n // 'Alphabetic Presentation Forms': (char) => char >= 0xFB00 && char <= 0xFB4F,\n // 'Arabic Presentation Forms-A': (char) => char >= 0xFB50 && char <= 0xFDFF,\n // 'Variation Selectors': (char) => char >= 0xFE00 && char <= 0xFE0F,\n 'Vertical Forms': (char) => char >= 0xFE10 && char <= 0xFE1F,\n // 'Combining Half Marks': (char) => char >= 0xFE20 && char <= 0xFE2F,\n 'CJK Compatibility Forms': (char) => char >= 0xFE30 && char <= 0xFE4F,\n 'Small Form Variants': (char) => char >= 0xFE50 && char <= 0xFE6F,\n // 'Arabic Presentation Forms-B': (char) => char >= 0xFE70 && char <= 0xFEFF,\n 'Halfwidth and Fullwidth Forms': (char) => char >= 0xFF00 && char <= 0xFFEF\n // 'Specials': (char) => char >= 0xFFF0 && char <= 0xFFFF,\n // 'Linear B Syllabary': (char) => char >= 0x10000 && char <= 0x1007F,\n // 'Linear B Ideograms': (char) => char >= 0x10080 && char <= 0x100FF,\n // 'Aegean Numbers': (char) => char >= 0x10100 && char <= 0x1013F,\n // 'Ancient Greek Numbers': (char) => char >= 0x10140 && char <= 0x1018F,\n // 'Ancient Symbols': (char) => char >= 0x10190 && char <= 0x101CF,\n // 'Phaistos Disc': (char) => char >= 0x101D0 && char <= 0x101FF,\n // 'Lycian': (char) => char >= 0x10280 && char <= 0x1029F,\n // 'Carian': (char) => char >= 0x102A0 && char <= 0x102DF,\n // 'Coptic Epact Numbers': (char) => char >= 0x102E0 && char <= 0x102FF,\n // 'Old Italic': (char) => char >= 0x10300 && char <= 0x1032F,\n // 'Gothic': (char) => char >= 0x10330 && char <= 0x1034F,\n // 'Old Permic': (char) => char >= 0x10350 && char <= 0x1037F,\n // 'Ugaritic': (char) => char >= 0x10380 && char <= 0x1039F,\n // 'Old Persian': (char) => char >= 0x103A0 && char <= 0x103DF,\n // 'Deseret': (char) => char >= 0x10400 && char <= 0x1044F,\n // 'Shavian': (char) => char >= 0x10450 && char <= 0x1047F,\n // 'Osmanya': (char) => char >= 0x10480 && char <= 0x104AF,\n // 'Osage': (char) => char >= 0x104B0 && char <= 0x104FF,\n // 'Elbasan': (char) => char >= 0x10500 && char <= 0x1052F,\n // 'Caucasian Albanian': (char) => char >= 0x10530 && char <= 0x1056F,\n // 'Vithkuqi': (char) => char >= 0x10570 && char <= 0x105BF,\n // 'Todhri': (char) => char >= 0x105C0 && char <= 0x105FF,\n // 'Linear A': (char) => char >= 0x10600 && char <= 0x1077F,\n // 'Latin Extended-F': (char) => char >= 0x10780 && char <= 0x107BF,\n // 'Cypriot Syllabary': (char) => char >= 0x10800 && char <= 0x1083F,\n // 'Imperial Aramaic': (char) => char >= 0x10840 && char <= 0x1085F,\n // 'Palmyrene': (char) => char >= 0x10860 && char <= 0x1087F,\n // 'Nabataean': (char) => char >= 0x10880 && char <= 0x108AF,\n // 'Hatran': (char) => char >= 0x108E0 && char <= 0x108FF,\n // 'Phoenician': (char) => char >= 0x10900 && char <= 0x1091F,\n // 'Lydian': (char) => char >= 0x10920 && char <= 0x1093F,\n // 'Meroitic Hieroglyphs': (char) => char >= 0x10980 && char <= 0x1099F,\n // 'Meroitic Cursive': (char) => char >= 0x109A0 && char <= 0x109FF,\n // 'Kharoshthi': (char) => char >= 0x10A00 && char <= 0x10A5F,\n // 'Old South Arabian': (char) => char >= 0x10A60 && char <= 0x10A7F,\n // 'Old North Arabian': (char) => char >= 0x10A80 && char <= 0x10A9F,\n // 'Manichaean': (char) => char >= 0x10AC0 && char <= 0x10AFF,\n // 'Avestan': (char) => char >= 0x10B00 && char <= 0x10B3F,\n // 'Inscriptional Parthian': (char) => char >= 0x10B40 && char <= 0x10B5F,\n // 'Inscriptional Pahlavi': (char) => char >= 0x10B60 && char <= 0x10B7F,\n // 'Psalter Pahlavi': (char) => char >= 0x10B80 && char <= 0x10BAF,\n // 'Old Turkic': (char) => char >= 0x10C00 && char <= 0x10C4F,\n // 'Old Hungarian': (char) => char >= 0x10C80 && char <= 0x10CFF,\n // 'Hanifi Rohingya': (char) => char >= 0x10D00 && char <= 0x10D3F,\n // 'Garay': (char) => char >= 0x10D40 && char <= 0x10D8F,\n // 'Rumi Numeral Symbols': (char) => char >= 0x10E60 && char <= 0x10E7F,\n // 'Yezidi': (char) => char >= 0x10E80 && char <= 0x10EBF,\n // 'Arabic Extended-C': (char) => char >= 0x10EC0 && char <= 0x10EFF,\n // 'Old Sogdian': (char) => char >= 0x10F00 && char <= 0x10F2F,\n // 'Sogdian': (char) => char >= 0x10F30 && char <= 0x10F6F,\n // 'Old Uyghur': (char) => char >= 0x10F70 && char <= 0x10FAF,\n // 'Chorasmian': (char) => char >= 0x10FB0 && char <= 0x10FDF,\n // 'Elymaic': (char) => char >= 0x10FE0 && char <= 0x10FFF,\n // 'Brahmi': (char) => char >= 0x11000 && char <= 0x1107F,\n // 'Kaithi': (char) => char >= 0x11080 && char <= 0x110CF,\n // 'Sora Sompeng': (char) => char >= 0x110D0 && char <= 0x110FF,\n // 'Chakma': (char) => char >= 0x11100 && char <= 0x1114F,\n // 'Mahajani': (char) => char >= 0x11150 && char <= 0x1117F,\n // 'Sharada': (char) => char >= 0x11180 && char <= 0x111DF,\n // 'Sinhala Archaic Numbers': (char) => char >= 0x111E0 && char <= 0x111FF,\n // 'Khojki': (char) => char >= 0x11200 && char <= 0x1124F,\n // 'Multani': (char) => char >= 0x11280 && char <= 0x112AF,\n // 'Khudawadi': (char) => char >= 0x112B0 && char <= 0x112FF,\n // 'Grantha': (char) => char >= 0x11300 && char <= 0x1137F,\n // 'Tulu-Tigalari': (char) => char >= 0x11380 && char <= 0x113FF,\n // 'Newa': (char) => char >= 0x11400 && char <= 0x1147F,\n // 'Tirhuta': (char) => char >= 0x11480 && char <= 0x114DF,\n // 'Siddham': (char) => char >= 0x11580 && char <= 0x115FF,\n // 'Modi': (char) => char >= 0x11600 && char <= 0x1165F,\n // 'Mongolian Supplement': (char) => char >= 0x11660 && char <= 0x1167F,\n // 'Takri': (char) => char >= 0x11680 && char <= 0x116CF,\n // 'Myanmar Extended-C': (char) => char >= 0x116D0 && char <= 0x116FF,\n // 'Ahom': (char) => char >= 0x11700 && char <= 0x1174F,\n // 'Dogra': (char) => char >= 0x11800 && char <= 0x1184F,\n // 'Warang Citi': (char) => char >= 0x118A0 && char <= 0x118FF,\n // 'Dives Akuru': (char) => char >= 0x11900 && char <= 0x1195F,\n // 'Nandinagari': (char) => char >= 0x119A0 && char <= 0x119FF,\n // 'Zanabazar Square': (char) => char >= 0x11A00 && char <= 0x11A4F,\n // 'Soyombo': (char) => char >= 0x11A50 && char <= 0x11AAF,\n // 'Unified Canadian Aboriginal Syllabics Extended-A': (char) => char >= 0x11AB0 && char <= 0x11ABF,\n // 'Pau Cin Hau': (char) => char >= 0x11AC0 && char <= 0x11AFF,\n // 'Devanagari Extended-A': (char) => char >= 0x11B00 && char <= 0x11B5F,\n // 'Sunuwar': (char) => char >= 0x11BC0 && char <= 0x11BFF,\n // 'Bhaiksuki': (char) => char >= 0x11C00 && char <= 0x11C6F,\n // 'Marchen': (char) => char >= 0x11C70 && char <= 0x11CBF,\n // 'Masaram Gondi': (char) => char >= 0x11D00 && char <= 0x11D5F,\n // 'Gunjala Gondi': (char) => char >= 0x11D60 && char <= 0x11DAF,\n // 'Makasar': (char) => char >= 0x11EE0 && char <= 0x11EFF,\n // 'Kawi': (char) => char >= 0x11F00 && char <= 0x11F5F,\n // 'Lisu Supplement': (char) => char >= 0x11FB0 && char <= 0x11FBF,\n // 'Tamil Supplement': (char) => char >= 0x11FC0 && char <= 0x11FFF,\n // 'Cuneiform': (char) => char >= 0x12000 && char <= 0x123FF,\n // 'Cuneiform Numbers and Punctuation': (char) => char >= 0x12400 && char <= 0x1247F,\n // 'Early Dynastic Cuneiform': (char) => char >= 0x12480 && char <= 0x1254F,\n // 'Cypro-Minoan': (char) => char >= 0x12F90 && char <= 0x12FFF,\n // 'Egyptian Hieroglyphs': (char) => char >= 0x13000 && char <= 0x1342F,\n // 'Egyptian Hieroglyph Format Controls': (char) => char >= 0x13430 && char <= 0x1345F,\n // 'Egyptian Hieroglyphs Extended-A': (char) => char >= 0x13460 && char <= 0x143FF,\n // 'Anatolian Hieroglyphs': (char) => char >= 0x14400 && char <= 0x1467F,\n // 'Gurung Khema': (char) => char >= 0x16100 && char <= 0x1613F,\n // 'Bamum Supplement': (char) => char >= 0x16800 && char <= 0x16A3F,\n // 'Mro': (char) => char >= 0x16A40 && char <= 0x16A6F,\n // 'Tangsa': (char) => char >= 0x16A70 && char <= 0x16ACF,\n // 'Bassa Vah': (char) => char >= 0x16AD0 && char <= 0x16AFF,\n // 'Pahawh Hmong': (char) => char >= 0x16B00 && char <= 0x16B8F,\n // 'Kirat Rai': (char) => char >= 0x16D40 && char <= 0x16D7F,\n // 'Medefaidrin': (char) => char >= 0x16E40 && char <= 0x16E9F,\n // 'Miao': (char) => char >= 0x16F00 && char <= 0x16F9F,\n // 'Ideographic Symbols and Punctuation': (char) => char >= 0x16FE0 && char <= 0x16FFF,\n // 'Tangut': (char) => char >= 0x17000 && char <= 0x187FF,\n // 'Tangut Components': (char) => char >= 0x18800 && char <= 0x18AFF,\n // 'Khitan Small Script': (char) => char >= 0x18B00 && char <= 0x18CFF,\n // 'Tangut Supplement': (char) => char >= 0x18D00 && char <= 0x18D7F,\n // 'Kana Extended-B': (char) => char >= 0x1AFF0 && char <= 0x1AFFF,\n // 'Kana Supplement': (char) => char >= 0x1B000 && char <= 0x1B0FF,\n // 'Kana Extended-A': (char) => char >= 0x1B100 && char <= 0x1B12F,\n // 'Small Kana Extension': (char) => char >= 0x1B130 && char <= 0x1B16F,\n // 'Nushu': (char) => char >= 0x1B170 && char <= 0x1B2FF,\n // 'Duployan': (char) => char >= 0x1BC00 && char <= 0x1BC9F,\n // 'Shorthand Format Controls': (char) => char >= 0x1BCA0 && char <= 0x1BCAF,\n // 'Symbols for Legacy Computing Supplement': (char) => char >= 0x1CC00 && char <= 0x1CEBF,\n // 'Znamenny Musical Notation': (char) => char >= 0x1CF00 && char <= 0x1CFCF,\n // 'Byzantine Musical Symbols': (char) => char >= 0x1D000 && char <= 0x1D0FF,\n // 'Musical Symbols': (char) => char >= 0x1D100 && char <= 0x1D1FF,\n // 'Ancient Greek Musical Notation': (char) => char >= 0x1D200 && char <= 0x1D24F,\n // 'Kaktovik Numerals': (char) => char >= 0x1D2C0 && char <= 0x1D2DF,\n // 'Mayan Numerals': (char) => char >= 0x1D2E0 && char <= 0x1D2FF,\n // 'Tai Xuan Jing Symbols': (char) => char >= 0x1D300 && char <= 0x1D35F,\n // 'Counting Rod Numerals': (char) => char >= 0x1D360 && char <= 0x1D37F,\n // 'Mathematical Alphanumeric Symbols': (char) => char >= 0x1D400 && char <= 0x1D7FF,\n // 'Sutton SignWriting': (char) => char >= 0x1D800 && char <= 0x1DAAF,\n // 'Latin Extended-G': (char) => char >= 0x1DF00 && char <= 0x1DFFF,\n // 'Glagolitic Supplement': (char) => char >= 0x1E000 && char <= 0x1E02F,\n // 'Cyrillic Extended-D': (char) => char >= 0x1E030 && char <= 0x1E08F,\n // 'Nyiakeng Puachue Hmong': (char) => char >= 0x1E100 && char <= 0x1E14F,\n // 'Toto': (char) => char >= 0x1E290 && char <= 0x1E2BF,\n // 'Wancho': (char) => char >= 0x1E2C0 && char <= 0x1E2FF,\n // 'Nag Mundari': (char) => char >= 0x1E4D0 && char <= 0x1E4FF,\n // 'Ol Onal': (char) => char >= 0x1E5D0 && char <= 0x1E5FF,\n // 'Ethiopic Extended-B': (char) => char >= 0x1E7E0 && char <= 0x1E7FF,\n // 'Mende Kikakui': (char) => char >= 0x1E800 && char <= 0x1E8DF,\n // 'Adlam': (char) => char >= 0x1E900 && char <= 0x1E95F,\n // 'Indic Siyaq Numbers': (char) => char >= 0x1EC70 && char <= 0x1ECBF,\n // 'Ottoman Siyaq Numbers': (char) => char >= 0x1ED00 && char <= 0x1ED4F,\n // 'Arabic Mathematical Alphabetic Symbols': (char) => char >= 0x1EE00 && char <= 0x1EEFF,\n // 'Mahjong Tiles': (char) => char >= 0x1F000 && char <= 0x1F02F,\n // 'Domino Tiles': (char) => char >= 0x1F030 && char <= 0x1F09F,\n // 'Playing Cards': (char) => char >= 0x1F0A0 && char <= 0x1F0FF,\n // 'Enclosed Alphanumeric Supplement': (char) => char >= 0x1F100 && char <= 0x1F1FF,\n // 'Enclosed Ideographic Supplement': (char) => char >= 0x1F200 && char <= 0x1F2FF,\n // 'Miscellaneous Symbols and Pictographs': (char) => char >= 0x1F300 && char <= 0x1F5FF,\n // 'Emoticons': (char) => char >= 0x1F600 && char <= 0x1F64F,\n // 'Ornamental Dingbats': (char) => char >= 0x1F650 && char <= 0x1F67F,\n // 'Transport and Map Symbols': (char) => char >= 0x1F680 && char <= 0x1F6FF,\n // 'Alchemical Symbols': (char) => char >= 0x1F700 && char <= 0x1F77F,\n // 'Geometric Shapes Extended': (char) => char >= 0x1F780 && char <= 0x1F7FF,\n // 'Supplemental Arrows-C': (char) => char >= 0x1F800 && char <= 0x1F8FF,\n // 'Supplemental Symbols and Pictographs': (char) => char >= 0x1F900 && char <= 0x1F9FF,\n // 'Chess Symbols': (char) => char >= 0x1FA00 && char <= 0x1FA6F,\n // 'Symbols and Pictographs Extended-A': (char) => char >= 0x1FA70 && char <= 0x1FAFF,\n // 'Symbols for Legacy Computing': (char) => char >= 0x1FB00 && char <= 0x1FBFF,\n // 'CJK Unified Ideographs Extension B': (char) => char >= 0x20000 && char <= 0x2A6DF,\n // 'CJK Unified Ideographs Extension C': (char) => char >= 0x2A700 && char <= 0x2B73F,\n // 'CJK Unified Ideographs Extension D': (char) => char >= 0x2B740 && char <= 0x2B81F,\n // 'CJK Unified Ideographs Extension E': (char) => char >= 0x2B820 && char <= 0x2CEAF,\n // 'CJK Unified Ideographs Extension F': (char) => char >= 0x2CEB0 && char <= 0x2EBEF,\n // 'CJK Unified Ideographs Extension I': (char) => char >= 0x2EBF0 && char <= 0x2EE5F,\n // 'CJK Unified Ideographs Extension G': (char) => char >= 0x30000 && char <= 0x3134F,\n // 'CJK Unified Ideographs Extension H': (char) => char >= 0x31350 && char <= 0x323AF,\n // 'CJK Compatibility Ideographs Supplement': (char) => char >= 0x2F800 && char <= 0x2FA1F,\n // 'Tags': (char) => char >= 0xE0000 && char <= 0xE007F,\n // 'Variation Selectors Supplement': (char) => char >= 0xE0100 && char <= 0xE01EF,\n // 'Supplementary Private Use Area-A': (char) => char >= 0xF0000 && char <= 0xFFFFF,\n // 'Supplementary Private Use Area-B': (char) => char >= 0x100000 && char <= 0x10FFFF,\n};\n","import {unicodeBlockLookup as isChar} from './is_char_in_unicode_block';\n\nexport function allowsIdeographicBreaking(chars: string) {\n for (const char of chars) {\n if (!charAllowsIdeographicBreaking(char.charCodeAt(0))) return false;\n }\n return true;\n}\n\nexport function allowsVerticalWritingMode(chars: string) {\n for (const char of chars) {\n if (charHasUprightVerticalOrientation(char.charCodeAt(0))) return true;\n }\n return false;\n}\n\nexport function allowsLetterSpacing(chars: string) {\n for (const char of chars) {\n if (!charAllowsLetterSpacing(char.charCodeAt(0))) return false;\n }\n return true;\n}\n\n/**\n * Returns a regular expression matching the given script codes, excluding any\n * code that the execution environment lacks support for in regular expressions.\n */\nfunction sanitizedRegExpFromScriptCodes(scriptCodes: Array): RegExp {\n const supportedPropertyEscapes = scriptCodes.map(code => {\n try {\n return new RegExp(`\\\\p{sc=${code}}`, 'u').source;\n } catch {\n return null;\n }\n }).filter(pe => pe);\n return new RegExp(supportedPropertyEscapes.join('|'), 'u');\n}\n\n/**\n * ISO 15924 script codes of scripts that disallow letter spacing as of Unicode\n * 16.0.0.\n *\n * In general, cursive scripts are incompatible with letter spacing.\n */\nconst cursiveScriptCodes = [\n 'Arab', // Arabic\n 'Dupl', // Duployan\n 'Mong', // Mongolian\n 'Ougr', // Old Uyghur\n 'Syrc', // Syriac\n];\n\nconst cursiveScriptRegExp = sanitizedRegExpFromScriptCodes(cursiveScriptCodes);\n\nexport function charAllowsLetterSpacing(char: number) {\n return !cursiveScriptRegExp.test(String.fromCodePoint(char));\n}\n\n/**\n * ISO 15924 script codes of scripts that allow ideographic line breaking beyond\n * the CJKV scripts that are considered ideographic in Unicode 16.0.0.\n */\nconst ideographicBreakingScriptCodes = [\n 'Bopo', // Bopomofo\n 'Hani', // Han\n 'Hira', // Hiragana\n 'Kana', // Katakana\n 'Kits', // Khitan Small Script\n 'Nshu', // Nushu\n 'Tang', // Tangut\n 'Yiii', // Yi\n];\n\nconst ideographicBreakingRegExp = sanitizedRegExpFromScriptCodes(ideographicBreakingScriptCodes);\n\nexport function charAllowsIdeographicBreaking(char: number) {\n // Return early for characters outside all ideographic ranges.\n if (char < 0x2E80) return false;\n\n if (isChar['CJK Compatibility Forms'](char)) return true;\n if (isChar['CJK Compatibility'](char)) return true;\n if (isChar['CJK Strokes'](char)) return true;\n if (isChar['CJK Symbols and Punctuation'](char)) return true;\n if (isChar['Enclosed CJK Letters and Months'](char)) return true;\n if (isChar['Halfwidth and Fullwidth Forms'](char)) return true;\n if (isChar['Ideographic Description Characters'](char)) return true;\n if (isChar['Vertical Forms'](char)) return true;\n return ideographicBreakingRegExp.test(String.fromCodePoint(char));\n}\n\n// The following logic comes from\n// .\n// Keep it synchronized with\n// .\n// The data file denotes with “U” or “Tu” any codepoint that may be drawn\n// upright in vertical text but does not distinguish between upright and\n// “neutral” characters.\n\n// Blocks in the Unicode supplementary planes are excluded from this module due\n// to .\n\n/**\n * Returns true if the given Unicode codepoint identifies a character with\n * upright orientation.\n *\n * A character has upright orientation if it is drawn upright (unrotated)\n * whether the line is oriented horizontally or vertically, even if both\n * adjacent characters can be rotated. For example, a Chinese character is\n * always drawn upright. An uprightly oriented character causes an adjacent\n * “neutral” character to be drawn upright as well.\n */\nexport function charHasUprightVerticalOrientation(char: number) {\n if (char === 0x02EA /* modifier letter yin departing tone mark */ ||\n char === 0x02EB /* modifier letter yang departing tone mark */) {\n return true;\n }\n\n // Return early for characters outside all ranges whose characters remain\n // upright in vertical writing mode.\n if (char < 0x1100) return false;\n\n if (isChar['CJK Compatibility Forms'](char)) {\n if (!((char >= 0xFE49 /* dashed overline */ && char <= 0xFE4F) /* wavy low line */)) {\n return true;\n }\n }\n if (isChar['CJK Compatibility'](char)) return true;\n if (isChar['CJK Strokes'](char)) return true;\n if (isChar['CJK Symbols and Punctuation'](char)) {\n if (!((char >= 0x3008 /* left angle bracket */ && char <= 0x3011) /* right black lenticular bracket */) &&\n !((char >= 0x3014 /* left tortoise shell bracket */ && char <= 0x301F) /* low double prime quotation mark */) &&\n char !== 0x3030 /* wavy dash */) {\n return true;\n }\n }\n if (isChar['Enclosed CJK Letters and Months'](char)) return true;\n if (isChar['Ideographic Description Characters'](char)) return true;\n if (isChar['Kanbun'](char)) return true;\n if (isChar['Katakana'](char)) {\n if (char !== 0x30FC /* katakana-hiragana prolonged sound mark */) {\n return true;\n }\n }\n if (isChar['Halfwidth and Fullwidth Forms'](char)) {\n if (char !== 0xFF08 /* fullwidth left parenthesis */ &&\n char !== 0xFF09 /* fullwidth right parenthesis */ &&\n char !== 0xFF0D /* fullwidth hyphen-minus */ &&\n !((char >= 0xFF1A /* fullwidth colon */ && char <= 0xFF1E) /* fullwidth greater-than sign */) &&\n char !== 0xFF3B /* fullwidth left square bracket */ &&\n char !== 0xFF3D /* fullwidth right square bracket */ &&\n char !== 0xFF3F /* fullwidth low line */ &&\n !(char >= 0xFF5B /* fullwidth left curly bracket */ && char <= 0xFFDF) &&\n char !== 0xFFE3 /* fullwidth macron */ &&\n !(char >= 0xFFE8 /* halfwidth forms light vertical */ && char <= 0xFFEF)) {\n return true;\n }\n }\n if (isChar['Small Form Variants'](char)) {\n if (!((char >= 0xFE58 /* small em dash */ && char <= 0xFE5E) /* small right tortoise shell bracket */) &&\n !((char >= 0xFE63 /* small hyphen-minus */ && char <= 0xFE66) /* small equals sign */)) {\n return true;\n }\n }\n if (isChar['Vertical Forms'](char)) return true;\n if (isChar['Yijing Hexagram Symbols'](char)) return true;\n\n if (/* Canadian Aboriginal */ /\\p{sc=Cans}/u.test(String.fromCodePoint(char))) return true;\n if (/* Hangul */ /\\p{sc=Hang}/u.test(String.fromCodePoint(char))) return true;\n if (ideographicBreakingRegExp.test(String.fromCodePoint(char))) return true;\n\n return false;\n}\n\n/**\n * Returns true if the given Unicode codepoint identifies a character with\n * neutral orientation.\n *\n * A character has neutral orientation if it may be drawn rotated or unrotated\n * when the line is oriented vertically, depending on the orientation of the\n * adjacent characters. For example, along a vertically oriented line, the vulgar\n * fraction ½ is drawn upright among Chinese characters but rotated among Latin\n * letters. A neutrally oriented character does not influence whether an\n * adjacent character is drawn upright or rotated.\n */\nexport function charHasNeutralVerticalOrientation(char: number) {\n if (isChar['Latin-1 Supplement'](char)) {\n if (char === 0x00A7 /* section sign */ ||\n char === 0x00A9 /* copyright sign */ ||\n char === 0x00AE /* registered sign */ ||\n char === 0x00B1 /* plus-minus sign */ ||\n char === 0x00BC /* vulgar fraction one quarter */ ||\n char === 0x00BD /* vulgar fraction one half */ ||\n char === 0x00BE /* vulgar fraction three quarters */ ||\n char === 0x00D7 /* multiplication sign */ ||\n char === 0x00F7 /* division sign */) {\n return true;\n }\n }\n if (isChar['General Punctuation'](char)) {\n if (char === 0x2016 /* double vertical line */ ||\n char === 0x2020 /* dagger */ ||\n char === 0x2021 /* double dagger */ ||\n char === 0x2030 /* per mille sign */ ||\n char === 0x2031 /* per ten thousand sign */ ||\n char === 0x203B /* reference mark */ ||\n char === 0x203C /* double exclamation mark */ ||\n char === 0x2042 /* asterism */ ||\n char === 0x2047 /* double question mark */ ||\n char === 0x2048 /* question exclamation mark */ ||\n char === 0x2049 /* exclamation question mark */ ||\n char === 0x2051 /* two asterisks aligned vertically */) {\n return true;\n }\n }\n if (isChar['Letterlike Symbols'](char)) return true;\n if (isChar['Number Forms'](char)) return true;\n if (isChar['Miscellaneous Technical'](char)) {\n if ((char >= 0x2300 /* diameter sign */ && char <= 0x2307 /* wavy line */) ||\n (char >= 0x230C /* bottom right crop */ && char <= 0x231F /* bottom right corner */) ||\n (char >= 0x2324 /* up arrowhead between two horizontal bars */ && char <= 0x2328 /* keyboard */) ||\n char === 0x232B /* erase to the left */ ||\n (char >= 0x237D /* shouldered open box */ && char <= 0x239A /* clear screen symbol */) ||\n (char >= 0x23BE /* dentistry symbol light vertical and top right */ && char <= 0x23CD /* square foot */) ||\n char === 0x23CF /* eject symbol */ ||\n (char >= 0x23D1 /* metrical breve */ && char <= 0x23DB /* fuse */) ||\n (char >= 0x23E2 /* white trapezium */ && char <= 0x23FF)) {\n return true;\n }\n }\n if (isChar['Control Pictures'](char) && char !== 0x2423 /* open box */) return true;\n if (isChar['Optical Character Recognition'](char)) return true;\n if (isChar['Enclosed Alphanumerics'](char)) return true;\n if (isChar['Geometric Shapes'](char)) return true;\n if (isChar['Miscellaneous Symbols'](char)) {\n if (!((char >= 0x261A /* black left pointing index */ && char <= 0x261F) /* white down pointing index */)) {\n return true;\n }\n }\n if (isChar['Miscellaneous Symbols and Arrows'](char)) {\n if ((char >= 0x2B12 /* square with top half black */ && char <= 0x2B2F /* white vertical ellipse */) ||\n (char >= 0x2B50 /* white medium star */ && char <= 0x2B59 /* heavy circled saltire */) ||\n (char >= 0x2BB8 /* upwards white arrow from bar with horizontal bar */ && char <= 0x2BEB)) {\n return true;\n }\n }\n if (isChar['CJK Symbols and Punctuation'](char)) return true;\n if (isChar['Katakana'](char)) return true;\n if (isChar['Private Use Area'](char)) return true;\n if (isChar['CJK Compatibility Forms'](char)) return true;\n if (isChar['Small Form Variants'](char)) return true;\n if (isChar['Halfwidth and Fullwidth Forms'](char)) return true;\n\n if (char === 0x221E /* infinity */ ||\n char === 0x2234 /* therefore */ ||\n char === 0x2235 /* because */ ||\n (char >= 0x2700 /* black safety scissors */ && char <= 0x2767 /* rotated floral heart bullet */) ||\n (char >= 0x2776 /* dingbat negative circled digit one */ && char <= 0x2793 /* dingbat negative circled sans-serif number ten */) ||\n char === 0xFFFC /* object replacement character */ ||\n char === 0xFFFD /* replacement character */) {\n return true;\n }\n\n return false;\n}\n\n/**\n * Returns true if the given Unicode codepoint identifies a character with\n * rotated orientation.\n *\n * A character has rotated orientation if it is drawn rotated when the line is\n * oriented vertically, even if both adjacent characters are upright. For\n * example, a Latin letter is drawn rotated along a vertical line. A rotated\n * character causes an adjacent “neutral” character to be drawn rotated as well.\n */\nexport function charHasRotatedVerticalOrientation(char: number) {\n return !(charHasUprightVerticalOrientation(char) ||\n charHasNeutralVerticalOrientation(char));\n}\n\nexport function charInComplexShapingScript(char: number) {\n return /\\p{sc=Arab}/u.test(String.fromCodePoint(char));\n}\n\n/**\n * ISO 15924 script codes of scripts that are primarily written horizontally\n * right-to-left according to Unicode 16.0.0.\n */\nconst rtlScriptCodes = [\n 'Adlm', // Adlam\n 'Arab', // Arabic\n 'Armi', // Imperial Aramaic\n 'Avst', // Avestan\n 'Chrs', // Chorasmian\n 'Cprt', // Cypriot\n 'Egyp', // Egyptian Hieroglyphs\n 'Elym', // Elymaic\n 'Gara', // Garay\n 'Hatr', // Hatran\n 'Hebr', // Hebrew\n 'Hung', // Old Hungarian\n 'Khar', // Kharoshthi\n 'Lydi', // Lydian\n 'Mand', // Mandaic\n 'Mani', // Manichaean\n 'Mend', // Mende Kikakui\n 'Merc', // Meroitic Cursive\n 'Mero', // Meroitic Hieroglyphs\n 'Narb', // Old North Arabian\n 'Nbat', // Nabataean\n 'Nkoo', // NKo\n 'Orkh', // Old Turkic\n 'Palm', // Palmyrene\n 'Phli', // Inscriptional Pahlavi\n 'Phlp', // Psalter Pahlavi\n 'Phnx', // Phoenician\n 'Prti', // Inscriptional Parthian\n 'Rohg', // Hanifi Rohingya\n 'Samr', // Samaritan\n 'Sarb', // Old South Arabian\n 'Sogo', // Old Sogdian\n 'Syrc', // Syriac\n 'Thaa', // Thaana\n 'Todr', // Todhri\n 'Yezi', // Yezidi\n];\n\nconst rtlScriptRegExp = sanitizedRegExpFromScriptCodes(rtlScriptCodes);\n\nexport function charInRTLScript(char: number) {\n return rtlScriptRegExp.test(String.fromCodePoint(char));\n}\n\nexport function charInSupportedScript(char: number, canRenderRTL: boolean) {\n // This is a rough heuristic: whether we \"can render\" a script\n // actually depends on the properties of the font being used\n // and whether differences from the ideal rendering are considered\n // semantically significant.\n\n // Even in Latin script, we \"can't render\" combinations such as the fi\n // ligature, but we don't consider that semantically significant.\n if (!canRenderRTL && charInRTLScript(char)) {\n return false;\n }\n if ((char >= 0x0900 && char <= 0x0DFF) ||\n // Main blocks for Indic scripts and Sinhala\n (char >= 0x0F00 && char <= 0x109F) ||\n // Main blocks for Tibetan and Myanmar\n isChar['Khmer'](char)) {\n // These blocks cover common scripts that require\n // complex text shaping, based on unicode script metadata:\n // https://www.unicode.org/repos/cldr/trunk/common/properties/scriptMetadata.txt\n // where \"Web Rank <= 32\" \"Shaping Required = YES\"\n return false;\n }\n return true;\n}\n\nexport function stringContainsRTLText(chars: string): boolean {\n for (const char of chars) {\n if (charInRTLScript(char.charCodeAt(0))) {\n return true;\n }\n }\n return false;\n}\n\nexport function isStringInSupportedScript(chars: string, canRenderRTL: boolean) {\n for (const char of chars) {\n if (!charInSupportedScript(char.charCodeAt(0), canRenderRTL)) {\n return false;\n }\n }\n return true;\n}\n","import {type PluginState, type RTLPluginStatus} from './rtl_text_plugin_status';\n\nexport interface RTLTextPlugin {\n applyArabicShaping: (a: string) => string;\n processBidirectionalText: ((b: string, a: Array) => Array);\n processStyledBidirectionalText: ((c: string, b: Array, a: Array) => Array<[string, Array]>);\n}\n\nclass RTLWorkerPlugin implements RTLTextPlugin {\n readonly TIMEOUT = 5000;\n\n applyArabicShaping: (a: string) => string = null;\n processBidirectionalText: ((b: string, a: Array) => Array) = null;\n processStyledBidirectionalText: ((c: string, b: Array, a: Array) => Array<[string, Array]>) = null;\n pluginStatus: RTLPluginStatus = 'unavailable';\n pluginURL: string = null;\n loadScriptResolve: () => void = () => {};\n\n private setState(state: PluginState) {\n this.pluginStatus = state.pluginStatus;\n this.pluginURL = state.pluginURL;\n }\n\n private getState(): PluginState {\n return {\n pluginStatus: this.pluginStatus,\n pluginURL: this.pluginURL\n };\n }\n\n public setMethods(rtlTextPlugin: RTLTextPlugin) {\n if (rtlWorkerPlugin.isParsed()) {\n throw new Error('RTL text plugin already registered.');\n }\n this.applyArabicShaping = rtlTextPlugin.applyArabicShaping;\n this.processBidirectionalText = rtlTextPlugin.processBidirectionalText;\n this.processStyledBidirectionalText = rtlTextPlugin.processStyledBidirectionalText;\n this.loadScriptResolve();\n }\n\n public isParsed(): boolean {\n return this.applyArabicShaping != null &&\n this.processBidirectionalText != null &&\n this.processStyledBidirectionalText != null;\n }\n\n public getRTLTextPluginStatus() {\n return this.pluginStatus;\n }\n\n public async syncState(incomingState: PluginState, importScripts: (url: string) => void): Promise {\n // Parsed plugin cannot be changed, so just return its current state.\n if (this.isParsed()) {\n return this.getState();\n }\n\n if (incomingState.pluginStatus !== 'loading') {\n // simply sync and done\n this.setState(incomingState);\n return incomingState;\n }\n const urlToLoad = incomingState.pluginURL;\n const loadScriptPromise = new Promise((resolve) => {\n this.loadScriptResolve = resolve;\n });\n importScripts(urlToLoad);\n const dontWaitForeverTimeoutPromise = new Promise((resolve) => setTimeout(() => resolve(), this.TIMEOUT));\n await Promise.race([loadScriptPromise, dontWaitForeverTimeoutPromise]);\n const complete = this.isParsed();\n if (complete) {\n const loadedState: PluginState = {\n pluginStatus: 'loaded',\n pluginURL: urlToLoad\n };\n this.setState(loadedState);\n return loadedState;\n }\n\n // error case\n this.setState({\n pluginStatus: 'error',\n pluginURL: ''\n });\n throw new Error(`RTL Text Plugin failed to import scripts from ${urlToLoad}`);\n }\n}\n\nexport const rtlWorkerPlugin = new RTLWorkerPlugin();\n","import {ZoomHistory} from './zoom_history';\nimport {isStringInSupportedScript} from '../util/script_detection';\nimport {rtlWorkerPlugin} from '../source/rtl_text_plugin_worker';\n\nimport type {TransitionSpecification} from '@maplibre/maplibre-gl-style-spec';\n\nexport type CrossfadeParameters = {\n fromScale: number;\n toScale: number;\n t: number;\n};\n\n/**\n * @internal\n * A parameter that can be evaluated to a value\n */\nexport class EvaluationParameters {\n zoom: number;\n now: number;\n fadeDuration: number;\n zoomHistory: ZoomHistory;\n transition: TransitionSpecification;\n\n // \"options\" may also be another EvaluationParameters to copy, see CrossFadedProperty.possiblyEvaluate\n constructor(zoom: number, options?: any) {\n this.zoom = zoom;\n\n if (options) {\n this.now = options.now;\n this.fadeDuration = options.fadeDuration;\n this.zoomHistory = options.zoomHistory;\n this.transition = options.transition;\n } else {\n this.now = 0;\n this.fadeDuration = 0;\n this.zoomHistory = new ZoomHistory();\n this.transition = {};\n }\n }\n\n isSupportedScript(str: string): boolean {\n return isStringInSupportedScript(str, rtlWorkerPlugin.getRTLTextPluginStatus() === 'loaded');\n }\n\n crossFadingFactor() {\n if (this.fadeDuration === 0) {\n return 1;\n } else {\n return Math.min((this.now - this.zoomHistory.lastIntegerZoomTime) / this.fadeDuration, 1);\n }\n }\n\n getCrossfadeParameters(): CrossfadeParameters {\n const z = this.zoom;\n const fraction = z - Math.floor(z);\n const t = this.crossFadingFactor();\n\n return z > this.zoomHistory.lastIntegerZoom ?\n {fromScale: 2, toScale: 1, t: fraction + (1 - fraction) * t} :\n {fromScale: 0.5, toScale: 1, t: 1 - (1 - t) * fraction};\n }\n}\n","import {clone, extend, easeCubicInOut} from '../util/util';\nimport {interpolates, type Color, type StylePropertySpecification, normalizePropertyExpression,\n type Feature,\n type FeatureState,\n type StylePropertyExpression,\n type SourceExpression,\n type CompositeExpression, type TransitionSpecification,\n type PropertyValueSpecification} from '@maplibre/maplibre-gl-style-spec';\nimport {register} from '../util/web_worker_transfer';\nimport {EvaluationParameters} from './evaluation_parameters';\n\nimport {type CanonicalTileID} from '../source/tile_id';\n\ntype TimePoint = number;\n\n/**\n * A from-to type\n */\nexport type CrossFaded = {\n to: T;\n from: T;\n};\n\n/**\n * @internal\n * Implementations of the `Property` interface:\n *\n * * Hold metadata about a property that's independent of any specific value: stuff like the type of the value,\n * the default value, etc. This comes from the style specification JSON.\n * * Define behavior that needs to be polymorphic across different properties: \"possibly evaluating\"\n * an input value (see below), and interpolating between two possibly-evaluted values.\n *\n * The type `T` is the fully-evaluated value type (e.g. `number`, `string`, `Color`).\n * The type `R` is the intermediate \"possibly evaluated\" value type. See below.\n *\n * There are two main implementations of the interface -- one for properties that allow data-driven values,\n * and one for properties that don't. There are a few \"special case\" implementations as well: one for properties\n * which cross-fade between two values rather than interpolating, one for `heatmap-color` and `line-gradient`,\n * and one for `light-position`.\n */\nexport interface Property {\n specification: StylePropertySpecification;\n possiblyEvaluate(\n value: PropertyValue,\n parameters: EvaluationParameters,\n canonical?: CanonicalTileID,\n availableImages?: Array\n ): R;\n interpolate(a: R, b: R, t: number): R;\n}\n\n/**\n * @internal\n * `PropertyValue` represents the value part of a property key-value unit. It's used to represent both\n * paint and layout property values, and regardless of whether or not their property supports data-driven\n * expressions.\n *\n * `PropertyValue` stores the raw input value as seen in a style or a runtime styling API call, i.e. one of the\n * following:\n *\n * * A constant value of the type appropriate for the property\n * * A function which produces a value of that type (but functions are quasi-deprecated in favor of expressions)\n * * An expression which produces a value of that type\n * * \"undefined\"/\"not present\", in which case the property is assumed to take on its default value.\n *\n * In addition to storing the original input value, `PropertyValue` also stores a normalized representation,\n * effectively treating functions as if they are expressions, and constant or default values as if they are\n * (constant) expressions.\n */\nexport class PropertyValue {\n property: Property;\n value: PropertyValueSpecification | void;\n expression: StylePropertyExpression;\n\n constructor(property: Property, value: PropertyValueSpecification | void) {\n this.property = property;\n this.value = value;\n this.expression = normalizePropertyExpression(value === undefined ? property.specification.default : value, property.specification);\n }\n\n isDataDriven(): boolean {\n return this.expression.kind === 'source' || this.expression.kind === 'composite';\n }\n\n possiblyEvaluate(\n parameters: EvaluationParameters,\n canonical?: CanonicalTileID,\n availableImages?: Array\n ): R {\n return this.property.possiblyEvaluate(this, parameters, canonical, availableImages);\n }\n}\n\nexport type TransitionParameters = {\n now: TimePoint;\n transition: TransitionSpecification;\n};\n\n/**\n * @internal\n * Paint properties are _transitionable_: they can change in a fluid manner, interpolating or cross-fading between\n * old and new value. The duration of the transition, and the delay before it begins, is configurable.\n *\n * `TransitionablePropertyValue` is a compositional class that stores both the property value and that transition\n * configuration.\n *\n * A `TransitionablePropertyValue` can calculate the next step in the evaluation chain for paint property values:\n * `TransitioningPropertyValue`.\n */\nclass TransitionablePropertyValue {\n property: Property;\n value: PropertyValue;\n transition: TransitionSpecification | void;\n\n constructor(property: Property) {\n this.property = property;\n this.value = new PropertyValue(property, undefined);\n }\n\n transitioned(parameters: TransitionParameters, prior: TransitioningPropertyValue): TransitioningPropertyValue {\n return new TransitioningPropertyValue(this.property, this.value, prior,\n extend({}, parameters.transition, this.transition), parameters.now);\n }\n\n untransitioned(): TransitioningPropertyValue {\n return new TransitioningPropertyValue(this.property, this.value, null, {}, 0);\n }\n}\n\n/**\n * @internal\n * `Transitionable` stores a map of all (property name, `TransitionablePropertyValue`) pairs for paint properties of a\n * given layer type. It can calculate the `TransitioningPropertyValue`s for all of them at once, producing a\n * `Transitioning` instance for the same set of properties.\n */\nexport class Transitionable {\n _properties: Properties;\n _values: {[K in keyof Props]: TransitionablePropertyValue};\n\n constructor(properties: Properties) {\n this._properties = properties;\n this._values = (Object.create(properties.defaultTransitionablePropertyValues) as any);\n }\n\n getValue(name: S): PropertyValueSpecification | void {\n return clone(this._values[name].value.value);\n }\n\n setValue(name: S, value: PropertyValueSpecification | void) {\n if (!Object.prototype.hasOwnProperty.call(this._values, name)) {\n this._values[name] = new TransitionablePropertyValue(this._values[name].property);\n }\n // Note that we do not _remove_ an own property in the case where a value is being reset\n // to the default: the transition might still be non-default.\n this._values[name].value = new PropertyValue(this._values[name].property, value === null ? undefined : clone(value));\n }\n\n getTransition(name: S): TransitionSpecification | void {\n return clone(this._values[name].transition);\n }\n\n setTransition(name: S, value: TransitionSpecification | void) {\n if (!Object.prototype.hasOwnProperty.call(this._values, name)) {\n this._values[name] = new TransitionablePropertyValue(this._values[name].property);\n }\n this._values[name].transition = clone(value) || undefined;\n }\n\n serialize() {\n const result: any = {};\n for (const property of Object.keys(this._values)) {\n const value = this.getValue(property as keyof Props);\n if (value !== undefined) {\n result[property] = value;\n }\n\n const transition = this.getTransition(property as keyof Props);\n if (transition !== undefined) {\n result[`${property}-transition`] = transition;\n }\n }\n return result;\n }\n\n transitioned(parameters: TransitionParameters, prior: Transitioning): Transitioning {\n const result = new Transitioning(this._properties);\n for (const property of Object.keys(this._values)) {\n result._values[property] = this._values[property].transitioned(parameters, prior._values[property]);\n }\n return result;\n }\n\n untransitioned(): Transitioning {\n const result = new Transitioning(this._properties);\n for (const property of Object.keys(this._values)) {\n result._values[property] = this._values[property].untransitioned();\n }\n return result;\n }\n}\n\n/**\n * @internal\n * `TransitioningPropertyValue` implements the first of two intermediate steps in the evaluation chain of a paint\n * property value. In this step, transitions between old and new values are handled: as long as the transition is in\n * progress, `TransitioningPropertyValue` maintains a reference to the prior value, and interpolates between it and\n * the new value based on the current time and the configured transition duration and delay. The product is the next\n * step in the evaluation chain: the \"possibly evaluated\" result type `R`. See below for more on this concept.\n */\nclass TransitioningPropertyValue {\n property: Property;\n value: PropertyValue;\n prior: TransitioningPropertyValue;\n begin: TimePoint;\n end: TimePoint;\n\n constructor(property: Property,\n value: PropertyValue,\n prior: TransitioningPropertyValue,\n transition: TransitionSpecification,\n now: TimePoint) {\n this.property = property;\n this.value = value;\n this.begin = now + transition.delay || 0;\n this.end = this.begin + transition.duration || 0;\n if (property.specification.transition && (transition.delay || transition.duration)) {\n this.prior = prior;\n }\n }\n\n possiblyEvaluate(\n parameters: EvaluationParameters,\n canonical: CanonicalTileID,\n availableImages: Array\n ): R {\n const now = parameters.now || 0;\n const finalValue = this.value.possiblyEvaluate(parameters, canonical, availableImages);\n const prior = this.prior;\n if (!prior) {\n // No prior value.\n return finalValue;\n } else if (now > this.end) {\n // Transition from prior value is now complete.\n this.prior = null;\n return finalValue;\n } else if (this.value.isDataDriven()) {\n // Transitions to data-driven properties are not supported.\n // We snap immediately to the data-driven value so that, when we perform layout,\n // we see the data-driven function and can use it to populate vertex buffers.\n this.prior = null;\n return finalValue;\n } else if (now < this.begin) {\n // Transition hasn't started yet.\n return prior.possiblyEvaluate(parameters, canonical, availableImages);\n } else {\n // Interpolate between recursively-calculated prior value and final.\n const t = (now - this.begin) / (this.end - this.begin);\n return this.property.interpolate(prior.possiblyEvaluate(parameters, canonical, availableImages), finalValue, easeCubicInOut(t));\n }\n }\n}\n\n/**\n * @internal\n * `Transitioning` stores a map of all (property name, `TransitioningPropertyValue`) pairs for paint properties of a\n * given layer type. It can calculate the possibly-evaluated values for all of them at once, producing a\n * `PossiblyEvaluated` instance for the same set of properties.\n */\nexport class Transitioning {\n _properties: Properties;\n _values: {[K in keyof Props]: PossiblyEvaluatedPropertyValue};\n\n constructor(properties: Properties) {\n this._properties = properties;\n this._values = (Object.create(properties.defaultTransitioningPropertyValues) as any);\n }\n\n possiblyEvaluate(\n parameters: EvaluationParameters,\n canonical?: CanonicalTileID,\n availableImages?: Array\n ): PossiblyEvaluated {\n const result = new PossiblyEvaluated(this._properties);\n for (const property of Object.keys(this._values)) {\n result._values[property] = this._values[property].possiblyEvaluate(parameters, canonical, availableImages);\n }\n return result;\n }\n\n hasTransition() {\n for (const property of Object.keys(this._values)) {\n if (this._values[property].prior) {\n return true;\n }\n }\n return false;\n }\n}\n\n// ------- Layout -------\n\n/**\n * Because layout properties are not transitionable, they have a simpler representation and evaluation chain than\n * paint properties: `PropertyValue`s are possibly evaluated, producing possibly evaluated values, which are then\n * fully evaluated.\n *\n * `Layout` stores a map of all (property name, `PropertyValue`) pairs for layout properties of a\n * given layer type. It can calculate the possibly-evaluated values for all of them at once, producing a\n * `PossiblyEvaluated` instance for the same set of properties.\n */\nexport class Layout {\n _properties: Properties;\n _values: {[K in keyof Props]: PropertyValue>};\n\n constructor(properties: Properties) {\n this._properties = properties;\n this._values = (Object.create(properties.defaultPropertyValues) as any);\n }\n\n hasValue(name: S) {\n return this._values[name].value !== undefined;\n }\n\n getValue(name: S) {\n return clone(this._values[name].value);\n }\n\n setValue(name: S, value: any) {\n this._values[name] = new PropertyValue(this._values[name].property, value === null ? undefined : clone(value)) as any;\n }\n\n serialize() {\n const result: any = {};\n for (const property of Object.keys(this._values)) {\n const value = this.getValue(property as keyof Props);\n if (value !== undefined) {\n result[property] = value;\n }\n }\n return result;\n }\n\n possiblyEvaluate(\n parameters: EvaluationParameters,\n canonical?: CanonicalTileID,\n availableImages?: Array\n ): PossiblyEvaluated {\n const result = new PossiblyEvaluated(this._properties);\n for (const property of Object.keys(this._values)) {\n result._values[property] = this._values[property].possiblyEvaluate(parameters, canonical, availableImages);\n }\n return result;\n }\n}\n\n// ------- PossiblyEvaluated -------\n\n/**\n * \"Possibly evaluated value\" is an intermediate stage in the evaluation chain for both paint and layout property\n * values. The purpose of this stage is to optimize away unnecessary recalculations for data-driven properties. Code\n * which uses data-driven property values must assume that the value is dependent on feature data, and request that it\n * be evaluated for each feature. But when that property value is in fact a constant or camera function, the calculation\n * will not actually depend on the feature, and we can benefit from returning the prior result of having done the\n * evaluation once, ahead of time, in an intermediate step whose inputs are just the value and \"global\" parameters\n * such as current zoom level.\n *\n * `PossiblyEvaluatedValue` represents the three possible outcomes of this step: if the input value was a constant or\n * camera expression, then the \"possibly evaluated\" result is a constant value. Otherwise, the input value was either\n * a source or composite expression, and we must defer final evaluation until supplied a feature. We separate\n * the source and composite cases because they are handled differently when generating GL attributes, buffers, and\n * uniforms.\n *\n * Note that `PossiblyEvaluatedValue` (and `PossiblyEvaluatedPropertyValue`, below) are _not_ used for properties that\n * do not allow data-driven values. For such properties, we know that the \"possibly evaluated\" result is always a constant\n * scalar value. See below.\n */\ntype PossiblyEvaluatedValue = {\n kind: 'constant';\n value: T;\n} | SourceExpression | CompositeExpression;\n\n/**\n * @internal\n * `PossiblyEvaluatedPropertyValue` is used for data-driven paint and layout property values. It holds a\n * `PossiblyEvaluatedValue` and the `GlobalProperties` that were used to generate it. You're not allowed to supply\n * a different set of `GlobalProperties` when performing the final evaluation because they would be ignored in the\n * case where the input value was a constant or camera function.\n */\nexport class PossiblyEvaluatedPropertyValue {\n property: DataDrivenProperty;\n value: PossiblyEvaluatedValue;\n parameters: EvaluationParameters;\n\n constructor(property: DataDrivenProperty, value: PossiblyEvaluatedValue, parameters: EvaluationParameters) {\n this.property = property;\n this.value = value;\n this.parameters = parameters;\n }\n\n isConstant(): boolean {\n return this.value.kind === 'constant';\n }\n\n constantOr(value: T): T {\n if (this.value.kind === 'constant') {\n return this.value.value;\n } else {\n return value;\n }\n }\n\n evaluate(\n feature: Feature,\n featureState: FeatureState,\n canonical?: CanonicalTileID,\n availableImages?: Array\n ): T {\n return this.property.evaluate(this.value, this.parameters, feature, featureState, canonical, availableImages);\n }\n}\n\n/**\n * @internal\n * `PossiblyEvaluated` stores a map of all (property name, `R`) pairs for paint or layout properties of a\n * given layer type.\n */\nexport class PossiblyEvaluated {\n _properties: Properties;\n _values: PossibleEvaluatedProps;\n\n constructor(properties: Properties) {\n this._properties = properties;\n this._values = Object.create(properties.defaultPossiblyEvaluatedValues);\n }\n\n get(name: S): PossibleEvaluatedProps[S] {\n return this._values[name];\n }\n}\n\n/**\n * @internal\n * An implementation of `Property` for properties that do not permit data-driven (source or composite) expressions.\n * This restriction allows us to declare statically that the result of possibly evaluating this kind of property\n * is in fact always the scalar type `T`, and can be used without further evaluating the value on a per-feature basis.\n */\nexport class DataConstantProperty implements Property {\n specification: StylePropertySpecification;\n\n constructor(specification: StylePropertySpecification) {\n this.specification = specification;\n }\n\n possiblyEvaluate(value: PropertyValue, parameters: EvaluationParameters): T {\n if (value.isDataDriven()) throw new Error('Value should not be data driven');\n return value.expression.evaluate(parameters);\n }\n\n interpolate(a: T, b: T, t: number): T {\n const interpolationType = this.specification.type as keyof typeof interpolates;\n const interpolationFn = interpolates[interpolationType] as ((from: T, to: T, t: number) => T) | undefined;\n if (interpolationFn) {\n return interpolationFn(a, b, t);\n } else {\n return a;\n }\n }\n}\n\n/**\n * @internal\n * An implementation of `Property` for properties that permit data-driven (source or composite) expressions.\n * The result of possibly evaluating this kind of property is `PossiblyEvaluatedPropertyValue`; obtaining\n * a scalar value `T` requires further evaluation on a per-feature basis.\n */\nexport class DataDrivenProperty implements Property> {\n specification: StylePropertySpecification;\n overrides: any;\n\n constructor(specification: StylePropertySpecification, overrides?: any) {\n this.specification = specification;\n this.overrides = overrides;\n }\n\n possiblyEvaluate(\n value: PropertyValue>,\n parameters: EvaluationParameters,\n canonical?: CanonicalTileID,\n availableImages?: Array\n ): PossiblyEvaluatedPropertyValue {\n if (value.expression.kind === 'constant' || value.expression.kind === 'camera') {\n return new PossiblyEvaluatedPropertyValue(this, {kind: 'constant', value: value.expression.evaluate(parameters, null, {}, canonical, availableImages)}, parameters);\n } else {\n return new PossiblyEvaluatedPropertyValue(this, value.expression, parameters);\n }\n }\n\n interpolate(\n a: PossiblyEvaluatedPropertyValue,\n b: PossiblyEvaluatedPropertyValue,\n t: number\n ): PossiblyEvaluatedPropertyValue {\n // If either possibly-evaluated value is non-constant, give up: we aren't able to interpolate data-driven values.\n if (a.value.kind !== 'constant' || b.value.kind !== 'constant') {\n return a;\n }\n\n // Special case hack solely for fill-outline-color. The undefined value is subsequently handled in\n // FillStyleLayer#recalculate, which sets fill-outline-color to the fill-color value if the former\n // is a PossiblyEvaluatedPropertyValue containing a constant undefined value. In addition to the\n // return value here, the other source of a PossiblyEvaluatedPropertyValue containing a constant\n // undefined value is the \"default value\" for fill-outline-color held in\n // `Properties#defaultPossiblyEvaluatedValues`, which serves as the prototype of\n // `PossiblyEvaluated#_values`.\n if (a.value.value === undefined || b.value.value === undefined) {\n return new PossiblyEvaluatedPropertyValue(this, {kind: 'constant', value: undefined}, a.parameters);\n }\n\n const interpolationType = this.specification.type as keyof typeof interpolates;\n const interpolationFn = interpolates[interpolationType] as ((from: T, to: T, t: number) => T) | undefined;\n if (interpolationFn) {\n const interpolatedValue = interpolationFn(a.value.value, b.value.value, t);\n return new PossiblyEvaluatedPropertyValue(this, {kind: 'constant', value: interpolatedValue}, a.parameters);\n } else {\n return a;\n }\n }\n\n evaluate(\n value: PossiblyEvaluatedValue,\n parameters: EvaluationParameters,\n feature: Feature,\n featureState: FeatureState,\n canonical?: CanonicalTileID,\n availableImages?: Array\n ): T {\n if (value.kind === 'constant') {\n return value.value;\n } else {\n return value.evaluate(parameters, feature, featureState, canonical, availableImages);\n }\n }\n}\n\n/**\n * @internal\n * An implementation of `Property` for data driven `line-pattern` which are transitioned by cross-fading\n * rather than interpolation.\n */\n\nexport class CrossFadedDataDrivenProperty extends DataDrivenProperty> {\n\n possiblyEvaluate(\n value: PropertyValue, PossiblyEvaluatedPropertyValue>>,\n parameters: EvaluationParameters,\n canonical?: CanonicalTileID,\n availableImages?: Array\n ): PossiblyEvaluatedPropertyValue> {\n if (value.value === undefined) {\n return new PossiblyEvaluatedPropertyValue(this, {kind: 'constant', value: undefined}, parameters);\n } else if (value.expression.kind === 'constant') {\n const evaluatedValue = value.expression.evaluate(parameters, null, {}, canonical, availableImages);\n const isImageExpression = value.property.specification.type as any === 'resolvedImage';\n const constantValue = isImageExpression && typeof evaluatedValue !== 'string' ? evaluatedValue.name : evaluatedValue;\n const constant = this._calculate(constantValue, constantValue, constantValue, parameters);\n return new PossiblyEvaluatedPropertyValue(this, {kind: 'constant', value: constant}, parameters);\n } else if (value.expression.kind === 'camera') {\n const cameraVal = this._calculate(\n value.expression.evaluate({zoom: parameters.zoom - 1.0}),\n value.expression.evaluate({zoom: parameters.zoom}),\n value.expression.evaluate({zoom: parameters.zoom + 1.0}),\n parameters);\n return new PossiblyEvaluatedPropertyValue(this, {kind: 'constant', value: cameraVal}, parameters);\n } else {\n // source or composite expression\n return new PossiblyEvaluatedPropertyValue(this, value.expression, parameters);\n }\n }\n\n evaluate(\n value: PossiblyEvaluatedValue>,\n globals: EvaluationParameters,\n feature: Feature,\n featureState: FeatureState,\n canonical?: CanonicalTileID,\n availableImages?: Array\n ): CrossFaded {\n if (value.kind === 'source') {\n const constant = value.evaluate(globals, feature, featureState, canonical, availableImages);\n return this._calculate(constant, constant, constant, globals);\n } else if (value.kind === 'composite') {\n return this._calculate(\n value.evaluate({zoom: Math.floor(globals.zoom) - 1.0}, feature, featureState),\n value.evaluate({zoom: Math.floor(globals.zoom)}, feature, featureState),\n value.evaluate({zoom: Math.floor(globals.zoom) + 1.0}, feature, featureState),\n globals);\n } else {\n return value.value;\n }\n }\n\n _calculate(min: T, mid: T, max: T, parameters: EvaluationParameters): CrossFaded {\n const z = parameters.zoom;\n return z > parameters.zoomHistory.lastIntegerZoom ? {from: min, to: mid} : {from: max, to: mid};\n }\n\n interpolate(a: PossiblyEvaluatedPropertyValue>): PossiblyEvaluatedPropertyValue> {\n return a;\n }\n}\n/**\n * @internal\n * An implementation of `Property` for `*-pattern` and `line-dasharray`, which are transitioned by cross-fading\n * rather than interpolation.\n */\nexport class CrossFadedProperty implements Property> {\n specification: StylePropertySpecification;\n\n constructor(specification: StylePropertySpecification) {\n this.specification = specification;\n }\n\n possiblyEvaluate(\n value: PropertyValue>,\n parameters: EvaluationParameters,\n canonical?: CanonicalTileID,\n availableImages?: Array\n ): CrossFaded {\n if (value.value === undefined) {\n return undefined;\n } else if (value.expression.kind === 'constant') {\n const constant = value.expression.evaluate(parameters, null, {}, canonical, availableImages);\n return this._calculate(constant, constant, constant, parameters);\n } else {\n return this._calculate(\n value.expression.evaluate(new EvaluationParameters(Math.floor(parameters.zoom - 1.0), parameters)),\n value.expression.evaluate(new EvaluationParameters(Math.floor(parameters.zoom), parameters)),\n value.expression.evaluate(new EvaluationParameters(Math.floor(parameters.zoom + 1.0), parameters)),\n parameters);\n }\n }\n\n _calculate(min: T, mid: T, max: T, parameters: EvaluationParameters): CrossFaded {\n const z = parameters.zoom;\n return z > parameters.zoomHistory.lastIntegerZoom ? {from: min, to: mid} : {from: max, to: mid};\n }\n\n interpolate(a?: CrossFaded | null): CrossFaded {\n return a;\n }\n}\n\n/**\n * @internal\n * An implementation of `Property` for `heatmap-color` and `line-gradient`. Interpolation is a no-op, and\n * evaluation returns a boolean value in order to indicate its presence, but the real\n * evaluation happens in StyleLayer classes.\n */\n\nexport class ColorRampProperty implements Property {\n specification: StylePropertySpecification;\n\n constructor(specification: StylePropertySpecification) {\n this.specification = specification;\n }\n\n possiblyEvaluate(\n value: PropertyValue,\n parameters: EvaluationParameters,\n canonical?: CanonicalTileID,\n availableImages?: Array\n ): boolean {\n return !!value.expression.evaluate(parameters, null, {}, canonical, availableImages);\n }\n\n interpolate(): boolean { return false; }\n}\n\n/**\n * @internal\n * `Properties` holds objects containing default values for the layout or paint property set of a given\n * layer type. These objects are immutable, and they are used as the prototypes for the `_values` members of\n * `Transitionable`, `Transitioning`, `Layout`, and `PossiblyEvaluated`. This allows these classes to avoid\n * doing work in the common case where a property has no explicit value set and should be considered to take\n * on the default value: using `for (const property of Object.keys(this._values))`, they can iterate over\n * only the _own_ properties of `_values`, skipping repeated calculation of transitions and possible/final\n * evaluations for defaults, the result of which will always be the same.\n */\nexport class Properties {\n properties: Props;\n defaultPropertyValues: {[K in keyof Props]: PropertyValue};\n defaultTransitionablePropertyValues: {[K in keyof Props]: TransitionablePropertyValue};\n defaultTransitioningPropertyValues: {[K in keyof Props]: TransitioningPropertyValue};\n defaultPossiblyEvaluatedValues: {[K in keyof Props]: PossiblyEvaluatedPropertyValue};\n overridableProperties: Array;\n\n constructor(properties: Props) {\n this.properties = properties;\n this.defaultPropertyValues = ({} as any);\n this.defaultTransitionablePropertyValues = ({} as any);\n this.defaultTransitioningPropertyValues = ({} as any);\n this.defaultPossiblyEvaluatedValues = ({} as any);\n this.overridableProperties = ([] as any);\n\n for (const property in properties) {\n const prop = properties[property] as any;\n if (prop.specification.overridable) {\n this.overridableProperties.push(property);\n }\n const defaultPropertyValue = this.defaultPropertyValues[property] =\n new PropertyValue(prop, undefined);\n const defaultTransitionablePropertyValue = this.defaultTransitionablePropertyValues[property] =\n new TransitionablePropertyValue(prop);\n this.defaultTransitioningPropertyValues[property] =\n defaultTransitionablePropertyValue.untransitioned();\n this.defaultPossiblyEvaluatedValues[property] =\n defaultPropertyValue.possiblyEvaluate({} as any);\n }\n }\n}\n\nregister('DataDrivenProperty', DataDrivenProperty);\nregister('DataConstantProperty', DataConstantProperty);\nregister('CrossFadedDataDrivenProperty', CrossFadedDataDrivenProperty);\nregister('CrossFadedProperty', CrossFadedProperty);\nregister('ColorRampProperty', ColorRampProperty);\n","import {filterObject} from '../util/util';\n\nimport {latest as styleSpec, supportsPropertyExpression} from '@maplibre/maplibre-gl-style-spec';\nimport {\n validateStyle,\n validateLayoutProperty,\n validatePaintProperty,\n emitValidationErrors\n} from './validate_style';\nimport {Evented} from '../util/evented';\nimport {Layout, Transitionable, type Transitioning, type Properties, PossiblyEvaluated, PossiblyEvaluatedPropertyValue} from './properties';\n\nimport type {Bucket} from '../data/bucket';\nimport type Point from '@mapbox/point-geometry';\nimport type {FeatureFilter, FeatureState,\n LayerSpecification,\n FilterSpecification} from '@maplibre/maplibre-gl-style-spec';\nimport type {TransitionParameters, PropertyValue} from './properties';\nimport {type EvaluationParameters} from './evaluation_parameters';\nimport type {CrossfadeParameters} from './evaluation_parameters';\n\nimport type {IReadonlyTransform} from '../geo/transform_interface';\nimport type {CustomLayerInterface} from './style_layer/custom_style_layer';\nimport type {Map} from '../ui/map';\nimport type {StyleSetterOptions} from './style';\nimport {type mat4} from 'gl-matrix';\nimport type {VectorTileFeature} from '@mapbox/vector-tile';\n\nconst TRANSITION_SUFFIX = '-transition';\n\n/**\n * A base class for style layers\n */\nexport abstract class StyleLayer extends Evented {\n id: string;\n metadata: unknown;\n type: LayerSpecification['type'] | CustomLayerInterface['type'];\n source: string;\n sourceLayer: string;\n minzoom: number;\n maxzoom: number;\n filter: FilterSpecification | void;\n visibility: 'visible' | 'none' | void;\n _crossfadeParameters: CrossfadeParameters;\n\n _unevaluatedLayout: Layout;\n readonly layout: unknown;\n\n _transitionablePaint: Transitionable;\n _transitioningPaint: Transitioning;\n readonly paint: unknown;\n\n _featureFilter: FeatureFilter;\n\n readonly onAdd: ((map: Map) => void);\n readonly onRemove: ((map: Map) => void);\n\n queryRadius?(bucket: Bucket): number;\n queryIntersectsFeature?(\n queryGeometry: Array,\n feature: VectorTileFeature,\n featureState: FeatureState,\n geometry: Array>,\n zoom: number,\n transform: IReadonlyTransform,\n pixelsToTileUnits: number,\n pixelPosMatrix: mat4\n ): boolean | number;\n\n constructor(layer: LayerSpecification | CustomLayerInterface, properties: Readonly<{\n layout?: Properties;\n paint?: Properties;\n }>) {\n super();\n\n this.id = layer.id;\n this.type = layer.type;\n this._featureFilter = {filter: () => true, needGeometry: false};\n\n if (layer.type === 'custom') return;\n\n layer = (layer as any as LayerSpecification);\n\n this.metadata = layer.metadata;\n this.minzoom = layer.minzoom;\n this.maxzoom = layer.maxzoom;\n\n if (layer.type !== 'background') {\n this.source = layer.source;\n this.sourceLayer = layer['source-layer'];\n this.filter = layer.filter;\n }\n\n if (properties.layout) {\n this._unevaluatedLayout = new Layout(properties.layout);\n }\n\n if (properties.paint) {\n this._transitionablePaint = new Transitionable(properties.paint);\n\n for (const property in layer.paint) {\n this.setPaintProperty(property, layer.paint[property], {validate: false});\n }\n for (const property in layer.layout) {\n this.setLayoutProperty(property, layer.layout[property], {validate: false});\n }\n\n this._transitioningPaint = this._transitionablePaint.untransitioned();\n //$FlowFixMe\n this.paint = new PossiblyEvaluated(properties.paint);\n }\n }\n\n getCrossfadeParameters() {\n return this._crossfadeParameters;\n }\n\n getLayoutProperty(name: string) {\n if (name === 'visibility') {\n return this.visibility;\n }\n\n return this._unevaluatedLayout.getValue(name);\n }\n\n setLayoutProperty(name: string, value: any, options: StyleSetterOptions = {}) {\n if (value !== null && value !== undefined) {\n const key = `layers.${this.id}.layout.${name}`;\n if (this._validate(validateLayoutProperty, key, name, value, options)) {\n return;\n }\n }\n\n if (name === 'visibility') {\n this.visibility = value;\n return;\n }\n\n this._unevaluatedLayout.setValue(name, value);\n }\n\n getPaintProperty(name: string) {\n if (name.endsWith(TRANSITION_SUFFIX)) {\n return this._transitionablePaint.getTransition(name.slice(0, -TRANSITION_SUFFIX.length));\n } else {\n return this._transitionablePaint.getValue(name);\n }\n }\n\n setPaintProperty(name: string, value: unknown, options: StyleSetterOptions = {}) {\n if (value !== null && value !== undefined) {\n const key = `layers.${this.id}.paint.${name}`;\n if (this._validate(validatePaintProperty, key, name, value, options)) {\n return false;\n }\n }\n\n if (name.endsWith(TRANSITION_SUFFIX)) {\n this._transitionablePaint.setTransition(name.slice(0, -TRANSITION_SUFFIX.length), (value as any) || undefined);\n return false;\n } else {\n const transitionable = this._transitionablePaint._values[name];\n const isCrossFadedProperty = transitionable.property.specification['property-type'] === 'cross-faded-data-driven';\n const wasDataDriven = transitionable.value.isDataDriven();\n const oldValue = transitionable.value;\n\n this._transitionablePaint.setValue(name, value);\n this._handleSpecialPaintPropertyUpdate(name);\n\n const newValue = this._transitionablePaint._values[name].value;\n const isDataDriven = newValue.isDataDriven();\n\n // if a cross-faded value is changed, we need to make sure the new icons get added to each tile's iconAtlas\n // so a call to _updateLayer is necessary, and we return true from this function so it gets called in\n // Style#setPaintProperty\n return isDataDriven || wasDataDriven || isCrossFadedProperty || this._handleOverridablePaintPropertyUpdate(name, oldValue, newValue);\n }\n }\n\n _handleSpecialPaintPropertyUpdate(_: string) {\n // No-op; can be overridden by derived classes.\n }\n\n // eslint-disable-next-line @typescript-eslint/no-unused-vars\n _handleOverridablePaintPropertyUpdate(name: string, oldValue: PropertyValue, newValue: PropertyValue): boolean {\n // No-op; can be overridden by derived classes.\n return false;\n }\n\n isHidden(zoom: number) {\n if (this.minzoom && zoom < this.minzoom) return true;\n if (this.maxzoom && zoom >= this.maxzoom) return true;\n return this.visibility === 'none';\n }\n\n updateTransitions(parameters: TransitionParameters) {\n this._transitioningPaint = this._transitionablePaint.transitioned(parameters, this._transitioningPaint);\n }\n\n hasTransition() {\n return this._transitioningPaint.hasTransition();\n }\n\n recalculate(parameters: EvaluationParameters, availableImages: Array) {\n if (parameters.getCrossfadeParameters) {\n this._crossfadeParameters = parameters.getCrossfadeParameters();\n }\n\n if (this._unevaluatedLayout) {\n (this as any).layout = this._unevaluatedLayout.possiblyEvaluate(parameters, undefined, availableImages);\n }\n\n (this as any).paint = this._transitioningPaint.possiblyEvaluate(parameters, undefined, availableImages);\n }\n\n serialize(): LayerSpecification {\n const output: LayerSpecification = {\n 'id': this.id,\n 'type': this.type as LayerSpecification['type'],\n 'source': this.source,\n 'source-layer': this.sourceLayer,\n 'metadata': this.metadata,\n 'minzoom': this.minzoom,\n 'maxzoom': this.maxzoom,\n 'filter': this.filter as FilterSpecification,\n 'layout': this._unevaluatedLayout && this._unevaluatedLayout.serialize(),\n 'paint': this._transitionablePaint && this._transitionablePaint.serialize()\n };\n\n if (this.visibility) {\n output.layout = output.layout || {};\n output.layout.visibility = this.visibility;\n }\n\n return filterObject(output, (value, key) => {\n return value !== undefined &&\n !(key === 'layout' && !Object.keys(value).length) &&\n !(key === 'paint' && !Object.keys(value).length);\n });\n }\n\n _validate(validate: Function, key: string, name: string, value: unknown, options: StyleSetterOptions = {}) {\n if (options && options.validate === false) {\n return false;\n }\n return emitValidationErrors(this, validate.call(validateStyle, {\n key,\n layerType: this.type,\n objectKey: name,\n value,\n styleSpec,\n // Workaround for https://github.com/mapbox/mapbox-gl-js/issues/2407\n style: {glyphs: true, sprite: true}\n }));\n }\n\n is3D() {\n return false;\n }\n\n isTileClipped() {\n return false;\n }\n\n hasOffscreenPass() {\n return false;\n }\n\n resize() {\n // noop\n }\n\n isStateDependent() {\n for (const property in (this as any).paint._values) {\n const value = (this as any).paint.get(property);\n if (!(value instanceof PossiblyEvaluatedPropertyValue) || !supportsPropertyExpression(value.property.specification)) {\n continue;\n }\n\n if ((value.value.kind === 'source' || value.value.kind === 'composite') &&\n value.value.isStateDependent) {\n return true;\n }\n }\n return false;\n }\n}\n","// Note: all \"sizes\" are measured in bytes\n\n/**\n * @internal\n * A view type size\n */\nconst viewTypes = {\n 'Int8': Int8Array,\n 'Uint8': Uint8Array,\n 'Int16': Int16Array,\n 'Uint16': Uint16Array,\n 'Int32': Int32Array,\n 'Uint32': Uint32Array,\n 'Float32': Float32Array\n};\n\n/**\n * @internal\n * A view type size\n */\nexport type ViewType = keyof typeof viewTypes;\n\n/** @internal */\nclass Struct {\n _pos1: number;\n _pos2: number;\n _pos4: number;\n _pos8: number;\n readonly _structArray: StructArray;\n\n // The following properties are defined on the prototype of sub classes.\n size: number;\n\n /**\n * @param structArray - The StructArray the struct is stored in\n * @param index - The index of the struct in the StructArray.\n */\n constructor(structArray: StructArray, index: number) {\n (this as any)._structArray = structArray;\n this._pos1 = index * this.size;\n this._pos2 = this._pos1 / 2;\n this._pos4 = this._pos1 / 4;\n this._pos8 = this._pos1 / 8;\n }\n}\n\nconst DEFAULT_CAPACITY = 128;\nconst RESIZE_MULTIPLIER = 5;\n\n/**\n * @internal\n * A struct array member\n */\nexport type StructArrayMember = {\n name: string;\n type: ViewType;\n components: number;\n offset: number;\n};\n\nexport type StructArrayLayout = {\n members: Array;\n size: number;\n alignment: number;\n};\n\n/**\n * An array that can be deserialized\n */\nexport type SerializedStructArray = {\n length: number;\n arrayBuffer: ArrayBuffer;\n};\n\n/**\n * @internal\n * `StructArray` provides an abstraction over `ArrayBuffer` and `TypedArray`\n * making it behave like an array of typed structs.\n *\n * Conceptually, a StructArray is comprised of elements, i.e., instances of its\n * associated struct type. Each particular struct type, together with an\n * alignment size, determines the memory layout of a StructArray whose elements\n * are of that type. Thus, for each such layout that we need, we have\n * a corresponding StructArrayLayout class, inheriting from StructArray and\n * implementing `emplaceBack()` and `_refreshViews()`.\n *\n * In some cases, where we need to access particular elements of a StructArray,\n * we implement a more specific subclass that inherits from one of the\n * StructArrayLayouts and adds a `get(i): T` accessor that returns a structured\n * object whose properties are proxies into the underlying memory space for the\n * i-th element. This affords the convenience of working with (seemingly) plain\n * Javascript objects without the overhead of serializing/deserializing them\n * into ArrayBuffers for efficient web worker transfer.\n */\nabstract class StructArray {\n capacity: number;\n length: number;\n isTransferred: boolean;\n arrayBuffer: ArrayBuffer;\n uint8: Uint8Array;\n\n // The following properties are defined on the prototype.\n members: Array;\n bytesPerElement: number;\n abstract emplaceBack(...v: number[]);\n abstract emplace(i: number, ...v: number[]);\n\n constructor() {\n this.isTransferred = false;\n this.capacity = -1;\n this.resize(0);\n }\n\n /**\n * Serialize a StructArray instance. Serializes both the raw data and the\n * metadata needed to reconstruct the StructArray base class during\n * deserialization.\n */\n static serialize(array: StructArray, transferables?: Array): SerializedStructArray {\n\n array._trim();\n\n if (transferables) {\n array.isTransferred = true;\n transferables.push(array.arrayBuffer);\n }\n\n return {\n length: array.length,\n arrayBuffer: array.arrayBuffer,\n };\n }\n\n static deserialize(input: SerializedStructArray) {\n const structArray = Object.create(this.prototype);\n structArray.arrayBuffer = input.arrayBuffer;\n structArray.length = input.length;\n structArray.capacity = input.arrayBuffer.byteLength / structArray.bytesPerElement;\n structArray._refreshViews();\n return structArray;\n }\n\n /**\n * Resize the array to discard unused capacity.\n */\n _trim() {\n if (this.length !== this.capacity) {\n this.capacity = this.length;\n this.arrayBuffer = this.arrayBuffer.slice(0, this.length * this.bytesPerElement);\n this._refreshViews();\n }\n }\n\n /**\n * Resets the length of the array to 0 without de-allocating capacity.\n */\n clear() {\n this.length = 0;\n }\n\n /**\n * Resize the array.\n * If `n` is greater than the current length then additional elements with undefined values are added.\n * If `n` is less than the current length then the array will be reduced to the first `n` elements.\n * @param n - The new size of the array.\n */\n resize(n: number) {\n this.reserve(n);\n this.length = n;\n }\n\n /**\n * Indicate a planned increase in size, so that any necessary allocation may\n * be done once, ahead of time.\n * @param n - The expected size of the array.\n */\n reserve(n: number) {\n if (n > this.capacity) {\n this.capacity = Math.max(n, Math.floor(this.capacity * RESIZE_MULTIPLIER), DEFAULT_CAPACITY);\n this.arrayBuffer = new ArrayBuffer(this.capacity * this.bytesPerElement);\n\n const oldUint8Array = this.uint8;\n this._refreshViews();\n if (oldUint8Array) this.uint8.set(oldUint8Array);\n }\n }\n\n /**\n * Create TypedArray views for the current ArrayBuffer.\n */\n _refreshViews() {\n throw new Error('_refreshViews() must be implemented by each concrete StructArray layout');\n }\n}\n\n/**\n * Given a list of member fields, create a full StructArrayLayout, in\n * particular calculating the correct byte offset for each field. This data\n * is used at build time to generate StructArrayLayout_*#emplaceBack() and\n * other accessors, and at runtime for binding vertex buffer attributes.\n */\nfunction createLayout(\n members: Array<{\n name: string;\n type: ViewType;\n readonly components?: number;\n }>,\n alignment: number = 1\n): StructArrayLayout {\n\n let offset = 0;\n let maxSize = 0;\n const layoutMembers = members.map((member) => {\n const typeSize = sizeOf(member.type);\n const memberOffset = offset = align(offset, Math.max(alignment, typeSize));\n const components = member.components || 1;\n\n maxSize = Math.max(maxSize, typeSize);\n offset += typeSize * components;\n\n return {\n name: member.name,\n type: member.type,\n components,\n offset: memberOffset,\n };\n });\n\n const size = align(offset, Math.max(maxSize, alignment));\n\n return {\n members: layoutMembers,\n size,\n alignment\n };\n}\n\nfunction sizeOf(type: ViewType): number {\n return viewTypes[type].BYTES_PER_ELEMENT;\n}\n\nfunction align(offset: number, size: number): number {\n return Math.ceil(offset / size) * size;\n}\n\nexport {StructArray, Struct, viewTypes, createLayout};\n","// This file is generated. Edit build/generate-struct-arrays.ts, then run `npm run codegen`.\n\nimport {Struct, StructArray} from '../util/struct_array';\nimport {register} from '../util/web_worker_transfer';\nimport Point from '@mapbox/point-geometry';\n\n/**\n * @internal\n * Implementation of the StructArray layout:\n * [0] - Int16[2]\n *\n */\nclass StructArrayLayout2i4 extends StructArray {\n uint8: Uint8Array;\n int16: Int16Array;\n\n _refreshViews() {\n this.uint8 = new Uint8Array(this.arrayBuffer);\n this.int16 = new Int16Array(this.arrayBuffer);\n }\n\n public emplaceBack(v0: number, v1: number) {\n const i = this.length;\n this.resize(i + 1);\n return this.emplace(i, v0, v1);\n }\n\n public emplace(i: number, v0: number, v1: number) {\n const o2 = i * 2;\n this.int16[o2 + 0] = v0;\n this.int16[o2 + 1] = v1;\n return i;\n }\n}\n\nStructArrayLayout2i4.prototype.bytesPerElement = 4;\nregister('StructArrayLayout2i4', StructArrayLayout2i4);\n\n/**\n * @internal\n * Implementation of the StructArray layout:\n * [0] - Int16[3]\n *\n */\nclass StructArrayLayout3i6 extends StructArray {\n uint8: Uint8Array;\n int16: Int16Array;\n\n _refreshViews() {\n this.uint8 = new Uint8Array(this.arrayBuffer);\n this.int16 = new Int16Array(this.arrayBuffer);\n }\n\n public emplaceBack(v0: number, v1: number, v2: number) {\n const i = this.length;\n this.resize(i + 1);\n return this.emplace(i, v0, v1, v2);\n }\n\n public emplace(i: number, v0: number, v1: number, v2: number) {\n const o2 = i * 3;\n this.int16[o2 + 0] = v0;\n this.int16[o2 + 1] = v1;\n this.int16[o2 + 2] = v2;\n return i;\n }\n}\n\nStructArrayLayout3i6.prototype.bytesPerElement = 6;\nregister('StructArrayLayout3i6', StructArrayLayout3i6);\n\n/**\n * @internal\n * Implementation of the StructArray layout:\n * [0] - Int16[4]\n *\n */\nclass StructArrayLayout4i8 extends StructArray {\n uint8: Uint8Array;\n int16: Int16Array;\n\n _refreshViews() {\n this.uint8 = new Uint8Array(this.arrayBuffer);\n this.int16 = new Int16Array(this.arrayBuffer);\n }\n\n public emplaceBack(v0: number, v1: number, v2: number, v3: number) {\n const i = this.length;\n this.resize(i + 1);\n return this.emplace(i, v0, v1, v2, v3);\n }\n\n public emplace(i: number, v0: number, v1: number, v2: number, v3: number) {\n const o2 = i * 4;\n this.int16[o2 + 0] = v0;\n this.int16[o2 + 1] = v1;\n this.int16[o2 + 2] = v2;\n this.int16[o2 + 3] = v3;\n return i;\n }\n}\n\nStructArrayLayout4i8.prototype.bytesPerElement = 8;\nregister('StructArrayLayout4i8', StructArrayLayout4i8);\n\n/**\n * @internal\n * Implementation of the StructArray layout:\n * [0] - Int16[2]\n * [4] - Int16[4]\n *\n */\nclass StructArrayLayout2i4i12 extends StructArray {\n uint8: Uint8Array;\n int16: Int16Array;\n\n _refreshViews() {\n this.uint8 = new Uint8Array(this.arrayBuffer);\n this.int16 = new Int16Array(this.arrayBuffer);\n }\n\n public emplaceBack(v0: number, v1: number, v2: number, v3: number, v4: number, v5: number) {\n const i = this.length;\n this.resize(i + 1);\n return this.emplace(i, v0, v1, v2, v3, v4, v5);\n }\n\n public emplace(i: number, v0: number, v1: number, v2: number, v3: number, v4: number, v5: number) {\n const o2 = i * 6;\n this.int16[o2 + 0] = v0;\n this.int16[o2 + 1] = v1;\n this.int16[o2 + 2] = v2;\n this.int16[o2 + 3] = v3;\n this.int16[o2 + 4] = v4;\n this.int16[o2 + 5] = v5;\n return i;\n }\n}\n\nStructArrayLayout2i4i12.prototype.bytesPerElement = 12;\nregister('StructArrayLayout2i4i12', StructArrayLayout2i4i12);\n\n/**\n * @internal\n * Implementation of the StructArray layout:\n * [0] - Int16[2]\n * [4] - Uint8[4]\n *\n */\nclass StructArrayLayout2i4ub8 extends StructArray {\n uint8: Uint8Array;\n int16: Int16Array;\n\n _refreshViews() {\n this.uint8 = new Uint8Array(this.arrayBuffer);\n this.int16 = new Int16Array(this.arrayBuffer);\n }\n\n public emplaceBack(v0: number, v1: number, v2: number, v3: number, v4: number, v5: number) {\n const i = this.length;\n this.resize(i + 1);\n return this.emplace(i, v0, v1, v2, v3, v4, v5);\n }\n\n public emplace(i: number, v0: number, v1: number, v2: number, v3: number, v4: number, v5: number) {\n const o2 = i * 4;\n const o1 = i * 8;\n this.int16[o2 + 0] = v0;\n this.int16[o2 + 1] = v1;\n this.uint8[o1 + 4] = v2;\n this.uint8[o1 + 5] = v3;\n this.uint8[o1 + 6] = v4;\n this.uint8[o1 + 7] = v5;\n return i;\n }\n}\n\nStructArrayLayout2i4ub8.prototype.bytesPerElement = 8;\nregister('StructArrayLayout2i4ub8', StructArrayLayout2i4ub8);\n\n/**\n * @internal\n * Implementation of the StructArray layout:\n * [0] - Float32[2]\n *\n */\nclass StructArrayLayout2f8 extends StructArray {\n uint8: Uint8Array;\n float32: Float32Array;\n\n _refreshViews() {\n this.uint8 = new Uint8Array(this.arrayBuffer);\n this.float32 = new Float32Array(this.arrayBuffer);\n }\n\n public emplaceBack(v0: number, v1: number) {\n const i = this.length;\n this.resize(i + 1);\n return this.emplace(i, v0, v1);\n }\n\n public emplace(i: number, v0: number, v1: number) {\n const o4 = i * 2;\n this.float32[o4 + 0] = v0;\n this.float32[o4 + 1] = v1;\n return i;\n }\n}\n\nStructArrayLayout2f8.prototype.bytesPerElement = 8;\nregister('StructArrayLayout2f8', StructArrayLayout2f8);\n\n/**\n * @internal\n * Implementation of the StructArray layout:\n * [0] - Uint16[10]\n *\n */\nclass StructArrayLayout10ui20 extends StructArray {\n uint8: Uint8Array;\n uint16: Uint16Array;\n\n _refreshViews() {\n this.uint8 = new Uint8Array(this.arrayBuffer);\n this.uint16 = new Uint16Array(this.arrayBuffer);\n }\n\n public emplaceBack(v0: number, v1: number, v2: number, v3: number, v4: number, v5: number, v6: number, v7: number, v8: number, v9: number) {\n const i = this.length;\n this.resize(i + 1);\n return this.emplace(i, v0, v1, v2, v3, v4, v5, v6, v7, v8, v9);\n }\n\n public emplace(i: number, v0: number, v1: number, v2: number, v3: number, v4: number, v5: number, v6: number, v7: number, v8: number, v9: number) {\n const o2 = i * 10;\n this.uint16[o2 + 0] = v0;\n this.uint16[o2 + 1] = v1;\n this.uint16[o2 + 2] = v2;\n this.uint16[o2 + 3] = v3;\n this.uint16[o2 + 4] = v4;\n this.uint16[o2 + 5] = v5;\n this.uint16[o2 + 6] = v6;\n this.uint16[o2 + 7] = v7;\n this.uint16[o2 + 8] = v8;\n this.uint16[o2 + 9] = v9;\n return i;\n }\n}\n\nStructArrayLayout10ui20.prototype.bytesPerElement = 20;\nregister('StructArrayLayout10ui20', StructArrayLayout10ui20);\n\n/**\n * @internal\n * Implementation of the StructArray layout:\n * [0] - Int16[4]\n * [8] - Uint16[4]\n * [16] - Int16[4]\n *\n */\nclass StructArrayLayout4i4ui4i24 extends StructArray {\n uint8: Uint8Array;\n int16: Int16Array;\n uint16: Uint16Array;\n\n _refreshViews() {\n this.uint8 = new Uint8Array(this.arrayBuffer);\n this.int16 = new Int16Array(this.arrayBuffer);\n this.uint16 = new Uint16Array(this.arrayBuffer);\n }\n\n public emplaceBack(v0: number, v1: number, v2: number, v3: number, v4: number, v5: number, v6: number, v7: number, v8: number, v9: number, v10: number, v11: number) {\n const i = this.length;\n this.resize(i + 1);\n return this.emplace(i, v0, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11);\n }\n\n public emplace(i: number, v0: number, v1: number, v2: number, v3: number, v4: number, v5: number, v6: number, v7: number, v8: number, v9: number, v10: number, v11: number) {\n const o2 = i * 12;\n this.int16[o2 + 0] = v0;\n this.int16[o2 + 1] = v1;\n this.int16[o2 + 2] = v2;\n this.int16[o2 + 3] = v3;\n this.uint16[o2 + 4] = v4;\n this.uint16[o2 + 5] = v5;\n this.uint16[o2 + 6] = v6;\n this.uint16[o2 + 7] = v7;\n this.int16[o2 + 8] = v8;\n this.int16[o2 + 9] = v9;\n this.int16[o2 + 10] = v10;\n this.int16[o2 + 11] = v11;\n return i;\n }\n}\n\nStructArrayLayout4i4ui4i24.prototype.bytesPerElement = 24;\nregister('StructArrayLayout4i4ui4i24', StructArrayLayout4i4ui4i24);\n\n/**\n * @internal\n * Implementation of the StructArray layout:\n * [0] - Float32[3]\n *\n */\nclass StructArrayLayout3f12 extends StructArray {\n uint8: Uint8Array;\n float32: Float32Array;\n\n _refreshViews() {\n this.uint8 = new Uint8Array(this.arrayBuffer);\n this.float32 = new Float32Array(this.arrayBuffer);\n }\n\n public emplaceBack(v0: number, v1: number, v2: number) {\n const i = this.length;\n this.resize(i + 1);\n return this.emplace(i, v0, v1, v2);\n }\n\n public emplace(i: number, v0: number, v1: number, v2: number) {\n const o4 = i * 3;\n this.float32[o4 + 0] = v0;\n this.float32[o4 + 1] = v1;\n this.float32[o4 + 2] = v2;\n return i;\n }\n}\n\nStructArrayLayout3f12.prototype.bytesPerElement = 12;\nregister('StructArrayLayout3f12', StructArrayLayout3f12);\n\n/**\n * @internal\n * Implementation of the StructArray layout:\n * [0] - Uint32[1]\n *\n */\nclass StructArrayLayout1ul4 extends StructArray {\n uint8: Uint8Array;\n uint32: Uint32Array;\n\n _refreshViews() {\n this.uint8 = new Uint8Array(this.arrayBuffer);\n this.uint32 = new Uint32Array(this.arrayBuffer);\n }\n\n public emplaceBack(v0: number) {\n const i = this.length;\n this.resize(i + 1);\n return this.emplace(i, v0);\n }\n\n public emplace(i: number, v0: number) {\n const o4 = i * 1;\n this.uint32[o4 + 0] = v0;\n return i;\n }\n}\n\nStructArrayLayout1ul4.prototype.bytesPerElement = 4;\nregister('StructArrayLayout1ul4', StructArrayLayout1ul4);\n\n/**\n * @internal\n * Implementation of the StructArray layout:\n * [0] - Int16[6]\n * [12] - Uint32[1]\n * [16] - Uint16[2]\n *\n */\nclass StructArrayLayout6i1ul2ui20 extends StructArray {\n uint8: Uint8Array;\n int16: Int16Array;\n uint32: Uint32Array;\n uint16: Uint16Array;\n\n _refreshViews() {\n this.uint8 = new Uint8Array(this.arrayBuffer);\n this.int16 = new Int16Array(this.arrayBuffer);\n this.uint32 = new Uint32Array(this.arrayBuffer);\n this.uint16 = new Uint16Array(this.arrayBuffer);\n }\n\n public emplaceBack(v0: number, v1: number, v2: number, v3: number, v4: number, v5: number, v6: number, v7: number, v8: number) {\n const i = this.length;\n this.resize(i + 1);\n return this.emplace(i, v0, v1, v2, v3, v4, v5, v6, v7, v8);\n }\n\n public emplace(i: number, v0: number, v1: number, v2: number, v3: number, v4: number, v5: number, v6: number, v7: number, v8: number) {\n const o2 = i * 10;\n const o4 = i * 5;\n this.int16[o2 + 0] = v0;\n this.int16[o2 + 1] = v1;\n this.int16[o2 + 2] = v2;\n this.int16[o2 + 3] = v3;\n this.int16[o2 + 4] = v4;\n this.int16[o2 + 5] = v5;\n this.uint32[o4 + 3] = v6;\n this.uint16[o2 + 8] = v7;\n this.uint16[o2 + 9] = v8;\n return i;\n }\n}\n\nStructArrayLayout6i1ul2ui20.prototype.bytesPerElement = 20;\nregister('StructArrayLayout6i1ul2ui20', StructArrayLayout6i1ul2ui20);\n\n/**\n * @internal\n * Implementation of the StructArray layout:\n * [0] - Int16[2]\n * [4] - Int16[2]\n * [8] - Int16[2]\n *\n */\nclass StructArrayLayout2i2i2i12 extends StructArray {\n uint8: Uint8Array;\n int16: Int16Array;\n\n _refreshViews() {\n this.uint8 = new Uint8Array(this.arrayBuffer);\n this.int16 = new Int16Array(this.arrayBuffer);\n }\n\n public emplaceBack(v0: number, v1: number, v2: number, v3: number, v4: number, v5: number) {\n const i = this.length;\n this.resize(i + 1);\n return this.emplace(i, v0, v1, v2, v3, v4, v5);\n }\n\n public emplace(i: number, v0: number, v1: number, v2: number, v3: number, v4: number, v5: number) {\n const o2 = i * 6;\n this.int16[o2 + 0] = v0;\n this.int16[o2 + 1] = v1;\n this.int16[o2 + 2] = v2;\n this.int16[o2 + 3] = v3;\n this.int16[o2 + 4] = v4;\n this.int16[o2 + 5] = v5;\n return i;\n }\n}\n\nStructArrayLayout2i2i2i12.prototype.bytesPerElement = 12;\nregister('StructArrayLayout2i2i2i12', StructArrayLayout2i2i2i12);\n\n/**\n * @internal\n * Implementation of the StructArray layout:\n * [0] - Float32[2]\n * [8] - Float32[1]\n * [12] - Int16[2]\n *\n */\nclass StructArrayLayout2f1f2i16 extends StructArray {\n uint8: Uint8Array;\n float32: Float32Array;\n int16: Int16Array;\n\n _refreshViews() {\n this.uint8 = new Uint8Array(this.arrayBuffer);\n this.float32 = new Float32Array(this.arrayBuffer);\n this.int16 = new Int16Array(this.arrayBuffer);\n }\n\n public emplaceBack(v0: number, v1: number, v2: number, v3: number, v4: number) {\n const i = this.length;\n this.resize(i + 1);\n return this.emplace(i, v0, v1, v2, v3, v4);\n }\n\n public emplace(i: number, v0: number, v1: number, v2: number, v3: number, v4: number) {\n const o4 = i * 4;\n const o2 = i * 8;\n this.float32[o4 + 0] = v0;\n this.float32[o4 + 1] = v1;\n this.float32[o4 + 2] = v2;\n this.int16[o2 + 6] = v3;\n this.int16[o2 + 7] = v4;\n return i;\n }\n}\n\nStructArrayLayout2f1f2i16.prototype.bytesPerElement = 16;\nregister('StructArrayLayout2f1f2i16', StructArrayLayout2f1f2i16);\n\n/**\n * @internal\n * Implementation of the StructArray layout:\n * [0] - Uint8[2]\n * [4] - Float32[2]\n * [12] - Int16[2]\n *\n */\nclass StructArrayLayout2ub2f2i16 extends StructArray {\n uint8: Uint8Array;\n float32: Float32Array;\n int16: Int16Array;\n\n _refreshViews() {\n this.uint8 = new Uint8Array(this.arrayBuffer);\n this.float32 = new Float32Array(this.arrayBuffer);\n this.int16 = new Int16Array(this.arrayBuffer);\n }\n\n public emplaceBack(v0: number, v1: number, v2: number, v3: number, v4: number, v5: number) {\n const i = this.length;\n this.resize(i + 1);\n return this.emplace(i, v0, v1, v2, v3, v4, v5);\n }\n\n public emplace(i: number, v0: number, v1: number, v2: number, v3: number, v4: number, v5: number) {\n const o1 = i * 16;\n const o4 = i * 4;\n const o2 = i * 8;\n this.uint8[o1 + 0] = v0;\n this.uint8[o1 + 1] = v1;\n this.float32[o4 + 1] = v2;\n this.float32[o4 + 2] = v3;\n this.int16[o2 + 6] = v4;\n this.int16[o2 + 7] = v5;\n return i;\n }\n}\n\nStructArrayLayout2ub2f2i16.prototype.bytesPerElement = 16;\nregister('StructArrayLayout2ub2f2i16', StructArrayLayout2ub2f2i16);\n\n/**\n * @internal\n * Implementation of the StructArray layout:\n * [0] - Uint16[3]\n *\n */\nclass StructArrayLayout3ui6 extends StructArray {\n uint8: Uint8Array;\n uint16: Uint16Array;\n\n _refreshViews() {\n this.uint8 = new Uint8Array(this.arrayBuffer);\n this.uint16 = new Uint16Array(this.arrayBuffer);\n }\n\n public emplaceBack(v0: number, v1: number, v2: number) {\n const i = this.length;\n this.resize(i + 1);\n return this.emplace(i, v0, v1, v2);\n }\n\n public emplace(i: number, v0: number, v1: number, v2: number) {\n const o2 = i * 3;\n this.uint16[o2 + 0] = v0;\n this.uint16[o2 + 1] = v1;\n this.uint16[o2 + 2] = v2;\n return i;\n }\n}\n\nStructArrayLayout3ui6.prototype.bytesPerElement = 6;\nregister('StructArrayLayout3ui6', StructArrayLayout3ui6);\n\n/**\n * @internal\n * Implementation of the StructArray layout:\n * [0] - Int16[2]\n * [4] - Uint16[2]\n * [8] - Uint32[3]\n * [20] - Uint16[3]\n * [28] - Float32[2]\n * [36] - Uint8[3]\n * [40] - Uint32[1]\n * [44] - Int16[1]\n *\n */\nclass StructArrayLayout2i2ui3ul3ui2f3ub1ul1i48 extends StructArray {\n uint8: Uint8Array;\n int16: Int16Array;\n uint16: Uint16Array;\n uint32: Uint32Array;\n float32: Float32Array;\n\n _refreshViews() {\n this.uint8 = new Uint8Array(this.arrayBuffer);\n this.int16 = new Int16Array(this.arrayBuffer);\n this.uint16 = new Uint16Array(this.arrayBuffer);\n this.uint32 = new Uint32Array(this.arrayBuffer);\n this.float32 = new Float32Array(this.arrayBuffer);\n }\n\n public emplaceBack(v0: number, v1: number, v2: number, v3: number, v4: number, v5: number, v6: number, v7: number, v8: number, v9: number, v10: number, v11: number, v12: number, v13: number, v14: number, v15: number, v16: number) {\n const i = this.length;\n this.resize(i + 1);\n return this.emplace(i, v0, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16);\n }\n\n public emplace(i: number, v0: number, v1: number, v2: number, v3: number, v4: number, v5: number, v6: number, v7: number, v8: number, v9: number, v10: number, v11: number, v12: number, v13: number, v14: number, v15: number, v16: number) {\n const o2 = i * 24;\n const o4 = i * 12;\n const o1 = i * 48;\n this.int16[o2 + 0] = v0;\n this.int16[o2 + 1] = v1;\n this.uint16[o2 + 2] = v2;\n this.uint16[o2 + 3] = v3;\n this.uint32[o4 + 2] = v4;\n this.uint32[o4 + 3] = v5;\n this.uint32[o4 + 4] = v6;\n this.uint16[o2 + 10] = v7;\n this.uint16[o2 + 11] = v8;\n this.uint16[o2 + 12] = v9;\n this.float32[o4 + 7] = v10;\n this.float32[o4 + 8] = v11;\n this.uint8[o1 + 36] = v12;\n this.uint8[o1 + 37] = v13;\n this.uint8[o1 + 38] = v14;\n this.uint32[o4 + 10] = v15;\n this.int16[o2 + 22] = v16;\n return i;\n }\n}\n\nStructArrayLayout2i2ui3ul3ui2f3ub1ul1i48.prototype.bytesPerElement = 48;\nregister('StructArrayLayout2i2ui3ul3ui2f3ub1ul1i48', StructArrayLayout2i2ui3ul3ui2f3ub1ul1i48);\n\n/**\n * @internal\n * Implementation of the StructArray layout:\n * [0] - Int16[8]\n * [16] - Uint16[15]\n * [48] - Uint32[1]\n * [52] - Float32[2]\n * [60] - Uint16[2]\n *\n */\nclass StructArrayLayout8i15ui1ul2f2ui64 extends StructArray {\n uint8: Uint8Array;\n int16: Int16Array;\n uint16: Uint16Array;\n uint32: Uint32Array;\n float32: Float32Array;\n\n _refreshViews() {\n this.uint8 = new Uint8Array(this.arrayBuffer);\n this.int16 = new Int16Array(this.arrayBuffer);\n this.uint16 = new Uint16Array(this.arrayBuffer);\n this.uint32 = new Uint32Array(this.arrayBuffer);\n this.float32 = new Float32Array(this.arrayBuffer);\n }\n\n public emplaceBack(v0: number, v1: number, v2: number, v3: number, v4: number, v5: number, v6: number, v7: number, v8: number, v9: number, v10: number, v11: number, v12: number, v13: number, v14: number, v15: number, v16: number, v17: number, v18: number, v19: number, v20: number, v21: number, v22: number, v23: number, v24: number, v25: number, v26: number, v27: number) {\n const i = this.length;\n this.resize(i + 1);\n return this.emplace(i, v0, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27);\n }\n\n public emplace(i: number, v0: number, v1: number, v2: number, v3: number, v4: number, v5: number, v6: number, v7: number, v8: number, v9: number, v10: number, v11: number, v12: number, v13: number, v14: number, v15: number, v16: number, v17: number, v18: number, v19: number, v20: number, v21: number, v22: number, v23: number, v24: number, v25: number, v26: number, v27: number) {\n const o2 = i * 32;\n const o4 = i * 16;\n this.int16[o2 + 0] = v0;\n this.int16[o2 + 1] = v1;\n this.int16[o2 + 2] = v2;\n this.int16[o2 + 3] = v3;\n this.int16[o2 + 4] = v4;\n this.int16[o2 + 5] = v5;\n this.int16[o2 + 6] = v6;\n this.int16[o2 + 7] = v7;\n this.uint16[o2 + 8] = v8;\n this.uint16[o2 + 9] = v9;\n this.uint16[o2 + 10] = v10;\n this.uint16[o2 + 11] = v11;\n this.uint16[o2 + 12] = v12;\n this.uint16[o2 + 13] = v13;\n this.uint16[o2 + 14] = v14;\n this.uint16[o2 + 15] = v15;\n this.uint16[o2 + 16] = v16;\n this.uint16[o2 + 17] = v17;\n this.uint16[o2 + 18] = v18;\n this.uint16[o2 + 19] = v19;\n this.uint16[o2 + 20] = v20;\n this.uint16[o2 + 21] = v21;\n this.uint16[o2 + 22] = v22;\n this.uint32[o4 + 12] = v23;\n this.float32[o4 + 13] = v24;\n this.float32[o4 + 14] = v25;\n this.uint16[o2 + 30] = v26;\n this.uint16[o2 + 31] = v27;\n return i;\n }\n}\n\nStructArrayLayout8i15ui1ul2f2ui64.prototype.bytesPerElement = 64;\nregister('StructArrayLayout8i15ui1ul2f2ui64', StructArrayLayout8i15ui1ul2f2ui64);\n\n/**\n * @internal\n * Implementation of the StructArray layout:\n * [0] - Float32[1]\n *\n */\nclass StructArrayLayout1f4 extends StructArray {\n uint8: Uint8Array;\n float32: Float32Array;\n\n _refreshViews() {\n this.uint8 = new Uint8Array(this.arrayBuffer);\n this.float32 = new Float32Array(this.arrayBuffer);\n }\n\n public emplaceBack(v0: number) {\n const i = this.length;\n this.resize(i + 1);\n return this.emplace(i, v0);\n }\n\n public emplace(i: number, v0: number) {\n const o4 = i * 1;\n this.float32[o4 + 0] = v0;\n return i;\n }\n}\n\nStructArrayLayout1f4.prototype.bytesPerElement = 4;\nregister('StructArrayLayout1f4', StructArrayLayout1f4);\n\n/**\n * @internal\n * Implementation of the StructArray layout:\n * [0] - Uint16[1]\n * [4] - Float32[2]\n *\n */\nclass StructArrayLayout1ui2f12 extends StructArray {\n uint8: Uint8Array;\n uint16: Uint16Array;\n float32: Float32Array;\n\n _refreshViews() {\n this.uint8 = new Uint8Array(this.arrayBuffer);\n this.uint16 = new Uint16Array(this.arrayBuffer);\n this.float32 = new Float32Array(this.arrayBuffer);\n }\n\n public emplaceBack(v0: number, v1: number, v2: number) {\n const i = this.length;\n this.resize(i + 1);\n return this.emplace(i, v0, v1, v2);\n }\n\n public emplace(i: number, v0: number, v1: number, v2: number) {\n const o2 = i * 6;\n const o4 = i * 3;\n this.uint16[o2 + 0] = v0;\n this.float32[o4 + 1] = v1;\n this.float32[o4 + 2] = v2;\n return i;\n }\n}\n\nStructArrayLayout1ui2f12.prototype.bytesPerElement = 12;\nregister('StructArrayLayout1ui2f12', StructArrayLayout1ui2f12);\n\n/**\n * @internal\n * Implementation of the StructArray layout:\n * [0] - Uint32[1]\n * [4] - Uint16[2]\n *\n */\nclass StructArrayLayout1ul2ui8 extends StructArray {\n uint8: Uint8Array;\n uint32: Uint32Array;\n uint16: Uint16Array;\n\n _refreshViews() {\n this.uint8 = new Uint8Array(this.arrayBuffer);\n this.uint32 = new Uint32Array(this.arrayBuffer);\n this.uint16 = new Uint16Array(this.arrayBuffer);\n }\n\n public emplaceBack(v0: number, v1: number, v2: number) {\n const i = this.length;\n this.resize(i + 1);\n return this.emplace(i, v0, v1, v2);\n }\n\n public emplace(i: number, v0: number, v1: number, v2: number) {\n const o4 = i * 2;\n const o2 = i * 4;\n this.uint32[o4 + 0] = v0;\n this.uint16[o2 + 2] = v1;\n this.uint16[o2 + 3] = v2;\n return i;\n }\n}\n\nStructArrayLayout1ul2ui8.prototype.bytesPerElement = 8;\nregister('StructArrayLayout1ul2ui8', StructArrayLayout1ul2ui8);\n\n/**\n * @internal\n * Implementation of the StructArray layout:\n * [0] - Uint16[2]\n *\n */\nclass StructArrayLayout2ui4 extends StructArray {\n uint8: Uint8Array;\n uint16: Uint16Array;\n\n _refreshViews() {\n this.uint8 = new Uint8Array(this.arrayBuffer);\n this.uint16 = new Uint16Array(this.arrayBuffer);\n }\n\n public emplaceBack(v0: number, v1: number) {\n const i = this.length;\n this.resize(i + 1);\n return this.emplace(i, v0, v1);\n }\n\n public emplace(i: number, v0: number, v1: number) {\n const o2 = i * 2;\n this.uint16[o2 + 0] = v0;\n this.uint16[o2 + 1] = v1;\n return i;\n }\n}\n\nStructArrayLayout2ui4.prototype.bytesPerElement = 4;\nregister('StructArrayLayout2ui4', StructArrayLayout2ui4);\n\n/**\n * @internal\n * Implementation of the StructArray layout:\n * [0] - Uint16[1]\n *\n */\nclass StructArrayLayout1ui2 extends StructArray {\n uint8: Uint8Array;\n uint16: Uint16Array;\n\n _refreshViews() {\n this.uint8 = new Uint8Array(this.arrayBuffer);\n this.uint16 = new Uint16Array(this.arrayBuffer);\n }\n\n public emplaceBack(v0: number) {\n const i = this.length;\n this.resize(i + 1);\n return this.emplace(i, v0);\n }\n\n public emplace(i: number, v0: number) {\n const o2 = i * 1;\n this.uint16[o2 + 0] = v0;\n return i;\n }\n}\n\nStructArrayLayout1ui2.prototype.bytesPerElement = 2;\nregister('StructArrayLayout1ui2', StructArrayLayout1ui2);\n\n/**\n * @internal\n * Implementation of the StructArray layout:\n * [0] - Float32[4]\n *\n */\nclass StructArrayLayout4f16 extends StructArray {\n uint8: Uint8Array;\n float32: Float32Array;\n\n _refreshViews() {\n this.uint8 = new Uint8Array(this.arrayBuffer);\n this.float32 = new Float32Array(this.arrayBuffer);\n }\n\n public emplaceBack(v0: number, v1: number, v2: number, v3: number) {\n const i = this.length;\n this.resize(i + 1);\n return this.emplace(i, v0, v1, v2, v3);\n }\n\n public emplace(i: number, v0: number, v1: number, v2: number, v3: number) {\n const o4 = i * 4;\n this.float32[o4 + 0] = v0;\n this.float32[o4 + 1] = v1;\n this.float32[o4 + 2] = v2;\n this.float32[o4 + 3] = v3;\n return i;\n }\n}\n\nStructArrayLayout4f16.prototype.bytesPerElement = 16;\nregister('StructArrayLayout4f16', StructArrayLayout4f16);\n\n/** @internal */\nclass CollisionBoxStruct extends Struct {\n _structArray: CollisionBoxArray;\n get anchorPointX() { return this._structArray.int16[this._pos2 + 0]; }\n get anchorPointY() { return this._structArray.int16[this._pos2 + 1]; }\n get x1() { return this._structArray.int16[this._pos2 + 2]; }\n get y1() { return this._structArray.int16[this._pos2 + 3]; }\n get x2() { return this._structArray.int16[this._pos2 + 4]; }\n get y2() { return this._structArray.int16[this._pos2 + 5]; }\n get featureIndex() { return this._structArray.uint32[this._pos4 + 3]; }\n get sourceLayerIndex() { return this._structArray.uint16[this._pos2 + 8]; }\n get bucketIndex() { return this._structArray.uint16[this._pos2 + 9]; }\n get anchorPoint() { return new Point(this.anchorPointX, this.anchorPointY); }\n}\n\nCollisionBoxStruct.prototype.size = 20;\n\nexport type CollisionBox = CollisionBoxStruct;\n\n/** @internal */\nexport class CollisionBoxArray extends StructArrayLayout6i1ul2ui20 {\n /**\n * Return the CollisionBoxStruct at the given location in the array.\n * @param index - The index of the element.\n */\n get(index: number): CollisionBoxStruct {\n return new CollisionBoxStruct(this, index);\n }\n}\n\nregister('CollisionBoxArray', CollisionBoxArray);\n\n/** @internal */\nclass PlacedSymbolStruct extends Struct {\n _structArray: PlacedSymbolArray;\n get anchorX() { return this._structArray.int16[this._pos2 + 0]; }\n get anchorY() { return this._structArray.int16[this._pos2 + 1]; }\n get glyphStartIndex() { return this._structArray.uint16[this._pos2 + 2]; }\n get numGlyphs() { return this._structArray.uint16[this._pos2 + 3]; }\n get vertexStartIndex() { return this._structArray.uint32[this._pos4 + 2]; }\n get lineStartIndex() { return this._structArray.uint32[this._pos4 + 3]; }\n get lineLength() { return this._structArray.uint32[this._pos4 + 4]; }\n get segment() { return this._structArray.uint16[this._pos2 + 10]; }\n get lowerSize() { return this._structArray.uint16[this._pos2 + 11]; }\n get upperSize() { return this._structArray.uint16[this._pos2 + 12]; }\n get lineOffsetX() { return this._structArray.float32[this._pos4 + 7]; }\n get lineOffsetY() { return this._structArray.float32[this._pos4 + 8]; }\n get writingMode() { return this._structArray.uint8[this._pos1 + 36]; }\n get placedOrientation() { return this._structArray.uint8[this._pos1 + 37]; }\n set placedOrientation(x: number) { this._structArray.uint8[this._pos1 + 37] = x; }\n get hidden() { return this._structArray.uint8[this._pos1 + 38]; }\n set hidden(x: number) { this._structArray.uint8[this._pos1 + 38] = x; }\n get crossTileID() { return this._structArray.uint32[this._pos4 + 10]; }\n set crossTileID(x: number) { this._structArray.uint32[this._pos4 + 10] = x; }\n get associatedIconIndex() { return this._structArray.int16[this._pos2 + 22]; }\n}\n\nPlacedSymbolStruct.prototype.size = 48;\n\nexport type PlacedSymbol = PlacedSymbolStruct;\n\n/** @internal */\nexport class PlacedSymbolArray extends StructArrayLayout2i2ui3ul3ui2f3ub1ul1i48 {\n /**\n * Return the PlacedSymbolStruct at the given location in the array.\n * @param index - The index of the element.\n */\n get(index: number): PlacedSymbolStruct {\n return new PlacedSymbolStruct(this, index);\n }\n}\n\nregister('PlacedSymbolArray', PlacedSymbolArray);\n\n/** @internal */\nclass SymbolInstanceStruct extends Struct {\n _structArray: SymbolInstanceArray;\n get anchorX() { return this._structArray.int16[this._pos2 + 0]; }\n get anchorY() { return this._structArray.int16[this._pos2 + 1]; }\n get rightJustifiedTextSymbolIndex() { return this._structArray.int16[this._pos2 + 2]; }\n get centerJustifiedTextSymbolIndex() { return this._structArray.int16[this._pos2 + 3]; }\n get leftJustifiedTextSymbolIndex() { return this._structArray.int16[this._pos2 + 4]; }\n get verticalPlacedTextSymbolIndex() { return this._structArray.int16[this._pos2 + 5]; }\n get placedIconSymbolIndex() { return this._structArray.int16[this._pos2 + 6]; }\n get verticalPlacedIconSymbolIndex() { return this._structArray.int16[this._pos2 + 7]; }\n get key() { return this._structArray.uint16[this._pos2 + 8]; }\n get textBoxStartIndex() { return this._structArray.uint16[this._pos2 + 9]; }\n get textBoxEndIndex() { return this._structArray.uint16[this._pos2 + 10]; }\n get verticalTextBoxStartIndex() { return this._structArray.uint16[this._pos2 + 11]; }\n get verticalTextBoxEndIndex() { return this._structArray.uint16[this._pos2 + 12]; }\n get iconBoxStartIndex() { return this._structArray.uint16[this._pos2 + 13]; }\n get iconBoxEndIndex() { return this._structArray.uint16[this._pos2 + 14]; }\n get verticalIconBoxStartIndex() { return this._structArray.uint16[this._pos2 + 15]; }\n get verticalIconBoxEndIndex() { return this._structArray.uint16[this._pos2 + 16]; }\n get featureIndex() { return this._structArray.uint16[this._pos2 + 17]; }\n get numHorizontalGlyphVertices() { return this._structArray.uint16[this._pos2 + 18]; }\n get numVerticalGlyphVertices() { return this._structArray.uint16[this._pos2 + 19]; }\n get numIconVertices() { return this._structArray.uint16[this._pos2 + 20]; }\n get numVerticalIconVertices() { return this._structArray.uint16[this._pos2 + 21]; }\n get useRuntimeCollisionCircles() { return this._structArray.uint16[this._pos2 + 22]; }\n get crossTileID() { return this._structArray.uint32[this._pos4 + 12]; }\n set crossTileID(x: number) { this._structArray.uint32[this._pos4 + 12] = x; }\n get textBoxScale() { return this._structArray.float32[this._pos4 + 13]; }\n get collisionCircleDiameter() { return this._structArray.float32[this._pos4 + 14]; }\n get textAnchorOffsetStartIndex() { return this._structArray.uint16[this._pos2 + 30]; }\n get textAnchorOffsetEndIndex() { return this._structArray.uint16[this._pos2 + 31]; }\n}\n\nSymbolInstanceStruct.prototype.size = 64;\n\nexport type SymbolInstance = SymbolInstanceStruct;\n\n/** @internal */\nexport class SymbolInstanceArray extends StructArrayLayout8i15ui1ul2f2ui64 {\n /**\n * Return the SymbolInstanceStruct at the given location in the array.\n * @param index - The index of the element.\n */\n get(index: number): SymbolInstanceStruct {\n return new SymbolInstanceStruct(this, index);\n }\n}\n\nregister('SymbolInstanceArray', SymbolInstanceArray);\n\n/** @internal */\nexport class GlyphOffsetArray extends StructArrayLayout1f4 {\n getoffsetX(index: number) { return this.float32[index * 1 + 0]; }\n}\n\nregister('GlyphOffsetArray', GlyphOffsetArray);\n\n/** @internal */\nexport class SymbolLineVertexArray extends StructArrayLayout3i6 {\n getx(index: number) { return this.int16[index * 3 + 0]; }\n gety(index: number) { return this.int16[index * 3 + 1]; }\n gettileUnitDistanceFromAnchor(index: number) { return this.int16[index * 3 + 2]; }\n}\n\nregister('SymbolLineVertexArray', SymbolLineVertexArray);\n\n/** @internal */\nclass TextAnchorOffsetStruct extends Struct {\n _structArray: TextAnchorOffsetArray;\n get textAnchor() { return this._structArray.uint16[this._pos2 + 0]; }\n get textOffset0() { return this._structArray.float32[this._pos4 + 1]; }\n get textOffset1() { return this._structArray.float32[this._pos4 + 2]; }\n}\n\nTextAnchorOffsetStruct.prototype.size = 12;\n\nexport type TextAnchorOffset = TextAnchorOffsetStruct;\n\n/** @internal */\nexport class TextAnchorOffsetArray extends StructArrayLayout1ui2f12 {\n /**\n * Return the TextAnchorOffsetStruct at the given location in the array.\n * @param index - The index of the element.\n */\n get(index: number): TextAnchorOffsetStruct {\n return new TextAnchorOffsetStruct(this, index);\n }\n}\n\nregister('TextAnchorOffsetArray', TextAnchorOffsetArray);\n\n/** @internal */\nclass FeatureIndexStruct extends Struct {\n _structArray: FeatureIndexArray;\n get featureIndex() { return this._structArray.uint32[this._pos4 + 0]; }\n get sourceLayerIndex() { return this._structArray.uint16[this._pos2 + 2]; }\n get bucketIndex() { return this._structArray.uint16[this._pos2 + 3]; }\n}\n\nFeatureIndexStruct.prototype.size = 8;\n\nexport type FeatureIndex = FeatureIndexStruct;\n\n/** @internal */\nexport class FeatureIndexArray extends StructArrayLayout1ul2ui8 {\n /**\n * Return the FeatureIndexStruct at the given location in the array.\n * @param index - The index of the element.\n */\n get(index: number): FeatureIndexStruct {\n return new FeatureIndexStruct(this, index);\n }\n}\n\nregister('FeatureIndexArray', FeatureIndexArray);\n\nexport class PosArray extends StructArrayLayout2i4 {}\nexport class Pos3dArray extends StructArrayLayout3i6 {}\nexport class RasterBoundsArray extends StructArrayLayout4i8 {}\nexport class CircleLayoutArray extends StructArrayLayout2i4 {}\nexport class FillLayoutArray extends StructArrayLayout2i4 {}\nexport class FillExtrusionLayoutArray extends StructArrayLayout2i4i12 {}\nexport class HeatmapLayoutArray extends StructArrayLayout2i4 {}\nexport class LineLayoutArray extends StructArrayLayout2i4ub8 {}\nexport class LineExtLayoutArray extends StructArrayLayout2f8 {}\nexport class PatternLayoutArray extends StructArrayLayout10ui20 {}\nexport class SymbolLayoutArray extends StructArrayLayout4i4ui4i24 {}\nexport class SymbolDynamicLayoutArray extends StructArrayLayout3f12 {}\nexport class SymbolOpacityArray extends StructArrayLayout1ul4 {}\nexport class CollisionBoxLayoutArray extends StructArrayLayout2i2i2i12 {}\nexport class CollisionCircleLayoutArray extends StructArrayLayout2f1f2i16 {}\nexport class CollisionVertexArray extends StructArrayLayout2ub2f2i16 {}\nexport class QuadTriangleArray extends StructArrayLayout3ui6 {}\nexport class TriangleIndexArray extends StructArrayLayout3ui6 {}\nexport class LineIndexArray extends StructArrayLayout2ui4 {}\nexport class LineStripIndexArray extends StructArrayLayout1ui2 {}\nexport {\n StructArrayLayout2i4,\n StructArrayLayout3i6,\n StructArrayLayout4i8,\n StructArrayLayout2i4i12,\n StructArrayLayout2i4ub8,\n StructArrayLayout2f8,\n StructArrayLayout10ui20,\n StructArrayLayout4i4ui4i24,\n StructArrayLayout3f12,\n StructArrayLayout1ul4,\n StructArrayLayout6i1ul2ui20,\n StructArrayLayout2i2i2i12,\n StructArrayLayout2f1f2i16,\n StructArrayLayout2ub2f2i16,\n StructArrayLayout3ui6,\n StructArrayLayout2i2ui3ul3ui2f3ub1ul1i48,\n StructArrayLayout8i15ui1ul2f2ui64,\n StructArrayLayout1f4,\n StructArrayLayout1ui2f12,\n StructArrayLayout1ul2ui8,\n StructArrayLayout2ui4,\n StructArrayLayout1ui2,\n StructArrayLayout4f16\n};\n","import {createLayout} from '../../util/struct_array';\n\nconst layout = createLayout([\n {name: 'a_pos', components: 2, type: 'Int16'}\n], 4);\n\nexport default layout;\nexport const {members, size, alignment} = layout;\n","import {warnOnce} from '../util/util';\n\nimport {register} from '../util/web_worker_transfer';\n\nimport type {VertexArrayObject} from '../render/vertex_array_object';\nimport type {StructArray} from '../util/struct_array';\n\n/**\n * @internal\n * A single segment of a vector\n */\nexport type Segment = {\n sortKey?: number;\n vertexOffset: number;\n primitiveOffset: number;\n vertexLength: number;\n primitiveLength: number;\n vaos: {[_: string]: VertexArrayObject};\n};\n\n/**\n * @internal\n * Used for calculations on vector segments\n */\nexport class SegmentVector {\n static MAX_VERTEX_ARRAY_LENGTH: number;\n segments: Array;\n private _forceNewSegmentOnNextPrepare: boolean = false;\n\n constructor(segments: Array = []) {\n this.segments = segments;\n }\n\n /**\n * Returns the last segment if `numVertices` fits into it.\n * If there are no segments yet or `numVertices` doesn't fit into the last one, creates a new empty segment and returns it.\n */\n prepareSegment(\n numVertices: number,\n layoutVertexArray: StructArray,\n indexArray: StructArray,\n sortKey?: number\n ): Segment {\n const lastSegment: Segment = this.segments[this.segments.length - 1];\n\n if (numVertices > SegmentVector.MAX_VERTEX_ARRAY_LENGTH) {\n warnOnce(`Max vertices per segment is ${SegmentVector.MAX_VERTEX_ARRAY_LENGTH}: bucket requested ${numVertices}. Consider using the \\`fillLargeMeshArrays\\` function if you require meshes with more than ${SegmentVector.MAX_VERTEX_ARRAY_LENGTH} vertices.`);\n }\n\n if (this._forceNewSegmentOnNextPrepare || !lastSegment || lastSegment.vertexLength + numVertices > SegmentVector.MAX_VERTEX_ARRAY_LENGTH || lastSegment.sortKey !== sortKey) {\n return this.createNewSegment(layoutVertexArray, indexArray, sortKey);\n } else {\n return lastSegment;\n }\n }\n\n /**\n * Creates a new empty segment and returns it.\n */\n createNewSegment(\n layoutVertexArray: StructArray,\n indexArray: StructArray,\n sortKey?: number\n ): Segment {\n const segment: Segment = {\n vertexOffset: layoutVertexArray.length,\n primitiveOffset: indexArray.length,\n vertexLength: 0,\n primitiveLength: 0,\n vaos: {}\n };\n\n if (sortKey !== undefined) {\n segment.sortKey = sortKey;\n }\n\n // If this was set, we have no need to create a new segment on next prepareSegment call,\n // since this function already created a new, empty segment.\n this._forceNewSegmentOnNextPrepare = false;\n this.segments.push(segment);\n return segment;\n }\n\n /**\n * Returns the last segment, or creates a new segments if there are no segments yet.\n */\n getOrCreateLatestSegment(\n layoutVertexArray: StructArray,\n indexArray: StructArray,\n sortKey?: number\n ): Segment {\n return this.prepareSegment(0, layoutVertexArray, indexArray, sortKey);\n }\n\n /**\n * Causes the next call to {@link prepareSegment} to always return a new segment,\n * not reusing the current segment even if the new geometry would fit it.\n */\n forceNewSegmentOnNextPrepare() {\n this._forceNewSegmentOnNextPrepare = true;\n }\n\n get() {\n return this.segments;\n }\n\n destroy() {\n for (const segment of this.segments) {\n for (const k in segment.vaos) {\n segment.vaos[k].destroy();\n }\n }\n }\n\n static simpleSegment(\n vertexOffset: number,\n primitiveOffset: number,\n vertexLength: number,\n primitiveLength: number\n ): SegmentVector {\n return new SegmentVector([{\n vertexOffset,\n primitiveOffset,\n vertexLength,\n primitiveLength,\n vaos: {},\n sortKey: 0\n }]);\n }\n}\n\n/**\n * The maximum size of a vertex array. This limit is imposed by WebGL's 16 bit\n * addressing of vertex buffers.\n */\nSegmentVector.MAX_VERTEX_ARRAY_LENGTH = Math.pow(2, 16) - 1;\n\nregister('SegmentVector', SegmentVector);\n","import {clamp} from '../util/util';\n\n/**\n * Packs two numbers, interpreted as 8-bit unsigned integers, into a single\n * float. Unpack them in the shader using the `unpack_float()` function,\n * defined in _prelude.vertex.glsl\n */\nexport function packUint8ToFloat(a: number, b: number) {\n // coerce a and b to 8-bit ints\n a = clamp(Math.floor(a), 0, 255);\n b = clamp(Math.floor(b), 0, 255);\n return 256 * a + b;\n}\n","import {createLayout} from '../../util/struct_array';\n\nexport const patternAttributes = createLayout([\n // [tl.x, tl.y, br.x, br.y]\n {name: 'a_pattern_from', components: 4, type: 'Uint16'},\n {name: 'a_pattern_to', components: 4, type: 'Uint16'},\n {name: 'a_pixel_ratio_from', components: 1, type: 'Uint16'},\n {name: 'a_pixel_ratio_to', components: 1, type: 'Uint16'},\n]);\n","var murmur3 = require(\"./murmurhash3_gc.js\")\nvar murmur2 = require(\"./murmurhash2_gc.js\")\n\nmodule.exports = murmur3\nmodule.exports.murmur3 = murmur3\nmodule.exports.murmur2 = murmur2\n","/**\n * JS Implementation of MurmurHash3 (r136) (as of May 20, 2011)\n * \n * @author Gary Court\n * @see http://github.com/garycourt/murmurhash-js\n * @author Austin Appleby\n * @see http://sites.google.com/site/murmurhash/\n * \n * @param {string} key ASCII only\n * @param {number} seed Positive integer only\n * @return {number} 32-bit positive integer hash \n */\n\nfunction murmurhash3_32_gc(key, seed) {\n\tvar remainder, bytes, h1, h1b, c1, c1b, c2, c2b, k1, i;\n\t\n\tremainder = key.length & 3; // key.length % 4\n\tbytes = key.length - remainder;\n\th1 = seed;\n\tc1 = 0xcc9e2d51;\n\tc2 = 0x1b873593;\n\ti = 0;\n\t\n\twhile (i < bytes) {\n\t \tk1 = \n\t \t ((key.charCodeAt(i) & 0xff)) |\n\t \t ((key.charCodeAt(++i) & 0xff) << 8) |\n\t \t ((key.charCodeAt(++i) & 0xff) << 16) |\n\t \t ((key.charCodeAt(++i) & 0xff) << 24);\n\t\t++i;\n\t\t\n\t\tk1 = ((((k1 & 0xffff) * c1) + ((((k1 >>> 16) * c1) & 0xffff) << 16))) & 0xffffffff;\n\t\tk1 = (k1 << 15) | (k1 >>> 17);\n\t\tk1 = ((((k1 & 0xffff) * c2) + ((((k1 >>> 16) * c2) & 0xffff) << 16))) & 0xffffffff;\n\n\t\th1 ^= k1;\n h1 = (h1 << 13) | (h1 >>> 19);\n\t\th1b = ((((h1 & 0xffff) * 5) + ((((h1 >>> 16) * 5) & 0xffff) << 16))) & 0xffffffff;\n\t\th1 = (((h1b & 0xffff) + 0x6b64) + ((((h1b >>> 16) + 0xe654) & 0xffff) << 16));\n\t}\n\t\n\tk1 = 0;\n\t\n\tswitch (remainder) {\n\t\tcase 3: k1 ^= (key.charCodeAt(i + 2) & 0xff) << 16;\n\t\tcase 2: k1 ^= (key.charCodeAt(i + 1) & 0xff) << 8;\n\t\tcase 1: k1 ^= (key.charCodeAt(i) & 0xff);\n\t\t\n\t\tk1 = (((k1 & 0xffff) * c1) + ((((k1 >>> 16) * c1) & 0xffff) << 16)) & 0xffffffff;\n\t\tk1 = (k1 << 15) | (k1 >>> 17);\n\t\tk1 = (((k1 & 0xffff) * c2) + ((((k1 >>> 16) * c2) & 0xffff) << 16)) & 0xffffffff;\n\t\th1 ^= k1;\n\t}\n\t\n\th1 ^= key.length;\n\n\th1 ^= h1 >>> 16;\n\th1 = (((h1 & 0xffff) * 0x85ebca6b) + ((((h1 >>> 16) * 0x85ebca6b) & 0xffff) << 16)) & 0xffffffff;\n\th1 ^= h1 >>> 13;\n\th1 = ((((h1 & 0xffff) * 0xc2b2ae35) + ((((h1 >>> 16) * 0xc2b2ae35) & 0xffff) << 16))) & 0xffffffff;\n\th1 ^= h1 >>> 16;\n\n\treturn h1 >>> 0;\n}\n\nif(typeof module !== \"undefined\") {\n module.exports = murmurhash3_32_gc\n}","/**\n * JS Implementation of MurmurHash2\n * \n * @author Gary Court\n * @see http://github.com/garycourt/murmurhash-js\n * @author Austin Appleby\n * @see http://sites.google.com/site/murmurhash/\n * \n * @param {string} str ASCII only\n * @param {number} seed Positive integer only\n * @return {number} 32-bit positive integer hash\n */\n\nfunction murmurhash2_32_gc(str, seed) {\n var\n l = str.length,\n h = seed ^ l,\n i = 0,\n k;\n \n while (l >= 4) {\n \tk = \n \t ((str.charCodeAt(i) & 0xff)) |\n \t ((str.charCodeAt(++i) & 0xff) << 8) |\n \t ((str.charCodeAt(++i) & 0xff) << 16) |\n \t ((str.charCodeAt(++i) & 0xff) << 24);\n \n k = (((k & 0xffff) * 0x5bd1e995) + ((((k >>> 16) * 0x5bd1e995) & 0xffff) << 16));\n k ^= k >>> 24;\n k = (((k & 0xffff) * 0x5bd1e995) + ((((k >>> 16) * 0x5bd1e995) & 0xffff) << 16));\n\n\th = (((h & 0xffff) * 0x5bd1e995) + ((((h >>> 16) * 0x5bd1e995) & 0xffff) << 16)) ^ k;\n\n l -= 4;\n ++i;\n }\n \n switch (l) {\n case 3: h ^= (str.charCodeAt(i + 2) & 0xff) << 16;\n case 2: h ^= (str.charCodeAt(i + 1) & 0xff) << 8;\n case 1: h ^= (str.charCodeAt(i) & 0xff);\n h = (((h & 0xffff) * 0x5bd1e995) + ((((h >>> 16) * 0x5bd1e995) & 0xffff) << 16));\n }\n\n h ^= h >>> 13;\n h = (((h & 0xffff) * 0x5bd1e995) + ((((h >>> 16) * 0x5bd1e995) & 0xffff) << 16));\n h ^= h >>> 15;\n\n return h >>> 0;\n}\n\nif(typeof module !== undefined) {\n module.exports = murmurhash2_32_gc\n}\n","import murmur3 from 'murmurhash-js';\nimport {register} from '../util/web_worker_transfer';\n\ntype SerializedFeaturePositionMap = {\n ids: Float64Array;\n positions: Uint32Array;\n};\n\ntype FeaturePosition = {\n index: number;\n start: number;\n end: number;\n};\n\n// A transferable data structure that maps feature ids to their indices and buffer offsets\nexport class FeaturePositionMap {\n ids: Array;\n positions: Array;\n indexed: boolean;\n\n constructor() {\n this.ids = [];\n this.positions = [];\n this.indexed = false;\n }\n\n add(id: unknown, index: number, start: number, end: number) {\n this.ids.push(getNumericId(id));\n this.positions.push(index, start, end);\n }\n\n getPositions(id: unknown): Array {\n if (!this.indexed) throw new Error('Trying to get index, but feature positions are not indexed');\n\n const intId = getNumericId(id);\n\n // binary search for the first occurrence of id in this.ids;\n // relies on ids/positions being sorted by id, which happens in serialization\n let i = 0;\n let j = this.ids.length - 1;\n while (i < j) {\n const m = (i + j) >> 1;\n if (this.ids[m] >= intId) {\n j = m;\n } else {\n i = m + 1;\n }\n }\n const positions = [];\n while (this.ids[i] === intId) {\n const index = this.positions[3 * i];\n const start = this.positions[3 * i + 1];\n const end = this.positions[3 * i + 2];\n positions.push({index, start, end});\n i++;\n }\n return positions;\n }\n\n static serialize(map: FeaturePositionMap, transferables: Array): SerializedFeaturePositionMap {\n const ids = new Float64Array(map.ids);\n const positions = new Uint32Array(map.positions);\n\n sort(ids, positions, 0, ids.length - 1);\n\n if (transferables) {\n transferables.push(ids.buffer, positions.buffer);\n }\n\n return {ids, positions};\n }\n\n static deserialize(obj: SerializedFeaturePositionMap): FeaturePositionMap {\n const map = new FeaturePositionMap();\n // after transferring, we only use these arrays statically (no pushes),\n // so TypedArray vs Array distinction that flow points out doesn't matter\n map.ids = (obj.ids as any);\n map.positions = (obj.positions as any);\n map.indexed = true;\n return map;\n }\n}\n\nfunction getNumericId(value: unknown) {\n const numValue = +value;\n if (!isNaN(numValue) && numValue <= Number.MAX_SAFE_INTEGER) {\n return numValue;\n }\n return murmur3(String(value));\n}\n\n// custom quicksort that sorts ids, indices and offsets together (by ids)\n// uses Hoare partitioning & manual tail call optimization to avoid worst case scenarios\nfunction sort(ids, positions, left, right) {\n while (left < right) {\n const pivot = ids[(left + right) >> 1];\n let i = left - 1;\n let j = right + 1;\n\n while (true) {\n do i++; while (ids[i] < pivot);\n do j--; while (ids[j] > pivot);\n if (i >= j) break;\n swap(ids, i, j);\n swap(positions, 3 * i, 3 * j);\n swap(positions, 3 * i + 1, 3 * j + 1);\n swap(positions, 3 * i + 2, 3 * j + 2);\n }\n\n if (j - left < right - j) {\n sort(ids, positions, left, j);\n left = j + 1;\n } else {\n sort(ids, positions, j + 1, right);\n right = j;\n }\n }\n}\n\nfunction swap(arr, i, j) {\n const tmp = arr[i];\n arr[i] = arr[j];\n arr[j] = tmp;\n}\n\nregister('FeaturePositionMap', FeaturePositionMap);\n","import {Color} from '@maplibre/maplibre-gl-style-spec';\n\nimport type {Context} from '../gl/context';\nimport {type mat4, type vec2, type vec3, type vec4} from 'gl-matrix';\n\ntype $ObjMap any> = {\n [K in keyof T]: F extends (v: T[K]) => infer R ? R : never;\n};\n\nexport type UniformValues = $ObjMap(u: Uniform) => V>;\nexport type UniformLocations = {[_: string]: WebGLUniformLocation};\n\n/**\n * @internal\n * A base uniform abstract class\n */\nabstract class Uniform {\n gl: WebGLRenderingContext|WebGL2RenderingContext;\n location: WebGLUniformLocation;\n current: T;\n\n constructor(context: Context, location: WebGLUniformLocation) {\n this.gl = context.gl;\n this.location = location;\n }\n\n abstract set(v: T): void;\n}\n\nclass Uniform1i extends Uniform {\n constructor(context: Context, location: WebGLUniformLocation) {\n super(context, location);\n this.current = 0;\n }\n\n set(v: number): void {\n if (this.current !== v) {\n this.current = v;\n this.gl.uniform1i(this.location, v);\n }\n }\n}\n\nclass Uniform1f extends Uniform {\n constructor(context: Context, location: WebGLUniformLocation) {\n super(context, location);\n this.current = 0;\n }\n\n set(v: number): void {\n if (this.current !== v) {\n this.current = v;\n this.gl.uniform1f(this.location, v);\n }\n }\n}\n\nclass Uniform2f extends Uniform {\n constructor(context: Context, location: WebGLUniformLocation) {\n super(context, location);\n this.current = [0, 0];\n }\n\n set(v: vec2): void {\n if (v[0] !== this.current[0] || v[1] !== this.current[1]) {\n this.current = v;\n this.gl.uniform2f(this.location, v[0], v[1]);\n }\n }\n}\n\nclass Uniform3f extends Uniform {\n constructor(context: Context, location: WebGLUniformLocation) {\n super(context, location);\n this.current = [0, 0, 0];\n }\n\n set(v: vec3): void {\n if (v[0] !== this.current[0] || v[1] !== this.current[1] || v[2] !== this.current[2]) {\n this.current = v;\n this.gl.uniform3f(this.location, v[0], v[1], v[2]);\n }\n }\n}\n\nclass Uniform4f extends Uniform {\n constructor(context: Context, location: WebGLUniformLocation) {\n super(context, location);\n this.current = [0, 0, 0, 0];\n }\n\n set(v: vec4): void {\n if (v[0] !== this.current[0] || v[1] !== this.current[1] ||\n v[2] !== this.current[2] || v[3] !== this.current[3]) {\n this.current = v;\n this.gl.uniform4f(this.location, v[0], v[1], v[2], v[3]);\n }\n }\n}\n\nclass UniformColor extends Uniform {\n constructor(context: Context, location: WebGLUniformLocation) {\n super(context, location);\n this.current = Color.transparent;\n }\n\n set(v: Color): void {\n if (v.r !== this.current.r || v.g !== this.current.g ||\n v.b !== this.current.b || v.a !== this.current.a) {\n this.current = v;\n this.gl.uniform4f(this.location, v.r, v.g, v.b, v.a);\n }\n }\n}\n\nconst emptyMat4 = new Float32Array(16) as mat4;\nclass UniformMatrix4f extends Uniform {\n constructor(context: Context, location: WebGLUniformLocation) {\n super(context, location);\n this.current = emptyMat4;\n }\n\n set(v: mat4): void {\n // The vast majority of matrix comparisons that will trip this set\n // happen at i=12 or i=0, so we check those first to avoid lots of\n // unnecessary iteration:\n if (v[12] !== this.current[12] || v[0] !== this.current[0]) {\n this.current = v;\n this.gl.uniformMatrix4fv(this.location, false, v);\n return;\n }\n for (let i = 1; i < 16; i++) {\n if (v[i] !== this.current[i]) {\n this.current = v;\n this.gl.uniformMatrix4fv(this.location, false, v);\n break;\n }\n }\n }\n}\n\nexport {\n Uniform,\n Uniform1i,\n Uniform1f,\n Uniform2f,\n Uniform3f,\n Uniform4f,\n UniformColor,\n UniformMatrix4f\n};\n\n/**\n * @internal\n * A uniform bindings\n */\nexport type UniformBindings = {[_: string]: Uniform};\n","import {packUint8ToFloat} from '../shaders/encode_attribute';\nimport {type Color, supportsPropertyExpression} from '@maplibre/maplibre-gl-style-spec';\nimport {register} from '../util/web_worker_transfer';\nimport {PossiblyEvaluatedPropertyValue} from '../style/properties';\nimport {StructArrayLayout1f4, StructArrayLayout2f8, StructArrayLayout4f16, PatternLayoutArray} from './array_types.g';\nimport {clamp} from '../util/util';\nimport {patternAttributes} from './bucket/pattern_attributes';\nimport {EvaluationParameters} from '../style/evaluation_parameters';\nimport {FeaturePositionMap} from './feature_position_map';\nimport {type Uniform, Uniform1f, UniformColor, Uniform4f} from '../render/uniform_binding';\n\nimport type {UniformLocations} from '../render/uniform_binding';\n\nimport type {CanonicalTileID} from '../source/tile_id';\nimport type {Context} from '../gl/context';\nimport type {TypedStyleLayer} from '../style/style_layer/typed_style_layer';\nimport type {CrossfadeParameters} from '../style/evaluation_parameters';\nimport type {StructArray, StructArrayMember} from '../util/struct_array';\nimport type {VertexBuffer} from '../gl/vertex_buffer';\nimport type {ImagePosition} from '../render/image_atlas';\nimport type {\n Feature,\n FeatureState,\n GlobalProperties,\n SourceExpression,\n CompositeExpression,\n FormattedSection\n} from '@maplibre/maplibre-gl-style-spec';\nimport type {FeatureStates} from '../source/source_state';\nimport type {VectorTileLayer} from '@mapbox/vector-tile';\n\nexport type BinderUniform = {\n name: string;\n property: string;\n binding: Uniform;\n};\n\nfunction packColor(color: Color): [number, number] {\n return [\n packUint8ToFloat(255 * color.r, 255 * color.g),\n packUint8ToFloat(255 * color.b, 255 * color.a)\n ];\n}\n\n/**\n * `Binder` is the interface definition for the strategies for constructing,\n * uploading, and binding paint property data as GLSL attributes. Most style-\n * spec properties have a 1:1 relationship to shader attribute/uniforms, but\n * some require multiple values per feature to be passed to the GPU, and in\n * those cases we bind multiple attributes/uniforms.\n *\n * It has three implementations, one for each of the three strategies we use:\n *\n * * For _constant_ properties -- those whose value is a constant, or the constant\n * result of evaluating a camera expression at a particular camera position -- we\n * don't need a vertex attribute buffer, and instead use a uniform.\n * * For data expressions, we use a vertex buffer with a single attribute value,\n * the evaluated result of the source function for the given feature.\n * * For composite expressions, we use a vertex buffer with two attributes: min and\n * max values covering the range of zooms at which we expect the tile to be\n * displayed. These values are calculated by evaluating the composite expression for\n * the given feature at strategically chosen zoom levels. In addition to this\n * attribute data, we also use a uniform value which the shader uses to interpolate\n * between the min and max value at the final displayed zoom level. The use of a\n * uniform allows us to cheaply update the value on every frame.\n *\n * Note that the shader source varies depending on whether we're using a uniform or\n * attribute. We dynamically compile shaders at runtime to accommodate this.\n */\ninterface AttributeBinder {\n populatePaintArray(\n length: number,\n feature: Feature,\n imagePositions: {[_: string]: ImagePosition},\n canonical?: CanonicalTileID,\n formattedSection?: FormattedSection\n ): void;\n updatePaintArray(\n start: number,\n length: number,\n feature: Feature,\n featureState: FeatureState,\n imagePositions: {[_: string]: ImagePosition}\n ): void;\n upload(a: Context): void;\n destroy(): void;\n}\n\ninterface UniformBinder {\n uniformNames: Array;\n setUniform(\n uniform: Uniform,\n globals: GlobalProperties,\n currentValue: PossiblyEvaluatedPropertyValue,\n uniformName: string\n ): void;\n getBinding(context: Context, location: WebGLUniformLocation, name: string): Partial>;\n}\n\nclass ConstantBinder implements UniformBinder {\n value: unknown;\n type: string;\n uniformNames: Array;\n\n constructor(value: unknown, names: Array, type: string) {\n this.value = value;\n this.uniformNames = names.map(name => `u_${name}`);\n this.type = type;\n }\n\n setUniform(\n uniform: Uniform,\n globals: GlobalProperties,\n currentValue: PossiblyEvaluatedPropertyValue\n ): void {\n uniform.set(currentValue.constantOr(this.value));\n }\n\n getBinding(context: Context, location: WebGLUniformLocation, _: string): Partial> {\n return (this.type === 'color') ?\n new UniformColor(context, location) :\n new Uniform1f(context, location);\n }\n}\n\nclass CrossFadedConstantBinder implements UniformBinder {\n uniformNames: Array;\n patternFrom: Array;\n patternTo: Array;\n pixelRatioFrom: number;\n pixelRatioTo: number;\n\n constructor(value: unknown, names: Array) {\n this.uniformNames = names.map(name => `u_${name}`);\n this.patternFrom = null;\n this.patternTo = null;\n this.pixelRatioFrom = 1.0;\n this.pixelRatioTo = 1.0;\n }\n\n setConstantPatternPositions(posTo: ImagePosition, posFrom: ImagePosition) {\n this.pixelRatioFrom = posFrom.pixelRatio;\n this.pixelRatioTo = posTo.pixelRatio;\n this.patternFrom = posFrom.tlbr;\n this.patternTo = posTo.tlbr;\n }\n\n setUniform(uniform: Uniform, globals: GlobalProperties, currentValue: PossiblyEvaluatedPropertyValue, uniformName: string) {\n const pos =\n uniformName === 'u_pattern_to' ? this.patternTo :\n uniformName === 'u_pattern_from' ? this.patternFrom :\n uniformName === 'u_pixel_ratio_to' ? this.pixelRatioTo :\n uniformName === 'u_pixel_ratio_from' ? this.pixelRatioFrom : null;\n if (pos) uniform.set(pos);\n }\n\n getBinding(context: Context, location: WebGLUniformLocation, name: string): Partial> {\n return name.substr(0, 9) === 'u_pattern' ?\n new Uniform4f(context, location) :\n new Uniform1f(context, location);\n }\n}\n\nclass SourceExpressionBinder implements AttributeBinder {\n expression: SourceExpression;\n type: string;\n maxValue: number;\n\n paintVertexArray: StructArray;\n paintVertexAttributes: Array;\n paintVertexBuffer: VertexBuffer;\n\n constructor(expression: SourceExpression, names: Array, type: string, PaintVertexArray: {\n new (...args: any): StructArray;\n }) {\n this.expression = expression;\n this.type = type;\n this.maxValue = 0;\n this.paintVertexAttributes = names.map((name) => ({\n name: `a_${name}`,\n type: 'Float32',\n components: type === 'color' ? 2 : 1,\n offset: 0\n }));\n this.paintVertexArray = new PaintVertexArray();\n }\n\n populatePaintArray(newLength: number, feature: Feature, imagePositions: {[_: string]: ImagePosition}, canonical?: CanonicalTileID, formattedSection?: FormattedSection) {\n const start = this.paintVertexArray.length;\n const value = this.expression.evaluate(new EvaluationParameters(0), feature, {}, canonical, [], formattedSection);\n this.paintVertexArray.resize(newLength);\n this._setPaintValue(start, newLength, value);\n }\n\n updatePaintArray(start: number, end: number, feature: Feature, featureState: FeatureState) {\n const value = this.expression.evaluate({zoom: 0}, feature, featureState);\n this._setPaintValue(start, end, value);\n }\n\n _setPaintValue(start, end, value) {\n if (this.type === 'color') {\n const color = packColor(value);\n for (let i = start; i < end; i++) {\n this.paintVertexArray.emplace(i, color[0], color[1]);\n }\n } else {\n for (let i = start; i < end; i++) {\n this.paintVertexArray.emplace(i, value);\n }\n this.maxValue = Math.max(this.maxValue, Math.abs(value));\n }\n }\n\n upload(context: Context) {\n if (this.paintVertexArray && this.paintVertexArray.arrayBuffer) {\n if (this.paintVertexBuffer && this.paintVertexBuffer.buffer) {\n this.paintVertexBuffer.updateData(this.paintVertexArray);\n } else {\n this.paintVertexBuffer = context.createVertexBuffer(this.paintVertexArray, this.paintVertexAttributes, this.expression.isStateDependent);\n }\n }\n }\n\n destroy() {\n if (this.paintVertexBuffer) {\n this.paintVertexBuffer.destroy();\n }\n }\n}\n\nclass CompositeExpressionBinder implements AttributeBinder, UniformBinder {\n expression: CompositeExpression;\n uniformNames: Array;\n type: string;\n useIntegerZoom: boolean;\n zoom: number;\n maxValue: number;\n\n paintVertexArray: StructArray;\n paintVertexAttributes: Array;\n paintVertexBuffer: VertexBuffer;\n\n constructor(expression: CompositeExpression, names: Array, type: string, useIntegerZoom: boolean, zoom: number, PaintVertexArray: {\n new (...args: any): StructArray;\n }) {\n this.expression = expression;\n this.uniformNames = names.map(name => `u_${name}_t`);\n this.type = type;\n this.useIntegerZoom = useIntegerZoom;\n this.zoom = zoom;\n this.maxValue = 0;\n this.paintVertexAttributes = names.map((name) => ({\n name: `a_${name}`,\n type: 'Float32',\n components: type === 'color' ? 4 : 2,\n offset: 0\n }));\n this.paintVertexArray = new PaintVertexArray();\n }\n\n populatePaintArray(newLength: number, feature: Feature, imagePositions: {[_: string]: ImagePosition}, canonical?: CanonicalTileID, formattedSection?: FormattedSection) {\n const min = this.expression.evaluate(new EvaluationParameters(this.zoom), feature, {}, canonical, [], formattedSection);\n const max = this.expression.evaluate(new EvaluationParameters(this.zoom + 1), feature, {}, canonical, [], formattedSection);\n const start = this.paintVertexArray.length;\n this.paintVertexArray.resize(newLength);\n this._setPaintValue(start, newLength, min, max);\n }\n\n updatePaintArray(start: number, end: number, feature: Feature, featureState: FeatureState) {\n const min = this.expression.evaluate({zoom: this.zoom}, feature, featureState);\n const max = this.expression.evaluate({zoom: this.zoom + 1}, feature, featureState);\n this._setPaintValue(start, end, min, max);\n }\n\n _setPaintValue(start, end, min, max) {\n if (this.type === 'color') {\n const minColor = packColor(min);\n const maxColor = packColor(max);\n for (let i = start; i < end; i++) {\n this.paintVertexArray.emplace(i, minColor[0], minColor[1], maxColor[0], maxColor[1]);\n }\n } else {\n for (let i = start; i < end; i++) {\n this.paintVertexArray.emplace(i, min, max);\n }\n this.maxValue = Math.max(this.maxValue, Math.abs(min), Math.abs(max));\n }\n }\n\n upload(context: Context) {\n if (this.paintVertexArray && this.paintVertexArray.arrayBuffer) {\n if (this.paintVertexBuffer && this.paintVertexBuffer.buffer) {\n this.paintVertexBuffer.updateData(this.paintVertexArray);\n } else {\n this.paintVertexBuffer = context.createVertexBuffer(this.paintVertexArray, this.paintVertexAttributes, this.expression.isStateDependent);\n }\n }\n }\n\n destroy() {\n if (this.paintVertexBuffer) {\n this.paintVertexBuffer.destroy();\n }\n }\n\n setUniform(uniform: Uniform, globals: GlobalProperties): void {\n const currentZoom = this.useIntegerZoom ? Math.floor(globals.zoom) : globals.zoom;\n const factor = clamp(this.expression.interpolationFactor(currentZoom, this.zoom, this.zoom + 1), 0, 1);\n uniform.set(factor);\n }\n\n getBinding(context: Context, location: WebGLUniformLocation, _: string): Uniform1f {\n return new Uniform1f(context, location);\n }\n}\n\nclass CrossFadedCompositeBinder implements AttributeBinder {\n expression: CompositeExpression;\n type: string;\n useIntegerZoom: boolean;\n zoom: number;\n layerId: string;\n\n zoomInPaintVertexArray: StructArray;\n zoomOutPaintVertexArray: StructArray;\n zoomInPaintVertexBuffer: VertexBuffer;\n zoomOutPaintVertexBuffer: VertexBuffer;\n paintVertexAttributes: Array;\n\n constructor(expression: CompositeExpression, type: string, useIntegerZoom: boolean, zoom: number, PaintVertexArray: {\n new (...args: any): StructArray;\n }, layerId: string) {\n this.expression = expression;\n this.type = type;\n this.useIntegerZoom = useIntegerZoom;\n this.zoom = zoom;\n this.layerId = layerId;\n\n this.zoomInPaintVertexArray = new PaintVertexArray();\n this.zoomOutPaintVertexArray = new PaintVertexArray();\n }\n\n populatePaintArray(length: number, feature: Feature, imagePositions: {[_: string]: ImagePosition}) {\n const start = this.zoomInPaintVertexArray.length;\n this.zoomInPaintVertexArray.resize(length);\n this.zoomOutPaintVertexArray.resize(length);\n this._setPaintValues(start, length, feature.patterns && feature.patterns[this.layerId], imagePositions);\n }\n\n updatePaintArray(start: number, end: number, feature: Feature, featureState: FeatureState, imagePositions: {[_: string]: ImagePosition}) {\n this._setPaintValues(start, end, feature.patterns && feature.patterns[this.layerId], imagePositions);\n }\n\n _setPaintValues(start, end, patterns, positions) {\n if (!positions || !patterns) return;\n\n const {min, mid, max} = patterns;\n const imageMin = positions[min];\n const imageMid = positions[mid];\n const imageMax = positions[max];\n if (!imageMin || !imageMid || !imageMax) return;\n\n // We populate two paint arrays because, for cross-faded properties, we don't know which direction\n // we're cross-fading to at layout time. In order to keep vertex attributes to a minimum and not pass\n // unnecessary vertex data to the shaders, we determine which to upload at draw time.\n for (let i = start; i < end; i++) {\n this.zoomInPaintVertexArray.emplace(i,\n imageMid.tl[0], imageMid.tl[1], imageMid.br[0], imageMid.br[1],\n imageMin.tl[0], imageMin.tl[1], imageMin.br[0], imageMin.br[1],\n imageMid.pixelRatio,\n imageMin.pixelRatio,\n );\n this.zoomOutPaintVertexArray.emplace(i,\n imageMid.tl[0], imageMid.tl[1], imageMid.br[0], imageMid.br[1],\n imageMax.tl[0], imageMax.tl[1], imageMax.br[0], imageMax.br[1],\n imageMid.pixelRatio,\n imageMax.pixelRatio,\n );\n }\n }\n\n upload(context: Context) {\n if (this.zoomInPaintVertexArray && this.zoomInPaintVertexArray.arrayBuffer && this.zoomOutPaintVertexArray && this.zoomOutPaintVertexArray.arrayBuffer) {\n this.zoomInPaintVertexBuffer = context.createVertexBuffer(this.zoomInPaintVertexArray, patternAttributes.members, this.expression.isStateDependent);\n this.zoomOutPaintVertexBuffer = context.createVertexBuffer(this.zoomOutPaintVertexArray, patternAttributes.members, this.expression.isStateDependent);\n }\n }\n\n destroy() {\n if (this.zoomOutPaintVertexBuffer) this.zoomOutPaintVertexBuffer.destroy();\n if (this.zoomInPaintVertexBuffer) this.zoomInPaintVertexBuffer.destroy();\n }\n}\n\n/**\n * @internal\n * ProgramConfiguration contains the logic for binding style layer properties and tile\n * layer feature data into GL program uniforms and vertex attributes.\n *\n * Non-data-driven property values are bound to shader uniforms. Data-driven property\n * values are bound to vertex attributes. In order to support a uniform GLSL syntax over\n * both, [Mapbox GL Shaders](https://github.com/mapbox/mapbox-gl-shaders) defines a `#pragma`\n * abstraction, which ProgramConfiguration is responsible for implementing. At runtime,\n * it examines the attributes of a particular layer, combines this with fixed knowledge\n * about how layers of the particular type are implemented, and determines which uniforms\n * and vertex attributes will be required. It can then substitute the appropriate text\n * into the shader source code, create and link a program, and bind the uniforms and\n * vertex attributes in preparation for drawing.\n *\n * When a vector tile is parsed, this same configuration information is used to\n * populate the attribute buffers needed for data-driven styling using the zoom\n * level and feature property data.\n */\nexport class ProgramConfiguration {\n binders: {[_: string]: AttributeBinder | UniformBinder};\n cacheKey: string;\n\n _buffers: Array;\n\n constructor(layer: TypedStyleLayer, zoom: number, filterProperties: (_: string) => boolean) {\n this.binders = {};\n this._buffers = [];\n\n const keys = [];\n\n for (const property in layer.paint._values) {\n if (!filterProperties(property)) continue;\n const value = (layer.paint as any).get(property);\n if (!(value instanceof PossiblyEvaluatedPropertyValue) || !supportsPropertyExpression(value.property.specification)) {\n continue;\n }\n const names = paintAttributeNames(property, layer.type);\n const expression = value.value;\n const type = value.property.specification.type;\n const useIntegerZoom = (value.property as any).useIntegerZoom;\n const propType = value.property.specification['property-type'];\n const isCrossFaded = propType === 'cross-faded' || propType === 'cross-faded-data-driven';\n\n if (expression.kind === 'constant') {\n this.binders[property] = isCrossFaded ?\n new CrossFadedConstantBinder(expression.value, names) :\n new ConstantBinder(expression.value, names, type);\n keys.push(`/u_${property}`);\n\n } else if (expression.kind === 'source' || isCrossFaded) {\n const StructArrayLayout = layoutType(property, type, 'source');\n this.binders[property] = isCrossFaded ?\n new CrossFadedCompositeBinder(expression as CompositeExpression, type, useIntegerZoom, zoom, StructArrayLayout, layer.id) :\n new SourceExpressionBinder(expression as SourceExpression, names, type, StructArrayLayout);\n keys.push(`/a_${property}`);\n\n } else {\n const StructArrayLayout = layoutType(property, type, 'composite');\n this.binders[property] = new CompositeExpressionBinder(expression, names, type, useIntegerZoom, zoom, StructArrayLayout);\n keys.push(`/z_${property}`);\n }\n }\n\n this.cacheKey = keys.sort().join('');\n }\n\n getMaxValue(property: string): number {\n const binder = this.binders[property];\n return binder instanceof SourceExpressionBinder || binder instanceof CompositeExpressionBinder ? binder.maxValue : 0;\n }\n\n populatePaintArrays(newLength: number, feature: Feature, imagePositions: {[_: string]: ImagePosition}, canonical?: CanonicalTileID, formattedSection?: FormattedSection) {\n for (const property in this.binders) {\n const binder = this.binders[property];\n if (binder instanceof SourceExpressionBinder || binder instanceof CompositeExpressionBinder || binder instanceof CrossFadedCompositeBinder)\n (binder as AttributeBinder).populatePaintArray(newLength, feature, imagePositions, canonical, formattedSection);\n }\n }\n setConstantPatternPositions(posTo: ImagePosition, posFrom: ImagePosition) {\n for (const property in this.binders) {\n const binder = this.binders[property];\n if (binder instanceof CrossFadedConstantBinder)\n binder.setConstantPatternPositions(posTo, posFrom);\n }\n }\n\n updatePaintArrays(\n featureStates: FeatureStates,\n featureMap: FeaturePositionMap,\n vtLayer: VectorTileLayer,\n layer: TypedStyleLayer,\n imagePositions: {[_: string]: ImagePosition}\n ): boolean {\n let dirty: boolean = false;\n for (const id in featureStates) {\n const positions = featureMap.getPositions(id);\n\n for (const pos of positions) {\n const feature = vtLayer.feature(pos.index);\n\n for (const property in this.binders) {\n const binder = this.binders[property];\n if ((binder instanceof SourceExpressionBinder || binder instanceof CompositeExpressionBinder ||\n binder instanceof CrossFadedCompositeBinder) && (binder as any).expression.isStateDependent === true) {\n //AHM: Remove after https://github.com/mapbox/mapbox-gl-js/issues/6255\n const value = (layer.paint as any).get(property);\n (binder as any).expression = value.value;\n (binder as AttributeBinder).updatePaintArray(pos.start, pos.end, feature, featureStates[id], imagePositions);\n dirty = true;\n }\n }\n }\n }\n return dirty;\n }\n\n defines(): Array {\n const result = [];\n for (const property in this.binders) {\n const binder = this.binders[property];\n if (binder instanceof ConstantBinder || binder instanceof CrossFadedConstantBinder) {\n result.push(...binder.uniformNames.map(name => `#define HAS_UNIFORM_${name}`));\n }\n }\n return result;\n }\n\n getBinderAttributes(): Array {\n const result = [];\n for (const property in this.binders) {\n const binder = this.binders[property];\n if (binder instanceof SourceExpressionBinder || binder instanceof CompositeExpressionBinder) {\n for (let i = 0; i < binder.paintVertexAttributes.length; i++) {\n result.push(binder.paintVertexAttributes[i].name);\n }\n } else if (binder instanceof CrossFadedCompositeBinder) {\n for (let i = 0; i < patternAttributes.members.length; i++) {\n result.push(patternAttributes.members[i].name);\n }\n }\n }\n return result;\n }\n\n getBinderUniforms(): Array {\n const uniforms = [];\n for (const property in this.binders) {\n const binder = this.binders[property];\n if (binder instanceof ConstantBinder || binder instanceof CrossFadedConstantBinder || binder instanceof CompositeExpressionBinder) {\n for (const uniformName of binder.uniformNames) {\n uniforms.push(uniformName);\n }\n }\n }\n return uniforms;\n }\n\n getPaintVertexBuffers(): Array {\n return this._buffers;\n }\n\n getUniforms(context: Context, locations: UniformLocations): Array {\n const uniforms = [];\n for (const property in this.binders) {\n const binder = this.binders[property];\n if (binder instanceof ConstantBinder || binder instanceof CrossFadedConstantBinder || binder instanceof CompositeExpressionBinder) {\n for (const name of binder.uniformNames) {\n if (locations[name]) {\n const binding = binder.getBinding(context, locations[name], name);\n uniforms.push({name, property, binding});\n }\n }\n }\n }\n return uniforms;\n }\n\n setUniforms(\n context: Context,\n binderUniforms: Array,\n properties: any,\n globals: GlobalProperties\n ) {\n // Uniform state bindings are owned by the Program, but we set them\n // from within the ProgramConfiguration's binder members.\n for (const {name, property, binding} of binderUniforms) {\n (this.binders[property] as any).setUniform(binding, globals, properties.get(property), name);\n }\n }\n\n updatePaintBuffers(crossfade?: CrossfadeParameters) {\n this._buffers = [];\n\n for (const property in this.binders) {\n const binder = this.binders[property];\n if (crossfade && binder instanceof CrossFadedCompositeBinder) {\n const patternVertexBuffer = crossfade.fromScale === 2 ? binder.zoomInPaintVertexBuffer : binder.zoomOutPaintVertexBuffer;\n if (patternVertexBuffer) this._buffers.push(patternVertexBuffer);\n\n } else if ((binder instanceof SourceExpressionBinder || binder instanceof CompositeExpressionBinder) && binder.paintVertexBuffer) {\n this._buffers.push(binder.paintVertexBuffer);\n }\n }\n }\n\n upload(context: Context) {\n for (const property in this.binders) {\n const binder = this.binders[property];\n if (binder instanceof SourceExpressionBinder || binder instanceof CompositeExpressionBinder || binder instanceof CrossFadedCompositeBinder)\n binder.upload(context);\n }\n this.updatePaintBuffers();\n }\n\n destroy() {\n for (const property in this.binders) {\n const binder = this.binders[property];\n if (binder instanceof SourceExpressionBinder || binder instanceof CompositeExpressionBinder || binder instanceof CrossFadedCompositeBinder)\n binder.destroy();\n }\n }\n}\n\nexport class ProgramConfigurationSet {\n programConfigurations: {[_: string]: ProgramConfiguration};\n needsUpload: boolean;\n _featureMap: FeaturePositionMap;\n _bufferOffset: number;\n\n constructor(layers: ReadonlyArray, zoom: number, filterProperties: (_: string) => boolean = () => true) {\n this.programConfigurations = {};\n for (const layer of layers) {\n this.programConfigurations[layer.id] = new ProgramConfiguration(layer, zoom, filterProperties);\n }\n this.needsUpload = false;\n this._featureMap = new FeaturePositionMap();\n this._bufferOffset = 0;\n }\n\n populatePaintArrays(length: number, feature: Feature, index: number, imagePositions: {[_: string]: ImagePosition}, canonical: CanonicalTileID, formattedSection?: FormattedSection) {\n for (const key in this.programConfigurations) {\n this.programConfigurations[key].populatePaintArrays(length, feature, imagePositions, canonical, formattedSection);\n }\n\n if (feature.id !== undefined) {\n this._featureMap.add(feature.id, index, this._bufferOffset, length);\n }\n this._bufferOffset = length;\n\n this.needsUpload = true;\n }\n\n updatePaintArrays(featureStates: FeatureStates, vtLayer: VectorTileLayer, layers: ReadonlyArray, imagePositions: {[_: string]: ImagePosition}) {\n for (const layer of layers) {\n this.needsUpload = this.programConfigurations[layer.id].updatePaintArrays(featureStates, this._featureMap, vtLayer, layer, imagePositions) || this.needsUpload;\n }\n }\n\n get(layerId: string) {\n return this.programConfigurations[layerId];\n }\n\n upload(context: Context) {\n if (!this.needsUpload) return;\n for (const layerId in this.programConfigurations) {\n this.programConfigurations[layerId].upload(context);\n }\n this.needsUpload = false;\n }\n\n destroy() {\n for (const layerId in this.programConfigurations) {\n this.programConfigurations[layerId].destroy();\n }\n }\n}\n\nfunction paintAttributeNames(property, type) {\n const attributeNameExceptions = {\n 'text-opacity': ['opacity'],\n 'icon-opacity': ['opacity'],\n 'text-color': ['fill_color'],\n 'icon-color': ['fill_color'],\n 'text-halo-color': ['halo_color'],\n 'icon-halo-color': ['halo_color'],\n 'text-halo-blur': ['halo_blur'],\n 'icon-halo-blur': ['halo_blur'],\n 'text-halo-width': ['halo_width'],\n 'icon-halo-width': ['halo_width'],\n 'line-gap-width': ['gapwidth'],\n 'line-pattern': ['pattern_to', 'pattern_from', 'pixel_ratio_to', 'pixel_ratio_from'],\n 'fill-pattern': ['pattern_to', 'pattern_from', 'pixel_ratio_to', 'pixel_ratio_from'],\n 'fill-extrusion-pattern': ['pattern_to', 'pattern_from', 'pixel_ratio_to', 'pixel_ratio_from'],\n };\n\n return attributeNameExceptions[property] || [property.replace(`${type}-`, '').replace(/-/g, '_')];\n}\n\nfunction getLayoutException(property) {\n const propertyExceptions = {\n 'line-pattern': {\n 'source': PatternLayoutArray,\n 'composite': PatternLayoutArray\n },\n 'fill-pattern': {\n 'source': PatternLayoutArray,\n 'composite': PatternLayoutArray\n },\n 'fill-extrusion-pattern': {\n 'source': PatternLayoutArray,\n 'composite': PatternLayoutArray\n }\n };\n\n return propertyExceptions[property];\n}\n\nfunction layoutType(property, type, binderType) {\n const defaultLayouts = {\n 'color': {\n 'source': StructArrayLayout2f8,\n 'composite': StructArrayLayout4f16\n },\n 'number': {\n 'source': StructArrayLayout1f4,\n 'composite': StructArrayLayout2f8\n }\n };\n\n const layoutException = getLayoutException(property);\n return layoutException && layoutException[binderType] || defaultLayouts[type][binderType];\n}\n\nregister('ConstantBinder', ConstantBinder);\nregister('CrossFadedConstantBinder', CrossFadedConstantBinder);\nregister('SourceExpressionBinder', SourceExpressionBinder);\nregister('CrossFadedCompositeBinder', CrossFadedCompositeBinder);\nregister('CompositeExpressionBinder', CompositeExpressionBinder);\nregister('ProgramConfiguration', ProgramConfiguration, {omit: ['_buffers']});\nregister('ProgramConfigurationSet', ProgramConfigurationSet);\n","import {warnOnce, clamp} from '../util/util';\n\nimport {EXTENT} from './extent';\n\nimport type Point from '@mapbox/point-geometry';\nimport type {VectorTileFeature} from '@mapbox/vector-tile';\n\n// These bounds define the minimum and maximum supported coordinate values.\n// While visible coordinates are within [0, EXTENT], tiles may theoretically\n// contain coordinates within [-Infinity, Infinity]. Our range is limited by the\n// number of bits used to represent the coordinate.\nconst BITS = 15;\nconst MAX = Math.pow(2, BITS - 1) - 1;\nconst MIN = -MAX - 1;\n\n/**\n * Loads a geometry from a VectorTileFeature and scales it to the common extent\n * used internally.\n * @param feature - the vector tile feature to load\n */\nexport function loadGeometry(feature: VectorTileFeature): Array> {\n const scale = EXTENT / feature.extent;\n const geometry = feature.loadGeometry();\n for (let r = 0; r < geometry.length; r++) {\n const ring = geometry[r];\n for (let p = 0; p < ring.length; p++) {\n const point = ring[p];\n // round here because mapbox-gl-native uses integers to represent\n // points and we need to do the same to avoid rendering differences.\n const x = Math.round(point.x * scale);\n const y = Math.round(point.y * scale);\n\n point.x = clamp(x, MIN, MAX);\n point.y = clamp(y, MIN, MAX);\n\n if (x < point.x || x > point.x + 1 || y < point.y || y > point.y + 1) {\n // warn when exceeding allowed extent except for the 1-px-off case\n // https://github.com/mapbox/mapbox-gl-js/issues/8992\n warnOnce('Geometry exceeds allowed extent, reduce your vector tile buffer size');\n }\n }\n }\n return geometry;\n}\n","import {loadGeometry} from './load_geometry';\nimport type Point from '@mapbox/point-geometry';\nimport type {VectorTileFeature} from '@mapbox/vector-tile';\nimport type {Feature} from '@maplibre/maplibre-gl-style-spec';\n\ntype EvaluationFeature = Feature & { geometry: Array> };\n/**\n * Construct a new feature based on a VectorTileFeature for expression evaluation, the geometry of which\n * will be loaded based on necessity.\n * @param feature - the feature to evaluate\n * @param needGeometry - if set to true this will load the geometry\n */\nexport function toEvaluationFeature(feature: VectorTileFeature, needGeometry: boolean): EvaluationFeature {\n return {type: feature.type,\n id: feature.id,\n properties: feature.properties,\n geometry: needGeometry ? loadGeometry(feature) : []};\n}\n","import {CircleLayoutArray} from '../array_types.g';\n\nimport {members as layoutAttributes} from './circle_attributes';\nimport {SegmentVector} from '../segment';\nimport {ProgramConfigurationSet} from '../program_configuration';\nimport {TriangleIndexArray} from '../index_array_type';\nimport {loadGeometry} from '../load_geometry';\nimport {toEvaluationFeature} from '../evaluation_feature';\nimport {EXTENT} from '../extent';\nimport {register} from '../../util/web_worker_transfer';\nimport {EvaluationParameters} from '../../style/evaluation_parameters';\n\nimport type {CanonicalTileID} from '../../source/tile_id';\nimport type {\n Bucket,\n BucketParameters,\n BucketFeature,\n IndexedFeature,\n PopulateParameters\n} from '../bucket';\nimport type {CircleStyleLayer} from '../../style/style_layer/circle_style_layer';\nimport type {HeatmapStyleLayer} from '../../style/style_layer/heatmap_style_layer';\nimport type {Context} from '../../gl/context';\nimport type {IndexBuffer} from '../../gl/index_buffer';\nimport type {VertexBuffer} from '../../gl/vertex_buffer';\nimport type Point from '@mapbox/point-geometry';\nimport type {FeatureStates} from '../../source/source_state';\nimport type {ImagePosition} from '../../render/image_atlas';\nimport type {VectorTileLayer} from '@mapbox/vector-tile';\nimport {type CircleGranularity} from '../../render/subdivision_granularity_settings';\n\nconst VERTEX_MIN_VALUE = -32768; // -(2^15)\n\n// Extrude is in range 0..7, which will be mapped to -1..1 in the shader.\nfunction addCircleVertex(layoutVertexArray, x, y, extrudeX, extrudeY) {\n // We pack circle position and extrude into range 0..65535, but vertices are stored as *signed* 16-bit integers, so we need to offset the number by 2^15.\n layoutVertexArray.emplaceBack(\n VERTEX_MIN_VALUE + (x * 8) + extrudeX,\n VERTEX_MIN_VALUE + (y * 8) + extrudeY);\n}\n\n/**\n * @internal\n * Circles are represented by two triangles.\n *\n * Each corner has a pos that is the center of the circle and an extrusion\n * vector that is where it points.\n */\nexport class CircleBucket implements Bucket {\n index: number;\n zoom: number;\n overscaling: number;\n layerIds: Array;\n layers: Array;\n stateDependentLayers: Array;\n stateDependentLayerIds: Array;\n\n layoutVertexArray: CircleLayoutArray;\n layoutVertexBuffer: VertexBuffer;\n\n indexArray: TriangleIndexArray;\n indexBuffer: IndexBuffer;\n\n hasPattern: boolean;\n programConfigurations: ProgramConfigurationSet;\n segments: SegmentVector;\n uploaded: boolean;\n\n constructor(options: BucketParameters) {\n this.zoom = options.zoom;\n this.overscaling = options.overscaling;\n this.layers = options.layers;\n this.layerIds = this.layers.map(layer => layer.id);\n this.index = options.index;\n this.hasPattern = false;\n\n this.layoutVertexArray = new CircleLayoutArray();\n this.indexArray = new TriangleIndexArray();\n this.segments = new SegmentVector();\n this.programConfigurations = new ProgramConfigurationSet(options.layers, options.zoom);\n this.stateDependentLayerIds = this.layers.filter((l) => l.isStateDependent()).map((l) => l.id);\n }\n\n populate(features: Array, options: PopulateParameters, canonical: CanonicalTileID) {\n const styleLayer = this.layers[0];\n const bucketFeatures: BucketFeature[] = [];\n let circleSortKey = null;\n let sortFeaturesByKey = false;\n\n // Heatmap circles are usually large (and map-pitch-aligned), tessellate them to allow curvature along the globe.\n let subdivide = styleLayer.type === 'heatmap';\n\n // Heatmap layers are handled in this bucket and have no evaluated properties, so we check our access\n if (styleLayer.type === 'circle') {\n const circleStyle = (styleLayer as CircleStyleLayer);\n circleSortKey = circleStyle.layout.get('circle-sort-key');\n sortFeaturesByKey = !circleSortKey.isConstant();\n\n // Circles that are \"printed\" onto the map surface should be tessellated to follow the globe's curvature.\n subdivide = subdivide || circleStyle.paint.get('circle-pitch-alignment') === 'map';\n }\n\n const granularity = subdivide ? options.subdivisionGranularity.circle : 1;\n\n for (const {feature, id, index, sourceLayerIndex} of features) {\n const needGeometry = this.layers[0]._featureFilter.needGeometry;\n const evaluationFeature = toEvaluationFeature(feature, needGeometry);\n\n if (!this.layers[0]._featureFilter.filter(new EvaluationParameters(this.zoom), evaluationFeature, canonical)) continue;\n\n const sortKey = sortFeaturesByKey ?\n circleSortKey.evaluate(evaluationFeature, {}, canonical) :\n undefined;\n\n const bucketFeature: BucketFeature = {\n id,\n properties: feature.properties,\n type: feature.type,\n sourceLayerIndex,\n index,\n geometry: needGeometry ? evaluationFeature.geometry : loadGeometry(feature),\n patterns: {},\n sortKey\n };\n\n bucketFeatures.push(bucketFeature);\n\n }\n\n if (sortFeaturesByKey) {\n bucketFeatures.sort((a, b) => a.sortKey - b.sortKey);\n }\n\n for (const bucketFeature of bucketFeatures) {\n const {geometry, index, sourceLayerIndex} = bucketFeature;\n const feature = features[index].feature;\n\n this.addFeature(bucketFeature, geometry, index, canonical, granularity);\n options.featureIndex.insert(feature, geometry, index, sourceLayerIndex, this.index);\n }\n }\n\n update(states: FeatureStates, vtLayer: VectorTileLayer, imagePositions: {[_: string]: ImagePosition}) {\n if (!this.stateDependentLayers.length) return;\n this.programConfigurations.updatePaintArrays(states, vtLayer, this.stateDependentLayers, imagePositions);\n }\n\n isEmpty() {\n return this.layoutVertexArray.length === 0;\n }\n\n uploadPending() {\n return !this.uploaded || this.programConfigurations.needsUpload;\n }\n\n upload(context: Context) {\n if (!this.uploaded) {\n this.layoutVertexBuffer = context.createVertexBuffer(this.layoutVertexArray, layoutAttributes);\n this.indexBuffer = context.createIndexBuffer(this.indexArray);\n }\n this.programConfigurations.upload(context);\n this.uploaded = true;\n }\n\n destroy() {\n if (!this.layoutVertexBuffer) return;\n this.layoutVertexBuffer.destroy();\n this.indexBuffer.destroy();\n this.programConfigurations.destroy();\n this.segments.destroy();\n }\n\n addFeature(feature: BucketFeature, geometry: Array>, index: number, canonical: CanonicalTileID, granularity: CircleGranularity = 1) {\n // Since we store the circle's center in each vertex, we only have 3 bits for actual vertex position in each axis.\n // Thus the valid range of positions is 0..7.\n // This gives us 4 possible granularity settings that are symmetrical.\n\n // This array stores vertex positions that should by used by the tessellated quad.\n let extrudes: Array;\n\n switch (granularity) {\n case 1:\n extrudes = [0, 7];\n break;\n case 3:\n extrudes = [0, 2, 5, 7];\n break;\n case 5:\n extrudes = [0, 1, 3, 4, 6, 7];\n break;\n case 7:\n extrudes = [0, 1, 2, 3, 4, 5, 6, 7];\n break;\n default:\n throw new Error(`Invalid circle bucket granularity: ${granularity}; valid values are 1, 3, 5, 7.`);\n }\n\n const verticesPerAxis = extrudes.length;\n\n for (const ring of geometry) {\n for (const point of ring) {\n const vx = point.x;\n const vy = point.y;\n\n // Do not include points that are outside the tile boundaries.\n if (vx < 0 || vx >= EXTENT || vy < 0 || vy >= EXTENT) {\n continue;\n }\n\n const segment = this.segments.prepareSegment(verticesPerAxis * verticesPerAxis, this.layoutVertexArray, this.indexArray, feature.sortKey);\n const index = segment.vertexLength;\n\n for (let y = 0; y < verticesPerAxis; y++) {\n for (let x = 0; x < verticesPerAxis; x++) {\n addCircleVertex(this.layoutVertexArray, vx, vy, extrudes[x], extrudes[y]);\n }\n }\n\n for (let y = 0; y < verticesPerAxis - 1; y++) {\n for (let x = 0; x < verticesPerAxis - 1; x++) {\n const lowerIndex = index + y * verticesPerAxis + x;\n const upperIndex = index + (y + 1) * verticesPerAxis + x;\n this.indexArray.emplaceBack(lowerIndex, upperIndex + 1, lowerIndex + 1);\n this.indexArray.emplaceBack(lowerIndex, upperIndex, upperIndex + 1);\n }\n }\n\n segment.vertexLength += verticesPerAxis * verticesPerAxis;\n segment.primitiveLength += (verticesPerAxis - 1) * (verticesPerAxis - 1) * 2;\n }\n }\n\n this.programConfigurations.populatePaintArrays(this.layoutVertexArray.length, feature, index, {}, canonical);\n }\n}\n\nregister('CircleBucket', CircleBucket, {omit: ['layers']});\n","import {isCounterClockwise} from './util';\n\nimport Point from '@mapbox/point-geometry';\n\nexport {polygonIntersectsBufferedPoint, polygonIntersectsMultiPolygon, polygonIntersectsBufferedMultiLine, polygonIntersectsPolygon, distToSegmentSquared, polygonIntersectsBox};\n\ntype Line = Array;\ntype MultiLine = Array;\ntype Ring = Array;\ntype Polygon = Array;\ntype MultiPolygon = Array;\n\nfunction polygonIntersectsPolygon(polygonA: Polygon, polygonB: Polygon) {\n for (let i = 0; i < polygonA.length; i++) {\n if (polygonContainsPoint(polygonB, polygonA[i])) return true;\n }\n\n for (let i = 0; i < polygonB.length; i++) {\n if (polygonContainsPoint(polygonA, polygonB[i])) return true;\n }\n\n if (lineIntersectsLine(polygonA, polygonB)) return true;\n\n return false;\n}\n\nfunction polygonIntersectsBufferedPoint(polygon: Polygon, point: Point, radius: number) {\n if (polygonContainsPoint(polygon, point)) return true;\n if (pointIntersectsBufferedLine(point, polygon, radius)) return true;\n return false;\n}\n\nfunction polygonIntersectsMultiPolygon(polygon: Polygon, multiPolygon: MultiPolygon) {\n\n if (polygon.length === 1) {\n return multiPolygonContainsPoint(multiPolygon, polygon[0]);\n }\n\n for (let m = 0; m < multiPolygon.length; m++) {\n const ring = multiPolygon[m];\n for (let n = 0; n < ring.length; n++) {\n if (polygonContainsPoint(polygon, ring[n])) return true;\n }\n }\n\n for (let i = 0; i < polygon.length; i++) {\n if (multiPolygonContainsPoint(multiPolygon, polygon[i])) return true;\n }\n\n for (let k = 0; k < multiPolygon.length; k++) {\n if (lineIntersectsLine(polygon, multiPolygon[k])) return true;\n }\n\n return false;\n}\n\nfunction polygonIntersectsBufferedMultiLine(polygon: Polygon, multiLine: MultiLine, radius: number) {\n for (let i = 0; i < multiLine.length; i++) {\n const line = multiLine[i];\n\n if (polygon.length >= 3) {\n for (let k = 0; k < line.length; k++) {\n if (polygonContainsPoint(polygon, line[k])) return true;\n }\n }\n\n if (lineIntersectsBufferedLine(polygon, line, radius)) return true;\n }\n return false;\n}\n\nfunction lineIntersectsBufferedLine(lineA: Line, lineB: Line, radius: number) {\n\n if (lineA.length > 1) {\n if (lineIntersectsLine(lineA, lineB)) return true;\n\n // Check whether any point in either line is within radius of the other line\n for (let j = 0; j < lineB.length; j++) {\n if (pointIntersectsBufferedLine(lineB[j], lineA, radius)) return true;\n }\n }\n\n for (let k = 0; k < lineA.length; k++) {\n if (pointIntersectsBufferedLine(lineA[k], lineB, radius)) return true;\n }\n\n return false;\n}\n\nfunction lineIntersectsLine(lineA: Line, lineB: Line) {\n if (lineA.length === 0 || lineB.length === 0) return false;\n for (let i = 0; i < lineA.length - 1; i++) {\n const a0 = lineA[i];\n const a1 = lineA[i + 1];\n for (let j = 0; j < lineB.length - 1; j++) {\n const b0 = lineB[j];\n const b1 = lineB[j + 1];\n if (lineSegmentIntersectsLineSegment(a0, a1, b0, b1)) return true;\n }\n }\n return false;\n}\n\nfunction lineSegmentIntersectsLineSegment(a0: Point, a1: Point, b0: Point, b1: Point) {\n return isCounterClockwise(a0, b0, b1) !== isCounterClockwise(a1, b0, b1) &&\n isCounterClockwise(a0, a1, b0) !== isCounterClockwise(a0, a1, b1);\n}\n\nfunction pointIntersectsBufferedLine(p: Point, line: Line, radius: number) {\n const radiusSquared = radius * radius;\n\n if (line.length === 1) return p.distSqr(line[0]) < radiusSquared;\n\n for (let i = 1; i < line.length; i++) {\n // Find line segments that have a distance <= radius^2 to p\n // In that case, we treat the line as \"containing point p\".\n const v = line[i - 1], w = line[i];\n if (distToSegmentSquared(p, v, w) < radiusSquared) return true;\n }\n return false;\n}\n\n// Code from https://stackoverflow.com/a/1501725/331379.\nfunction distToSegmentSquared(p: Point, v: Point, w: Point) {\n const l2 = v.distSqr(w);\n if (l2 === 0) return p.distSqr(v);\n const t = ((p.x - v.x) * (w.x - v.x) + (p.y - v.y) * (w.y - v.y)) / l2;\n if (t < 0) return p.distSqr(v);\n if (t > 1) return p.distSqr(w);\n return p.distSqr(w.sub(v)._mult(t)._add(v));\n}\n\n// point in polygon ray casting algorithm\nfunction multiPolygonContainsPoint(rings: Array, p: Point) {\n let c = false,\n ring, p1, p2;\n\n for (let k = 0; k < rings.length; k++) {\n ring = rings[k];\n for (let i = 0, j = ring.length - 1; i < ring.length; j = i++) {\n p1 = ring[i];\n p2 = ring[j];\n if (((p1.y > p.y) !== (p2.y > p.y)) && (p.x < (p2.x - p1.x) * (p.y - p1.y) / (p2.y - p1.y) + p1.x)) {\n c = !c;\n }\n }\n }\n return c;\n}\n\nfunction polygonContainsPoint(ring: Ring, p: Point) {\n let c = false;\n for (let i = 0, j = ring.length - 1; i < ring.length; j = i++) {\n const p1 = ring[i];\n const p2 = ring[j];\n if (((p1.y > p.y) !== (p2.y > p.y)) && (p.x < (p2.x - p1.x) * (p.y - p1.y) / (p2.y - p1.y) + p1.x)) {\n c = !c;\n }\n }\n return c;\n}\n\nfunction polygonIntersectsBox(ring: Ring, boxX1: number, boxY1: number, boxX2: number, boxY2: number) {\n for (const p of ring) {\n if (boxX1 <= p.x &&\n boxY1 <= p.y &&\n boxX2 >= p.x &&\n boxY2 >= p.y) return true;\n }\n\n const corners = [\n new Point(boxX1, boxY1),\n new Point(boxX1, boxY2),\n new Point(boxX2, boxY2),\n new Point(boxX2, boxY1)];\n\n if (ring.length > 2) {\n for (const corner of corners) {\n if (polygonContainsPoint(ring, corner)) return true;\n }\n }\n\n for (let i = 0; i < ring.length - 1; i++) {\n const p1 = ring[i];\n const p2 = ring[i + 1];\n if (edgeIntersectsBox(p1, p2, corners)) return true;\n }\n\n return false;\n}\n\nfunction edgeIntersectsBox(e1: Point, e2: Point, corners: Array) {\n const tl = corners[0];\n const br = corners[2];\n // the edge and box do not intersect in either the x or y dimensions\n if (((e1.x < tl.x) && (e2.x < tl.x)) ||\n ((e1.x > br.x) && (e2.x > br.x)) ||\n ((e1.y < tl.y) && (e2.y < tl.y)) ||\n ((e1.y > br.y) && (e2.y > br.y))) return false;\n\n // check if all corners of the box are on the same side of the edge\n const dir = isCounterClockwise(e1, e2, corners[0]);\n return dir !== isCounterClockwise(e1, e2, corners[1]) ||\n dir !== isCounterClockwise(e1, e2, corners[2]) ||\n dir !== isCounterClockwise(e1, e2, corners[3]);\n}\n","import Point from '@mapbox/point-geometry';\n\nimport type {PossiblyEvaluatedPropertyValue} from './properties';\nimport type {StyleLayer} from '../style/style_layer';\nimport type {CircleBucket} from '../data/bucket/circle_bucket';\nimport type {LineBucket} from '../data/bucket/line_bucket';\n\nexport function getMaximumPaintValue(\n property: string,\n layer: StyleLayer,\n bucket: CircleBucket | LineBucket\n): number {\n const value = ((layer.paint as any).get(property) as PossiblyEvaluatedPropertyValue).value;\n if (value.kind === 'constant') {\n return value.value;\n } else {\n return bucket.programConfigurations.get(layer.id).getMaxValue(property);\n }\n}\n\nexport function translateDistance(translate: [number, number]) {\n return Math.sqrt(translate[0] * translate[0] + translate[1] * translate[1]);\n}\n\nexport function translate(queryGeometry: Array,\n translate: [number, number],\n translateAnchor: 'viewport' | 'map',\n bearing: number,\n pixelsToTileUnits: number) {\n if (!translate[0] && !translate[1]) {\n return queryGeometry;\n }\n const pt = Point.convert(translate)._mult(pixelsToTileUnits);\n\n if (translateAnchor === 'viewport') {\n pt._rotate(-bearing);\n }\n\n const translated = [];\n for (let i = 0; i < queryGeometry.length; i++) {\n const point = queryGeometry[i];\n translated.push(point.sub(pt));\n }\n return translated;\n}\n\nexport function offsetLine(rings: Array>, offset: number) {\n const newRings: Array> = [];\n for (let ringIndex = 0; ringIndex < rings.length; ringIndex++) {\n const ring = rings[ringIndex];\n const newRing: Array = [];\n for (let index = 0; index < ring.length; index++) {\n const a = ring[index - 1];\n const b = ring[index];\n const c = ring[index + 1];\n const aToB = index === 0 ? new Point(0, 0) : b.sub(a)._unit()._perp();\n const bToC = index === ring.length - 1 ? new Point(0, 0) : c.sub(b)._unit()._perp();\n const extrude = aToB._add(bToC)._unit();\n\n const cosHalfAngle = extrude.x * bToC.x + extrude.y * bToC.y;\n if (cosHalfAngle !== 0) {\n extrude._mult(1 / cosHalfAngle);\n }\n\n newRing.push(extrude._mult(offset)._add(b));\n }\n newRings.push(newRing);\n }\n return newRings;\n}\n","// This file is generated. Edit build/generate-style-code.ts, then run 'npm run codegen'.\n/* eslint-disable */\n\nimport {latest as styleSpec} from '@maplibre/maplibre-gl-style-spec';\n\nimport {\n Properties,\n DataConstantProperty,\n DataDrivenProperty,\n CrossFadedDataDrivenProperty,\n CrossFadedProperty,\n ColorRampProperty,\n PossiblyEvaluatedPropertyValue,\n CrossFaded\n} from '../properties';\n\nimport type {Color, Formatted, Padding, ResolvedImage, VariableAnchorOffsetCollection} from '@maplibre/maplibre-gl-style-spec';\nimport {StylePropertySpecification} from '@maplibre/maplibre-gl-style-spec';\n\nexport type CircleLayoutProps = {\n \"circle-sort-key\": DataDrivenProperty,\n};\n\nexport type CircleLayoutPropsPossiblyEvaluated = {\n \"circle-sort-key\": PossiblyEvaluatedPropertyValue,\n};\n\nlet layout: Properties;\nconst getLayout = () => layout = layout || new Properties({\n \"circle-sort-key\": new DataDrivenProperty(styleSpec[\"layout_circle\"][\"circle-sort-key\"] as any as StylePropertySpecification),\n});\n\nexport type CirclePaintProps = {\n \"circle-radius\": DataDrivenProperty,\n \"circle-color\": DataDrivenProperty,\n \"circle-blur\": DataDrivenProperty,\n \"circle-opacity\": DataDrivenProperty,\n \"circle-translate\": DataConstantProperty<[number, number]>,\n \"circle-translate-anchor\": DataConstantProperty<\"map\" | \"viewport\">,\n \"circle-pitch-scale\": DataConstantProperty<\"map\" | \"viewport\">,\n \"circle-pitch-alignment\": DataConstantProperty<\"map\" | \"viewport\">,\n \"circle-stroke-width\": DataDrivenProperty,\n \"circle-stroke-color\": DataDrivenProperty,\n \"circle-stroke-opacity\": DataDrivenProperty,\n};\n\nexport type CirclePaintPropsPossiblyEvaluated = {\n \"circle-radius\": PossiblyEvaluatedPropertyValue,\n \"circle-color\": PossiblyEvaluatedPropertyValue,\n \"circle-blur\": PossiblyEvaluatedPropertyValue,\n \"circle-opacity\": PossiblyEvaluatedPropertyValue,\n \"circle-translate\": [number, number],\n \"circle-translate-anchor\": \"map\" | \"viewport\",\n \"circle-pitch-scale\": \"map\" | \"viewport\",\n \"circle-pitch-alignment\": \"map\" | \"viewport\",\n \"circle-stroke-width\": PossiblyEvaluatedPropertyValue,\n \"circle-stroke-color\": PossiblyEvaluatedPropertyValue,\n \"circle-stroke-opacity\": PossiblyEvaluatedPropertyValue,\n};\n\nlet paint: Properties;\nconst getPaint = () => paint = paint || new Properties({\n \"circle-radius\": new DataDrivenProperty(styleSpec[\"paint_circle\"][\"circle-radius\"] as any as StylePropertySpecification),\n \"circle-color\": new DataDrivenProperty(styleSpec[\"paint_circle\"][\"circle-color\"] as any as StylePropertySpecification),\n \"circle-blur\": new DataDrivenProperty(styleSpec[\"paint_circle\"][\"circle-blur\"] as any as StylePropertySpecification),\n \"circle-opacity\": new DataDrivenProperty(styleSpec[\"paint_circle\"][\"circle-opacity\"] as any as StylePropertySpecification),\n \"circle-translate\": new DataConstantProperty(styleSpec[\"paint_circle\"][\"circle-translate\"] as any as StylePropertySpecification),\n \"circle-translate-anchor\": new DataConstantProperty(styleSpec[\"paint_circle\"][\"circle-translate-anchor\"] as any as StylePropertySpecification),\n \"circle-pitch-scale\": new DataConstantProperty(styleSpec[\"paint_circle\"][\"circle-pitch-scale\"] as any as StylePropertySpecification),\n \"circle-pitch-alignment\": new DataConstantProperty(styleSpec[\"paint_circle\"][\"circle-pitch-alignment\"] as any as StylePropertySpecification),\n \"circle-stroke-width\": new DataDrivenProperty(styleSpec[\"paint_circle\"][\"circle-stroke-width\"] as any as StylePropertySpecification),\n \"circle-stroke-color\": new DataDrivenProperty(styleSpec[\"paint_circle\"][\"circle-stroke-color\"] as any as StylePropertySpecification),\n \"circle-stroke-opacity\": new DataDrivenProperty(styleSpec[\"paint_circle\"][\"circle-stroke-opacity\"] as any as StylePropertySpecification),\n});\n\nexport default ({ get paint() { return getPaint() }, get layout() { return getLayout() } });","import {StyleLayer} from '../style_layer';\n\nimport {CircleBucket} from '../../data/bucket/circle_bucket';\nimport {polygonIntersectsBufferedPoint} from '../../util/intersection_tests';\nimport {getMaximumPaintValue, translateDistance, translate} from '../query_utils';\nimport properties, {type CircleLayoutPropsPossiblyEvaluated, type CirclePaintPropsPossiblyEvaluated} from './circle_style_layer_properties.g';\nimport {type Transitionable, type Transitioning, type Layout, type PossiblyEvaluated} from '../properties';\nimport {type mat4, vec4} from 'gl-matrix';\nimport Point from '@mapbox/point-geometry';\nimport type {FeatureState, LayerSpecification} from '@maplibre/maplibre-gl-style-spec';\nimport type {IReadonlyTransform} from '../../geo/transform_interface';\nimport type {Bucket, BucketParameters} from '../../data/bucket';\nimport type {CircleLayoutProps, CirclePaintProps} from './circle_style_layer_properties.g';\nimport type {VectorTileFeature} from '@mapbox/vector-tile';\n\nexport const isCircleStyleLayer = (layer: StyleLayer): layer is CircleStyleLayer => layer.type === 'circle';\n\n/**\n * A style layer that defines a circle\n */\nexport class CircleStyleLayer extends StyleLayer {\n _unevaluatedLayout: Layout;\n layout: PossiblyEvaluated;\n\n _transitionablePaint: Transitionable;\n _transitioningPaint: Transitioning;\n paint: PossiblyEvaluated;\n\n constructor(layer: LayerSpecification) {\n super(layer, properties);\n }\n\n createBucket(parameters: BucketParameters) {\n return new CircleBucket(parameters);\n }\n\n queryRadius(bucket: Bucket): number {\n const circleBucket: CircleBucket = (bucket as any);\n return getMaximumPaintValue('circle-radius', this, circleBucket) +\n getMaximumPaintValue('circle-stroke-width', this, circleBucket) +\n translateDistance(this.paint.get('circle-translate'));\n }\n\n queryIntersectsFeature(\n queryGeometry: Array,\n feature: VectorTileFeature,\n featureState: FeatureState,\n geometry: Array>,\n zoom: number,\n transform: IReadonlyTransform,\n pixelsToTileUnits: number,\n pixelPosMatrix: mat4\n ): boolean {\n const translatedPolygon = translate(queryGeometry,\n this.paint.get('circle-translate'),\n this.paint.get('circle-translate-anchor'),\n -transform.bearingInRadians, pixelsToTileUnits);\n const radius = this.paint.get('circle-radius').evaluate(feature, featureState);\n const stroke = this.paint.get('circle-stroke-width').evaluate(feature, featureState);\n const size = radius + stroke;\n\n // For pitch-alignment: map, compare feature geometry to query geometry in the plane of the tile\n // // Otherwise, compare geometry in the plane of the viewport\n // // A circle with fixed scaling relative to the viewport gets larger in tile space as it moves into the distance\n // // A circle with fixed scaling relative to the map gets smaller in viewport space as it moves into the distance\n const alignWithMap = this.paint.get('circle-pitch-alignment') === 'map';\n const transformedPolygon = alignWithMap ? translatedPolygon : projectQueryGeometry(translatedPolygon, pixelPosMatrix);\n const transformedSize = alignWithMap ? size * pixelsToTileUnits : size;\n\n for (const ring of geometry) {\n for (const point of ring) {\n\n const transformedPoint = alignWithMap ? point : projectPoint(point, pixelPosMatrix);\n\n let adjustedSize = transformedSize;\n const projectedCenter = vec4.transformMat4([] as any, [point.x, point.y, 0, 1], pixelPosMatrix);\n if (this.paint.get('circle-pitch-scale') === 'viewport' && this.paint.get('circle-pitch-alignment') === 'map') {\n adjustedSize *= projectedCenter[3] / transform.cameraToCenterDistance;\n } else if (this.paint.get('circle-pitch-scale') === 'map' && this.paint.get('circle-pitch-alignment') === 'viewport') {\n adjustedSize *= transform.cameraToCenterDistance / projectedCenter[3];\n }\n\n if (polygonIntersectsBufferedPoint(transformedPolygon, transformedPoint, adjustedSize)) return true;\n }\n }\n\n return false;\n }\n}\n\nfunction projectPoint(p: Point, pixelPosMatrix: mat4) {\n const point = vec4.transformMat4([] as any, [p.x, p.y, 0, 1], pixelPosMatrix);\n return new Point(point[0] / point[3], point[1] / point[3]);\n}\n\nfunction projectQueryGeometry(queryGeometry: Array, pixelPosMatrix: mat4) {\n return queryGeometry.map((p) => {\n return projectPoint(p, pixelPosMatrix);\n });\n}\n","import {CircleBucket} from './circle_bucket';\nimport {register} from '../../util/web_worker_transfer';\n\nimport type {HeatmapStyleLayer} from '../../style/style_layer/heatmap_style_layer';\n\nexport class HeatmapBucket extends CircleBucket {\n // Needed for flow to accept omit: ['layers'] below, due to\n // https://github.com/facebook/flow/issues/4262\n layers: Array;\n}\n\nregister('HeatmapBucket', HeatmapBucket, {omit: ['layers']});\n","// This file is generated. Edit build/generate-style-code.ts, then run 'npm run codegen'.\n/* eslint-disable */\n\nimport {latest as styleSpec} from '@maplibre/maplibre-gl-style-spec';\n\nimport {\n Properties,\n DataConstantProperty,\n DataDrivenProperty,\n CrossFadedDataDrivenProperty,\n CrossFadedProperty,\n ColorRampProperty,\n PossiblyEvaluatedPropertyValue,\n CrossFaded\n} from '../properties';\n\nimport type {Color, Formatted, Padding, ResolvedImage, VariableAnchorOffsetCollection} from '@maplibre/maplibre-gl-style-spec';\nimport {StylePropertySpecification} from '@maplibre/maplibre-gl-style-spec';\n\n\nexport type HeatmapPaintProps = {\n \"heatmap-radius\": DataDrivenProperty,\n \"heatmap-weight\": DataDrivenProperty,\n \"heatmap-intensity\": DataConstantProperty,\n \"heatmap-color\": ColorRampProperty,\n \"heatmap-opacity\": DataConstantProperty,\n};\n\nexport type HeatmapPaintPropsPossiblyEvaluated = {\n \"heatmap-radius\": PossiblyEvaluatedPropertyValue,\n \"heatmap-weight\": PossiblyEvaluatedPropertyValue,\n \"heatmap-intensity\": number,\n \"heatmap-color\": ColorRampProperty,\n \"heatmap-opacity\": number,\n};\n\nlet paint: Properties;\nconst getPaint = () => paint = paint || new Properties({\n \"heatmap-radius\": new DataDrivenProperty(styleSpec[\"paint_heatmap\"][\"heatmap-radius\"] as any as StylePropertySpecification),\n \"heatmap-weight\": new DataDrivenProperty(styleSpec[\"paint_heatmap\"][\"heatmap-weight\"] as any as StylePropertySpecification),\n \"heatmap-intensity\": new DataConstantProperty(styleSpec[\"paint_heatmap\"][\"heatmap-intensity\"] as any as StylePropertySpecification),\n \"heatmap-color\": new ColorRampProperty(styleSpec[\"paint_heatmap\"][\"heatmap-color\"] as any as StylePropertySpecification),\n \"heatmap-opacity\": new DataConstantProperty(styleSpec[\"paint_heatmap\"][\"heatmap-opacity\"] as any as StylePropertySpecification),\n});\n\nexport default ({ get paint() { return getPaint() } });","import {register} from './web_worker_transfer';\n\nexport type Size = {\n width: number;\n height: number;\n};\n\ntype Point2D = {\n x: number;\n y: number;\n};\n\nfunction createImage(image: any, {\n width,\n height\n}: Size, channels: number, data?: Uint8Array | Uint8ClampedArray) {\n if (!data) {\n data = new Uint8Array(width * height * channels);\n } else if (data instanceof Uint8ClampedArray) {\n data = new Uint8Array(data.buffer);\n } else if (data.length !== width * height * channels) {\n throw new RangeError(`mismatched image size. expected: ${data.length} but got: ${width * height * channels}`);\n }\n image.width = width;\n image.height = height;\n image.data = data;\n return image;\n}\n\nfunction resizeImage(image: any, {\n width,\n height\n}: Size, channels: number) {\n if (width === image.width && height === image.height) {\n return;\n }\n\n const newImage = createImage({}, {width, height}, channels);\n\n copyImage(image, newImage, {x: 0, y: 0}, {x: 0, y: 0}, {\n width: Math.min(image.width, width),\n height: Math.min(image.height, height)\n }, channels);\n\n image.width = width;\n image.height = height;\n image.data = newImage.data;\n}\n\nfunction copyImage(srcImg: any, dstImg: any, srcPt: Point2D, dstPt: Point2D, size: Size, channels: number) {\n if (size.width === 0 || size.height === 0) {\n return dstImg;\n }\n\n if (size.width > srcImg.width ||\n size.height > srcImg.height ||\n srcPt.x > srcImg.width - size.width ||\n srcPt.y > srcImg.height - size.height) {\n throw new RangeError('out of range source coordinates for image copy');\n }\n\n if (size.width > dstImg.width ||\n size.height > dstImg.height ||\n dstPt.x > dstImg.width - size.width ||\n dstPt.y > dstImg.height - size.height) {\n throw new RangeError('out of range destination coordinates for image copy');\n }\n\n const srcData = srcImg.data;\n const dstData = dstImg.data;\n\n if (srcData === dstData) throw new Error('srcData equals dstData, so image is already copied');\n\n for (let y = 0; y < size.height; y++) {\n const srcOffset = ((srcPt.y + y) * srcImg.width + srcPt.x) * channels;\n const dstOffset = ((dstPt.y + y) * dstImg.width + dstPt.x) * channels;\n for (let i = 0; i < size.width * channels; i++) {\n dstData[dstOffset + i] = srcData[srcOffset + i];\n }\n }\n return dstImg;\n}\n\n/**\n * An image with alpha color value\n */\nexport class AlphaImage {\n width: number;\n height: number;\n data: Uint8Array;\n\n constructor(size: Size, data?: Uint8Array | Uint8ClampedArray) {\n createImage(this, size, 1, data);\n }\n\n resize(size: Size) {\n resizeImage(this, size, 1);\n }\n\n clone() {\n return new AlphaImage({width: this.width, height: this.height}, new Uint8Array(this.data));\n }\n\n static copy(srcImg: AlphaImage, dstImg: AlphaImage, srcPt: Point2D, dstPt: Point2D, size: Size) {\n copyImage(srcImg, dstImg, srcPt, dstPt, size, 1);\n }\n}\n\n/**\n * An object to store image data not premultiplied, because ImageData is not premultiplied.\n * UNPACK_PREMULTIPLY_ALPHA_WEBGL must be used when uploading to a texture.\n */\nexport class RGBAImage {\n width: number;\n height: number;\n\n /**\n * data must be a Uint8Array instead of Uint8ClampedArray because texImage2D does not support Uint8ClampedArray in all browsers.\n */\n data: Uint8Array;\n\n constructor(size: Size, data?: Uint8Array | Uint8ClampedArray) {\n createImage(this, size, 4, data);\n }\n\n resize(size: Size) {\n resizeImage(this, size, 4);\n }\n\n replace(data: Uint8Array | Uint8ClampedArray, copy?: boolean) {\n if (copy) {\n this.data.set(data);\n } else if (data instanceof Uint8ClampedArray) {\n this.data = new Uint8Array(data.buffer);\n } else {\n this.data = data;\n }\n }\n\n clone() {\n return new RGBAImage({width: this.width, height: this.height}, new Uint8Array(this.data));\n }\n\n static copy(srcImg: RGBAImage | ImageData, dstImg: RGBAImage, srcPt: Point2D, dstPt: Point2D, size: Size) {\n copyImage(srcImg, dstImg, srcPt, dstPt, size, 4);\n }\n}\n\nregister('AlphaImage', AlphaImage);\nregister('RGBAImage', RGBAImage);\n","import {RGBAImage} from './image';\nimport {isPowerOfTwo} from './util';\n\nimport type {StylePropertyExpression} from '@maplibre/maplibre-gl-style-spec';\n\nexport type ColorRampParams = {\n expression: StylePropertyExpression;\n evaluationKey: string;\n resolution?: number;\n image?: RGBAImage;\n clips?: Array;\n};\n\n/**\n * Given an expression that should evaluate to a color ramp,\n * return a RGBA image representing that ramp expression.\n */\nexport function renderColorRamp(params: ColorRampParams): RGBAImage {\n const evaluationGlobals = {};\n const width = params.resolution || 256;\n const height = params.clips ? params.clips.length : 1;\n const image = params.image || new RGBAImage({width, height});\n\n if (!isPowerOfTwo(width)) throw new Error(`width is not a power of 2 - ${width}`);\n\n const renderPixel = (stride, index, progress) => {\n evaluationGlobals[params.evaluationKey] = progress;\n const pxColor = params.expression.evaluate(evaluationGlobals as any);\n // the colors are being unpremultiplied because Color uses\n // premultiplied values, and the Texture class expects unpremultiplied ones\n image.data[stride + index + 0] = Math.floor(pxColor.r * 255 / pxColor.a);\n image.data[stride + index + 1] = Math.floor(pxColor.g * 255 / pxColor.a);\n image.data[stride + index + 2] = Math.floor(pxColor.b * 255 / pxColor.a);\n image.data[stride + index + 3] = Math.floor(pxColor.a * 255);\n };\n\n if (!params.clips) {\n for (let i = 0, j = 0; i < width; i++, j += 4) {\n const progress = i / (width - 1);\n\n renderPixel(0, j, progress);\n }\n } else {\n for (let clip = 0, stride = 0; clip < height; ++clip, stride += width * 4) {\n for (let i = 0, j = 0; i < width; i++, j += 4) {\n // Remap progress between clips\n const progress = i / (width - 1);\n const {start, end} = params.clips[clip];\n const evaluationProgress = start * (1 - progress) + end * progress;\n renderPixel(stride, j, evaluationProgress);\n }\n }\n }\n\n return image;\n}\n","import {StyleLayer} from '../style_layer';\n\nimport {HeatmapBucket} from '../../data/bucket/heatmap_bucket';\nimport {type RGBAImage} from '../../util/image';\nimport properties, {type HeatmapPaintPropsPossiblyEvaluated} from './heatmap_style_layer_properties.g';\nimport {renderColorRamp} from '../../util/color_ramp';\nimport {type Transitionable, type Transitioning, type PossiblyEvaluated} from '../properties';\n\nimport type {Texture} from '../../render/texture';\nimport type {Framebuffer} from '../../gl/framebuffer';\nimport type {HeatmapPaintProps} from './heatmap_style_layer_properties.g';\nimport type {LayerSpecification} from '@maplibre/maplibre-gl-style-spec';\n\nexport const HEATMAP_FULL_RENDER_FBO_KEY = 'big-fb';\n\nexport const isHeatmapStyleLayer = (layer: StyleLayer): layer is HeatmapStyleLayer => layer.type === 'heatmap';\n\n/**\n * A style layer that defines a heatmap\n */\nexport class HeatmapStyleLayer extends StyleLayer {\n\n heatmapFbos: Map;\n colorRamp: RGBAImage;\n colorRampTexture: Texture;\n\n _transitionablePaint: Transitionable;\n _transitioningPaint: Transitioning;\n paint: PossiblyEvaluated;\n\n createBucket(options: any) {\n return new HeatmapBucket(options);\n }\n\n constructor(layer: LayerSpecification) {\n super(layer, properties);\n\n this.heatmapFbos = new Map();\n // make sure color ramp texture is generated for default heatmap color too\n this._updateColorRamp();\n }\n\n _handleSpecialPaintPropertyUpdate(name: string) {\n if (name === 'heatmap-color') {\n this._updateColorRamp();\n }\n }\n\n _updateColorRamp() {\n const expression = this._transitionablePaint._values['heatmap-color'].value.expression;\n this.colorRamp = renderColorRamp({\n expression,\n evaluationKey: 'heatmapDensity',\n image: this.colorRamp\n });\n this.colorRampTexture = null;\n }\n\n resize() {\n if (this.heatmapFbos.has(HEATMAP_FULL_RENDER_FBO_KEY)) {\n this.heatmapFbos.delete(HEATMAP_FULL_RENDER_FBO_KEY);\n }\n }\n\n queryRadius(): number {\n return 0;\n }\n\n queryIntersectsFeature(): boolean {\n return false;\n }\n\n hasOffscreenPass() {\n return this.paint.get('heatmap-opacity') !== 0 && this.visibility !== 'none';\n }\n}\n","// This file is generated. Edit build/generate-style-code.ts, then run 'npm run codegen'.\n/* eslint-disable */\n\nimport {latest as styleSpec} from '@maplibre/maplibre-gl-style-spec';\n\nimport {\n Properties,\n DataConstantProperty,\n DataDrivenProperty,\n CrossFadedDataDrivenProperty,\n CrossFadedProperty,\n ColorRampProperty,\n PossiblyEvaluatedPropertyValue,\n CrossFaded\n} from '../properties';\n\nimport type {Color, Formatted, Padding, ResolvedImage, VariableAnchorOffsetCollection} from '@maplibre/maplibre-gl-style-spec';\nimport {StylePropertySpecification} from '@maplibre/maplibre-gl-style-spec';\n\n\nexport type HillshadePaintProps = {\n \"hillshade-illumination-direction\": DataConstantProperty,\n \"hillshade-illumination-anchor\": DataConstantProperty<\"map\" | \"viewport\">,\n \"hillshade-exaggeration\": DataConstantProperty,\n \"hillshade-shadow-color\": DataConstantProperty,\n \"hillshade-highlight-color\": DataConstantProperty,\n \"hillshade-accent-color\": DataConstantProperty,\n};\n\nexport type HillshadePaintPropsPossiblyEvaluated = {\n \"hillshade-illumination-direction\": number,\n \"hillshade-illumination-anchor\": \"map\" | \"viewport\",\n \"hillshade-exaggeration\": number,\n \"hillshade-shadow-color\": Color,\n \"hillshade-highlight-color\": Color,\n \"hillshade-accent-color\": Color,\n};\n\nlet paint: Properties;\nconst getPaint = () => paint = paint || new Properties({\n \"hillshade-illumination-direction\": new DataConstantProperty(styleSpec[\"paint_hillshade\"][\"hillshade-illumination-direction\"] as any as StylePropertySpecification),\n \"hillshade-illumination-anchor\": new DataConstantProperty(styleSpec[\"paint_hillshade\"][\"hillshade-illumination-anchor\"] as any as StylePropertySpecification),\n \"hillshade-exaggeration\": new DataConstantProperty(styleSpec[\"paint_hillshade\"][\"hillshade-exaggeration\"] as any as StylePropertySpecification),\n \"hillshade-shadow-color\": new DataConstantProperty(styleSpec[\"paint_hillshade\"][\"hillshade-shadow-color\"] as any as StylePropertySpecification),\n \"hillshade-highlight-color\": new DataConstantProperty(styleSpec[\"paint_hillshade\"][\"hillshade-highlight-color\"] as any as StylePropertySpecification),\n \"hillshade-accent-color\": new DataConstantProperty(styleSpec[\"paint_hillshade\"][\"hillshade-accent-color\"] as any as StylePropertySpecification),\n});\n\nexport default ({ get paint() { return getPaint() } });","import {StyleLayer} from '../style_layer';\n\nimport properties, {type HillshadePaintPropsPossiblyEvaluated} from './hillshade_style_layer_properties.g';\nimport {type Transitionable, type Transitioning, type PossiblyEvaluated} from '../properties';\n\nimport type {HillshadePaintProps} from './hillshade_style_layer_properties.g';\nimport type {LayerSpecification} from '@maplibre/maplibre-gl-style-spec';\n\nexport const isHillshadeStyleLayer = (layer: StyleLayer): layer is HillshadeStyleLayer => layer.type === 'hillshade';\n\nexport class HillshadeStyleLayer extends StyleLayer {\n _transitionablePaint: Transitionable;\n _transitioningPaint: Transitioning;\n paint: PossiblyEvaluated;\n\n constructor(layer: LayerSpecification) {\n super(layer, properties);\n }\n\n hasOffscreenPass() {\n return this.paint.get('hillshade-exaggeration') !== 0 && this.visibility !== 'none';\n }\n}\n","import {createLayout} from '../../util/struct_array';\n\nconst layout = createLayout([\n {name: 'a_pos', components: 2, type: 'Int16'}\n], 4);\n\nexport default layout;\nexport const {members, size, alignment} = layout;\n","import type {FillStyleLayer} from '../../style/style_layer/fill_style_layer';\nimport type {FillExtrusionStyleLayer} from '../../style/style_layer/fill_extrusion_style_layer';\nimport type {LineStyleLayer} from '../../style/style_layer/line_style_layer';\n\nimport type {\n BucketFeature,\n PopulateParameters\n} from '../bucket';\nimport {type PossiblyEvaluated} from '../../style/properties';\n\ntype PatternStyleLayers = Array | Array | Array;\n\nexport function hasPattern(type: string, layers: PatternStyleLayers, options: PopulateParameters) {\n const patterns = options.patternDependencies;\n let hasPattern = false;\n\n for (const layer of layers) {\n const patternProperty = (layer.paint as PossiblyEvaluated).get(`${type}-pattern`);\n if (!patternProperty.isConstant()) {\n hasPattern = true;\n }\n\n const constantPattern = patternProperty.constantOr(null);\n if (constantPattern) {\n hasPattern = true;\n patterns[constantPattern.to] = true;\n patterns[constantPattern.from] = true;\n }\n }\n\n return hasPattern;\n}\n\nexport function addPatternDependencies(type: string, layers: PatternStyleLayers, patternFeature: BucketFeature, zoom: number, options: PopulateParameters) {\n const patterns = options.patternDependencies;\n for (const layer of layers) {\n const patternProperty = (layer.paint as PossiblyEvaluated).get(`${type}-pattern`);\n\n const patternPropertyValue = patternProperty.value;\n if (patternPropertyValue.kind !== 'constant') {\n let min = patternPropertyValue.evaluate({zoom: zoom - 1}, patternFeature, {}, options.availableImages);\n let mid = patternPropertyValue.evaluate({zoom}, patternFeature, {}, options.availableImages);\n let max = patternPropertyValue.evaluate({zoom: zoom + 1}, patternFeature, {}, options.availableImages);\n min = min && min.name ? min.name : min;\n mid = mid && mid.name ? mid.name : mid;\n max = max && max.name ? max.name : max;\n // add to patternDependencies\n patterns[min] = true;\n patterns[mid] = true;\n patterns[max] = true;\n\n // save for layout\n patternFeature.patterns[layer.id] = {min, mid, max};\n }\n }\n return patternFeature;\n}\n","\nexport default function earcut(data, holeIndices, dim = 2) {\n\n const hasHoles = holeIndices && holeIndices.length;\n const outerLen = hasHoles ? holeIndices[0] * dim : data.length;\n let outerNode = linkedList(data, 0, outerLen, dim, true);\n const triangles = [];\n\n if (!outerNode || outerNode.next === outerNode.prev) return triangles;\n\n let minX, minY, invSize;\n\n if (hasHoles) outerNode = eliminateHoles(data, holeIndices, outerNode, dim);\n\n // if the shape is not too simple, we'll use z-order curve hash later; calculate polygon bbox\n if (data.length > 80 * dim) {\n minX = Infinity;\n minY = Infinity;\n let maxX = -Infinity;\n let maxY = -Infinity;\n\n for (let i = dim; i < outerLen; i += dim) {\n const x = data[i];\n const y = data[i + 1];\n if (x < minX) minX = x;\n if (y < minY) minY = y;\n if (x > maxX) maxX = x;\n if (y > maxY) maxY = y;\n }\n\n // minX, minY and invSize are later used to transform coords into integers for z-order calculation\n invSize = Math.max(maxX - minX, maxY - minY);\n invSize = invSize !== 0 ? 32767 / invSize : 0;\n }\n\n earcutLinked(outerNode, triangles, dim, minX, minY, invSize, 0);\n\n return triangles;\n}\n\n// create a circular doubly linked list from polygon points in the specified winding order\nfunction linkedList(data, start, end, dim, clockwise) {\n let last;\n\n if (clockwise === (signedArea(data, start, end, dim) > 0)) {\n for (let i = start; i < end; i += dim) last = insertNode(i / dim | 0, data[i], data[i + 1], last);\n } else {\n for (let i = end - dim; i >= start; i -= dim) last = insertNode(i / dim | 0, data[i], data[i + 1], last);\n }\n\n if (last && equals(last, last.next)) {\n removeNode(last);\n last = last.next;\n }\n\n return last;\n}\n\n// eliminate colinear or duplicate points\nfunction filterPoints(start, end) {\n if (!start) return start;\n if (!end) end = start;\n\n let p = start,\n again;\n do {\n again = false;\n\n if (!p.steiner && (equals(p, p.next) || area(p.prev, p, p.next) === 0)) {\n removeNode(p);\n p = end = p.prev;\n if (p === p.next) break;\n again = true;\n\n } else {\n p = p.next;\n }\n } while (again || p !== end);\n\n return end;\n}\n\n// main ear slicing loop which triangulates a polygon (given as a linked list)\nfunction earcutLinked(ear, triangles, dim, minX, minY, invSize, pass) {\n if (!ear) return;\n\n // interlink polygon nodes in z-order\n if (!pass && invSize) indexCurve(ear, minX, minY, invSize);\n\n let stop = ear;\n\n // iterate through ears, slicing them one by one\n while (ear.prev !== ear.next) {\n const prev = ear.prev;\n const next = ear.next;\n\n if (invSize ? isEarHashed(ear, minX, minY, invSize) : isEar(ear)) {\n triangles.push(prev.i, ear.i, next.i); // cut off the triangle\n\n removeNode(ear);\n\n // skipping the next vertex leads to less sliver triangles\n ear = next.next;\n stop = next.next;\n\n continue;\n }\n\n ear = next;\n\n // if we looped through the whole remaining polygon and can't find any more ears\n if (ear === stop) {\n // try filtering points and slicing again\n if (!pass) {\n earcutLinked(filterPoints(ear), triangles, dim, minX, minY, invSize, 1);\n\n // if this didn't work, try curing all small self-intersections locally\n } else if (pass === 1) {\n ear = cureLocalIntersections(filterPoints(ear), triangles);\n earcutLinked(ear, triangles, dim, minX, minY, invSize, 2);\n\n // as a last resort, try splitting the remaining polygon into two\n } else if (pass === 2) {\n splitEarcut(ear, triangles, dim, minX, minY, invSize);\n }\n\n break;\n }\n }\n}\n\n// check whether a polygon node forms a valid ear with adjacent nodes\nfunction isEar(ear) {\n const a = ear.prev,\n b = ear,\n c = ear.next;\n\n if (area(a, b, c) >= 0) return false; // reflex, can't be an ear\n\n // now make sure we don't have other points inside the potential ear\n const ax = a.x, bx = b.x, cx = c.x, ay = a.y, by = b.y, cy = c.y;\n\n // triangle bbox; min & max are calculated like this for speed\n const x0 = ax < bx ? (ax < cx ? ax : cx) : (bx < cx ? bx : cx),\n y0 = ay < by ? (ay < cy ? ay : cy) : (by < cy ? by : cy),\n x1 = ax > bx ? (ax > cx ? ax : cx) : (bx > cx ? bx : cx),\n y1 = ay > by ? (ay > cy ? ay : cy) : (by > cy ? by : cy);\n\n let p = c.next;\n while (p !== a) {\n if (p.x >= x0 && p.x <= x1 && p.y >= y0 && p.y <= y1 &&\n pointInTriangle(ax, ay, bx, by, cx, cy, p.x, p.y) &&\n area(p.prev, p, p.next) >= 0) return false;\n p = p.next;\n }\n\n return true;\n}\n\nfunction isEarHashed(ear, minX, minY, invSize) {\n const a = ear.prev,\n b = ear,\n c = ear.next;\n\n if (area(a, b, c) >= 0) return false; // reflex, can't be an ear\n\n const ax = a.x, bx = b.x, cx = c.x, ay = a.y, by = b.y, cy = c.y;\n\n // triangle bbox; min & max are calculated like this for speed\n const x0 = ax < bx ? (ax < cx ? ax : cx) : (bx < cx ? bx : cx),\n y0 = ay < by ? (ay < cy ? ay : cy) : (by < cy ? by : cy),\n x1 = ax > bx ? (ax > cx ? ax : cx) : (bx > cx ? bx : cx),\n y1 = ay > by ? (ay > cy ? ay : cy) : (by > cy ? by : cy);\n\n // z-order range for the current triangle bbox;\n const minZ = zOrder(x0, y0, minX, minY, invSize),\n maxZ = zOrder(x1, y1, minX, minY, invSize);\n\n let p = ear.prevZ,\n n = ear.nextZ;\n\n // look for points inside the triangle in both directions\n while (p && p.z >= minZ && n && n.z <= maxZ) {\n if (p.x >= x0 && p.x <= x1 && p.y >= y0 && p.y <= y1 && p !== a && p !== c &&\n pointInTriangle(ax, ay, bx, by, cx, cy, p.x, p.y) && area(p.prev, p, p.next) >= 0) return false;\n p = p.prevZ;\n\n if (n.x >= x0 && n.x <= x1 && n.y >= y0 && n.y <= y1 && n !== a && n !== c &&\n pointInTriangle(ax, ay, bx, by, cx, cy, n.x, n.y) && area(n.prev, n, n.next) >= 0) return false;\n n = n.nextZ;\n }\n\n // look for remaining points in decreasing z-order\n while (p && p.z >= minZ) {\n if (p.x >= x0 && p.x <= x1 && p.y >= y0 && p.y <= y1 && p !== a && p !== c &&\n pointInTriangle(ax, ay, bx, by, cx, cy, p.x, p.y) && area(p.prev, p, p.next) >= 0) return false;\n p = p.prevZ;\n }\n\n // look for remaining points in increasing z-order\n while (n && n.z <= maxZ) {\n if (n.x >= x0 && n.x <= x1 && n.y >= y0 && n.y <= y1 && n !== a && n !== c &&\n pointInTriangle(ax, ay, bx, by, cx, cy, n.x, n.y) && area(n.prev, n, n.next) >= 0) return false;\n n = n.nextZ;\n }\n\n return true;\n}\n\n// go through all polygon nodes and cure small local self-intersections\nfunction cureLocalIntersections(start, triangles) {\n let p = start;\n do {\n const a = p.prev,\n b = p.next.next;\n\n if (!equals(a, b) && intersects(a, p, p.next, b) && locallyInside(a, b) && locallyInside(b, a)) {\n\n triangles.push(a.i, p.i, b.i);\n\n // remove two nodes involved\n removeNode(p);\n removeNode(p.next);\n\n p = start = b;\n }\n p = p.next;\n } while (p !== start);\n\n return filterPoints(p);\n}\n\n// try splitting polygon into two and triangulate them independently\nfunction splitEarcut(start, triangles, dim, minX, minY, invSize) {\n // look for a valid diagonal that divides the polygon into two\n let a = start;\n do {\n let b = a.next.next;\n while (b !== a.prev) {\n if (a.i !== b.i && isValidDiagonal(a, b)) {\n // split the polygon in two by the diagonal\n let c = splitPolygon(a, b);\n\n // filter colinear points around the cuts\n a = filterPoints(a, a.next);\n c = filterPoints(c, c.next);\n\n // run earcut on each half\n earcutLinked(a, triangles, dim, minX, minY, invSize, 0);\n earcutLinked(c, triangles, dim, minX, minY, invSize, 0);\n return;\n }\n b = b.next;\n }\n a = a.next;\n } while (a !== start);\n}\n\n// link every hole into the outer loop, producing a single-ring polygon without holes\nfunction eliminateHoles(data, holeIndices, outerNode, dim) {\n const queue = [];\n\n for (let i = 0, len = holeIndices.length; i < len; i++) {\n const start = holeIndices[i] * dim;\n const end = i < len - 1 ? holeIndices[i + 1] * dim : data.length;\n const list = linkedList(data, start, end, dim, false);\n if (list === list.next) list.steiner = true;\n queue.push(getLeftmost(list));\n }\n\n queue.sort(compareX);\n\n // process holes from left to right\n for (let i = 0; i < queue.length; i++) {\n outerNode = eliminateHole(queue[i], outerNode);\n }\n\n return outerNode;\n}\n\nfunction compareX(a, b) {\n return a.x - b.x;\n}\n\n// find a bridge between vertices that connects hole with an outer ring and and link it\nfunction eliminateHole(hole, outerNode) {\n const bridge = findHoleBridge(hole, outerNode);\n if (!bridge) {\n return outerNode;\n }\n\n const bridgeReverse = splitPolygon(bridge, hole);\n\n // filter collinear points around the cuts\n filterPoints(bridgeReverse, bridgeReverse.next);\n return filterPoints(bridge, bridge.next);\n}\n\n// David Eberly's algorithm for finding a bridge between hole and outer polygon\nfunction findHoleBridge(hole, outerNode) {\n let p = outerNode;\n const hx = hole.x;\n const hy = hole.y;\n let qx = -Infinity;\n let m;\n\n // find a segment intersected by a ray from the hole's leftmost point to the left;\n // segment's endpoint with lesser x will be potential connection point\n do {\n if (hy <= p.y && hy >= p.next.y && p.next.y !== p.y) {\n const x = p.x + (hy - p.y) * (p.next.x - p.x) / (p.next.y - p.y);\n if (x <= hx && x > qx) {\n qx = x;\n m = p.x < p.next.x ? p : p.next;\n if (x === hx) return m; // hole touches outer segment; pick leftmost endpoint\n }\n }\n p = p.next;\n } while (p !== outerNode);\n\n if (!m) return null;\n\n // look for points inside the triangle of hole point, segment intersection and endpoint;\n // if there are no points found, we have a valid connection;\n // otherwise choose the point of the minimum angle with the ray as connection point\n\n const stop = m;\n const mx = m.x;\n const my = m.y;\n let tanMin = Infinity;\n\n p = m;\n\n do {\n if (hx >= p.x && p.x >= mx && hx !== p.x &&\n pointInTriangle(hy < my ? hx : qx, hy, mx, my, hy < my ? qx : hx, hy, p.x, p.y)) {\n\n const tan = Math.abs(hy - p.y) / (hx - p.x); // tangential\n\n if (locallyInside(p, hole) &&\n (tan < tanMin || (tan === tanMin && (p.x > m.x || (p.x === m.x && sectorContainsSector(m, p)))))) {\n m = p;\n tanMin = tan;\n }\n }\n\n p = p.next;\n } while (p !== stop);\n\n return m;\n}\n\n// whether sector in vertex m contains sector in vertex p in the same coordinates\nfunction sectorContainsSector(m, p) {\n return area(m.prev, m, p.prev) < 0 && area(p.next, m, m.next) < 0;\n}\n\n// interlink polygon nodes in z-order\nfunction indexCurve(start, minX, minY, invSize) {\n let p = start;\n do {\n if (p.z === 0) p.z = zOrder(p.x, p.y, minX, minY, invSize);\n p.prevZ = p.prev;\n p.nextZ = p.next;\n p = p.next;\n } while (p !== start);\n\n p.prevZ.nextZ = null;\n p.prevZ = null;\n\n sortLinked(p);\n}\n\n// Simon Tatham's linked list merge sort algorithm\n// http://www.chiark.greenend.org.uk/~sgtatham/algorithms/listsort.html\nfunction sortLinked(list) {\n let numMerges;\n let inSize = 1;\n\n do {\n let p = list;\n let e;\n list = null;\n let tail = null;\n numMerges = 0;\n\n while (p) {\n numMerges++;\n let q = p;\n let pSize = 0;\n for (let i = 0; i < inSize; i++) {\n pSize++;\n q = q.nextZ;\n if (!q) break;\n }\n let qSize = inSize;\n\n while (pSize > 0 || (qSize > 0 && q)) {\n\n if (pSize !== 0 && (qSize === 0 || !q || p.z <= q.z)) {\n e = p;\n p = p.nextZ;\n pSize--;\n } else {\n e = q;\n q = q.nextZ;\n qSize--;\n }\n\n if (tail) tail.nextZ = e;\n else list = e;\n\n e.prevZ = tail;\n tail = e;\n }\n\n p = q;\n }\n\n tail.nextZ = null;\n inSize *= 2;\n\n } while (numMerges > 1);\n\n return list;\n}\n\n// z-order of a point given coords and inverse of the longer side of data bbox\nfunction zOrder(x, y, minX, minY, invSize) {\n // coords are transformed into non-negative 15-bit integer range\n x = (x - minX) * invSize | 0;\n y = (y - minY) * invSize | 0;\n\n x = (x | (x << 8)) & 0x00FF00FF;\n x = (x | (x << 4)) & 0x0F0F0F0F;\n x = (x | (x << 2)) & 0x33333333;\n x = (x | (x << 1)) & 0x55555555;\n\n y = (y | (y << 8)) & 0x00FF00FF;\n y = (y | (y << 4)) & 0x0F0F0F0F;\n y = (y | (y << 2)) & 0x33333333;\n y = (y | (y << 1)) & 0x55555555;\n\n return x | (y << 1);\n}\n\n// find the leftmost node of a polygon ring\nfunction getLeftmost(start) {\n let p = start,\n leftmost = start;\n do {\n if (p.x < leftmost.x || (p.x === leftmost.x && p.y < leftmost.y)) leftmost = p;\n p = p.next;\n } while (p !== start);\n\n return leftmost;\n}\n\n// check if a point lies within a convex triangle\nfunction pointInTriangle(ax, ay, bx, by, cx, cy, px, py) {\n return (cx - px) * (ay - py) >= (ax - px) * (cy - py) &&\n (ax - px) * (by - py) >= (bx - px) * (ay - py) &&\n (bx - px) * (cy - py) >= (cx - px) * (by - py);\n}\n\n// check if a diagonal between two polygon nodes is valid (lies in polygon interior)\nfunction isValidDiagonal(a, b) {\n return a.next.i !== b.i && a.prev.i !== b.i && !intersectsPolygon(a, b) && // dones't intersect other edges\n (locallyInside(a, b) && locallyInside(b, a) && middleInside(a, b) && // locally visible\n (area(a.prev, a, b.prev) || area(a, b.prev, b)) || // does not create opposite-facing sectors\n equals(a, b) && area(a.prev, a, a.next) > 0 && area(b.prev, b, b.next) > 0); // special zero-length case\n}\n\n// signed area of a triangle\nfunction area(p, q, r) {\n return (q.y - p.y) * (r.x - q.x) - (q.x - p.x) * (r.y - q.y);\n}\n\n// check if two points are equal\nfunction equals(p1, p2) {\n return p1.x === p2.x && p1.y === p2.y;\n}\n\n// check if two segments intersect\nfunction intersects(p1, q1, p2, q2) {\n const o1 = sign(area(p1, q1, p2));\n const o2 = sign(area(p1, q1, q2));\n const o3 = sign(area(p2, q2, p1));\n const o4 = sign(area(p2, q2, q1));\n\n if (o1 !== o2 && o3 !== o4) return true; // general case\n\n if (o1 === 0 && onSegment(p1, p2, q1)) return true; // p1, q1 and p2 are collinear and p2 lies on p1q1\n if (o2 === 0 && onSegment(p1, q2, q1)) return true; // p1, q1 and q2 are collinear and q2 lies on p1q1\n if (o3 === 0 && onSegment(p2, p1, q2)) return true; // p2, q2 and p1 are collinear and p1 lies on p2q2\n if (o4 === 0 && onSegment(p2, q1, q2)) return true; // p2, q2 and q1 are collinear and q1 lies on p2q2\n\n return false;\n}\n\n// for collinear points p, q, r, check if point q lies on segment pr\nfunction onSegment(p, q, r) {\n return q.x <= Math.max(p.x, r.x) && q.x >= Math.min(p.x, r.x) && q.y <= Math.max(p.y, r.y) && q.y >= Math.min(p.y, r.y);\n}\n\nfunction sign(num) {\n return num > 0 ? 1 : num < 0 ? -1 : 0;\n}\n\n// check if a polygon diagonal intersects any polygon segments\nfunction intersectsPolygon(a, b) {\n let p = a;\n do {\n if (p.i !== a.i && p.next.i !== a.i && p.i !== b.i && p.next.i !== b.i &&\n intersects(p, p.next, a, b)) return true;\n p = p.next;\n } while (p !== a);\n\n return false;\n}\n\n// check if a polygon diagonal is locally inside the polygon\nfunction locallyInside(a, b) {\n return area(a.prev, a, a.next) < 0 ?\n area(a, b, a.next) >= 0 && area(a, a.prev, b) >= 0 :\n area(a, b, a.prev) < 0 || area(a, a.next, b) < 0;\n}\n\n// check if the middle point of a polygon diagonal is inside the polygon\nfunction middleInside(a, b) {\n let p = a;\n let inside = false;\n const px = (a.x + b.x) / 2;\n const py = (a.y + b.y) / 2;\n do {\n if (((p.y > py) !== (p.next.y > py)) && p.next.y !== p.y &&\n (px < (p.next.x - p.x) * (py - p.y) / (p.next.y - p.y) + p.x))\n inside = !inside;\n p = p.next;\n } while (p !== a);\n\n return inside;\n}\n\n// link two polygon vertices with a bridge; if the vertices belong to the same ring, it splits polygon into two;\n// if one belongs to the outer ring and another to a hole, it merges it into a single ring\nfunction splitPolygon(a, b) {\n const a2 = createNode(a.i, a.x, a.y),\n b2 = createNode(b.i, b.x, b.y),\n an = a.next,\n bp = b.prev;\n\n a.next = b;\n b.prev = a;\n\n a2.next = an;\n an.prev = a2;\n\n b2.next = a2;\n a2.prev = b2;\n\n bp.next = b2;\n b2.prev = bp;\n\n return b2;\n}\n\n// create a node and optionally link it with previous one (in a circular doubly linked list)\nfunction insertNode(i, x, y, last) {\n const p = createNode(i, x, y);\n\n if (!last) {\n p.prev = p;\n p.next = p;\n\n } else {\n p.next = last.next;\n p.prev = last;\n last.next.prev = p;\n last.next = p;\n }\n return p;\n}\n\nfunction removeNode(p) {\n p.next.prev = p.prev;\n p.prev.next = p.next;\n\n if (p.prevZ) p.prevZ.nextZ = p.nextZ;\n if (p.nextZ) p.nextZ.prevZ = p.prevZ;\n}\n\nfunction createNode(i, x, y) {\n return {\n i, // vertex index in coordinates array\n x, y, // vertex coordinates\n prev: null, // previous and next vertex nodes in a polygon ring\n next: null,\n z: 0, // z-order curve value\n prevZ: null, // previous and next nodes in z-order\n nextZ: null,\n steiner: false // indicates whether this is a steiner point\n };\n}\n\n// return a percentage difference between the polygon area and its triangulation area;\n// used to verify correctness of triangulation\nexport function deviation(data, holeIndices, dim, triangles) {\n const hasHoles = holeIndices && holeIndices.length;\n const outerLen = hasHoles ? holeIndices[0] * dim : data.length;\n\n let polygonArea = Math.abs(signedArea(data, 0, outerLen, dim));\n if (hasHoles) {\n for (let i = 0, len = holeIndices.length; i < len; i++) {\n const start = holeIndices[i] * dim;\n const end = i < len - 1 ? holeIndices[i + 1] * dim : data.length;\n polygonArea -= Math.abs(signedArea(data, start, end, dim));\n }\n }\n\n let trianglesArea = 0;\n for (let i = 0; i < triangles.length; i += 3) {\n const a = triangles[i] * dim;\n const b = triangles[i + 1] * dim;\n const c = triangles[i + 2] * dim;\n trianglesArea += Math.abs(\n (data[a] - data[c]) * (data[b + 1] - data[a + 1]) -\n (data[a] - data[b]) * (data[c + 1] - data[a + 1]));\n }\n\n return polygonArea === 0 && trianglesArea === 0 ? 0 :\n Math.abs((trianglesArea - polygonArea) / polygonArea);\n}\n\nfunction signedArea(data, start, end, dim) {\n let sum = 0;\n for (let i = start, j = end - dim; i < end; i += dim) {\n sum += (data[j] - data[i]) * (data[i + 1] + data[j + 1]);\n j = i;\n }\n return sum;\n}\n\n// turn a polygon in a multi-dimensional array form (e.g. as in GeoJSON) into a form Earcut accepts\nexport function flatten(data) {\n const vertices = [];\n const holes = [];\n const dimensions = data[0][0].length;\n let holeIndex = 0;\n let prevLen = 0;\n\n for (const ring of data) {\n for (const p of ring) {\n for (let d = 0; d < dimensions; d++) vertices.push(p[d]);\n }\n if (prevLen) {\n holeIndex += prevLen;\n holes.push(holeIndex);\n }\n prevLen = ring.length;\n }\n return {vertices, holes, dimensions};\n}\n","// Should match actual possible granularity settings from circle_bucket.ts\n\n/**\n * Defines the granularity of subdivision for circles with `circle-pitch-alignment: 'map'` and for heatmap kernels.\n * More subdivision will cause circles to more closely follow the planet's surface.\n *\n * Possible values: 1, 3, 5, 7.\n * Subdivision of 1 results in a simple quad.\n */\nexport type CircleGranularity = 1 | 3 | 5 | 7;\n\n/**\n * Controls how much subdivision happens for a given type of geometry at different zoom levels.\n */\nexport class SubdivisionGranularityExpression {\n /**\n * A tile of zoom level 0 will be subdivided to this granularity level.\n * Each subsequent zoom level will have its granularity halved.\n */\n private readonly _baseZoomGranularity: number;\n\n /**\n * No tile will have granularity level smaller than this.\n */\n private readonly _minGranularity: number;\n\n constructor(baseZoomGranularity: number, minGranularity: number) {\n if (minGranularity > baseZoomGranularity) {\n throw new Error('Min granularity must not be greater than base granularity.');\n }\n\n this._baseZoomGranularity = baseZoomGranularity;\n this._minGranularity = minGranularity;\n }\n\n public getGranularityForZoomLevel(zoomLevel: number): number {\n const divisor = 1 << zoomLevel;\n return Math.max(Math.floor(this._baseZoomGranularity / divisor), this._minGranularity, 1);\n }\n}\n\n/**\n * An object describing how much subdivision should be applied to different types of geometry at different zoom levels.\n */\nexport class SubdivisionGranularitySetting {\n /**\n * Granularity settings used for fill and fill-extrusion layers (for fill, both polygons and their anti-aliasing outlines).\n */\n public readonly fill: SubdivisionGranularityExpression;\n\n /**\n * Granularity used for the line layer.\n */\n public readonly line: SubdivisionGranularityExpression;\n\n /**\n * Granularity used for geometry covering the entire tile: raster tiles, etc.\n */\n public readonly tile: SubdivisionGranularityExpression;\n\n /**\n * Granularity used for stencil masks for tiles.\n */\n public readonly stencil: SubdivisionGranularityExpression;\n\n /**\n * Controls the granularity of `pitch-alignment: map` circles and heatmap kernels.\n * More granular circles will more closely follow the map's surface.\n */\n public readonly circle: CircleGranularity;\n\n constructor(options: {\n /**\n * Granularity settings used for fill and fill-extrusion layers (for fill, both polygons and their anti-aliasing outlines).\n */\n fill: SubdivisionGranularityExpression;\n /**\n * Granularity used for the line layer.\n */\n line: SubdivisionGranularityExpression;\n /**\n * Granularity used for geometry covering the entire tile: stencil masks, raster tiles, etc.\n */\n tile: SubdivisionGranularityExpression;\n /**\n * Granularity used for stencil masks for tiles.\n */\n stencil: SubdivisionGranularityExpression;\n /**\n * Controls the granularity of `pitch-alignment: map` circles and heatmap kernels.\n * More granular circles will more closely follow the map's surface.\n */\n circle: CircleGranularity;\n }) {\n this.fill = options.fill;\n this.line = options.line;\n this.tile = options.tile;\n this.stencil = options.stencil;\n this.circle = options.circle;\n }\n\n /**\n * Granularity settings that disable subdivision altogether.\n */\n public static readonly noSubdivision = new SubdivisionGranularitySetting({\n fill: new SubdivisionGranularityExpression(0, 0),\n line: new SubdivisionGranularityExpression(0, 0),\n tile: new SubdivisionGranularityExpression(0, 0),\n stencil: new SubdivisionGranularityExpression(0, 0),\n circle: 1\n });\n}\n","import Point from '@mapbox/point-geometry';\nimport {EXTENT} from '../data/extent';\nimport {type CanonicalTileID} from '../source/tile_id';\nimport earcut from 'earcut';\nimport {SubdivisionGranularityExpression, SubdivisionGranularitySetting} from './subdivision_granularity_settings';\nimport {register} from '../util/web_worker_transfer';\n\nregister('SubdivisionGranularityExpression', SubdivisionGranularityExpression);\nregister('SubdivisionGranularitySetting', SubdivisionGranularitySetting);\n\ntype SubdivisionResult = {\n verticesFlattened: Array;\n indicesTriangles: Array;\n\n /**\n * An array of arrays of indices of subdivided lines for polygon outlines.\n * Each array of lines corresponds to one ring of the original polygon.\n */\n indicesLineList: Array>;\n};\n\n// Special pole vertices have coordinates -32768,-32768 for the north pole and 32767,32767 for the south pole.\n// First, find any *non-pole* vertices at those coordinates and move them slightly elsewhere.\nexport const NORTH_POLE_Y = -32768;\nexport const SOUTH_POLE_Y = 32767;\n\nclass Subdivider {\n /**\n * Flattened vertex positions (xyxyxy).\n */\n private _vertexBuffer: Array = [];\n\n /**\n * Map of \"vertex x and y coordinate\" to \"index of such vertex\".\n */\n private _vertexDictionary: Map = new Map();\n private _used: boolean = false;\n\n private readonly _canonical: CanonicalTileID;\n\n private readonly _granularity;\n private readonly _granularityCellSize;\n\n constructor(granularity: number, canonical: CanonicalTileID) {\n this._granularity = granularity;\n this._granularityCellSize = EXTENT / granularity;\n this._canonical = canonical;\n }\n\n private _getKey(x: number, y: number) {\n // Assumes signed 16 bit positions.\n x = x + 32768;\n y = y + 32768;\n return (x << 16) | (y << 0);\n }\n\n /**\n * Returns an index into the internal vertex buffer for a vertex at the given coordinates.\n * If the internal vertex buffer contains no such vertex, then it is added.\n */\n private _vertexToIndex(x: number, y: number): number {\n if (x < -32768 || y < -32768 || x > 32767 || y > 32767) {\n throw new Error('Vertex coordinates are out of signed 16 bit integer range.');\n }\n const xInt = Math.round(x) | 0;\n const yInt = Math.round(y) | 0;\n const key = this._getKey(xInt, yInt);\n if (this._vertexDictionary.has(key)) {\n return this._vertexDictionary.get(key);\n }\n const index = this._vertexBuffer.length / 2;\n this._vertexDictionary.set(key, index);\n this._vertexBuffer.push(xInt, yInt);\n return index;\n }\n\n /**\n * Subdivides a polygon by iterating over rows of granularity subdivision cells and splitting each row along vertical subdivision axes.\n * @param inputIndices - Indices into the internal vertex buffer of the triangulated polygon (after running `earcut`).\n * @returns Indices into the internal vertex buffer for triangles that are a subdivision of the input geometry.\n */\n private _subdivideTrianglesScanline(inputIndices: Array): Array {\n // A granularity cell is the square space between axes that subdivide geometry.\n // For granularity 8, cells would be 1024 by 1024 units.\n // For each triangle, we iterate over all cell rows it intersects, and generate subdivided geometry\n // only within one cell row at a time. This way, we implicitly subdivide along the X-parallel axes (cell row boundaries).\n // For each cell row, we generate an ordered point ring that describes the subdivided geometry inside this row (an intersection of the triangle and a given cell row).\n // Such ordered ring can be trivially triangulated.\n // Each ring may consist of sections of triangle edges that lie inside the cell row, and cell boundaries that lie inside the triangle. Both must be further subdivided along Y-parallel axes.\n // Most complexity of this function comes from generating correct vertex rings, and from placing the vertices into the ring in the correct order.\n\n if (this._granularity < 2) {\n // The actual subdivision code always produces triangles with the correct winding order.\n // Also apply winding order correction when skipping subdivision altogether to maintain consistency.\n return fixWindingOrder(this._vertexBuffer, inputIndices);\n }\n\n const finalIndices = [];\n\n // Iterate over all input triangles\n const numIndices = inputIndices.length;\n for (let primitiveIndex = 0; primitiveIndex < numIndices; primitiveIndex += 3) {\n const triangleIndices: [number, number, number] = [\n inputIndices[primitiveIndex + 0], // v0\n inputIndices[primitiveIndex + 1], // v1\n inputIndices[primitiveIndex + 2], // v2\n ];\n\n const triangleVertices: [number, number, number, number, number, number] = [\n this._vertexBuffer[inputIndices[primitiveIndex + 0] * 2 + 0], // v0.x\n this._vertexBuffer[inputIndices[primitiveIndex + 0] * 2 + 1], // v0.y\n this._vertexBuffer[inputIndices[primitiveIndex + 1] * 2 + 0], // v1.x\n this._vertexBuffer[inputIndices[primitiveIndex + 1] * 2 + 1], // v1.y\n this._vertexBuffer[inputIndices[primitiveIndex + 2] * 2 + 0], // v2.x\n this._vertexBuffer[inputIndices[primitiveIndex + 2] * 2 + 1], // v2.y\n ];\n\n let minX = Infinity;\n let minY = Infinity;\n let maxX = -Infinity;\n let maxY = -Infinity;\n\n // Compute AABB\n for (let i = 0; i < 3; i++) {\n const vx = triangleVertices[i * 2];\n const vy = triangleVertices[i * 2 + 1];\n minX = Math.min(minX, vx);\n maxX = Math.max(maxX, vx);\n minY = Math.min(minY, vy);\n maxY = Math.max(maxY, vy);\n }\n\n if (minX === maxX || minY === maxY) {\n continue; // Skip degenerate linear axis-aligned triangles\n }\n\n const cellXmin = Math.floor(minX / this._granularityCellSize);\n const cellXmax = Math.ceil(maxX / this._granularityCellSize);\n const cellYmin = Math.floor(minY / this._granularityCellSize);\n const cellYmax = Math.ceil(maxY / this._granularityCellSize);\n\n // Skip subdividing triangles that do not span multiple cells - just add them \"as is\".\n if (cellXmin === cellXmax && cellYmin === cellYmax) {\n finalIndices.push(...triangleIndices);\n continue;\n }\n\n // Iterate over cell rows that intersect this triangle\n for (let cellRow = cellYmin; cellRow < cellYmax; cellRow++) {\n const ring = this._scanlineGenerateVertexRingForCellRow(cellRow, triangleVertices, triangleIndices);\n scanlineTriangulateVertexRing(this._vertexBuffer, ring, finalIndices);\n }\n }\n\n return finalIndices;\n }\n\n /**\n * Takes a triangle and a cell row index, returns a subdivided vertex ring of the intersection of the triangle and the cell row.\n * @param cellRow - Index of the cell row. A cell row of index `i` covert range from `i * granularityCellSize` to `(i + 1) * granularityCellSize`.\n * @param triangleVertices - An array of 6 elements, contains flattened positions of the triangle's vertices: `[v0x, v0y, v1x, v1y, v2x, v2y]`.\n * @param triangleIndices - An array of 3 elements, contains the original indices of the triangle's vertices: `[index0, index1, index2]`.\n * @returns The resulting ring of vertex indices and the index (to the returned ring array) of the leftmost vertex in the ring.\n */\n private _scanlineGenerateVertexRingForCellRow(\n cellRow: number,\n triangleVertices: [number, number, number, number, number, number],\n triangleIndices: [number, number, number]\n ) {\n const cellRowYTop = cellRow * this._granularityCellSize;\n const cellRowYBottom = cellRowYTop + this._granularityCellSize;\n const ring = [];\n\n // Generate the vertex ring\n for (let edgeIndex = 0; edgeIndex < 3; edgeIndex++) {\n // Current edge that will be subdivided: a --> b\n // The remaining vertex of the triangle: c\n const aX = triangleVertices[edgeIndex * 2];\n const aY = triangleVertices[edgeIndex * 2 + 1];\n const bX = triangleVertices[((edgeIndex + 1) * 2) % 6];\n const bY = triangleVertices[((edgeIndex + 1) * 2 + 1) % 6];\n const cX = triangleVertices[((edgeIndex + 2) * 2) % 6];\n const cY = triangleVertices[((edgeIndex + 2) * 2 + 1) % 6];\n // Edge direction\n const dirX = bX - aX;\n const dirY = bY - aY;\n\n // Edges parallel with either axis will need special handling later.\n const isParallelY = dirX === 0;\n const isParallelX = dirY === 0;\n\n // Distance along edge where it enters/exits current cell row,\n // where distance 0 is the edge start point, 1 the endpoint, 0.5 the mid point, etc.\n const tTop = (cellRowYTop - aY) / dirY;\n const tBottom = (cellRowYBottom - aY) / dirY;\n const tEnter = Math.min(tTop, tBottom);\n const tExit = Math.max(tTop, tBottom);\n\n // Determine if edge lies entirely outside this cell row.\n // Check entry and exit points, or if edge is parallel with X, check its Y coordinate.\n if ((!isParallelX && (tEnter >= 1 || tExit <= 0)) ||\n (isParallelX && (aY < cellRowYTop || aY > cellRowYBottom))) {\n // Skip this edge\n // But make sure to add its endpoint vertex if needed.\n if (bY >= cellRowYTop && bY <= cellRowYBottom) {\n // The edge endpoint is withing this row, add it to the ring\n ring.push(triangleIndices[(edgeIndex + 1) % 3]);\n }\n continue;\n }\n\n // Do not add original triangle vertices now, those are handled separately later\n\n // Special case: edge vertex for entry into cell row\n // If edge is parallel with X axis, there is no entry vertex\n if (!isParallelX && tEnter > 0) {\n const x = aX + dirX * tEnter;\n const y = aY + dirY * tEnter;\n ring.push(this._vertexToIndex(x, y));\n }\n\n // The X coordinates of the points where the edge enters/exits the current cell row,\n // or the edge start/endpoint, if the entry/exit happens beyond the edge bounds.\n const enterX = aX + dirX * Math.max(tEnter, 0);\n const exitX = aX + dirX * Math.min(tExit, 1);\n\n // Generate edge interior vertices\n // No need to subdivide (along X) edges that are parallel with Y\n if (!isParallelY) {\n this._generateIntraEdgeVertices(ring, aX, aY, bX, bY, enterX, exitX);\n }\n\n // Special case: edge vertex for exit from cell row\n if (!isParallelX && tExit < 1) {\n const x = aX + dirX * tExit;\n const y = aY + dirY * tExit;\n ring.push(this._vertexToIndex(x, y));\n }\n\n // When to split inter-edge boundary segments?\n // When the boundary doesn't intersect a vertex, its easy. But what if it does?\n\n // a\n // /|\n // / |\n // --c--|--boundary\n // \\ |\n // \\|\n // b\n //\n // Inter-edge region should be generated when processing the a-b edge.\n // This happens fine for the top row, for the bottom row,\n //\n\n // x\n // /|\n // / |\n // --x--x--boundary\n //\n // Edge that lies on boundary should be subdivided in its edge phase.\n // The inter-edge phase will correctly skip it.\n\n // Add endpoint vertex\n if (isParallelX || (bY >= cellRowYTop && bY <= cellRowYBottom)) {\n ring.push(triangleIndices[(edgeIndex + 1) % 3]);\n }\n // Any edge that has endpoint outside this row or on its boundary gets\n // inter-edge vertices.\n // No row boundary to split for edges parallel with X\n if (!isParallelX && (bY <= cellRowYTop || bY >= cellRowYBottom)) {\n this._generateInterEdgeVertices(ring, aX, aY, bX, bY, cX, cY,\n exitX, cellRowYTop, cellRowYBottom);\n }\n }\n\n return ring;\n }\n\n /**\n * Generates ring vertices along an edge A-\\>B, but only in the part that intersects a given cell row.\n * Does not handle adding edge endpoint vertices or edge cell row enter/exit vertices.\n * @param ring - Ordered array of vertex indices for the constructed ring. New indices are placed here.\n * @param enterX - The X coordinate of the point where edge A-\\>B enters the current cell row.\n * @param exitX - The X coordinate of the point where edge A-\\>B exits the current cell row.\n */\n private _generateIntraEdgeVertices(\n ring: Array,\n aX: number,\n aY: number,\n bX: number,\n bY: number,\n enterX: number,\n exitX: number\n ): void {\n const dirX = bX - aX;\n const dirY = bY - aY;\n const isParallelX = dirY === 0;\n\n const leftX = isParallelX ? Math.min(aX, bX) : Math.min(enterX, exitX);\n const rightX = isParallelX ? Math.max(aX, bX) : Math.max(enterX, exitX);\n\n const edgeSubdivisionLeftCellX = Math.floor(leftX / this._granularityCellSize) + 1;\n const edgeSubdivisionRightCellX = Math.ceil(rightX / this._granularityCellSize) - 1;\n\n const isEdgeLeftToRight = isParallelX ? (aX < bX) : (enterX < exitX);\n if (isEdgeLeftToRight) {\n // Left to right\n for (let cellX = edgeSubdivisionLeftCellX; cellX <= edgeSubdivisionRightCellX; cellX++) {\n const x = cellX * this._granularityCellSize;\n const y = aY + dirY * (x - aX) / dirX;\n ring.push(this._vertexToIndex(x, y));\n }\n } else {\n // Right to left\n for (let cellX = edgeSubdivisionRightCellX; cellX >= edgeSubdivisionLeftCellX; cellX--) {\n const x = cellX * this._granularityCellSize;\n const y = aY + dirY * (x - aX) / dirX;\n ring.push(this._vertexToIndex(x, y));\n }\n }\n }\n\n /**\n * Generates ring vertices along cell border.\n * Call when processing an edge A-\\>B that exits the current row (B lies outside the current row).\n * Generates vertices along the cell edge between the exit point from cell row\n * of edge A-\\>B and entry of edge B-\\>C, or entry of C-\\>A if both A and C lie outside the cell row.\n * Does not handle adding edge endpoint vertices or edge cell row enter/exit vertices.\n * @param ring - Ordered array of vertex indices for the constructed ring. New indices are placed here.\n * @param exitX - The X coordinate of the point where edge A-\\>B exits the current cell row.\n * @param cellRowYTop - The current cell row top Y coordinate.\n * @param cellRowYBottom - The current cell row bottom Y coordinate.\n */\n private _generateInterEdgeVertices(\n ring: Array,\n aX: number,\n aY: number,\n bX: number,\n bY: number,\n cX: number,\n cY: number,\n exitX: number,\n cellRowYTop: number,\n cellRowYBottom: number\n ): void {\n const dirY = bY - aY;\n\n const dir2X = cX - bX;\n const dir2Y = cY - bY;\n const t2Top = (cellRowYTop - bY) / dir2Y;\n const t2Bottom = (cellRowYBottom - bY) / dir2Y;\n // The distance along edge B->C where it enters/exits the current cell row,\n // where distance 0 is B, 1 is C, 0.5 is the edge midpoint, etc.\n const t2Enter = Math.min(t2Top, t2Bottom);\n const t2Exit = Math.max(t2Top, t2Bottom);\n const enter2X = bX + dir2X * t2Enter;\n let boundarySubdivisionLeftCellX = Math.floor(Math.min(enter2X, exitX) / this._granularityCellSize) + 1;\n let boundarySubdivisionRightCellX = Math.ceil(Math.max(enter2X, exitX) / this._granularityCellSize) - 1;\n let isBoundaryLeftToRight = exitX < enter2X;\n\n const isParallelX2 = dir2Y === 0;\n\n if (isParallelX2 && (cY === cellRowYTop || cY === cellRowYBottom)) {\n // Special case when edge b->c that lies on the cell boundary.\n // Do not generate any inter-edge vertices in this case,\n // this b->c edge gets subdivided when it is itself processed.\n return;\n }\n\n if (isParallelX2 || t2Enter >= 1 || t2Exit <= 0) {\n // The next edge (b->c) lies entirely outside this cell row\n // Find entry point for the edge after that instead (c->a)\n\n // There may be at most 1 edge that is parallel to X in a triangle.\n // The main \"a->b\" edge must not be parallel at this point in the code.\n // We know that \"a->b\" crosses the current cell row boundary, such that point \"b\" is beyond the boundary.\n // If \"b->c\" is parallel to X, then \"c->a\" must not be parallel and must cross the cell row boundary back:\n // a\n // |\\\n // -----|-\\--cell row boundary----\n // | \\\n // c---b\n // If \"b->c\" is not parallel to X and doesn't cross the cell row boundary,\n // then c->a must also not be parallel to X and must cross the cell boundary back,\n // since points \"a\" and \"c\" lie on different sides of the boundary and on different Y coordinates.\n //\n // Thus there is no need for \"parallel with X\" checks inside this condition branch.\n\n // Compute the X coordinate where edge C->A enters the current cell row\n const dir3X = aX - cX;\n const dir3Y = aY - cY;\n const t3Top = (cellRowYTop - cY) / dir3Y;\n const t3Bottom = (cellRowYBottom - cY) / dir3Y;\n const t3Enter = Math.min(t3Top, t3Bottom);\n const enter3X = cX + dir3X * t3Enter;\n\n boundarySubdivisionLeftCellX = Math.floor(Math.min(enter3X, exitX) / this._granularityCellSize) + 1;\n boundarySubdivisionRightCellX = Math.ceil(Math.max(enter3X, exitX) / this._granularityCellSize) - 1;\n isBoundaryLeftToRight = exitX < enter3X;\n }\n\n const boundaryY = dirY > 0 ? cellRowYBottom : cellRowYTop;\n if (isBoundaryLeftToRight) {\n // Left to right\n for (let cellX = boundarySubdivisionLeftCellX; cellX <= boundarySubdivisionRightCellX; cellX++) {\n const x = cellX * this._granularityCellSize;\n ring.push(this._vertexToIndex(x, boundaryY));\n }\n } else {\n // Right to left\n for (let cellX = boundarySubdivisionRightCellX; cellX >= boundarySubdivisionLeftCellX; cellX--) {\n const x = cellX * this._granularityCellSize;\n ring.push(this._vertexToIndex(x, boundaryY));\n }\n }\n }\n\n /**\n * Generates an outline for a given polygon, returns a list of arrays of line indices.\n */\n private _generateOutline(polygon: Array>): Array> {\n const subdividedLines: Array> = [];\n for (const ring of polygon) {\n const line = subdivideVertexLine(ring, this._granularity, true);\n const pathIndices = this._pointArrayToIndices(line);\n // Points returned by subdivideVertexLine are \"path\" waypoints,\n // for example with indices 0 1 2 3 0.\n // We need list of individual line segments for rendering,\n // for example 0, 1, 1, 2, 2, 3, 3, 0.\n const lineIndices: Array = [];\n for (let i = 1; i < pathIndices.length; i++) {\n lineIndices.push(pathIndices[i - 1]);\n lineIndices.push(pathIndices[i]);\n }\n subdividedLines.push(lineIndices);\n }\n return subdividedLines;\n }\n\n /**\n * Adds pole geometry if needed.\n * @param subdividedTriangles - Array of generated triangle indices, new pole geometry is appended here.\n */\n private _handlePoles(subdividedTriangles: Array) {\n // Add pole vertices if the tile is at north/south mercator edge\n let north = false;\n let south = false;\n if (this._canonical) {\n if (this._canonical.y === 0) {\n north = true;\n }\n if (this._canonical.y === (1 << this._canonical.z) - 1) {\n south = true;\n }\n }\n if (north || south) {\n this._fillPoles(subdividedTriangles, north, south);\n }\n }\n\n /**\n * Checks the internal vertex buffer for all vertices that might lie on the special pole coordinates and shifts them by one unit.\n * Use for removing unintended pole vertices that might have been created during subdivision. After calling this function, actual pole vertices can be safely generated.\n */\n private _ensureNoPoleVertices() {\n const flattened = this._vertexBuffer;\n\n for (let i = 0; i < flattened.length; i += 2) {\n const vy = flattened[i + 1];\n if (vy === NORTH_POLE_Y) {\n // Move slightly down\n flattened[i + 1] = NORTH_POLE_Y + 1;\n }\n if (vy === SOUTH_POLE_Y) {\n // Move slightly down\n flattened[i + 1] = SOUTH_POLE_Y - 1;\n }\n }\n }\n\n /**\n * Generates a quad from an edge to a pole with the correct winding order.\n * Helper function used inside {@link _fillPoles}.\n * @param indices - Index array into which the geometry is generated.\n * @param i0 - Index of the first edge vertex.\n * @param i1 - Index of the second edge vertex.\n * @param v0x - X coordinate of the first edge vertex.\n * @param v1x - X coordinate of the second edge vertex.\n * @param poleY - The Y coordinate of the desired pole (NORTH_POLE_Y or SOUTH_POLE_Y).\n */\n private _generatePoleQuad(indices, i0, i1, v0x, v1x, poleY): void {\n const flip = (v0x > v1x) !== (poleY === NORTH_POLE_Y);\n\n if (flip) {\n indices.push(i0);\n indices.push(i1);\n indices.push(this._vertexToIndex(v0x, poleY));\n\n indices.push(i1);\n indices.push(this._vertexToIndex(v1x, poleY));\n indices.push(this._vertexToIndex(v0x, poleY));\n } else {\n indices.push(i1);\n indices.push(i0);\n indices.push(this._vertexToIndex(v0x, poleY));\n\n indices.push(this._vertexToIndex(v1x, poleY));\n indices.push(i1);\n indices.push(this._vertexToIndex(v0x, poleY));\n }\n }\n\n /**\n * Detects edges that border the north or south tile edge\n * and adds triangles that extend those edges to the poles.\n * Only run this function on tiles that border the poles.\n * Assumes that supplied geometry is clipped to the inclusive range of 0..EXTENT.\n * Mutates the supplies vertex and index arrays.\n * @param indices - Triangle indices. This array is appended with new primitives.\n * @param north - Whether to generate geometry for the north pole.\n * @param south - Whether to generate geometry for the south pole.\n */\n private _fillPoles(indices: Array, north: boolean, south: boolean): void {\n const flattened = this._vertexBuffer;\n\n const northEdge = 0;\n const southEdge = EXTENT;\n\n const numIndices = indices.length;\n for (let primitiveIndex = 2; primitiveIndex < numIndices; primitiveIndex += 3) {\n const i0 = indices[primitiveIndex - 2];\n const i1 = indices[primitiveIndex - 1];\n const i2 = indices[primitiveIndex];\n const v0x = flattened[i0 * 2];\n const v0y = flattened[i0 * 2 + 1];\n const v1x = flattened[i1 * 2];\n const v1y = flattened[i1 * 2 + 1];\n const v2x = flattened[i2 * 2];\n const v2y = flattened[i2 * 2 + 1];\n\n if (north) {\n if (v0y === northEdge && v1y === northEdge) {\n this._generatePoleQuad(indices, i0, i1, v0x, v1x, NORTH_POLE_Y);\n }\n if (v1y === northEdge && v2y === northEdge) {\n this._generatePoleQuad(indices, i1, i2, v1x, v2x, NORTH_POLE_Y);\n }\n if (v2y === northEdge && v0y === northEdge) {\n this._generatePoleQuad(indices, i2, i0, v2x, v0x, NORTH_POLE_Y);\n }\n }\n if (south) {\n if (v0y === southEdge && v1y === southEdge) {\n this._generatePoleQuad(indices, i0, i1, v0x, v1x, SOUTH_POLE_Y);\n }\n if (v1y === southEdge && v2y === southEdge) {\n this._generatePoleQuad(indices, i1, i2, v1x, v2x, SOUTH_POLE_Y);\n }\n if (v2y === southEdge && v0y === southEdge) {\n this._generatePoleQuad(indices, i2, i0, v2x, v0x, SOUTH_POLE_Y);\n }\n }\n }\n }\n\n /**\n * Adds all vertices in the supplied flattened vertex buffer into the internal vertex buffer.\n */\n private _initializeVertices(flattened: Array) {\n for (let i = 0; i < flattened.length; i += 2) {\n this._vertexToIndex(flattened[i], flattened[i + 1]);\n }\n }\n\n /**\n * Subdivides an input mesh. Imagine a regular square grid with the target granularity overlaid over the mesh - this is the subdivision's result.\n * Assumes a mesh of tile features - vertex coordinates are integers, visible range where subdivision happens is 0..8192.\n * @param polygon - The input polygon, specified as a list of vertex rings.\n * @param generateOutlineLines - When true, also generates line indices for outline of the supplied polygon.\n * @returns Vertex and index buffers with subdivision applied.\n */\n public subdividePolygonInternal(polygon: Array>, generateOutlineLines: boolean): SubdivisionResult {\n if (this._used) {\n throw new Error('Subdivision: multiple use not allowed.');\n }\n this._used = true;\n\n // Initialize the vertex dictionary with input vertices since we will use all of them anyway\n const {flattened, holeIndices} = flatten(polygon);\n this._initializeVertices(flattened);\n\n // Subdivide triangles\n let subdividedTriangles: Array;\n try {\n // At this point this._finalVertices is just flattened polygon points\n const earcutResult = earcut(flattened, holeIndices);\n const cut = this._convertIndices(flattened, earcutResult);\n subdividedTriangles = this._subdivideTrianglesScanline(cut);\n } catch (e) {\n console.error(e);\n }\n\n // Subdivide lines\n let subdividedLines: Array> = [];\n if (generateOutlineLines) {\n subdividedLines = this._generateOutline(polygon);\n }\n\n // Ensure no vertex has the special value used for pole vertices\n this._ensureNoPoleVertices();\n\n // Add pole geometry if needed\n this._handlePoles(subdividedTriangles);\n\n return {\n verticesFlattened: this._vertexBuffer,\n indicesTriangles: subdividedTriangles,\n indicesLineList: subdividedLines,\n };\n }\n\n /**\n * Sometimes the supplies vertex and index array has duplicate vertices - same coordinates that are referenced by multiple different indices.\n * That is not allowed for purposes of subdivision, duplicates are removed in `this.initializeVertices`.\n * This function converts the original index array that indexes into the original vertex array with duplicates\n * into an index array that indexes into `this._finalVertices`.\n * @param vertices - Flattened vertex array used by the old indices. This may contain duplicate vertices.\n * @param oldIndices - Indices into the old vertex array.\n * @returns Indices transformed so that they are valid indices into `this._finalVertices` (with duplicates removed).\n */\n private _convertIndices(vertices: Array, oldIndices: Array): Array {\n const newIndices = [];\n for (let i = 0; i < oldIndices.length; i++) {\n const x = vertices[oldIndices[i] * 2];\n const y = vertices[oldIndices[i] * 2 + 1];\n newIndices.push(this._vertexToIndex(x, y));\n }\n return newIndices;\n }\n\n /**\n * Converts an array of points into an array of indices into the internal vertex buffer (`_finalVertices`).\n */\n private _pointArrayToIndices(array: Array): Array {\n const indices = [];\n for (let i = 0; i < array.length; i++) {\n const p = array[i];\n indices.push(this._vertexToIndex(p.x, p.y));\n }\n return indices;\n }\n}\n\n/**\n * Subdivides a polygon to a given granularity. Intended for preprocessing geometry for the 'fill' and 'fill-extrusion' layer types.\n * All returned triangles have the counter-clockwise winding order.\n * @param polygon - An array of point rings that specify the polygon. The first ring is the polygon exterior, all subsequent rings form holes inside the first ring.\n * @param canonical - The canonical tile ID of the tile this polygon belongs to. Needed for generating special geometry for tiles that border the poles.\n * @param granularity - The subdivision granularity. If we assume tile EXTENT=8192, then a granularity of 2 will result in geometry being \"cut\" on each axis\n * divisible by 4096 (including outside the tile range, so -8192, -4096, or 12288...), granularity of 8 on axes divisible by 1024 and so on.\n * Granularity of 1 or lower results in *no* subdivision.\n * @param generateOutlineLines - When true, also generates index arrays for subdivided lines that form the outline of the supplied polygon. True by default.\n * @returns An object that contains the generated vertex array, triangle index array and, if specified, line index arrays.\n */\nexport function subdividePolygon(polygon: Array>, canonical: CanonicalTileID, granularity: number, generateOutlineLines: boolean = true): SubdivisionResult {\n const subdivider = new Subdivider(granularity, canonical);\n return subdivider.subdividePolygonInternal(polygon, generateOutlineLines);\n}\n\n/**\n * Subdivides a line represented by an array of points. Mainly intended for preprocessing geometry for the 'line' layer type.\n * Assumes a line segment between each two consecutive points in the array.\n * Does not assume a line segment from last point to first point, unless `isRing` is set to `true`.\n * For example, an array of 4 points describes exactly 3 line segments.\n * @param linePoints - An array of points describing the line segments.\n * @param granularity - Subdivision granularity.\n * @param isRing - When true, an additional line segment is assumed to exist between the input array's last and first point.\n * @returns A new array of points of the subdivided line segments. The array may contain some of the original Point objects. If `isRing` is set to `true`, then this also includes the (subdivided) segment from the last point of the input array to the first point.\n *\n * @example\n * ```ts\n * const result = subdivideVertexLine([\n * new Point(0, 0),\n * new Point(8, 0),\n * new Point(0, 8),\n * ], EXTENT / 4, false);\n * // Results in an array of points with these (x, y) coordinates:\n * // 0, 0\n * // 4, 0\n * // 8, 0\n * // 4, 4\n * // 0, 8\n * ```\n *\n * @example\n * ```ts\n * const result = subdivideVertexLine([\n * new Point(0, 0),\n * new Point(8, 0),\n * new Point(0, 8),\n * ], EXTENT / 4, true);\n * // Results in an array of points with these (x, y) coordinates:\n * // 0, 0\n * // 4, 0\n * // 8, 0\n * // 4, 4\n * // 0, 8\n * // 0, 4\n * // 0, 0\n * ```\n */\nexport function subdivideVertexLine(linePoints: Array, granularity: number, isRing: boolean = false): Array {\n if (!linePoints || linePoints.length < 1) {\n return [];\n }\n\n if (linePoints.length < 2) {\n return [];\n }\n\n // Generate an extra line segment between the input array's first and last points,\n // but only if isRing=true AND the first and last points actually differ.\n const first = linePoints[0];\n const last = linePoints[linePoints.length - 1];\n const addLastToFirstSegment = isRing && (first.x !== last.x || first.y !== last.y);\n\n if (granularity < 2) {\n if (addLastToFirstSegment) {\n return [...linePoints, linePoints[0]];\n } else {\n return [...linePoints];\n }\n }\n\n const cellSize = Math.floor(EXTENT / granularity);\n const finalLineVertices: Array = [];\n\n finalLineVertices.push(new Point(linePoints[0].x, linePoints[0].y));\n\n // Iterate over all input lines\n const totalPoints = linePoints.length;\n const lastIndex = addLastToFirstSegment ? totalPoints : (totalPoints - 1);\n for (let pointIndex = 0; pointIndex < lastIndex; pointIndex++) {\n const linePoint0 = linePoints[pointIndex];\n const linePoint1 = pointIndex < (totalPoints - 1) ? linePoints[pointIndex + 1] : linePoints[0];\n const lineVertex0x = linePoint0.x;\n const lineVertex0y = linePoint0.y;\n const lineVertex1x = linePoint1.x;\n const lineVertex1y = linePoint1.y;\n\n const dirXnonZero = lineVertex0x !== lineVertex1x;\n const dirYnonZero = lineVertex0y !== lineVertex1y;\n\n if (!dirXnonZero && !dirYnonZero) {\n continue;\n }\n\n const dirX = lineVertex1x - lineVertex0x;\n const dirY = lineVertex1y - lineVertex0y;\n const absDirX = Math.abs(dirX);\n const absDirY = Math.abs(dirY);\n\n let lastPointX = lineVertex0x;\n let lastPointY = lineVertex0y;\n\n // Walk along the line segment from start to end. In every step,\n // find out the distance from start until the line intersects either the X-parallel or Y-parallel subdivision axis.\n // Pick the closer intersection, add it to the final line points and consider that point the new start of the line.\n // But also make sure the intersection point does not lie beyond the end of the line.\n // If none of the intersection points is closer than line end, add the endpoint to the final line and break the loop.\n\n while (true) {\n const nextBoundaryX = dirX > 0 ?\n ((Math.floor(lastPointX / cellSize) + 1) * cellSize) :\n ((Math.ceil(lastPointX / cellSize) - 1) * cellSize);\n const nextBoundaryY = dirY > 0 ?\n ((Math.floor(lastPointY / cellSize) + 1) * cellSize) :\n ((Math.ceil(lastPointY / cellSize) - 1) * cellSize);\n const axisDistanceToBoundaryX = Math.abs(lastPointX - nextBoundaryX);\n const axisDistanceToBoundaryY = Math.abs(lastPointY - nextBoundaryY);\n\n const axisDistanceToEndX = Math.abs(lastPointX - lineVertex1x);\n const axisDistanceToEndY = Math.abs(lastPointY - lineVertex1y);\n\n const realDistanceToBoundaryX = dirXnonZero ? axisDistanceToBoundaryX / absDirX : Number.POSITIVE_INFINITY;\n const realDistanceToBoundaryY = dirYnonZero ? axisDistanceToBoundaryY / absDirY : Number.POSITIVE_INFINITY;\n\n if ((axisDistanceToEndX <= axisDistanceToBoundaryX || !dirXnonZero) &&\n (axisDistanceToEndY <= axisDistanceToBoundaryY || !dirYnonZero)) {\n break;\n }\n\n if ((realDistanceToBoundaryX < realDistanceToBoundaryY && dirXnonZero) || !dirYnonZero) {\n // We hit the X cell boundary first\n // Always consider the X cell hit if Y dir is zero\n lastPointX = nextBoundaryX;\n lastPointY = lastPointY + dirY * realDistanceToBoundaryX;\n const next = new Point(lastPointX, Math.round(lastPointY));\n\n // Do not add the next vertex if it is equal to the last added vertex\n if (finalLineVertices[finalLineVertices.length - 1].x !== next.x ||\n finalLineVertices[finalLineVertices.length - 1].y !== next.y) {\n finalLineVertices.push(next);\n }\n } else {\n lastPointX = lastPointX + dirX * realDistanceToBoundaryY;\n lastPointY = nextBoundaryY;\n const next = new Point(Math.round(lastPointX), lastPointY);\n\n if (finalLineVertices[finalLineVertices.length - 1].x !== next.x ||\n finalLineVertices[finalLineVertices.length - 1].y !== next.y) {\n finalLineVertices.push(next);\n }\n }\n }\n\n const last = new Point(lineVertex1x, lineVertex1y);\n if (finalLineVertices[finalLineVertices.length - 1].x !== last.x ||\n finalLineVertices[finalLineVertices.length - 1].y !== last.y) {\n finalLineVertices.push(last);\n }\n }\n\n return finalLineVertices;\n}\n\n/**\n * Takes a polygon as an array of point rings, returns a flattened array of the X,Y coordinates of these points.\n * Also creates an array of hole indices. Both returned arrays are required for `earcut`.\n */\nfunction flatten(polygon: Array>): {\n flattened: Array;\n holeIndices: Array;\n} {\n const holeIndices = [];\n const flattened = [];\n\n for (const ring of polygon) {\n if (ring.length === 0) {\n continue;\n }\n\n if (ring !== polygon[0]) {\n holeIndices.push(flattened.length / 2);\n }\n\n for (let i = 0; i < ring.length; i++) {\n flattened.push(ring[i].x);\n flattened.push(ring[i].y);\n }\n }\n\n return {\n flattened,\n holeIndices\n };\n}\n\n/**\n * Returns a new array of indices where all triangles have the counter-clockwise winding order.\n * @param flattened - Flattened vertex buffer.\n * @param indices - Triangle indices.\n */\nexport function fixWindingOrder(flattened: Array, indices: Array): Array {\n const corrected = [];\n\n for (let i = 0; i < indices.length; i += 3) {\n const i0 = indices[i];\n const i1 = indices[i + 1];\n const i2 = indices[i + 2];\n\n const v0x = flattened[i0 * 2];\n const v0y = flattened[i0 * 2 + 1];\n const v1x = flattened[i1 * 2];\n const v1y = flattened[i1 * 2 + 1];\n const v2x = flattened[i2 * 2];\n const v2y = flattened[i2 * 2 + 1];\n\n const e0x = v1x - v0x;\n const e0y = v1y - v0y;\n const e1x = v2x - v0x;\n const e1y = v2y - v0y;\n\n const crossProduct = e0x * e1y - e0y * e1x;\n\n if (crossProduct > 0) {\n // Flip\n corrected.push(i0);\n corrected.push(i2);\n corrected.push(i1);\n } else {\n // Don't flip\n corrected.push(i0);\n corrected.push(i1);\n corrected.push(i2);\n }\n }\n\n return corrected;\n}\n\n/**\n * Triangulates a ring of vertex indices. Appends to the supplied array of final triangle indices.\n * @param vertexBuffer - Flattened vertex coordinate array.\n * @param ring - Ordered ring of vertex indices to triangulate.\n * @param leftmostIndex - The index of the leftmost vertex in the supplied ring.\n * @param finalIndices - Array of final triangle indices, into where the resulting triangles are appended.\n */\nexport function scanlineTriangulateVertexRing(vertexBuffer: Array, ring: Array, finalIndices: Array): void {\n // Triangulate the ring\n // It is guaranteed to be convex and ordered\n if (ring.length === 0) {\n throw new Error('Subdivision vertex ring is empty.');\n }\n\n // Find the leftmost vertex in the ring\n let leftmostIndex = 0;\n let leftmostX = vertexBuffer[ring[0] * 2];\n for (let i = 1; i < ring.length; i++) {\n const x = vertexBuffer[ring[i] * 2];\n if (x < leftmostX) {\n leftmostX = x;\n leftmostIndex = i;\n }\n }\n\n // Traverse the ring in both directions from the leftmost vertex\n // Assume ring is in CCW order (to produce CCW triangles)\n const ringVertexLength = ring.length;\n let lastEdgeA = leftmostIndex;\n let lastEdgeB = (lastEdgeA + 1) % ringVertexLength;\n\n while (true) {\n const candidateIndexA = (lastEdgeA - 1) >= 0 ? (lastEdgeA - 1) : (ringVertexLength - 1);\n const candidateIndexB = (lastEdgeB + 1) % ringVertexLength;\n\n // Pick candidate, move edge\n const candidateAx = vertexBuffer[ring[candidateIndexA] * 2];\n const candidateAy = vertexBuffer[ring[candidateIndexA] * 2 + 1];\n const candidateBx = vertexBuffer[ring[candidateIndexB] * 2];\n const candidateBy = vertexBuffer[ring[candidateIndexB] * 2 + 1];\n const lastEdgeAx = vertexBuffer[ring[lastEdgeA] * 2];\n const lastEdgeAy = vertexBuffer[ring[lastEdgeA] * 2 + 1];\n const lastEdgeBx = vertexBuffer[ring[lastEdgeB] * 2];\n const lastEdgeBy = vertexBuffer[ring[lastEdgeB] * 2 + 1];\n\n let pickA = false;\n\n if (candidateAx < candidateBx) {\n pickA = true;\n } else if (candidateAx > candidateBx) {\n pickA = false;\n } else {\n // Pick the candidate that is more \"right\" of the last edge's line\n const ex = lastEdgeBx - lastEdgeAx;\n const ey = lastEdgeBy - lastEdgeAy;\n const nx = ey;\n const ny = -ex;\n const sign = (lastEdgeAy < lastEdgeBy) ? 1 : -1;\n // dot( (candidateA <-- lastEdgeA), normal )\n const aRight = ((candidateAx - lastEdgeAx) * nx + (candidateAy - lastEdgeAy) * ny) * sign;\n // dot( (candidateB <-- lastEdgeA), normal )\n const bRight = ((candidateBx - lastEdgeAx) * nx + (candidateBy - lastEdgeAy) * ny) * sign;\n if (aRight > bRight) {\n pickA = true;\n }\n }\n\n if (pickA) {\n // Pick candidate A\n const c = ring[candidateIndexA];\n const a = ring[lastEdgeA];\n const b = ring[lastEdgeB];\n if (c !== a && c !== b && a !== b) {\n finalIndices.push(b, a, c);\n }\n lastEdgeA--;\n if (lastEdgeA < 0) {\n lastEdgeA = ringVertexLength - 1;\n }\n } else {\n // Pick candidate B\n const c = ring[candidateIndexB];\n const a = ring[lastEdgeA];\n const b = ring[lastEdgeB];\n if (c !== a && c !== b && a !== b) {\n finalIndices.push(b, a, c);\n }\n lastEdgeB++;\n if (lastEdgeB >= ringVertexLength) {\n lastEdgeB = 0;\n }\n }\n\n if (candidateIndexA === candidateIndexB) {\n break; // We ran out of ring vertices\n }\n }\n}\n","import {type LineIndexArray, type TriangleIndexArray} from '../data/array_types.g';\nimport {type Segment, SegmentVector} from '../data/segment';\nimport {type StructArray} from '../util/struct_array';\n\n/**\n * This function will take any \"mesh\" and fill in into vertex buffers, breaking it up into multiple drawcalls as needed\n * if too many (\\>65535) vertices are used.\n * This function is mainly intended for use with subdivided geometry, since sometimes subdivision might generate\n * more vertices than what fits into 16 bit indices.\n *\n * Accepts a triangle mesh, optionally with a line list (for fill outlines) as well. The triangle and line segments are expected to share a single vertex buffer.\n *\n * Mutates the provided `segmentsTriangles` and `segmentsLines` SegmentVectors,\n * `vertexArray`, `triangleIndexArray` and optionally `lineIndexArray`.\n * Does not mutate the input `flattened` vertices, `triangleIndices` and `lineList`.\n * @param addVertex - A function for adding a new vertex into `vertexArray`. We might sometimes want to add more values per vertex than just X and Y coordinates, which can be handled in this function.\n * @param segmentsTriangles - The segment array for triangle draw calls. New segments will be placed here.\n * @param vertexArray - The vertex array into which new vertices are placed by the provided `addVertex` function.\n * @param triangleIndexArray - Index array for drawing triangles. New triangle indices are placed here.\n * @param flattened - The input flattened array or vertex coordinates.\n * @param triangleIndices - Triangle indices into `flattened`.\n * @param segmentsLines - Segment array for line draw calls. New segments will be placed here. Only needed if the mesh also contains lines.\n * @param lineIndexArray - Index array for drawing lines. New triangle indices are placed here. Only needed if the mesh also contains lines.\n * @param lineList - Line indices into `flattened`. Only needed if the mesh also contains lines.\n */\nexport function fillLargeMeshArrays(\n addVertex: (x: number, y: number) => void,\n segmentsTriangles: SegmentVector,\n vertexArray: StructArray,\n triangleIndexArray: TriangleIndexArray,\n flattened: Array,\n triangleIndices: Array,\n segmentsLines?: SegmentVector,\n lineIndexArray?: LineIndexArray,\n lineList?: Array>) {\n\n const numVertices = flattened.length / 2;\n const hasLines = segmentsLines && lineIndexArray && lineList;\n\n if (numVertices < SegmentVector.MAX_VERTEX_ARRAY_LENGTH) {\n // The fast path - no segmentation needed\n const triangleSegment = segmentsTriangles.prepareSegment(numVertices, vertexArray, triangleIndexArray);\n const triangleIndex = triangleSegment.vertexLength;\n\n for (let i = 0; i < triangleIndices.length; i += 3) {\n triangleIndexArray.emplaceBack(\n triangleIndex + triangleIndices[i],\n triangleIndex + triangleIndices[i + 1],\n triangleIndex + triangleIndices[i + 2]);\n }\n\n triangleSegment.vertexLength += numVertices;\n triangleSegment.primitiveLength += triangleIndices.length / 3;\n\n let lineIndicesStart: number;\n let lineSegment: Segment;\n\n if (hasLines) {\n // Note that segment creation must happen *before* we add vertices into the vertex buffer\n lineSegment = segmentsLines.prepareSegment(numVertices, vertexArray, lineIndexArray);\n lineIndicesStart = lineSegment.vertexLength;\n lineSegment.vertexLength += numVertices;\n }\n\n // Add vertices into vertex buffer\n for (let i = 0; i < flattened.length; i += 2) {\n addVertex(flattened[i], flattened[i + 1]);\n }\n\n if (hasLines) {\n for (let listIndex = 0; listIndex < lineList.length; listIndex++) {\n const lineIndices = lineList[listIndex];\n\n for (let i = 1; i < lineIndices.length; i += 2) {\n lineIndexArray.emplaceBack(\n lineIndicesStart + lineIndices[i - 1],\n lineIndicesStart + lineIndices[i]);\n }\n\n lineSegment.primitiveLength += lineIndices.length / 2;\n }\n }\n } else {\n // Assumption: the incoming triangle indices use vertices in roughly linear order,\n // for example a grid of quads where both vertices and quads are created row by row would satisfy this.\n // Some completely random arbitrary vertex/triangle order would not.\n // Thus, if we encounter a vertex that doesn't fit into MAX_VERTEX_ARRAY_LENGTH,\n // we can just stop appending into the old segment and start a new segment and only append to the new segment,\n // copying vertices that are already present in the old segment into the new segment if needed,\n // because there will not be too many of such vertices.\n\n // Normally, (out)lines share the same vertex buffer as triangles, but since we need to somehow split it into several drawcalls,\n // it is easier to just consider (out)lines separately and duplicate their vertices.\n\n fillSegmentsTriangles(segmentsTriangles, vertexArray, triangleIndexArray, flattened, triangleIndices, addVertex);\n if (hasLines) {\n fillSegmentsLines(segmentsLines, vertexArray, lineIndexArray, flattened, lineList, addVertex);\n }\n\n // Triangles and lines share the same vertex buffer, and they usually also share the same vertices.\n // But this method might create the vertices for triangles and for lines separately, and thus increasing the vertex count\n // of the triangle and line segments by different amounts.\n\n // The non-splitting fillLargeMeshArrays logic (and old fill-bucket logic) assumes the vertex counts to be the same,\n // and forcing both SegmentVectors to return a new segment upon next prepare call satisfies this.\n segmentsTriangles.forceNewSegmentOnNextPrepare();\n segmentsLines?.forceNewSegmentOnNextPrepare();\n }\n}\n\n/**\n * Determines the new index of a vertex given by its old index.\n * @param actualVertexIndices - Array that maps the old index of a given vertex to a new index in the final vertex buffer.\n * @param flattened - Old vertex buffer.\n * @param addVertex - Function for creating a new vertex in the final vertex buffer.\n * @param totalVerticesCreated - Reference to an int holding how many vertices were added to the final vertex buffer.\n * @param oldIndex - The old index of the desired vertex.\n * @param needsCopy - Whether to duplicate the desired vertex in the final vertex buffer.\n * @param segment - The current segment.\n * @returns Index of the vertex in the final vertex array.\n */\nfunction copyOrReuseVertex(\n actualVertexIndices: Array,\n flattened: Array,\n addVertex: (x: number, y: number) => void,\n totalVerticesCreated: {count: number},\n oldIndex: number,\n needsCopy: boolean,\n segment: Segment\n): number {\n if (needsCopy) {\n const newIndex = totalVerticesCreated.count;\n addVertex(flattened[oldIndex * 2], flattened[oldIndex * 2 + 1]);\n actualVertexIndices[oldIndex] = totalVerticesCreated.count;\n totalVerticesCreated.count++;\n segment.vertexLength++;\n return newIndex;\n } else {\n return actualVertexIndices[oldIndex];\n }\n}\n\nfunction fillSegmentsTriangles(\n segmentsTriangles: SegmentVector,\n vertexArray: StructArray,\n triangleIndexArray: TriangleIndexArray,\n flattened: Array,\n triangleIndices: Array,\n addVertex: (x: number, y: number) => void\n) {\n // Array, or rather a map of [vertex index in the original data] -> index of the latest copy of this vertex in the final vertex buffer.\n const actualVertexIndices: Array = [];\n for (let i = 0; i < flattened.length / 2; i++) {\n actualVertexIndices.push(-1);\n }\n\n const totalVerticesCreated = {count: 0};\n\n let currentSegmentCutoff = 0;\n let segment = segmentsTriangles.getOrCreateLatestSegment(vertexArray, triangleIndexArray);\n let baseVertex = segment.vertexLength;\n\n for (let primitiveEndIndex = 2; primitiveEndIndex < triangleIndices.length; primitiveEndIndex += 3) {\n const i0 = triangleIndices[primitiveEndIndex - 2];\n const i1 = triangleIndices[primitiveEndIndex - 1];\n const i2 = triangleIndices[primitiveEndIndex];\n\n let i0needsVertexCopy = actualVertexIndices[i0] < currentSegmentCutoff;\n let i1needsVertexCopy = actualVertexIndices[i1] < currentSegmentCutoff;\n let i2needsVertexCopy = actualVertexIndices[i2] < currentSegmentCutoff;\n\n const vertexCopyCount = (i0needsVertexCopy ? 1 : 0) + (i1needsVertexCopy ? 1 : 0) + (i2needsVertexCopy ? 1 : 0);\n\n // Will needed vertex copies fit into this segment?\n if (segment.vertexLength + vertexCopyCount > SegmentVector.MAX_VERTEX_ARRAY_LENGTH) {\n // Break up into a new segment if not.\n segment = segmentsTriangles.createNewSegment(vertexArray, triangleIndexArray);\n currentSegmentCutoff = totalVerticesCreated.count;\n i0needsVertexCopy = true;\n i1needsVertexCopy = true;\n i2needsVertexCopy = true;\n baseVertex = 0;\n }\n\n const actualIndex0 = copyOrReuseVertex(\n actualVertexIndices, flattened, addVertex, totalVerticesCreated,\n i0, i0needsVertexCopy, segment);\n const actualIndex1 = copyOrReuseVertex(\n actualVertexIndices, flattened, addVertex, totalVerticesCreated,\n i1, i1needsVertexCopy, segment);\n const actualIndex2 = copyOrReuseVertex(\n actualVertexIndices, flattened, addVertex, totalVerticesCreated,\n i2, i2needsVertexCopy, segment);\n\n triangleIndexArray.emplaceBack(\n baseVertex + actualIndex0 - currentSegmentCutoff,\n baseVertex + actualIndex1 - currentSegmentCutoff,\n baseVertex + actualIndex2 - currentSegmentCutoff\n );\n\n segment.primitiveLength++;\n }\n}\n\nfunction fillSegmentsLines(\n segmentsLines: SegmentVector,\n vertexArray: StructArray,\n lineIndexArray: LineIndexArray,\n flattened: Array,\n lineList: Array>,\n addVertex: (x: number, y: number) => void\n) {\n // Array, or rather a map of [vertex index in the original data] -> index of the latest copy of this vertex in the final vertex buffer.\n const actualVertexIndices: Array = [];\n for (let i = 0; i < flattened.length / 2; i++) {\n actualVertexIndices.push(-1);\n }\n\n const totalVerticesCreated = {count: 0};\n\n let currentSegmentCutoff = 0;\n let segment = segmentsLines.getOrCreateLatestSegment(vertexArray, lineIndexArray);\n let baseVertex = segment.vertexLength;\n\n for (let lineListIndex = 0; lineListIndex < lineList.length; lineListIndex++) {\n const currentLine = lineList[lineListIndex];\n for (let lineVertex = 1; lineVertex < lineList[lineListIndex].length; lineVertex += 2) {\n const i0 = currentLine[lineVertex - 1];\n const i1 = currentLine[lineVertex];\n\n let i0needsVertexCopy = actualVertexIndices[i0] < currentSegmentCutoff;\n let i1needsVertexCopy = actualVertexIndices[i1] < currentSegmentCutoff;\n\n const vertexCopyCount = (i0needsVertexCopy ? 1 : 0) + (i1needsVertexCopy ? 1 : 0);\n\n // Will needed vertex copies fit into this segment?\n if (segment.vertexLength + vertexCopyCount > SegmentVector.MAX_VERTEX_ARRAY_LENGTH) {\n // Break up into a new segment if not.\n segment = segmentsLines.createNewSegment(vertexArray, lineIndexArray);\n currentSegmentCutoff = totalVerticesCreated.count;\n i0needsVertexCopy = true;\n i1needsVertexCopy = true;\n baseVertex = 0;\n }\n\n const actualIndex0 = copyOrReuseVertex(\n actualVertexIndices, flattened, addVertex, totalVerticesCreated,\n i0, i0needsVertexCopy, segment);\n const actualIndex1 = copyOrReuseVertex(\n actualVertexIndices, flattened, addVertex, totalVerticesCreated,\n i1, i1needsVertexCopy, segment);\n\n lineIndexArray.emplaceBack(\n baseVertex + actualIndex0 - currentSegmentCutoff,\n baseVertex + actualIndex1 - currentSegmentCutoff\n );\n\n segment.primitiveLength++;\n }\n }\n}\n","import {FillLayoutArray} from '../array_types.g';\n\nimport {members as layoutAttributes} from './fill_attributes';\nimport {SegmentVector} from '../segment';\nimport {ProgramConfigurationSet} from '../program_configuration';\nimport {LineIndexArray, TriangleIndexArray} from '../index_array_type';\nimport {classifyRings} from '@maplibre/maplibre-gl-style-spec';\nconst EARCUT_MAX_RINGS = 500;\nimport {register} from '../../util/web_worker_transfer';\nimport {hasPattern, addPatternDependencies} from './pattern_bucket_features';\nimport {loadGeometry} from '../load_geometry';\nimport {toEvaluationFeature} from '../evaluation_feature';\nimport {EvaluationParameters} from '../../style/evaluation_parameters';\n\nimport type {CanonicalTileID} from '../../source/tile_id';\nimport type {\n Bucket,\n BucketParameters,\n BucketFeature,\n IndexedFeature,\n PopulateParameters\n} from '../bucket';\nimport type {FillStyleLayer} from '../../style/style_layer/fill_style_layer';\nimport type {Context} from '../../gl/context';\nimport type {IndexBuffer} from '../../gl/index_buffer';\nimport type {VertexBuffer} from '../../gl/vertex_buffer';\nimport type Point from '@mapbox/point-geometry';\nimport type {FeatureStates} from '../../source/source_state';\nimport type {ImagePosition} from '../../render/image_atlas';\nimport type {VectorTileLayer} from '@mapbox/vector-tile';\nimport {subdividePolygon} from '../../render/subdivision';\nimport type {SubdivisionGranularitySetting} from '../../render/subdivision_granularity_settings';\nimport {fillLargeMeshArrays} from '../../render/fill_large_mesh_arrays';\n\nexport class FillBucket implements Bucket {\n index: number;\n zoom: number;\n overscaling: number;\n layers: Array;\n layerIds: Array;\n stateDependentLayers: Array;\n stateDependentLayerIds: Array;\n patternFeatures: Array;\n\n layoutVertexArray: FillLayoutArray;\n layoutVertexBuffer: VertexBuffer;\n\n indexArray: TriangleIndexArray;\n indexBuffer: IndexBuffer;\n\n indexArray2: LineIndexArray;\n indexBuffer2: IndexBuffer;\n\n hasPattern: boolean;\n programConfigurations: ProgramConfigurationSet;\n segments: SegmentVector;\n segments2: SegmentVector;\n uploaded: boolean;\n\n constructor(options: BucketParameters) {\n this.zoom = options.zoom;\n this.overscaling = options.overscaling;\n this.layers = options.layers;\n this.layerIds = this.layers.map(layer => layer.id);\n this.index = options.index;\n this.hasPattern = false;\n this.patternFeatures = [];\n\n this.layoutVertexArray = new FillLayoutArray();\n this.indexArray = new TriangleIndexArray();\n this.indexArray2 = new LineIndexArray();\n this.programConfigurations = new ProgramConfigurationSet(options.layers, options.zoom);\n this.segments = new SegmentVector();\n this.segments2 = new SegmentVector();\n this.stateDependentLayerIds = this.layers.filter((l) => l.isStateDependent()).map((l) => l.id);\n }\n\n populate(features: Array, options: PopulateParameters, canonical: CanonicalTileID) {\n this.hasPattern = hasPattern('fill', this.layers, options);\n const fillSortKey = this.layers[0].layout.get('fill-sort-key');\n const sortFeaturesByKey = !fillSortKey.isConstant();\n const bucketFeatures: BucketFeature[] = [];\n\n for (const {feature, id, index, sourceLayerIndex} of features) {\n const needGeometry = this.layers[0]._featureFilter.needGeometry;\n const evaluationFeature = toEvaluationFeature(feature, needGeometry);\n\n if (!this.layers[0]._featureFilter.filter(new EvaluationParameters(this.zoom), evaluationFeature, canonical)) continue;\n\n const sortKey = sortFeaturesByKey ?\n fillSortKey.evaluate(evaluationFeature, {}, canonical, options.availableImages) :\n undefined;\n\n const bucketFeature: BucketFeature = {\n id,\n properties: feature.properties,\n type: feature.type,\n sourceLayerIndex,\n index,\n geometry: needGeometry ? evaluationFeature.geometry : loadGeometry(feature),\n patterns: {},\n sortKey\n };\n\n bucketFeatures.push(bucketFeature);\n }\n\n if (sortFeaturesByKey) {\n bucketFeatures.sort((a, b) => a.sortKey - b.sortKey);\n }\n\n for (const bucketFeature of bucketFeatures) {\n const {geometry, index, sourceLayerIndex} = bucketFeature;\n\n if (this.hasPattern) {\n const patternFeature = addPatternDependencies('fill', this.layers, bucketFeature, this.zoom, options);\n // pattern features are added only once the pattern is loaded into the image atlas\n // so are stored during populate until later updated with positions by tile worker in addFeatures\n this.patternFeatures.push(patternFeature);\n } else {\n this.addFeature(bucketFeature, geometry, index, canonical, {}, options.subdivisionGranularity);\n }\n\n const feature = features[index].feature;\n options.featureIndex.insert(feature, geometry, index, sourceLayerIndex, this.index);\n }\n }\n\n update(states: FeatureStates, vtLayer: VectorTileLayer, imagePositions: {\n [_: string]: ImagePosition;\n }) {\n if (!this.stateDependentLayers.length) return;\n this.programConfigurations.updatePaintArrays(states, vtLayer, this.stateDependentLayers, imagePositions);\n }\n\n addFeatures(options: PopulateParameters, canonical: CanonicalTileID, imagePositions: {\n [_: string]: ImagePosition;\n }) {\n for (const feature of this.patternFeatures) {\n this.addFeature(feature, feature.geometry, feature.index, canonical, imagePositions, options.subdivisionGranularity);\n }\n }\n\n isEmpty() {\n return this.layoutVertexArray.length === 0;\n }\n\n uploadPending(): boolean {\n return !this.uploaded || this.programConfigurations.needsUpload;\n }\n upload(context: Context) {\n if (!this.uploaded) {\n this.layoutVertexBuffer = context.createVertexBuffer(this.layoutVertexArray, layoutAttributes);\n this.indexBuffer = context.createIndexBuffer(this.indexArray);\n this.indexBuffer2 = context.createIndexBuffer(this.indexArray2);\n }\n this.programConfigurations.upload(context);\n this.uploaded = true;\n }\n\n destroy() {\n if (!this.layoutVertexBuffer) return;\n this.layoutVertexBuffer.destroy();\n this.indexBuffer.destroy();\n this.indexBuffer2.destroy();\n this.programConfigurations.destroy();\n this.segments.destroy();\n this.segments2.destroy();\n }\n\n addFeature(feature: BucketFeature, geometry: Array>, index: number, canonical: CanonicalTileID, imagePositions: {\n [_: string]: ImagePosition;\n }, subdivisionGranularity: SubdivisionGranularitySetting) {\n for (const polygon of classifyRings(geometry, EARCUT_MAX_RINGS)) {\n const subdivided = subdividePolygon(polygon, canonical, subdivisionGranularity.fill.getGranularityForZoomLevel(canonical.z));\n\n const vertexArray = this.layoutVertexArray;\n\n fillLargeMeshArrays(\n (x, y) => {\n vertexArray.emplaceBack(x, y);\n },\n this.segments,\n this.layoutVertexArray,\n this.indexArray,\n subdivided.verticesFlattened,\n subdivided.indicesTriangles,\n this.segments2,\n this.indexArray2,\n subdivided.indicesLineList,\n );\n }\n this.programConfigurations.populatePaintArrays(this.layoutVertexArray.length, feature, index, imagePositions, canonical);\n }\n}\n\nregister('FillBucket', FillBucket, {omit: ['layers', 'patternFeatures']});\n","// This file is generated. Edit build/generate-style-code.ts, then run 'npm run codegen'.\n/* eslint-disable */\n\nimport {latest as styleSpec} from '@maplibre/maplibre-gl-style-spec';\n\nimport {\n Properties,\n DataConstantProperty,\n DataDrivenProperty,\n CrossFadedDataDrivenProperty,\n CrossFadedProperty,\n ColorRampProperty,\n PossiblyEvaluatedPropertyValue,\n CrossFaded\n} from '../properties';\n\nimport type {Color, Formatted, Padding, ResolvedImage, VariableAnchorOffsetCollection} from '@maplibre/maplibre-gl-style-spec';\nimport {StylePropertySpecification} from '@maplibre/maplibre-gl-style-spec';\n\nexport type FillLayoutProps = {\n \"fill-sort-key\": DataDrivenProperty,\n};\n\nexport type FillLayoutPropsPossiblyEvaluated = {\n \"fill-sort-key\": PossiblyEvaluatedPropertyValue,\n};\n\nlet layout: Properties;\nconst getLayout = () => layout = layout || new Properties({\n \"fill-sort-key\": new DataDrivenProperty(styleSpec[\"layout_fill\"][\"fill-sort-key\"] as any as StylePropertySpecification),\n});\n\nexport type FillPaintProps = {\n \"fill-antialias\": DataConstantProperty,\n \"fill-opacity\": DataDrivenProperty,\n \"fill-color\": DataDrivenProperty,\n \"fill-outline-color\": DataDrivenProperty,\n \"fill-translate\": DataConstantProperty<[number, number]>,\n \"fill-translate-anchor\": DataConstantProperty<\"map\" | \"viewport\">,\n \"fill-pattern\": CrossFadedDataDrivenProperty,\n};\n\nexport type FillPaintPropsPossiblyEvaluated = {\n \"fill-antialias\": boolean,\n \"fill-opacity\": PossiblyEvaluatedPropertyValue,\n \"fill-color\": PossiblyEvaluatedPropertyValue,\n \"fill-outline-color\": PossiblyEvaluatedPropertyValue,\n \"fill-translate\": [number, number],\n \"fill-translate-anchor\": \"map\" | \"viewport\",\n \"fill-pattern\": PossiblyEvaluatedPropertyValue>,\n};\n\nlet paint: Properties;\nconst getPaint = () => paint = paint || new Properties({\n \"fill-antialias\": new DataConstantProperty(styleSpec[\"paint_fill\"][\"fill-antialias\"] as any as StylePropertySpecification),\n \"fill-opacity\": new DataDrivenProperty(styleSpec[\"paint_fill\"][\"fill-opacity\"] as any as StylePropertySpecification),\n \"fill-color\": new DataDrivenProperty(styleSpec[\"paint_fill\"][\"fill-color\"] as any as StylePropertySpecification),\n \"fill-outline-color\": new DataDrivenProperty(styleSpec[\"paint_fill\"][\"fill-outline-color\"] as any as StylePropertySpecification),\n \"fill-translate\": new DataConstantProperty(styleSpec[\"paint_fill\"][\"fill-translate\"] as any as StylePropertySpecification),\n \"fill-translate-anchor\": new DataConstantProperty(styleSpec[\"paint_fill\"][\"fill-translate-anchor\"] as any as StylePropertySpecification),\n \"fill-pattern\": new CrossFadedDataDrivenProperty(styleSpec[\"paint_fill\"][\"fill-pattern\"] as any as StylePropertySpecification),\n});\n\nexport default ({ get paint() { return getPaint() }, get layout() { return getLayout() } });","import {StyleLayer} from '../style_layer';\n\nimport {FillBucket} from '../../data/bucket/fill_bucket';\nimport {polygonIntersectsMultiPolygon} from '../../util/intersection_tests';\nimport {translateDistance, translate} from '../query_utils';\nimport properties, {type FillLayoutPropsPossiblyEvaluated, type FillPaintPropsPossiblyEvaluated} from './fill_style_layer_properties.g';\nimport {type Transitionable, type Transitioning, type Layout, type PossiblyEvaluated} from '../properties';\n\nimport type {FeatureState, LayerSpecification} from '@maplibre/maplibre-gl-style-spec';\nimport type {BucketParameters} from '../../data/bucket';\nimport type Point from '@mapbox/point-geometry';\nimport type {FillLayoutProps, FillPaintProps} from './fill_style_layer_properties.g';\nimport type {EvaluationParameters} from '../evaluation_parameters';\nimport type {IReadonlyTransform} from '../../geo/transform_interface';\nimport type {VectorTileFeature} from '@mapbox/vector-tile';\n\nexport const isFillStyleLayer = (layer: StyleLayer): layer is FillStyleLayer => layer.type === 'fill';\n\nexport class FillStyleLayer extends StyleLayer {\n _unevaluatedLayout: Layout;\n layout: PossiblyEvaluated;\n\n _transitionablePaint: Transitionable;\n _transitioningPaint: Transitioning;\n paint: PossiblyEvaluated;\n\n constructor(layer: LayerSpecification) {\n super(layer, properties);\n }\n\n recalculate(parameters: EvaluationParameters, availableImages: Array) {\n super.recalculate(parameters, availableImages);\n\n const outlineColor = this.paint._values['fill-outline-color'];\n if (outlineColor.value.kind === 'constant' && outlineColor.value.value === undefined) {\n this.paint._values['fill-outline-color'] = this.paint._values['fill-color'];\n }\n }\n\n createBucket(parameters: BucketParameters) {\n return new FillBucket(parameters);\n }\n\n queryRadius(): number {\n return translateDistance(this.paint.get('fill-translate'));\n }\n\n queryIntersectsFeature(\n queryGeometry: Array,\n feature: VectorTileFeature,\n featureState: FeatureState,\n geometry: Array>,\n zoom: number,\n transform: IReadonlyTransform,\n pixelsToTileUnits: number\n ): boolean {\n const translatedPolygon = translate(queryGeometry,\n this.paint.get('fill-translate'),\n this.paint.get('fill-translate-anchor'),\n -transform.bearingInRadians, pixelsToTileUnits);\n return polygonIntersectsMultiPolygon(translatedPolygon, geometry);\n }\n\n isTileClipped() {\n return true;\n }\n}\n","import {createLayout} from '../../util/struct_array';\n\nconst layout = createLayout([\n {name: 'a_pos', components: 2, type: 'Int16'},\n {name: 'a_normal_ed', components: 4, type: 'Int16'},\n], 4);\n\nexport const centroidAttributes = createLayout([\n {name: 'a_centroid', components: 2, type: 'Int16'}\n], 4);\n\nexport default layout;\nexport const {members, size, alignment} = layout;\n","import {FillExtrusionLayoutArray, PosArray} from '../array_types.g';\n\nimport {members as layoutAttributes, centroidAttributes} from './fill_extrusion_attributes';\nimport {type Segment, SegmentVector} from '../segment';\nimport {ProgramConfigurationSet} from '../program_configuration';\nimport {TriangleIndexArray} from '../index_array_type';\nimport {EXTENT} from '../extent';\nimport mvt from '@mapbox/vector-tile';\nconst vectorTileFeatureTypes = mvt.VectorTileFeature.types;\nimport {classifyRings} from '@maplibre/maplibre-gl-style-spec';\nconst EARCUT_MAX_RINGS = 500;\nimport {register} from '../../util/web_worker_transfer';\nimport {hasPattern, addPatternDependencies} from './pattern_bucket_features';\nimport {loadGeometry} from '../load_geometry';\nimport {toEvaluationFeature} from '../evaluation_feature';\nimport {EvaluationParameters} from '../../style/evaluation_parameters';\n\nimport type {CanonicalTileID} from '../../source/tile_id';\nimport type {\n Bucket,\n BucketParameters,\n BucketFeature,\n IndexedFeature,\n PopulateParameters\n} from '../bucket';\n\nimport type {FillExtrusionStyleLayer} from '../../style/style_layer/fill_extrusion_style_layer';\nimport type {Context} from '../../gl/context';\nimport type {IndexBuffer} from '../../gl/index_buffer';\nimport type {VertexBuffer} from '../../gl/vertex_buffer';\nimport type Point from '@mapbox/point-geometry';\nimport type {FeatureStates} from '../../source/source_state';\nimport type {ImagePosition} from '../../render/image_atlas';\nimport type {VectorTileLayer} from '@mapbox/vector-tile';\nimport {subdividePolygon, subdivideVertexLine} from '../../render/subdivision';\nimport type {SubdivisionGranularitySetting} from '../../render/subdivision_granularity_settings';\nimport {fillLargeMeshArrays} from '../../render/fill_large_mesh_arrays';\n\nconst FACTOR = Math.pow(2, 13);\n\nfunction addVertex(vertexArray, x, y, nx, ny, nz, t, e) {\n vertexArray.emplaceBack(\n // a_pos\n x,\n y,\n // a_normal_ed: 3-component normal and 1-component edgedistance\n Math.floor(nx * FACTOR) * 2 + t,\n ny * FACTOR * 2,\n nz * FACTOR * 2,\n // edgedistance (used for wrapping patterns around extrusion sides)\n Math.round(e)\n );\n}\n\ntype CentroidAccumulator = {\n x: number;\n y: number;\n sampleCount: number;\n}\n\nexport class FillExtrusionBucket implements Bucket {\n index: number;\n zoom: number;\n overscaling: number;\n layers: Array;\n layerIds: Array;\n stateDependentLayers: Array;\n stateDependentLayerIds: Array;\n\n layoutVertexArray: FillExtrusionLayoutArray;\n layoutVertexBuffer: VertexBuffer;\n\n centroidVertexArray: PosArray;\n centroidVertexBuffer: VertexBuffer;\n\n indexArray: TriangleIndexArray;\n indexBuffer: IndexBuffer;\n\n hasPattern: boolean;\n programConfigurations: ProgramConfigurationSet;\n segments: SegmentVector;\n uploaded: boolean;\n features: Array;\n\n constructor(options: BucketParameters) {\n this.zoom = options.zoom;\n this.overscaling = options.overscaling;\n this.layers = options.layers;\n this.layerIds = this.layers.map(layer => layer.id);\n this.index = options.index;\n this.hasPattern = false;\n\n this.layoutVertexArray = new FillExtrusionLayoutArray();\n this.centroidVertexArray = new PosArray();\n this.indexArray = new TriangleIndexArray();\n this.programConfigurations = new ProgramConfigurationSet(options.layers, options.zoom);\n this.segments = new SegmentVector();\n this.stateDependentLayerIds = this.layers.filter((l) => l.isStateDependent()).map((l) => l.id);\n }\n\n populate(features: Array, options: PopulateParameters, canonical: CanonicalTileID) {\n this.features = [];\n this.hasPattern = hasPattern('fill-extrusion', this.layers, options);\n\n for (const {feature, id, index, sourceLayerIndex} of features) {\n const needGeometry = this.layers[0]._featureFilter.needGeometry;\n const evaluationFeature = toEvaluationFeature(feature, needGeometry);\n\n if (!this.layers[0]._featureFilter.filter(new EvaluationParameters(this.zoom), evaluationFeature, canonical)) continue;\n\n const bucketFeature: BucketFeature = {\n id,\n sourceLayerIndex,\n index,\n geometry: needGeometry ? evaluationFeature.geometry : loadGeometry(feature),\n properties: feature.properties,\n type: feature.type,\n patterns: {}\n };\n\n if (this.hasPattern) {\n this.features.push(addPatternDependencies('fill-extrusion', this.layers, bucketFeature, this.zoom, options));\n } else {\n this.addFeature(bucketFeature, bucketFeature.geometry, index, canonical, {}, options.subdivisionGranularity);\n }\n\n options.featureIndex.insert(feature, bucketFeature.geometry, index, sourceLayerIndex, this.index, true);\n }\n }\n\n addFeatures(options: PopulateParameters, canonical: CanonicalTileID, imagePositions: {[_: string]: ImagePosition}) {\n for (const feature of this.features) {\n const {geometry} = feature;\n this.addFeature(feature, geometry, feature.index, canonical, imagePositions, options.subdivisionGranularity);\n }\n }\n\n update(states: FeatureStates, vtLayer: VectorTileLayer, imagePositions: {[_: string]: ImagePosition}) {\n if (!this.stateDependentLayers.length) return;\n this.programConfigurations.updatePaintArrays(states, vtLayer, this.stateDependentLayers, imagePositions);\n }\n\n isEmpty() {\n return this.layoutVertexArray.length === 0 && this.centroidVertexArray.length === 0;\n }\n\n uploadPending() {\n return !this.uploaded || this.programConfigurations.needsUpload;\n }\n\n upload(context: Context) {\n if (!this.uploaded) {\n this.layoutVertexBuffer = context.createVertexBuffer(this.layoutVertexArray, layoutAttributes);\n this.centroidVertexBuffer = context.createVertexBuffer(this.centroidVertexArray, centroidAttributes.members, true);\n this.indexBuffer = context.createIndexBuffer(this.indexArray);\n }\n this.programConfigurations.upload(context);\n this.uploaded = true;\n }\n\n destroy() {\n if (!this.layoutVertexBuffer) return;\n this.layoutVertexBuffer.destroy();\n this.indexBuffer.destroy();\n this.programConfigurations.destroy();\n this.segments.destroy();\n this.centroidVertexBuffer.destroy();\n }\n\n addFeature(feature: BucketFeature, geometry: Array>, index: number, canonical: CanonicalTileID, imagePositions: {[_: string]: ImagePosition}, subdivisionGranularity: SubdivisionGranularitySetting) {\n for (const polygon of classifyRings(geometry, EARCUT_MAX_RINGS)) {\n // Compute polygon centroid to calculate elevation in GPU\n const centroid: CentroidAccumulator = {x: 0, y: 0, sampleCount: 0};\n const oldVertexCount = this.layoutVertexArray.length;\n this.processPolygon(centroid, canonical, feature, polygon, subdivisionGranularity);\n\n const addedVertices = this.layoutVertexArray.length - oldVertexCount;\n\n const centroidX = Math.floor(centroid.x / centroid.sampleCount);\n const centroidY = Math.floor(centroid.y / centroid.sampleCount);\n\n for (let i = 0; i < addedVertices; i++) {\n this.centroidVertexArray.emplaceBack(\n centroidX,\n centroidY\n );\n }\n }\n\n this.programConfigurations.populatePaintArrays(this.layoutVertexArray.length, feature, index, imagePositions, canonical);\n }\n\n private processPolygon(\n centroid: CentroidAccumulator,\n canonical: CanonicalTileID,\n feature: BucketFeature,\n polygon: Array>,\n subdivisionGranularity: SubdivisionGranularitySetting\n ): void {\n if (polygon.length < 1) {\n return;\n }\n\n if (isEntirelyOutside(polygon[0])) {\n return;\n }\n\n // Only consider the un-subdivided polygon outer ring for centroid calculation\n for (const ring of polygon) {\n if (ring.length === 0) {\n continue;\n }\n\n // Here we don't mind if a hole ring is entirely outside, unlike when generating geometry later.\n accumulatePointsToCentroid(centroid, ring);\n }\n\n const segmentReference = {\n segment: this.segments.prepareSegment(4, this.layoutVertexArray, this.indexArray)\n };\n const granularity = subdivisionGranularity.fill.getGranularityForZoomLevel(canonical.z);\n const isPolygon = vectorTileFeatureTypes[feature.type] === 'Polygon';\n\n for (const ring of polygon) {\n if (ring.length === 0) {\n continue;\n }\n\n if (isEntirelyOutside(ring)) {\n continue;\n }\n\n const subdividedRing = subdivideVertexLine(ring, granularity, isPolygon);\n this._generateSideFaces(subdividedRing, segmentReference);\n }\n\n // Only triangulate and draw the area of the feature if it is a polygon\n // Other feature types (e.g. LineString) do not have area, so triangulation is pointless / undefined\n if (!isPolygon)\n return;\n\n // Do not generate outlines, since outlines already got subdivided earlier.\n const subdividedPolygon = subdividePolygon(polygon, canonical, granularity, false);\n const vertexArray = this.layoutVertexArray;\n\n fillLargeMeshArrays(\n (x, y) => {\n addVertex(vertexArray, x, y, 0, 0, 1, 1, 0);\n },\n this.segments,\n this.layoutVertexArray,\n this.indexArray,\n subdividedPolygon.verticesFlattened,\n subdividedPolygon.indicesTriangles\n );\n }\n\n /**\n * Generates side faces for the supplied geometry. Assumes `geometry` to be a line string, like the output of {@link subdivideVertexLine}.\n * For rings, it is assumed that the first and last vertex of `geometry` are equal.\n */\n private _generateSideFaces(geometry: Array, segmentReference: {segment: Segment}) {\n let edgeDistance = 0;\n\n for (let p = 1; p < geometry.length; p++) {\n const p1 = geometry[p];\n const p2 = geometry[p - 1];\n\n if (isBoundaryEdge(p1, p2)) {\n continue;\n }\n\n if (segmentReference.segment.vertexLength + 4 > SegmentVector.MAX_VERTEX_ARRAY_LENGTH) {\n segmentReference.segment = this.segments.prepareSegment(4, this.layoutVertexArray, this.indexArray);\n }\n\n const perp = p1.sub(p2)._perp()._unit();\n const dist = p2.dist(p1);\n if (edgeDistance + dist > 32768) edgeDistance = 0;\n\n addVertex(this.layoutVertexArray, p1.x, p1.y, perp.x, perp.y, 0, 0, edgeDistance);\n addVertex(this.layoutVertexArray, p1.x, p1.y, perp.x, perp.y, 0, 1, edgeDistance);\n\n edgeDistance += dist;\n\n addVertex(this.layoutVertexArray, p2.x, p2.y, perp.x, perp.y, 0, 0, edgeDistance);\n addVertex(this.layoutVertexArray, p2.x, p2.y, perp.x, perp.y, 0, 1, edgeDistance);\n\n const bottomRight = segmentReference.segment.vertexLength;\n\n // ┌──────┐\n // │ 0 1 │ Counter-clockwise winding order.\n // │ │ Triangle 1: 0 => 2 => 1\n // │ 2 3 │ Triangle 2: 1 => 2 => 3\n // └──────┘\n this.indexArray.emplaceBack(bottomRight, bottomRight + 2, bottomRight + 1);\n this.indexArray.emplaceBack(bottomRight + 1, bottomRight + 2, bottomRight + 3);\n\n segmentReference.segment.vertexLength += 4;\n segmentReference.segment.primitiveLength += 2;\n }\n }\n}\n\n/**\n * Accumulates geometry to centroid. Geometry can be either a polygon ring, a line string or a closed line string.\n * In case of a polygon ring or line ring, the last vertex is ignored if it is the same as the first vertex.\n */\nfunction accumulatePointsToCentroid(centroid: CentroidAccumulator, geometry: Array): void {\n for (let i = 0; i < geometry.length; i++) {\n const p = geometry[i];\n\n if (i === geometry.length - 1 && geometry[0].x === p.x && geometry[0].y === p.y) {\n continue;\n }\n\n centroid.x += p.x;\n centroid.y += p.y;\n centroid.sampleCount++;\n }\n}\n\nregister('FillExtrusionBucket', FillExtrusionBucket, {omit: ['layers', 'features']});\n\nfunction isBoundaryEdge(p1, p2) {\n return (p1.x === p2.x && (p1.x < 0 || p1.x > EXTENT)) ||\n (p1.y === p2.y && (p1.y < 0 || p1.y > EXTENT));\n}\n\nfunction isEntirelyOutside(ring) {\n return ring.every(p => p.x < 0) ||\n ring.every(p => p.x > EXTENT) ||\n ring.every(p => p.y < 0) ||\n ring.every(p => p.y > EXTENT);\n}\n","// This file is generated. Edit build/generate-style-code.ts, then run 'npm run codegen'.\n/* eslint-disable */\n\nimport {latest as styleSpec} from '@maplibre/maplibre-gl-style-spec';\n\nimport {\n Properties,\n DataConstantProperty,\n DataDrivenProperty,\n CrossFadedDataDrivenProperty,\n CrossFadedProperty,\n ColorRampProperty,\n PossiblyEvaluatedPropertyValue,\n CrossFaded\n} from '../properties';\n\nimport type {Color, Formatted, Padding, ResolvedImage, VariableAnchorOffsetCollection} from '@maplibre/maplibre-gl-style-spec';\nimport {StylePropertySpecification} from '@maplibre/maplibre-gl-style-spec';\n\n\nexport type FillExtrusionPaintProps = {\n \"fill-extrusion-opacity\": DataConstantProperty,\n \"fill-extrusion-color\": DataDrivenProperty,\n \"fill-extrusion-translate\": DataConstantProperty<[number, number]>,\n \"fill-extrusion-translate-anchor\": DataConstantProperty<\"map\" | \"viewport\">,\n \"fill-extrusion-pattern\": CrossFadedDataDrivenProperty,\n \"fill-extrusion-height\": DataDrivenProperty,\n \"fill-extrusion-base\": DataDrivenProperty,\n \"fill-extrusion-vertical-gradient\": DataConstantProperty,\n};\n\nexport type FillExtrusionPaintPropsPossiblyEvaluated = {\n \"fill-extrusion-opacity\": number,\n \"fill-extrusion-color\": PossiblyEvaluatedPropertyValue,\n \"fill-extrusion-translate\": [number, number],\n \"fill-extrusion-translate-anchor\": \"map\" | \"viewport\",\n \"fill-extrusion-pattern\": PossiblyEvaluatedPropertyValue>,\n \"fill-extrusion-height\": PossiblyEvaluatedPropertyValue,\n \"fill-extrusion-base\": PossiblyEvaluatedPropertyValue,\n \"fill-extrusion-vertical-gradient\": boolean,\n};\n\nlet paint: Properties;\nconst getPaint = () => paint = paint || new Properties({\n \"fill-extrusion-opacity\": new DataConstantProperty(styleSpec[\"paint_fill-extrusion\"][\"fill-extrusion-opacity\"] as any as StylePropertySpecification),\n \"fill-extrusion-color\": new DataDrivenProperty(styleSpec[\"paint_fill-extrusion\"][\"fill-extrusion-color\"] as any as StylePropertySpecification),\n \"fill-extrusion-translate\": new DataConstantProperty(styleSpec[\"paint_fill-extrusion\"][\"fill-extrusion-translate\"] as any as StylePropertySpecification),\n \"fill-extrusion-translate-anchor\": new DataConstantProperty(styleSpec[\"paint_fill-extrusion\"][\"fill-extrusion-translate-anchor\"] as any as StylePropertySpecification),\n \"fill-extrusion-pattern\": new CrossFadedDataDrivenProperty(styleSpec[\"paint_fill-extrusion\"][\"fill-extrusion-pattern\"] as any as StylePropertySpecification),\n \"fill-extrusion-height\": new DataDrivenProperty(styleSpec[\"paint_fill-extrusion\"][\"fill-extrusion-height\"] as any as StylePropertySpecification),\n \"fill-extrusion-base\": new DataDrivenProperty(styleSpec[\"paint_fill-extrusion\"][\"fill-extrusion-base\"] as any as StylePropertySpecification),\n \"fill-extrusion-vertical-gradient\": new DataConstantProperty(styleSpec[\"paint_fill-extrusion\"][\"fill-extrusion-vertical-gradient\"] as any as StylePropertySpecification),\n});\n\nexport default ({ get paint() { return getPaint() } });","import {StyleLayer} from '../style_layer';\n\nimport {FillExtrusionBucket} from '../../data/bucket/fill_extrusion_bucket';\nimport {polygonIntersectsPolygon, polygonIntersectsMultiPolygon} from '../../util/intersection_tests';\nimport {translateDistance, translate} from '../query_utils';\nimport properties, {type FillExtrusionPaintPropsPossiblyEvaluated} from './fill_extrusion_style_layer_properties.g';\nimport {type Transitionable, type Transitioning, type PossiblyEvaluated} from '../properties';\nimport {type mat4, vec4} from 'gl-matrix';\nimport Point from '@mapbox/point-geometry';\nimport type {FeatureState, LayerSpecification} from '@maplibre/maplibre-gl-style-spec';\nimport type {BucketParameters} from '../../data/bucket';\nimport type {FillExtrusionPaintProps} from './fill_extrusion_style_layer_properties.g';\nimport type {IReadonlyTransform} from '../../geo/transform_interface';\nimport type {VectorTileFeature} from '@mapbox/vector-tile';\n\nexport class Point3D extends Point {\n z: number;\n}\n\nexport const isFillExtrusionStyleLayer = (layer: StyleLayer): layer is FillExtrusionStyleLayer => layer.type === 'fill-extrusion';\n\nexport class FillExtrusionStyleLayer extends StyleLayer {\n _transitionablePaint: Transitionable;\n _transitioningPaint: Transitioning;\n paint: PossiblyEvaluated;\n\n constructor(layer: LayerSpecification) {\n super(layer, properties);\n }\n\n createBucket(parameters: BucketParameters) {\n return new FillExtrusionBucket(parameters);\n }\n\n queryRadius(): number {\n return translateDistance(this.paint.get('fill-extrusion-translate'));\n }\n\n is3D(): boolean {\n return true;\n }\n\n queryIntersectsFeature(\n queryGeometry: Array,\n feature: VectorTileFeature,\n featureState: FeatureState,\n geometry: Array>,\n zoom: number,\n transform: IReadonlyTransform,\n pixelsToTileUnits: number,\n pixelPosMatrix: mat4\n ): boolean | number {\n\n const translatedPolygon = translate(queryGeometry,\n this.paint.get('fill-extrusion-translate'),\n this.paint.get('fill-extrusion-translate-anchor'),\n -transform.bearingInRadians, pixelsToTileUnits);\n\n const height = this.paint.get('fill-extrusion-height').evaluate(feature, featureState);\n const base = this.paint.get('fill-extrusion-base').evaluate(feature, featureState);\n\n const projectedQueryGeometry = projectQueryGeometry(translatedPolygon, pixelPosMatrix, transform, 0);\n\n const projected = projectExtrusion(geometry, base, height, pixelPosMatrix);\n const projectedBase = projected[0];\n const projectedTop = projected[1];\n return checkIntersection(projectedBase, projectedTop, projectedQueryGeometry);\n }\n}\n\nfunction dot(a, b) {\n return a.x * b.x + a.y * b.y;\n}\n\nexport function getIntersectionDistance(projectedQueryGeometry: Array, projectedFace: Array) {\n\n if (projectedQueryGeometry.length === 1) {\n // For point queries calculate the z at which the point intersects the face\n // using barycentric coordinates.\n\n // Find the barycentric coordinates of the projected point within the first\n // triangle of the face, using only the xy plane. It doesn't matter if the\n // point is outside the first triangle because all the triangles in the face\n // are in the same plane.\n //\n // Check whether points are coincident and use other points if they are.\n let i = 0;\n const a = projectedFace[i++];\n let b;\n while (!b || a.equals(b)) {\n b = projectedFace[i++];\n if (!b) return Infinity;\n }\n\n // Loop until point `c` is not colinear with points `a` and `b`.\n for (; i < projectedFace.length; i++) {\n const c = projectedFace[i];\n\n const p = projectedQueryGeometry[0];\n\n const ab = b.sub(a);\n const ac = c.sub(a);\n const ap = p.sub(a);\n\n const dotABAB = dot(ab, ab);\n const dotABAC = dot(ab, ac);\n const dotACAC = dot(ac, ac);\n const dotAPAB = dot(ap, ab);\n const dotAPAC = dot(ap, ac);\n const denom = dotABAB * dotACAC - dotABAC * dotABAC;\n\n const v = (dotACAC * dotAPAB - dotABAC * dotAPAC) / denom;\n const w = (dotABAB * dotAPAC - dotABAC * dotAPAB) / denom;\n const u = 1 - v - w;\n\n // Use the barycentric weighting along with the original triangle z coordinates to get the point of intersection.\n const distance = a.z * u + b.z * v + c.z * w;\n\n if (isFinite(distance)) return distance;\n }\n\n return Infinity;\n\n } else {\n // The counts as closest is less clear when the query is a box. This\n // returns the distance to the nearest point on the face, whether it is\n // within the query or not. It could be more correct to return the\n // distance to the closest point within the query box but this would be\n // more complicated and expensive to calculate with little benefit.\n let closestDistance = Infinity;\n for (const p of projectedFace) {\n closestDistance = Math.min(closestDistance, p.z);\n }\n return closestDistance;\n }\n}\n\nfunction checkIntersection(projectedBase: Array>, projectedTop: Array>, projectedQueryGeometry: Array) {\n let closestDistance = Infinity;\n\n if (polygonIntersectsMultiPolygon(projectedQueryGeometry, projectedTop)) {\n closestDistance = getIntersectionDistance(projectedQueryGeometry, projectedTop[0]);\n }\n\n for (let r = 0; r < projectedTop.length; r++) {\n const ringTop = projectedTop[r];\n const ringBase = projectedBase[r];\n for (let p = 0; p < ringTop.length - 1; p++) {\n const topA = ringTop[p];\n const topB = ringTop[p + 1];\n const baseA = ringBase[p];\n const baseB = ringBase[p + 1];\n const face = [topA, topB, baseB, baseA, topA];\n if (polygonIntersectsPolygon(projectedQueryGeometry, face)) {\n closestDistance = Math.min(closestDistance, getIntersectionDistance(projectedQueryGeometry, face));\n }\n }\n }\n\n return closestDistance === Infinity ? false : closestDistance;\n}\n\n/*\n * Project the geometry using matrix `m`. This is essentially doing\n * `vec4.transformMat4([], [p.x, p.y, z, 1], m)` but the multiplication\n * is inlined so that parts of the projection that are the same across\n * different points can only be done once. This produced a measurable\n * performance improvement.\n */\nfunction projectExtrusion(geometry: Array>, zBase: number, zTop: number, m: mat4): [Array>, Array>] {\n const projectedBase = [] as Array>;\n const projectedTop = [] as Array>;\n const baseXZ = m[8] * zBase;\n const baseYZ = m[9] * zBase;\n const baseZZ = m[10] * zBase;\n const baseWZ = m[11] * zBase;\n const topXZ = m[8] * zTop;\n const topYZ = m[9] * zTop;\n const topZZ = m[10] * zTop;\n const topWZ = m[11] * zTop;\n\n for (const r of geometry) {\n const ringBase = [] as Array;\n const ringTop = [] as Array;\n for (const p of r) {\n const x = p.x;\n const y = p.y;\n\n const sX = m[0] * x + m[4] * y + m[12];\n const sY = m[1] * x + m[5] * y + m[13];\n const sZ = m[2] * x + m[6] * y + m[14];\n const sW = m[3] * x + m[7] * y + m[15];\n\n const baseX = sX + baseXZ;\n const baseY = sY + baseYZ;\n const baseZ = sZ + baseZZ;\n const baseW = sW + baseWZ;\n\n const topX = sX + topXZ;\n const topY = sY + topYZ;\n const topZ = sZ + topZZ;\n const topW = sW + topWZ;\n\n const b = new Point(baseX / baseW, baseY / baseW) as Point3D;\n b.z = baseZ / baseW;\n ringBase.push(b);\n\n const t = new Point(topX / topW, topY / topW) as Point3D;\n t.z = topZ / topW;\n ringTop.push(t);\n }\n projectedBase.push(ringBase);\n projectedTop.push(ringTop);\n }\n return [projectedBase, projectedTop];\n}\n\nfunction projectQueryGeometry(queryGeometry: Array, pixelPosMatrix: mat4, transform: IReadonlyTransform, z: number) {\n const projectedQueryGeometry = [];\n for (const p of queryGeometry) {\n const v = [p.x, p.y, z, 1] as vec4;\n vec4.transformMat4(v, v, pixelPosMatrix);\n projectedQueryGeometry.push(new Point(v[0] / v[3], v[1] / v[3]));\n }\n return projectedQueryGeometry;\n}\n","import {createLayout} from '../../util/struct_array';\n\nexport const lineLayoutAttributes = createLayout([\n {name: 'a_pos_normal', components: 2, type: 'Int16'},\n {name: 'a_data', components: 4, type: 'Uint8'}\n], 4);\n\nexport const {members, size, alignment} = lineLayoutAttributes;\n","import {createLayout} from '../../util/struct_array';\n\nexport const lineLayoutAttributesExt = createLayout([\n {name: 'a_uv_x', components: 1, type: 'Float32'},\n {name: 'a_split_index', components: 1, type: 'Float32'},\n]);\n\nexport const {members, size, alignment} = lineLayoutAttributesExt;\n","import {LineLayoutArray, LineExtLayoutArray} from '../array_types.g';\n\nimport {members as layoutAttributes} from './line_attributes';\nimport {members as layoutAttributesExt} from './line_attributes_ext';\nimport {SegmentVector} from '../segment';\nimport {ProgramConfigurationSet} from '../program_configuration';\nimport {TriangleIndexArray} from '../index_array_type';\nimport {EXTENT} from '../extent';\nimport mvt from '@mapbox/vector-tile';\nconst vectorTileFeatureTypes = mvt.VectorTileFeature.types;\nimport {register} from '../../util/web_worker_transfer';\nimport {hasPattern, addPatternDependencies} from './pattern_bucket_features';\nimport {loadGeometry} from '../load_geometry';\nimport {toEvaluationFeature} from '../evaluation_feature';\nimport {EvaluationParameters} from '../../style/evaluation_parameters';\n\nimport type {CanonicalTileID} from '../../source/tile_id';\nimport type {\n Bucket,\n BucketParameters,\n BucketFeature,\n IndexedFeature,\n PopulateParameters\n} from '../bucket';\nimport type {LineStyleLayer} from '../../style/style_layer/line_style_layer';\nimport type Point from '@mapbox/point-geometry';\nimport type {Segment} from '../segment';\nimport {type RGBAImage} from '../../util/image';\nimport type {Context} from '../../gl/context';\nimport type {Texture} from '../../render/texture';\nimport type {IndexBuffer} from '../../gl/index_buffer';\nimport type {VertexBuffer} from '../../gl/vertex_buffer';\nimport type {FeatureStates} from '../../source/source_state';\nimport type {ImagePosition} from '../../render/image_atlas';\nimport type {VectorTileLayer} from '@mapbox/vector-tile';\nimport {subdivideVertexLine} from '../../render/subdivision';\nimport type {SubdivisionGranularitySetting} from '../../render/subdivision_granularity_settings';\n\n// NOTE ON EXTRUDE SCALE:\n// scale the extrusion vector so that the normal length is this value.\n// contains the \"texture\" normals (-1..1). this is distinct from the extrude\n// normals for line joins, because the x-value remains 0 for the texture\n// normal array, while the extrude normal actually moves the vertex to create\n// the acute/bevelled line join.\nconst EXTRUDE_SCALE = 63;\n\n/*\n * Sharp corners cause dashed lines to tilt because the distance along the line\n * is the same at both the inner and outer corners. To improve the appearance of\n * dashed lines we add extra points near sharp corners so that a smaller part\n * of the line is tilted.\n *\n * COS_HALF_SHARP_CORNER controls how sharp a corner has to be for us to add an\n * extra vertex. The default is 75 degrees.\n *\n * The newly created vertices are placed SHARP_CORNER_OFFSET pixels from the corner.\n */\nconst COS_HALF_SHARP_CORNER = Math.cos(75 / 2 * (Math.PI / 180));\nconst SHARP_CORNER_OFFSET = 15;\n\n// Angle per triangle for approximating round line joins.\nconst DEG_PER_TRIANGLE = 20;\n\n// The number of bits that is used to store the line distance in the buffer.\nconst LINE_DISTANCE_BUFFER_BITS = 15;\n\n// We don't have enough bits for the line distance as we'd like to have, so\n// use this value to scale the line distance (in tile units) down to a smaller\n// value. This lets us store longer distances while sacrificing precision.\nconst LINE_DISTANCE_SCALE = 1 / 2;\n\n// The maximum line distance, in tile units, that fits in the buffer.\nconst MAX_LINE_DISTANCE = Math.pow(2, LINE_DISTANCE_BUFFER_BITS - 1) / LINE_DISTANCE_SCALE;\n\ntype LineClips = {\n start: number;\n end: number;\n};\n\ntype GradientTexture = {\n texture?: Texture;\n gradient?: RGBAImage;\n version?: number;\n};\n\n/**\n * @internal\n * Line bucket class\n */\nexport class LineBucket implements Bucket {\n distance: number;\n totalDistance: number;\n maxLineLength: number;\n scaledDistance: number;\n lineClips?: LineClips;\n\n e1: number;\n e2: number;\n\n index: number;\n zoom: number;\n overscaling: number;\n layers: Array;\n layerIds: Array;\n gradients: {[x: string]: GradientTexture};\n stateDependentLayers: Array;\n stateDependentLayerIds: Array;\n patternFeatures: Array;\n lineClipsArray: Array;\n\n layoutVertexArray: LineLayoutArray;\n layoutVertexBuffer: VertexBuffer;\n layoutVertexArray2: LineExtLayoutArray;\n layoutVertexBuffer2: VertexBuffer;\n\n indexArray: TriangleIndexArray;\n indexBuffer: IndexBuffer;\n\n hasPattern: boolean;\n programConfigurations: ProgramConfigurationSet;\n segments: SegmentVector;\n uploaded: boolean;\n\n constructor(options: BucketParameters) {\n this.zoom = options.zoom;\n this.overscaling = options.overscaling;\n this.layers = options.layers;\n this.layerIds = this.layers.map(layer => layer.id);\n this.index = options.index;\n this.hasPattern = false;\n this.patternFeatures = [];\n this.lineClipsArray = [];\n this.gradients = {};\n this.layers.forEach(layer => {\n this.gradients[layer.id] = {};\n });\n\n this.layoutVertexArray = new LineLayoutArray();\n this.layoutVertexArray2 = new LineExtLayoutArray();\n this.indexArray = new TriangleIndexArray();\n this.programConfigurations = new ProgramConfigurationSet(options.layers, options.zoom);\n this.segments = new SegmentVector();\n this.maxLineLength = 0;\n\n this.stateDependentLayerIds = this.layers.filter((l) => l.isStateDependent()).map((l) => l.id);\n }\n\n populate(features: Array, options: PopulateParameters, canonical: CanonicalTileID) {\n this.hasPattern = hasPattern('line', this.layers, options);\n const lineSortKey = this.layers[0].layout.get('line-sort-key');\n const sortFeaturesByKey = !lineSortKey.isConstant();\n const bucketFeatures: BucketFeature[] = [];\n\n for (const {feature, id, index, sourceLayerIndex} of features) {\n const needGeometry = this.layers[0]._featureFilter.needGeometry;\n const evaluationFeature = toEvaluationFeature(feature, needGeometry);\n\n if (!this.layers[0]._featureFilter.filter(new EvaluationParameters(this.zoom), evaluationFeature, canonical)) continue;\n\n const sortKey = sortFeaturesByKey ?\n lineSortKey.evaluate(evaluationFeature, {}, canonical) :\n undefined;\n\n const bucketFeature: BucketFeature = {\n id,\n properties: feature.properties,\n type: feature.type,\n sourceLayerIndex,\n index,\n geometry: needGeometry ? evaluationFeature.geometry : loadGeometry(feature),\n patterns: {},\n sortKey\n };\n\n bucketFeatures.push(bucketFeature);\n }\n\n if (sortFeaturesByKey) {\n bucketFeatures.sort((a, b) => {\n return (a.sortKey) - (b.sortKey);\n });\n }\n\n for (const bucketFeature of bucketFeatures) {\n const {geometry, index, sourceLayerIndex} = bucketFeature;\n\n if (this.hasPattern) {\n const patternBucketFeature = addPatternDependencies('line', this.layers, bucketFeature, this.zoom, options);\n // pattern features are added only once the pattern is loaded into the image atlas\n // so are stored during populate until later updated with positions by tile worker in addFeatures\n this.patternFeatures.push(patternBucketFeature);\n } else {\n this.addFeature(bucketFeature, geometry, index, canonical, {}, options.subdivisionGranularity);\n }\n\n const feature = features[index].feature;\n options.featureIndex.insert(feature, geometry, index, sourceLayerIndex, this.index);\n }\n }\n\n update(states: FeatureStates, vtLayer: VectorTileLayer, imagePositions: {[_: string]: ImagePosition}) {\n if (!this.stateDependentLayers.length) return;\n this.programConfigurations.updatePaintArrays(states, vtLayer, this.stateDependentLayers, imagePositions);\n }\n\n addFeatures(options: PopulateParameters, canonical: CanonicalTileID, imagePositions: {[_: string]: ImagePosition}) {\n for (const feature of this.patternFeatures) {\n this.addFeature(feature, feature.geometry, feature.index, canonical, imagePositions, options.subdivisionGranularity);\n }\n }\n\n isEmpty() {\n return this.layoutVertexArray.length === 0;\n }\n\n uploadPending() {\n return !this.uploaded || this.programConfigurations.needsUpload;\n }\n\n upload(context: Context) {\n if (!this.uploaded) {\n if (this.layoutVertexArray2.length !== 0) {\n this.layoutVertexBuffer2 = context.createVertexBuffer(this.layoutVertexArray2, layoutAttributesExt);\n }\n this.layoutVertexBuffer = context.createVertexBuffer(this.layoutVertexArray, layoutAttributes);\n this.indexBuffer = context.createIndexBuffer(this.indexArray);\n }\n this.programConfigurations.upload(context);\n this.uploaded = true;\n }\n\n destroy() {\n if (!this.layoutVertexBuffer) return;\n this.layoutVertexBuffer.destroy();\n this.indexBuffer.destroy();\n this.programConfigurations.destroy();\n this.segments.destroy();\n }\n\n lineFeatureClips(feature: BucketFeature): LineClips | undefined {\n if (!!feature.properties && Object.prototype.hasOwnProperty.call(feature.properties, 'mapbox_clip_start') && Object.prototype.hasOwnProperty.call(feature.properties, 'mapbox_clip_end')) {\n const start = +feature.properties['mapbox_clip_start'];\n const end = +feature.properties['mapbox_clip_end'];\n return {start, end};\n }\n }\n\n addFeature(feature: BucketFeature, geometry: Array>, index: number, canonical: CanonicalTileID, imagePositions: {[_: string]: ImagePosition}, subdivisionGranularity: SubdivisionGranularitySetting) {\n const layout = this.layers[0].layout;\n const join = layout.get('line-join').evaluate(feature, {});\n const cap = layout.get('line-cap');\n const miterLimit = layout.get('line-miter-limit');\n const roundLimit = layout.get('line-round-limit');\n this.lineClips = this.lineFeatureClips(feature);\n\n for (const line of geometry) {\n this.addLine(line, feature, join, cap, miterLimit, roundLimit, canonical, subdivisionGranularity);\n }\n\n this.programConfigurations.populatePaintArrays(this.layoutVertexArray.length, feature, index, imagePositions, canonical);\n }\n\n addLine(vertices: Array, feature: BucketFeature, join: string, cap: string, miterLimit: number, roundLimit: number, canonical: CanonicalTileID | undefined, subdivisionGranularity: SubdivisionGranularitySetting) {\n this.distance = 0;\n this.scaledDistance = 0;\n this.totalDistance = 0;\n\n // First, subdivide the line if needed (mostly for globe rendering)\n const granularity = canonical ? subdivisionGranularity.line.getGranularityForZoomLevel(canonical.z) : 1;\n vertices = subdivideVertexLine(vertices, granularity);\n\n if (this.lineClips) {\n this.lineClipsArray.push(this.lineClips);\n // Calculate the total distance, in tile units, of this tiled line feature\n for (let i = 0; i < vertices.length - 1; i++) {\n this.totalDistance += vertices[i].dist(vertices[i + 1]);\n }\n this.updateScaledDistance();\n this.maxLineLength = Math.max(this.maxLineLength, this.totalDistance);\n }\n\n const isPolygon = vectorTileFeatureTypes[feature.type] === 'Polygon';\n\n // If the line has duplicate vertices at the ends, adjust start/length to remove them.\n let len = vertices.length;\n while (len >= 2 && vertices[len - 1].equals(vertices[len - 2])) {\n len--;\n }\n let first = 0;\n while (first < len - 1 && vertices[first].equals(vertices[first + 1])) {\n first++;\n }\n\n // Ignore invalid geometry.\n if (len < (isPolygon ? 3 : 2)) return;\n\n if (join === 'bevel') miterLimit = 1.05;\n\n const sharpCornerOffset = this.overscaling <= 16 ?\n SHARP_CORNER_OFFSET * EXTENT / (512 * this.overscaling) :\n 0;\n\n // we could be more precise, but it would only save a negligible amount of space\n const segment = this.segments.prepareSegment(len * 10, this.layoutVertexArray, this.indexArray);\n\n let currentVertex: Point;\n let prevVertex: Point;\n let nextVertex: Point;\n let prevNormal: Point;\n let nextNormal: Point;\n\n // the last two vertices added\n this.e1 = this.e2 = -1;\n\n if (isPolygon) {\n currentVertex = vertices[len - 2];\n nextNormal = vertices[first].sub(currentVertex)._unit()._perp();\n }\n\n for (let i = first; i < len; i++) {\n\n nextVertex = i === len - 1 ?\n (isPolygon ? vertices[first + 1] : undefined) : // if it's a polygon, treat the last vertex like the first\n vertices[i + 1]; // just the next vertex\n\n // if two consecutive vertices exist, skip the current one\n if (nextVertex && vertices[i].equals(nextVertex)) continue;\n\n if (nextNormal) prevNormal = nextNormal;\n if (currentVertex) prevVertex = currentVertex;\n\n currentVertex = vertices[i];\n\n // Calculate the normal towards the next vertex in this line. In case\n // there is no next vertex, pretend that the line is continuing straight,\n // meaning that we are just using the previous normal.\n nextNormal = nextVertex ? nextVertex.sub(currentVertex)._unit()._perp() : prevNormal;\n\n // If we still don't have a previous normal, this is the beginning of a\n // non-closed line, so we're doing a straight \"join\".\n prevNormal = prevNormal || nextNormal;\n\n // Determine the normal of the join extrusion. It is the angle bisector\n // of the segments between the previous line and the next line.\n // In the case of 180° angles, the prev and next normals cancel each other out:\n // prevNormal + nextNormal = (0, 0), its magnitude is 0, so the unit vector would be\n // undefined. In that case, we're keeping the joinNormal at (0, 0), so that the cosHalfAngle\n // below will also become 0 and miterLength will become Infinity.\n let joinNormal = prevNormal.add(nextNormal);\n if (joinNormal.x !== 0 || joinNormal.y !== 0) {\n joinNormal._unit();\n }\n /* joinNormal prevNormal\n * ↖ ↑\n * .________. prevVertex\n * |\n * nextNormal ← | currentVertex\n * |\n * nextVertex !\n *\n */\n\n // calculate cosines of the angle (and its half) using dot product\n const cosAngle = prevNormal.x * nextNormal.x + prevNormal.y * nextNormal.y;\n const cosHalfAngle = joinNormal.x * nextNormal.x + joinNormal.y * nextNormal.y;\n\n // Calculate the length of the miter (the ratio of the miter to the width)\n // as the inverse of cosine of the angle between next and join normals\n const miterLength = cosHalfAngle !== 0 ? 1 / cosHalfAngle : Infinity;\n\n // approximate angle from cosine\n const approxAngle = 2 * Math.sqrt(2 - 2 * cosHalfAngle);\n\n const isSharpCorner = cosHalfAngle < COS_HALF_SHARP_CORNER && prevVertex && nextVertex;\n const lineTurnsLeft = prevNormal.x * nextNormal.y - prevNormal.y * nextNormal.x > 0;\n\n if (isSharpCorner && i > first) {\n const prevSegmentLength = currentVertex.dist(prevVertex);\n if (prevSegmentLength > 2 * sharpCornerOffset) {\n const newPrevVertex = currentVertex.sub(currentVertex.sub(prevVertex)._mult(sharpCornerOffset / prevSegmentLength)._round());\n this.updateDistance(prevVertex, newPrevVertex);\n this.addCurrentVertex(newPrevVertex, prevNormal, 0, 0, segment);\n prevVertex = newPrevVertex;\n }\n }\n\n // The join if a middle vertex, otherwise the cap.\n const middleVertex = prevVertex && nextVertex;\n let currentJoin = middleVertex ? join : isPolygon ? 'butt' : cap;\n\n if (middleVertex && currentJoin === 'round') {\n if (miterLength < roundLimit) {\n currentJoin = 'miter';\n } else if (miterLength <= 2) {\n currentJoin = 'fakeround';\n }\n }\n\n if (currentJoin === 'miter' && miterLength > miterLimit) {\n currentJoin = 'bevel';\n }\n\n if (currentJoin === 'bevel') {\n // The maximum extrude length is 128 / 63 = 2 times the width of the line\n // so if miterLength >= 2 we need to draw a different type of bevel here.\n if (miterLength > 2) currentJoin = 'flipbevel';\n\n // If the miterLength is really small and the line bevel wouldn't be visible,\n // just draw a miter join to save a triangle.\n if (miterLength < miterLimit) currentJoin = 'miter';\n }\n\n // Calculate how far along the line the currentVertex is\n if (prevVertex) this.updateDistance(prevVertex, currentVertex);\n\n if (currentJoin === 'miter') {\n\n joinNormal._mult(miterLength);\n this.addCurrentVertex(currentVertex, joinNormal, 0, 0, segment);\n\n } else if (currentJoin === 'flipbevel') {\n // miter is too big, flip the direction to make a beveled join\n\n if (miterLength > 100) {\n // Almost parallel lines\n joinNormal = nextNormal.mult(-1);\n\n } else {\n const bevelLength = miterLength * prevNormal.add(nextNormal).mag() / prevNormal.sub(nextNormal).mag();\n joinNormal._perp()._mult(bevelLength * (lineTurnsLeft ? -1 : 1));\n }\n this.addCurrentVertex(currentVertex, joinNormal, 0, 0, segment);\n this.addCurrentVertex(currentVertex, joinNormal.mult(-1), 0, 0, segment);\n\n } else if (currentJoin === 'bevel' || currentJoin === 'fakeround') {\n const offset = -Math.sqrt(miterLength * miterLength - 1);\n const offsetA = lineTurnsLeft ? offset : 0;\n const offsetB = lineTurnsLeft ? 0 : offset;\n\n // Close previous segment with a bevel\n if (prevVertex) {\n this.addCurrentVertex(currentVertex, prevNormal, offsetA, offsetB, segment);\n }\n\n if (currentJoin === 'fakeround') {\n // The join angle is sharp enough that a round join would be visible.\n // Bevel joins fill the gap between segments with a single pie slice triangle.\n // Create a round join by adding multiple pie slices. The join isn't actually round, but\n // it looks like it is at the sizes we render lines at.\n\n // pick the number of triangles for approximating round join by based on the angle between normals\n const n = Math.round((approxAngle * 180 / Math.PI) / DEG_PER_TRIANGLE);\n\n for (let m = 1; m < n; m++) {\n let t = m / n;\n if (t !== 0.5) {\n // approximate spherical interpolation https://observablehq.com/@mourner/approximating-geometric-slerp\n const t2 = t - 0.5;\n const A = 1.0904 + cosAngle * (-3.2452 + cosAngle * (3.55645 - cosAngle * 1.43519));\n const B = 0.848013 + cosAngle * (-1.06021 + cosAngle * 0.215638);\n t = t + t * t2 * (t - 1) * (A * t2 * t2 + B);\n }\n const extrude = nextNormal.sub(prevNormal)._mult(t)._add(prevNormal)._unit()._mult(lineTurnsLeft ? -1 : 1);\n this.addHalfVertex(currentVertex, extrude.x, extrude.y, false, lineTurnsLeft, 0, segment);\n }\n }\n\n if (nextVertex) {\n // Start next segment\n this.addCurrentVertex(currentVertex, nextNormal, -offsetA, -offsetB, segment);\n }\n\n } else if (currentJoin === 'butt') {\n this.addCurrentVertex(currentVertex, joinNormal, 0, 0, segment); // butt cap\n\n } else if (currentJoin === 'square') {\n const offset = prevVertex ? 1 : -1; // closing or starting square cap\n this.addCurrentVertex(currentVertex, joinNormal, offset, offset, segment);\n\n } else if (currentJoin === 'round') {\n\n if (prevVertex) {\n // Close previous segment with butt\n this.addCurrentVertex(currentVertex, prevNormal, 0, 0, segment);\n\n // Add round cap or linejoin at end of segment\n this.addCurrentVertex(currentVertex, prevNormal, 1, 1, segment, true);\n }\n if (nextVertex) {\n // Add round cap before first segment\n this.addCurrentVertex(currentVertex, nextNormal, -1, -1, segment, true);\n\n // Start next segment with a butt\n this.addCurrentVertex(currentVertex, nextNormal, 0, 0, segment);\n }\n }\n\n if (isSharpCorner && i < len - 1) {\n const nextSegmentLength = currentVertex.dist(nextVertex);\n if (nextSegmentLength > 2 * sharpCornerOffset) {\n const newCurrentVertex = currentVertex.add(nextVertex.sub(currentVertex)._mult(sharpCornerOffset / nextSegmentLength)._round());\n this.updateDistance(currentVertex, newCurrentVertex);\n this.addCurrentVertex(newCurrentVertex, nextNormal, 0, 0, segment);\n currentVertex = newCurrentVertex;\n }\n }\n }\n }\n\n /**\n * Add two vertices to the buffers.\n *\n * @param p - the line vertex to add buffer vertices for\n * @param normal - vertex normal\n * @param endLeft - extrude to shift the left vertex along the line\n * @param endRight - extrude to shift the left vertex along the line\n * @param segment - the segment object to add the vertex to\n * @param round - whether this is a round cap\n */\n addCurrentVertex(p: Point, normal: Point, endLeft: number, endRight: number, segment: Segment, round: boolean = false) {\n // left and right extrude vectors, perpendicularly shifted by endLeft/endRight\n const leftX = normal.x + normal.y * endLeft;\n const leftY = normal.y - normal.x * endLeft;\n const rightX = -normal.x + normal.y * endRight;\n const rightY = -normal.y - normal.x * endRight;\n\n this.addHalfVertex(p, leftX, leftY, round, false, endLeft, segment);\n this.addHalfVertex(p, rightX, rightY, round, true, -endRight, segment);\n\n // There is a maximum \"distance along the line\" that we can store in the buffers.\n // When we get close to the distance, reset it to zero and add the vertex again with\n // a distance of zero. The max distance is determined by the number of bits we allocate\n // to `linesofar`.\n if (this.distance > MAX_LINE_DISTANCE / 2 && this.totalDistance === 0) {\n this.distance = 0;\n this.updateScaledDistance();\n this.addCurrentVertex(p, normal, endLeft, endRight, segment, round);\n }\n }\n\n addHalfVertex({x, y}: Point, extrudeX: number, extrudeY: number, round: boolean, up: boolean, dir: number, segment: Segment) {\n const totalDistance = this.lineClips ? this.scaledDistance * (MAX_LINE_DISTANCE - 1) : this.scaledDistance;\n // scale down so that we can store longer distances while sacrificing precision.\n const linesofarScaled = totalDistance * LINE_DISTANCE_SCALE;\n\n this.layoutVertexArray.emplaceBack(\n // a_pos_normal\n // Encode round/up the least significant bits\n (x << 1) + (round ? 1 : 0),\n (y << 1) + (up ? 1 : 0),\n // a_data\n // add 128 to store a byte in an unsigned byte\n Math.round(EXTRUDE_SCALE * extrudeX) + 128,\n Math.round(EXTRUDE_SCALE * extrudeY) + 128,\n // Encode the -1/0/1 direction value into the first two bits of .z of a_data.\n // Combine it with the lower 6 bits of `linesofarScaled` (shifted by 2 bits to make\n // room for the direction value). The upper 8 bits of `linesofarScaled` are placed in\n // the `w` component.\n ((dir === 0 ? 0 : (dir < 0 ? -1 : 1)) + 1) | ((linesofarScaled & 0x3F) << 2),\n linesofarScaled >> 6);\n\n // Constructs a second vertex buffer with higher precision line progress\n if (this.lineClips) {\n const progressRealigned = this.scaledDistance - this.lineClips.start;\n const endClipRealigned = this.lineClips.end - this.lineClips.start;\n const uvX = progressRealigned / endClipRealigned;\n this.layoutVertexArray2.emplaceBack(uvX, this.lineClipsArray.length);\n }\n\n const e = segment.vertexLength++;\n if (this.e1 >= 0 && this.e2 >= 0) {\n this.indexArray.emplaceBack(this.e1, e, this.e2);\n segment.primitiveLength++;\n }\n if (up) {\n this.e2 = e;\n } else {\n this.e1 = e;\n }\n }\n\n updateScaledDistance() {\n // Knowing the ratio of the full linestring covered by this tiled feature, as well\n // as the total distance (in tile units) of this tiled feature, and the distance\n // (in tile units) of the current vertex, we can determine the relative distance\n // of this vertex along the full linestring feature and scale it to [0, 2^15)\n this.scaledDistance = this.lineClips ?\n this.lineClips.start + (this.lineClips.end - this.lineClips.start) * this.distance / this.totalDistance :\n this.distance;\n }\n\n updateDistance(prev: Point, next: Point) {\n this.distance += prev.dist(next);\n this.updateScaledDistance();\n }\n}\n\nregister('LineBucket', LineBucket, {omit: ['layers', 'patternFeatures']});\n","// This file is generated. Edit build/generate-style-code.ts, then run 'npm run codegen'.\n/* eslint-disable */\n\nimport {latest as styleSpec} from '@maplibre/maplibre-gl-style-spec';\n\nimport {\n Properties,\n DataConstantProperty,\n DataDrivenProperty,\n CrossFadedDataDrivenProperty,\n CrossFadedProperty,\n ColorRampProperty,\n PossiblyEvaluatedPropertyValue,\n CrossFaded\n} from '../properties';\n\nimport type {Color, Formatted, Padding, ResolvedImage, VariableAnchorOffsetCollection} from '@maplibre/maplibre-gl-style-spec';\nimport {StylePropertySpecification} from '@maplibre/maplibre-gl-style-spec';\n\nexport type LineLayoutProps = {\n \"line-cap\": DataConstantProperty<\"butt\" | \"round\" | \"square\">,\n \"line-join\": DataDrivenProperty<\"bevel\" | \"round\" | \"miter\">,\n \"line-miter-limit\": DataConstantProperty,\n \"line-round-limit\": DataConstantProperty,\n \"line-sort-key\": DataDrivenProperty,\n};\n\nexport type LineLayoutPropsPossiblyEvaluated = {\n \"line-cap\": \"butt\" | \"round\" | \"square\",\n \"line-join\": PossiblyEvaluatedPropertyValue<\"bevel\" | \"round\" | \"miter\">,\n \"line-miter-limit\": number,\n \"line-round-limit\": number,\n \"line-sort-key\": PossiblyEvaluatedPropertyValue,\n};\n\nlet layout: Properties;\nconst getLayout = () => layout = layout || new Properties({\n \"line-cap\": new DataConstantProperty(styleSpec[\"layout_line\"][\"line-cap\"] as any as StylePropertySpecification),\n \"line-join\": new DataDrivenProperty(styleSpec[\"layout_line\"][\"line-join\"] as any as StylePropertySpecification),\n \"line-miter-limit\": new DataConstantProperty(styleSpec[\"layout_line\"][\"line-miter-limit\"] as any as StylePropertySpecification),\n \"line-round-limit\": new DataConstantProperty(styleSpec[\"layout_line\"][\"line-round-limit\"] as any as StylePropertySpecification),\n \"line-sort-key\": new DataDrivenProperty(styleSpec[\"layout_line\"][\"line-sort-key\"] as any as StylePropertySpecification),\n});\n\nexport type LinePaintProps = {\n \"line-opacity\": DataDrivenProperty,\n \"line-color\": DataDrivenProperty,\n \"line-translate\": DataConstantProperty<[number, number]>,\n \"line-translate-anchor\": DataConstantProperty<\"map\" | \"viewport\">,\n \"line-width\": DataDrivenProperty,\n \"line-gap-width\": DataDrivenProperty,\n \"line-offset\": DataDrivenProperty,\n \"line-blur\": DataDrivenProperty,\n \"line-dasharray\": CrossFadedProperty>,\n \"line-pattern\": CrossFadedDataDrivenProperty,\n \"line-gradient\": ColorRampProperty,\n};\n\nexport type LinePaintPropsPossiblyEvaluated = {\n \"line-opacity\": PossiblyEvaluatedPropertyValue,\n \"line-color\": PossiblyEvaluatedPropertyValue,\n \"line-translate\": [number, number],\n \"line-translate-anchor\": \"map\" | \"viewport\",\n \"line-width\": PossiblyEvaluatedPropertyValue,\n \"line-gap-width\": PossiblyEvaluatedPropertyValue,\n \"line-offset\": PossiblyEvaluatedPropertyValue,\n \"line-blur\": PossiblyEvaluatedPropertyValue,\n \"line-dasharray\": CrossFaded>,\n \"line-pattern\": PossiblyEvaluatedPropertyValue>,\n \"line-gradient\": ColorRampProperty,\n};\n\nlet paint: Properties;\nconst getPaint = () => paint = paint || new Properties({\n \"line-opacity\": new DataDrivenProperty(styleSpec[\"paint_line\"][\"line-opacity\"] as any as StylePropertySpecification),\n \"line-color\": new DataDrivenProperty(styleSpec[\"paint_line\"][\"line-color\"] as any as StylePropertySpecification),\n \"line-translate\": new DataConstantProperty(styleSpec[\"paint_line\"][\"line-translate\"] as any as StylePropertySpecification),\n \"line-translate-anchor\": new DataConstantProperty(styleSpec[\"paint_line\"][\"line-translate-anchor\"] as any as StylePropertySpecification),\n \"line-width\": new DataDrivenProperty(styleSpec[\"paint_line\"][\"line-width\"] as any as StylePropertySpecification),\n \"line-gap-width\": new DataDrivenProperty(styleSpec[\"paint_line\"][\"line-gap-width\"] as any as StylePropertySpecification),\n \"line-offset\": new DataDrivenProperty(styleSpec[\"paint_line\"][\"line-offset\"] as any as StylePropertySpecification),\n \"line-blur\": new DataDrivenProperty(styleSpec[\"paint_line\"][\"line-blur\"] as any as StylePropertySpecification),\n \"line-dasharray\": new CrossFadedProperty(styleSpec[\"paint_line\"][\"line-dasharray\"] as any as StylePropertySpecification),\n \"line-pattern\": new CrossFadedDataDrivenProperty(styleSpec[\"paint_line\"][\"line-pattern\"] as any as StylePropertySpecification),\n \"line-gradient\": new ColorRampProperty(styleSpec[\"paint_line\"][\"line-gradient\"] as any as StylePropertySpecification),\n});\n\nexport default ({ get paint() { return getPaint() }, get layout() { return getLayout() } });","import type Point from '@mapbox/point-geometry';\n\nimport {StyleLayer} from '../style_layer';\nimport {LineBucket} from '../../data/bucket/line_bucket';\nimport {polygonIntersectsBufferedMultiLine} from '../../util/intersection_tests';\nimport {getMaximumPaintValue, translateDistance, translate, offsetLine} from '../query_utils';\nimport properties, {type LineLayoutPropsPossiblyEvaluated, type LinePaintPropsPossiblyEvaluated} from './line_style_layer_properties.g';\nimport {extend} from '../../util/util';\nimport {EvaluationParameters} from '../evaluation_parameters';\nimport {type Transitionable, type Transitioning, type Layout, type PossiblyEvaluated, DataDrivenProperty} from '../properties';\n\nimport {isZoomExpression, Step} from '@maplibre/maplibre-gl-style-spec';\nimport type {FeatureState, LayerSpecification} from '@maplibre/maplibre-gl-style-spec';\nimport type {Bucket, BucketParameters} from '../../data/bucket';\nimport type {LineLayoutProps, LinePaintProps} from './line_style_layer_properties.g';\nimport type {IReadonlyTransform} from '../../geo/transform_interface';\nimport type {VectorTileFeature} from '@mapbox/vector-tile';\n\nexport class LineFloorwidthProperty extends DataDrivenProperty {\n useIntegerZoom: true;\n\n possiblyEvaluate(value, parameters) {\n parameters = new EvaluationParameters(Math.floor(parameters.zoom), {\n now: parameters.now,\n fadeDuration: parameters.fadeDuration,\n zoomHistory: parameters.zoomHistory,\n transition: parameters.transition\n });\n return super.possiblyEvaluate(value, parameters);\n }\n\n evaluate(value, globals, feature, featureState) {\n globals = extend({}, globals, {zoom: Math.floor(globals.zoom)});\n return super.evaluate(value, globals, feature, featureState);\n }\n}\n\nlet lineFloorwidthProperty: LineFloorwidthProperty;\n\nexport const isLineStyleLayer = (layer: StyleLayer): layer is LineStyleLayer => layer.type === 'line';\n\nexport class LineStyleLayer extends StyleLayer {\n _unevaluatedLayout: Layout;\n layout: PossiblyEvaluated;\n\n gradientVersion: number;\n stepInterpolant: boolean;\n\n _transitionablePaint: Transitionable;\n _transitioningPaint: Transitioning;\n paint: PossiblyEvaluated;\n\n constructor(layer: LayerSpecification) {\n super(layer, properties);\n this.gradientVersion = 0;\n if (!lineFloorwidthProperty) {\n lineFloorwidthProperty =\n new LineFloorwidthProperty(properties.paint.properties['line-width'].specification);\n lineFloorwidthProperty.useIntegerZoom = true;\n }\n }\n\n _handleSpecialPaintPropertyUpdate(name: string) {\n if (name === 'line-gradient') {\n const expression = this.gradientExpression();\n if (isZoomExpression(expression)) {\n this.stepInterpolant = expression._styleExpression.expression instanceof Step;\n } else {\n this.stepInterpolant = false;\n }\n this.gradientVersion = (this.gradientVersion + 1) % Number.MAX_SAFE_INTEGER;\n }\n }\n\n gradientExpression() {\n return this._transitionablePaint._values['line-gradient'].value.expression;\n }\n\n recalculate(parameters: EvaluationParameters, availableImages: Array) {\n super.recalculate(parameters, availableImages);\n (this.paint._values as any)['line-floorwidth'] =\n lineFloorwidthProperty.possiblyEvaluate(this._transitioningPaint._values['line-width'].value, parameters);\n }\n\n createBucket(parameters: BucketParameters) {\n return new LineBucket(parameters);\n }\n\n queryRadius(bucket: Bucket): number {\n const lineBucket: LineBucket = (bucket as any);\n const width = getLineWidth(\n getMaximumPaintValue('line-width', this, lineBucket),\n getMaximumPaintValue('line-gap-width', this, lineBucket));\n const offset = getMaximumPaintValue('line-offset', this, lineBucket);\n return width / 2 + Math.abs(offset) + translateDistance(this.paint.get('line-translate'));\n }\n\n queryIntersectsFeature(\n queryGeometry: Array,\n feature: VectorTileFeature,\n featureState: FeatureState,\n geometry: Array>,\n zoom: number,\n transform: IReadonlyTransform,\n pixelsToTileUnits: number\n ): boolean {\n const translatedPolygon = translate(queryGeometry,\n this.paint.get('line-translate'),\n this.paint.get('line-translate-anchor'),\n -transform.bearingInRadians, pixelsToTileUnits);\n const halfWidth = pixelsToTileUnits / 2 * getLineWidth(\n this.paint.get('line-width').evaluate(feature, featureState),\n this.paint.get('line-gap-width').evaluate(feature, featureState));\n const lineOffset = this.paint.get('line-offset').evaluate(feature, featureState);\n if (lineOffset) {\n geometry = offsetLine(geometry, lineOffset * pixelsToTileUnits);\n }\n\n return polygonIntersectsBufferedMultiLine(translatedPolygon, geometry, halfWidth);\n }\n\n isTileClipped() {\n return true;\n }\n}\n\nfunction getLineWidth(lineWidth, lineGapWidth) {\n if (lineGapWidth > 0) {\n return lineGapWidth + 2 * lineWidth;\n } else {\n return lineWidth;\n }\n}\n","import {createLayout} from '../../util/struct_array';\n\nexport const symbolLayoutAttributes = createLayout([\n {name: 'a_pos_offset', components: 4, type: 'Int16'},\n {name: 'a_data', components: 4, type: 'Uint16'},\n {name: 'a_pixeloffset', components: 4, type: 'Int16'}\n], 4);\n\nexport const dynamicLayoutAttributes = createLayout([\n {name: 'a_projected_pos', components: 3, type: 'Float32'}\n], 4);\n\nexport const placementOpacityAttributes = createLayout([\n {name: 'a_fade_opacity', components: 1, type: 'Uint32'}\n], 4);\n\nexport const collisionVertexAttributes = createLayout([\n {name: 'a_placed', components: 2, type: 'Uint8'},\n {name: 'a_shift', components: 2, type: 'Float32'},\n {name: 'a_box_real', components: 2, type: 'Int16'},\n]);\n\nexport const collisionBox = createLayout([\n // the box is centered around the anchor point\n {type: 'Int16', name: 'anchorPointX'},\n {type: 'Int16', name: 'anchorPointY'},\n\n // distances to the edges from the anchor\n {type: 'Int16', name: 'x1'},\n {type: 'Int16', name: 'y1'},\n {type: 'Int16', name: 'x2'},\n {type: 'Int16', name: 'y2'},\n\n // the index of the feature in the original vectortile\n {type: 'Uint32', name: 'featureIndex'},\n // the source layer the feature appears in\n {type: 'Uint16', name: 'sourceLayerIndex'},\n // the bucket the feature appears in\n {type: 'Uint16', name: 'bucketIndex'},\n]);\n\nexport const collisionBoxLayout = createLayout([ // used to render collision boxes for debugging purposes\n {name: 'a_pos', components: 2, type: 'Int16'},\n {name: 'a_anchor_pos', components: 2, type: 'Int16'},\n {name: 'a_extrude', components: 2, type: 'Int16'}\n], 4);\n\nexport const collisionCircleLayout = createLayout([ // used to render collision circles for debugging purposes\n {name: 'a_pos', components: 2, type: 'Float32'},\n {name: 'a_radius', components: 1, type: 'Float32'},\n {name: 'a_flags', components: 2, type: 'Int16'}\n], 4);\n\nexport const quadTriangle = createLayout([\n {name: 'triangle', components: 3, type: 'Uint16'},\n]);\n\nexport const placement = createLayout([\n {type: 'Int16', name: 'anchorX'},\n {type: 'Int16', name: 'anchorY'},\n {type: 'Uint16', name: 'glyphStartIndex'},\n {type: 'Uint16', name: 'numGlyphs'},\n {type: 'Uint32', name: 'vertexStartIndex'},\n {type: 'Uint32', name: 'lineStartIndex'},\n {type: 'Uint32', name: 'lineLength'},\n {type: 'Uint16', name: 'segment'},\n {type: 'Uint16', name: 'lowerSize'},\n {type: 'Uint16', name: 'upperSize'},\n {type: 'Float32', name: 'lineOffsetX'},\n {type: 'Float32', name: 'lineOffsetY'},\n {type: 'Uint8', name: 'writingMode'},\n {type: 'Uint8', name: 'placedOrientation'},\n {type: 'Uint8', name: 'hidden'},\n {type: 'Uint32', name: 'crossTileID'},\n {type: 'Int16', name: 'associatedIconIndex'}\n]);\n\nexport const symbolInstance = createLayout([\n {type: 'Int16', name: 'anchorX'},\n {type: 'Int16', name: 'anchorY'},\n {type: 'Int16', name: 'rightJustifiedTextSymbolIndex'},\n {type: 'Int16', name: 'centerJustifiedTextSymbolIndex'},\n {type: 'Int16', name: 'leftJustifiedTextSymbolIndex'},\n {type: 'Int16', name: 'verticalPlacedTextSymbolIndex'},\n {type: 'Int16', name: 'placedIconSymbolIndex'},\n {type: 'Int16', name: 'verticalPlacedIconSymbolIndex'},\n {type: 'Uint16', name: 'key'},\n {type: 'Uint16', name: 'textBoxStartIndex'},\n {type: 'Uint16', name: 'textBoxEndIndex'},\n {type: 'Uint16', name: 'verticalTextBoxStartIndex'},\n {type: 'Uint16', name: 'verticalTextBoxEndIndex'},\n {type: 'Uint16', name: 'iconBoxStartIndex'},\n {type: 'Uint16', name: 'iconBoxEndIndex'},\n {type: 'Uint16', name: 'verticalIconBoxStartIndex'},\n {type: 'Uint16', name: 'verticalIconBoxEndIndex'},\n {type: 'Uint16', name: 'featureIndex'},\n {type: 'Uint16', name: 'numHorizontalGlyphVertices'},\n {type: 'Uint16', name: 'numVerticalGlyphVertices'},\n {type: 'Uint16', name: 'numIconVertices'},\n {type: 'Uint16', name: 'numVerticalIconVertices'},\n {type: 'Uint16', name: 'useRuntimeCollisionCircles'},\n {type: 'Uint32', name: 'crossTileID'},\n {type: 'Float32', name: 'textBoxScale'},\n {type: 'Float32', name: 'collisionCircleDiameter'},\n {type: 'Uint16', name: 'textAnchorOffsetStartIndex'},\n {type: 'Uint16', name: 'textAnchorOffsetEndIndex'}\n]);\n\nexport const glyphOffset = createLayout([\n {type: 'Float32', name: 'offsetX'}\n]);\n\nexport const lineVertex = createLayout([\n {type: 'Int16', name: 'x'},\n {type: 'Int16', name: 'y'},\n {type: 'Int16', name: 'tileUnitDistanceFromAnchor'}\n]);\n\nexport const textAnchorOffset = createLayout([\n {type: 'Uint16', name: 'textAnchor'},\n {type: 'Float32', components: 2, name: 'textOffset'}\n]);\n","import {rtlWorkerPlugin} from '../source/rtl_text_plugin_worker';\n\nimport type {SymbolStyleLayer} from '../style/style_layer/symbol_style_layer';\nimport type {Feature} from '@maplibre/maplibre-gl-style-spec';\nimport {type Formatted} from '@maplibre/maplibre-gl-style-spec';\n\nfunction transformTextInternal(text: string, layer: SymbolStyleLayer, feature: Feature) {\n const transform = layer.layout.get('text-transform').evaluate(feature, {});\n if (transform === 'uppercase') {\n text = text.toLocaleUpperCase();\n } else if (transform === 'lowercase') {\n text = text.toLocaleLowerCase();\n }\n\n if (rtlWorkerPlugin.applyArabicShaping) {\n text = rtlWorkerPlugin.applyArabicShaping(text);\n }\n\n return text;\n}\n\nexport function transformText(text: Formatted, layer: SymbolStyleLayer, feature: Feature): Formatted {\n text.sections.forEach(section => {\n section.text = transformTextInternal(section.text, layer, feature);\n });\n return text;\n}\n","import {charHasRotatedVerticalOrientation} from './script_detection';\n\nexport const verticalizedCharacterMap = {\n '!': '︕',\n '#': '＃',\n '$': '＄',\n '%': '％',\n '&': '＆',\n '(': '︵',\n ')': '︶',\n '*': '＊',\n '+': '＋',\n ',': '︐',\n '-': '︲',\n '.': '・',\n '/': '／',\n ':': '︓',\n ';': '︔',\n '<': '︿',\n '=': '＝',\n '>': '﹀',\n '?': '︖',\n '@': '＠',\n '[': '﹇',\n '\\\\': '＼',\n ']': '﹈',\n '^': '＾',\n '_': '︳',\n '`': '｀',\n '{': '︷',\n '|': '―',\n '}': '︸',\n '~': '～',\n '¢': '￠',\n '£': '￡',\n '¥': '￥',\n '¦': '￤',\n '¬': '￢',\n '¯': '￣',\n '–': '︲',\n '—': '︱',\n '‘': '﹃',\n '’': '﹄',\n '“': '﹁',\n '”': '﹂',\n '…': '︙',\n '‧': '・',\n '₩': '￦',\n '、': '︑',\n '。': '︒',\n '〈': '︿',\n '〉': '﹀',\n '《': '︽',\n '》': '︾',\n '「': '﹁',\n '」': '﹂',\n '『': '﹃',\n '』': '﹄',\n '【': '︻',\n '】': '︼',\n '〔': '︹',\n '〕': '︺',\n '〖': '︗',\n '〗': '︘',\n '！': '︕',\n '（': '︵',\n '）': '︶',\n '，': '︐',\n '－': '︲',\n '．': '・',\n '：': '︓',\n '；': '︔',\n '＜': '︿',\n '＞': '﹀',\n '？': '︖',\n '［': '﹇',\n '］': '﹈',\n '＿': '︳',\n '｛': '︷',\n '｜': '―',\n '｝': '︸',\n '｟': '︵',\n '｠': '︶',\n '｡': '︒',\n '｢': '﹁',\n '｣': '﹂'\n};\n\nexport function verticalizePunctuation(input: string) {\n let output = '';\n\n for (let i = 0; i < input.length; i++) {\n const nextCharCode = input.charCodeAt(i + 1) || null;\n const prevCharCode = input.charCodeAt(i - 1) || null;\n\n const canReplacePunctuation = (\n (!nextCharCode || !charHasRotatedVerticalOrientation(nextCharCode) || verticalizedCharacterMap[input[i + 1]]) &&\n (!prevCharCode || !charHasRotatedVerticalOrientation(prevCharCode) || verticalizedCharacterMap[input[i - 1]])\n );\n\n if (canReplacePunctuation && verticalizedCharacterMap[input[i]]) {\n output += verticalizedCharacterMap[input[i]];\n } else {\n output += input[i];\n }\n }\n\n return output;\n}\n\n","// ONE_EM constant used to go between \"em\" units used in style spec and \"points\" used internally for layout\n\nexport default 24;\n","import {AlphaImage} from '../util/image';\n\nimport Protobuf from 'pbf';\nconst border = 3;\n\nimport type {StyleGlyph} from './style_glyph';\n\nfunction readFontstacks(tag: number, glyphs: Array, pbf: Protobuf) {\n if (tag === 1) {\n pbf.readMessage(readFontstack, glyphs);\n }\n}\n\nfunction readFontstack(tag: number, glyphs: Array, pbf: Protobuf) {\n if (tag === 3) {\n const {id, bitmap, width, height, left, top, advance} = pbf.readMessage(readGlyph, {});\n glyphs.push({\n id,\n bitmap: new AlphaImage({\n width: width + 2 * border,\n height: height + 2 * border\n }, bitmap),\n metrics: {width, height, left, top, advance}\n });\n }\n}\n\nfunction readGlyph(tag: number, glyph: any, pbf: Protobuf) {\n if (tag === 1) glyph.id = pbf.readVarint();\n else if (tag === 2) glyph.bitmap = pbf.readBytes();\n else if (tag === 3) glyph.width = pbf.readVarint();\n else if (tag === 4) glyph.height = pbf.readVarint();\n else if (tag === 5) glyph.left = pbf.readSVarint();\n else if (tag === 6) glyph.top = pbf.readSVarint();\n else if (tag === 7) glyph.advance = pbf.readVarint();\n}\n\nexport function parseGlyphPbf(data: ArrayBuffer | Uint8Array): Array {\n return new Protobuf(data).readFields(readFontstacks, []);\n}\n\nexport const GLYPH_PBF_BORDER = border;\n","\nexport default function potpack(boxes) {\n\n // calculate total box area and maximum box width\n let area = 0;\n let maxWidth = 0;\n\n for (const box of boxes) {\n area += box.w * box.h;\n maxWidth = Math.max(maxWidth, box.w);\n }\n\n // sort the boxes for insertion by height, descending\n boxes.sort((a, b) => b.h - a.h);\n\n // aim for a squarish resulting container,\n // slightly adjusted for sub-100% space utilization\n const startWidth = Math.max(Math.ceil(Math.sqrt(area / 0.95)), maxWidth);\n\n // start with a single empty space, unbounded at the bottom\n const spaces = [{x: 0, y: 0, w: startWidth, h: Infinity}];\n\n let width = 0;\n let height = 0;\n\n for (const box of boxes) {\n // look through spaces backwards so that we check smaller spaces first\n for (let i = spaces.length - 1; i >= 0; i--) {\n const space = spaces[i];\n\n // look for empty spaces that can accommodate the current box\n if (box.w > space.w || box.h > space.h) continue;\n\n // found the space; add the box to its top-left corner\n // |-------|-------|\n // | box | |\n // |_______| |\n // | space |\n // |_______________|\n box.x = space.x;\n box.y = space.y;\n\n height = Math.max(height, box.y + box.h);\n width = Math.max(width, box.x + box.w);\n\n if (box.w === space.w && box.h === space.h) {\n // space matches the box exactly; remove it\n const last = spaces.pop();\n if (i < spaces.length) spaces[i] = last;\n\n } else if (box.h === space.h) {\n // space matches the box height; update it accordingly\n // |-------|---------------|\n // | box | updated space |\n // |_______|_______________|\n space.x += box.w;\n space.w -= box.w;\n\n } else if (box.w === space.w) {\n // space matches the box width; update it accordingly\n // |---------------|\n // | box |\n // |_______________|\n // | updated space |\n // |_______________|\n space.y += box.h;\n space.h -= box.h;\n\n } else {\n // otherwise the box splits the space into two spaces\n // |-------|-----------|\n // | box | new space |\n // |_______|___________|\n // | updated space |\n // |___________________|\n spaces.push({\n x: space.x + box.w,\n y: space.y,\n w: space.w - box.w,\n h: box.h\n });\n space.y += box.h;\n space.h -= box.h;\n }\n break;\n }\n }\n\n return {\n w: width, // container width\n h: height, // container height\n fill: (area / (width * height)) || 0 // space utilization\n };\n}\n","/* eslint-disable key-spacing */\nimport {RGBAImage} from '../util/image';\nimport {register} from '../util/web_worker_transfer';\nimport potpack from 'potpack';\n\nimport type {StyleImage} from '../style/style_image';\nimport {type TextFit} from '../style/style_image';\nimport type {ImageManager} from './image_manager';\nimport type {Texture} from './texture';\nimport type {Rect} from './glyph_atlas';\nimport type {GetImagesResponse} from '../util/actor_messages';\n\nconst IMAGE_PADDING: number = 1;\nexport {IMAGE_PADDING};\n\nexport class ImagePosition {\n paddedRect: Rect;\n pixelRatio: number;\n version: number;\n stretchY: Array<[number, number]>;\n stretchX: Array<[number, number]>;\n content: [number, number, number, number];\n textFitWidth: TextFit;\n textFitHeight: TextFit;\n\n constructor(paddedRect: Rect, {\n pixelRatio,\n version,\n stretchX,\n stretchY,\n content,\n textFitWidth,\n textFitHeight\n }: StyleImage) {\n this.paddedRect = paddedRect;\n this.pixelRatio = pixelRatio;\n this.stretchX = stretchX;\n this.stretchY = stretchY;\n this.content = content;\n this.version = version;\n this.textFitWidth = textFitWidth;\n this.textFitHeight = textFitHeight;\n }\n\n get tl(): [number, number] {\n return [\n this.paddedRect.x + IMAGE_PADDING,\n this.paddedRect.y + IMAGE_PADDING\n ];\n }\n\n get br(): [number, number] {\n return [\n this.paddedRect.x + this.paddedRect.w - IMAGE_PADDING,\n this.paddedRect.y + this.paddedRect.h - IMAGE_PADDING\n ];\n }\n\n get tlbr(): Array {\n return this.tl.concat(this.br);\n }\n\n get displaySize(): [number, number] {\n return [\n (this.paddedRect.w - IMAGE_PADDING * 2) / this.pixelRatio,\n (this.paddedRect.h - IMAGE_PADDING * 2) / this.pixelRatio\n ];\n }\n}\n\n/**\n * A class holding all the images\n */\nexport class ImageAtlas {\n image: RGBAImage;\n iconPositions: {[_: string]: ImagePosition};\n patternPositions: {[_: string]: ImagePosition};\n haveRenderCallbacks: Array;\n uploaded: boolean;\n\n constructor(icons: GetImagesResponse, patterns: GetImagesResponse) {\n const iconPositions = {}, patternPositions = {};\n this.haveRenderCallbacks = [];\n\n const bins = [];\n\n this.addImages(icons, iconPositions, bins);\n this.addImages(patterns, patternPositions, bins);\n\n const {w, h} = potpack(bins);\n const image = new RGBAImage({width: w || 1, height: h || 1});\n\n for (const id in icons) {\n const src = icons[id];\n const bin = iconPositions[id].paddedRect;\n RGBAImage.copy(src.data, image, {x: 0, y: 0}, {x: bin.x + IMAGE_PADDING, y: bin.y + IMAGE_PADDING}, src.data);\n }\n\n for (const id in patterns) {\n const src = patterns[id];\n const bin = patternPositions[id].paddedRect;\n const x = bin.x + IMAGE_PADDING,\n y = bin.y + IMAGE_PADDING,\n w = src.data.width,\n h = src.data.height;\n\n RGBAImage.copy(src.data, image, {x: 0, y: 0}, {x, y}, src.data);\n // Add 1 pixel wrapped padding on each side of the image.\n RGBAImage.copy(src.data, image, {x: 0, y: h - 1}, {x, y: y - 1}, {width: w, height: 1}); // T\n RGBAImage.copy(src.data, image, {x: 0, y: 0}, {x, y: y + h}, {width: w, height: 1}); // B\n RGBAImage.copy(src.data, image, {x: w - 1, y: 0}, {x: x - 1, y}, {width: 1, height: h}); // L\n RGBAImage.copy(src.data, image, {x: 0, y: 0}, {x: x + w, y}, {width: 1, height: h}); // R\n }\n\n this.image = image;\n this.iconPositions = iconPositions;\n this.patternPositions = patternPositions;\n }\n\n addImages(images: {[_: string]: StyleImage}, positions: {[_: string]: ImagePosition}, bins: Array) {\n for (const id in images) {\n const src = images[id];\n const bin = {\n x: 0,\n y: 0,\n w: src.data.width + 2 * IMAGE_PADDING,\n h: src.data.height + 2 * IMAGE_PADDING,\n };\n bins.push(bin);\n positions[id] = new ImagePosition(bin, src);\n\n if (src.hasRenderCallback) {\n this.haveRenderCallbacks.push(id);\n }\n }\n }\n\n patchUpdatedImages(imageManager: ImageManager, texture: Texture) {\n imageManager.dispatchRenderCallbacks(this.haveRenderCallbacks);\n for (const name in imageManager.updatedImages) {\n this.patchUpdatedImage(this.iconPositions[name], imageManager.getImage(name), texture);\n this.patchUpdatedImage(this.patternPositions[name], imageManager.getImage(name), texture);\n }\n }\n\n patchUpdatedImage(position: ImagePosition, image: StyleImage, texture: Texture) {\n if (!position || !image) return;\n\n if (position.version === image.version) return;\n\n position.version = image.version;\n const [x, y] = position.tl;\n texture.update(image.data, undefined, {x, y});\n }\n\n}\n\nregister('ImagePosition', ImagePosition);\nregister('ImageAtlas', ImageAtlas);\n","import {\n charHasUprightVerticalOrientation,\n charAllowsIdeographicBreaking,\n charInComplexShapingScript\n} from '../util/script_detection';\nimport {verticalizePunctuation} from '../util/verticalize_punctuation';\nimport {rtlWorkerPlugin} from '../source/rtl_text_plugin_worker';\nimport ONE_EM from './one_em';\nimport {warnOnce} from '../util/util';\n\nimport type {StyleGlyph, GlyphMetrics} from '../style/style_glyph';\nimport {GLYPH_PBF_BORDER} from '../style/parse_glyph_pbf';\nimport {TextFit} from '../style/style_image';\nimport type {ImagePosition} from '../render/image_atlas';\nimport {IMAGE_PADDING} from '../render/image_atlas';\nimport type {Rect, GlyphPosition} from '../render/glyph_atlas';\nimport {type Formatted, type FormattedSection} from '@maplibre/maplibre-gl-style-spec';\n\nenum WritingMode {\n none = 0,\n horizontal = 1,\n vertical = 2,\n horizontalOnly = 3\n}\n\nconst SHAPING_DEFAULT_OFFSET = -17;\nexport {shapeText, shapeIcon, applyTextFit, fitIconToText, getAnchorAlignment, WritingMode, SHAPING_DEFAULT_OFFSET};\n\n// The position of a glyph relative to the text's anchor point.\nexport type PositionedGlyph = {\n glyph: number;\n imageName: string | null;\n x: number;\n y: number;\n vertical: boolean;\n scale: number;\n fontStack: string;\n sectionIndex: number;\n metrics: GlyphMetrics;\n rect: Rect | null;\n};\n\nexport type PositionedLine = {\n positionedGlyphs: Array;\n lineOffset: number;\n};\n\n// A collection of positioned glyphs and some metadata\nexport type Shaping = {\n positionedLines: Array;\n top: number;\n bottom: number;\n left: number;\n right: number;\n writingMode: WritingMode.horizontal | WritingMode.vertical;\n text: string;\n iconsInText: boolean;\n verticalizable: boolean;\n};\n\nfunction isEmpty(positionedLines: Array) {\n for (const line of positionedLines) {\n if (line.positionedGlyphs.length !== 0) {\n return false;\n }\n }\n return true;\n}\n\nexport type SymbolAnchor = 'center' | 'left' | 'right' | 'top' | 'bottom' | 'top-left' | 'top-right' | 'bottom-left' | 'bottom-right';\nexport type TextJustify = 'left' | 'center' | 'right';\n\n// Max number of images in label is 6401 U+E000–U+F8FF that covers\n// Basic Multilingual Plane Unicode Private Use Area (PUA).\nconst PUAbegin = 0xE000;\nconst PUAend = 0xF8FF;\n\nclass SectionOptions {\n // Text options\n scale: number;\n fontStack: string;\n // Image options\n imageName: string | null;\n\n constructor() {\n this.scale = 1.0;\n this.fontStack = '';\n this.imageName = null;\n }\n\n static forText(scale: number | null, fontStack: string) {\n const textOptions = new SectionOptions();\n textOptions.scale = scale || 1;\n textOptions.fontStack = fontStack;\n return textOptions;\n }\n\n static forImage(imageName: string) {\n const imageOptions = new SectionOptions();\n imageOptions.imageName = imageName;\n return imageOptions;\n }\n\n}\n\nclass TaggedString {\n text: string;\n sectionIndex: Array; // maps each character in 'text' to its corresponding entry in 'sections'\n sections: Array;\n imageSectionID: number | null;\n\n constructor() {\n this.text = '';\n this.sectionIndex = [];\n this.sections = [];\n this.imageSectionID = null;\n }\n\n static fromFeature(text: Formatted, defaultFontStack: string) {\n const result = new TaggedString();\n for (let i = 0; i < text.sections.length; i++) {\n const section = text.sections[i];\n if (!section.image) {\n result.addTextSection(section, defaultFontStack);\n } else {\n result.addImageSection(section);\n }\n }\n return result;\n }\n\n length(): number {\n return this.text.length;\n }\n\n getSection(index: number): SectionOptions {\n return this.sections[this.sectionIndex[index]];\n }\n\n getSectionIndex(index: number): number {\n return this.sectionIndex[index];\n }\n\n getCharCode(index: number): number {\n return this.text.charCodeAt(index);\n }\n\n verticalizePunctuation() {\n this.text = verticalizePunctuation(this.text);\n }\n\n trim() {\n let beginningWhitespace = 0;\n for (let i = 0;\n i < this.text.length && whitespace[this.text.charCodeAt(i)];\n i++) {\n beginningWhitespace++;\n }\n let trailingWhitespace = this.text.length;\n for (let i = this.text.length - 1;\n i >= 0 && i >= beginningWhitespace && whitespace[this.text.charCodeAt(i)];\n i--) {\n trailingWhitespace--;\n }\n this.text = this.text.substring(beginningWhitespace, trailingWhitespace);\n this.sectionIndex = this.sectionIndex.slice(beginningWhitespace, trailingWhitespace);\n }\n\n substring(start: number, end: number): TaggedString {\n const substring = new TaggedString();\n substring.text = this.text.substring(start, end);\n substring.sectionIndex = this.sectionIndex.slice(start, end);\n substring.sections = this.sections;\n return substring;\n }\n\n toString(): string {\n return this.text;\n }\n\n getMaxScale() {\n return this.sectionIndex.reduce((max, index) => Math.max(max, this.sections[index].scale), 0);\n }\n\n addTextSection(section: FormattedSection, defaultFontStack: string) {\n this.text += section.text;\n this.sections.push(SectionOptions.forText(section.scale, section.fontStack || defaultFontStack));\n const index = this.sections.length - 1;\n for (let i = 0; i < section.text.length; ++i) {\n this.sectionIndex.push(index);\n }\n }\n\n addImageSection(section: FormattedSection) {\n const imageName = section.image ? section.image.name : '';\n if (imageName.length === 0) {\n warnOnce('Can\\'t add FormattedSection with an empty image.');\n return;\n }\n\n const nextImageSectionCharCode = this.getNextImageSectionCharCode();\n if (!nextImageSectionCharCode) {\n warnOnce(`Reached maximum number of images ${PUAend - PUAbegin + 2}`);\n return;\n }\n\n this.text += String.fromCharCode(nextImageSectionCharCode);\n this.sections.push(SectionOptions.forImage(imageName));\n this.sectionIndex.push(this.sections.length - 1);\n }\n\n getNextImageSectionCharCode(): number | null {\n if (!this.imageSectionID) {\n this.imageSectionID = PUAbegin;\n return this.imageSectionID;\n }\n\n if (this.imageSectionID >= PUAend) return null;\n return ++this.imageSectionID;\n }\n}\n\nfunction breakLines(input: TaggedString, lineBreakPoints: Array): Array {\n const lines = [];\n const text = input.text;\n let start = 0;\n for (const lineBreak of lineBreakPoints) {\n lines.push(input.substring(start, lineBreak));\n start = lineBreak;\n }\n\n if (start < text.length) {\n lines.push(input.substring(start, text.length));\n }\n return lines;\n}\n\nfunction shapeText(\n text: Formatted,\n glyphMap: {\n [_: string]: {\n [_: number]: StyleGlyph;\n };\n },\n glyphPositions: {\n [_: string]: {\n [_: number]: GlyphPosition;\n };\n },\n imagePositions: {[_: string]: ImagePosition},\n defaultFontStack: string,\n maxWidth: number,\n lineHeight: number,\n textAnchor: SymbolAnchor,\n textJustify: TextJustify,\n spacing: number,\n translate: [number, number],\n writingMode: WritingMode.horizontal | WritingMode.vertical,\n allowVerticalPlacement: boolean,\n layoutTextSize: number,\n layoutTextSizeThisZoom: number\n): Shaping | false {\n const logicalInput = TaggedString.fromFeature(text, defaultFontStack);\n\n if (writingMode === WritingMode.vertical) {\n logicalInput.verticalizePunctuation();\n }\n\n let lines: Array;\n\n const {processBidirectionalText, processStyledBidirectionalText} = rtlWorkerPlugin;\n if (processBidirectionalText && logicalInput.sections.length === 1) {\n // Bidi doesn't have to be style-aware\n lines = [];\n const untaggedLines =\n processBidirectionalText(logicalInput.toString(),\n determineLineBreaks(logicalInput, spacing, maxWidth, glyphMap, imagePositions, layoutTextSize));\n for (const line of untaggedLines) {\n const taggedLine = new TaggedString();\n taggedLine.text = line;\n taggedLine.sections = logicalInput.sections;\n for (let i = 0; i < line.length; i++) {\n taggedLine.sectionIndex.push(0);\n }\n lines.push(taggedLine);\n }\n } else if (processStyledBidirectionalText) {\n // Need version of mapbox-gl-rtl-text with style support for combining RTL text\n // with formatting\n lines = [];\n const processedLines =\n processStyledBidirectionalText(logicalInput.text,\n logicalInput.sectionIndex,\n determineLineBreaks(logicalInput, spacing, maxWidth, glyphMap, imagePositions, layoutTextSize));\n for (const line of processedLines) {\n const taggedLine = new TaggedString();\n taggedLine.text = line[0];\n taggedLine.sectionIndex = line[1];\n taggedLine.sections = logicalInput.sections;\n lines.push(taggedLine);\n }\n } else {\n lines = breakLines(logicalInput, determineLineBreaks(logicalInput, spacing, maxWidth, glyphMap, imagePositions, layoutTextSize));\n }\n\n const positionedLines = [];\n const shaping = {\n positionedLines,\n text: logicalInput.toString(),\n top: translate[1],\n bottom: translate[1],\n left: translate[0],\n right: translate[0],\n writingMode,\n iconsInText: false,\n verticalizable: false\n };\n\n shapeLines(shaping, glyphMap, glyphPositions, imagePositions, lines, lineHeight, textAnchor, textJustify, writingMode, spacing, allowVerticalPlacement, layoutTextSizeThisZoom);\n if (isEmpty(positionedLines)) return false;\n\n return shaping;\n}\n\n// using computed properties due to https://github.com/facebook/flow/issues/380\n/* eslint no-useless-computed-key: 0 */\n\nconst whitespace: {\n [_: number]: boolean;\n} = {\n [0x09]: true, // tab\n [0x0a]: true, // newline\n [0x0b]: true, // vertical tab\n [0x0c]: true, // form feed\n [0x0d]: true, // carriage return\n [0x20]: true, // space\n};\n\nconst breakable: {\n [_: number]: boolean;\n} = {\n [0x0a]: true, // newline\n [0x20]: true, // space\n [0x26]: true, // ampersand\n [0x29]: true, // right parenthesis\n [0x2b]: true, // plus sign\n [0x2d]: true, // hyphen-minus\n [0x2f]: true, // solidus\n [0xad]: true, // soft hyphen\n [0xb7]: true, // middle dot\n [0x200b]: true, // zero-width space\n [0x2010]: true, // hyphen\n [0x2013]: true, // en dash\n [0x2027]: true // interpunct\n // Many other characters may be reasonable breakpoints\n // Consider \"neutral orientation\" characters at scriptDetection.charHasNeutralVerticalOrientation\n // See https://github.com/mapbox/mapbox-gl-js/issues/3658\n};\n\n// Allow breaks depending on the following character\nconst breakableBefore: {\n [_: number]: boolean;\n} = {\n [0x28]: true, // left parenthesis\n};\n\nfunction getGlyphAdvance(\n codePoint: number,\n section: SectionOptions,\n glyphMap: {\n [_: string]: {\n [_: number]: StyleGlyph;\n };\n },\n imagePositions: {[_: string]: ImagePosition},\n spacing: number,\n layoutTextSize: number\n): number {\n if (!section.imageName) {\n const positions = glyphMap[section.fontStack];\n const glyph = positions && positions[codePoint];\n if (!glyph) return 0;\n return glyph.metrics.advance * section.scale + spacing;\n } else {\n const imagePosition = imagePositions[section.imageName];\n if (!imagePosition) return 0;\n return imagePosition.displaySize[0] * section.scale * ONE_EM / layoutTextSize + spacing;\n }\n}\n\nfunction determineAverageLineWidth(logicalInput: TaggedString,\n spacing: number,\n maxWidth: number,\n glyphMap: {\n [_: string]: {\n [_: number]: StyleGlyph;\n };\n },\n imagePositions: {[_: string]: ImagePosition},\n layoutTextSize: number) {\n let totalWidth = 0;\n\n for (let index = 0; index < logicalInput.length(); index++) {\n const section = logicalInput.getSection(index);\n totalWidth += getGlyphAdvance(logicalInput.getCharCode(index), section, glyphMap, imagePositions, spacing, layoutTextSize);\n }\n\n const lineCount = Math.max(1, Math.ceil(totalWidth / maxWidth));\n return totalWidth / lineCount;\n}\n\nfunction calculateBadness(lineWidth: number,\n targetWidth: number,\n penalty: number,\n isLastBreak: boolean) {\n const raggedness = Math.pow(lineWidth - targetWidth, 2);\n if (isLastBreak) {\n // Favor finals lines shorter than average over longer than average\n if (lineWidth < targetWidth) {\n return raggedness / 2;\n } else {\n return raggedness * 2;\n }\n }\n\n return raggedness + Math.abs(penalty) * penalty;\n}\n\nfunction calculatePenalty(codePoint: number, nextCodePoint: number, penalizableIdeographicBreak: boolean) {\n let penalty = 0;\n // Force break on newline\n if (codePoint === 0x0a) {\n penalty -= 10000;\n }\n // Penalize breaks between characters that allow ideographic breaking because\n // they are less preferable than breaks at spaces (or zero width spaces).\n if (penalizableIdeographicBreak) {\n penalty += 150;\n }\n\n // Penalize open parenthesis at end of line\n if (codePoint === 0x28 || codePoint === 0xff08) {\n penalty += 50;\n }\n\n // Penalize close parenthesis at beginning of line\n if (nextCodePoint === 0x29 || nextCodePoint === 0xff09) {\n penalty += 50;\n }\n return penalty;\n}\n\ntype Break = {\n index: number;\n x: number;\n priorBreak: Break;\n badness: number;\n};\n\nfunction evaluateBreak(\n breakIndex: number,\n breakX: number,\n targetWidth: number,\n potentialBreaks: Array,\n penalty: number,\n isLastBreak: boolean\n): Break {\n // We could skip evaluating breaks where the line length (breakX - priorBreak.x) > maxWidth\n // ...but in fact we allow lines longer than maxWidth (if there's no break points)\n // ...and when targetWidth and maxWidth are close, strictly enforcing maxWidth can give\n // more lopsided results.\n\n let bestPriorBreak: Break = null;\n let bestBreakBadness = calculateBadness(breakX, targetWidth, penalty, isLastBreak);\n\n for (const potentialBreak of potentialBreaks) {\n const lineWidth = breakX - potentialBreak.x;\n const breakBadness =\n calculateBadness(lineWidth, targetWidth, penalty, isLastBreak) + potentialBreak.badness;\n if (breakBadness <= bestBreakBadness) {\n bestPriorBreak = potentialBreak;\n bestBreakBadness = breakBadness;\n }\n }\n\n return {\n index: breakIndex,\n x: breakX,\n priorBreak: bestPriorBreak,\n badness: bestBreakBadness\n };\n}\n\nfunction leastBadBreaks(lastLineBreak?: Break | null): Array {\n if (!lastLineBreak) {\n return [];\n }\n return leastBadBreaks(lastLineBreak.priorBreak).concat(lastLineBreak.index);\n}\n\nfunction determineLineBreaks(\n logicalInput: TaggedString,\n spacing: number,\n maxWidth: number,\n glyphMap: {\n [_: string]: {\n [_: number]: StyleGlyph;\n };\n },\n imagePositions: {[_: string]: ImagePosition},\n layoutTextSize: number\n): Array {\n if (!logicalInput)\n return [];\n\n const potentialLineBreaks = [];\n const targetWidth = determineAverageLineWidth(logicalInput, spacing, maxWidth, glyphMap, imagePositions, layoutTextSize);\n\n const hasServerSuggestedBreakpoints = logicalInput.text.indexOf('\\u200b') >= 0;\n\n let currentX = 0;\n\n for (let i = 0; i < logicalInput.length(); i++) {\n const section = logicalInput.getSection(i);\n const codePoint = logicalInput.getCharCode(i);\n if (!whitespace[codePoint]) currentX += getGlyphAdvance(codePoint, section, glyphMap, imagePositions, spacing, layoutTextSize);\n\n // Ideographic characters, spaces, and word-breaking punctuation that often appear without\n // surrounding spaces.\n if ((i < logicalInput.length() - 1)) {\n const ideographicBreak = charAllowsIdeographicBreaking(codePoint);\n if (breakable[codePoint] || ideographicBreak || section.imageName || (i !== logicalInput.length() - 2 && breakableBefore[logicalInput.getCharCode(i + 1)])) {\n\n potentialLineBreaks.push(\n evaluateBreak(\n i + 1,\n currentX,\n targetWidth,\n potentialLineBreaks,\n calculatePenalty(codePoint, logicalInput.getCharCode(i + 1), ideographicBreak && hasServerSuggestedBreakpoints),\n false));\n }\n }\n }\n\n return leastBadBreaks(\n evaluateBreak(\n logicalInput.length(),\n currentX,\n targetWidth,\n potentialLineBreaks,\n 0,\n true));\n}\n\nfunction getAnchorAlignment(anchor: SymbolAnchor) {\n let horizontalAlign = 0.5, verticalAlign = 0.5;\n\n switch (anchor) {\n case 'right':\n case 'top-right':\n case 'bottom-right':\n horizontalAlign = 1;\n break;\n case 'left':\n case 'top-left':\n case 'bottom-left':\n horizontalAlign = 0;\n break;\n }\n\n switch (anchor) {\n case 'bottom':\n case 'bottom-right':\n case 'bottom-left':\n verticalAlign = 1;\n break;\n case 'top':\n case 'top-right':\n case 'top-left':\n verticalAlign = 0;\n break;\n }\n\n return {horizontalAlign, verticalAlign};\n}\n\nfunction shapeLines(shaping: Shaping,\n glyphMap: {\n [_: string]: {\n [_: number]: StyleGlyph;\n };\n },\n glyphPositions: {\n [_: string]: {\n [_: number]: GlyphPosition;\n };\n },\n imagePositions: {[_: string]: ImagePosition},\n lines: Array,\n lineHeight: number,\n textAnchor: SymbolAnchor,\n textJustify: TextJustify,\n writingMode: WritingMode.horizontal | WritingMode.vertical,\n spacing: number,\n allowVerticalPlacement: boolean,\n layoutTextSizeThisZoom: number) {\n\n let x = 0;\n let y = SHAPING_DEFAULT_OFFSET;\n\n let maxLineLength = 0;\n let maxLineHeight = 0;\n\n const justify =\n textJustify === 'right' ? 1 :\n textJustify === 'left' ? 0 : 0.5;\n\n let lineIndex = 0;\n for (const line of lines) {\n line.trim();\n\n const lineMaxScale = line.getMaxScale();\n const maxLineOffset = (lineMaxScale - 1) * ONE_EM;\n const positionedLine = {positionedGlyphs: [], lineOffset: 0};\n shaping.positionedLines[lineIndex] = positionedLine;\n const positionedGlyphs = positionedLine.positionedGlyphs;\n let lineOffset = 0.0;\n\n if (!line.length()) {\n y += lineHeight; // Still need a line feed after empty line\n ++lineIndex;\n continue;\n }\n\n for (let i = 0; i < line.length(); i++) {\n const section = line.getSection(i);\n const sectionIndex = line.getSectionIndex(i);\n const codePoint = line.getCharCode(i);\n let baselineOffset = 0.0;\n let metrics = null;\n let rect = null;\n let imageName = null;\n let verticalAdvance = ONE_EM;\n const vertical = !(writingMode === WritingMode.horizontal ||\n // Don't verticalize glyphs that have no upright orientation if vertical placement is disabled.\n (!allowVerticalPlacement && !charHasUprightVerticalOrientation(codePoint)) ||\n // If vertical placement is enabled, don't verticalize glyphs that\n // are from complex text layout script, or whitespaces.\n (allowVerticalPlacement && (whitespace[codePoint] || charInComplexShapingScript(codePoint))));\n\n if (!section.imageName) {\n const positions = glyphPositions[section.fontStack];\n const glyphPosition = positions && positions[codePoint];\n if (glyphPosition && glyphPosition.rect) {\n rect = glyphPosition.rect;\n metrics = glyphPosition.metrics;\n } else {\n const glyphs = glyphMap[section.fontStack];\n const glyph = glyphs && glyphs[codePoint];\n if (!glyph) continue;\n metrics = glyph.metrics;\n }\n\n // We don't know the baseline, but since we're laying out\n // at 24 points, we can calculate how much it will move when\n // we scale up or down.\n baselineOffset = (lineMaxScale - section.scale) * ONE_EM;\n } else {\n const imagePosition = imagePositions[section.imageName];\n if (!imagePosition) continue;\n imageName = section.imageName;\n shaping.iconsInText = shaping.iconsInText || true;\n rect = imagePosition.paddedRect;\n const size = imagePosition.displaySize;\n // If needed, allow to set scale factor for an image using\n // alias \"image-scale\" that could be alias for \"font-scale\"\n // when FormattedSection is an image section.\n section.scale = section.scale * ONE_EM / layoutTextSizeThisZoom;\n\n metrics = {width: size[0],\n height: size[1],\n left: IMAGE_PADDING,\n top: -GLYPH_PBF_BORDER,\n advance: vertical ? size[1] : size[0]};\n\n // Difference between one EM and an image size.\n // Aligns bottom of an image to a baseline level.\n const imageOffset = ONE_EM - size[1] * section.scale;\n baselineOffset = maxLineOffset + imageOffset;\n verticalAdvance = metrics.advance;\n\n // Difference between height of an image and one EM at max line scale.\n // Pushes current line down if an image size is over 1 EM at max line scale.\n const offset = vertical ? size[0] * section.scale - ONE_EM * lineMaxScale :\n size[1] * section.scale - ONE_EM * lineMaxScale;\n if (offset > 0 && offset > lineOffset) {\n lineOffset = offset;\n }\n }\n\n if (!vertical) {\n positionedGlyphs.push({glyph: codePoint, imageName, x, y: y + baselineOffset, vertical, scale: section.scale, fontStack: section.fontStack, sectionIndex, metrics, rect});\n x += metrics.advance * section.scale + spacing;\n } else {\n shaping.verticalizable = true;\n positionedGlyphs.push({glyph: codePoint, imageName, x, y: y + baselineOffset, vertical, scale: section.scale, fontStack: section.fontStack, sectionIndex, metrics, rect});\n x += verticalAdvance * section.scale + spacing;\n }\n }\n\n // Only justify if we placed at least one glyph\n if (positionedGlyphs.length !== 0) {\n const lineLength = x - spacing;\n maxLineLength = Math.max(lineLength, maxLineLength);\n justifyLine(positionedGlyphs, 0, positionedGlyphs.length - 1, justify, lineOffset);\n }\n\n x = 0;\n const currentLineHeight = lineHeight * lineMaxScale + lineOffset;\n positionedLine.lineOffset = Math.max(lineOffset, maxLineOffset);\n y += currentLineHeight;\n maxLineHeight = Math.max(currentLineHeight, maxLineHeight);\n ++lineIndex;\n }\n\n // Calculate the bounding box and justify / align text block.\n const height = y - SHAPING_DEFAULT_OFFSET;\n const {horizontalAlign, verticalAlign} = getAnchorAlignment(textAnchor);\n align(shaping.positionedLines, justify, horizontalAlign, verticalAlign, maxLineLength, maxLineHeight, lineHeight, height, lines.length);\n\n shaping.top += -verticalAlign * height;\n shaping.bottom = shaping.top + height;\n shaping.left += -horizontalAlign * maxLineLength;\n shaping.right = shaping.left + maxLineLength;\n}\n\n// justify right = 1, left = 0, center = 0.5\nfunction justifyLine(positionedGlyphs: Array,\n start: number,\n end: number,\n justify: 1 | 0 | 0.5,\n lineOffset: number) {\n if (!justify && !lineOffset)\n return;\n\n const lastPositionedGlyph = positionedGlyphs[end];\n const lastAdvance = lastPositionedGlyph.metrics.advance * lastPositionedGlyph.scale;\n const lineIndent = (positionedGlyphs[end].x + lastAdvance) * justify;\n\n for (let j = start; j <= end; j++) {\n positionedGlyphs[j].x -= lineIndent;\n positionedGlyphs[j].y += lineOffset;\n }\n}\n\nfunction align(positionedLines: Array,\n justify: number,\n horizontalAlign: number,\n verticalAlign: number,\n maxLineLength: number,\n maxLineHeight: number,\n lineHeight: number,\n blockHeight: number,\n lineCount: number) {\n const shiftX = (justify - horizontalAlign) * maxLineLength;\n let shiftY = 0;\n\n if (maxLineHeight !== lineHeight) {\n shiftY = -blockHeight * verticalAlign - SHAPING_DEFAULT_OFFSET;\n } else {\n shiftY = (-verticalAlign * lineCount + 0.5) * lineHeight;\n }\n\n for (const line of positionedLines) {\n for (const positionedGlyph of line.positionedGlyphs) {\n positionedGlyph.x += shiftX;\n positionedGlyph.y += shiftY;\n }\n }\n}\n\nexport type PositionedIcon = {\n image: ImagePosition;\n top: number;\n bottom: number;\n left: number;\n right: number;\n collisionPadding?: [number, number, number, number];\n};\n\nfunction shapeIcon(\n image: ImagePosition,\n iconOffset: [number, number],\n iconAnchor: SymbolAnchor\n): PositionedIcon {\n const {horizontalAlign, verticalAlign} = getAnchorAlignment(iconAnchor);\n const dx = iconOffset[0];\n const dy = iconOffset[1];\n const x1 = dx - image.displaySize[0] * horizontalAlign;\n const x2 = x1 + image.displaySize[0];\n const y1 = dy - image.displaySize[1] * verticalAlign;\n const y2 = y1 + image.displaySize[1];\n return {image, top: y1, bottom: y2, left: x1, right: x2};\n}\n\nexport interface Box {\n x1: number;\n y1: number;\n x2: number;\n y2: number;\n}\n\n/**\n * Called after a PositionedIcon has already been run through fitIconToText,\n * but needs further adjustment to apply textFitWidth and textFitHeight.\n * @param shapedIcon - The icon that will be adjusted.\n * @returns Extents of the shapedIcon with text fit adjustments if necessary.\n */\nfunction applyTextFit(shapedIcon: PositionedIcon): Box {\n // Assume shapedIcon.image is set or this wouldn't be called.\n // Size of the icon after it was adjusted using stretchX and Y\n let iconLeft = shapedIcon.left;\n let iconTop = shapedIcon.top;\n let iconWidth = shapedIcon.right - iconLeft;\n let iconHeight = shapedIcon.bottom - iconTop;\n // Size of the original content area\n const contentWidth = shapedIcon.image.content[2] - shapedIcon.image.content[0];\n const contentHeight = shapedIcon.image.content[3] - shapedIcon.image.content[1];\n const textFitWidth = shapedIcon.image.textFitWidth ?? TextFit.stretchOrShrink;\n const textFitHeight = shapedIcon.image.textFitHeight ?? TextFit.stretchOrShrink;\n const contentAspectRatio = contentWidth / contentHeight;\n // Scale to the proportional axis first note that height takes precedence if\n // both axes are set to proportional.\n if (textFitHeight === TextFit.proportional) {\n if ((textFitWidth === TextFit.stretchOnly && iconWidth / iconHeight < contentAspectRatio) || textFitWidth === TextFit.proportional) {\n // Push the width of the icon back out to match the content aspect ratio\n const newIconWidth = Math.ceil(iconHeight * contentAspectRatio);\n iconLeft *= newIconWidth / iconWidth;\n iconWidth = newIconWidth;\n }\n } else if (textFitWidth === TextFit.proportional) {\n if (textFitHeight === TextFit.stretchOnly && contentAspectRatio !== 0 && iconWidth / iconHeight > contentAspectRatio) {\n // Push the height of the icon back out to match the content aspect ratio\n const newIconHeight = Math.ceil(iconWidth / contentAspectRatio);\n iconTop *= newIconHeight / iconHeight;\n iconHeight = newIconHeight;\n }\n } else {\n // If neither textFitHeight nor textFitWidth are proportional then\n // there is no effect since the content rectangle should be precisely\n // matched to the content\n }\n return {x1: iconLeft, y1: iconTop, x2: iconLeft + iconWidth, y2: iconTop + iconHeight};\n}\n\nfunction fitIconToText(\n shapedIcon: PositionedIcon,\n shapedText: Shaping,\n textFit: string,\n padding: [number, number, number, number],\n iconOffset: [number, number],\n fontScale: number\n): PositionedIcon {\n\n const image = shapedIcon.image;\n\n let collisionPadding;\n if (image.content) {\n const content = image.content;\n const pixelRatio = image.pixelRatio || 1;\n collisionPadding = [\n content[0] / pixelRatio,\n content[1] / pixelRatio,\n image.displaySize[0] - content[2] / pixelRatio,\n image.displaySize[1] - content[3] / pixelRatio\n ];\n }\n\n // We don't respect the icon-anchor, because icon-text-fit is set. Instead,\n // the icon will be centered on the text, then stretched in the given\n // dimensions.\n\n const textLeft = shapedText.left * fontScale;\n const textRight = shapedText.right * fontScale;\n\n let top, right, bottom, left;\n if (textFit === 'width' || textFit === 'both') {\n // Stretched horizontally to the text width\n left = iconOffset[0] + textLeft - padding[3];\n right = iconOffset[0] + textRight + padding[1];\n } else {\n // Centered on the text\n left = iconOffset[0] + (textLeft + textRight - image.displaySize[0]) / 2;\n right = left + image.displaySize[0];\n }\n\n const textTop = shapedText.top * fontScale;\n const textBottom = shapedText.bottom * fontScale;\n if (textFit === 'height' || textFit === 'both') {\n // Stretched vertically to the text height\n top = iconOffset[1] + textTop - padding[0];\n bottom = iconOffset[1] + textBottom + padding[2];\n } else {\n // Centered on the text\n top = iconOffset[1] + (textTop + textBottom - image.displaySize[1]) / 2;\n bottom = top + image.displaySize[1];\n }\n\n return {image, top, right, bottom, left, collisionPadding};\n}\n","import {Interpolate, interpolates} from '@maplibre/maplibre-gl-style-spec';\nimport {clamp} from '../util/util';\nimport {EvaluationParameters} from '../style/evaluation_parameters';\n\nimport type {PropertyValue, PossiblyEvaluatedPropertyValue} from '../style/properties';\nimport type {InterpolationType} from '@maplibre/maplibre-gl-style-spec';\n\nconst MAX_GLYPH_ICON_SIZE = 255;\nconst SIZE_PACK_FACTOR = 128;\nconst MAX_PACKED_SIZE = MAX_GLYPH_ICON_SIZE * SIZE_PACK_FACTOR;\n\nexport {getSizeData, evaluateSizeForFeature, evaluateSizeForZoom, SIZE_PACK_FACTOR, MAX_GLYPH_ICON_SIZE, MAX_PACKED_SIZE};\n\nexport type SizeData = {\n kind: 'constant';\n layoutSize: number;\n} | {\n kind: 'source';\n} | {\n kind: 'camera';\n minZoom: number;\n maxZoom: number;\n minSize: number;\n maxSize: number;\n interpolationType: InterpolationType;\n} | {\n kind: 'composite';\n minZoom: number;\n maxZoom: number;\n interpolationType: InterpolationType;\n};\n\nexport type EvaluatedZoomSize = {uSizeT: number; uSize: number};\n\n// For {text,icon}-size, get the bucket-level data that will be needed by\n// the painter to set symbol-size-related uniforms\nfunction getSizeData(\n tileZoom: number,\n value: PropertyValue>\n): SizeData {\n const {expression} = value;\n\n if (expression.kind === 'constant') {\n const layoutSize = expression.evaluate(new EvaluationParameters(tileZoom + 1));\n return {kind: 'constant', layoutSize};\n\n } else if (expression.kind === 'source') {\n return {kind: 'source'};\n\n } else {\n const {zoomStops, interpolationType} = expression;\n\n // calculate covering zoom stops for zoom-dependent values\n let lower = 0;\n while (lower < zoomStops.length && zoomStops[lower] <= tileZoom) lower++;\n lower = Math.max(0, lower - 1);\n let upper = lower;\n while (upper < zoomStops.length && zoomStops[upper] < tileZoom + 1) upper++;\n upper = Math.min(zoomStops.length - 1, upper);\n\n const minZoom = zoomStops[lower];\n const maxZoom = zoomStops[upper];\n\n // We'd like to be able to use CameraExpression or CompositeExpression in these\n // return types rather than ExpressionSpecification, but the former are not\n // transferrable across Web Worker boundaries.\n if (expression.kind === 'composite') {\n return {kind: 'composite', minZoom, maxZoom, interpolationType};\n }\n\n // for camera functions, also save off the function values\n // evaluated at the covering zoom levels\n const minSize = expression.evaluate(new EvaluationParameters(minZoom));\n const maxSize = expression.evaluate(new EvaluationParameters(maxZoom));\n\n return {kind: 'camera', minZoom, maxZoom, minSize, maxSize, interpolationType};\n }\n}\n\nfunction evaluateSizeForFeature(sizeData: SizeData,\n {\n uSize,\n uSizeT\n }: {\n uSize: number;\n uSizeT: number;\n },\n {\n lowerSize,\n upperSize\n }: {\n lowerSize: number;\n upperSize: number;\n }): number {\n if (sizeData.kind === 'source') {\n return lowerSize / SIZE_PACK_FACTOR;\n } else if (sizeData.kind === 'composite') {\n return interpolates.number(lowerSize / SIZE_PACK_FACTOR, upperSize / SIZE_PACK_FACTOR, uSizeT);\n }\n return uSize;\n}\n\nfunction evaluateSizeForZoom(sizeData: SizeData, zoom: number): EvaluatedZoomSize {\n let uSizeT = 0;\n let uSize = 0;\n\n if (sizeData.kind === 'constant') {\n uSize = sizeData.layoutSize;\n\n } else if (sizeData.kind !== 'source') {\n const {interpolationType, minZoom, maxZoom} = sizeData;\n\n // Even though we could get the exact value of the camera function\n // at z = tr.zoom, we intentionally do not: instead, we interpolate\n // between the camera function values at a pair of zoom stops covering\n // [tileZoom, tileZoom + 1] in order to be consistent with this\n // restriction on composite functions\n const t = !interpolationType ? 0 : clamp(\n Interpolate.interpolationFactor(interpolationType, zoom, minZoom, maxZoom), 0, 1);\n\n if (sizeData.kind === 'camera') {\n uSize = interpolates.number(sizeData.minSize, sizeData.maxSize, t);\n } else {\n uSizeT = t;\n }\n }\n\n return {uSizeT, uSize};\n}\n","import {type SymbolLayoutPropsPossiblyEvaluated} from './symbol_style_layer_properties.g';\nimport type {SymbolLayoutProps} from './symbol_style_layer_properties.g';\nimport {type PossiblyEvaluated} from '../properties';\n\n/**\n * The overlap mode for properties like `icon-overlap`and `text-overlap`\n */\nexport type OverlapMode = 'never' | 'always' | 'cooperative';\n\nexport function getOverlapMode(layout: PossiblyEvaluated, overlapProp: 'icon-overlap', allowOverlapProp: 'icon-allow-overlap'): OverlapMode;\nexport function getOverlapMode(layout: PossiblyEvaluated, overlapProp: 'text-overlap', allowOverlapProp: 'text-allow-overlap'): OverlapMode;\nexport function getOverlapMode(layout: PossiblyEvaluated, overlapProp: 'icon-overlap' | 'text-overlap', allowOverlapProp: 'icon-allow-overlap' | 'text-allow-overlap'): OverlapMode {\n let result: OverlapMode = 'never';\n const overlap = layout.get(overlapProp);\n\n if (overlap) {\n // if -overlap is set, use it\n result = overlap;\n } else if (layout.get(allowOverlapProp)) {\n // fall back to -allow-overlap, with false='never', true='always'\n result = 'always';\n }\n\n return result;\n}\n","import {\n symbolLayoutAttributes,\n collisionVertexAttributes,\n collisionBoxLayout,\n dynamicLayoutAttributes,\n} from './symbol_attributes';\n\nimport {SymbolLayoutArray,\n SymbolDynamicLayoutArray,\n SymbolOpacityArray,\n CollisionBoxLayoutArray,\n CollisionVertexArray,\n PlacedSymbolArray,\n SymbolInstanceArray,\n GlyphOffsetArray,\n SymbolLineVertexArray,\n TextAnchorOffsetArray\n} from '../array_types.g';\n\nimport Point from '@mapbox/point-geometry';\nimport {SegmentVector} from '../segment';\nimport {ProgramConfigurationSet} from '../program_configuration';\nimport {TriangleIndexArray, LineIndexArray} from '../index_array_type';\nimport {transformText} from '../../symbol/transform_text';\nimport {mergeLines} from '../../symbol/merge_lines';\nimport {allowsVerticalWritingMode, stringContainsRTLText} from '../../util/script_detection';\nimport {WritingMode} from '../../symbol/shaping';\nimport {loadGeometry} from '../load_geometry';\nimport {toEvaluationFeature} from '../evaluation_feature';\nimport mvt from '@mapbox/vector-tile';\nconst vectorTileFeatureTypes = mvt.VectorTileFeature.types;\nimport {verticalizedCharacterMap} from '../../util/verticalize_punctuation';\nimport {type Anchor} from '../../symbol/anchor';\nimport {getSizeData, MAX_PACKED_SIZE} from '../../symbol/symbol_size';\n\nimport {register} from '../../util/web_worker_transfer';\nimport {EvaluationParameters} from '../../style/evaluation_parameters';\nimport {Formatted, ResolvedImage} from '@maplibre/maplibre-gl-style-spec';\nimport {rtlWorkerPlugin} from '../../source/rtl_text_plugin_worker';\nimport {getOverlapMode} from '../../style/style_layer/overlap_mode';\nimport type {CanonicalTileID} from '../../source/tile_id';\nimport type {\n Bucket,\n BucketParameters,\n IndexedFeature,\n PopulateParameters\n} from '../bucket';\nimport type {CollisionBoxArray, CollisionBox, SymbolInstance} from '../array_types.g';\nimport type {StructArray, StructArrayMember, ViewType} from '../../util/struct_array';\nimport type {SymbolStyleLayer} from '../../style/style_layer/symbol_style_layer';\nimport type {Context} from '../../gl/context';\nimport type {IndexBuffer} from '../../gl/index_buffer';\nimport type {VertexBuffer} from '../../gl/vertex_buffer';\nimport type {SymbolQuad} from '../../symbol/quads';\nimport type {SizeData} from '../../symbol/symbol_size';\nimport type {FeatureStates} from '../../source/source_state';\nimport type {ImagePosition} from '../../render/image_atlas';\nimport type {VectorTileLayer} from '@mapbox/vector-tile';\n\nexport type SingleCollisionBox = {\n x1: number;\n y1: number;\n x2: number;\n y2: number;\n anchorPointX: number;\n anchorPointY: number;\n};\n\nexport type CollisionArrays = {\n textBox?: SingleCollisionBox;\n verticalTextBox?: SingleCollisionBox;\n iconBox?: SingleCollisionBox;\n verticalIconBox?: SingleCollisionBox;\n textFeatureIndex?: number;\n verticalTextFeatureIndex?: number;\n iconFeatureIndex?: number;\n verticalIconFeatureIndex?: number;\n};\n\nexport type SymbolFeature = {\n sortKey: number | void;\n text: Formatted | void;\n icon: ResolvedImage;\n index: number;\n sourceLayerIndex: number;\n geometry: Array>;\n properties: any;\n type: 'Unknown' | 'Point' | 'LineString' | 'Polygon';\n id?: any;\n};\n\nexport type SortKeyRange = {\n sortKey: number;\n symbolInstanceStart: number;\n symbolInstanceEnd: number;\n};\n\n// Opacity arrays are frequently updated but don't contain a lot of information, so we pack them\n// tight. Each Uint32 is actually four duplicate Uint8s for the four corners of a glyph\n// 7 bits are for the current opacity, and the lowest bit is the target opacity\n\n// actually defined in symbol_attributes.js\n// const placementOpacityAttributes = [\n// { name: 'a_fade_opacity', components: 1, type: 'Uint32' }\n// ];\nconst shaderOpacityAttributes = [\n {name: 'a_fade_opacity', components: 1, type: 'Uint8' as ViewType, offset: 0}\n];\n\nfunction addVertex(\n array: StructArray,\n anchorX: number,\n anchorY: number,\n ox: number,\n oy: number,\n tx: number,\n ty: number,\n sizeVertex: number,\n isSDF: boolean,\n pixelOffsetX: number,\n pixelOffsetY: number,\n minFontScaleX: number,\n minFontScaleY: number\n) {\n const aSizeX = sizeVertex ? Math.min(MAX_PACKED_SIZE, Math.round(sizeVertex[0])) : 0;\n const aSizeY = sizeVertex ? Math.min(MAX_PACKED_SIZE, Math.round(sizeVertex[1])) : 0;\n array.emplaceBack(\n // a_pos_offset\n anchorX,\n anchorY,\n Math.round(ox * 32),\n Math.round(oy * 32),\n\n // a_data\n tx, // x coordinate of symbol on glyph atlas texture\n ty, // y coordinate of symbol on glyph atlas texture\n (aSizeX << 1) + (isSDF ? 1 : 0),\n aSizeY,\n pixelOffsetX * 16,\n pixelOffsetY * 16,\n minFontScaleX * 256,\n minFontScaleY * 256\n );\n}\n\nfunction addDynamicAttributes(dynamicLayoutVertexArray: StructArray, p: Point, angle: number) {\n dynamicLayoutVertexArray.emplaceBack(p.x, p.y, angle);\n dynamicLayoutVertexArray.emplaceBack(p.x, p.y, angle);\n dynamicLayoutVertexArray.emplaceBack(p.x, p.y, angle);\n dynamicLayoutVertexArray.emplaceBack(p.x, p.y, angle);\n}\n\nfunction containsRTLText(formattedText: Formatted): boolean {\n for (const section of formattedText.sections) {\n if (stringContainsRTLText(section.text)) {\n return true;\n }\n }\n return false;\n}\n\nexport class SymbolBuffers {\n layoutVertexArray: SymbolLayoutArray;\n layoutVertexBuffer: VertexBuffer;\n\n indexArray: TriangleIndexArray;\n indexBuffer: IndexBuffer;\n\n programConfigurations: ProgramConfigurationSet;\n segments: SegmentVector;\n\n dynamicLayoutVertexArray: SymbolDynamicLayoutArray;\n dynamicLayoutVertexBuffer: VertexBuffer;\n\n opacityVertexArray: SymbolOpacityArray;\n opacityVertexBuffer: VertexBuffer;\n hasVisibleVertices: boolean;\n\n collisionVertexArray: CollisionVertexArray;\n collisionVertexBuffer: VertexBuffer;\n\n placedSymbolArray: PlacedSymbolArray;\n\n constructor(programConfigurations: ProgramConfigurationSet) {\n this.layoutVertexArray = new SymbolLayoutArray();\n this.indexArray = new TriangleIndexArray();\n this.programConfigurations = programConfigurations;\n this.segments = new SegmentVector();\n this.dynamicLayoutVertexArray = new SymbolDynamicLayoutArray();\n this.opacityVertexArray = new SymbolOpacityArray();\n this.hasVisibleVertices = false;\n this.placedSymbolArray = new PlacedSymbolArray();\n }\n\n isEmpty() {\n return this.layoutVertexArray.length === 0 &&\n this.indexArray.length === 0 &&\n this.dynamicLayoutVertexArray.length === 0 &&\n this.opacityVertexArray.length === 0;\n }\n\n upload(context: Context, dynamicIndexBuffer: boolean, upload?: boolean, update?: boolean) {\n if (this.isEmpty()) {\n return;\n }\n\n if (upload) {\n this.layoutVertexBuffer = context.createVertexBuffer(this.layoutVertexArray, symbolLayoutAttributes.members);\n this.indexBuffer = context.createIndexBuffer(this.indexArray, dynamicIndexBuffer);\n this.dynamicLayoutVertexBuffer = context.createVertexBuffer(this.dynamicLayoutVertexArray, dynamicLayoutAttributes.members, true);\n this.opacityVertexBuffer = context.createVertexBuffer(this.opacityVertexArray, shaderOpacityAttributes, true);\n // This is a performance hack so that we can write to opacityVertexArray with uint32s\n // even though the shaders read uint8s\n this.opacityVertexBuffer.itemSize = 1;\n }\n if (upload || update) {\n this.programConfigurations.upload(context);\n }\n }\n\n destroy() {\n if (!this.layoutVertexBuffer) return;\n this.layoutVertexBuffer.destroy();\n this.indexBuffer.destroy();\n this.programConfigurations.destroy();\n this.segments.destroy();\n this.dynamicLayoutVertexBuffer.destroy();\n this.opacityVertexBuffer.destroy();\n }\n}\n\nregister('SymbolBuffers', SymbolBuffers);\n\nclass CollisionBuffers {\n layoutVertexArray: StructArray;\n layoutAttributes: Array;\n layoutVertexBuffer: VertexBuffer;\n\n indexArray: TriangleIndexArray | LineIndexArray;\n indexBuffer: IndexBuffer;\n\n segments: SegmentVector;\n\n collisionVertexArray: CollisionVertexArray;\n collisionVertexBuffer: VertexBuffer;\n\n constructor(LayoutArray: {\n new (...args: any): StructArray;\n },\n layoutAttributes: Array,\n IndexArray: {\n new (...args: any): TriangleIndexArray | LineIndexArray;\n }) {\n this.layoutVertexArray = new LayoutArray();\n this.layoutAttributes = layoutAttributes;\n this.indexArray = new IndexArray();\n this.segments = new SegmentVector();\n this.collisionVertexArray = new CollisionVertexArray();\n }\n\n upload(context: Context) {\n this.layoutVertexBuffer = context.createVertexBuffer(this.layoutVertexArray, this.layoutAttributes);\n this.indexBuffer = context.createIndexBuffer(this.indexArray);\n this.collisionVertexBuffer = context.createVertexBuffer(this.collisionVertexArray, collisionVertexAttributes.members, true);\n }\n\n destroy() {\n if (!this.layoutVertexBuffer) return;\n this.layoutVertexBuffer.destroy();\n this.indexBuffer.destroy();\n this.segments.destroy();\n this.collisionVertexBuffer.destroy();\n }\n}\n\nregister('CollisionBuffers', CollisionBuffers);\n\n/**\n * @internal\n * Unlike other buckets, which simply implement #addFeature with type-specific\n * logic for (essentially) triangulating feature geometries, SymbolBucket\n * requires specialized behavior:\n *\n * 1. WorkerTile#parse(), the logical owner of the bucket creation process,\n * calls SymbolBucket#populate(), which resolves text and icon tokens on\n * each feature, adds each glyphs and symbols needed to the passed-in\n * collections options.glyphDependencies and options.iconDependencies, and\n * stores the feature data for use in subsequent step (this.features).\n *\n * 2. WorkerTile asynchronously requests from the main thread all of the glyphs\n * and icons needed (by this bucket and any others). When glyphs and icons\n * have been received, the WorkerTile creates a CollisionIndex and invokes:\n *\n * 3. performSymbolLayout(bucket, stacks, icons) perform texts shaping and\n * layout on a Symbol Bucket. This step populates:\n * `this.symbolInstances`: metadata on generated symbols\n * `this.collisionBoxArray`: collision data for use by foreground\n * `this.text`: SymbolBuffers for text symbols\n * `this.icons`: SymbolBuffers for icons\n * `this.iconCollisionBox`: Debug SymbolBuffers for icon collision boxes\n * `this.textCollisionBox`: Debug SymbolBuffers for text collision boxes\n * The results are sent to the foreground for rendering\n *\n * 4. placement.ts is run on the foreground,\n * and uses the CollisionIndex along with current camera settings to determine\n * which symbols can actually show on the map. Collided symbols are hidden\n * using a dynamic \"OpacityVertexArray\".\n */\nexport class SymbolBucket implements Bucket {\n static MAX_GLYPHS: number;\n static addDynamicAttributes: typeof addDynamicAttributes;\n\n collisionBoxArray: CollisionBoxArray;\n zoom: number;\n overscaling: number;\n layers: Array;\n layerIds: Array;\n stateDependentLayers: Array;\n stateDependentLayerIds: Array;\n\n index: number;\n sdfIcons: boolean;\n iconsInText: boolean;\n iconsNeedLinear: boolean;\n bucketInstanceId: number;\n justReloaded: boolean;\n hasPattern: boolean;\n\n textSizeData: SizeData;\n iconSizeData: SizeData;\n\n glyphOffsetArray: GlyphOffsetArray;\n lineVertexArray: SymbolLineVertexArray;\n features: Array;\n symbolInstances: SymbolInstanceArray;\n textAnchorOffsets: TextAnchorOffsetArray;\n collisionArrays: Array;\n sortKeyRanges: Array;\n pixelRatio: number;\n tilePixelRatio: number;\n compareText: {[_: string]: Array};\n fadeStartTime: number;\n sortFeaturesByKey: boolean;\n sortFeaturesByY: boolean;\n canOverlap: boolean;\n sortedAngle: number;\n featureSortOrder: Array;\n\n collisionCircleArray: Array;\n\n text: SymbolBuffers;\n icon: SymbolBuffers;\n textCollisionBox: CollisionBuffers;\n iconCollisionBox: CollisionBuffers;\n uploaded: boolean;\n sourceLayerIndex: number;\n sourceID: string;\n symbolInstanceIndexes: Array;\n writingModes: WritingMode[];\n allowVerticalPlacement: boolean;\n hasRTLText: boolean;\n\n constructor(options: BucketParameters) {\n this.collisionBoxArray = options.collisionBoxArray;\n this.zoom = options.zoom;\n this.overscaling = options.overscaling;\n this.layers = options.layers;\n this.layerIds = this.layers.map(layer => layer.id);\n this.index = options.index;\n this.pixelRatio = options.pixelRatio;\n this.sourceLayerIndex = options.sourceLayerIndex;\n this.hasPattern = false;\n this.hasRTLText = false;\n this.sortKeyRanges = [];\n\n this.collisionCircleArray = [];\n\n const layer = this.layers[0];\n const unevaluatedLayoutValues = layer._unevaluatedLayout._values;\n\n this.textSizeData = getSizeData(this.zoom, unevaluatedLayoutValues['text-size']);\n this.iconSizeData = getSizeData(this.zoom, unevaluatedLayoutValues['icon-size']);\n\n const layout = this.layers[0].layout;\n const sortKey = layout.get('symbol-sort-key');\n const zOrder = layout.get('symbol-z-order');\n this.canOverlap =\n getOverlapMode(layout, 'text-overlap', 'text-allow-overlap') !== 'never' ||\n getOverlapMode(layout, 'icon-overlap', 'icon-allow-overlap') !== 'never' ||\n layout.get('text-ignore-placement') ||\n layout.get('icon-ignore-placement');\n this.sortFeaturesByKey = zOrder !== 'viewport-y' && !sortKey.isConstant();\n const zOrderByViewportY = zOrder === 'viewport-y' || (zOrder === 'auto' && !this.sortFeaturesByKey);\n this.sortFeaturesByY = zOrderByViewportY && this.canOverlap;\n\n if (layout.get('symbol-placement') === 'point') {\n this.writingModes = layout.get('text-writing-mode').map(wm => WritingMode[wm]);\n }\n\n this.stateDependentLayerIds = this.layers.filter((l) => l.isStateDependent()).map((l) => l.id);\n\n this.sourceID = options.sourceID;\n }\n\n createArrays() {\n this.text = new SymbolBuffers(new ProgramConfigurationSet(this.layers, this.zoom, property => /^text/.test(property)));\n this.icon = new SymbolBuffers(new ProgramConfigurationSet(this.layers, this.zoom, property => /^icon/.test(property)));\n\n this.glyphOffsetArray = new GlyphOffsetArray();\n this.lineVertexArray = new SymbolLineVertexArray();\n this.symbolInstances = new SymbolInstanceArray();\n this.textAnchorOffsets = new TextAnchorOffsetArray();\n }\n\n private calculateGlyphDependencies(\n text: string,\n stack: {[_: number]: boolean},\n textAlongLine: boolean,\n allowVerticalPlacement: boolean,\n doesAllowVerticalWritingMode: boolean) {\n\n for (let i = 0; i < text.length; i++) {\n stack[text.charCodeAt(i)] = true;\n if ((textAlongLine || allowVerticalPlacement) && doesAllowVerticalWritingMode) {\n const verticalChar = verticalizedCharacterMap[text.charAt(i)];\n if (verticalChar) {\n stack[verticalChar.charCodeAt(0)] = true;\n }\n }\n }\n }\n\n populate(features: Array, options: PopulateParameters, canonical: CanonicalTileID) {\n const layer = this.layers[0];\n const layout = layer.layout;\n\n const textFont = layout.get('text-font');\n const textField = layout.get('text-field');\n const iconImage = layout.get('icon-image');\n const hasText =\n (textField.value.kind !== 'constant' ||\n (textField.value.value instanceof Formatted && !textField.value.value.isEmpty()) ||\n textField.value.value.toString().length > 0) &&\n (textFont.value.kind !== 'constant' || textFont.value.value.length > 0);\n // we should always resolve the icon-image value if the property was defined in the style\n // this allows us to fire the styleimagemissing event if image evaluation returns null\n // the only way to distinguish between null returned from a coalesce statement with no valid images\n // and null returned because icon-image wasn't defined is to check whether or not iconImage.parameters is an empty object\n const hasIcon = iconImage.value.kind !== 'constant' || !!iconImage.value.value || Object.keys(iconImage.parameters).length > 0;\n const symbolSortKey = layout.get('symbol-sort-key');\n\n this.features = [];\n\n if (!hasText && !hasIcon) {\n return;\n }\n\n const icons = options.iconDependencies;\n const stacks = options.glyphDependencies;\n const availableImages = options.availableImages;\n const globalProperties = new EvaluationParameters(this.zoom);\n\n for (const {feature, id, index, sourceLayerIndex} of features) {\n\n const needGeometry = layer._featureFilter.needGeometry;\n const evaluationFeature = toEvaluationFeature(feature, needGeometry);\n if (!layer._featureFilter.filter(globalProperties, evaluationFeature, canonical)) {\n continue;\n }\n\n if (!needGeometry) evaluationFeature.geometry = loadGeometry(feature);\n\n let text: Formatted | void;\n if (hasText) {\n // Expression evaluation will automatically coerce to Formatted\n // but plain string token evaluation skips that pathway so do the\n // conversion here.\n const resolvedTokens = layer.getValueAndResolveTokens('text-field', evaluationFeature, canonical, availableImages);\n const formattedText = Formatted.factory(resolvedTokens);\n\n // on this instance: if hasRTLText is already true, all future calls to containsRTLText can be skipped.\n const bucketHasRTLText = this.hasRTLText = (this.hasRTLText || containsRTLText(formattedText));\n if (\n !bucketHasRTLText || // non-rtl text so can proceed safely\n rtlWorkerPlugin.getRTLTextPluginStatus() === 'unavailable' || // We don't intend to lazy-load the rtl text plugin, so proceed with incorrect shaping\n bucketHasRTLText && rtlWorkerPlugin.isParsed() // Use the rtlText plugin to shape text\n ) {\n text = transformText(formattedText, layer, evaluationFeature);\n }\n }\n\n let icon: ResolvedImage;\n if (hasIcon) {\n // Expression evaluation will automatically coerce to Image\n // but plain string token evaluation skips that pathway so do the\n // conversion here.\n const resolvedTokens = layer.getValueAndResolveTokens('icon-image', evaluationFeature, canonical, availableImages);\n if (resolvedTokens instanceof ResolvedImage) {\n icon = resolvedTokens;\n } else {\n icon = ResolvedImage.fromString(resolvedTokens);\n }\n }\n\n if (!text && !icon) {\n continue;\n }\n const sortKey = this.sortFeaturesByKey ?\n symbolSortKey.evaluate(evaluationFeature, {}, canonical) :\n undefined;\n\n const symbolFeature: SymbolFeature = {\n id,\n text,\n icon,\n index,\n sourceLayerIndex,\n geometry: evaluationFeature.geometry,\n properties: feature.properties,\n type: vectorTileFeatureTypes[feature.type],\n sortKey\n };\n this.features.push(symbolFeature);\n\n if (icon) {\n icons[icon.name] = true;\n }\n\n if (text) {\n const fontStack = textFont.evaluate(evaluationFeature, {}, canonical).join(',');\n const textAlongLine = layout.get('text-rotation-alignment') !== 'viewport' && layout.get('symbol-placement') !== 'point';\n this.allowVerticalPlacement = this.writingModes && this.writingModes.indexOf(WritingMode.vertical) >= 0;\n for (const section of text.sections) {\n if (!section.image) {\n const doesAllowVerticalWritingMode = allowsVerticalWritingMode(text.toString());\n const sectionFont = section.fontStack || fontStack;\n const sectionStack = stacks[sectionFont] = stacks[sectionFont] || {};\n this.calculateGlyphDependencies(section.text, sectionStack, textAlongLine, this.allowVerticalPlacement, doesAllowVerticalWritingMode);\n } else {\n // Add section image to the list of dependencies.\n icons[section.image.name] = true;\n }\n }\n }\n }\n\n if (layout.get('symbol-placement') === 'line') {\n // Merge adjacent lines with the same text to improve labelling.\n // It's better to place labels on one long line than on many short segments.\n this.features = mergeLines(this.features);\n }\n\n if (this.sortFeaturesByKey) {\n this.features.sort((a, b) => {\n // a.sortKey is always a number when sortFeaturesByKey is true\n return (a.sortKey as number) - (b.sortKey as number);\n });\n }\n }\n\n update(states: FeatureStates, vtLayer: VectorTileLayer, imagePositions: {[_: string]: ImagePosition}) {\n if (!this.stateDependentLayers.length) return;\n this.text.programConfigurations.updatePaintArrays(states, vtLayer, this.layers, imagePositions);\n this.icon.programConfigurations.updatePaintArrays(states, vtLayer, this.layers, imagePositions);\n }\n\n isEmpty() {\n // When the bucket encounters only rtl-text but the plugin isn't loaded, no symbol instances will be created.\n // In order for the bucket to be serialized, and not discarded as an empty bucket both checks are necessary.\n return this.symbolInstances.length === 0 && !this.hasRTLText;\n }\n\n uploadPending() {\n return !this.uploaded || this.text.programConfigurations.needsUpload || this.icon.programConfigurations.needsUpload;\n }\n\n upload(context: Context) {\n if (!this.uploaded && this.hasDebugData()) {\n this.textCollisionBox.upload(context);\n this.iconCollisionBox.upload(context);\n }\n this.text.upload(context, this.sortFeaturesByY, !this.uploaded, this.text.programConfigurations.needsUpload);\n this.icon.upload(context, this.sortFeaturesByY, !this.uploaded, this.icon.programConfigurations.needsUpload);\n this.uploaded = true;\n }\n\n destroyDebugData() {\n this.textCollisionBox.destroy();\n this.iconCollisionBox.destroy();\n }\n\n destroy() {\n this.text.destroy();\n this.icon.destroy();\n\n if (this.hasDebugData()) {\n this.destroyDebugData();\n }\n }\n\n addToLineVertexArray(anchor: Anchor, line: Array) {\n const lineStartIndex = this.lineVertexArray.length;\n if (anchor.segment !== undefined) {\n let sumForwardLength = anchor.dist(line[anchor.segment + 1]);\n let sumBackwardLength = anchor.dist(line[anchor.segment]);\n const vertices = {};\n for (let i = anchor.segment + 1; i < line.length; i++) {\n vertices[i] = {x: line[i].x, y: line[i].y, tileUnitDistanceFromAnchor: sumForwardLength};\n if (i < line.length - 1) {\n sumForwardLength += line[i + 1].dist(line[i]);\n }\n }\n for (let i = anchor.segment || 0; i >= 0; i--) {\n vertices[i] = {x: line[i].x, y: line[i].y, tileUnitDistanceFromAnchor: sumBackwardLength};\n if (i > 0) {\n sumBackwardLength += line[i - 1].dist(line[i]);\n }\n }\n for (let i = 0; i < line.length; i++) {\n const vertex = vertices[i];\n this.lineVertexArray.emplaceBack(vertex.x, vertex.y, vertex.tileUnitDistanceFromAnchor);\n }\n }\n return {\n lineStartIndex,\n lineLength: this.lineVertexArray.length - lineStartIndex\n };\n }\n\n addSymbols(arrays: SymbolBuffers,\n quads: Array,\n sizeVertex: any,\n lineOffset: [number, number],\n alongLine: boolean,\n feature: SymbolFeature,\n writingMode: WritingMode,\n labelAnchor: Anchor,\n lineStartIndex: number,\n lineLength: number,\n associatedIconIndex: number,\n canonical: CanonicalTileID) {\n const indexArray = arrays.indexArray;\n const layoutVertexArray = arrays.layoutVertexArray;\n\n const segment = arrays.segments.prepareSegment(4 * quads.length, layoutVertexArray, indexArray, this.canOverlap ? feature.sortKey as number : undefined);\n const glyphOffsetArrayStart = this.glyphOffsetArray.length;\n const vertexStartIndex = segment.vertexLength;\n\n const angle = (this.allowVerticalPlacement && writingMode === WritingMode.vertical) ? Math.PI / 2 : 0;\n\n const sections = feature.text && feature.text.sections;\n\n for (let i = 0; i < quads.length; i++) {\n const {tl, tr, bl, br, tex, pixelOffsetTL, pixelOffsetBR, minFontScaleX, minFontScaleY, glyphOffset, isSDF, sectionIndex} = quads[i];\n const index = segment.vertexLength;\n\n const y = glyphOffset[1];\n addVertex(layoutVertexArray, labelAnchor.x, labelAnchor.y, tl.x, y + tl.y, tex.x, tex.y, sizeVertex, isSDF, pixelOffsetTL.x, pixelOffsetTL.y, minFontScaleX, minFontScaleY);\n addVertex(layoutVertexArray, labelAnchor.x, labelAnchor.y, tr.x, y + tr.y, tex.x + tex.w, tex.y, sizeVertex, isSDF, pixelOffsetBR.x, pixelOffsetTL.y, minFontScaleX, minFontScaleY);\n addVertex(layoutVertexArray, labelAnchor.x, labelAnchor.y, bl.x, y + bl.y, tex.x, tex.y + tex.h, sizeVertex, isSDF, pixelOffsetTL.x, pixelOffsetBR.y, minFontScaleX, minFontScaleY);\n addVertex(layoutVertexArray, labelAnchor.x, labelAnchor.y, br.x, y + br.y, tex.x + tex.w, tex.y + tex.h, sizeVertex, isSDF, pixelOffsetBR.x, pixelOffsetBR.y, minFontScaleX, minFontScaleY);\n\n addDynamicAttributes(arrays.dynamicLayoutVertexArray, labelAnchor, angle);\n\n indexArray.emplaceBack(index, index + 2, index + 1);\n indexArray.emplaceBack(index + 1, index + 2, index + 3);\n\n segment.vertexLength += 4;\n segment.primitiveLength += 2;\n\n this.glyphOffsetArray.emplaceBack(glyphOffset[0]);\n\n if (i === quads.length - 1 || sectionIndex !== quads[i + 1].sectionIndex) {\n arrays.programConfigurations.populatePaintArrays(layoutVertexArray.length, feature, feature.index, {}, canonical, sections && sections[sectionIndex]);\n }\n }\n\n arrays.placedSymbolArray.emplaceBack(\n labelAnchor.x, labelAnchor.y,\n glyphOffsetArrayStart,\n this.glyphOffsetArray.length - glyphOffsetArrayStart,\n vertexStartIndex,\n lineStartIndex,\n lineLength,\n labelAnchor.segment,\n sizeVertex ? sizeVertex[0] : 0,\n sizeVertex ? sizeVertex[1] : 0,\n lineOffset[0], lineOffset[1],\n writingMode,\n // placedOrientation is null initially; will be updated to horizontal(1)/vertical(2) if placed\n 0,\n false as unknown as number,\n // The crossTileID is only filled/used on the foreground for dynamic text anchors\n 0,\n associatedIconIndex\n );\n }\n\n _addCollisionDebugVertex(layoutVertexArray: StructArray, collisionVertexArray: StructArray, point: Point, anchorX: number, anchorY: number, extrude: Point) {\n collisionVertexArray.emplaceBack(0, 0);\n return layoutVertexArray.emplaceBack(\n // pos\n point.x,\n point.y,\n // a_anchor_pos\n anchorX,\n anchorY,\n // extrude\n Math.round(extrude.x),\n Math.round(extrude.y));\n }\n\n addCollisionDebugVertices(x1: number, y1: number, x2: number, y2: number, arrays: CollisionBuffers, boxAnchorPoint: Point, symbolInstance: SymbolInstance) {\n const segment = arrays.segments.prepareSegment(4, arrays.layoutVertexArray, arrays.indexArray);\n const index = segment.vertexLength;\n\n const layoutVertexArray = arrays.layoutVertexArray;\n const collisionVertexArray = arrays.collisionVertexArray;\n\n const anchorX = symbolInstance.anchorX;\n const anchorY = symbolInstance.anchorY;\n\n this._addCollisionDebugVertex(layoutVertexArray, collisionVertexArray, boxAnchorPoint, anchorX, anchorY, new Point(x1, y1));\n this._addCollisionDebugVertex(layoutVertexArray, collisionVertexArray, boxAnchorPoint, anchorX, anchorY, new Point(x2, y1));\n this._addCollisionDebugVertex(layoutVertexArray, collisionVertexArray, boxAnchorPoint, anchorX, anchorY, new Point(x2, y2));\n this._addCollisionDebugVertex(layoutVertexArray, collisionVertexArray, boxAnchorPoint, anchorX, anchorY, new Point(x1, y2));\n\n segment.vertexLength += 4;\n\n const indexArray = arrays.indexArray as LineIndexArray;\n indexArray.emplaceBack(index, index + 1);\n indexArray.emplaceBack(index + 1, index + 2);\n indexArray.emplaceBack(index + 2, index + 3);\n indexArray.emplaceBack(index + 3, index);\n\n segment.primitiveLength += 4;\n }\n\n addDebugCollisionBoxes(startIndex: number, endIndex: number, symbolInstance: SymbolInstance, isText: boolean) {\n for (let b = startIndex; b < endIndex; b++) {\n const box: CollisionBox = this.collisionBoxArray.get(b);\n const x1 = box.x1;\n const y1 = box.y1;\n const x2 = box.x2;\n const y2 = box.y2;\n\n this.addCollisionDebugVertices(x1, y1, x2, y2,\n isText ? this.textCollisionBox : this.iconCollisionBox,\n box.anchorPoint, symbolInstance);\n }\n }\n\n generateCollisionDebugBuffers() {\n if (this.hasDebugData()) {\n this.destroyDebugData();\n }\n\n this.textCollisionBox = new CollisionBuffers(CollisionBoxLayoutArray, collisionBoxLayout.members, LineIndexArray);\n this.iconCollisionBox = new CollisionBuffers(CollisionBoxLayoutArray, collisionBoxLayout.members, LineIndexArray);\n\n for (let i = 0; i < this.symbolInstances.length; i++) {\n const symbolInstance = this.symbolInstances.get(i);\n this.addDebugCollisionBoxes(symbolInstance.textBoxStartIndex, symbolInstance.textBoxEndIndex, symbolInstance, true);\n this.addDebugCollisionBoxes(symbolInstance.verticalTextBoxStartIndex, symbolInstance.verticalTextBoxEndIndex, symbolInstance, true);\n this.addDebugCollisionBoxes(symbolInstance.iconBoxStartIndex, symbolInstance.iconBoxEndIndex, symbolInstance, false);\n this.addDebugCollisionBoxes(symbolInstance.verticalIconBoxStartIndex, symbolInstance.verticalIconBoxEndIndex, symbolInstance, false);\n }\n }\n\n // These flat arrays are meant to be quicker to iterate over than the source\n // CollisionBoxArray\n _deserializeCollisionBoxesForSymbol(\n collisionBoxArray: CollisionBoxArray,\n textStartIndex: number,\n textEndIndex: number,\n verticalTextStartIndex: number,\n verticalTextEndIndex: number,\n iconStartIndex: number,\n iconEndIndex: number,\n verticalIconStartIndex: number,\n verticalIconEndIndex: number\n ): CollisionArrays {\n\n const collisionArrays = {} as CollisionArrays;\n for (let k = textStartIndex; k < textEndIndex; k++) {\n const box: CollisionBox = collisionBoxArray.get(k);\n collisionArrays.textBox = {x1: box.x1, y1: box.y1, x2: box.x2, y2: box.y2, anchorPointX: box.anchorPointX, anchorPointY: box.anchorPointY};\n collisionArrays.textFeatureIndex = box.featureIndex;\n break; // Only one box allowed per instance\n }\n for (let k = verticalTextStartIndex; k < verticalTextEndIndex; k++) {\n const box: CollisionBox = collisionBoxArray.get(k);\n collisionArrays.verticalTextBox = {x1: box.x1, y1: box.y1, x2: box.x2, y2: box.y2, anchorPointX: box.anchorPointX, anchorPointY: box.anchorPointY};\n collisionArrays.verticalTextFeatureIndex = box.featureIndex;\n break; // Only one box allowed per instance\n }\n for (let k = iconStartIndex; k < iconEndIndex; k++) {\n // An icon can only have one box now, so this indexing is a bit vestigial...\n const box: CollisionBox = collisionBoxArray.get(k);\n collisionArrays.iconBox = {x1: box.x1, y1: box.y1, x2: box.x2, y2: box.y2, anchorPointX: box.anchorPointX, anchorPointY: box.anchorPointY};\n collisionArrays.iconFeatureIndex = box.featureIndex;\n break; // Only one box allowed per instance\n }\n for (let k = verticalIconStartIndex; k < verticalIconEndIndex; k++) {\n // An icon can only have one box now, so this indexing is a bit vestigial...\n const box: CollisionBox = collisionBoxArray.get(k);\n collisionArrays.verticalIconBox = {x1: box.x1, y1: box.y1, x2: box.x2, y2: box.y2, anchorPointX: box.anchorPointX, anchorPointY: box.anchorPointY};\n collisionArrays.verticalIconFeatureIndex = box.featureIndex;\n break; // Only one box allowed per instance\n }\n return collisionArrays;\n }\n\n deserializeCollisionBoxes(collisionBoxArray: CollisionBoxArray) {\n this.collisionArrays = [];\n for (let i = 0; i < this.symbolInstances.length; i++) {\n const symbolInstance = this.symbolInstances.get(i);\n this.collisionArrays.push(this._deserializeCollisionBoxesForSymbol(\n collisionBoxArray,\n symbolInstance.textBoxStartIndex,\n symbolInstance.textBoxEndIndex,\n symbolInstance.verticalTextBoxStartIndex,\n symbolInstance.verticalTextBoxEndIndex,\n symbolInstance.iconBoxStartIndex,\n symbolInstance.iconBoxEndIndex,\n symbolInstance.verticalIconBoxStartIndex,\n symbolInstance.verticalIconBoxEndIndex\n ));\n }\n }\n\n hasTextData() {\n return this.text.segments.get().length > 0;\n }\n\n hasIconData() {\n return this.icon.segments.get().length > 0;\n }\n\n hasDebugData() {\n return this.textCollisionBox && this.iconCollisionBox;\n }\n\n hasTextCollisionBoxData() {\n return this.hasDebugData() && this.textCollisionBox.segments.get().length > 0;\n }\n\n hasIconCollisionBoxData() {\n return this.hasDebugData() && this.iconCollisionBox.segments.get().length > 0;\n }\n\n addIndicesForPlacedSymbol(iconOrText: SymbolBuffers, placedSymbolIndex: number) {\n const placedSymbol = iconOrText.placedSymbolArray.get(placedSymbolIndex);\n\n const endIndex = placedSymbol.vertexStartIndex + placedSymbol.numGlyphs * 4;\n for (let vertexIndex = placedSymbol.vertexStartIndex; vertexIndex < endIndex; vertexIndex += 4) {\n iconOrText.indexArray.emplaceBack(vertexIndex, vertexIndex + 2, vertexIndex + 1);\n iconOrText.indexArray.emplaceBack(vertexIndex + 1, vertexIndex + 2, vertexIndex + 3);\n }\n }\n\n getSortedSymbolIndexes(angle: number) {\n if (this.sortedAngle === angle && this.symbolInstanceIndexes !== undefined) {\n return this.symbolInstanceIndexes;\n }\n const sin = Math.sin(angle);\n const cos = Math.cos(angle);\n const rotatedYs = [];\n const featureIndexes = [];\n const result = [];\n\n for (let i = 0; i < this.symbolInstances.length; ++i) {\n result.push(i);\n const symbolInstance = this.symbolInstances.get(i);\n rotatedYs.push(Math.round(sin * symbolInstance.anchorX + cos * symbolInstance.anchorY) | 0);\n featureIndexes.push(symbolInstance.featureIndex);\n }\n\n result.sort((aIndex, bIndex) => {\n return (rotatedYs[aIndex] - rotatedYs[bIndex]) ||\n (featureIndexes[bIndex] - featureIndexes[aIndex]);\n });\n\n return result;\n }\n\n addToSortKeyRanges(symbolInstanceIndex: number, sortKey: number) {\n const last = this.sortKeyRanges[this.sortKeyRanges.length - 1];\n if (last && last.sortKey === sortKey) {\n last.symbolInstanceEnd = symbolInstanceIndex + 1;\n } else {\n this.sortKeyRanges.push({\n sortKey,\n symbolInstanceStart: symbolInstanceIndex,\n symbolInstanceEnd: symbolInstanceIndex + 1\n });\n }\n }\n\n sortFeatures(angle: number) {\n if (!this.sortFeaturesByY) return;\n if (this.sortedAngle === angle) return;\n\n // The current approach to sorting doesn't sort across segments so don't try.\n // Sorting within segments separately seemed not to be worth the complexity.\n if (this.text.segments.get().length > 1 || this.icon.segments.get().length > 1) return;\n\n // If the symbols are allowed to overlap sort them by their vertical screen position.\n // The index array buffer is rewritten to reference the (unchanged) vertices in the\n // sorted order.\n\n // To avoid sorting the actual symbolInstance array we sort an array of indexes.\n this.symbolInstanceIndexes = this.getSortedSymbolIndexes(angle);\n this.sortedAngle = angle;\n\n this.text.indexArray.clear();\n this.icon.indexArray.clear();\n\n this.featureSortOrder = [];\n\n for (const i of this.symbolInstanceIndexes) {\n const symbolInstance = this.symbolInstances.get(i);\n this.featureSortOrder.push(symbolInstance.featureIndex);\n\n [\n symbolInstance.rightJustifiedTextSymbolIndex,\n symbolInstance.centerJustifiedTextSymbolIndex,\n symbolInstance.leftJustifiedTextSymbolIndex\n ].forEach((index, i, array) => {\n // Only add a given index the first time it shows up,\n // to avoid duplicate opacity entries when multiple justifications\n // share the same glyphs.\n if (index >= 0 && array.indexOf(index) === i) {\n this.addIndicesForPlacedSymbol(this.text, index);\n }\n });\n\n if (symbolInstance.verticalPlacedTextSymbolIndex >= 0) {\n this.addIndicesForPlacedSymbol(this.text, symbolInstance.verticalPlacedTextSymbolIndex);\n }\n\n if (symbolInstance.placedIconSymbolIndex >= 0) {\n this.addIndicesForPlacedSymbol(this.icon, symbolInstance.placedIconSymbolIndex);\n }\n\n if (symbolInstance.verticalPlacedIconSymbolIndex >= 0) {\n this.addIndicesForPlacedSymbol(this.icon, symbolInstance.verticalPlacedIconSymbolIndex);\n }\n }\n\n if (this.text.indexBuffer) this.text.indexBuffer.updateData(this.text.indexArray);\n if (this.icon.indexBuffer) this.icon.indexBuffer.updateData(this.icon.indexArray);\n }\n}\n\nregister('SymbolBucket', SymbolBucket, {\n omit: ['layers', 'collisionBoxArray', 'features', 'compareText']\n});\n\n// this constant is based on the size of StructArray indexes used in a symbol\n// bucket--namely, glyphOffsetArrayStart\n// eg the max valid UInt16 is 65,535\n// See https://github.com/mapbox/mapbox-gl-js/issues/2907 for motivation\n// lineStartIndex and textBoxStartIndex could potentially be concerns\n// but we expect there to be many fewer boxes/lines than glyphs\nSymbolBucket.MAX_GLYPHS = 65535;\n\nSymbolBucket.addDynamicAttributes = addDynamicAttributes;\n\nexport {addDynamicAttributes};\n","import type {SymbolFeature} from '../data/bucket/symbol_bucket';\n\nexport function mergeLines(features: Array): Array {\n const leftIndex: {[_: string]: number} = {};\n const rightIndex: {[_: string]: number} = {};\n const mergedFeatures = [];\n let mergedIndex = 0;\n\n function add(k) {\n mergedFeatures.push(features[k]);\n mergedIndex++;\n }\n\n function mergeFromRight(leftKey: string, rightKey: string, geom) {\n const i = rightIndex[leftKey];\n delete rightIndex[leftKey];\n rightIndex[rightKey] = i;\n\n mergedFeatures[i].geometry[0].pop();\n mergedFeatures[i].geometry[0] = mergedFeatures[i].geometry[0].concat(geom[0]);\n return i;\n }\n\n function mergeFromLeft(leftKey: string, rightKey: string, geom) {\n const i = leftIndex[rightKey];\n delete leftIndex[rightKey];\n leftIndex[leftKey] = i;\n\n mergedFeatures[i].geometry[0].shift();\n mergedFeatures[i].geometry[0] = geom[0].concat(mergedFeatures[i].geometry[0]);\n return i;\n }\n\n function getKey(text, geom, onRight?) {\n const point = onRight ? geom[0][geom[0].length - 1] : geom[0][0];\n return `${text}:${point.x}:${point.y}`;\n }\n\n for (let k = 0; k < features.length; k++) {\n const feature = features[k];\n const geom = feature.geometry;\n const text = feature.text ? feature.text.toString() : null;\n\n if (!text) {\n add(k);\n continue;\n }\n\n const leftKey = getKey(text, geom),\n rightKey = getKey(text, geom, true);\n\n if ((leftKey in rightIndex) && (rightKey in leftIndex) && (rightIndex[leftKey] !== leftIndex[rightKey])) {\n // found lines with the same text adjacent to both ends of the current line, merge all three\n const j = mergeFromLeft(leftKey, rightKey, geom);\n const i = mergeFromRight(leftKey, rightKey, mergedFeatures[j].geometry);\n\n delete leftIndex[leftKey];\n delete rightIndex[rightKey];\n\n rightIndex[getKey(text, mergedFeatures[i].geometry, true)] = i;\n mergedFeatures[j].geometry = null;\n\n } else if (leftKey in rightIndex) {\n // found mergeable line adjacent to the start of the current line, merge\n mergeFromRight(leftKey, rightKey, geom);\n\n } else if (rightKey in leftIndex) {\n // found mergeable line adjacent to the end of the current line, merge\n mergeFromLeft(leftKey, rightKey, geom);\n\n } else {\n // no adjacent lines, add as a new item\n add(k);\n leftIndex[leftKey] = mergedIndex - 1;\n rightIndex[rightKey] = mergedIndex - 1;\n }\n }\n\n return mergedFeatures.filter((f) => f.geometry);\n}\n","// This file is generated. Edit build/generate-style-code.ts, then run 'npm run codegen'.\n/* eslint-disable */\n\nimport {latest as styleSpec} from '@maplibre/maplibre-gl-style-spec';\n\nimport {\n Properties,\n DataConstantProperty,\n DataDrivenProperty,\n CrossFadedDataDrivenProperty,\n CrossFadedProperty,\n ColorRampProperty,\n PossiblyEvaluatedPropertyValue,\n CrossFaded\n} from '../properties';\n\nimport type {Color, Formatted, Padding, ResolvedImage, VariableAnchorOffsetCollection} from '@maplibre/maplibre-gl-style-spec';\nimport {StylePropertySpecification} from '@maplibre/maplibre-gl-style-spec';\n\nimport {\n ColorType\n } from '@maplibre/maplibre-gl-style-spec';\n \nexport type SymbolLayoutProps = {\n \"symbol-placement\": DataConstantProperty<\"point\" | \"line\" | \"line-center\">,\n \"symbol-spacing\": DataConstantProperty,\n \"symbol-avoid-edges\": DataConstantProperty,\n \"symbol-sort-key\": DataDrivenProperty,\n \"symbol-z-order\": DataConstantProperty<\"auto\" | \"viewport-y\" | \"source\">,\n \"icon-allow-overlap\": DataConstantProperty,\n \"icon-overlap\": DataConstantProperty<\"never\" | \"always\" | \"cooperative\">,\n \"icon-ignore-placement\": DataConstantProperty,\n \"icon-optional\": DataConstantProperty,\n \"icon-rotation-alignment\": DataConstantProperty<\"map\" | \"viewport\" | \"auto\">,\n \"icon-size\": DataDrivenProperty,\n \"icon-text-fit\": DataConstantProperty<\"none\" | \"width\" | \"height\" | \"both\">,\n \"icon-text-fit-padding\": DataConstantProperty<[number, number, number, number]>,\n \"icon-image\": DataDrivenProperty,\n \"icon-rotate\": DataDrivenProperty,\n \"icon-padding\": DataDrivenProperty,\n \"icon-keep-upright\": DataConstantProperty,\n \"icon-offset\": DataDrivenProperty<[number, number]>,\n \"icon-anchor\": DataDrivenProperty<\"center\" | \"left\" | \"right\" | \"top\" | \"bottom\" | \"top-left\" | \"top-right\" | \"bottom-left\" | \"bottom-right\">,\n \"icon-pitch-alignment\": DataConstantProperty<\"map\" | \"viewport\" | \"auto\">,\n \"text-pitch-alignment\": DataConstantProperty<\"map\" | \"viewport\" | \"auto\">,\n \"text-rotation-alignment\": DataConstantProperty<\"map\" | \"viewport\" | \"viewport-glyph\" | \"auto\">,\n \"text-field\": DataDrivenProperty,\n \"text-font\": DataDrivenProperty>,\n \"text-size\": DataDrivenProperty,\n \"text-max-width\": DataDrivenProperty,\n \"text-line-height\": DataConstantProperty,\n \"text-letter-spacing\": DataDrivenProperty,\n \"text-justify\": DataDrivenProperty<\"auto\" | \"left\" | \"center\" | \"right\">,\n \"text-radial-offset\": DataDrivenProperty,\n \"text-variable-anchor\": DataConstantProperty>,\n \"text-variable-anchor-offset\": DataDrivenProperty,\n \"text-anchor\": DataDrivenProperty<\"center\" | \"left\" | \"right\" | \"top\" | \"bottom\" | \"top-left\" | \"top-right\" | \"bottom-left\" | \"bottom-right\">,\n \"text-max-angle\": DataConstantProperty,\n \"text-writing-mode\": DataConstantProperty>,\n \"text-rotate\": DataDrivenProperty,\n \"text-padding\": DataConstantProperty,\n \"text-keep-upright\": DataConstantProperty,\n \"text-transform\": DataDrivenProperty<\"none\" | \"uppercase\" | \"lowercase\">,\n \"text-offset\": DataDrivenProperty<[number, number]>,\n \"text-allow-overlap\": DataConstantProperty,\n \"text-overlap\": DataConstantProperty<\"never\" | \"always\" | \"cooperative\">,\n \"text-ignore-placement\": DataConstantProperty,\n \"text-optional\": DataConstantProperty,\n};\n\nexport type SymbolLayoutPropsPossiblyEvaluated = {\n \"symbol-placement\": \"point\" | \"line\" | \"line-center\",\n \"symbol-spacing\": number,\n \"symbol-avoid-edges\": boolean,\n \"symbol-sort-key\": PossiblyEvaluatedPropertyValue,\n \"symbol-z-order\": \"auto\" | \"viewport-y\" | \"source\",\n \"icon-allow-overlap\": boolean,\n \"icon-overlap\": \"never\" | \"always\" | \"cooperative\",\n \"icon-ignore-placement\": boolean,\n \"icon-optional\": boolean,\n \"icon-rotation-alignment\": \"map\" | \"viewport\" | \"auto\",\n \"icon-size\": PossiblyEvaluatedPropertyValue,\n \"icon-text-fit\": \"none\" | \"width\" | \"height\" | \"both\",\n \"icon-text-fit-padding\": [number, number, number, number],\n \"icon-image\": PossiblyEvaluatedPropertyValue,\n \"icon-rotate\": PossiblyEvaluatedPropertyValue,\n \"icon-padding\": PossiblyEvaluatedPropertyValue,\n \"icon-keep-upright\": boolean,\n \"icon-offset\": PossiblyEvaluatedPropertyValue<[number, number]>,\n \"icon-anchor\": PossiblyEvaluatedPropertyValue<\"center\" | \"left\" | \"right\" | \"top\" | \"bottom\" | \"top-left\" | \"top-right\" | \"bottom-left\" | \"bottom-right\">,\n \"icon-pitch-alignment\": \"map\" | \"viewport\" | \"auto\",\n \"text-pitch-alignment\": \"map\" | \"viewport\" | \"auto\",\n \"text-rotation-alignment\": \"map\" | \"viewport\" | \"viewport-glyph\" | \"auto\",\n \"text-field\": PossiblyEvaluatedPropertyValue,\n \"text-font\": PossiblyEvaluatedPropertyValue>,\n \"text-size\": PossiblyEvaluatedPropertyValue,\n \"text-max-width\": PossiblyEvaluatedPropertyValue,\n \"text-line-height\": number,\n \"text-letter-spacing\": PossiblyEvaluatedPropertyValue,\n \"text-justify\": PossiblyEvaluatedPropertyValue<\"auto\" | \"left\" | \"center\" | \"right\">,\n \"text-radial-offset\": PossiblyEvaluatedPropertyValue,\n \"text-variable-anchor\": Array<\"center\" | \"left\" | \"right\" | \"top\" | \"bottom\" | \"top-left\" | \"top-right\" | \"bottom-left\" | \"bottom-right\">,\n \"text-variable-anchor-offset\": PossiblyEvaluatedPropertyValue,\n \"text-anchor\": PossiblyEvaluatedPropertyValue<\"center\" | \"left\" | \"right\" | \"top\" | \"bottom\" | \"top-left\" | \"top-right\" | \"bottom-left\" | \"bottom-right\">,\n \"text-max-angle\": number,\n \"text-writing-mode\": Array<\"horizontal\" | \"vertical\">,\n \"text-rotate\": PossiblyEvaluatedPropertyValue,\n \"text-padding\": number,\n \"text-keep-upright\": boolean,\n \"text-transform\": PossiblyEvaluatedPropertyValue<\"none\" | \"uppercase\" | \"lowercase\">,\n \"text-offset\": PossiblyEvaluatedPropertyValue<[number, number]>,\n \"text-allow-overlap\": boolean,\n \"text-overlap\": \"never\" | \"always\" | \"cooperative\",\n \"text-ignore-placement\": boolean,\n \"text-optional\": boolean,\n};\n\nlet layout: Properties;\nconst getLayout = () => layout = layout || new Properties({\n \"symbol-placement\": new DataConstantProperty(styleSpec[\"layout_symbol\"][\"symbol-placement\"] as any as StylePropertySpecification),\n \"symbol-spacing\": new DataConstantProperty(styleSpec[\"layout_symbol\"][\"symbol-spacing\"] as any as StylePropertySpecification),\n \"symbol-avoid-edges\": new DataConstantProperty(styleSpec[\"layout_symbol\"][\"symbol-avoid-edges\"] as any as StylePropertySpecification),\n \"symbol-sort-key\": new DataDrivenProperty(styleSpec[\"layout_symbol\"][\"symbol-sort-key\"] as any as StylePropertySpecification),\n \"symbol-z-order\": new DataConstantProperty(styleSpec[\"layout_symbol\"][\"symbol-z-order\"] as any as StylePropertySpecification),\n \"icon-allow-overlap\": new DataConstantProperty(styleSpec[\"layout_symbol\"][\"icon-allow-overlap\"] as any as StylePropertySpecification),\n \"icon-overlap\": new DataConstantProperty(styleSpec[\"layout_symbol\"][\"icon-overlap\"] as any as StylePropertySpecification),\n \"icon-ignore-placement\": new DataConstantProperty(styleSpec[\"layout_symbol\"][\"icon-ignore-placement\"] as any as StylePropertySpecification),\n \"icon-optional\": new DataConstantProperty(styleSpec[\"layout_symbol\"][\"icon-optional\"] as any as StylePropertySpecification),\n \"icon-rotation-alignment\": new DataConstantProperty(styleSpec[\"layout_symbol\"][\"icon-rotation-alignment\"] as any as StylePropertySpecification),\n \"icon-size\": new DataDrivenProperty(styleSpec[\"layout_symbol\"][\"icon-size\"] as any as StylePropertySpecification),\n \"icon-text-fit\": new DataConstantProperty(styleSpec[\"layout_symbol\"][\"icon-text-fit\"] as any as StylePropertySpecification),\n \"icon-text-fit-padding\": new DataConstantProperty(styleSpec[\"layout_symbol\"][\"icon-text-fit-padding\"] as any as StylePropertySpecification),\n \"icon-image\": new DataDrivenProperty(styleSpec[\"layout_symbol\"][\"icon-image\"] as any as StylePropertySpecification),\n \"icon-rotate\": new DataDrivenProperty(styleSpec[\"layout_symbol\"][\"icon-rotate\"] as any as StylePropertySpecification),\n \"icon-padding\": new DataDrivenProperty(styleSpec[\"layout_symbol\"][\"icon-padding\"] as any as StylePropertySpecification),\n \"icon-keep-upright\": new DataConstantProperty(styleSpec[\"layout_symbol\"][\"icon-keep-upright\"] as any as StylePropertySpecification),\n \"icon-offset\": new DataDrivenProperty(styleSpec[\"layout_symbol\"][\"icon-offset\"] as any as StylePropertySpecification),\n \"icon-anchor\": new DataDrivenProperty(styleSpec[\"layout_symbol\"][\"icon-anchor\"] as any as StylePropertySpecification),\n \"icon-pitch-alignment\": new DataConstantProperty(styleSpec[\"layout_symbol\"][\"icon-pitch-alignment\"] as any as StylePropertySpecification),\n \"text-pitch-alignment\": new DataConstantProperty(styleSpec[\"layout_symbol\"][\"text-pitch-alignment\"] as any as StylePropertySpecification),\n \"text-rotation-alignment\": new DataConstantProperty(styleSpec[\"layout_symbol\"][\"text-rotation-alignment\"] as any as StylePropertySpecification),\n \"text-field\": new DataDrivenProperty(styleSpec[\"layout_symbol\"][\"text-field\"] as any as StylePropertySpecification),\n \"text-font\": new DataDrivenProperty(styleSpec[\"layout_symbol\"][\"text-font\"] as any as StylePropertySpecification),\n \"text-size\": new DataDrivenProperty(styleSpec[\"layout_symbol\"][\"text-size\"] as any as StylePropertySpecification),\n \"text-max-width\": new DataDrivenProperty(styleSpec[\"layout_symbol\"][\"text-max-width\"] as any as StylePropertySpecification),\n \"text-line-height\": new DataConstantProperty(styleSpec[\"layout_symbol\"][\"text-line-height\"] as any as StylePropertySpecification),\n \"text-letter-spacing\": new DataDrivenProperty(styleSpec[\"layout_symbol\"][\"text-letter-spacing\"] as any as StylePropertySpecification),\n \"text-justify\": new DataDrivenProperty(styleSpec[\"layout_symbol\"][\"text-justify\"] as any as StylePropertySpecification),\n \"text-radial-offset\": new DataDrivenProperty(styleSpec[\"layout_symbol\"][\"text-radial-offset\"] as any as StylePropertySpecification),\n \"text-variable-anchor\": new DataConstantProperty(styleSpec[\"layout_symbol\"][\"text-variable-anchor\"] as any as StylePropertySpecification),\n \"text-variable-anchor-offset\": new DataDrivenProperty(styleSpec[\"layout_symbol\"][\"text-variable-anchor-offset\"] as any as StylePropertySpecification),\n \"text-anchor\": new DataDrivenProperty(styleSpec[\"layout_symbol\"][\"text-anchor\"] as any as StylePropertySpecification),\n \"text-max-angle\": new DataConstantProperty(styleSpec[\"layout_symbol\"][\"text-max-angle\"] as any as StylePropertySpecification),\n \"text-writing-mode\": new DataConstantProperty(styleSpec[\"layout_symbol\"][\"text-writing-mode\"] as any as StylePropertySpecification),\n \"text-rotate\": new DataDrivenProperty(styleSpec[\"layout_symbol\"][\"text-rotate\"] as any as StylePropertySpecification),\n \"text-padding\": new DataConstantProperty(styleSpec[\"layout_symbol\"][\"text-padding\"] as any as StylePropertySpecification),\n \"text-keep-upright\": new DataConstantProperty(styleSpec[\"layout_symbol\"][\"text-keep-upright\"] as any as StylePropertySpecification),\n \"text-transform\": new DataDrivenProperty(styleSpec[\"layout_symbol\"][\"text-transform\"] as any as StylePropertySpecification),\n \"text-offset\": new DataDrivenProperty(styleSpec[\"layout_symbol\"][\"text-offset\"] as any as StylePropertySpecification),\n \"text-allow-overlap\": new DataConstantProperty(styleSpec[\"layout_symbol\"][\"text-allow-overlap\"] as any as StylePropertySpecification),\n \"text-overlap\": new DataConstantProperty(styleSpec[\"layout_symbol\"][\"text-overlap\"] as any as StylePropertySpecification),\n \"text-ignore-placement\": new DataConstantProperty(styleSpec[\"layout_symbol\"][\"text-ignore-placement\"] as any as StylePropertySpecification),\n \"text-optional\": new DataConstantProperty(styleSpec[\"layout_symbol\"][\"text-optional\"] as any as StylePropertySpecification),\n});\n\nexport type SymbolPaintProps = {\n \"icon-opacity\": DataDrivenProperty,\n \"icon-color\": DataDrivenProperty,\n \"icon-halo-color\": DataDrivenProperty,\n \"icon-halo-width\": DataDrivenProperty,\n \"icon-halo-blur\": DataDrivenProperty,\n \"icon-translate\": DataConstantProperty<[number, number]>,\n \"icon-translate-anchor\": DataConstantProperty<\"map\" | \"viewport\">,\n \"text-opacity\": DataDrivenProperty,\n \"text-color\": DataDrivenProperty,\n \"text-halo-color\": DataDrivenProperty,\n \"text-halo-width\": DataDrivenProperty,\n \"text-halo-blur\": DataDrivenProperty,\n \"text-translate\": DataConstantProperty<[number, number]>,\n \"text-translate-anchor\": DataConstantProperty<\"map\" | \"viewport\">,\n};\n\nexport type SymbolPaintPropsPossiblyEvaluated = {\n \"icon-opacity\": PossiblyEvaluatedPropertyValue,\n \"icon-color\": PossiblyEvaluatedPropertyValue,\n \"icon-halo-color\": PossiblyEvaluatedPropertyValue,\n \"icon-halo-width\": PossiblyEvaluatedPropertyValue,\n \"icon-halo-blur\": PossiblyEvaluatedPropertyValue,\n \"icon-translate\": [number, number],\n \"icon-translate-anchor\": \"map\" | \"viewport\",\n \"text-opacity\": PossiblyEvaluatedPropertyValue,\n \"text-color\": PossiblyEvaluatedPropertyValue,\n \"text-halo-color\": PossiblyEvaluatedPropertyValue,\n \"text-halo-width\": PossiblyEvaluatedPropertyValue,\n \"text-halo-blur\": PossiblyEvaluatedPropertyValue,\n \"text-translate\": [number, number],\n \"text-translate-anchor\": \"map\" | \"viewport\",\n};\n\nlet paint: Properties;\nconst getPaint = () => paint = paint || new Properties({\n \"icon-opacity\": new DataDrivenProperty(styleSpec[\"paint_symbol\"][\"icon-opacity\"] as any as StylePropertySpecification),\n \"icon-color\": new DataDrivenProperty(styleSpec[\"paint_symbol\"][\"icon-color\"] as any as StylePropertySpecification),\n \"icon-halo-color\": new DataDrivenProperty(styleSpec[\"paint_symbol\"][\"icon-halo-color\"] as any as StylePropertySpecification),\n \"icon-halo-width\": new DataDrivenProperty(styleSpec[\"paint_symbol\"][\"icon-halo-width\"] as any as StylePropertySpecification),\n \"icon-halo-blur\": new DataDrivenProperty(styleSpec[\"paint_symbol\"][\"icon-halo-blur\"] as any as StylePropertySpecification),\n \"icon-translate\": new DataConstantProperty(styleSpec[\"paint_symbol\"][\"icon-translate\"] as any as StylePropertySpecification),\n \"icon-translate-anchor\": new DataConstantProperty(styleSpec[\"paint_symbol\"][\"icon-translate-anchor\"] as any as StylePropertySpecification),\n \"text-opacity\": new DataDrivenProperty(styleSpec[\"paint_symbol\"][\"text-opacity\"] as any as StylePropertySpecification),\n \"text-color\": new DataDrivenProperty(styleSpec[\"paint_symbol\"][\"text-color\"] as any as StylePropertySpecification, { runtimeType: ColorType, getOverride: (o) => o.textColor, hasOverride: (o) => !!o.textColor }),\n \"text-halo-color\": new DataDrivenProperty(styleSpec[\"paint_symbol\"][\"text-halo-color\"] as any as StylePropertySpecification),\n \"text-halo-width\": new DataDrivenProperty(styleSpec[\"paint_symbol\"][\"text-halo-width\"] as any as StylePropertySpecification),\n \"text-halo-blur\": new DataDrivenProperty(styleSpec[\"paint_symbol\"][\"text-halo-blur\"] as any as StylePropertySpecification),\n \"text-translate\": new DataConstantProperty(styleSpec[\"paint_symbol\"][\"text-translate\"] as any as StylePropertySpecification),\n \"text-translate-anchor\": new DataConstantProperty(styleSpec[\"paint_symbol\"][\"text-translate-anchor\"] as any as StylePropertySpecification),\n});\n\nexport default ({ get paint() { return getPaint() }, get layout() { return getLayout() } });","import type {Expression, EvaluationContext, Type, ZoomConstantExpression} from '@maplibre/maplibre-gl-style-spec';\nimport {NullType} from '@maplibre/maplibre-gl-style-spec';\nimport {type PossiblyEvaluatedPropertyValue} from './properties';\nimport {register} from '../util/web_worker_transfer';\n\n// This is an internal expression class. It is only used in GL JS and\n// has GL JS dependencies which can break the standalone style-spec module\nexport class FormatSectionOverride implements Expression {\n type: Type;\n defaultValue: PossiblyEvaluatedPropertyValue;\n\n constructor(defaultValue: PossiblyEvaluatedPropertyValue) {\n if (defaultValue.property.overrides === undefined) throw new Error('overrides must be provided to instantiate FormatSectionOverride class');\n this.type = defaultValue.property.overrides ? defaultValue.property.overrides.runtimeType : NullType;\n this.defaultValue = defaultValue;\n }\n\n evaluate(ctx: EvaluationContext) {\n if (ctx.formattedSection) {\n const overrides = this.defaultValue.property.overrides;\n if (overrides && overrides.hasOverride(ctx.formattedSection)) {\n return overrides.getOverride(ctx.formattedSection);\n }\n }\n\n if (ctx.feature && ctx.featureState) {\n return this.defaultValue.evaluate(ctx.feature, ctx.featureState);\n }\n\n return this.defaultValue.property.specification.default;\n }\n\n eachChild(fn: (_: Expression) => void) {\n if (!this.defaultValue.isConstant()) {\n const expr: ZoomConstantExpression<'source'> = (this.defaultValue.value as any);\n fn(expr._styleExpression.expression);\n }\n }\n\n // Cannot be statically evaluated, as the output depends on the evaluation context.\n outputDefined() {\n return false;\n }\n\n serialize() {\n return null;\n }\n}\n\nregister('FormatSectionOverride', FormatSectionOverride, {omit: ['defaultValue']});\n","import {StyleLayer} from '../style_layer';\n\nimport {SymbolBucket, type SymbolFeature} from '../../data/bucket/symbol_bucket';\nimport {resolveTokens} from '../../util/resolve_tokens';\nimport properties, {type SymbolLayoutPropsPossiblyEvaluated, type SymbolPaintPropsPossiblyEvaluated} from './symbol_style_layer_properties.g';\n\nimport {\n type Transitionable,\n type Transitioning,\n type Layout,\n type PossiblyEvaluated,\n PossiblyEvaluatedPropertyValue,\n type PropertyValue\n} from '../properties';\n\nimport {\n isExpression,\n StyleExpression,\n ZoomConstantExpression,\n ZoomDependentExpression,\n FormattedType,\n typeOf,\n Formatted,\n FormatExpression,\n Literal} from '@maplibre/maplibre-gl-style-spec';\n\nimport type {BucketParameters} from '../../data/bucket';\nimport type {SymbolLayoutProps, SymbolPaintProps} from './symbol_style_layer_properties.g';\nimport type {EvaluationParameters} from '../evaluation_parameters';\nimport type {Expression, Feature, SourceExpression, LayerSpecification} from '@maplibre/maplibre-gl-style-spec';\nimport type {CanonicalTileID} from '../../source/tile_id';\nimport {FormatSectionOverride} from '../format_section_override';\n\nexport const isSymbolStyleLayer = (layer: StyleLayer): layer is SymbolStyleLayer => layer.type === 'symbol';\n\nexport class SymbolStyleLayer extends StyleLayer {\n _unevaluatedLayout: Layout;\n layout: PossiblyEvaluated;\n\n _transitionablePaint: Transitionable;\n _transitioningPaint: Transitioning;\n paint: PossiblyEvaluated;\n\n constructor(layer: LayerSpecification) {\n super(layer, properties);\n }\n\n recalculate(parameters: EvaluationParameters, availableImages: Array) {\n super.recalculate(parameters, availableImages);\n\n if (this.layout.get('icon-rotation-alignment') === 'auto') {\n if (this.layout.get('symbol-placement') !== 'point') {\n this.layout._values['icon-rotation-alignment'] = 'map';\n } else {\n this.layout._values['icon-rotation-alignment'] = 'viewport';\n }\n }\n\n if (this.layout.get('text-rotation-alignment') === 'auto') {\n if (this.layout.get('symbol-placement') !== 'point') {\n this.layout._values['text-rotation-alignment'] = 'map';\n } else {\n this.layout._values['text-rotation-alignment'] = 'viewport';\n }\n }\n\n // If unspecified, `*-pitch-alignment` inherits `*-rotation-alignment`\n if (this.layout.get('text-pitch-alignment') === 'auto') {\n this.layout._values['text-pitch-alignment'] = this.layout.get('text-rotation-alignment') === 'map' ? 'map' : 'viewport';\n }\n if (this.layout.get('icon-pitch-alignment') === 'auto') {\n this.layout._values['icon-pitch-alignment'] = this.layout.get('icon-rotation-alignment');\n }\n\n if (this.layout.get('symbol-placement') === 'point') {\n const writingModes = this.layout.get('text-writing-mode');\n if (writingModes) {\n // remove duplicates, preserving order\n const deduped = [];\n for (const m of writingModes) {\n if (deduped.indexOf(m) < 0) deduped.push(m);\n }\n this.layout._values['text-writing-mode'] = deduped;\n } else {\n this.layout._values['text-writing-mode'] = ['horizontal'];\n }\n }\n\n this._setPaintOverrides();\n }\n\n getValueAndResolveTokens(name: any, feature: Feature, canonical: CanonicalTileID, availableImages: Array) {\n const value = this.layout.get(name).evaluate(feature, {}, canonical, availableImages);\n const unevaluated = this._unevaluatedLayout._values[name];\n if (!unevaluated.isDataDriven() && !isExpression(unevaluated.value) && value) {\n return resolveTokens(feature.properties, value);\n }\n\n return value;\n }\n\n createBucket(parameters: BucketParameters) {\n return new SymbolBucket(parameters);\n }\n\n queryRadius(): number {\n return 0;\n }\n\n queryIntersectsFeature(): boolean {\n throw new Error('Should take a different path in FeatureIndex');\n }\n\n _setPaintOverrides() {\n for (const overridable of properties.paint.overridableProperties) {\n if (!SymbolStyleLayer.hasPaintOverride(this.layout, overridable)) {\n continue;\n }\n const overridden = this.paint.get(overridable as keyof SymbolPaintPropsPossiblyEvaluated) as PossiblyEvaluatedPropertyValue;\n const override = new FormatSectionOverride(overridden);\n const styleExpression = new StyleExpression(override, overridden.property.specification);\n let expression = null;\n if (overridden.value.kind === 'constant' || overridden.value.kind === 'source') {\n expression = new ZoomConstantExpression('source', styleExpression) as SourceExpression;\n } else {\n expression = new ZoomDependentExpression('composite',\n styleExpression,\n overridden.value.zoomStops);\n }\n this.paint._values[overridable] = new PossiblyEvaluatedPropertyValue(overridden.property,\n expression,\n overridden.parameters);\n }\n }\n\n _handleOverridablePaintPropertyUpdate(name: string, oldValue: PropertyValue, newValue: PropertyValue): boolean {\n if (!this.layout || oldValue.isDataDriven() || newValue.isDataDriven()) {\n return false;\n }\n return SymbolStyleLayer.hasPaintOverride(this.layout, name);\n }\n\n static hasPaintOverride(layout: PossiblyEvaluated, propertyName: string): boolean {\n const textField = layout.get('text-field');\n const property = properties.paint.properties[propertyName];\n let hasOverrides = false;\n\n const checkSections = (sections) => {\n for (const section of sections) {\n if (property.overrides && property.overrides.hasOverride(section)) {\n hasOverrides = true;\n return;\n }\n }\n };\n\n if (textField.value.kind === 'constant' && textField.value.value instanceof Formatted) {\n checkSections(textField.value.value.sections);\n } else if (textField.value.kind === 'source') {\n\n const checkExpression = (expression: Expression) => {\n if (hasOverrides) return;\n\n if (expression instanceof Literal && typeOf(expression.value) === FormattedType) {\n const formatted: Formatted = (expression.value as any);\n checkSections(formatted.sections);\n } else if (expression instanceof FormatExpression) {\n checkSections(expression.sections);\n } else {\n expression.eachChild(checkExpression);\n }\n };\n\n const expr: ZoomConstantExpression<'source'> = (textField.value as any);\n if (expr._styleExpression) {\n checkExpression(expr._styleExpression.expression);\n }\n }\n\n return hasOverrides;\n }\n}\n\nexport type SymbolPadding = [number, number, number, number];\n\nexport function getIconPadding(layout: PossiblyEvaluated, feature: SymbolFeature, canonical: CanonicalTileID, pixelRatio = 1): SymbolPadding {\n // Support text-padding in addition to icon-padding? Unclear how to apply asymmetric text-padding to the radius for collision circles.\n const result = layout.get('icon-padding').evaluate(feature, {}, canonical);\n const values = result && result.values;\n\n return [\n values[0] * pixelRatio,\n values[1] * pixelRatio,\n values[2] * pixelRatio,\n values[3] * pixelRatio,\n ];\n}\n","/**\n * Replace tokens in a string template with values in an object\n *\n * @param properties - a key/value relationship between tokens and replacements\n * @param text - the template string\n * @returns the template with tokens replaced\n */\nexport function resolveTokens(\n properties: {\n readonly [x: string]: unknown;\n } | null,\n text: string\n): string {\n return text.replace(/{([^{}]+)}/g, (match, key: string) => {\n return properties && key in properties ? String(properties[key]) : '';\n });\n}\n","// This file is generated. Edit build/generate-style-code.ts, then run 'npm run codegen'.\n/* eslint-disable */\n\nimport {latest as styleSpec} from '@maplibre/maplibre-gl-style-spec';\n\nimport {\n Properties,\n DataConstantProperty,\n DataDrivenProperty,\n CrossFadedDataDrivenProperty,\n CrossFadedProperty,\n ColorRampProperty,\n PossiblyEvaluatedPropertyValue,\n CrossFaded\n} from '../properties';\n\nimport type {Color, Formatted, Padding, ResolvedImage, VariableAnchorOffsetCollection} from '@maplibre/maplibre-gl-style-spec';\nimport {StylePropertySpecification} from '@maplibre/maplibre-gl-style-spec';\n\n\nexport type BackgroundPaintProps = {\n \"background-color\": DataConstantProperty,\n \"background-pattern\": CrossFadedProperty,\n \"background-opacity\": DataConstantProperty,\n};\n\nexport type BackgroundPaintPropsPossiblyEvaluated = {\n \"background-color\": Color,\n \"background-pattern\": CrossFaded,\n \"background-opacity\": number,\n};\n\nlet paint: Properties;\nconst getPaint = () => paint = paint || new Properties({\n \"background-color\": new DataConstantProperty(styleSpec[\"paint_background\"][\"background-color\"] as any as StylePropertySpecification),\n \"background-pattern\": new CrossFadedProperty(styleSpec[\"paint_background\"][\"background-pattern\"] as any as StylePropertySpecification),\n \"background-opacity\": new DataConstantProperty(styleSpec[\"paint_background\"][\"background-opacity\"] as any as StylePropertySpecification),\n});\n\nexport default ({ get paint() { return getPaint() } });","import {StyleLayer} from '../style_layer';\n\nimport properties, {type BackgroundPaintPropsPossiblyEvaluated} from './background_style_layer_properties.g';\nimport {type Transitionable, type Transitioning, type PossiblyEvaluated} from '../properties';\n\nimport type {BackgroundPaintProps} from './background_style_layer_properties.g';\nimport type {LayerSpecification} from '@maplibre/maplibre-gl-style-spec';\n\nexport const isBackgroundStyleLayer = (layer: StyleLayer): layer is BackgroundStyleLayer => layer.type === 'background';\n\nexport class BackgroundStyleLayer extends StyleLayer {\n _transitionablePaint: Transitionable;\n _transitioningPaint: Transitioning;\n paint: PossiblyEvaluated;\n\n constructor(layer: LayerSpecification) {\n super(layer, properties);\n }\n}\n","// This file is generated. Edit build/generate-style-code.ts, then run 'npm run codegen'.\n/* eslint-disable */\n\nimport {latest as styleSpec} from '@maplibre/maplibre-gl-style-spec';\n\nimport {\n Properties,\n DataConstantProperty,\n DataDrivenProperty,\n CrossFadedDataDrivenProperty,\n CrossFadedProperty,\n ColorRampProperty,\n PossiblyEvaluatedPropertyValue,\n CrossFaded\n} from '../properties';\n\nimport type {Color, Formatted, Padding, ResolvedImage, VariableAnchorOffsetCollection} from '@maplibre/maplibre-gl-style-spec';\nimport {StylePropertySpecification} from '@maplibre/maplibre-gl-style-spec';\n\n\nexport type RasterPaintProps = {\n \"raster-opacity\": DataConstantProperty,\n \"raster-hue-rotate\": DataConstantProperty,\n \"raster-brightness-min\": DataConstantProperty,\n \"raster-brightness-max\": DataConstantProperty,\n \"raster-saturation\": DataConstantProperty,\n \"raster-contrast\": DataConstantProperty,\n \"raster-resampling\": DataConstantProperty<\"linear\" | \"nearest\">,\n \"raster-fade-duration\": DataConstantProperty,\n};\n\nexport type RasterPaintPropsPossiblyEvaluated = {\n \"raster-opacity\": number,\n \"raster-hue-rotate\": number,\n \"raster-brightness-min\": number,\n \"raster-brightness-max\": number,\n \"raster-saturation\": number,\n \"raster-contrast\": number,\n \"raster-resampling\": \"linear\" | \"nearest\",\n \"raster-fade-duration\": number,\n};\n\nlet paint: Properties;\nconst getPaint = () => paint = paint || new Properties({\n \"raster-opacity\": new DataConstantProperty(styleSpec[\"paint_raster\"][\"raster-opacity\"] as any as StylePropertySpecification),\n \"raster-hue-rotate\": new DataConstantProperty(styleSpec[\"paint_raster\"][\"raster-hue-rotate\"] as any as StylePropertySpecification),\n \"raster-brightness-min\": new DataConstantProperty(styleSpec[\"paint_raster\"][\"raster-brightness-min\"] as any as StylePropertySpecification),\n \"raster-brightness-max\": new DataConstantProperty(styleSpec[\"paint_raster\"][\"raster-brightness-max\"] as any as StylePropertySpecification),\n \"raster-saturation\": new DataConstantProperty(styleSpec[\"paint_raster\"][\"raster-saturation\"] as any as StylePropertySpecification),\n \"raster-contrast\": new DataConstantProperty(styleSpec[\"paint_raster\"][\"raster-contrast\"] as any as StylePropertySpecification),\n \"raster-resampling\": new DataConstantProperty(styleSpec[\"paint_raster\"][\"raster-resampling\"] as any as StylePropertySpecification),\n \"raster-fade-duration\": new DataConstantProperty(styleSpec[\"paint_raster\"][\"raster-fade-duration\"] as any as StylePropertySpecification),\n});\n\nexport default ({ get paint() { return getPaint() } });","import {StyleLayer} from '../style_layer';\n\nimport properties, {type RasterPaintPropsPossiblyEvaluated} from './raster_style_layer_properties.g';\nimport {type Transitionable, type Transitioning, type PossiblyEvaluated} from '../properties';\n\nimport type {RasterPaintProps} from './raster_style_layer_properties.g';\nimport type {LayerSpecification} from '@maplibre/maplibre-gl-style-spec';\n\nexport const isRasterStyleLayer = (layer: StyleLayer): layer is RasterStyleLayer => layer.type === 'raster';\n\nexport class RasterStyleLayer extends StyleLayer {\n _transitionablePaint: Transitionable;\n _transitioningPaint: Transitioning;\n paint: PossiblyEvaluated;\n\n constructor(layer: LayerSpecification) {\n super(layer, properties);\n }\n}\n","import {StyleLayer} from '../style_layer';\nimport type {Map} from '../../ui/map';\nimport {type mat4} from 'gl-matrix';\nimport {type LayerSpecification} from '@maplibre/maplibre-gl-style-spec';\nimport type {ProjectionData} from '../../geo/projection/projection_data';\n\n/**\n* Input arguments exposed by custom render function.\n*/\nexport type CustomRenderMethodInput = {\n /**\n * This value represents the distance from the camera to the far clipping plane.\n * It is used in the calculation of the projection matrix to determine which objects are visible.\n * farZ should be larger than nearZ.\n */\n farZ: number;\n /**\n * This value represents the distance from the camera to the near clipping plane.\n * It is used in the calculation of the projection matrix to determine which objects are visible.\n * nearZ should be smaller than farZ.\n */\n nearZ: number;\n /**\n * Vertical field of view in radians.\n */\n fov: number;\n /**\n * model view projection matrix\n * represents the matrix converting from world space to clip space\n * https://learnopengl.com/Getting-started/Coordinate-Systems\n * **/\n modelViewProjectionMatrix: mat4;\n /**\n * projection matrix\n * represents the matrix converting from view space to clip space\n * https://learnopengl.com/Getting-started/Coordinate-Systems\n */\n projectionMatrix: mat4;\n /**\n * Data required for picking and compiling a custom shader for the current projection.\n */\n shaderData: {\n /**\n * Name of the shader variant that should be used.\n * Depends on current projection.\n * Whenever the other shader properties change, this string changes as well,\n * and can be used as a key with which to cache compiled shaders.\n */\n variantName: string;\n /**\n * The prelude code to add to the vertex shader to access MapLibre's `projectTile` projection function.\n * Depends on current projection.\n * @example\n * ```\n * const vertexSource = `#version 300 es\n * ${shaderData.vertexShaderPrelude}\n * ${shaderData.define}\n * in vec2 a_pos;\n * void main() {\n * gl_Position = projectTile(a_pos);\n * }`;\n * ```\n */\n vertexShaderPrelude: string;\n /**\n * Defines to add to the shader code.\n * Depends on current projection.\n * @example\n * ```\n * const vertexSource = `#version 300 es\n * ${shaderData.vertexShaderPrelude}\n * ${shaderData.define}\n * in vec2 a_pos;\n * void main() {\n * gl_Position = projectTile(a_pos);\n * #ifdef GLOBE\n * // Do globe-specific things\n * #endif\n * }`;\n * ```\n */\n define: string;\n };\n /**\n * Uniforms that should be passed to the vertex shader, if MapLibre's projection code is used.\n * For more details of this object's internals, see its doc comments in `src/geo/projection/projection_data.ts`.\n *\n * These uniforms are set so that `projectTile` in shader accepts a vec2 in range 0..1 in web mercator coordinates.\n * Use `map.transform.getProjectionData({overscaledTileID: tileID})` to get uniforms for a given tile and pass vec2 in tile-local range 0..EXTENT instead.\n *\n * For projection 3D features, use `projectTileFor3D` in the shader.\n *\n * If you just need a projection matrix, use `defaultProjectionData.projectionMatrix`.\n * A projection matrix is sufficient for simple custom layers that also only support mercator projection.\n *\n * Under mercator projection, when these uniforms are used, the shader's `projectTile` function projects spherical mercator\n * coordinates to gl clip space coordinates. The spherical mercator coordinate `[0, 0]` represents the\n * top left corner of the mercator world and `[1, 1]` represents the bottom right corner. When\n * the `renderingMode` is `\"3d\"`, the z coordinate is conformal. A box with identical x, y, and z\n * lengths in mercator units would be rendered as a cube. {@link MercatorCoordinate.fromLngLat}\n * can be used to project a `LngLat` to a mercator coordinate.\n *\n * Under globe projection, when these uniforms are used, the `elevation` parameter\n * passed to `projectTileFor3D` in the shader is elevation in meters above \"sea level\",\n * or more accurately for globe, elevation above the surface of the perfect sphere used to render the planet.\n */\n defaultProjectionData: ProjectionData;\n}\n\n/**\n * @param gl - The map's gl context.\n * @param options - Argument object with render inputs like camera properties.\n */\ntype CustomRenderMethod = (gl: WebGLRenderingContext|WebGL2RenderingContext, options: CustomRenderMethodInput) => void;\n\n/**\n * Interface for custom style layers. This is a specification for\n * implementers to model: it is not an exported method or class.\n *\n * Custom layers allow a user to render directly into the map's GL context using the map's camera.\n * These layers can be added between any regular layers using {@link Map#addLayer}.\n *\n * Custom layers must have a unique `id` and must have the `type` of `\"custom\"`.\n * They must implement `render` and may implement `prerender`, `onAdd` and `onRemove`.\n * They can trigger rendering using {@link Map#triggerRepaint}\n * and they should appropriately handle {@link MapContextEvent} with `webglcontextlost` and `webglcontextrestored`.\n *\n * The `renderingMode` property controls whether the layer is treated as a `\"2d\"` or `\"3d\"` map layer. Use:\n *\n * - `\"renderingMode\": \"3d\"` to use the depth buffer and share it with other layers\n * - `\"renderingMode\": \"2d\"` to add a layer with no depth. If you need to use the depth buffer for a `\"2d\"` layer you must use an offscreen\n * framebuffer and {@link CustomLayerInterface#prerender}\n *\n * @example\n * Custom layer implemented as ES6 class\n * ```ts\n * class NullIslandLayer {\n * constructor() {\n * this.id = 'null-island';\n * this.type = 'custom';\n * this.renderingMode = '2d';\n * }\n *\n * onAdd(map, gl) {\n * const vertexSource = `\n * uniform mat4 u_matrix;\n * void main() {\n * gl_Position = u_matrix * vec4(0.5, 0.5, 0.0, 1.0);\n * gl_PointSize = 20.0;\n * }`;\n *\n * const fragmentSource = `\n * void main() {\n * fragColor = vec4(1.0, 0.0, 0.0, 1.0);\n * }`;\n *\n * const vertexShader = gl.createShader(gl.VERTEX_SHADER);\n * gl.shaderSource(vertexShader, vertexSource);\n * gl.compileShader(vertexShader);\n * const fragmentShader = gl.createShader(gl.FRAGMENT_SHADER);\n * gl.shaderSource(fragmentShader, fragmentSource);\n * gl.compileShader(fragmentShader);\n *\n * this.program = gl.createProgram();\n * gl.attachShader(this.program, vertexShader);\n * gl.attachShader(this.program, fragmentShader);\n * gl.linkProgram(this.program);\n * }\n *\n * render(gl, matrix) {\n * gl.useProgram(this.program);\n * gl.uniformMatrix4fv(gl.getUniformLocation(this.program, \"u_matrix\"), false, matrix);\n * gl.drawArrays(gl.POINTS, 0, 1);\n * }\n * }\n *\n * map.on('load', () => {\n * map.addLayer(new NullIslandLayer());\n * });\n * ```\n */\nexport interface CustomLayerInterface {\n /**\n * A unique layer id.\n */\n id: string;\n /**\n * The layer's type. Must be `\"custom\"`.\n */\n type: 'custom';\n /**\n * Either `\"2d\"` or `\"3d\"`. Defaults to `\"2d\"`.\n */\n renderingMode?: '2d' | '3d';\n /**\n * Called during a render frame allowing the layer to draw into the GL context.\n *\n * The layer can assume blending and depth state is set to allow the layer to properly\n * blend and clip other layers. The layer cannot make any other assumptions about the\n * current GL state.\n *\n * If the layer needs to render to a texture, it should implement the `prerender` method\n * to do this and only use the `render` method for drawing directly into the main framebuffer.\n *\n * The blend function is set to `gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA)`. This expects\n * colors to be provided in premultiplied alpha form where the `r`, `g` and `b` values are already\n * multiplied by the `a` value. If you are unable to provide colors in premultiplied form you\n * may want to change the blend function to\n * `gl.blendFuncSeparate(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA, gl.ONE, gl.ONE_MINUS_SRC_ALPHA)`.\n */\n render: CustomRenderMethod;\n /**\n * Optional method called during a render frame to allow a layer to prepare resources or render into a texture.\n *\n * The layer cannot make any assumptions about the current GL state and must bind a framebuffer before rendering.\n */\n prerender?: CustomRenderMethod;\n /**\n * Optional method called when the layer has been added to the Map with {@link Map#addLayer}. This\n * gives the layer a chance to initialize gl resources and register event listeners.\n *\n * @param map - The Map this custom layer was just added to.\n * @param gl - The gl context for the map.\n */\n onAdd?(map: Map, gl: WebGLRenderingContext | WebGL2RenderingContext): void;\n /**\n * Optional method called when the layer has been removed from the Map with {@link Map#removeLayer}. This\n * gives the layer a chance to clean up gl resources and event listeners.\n *\n * @param map - The Map this custom layer was just added to.\n * @param gl - The gl context for the map.\n */\n onRemove?(map: Map, gl: WebGLRenderingContext | WebGL2RenderingContext): void;\n}\n\nexport function validateCustomStyleLayer(layerObject: CustomLayerInterface) {\n const errors = [];\n const id = layerObject.id;\n\n if (id === undefined) {\n errors.push({\n message: `layers.${id}: missing required property \"id\"`\n });\n }\n\n if (layerObject.render === undefined) {\n errors.push({\n message: `layers.${id}: missing required method \"render\"`\n });\n }\n\n if (layerObject.renderingMode &&\n layerObject.renderingMode !== '2d' &&\n layerObject.renderingMode !== '3d') {\n errors.push({\n message: `layers.${id}: property \"renderingMode\" must be either \"2d\" or \"3d\"`\n });\n }\n\n return errors;\n}\n\nexport const isCustomStyleLayer = (layer: StyleLayer): layer is CustomStyleLayer => layer.type === 'custom';\n\nexport class CustomStyleLayer extends StyleLayer {\n\n implementation: CustomLayerInterface;\n\n constructor(implementation: CustomLayerInterface) {\n super(implementation, {});\n this.implementation = implementation;\n }\n\n is3D() {\n return this.implementation.renderingMode === '3d';\n }\n\n hasOffscreenPass() {\n return this.implementation.prerender !== undefined;\n }\n\n recalculate() {}\n updateTransitions() {}\n hasTransition() { return false; }\n\n serialize(): LayerSpecification {\n throw new Error('Custom layers cannot be serialized');\n }\n\n onAdd = (map: Map) => {\n if (this.implementation.onAdd) {\n this.implementation.onAdd(map, map.painter.context.gl);\n }\n };\n\n onRemove = (map: Map) => {\n if (this.implementation.onRemove) {\n this.implementation.onRemove(map, map.painter.context.gl);\n }\n };\n}\n","import {CircleStyleLayer} from './style_layer/circle_style_layer';\nimport {HeatmapStyleLayer} from './style_layer/heatmap_style_layer';\nimport {HillshadeStyleLayer} from './style_layer/hillshade_style_layer';\nimport {FillStyleLayer} from './style_layer/fill_style_layer';\nimport {FillExtrusionStyleLayer} from './style_layer/fill_extrusion_style_layer';\nimport {LineStyleLayer} from './style_layer/line_style_layer';\nimport {SymbolStyleLayer} from './style_layer/symbol_style_layer';\nimport {BackgroundStyleLayer} from './style_layer/background_style_layer';\nimport {RasterStyleLayer} from './style_layer/raster_style_layer';\nimport {CustomStyleLayer, type CustomLayerInterface} from './style_layer/custom_style_layer';\n\nimport type {LayerSpecification} from '@maplibre/maplibre-gl-style-spec';\n\nexport function createStyleLayer(layer: LayerSpecification | CustomLayerInterface) {\n if (layer.type === 'custom') {\n return new CustomStyleLayer(layer);\n }\n switch (layer.type) {\n case 'background':\n return new BackgroundStyleLayer(layer);\n case 'circle':\n return new CircleStyleLayer(layer);\n case 'fill':\n return new FillStyleLayer(layer);\n case 'fill-extrusion':\n return new FillExtrusionStyleLayer(layer);\n case 'heatmap':\n return new HeatmapStyleLayer(layer);\n case 'hillshade':\n return new HillshadeStyleLayer(layer);\n case 'line':\n return new LineStyleLayer(layer);\n case 'raster':\n return new RasterStyleLayer(layer);\n case 'symbol':\n return new SymbolStyleLayer(layer);\n }\n}\n\n","/**\n * Invokes the wrapped function in a non-blocking way when trigger() is called.\n * Invocation requests are ignored until the function was actually invoked.\n */\nexport class ThrottledInvoker {\n _channel: MessageChannel;\n _triggered: boolean;\n _methodToThrottle: Function;\n\n constructor(methodToThrottle: Function) {\n this._methodToThrottle = methodToThrottle;\n this._triggered = false;\n if (typeof MessageChannel !== 'undefined') {\n this._channel = new MessageChannel();\n this._channel.port2.onmessage = () => {\n this._triggered = false;\n this._methodToThrottle();\n };\n }\n }\n\n trigger() {\n if (this._triggered) {\n return;\n }\n this._triggered = true;\n if (this._channel) {\n this._channel.port1.postMessage(true);\n } else {\n setTimeout(() => {\n this._triggered = false;\n this._methodToThrottle();\n }, 0);\n }\n }\n\n remove() {\n delete this._channel;\n this._methodToThrottle = () => {};\n }\n}\n","import {RGBAImage} from '../util/image';\n\nimport {warnOnce} from '../util/util';\nimport {register} from '../util/web_worker_transfer';\n\n/**\n * The possible DEM encoding types\n */\nexport type DEMEncoding = 'mapbox' | 'terrarium' | 'custom'\n\n/**\n * DEMData is a data structure for decoding, backfilling, and storing elevation data for processing in the hillshade shaders\n * data can be populated either from a pngraw image tile or from serialized data sent back from a worker. When data is initially\n * loaded from a image tile, we decode the pixel values using the appropriate decoding formula, but we store the\n * elevation data as an Int32 value. we add 65536 (2^16) to eliminate negative values and enable the use of\n * integer overflow when creating the texture used in the hillshadePrepare step.\n *\n * DEMData also handles the backfilling of data from a tile's neighboring tiles. This is necessary because we use a pixel's 8\n * surrounding pixel values to compute the slope at that pixel, and we cannot accurately calculate the slope at pixels on a\n * tile's edge without backfilling from neighboring tiles.\n */\nexport class DEMData {\n uid: string | number;\n data: Uint32Array;\n stride: number;\n dim: number;\n min: number;\n max: number;\n redFactor: number;\n greenFactor: number;\n blueFactor: number;\n baseShift: number;\n\n /**\n * Constructs a `DEMData` object\n * @param uid - the tile's unique id\n * @param data - RGBAImage data has uniform 1px padding on all sides: square tile edge size defines stride\n // and dim is calculated as stride - 2.\n * @param encoding - the encoding type of the data\n * @param redFactor - the red channel factor used to unpack the data, used for `custom` encoding only\n * @param greenFactor - the green channel factor used to unpack the data, used for `custom` encoding only\n * @param blueFactor - the blue channel factor used to unpack the data, used for `custom` encoding only\n * @param baseShift - the base shift used to unpack the data, used for `custom` encoding only\n */\n constructor(uid: string | number, data: RGBAImage | ImageData, encoding: DEMEncoding, redFactor = 1.0, greenFactor = 1.0, blueFactor = 1.0, baseShift = 0.0) {\n this.uid = uid;\n if (data.height !== data.width) throw new RangeError('DEM tiles must be square');\n if (encoding && !['mapbox', 'terrarium', 'custom'].includes(encoding)) {\n warnOnce(`\"${encoding}\" is not a valid encoding type. Valid types include \"mapbox\", \"terrarium\" and \"custom\".`);\n return;\n }\n this.stride = data.height;\n const dim = this.dim = data.height - 2;\n this.data = new Uint32Array(data.data.buffer);\n switch (encoding) {\n case 'terrarium':\n // unpacking formula for mapzen terrarium:\n // https://aws.amazon.com/public-datasets/terrain/\n this.redFactor = 256.0;\n this.greenFactor = 1.0;\n this.blueFactor = 1.0 / 256.0;\n this.baseShift = 32768.0;\n break;\n case 'custom':\n this.redFactor = redFactor;\n this.greenFactor = greenFactor;\n this.blueFactor = blueFactor;\n this.baseShift = baseShift;\n break;\n case 'mapbox':\n default:\n // unpacking formula for mapbox.terrain-rgb:\n // https://www.mapbox.com/help/access-elevation-data/#mapbox-terrain-rgb\n this.redFactor = 6553.6;\n this.greenFactor = 25.6;\n this.blueFactor = 0.1;\n this.baseShift = 10000.0;\n break;\n }\n\n // in order to avoid flashing seams between tiles, here we are initially populating a 1px border of pixels around the image\n // with the data of the nearest pixel from the image. this data is eventually replaced when the tile's neighboring\n // tiles are loaded and the accurate data can be backfilled using DEMData#backfillBorder\n for (let x = 0; x < dim; x++) {\n // left vertical border\n this.data[this._idx(-1, x)] = this.data[this._idx(0, x)];\n // right vertical border\n this.data[this._idx(dim, x)] = this.data[this._idx(dim - 1, x)];\n // left horizontal border\n this.data[this._idx(x, -1)] = this.data[this._idx(x, 0)];\n // right horizontal border\n this.data[this._idx(x, dim)] = this.data[this._idx(x, dim - 1)];\n }\n // corners\n this.data[this._idx(-1, -1)] = this.data[this._idx(0, 0)];\n this.data[this._idx(dim, -1)] = this.data[this._idx(dim - 1, 0)];\n this.data[this._idx(-1, dim)] = this.data[this._idx(0, dim - 1)];\n this.data[this._idx(dim, dim)] = this.data[this._idx(dim - 1, dim - 1)];\n\n // calculate min/max values\n this.min = Number.MAX_SAFE_INTEGER;\n this.max = Number.MIN_SAFE_INTEGER;\n for (let x = 0; x < dim; x++) {\n for (let y = 0; y < dim; y++) {\n const ele = this.get(x, y);\n if (ele > this.max) this.max = ele;\n if (ele < this.min) this.min = ele;\n }\n }\n }\n\n get(x: number, y: number) {\n const pixels = new Uint8Array(this.data.buffer);\n const index = this._idx(x, y) * 4;\n return this.unpack(pixels[index], pixels[index + 1], pixels[index + 2]);\n }\n\n getUnpackVector() {\n return [this.redFactor, this.greenFactor, this.blueFactor, this.baseShift];\n }\n\n _idx(x: number, y: number) {\n if (x < -1 || x >= this.dim + 1 || y < -1 || y >= this.dim + 1) throw new RangeError('out of range source coordinates for DEM data');\n return (y + 1) * this.stride + (x + 1);\n }\n\n unpack(r: number, g: number, b: number) {\n return (r * this.redFactor + g * this.greenFactor + b * this.blueFactor - this.baseShift);\n }\n\n getPixels() {\n return new RGBAImage({width: this.stride, height: this.stride}, new Uint8Array(this.data.buffer));\n }\n\n backfillBorder(borderTile: DEMData, dx: number, dy: number) {\n if (this.dim !== borderTile.dim) throw new Error('dem dimension mismatch');\n\n let xMin = dx * this.dim,\n xMax = dx * this.dim + this.dim,\n yMin = dy * this.dim,\n yMax = dy * this.dim + this.dim;\n\n switch (dx) {\n case -1:\n xMin = xMax - 1;\n break;\n case 1:\n xMax = xMin + 1;\n break;\n }\n\n switch (dy) {\n case -1:\n yMin = yMax - 1;\n break;\n case 1:\n yMax = yMin + 1;\n break;\n }\n\n const ox = -dx * this.dim;\n const oy = -dy * this.dim;\n for (let y = yMin; y < yMax; y++) {\n for (let x = xMin; x < xMax; x++) {\n this.data[this._idx(x, y)] = borderTile.data[this._idx(x + ox, y + oy)];\n }\n }\n }\n}\n\nregister('DEMData', DEMData);\n","export class DictionaryCoder {\n _stringToNumber: {[_: string]: number};\n _numberToString: Array;\n\n constructor(strings: Array) {\n this._stringToNumber = {};\n this._numberToString = [];\n for (let i = 0; i < strings.length; i++) {\n const string = strings[i];\n this._stringToNumber[string] = i;\n this._numberToString[i] = string;\n }\n }\n\n encode(string: string) {\n return this._stringToNumber[string];\n }\n\n decode(n: number) {\n if (n >= this._numberToString.length) throw new Error(`Out of bounds. Index requested n=${n} can't be >= this._numberToString.length ${this._numberToString.length}`);\n return this._numberToString[n];\n }\n}\n","import type {VectorTileFeature} from '@mapbox/vector-tile';\nimport type {LayerSpecification} from '@maplibre/maplibre-gl-style-spec';\n\n/**\n * A helper for type to omit a property from a type\n */\ntype DistributiveKeys = T extends T ? keyof T : never;\n/**\n * A helper for type to omit a property from a type\n */\ntype DistributiveOmit> = T extends unknown\n ? Omit\n : never;\n\n/**\n * An extended geojson feature used by the events to return data to the listener\n */\nexport type MapGeoJSONFeature = GeoJSONFeature & {\n layer: DistributiveOmit & {source: string};\n source: string;\n sourceLayer?: string;\n state: { [key: string]: any };\n}\n\n/**\n * A geojson feature\n */\nexport class GeoJSONFeature {\n type: 'Feature';\n _geometry: GeoJSON.Geometry;\n properties: { [name: string]: any };\n id: number | string | undefined;\n\n _vectorTileFeature: VectorTileFeature;\n\n constructor(vectorTileFeature: VectorTileFeature, z: number, x: number, y: number, id: string | number | undefined) {\n this.type = 'Feature';\n\n this._vectorTileFeature = vectorTileFeature;\n (vectorTileFeature as any)._z = z;\n (vectorTileFeature as any)._x = x;\n (vectorTileFeature as any)._y = y;\n\n this.properties = vectorTileFeature.properties;\n this.id = id;\n }\n\n get geometry(): GeoJSON.Geometry {\n if (this._geometry === undefined) {\n this._geometry = this._vectorTileFeature.toGeoJSON(\n (this._vectorTileFeature as any)._x,\n (this._vectorTileFeature as any)._y,\n (this._vectorTileFeature as any)._z).geometry;\n }\n return this._geometry;\n }\n\n set geometry(g: GeoJSON.Geometry) {\n this._geometry = g;\n }\n\n toJSON() {\n const json: any = {\n geometry: this.geometry\n };\n for (const i in this) {\n if (i === '_geometry' || i === '_vectorTileFeature') continue;\n json[i] = (this)[i];\n }\n return json;\n }\n}\n","import type Point from '@mapbox/point-geometry';\nimport {loadGeometry} from './load_geometry';\nimport {toEvaluationFeature} from './evaluation_feature';\nimport {EXTENT} from './extent';\nimport {featureFilter} from '@maplibre/maplibre-gl-style-spec';\nimport {TransferableGridIndex} from '../util/transferable_grid_index';\nimport {DictionaryCoder} from '../util/dictionary_coder';\nimport vt from '@mapbox/vector-tile';\nimport Protobuf from 'pbf';\nimport {GeoJSONFeature} from '../util/vectortile_to_geojson';\nimport type {MapGeoJSONFeature} from '../util/vectortile_to_geojson';\nimport {mapObject, extend} from '../util/util';\nimport {type OverscaledTileID} from '../source/tile_id';\nimport {register} from '../util/web_worker_transfer';\nimport {EvaluationParameters} from '../style/evaluation_parameters';\nimport {type SourceFeatureState} from '../source/source_state';\nimport {polygonIntersectsBox} from '../util/intersection_tests';\nimport {PossiblyEvaluated} from '../style/properties';\nimport {FeatureIndexArray} from './array_types.g';\nimport {type mat4} from 'gl-matrix';\n\nimport type {StyleLayer} from '../style/style_layer';\nimport type {FeatureFilter, FeatureState, FilterSpecification, PromoteIdSpecification} from '@maplibre/maplibre-gl-style-spec';\nimport type {IReadonlyTransform} from '../geo/transform_interface';\nimport type {VectorTileFeature, VectorTileLayer} from '@mapbox/vector-tile';\n\ntype QueryParameters = {\n scale: number;\n pixelPosMatrix: mat4;\n transform: IReadonlyTransform;\n tileSize: number;\n queryGeometry: Array;\n cameraQueryGeometry: Array;\n queryPadding: number;\n params: {\n filter?: FilterSpecification;\n layers?: Set | null;\n availableImages?: Array;\n };\n};\n\n/**\n * An in memory index class to allow fast interaction with features\n */\nexport class FeatureIndex {\n tileID: OverscaledTileID;\n x: number;\n y: number;\n z: number;\n grid: TransferableGridIndex;\n grid3D: TransferableGridIndex;\n featureIndexArray: FeatureIndexArray;\n promoteId?: PromoteIdSpecification;\n\n rawTileData: ArrayBuffer;\n bucketLayerIDs: Array>;\n\n vtLayers: {[_: string]: VectorTileLayer};\n sourceLayerCoder: DictionaryCoder;\n\n constructor(tileID: OverscaledTileID, promoteId?: PromoteIdSpecification | null) {\n this.tileID = tileID;\n this.x = tileID.canonical.x;\n this.y = tileID.canonical.y;\n this.z = tileID.canonical.z;\n this.grid = new TransferableGridIndex(EXTENT, 16, 0);\n this.grid3D = new TransferableGridIndex(EXTENT, 16, 0);\n this.featureIndexArray = new FeatureIndexArray();\n this.promoteId = promoteId;\n }\n\n insert(feature: VectorTileFeature, geometry: Array>, featureIndex: number, sourceLayerIndex: number, bucketIndex: number, is3D?: boolean) {\n const key = this.featureIndexArray.length;\n this.featureIndexArray.emplaceBack(featureIndex, sourceLayerIndex, bucketIndex);\n\n const grid = is3D ? this.grid3D : this.grid;\n\n for (let r = 0; r < geometry.length; r++) {\n const ring = geometry[r];\n\n const bbox = [Infinity, Infinity, -Infinity, -Infinity];\n for (let i = 0; i < ring.length; i++) {\n const p = ring[i];\n bbox[0] = Math.min(bbox[0], p.x);\n bbox[1] = Math.min(bbox[1], p.y);\n bbox[2] = Math.max(bbox[2], p.x);\n bbox[3] = Math.max(bbox[3], p.y);\n }\n\n if (bbox[0] < EXTENT &&\n bbox[1] < EXTENT &&\n bbox[2] >= 0 &&\n bbox[3] >= 0) {\n grid.insert(key, bbox[0], bbox[1], bbox[2], bbox[3]);\n }\n }\n }\n\n loadVTLayers(): {[_: string]: VectorTileLayer} {\n if (!this.vtLayers) {\n this.vtLayers = new vt.VectorTile(new Protobuf(this.rawTileData)).layers;\n this.sourceLayerCoder = new DictionaryCoder(this.vtLayers ? Object.keys(this.vtLayers).sort() : ['_geojsonTileLayer']);\n }\n return this.vtLayers;\n }\n\n // Finds non-symbol features in this tile at a particular position.\n query(\n args: QueryParameters,\n styleLayers: {[_: string]: StyleLayer},\n serializedLayers: {[_: string]: any},\n sourceFeatureState: SourceFeatureState\n ): {[_: string]: Array<{featureIndex: number; feature: GeoJSONFeature}>} {\n this.loadVTLayers();\n\n const params = args.params;\n const pixelsToTileUnits = EXTENT / args.tileSize / args.scale;\n const filter = featureFilter(params.filter);\n\n const queryGeometry = args.queryGeometry;\n const queryPadding = args.queryPadding * pixelsToTileUnits;\n\n const bounds = getBounds(queryGeometry);\n const matching = this.grid.query(bounds.minX - queryPadding, bounds.minY - queryPadding, bounds.maxX + queryPadding, bounds.maxY + queryPadding);\n\n const cameraBounds = getBounds(args.cameraQueryGeometry);\n const matching3D = this.grid3D.query(\n cameraBounds.minX - queryPadding, cameraBounds.minY - queryPadding, cameraBounds.maxX + queryPadding, cameraBounds.maxY + queryPadding,\n (bx1, by1, bx2, by2) => {\n return polygonIntersectsBox(args.cameraQueryGeometry, bx1 - queryPadding, by1 - queryPadding, bx2 + queryPadding, by2 + queryPadding);\n });\n\n for (const key of matching3D) {\n matching.push(key);\n }\n\n matching.sort(topDownFeatureComparator);\n\n const result = {};\n let previousIndex;\n for (let k = 0; k < matching.length; k++) {\n const index = matching[k];\n\n // don't check the same feature more than once\n if (index === previousIndex) continue;\n previousIndex = index;\n\n const match = this.featureIndexArray.get(index);\n let featureGeometry = null;\n this.loadMatchingFeature(\n result,\n match.bucketIndex,\n match.sourceLayerIndex,\n match.featureIndex,\n filter,\n params.layers,\n params.availableImages,\n styleLayers,\n serializedLayers,\n sourceFeatureState,\n (feature: VectorTileFeature, styleLayer: StyleLayer, featureState: FeatureState) => {\n if (!featureGeometry) {\n featureGeometry = loadGeometry(feature);\n }\n\n return styleLayer.queryIntersectsFeature(queryGeometry, feature, featureState, featureGeometry, this.z, args.transform, pixelsToTileUnits, args.pixelPosMatrix);\n }\n );\n }\n\n return result;\n }\n\n loadMatchingFeature(\n result: {\n [_: string]: Array<{\n featureIndex: number;\n feature: GeoJSONFeature;\n intersectionZ?: boolean | number;\n }>;\n },\n bucketIndex: number,\n sourceLayerIndex: number,\n featureIndex: number,\n filter: FeatureFilter,\n filterLayerIDs: Set | undefined,\n availableImages: Array,\n styleLayers: {[_: string]: StyleLayer},\n serializedLayers: {[_: string]: any},\n sourceFeatureState?: SourceFeatureState,\n intersectionTest?: (\n feature: VectorTileFeature,\n styleLayer: StyleLayer,\n featureState: any,\n id: string | number | void\n ) => boolean | number) {\n\n const layerIDs = this.bucketLayerIDs[bucketIndex];\n if (filterLayerIDs && !layerIDs.some(id => filterLayerIDs.has(id)))\n return;\n\n const sourceLayerName = this.sourceLayerCoder.decode(sourceLayerIndex);\n const sourceLayer = this.vtLayers[sourceLayerName];\n const feature = sourceLayer.feature(featureIndex);\n\n if (filter.needGeometry) {\n const evaluationFeature = toEvaluationFeature(feature, true);\n if (!filter.filter(new EvaluationParameters(this.tileID.overscaledZ), evaluationFeature, this.tileID.canonical)) {\n return;\n }\n } else if (!filter.filter(new EvaluationParameters(this.tileID.overscaledZ), feature)) {\n return;\n }\n\n const id = this.getId(feature, sourceLayerName);\n\n for (let l = 0; l < layerIDs.length; l++) {\n const layerID = layerIDs[l];\n\n if (filterLayerIDs && !filterLayerIDs.has(layerID)) {\n continue;\n }\n\n const styleLayer = styleLayers[layerID];\n\n if (!styleLayer) continue;\n\n let featureState = {};\n if (id && sourceFeatureState) {\n // `feature-state` expression evaluation requires feature state to be available\n featureState = sourceFeatureState.getState(styleLayer.sourceLayer || '_geojsonTileLayer', id);\n }\n\n const serializedLayer = extend({}, serializedLayers[layerID]);\n\n serializedLayer.paint = evaluateProperties(serializedLayer.paint, styleLayer.paint, feature, featureState, availableImages);\n serializedLayer.layout = evaluateProperties(serializedLayer.layout, styleLayer.layout, feature, featureState, availableImages);\n\n const intersectionZ = !intersectionTest || intersectionTest(feature, styleLayer, featureState);\n if (!intersectionZ) {\n // Only applied for non-symbol features\n continue;\n }\n\n const geojsonFeature = new GeoJSONFeature(feature, this.z, this.x, this.y, id) as MapGeoJSONFeature;\n geojsonFeature.layer = serializedLayer;\n let layerResult = result[layerID];\n if (layerResult === undefined) {\n layerResult = result[layerID] = [];\n }\n layerResult.push({featureIndex, feature: geojsonFeature, intersectionZ});\n }\n }\n\n // Given a set of symbol indexes that have already been looked up,\n // return a matching set of GeoJSONFeatures\n lookupSymbolFeatures(symbolFeatureIndexes: Array,\n serializedLayers: {[_: string]: StyleLayer},\n bucketIndex: number,\n sourceLayerIndex: number,\n filterSpec: FilterSpecification,\n filterLayerIDs: Set | null,\n availableImages: Array,\n styleLayers: {[_: string]: StyleLayer}) {\n const result = {};\n this.loadVTLayers();\n\n const filter = featureFilter(filterSpec);\n\n for (const symbolFeatureIndex of symbolFeatureIndexes) {\n this.loadMatchingFeature(\n result,\n bucketIndex,\n sourceLayerIndex,\n symbolFeatureIndex,\n filter,\n filterLayerIDs,\n availableImages,\n styleLayers,\n serializedLayers\n );\n\n }\n return result;\n }\n\n hasLayer(id: string) {\n for (const layerIDs of this.bucketLayerIDs) {\n for (const layerID of layerIDs) {\n if (id === layerID) return true;\n }\n }\n\n return false;\n }\n\n getId(feature: VectorTileFeature, sourceLayerId: string): string | number {\n let id: string | number = feature.id;\n if (this.promoteId) {\n const propName = typeof this.promoteId === 'string' ? this.promoteId : this.promoteId[sourceLayerId];\n id = feature.properties[propName] as string | number;\n if (typeof id === 'boolean') id = Number(id);\n\n // When cluster is true, the id is the cluster_id even though promoteId is set\n if (id === undefined && feature.properties?.cluster && this.promoteId) {\n id = Number(feature.properties.cluster_id);\n }\n }\n return id;\n }\n}\n\nregister(\n 'FeatureIndex',\n FeatureIndex,\n {omit: ['rawTileData', 'sourceLayerCoder']}\n);\n\nfunction evaluateProperties(serializedProperties, styleLayerProperties, feature, featureState, availableImages) {\n return mapObject(serializedProperties, (property, key) => {\n const prop = styleLayerProperties instanceof PossiblyEvaluated ? styleLayerProperties.get(key) : null;\n return prop && prop.evaluate ? prop.evaluate(feature, featureState, availableImages) : prop;\n });\n}\n\nfunction getBounds(geometry: Array) {\n let minX = Infinity;\n let minY = Infinity;\n let maxX = -Infinity;\n let maxY = -Infinity;\n for (const p of geometry) {\n minX = Math.min(minX, p.x);\n minY = Math.min(minY, p.y);\n maxX = Math.max(maxX, p.x);\n maxY = Math.max(maxY, p.y);\n }\n return {minX, minY, maxX, maxY};\n}\n\nfunction topDownFeatureComparator(a, b) {\n return b - a;\n}\n","import Point from '@mapbox/point-geometry';\n\n/**\n * Returns the part of a multiline that intersects with the provided rectangular box.\n *\n * @param lines - the lines to check\n * @param x1 - the left edge of the box\n * @param y1 - the top edge of the box\n * @param x2 - the right edge of the box\n * @param y2 - the bottom edge of the box\n * @returns lines\n */\nexport function clipLine(lines: Array>, x1: number, y1: number, x2: number, y2: number): Array> {\n const clippedLines = [];\n\n for (let l = 0; l < lines.length; l++) {\n const line = lines[l];\n let clippedLine;\n\n for (let i = 0; i < line.length - 1; i++) {\n let p0 = line[i];\n let p1 = line[i + 1];\n\n if (p0.x < x1 && p1.x < x1) {\n continue;\n } else if (p0.x < x1) {\n p0 = new Point(x1, p0.y + (p1.y - p0.y) * ((x1 - p0.x) / (p1.x - p0.x)))._round();\n } else if (p1.x < x1) {\n p1 = new Point(x1, p0.y + (p1.y - p0.y) * ((x1 - p0.x) / (p1.x - p0.x)))._round();\n }\n\n if (p0.y < y1 && p1.y < y1) {\n continue;\n } else if (p0.y < y1) {\n p0 = new Point(p0.x + (p1.x - p0.x) * ((y1 - p0.y) / (p1.y - p0.y)), y1)._round();\n } else if (p1.y < y1) {\n p1 = new Point(p0.x + (p1.x - p0.x) * ((y1 - p0.y) / (p1.y - p0.y)), y1)._round();\n }\n\n if (p0.x >= x2 && p1.x >= x2) {\n continue;\n } else if (p0.x >= x2) {\n p0 = new Point(x2, p0.y + (p1.y - p0.y) * ((x2 - p0.x) / (p1.x - p0.x)))._round();\n } else if (p1.x >= x2) {\n p1 = new Point(x2, p0.y + (p1.y - p0.y) * ((x2 - p0.x) / (p1.x - p0.x)))._round();\n }\n\n if (p0.y >= y2 && p1.y >= y2) {\n continue;\n } else if (p0.y >= y2) {\n p0 = new Point(p0.x + (p1.x - p0.x) * ((y2 - p0.y) / (p1.y - p0.y)), y2)._round();\n } else if (p1.y >= y2) {\n p1 = new Point(p0.x + (p1.x - p0.x) * ((y2 - p0.y) / (p1.y - p0.y)), y2)._round();\n }\n\n if (!clippedLine || !p0.equals(clippedLine[clippedLine.length - 1])) {\n clippedLine = [p0];\n clippedLines.push(clippedLine);\n }\n\n clippedLine.push(p1);\n }\n }\n\n return clippedLines;\n}\n","import Point from '@mapbox/point-geometry';\n\nimport {register} from '../util/web_worker_transfer';\n\nexport class Anchor extends Point {\n angle: any;\n segment?: number;\n\n constructor(x: number, y: number, angle: number, segment?: number) {\n super(x, y);\n this.angle = angle;\n if (segment !== undefined) {\n this.segment = segment;\n }\n }\n\n clone() {\n return new Anchor(this.x, this.y, this.angle, this.segment);\n }\n}\n\nregister('Anchor', Anchor);\n","import type Point from '@mapbox/point-geometry';\nimport type {Anchor} from './anchor';\n\n/**\n * Labels placed around really sharp angles aren't readable. Check if any\n * part of the potential label has a combined angle that is too big.\n *\n * @param line - The line to check\n * @param anchor - The point on the line around which the label is anchored.\n * @param labelLength - The length of the label in geometry units.\n * @param windowSize - The check fails if the combined angles within a part of the line that is `windowSize` long is too big.\n * @param maxAngle - The maximum combined angle that any window along the label is allowed to have.\n *\n * @returns whether the label should be placed\n */\nexport function checkMaxAngle(line: Array, anchor: Anchor, labelLength: number, windowSize: number, maxAngle: number) {\n\n // horizontal labels and labels with length 0 always pass\n if (anchor.segment === undefined || labelLength === 0) return true;\n\n let p = anchor;\n let index = anchor.segment + 1;\n let anchorDistance = 0;\n\n // move backwards along the line to the first segment the label appears on\n while (anchorDistance > -labelLength / 2) {\n index--;\n\n // there isn't enough room for the label after the beginning of the line\n if (index < 0) return false;\n\n anchorDistance -= line[index].dist(p);\n p = line[index];\n }\n\n anchorDistance += line[index].dist(line[index + 1]);\n index++;\n\n // store recent corners and their total angle difference\n const recentCorners = [];\n let recentAngleDelta = 0;\n\n // move forwards by the length of the label and check angles along the way\n while (anchorDistance < labelLength / 2) {\n const prev = line[index - 1];\n const current = line[index];\n const next = line[index + 1];\n\n // there isn't enough room for the label before the end of the line\n if (!next) return false;\n\n let angleDelta = prev.angleTo(current) - current.angleTo(next);\n // restrict angle to -pi..pi range\n angleDelta = Math.abs(((angleDelta + 3 * Math.PI) % (Math.PI * 2)) - Math.PI);\n\n recentCorners.push({\n distance: anchorDistance,\n angleDelta\n });\n recentAngleDelta += angleDelta;\n\n // remove corners that are far enough away from the list of recent anchors\n while (anchorDistance - recentCorners[0].distance > windowSize) {\n recentAngleDelta -= recentCorners.shift().angleDelta;\n }\n\n // the sum of angles within the window area exceeds the maximum allowed value. check fails.\n if (recentAngleDelta > maxAngle) return false;\n\n index++;\n anchorDistance += current.dist(next);\n }\n\n // no part of the line had an angle greater than the maximum allowed. check passes.\n return true;\n}\n","import {interpolates} from '@maplibre/maplibre-gl-style-spec';\n\nimport {Anchor} from '../symbol/anchor';\nimport {checkMaxAngle} from './check_max_angle';\n\nimport type Point from '@mapbox/point-geometry';\nimport type {Shaping, PositionedIcon} from './shaping';\n\nexport {getAnchors, getCenterAnchor};\n\nfunction getLineLength(line: Array): number {\n let lineLength = 0;\n for (let k = 0; k < line.length - 1; k++) {\n lineLength += line[k].dist(line[k + 1]);\n }\n return lineLength;\n}\n\nfunction getAngleWindowSize(\n shapedText: Shaping,\n glyphSize: number,\n boxScale: number\n): number {\n return shapedText ?\n 3 / 5 * glyphSize * boxScale :\n 0;\n}\n\nfunction getShapedLabelLength(shapedText?: Shaping | null, shapedIcon?: PositionedIcon | null): number {\n return Math.max(\n shapedText ? shapedText.right - shapedText.left : 0,\n shapedIcon ? shapedIcon.right - shapedIcon.left : 0);\n}\n\nfunction getCenterAnchor(line: Array,\n maxAngle: number,\n shapedText: Shaping,\n shapedIcon: PositionedIcon,\n glyphSize: number,\n boxScale: number) {\n const angleWindowSize = getAngleWindowSize(shapedText, glyphSize, boxScale);\n const labelLength = getShapedLabelLength(shapedText, shapedIcon) * boxScale;\n\n let prevDistance = 0;\n const centerDistance = getLineLength(line) / 2;\n\n for (let i = 0; i < line.length - 1; i++) {\n\n const a = line[i],\n b = line[i + 1];\n\n const segmentDistance = a.dist(b);\n\n if (prevDistance + segmentDistance > centerDistance) {\n // The center is on this segment\n const t = (centerDistance - prevDistance) / segmentDistance,\n x = interpolates.number(a.x, b.x, t),\n y = interpolates.number(a.y, b.y, t);\n\n const anchor = new Anchor(x, y, b.angleTo(a), i);\n anchor._round();\n if (!angleWindowSize || checkMaxAngle(line, anchor, labelLength, angleWindowSize, maxAngle)) {\n return anchor;\n } else {\n return;\n }\n }\n\n prevDistance += segmentDistance;\n }\n}\n\nfunction getAnchors(line: Array,\n spacing: number,\n maxAngle: number,\n shapedText: Shaping,\n shapedIcon: PositionedIcon,\n glyphSize: number,\n boxScale: number,\n overscaling: number,\n tileExtent: number) {\n\n // Resample a line to get anchor points for labels and check that each\n // potential label passes text-max-angle check and has enough room to fit\n // on the line.\n\n const angleWindowSize = getAngleWindowSize(shapedText, glyphSize, boxScale);\n const shapedLabelLength = getShapedLabelLength(shapedText, shapedIcon);\n const labelLength = shapedLabelLength * boxScale;\n\n // Is the line continued from outside the tile boundary?\n const isLineContinued = line[0].x === 0 || line[0].x === tileExtent || line[0].y === 0 || line[0].y === tileExtent;\n\n // Is the label long, relative to the spacing?\n // If so, adjust the spacing so there is always a minimum space of `spacing / 4` between label edges.\n if (spacing - labelLength < spacing / 4) {\n spacing = labelLength + spacing / 4;\n }\n\n // Offset the first anchor by:\n // Either half the label length plus a fixed extra offset if the line is not continued\n // Or half the spacing if the line is continued.\n\n // For non-continued lines, add a bit of fixed extra offset to avoid collisions at T intersections.\n const fixedExtraOffset = glyphSize * 2;\n\n const offset = !isLineContinued ?\n ((shapedLabelLength / 2 + fixedExtraOffset) * boxScale * overscaling) % spacing :\n (spacing / 2 * overscaling) % spacing;\n\n return resample(line, offset, spacing, angleWindowSize, maxAngle, labelLength, isLineContinued, false, tileExtent);\n}\n\nfunction resample(line, offset, spacing, angleWindowSize, maxAngle, labelLength, isLineContinued, placeAtMiddle, tileExtent) {\n\n const halfLabelLength = labelLength / 2;\n const lineLength = getLineLength(line);\n\n let distance = 0,\n markedDistance = offset - spacing;\n\n let anchors = [];\n\n for (let i = 0; i < line.length - 1; i++) {\n\n const a = line[i],\n b = line[i + 1];\n\n const segmentDist = a.dist(b),\n angle = b.angleTo(a);\n\n while (markedDistance + spacing < distance + segmentDist) {\n markedDistance += spacing;\n\n const t = (markedDistance - distance) / segmentDist,\n x = interpolates.number(a.x, b.x, t),\n y = interpolates.number(a.y, b.y, t);\n\n // Check that the point is within the tile boundaries and that\n // the label would fit before the beginning and end of the line\n // if placed at this point.\n if (x >= 0 && x < tileExtent && y >= 0 && y < tileExtent &&\n markedDistance - halfLabelLength >= 0 &&\n markedDistance + halfLabelLength <= lineLength) {\n const anchor = new Anchor(x, y, angle, i);\n anchor._round();\n\n if (!angleWindowSize || checkMaxAngle(line, anchor, labelLength, angleWindowSize, maxAngle)) {\n anchors.push(anchor);\n }\n }\n }\n\n distance += segmentDist;\n }\n\n if (!placeAtMiddle && !anchors.length && !isLineContinued) {\n // The first attempt at finding anchors at which labels can be placed failed.\n // Try again, but this time just try placing one anchor at the middle of the line.\n // This has the most effect for short lines in overscaled tiles, since the\n // initial offset used in overscaled tiles is calculated to align labels with positions in\n // parent tiles instead of placing the label as close to the beginning as possible.\n anchors = resample(line, distance / 2, spacing, angleWindowSize, maxAngle, labelLength, isLineContinued, true, tileExtent);\n }\n\n return anchors;\n}\n","import Point from '@mapbox/point-geometry';\n\nimport {GLYPH_PBF_BORDER} from '../style/parse_glyph_pbf';\n\nimport type {Anchor} from './anchor';\nimport type {Box, PositionedIcon, Shaping} from './shaping';\nimport {SHAPING_DEFAULT_OFFSET, applyTextFit} from './shaping';\nimport {IMAGE_PADDING} from '../render/image_atlas';\nimport type {SymbolStyleLayer} from '../style/style_layer/symbol_style_layer';\nimport type {Feature} from '@maplibre/maplibre-gl-style-spec';\nimport type {StyleImage} from '../style/style_image';\nimport ONE_EM from './one_em';\nimport {type Rect} from '../render/glyph_atlas';\n\n/**\n * A textured quad for rendering a single icon or glyph.\n *\n * The zoom range the glyph can be shown is defined by minScale and maxScale.\n *\n * @param tl - The offset of the top left corner from the anchor.\n * @param tr - The offset of the top right corner from the anchor.\n * @param bl - The offset of the bottom left corner from the anchor.\n * @param br - The offset of the bottom right corner from the anchor.\n * @param tex - The texture coordinates.\n */\nexport type SymbolQuad = {\n tl: Point;\n tr: Point;\n bl: Point;\n br: Point;\n tex: {\n x: number;\n y: number;\n w: number;\n h: number;\n };\n pixelOffsetTL: Point;\n pixelOffsetBR: Point;\n writingMode: any | void;\n glyphOffset: [number, number];\n sectionIndex: number;\n isSDF: boolean;\n minFontScaleX: number;\n minFontScaleY: number;\n};\n\n// If you have a 10px icon that isn't perfectly aligned to the pixel grid it will cover 11 actual\n// pixels. The quad needs to be padded to account for this, otherwise they'll look slightly clipped\n// on one edge in some cases.\nconst border = IMAGE_PADDING;\n\n/**\n * Create the quads used for rendering an icon.\n */\nexport function getIconQuads(\n shapedIcon: PositionedIcon,\n iconRotate: number,\n isSDFIcon: boolean,\n hasIconTextFit: boolean\n): Array {\n const quads = [];\n\n const image = shapedIcon.image;\n const pixelRatio = image.pixelRatio;\n const imageWidth = image.paddedRect.w - 2 * border;\n const imageHeight = image.paddedRect.h - 2 * border;\n\n let icon: Box = {\n x1: shapedIcon.left,\n y1: shapedIcon.top,\n x2: shapedIcon.right,\n y2: shapedIcon.bottom\n };\n\n const stretchX = image.stretchX || [[0, imageWidth]];\n const stretchY = image.stretchY || [[0, imageHeight]];\n\n const reduceRanges = (sum, range) => sum + range[1] - range[0];\n const stretchWidth = stretchX.reduce(reduceRanges, 0);\n const stretchHeight = stretchY.reduce(reduceRanges, 0);\n const fixedWidth = imageWidth - stretchWidth;\n const fixedHeight = imageHeight - stretchHeight;\n\n let stretchOffsetX = 0;\n let stretchContentWidth = stretchWidth;\n let stretchOffsetY = 0;\n let stretchContentHeight = stretchHeight;\n let fixedOffsetX = 0;\n let fixedContentWidth = fixedWidth;\n let fixedOffsetY = 0;\n let fixedContentHeight = fixedHeight;\n\n if (image.content && hasIconTextFit) {\n const content = image.content;\n const contentWidth = content[2] - content[0];\n const contentHeight = content[3] - content[1];\n // Constrict content area to fit target aspect ratio\n if (image.textFitWidth || image.textFitHeight) {\n icon = applyTextFit(shapedIcon);\n }\n stretchOffsetX = sumWithinRange(stretchX, 0, content[0]);\n stretchOffsetY = sumWithinRange(stretchY, 0, content[1]);\n stretchContentWidth = sumWithinRange(stretchX, content[0], content[2]);\n stretchContentHeight = sumWithinRange(stretchY, content[1], content[3]);\n fixedOffsetX = content[0] - stretchOffsetX;\n fixedOffsetY = content[1] - stretchOffsetY;\n fixedContentWidth = contentWidth - stretchContentWidth;\n fixedContentHeight = contentHeight - stretchContentHeight;\n }\n\n const iconLeft = icon.x1;\n const iconTop = icon.y1;\n const iconWidth = icon.x2 - iconLeft;\n const iconHeight = icon.y2 - iconTop;\n\n const makeBox = (left, top, right, bottom) => {\n\n const leftEm = getEmOffset(left.stretch - stretchOffsetX, stretchContentWidth, iconWidth, iconLeft);\n const leftPx = getPxOffset(left.fixed - fixedOffsetX, fixedContentWidth, left.stretch, stretchWidth);\n\n const topEm = getEmOffset(top.stretch - stretchOffsetY, stretchContentHeight, iconHeight, iconTop);\n const topPx = getPxOffset(top.fixed - fixedOffsetY, fixedContentHeight, top.stretch, stretchHeight);\n\n const rightEm = getEmOffset(right.stretch - stretchOffsetX, stretchContentWidth, iconWidth, iconLeft);\n const rightPx = getPxOffset(right.fixed - fixedOffsetX, fixedContentWidth, right.stretch, stretchWidth);\n\n const bottomEm = getEmOffset(bottom.stretch - stretchOffsetY, stretchContentHeight, iconHeight, iconTop);\n const bottomPx = getPxOffset(bottom.fixed - fixedOffsetY, fixedContentHeight, bottom.stretch, stretchHeight);\n\n const tl = new Point(leftEm, topEm);\n const tr = new Point(rightEm, topEm);\n const br = new Point(rightEm, bottomEm);\n const bl = new Point(leftEm, bottomEm);\n const pixelOffsetTL = new Point(leftPx / pixelRatio, topPx / pixelRatio);\n const pixelOffsetBR = new Point(rightPx / pixelRatio, bottomPx / pixelRatio);\n\n const angle = iconRotate * Math.PI / 180;\n\n if (angle) {\n const sin = Math.sin(angle),\n cos = Math.cos(angle),\n matrix = [cos, -sin, sin, cos];\n\n tl._matMult(matrix);\n tr._matMult(matrix);\n bl._matMult(matrix);\n br._matMult(matrix);\n }\n\n const x1 = left.stretch + left.fixed;\n const x2 = right.stretch + right.fixed;\n const y1 = top.stretch + top.fixed;\n const y2 = bottom.stretch + bottom.fixed;\n\n const subRect = {\n x: image.paddedRect.x + border + x1,\n y: image.paddedRect.y + border + y1,\n w: x2 - x1,\n h: y2 - y1\n };\n\n const minFontScaleX = fixedContentWidth / pixelRatio / iconWidth;\n const minFontScaleY = fixedContentHeight / pixelRatio / iconHeight;\n\n // Icon quad is padded, so texture coordinates also need to be padded.\n return {tl, tr, bl, br, tex: subRect, writingMode: undefined, glyphOffset: [0, 0], sectionIndex: 0, pixelOffsetTL, pixelOffsetBR, minFontScaleX, minFontScaleY, isSDF: isSDFIcon};\n };\n\n if (!hasIconTextFit || (!image.stretchX && !image.stretchY)) {\n quads.push(makeBox(\n {fixed: 0, stretch: -1},\n {fixed: 0, stretch: -1},\n {fixed: 0, stretch: imageWidth + 1},\n {fixed: 0, stretch: imageHeight + 1}));\n } else {\n const xCuts = stretchZonesToCuts(stretchX, fixedWidth, stretchWidth);\n const yCuts = stretchZonesToCuts(stretchY, fixedHeight, stretchHeight);\n\n for (let xi = 0; xi < xCuts.length - 1; xi++) {\n const x1 = xCuts[xi];\n const x2 = xCuts[xi + 1];\n for (let yi = 0; yi < yCuts.length - 1; yi++) {\n const y1 = yCuts[yi];\n const y2 = yCuts[yi + 1];\n quads.push(makeBox(x1, y1, x2, y2));\n }\n }\n }\n\n return quads;\n}\n\nfunction sumWithinRange(ranges, min, max) {\n let sum = 0;\n for (const range of ranges) {\n sum += Math.max(min, Math.min(max, range[1])) - Math.max(min, Math.min(max, range[0]));\n }\n return sum;\n}\n\nfunction stretchZonesToCuts(stretchZones, fixedSize, stretchSize) {\n const cuts = [{fixed: -border, stretch: 0}];\n\n for (const [c1, c2] of stretchZones) {\n const last = cuts[cuts.length - 1];\n cuts.push({\n fixed: c1 - last.stretch,\n stretch: last.stretch\n });\n cuts.push({\n fixed: c1 - last.stretch,\n stretch: last.stretch + (c2 - c1)\n });\n }\n cuts.push({\n fixed: fixedSize + border,\n stretch: stretchSize\n });\n return cuts;\n}\n\nfunction getEmOffset(stretchOffset, stretchSize, iconSize, iconOffset) {\n return stretchOffset / stretchSize * iconSize + iconOffset;\n}\n\nfunction getPxOffset(fixedOffset, fixedSize, stretchOffset, stretchSize) {\n return fixedOffset - fixedSize * stretchOffset / stretchSize;\n}\n\n/**\n * Create the quads used for rendering a text label.\n */\nexport function getGlyphQuads(\n anchor: Anchor,\n shaping: Shaping,\n textOffset: [number, number],\n layer: SymbolStyleLayer,\n alongLine: boolean,\n feature: Feature,\n imageMap: {[_: string]: StyleImage},\n allowVerticalPlacement: boolean\n): Array {\n\n const textRotate = layer.layout.get('text-rotate').evaluate(feature, {}) * Math.PI / 180;\n const quads = [];\n\n for (const line of shaping.positionedLines) {\n for (const positionedGlyph of line.positionedGlyphs) {\n if (!positionedGlyph.rect) continue;\n const textureRect: Rect = positionedGlyph.rect || {} as Rect;\n\n // The rects have an additional buffer that is not included in their size.\n const glyphPadding = 1.0;\n let rectBuffer = GLYPH_PBF_BORDER + glyphPadding;\n let isSDF = true;\n let pixelRatio = 1.0;\n let lineOffset = 0.0;\n\n const rotateVerticalGlyph = (alongLine || allowVerticalPlacement) && positionedGlyph.vertical;\n const halfAdvance = positionedGlyph.metrics.advance * positionedGlyph.scale / 2;\n\n // Align images and scaled glyphs in the middle of a vertical line.\n if (allowVerticalPlacement && shaping.verticalizable) {\n const scaledGlyphOffset = (positionedGlyph.scale - 1) * ONE_EM;\n const imageOffset = (ONE_EM - positionedGlyph.metrics.width * positionedGlyph.scale) / 2;\n lineOffset = line.lineOffset / 2 - (positionedGlyph.imageName ? -imageOffset : scaledGlyphOffset);\n }\n\n if (positionedGlyph.imageName) {\n const image = imageMap[positionedGlyph.imageName];\n isSDF = image.sdf;\n pixelRatio = image.pixelRatio;\n rectBuffer = IMAGE_PADDING / pixelRatio;\n }\n\n const glyphOffset = alongLine ?\n [positionedGlyph.x + halfAdvance, positionedGlyph.y] :\n [0, 0];\n\n let builtInOffset: [number, number] = alongLine ?\n [0, 0] :\n [positionedGlyph.x + halfAdvance + textOffset[0], positionedGlyph.y + textOffset[1] - lineOffset];\n\n let verticalizedLabelOffset = [0, 0] as [number, number];\n if (rotateVerticalGlyph) {\n // Vertical POI labels that are rotated 90deg CW and whose glyphs must preserve upright orientation\n // need to be rotated 90deg CCW. After a quad is rotated, it is translated to the original built-in offset.\n verticalizedLabelOffset = builtInOffset;\n builtInOffset = [0, 0];\n }\n\n const textureScale = positionedGlyph.metrics.isDoubleResolution ? 2 : 1;\n\n const x1 = (positionedGlyph.metrics.left - rectBuffer) * positionedGlyph.scale - halfAdvance + builtInOffset[0];\n const y1 = (-positionedGlyph.metrics.top - rectBuffer) * positionedGlyph.scale + builtInOffset[1];\n const x2 = x1 + textureRect.w / textureScale * positionedGlyph.scale / pixelRatio;\n const y2 = y1 + textureRect.h / textureScale * positionedGlyph.scale / pixelRatio;\n\n const tl = new Point(x1, y1);\n const tr = new Point(x2, y1);\n const bl = new Point(x1, y2);\n const br = new Point(x2, y2);\n\n if (rotateVerticalGlyph) {\n // Vertical-supporting glyphs are laid out in 24x24 point boxes (1 square em)\n // In horizontal orientation, the y values for glyphs are below the midline\n // and we use a \"yOffset\" of -17 to pull them up to the middle.\n // By rotating counter-clockwise around the point at the center of the left\n // edge of a 24x24 layout box centered below the midline, we align the center\n // of the glyphs with the horizontal midline, so the yOffset is no longer\n // necessary, but we also pull the glyph to the left along the x axis.\n // The y coordinate includes baseline yOffset, thus needs to be accounted\n // for when glyph is rotated and translated.\n const center = new Point(-halfAdvance, halfAdvance - SHAPING_DEFAULT_OFFSET);\n const verticalRotation = -Math.PI / 2;\n\n // xHalfWidthOffsetCorrection is a difference between full-width and half-width\n // advance, should be 0 for full-width glyphs and will pull up half-width glyphs.\n const xHalfWidthOffsetCorrection = ONE_EM / 2 - halfAdvance;\n const yImageOffsetCorrection = positionedGlyph.imageName ? xHalfWidthOffsetCorrection : 0.0;\n const halfWidthOffsetCorrection = new Point(5 - SHAPING_DEFAULT_OFFSET - xHalfWidthOffsetCorrection, -yImageOffsetCorrection);\n const verticalOffsetCorrection = new Point(...verticalizedLabelOffset);\n tl._rotateAround(verticalRotation, center)._add(halfWidthOffsetCorrection)._add(verticalOffsetCorrection);\n tr._rotateAround(verticalRotation, center)._add(halfWidthOffsetCorrection)._add(verticalOffsetCorrection);\n bl._rotateAround(verticalRotation, center)._add(halfWidthOffsetCorrection)._add(verticalOffsetCorrection);\n br._rotateAround(verticalRotation, center)._add(halfWidthOffsetCorrection)._add(verticalOffsetCorrection);\n }\n\n if (textRotate) {\n const sin = Math.sin(textRotate),\n cos = Math.cos(textRotate),\n matrix = [cos, -sin, sin, cos];\n\n tl._matMult(matrix);\n tr._matMult(matrix);\n bl._matMult(matrix);\n br._matMult(matrix);\n }\n\n const pixelOffsetTL = new Point(0, 0);\n const pixelOffsetBR = new Point(0, 0);\n const minFontScaleX = 0;\n const minFontScaleY = 0;\n quads.push({tl, tr, bl, br, tex: textureRect, writingMode: shaping.writingMode, glyphOffset, sectionIndex: positionedGlyph.sectionIndex, isSDF, pixelOffsetTL, pixelOffsetBR, minFontScaleX, minFontScaleY});\n }\n }\n\n return quads;\n}\n","import type {CollisionBoxArray} from '../data/array_types.g';\nimport Point from '@mapbox/point-geometry';\nimport type {Anchor} from './anchor';\nimport {type SymbolPadding} from '../style/style_layer/symbol_style_layer';\nimport {applyTextFit} from './shaping';\n\n/**\n * A CollisionFeature represents the area of the tile covered by a single label.\n * It is used with CollisionIndex to check if the label overlaps with any\n * previous labels. A CollisionFeature is mostly just a set of CollisionBox\n * objects.\n */\nexport class CollisionFeature {\n boxStartIndex: number;\n boxEndIndex: number;\n circleDiameter: number;\n\n /**\n * Create a CollisionFeature, adding its collision box data to the given collisionBoxArray in the process.\n * For line aligned labels a collision circle diameter is computed instead.\n *\n * @param anchor - The point along the line around which the label is anchored.\n * @param shaped - The text or icon shaping results.\n * @param boxScale - A magic number used to convert from glyph metrics units to geometry units.\n * @param padding - The amount of padding to add around the label edges.\n * @param alignLine - Whether the label is aligned with the line or the viewport.\n */\n constructor(collisionBoxArray: CollisionBoxArray,\n anchor: Anchor,\n featureIndex: number,\n sourceLayerIndex: number,\n bucketIndex: number,\n shaped: any,\n boxScale: number,\n padding: SymbolPadding,\n alignLine: boolean,\n rotate: number) {\n\n this.boxStartIndex = collisionBoxArray.length;\n\n if (alignLine) {\n // Compute height of the shape in glyph metrics and apply collision padding.\n // Note that the pixel based 'text-padding' is applied at runtime\n let top = shaped.top;\n let bottom = shaped.bottom;\n const collisionPadding = shaped.collisionPadding;\n\n if (collisionPadding) {\n top -= collisionPadding[1];\n bottom += collisionPadding[3];\n }\n\n let height = bottom - top;\n\n if (height > 0) {\n // set minimum box height to avoid very many small labels\n height = Math.max(10, height);\n this.circleDiameter = height;\n }\n } else {\n const icon = shaped.image?.content && (shaped.image.textFitWidth || shaped.image.textFitHeight) ?\n applyTextFit(shaped) :\n {\n x1: shaped.left,\n y1: shaped.top,\n x2: shaped.right,\n y2: shaped.bottom\n };\n\n // margin is in CSS order: [top, right, bottom, left]\n icon.y1 = icon.y1 * boxScale - padding[0];\n icon.y2 = icon.y2 * boxScale + padding[2];\n icon.x1 = icon.x1 * boxScale - padding[3];\n icon.x2 = icon.x2 * boxScale + padding[1];\n\n const collisionPadding = shaped.collisionPadding;\n if (collisionPadding) {\n icon.x1 -= collisionPadding[0] * boxScale;\n icon.y1 -= collisionPadding[1] * boxScale;\n icon.x2 += collisionPadding[2] * boxScale;\n icon.y2 += collisionPadding[3] * boxScale;\n }\n\n if (rotate) {\n // Account for *-rotate in point collision boxes\n // See https://github.com/mapbox/mapbox-gl-js/issues/6075\n // Doesn't account for icon-text-fit\n\n const tl = new Point(icon.x1, icon.y1);\n const tr = new Point(icon.x2, icon.y1);\n const bl = new Point(icon.x1, icon.y2);\n const br = new Point(icon.x2, icon.y2);\n\n const rotateRadians = rotate * Math.PI / 180;\n\n tl._rotate(rotateRadians);\n tr._rotate(rotateRadians);\n bl._rotate(rotateRadians);\n br._rotate(rotateRadians);\n\n // Collision features require an \"on-axis\" geometry,\n // so take the envelope of the rotated geometry\n // (may be quite large for wide labels rotated 45 degrees)\n icon.x1 = Math.min(tl.x, tr.x, bl.x, br.x);\n icon.x2 = Math.max(tl.x, tr.x, bl.x, br.x);\n icon.y1 = Math.min(tl.y, tr.y, bl.y, br.y);\n icon.y2 = Math.max(tl.y, tr.y, bl.y, br.y);\n }\n collisionBoxArray.emplaceBack(anchor.x, anchor.y, icon.x1, icon.y1, icon.x2, icon.y2, featureIndex, sourceLayerIndex, bucketIndex);\n }\n\n this.boxEndIndex = collisionBoxArray.length;\n }\n}\n","\nexport default class TinyQueue {\n constructor(data = [], compare = (a, b) => (a < b ? -1 : a > b ? 1 : 0)) {\n this.data = data;\n this.length = this.data.length;\n this.compare = compare;\n\n if (this.length > 0) {\n for (let i = (this.length >> 1) - 1; i >= 0; i--) this._down(i);\n }\n }\n\n push(item) {\n this.data.push(item);\n this._up(this.length++);\n }\n\n pop() {\n if (this.length === 0) return undefined;\n\n const top = this.data[0];\n const bottom = this.data.pop();\n\n if (--this.length > 0) {\n this.data[0] = bottom;\n this._down(0);\n }\n\n return top;\n }\n\n peek() {\n return this.data[0];\n }\n\n _up(pos) {\n const {data, compare} = this;\n const item = data[pos];\n\n while (pos > 0) {\n const parent = (pos - 1) >> 1;\n const current = data[parent];\n if (compare(item, current) >= 0) break;\n data[pos] = current;\n pos = parent;\n }\n\n data[pos] = item;\n }\n\n _down(pos) {\n const {data, compare} = this;\n const halfLength = this.length >> 1;\n const item = data[pos];\n\n while (pos < halfLength) {\n let bestChild = (pos << 1) + 1; // initially it is the left child\n const right = bestChild + 1;\n\n if (right < this.length && compare(data[right], data[bestChild]) < 0) {\n bestChild = right;\n }\n if (compare(data[bestChild], item) >= 0) break;\n\n data[pos] = data[bestChild];\n pos = bestChild;\n }\n\n data[pos] = item;\n }\n}\n","import Queue from 'tinyqueue';\n\nimport Point from '@mapbox/point-geometry';\nimport {distToSegmentSquared} from './intersection_tests';\n\n/**\n * Finds an approximation of a polygon's Pole Of Inaccessibility https://en.wikipedia.org/wiki/Pole_of_inaccessibility\n * This is a copy of https://github.com/mapbox/polylabel adapted to use Points\n *\n * @param polygonRings - first item in array is the outer ring followed optionally by the list of holes, should be an element of the result of util/classify_rings\n * @param precision - Specified in input coordinate units. If 0 returns after first run, if `> 0` repeatedly narrows the search space until the radius of the area searched for the best pole is less than precision\n * @param debug - Print some statistics to the console during execution\n * @returns Pole of Inaccessibility.\n */\nexport function findPoleOfInaccessibility(\n polygonRings: Array>,\n precision: number = 1,\n debug: boolean = false\n): Point {\n // find the bounding box of the outer ring\n let minX = Infinity, minY = Infinity, maxX = -Infinity, maxY = -Infinity;\n const outerRing = polygonRings[0];\n for (let i = 0; i < outerRing.length; i++) {\n const p = outerRing[i];\n if (!i || p.x < minX) minX = p.x;\n if (!i || p.y < minY) minY = p.y;\n if (!i || p.x > maxX) maxX = p.x;\n if (!i || p.y > maxY) maxY = p.y;\n }\n\n const width = maxX - minX;\n const height = maxY - minY;\n const cellSize = Math.min(width, height);\n let h = cellSize / 2;\n\n // a priority queue of cells in order of their \"potential\" (max distance to polygon)\n const cellQueue = new Queue([], compareMax);\n\n if (cellSize === 0) return new Point(minX, minY);\n\n // cover polygon with initial cells\n for (let x = minX; x < maxX; x += cellSize) {\n for (let y = minY; y < maxY; y += cellSize) {\n cellQueue.push(new Cell(x + h, y + h, h, polygonRings));\n }\n }\n\n // take centroid as the first best guess\n let bestCell = getCentroidCell(polygonRings);\n let numProbes = cellQueue.length;\n\n while (cellQueue.length) {\n // pick the most promising cell from the queue\n const cell = cellQueue.pop();\n\n // update the best cell if we found a better one\n if (cell.d > bestCell.d || !bestCell.d) {\n bestCell = cell;\n if (debug) console.log('found best %d after %d probes', Math.round(1e4 * cell.d) / 1e4, numProbes);\n }\n\n // do not drill down further if there's no chance of a better solution\n if (cell.max - bestCell.d <= precision) continue;\n\n // split the cell into four cells\n h = cell.h / 2;\n cellQueue.push(new Cell(cell.p.x - h, cell.p.y - h, h, polygonRings));\n cellQueue.push(new Cell(cell.p.x + h, cell.p.y - h, h, polygonRings));\n cellQueue.push(new Cell(cell.p.x - h, cell.p.y + h, h, polygonRings));\n cellQueue.push(new Cell(cell.p.x + h, cell.p.y + h, h, polygonRings));\n numProbes += 4;\n }\n\n if (debug) {\n console.log(`num probes: ${numProbes}`);\n console.log(`best distance: ${bestCell.d}`);\n }\n\n return bestCell.p;\n}\n\nfunction compareMax(a, b) {\n return b.max - a.max;\n}\n\nfunction Cell(x, y, h, polygon) {\n this.p = new Point(x, y);\n this.h = h; // half the cell size\n this.d = pointToPolygonDist(this.p, polygon); // distance from cell center to polygon\n this.max = this.d + this.h * Math.SQRT2; // max distance to polygon within a cell\n}\n\n// signed distance from point to polygon outline (negative if point is outside)\nfunction pointToPolygonDist(p, polygon) {\n let inside = false;\n let minDistSq = Infinity;\n\n for (let k = 0; k < polygon.length; k++) {\n const ring = polygon[k];\n\n for (let i = 0, len = ring.length, j = len - 1; i < len; j = i++) {\n const a = ring[i];\n const b = ring[j];\n\n if ((a.y > p.y !== b.y > p.y) &&\n (p.x < (b.x - a.x) * (p.y - a.y) / (b.y - a.y) + a.x)) inside = !inside;\n\n minDistSq = Math.min(minDistSq, distToSegmentSquared(p, a, b));\n }\n }\n\n return (inside ? 1 : -1) * Math.sqrt(minDistSq);\n}\n\n// get polygon centroid\nfunction getCentroidCell(polygon) {\n let area = 0;\n let x = 0;\n let y = 0;\n const points = polygon[0];\n for (let i = 0, len = points.length, j = len - 1; i < len; j = i++) {\n const a = points[i];\n const b = points[j];\n const f = a.x * b.y - b.x * a.y;\n x += (a.x + b.x) * f;\n y += (a.y + b.y) * f;\n area += f * 3;\n }\n return new Cell(x / area, y / area, 0, polygon);\n}\n","import {VariableAnchorOffsetCollection, type VariableAnchorOffsetCollectionSpecification} from '@maplibre/maplibre-gl-style-spec';\nimport {type SymbolFeature} from '../../data/bucket/symbol_bucket';\nimport {type CanonicalTileID} from '../../source/tile_id';\nimport ONE_EM from '../../symbol/one_em';\nimport {type SymbolStyleLayer} from './symbol_style_layer';\n\nexport enum TextAnchorEnum {\n 'center' = 1,\n 'left' = 2,\n 'right' = 3,\n 'top' = 4,\n 'bottom' = 5,\n 'top-left' = 6,\n 'top-right' = 7,\n 'bottom-left' = 8,\n 'bottom-right' = 9\n}\n\nexport type TextAnchor = keyof typeof TextAnchorEnum;\n\n// The radial offset is to the edge of the text box\n// In the horizontal direction, the edge of the text box is where glyphs start\n// But in the vertical direction, the glyphs appear to \"start\" at the baseline\n// We don't actually load baseline data, but we assume an offset of ONE_EM - 17\n// (see \"yOffset\" in shaping.js)\nconst baselineOffset = 7;\nexport const INVALID_TEXT_OFFSET = Number.POSITIVE_INFINITY;\n\nexport function evaluateVariableOffset(anchor: TextAnchor, offset: [number, number]): [number, number] {\n\n function fromRadialOffset(anchor: TextAnchor, radialOffset: number): [number, number] {\n let x = 0, y = 0;\n if (radialOffset < 0) radialOffset = 0; // Ignore negative offset.\n // solve for r where r^2 + r^2 = radialOffset^2\n const hypotenuse = radialOffset / Math.SQRT2;\n switch (anchor) {\n case 'top-right':\n case 'top-left':\n y = hypotenuse - baselineOffset;\n break;\n case 'bottom-right':\n case 'bottom-left':\n y = -hypotenuse + baselineOffset;\n break;\n case 'bottom':\n y = -radialOffset + baselineOffset;\n break;\n case 'top':\n y = radialOffset - baselineOffset;\n break;\n }\n\n switch (anchor) {\n case 'top-right':\n case 'bottom-right':\n x = -hypotenuse;\n break;\n case 'top-left':\n case 'bottom-left':\n x = hypotenuse;\n break;\n case 'left':\n x = radialOffset;\n break;\n case 'right':\n x = -radialOffset;\n break;\n }\n\n return [x, y];\n }\n\n function fromTextOffset(anchor: TextAnchor, offsetX: number, offsetY: number): [number, number] {\n let x = 0, y = 0;\n // Use absolute offset values.\n offsetX = Math.abs(offsetX);\n offsetY = Math.abs(offsetY);\n\n switch (anchor) {\n case 'top-right':\n case 'top-left':\n case 'top':\n y = offsetY - baselineOffset;\n break;\n case 'bottom-right':\n case 'bottom-left':\n case 'bottom':\n y = -offsetY + baselineOffset;\n break;\n }\n\n switch (anchor) {\n case 'top-right':\n case 'bottom-right':\n case 'right':\n x = -offsetX;\n break;\n case 'top-left':\n case 'bottom-left':\n case 'left':\n x = offsetX;\n break;\n }\n\n return [x, y];\n }\n\n return (offset[1] !== INVALID_TEXT_OFFSET) ? fromTextOffset(anchor, offset[0], offset[1]) : fromRadialOffset(anchor, offset[0]);\n}\n\n// Helper to support both text-variable-anchor and text-variable-anchor-offset. Offset values converted from EMs to PXs\nexport function getTextVariableAnchorOffset(layer: SymbolStyleLayer, feature: SymbolFeature, canonical: CanonicalTileID): VariableAnchorOffsetCollection | null {\n const layout = layer.layout;\n // If style specifies text-variable-anchor-offset, just return it\n const variableAnchorOffset = layout.get('text-variable-anchor-offset')?.evaluate(feature, {}, canonical);\n\n if (variableAnchorOffset) {\n const sourceValues = variableAnchorOffset.values;\n const destValues: VariableAnchorOffsetCollectionSpecification = [];\n\n // Convert offsets from EM to PX, and apply baseline shift\n for (let i = 0; i < sourceValues.length; i += 2) {\n const anchor = destValues[i] = sourceValues[i] as TextAnchor;\n const offset = (sourceValues[i + 1] as [number, number]).map(t => t * ONE_EM) as [number, number];\n\n if (anchor.startsWith('top')) {\n offset[1] -= baselineOffset;\n } else if (anchor.startsWith('bottom')) {\n offset[1] += baselineOffset;\n }\n\n destValues[i + 1] = offset;\n }\n\n return new VariableAnchorOffsetCollection(destValues);\n }\n\n // If style specifies text-variable-anchor, convert to the new format\n const variableAnchor = layout.get('text-variable-anchor');\n\n if (variableAnchor) {\n let textOffset: [number, number];\n const unevaluatedLayout = layer._unevaluatedLayout;\n\n // The style spec says don't use `text-offset` and `text-radial-offset` together\n // but doesn't actually specify what happens if you use both. We go with the radial offset.\n if (unevaluatedLayout.getValue('text-radial-offset') !== undefined) {\n textOffset = [layout.get('text-radial-offset').evaluate(feature, {}, canonical) * ONE_EM, INVALID_TEXT_OFFSET];\n } else {\n textOffset = layout.get('text-offset').evaluate(feature, {}, canonical).map(t => t * ONE_EM) as [number, number];\n }\n\n const anchorOffsets: VariableAnchorOffsetCollectionSpecification = [];\n\n for (const anchor of variableAnchor) {\n anchorOffsets.push(anchor, evaluateVariableOffset(anchor, textOffset));\n }\n\n return new VariableAnchorOffsetCollection(anchorOffsets);\n }\n\n return null;\n}\n","import {Anchor} from './anchor';\n\nimport {getAnchors, getCenterAnchor} from './get_anchors';\nimport {clipLine} from './clip_line';\nimport {shapeText, shapeIcon, WritingMode, fitIconToText} from './shaping';\nimport {getGlyphQuads, getIconQuads} from './quads';\nimport {CollisionFeature} from './collision_feature';\nimport {warnOnce} from '../util/util';\nimport {\n allowsVerticalWritingMode,\n allowsLetterSpacing\n} from '../util/script_detection';\nimport {findPoleOfInaccessibility} from '../util/find_pole_of_inaccessibility';\nimport {EXTENT} from '../data/extent';\nimport {SymbolBucket} from '../data/bucket/symbol_bucket';\nimport {EvaluationParameters} from '../style/evaluation_parameters';\nimport {SIZE_PACK_FACTOR, MAX_PACKED_SIZE, MAX_GLYPH_ICON_SIZE} from './symbol_size';\nimport ONE_EM from './one_em';\nimport type {CanonicalTileID} from '../source/tile_id';\nimport type {Shaping, PositionedIcon, TextJustify} from './shaping';\nimport type {CollisionBoxArray, TextAnchorOffsetArray} from '../data/array_types.g';\nimport type {SymbolFeature} from '../data/bucket/symbol_bucket';\nimport type {StyleImage} from '../style/style_image';\nimport type {StyleGlyph} from '../style/style_glyph';\nimport type {SymbolStyleLayer} from '../style/style_layer/symbol_style_layer';\nimport type {ImagePosition} from '../render/image_atlas';\nimport type {GlyphPosition} from '../render/glyph_atlas';\nimport type {PossiblyEvaluatedPropertyValue} from '../style/properties';\n\nimport type Point from '@mapbox/point-geometry';\nimport murmur3 from 'murmurhash-js';\nimport {getIconPadding, type SymbolPadding} from '../style/style_layer/symbol_style_layer';\nimport {type VariableAnchorOffsetCollection, classifyRings} from '@maplibre/maplibre-gl-style-spec';\nimport {getTextVariableAnchorOffset, evaluateVariableOffset, INVALID_TEXT_OFFSET, type TextAnchor, TextAnchorEnum} from '../style/style_layer/variable_text_anchor';\nimport {subdivideVertexLine} from '../render/subdivision';\nimport type {SubdivisionGranularitySetting} from '../render/subdivision_granularity_settings';\n\n// The symbol layout process needs `text-size` evaluated at up to five different zoom levels, and\n// `icon-size` at up to three:\n//\n// 1. `text-size` at the zoom level of the bucket. Used to calculate a per-feature size for source `text-size`\n// expressions, and to calculate the box dimensions for icon-text-fit.\n// 2. `icon-size` at the zoom level of the bucket. Used to calculate a per-feature size for source `icon-size`\n// expressions.\n// 3. `text-size` and `icon-size` at the zoom level of the bucket, plus one. Used to calculate collision boxes.\n// 4. `text-size` at zoom level 18. Used for something line-symbol-placement-related.\n// 5. For composite `*-size` expressions: two zoom levels of curve stops that \"cover\" the zoom level of the\n// bucket. These go into a vertex buffer and are used by the shader to interpolate the size at render time.\n//\n// (1) and (2) are stored in `bucket.layers[0].layout`. The remainder are below.\n//\ntype Sizes = {\n layoutTextSize: PossiblyEvaluatedPropertyValue; // (3),\n layoutIconSize: PossiblyEvaluatedPropertyValue; // (3),\n textMaxSize: PossiblyEvaluatedPropertyValue; // (4),\n compositeTextSizes: [PossiblyEvaluatedPropertyValue, PossiblyEvaluatedPropertyValue]; // (5),\n compositeIconSizes: [PossiblyEvaluatedPropertyValue, PossiblyEvaluatedPropertyValue]; // (5)\n};\n\ntype ShapedTextOrientations = {\n vertical: Shaping | false;\n horizontal: Record;\n};\n\nexport function performSymbolLayout(args: {\n bucket: SymbolBucket;\n glyphMap: {\n [_: string]: {\n [x: number]: StyleGlyph;\n };\n };\n glyphPositions: {\n [_: string]: {\n [x: number]: GlyphPosition;\n };\n };\n imageMap: {[_: string]: StyleImage};\n imagePositions: {[_: string]: ImagePosition};\n showCollisionBoxes: boolean;\n canonical: CanonicalTileID;\n subdivisionGranularity: SubdivisionGranularitySetting;\n}) {\n args.bucket.createArrays();\n\n const tileSize = 512 * args.bucket.overscaling;\n args.bucket.tilePixelRatio = EXTENT / tileSize;\n args.bucket.compareText = {};\n args.bucket.iconsNeedLinear = false;\n\n const layer = args.bucket.layers[0];\n const layout = layer.layout;\n const unevaluatedLayoutValues = layer._unevaluatedLayout._values;\n\n const sizes: Sizes = {\n // Filled in below, if *SizeData.kind is 'composite'\n // compositeIconSizes: undefined,\n // compositeTextSizes: undefined,\n layoutIconSize: unevaluatedLayoutValues['icon-size'].possiblyEvaluate(new EvaluationParameters(args.bucket.zoom + 1), args.canonical),\n layoutTextSize: unevaluatedLayoutValues['text-size'].possiblyEvaluate(new EvaluationParameters(args.bucket.zoom + 1), args.canonical),\n textMaxSize: unevaluatedLayoutValues['text-size'].possiblyEvaluate(new EvaluationParameters(18))\n } as Sizes;\n\n if (args.bucket.textSizeData.kind === 'composite') {\n const {minZoom, maxZoom} = args.bucket.textSizeData;\n sizes.compositeTextSizes = [\n unevaluatedLayoutValues['text-size'].possiblyEvaluate(new EvaluationParameters(minZoom), args.canonical),\n unevaluatedLayoutValues['text-size'].possiblyEvaluate(new EvaluationParameters(maxZoom), args.canonical)\n ];\n }\n\n if (args.bucket.iconSizeData.kind === 'composite') {\n const {minZoom, maxZoom} = args.bucket.iconSizeData;\n sizes.compositeIconSizes = [\n unevaluatedLayoutValues['icon-size'].possiblyEvaluate(new EvaluationParameters(minZoom), args.canonical),\n unevaluatedLayoutValues['icon-size'].possiblyEvaluate(new EvaluationParameters(maxZoom), args.canonical)\n ];\n }\n\n const lineHeight = layout.get('text-line-height') * ONE_EM;\n const textAlongLine = layout.get('text-rotation-alignment') !== 'viewport' && layout.get('symbol-placement') !== 'point';\n const keepUpright = layout.get('text-keep-upright');\n const textSize = layout.get('text-size');\n\n for (const feature of args.bucket.features) {\n const fontstack = layout.get('text-font').evaluate(feature, {}, args.canonical).join(',');\n const layoutTextSizeThisZoom = textSize.evaluate(feature, {}, args.canonical);\n const layoutTextSize = sizes.layoutTextSize.evaluate(feature, {}, args.canonical);\n const layoutIconSize = sizes.layoutIconSize.evaluate(feature, {}, args.canonical);\n\n const shapedTextOrientations: ShapedTextOrientations = {\n horizontal: {} as Record,\n vertical: undefined\n };\n const text = feature.text;\n let textOffset: [number, number] = [0, 0];\n if (text) {\n const unformattedText = text.toString();\n const spacing = layout.get('text-letter-spacing').evaluate(feature, {}, args.canonical) * ONE_EM;\n const spacingIfAllowed = allowsLetterSpacing(unformattedText) ? spacing : 0;\n\n const textAnchor = layout.get('text-anchor').evaluate(feature, {}, args.canonical);\n const variableAnchorOffset = getTextVariableAnchorOffset(layer, feature, args.canonical);\n\n if (!variableAnchorOffset) {\n const radialOffset = layout.get('text-radial-offset').evaluate(feature, {}, args.canonical);\n // Layers with variable anchors use the `text-radial-offset` property and the [x, y] offset vector\n // is calculated at placement time instead of layout time\n if (radialOffset) {\n // The style spec says don't use `text-offset` and `text-radial-offset` together\n // but doesn't actually specify what happens if you use both. We go with the radial offset.\n textOffset = evaluateVariableOffset(textAnchor, [radialOffset * ONE_EM, INVALID_TEXT_OFFSET]);\n } else {\n textOffset = (layout.get('text-offset').evaluate(feature, {}, args.canonical).map(t => t * ONE_EM) as [number, number]);\n }\n }\n\n let textJustify = textAlongLine ?\n 'center' :\n layout.get('text-justify').evaluate(feature, {}, args.canonical);\n\n const symbolPlacement = layout.get('symbol-placement');\n const maxWidth = symbolPlacement === 'point' ?\n layout.get('text-max-width').evaluate(feature, {}, args.canonical) * ONE_EM :\n Infinity;\n\n const addVerticalShapingForPointLabelIfNeeded = () => {\n if (args.bucket.allowVerticalPlacement && allowsVerticalWritingMode(unformattedText)) {\n // Vertical POI label placement is meant to be used for scripts that support vertical\n // writing mode, thus, default left justification is used. If Latin\n // scripts would need to be supported, this should take into account other justifications.\n shapedTextOrientations.vertical = shapeText(text, args.glyphMap, args.glyphPositions, args.imagePositions, fontstack, maxWidth, lineHeight, textAnchor,\n 'left', spacingIfAllowed, textOffset, WritingMode.vertical, true, layoutTextSize, layoutTextSizeThisZoom);\n }\n };\n\n // If this layer uses text-variable-anchor, generate shapings for all justification possibilities.\n if (!textAlongLine && variableAnchorOffset) {\n const justifications = new Set();\n\n if (textJustify === 'auto') {\n for (let i = 0; i < variableAnchorOffset.values.length; i += 2) {\n justifications.add(getAnchorJustification(variableAnchorOffset.values[i] as TextAnchor));\n }\n } else {\n justifications.add(textJustify);\n }\n\n let singleLine = false;\n for (const justification of justifications) {\n if (shapedTextOrientations.horizontal[justification]) continue;\n if (singleLine) {\n // If the shaping for the first justification was only a single line, we\n // can re-use it for the other justifications\n shapedTextOrientations.horizontal[justification] = shapedTextOrientations.horizontal[0];\n } else {\n // If using text-variable-anchor for the layer, we use a center anchor for all shapings and apply\n // the offsets for the anchor in the placement step.\n const shaping = shapeText(text, args.glyphMap, args.glyphPositions, args.imagePositions, fontstack, maxWidth, lineHeight, 'center',\n justification, spacingIfAllowed, textOffset, WritingMode.horizontal, false, layoutTextSize, layoutTextSizeThisZoom);\n if (shaping) {\n shapedTextOrientations.horizontal[justification] = shaping;\n singleLine = shaping.positionedLines.length === 1;\n }\n }\n }\n\n addVerticalShapingForPointLabelIfNeeded();\n } else {\n if (textJustify === 'auto') {\n textJustify = getAnchorJustification(textAnchor);\n }\n\n // Horizontal point or line label.\n const shaping = shapeText(text, args.glyphMap, args.glyphPositions, args.imagePositions, fontstack, maxWidth, lineHeight, textAnchor, textJustify, spacingIfAllowed,\n textOffset, WritingMode.horizontal, false, layoutTextSize, layoutTextSizeThisZoom);\n if (shaping) shapedTextOrientations.horizontal[textJustify] = shaping;\n\n // Vertical point label (if allowVerticalPlacement is enabled).\n addVerticalShapingForPointLabelIfNeeded();\n\n // Verticalized line label.\n if (allowsVerticalWritingMode(unformattedText) && textAlongLine && keepUpright) {\n shapedTextOrientations.vertical = shapeText(text, args.glyphMap, args.glyphPositions, args.imagePositions, fontstack, maxWidth, lineHeight, textAnchor, textJustify,\n spacingIfAllowed, textOffset, WritingMode.vertical, false, layoutTextSize, layoutTextSizeThisZoom);\n }\n }\n }\n\n let shapedIcon;\n let isSDFIcon = false;\n if (feature.icon && feature.icon.name) {\n const image = args.imageMap[feature.icon.name];\n if (image) {\n shapedIcon = shapeIcon(\n args.imagePositions[feature.icon.name],\n layout.get('icon-offset').evaluate(feature, {}, args.canonical),\n layout.get('icon-anchor').evaluate(feature, {}, args.canonical));\n // null/undefined SDF property treated same as default (false)\n isSDFIcon = !!image.sdf;\n if (args.bucket.sdfIcons === undefined) {\n args.bucket.sdfIcons = isSDFIcon;\n } else if (args.bucket.sdfIcons !== isSDFIcon) {\n warnOnce('Style sheet warning: Cannot mix SDF and non-SDF icons in one buffer');\n }\n if (image.pixelRatio !== args.bucket.pixelRatio) {\n args.bucket.iconsNeedLinear = true;\n } else if (layout.get('icon-rotate').constantOr(1) !== 0) {\n args.bucket.iconsNeedLinear = true;\n }\n }\n }\n\n const shapedText = getDefaultHorizontalShaping(shapedTextOrientations.horizontal) || shapedTextOrientations.vertical;\n args.bucket.iconsInText = shapedText ? shapedText.iconsInText : false;\n if (shapedText || shapedIcon) {\n addFeature(args.bucket, feature, shapedTextOrientations, shapedIcon, args.imageMap, sizes, layoutTextSize, layoutIconSize, textOffset, isSDFIcon, args.canonical, args.subdivisionGranularity);\n }\n }\n\n if (args.showCollisionBoxes) {\n args.bucket.generateCollisionDebugBuffers();\n }\n}\n\n// Choose the justification that matches the direction of the TextAnchor\nexport function getAnchorJustification(anchor: TextAnchor): TextJustify {\n switch (anchor) {\n case 'right':\n case 'top-right':\n case 'bottom-right':\n return 'right';\n case 'left':\n case 'top-left':\n case 'bottom-left':\n return 'left';\n }\n return 'center';\n}\n\n/**\n * Given a feature and its shaped text and icon data, add a 'symbol\n * instance' for each _possible_ placement of the symbol feature.\n * (At render timePlaceSymbols#place() selects which of these instances to\n * show or hide based on collisions with symbols in other layers.)\n */\nfunction addFeature(bucket: SymbolBucket,\n feature: SymbolFeature,\n shapedTextOrientations: ShapedTextOrientations,\n shapedIcon: PositionedIcon,\n imageMap: {[_: string]: StyleImage},\n sizes: Sizes,\n layoutTextSize: number,\n layoutIconSize: number,\n textOffset: [number, number],\n isSDFIcon: boolean,\n canonical: CanonicalTileID,\n subdivisionGranularity: SubdivisionGranularitySetting) {\n // To reduce the number of labels that jump around when zooming we need\n // to use a text-size value that is the same for all zoom levels.\n // bucket calculates text-size at a high zoom level so that all tiles can\n // use the same value when calculating anchor positions.\n let textMaxSize = sizes.textMaxSize.evaluate(feature, {});\n if (textMaxSize === undefined) {\n textMaxSize = layoutTextSize;\n }\n const layout = bucket.layers[0].layout;\n const iconOffset = layout.get('icon-offset').evaluate(feature, {}, canonical);\n const defaultHorizontalShaping = getDefaultHorizontalShaping(shapedTextOrientations.horizontal);\n const glyphSize = 24,\n fontScale = layoutTextSize / glyphSize,\n textBoxScale = bucket.tilePixelRatio * fontScale,\n textMaxBoxScale = bucket.tilePixelRatio * textMaxSize / glyphSize,\n iconBoxScale = bucket.tilePixelRatio * layoutIconSize,\n symbolMinDistance = bucket.tilePixelRatio * layout.get('symbol-spacing'),\n textPadding = layout.get('text-padding') * bucket.tilePixelRatio,\n iconPadding = getIconPadding(layout, feature, canonical, bucket.tilePixelRatio),\n textMaxAngle = layout.get('text-max-angle') / 180 * Math.PI,\n textAlongLine = layout.get('text-rotation-alignment') !== 'viewport' && layout.get('symbol-placement') !== 'point',\n iconAlongLine = layout.get('icon-rotation-alignment') === 'map' && layout.get('symbol-placement') !== 'point',\n symbolPlacement = layout.get('symbol-placement'),\n textRepeatDistance = symbolMinDistance / 2;\n\n const iconTextFit = layout.get('icon-text-fit');\n let verticallyShapedIcon;\n // Adjust shaped icon size when icon-text-fit is used.\n if (shapedIcon && iconTextFit !== 'none') {\n if (bucket.allowVerticalPlacement && shapedTextOrientations.vertical) {\n verticallyShapedIcon = fitIconToText(shapedIcon, shapedTextOrientations.vertical, iconTextFit,\n layout.get('icon-text-fit-padding'), iconOffset, fontScale);\n }\n if (defaultHorizontalShaping) {\n shapedIcon = fitIconToText(shapedIcon, defaultHorizontalShaping, iconTextFit,\n layout.get('icon-text-fit-padding'), iconOffset, fontScale);\n }\n }\n\n const granularity = (canonical) ? subdivisionGranularity.line.getGranularityForZoomLevel(canonical.z) : 1;\n\n const addSymbolAtAnchor = (line, anchor) => {\n if (anchor.x < 0 || anchor.x >= EXTENT || anchor.y < 0 || anchor.y >= EXTENT) {\n // Symbol layers are drawn across tile boundaries, We filter out symbols\n // outside our tile boundaries (which may be included in vector tile buffers)\n // to prevent double-drawing symbols.\n return;\n }\n addSymbol(bucket, anchor, line, shapedTextOrientations, shapedIcon, imageMap, verticallyShapedIcon, bucket.layers[0],\n bucket.collisionBoxArray, feature.index, feature.sourceLayerIndex, bucket.index,\n textBoxScale, [textPadding, textPadding, textPadding, textPadding], textAlongLine, textOffset,\n iconBoxScale, iconPadding, iconAlongLine, iconOffset,\n feature, sizes, isSDFIcon, canonical, layoutTextSize);\n };\n\n if (symbolPlacement === 'line') {\n for (const line of clipLine(feature.geometry, 0, 0, EXTENT, EXTENT)) {\n const subdividedLine = subdivideVertexLine(line, granularity);\n const anchors = getAnchors(\n subdividedLine,\n symbolMinDistance,\n textMaxAngle,\n shapedTextOrientations.vertical || defaultHorizontalShaping,\n shapedIcon,\n glyphSize,\n textMaxBoxScale,\n bucket.overscaling,\n EXTENT\n );\n for (const anchor of anchors) {\n const shapedText = defaultHorizontalShaping;\n if (!shapedText || !anchorIsTooClose(bucket, shapedText.text, textRepeatDistance, anchor)) {\n addSymbolAtAnchor(subdividedLine, anchor);\n }\n }\n }\n } else if (symbolPlacement === 'line-center') {\n // No clipping, multiple lines per feature are allowed\n // \"lines\" with only one point are ignored as in clipLines\n for (const line of feature.geometry) {\n if (line.length > 1) {\n const subdividedLine = subdivideVertexLine(line, granularity);\n const anchor = getCenterAnchor(\n subdividedLine,\n textMaxAngle,\n shapedTextOrientations.vertical || defaultHorizontalShaping,\n shapedIcon,\n glyphSize,\n textMaxBoxScale);\n if (anchor) {\n addSymbolAtAnchor(subdividedLine, anchor);\n }\n }\n }\n } else if (feature.type === 'Polygon') {\n for (const polygon of classifyRings(feature.geometry, 0)) {\n // 16 here represents 2 pixels\n const poi = findPoleOfInaccessibility(polygon, 16);\n const subdividedLine = subdivideVertexLine(polygon[0], granularity, true);\n addSymbolAtAnchor(subdividedLine, new Anchor(poi.x, poi.y, 0));\n }\n } else if (feature.type === 'LineString') {\n // https://github.com/mapbox/mapbox-gl-js/issues/3808\n for (const line of feature.geometry) {\n const subdividedLine = subdivideVertexLine(line, granularity);\n addSymbolAtAnchor(subdividedLine, new Anchor(subdividedLine[0].x, subdividedLine[0].y, 0));\n }\n } else if (feature.type === 'Point') {\n for (const points of feature.geometry) {\n for (const point of points) {\n addSymbolAtAnchor([point], new Anchor(point.x, point.y, 0));\n }\n }\n }\n}\n\nfunction addTextVariableAnchorOffsets(textAnchorOffsets: TextAnchorOffsetArray, variableAnchorOffset: VariableAnchorOffsetCollection): [number, number] {\n const startIndex = textAnchorOffsets.length;\n const values = variableAnchorOffset?.values;\n\n if (values?.length > 0) {\n for (let i = 0; i < values.length; i += 2) {\n const anchor = TextAnchorEnum[values[i] as TextAnchor];\n const offset = values[i + 1] as [number, number];\n\n textAnchorOffsets.emplaceBack(anchor, offset[0], offset[1]);\n }\n }\n\n return [startIndex, textAnchorOffsets.length];\n}\n\nfunction addTextVertices(bucket: SymbolBucket,\n anchor: Point,\n shapedText: Shaping,\n imageMap: {[_: string]: StyleImage},\n layer: SymbolStyleLayer,\n textAlongLine: boolean,\n feature: SymbolFeature,\n textOffset: [number, number],\n lineArray: {\n lineStartIndex: number;\n lineLength: number;\n },\n writingMode: WritingMode,\n placementTypes: Array<'vertical' | 'center' | 'left' | 'right'>,\n placedTextSymbolIndices: {[_: string]: number},\n placedIconIndex: number,\n sizes: Sizes,\n canonical: CanonicalTileID) {\n const glyphQuads = getGlyphQuads(anchor, shapedText, textOffset,\n layer, textAlongLine, feature, imageMap, bucket.allowVerticalPlacement);\n\n const sizeData = bucket.textSizeData;\n let textSizeData = null;\n\n if (sizeData.kind === 'source') {\n textSizeData = [\n SIZE_PACK_FACTOR * layer.layout.get('text-size').evaluate(feature, {})\n ];\n if (textSizeData[0] > MAX_PACKED_SIZE) {\n warnOnce(`${bucket.layerIds[0]}: Value for \"text-size\" is >= ${MAX_GLYPH_ICON_SIZE}. Reduce your \"text-size\".`);\n }\n } else if (sizeData.kind === 'composite') {\n textSizeData = [\n SIZE_PACK_FACTOR * sizes.compositeTextSizes[0].evaluate(feature, {}, canonical),\n SIZE_PACK_FACTOR * sizes.compositeTextSizes[1].evaluate(feature, {}, canonical)\n ];\n if (textSizeData[0] > MAX_PACKED_SIZE || textSizeData[1] > MAX_PACKED_SIZE) {\n warnOnce(`${bucket.layerIds[0]}: Value for \"text-size\" is >= ${MAX_GLYPH_ICON_SIZE}. Reduce your \"text-size\".`);\n }\n }\n\n bucket.addSymbols(\n bucket.text,\n glyphQuads,\n textSizeData,\n textOffset,\n textAlongLine,\n feature,\n writingMode,\n anchor,\n lineArray.lineStartIndex,\n lineArray.lineLength,\n placedIconIndex,\n canonical);\n\n // The placedSymbolArray is used at render time in drawTileSymbols\n // These indices allow access to the array at collision detection time\n for (const placementType of placementTypes) {\n placedTextSymbolIndices[placementType] = bucket.text.placedSymbolArray.length - 1;\n }\n\n return glyphQuads.length * 4;\n}\n\nfunction getDefaultHorizontalShaping(\n horizontalShaping: Record\n): Shaping | null {\n // We don't care which shaping we get because this is used for collision purposes\n // and all the justifications have the same collision box\n for (const justification in horizontalShaping) {\n return horizontalShaping[justification];\n }\n return null;\n}\n\n/**\n * Add a single label & icon placement.\n */\nfunction addSymbol(bucket: SymbolBucket,\n anchor: Anchor,\n line: Array,\n shapedTextOrientations: ShapedTextOrientations,\n shapedIcon: PositionedIcon | void,\n imageMap: {[_: string]: StyleImage},\n verticallyShapedIcon: PositionedIcon | void,\n layer: SymbolStyleLayer,\n collisionBoxArray: CollisionBoxArray,\n featureIndex: number,\n sourceLayerIndex: number,\n bucketIndex: number,\n textBoxScale: number,\n textPadding: SymbolPadding,\n textAlongLine: boolean,\n textOffset: [number, number],\n iconBoxScale: number,\n iconPadding: SymbolPadding,\n iconAlongLine: boolean,\n iconOffset: [number, number],\n feature: SymbolFeature,\n sizes: Sizes,\n isSDFIcon: boolean,\n canonical: CanonicalTileID,\n layoutTextSize: number) {\n\n const lineArray = bucket.addToLineVertexArray(anchor, line);\n\n let textCollisionFeature, iconCollisionFeature, verticalTextCollisionFeature, verticalIconCollisionFeature;\n\n let numIconVertices = 0;\n let numVerticalIconVertices = 0;\n let numHorizontalGlyphVertices = 0;\n let numVerticalGlyphVertices = 0;\n let placedIconSymbolIndex = -1;\n let verticalPlacedIconSymbolIndex = -1;\n const placedTextSymbolIndices: {[k: string]: number} = {};\n let key = murmur3('');\n\n if (bucket.allowVerticalPlacement && shapedTextOrientations.vertical) {\n const textRotation = layer.layout.get('text-rotate').evaluate(feature, {}, canonical);\n const verticalTextRotation = textRotation + 90.0;\n const verticalShaping = shapedTextOrientations.vertical;\n verticalTextCollisionFeature = new CollisionFeature(collisionBoxArray, anchor, featureIndex, sourceLayerIndex, bucketIndex, verticalShaping, textBoxScale, textPadding, textAlongLine, verticalTextRotation);\n\n if (verticallyShapedIcon) {\n verticalIconCollisionFeature = new CollisionFeature(collisionBoxArray, anchor, featureIndex, sourceLayerIndex, bucketIndex, verticallyShapedIcon, iconBoxScale, iconPadding, textAlongLine, verticalTextRotation);\n }\n }\n\n //Place icon first, so text can have a reference to its index in the placed symbol array.\n //Text symbols can lazily shift at render-time because of variable anchor placement.\n //If the style specifies an `icon-text-fit` then the icon would have to shift along with it.\n // For more info check `updateVariableAnchors` in `draw_symbol.js` .\n if (shapedIcon) {\n const iconRotate = layer.layout.get('icon-rotate').evaluate(feature, {});\n const hasIconTextFit = layer.layout.get('icon-text-fit') !== 'none';\n const iconQuads = getIconQuads(shapedIcon, iconRotate, isSDFIcon, hasIconTextFit);\n const verticalIconQuads = verticallyShapedIcon ? getIconQuads(verticallyShapedIcon, iconRotate, isSDFIcon, hasIconTextFit) : undefined;\n iconCollisionFeature = new CollisionFeature(collisionBoxArray, anchor, featureIndex, sourceLayerIndex, bucketIndex, shapedIcon, iconBoxScale, iconPadding, /*align boxes to line*/false, iconRotate);\n\n numIconVertices = iconQuads.length * 4;\n\n const sizeData = bucket.iconSizeData;\n let iconSizeData = null;\n\n if (sizeData.kind === 'source') {\n iconSizeData = [\n SIZE_PACK_FACTOR * layer.layout.get('icon-size').evaluate(feature, {})\n ];\n if (iconSizeData[0] > MAX_PACKED_SIZE) {\n warnOnce(`${bucket.layerIds[0]}: Value for \"icon-size\" is >= ${MAX_GLYPH_ICON_SIZE}. Reduce your \"icon-size\".`);\n }\n } else if (sizeData.kind === 'composite') {\n iconSizeData = [\n SIZE_PACK_FACTOR * sizes.compositeIconSizes[0].evaluate(feature, {}, canonical),\n SIZE_PACK_FACTOR * sizes.compositeIconSizes[1].evaluate(feature, {}, canonical)\n ];\n if (iconSizeData[0] > MAX_PACKED_SIZE || iconSizeData[1] > MAX_PACKED_SIZE) {\n warnOnce(`${bucket.layerIds[0]}: Value for \"icon-size\" is >= ${MAX_GLYPH_ICON_SIZE}. Reduce your \"icon-size\".`);\n }\n }\n\n bucket.addSymbols(\n bucket.icon,\n iconQuads,\n iconSizeData,\n iconOffset,\n iconAlongLine,\n feature,\n WritingMode.none,\n anchor,\n lineArray.lineStartIndex,\n lineArray.lineLength,\n // The icon itself does not have an associated symbol since the text isn't placed yet\n -1, canonical);\n\n placedIconSymbolIndex = bucket.icon.placedSymbolArray.length - 1;\n\n if (verticalIconQuads) {\n numVerticalIconVertices = verticalIconQuads.length * 4;\n\n bucket.addSymbols(\n bucket.icon,\n verticalIconQuads,\n iconSizeData,\n iconOffset,\n iconAlongLine,\n feature,\n WritingMode.vertical,\n anchor,\n lineArray.lineStartIndex,\n lineArray.lineLength,\n // The icon itself does not have an associated symbol since the text isn't placed yet\n -1, canonical);\n\n verticalPlacedIconSymbolIndex = bucket.icon.placedSymbolArray.length - 1;\n }\n }\n\n const justifications = Object.keys(shapedTextOrientations.horizontal) as TextJustify[];\n for (const justification of justifications) {\n const shaping = shapedTextOrientations.horizontal[justification];\n\n if (!textCollisionFeature) {\n key = murmur3(shaping.text);\n const textRotate = layer.layout.get('text-rotate').evaluate(feature, {}, canonical);\n // As a collision approximation, we can use either the vertical or any of the horizontal versions of the feature\n // We're counting on all versions having similar dimensions\n textCollisionFeature = new CollisionFeature(collisionBoxArray, anchor, featureIndex, sourceLayerIndex, bucketIndex, shaping, textBoxScale, textPadding, textAlongLine, textRotate);\n }\n\n const singleLine = shaping.positionedLines.length === 1;\n numHorizontalGlyphVertices += addTextVertices(\n bucket, anchor, shaping, imageMap, layer, textAlongLine, feature, textOffset, lineArray,\n shapedTextOrientations.vertical ? WritingMode.horizontal : WritingMode.horizontalOnly,\n singleLine ? justifications : [justification],\n placedTextSymbolIndices, placedIconSymbolIndex, sizes, canonical);\n\n if (singleLine) {\n break;\n }\n }\n\n if (shapedTextOrientations.vertical) {\n numVerticalGlyphVertices += addTextVertices(\n bucket, anchor, shapedTextOrientations.vertical, imageMap, layer, textAlongLine, feature,\n textOffset, lineArray, WritingMode.vertical, ['vertical'], placedTextSymbolIndices, verticalPlacedIconSymbolIndex, sizes, canonical);\n }\n\n const textBoxStartIndex = textCollisionFeature ? textCollisionFeature.boxStartIndex : bucket.collisionBoxArray.length;\n const textBoxEndIndex = textCollisionFeature ? textCollisionFeature.boxEndIndex : bucket.collisionBoxArray.length;\n\n const verticalTextBoxStartIndex = verticalTextCollisionFeature ? verticalTextCollisionFeature.boxStartIndex : bucket.collisionBoxArray.length;\n const verticalTextBoxEndIndex = verticalTextCollisionFeature ? verticalTextCollisionFeature.boxEndIndex : bucket.collisionBoxArray.length;\n\n const iconBoxStartIndex = iconCollisionFeature ? iconCollisionFeature.boxStartIndex : bucket.collisionBoxArray.length;\n const iconBoxEndIndex = iconCollisionFeature ? iconCollisionFeature.boxEndIndex : bucket.collisionBoxArray.length;\n\n const verticalIconBoxStartIndex = verticalIconCollisionFeature ? verticalIconCollisionFeature.boxStartIndex : bucket.collisionBoxArray.length;\n const verticalIconBoxEndIndex = verticalIconCollisionFeature ? verticalIconCollisionFeature.boxEndIndex : bucket.collisionBoxArray.length;\n\n // Check if runtime collision circles should be used for any of the collision features.\n // It is enough to choose the tallest feature shape as circles are always placed on a line.\n // All measurements are in glyph metrics and later converted into pixels using proper font size \"layoutTextSize\"\n let collisionCircleDiameter = -1;\n\n const getCollisionCircleHeight = (feature: CollisionFeature, prevHeight: number): number => {\n if (feature && feature.circleDiameter)\n return Math.max(feature.circleDiameter, prevHeight);\n return prevHeight;\n };\n\n collisionCircleDiameter = getCollisionCircleHeight(textCollisionFeature, collisionCircleDiameter);\n collisionCircleDiameter = getCollisionCircleHeight(verticalTextCollisionFeature, collisionCircleDiameter);\n collisionCircleDiameter = getCollisionCircleHeight(iconCollisionFeature, collisionCircleDiameter);\n collisionCircleDiameter = getCollisionCircleHeight(verticalIconCollisionFeature, collisionCircleDiameter);\n const useRuntimeCollisionCircles = (collisionCircleDiameter > -1) ? 1 : 0;\n\n // Convert circle collision height into pixels\n if (useRuntimeCollisionCircles)\n collisionCircleDiameter *= layoutTextSize / ONE_EM;\n\n if (bucket.glyphOffsetArray.length >= SymbolBucket.MAX_GLYPHS) warnOnce(\n 'Too many glyphs being rendered in a tile. See https://github.com/mapbox/mapbox-gl-js/issues/2907'\n );\n\n if (feature.sortKey !== undefined) {\n bucket.addToSortKeyRanges(bucket.symbolInstances.length, feature.sortKey as number);\n }\n\n const variableAnchorOffset = getTextVariableAnchorOffset(layer, feature, canonical);\n const [textAnchorOffsetStartIndex, textAnchorOffsetEndIndex] = addTextVariableAnchorOffsets(bucket.textAnchorOffsets, variableAnchorOffset);\n\n bucket.symbolInstances.emplaceBack(\n anchor.x,\n anchor.y,\n placedTextSymbolIndices.right >= 0 ? placedTextSymbolIndices.right : -1,\n placedTextSymbolIndices.center >= 0 ? placedTextSymbolIndices.center : -1,\n placedTextSymbolIndices.left >= 0 ? placedTextSymbolIndices.left : -1,\n placedTextSymbolIndices.vertical || -1,\n placedIconSymbolIndex,\n verticalPlacedIconSymbolIndex,\n key,\n textBoxStartIndex,\n textBoxEndIndex,\n verticalTextBoxStartIndex,\n verticalTextBoxEndIndex,\n iconBoxStartIndex,\n iconBoxEndIndex,\n verticalIconBoxStartIndex,\n verticalIconBoxEndIndex,\n featureIndex,\n numHorizontalGlyphVertices,\n numVerticalGlyphVertices,\n numIconVertices,\n numVerticalIconVertices,\n useRuntimeCollisionCircles,\n 0,\n textBoxScale,\n collisionCircleDiameter,\n textAnchorOffsetStartIndex,\n textAnchorOffsetEndIndex);\n}\n\nfunction anchorIsTooClose(bucket: SymbolBucket, text: string, repeatDistance: number, anchor: Point) {\n const compareText = bucket.compareText;\n if (!(text in compareText)) {\n compareText[text] = [];\n } else {\n const otherAnchors = compareText[text];\n for (let k = otherAnchors.length - 1; k >= 0; k--) {\n if (anchor.dist(otherAnchors[k]) < repeatDistance) {\n // If it's within repeatDistance of one anchor, stop looking\n return true;\n }\n }\n }\n // If anchor is not within repeatDistance of any other anchor, add to array\n compareText[text].push(anchor);\n return false;\n}\n","\nconst ARRAY_TYPES = [\n Int8Array, Uint8Array, Uint8ClampedArray, Int16Array, Uint16Array,\n Int32Array, Uint32Array, Float32Array, Float64Array\n];\n\n/** @typedef {Int8ArrayConstructor | Uint8ArrayConstructor | Uint8ClampedArrayConstructor | Int16ArrayConstructor | Uint16ArrayConstructor | Int32ArrayConstructor | Uint32ArrayConstructor | Float32ArrayConstructor | Float64ArrayConstructor} TypedArrayConstructor */\n\nconst VERSION = 1; // serialized format version\nconst HEADER_SIZE = 8;\n\nexport default class KDBush {\n\n /**\n * Creates an index from raw `ArrayBuffer` data.\n * @param {ArrayBuffer} data\n */\n static from(data) {\n if (!(data instanceof ArrayBuffer)) {\n throw new Error('Data must be an instance of ArrayBuffer.');\n }\n const [magic, versionAndType] = new Uint8Array(data, 0, 2);\n if (magic !== 0xdb) {\n throw new Error('Data does not appear to be in a KDBush format.');\n }\n const version = versionAndType >> 4;\n if (version !== VERSION) {\n throw new Error(`Got v${version} data when expected v${VERSION}.`);\n }\n const ArrayType = ARRAY_TYPES[versionAndType & 0x0f];\n if (!ArrayType) {\n throw new Error('Unrecognized array type.');\n }\n const [nodeSize] = new Uint16Array(data, 2, 1);\n const [numItems] = new Uint32Array(data, 4, 1);\n\n return new KDBush(numItems, nodeSize, ArrayType, data);\n }\n\n /**\n * Creates an index that will hold a given number of items.\n * @param {number} numItems\n * @param {number} [nodeSize=64] Size of the KD-tree node (64 by default).\n * @param {TypedArrayConstructor} [ArrayType=Float64Array] The array type used for coordinates storage (`Float64Array` by default).\n * @param {ArrayBuffer} [data] (For internal use only)\n */\n constructor(numItems, nodeSize = 64, ArrayType = Float64Array, data) {\n if (isNaN(numItems) || numItems < 0) throw new Error(`Unpexpected numItems value: ${numItems}.`);\n\n this.numItems = +numItems;\n this.nodeSize = Math.min(Math.max(+nodeSize, 2), 65535);\n this.ArrayType = ArrayType;\n this.IndexArrayType = numItems < 65536 ? Uint16Array : Uint32Array;\n\n const arrayTypeIndex = ARRAY_TYPES.indexOf(this.ArrayType);\n const coordsByteSize = numItems * 2 * this.ArrayType.BYTES_PER_ELEMENT;\n const idsByteSize = numItems * this.IndexArrayType.BYTES_PER_ELEMENT;\n const padCoords = (8 - idsByteSize % 8) % 8;\n\n if (arrayTypeIndex < 0) {\n throw new Error(`Unexpected typed array class: ${ArrayType}.`);\n }\n\n if (data && (data instanceof ArrayBuffer)) { // reconstruct an index from a buffer\n this.data = data;\n this.ids = new this.IndexArrayType(this.data, HEADER_SIZE, numItems);\n this.coords = new this.ArrayType(this.data, HEADER_SIZE + idsByteSize + padCoords, numItems * 2);\n this._pos = numItems * 2;\n this._finished = true;\n } else { // initialize a new index\n this.data = new ArrayBuffer(HEADER_SIZE + coordsByteSize + idsByteSize + padCoords);\n this.ids = new this.IndexArrayType(this.data, HEADER_SIZE, numItems);\n this.coords = new this.ArrayType(this.data, HEADER_SIZE + idsByteSize + padCoords, numItems * 2);\n this._pos = 0;\n this._finished = false;\n\n // set header\n new Uint8Array(this.data, 0, 2).set([0xdb, (VERSION << 4) + arrayTypeIndex]);\n new Uint16Array(this.data, 2, 1)[0] = nodeSize;\n new Uint32Array(this.data, 4, 1)[0] = numItems;\n }\n }\n\n /**\n * Add a point to the index.\n * @param {number} x\n * @param {number} y\n * @returns {number} An incremental index associated with the added item (starting from `0`).\n */\n add(x, y) {\n const index = this._pos >> 1;\n this.ids[index] = index;\n this.coords[this._pos++] = x;\n this.coords[this._pos++] = y;\n return index;\n }\n\n /**\n * Perform indexing of the added points.\n */\n finish() {\n const numAdded = this._pos >> 1;\n if (numAdded !== this.numItems) {\n throw new Error(`Added ${numAdded} items when expected ${this.numItems}.`);\n }\n // kd-sort both arrays for efficient search\n sort(this.ids, this.coords, this.nodeSize, 0, this.numItems - 1, 0);\n\n this._finished = true;\n return this;\n }\n\n /**\n * Search the index for items within a given bounding box.\n * @param {number} minX\n * @param {number} minY\n * @param {number} maxX\n * @param {number} maxY\n * @returns {number[]} An array of indices correponding to the found items.\n */\n range(minX, minY, maxX, maxY) {\n if (!this._finished) throw new Error('Data not yet indexed - call index.finish().');\n\n const {ids, coords, nodeSize} = this;\n const stack = [0, ids.length - 1, 0];\n const result = [];\n\n // recursively search for items in range in the kd-sorted arrays\n while (stack.length) {\n const axis = stack.pop() || 0;\n const right = stack.pop() || 0;\n const left = stack.pop() || 0;\n\n // if we reached \"tree node\", search linearly\n if (right - left <= nodeSize) {\n for (let i = left; i <= right; i++) {\n const x = coords[2 * i];\n const y = coords[2 * i + 1];\n if (x >= minX && x <= maxX && y >= minY && y <= maxY) result.push(ids[i]);\n }\n continue;\n }\n\n // otherwise find the middle index\n const m = (left + right) >> 1;\n\n // include the middle item if it's in range\n const x = coords[2 * m];\n const y = coords[2 * m + 1];\n if (x >= minX && x <= maxX && y >= minY && y <= maxY) result.push(ids[m]);\n\n // queue search in halves that intersect the query\n if (axis === 0 ? minX <= x : minY <= y) {\n stack.push(left);\n stack.push(m - 1);\n stack.push(1 - axis);\n }\n if (axis === 0 ? maxX >= x : maxY >= y) {\n stack.push(m + 1);\n stack.push(right);\n stack.push(1 - axis);\n }\n }\n\n return result;\n }\n\n /**\n * Search the index for items within a given radius.\n * @param {number} qx\n * @param {number} qy\n * @param {number} r Query radius.\n * @returns {number[]} An array of indices correponding to the found items.\n */\n within(qx, qy, r) {\n if (!this._finished) throw new Error('Data not yet indexed - call index.finish().');\n\n const {ids, coords, nodeSize} = this;\n const stack = [0, ids.length - 1, 0];\n const result = [];\n const r2 = r * r;\n\n // recursively search for items within radius in the kd-sorted arrays\n while (stack.length) {\n const axis = stack.pop() || 0;\n const right = stack.pop() || 0;\n const left = stack.pop() || 0;\n\n // if we reached \"tree node\", search linearly\n if (right - left <= nodeSize) {\n for (let i = left; i <= right; i++) {\n if (sqDist(coords[2 * i], coords[2 * i + 1], qx, qy) <= r2) result.push(ids[i]);\n }\n continue;\n }\n\n // otherwise find the middle index\n const m = (left + right) >> 1;\n\n // include the middle item if it's in range\n const x = coords[2 * m];\n const y = coords[2 * m + 1];\n if (sqDist(x, y, qx, qy) <= r2) result.push(ids[m]);\n\n // queue search in halves that intersect the query\n if (axis === 0 ? qx - r <= x : qy - r <= y) {\n stack.push(left);\n stack.push(m - 1);\n stack.push(1 - axis);\n }\n if (axis === 0 ? qx + r >= x : qy + r >= y) {\n stack.push(m + 1);\n stack.push(right);\n stack.push(1 - axis);\n }\n }\n\n return result;\n }\n}\n\n/**\n * @param {Uint16Array | Uint32Array} ids\n * @param {InstanceType} coords\n * @param {number} nodeSize\n * @param {number} left\n * @param {number} right\n * @param {number} axis\n */\nfunction sort(ids, coords, nodeSize, left, right, axis) {\n if (right - left <= nodeSize) return;\n\n const m = (left + right) >> 1; // middle index\n\n // sort ids and coords around the middle index so that the halves lie\n // either left/right or top/bottom correspondingly (taking turns)\n select(ids, coords, m, left, right, axis);\n\n // recursively kd-sort first half and second half on the opposite axis\n sort(ids, coords, nodeSize, left, m - 1, 1 - axis);\n sort(ids, coords, nodeSize, m + 1, right, 1 - axis);\n}\n\n/**\n * Custom Floyd-Rivest selection algorithm: sort ids and coords so that\n * [left..k-1] items are smaller than k-th item (on either x or y axis)\n * @param {Uint16Array | Uint32Array} ids\n * @param {InstanceType} coords\n * @param {number} k\n * @param {number} left\n * @param {number} right\n * @param {number} axis\n */\nfunction select(ids, coords, k, left, right, axis) {\n\n while (right > left) {\n if (right - left > 600) {\n const n = right - left + 1;\n const m = k - left + 1;\n const z = Math.log(n);\n const s = 0.5 * Math.exp(2 * z / 3);\n const sd = 0.5 * Math.sqrt(z * s * (n - s) / n) * (m - n / 2 < 0 ? -1 : 1);\n const newLeft = Math.max(left, Math.floor(k - m * s / n + sd));\n const newRight = Math.min(right, Math.floor(k + (n - m) * s / n + sd));\n select(ids, coords, k, newLeft, newRight, axis);\n }\n\n const t = coords[2 * k + axis];\n let i = left;\n let j = right;\n\n swapItem(ids, coords, left, k);\n if (coords[2 * right + axis] > t) swapItem(ids, coords, left, right);\n\n while (i < j) {\n swapItem(ids, coords, i, j);\n i++;\n j--;\n while (coords[2 * i + axis] < t) i++;\n while (coords[2 * j + axis] > t) j--;\n }\n\n if (coords[2 * left + axis] === t) swapItem(ids, coords, left, j);\n else {\n j++;\n swapItem(ids, coords, j, right);\n }\n\n if (j <= k) left = j + 1;\n if (k <= j) right = j - 1;\n }\n}\n\n/**\n * @param {Uint16Array | Uint32Array} ids\n * @param {InstanceType} coords\n * @param {number} i\n * @param {number} j\n */\nfunction swapItem(ids, coords, i, j) {\n swap(ids, i, j);\n swap(coords, 2 * i, 2 * j);\n swap(coords, 2 * i + 1, 2 * j + 1);\n}\n\n/**\n * @param {InstanceType} arr\n * @param {number} i\n * @param {number} j\n */\nfunction swap(arr, i, j) {\n const tmp = arr[i];\n arr[i] = arr[j];\n arr[j] = tmp;\n}\n\n/**\n * @param {number} ax\n * @param {number} ay\n * @param {number} bx\n * @param {number} by\n */\nfunction sqDist(ax, ay, bx, by) {\n const dx = ax - bx;\n const dy = ay - by;\n return dx * dx + dy * dy;\n}\n","import {AlphaImage} from '../util/image';\nimport {register} from '../util/web_worker_transfer';\nimport potpack from 'potpack';\n\nimport type {GlyphMetrics} from '../style/style_glyph';\nimport type {GetGlyphsResponse} from '../util/actor_messages';\n\nconst padding = 1;\n\n/**\n * A rectangle type with postion, width and height.\n */\nexport type Rect = {\n x: number;\n y: number;\n w: number;\n h: number;\n};\n\n/**\n * The glyph's position\n */\nexport type GlyphPosition = {\n rect: Rect;\n metrics: GlyphMetrics;\n};\n\n/**\n * The glyphs' positions\n */\nexport type GlyphPositions = {\n [_: string]: {\n [_: number]: GlyphPosition;\n };\n};\n\nexport class GlyphAtlas {\n image: AlphaImage;\n positions: GlyphPositions;\n\n constructor(stacks: GetGlyphsResponse) {\n const positions = {};\n const bins = [];\n\n for (const stack in stacks) {\n const glyphs = stacks[stack];\n const stackPositions = positions[stack] = {};\n\n for (const id in glyphs) {\n const src = glyphs[+id];\n if (!src || src.bitmap.width === 0 || src.bitmap.height === 0) continue;\n\n const bin = {\n x: 0,\n y: 0,\n w: src.bitmap.width + 2 * padding,\n h: src.bitmap.height + 2 * padding\n };\n bins.push(bin);\n stackPositions[id] = {rect: bin, metrics: src.metrics};\n }\n }\n\n const {w, h} = potpack(bins);\n const image = new AlphaImage({width: w || 1, height: h || 1});\n\n for (const stack in stacks) {\n const glyphs = stacks[stack];\n\n for (const id in glyphs) {\n const src = glyphs[+id];\n if (!src || src.bitmap.width === 0 || src.bitmap.height === 0) continue;\n const bin = positions[stack][id].rect;\n AlphaImage.copy(src.bitmap, image, {x: 0, y: 0}, {x: bin.x + padding, y: bin.y + padding}, src.bitmap);\n }\n }\n\n this.image = image;\n this.positions = positions;\n }\n}\n\nregister('GlyphAtlas', GlyphAtlas);\n","import {FeatureIndex} from '../data/feature_index';\nimport {performSymbolLayout} from '../symbol/symbol_layout';\nimport {CollisionBoxArray} from '../data/array_types.g';\nimport {DictionaryCoder} from '../util/dictionary_coder';\nimport {SymbolBucket} from '../data/bucket/symbol_bucket';\nimport {LineBucket} from '../data/bucket/line_bucket';\nimport {FillBucket} from '../data/bucket/fill_bucket';\nimport {FillExtrusionBucket} from '../data/bucket/fill_extrusion_bucket';\nimport {warnOnce, mapObject} from '../util/util';\nimport {ImageAtlas} from '../render/image_atlas';\nimport {GlyphAtlas} from '../render/glyph_atlas';\nimport {EvaluationParameters} from '../style/evaluation_parameters';\nimport {OverscaledTileID} from './tile_id';\n\nimport type {Bucket} from '../data/bucket';\nimport type {IActor} from '../util/actor';\nimport type {StyleLayer} from '../style/style_layer';\nimport type {StyleLayerIndex} from '../style/style_layer_index';\nimport type {\n WorkerTileParameters,\n WorkerTileResult,\n} from '../source/worker_source';\nimport type {PromoteIdSpecification} from '@maplibre/maplibre-gl-style-spec';\nimport type {VectorTile} from '@mapbox/vector-tile';\nimport {MessageType, type GetGlyphsResponse, type GetImagesResponse} from '../util/actor_messages';\nimport type {SubdivisionGranularitySetting} from '../render/subdivision_granularity_settings';\n\nexport class WorkerTile {\n tileID: OverscaledTileID;\n uid: string | number;\n zoom: number;\n pixelRatio: number;\n tileSize: number;\n source: string;\n promoteId: PromoteIdSpecification;\n overscaling: number;\n showCollisionBoxes: boolean;\n collectResourceTiming: boolean;\n returnDependencies: boolean;\n\n status: 'parsing' | 'done';\n data: VectorTile;\n collisionBoxArray: CollisionBoxArray;\n\n abort: AbortController;\n vectorTile: VectorTile;\n inFlightDependencies: AbortController[];\n\n constructor(params: WorkerTileParameters) {\n this.tileID = new OverscaledTileID(params.tileID.overscaledZ, params.tileID.wrap, params.tileID.canonical.z, params.tileID.canonical.x, params.tileID.canonical.y);\n this.uid = params.uid;\n this.zoom = params.zoom;\n this.pixelRatio = params.pixelRatio;\n this.tileSize = params.tileSize;\n this.source = params.source;\n this.overscaling = this.tileID.overscaleFactor();\n this.showCollisionBoxes = params.showCollisionBoxes;\n this.collectResourceTiming = !!params.collectResourceTiming;\n this.returnDependencies = !!params.returnDependencies;\n this.promoteId = params.promoteId;\n this.inFlightDependencies = [];\n }\n\n async parse(data: VectorTile, layerIndex: StyleLayerIndex, availableImages: Array, actor: IActor, subdivisionGranularity: SubdivisionGranularitySetting): Promise {\n this.status = 'parsing';\n this.data = data;\n\n this.collisionBoxArray = new CollisionBoxArray();\n const sourceLayerCoder = new DictionaryCoder(Object.keys(data.layers).sort());\n\n const featureIndex = new FeatureIndex(this.tileID, this.promoteId);\n featureIndex.bucketLayerIDs = [];\n\n const buckets: {[_: string]: Bucket} = {};\n\n const options = {\n featureIndex,\n iconDependencies: {},\n patternDependencies: {},\n glyphDependencies: {},\n availableImages,\n subdivisionGranularity\n };\n\n const layerFamilies = layerIndex.familiesBySource[this.source];\n for (const sourceLayerId in layerFamilies) {\n const sourceLayer = data.layers[sourceLayerId];\n if (!sourceLayer) {\n continue;\n }\n\n if (sourceLayer.version === 1) {\n warnOnce(`Vector tile source \"${this.source}\" layer \"${sourceLayerId}\" ` +\n 'does not use vector tile spec v2 and therefore may have some rendering errors.');\n }\n\n const sourceLayerIndex = sourceLayerCoder.encode(sourceLayerId);\n const features = [];\n for (let index = 0; index < sourceLayer.length; index++) {\n const feature = sourceLayer.feature(index);\n const id = featureIndex.getId(feature, sourceLayerId);\n features.push({feature, id, index, sourceLayerIndex});\n }\n\n for (const family of layerFamilies[sourceLayerId]) {\n const layer = family[0];\n\n if (layer.source !== this.source) {\n warnOnce(`layer.source = ${layer.source} does not equal this.source = ${this.source}`);\n }\n if (layer.minzoom && this.zoom < Math.floor(layer.minzoom)) continue;\n if (layer.maxzoom && this.zoom >= layer.maxzoom) continue;\n if (layer.visibility === 'none') continue;\n\n recalculateLayers(family, this.zoom, availableImages);\n\n const bucket: Bucket = buckets[layer.id] = layer.createBucket({\n index: featureIndex.bucketLayerIDs.length,\n layers: family,\n zoom: this.zoom,\n pixelRatio: this.pixelRatio,\n overscaling: this.overscaling,\n collisionBoxArray: this.collisionBoxArray,\n sourceLayerIndex,\n sourceID: this.source\n });\n\n bucket.populate(features, options, this.tileID.canonical);\n featureIndex.bucketLayerIDs.push(family.map((l) => l.id));\n }\n }\n\n // options.glyphDependencies looks like: {\"SomeFontName\":{\"10\":true,\"32\":true}}\n // this line makes an object like: {\"SomeFontName\":[10,32]}\n const stacks: {[_: string]: Array} = mapObject(options.glyphDependencies, (glyphs) => Object.keys(glyphs).map(Number));\n\n this.inFlightDependencies.forEach((request) => request?.abort());\n this.inFlightDependencies = [];\n\n let getGlyphsPromise = Promise.resolve({});\n if (Object.keys(stacks).length) {\n const abortController = new AbortController();\n this.inFlightDependencies.push(abortController);\n getGlyphsPromise = actor.sendAsync({type: MessageType.getGlyphs, data: {stacks, source: this.source, tileID: this.tileID, type: 'glyphs'}}, abortController);\n }\n\n const icons = Object.keys(options.iconDependencies);\n let getIconsPromise = Promise.resolve({});\n if (icons.length) {\n const abortController = new AbortController();\n this.inFlightDependencies.push(abortController);\n getIconsPromise = actor.sendAsync({type: MessageType.getImages, data: {icons, source: this.source, tileID: this.tileID, type: 'icons'}}, abortController);\n }\n\n const patterns = Object.keys(options.patternDependencies);\n let getPatternsPromise = Promise.resolve({});\n if (patterns.length) {\n const abortController = new AbortController();\n this.inFlightDependencies.push(abortController);\n getPatternsPromise = actor.sendAsync({type: MessageType.getImages, data: {icons: patterns, source: this.source, tileID: this.tileID, type: 'patterns'}}, abortController);\n }\n\n const [glyphMap, iconMap, patternMap] = await Promise.all([getGlyphsPromise, getIconsPromise, getPatternsPromise]);\n const glyphAtlas = new GlyphAtlas(glyphMap);\n const imageAtlas = new ImageAtlas(iconMap, patternMap);\n\n for (const key in buckets) {\n const bucket = buckets[key];\n if (bucket instanceof SymbolBucket) {\n recalculateLayers(bucket.layers, this.zoom, availableImages);\n performSymbolLayout({\n bucket,\n glyphMap,\n glyphPositions: glyphAtlas.positions,\n imageMap: iconMap,\n imagePositions: imageAtlas.iconPositions,\n showCollisionBoxes: this.showCollisionBoxes,\n canonical: this.tileID.canonical,\n subdivisionGranularity: options.subdivisionGranularity\n });\n } else if (bucket.hasPattern &&\n (bucket instanceof LineBucket ||\n bucket instanceof FillBucket ||\n bucket instanceof FillExtrusionBucket)) {\n recalculateLayers(bucket.layers, this.zoom, availableImages);\n bucket.addFeatures(options, this.tileID.canonical, imageAtlas.patternPositions);\n }\n }\n\n this.status = 'done';\n return {\n buckets: Object.values(buckets).filter(b => !b.isEmpty()),\n featureIndex,\n collisionBoxArray: this.collisionBoxArray,\n glyphAtlasImage: glyphAtlas.image,\n imageAtlas,\n // Only used for benchmarking:\n glyphMap: this.returnDependencies ? glyphMap : null,\n iconMap: this.returnDependencies ? iconMap : null,\n glyphPositions: this.returnDependencies ? glyphAtlas.positions : null\n };\n }\n}\n\nfunction recalculateLayers(layers: ReadonlyArray, zoom: number, availableImages: Array) {\n // Layers are shared and may have been used by a WorkerTile with a different zoom.\n const parameters = new EvaluationParameters(zoom);\n for (const layer of layers) {\n layer.recalculate(parameters, availableImages);\n }\n}\n","import type {RequestParameters} from '../util/ajax';\n\nexport type PerformanceMetrics = {\n loadTime: number;\n fullLoadTime: number;\n fps: number;\n percentDroppedFrames: number;\n totalFrames: number;\n};\n\nexport enum PerformanceMarkers {\n create = 'create',\n load = 'load',\n fullLoad = 'fullLoad'\n}\n\nlet lastFrameTime = null;\nlet frameTimes = [];\n\nconst minFramerateTarget = 60;\nconst frameTimeTarget = 1000 / minFramerateTarget;\n\nconst loadTimeKey = 'loadTime';\nconst fullLoadTimeKey = 'fullLoadTime';\n\nexport const PerformanceUtils = {\n mark(marker: PerformanceMarkers) {\n performance.mark(marker);\n },\n frame(timestamp: number) {\n const currTimestamp = timestamp;\n if (lastFrameTime != null) {\n const frameTime = currTimestamp - lastFrameTime;\n frameTimes.push(frameTime);\n }\n lastFrameTime = currTimestamp;\n },\n clearMetrics() {\n lastFrameTime = null;\n frameTimes = [];\n performance.clearMeasures(loadTimeKey);\n performance.clearMeasures(fullLoadTimeKey);\n\n for (const marker in PerformanceMarkers) {\n performance.clearMarks(PerformanceMarkers[marker]);\n }\n },\n\n getPerformanceMetrics(): PerformanceMetrics {\n performance.measure(loadTimeKey, PerformanceMarkers.create, PerformanceMarkers.load);\n performance.measure(fullLoadTimeKey, PerformanceMarkers.create, PerformanceMarkers.fullLoad);\n const loadTime = performance.getEntriesByName(loadTimeKey)[0].duration;\n const fullLoadTime = performance.getEntriesByName(fullLoadTimeKey)[0].duration;\n const totalFrames = frameTimes.length;\n\n const avgFrameTime = frameTimes.reduce((prev, curr) => prev + curr, 0) / totalFrames / 1000;\n const fps = 1 / avgFrameTime;\n\n // count frames that missed our framerate target\n const droppedFrames = frameTimes\n .filter((frameTime) => frameTime > frameTimeTarget)\n .reduce((acc, curr) => {\n return acc + (curr - frameTimeTarget) / frameTimeTarget;\n }, 0);\n const percentDroppedFrames = (droppedFrames / (totalFrames + droppedFrames)) * 100;\n\n return {\n loadTime,\n fullLoadTime,\n fps,\n percentDroppedFrames,\n totalFrames\n };\n }\n};\n\n/**\n * @internal\n * Safe wrapper for the performance resource timing API in web workers with graceful degradation\n */\nexport class RequestPerformance {\n _marks: {\n start: string;\n end: string;\n measure: string;\n };\n\n constructor (request: RequestParameters) {\n this._marks = {\n start: [request.url, 'start'].join('#'),\n end: [request.url, 'end'].join('#'),\n measure: request.url.toString()\n };\n\n performance.mark(this._marks.start);\n }\n\n finish() {\n performance.mark(this._marks.end);\n let resourceTimingData = performance.getEntriesByName(this._marks.measure);\n\n // fallback if web worker implementation of perf.getEntriesByName returns empty\n if (resourceTimingData.length === 0) {\n performance.measure(this._marks.measure, this._marks.start, this._marks.end);\n resourceTimingData = performance.getEntriesByName(this._marks.measure);\n\n // cleanup\n performance.clearMarks(this._marks.start);\n performance.clearMarks(this._marks.end);\n performance.clearMeasures(this._marks.measure);\n }\n\n return resourceTimingData;\n }\n}\n\nexport default performance;\n","import {type Subscription, isWorker, subscribe} from './util';\nimport {serialize, deserialize, type Serialized} from './web_worker_transfer';\nimport {ThrottledInvoker} from './throttled_invoker';\n\nimport {\n type MessageType,\n type ActorMessage,\n type RequestResponseMessageMap} from './actor_messages';\n\n/**\n * An interface to be sent to the actor in order for it to allow communication between the worker and the main thread\n */\nexport interface ActorTarget {\n addEventListener: typeof window.addEventListener;\n removeEventListener: typeof window.removeEventListener;\n postMessage: typeof window.postMessage;\n terminate?: () => void;\n}\n\n/**\n * This is used to define the parameters of the message that is sent to the worker and back\n */\ntype MessageData = {\n id: string;\n type: MessageType | '' | '';\n origin: string;\n data?: Serialized;\n targetMapId?: string | number | null;\n mustQueue?: boolean;\n error?: Serialized | null;\n sourceMapId: string | number | null;\n}\n\ntype ResolveReject = {\n resolve: (value?: RequestResponseMessageMap[MessageType][1]) => void;\n reject: (reason?: Error) => void;\n}\n\n/**\n * This interface allowing to substitute only the sendAsync method of the Actor class.\n */\nexport interface IActor {\n sendAsync(message: ActorMessage, abortController?: AbortController): Promise;\n}\n\nexport type MessageHandler = (mapId: string | number, params: RequestResponseMessageMap[T][0], abortController?: AbortController) => Promise\n\n/**\n * An implementation of the [Actor design pattern](https://en.wikipedia.org/wiki/Actor_model)\n * that maintains the relationship between asynchronous tasks and the objects\n * that spin them off - in this case, tasks like parsing parts of styles,\n * owned by the styles\n */\nexport class Actor implements IActor {\n target: ActorTarget;\n mapId: string | number | null;\n resolveRejects: { [x: string]: ResolveReject};\n name: string;\n tasks: { [x: string]: MessageData };\n taskQueue: Array;\n abortControllers: { [x: number | string]: AbortController };\n invoker: ThrottledInvoker;\n globalScope: ActorTarget;\n messageHandlers: { [x in MessageType]?: MessageHandler};\n subscription: Subscription;\n\n /**\n * @param target - The target\n * @param mapId - A unique identifier for the Map instance using this Actor.\n */\n constructor(target: ActorTarget, mapId?: string | number) {\n this.target = target;\n this.mapId = mapId;\n this.resolveRejects = {};\n this.tasks = {};\n this.taskQueue = [];\n this.abortControllers = {};\n this.messageHandlers = {};\n this.invoker = new ThrottledInvoker(() => this.process());\n this.subscription = subscribe(this.target, 'message', (message) => this.receive(message), false);\n this.globalScope = isWorker(self) ? target : window;\n }\n\n registerMessageHandler(type: T, handler: MessageHandler) {\n this.messageHandlers[type] = handler;\n }\n\n /**\n * Sends a message from a main-thread map to a Worker or from a Worker back to\n * a main-thread map instance.\n * @param message - the message to send\n * @param abortController - an optional AbortController to abort the request\n * @returns a promise that will be resolved with the response data\n */\n sendAsync(message: ActorMessage, abortController?: AbortController): Promise {\n return new Promise((resolve, reject) => {\n // We're using a string ID instead of numbers because they are being used as object keys\n // anyway, and thus stringified implicitly. We use random IDs because an actor may receive\n // message from multiple other actors which could run in different execution context. A\n // linearly increasing ID could produce collisions.\n const id = Math.round((Math.random() * 1e18)).toString(36).substring(0, 10);\n this.resolveRejects[id] = {\n resolve,\n reject\n };\n if (abortController) {\n abortController.signal.addEventListener('abort', () => {\n delete this.resolveRejects[id];\n const cancelMessage: MessageData = {\n id,\n type: '',\n origin: location.origin,\n targetMapId: message.targetMapId,\n sourceMapId: this.mapId\n };\n this.target.postMessage(cancelMessage);\n // In case of abort the current behavior is to keep the promise pending.\n }, {once: true});\n }\n const buffers: Array = [];\n const messageToPost: MessageData = {\n ...message,\n id,\n sourceMapId: this.mapId,\n origin: location.origin,\n data: serialize(message.data, buffers)\n };\n this.target.postMessage(messageToPost, {transfer: buffers});\n });\n }\n\n receive(message: {data: MessageData}) {\n const data = message.data;\n const id = data.id;\n if (data.origin !== 'file://' && location.origin !== 'file://' && data.origin !== 'resource://android' && location.origin !== 'resource://android' && data.origin !== location.origin) {\n return;\n }\n if (data.targetMapId && this.mapId !== data.targetMapId) {\n return;\n }\n if (data.type === '') {\n // Remove the original request from the queue. This is only possible if it\n // hasn't been kicked off yet. The id will remain in the queue, but because\n // there is no associated task, it will be dropped once it's time to execute it.\n delete this.tasks[id];\n const abortController = this.abortControllers[id];\n delete this.abortControllers[id];\n if (abortController) {\n abortController.abort();\n }\n return;\n }\n if (isWorker(self) || data.mustQueue) {\n // In workers, store the tasks that we need to process before actually processing them. This\n // is necessary because we want to keep receiving messages, and in particular,\n // messages. Some tasks may take a while in the worker thread, so before\n // executing the next task in our queue, postMessage preempts this and \n // messages can be processed. We're using a MessageChannel object to get throttle the\n // process() flow to one at a time.\n this.tasks[id] = data;\n this.taskQueue.push(id);\n this.invoker.trigger();\n return;\n }\n // In the main thread, process messages immediately so that other work does not slip in\n // between getting partial data back from workers.\n this.processTask(id, data);\n }\n\n process() {\n if (this.taskQueue.length === 0) {\n return;\n }\n const id = this.taskQueue.shift();\n const task = this.tasks[id];\n delete this.tasks[id];\n // Schedule another process call if we know there's more to process _before_ invoking the\n // current task. This is necessary so that processing continues even if the current task\n // doesn't execute successfully.\n if (this.taskQueue.length > 0) {\n this.invoker.trigger();\n }\n if (!task) {\n // If the task ID doesn't have associated task data anymore, it was canceled.\n return;\n }\n\n this.processTask(id, task);\n }\n\n async processTask(id: string, task: MessageData) {\n if (task.type === '') {\n // The `completeTask` function in the counterpart actor has been called, and we are now\n // resolving or rejecting the promise in the originating actor, if there is one.\n const resolveReject = this.resolveRejects[id];\n delete this.resolveRejects[id];\n if (!resolveReject) {\n // If we get a response, but don't have a resolve or reject, the request was canceled.\n return;\n }\n if (task.error) {\n resolveReject.reject(deserialize(task.error) as Error);\n } else {\n resolveReject.resolve(deserialize(task.data));\n }\n return;\n }\n if (!this.messageHandlers[task.type]) {\n this.completeTask(id, new Error(`Could not find a registered handler for ${task.type}, map ID: ${this.mapId}, available handlers: ${Object.keys(this.messageHandlers).join(', ')}`));\n return;\n }\n const params = deserialize(task.data) as RequestResponseMessageMap[MessageType][0];\n const abortController = new AbortController();\n this.abortControllers[id] = abortController;\n try {\n const data = await this.messageHandlers[task.type](task.sourceMapId, params, abortController);\n this.completeTask(id, null, data);\n } catch (err) {\n this.completeTask(id, err);\n }\n }\n\n completeTask(id: string, err: Error, data?: RequestResponseMessageMap[MessageType][1]) {\n const buffers: Array = [];\n delete this.abortControllers[id];\n const responseMessage: MessageData = {\n id,\n type: '',\n sourceMapId: this.mapId,\n origin: location.origin,\n error: err ? serialize(err) : null,\n data: serialize(data, buffers)\n };\n this.target.postMessage(responseMessage, {transfer: buffers});\n }\n\n remove() {\n this.invoker.remove();\n this.subscription.unsubscribe();\n }\n}\n","import {type StyleLayer} from './style_layer';\nimport {createStyleLayer} from './create_style_layer';\n\nimport {featureFilter, groupByLayout} from '@maplibre/maplibre-gl-style-spec';\n\nimport type {TypedStyleLayer} from './style_layer/typed_style_layer';\nimport type {LayerSpecification} from '@maplibre/maplibre-gl-style-spec';\n\nexport type LayerConfigs = {[_: string]: LayerSpecification};\nexport type Family = Array;\n\nexport class StyleLayerIndex {\n familiesBySource: {\n [source: string]: {\n [sourceLayer: string]: Array>;\n };\n };\n keyCache: {[source: string]: string};\n\n _layerConfigs: LayerConfigs;\n _layers: {[_: string]: StyleLayer};\n\n constructor(layerConfigs?: Array | null) {\n this.keyCache = {};\n if (layerConfigs) {\n this.replace(layerConfigs);\n }\n }\n\n replace(layerConfigs: Array) {\n this._layerConfigs = {};\n this._layers = {};\n this.update(layerConfigs, []);\n }\n\n update(layerConfigs: Array, removedIds: Array) {\n for (const layerConfig of layerConfigs) {\n this._layerConfigs[layerConfig.id] = layerConfig;\n\n const layer = this._layers[layerConfig.id] = createStyleLayer(layerConfig);\n layer._featureFilter = featureFilter(layer.filter);\n if (this.keyCache[layerConfig.id])\n delete this.keyCache[layerConfig.id];\n }\n for (const id of removedIds) {\n delete this.keyCache[id];\n delete this._layerConfigs[id];\n delete this._layers[id];\n }\n\n this.familiesBySource = {};\n\n const groups = groupByLayout(Object.values(this._layerConfigs), this.keyCache);\n\n for (const layerConfigs of groups) {\n const layers = layerConfigs.map((layerConfig) => this._layers[layerConfig.id]);\n\n const layer = layers[0];\n if (layer.visibility === 'none') {\n continue;\n }\n\n const sourceId = layer.source || '';\n let sourceGroup = this.familiesBySource[sourceId];\n if (!sourceGroup) {\n sourceGroup = this.familiesBySource[sourceId] = {};\n }\n\n const sourceLayerId = layer.sourceLayer || '_geojsonTileLayer';\n let sourceLayerFamilies = sourceGroup[sourceLayerId];\n if (!sourceLayerFamilies) {\n sourceLayerFamilies = sourceGroup[sourceLayerId] = [];\n }\n\n sourceLayerFamilies.push(layers);\n }\n }\n}\n","import {type ExpiryData, getArrayBuffer} from '../util/ajax';\n\nimport vt from '@mapbox/vector-tile';\nimport Protobuf from 'pbf';\nimport {WorkerTile} from './worker_tile';\nimport {extend} from '../util/util';\nimport {RequestPerformance} from '../util/performance';\n\nimport type {\n WorkerSource,\n WorkerTileParameters,\n TileParameters,\n WorkerTileResult\n} from '../source/worker_source';\n\nimport type {IActor} from '../util/actor';\nimport type {StyleLayerIndex} from '../style/style_layer_index';\nimport type {VectorTile} from '@mapbox/vector-tile';\n\nexport type LoadVectorTileResult = {\n vectorTile: VectorTile;\n rawData: ArrayBuffer;\n resourceTiming?: Array;\n} & ExpiryData;\n\ntype FetchingState = {\n rawTileData: ArrayBuffer;\n cacheControl: ExpiryData;\n resourceTiming: any;\n}\n\nexport type AbortVectorData = () => void;\nexport type LoadVectorData = (params: WorkerTileParameters, abortController: AbortController) => Promise;\n\n/**\n * The {@link WorkerSource} implementation that supports {@link VectorTileSource}.\n * This class is designed to be easily reused to support custom source types\n * for data formats that can be parsed/converted into an in-memory VectorTile\n * representation. To do so, override its `loadVectorTile` method.\n */\nexport class VectorTileWorkerSource implements WorkerSource {\n actor: IActor;\n layerIndex: StyleLayerIndex;\n availableImages: Array;\n fetching: {[_: string]: FetchingState };\n loading: {[_: string]: WorkerTile};\n loaded: {[_: string]: WorkerTile};\n\n /**\n * @param loadVectorData - Optional method for custom loading of a VectorTile\n * object based on parameters passed from the main-thread Source. See\n * {@link VectorTileWorkerSource#loadTile}. The default implementation simply\n * loads the pbf at `params.url`.\n */\n constructor(actor: IActor, layerIndex: StyleLayerIndex, availableImages: Array) {\n this.actor = actor;\n this.layerIndex = layerIndex;\n this.availableImages = availableImages;\n this.fetching = {};\n this.loading = {};\n this.loaded = {};\n }\n\n /**\n * Loads a vector tile\n */\n async loadVectorTile(params: WorkerTileParameters, abortController: AbortController): Promise {\n const response = await getArrayBuffer(params.request, abortController);\n try {\n const vectorTile = new vt.VectorTile(new Protobuf(response.data));\n return {\n vectorTile,\n rawData: response.data,\n cacheControl: response.cacheControl,\n expires: response.expires\n };\n } catch (ex) {\n const bytes = new Uint8Array(response.data);\n const isGzipped = bytes[0] === 0x1f && bytes[1] === 0x8b;\n let errorMessage = `Unable to parse the tile at ${params.request.url}, `;\n if (isGzipped) {\n errorMessage += 'please make sure the data is not gzipped and that you have configured the relevant header in the server';\n } else {\n errorMessage += `got error: ${ex.message}`;\n }\n throw new Error(errorMessage);\n }\n }\n\n /**\n * Implements {@link WorkerSource#loadTile}. Delegates to\n * {@link VectorTileWorkerSource#loadVectorData} (which by default expects\n * a `params.url` property) for fetching and producing a VectorTile object.\n */\n async loadTile(params: WorkerTileParameters): Promise {\n const tileUid = params.uid;\n\n const perf = (params && params.request && params.request.collectResourceTiming) ?\n new RequestPerformance(params.request) : false;\n\n const workerTile = new WorkerTile(params);\n this.loading[tileUid] = workerTile;\n\n const abortController = new AbortController();\n workerTile.abort = abortController;\n try {\n const response = await this.loadVectorTile(params, abortController);\n delete this.loading[tileUid];\n if (!response) {\n return null;\n }\n\n const rawTileData = response.rawData;\n const cacheControl = {} as ExpiryData;\n if (response.expires) cacheControl.expires = response.expires;\n if (response.cacheControl) cacheControl.cacheControl = response.cacheControl;\n\n const resourceTiming = {} as {resourceTiming: any};\n if (perf) {\n const resourceTimingData = perf.finish();\n // it's necessary to eval the result of getEntriesByName() here via parse/stringify\n // late evaluation in the main thread causes TypeError: illegal invocation\n if (resourceTimingData)\n resourceTiming.resourceTiming = JSON.parse(JSON.stringify(resourceTimingData));\n }\n\n workerTile.vectorTile = response.vectorTile;\n const parsePromise = workerTile.parse(response.vectorTile, this.layerIndex, this.availableImages, this.actor, params.subdivisionGranularity);\n this.loaded[tileUid] = workerTile;\n // keep the original fetching state so that reload tile can pick it up if the original parse is cancelled by reloads' parse\n this.fetching[tileUid] = {rawTileData, cacheControl, resourceTiming};\n\n try {\n const result = await parsePromise;\n // Transferring a copy of rawTileData because the worker needs to retain its copy.\n return extend({rawTileData: rawTileData.slice(0)}, result, cacheControl, resourceTiming);\n } finally {\n delete this.fetching[tileUid];\n }\n } catch (err) {\n delete this.loading[tileUid];\n workerTile.status = 'done';\n this.loaded[tileUid] = workerTile;\n throw err;\n }\n }\n\n /**\n * Implements {@link WorkerSource#reloadTile}.\n */\n async reloadTile(params: WorkerTileParameters): Promise {\n const uid = params.uid;\n if (!this.loaded || !this.loaded[uid]) {\n throw new Error('Should not be trying to reload a tile that was never loaded or has been removed');\n }\n const workerTile = this.loaded[uid];\n workerTile.showCollisionBoxes = params.showCollisionBoxes;\n if (workerTile.status === 'parsing') {\n const result = await workerTile.parse(workerTile.vectorTile, this.layerIndex, this.availableImages, this.actor, params.subdivisionGranularity);\n // if we have cancelled the original parse, make sure to pass the rawTileData from the original fetch\n let parseResult: WorkerTileResult;\n if (this.fetching[uid]) {\n const {rawTileData, cacheControl, resourceTiming} = this.fetching[uid];\n delete this.fetching[uid];\n parseResult = extend({rawTileData: rawTileData.slice(0)}, result, cacheControl, resourceTiming);\n } else {\n parseResult = result;\n }\n return parseResult;\n\n }\n // if there was no vector tile data on the initial load, don't try and re-parse tile\n if (workerTile.status === 'done' && workerTile.vectorTile) {\n // this seems like a missing case where cache control is lost? see #3309\n return workerTile.parse(workerTile.vectorTile, this.layerIndex, this.availableImages, this.actor, params.subdivisionGranularity);\n }\n }\n\n /**\n * Implements {@link WorkerSource#abortTile}.\n */\n async abortTile(params: TileParameters): Promise {\n const loading = this.loading;\n const uid = params.uid;\n if (loading && loading[uid] && loading[uid].abort) {\n loading[uid].abort.abort();\n delete loading[uid];\n }\n }\n\n /**\n * Implements {@link WorkerSource#removeTile}.\n */\n async removeTile(params: TileParameters): Promise {\n if (this.loaded && this.loaded[params.uid]) {\n delete this.loaded[params.uid];\n }\n }\n}\n","import {DEMData} from '../data/dem_data';\nimport {RGBAImage} from '../util/image';\nimport type {Actor} from '../util/actor';\nimport type {\n WorkerDEMTileParameters,\n TileParameters\n} from './worker_source';\nimport {getImageData, isImageBitmap} from '../util/util';\n\nexport class RasterDEMTileWorkerSource {\n actor: Actor;\n loaded: {[_: string]: DEMData};\n\n constructor() {\n this.loaded = {};\n }\n\n async loadTile(params: WorkerDEMTileParameters): Promise {\n const {uid, encoding, rawImageData, redFactor, greenFactor, blueFactor, baseShift} = params;\n const width = rawImageData.width + 2;\n const height = rawImageData.height + 2;\n const imagePixels: RGBAImage | ImageData = isImageBitmap(rawImageData) ?\n new RGBAImage({width, height}, await getImageData(rawImageData, -1, -1, width, height)) :\n rawImageData;\n const dem = new DEMData(uid, imagePixels, encoding, redFactor, greenFactor, blueFactor, baseShift);\n this.loaded = this.loaded || {};\n this.loaded[uid] = dem;\n return dem;\n }\n\n removeTile(params: TileParameters) {\n const loaded = this.loaded,\n uid = params.uid;\n if (loaded && loaded[uid]) {\n delete loaded[uid];\n }\n }\n}\n","\nmodule.exports = rewind;\n\nfunction rewind(gj, outer) {\n var type = gj && gj.type, i;\n\n if (type === 'FeatureCollection') {\n for (i = 0; i < gj.features.length; i++) rewind(gj.features[i], outer);\n\n } else if (type === 'GeometryCollection') {\n for (i = 0; i < gj.geometries.length; i++) rewind(gj.geometries[i], outer);\n\n } else if (type === 'Feature') {\n rewind(gj.geometry, outer);\n\n } else if (type === 'Polygon') {\n rewindRings(gj.coordinates, outer);\n\n } else if (type === 'MultiPolygon') {\n for (i = 0; i < gj.coordinates.length; i++) rewindRings(gj.coordinates[i], outer);\n }\n\n return gj;\n}\n\nfunction rewindRings(rings, outer) {\n if (rings.length === 0) return;\n\n rewindRing(rings[0], outer);\n for (var i = 1; i < rings.length; i++) {\n rewindRing(rings[i], !outer);\n }\n}\n\nfunction rewindRing(ring, dir) {\n var area = 0, err = 0;\n for (var i = 0, len = ring.length, j = len - 1; i < len; j = i++) {\n var k = (ring[i][0] - ring[j][0]) * (ring[j][1] + ring[i][1]);\n var m = area + k;\n err += Math.abs(area) >= Math.abs(k) ? area - m + k : k - m + area;\n area = m;\n }\n if (area + err >= 0 !== !!dir) ring.reverse();\n}\n","import Point from '@mapbox/point-geometry';\n\nimport mvt from '@mapbox/vector-tile';\nimport type {VectorTileFeature, VectorTileLayer, VectorTile} from '@mapbox/vector-tile';\nconst toGeoJSON = mvt.VectorTileFeature.prototype.toGeoJSON;\nimport {EXTENT} from '../data/extent';\nimport type {TileFeature, AnyProps} from 'supercluster';\nimport type {Feature as GeoJSONVTFeature} from 'geojson-vt';\n\nexport type Feature = TileFeature | GeoJSONVTFeature;\n\nclass FeatureWrapper implements VectorTileFeature {\n _feature: Feature;\n\n extent: number;\n type: Feature['type'];\n id: number;\n properties: {[_: string]: string | number | boolean};\n\n constructor(feature: Feature) {\n this._feature = feature;\n\n this.extent = EXTENT;\n this.type = feature.type;\n this.properties = feature.tags;\n\n // If the feature has a top-level `id` property, copy it over, but only\n // if it can be coerced to an integer, because this wrapper is used for\n // serializing geojson feature data into vector tile PBF data, and the\n // vector tile spec only supports integer values for feature ids --\n // allowing non-integer values here results in a non-compliant PBF\n // that causes an exception when it is parsed with vector-tile-js\n if ('id' in feature && !isNaN(feature.id as any)) {\n this.id = parseInt(feature.id, 10);\n }\n }\n\n loadGeometry() {\n if (this._feature.type === 1) {\n const geometry = [];\n for (const point of this._feature.geometry) {\n geometry.push([new Point(point[0], point[1])]);\n }\n return geometry;\n } else {\n const geometry = [];\n for (const ring of this._feature.geometry) {\n const newRing = [];\n for (const point of ring) {\n newRing.push(new Point(point[0], point[1]));\n }\n geometry.push(newRing);\n }\n return geometry;\n }\n }\n\n toGeoJSON(x: number, y: number, z: number) {\n return toGeoJSON.call(this, x, y, z);\n }\n}\n\nexport class GeoJSONWrapper implements VectorTile, VectorTileLayer {\n layers: {[_: string]: VectorTileLayer};\n name: string;\n extent: number;\n length: number;\n _features: Array;\n\n constructor(features: Array) {\n this.layers = {'_geojsonTileLayer': this};\n this.name = '_geojsonTileLayer';\n this.extent = EXTENT;\n this.length = features.length;\n this._features = features;\n }\n\n feature(i: number): VectorTileFeature {\n return new FeatureWrapper(this._features[i]);\n }\n}\n","var Pbf = require('pbf')\nvar GeoJSONWrapper = require('./lib/geojson_wrapper')\n\nmodule.exports = fromVectorTileJs\nmodule.exports.fromVectorTileJs = fromVectorTileJs\nmodule.exports.fromGeojsonVt = fromGeojsonVt\nmodule.exports.GeoJSONWrapper = GeoJSONWrapper\n\n/**\n * Serialize a vector-tile-js-created tile to pbf\n *\n * @param {Object} tile\n * @return {Buffer} uncompressed, pbf-serialized tile data\n */\nfunction fromVectorTileJs (tile) {\n var out = new Pbf()\n writeTile(tile, out)\n return out.finish()\n}\n\n/**\n * Serialized a geojson-vt-created tile to pbf.\n *\n * @param {Object} layers - An object mapping layer names to geojson-vt-created vector tile objects\n * @param {Object} [options] - An object specifying the vector-tile specification version and extent that were used to create `layers`.\n * @param {Number} [options.version=1] - Version of vector-tile spec used\n * @param {Number} [options.extent=4096] - Extent of the vector tile\n * @return {Buffer} uncompressed, pbf-serialized tile data\n */\nfunction fromGeojsonVt (layers, options) {\n options = options || {}\n var l = {}\n for (var k in layers) {\n l[k] = new GeoJSONWrapper(layers[k].features, options)\n l[k].name = k\n l[k].version = options.version\n l[k].extent = options.extent\n }\n return fromVectorTileJs({ layers: l })\n}\n\nfunction writeTile (tile, pbf) {\n for (var key in tile.layers) {\n pbf.writeMessage(3, writeLayer, tile.layers[key])\n }\n}\n\nfunction writeLayer (layer, pbf) {\n pbf.writeVarintField(15, layer.version || 1)\n pbf.writeStringField(1, layer.name || '')\n pbf.writeVarintField(5, layer.extent || 4096)\n\n var i\n var context = {\n keys: [],\n values: [],\n keycache: {},\n valuecache: {}\n }\n\n for (i = 0; i < layer.length; i++) {\n context.feature = layer.feature(i)\n pbf.writeMessage(2, writeFeature, context)\n }\n\n var keys = context.keys\n for (i = 0; i < keys.length; i++) {\n pbf.writeStringField(3, keys[i])\n }\n\n var values = context.values\n for (i = 0; i < values.length; i++) {\n pbf.writeMessage(4, writeValue, values[i])\n }\n}\n\nfunction writeFeature (context, pbf) {\n var feature = context.feature\n\n if (feature.id !== undefined) {\n pbf.writeVarintField(1, feature.id)\n }\n\n pbf.writeMessage(2, writeProperties, context)\n pbf.writeVarintField(3, feature.type)\n pbf.writeMessage(4, writeGeometry, feature)\n}\n\nfunction writeProperties (context, pbf) {\n var feature = context.feature\n var keys = context.keys\n var values = context.values\n var keycache = context.keycache\n var valuecache = context.valuecache\n\n for (var key in feature.properties) {\n var value = feature.properties[key]\n\n var keyIndex = keycache[key]\n if (value === null) continue // don't encode null value properties\n\n if (typeof keyIndex === 'undefined') {\n keys.push(key)\n keyIndex = keys.length - 1\n keycache[key] = keyIndex\n }\n pbf.writeVarint(keyIndex)\n\n var type = typeof value\n if (type !== 'string' && type !== 'boolean' && type !== 'number') {\n value = JSON.stringify(value)\n }\n var valueKey = type + ':' + value\n var valueIndex = valuecache[valueKey]\n if (typeof valueIndex === 'undefined') {\n values.push(value)\n valueIndex = values.length - 1\n valuecache[valueKey] = valueIndex\n }\n pbf.writeVarint(valueIndex)\n }\n}\n\nfunction command (cmd, length) {\n return (length << 3) + (cmd & 0x7)\n}\n\nfunction zigzag (num) {\n return (num << 1) ^ (num >> 31)\n}\n\nfunction writeGeometry (feature, pbf) {\n var geometry = feature.loadGeometry()\n var type = feature.type\n var x = 0\n var y = 0\n var rings = geometry.length\n for (var r = 0; r < rings; r++) {\n var ring = geometry[r]\n var count = 1\n if (type === 1) {\n count = ring.length\n }\n pbf.writeVarint(command(1, count)) // moveto\n // do not write polygon closing path as lineto\n var lineCount = type === 3 ? ring.length - 1 : ring.length\n for (var i = 0; i < lineCount; i++) {\n if (i === 1 && type !== 1) {\n pbf.writeVarint(command(2, lineCount - 1)) // lineto\n }\n var dx = ring[i].x - x\n var dy = ring[i].y - y\n pbf.writeVarint(zigzag(dx))\n pbf.writeVarint(zigzag(dy))\n x += dx\n y += dy\n }\n if (type === 3) {\n pbf.writeVarint(command(7, 1)) // closepath\n }\n }\n}\n\nfunction writeValue (value, pbf) {\n var type = typeof value\n if (type === 'string') {\n pbf.writeStringField(1, value)\n } else if (type === 'boolean') {\n pbf.writeBooleanField(7, value)\n } else if (type === 'number') {\n if (value % 1 !== 0) {\n pbf.writeDoubleField(3, value)\n } else if (value < 0) {\n pbf.writeSVarintField(6, value)\n } else {\n pbf.writeVarintField(5, value)\n }\n }\n}\n","'use strict'\n\nvar Point = require('@mapbox/point-geometry')\nvar VectorTileFeature = require('@mapbox/vector-tile').VectorTileFeature\n\nmodule.exports = GeoJSONWrapper\n\n// conform to vectortile api\nfunction GeoJSONWrapper (features, options) {\n this.options = options || {}\n this.features = features\n this.length = features.length\n}\n\nGeoJSONWrapper.prototype.feature = function (i) {\n return new FeatureWrapper(this.features[i], this.options.extent)\n}\n\nfunction FeatureWrapper (feature, extent) {\n this.id = typeof feature.id === 'number' ? feature.id : undefined\n this.type = feature.type\n this.rawGeometry = feature.type === 1 ? [feature.geometry] : feature.geometry\n this.properties = feature.tags\n this.extent = extent || 4096\n}\n\nFeatureWrapper.prototype.loadGeometry = function () {\n var rings = this.rawGeometry\n this.geometry = []\n\n for (var i = 0; i < rings.length; i++) {\n var ring = rings[i]\n var newRing = []\n for (var j = 0; j < ring.length; j++) {\n newRing.push(new Point(ring[j][0], ring[j][1]))\n }\n this.geometry.push(newRing)\n }\n return this.geometry\n}\n\nFeatureWrapper.prototype.bbox = function () {\n if (!this.geometry) this.loadGeometry()\n\n var rings = this.geometry\n var x1 = Infinity\n var x2 = -Infinity\n var y1 = Infinity\n var y2 = -Infinity\n\n for (var i = 0; i < rings.length; i++) {\n var ring = rings[i]\n\n for (var j = 0; j < ring.length; j++) {\n var coord = ring[j]\n\n x1 = Math.min(x1, coord.x)\n x2 = Math.max(x2, coord.x)\n y1 = Math.min(y1, coord.y)\n y2 = Math.max(y2, coord.y)\n }\n }\n\n return [x1, y1, x2, y2]\n}\n\nFeatureWrapper.prototype.toGeoJSON = VectorTileFeature.prototype.toGeoJSON\n","\nimport KDBush from 'kdbush';\n\nconst defaultOptions = {\n minZoom: 0, // min zoom to generate clusters on\n maxZoom: 16, // max zoom level to cluster the points on\n minPoints: 2, // minimum points to form a cluster\n radius: 40, // cluster radius in pixels\n extent: 512, // tile extent (radius is calculated relative to it)\n nodeSize: 64, // size of the KD-tree leaf node, affects performance\n log: false, // whether to log timing info\n\n // whether to generate numeric ids for input features (in vector tiles)\n generateId: false,\n\n // a reduce function for calculating custom cluster properties\n reduce: null, // (accumulated, props) => { accumulated.sum += props.sum; }\n\n // properties to use for individual points when running the reducer\n map: props => props // props => ({sum: props.my_value})\n};\n\nconst fround = Math.fround || (tmp => ((x) => { tmp[0] = +x; return tmp[0]; }))(new Float32Array(1));\n\nconst OFFSET_ZOOM = 2;\nconst OFFSET_ID = 3;\nconst OFFSET_PARENT = 4;\nconst OFFSET_NUM = 5;\nconst OFFSET_PROP = 6;\n\nexport default class Supercluster {\n constructor(options) {\n this.options = Object.assign(Object.create(defaultOptions), options);\n this.trees = new Array(this.options.maxZoom + 1);\n this.stride = this.options.reduce ? 7 : 6;\n this.clusterProps = [];\n }\n\n load(points) {\n const {log, minZoom, maxZoom} = this.options;\n\n if (log) console.time('total time');\n\n const timerId = `prepare ${ points.length } points`;\n if (log) console.time(timerId);\n\n this.points = points;\n\n // generate a cluster object for each point and index input points into a KD-tree\n const data = [];\n\n for (let i = 0; i < points.length; i++) {\n const p = points[i];\n if (!p.geometry) continue;\n\n const [lng, lat] = p.geometry.coordinates;\n const x = fround(lngX(lng));\n const y = fround(latY(lat));\n // store internal point/cluster data in flat numeric arrays for performance\n data.push(\n x, y, // projected point coordinates\n Infinity, // the last zoom the point was processed at\n i, // index of the source feature in the original input array\n -1, // parent cluster id\n 1 // number of points in a cluster\n );\n if (this.options.reduce) data.push(0); // noop\n }\n let tree = this.trees[maxZoom + 1] = this._createTree(data);\n\n if (log) console.timeEnd(timerId);\n\n // cluster points on max zoom, then cluster the results on previous zoom, etc.;\n // results in a cluster hierarchy across zoom levels\n for (let z = maxZoom; z >= minZoom; z--) {\n const now = +Date.now();\n\n // create a new set of clusters for the zoom and index them with a KD-tree\n tree = this.trees[z] = this._createTree(this._cluster(tree, z));\n\n if (log) console.log('z%d: %d clusters in %dms', z, tree.numItems, +Date.now() - now);\n }\n\n if (log) console.timeEnd('total time');\n\n return this;\n }\n\n getClusters(bbox, zoom) {\n let minLng = ((bbox[0] + 180) % 360 + 360) % 360 - 180;\n const minLat = Math.max(-90, Math.min(90, bbox[1]));\n let maxLng = bbox[2] === 180 ? 180 : ((bbox[2] + 180) % 360 + 360) % 360 - 180;\n const maxLat = Math.max(-90, Math.min(90, bbox[3]));\n\n if (bbox[2] - bbox[0] >= 360) {\n minLng = -180;\n maxLng = 180;\n } else if (minLng > maxLng) {\n const easternHem = this.getClusters([minLng, minLat, 180, maxLat], zoom);\n const westernHem = this.getClusters([-180, minLat, maxLng, maxLat], zoom);\n return easternHem.concat(westernHem);\n }\n\n const tree = this.trees[this._limitZoom(zoom)];\n const ids = tree.range(lngX(minLng), latY(maxLat), lngX(maxLng), latY(minLat));\n const data = tree.data;\n const clusters = [];\n for (const id of ids) {\n const k = this.stride * id;\n clusters.push(data[k + OFFSET_NUM] > 1 ? getClusterJSON(data, k, this.clusterProps) : this.points[data[k + OFFSET_ID]]);\n }\n return clusters;\n }\n\n getChildren(clusterId) {\n const originId = this._getOriginId(clusterId);\n const originZoom = this._getOriginZoom(clusterId);\n const errorMsg = 'No cluster with the specified id.';\n\n const tree = this.trees[originZoom];\n if (!tree) throw new Error(errorMsg);\n\n const data = tree.data;\n if (originId * this.stride >= data.length) throw new Error(errorMsg);\n\n const r = this.options.radius / (this.options.extent * Math.pow(2, originZoom - 1));\n const x = data[originId * this.stride];\n const y = data[originId * this.stride + 1];\n const ids = tree.within(x, y, r);\n const children = [];\n for (const id of ids) {\n const k = id * this.stride;\n if (data[k + OFFSET_PARENT] === clusterId) {\n children.push(data[k + OFFSET_NUM] > 1 ? getClusterJSON(data, k, this.clusterProps) : this.points[data[k + OFFSET_ID]]);\n }\n }\n\n if (children.length === 0) throw new Error(errorMsg);\n\n return children;\n }\n\n getLeaves(clusterId, limit, offset) {\n limit = limit || 10;\n offset = offset || 0;\n\n const leaves = [];\n this._appendLeaves(leaves, clusterId, limit, offset, 0);\n\n return leaves;\n }\n\n getTile(z, x, y) {\n const tree = this.trees[this._limitZoom(z)];\n const z2 = Math.pow(2, z);\n const {extent, radius} = this.options;\n const p = radius / extent;\n const top = (y - p) / z2;\n const bottom = (y + 1 + p) / z2;\n\n const tile = {\n features: []\n };\n\n this._addTileFeatures(\n tree.range((x - p) / z2, top, (x + 1 + p) / z2, bottom),\n tree.data, x, y, z2, tile);\n\n if (x === 0) {\n this._addTileFeatures(\n tree.range(1 - p / z2, top, 1, bottom),\n tree.data, z2, y, z2, tile);\n }\n if (x === z2 - 1) {\n this._addTileFeatures(\n tree.range(0, top, p / z2, bottom),\n tree.data, -1, y, z2, tile);\n }\n\n return tile.features.length ? tile : null;\n }\n\n getClusterExpansionZoom(clusterId) {\n let expansionZoom = this._getOriginZoom(clusterId) - 1;\n while (expansionZoom <= this.options.maxZoom) {\n const children = this.getChildren(clusterId);\n expansionZoom++;\n if (children.length !== 1) break;\n clusterId = children[0].properties.cluster_id;\n }\n return expansionZoom;\n }\n\n _appendLeaves(result, clusterId, limit, offset, skipped) {\n const children = this.getChildren(clusterId);\n\n for (const child of children) {\n const props = child.properties;\n\n if (props && props.cluster) {\n if (skipped + props.point_count <= offset) {\n // skip the whole cluster\n skipped += props.point_count;\n } else {\n // enter the cluster\n skipped = this._appendLeaves(result, props.cluster_id, limit, offset, skipped);\n // exit the cluster\n }\n } else if (skipped < offset) {\n // skip a single point\n skipped++;\n } else {\n // add a single point\n result.push(child);\n }\n if (result.length === limit) break;\n }\n\n return skipped;\n }\n\n _createTree(data) {\n const tree = new KDBush(data.length / this.stride | 0, this.options.nodeSize, Float32Array);\n for (let i = 0; i < data.length; i += this.stride) tree.add(data[i], data[i + 1]);\n tree.finish();\n tree.data = data;\n return tree;\n }\n\n _addTileFeatures(ids, data, x, y, z2, tile) {\n for (const i of ids) {\n const k = i * this.stride;\n const isCluster = data[k + OFFSET_NUM] > 1;\n\n let tags, px, py;\n if (isCluster) {\n tags = getClusterProperties(data, k, this.clusterProps);\n px = data[k];\n py = data[k + 1];\n } else {\n const p = this.points[data[k + OFFSET_ID]];\n tags = p.properties;\n const [lng, lat] = p.geometry.coordinates;\n px = lngX(lng);\n py = latY(lat);\n }\n\n const f = {\n type: 1,\n geometry: [[\n Math.round(this.options.extent * (px * z2 - x)),\n Math.round(this.options.extent * (py * z2 - y))\n ]],\n tags\n };\n\n // assign id\n let id;\n if (isCluster || this.options.generateId) {\n // optionally generate id for points\n id = data[k + OFFSET_ID];\n } else {\n // keep id if already assigned\n id = this.points[data[k + OFFSET_ID]].id;\n }\n\n if (id !== undefined) f.id = id;\n\n tile.features.push(f);\n }\n }\n\n _limitZoom(z) {\n return Math.max(this.options.minZoom, Math.min(Math.floor(+z), this.options.maxZoom + 1));\n }\n\n _cluster(tree, zoom) {\n const {radius, extent, reduce, minPoints} = this.options;\n const r = radius / (extent * Math.pow(2, zoom));\n const data = tree.data;\n const nextData = [];\n const stride = this.stride;\n\n // loop through each point\n for (let i = 0; i < data.length; i += stride) {\n // if we've already visited the point at this zoom level, skip it\n if (data[i + OFFSET_ZOOM] <= zoom) continue;\n data[i + OFFSET_ZOOM] = zoom;\n\n // find all nearby points\n const x = data[i];\n const y = data[i + 1];\n const neighborIds = tree.within(data[i], data[i + 1], r);\n\n const numPointsOrigin = data[i + OFFSET_NUM];\n let numPoints = numPointsOrigin;\n\n // count the number of points in a potential cluster\n for (const neighborId of neighborIds) {\n const k = neighborId * stride;\n // filter out neighbors that are already processed\n if (data[k + OFFSET_ZOOM] > zoom) numPoints += data[k + OFFSET_NUM];\n }\n\n // if there were neighbors to merge, and there are enough points to form a cluster\n if (numPoints > numPointsOrigin && numPoints >= minPoints) {\n let wx = x * numPointsOrigin;\n let wy = y * numPointsOrigin;\n\n let clusterProperties;\n let clusterPropIndex = -1;\n\n // encode both zoom and point index on which the cluster originated -- offset by total length of features\n const id = ((i / stride | 0) << 5) + (zoom + 1) + this.points.length;\n\n for (const neighborId of neighborIds) {\n const k = neighborId * stride;\n\n if (data[k + OFFSET_ZOOM] <= zoom) continue;\n data[k + OFFSET_ZOOM] = zoom; // save the zoom (so it doesn't get processed twice)\n\n const numPoints2 = data[k + OFFSET_NUM];\n wx += data[k] * numPoints2; // accumulate coordinates for calculating weighted center\n wy += data[k + 1] * numPoints2;\n\n data[k + OFFSET_PARENT] = id;\n\n if (reduce) {\n if (!clusterProperties) {\n clusterProperties = this._map(data, i, true);\n clusterPropIndex = this.clusterProps.length;\n this.clusterProps.push(clusterProperties);\n }\n reduce(clusterProperties, this._map(data, k));\n }\n }\n\n data[i + OFFSET_PARENT] = id;\n nextData.push(wx / numPoints, wy / numPoints, Infinity, id, -1, numPoints);\n if (reduce) nextData.push(clusterPropIndex);\n\n } else { // left points as unclustered\n for (let j = 0; j < stride; j++) nextData.push(data[i + j]);\n\n if (numPoints > 1) {\n for (const neighborId of neighborIds) {\n const k = neighborId * stride;\n if (data[k + OFFSET_ZOOM] <= zoom) continue;\n data[k + OFFSET_ZOOM] = zoom;\n for (let j = 0; j < stride; j++) nextData.push(data[k + j]);\n }\n }\n }\n }\n\n return nextData;\n }\n\n // get index of the point from which the cluster originated\n _getOriginId(clusterId) {\n return (clusterId - this.points.length) >> 5;\n }\n\n // get zoom of the point from which the cluster originated\n _getOriginZoom(clusterId) {\n return (clusterId - this.points.length) % 32;\n }\n\n _map(data, i, clone) {\n if (data[i + OFFSET_NUM] > 1) {\n const props = this.clusterProps[data[i + OFFSET_PROP]];\n return clone ? Object.assign({}, props) : props;\n }\n const original = this.points[data[i + OFFSET_ID]].properties;\n const result = this.options.map(original);\n return clone && result === original ? Object.assign({}, result) : result;\n }\n}\n\nfunction getClusterJSON(data, i, clusterProps) {\n return {\n type: 'Feature',\n id: data[i + OFFSET_ID],\n properties: getClusterProperties(data, i, clusterProps),\n geometry: {\n type: 'Point',\n coordinates: [xLng(data[i]), yLat(data[i + 1])]\n }\n };\n}\n\nfunction getClusterProperties(data, i, clusterProps) {\n const count = data[i + OFFSET_NUM];\n const abbrev =\n count >= 10000 ? `${Math.round(count / 1000) }k` :\n count >= 1000 ? `${Math.round(count / 100) / 10 }k` : count;\n const propIndex = data[i + OFFSET_PROP];\n const properties = propIndex === -1 ? {} : Object.assign({}, clusterProps[propIndex]);\n return Object.assign(properties, {\n cluster: true,\n cluster_id: data[i + OFFSET_ID],\n point_count: count,\n point_count_abbreviated: abbrev\n });\n}\n\n// longitude/latitude to spherical mercator in [0..1] range\nfunction lngX(lng) {\n return lng / 360 + 0.5;\n}\nfunction latY(lat) {\n const sin = Math.sin(lat * Math.PI / 180);\n const y = (0.5 - 0.25 * Math.log((1 + sin) / (1 - sin)) / Math.PI);\n return y < 0 ? 0 : y > 1 ? 1 : y;\n}\n\n// spherical mercator to longitude/latitude\nfunction xLng(x) {\n return (x - 0.5) * 360;\n}\nfunction yLat(y) {\n const y2 = (180 - y * 360) * Math.PI / 180;\n return 360 * Math.atan(Math.exp(y2)) / Math.PI - 90;\n}\n","\n// calculate simplification data using optimized Douglas-Peucker algorithm\n\nexport default function simplify(coords, first, last, sqTolerance) {\n let maxSqDist = sqTolerance;\n const mid = first + ((last - first) >> 1);\n let minPosToMid = last - first;\n let index;\n\n const ax = coords[first];\n const ay = coords[first + 1];\n const bx = coords[last];\n const by = coords[last + 1];\n\n for (let i = first + 3; i < last; i += 3) {\n const d = getSqSegDist(coords[i], coords[i + 1], ax, ay, bx, by);\n\n if (d > maxSqDist) {\n index = i;\n maxSqDist = d;\n\n } else if (d === maxSqDist) {\n // a workaround to ensure we choose a pivot close to the middle of the list,\n // reducing recursion depth, for certain degenerate inputs\n // https://github.com/mapbox/geojson-vt/issues/104\n const posToMid = Math.abs(i - mid);\n if (posToMid < minPosToMid) {\n index = i;\n minPosToMid = posToMid;\n }\n }\n }\n\n if (maxSqDist > sqTolerance) {\n if (index - first > 3) simplify(coords, first, index, sqTolerance);\n coords[index + 2] = maxSqDist;\n if (last - index > 3) simplify(coords, index, last, sqTolerance);\n }\n}\n\n// square distance from a point to a segment\nfunction getSqSegDist(px, py, x, y, bx, by) {\n\n let dx = bx - x;\n let dy = by - y;\n\n if (dx !== 0 || dy !== 0) {\n\n const t = ((px - x) * dx + (py - y) * dy) / (dx * dx + dy * dy);\n\n if (t > 1) {\n x = bx;\n y = by;\n\n } else if (t > 0) {\n x += dx * t;\n y += dy * t;\n }\n }\n\n dx = px - x;\n dy = py - y;\n\n return dx * dx + dy * dy;\n}\n","\nexport default function createFeature(id, type, geom, tags) {\n const feature = {\n id: id == null ? null : id,\n type,\n geometry: geom,\n tags,\n minX: Infinity,\n minY: Infinity,\n maxX: -Infinity,\n maxY: -Infinity\n };\n\n if (type === 'Point' || type === 'MultiPoint' || type === 'LineString') {\n calcLineBBox(feature, geom);\n\n } else if (type === 'Polygon') {\n // the outer ring (ie [0]) contains all inner rings\n calcLineBBox(feature, geom[0]);\n\n } else if (type === 'MultiLineString') {\n for (const line of geom) {\n calcLineBBox(feature, line);\n }\n\n } else if (type === 'MultiPolygon') {\n for (const polygon of geom) {\n // the outer ring (ie [0]) contains all inner rings\n calcLineBBox(feature, polygon[0]);\n }\n }\n\n return feature;\n}\n\nfunction calcLineBBox(feature, geom) {\n for (let i = 0; i < geom.length; i += 3) {\n feature.minX = Math.min(feature.minX, geom[i]);\n feature.minY = Math.min(feature.minY, geom[i + 1]);\n feature.maxX = Math.max(feature.maxX, geom[i]);\n feature.maxY = Math.max(feature.maxY, geom[i + 1]);\n }\n}\n","\nimport simplify from './simplify.js';\nimport createFeature from './feature.js';\n\n// converts GeoJSON feature into an intermediate projected JSON vector format with simplification data\n\nexport default function convert(data, options) {\n const features = [];\n if (data.type === 'FeatureCollection') {\n for (let i = 0; i < data.features.length; i++) {\n convertFeature(features, data.features[i], options, i);\n }\n\n } else if (data.type === 'Feature') {\n convertFeature(features, data, options);\n\n } else {\n // single geometry or a geometry collection\n convertFeature(features, {geometry: data}, options);\n }\n\n return features;\n}\n\nfunction convertFeature(features, geojson, options, index) {\n if (!geojson.geometry) return;\n\n const coords = geojson.geometry.coordinates;\n if (coords && coords.length === 0) return;\n\n const type = geojson.geometry.type;\n const tolerance = Math.pow(options.tolerance / ((1 << options.maxZoom) * options.extent), 2);\n let geometry = [];\n let id = geojson.id;\n if (options.promoteId) {\n id = geojson.properties[options.promoteId];\n } else if (options.generateId) {\n id = index || 0;\n }\n if (type === 'Point') {\n convertPoint(coords, geometry);\n\n } else if (type === 'MultiPoint') {\n for (const p of coords) {\n convertPoint(p, geometry);\n }\n\n } else if (type === 'LineString') {\n convertLine(coords, geometry, tolerance, false);\n\n } else if (type === 'MultiLineString') {\n if (options.lineMetrics) {\n // explode into linestrings to be able to track metrics\n for (const line of coords) {\n geometry = [];\n convertLine(line, geometry, tolerance, false);\n features.push(createFeature(id, 'LineString', geometry, geojson.properties));\n }\n return;\n } else {\n convertLines(coords, geometry, tolerance, false);\n }\n\n } else if (type === 'Polygon') {\n convertLines(coords, geometry, tolerance, true);\n\n } else if (type === 'MultiPolygon') {\n for (const polygon of coords) {\n const newPolygon = [];\n convertLines(polygon, newPolygon, tolerance, true);\n geometry.push(newPolygon);\n }\n } else if (type === 'GeometryCollection') {\n for (const singleGeometry of geojson.geometry.geometries) {\n convertFeature(features, {\n id,\n geometry: singleGeometry,\n properties: geojson.properties\n }, options, index);\n }\n return;\n } else {\n throw new Error('Input data is not a valid GeoJSON object.');\n }\n\n features.push(createFeature(id, type, geometry, geojson.properties));\n}\n\nfunction convertPoint(coords, out) {\n out.push(projectX(coords[0]), projectY(coords[1]), 0);\n}\n\nfunction convertLine(ring, out, tolerance, isPolygon) {\n let x0, y0;\n let size = 0;\n\n for (let j = 0; j < ring.length; j++) {\n const x = projectX(ring[j][0]);\n const y = projectY(ring[j][1]);\n\n out.push(x, y, 0);\n\n if (j > 0) {\n if (isPolygon) {\n size += (x0 * y - x * y0) / 2; // area\n } else {\n size += Math.sqrt(Math.pow(x - x0, 2) + Math.pow(y - y0, 2)); // length\n }\n }\n x0 = x;\n y0 = y;\n }\n\n const last = out.length - 3;\n out[2] = 1;\n simplify(out, 0, last, tolerance);\n out[last + 2] = 1;\n\n out.size = Math.abs(size);\n out.start = 0;\n out.end = out.size;\n}\n\nfunction convertLines(rings, out, tolerance, isPolygon) {\n for (let i = 0; i < rings.length; i++) {\n const geom = [];\n convertLine(rings[i], geom, tolerance, isPolygon);\n out.push(geom);\n }\n}\n\nfunction projectX(x) {\n return x / 360 + 0.5;\n}\n\nfunction projectY(y) {\n const sin = Math.sin(y * Math.PI / 180);\n const y2 = 0.5 - 0.25 * Math.log((1 + sin) / (1 - sin)) / Math.PI;\n return y2 < 0 ? 0 : y2 > 1 ? 1 : y2;\n}\n","\nimport createFeature from './feature.js';\n\n/* clip features between two vertical or horizontal axis-parallel lines:\n * | |\n * ___|___ | /\n * / | \\____|____/\n * | |\n *\n * k1 and k2 are the line coordinates\n * axis: 0 for x, 1 for y\n * minAll and maxAll: minimum and maximum coordinate value for all features\n */\nexport default function clip(features, scale, k1, k2, axis, minAll, maxAll, options) {\n k1 /= scale;\n k2 /= scale;\n\n if (minAll >= k1 && maxAll < k2) return features; // trivial accept\n else if (maxAll < k1 || minAll >= k2) return null; // trivial reject\n\n const clipped = [];\n\n for (const feature of features) {\n const geometry = feature.geometry;\n let type = feature.type;\n\n const min = axis === 0 ? feature.minX : feature.minY;\n const max = axis === 0 ? feature.maxX : feature.maxY;\n\n if (min >= k1 && max < k2) { // trivial accept\n clipped.push(feature);\n continue;\n } else if (max < k1 || min >= k2) { // trivial reject\n continue;\n }\n\n let newGeometry = [];\n\n if (type === 'Point' || type === 'MultiPoint') {\n clipPoints(geometry, newGeometry, k1, k2, axis);\n\n } else if (type === 'LineString') {\n clipLine(geometry, newGeometry, k1, k2, axis, false, options.lineMetrics);\n\n } else if (type === 'MultiLineString') {\n clipLines(geometry, newGeometry, k1, k2, axis, false);\n\n } else if (type === 'Polygon') {\n clipLines(geometry, newGeometry, k1, k2, axis, true);\n\n } else if (type === 'MultiPolygon') {\n for (const polygon of geometry) {\n const newPolygon = [];\n clipLines(polygon, newPolygon, k1, k2, axis, true);\n if (newPolygon.length) {\n newGeometry.push(newPolygon);\n }\n }\n }\n\n if (newGeometry.length) {\n if (options.lineMetrics && type === 'LineString') {\n for (const line of newGeometry) {\n clipped.push(createFeature(feature.id, type, line, feature.tags));\n }\n continue;\n }\n\n if (type === 'LineString' || type === 'MultiLineString') {\n if (newGeometry.length === 1) {\n type = 'LineString';\n newGeometry = newGeometry[0];\n } else {\n type = 'MultiLineString';\n }\n }\n if (type === 'Point' || type === 'MultiPoint') {\n type = newGeometry.length === 3 ? 'Point' : 'MultiPoint';\n }\n\n clipped.push(createFeature(feature.id, type, newGeometry, feature.tags));\n }\n }\n\n return clipped.length ? clipped : null;\n}\n\nfunction clipPoints(geom, newGeom, k1, k2, axis) {\n for (let i = 0; i < geom.length; i += 3) {\n const a = geom[i + axis];\n\n if (a >= k1 && a <= k2) {\n addPoint(newGeom, geom[i], geom[i + 1], geom[i + 2]);\n }\n }\n}\n\nfunction clipLine(geom, newGeom, k1, k2, axis, isPolygon, trackMetrics) {\n\n let slice = newSlice(geom);\n const intersect = axis === 0 ? intersectX : intersectY;\n let len = geom.start;\n let segLen, t;\n\n for (let i = 0; i < geom.length - 3; i += 3) {\n const ax = geom[i];\n const ay = geom[i + 1];\n const az = geom[i + 2];\n const bx = geom[i + 3];\n const by = geom[i + 4];\n const a = axis === 0 ? ax : ay;\n const b = axis === 0 ? bx : by;\n let exited = false;\n\n if (trackMetrics) segLen = Math.sqrt(Math.pow(ax - bx, 2) + Math.pow(ay - by, 2));\n\n if (a < k1) {\n // ---|--> | (line enters the clip region from the left)\n if (b > k1) {\n t = intersect(slice, ax, ay, bx, by, k1);\n if (trackMetrics) slice.start = len + segLen * t;\n }\n } else if (a > k2) {\n // | <--|--- (line enters the clip region from the right)\n if (b < k2) {\n t = intersect(slice, ax, ay, bx, by, k2);\n if (trackMetrics) slice.start = len + segLen * t;\n }\n } else {\n addPoint(slice, ax, ay, az);\n }\n if (b < k1 && a >= k1) {\n // <--|--- | or <--|-----|--- (line exits the clip region on the left)\n t = intersect(slice, ax, ay, bx, by, k1);\n exited = true;\n }\n if (b > k2 && a <= k2) {\n // | ---|--> or ---|-----|--> (line exits the clip region on the right)\n t = intersect(slice, ax, ay, bx, by, k2);\n exited = true;\n }\n\n if (!isPolygon && exited) {\n if (trackMetrics) slice.end = len + segLen * t;\n newGeom.push(slice);\n slice = newSlice(geom);\n }\n\n if (trackMetrics) len += segLen;\n }\n\n // add the last point\n let last = geom.length - 3;\n const ax = geom[last];\n const ay = geom[last + 1];\n const az = geom[last + 2];\n const a = axis === 0 ? ax : ay;\n if (a >= k1 && a <= k2) addPoint(slice, ax, ay, az);\n\n // close the polygon if its endpoints are not the same after clipping\n last = slice.length - 3;\n if (isPolygon && last >= 3 && (slice[last] !== slice[0] || slice[last + 1] !== slice[1])) {\n addPoint(slice, slice[0], slice[1], slice[2]);\n }\n\n // add the final slice\n if (slice.length) {\n newGeom.push(slice);\n }\n}\n\nfunction newSlice(line) {\n const slice = [];\n slice.size = line.size;\n slice.start = line.start;\n slice.end = line.end;\n return slice;\n}\n\nfunction clipLines(geom, newGeom, k1, k2, axis, isPolygon) {\n for (const line of geom) {\n clipLine(line, newGeom, k1, k2, axis, isPolygon, false);\n }\n}\n\nfunction addPoint(out, x, y, z) {\n out.push(x, y, z);\n}\n\nfunction intersectX(out, ax, ay, bx, by, x) {\n const t = (x - ax) / (bx - ax);\n addPoint(out, x, ay + (by - ay) * t, 1);\n return t;\n}\n\nfunction intersectY(out, ax, ay, bx, by, y) {\n const t = (y - ay) / (by - ay);\n addPoint(out, ax + (bx - ax) * t, y, 1);\n return t;\n}\n","\nimport clip from './clip.js';\nimport createFeature from './feature.js';\n\nexport default function wrap(features, options) {\n const buffer = options.buffer / options.extent;\n let merged = features;\n const left = clip(features, 1, -1 - buffer, buffer, 0, -1, 2, options); // left world copy\n const right = clip(features, 1, 1 - buffer, 2 + buffer, 0, -1, 2, options); // right world copy\n\n if (left || right) {\n merged = clip(features, 1, -buffer, 1 + buffer, 0, -1, 2, options) || []; // center world copy\n\n if (left) merged = shiftFeatureCoords(left, 1).concat(merged); // merge left into center\n if (right) merged = merged.concat(shiftFeatureCoords(right, -1)); // merge right into center\n }\n\n return merged;\n}\n\nfunction shiftFeatureCoords(features, offset) {\n const newFeatures = [];\n\n for (let i = 0; i < features.length; i++) {\n const feature = features[i];\n const type = feature.type;\n\n let newGeometry;\n\n if (type === 'Point' || type === 'MultiPoint' || type === 'LineString') {\n newGeometry = shiftCoords(feature.geometry, offset);\n\n } else if (type === 'MultiLineString' || type === 'Polygon') {\n newGeometry = [];\n for (const line of feature.geometry) {\n newGeometry.push(shiftCoords(line, offset));\n }\n } else if (type === 'MultiPolygon') {\n newGeometry = [];\n for (const polygon of feature.geometry) {\n const newPolygon = [];\n for (const line of polygon) {\n newPolygon.push(shiftCoords(line, offset));\n }\n newGeometry.push(newPolygon);\n }\n }\n\n newFeatures.push(createFeature(feature.id, type, newGeometry, feature.tags));\n }\n\n return newFeatures;\n}\n\nfunction shiftCoords(points, offset) {\n const newPoints = [];\n newPoints.size = points.size;\n\n if (points.start !== undefined) {\n newPoints.start = points.start;\n newPoints.end = points.end;\n }\n\n for (let i = 0; i < points.length; i += 3) {\n newPoints.push(points[i] + offset, points[i + 1], points[i + 2]);\n }\n return newPoints;\n}\n","\n// Transforms the coordinates of each feature in the given tile from\n// mercator-projected space into (extent x extent) tile space.\nexport default function transformTile(tile, extent) {\n if (tile.transformed) return tile;\n\n const z2 = 1 << tile.z;\n const tx = tile.x;\n const ty = tile.y;\n\n for (const feature of tile.features) {\n const geom = feature.geometry;\n const type = feature.type;\n\n feature.geometry = [];\n\n if (type === 1) {\n for (let j = 0; j < geom.length; j += 2) {\n feature.geometry.push(transformPoint(geom[j], geom[j + 1], extent, z2, tx, ty));\n }\n } else {\n for (let j = 0; j < geom.length; j++) {\n const ring = [];\n for (let k = 0; k < geom[j].length; k += 2) {\n ring.push(transformPoint(geom[j][k], geom[j][k + 1], extent, z2, tx, ty));\n }\n feature.geometry.push(ring);\n }\n }\n }\n\n tile.transformed = true;\n\n return tile;\n}\n\nfunction transformPoint(x, y, extent, z2, tx, ty) {\n return [\n Math.round(extent * (x * z2 - tx)),\n Math.round(extent * (y * z2 - ty))];\n}\n","\nexport default function createTile(features, z, tx, ty, options) {\n const tolerance = z === options.maxZoom ? 0 : options.tolerance / ((1 << z) * options.extent);\n const tile = {\n features: [],\n numPoints: 0,\n numSimplified: 0,\n numFeatures: features.length,\n source: null,\n x: tx,\n y: ty,\n z,\n transformed: false,\n minX: 2,\n minY: 1,\n maxX: -1,\n maxY: 0\n };\n for (const feature of features) {\n addFeature(tile, feature, tolerance, options);\n }\n return tile;\n}\n\nfunction addFeature(tile, feature, tolerance, options) {\n const geom = feature.geometry;\n const type = feature.type;\n const simplified = [];\n\n tile.minX = Math.min(tile.minX, feature.minX);\n tile.minY = Math.min(tile.minY, feature.minY);\n tile.maxX = Math.max(tile.maxX, feature.maxX);\n tile.maxY = Math.max(tile.maxY, feature.maxY);\n\n if (type === 'Point' || type === 'MultiPoint') {\n for (let i = 0; i < geom.length; i += 3) {\n simplified.push(geom[i], geom[i + 1]);\n tile.numPoints++;\n tile.numSimplified++;\n }\n\n } else if (type === 'LineString') {\n addLine(simplified, geom, tile, tolerance, false, false);\n\n } else if (type === 'MultiLineString' || type === 'Polygon') {\n for (let i = 0; i < geom.length; i++) {\n addLine(simplified, geom[i], tile, tolerance, type === 'Polygon', i === 0);\n }\n\n } else if (type === 'MultiPolygon') {\n\n for (let k = 0; k < geom.length; k++) {\n const polygon = geom[k];\n for (let i = 0; i < polygon.length; i++) {\n addLine(simplified, polygon[i], tile, tolerance, true, i === 0);\n }\n }\n }\n\n if (simplified.length) {\n let tags = feature.tags || null;\n\n if (type === 'LineString' && options.lineMetrics) {\n tags = {};\n for (const key in feature.tags) tags[key] = feature.tags[key];\n tags['mapbox_clip_start'] = geom.start / geom.size;\n tags['mapbox_clip_end'] = geom.end / geom.size;\n }\n\n const tileFeature = {\n geometry: simplified,\n type: type === 'Polygon' || type === 'MultiPolygon' ? 3 :\n (type === 'LineString' || type === 'MultiLineString' ? 2 : 1),\n tags\n };\n if (feature.id !== null) {\n tileFeature.id = feature.id;\n }\n tile.features.push(tileFeature);\n }\n}\n\nfunction addLine(result, geom, tile, tolerance, isPolygon, isOuter) {\n const sqTolerance = tolerance * tolerance;\n\n if (tolerance > 0 && (geom.size < (isPolygon ? sqTolerance : tolerance))) {\n tile.numPoints += geom.length / 3;\n return;\n }\n\n const ring = [];\n\n for (let i = 0; i < geom.length; i += 3) {\n if (tolerance === 0 || geom[i + 2] > sqTolerance) {\n tile.numSimplified++;\n ring.push(geom[i], geom[i + 1]);\n }\n tile.numPoints++;\n }\n\n if (isPolygon) rewind(ring, isOuter);\n\n result.push(ring);\n}\n\nfunction rewind(ring, clockwise) {\n let area = 0;\n for (let i = 0, len = ring.length, j = len - 2; i < len; j = i, i += 2) {\n area += (ring[i] - ring[j]) * (ring[i + 1] + ring[j + 1]);\n }\n if (area > 0 === clockwise) {\n for (let i = 0, len = ring.length; i < len / 2; i += 2) {\n const x = ring[i];\n const y = ring[i + 1];\n ring[i] = ring[len - 2 - i];\n ring[i + 1] = ring[len - 1 - i];\n ring[len - 2 - i] = x;\n ring[len - 1 - i] = y;\n }\n }\n}\n","\nimport convert from './convert.js'; // GeoJSON conversion and preprocessing\nimport clip from './clip.js'; // stripe clipping algorithm\nimport wrap from './wrap.js'; // date line processing\nimport transform from './transform.js'; // coordinate transformation\nimport createTile from './tile.js'; // final simplified tile generation\n\nconst defaultOptions = {\n maxZoom: 14, // max zoom to preserve detail on\n indexMaxZoom: 5, // max zoom in the tile index\n indexMaxPoints: 100000, // max number of points per tile in the tile index\n tolerance: 3, // simplification tolerance (higher means simpler)\n extent: 4096, // tile extent\n buffer: 64, // tile buffer on each side\n lineMetrics: false, // whether to calculate line metrics\n promoteId: null, // name of a feature property to be promoted to feature.id\n generateId: false, // whether to generate feature ids. Cannot be used with promoteId\n debug: 0 // logging level (0, 1 or 2)\n};\n\nclass GeoJSONVT {\n constructor(data, options) {\n options = this.options = extend(Object.create(defaultOptions), options);\n\n const debug = options.debug;\n\n if (debug) console.time('preprocess data');\n\n if (options.maxZoom < 0 || options.maxZoom > 24) throw new Error('maxZoom should be in the 0-24 range');\n if (options.promoteId && options.generateId) throw new Error('promoteId and generateId cannot be used together.');\n\n // projects and adds simplification info\n let features = convert(data, options);\n\n // tiles and tileCoords are part of the public API\n this.tiles = {};\n this.tileCoords = [];\n\n if (debug) {\n console.timeEnd('preprocess data');\n console.log('index: maxZoom: %d, maxPoints: %d', options.indexMaxZoom, options.indexMaxPoints);\n console.time('generate tiles');\n this.stats = {};\n this.total = 0;\n }\n\n // wraps features (ie extreme west and extreme east)\n features = wrap(features, options);\n\n // start slicing from the top tile down\n if (features.length) this.splitTile(features, 0, 0, 0);\n\n if (debug) {\n if (features.length) console.log('features: %d, points: %d', this.tiles[0].numFeatures, this.tiles[0].numPoints);\n console.timeEnd('generate tiles');\n console.log('tiles generated:', this.total, JSON.stringify(this.stats));\n }\n }\n\n // splits features from a parent tile to sub-tiles.\n // z, x, and y are the coordinates of the parent tile\n // cz, cx, and cy are the coordinates of the target tile\n //\n // If no target tile is specified, splitting stops when we reach the maximum\n // zoom or the number of points is low as specified in the options.\n splitTile(features, z, x, y, cz, cx, cy) {\n\n const stack = [features, z, x, y];\n const options = this.options;\n const debug = options.debug;\n\n // avoid recursion by using a processing queue\n while (stack.length) {\n y = stack.pop();\n x = stack.pop();\n z = stack.pop();\n features = stack.pop();\n\n const z2 = 1 << z;\n const id = toID(z, x, y);\n let tile = this.tiles[id];\n\n if (!tile) {\n if (debug > 1) console.time('creation');\n\n tile = this.tiles[id] = createTile(features, z, x, y, options);\n this.tileCoords.push({z, x, y});\n\n if (debug) {\n if (debug > 1) {\n console.log('tile z%d-%d-%d (features: %d, points: %d, simplified: %d)',\n z, x, y, tile.numFeatures, tile.numPoints, tile.numSimplified);\n console.timeEnd('creation');\n }\n const key = `z${ z}`;\n this.stats[key] = (this.stats[key] || 0) + 1;\n this.total++;\n }\n }\n\n // save reference to original geometry in tile so that we can drill down later if we stop now\n tile.source = features;\n\n // if it's the first-pass tiling\n if (cz == null) {\n // stop tiling if we reached max zoom, or if the tile is too simple\n if (z === options.indexMaxZoom || tile.numPoints <= options.indexMaxPoints) continue;\n // if a drilldown to a specific tile\n } else if (z === options.maxZoom || z === cz) {\n // stop tiling if we reached base zoom or our target tile zoom\n continue;\n } else if (cz != null) {\n // stop tiling if it's not an ancestor of the target tile\n const zoomSteps = cz - z;\n if (x !== cx >> zoomSteps || y !== cy >> zoomSteps) continue;\n }\n\n // if we slice further down, no need to keep source geometry\n tile.source = null;\n\n if (features.length === 0) continue;\n\n if (debug > 1) console.time('clipping');\n\n // values we'll use for clipping\n const k1 = 0.5 * options.buffer / options.extent;\n const k2 = 0.5 - k1;\n const k3 = 0.5 + k1;\n const k4 = 1 + k1;\n\n let tl = null;\n let bl = null;\n let tr = null;\n let br = null;\n\n let left = clip(features, z2, x - k1, x + k3, 0, tile.minX, tile.maxX, options);\n let right = clip(features, z2, x + k2, x + k4, 0, tile.minX, tile.maxX, options);\n features = null;\n\n if (left) {\n tl = clip(left, z2, y - k1, y + k3, 1, tile.minY, tile.maxY, options);\n bl = clip(left, z2, y + k2, y + k4, 1, tile.minY, tile.maxY, options);\n left = null;\n }\n\n if (right) {\n tr = clip(right, z2, y - k1, y + k3, 1, tile.minY, tile.maxY, options);\n br = clip(right, z2, y + k2, y + k4, 1, tile.minY, tile.maxY, options);\n right = null;\n }\n\n if (debug > 1) console.timeEnd('clipping');\n\n stack.push(tl || [], z + 1, x * 2, y * 2);\n stack.push(bl || [], z + 1, x * 2, y * 2 + 1);\n stack.push(tr || [], z + 1, x * 2 + 1, y * 2);\n stack.push(br || [], z + 1, x * 2 + 1, y * 2 + 1);\n }\n }\n\n getTile(z, x, y) {\n z = +z;\n x = +x;\n y = +y;\n\n const options = this.options;\n const {extent, debug} = options;\n\n if (z < 0 || z > 24) return null;\n\n const z2 = 1 << z;\n x = (x + z2) & (z2 - 1); // wrap tile x coordinate\n\n const id = toID(z, x, y);\n if (this.tiles[id]) return transform(this.tiles[id], extent);\n\n if (debug > 1) console.log('drilling down to z%d-%d-%d', z, x, y);\n\n let z0 = z;\n let x0 = x;\n let y0 = y;\n let parent;\n\n while (!parent && z0 > 0) {\n z0--;\n x0 = x0 >> 1;\n y0 = y0 >> 1;\n parent = this.tiles[toID(z0, x0, y0)];\n }\n\n if (!parent || !parent.source) return null;\n\n // if we found a parent tile containing the original geometry, we can drill down from it\n if (debug > 1) {\n console.log('found parent tile z%d-%d-%d', z0, x0, y0);\n console.time('drilling down');\n }\n this.splitTile(parent.source, z0, x0, y0, z, x, y);\n if (debug > 1) console.timeEnd('drilling down');\n\n return this.tiles[id] ? transform(this.tiles[id], extent) : null;\n }\n}\n\nfunction toID(z, x, y) {\n return (((1 << z) * y + x) * 32) + z;\n}\n\nfunction extend(dest, src) {\n for (const i in src) dest[i] = src[i];\n return dest;\n}\n\nexport default function geojsonvt(data, options) {\n return new GeoJSONVT(data, options);\n}\n","/**\n * A way to identify a feature, either by string or by number\n */\nexport type GeoJSONFeatureId = number | string;\n\n/**\n * The geojson source diff object\n */\nexport type GeoJSONSourceDiff = {\n /**\n * When set to `true` it will remove all features\n */\n removeAll?: boolean;\n /**\n * An array of features IDs to remove\n */\n remove?: Array;\n /**\n * An array of features to add\n */\n add?: Array;\n /**\n * An array of update objects\n */\n update?: Array;\n}\n\n/**\n * A geojson feature diff object\n */\nexport type GeoJSONFeatureDiff = {\n /**\n * The feature ID\n */\n id: GeoJSONFeatureId;\n /**\n * If it's a new geometry, place it here\n */\n newGeometry?: GeoJSON.Geometry;\n /**\n * Setting to `true` will remove all preperties\n */\n removeAllProperties?: boolean;\n /**\n * The properties keys to remove\n */\n removeProperties?: Array;\n /**\n * The properties to add or update along side their values\n */\n addOrUpdateProperties?: Array<{key: string; value: any}>;\n}\n\nexport type UpdateableGeoJSON = GeoJSON.Feature | GeoJSON.FeatureCollection | undefined;\n\nfunction getFeatureId(feature: GeoJSON.Feature, promoteId?: string): GeoJSONFeatureId | undefined {\n return promoteId ? feature.properties[promoteId] : feature.id;\n}\n\nexport function isUpdateableGeoJSON(data: GeoJSON.GeoJSON | undefined, promoteId?: string): data is UpdateableGeoJSON {\n // null can be updated\n if (data == null) {\n return true;\n }\n\n // a single feature with an id can be updated, need to explicitly check against null because 0 is a valid feature id that is falsy\n if (data.type === 'Feature') {\n return getFeatureId(data, promoteId) != null;\n }\n\n // a feature collection can be updated if every feature has an id, and the ids are all unique\n // this prevents us from silently dropping features if ids get reused\n if (data.type === 'FeatureCollection') {\n const seenIds = new Set();\n for (const feature of data.features) {\n const id = getFeatureId(feature, promoteId);\n if (id == null) {\n return false;\n }\n\n if (seenIds.has(id)) {\n return false;\n }\n\n seenIds.add(id);\n }\n\n return true;\n }\n\n return false;\n}\n\nexport function toUpdateable(data: UpdateableGeoJSON, promoteId?: string) {\n const result = new Map();\n if (data == null) {\n // empty result\n } else if (data.type === 'Feature') {\n result.set(getFeatureId(data, promoteId)!, data);\n } else {\n for (const feature of data.features) {\n result.set(getFeatureId(feature, promoteId)!, feature);\n }\n }\n\n return result;\n}\n\n// mutates updateable\nexport function applySourceDiff(updateable: Map, diff: GeoJSONSourceDiff, promoteId?: string): void {\n if (diff.removeAll) {\n updateable.clear();\n }\n\n if (diff.remove) {\n for (const id of diff.remove) {\n updateable.delete(id);\n }\n }\n\n if (diff.add) {\n for (const feature of diff.add) {\n const id = getFeatureId(feature, promoteId);\n\n if (id != null) {\n updateable.set(id, feature);\n }\n }\n }\n\n if (diff.update) {\n for (const update of diff.update) {\n let feature = updateable.get(update.id);\n\n if (feature == null) {\n continue;\n }\n\n // be careful to clone the feature and/or properties objects to avoid mutating our input\n const cloneFeature = update.newGeometry || update.removeAllProperties;\n // note: removeAllProperties gives us a new properties object, so we can skip the clone step\n const cloneProperties = !update.removeAllProperties && (update.removeProperties?.length > 0 || update.addOrUpdateProperties?.length > 0);\n if (cloneFeature || cloneProperties) {\n feature = {...feature};\n updateable.set(update.id, feature);\n if (cloneProperties) {\n feature.properties = {...feature.properties};\n }\n }\n\n if (update.newGeometry) {\n feature.geometry = update.newGeometry;\n }\n\n if (update.removeAllProperties) {\n feature.properties = {};\n } else if (update.removeProperties?.length > 0) {\n for (const prop of update.removeProperties) {\n if (Object.prototype.hasOwnProperty.call(feature.properties, prop)) {\n delete feature.properties[prop];\n }\n }\n }\n\n if (update.addOrUpdateProperties?.length > 0) {\n for (const {key, value} of update.addOrUpdateProperties) {\n feature.properties[key] = value;\n }\n }\n }\n }\n}\n","import {getJSON} from '../util/ajax';\nimport {RequestPerformance} from '../util/performance';\nimport rewind from '@mapbox/geojson-rewind';\nimport {GeoJSONWrapper} from './geojson_wrapper';\nimport vtpbf from 'vt-pbf';\nimport Supercluster, {type Options as SuperclusterOptions, type ClusterProperties} from 'supercluster';\nimport geojsonvt, {type Options as GeoJSONVTOptions} from 'geojson-vt';\nimport {VectorTileWorkerSource} from './vector_tile_worker_source';\nimport {createExpression} from '@maplibre/maplibre-gl-style-spec';\nimport {isAbortError} from '../util/abort_error';\n\nimport type {\n WorkerTileParameters,\n WorkerTileResult,\n} from '../source/worker_source';\n\nimport type {LoadVectorTileResult} from './vector_tile_worker_source';\nimport type {RequestParameters} from '../util/ajax';\nimport {isUpdateableGeoJSON, type GeoJSONSourceDiff, applySourceDiff, toUpdateable, type GeoJSONFeatureId} from './geojson_source_diff';\nimport type {ClusterIDAndSource, GeoJSONWorkerSourceLoadDataResult, RemoveSourceParams} from '../util/actor_messages';\n\n/**\n * The geojson worker options that can be passed to the worker\n */\nexport type GeoJSONWorkerOptions = {\n source?: string;\n cluster?: boolean;\n geojsonVtOptions?: GeoJSONVTOptions;\n superclusterOptions?: SuperclusterOptions;\n clusterProperties?: ClusterProperties;\n filter?: Array;\n promoteId?: string;\n collectResourceTiming?: boolean;\n}\n\n/**\n * Parameters needed to load a geojson to the worker\n */\nexport type LoadGeoJSONParameters = GeoJSONWorkerOptions & {\n type: 'geojson';\n request?: RequestParameters;\n /**\n * Literal GeoJSON data. Must be provided if `request.url` is not.\n */\n data?: string;\n dataDiff?: GeoJSONSourceDiff;\n};\n\nexport type LoadGeoJSON = (params: LoadGeoJSONParameters, abortController: AbortController) => Promise;\n\ntype GeoJSONIndex = ReturnType | Supercluster;\n\n/**\n * The {@link WorkerSource} implementation that supports {@link GeoJSONSource}.\n * This class is designed to be easily reused to support custom source types\n * for data formats that can be parsed/converted into an in-memory GeoJSON\n * representation. To do so, create it with\n * `new GeoJSONWorkerSource(actor, layerIndex, customLoadGeoJSONFunction)`.\n * For a full example, see [mapbox-gl-topojson](https://github.com/developmentseed/mapbox-gl-topojson).\n */\nexport class GeoJSONWorkerSource extends VectorTileWorkerSource {\n /**\n * The actual GeoJSON takes some time to load (as there may be a need to parse a diff, or to apply filters, or the\n * data may even need to be loaded via a URL). This promise resolves with a ready-to-be-consumed GeoJSON which is\n * ready to be returned by the `getData` method.\n */\n _pendingData: Promise;\n _pendingRequest: AbortController;\n _geoJSONIndex: GeoJSONIndex;\n _dataUpdateable = new Map();\n\n override async loadVectorTile(params: WorkerTileParameters, _abortController: AbortController): Promise {\n const canonical = params.tileID.canonical;\n\n if (!this._geoJSONIndex) {\n throw new Error('Unable to parse the data into a cluster or geojson');\n }\n\n const geoJSONTile = this._geoJSONIndex.getTile(canonical.z, canonical.x, canonical.y);\n if (!geoJSONTile) {\n return null;\n }\n\n const geojsonWrapper = new GeoJSONWrapper(geoJSONTile.features);\n // Encode the geojson-vt tile into binary vector tile form. This\n // is a convenience that allows `FeatureIndex` to operate the same way\n // across `VectorTileSource` and `GeoJSONSource` data.\n let pbf = vtpbf(geojsonWrapper);\n if (pbf.byteOffset !== 0 || pbf.byteLength !== pbf.buffer.byteLength) {\n // Compatibility with node Buffer (https://github.com/mapbox/pbf/issues/35)\n pbf = new Uint8Array(pbf);\n }\n\n return {\n vectorTile: geojsonWrapper,\n rawData: pbf.buffer\n };\n }\n\n /**\n * Fetches (if appropriate), parses, and index geojson data into tiles. This\n * preparatory method must be called before {@link GeoJSONWorkerSource#loadTile}\n * can correctly serve up tiles.\n *\n * Defers to {@link GeoJSONWorkerSource#loadAndProcessGeoJSON} for the pre-processing.\n *\n * When a `loadData` request comes in while a previous one is being processed,\n * the previous one is aborted.\n *\n * @param params - the parameters\n * @returns a promise that resolves when the data is loaded and parsed into a GeoJSON object\n */\n async loadData(params: LoadGeoJSONParameters): Promise {\n this._pendingRequest?.abort();\n const perf = (params && params.request && params.request.collectResourceTiming) ?\n new RequestPerformance(params.request) : false;\n\n this._pendingRequest = new AbortController();\n try {\n this._pendingData = this.loadAndProcessGeoJSON(params, this._pendingRequest);\n\n this._geoJSONIndex = params.cluster ?\n new Supercluster(getSuperclusterOptions(params)).load((await this._pendingData as any).features) :\n geojsonvt(await this._pendingData, params.geojsonVtOptions);\n\n this.loaded = {};\n\n const result = {} as GeoJSONWorkerSourceLoadDataResult;\n if (perf) {\n const resourceTimingData = perf.finish();\n // it's necessary to eval the result of getEntriesByName() here via parse/stringify\n // late evaluation in the main thread causes TypeError: illegal invocation\n if (resourceTimingData) {\n result.resourceTiming = {};\n result.resourceTiming[params.source] = JSON.parse(JSON.stringify(resourceTimingData));\n }\n }\n return result;\n } catch (err) {\n delete this._pendingRequest;\n if (isAbortError(err)) {\n return {abandoned: true};\n }\n throw err;\n }\n }\n\n /**\n * Allows to get the source's actual GeoJSON.\n *\n * @returns a promise which is resolved with the source's actual GeoJSON\n */\n async getData(): Promise {\n return this._pendingData;\n }\n\n /**\n * Implements {@link WorkerSource#reloadTile}.\n *\n * If the tile is loaded, uses the implementation in VectorTileWorkerSource.\n * Otherwise, such as after a setData() call, we load the tile fresh.\n *\n * @param params - the parameters\n * @returns A promise that resolves when the tile is reloaded\n */\n reloadTile(params: WorkerTileParameters): Promise {\n const loaded = this.loaded,\n uid = params.uid;\n\n if (loaded && loaded[uid]) {\n return super.reloadTile(params);\n } else {\n return this.loadTile(params);\n }\n }\n\n /**\n * Fetch, parse and process GeoJSON according to the given params.\n *\n * Defers to {@link GeoJSONWorkerSource#loadGeoJSON} for the fetching and parsing.\n *\n * @param params - the parameters\n * @param abortController - the abort controller that allows aborting this operation\n * @returns a promise that is resolved with the processes GeoJSON\n */\n async loadAndProcessGeoJSON(params: LoadGeoJSONParameters, abortController: AbortController): Promise {\n let data = await this.loadGeoJSON(params, abortController);\n\n delete this._pendingRequest;\n if (typeof data !== 'object') {\n throw new Error(`Input data given to '${params.source}' is not a valid GeoJSON object.`);\n }\n rewind(data, true);\n\n if (params.filter) {\n const compiled = createExpression(params.filter, {type: 'boolean', 'property-type': 'data-driven', overridable: false, transition: false} as any);\n if (compiled.result === 'error')\n throw new Error(compiled.value.map(err => `${err.key}: ${err.message}`).join(', '));\n\n const features = (data as any).features.filter(feature => compiled.value.evaluate({zoom: 0}, feature));\n data = {type: 'FeatureCollection', features};\n }\n\n return data;\n }\n\n /**\n * Fetch and parse GeoJSON according to the given params.\n *\n * GeoJSON is loaded and parsed from `params.url` if it exists, or else\n * expected as a literal (string or object) `params.data`.\n *\n * @param params - the parameters\n * @param abortController - the abort controller that allows aborting this operation\n * @returns a promise that resolves when the data is loaded\n */\n async loadGeoJSON(params: LoadGeoJSONParameters, abortController: AbortController): Promise {\n const {promoteId} = params;\n if (params.request) {\n const response = await getJSON(params.request, abortController);\n this._dataUpdateable = isUpdateableGeoJSON(response.data, promoteId) ? toUpdateable(response.data, promoteId) : undefined;\n return response.data;\n }\n if (typeof params.data === 'string') {\n try {\n const parsed = JSON.parse(params.data);\n this._dataUpdateable = isUpdateableGeoJSON(parsed, promoteId) ? toUpdateable(parsed, promoteId) : undefined;\n return parsed;\n } catch {\n throw new Error(`Input data given to '${params.source}' is not a valid GeoJSON object.`);\n }\n }\n if (!params.dataDiff) {\n throw new Error(`Input data given to '${params.source}' is not a valid GeoJSON object.`);\n }\n if (!this._dataUpdateable) {\n throw new Error(`Cannot update existing geojson data in ${params.source}`);\n }\n applySourceDiff(this._dataUpdateable, params.dataDiff, promoteId);\n return {type: 'FeatureCollection', features: Array.from(this._dataUpdateable.values())};\n }\n\n async removeSource(_params: RemoveSourceParams): Promise {\n if (this._pendingRequest) {\n this._pendingRequest.abort();\n }\n }\n\n getClusterExpansionZoom(params: ClusterIDAndSource): number {\n return (this._geoJSONIndex as Supercluster).getClusterExpansionZoom(params.clusterId);\n }\n\n getClusterChildren(params: ClusterIDAndSource): Array {\n return (this._geoJSONIndex as Supercluster).getChildren(params.clusterId);\n }\n\n getClusterLeaves(params: {\n clusterId: number;\n limit: number;\n offset: number;\n }): Array {\n return (this._geoJSONIndex as Supercluster).getLeaves(params.clusterId, params.limit, params.offset);\n }\n}\n\nfunction getSuperclusterOptions({superclusterOptions, clusterProperties}: LoadGeoJSONParameters) {\n if (!clusterProperties || !superclusterOptions) return superclusterOptions;\n\n const mapExpressions = {};\n const reduceExpressions = {};\n const globals = {accumulated: null, zoom: 0};\n const feature = {properties: null};\n const propertyNames = Object.keys(clusterProperties);\n\n for (const key of propertyNames) {\n const [operator, mapExpression] = clusterProperties[key];\n\n const mapExpressionParsed = createExpression(mapExpression);\n const reduceExpressionParsed = createExpression(\n typeof operator === 'string' ? [operator, ['accumulated'], ['get', key]] : operator);\n\n mapExpressions[key] = mapExpressionParsed.value;\n reduceExpressions[key] = reduceExpressionParsed.value;\n }\n\n superclusterOptions.map = (pointProperties) => {\n feature.properties = pointProperties;\n const properties = {};\n for (const key of propertyNames) {\n properties[key] = mapExpressions[key].evaluate(globals, feature);\n }\n return properties;\n };\n superclusterOptions.reduce = (accumulated, clusterProperties) => {\n feature.properties = clusterProperties;\n for (const key of propertyNames) {\n globals.accumulated = accumulated[key];\n accumulated[key] = reduceExpressions[key].evaluate(globals, feature);\n }\n };\n\n return superclusterOptions;\n}\n","import {Actor, type ActorTarget, type IActor} from '../util/actor';\nimport {StyleLayerIndex} from '../style/style_layer_index';\nimport {VectorTileWorkerSource} from './vector_tile_worker_source';\nimport {RasterDEMTileWorkerSource} from './raster_dem_tile_worker_source';\nimport {rtlWorkerPlugin, type RTLTextPlugin} from './rtl_text_plugin_worker';\nimport {GeoJSONWorkerSource, type LoadGeoJSONParameters} from './geojson_worker_source';\nimport {isWorker} from '../util/util';\nimport {addProtocol, removeProtocol} from './protocol_crud';\nimport {type PluginState} from './rtl_text_plugin_status';\nimport type {\n WorkerSource,\n WorkerSourceConstructor,\n WorkerTileParameters,\n WorkerDEMTileParameters,\n TileParameters\n} from '../source/worker_source';\n\nimport type {WorkerGlobalScopeInterface} from '../util/web_worker';\nimport type {LayerSpecification} from '@maplibre/maplibre-gl-style-spec';\nimport {\n MessageType,\n type ClusterIDAndSource,\n type GetClusterLeavesParams,\n type RemoveSourceParams,\n type UpdateLayersParamaeters\n} from '../util/actor_messages';\n\n/**\n * The Worker class responsible for background thread related execution\n */\nexport default class Worker {\n self: WorkerGlobalScopeInterface & ActorTarget;\n actor: Actor;\n layerIndexes: {[_: string]: StyleLayerIndex};\n availableImages: {[_: string]: Array};\n externalWorkerSourceTypes: { [_: string]: WorkerSourceConstructor };\n /**\n * This holds a cache for the already created worker source instances.\n * The cache is build with the following hierarchy:\n * [mapId][sourceType][sourceName]: worker source instance\n * sourceType can be 'vector' for example\n */\n workerSources: {\n [_: string]: {\n [_: string]: {\n [_: string]: WorkerSource;\n };\n };\n };\n /**\n * This holds a cache for the already created DEM worker source instances.\n * The cache is build with the following hierarchy:\n * [mapId][sourceType]: DEM worker source instance\n * sourceType can be 'raster-dem' for example\n */\n demWorkerSources: {\n [_: string]: {\n [_: string]: RasterDEMTileWorkerSource;\n };\n };\n referrer: string;\n\n constructor(self: WorkerGlobalScopeInterface & ActorTarget) {\n this.self = self;\n this.actor = new Actor(self);\n\n this.layerIndexes = {};\n this.availableImages = {};\n\n this.workerSources = {};\n this.demWorkerSources = {};\n this.externalWorkerSourceTypes = {};\n\n this.self.registerWorkerSource = (name: string, WorkerSource: WorkerSourceConstructor) => {\n if (this.externalWorkerSourceTypes[name]) {\n throw new Error(`Worker source with name \"${name}\" already registered.`);\n }\n this.externalWorkerSourceTypes[name] = WorkerSource;\n };\n\n this.self.addProtocol = addProtocol;\n this.self.removeProtocol = removeProtocol;\n\n // This is invoked by the RTL text plugin when the download via the `importScripts` call has finished, and the code has been parsed.\n this.self.registerRTLTextPlugin = (rtlTextPlugin: RTLTextPlugin) => {\n\n rtlWorkerPlugin.setMethods(rtlTextPlugin);\n };\n\n this.actor.registerMessageHandler(MessageType.loadDEMTile, (mapId: string, params: WorkerDEMTileParameters) => {\n return this._getDEMWorkerSource(mapId, params.source).loadTile(params);\n });\n\n this.actor.registerMessageHandler(MessageType.removeDEMTile, async (mapId: string, params: TileParameters) => {\n this._getDEMWorkerSource(mapId, params.source).removeTile(params);\n });\n\n this.actor.registerMessageHandler(MessageType.getClusterExpansionZoom, async (mapId: string, params: ClusterIDAndSource) => {\n return (this._getWorkerSource(mapId, params.type, params.source) as GeoJSONWorkerSource).getClusterExpansionZoom(params);\n });\n\n this.actor.registerMessageHandler(MessageType.getClusterChildren, async (mapId: string, params: ClusterIDAndSource) => {\n return (this._getWorkerSource(mapId, params.type, params.source) as GeoJSONWorkerSource).getClusterChildren(params);\n });\n\n this.actor.registerMessageHandler(MessageType.getClusterLeaves, async (mapId: string, params: GetClusterLeavesParams) => {\n return (this._getWorkerSource(mapId, params.type, params.source) as GeoJSONWorkerSource).getClusterLeaves(params);\n });\n\n this.actor.registerMessageHandler(MessageType.loadData, (mapId: string, params: LoadGeoJSONParameters) => {\n return (this._getWorkerSource(mapId, params.type, params.source) as GeoJSONWorkerSource).loadData(params);\n });\n\n this.actor.registerMessageHandler(MessageType.getData, (mapId: string, params: LoadGeoJSONParameters) => {\n return (this._getWorkerSource(mapId, params.type, params.source) as GeoJSONWorkerSource).getData();\n });\n\n this.actor.registerMessageHandler(MessageType.loadTile, (mapId: string, params: WorkerTileParameters) => {\n return this._getWorkerSource(mapId, params.type, params.source).loadTile(params);\n });\n\n this.actor.registerMessageHandler(MessageType.reloadTile, (mapId: string, params: WorkerTileParameters) => {\n return this._getWorkerSource(mapId, params.type, params.source).reloadTile(params);\n });\n\n this.actor.registerMessageHandler(MessageType.abortTile, (mapId: string, params: TileParameters) => {\n return this._getWorkerSource(mapId, params.type, params.source).abortTile(params);\n });\n\n this.actor.registerMessageHandler(MessageType.removeTile, (mapId: string, params: TileParameters) => {\n return this._getWorkerSource(mapId, params.type, params.source).removeTile(params);\n });\n\n this.actor.registerMessageHandler(MessageType.removeSource, async (mapId: string, params: RemoveSourceParams) => {\n if (!this.workerSources[mapId] ||\n !this.workerSources[mapId][params.type] ||\n !this.workerSources[mapId][params.type][params.source]) {\n return;\n }\n\n const worker = this.workerSources[mapId][params.type][params.source];\n delete this.workerSources[mapId][params.type][params.source];\n\n if (worker.removeSource !== undefined) {\n worker.removeSource(params);\n }\n });\n\n this.actor.registerMessageHandler(MessageType.removeMap, async (mapId: string) => {\n delete this.layerIndexes[mapId];\n delete this.availableImages[mapId];\n delete this.workerSources[mapId];\n delete this.demWorkerSources[mapId];\n });\n\n this.actor.registerMessageHandler(MessageType.setReferrer, async (_mapId: string, params: string) => {\n this.referrer = params;\n });\n\n this.actor.registerMessageHandler(MessageType.syncRTLPluginState, (mapId: string, params: PluginState) => {\n return this._syncRTLPluginState(mapId, params);\n });\n\n this.actor.registerMessageHandler(MessageType.importScript, async (_mapId: string, params: string) => {\n this.self.importScripts(params);\n });\n\n this.actor.registerMessageHandler(MessageType.setImages, (mapId: string, params: string[]) => {\n return this._setImages(mapId, params);\n });\n\n this.actor.registerMessageHandler(MessageType.updateLayers, async (mapId: string, params: UpdateLayersParamaeters) => {\n this._getLayerIndex(mapId).update(params.layers, params.removedIds);\n });\n\n this.actor.registerMessageHandler(MessageType.setLayers, async (mapId: string, params: Array) => {\n this._getLayerIndex(mapId).replace(params);\n });\n }\n\n private async _setImages(mapId: string, images: Array): Promise {\n this.availableImages[mapId] = images;\n for (const workerSource in this.workerSources[mapId]) {\n const ws = this.workerSources[mapId][workerSource];\n for (const source in ws) {\n ws[source].availableImages = images;\n }\n }\n }\n\n private async _syncRTLPluginState(mapId: string, incomingState: PluginState): Promise {\n const state = await rtlWorkerPlugin.syncState(incomingState, this.self.importScripts);\n return state;\n }\n\n private _getAvailableImages(mapId: string) {\n let availableImages = this.availableImages[mapId];\n\n if (!availableImages) {\n availableImages = [];\n }\n\n return availableImages;\n }\n\n private _getLayerIndex(mapId: string) {\n let layerIndexes = this.layerIndexes[mapId];\n if (!layerIndexes) {\n layerIndexes = this.layerIndexes[mapId] = new StyleLayerIndex();\n }\n return layerIndexes;\n }\n\n /**\n * This is basically a lazy initialization of a worker per mapId and sourceType and sourceName\n * @param mapId - the mapId\n * @param sourceType - the source type - 'vector' for example\n * @param sourceName - the source name - 'osm' for example\n * @returns a new instance or a cached one\n */\n private _getWorkerSource(mapId: string, sourceType: string, sourceName: string): WorkerSource {\n if (!this.workerSources[mapId])\n this.workerSources[mapId] = {};\n if (!this.workerSources[mapId][sourceType])\n this.workerSources[mapId][sourceType] = {};\n\n if (!this.workerSources[mapId][sourceType][sourceName]) {\n // use a wrapped actor so that we can attach a target mapId param\n // to any messages invoked by the WorkerSource, this is very important when there are multiple maps\n const actor: IActor = {\n sendAsync: (message, abortController) => {\n message.targetMapId = mapId;\n return this.actor.sendAsync(message, abortController);\n }\n };\n switch (sourceType) {\n case 'vector':\n this.workerSources[mapId][sourceType][sourceName] = new VectorTileWorkerSource(actor, this._getLayerIndex(mapId), this._getAvailableImages(mapId));\n break;\n case 'geojson':\n this.workerSources[mapId][sourceType][sourceName] = new GeoJSONWorkerSource(actor, this._getLayerIndex(mapId), this._getAvailableImages(mapId));\n break;\n default:\n this.workerSources[mapId][sourceType][sourceName] = new (this.externalWorkerSourceTypes[sourceType])(actor, this._getLayerIndex(mapId), this._getAvailableImages(mapId));\n break;\n }\n }\n\n return this.workerSources[mapId][sourceType][sourceName];\n }\n\n /**\n * This is basically a lazy initialization of a worker per mapId and source\n * @param mapId - the mapId\n * @param sourceType - the source type - 'raster-dem' for example\n * @returns a new instance or a cached one\n */\n private _getDEMWorkerSource(mapId: string, sourceType: string) {\n if (!this.demWorkerSources[mapId])\n this.demWorkerSources[mapId] = {};\n\n if (!this.demWorkerSources[mapId][sourceType]) {\n this.demWorkerSources[mapId][sourceType] = new RasterDEMTileWorkerSource();\n }\n\n return this.demWorkerSources[mapId][sourceType];\n }\n}\n\nif (isWorker(self)) {\n self.worker = new Worker(self);\n}\n","import * as glMatrix from \"./common.js\";\n/**\n * 2x2 Matrix\n * @module mat2\n */\n\n/**\n * Creates a new identity mat2\n *\n * @returns {mat2} a new 2x2 matrix\n */\n\nexport function create() {\n var out = new glMatrix.ARRAY_TYPE(4);\n\n if (glMatrix.ARRAY_TYPE != Float32Array) {\n out[1] = 0;\n out[2] = 0;\n }\n\n out[0] = 1;\n out[3] = 1;\n return out;\n}\n/**\n * Creates a new mat2 initialized with values from an existing matrix\n *\n * @param {ReadonlyMat2} a matrix to clone\n * @returns {mat2} a new 2x2 matrix\n */\n\nexport function clone(a) {\n var out = new glMatrix.ARRAY_TYPE(4);\n out[0] = a[0];\n out[1] = a[1];\n out[2] = a[2];\n out[3] = a[3];\n return out;\n}\n/**\n * Copy the values from one mat2 to another\n *\n * @param {mat2} out the receiving matrix\n * @param {ReadonlyMat2} a the source matrix\n * @returns {mat2} out\n */\n\nexport function copy(out, a) {\n out[0] = a[0];\n out[1] = a[1];\n out[2] = a[2];\n out[3] = a[3];\n return out;\n}\n/**\n * Set a mat2 to the identity matrix\n *\n * @param {mat2} out the receiving matrix\n * @returns {mat2} out\n */\n\nexport function identity(out) {\n out[0] = 1;\n out[1] = 0;\n out[2] = 0;\n out[3] = 1;\n return out;\n}\n/**\n * Create a new mat2 with the given values\n *\n * @param {Number} m00 Component in column 0, row 0 position (index 0)\n * @param {Number} m01 Component in column 0, row 1 position (index 1)\n * @param {Number} m10 Component in column 1, row 0 position (index 2)\n * @param {Number} m11 Component in column 1, row 1 position (index 3)\n * @returns {mat2} out A new 2x2 matrix\n */\n\nexport function fromValues(m00, m01, m10, m11) {\n var out = new glMatrix.ARRAY_TYPE(4);\n out[0] = m00;\n out[1] = m01;\n out[2] = m10;\n out[3] = m11;\n return out;\n}\n/**\n * Set the components of a mat2 to the given values\n *\n * @param {mat2} out the receiving matrix\n * @param {Number} m00 Component in column 0, row 0 position (index 0)\n * @param {Number} m01 Component in column 0, row 1 position (index 1)\n * @param {Number} m10 Component in column 1, row 0 position (index 2)\n * @param {Number} m11 Component in column 1, row 1 position (index 3)\n * @returns {mat2} out\n */\n\nexport function set(out, m00, m01, m10, m11) {\n out[0] = m00;\n out[1] = m01;\n out[2] = m10;\n out[3] = m11;\n return out;\n}\n/**\n * Transpose the values of a mat2\n *\n * @param {mat2} out the receiving matrix\n * @param {ReadonlyMat2} a the source matrix\n * @returns {mat2} out\n */\n\nexport function transpose(out, a) {\n // If we are transposing ourselves we can skip a few steps but have to cache\n // some values\n if (out === a) {\n var a1 = a[1];\n out[1] = a[2];\n out[2] = a1;\n } else {\n out[0] = a[0];\n out[1] = a[2];\n out[2] = a[1];\n out[3] = a[3];\n }\n\n return out;\n}\n/**\n * Inverts a mat2\n *\n * @param {mat2} out the receiving matrix\n * @param {ReadonlyMat2} a the source matrix\n * @returns {mat2} out\n */\n\nexport function invert(out, a) {\n var a0 = a[0],\n a1 = a[1],\n a2 = a[2],\n a3 = a[3]; // Calculate the determinant\n\n var det = a0 * a3 - a2 * a1;\n\n if (!det) {\n return null;\n }\n\n det = 1.0 / det;\n out[0] = a3 * det;\n out[1] = -a1 * det;\n out[2] = -a2 * det;\n out[3] = a0 * det;\n return out;\n}\n/**\n * Calculates the adjugate of a mat2\n *\n * @param {mat2} out the receiving matrix\n * @param {ReadonlyMat2} a the source matrix\n * @returns {mat2} out\n */\n\nexport function adjoint(out, a) {\n // Caching this value is nessecary if out == a\n var a0 = a[0];\n out[0] = a[3];\n out[1] = -a[1];\n out[2] = -a[2];\n out[3] = a0;\n return out;\n}\n/**\n * Calculates the determinant of a mat2\n *\n * @param {ReadonlyMat2} a the source matrix\n * @returns {Number} determinant of a\n */\n\nexport function determinant(a) {\n return a[0] * a[3] - a[2] * a[1];\n}\n/**\n * Multiplies two mat2's\n *\n * @param {mat2} out the receiving matrix\n * @param {ReadonlyMat2} a the first operand\n * @param {ReadonlyMat2} b the second operand\n * @returns {mat2} out\n */\n\nexport function multiply(out, a, b) {\n var a0 = a[0],\n a1 = a[1],\n a2 = a[2],\n a3 = a[3];\n var b0 = b[0],\n b1 = b[1],\n b2 = b[2],\n b3 = b[3];\n out[0] = a0 * b0 + a2 * b1;\n out[1] = a1 * b0 + a3 * b1;\n out[2] = a0 * b2 + a2 * b3;\n out[3] = a1 * b2 + a3 * b3;\n return out;\n}\n/**\n * Rotates a mat2 by the given angle\n *\n * @param {mat2} out the receiving matrix\n * @param {ReadonlyMat2} a the matrix to rotate\n * @param {Number} rad the angle to rotate the matrix by\n * @returns {mat2} out\n */\n\nexport function rotate(out, a, rad) {\n var a0 = a[0],\n a1 = a[1],\n a2 = a[2],\n a3 = a[3];\n var s = Math.sin(rad);\n var c = Math.cos(rad);\n out[0] = a0 * c + a2 * s;\n out[1] = a1 * c + a3 * s;\n out[2] = a0 * -s + a2 * c;\n out[3] = a1 * -s + a3 * c;\n return out;\n}\n/**\n * Scales the mat2 by the dimensions in the given vec2\n *\n * @param {mat2} out the receiving matrix\n * @param {ReadonlyMat2} a the matrix to rotate\n * @param {ReadonlyVec2} v the vec2 to scale the matrix by\n * @returns {mat2} out\n **/\n\nexport function scale(out, a, v) {\n var a0 = a[0],\n a1 = a[1],\n a2 = a[2],\n a3 = a[3];\n var v0 = v[0],\n v1 = v[1];\n out[0] = a0 * v0;\n out[1] = a1 * v0;\n out[2] = a2 * v1;\n out[3] = a3 * v1;\n return out;\n}\n/**\n * Creates a matrix from a given angle\n * This is equivalent to (but much faster than):\n *\n * mat2.identity(dest);\n * mat2.rotate(dest, dest, rad);\n *\n * @param {mat2} out mat2 receiving operation result\n * @param {Number} rad the angle to rotate the matrix by\n * @returns {mat2} out\n */\n\nexport function fromRotation(out, rad) {\n var s = Math.sin(rad);\n var c = Math.cos(rad);\n out[0] = c;\n out[1] = s;\n out[2] = -s;\n out[3] = c;\n return out;\n}\n/**\n * Creates a matrix from a vector scaling\n * This is equivalent to (but much faster than):\n *\n * mat2.identity(dest);\n * mat2.scale(dest, dest, vec);\n *\n * @param {mat2} out mat2 receiving operation result\n * @param {ReadonlyVec2} v Scaling vector\n * @returns {mat2} out\n */\n\nexport function fromScaling(out, v) {\n out[0] = v[0];\n out[1] = 0;\n out[2] = 0;\n out[3] = v[1];\n return out;\n}\n/**\n * Returns a string representation of a mat2\n *\n * @param {ReadonlyMat2} a matrix to represent as a string\n * @returns {String} string representation of the matrix\n */\n\nexport function str(a) {\n return \"mat2(\" + a[0] + \", \" + a[1] + \", \" + a[2] + \", \" + a[3] + \")\";\n}\n/**\n * Returns Frobenius norm of a mat2\n *\n * @param {ReadonlyMat2} a the matrix to calculate Frobenius norm of\n * @returns {Number} Frobenius norm\n */\n\nexport function frob(a) {\n return Math.hypot(a[0], a[1], a[2], a[3]);\n}\n/**\n * Returns L, D and U matrices (Lower triangular, Diagonal and Upper triangular) by factorizing the input matrix\n * @param {ReadonlyMat2} L the lower triangular matrix\n * @param {ReadonlyMat2} D the diagonal matrix\n * @param {ReadonlyMat2} U the upper triangular matrix\n * @param {ReadonlyMat2} a the input matrix to factorize\n */\n\nexport function LDU(L, D, U, a) {\n L[2] = a[2] / a[0];\n U[0] = a[0];\n U[1] = a[1];\n U[3] = a[3] - L[2] * U[1];\n return [L, D, U];\n}\n/**\n * Adds two mat2's\n *\n * @param {mat2} out the receiving matrix\n * @param {ReadonlyMat2} a the first operand\n * @param {ReadonlyMat2} b the second operand\n * @returns {mat2} out\n */\n\nexport function add(out, a, b) {\n out[0] = a[0] + b[0];\n out[1] = a[1] + b[1];\n out[2] = a[2] + b[2];\n out[3] = a[3] + b[3];\n return out;\n}\n/**\n * Subtracts matrix b from matrix a\n *\n * @param {mat2} out the receiving matrix\n * @param {ReadonlyMat2} a the first operand\n * @param {ReadonlyMat2} b the second operand\n * @returns {mat2} out\n */\n\nexport function subtract(out, a, b) {\n out[0] = a[0] - b[0];\n out[1] = a[1] - b[1];\n out[2] = a[2] - b[2];\n out[3] = a[3] - b[3];\n return out;\n}\n/**\n * Returns whether or not the matrices have exactly the same elements in the same position (when compared with ===)\n *\n * @param {ReadonlyMat2} a The first matrix.\n * @param {ReadonlyMat2} b The second matrix.\n * @returns {Boolean} True if the matrices are equal, false otherwise.\n */\n\nexport function exactEquals(a, b) {\n return a[0] === b[0] && a[1] === b[1] && a[2] === b[2] && a[3] === b[3];\n}\n/**\n * Returns whether or not the matrices have approximately the same elements in the same position.\n *\n * @param {ReadonlyMat2} a The first matrix.\n * @param {ReadonlyMat2} b The second matrix.\n * @returns {Boolean} True if the matrices are equal, false otherwise.\n */\n\nexport function equals(a, b) {\n var a0 = a[0],\n a1 = a[1],\n a2 = a[2],\n a3 = a[3];\n var b0 = b[0],\n b1 = b[1],\n b2 = b[2],\n b3 = b[3];\n return Math.abs(a0 - b0) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a0), Math.abs(b0)) && Math.abs(a1 - b1) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a1), Math.abs(b1)) && Math.abs(a2 - b2) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a2), Math.abs(b2)) && Math.abs(a3 - b3) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a3), Math.abs(b3));\n}\n/**\n * Multiply each element of the matrix by a scalar.\n *\n * @param {mat2} out the receiving matrix\n * @param {ReadonlyMat2} a the matrix to scale\n * @param {Number} b amount to scale the matrix's elements by\n * @returns {mat2} out\n */\n\nexport function multiplyScalar(out, a, b) {\n out[0] = a[0] * b;\n out[1] = a[1] * b;\n out[2] = a[2] * b;\n out[3] = a[3] * b;\n return out;\n}\n/**\n * Adds two mat2's after multiplying each element of the second operand by a scalar value.\n *\n * @param {mat2} out the receiving vector\n * @param {ReadonlyMat2} a the first operand\n * @param {ReadonlyMat2} b the second operand\n * @param {Number} scale the amount to scale b's elements by before adding\n * @returns {mat2} out\n */\n\nexport function multiplyScalarAndAdd(out, a, b, scale) {\n out[0] = a[0] + b[0] * scale;\n out[1] = a[1] + b[1] * scale;\n out[2] = a[2] + b[2] * scale;\n out[3] = a[3] + b[3] * scale;\n return out;\n}\n/**\n * Alias for {@link mat2.multiply}\n * @function\n */\n\nexport var mul = multiply;\n/**\n * Alias for {@link mat2.subtract}\n * @function\n */\n\nexport var sub = subtract;","import {MercatorCoordinate} from '../../../src/geo/mercator_coordinate';\nimport {OverscaledTileID} from '../../../src/source/tile_id';\n\nexport type LocationsWithTileID = {\n description: string;\n tileID: OverscaledTileID[];\n zoom: number;\n center: GeoJSON.Position;\n}\n\nexport default function locationsWithTileID(locations: GeoJSON.Feature[]): LocationsWithTileID[] {\n return locations.map(feature => {\n const {coordinates} = feature.geometry;\n const {zoom} = feature.properties;\n const {x, y} = MercatorCoordinate.fromLngLat({\n lng: coordinates[0],\n lat: coordinates[1]\n });\n\n const scale = Math.pow(2, zoom);\n const tileX = Math.floor(x * scale);\n const tileY = Math.floor(y * scale);\n\n return {\n description: feature.properties['place_name'],\n tileID: [new OverscaledTileID(zoom, 0, zoom, tileX, tileY)],\n zoom,\n center: coordinates\n };\n });\n}\n","// According to https://developer.mozilla.org/en-US/docs/Web/API/Performance/now,\n// performance.now() should be accurate to 0.005ms. Set the minimum running\n// time for a single measurement at 5ms, so that the error due to timer\n// precision is < 0.1%.\nconst minTimeForMeasurement = 0.005 * 1000;\n\nexport type Measurement = {\n iterations: number;\n time: number;\n};\n\nclass Benchmark {\n /**\n * The `setup` method is intended to be overridden by subclasses. It will be called once, prior to\n * running any benchmark iterations, and may set state on `this` which the benchmark later accesses.\n * If the setup involves an asynchronous step, `setup` may return a promise.\n */\n setup(): Promise | void {}\n\n /**\n * The `bench` method is intended to be overridden by subclasses. It should contain the code to be\n * benchmarked. It may access state on `this` set by the `setup` function (but should not modify this\n * state). It will be called multiple times, the total number to be determined by the harness. If\n * the benchmark involves an asynchronous step, `bench` may return a promise.\n */\n bench(): Promise | void {}\n\n /**\n * The `teardown` method is intended to be overridden by subclasses. It will be called once, after\n * running all benchmark iterations, and may perform any necessary cleanup. If cleaning up involves\n * an asynchronous step, `teardown` may return a promise.\n */\n teardown(): Promise | void {}\n\n /**\n * The minimum number of measurements affects how many statistical observations can be made on the benchmark e.g,\n * 210 measurement `samples => 20` observations for regression because the sum of 1 to 20 = 210. See regression() in statistics.ts.\n * The minimum number of measurements also affects the runtime: more measurements means a longer running beanchmark.\n */\n public minimumMeasurements = 210;\n\n _elapsed: number;\n _measurements: Array;\n _iterationsPerMeasurement: number;\n _start: number;\n\n /**\n * Run the benchmark by executing `setup` once, sampling the execution time of `bench` some number of\n * times, and then executing `teardown`. Yields an array of execution times.\n */\n async run(): Promise> {\n try {\n await this.setup();\n return this._begin();\n } catch (e) {\n // The bench run will break here but should at least provide helpful information:\n console.error(e);\n }\n }\n\n private _done() {\n return this._elapsed >= 500 && this._measurements.length > this.minimumMeasurements;\n }\n\n private _begin(): Promise> {\n this._measurements = [];\n this._elapsed = 0;\n this._iterationsPerMeasurement = 1;\n this._start = performance.now();\n\n const bench = this.bench();\n if (bench instanceof Promise) {\n return bench.then(() => this._measureAsync());\n } else {\n return this._measureSync();\n }\n }\n\n private _measureSync(): Promise> {\n // Avoid Promise overhead for sync benchmarks.\n while (true) {\n const time = performance.now() - this._start;\n this._elapsed += time;\n if (time < minTimeForMeasurement) {\n this._iterationsPerMeasurement++;\n } else {\n this._measurements.push({time, iterations: this._iterationsPerMeasurement});\n }\n if (this._done()) {\n return this._end();\n }\n this._start = performance.now();\n for (let i = this._iterationsPerMeasurement; i > 0; --i) {\n this.bench();\n }\n }\n }\n\n private async _measureAsync(): Promise> {\n while (true) {\n const time = performance.now() - this._start;\n this._elapsed += time;\n if (time < minTimeForMeasurement) {\n this._iterationsPerMeasurement++;\n } else {\n this._measurements.push({time, iterations: this._iterationsPerMeasurement});\n }\n if (this._done()) {\n return this._end();\n }\n this._start = performance.now();\n for (let i = this._iterationsPerMeasurement; i > 0; --i) {\n await this.bench();\n }\n }\n }\n\n private async _end(): Promise> {\n await this.teardown();\n return this._measurements;\n }\n}\n\nexport default Benchmark;\n","import type {StyleSpecification} from '@maplibre/maplibre-gl-style-spec';\n\nexport default function fetchStyle(value: string | StyleSpecification): Promise {\n return typeof value === 'string' ?\n fetch(value).then(response => response.json()) :\n Promise.resolve(value);\n}\n","export const webpSupported = {\n supported: false,\n testSupport\n};\n\nlet glForTesting: WebGLRenderingContext|WebGL2RenderingContext;\nlet webpCheckComplete = false;\nlet webpImgTest;\nlet webpImgTestOnloadComplete = false;\n\nif (typeof document !== 'undefined') {\n webpImgTest = document.createElement('img');\n webpImgTest.onload = () => {\n if (glForTesting) testWebpTextureUpload(glForTesting);\n glForTesting = null;\n webpImgTestOnloadComplete = true;\n };\n webpImgTest.onerror = () => {\n webpCheckComplete = true;\n glForTesting = null;\n };\n webpImgTest.src = 'data:image/webp;base64,UklGRh4AAABXRUJQVlA4TBEAAAAvAQAAAAfQ//73v/+BiOh/AAA=';\n}\n\nfunction testSupport(gl: WebGLRenderingContext | WebGL2RenderingContext) {\n if (webpCheckComplete || !webpImgTest) return;\n\n // HTMLImageElement.complete is set when an image is done loading it's source\n // regardless of whether the load was successful or not.\n // It's possible for an error to set HTMLImageElement.complete to true which would trigger\n // testWebpTextureUpload and mistakenly set exported.supported to true in browsers which don't support webp\n // To avoid this, we set a flag in the image's onload handler and only call testWebpTextureUpload\n // after a successful image load event.\n if (webpImgTestOnloadComplete) {\n testWebpTextureUpload(gl);\n } else {\n glForTesting = gl;\n\n }\n}\n\nfunction testWebpTextureUpload(gl: WebGLRenderingContext|WebGL2RenderingContext) {\n // Edge 18 supports WebP but not uploading a WebP image to a gl texture\n // Test support for this before allowing WebP images.\n // https://github.com/mapbox/mapbox-gl-js/issues/7671\n const texture = gl.createTexture();\n gl.bindTexture(gl.TEXTURE_2D, texture);\n\n try {\n gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, webpImgTest);\n\n // The error does not get triggered in Edge if the context is lost\n if (gl.isContextLost()) return;\n\n webpSupported.supported = true;\n } catch {\n // Catch \"Unspecified Error.\" in Edge 18.\n }\n\n gl.deleteTexture(texture);\n\n webpCheckComplete = true;\n}\n","import {type RequestParameters, makeRequest, sameOrigin, type GetResourceResponse} from './ajax';\nimport {arrayBufferToImageBitmap, arrayBufferToImage, extend, isWorker, isImageBitmap} from './util';\nimport {webpSupported} from './webp_supported';\nimport {config} from './config';\nimport {createAbortError} from './abort_error';\nimport {getProtocol} from '../source/protocol_crud';\n\ntype ImageQueueThrottleControlCallback = () => boolean;\n\nexport type ImageRequestQueueItem = {\n requestParameters: RequestParameters;\n supportImageRefresh: boolean;\n state: 'queued' | 'running' | 'completed';\n abortController: AbortController;\n onError: (error: Error) => void;\n onSuccess: (response: GetResourceResponse) => void;\n}\n\ntype ImageQueueThrottleCallbackDictionary = {\n [Key: number]: ImageQueueThrottleControlCallback;\n}\n\ntype HTMLImageElementWithPriority = HTMLImageElement &\n{\n // fetchPriority is experimental property supported on Chromium browsers from Version 102\n // By default images are downloaded with priority low, whereas fetch request downloads with priority high\n // https://developer.mozilla.org/en-US/docs/Web/API/HTMLImageElement/fetchPriority\n fetchPriority?: 'auto' | 'high' | 'low';\n};\n\n/**\n * By default, the image queue is self driven, meaning as soon as one requested item is processed,\n * it will move on to next one as quickly as it can while limiting\n * the number of concurrent requests to MAX_PARALLEL_IMAGE_REQUESTS. The default behavior\n * ensures that static views of the map can be rendered with minimal delay.\n *\n * However, the default behavior can prevent dynamic views of the map from rendering\n * smoothly in that many requests can finish in one render frame, putting too much pressure on GPU.\n *\n * When the view of the map is moving dynamically, smoother frame rates can be achieved\n * by throttling the number of items processed by the queue per frame. This can be\n * accomplished by using {@link addThrottleControl} to allow the caller to\n * use a lambda function to determine when the queue should be throttled (e.g. when isMoving())\n * and manually calling {@link processQueue} in the render loop.\n */\nexport namespace ImageRequest {\n let imageRequestQueue : ImageRequestQueueItem[];\n let currentParallelImageRequests:number;\n\n let throttleControlCallbackHandleCounter: number;\n let throttleControlCallbacks: ImageQueueThrottleCallbackDictionary;\n\n /**\n * Reset the image request queue, removing all pending requests.\n */\n export const resetRequestQueue = (): void => {\n imageRequestQueue = [];\n currentParallelImageRequests = 0;\n throttleControlCallbackHandleCounter = 0;\n throttleControlCallbacks = {};\n };\n\n /**\n * Install a callback to control when image queue throttling is desired.\n * (e.g. when the map view is moving)\n * @param callback - The callback function to install\n * @returns handle that identifies the installed callback.\n */\n export const addThrottleControl = (callback: ImageQueueThrottleControlCallback): number => {\n const handle = throttleControlCallbackHandleCounter++;\n throttleControlCallbacks[handle] = callback;\n return handle;\n };\n\n /**\n * Remove a previously installed callback by passing in the handle returned\n * by {@link addThrottleControl}.\n * @param callbackHandle - The handle for the callback to remove.\n */\n export const removeThrottleControl = (callbackHandle: number): void => {\n delete throttleControlCallbacks[callbackHandle];\n // Try updating the queue\n processQueue();\n };\n\n /**\n * Check to see if any of the installed callbacks are requesting the queue\n * to be throttled.\n * @returns `true` if any callback is causing the queue to be throttled.\n */\n const isThrottled = (): boolean => {\n for (const key of Object.keys(throttleControlCallbacks)) {\n if (throttleControlCallbacks[key]()) {\n return true;\n }\n }\n return false;\n };\n\n /**\n * Request to load an image.\n * @param requestParameters - Request parameters.\n * @param abortController - allows to abort the request.\n * @param supportImageRefresh - `true`, if the image request need to support refresh based on cache headers.\n * @returns - A promise resolved when the image is loaded.\n */\n export const getImage = (requestParameters: RequestParameters, abortController: AbortController, supportImageRefresh: boolean = true): Promise> => {\n return new Promise>((resolve, reject) => {\n if (webpSupported.supported) {\n if (!requestParameters.headers) {\n requestParameters.headers = {};\n }\n requestParameters.headers.accept = 'image/webp,*/*';\n }\n extend(requestParameters, {type: 'image'});\n const request: ImageRequestQueueItem = {\n abortController,\n requestParameters,\n supportImageRefresh,\n state: 'queued',\n onError: (error: Error) => {\n reject(error);\n },\n onSuccess: (response) => {\n resolve(response);\n }\n };\n\n imageRequestQueue.push(request);\n processQueue();\n });\n };\n\n const arrayBufferToCanvasImageSource = (data: ArrayBuffer): Promise => {\n const imageBitmapSupported = typeof createImageBitmap === 'function';\n if (imageBitmapSupported) {\n return arrayBufferToImageBitmap(data);\n } else {\n return arrayBufferToImage(data);\n }\n };\n\n const doImageRequest = async (itemInQueue: ImageRequestQueueItem) => {\n itemInQueue.state = 'running';\n const {requestParameters, supportImageRefresh, onError, onSuccess, abortController} = itemInQueue;\n // - If refreshExpiredTiles is false, then we can use HTMLImageElement to download raster images.\n // - Fetch/XHR (via MakeRequest API) will be used to download images for following scenarios:\n // 1. Style image sprite will had a issue with HTMLImageElement as described\n // here: https://github.com/mapbox/mapbox-gl-js/issues/1470\n // 2. If refreshExpiredTiles is true (default), then in order to read the image cache header,\n // fetch/XHR request will be required\n // - For any special case handling like use of AddProtocol, worker initiated request or additional headers\n // let makeRequest handle it.\n // - HtmlImageElement request automatically adds accept header for all the browser supported images\n const canUseHTMLImageElement = supportImageRefresh === false &&\n !isWorker(self) &&\n !getProtocol(requestParameters.url) &&\n (!requestParameters.headers ||\n Object.keys(requestParameters.headers).reduce((acc, item) => acc && item === 'accept', true));\n\n currentParallelImageRequests++;\n\n const getImagePromise = canUseHTMLImageElement ?\n getImageUsingHtmlImage(requestParameters, abortController) :\n makeRequest(requestParameters, abortController);\n\n try {\n const response = await getImagePromise;\n delete itemInQueue.abortController;\n itemInQueue.state = 'completed';\n if (response.data instanceof HTMLImageElement || isImageBitmap(response.data)) {\n // User using addProtocol can directly return HTMLImageElement/ImageBitmap type\n // If HtmlImageElement is used to get image then response type will be HTMLImageElement\n onSuccess(response as GetResourceResponse);\n } else if (response.data) {\n const img = await arrayBufferToCanvasImageSource(response.data);\n onSuccess({data: img, cacheControl: response.cacheControl, expires: response.expires});\n }\n } catch (err) {\n delete itemInQueue.abortController;\n onError(err);\n } finally {\n currentParallelImageRequests--;\n processQueue();\n }\n };\n\n /**\n * Process some number of items in the image request queue.\n */\n const processQueue = (): void => {\n\n const maxImageRequests = isThrottled() ?\n config.MAX_PARALLEL_IMAGE_REQUESTS_PER_FRAME :\n config.MAX_PARALLEL_IMAGE_REQUESTS;\n\n // limit concurrent image loads to help with raster sources performance on big screens\n for (let numImageRequests = currentParallelImageRequests;\n numImageRequests < maxImageRequests && imageRequestQueue.length > 0;\n numImageRequests++) {\n\n const topItemInQueue: ImageRequestQueueItem = imageRequestQueue.shift();\n if (topItemInQueue.abortController.signal.aborted) {\n numImageRequests--;\n continue;\n }\n doImageRequest(topItemInQueue);\n }\n };\n\n const getImageUsingHtmlImage = (requestParameters: RequestParameters, abortController: AbortController): Promise> => {\n return new Promise>((resolve, reject) => {\n\n const image = new Image() as HTMLImageElementWithPriority;\n const url = requestParameters.url;\n const credentials = requestParameters.credentials;\n if (credentials && credentials === 'include') {\n image.crossOrigin = 'use-credentials';\n } else if ((credentials && credentials === 'same-origin') || !sameOrigin(url)) {\n image.crossOrigin = 'anonymous';\n }\n\n abortController.signal.addEventListener('abort', () => {\n // Set src to '' to actually cancel the request\n image.src = '';\n reject(createAbortError());\n });\n\n image.fetchPriority = 'high';\n image.onload = () => {\n image.onerror = image.onload = null;\n resolve({data: image});\n };\n image.onerror = () => {\n image.onerror = image.onload = null;\n if (abortController.signal.aborted) {\n return;\n }\n reject(new Error('Could not load image. Please make sure to use a supported image type such as PNG or JPEG. Note that SVGs are not supported.'));\n };\n image.src = url;\n });\n };\n}\n\nImageRequest.resetRequestQueue();\n","import {createAbortError} from './abort_error';\n\nconst now = typeof performance !== 'undefined' && performance && performance.now ?\n performance.now.bind(performance) :\n Date.now.bind(Date);\n\nlet linkEl;\n\nlet reducedMotionQuery: MediaQueryList;\n\n/** */\nexport const browser = {\n /**\n * Provides a function that outputs milliseconds: either performance.now()\n * or a fallback to Date.now()\n */\n now,\n\n frameAsync(abortController: AbortController): Promise {\n return new Promise((resolve, reject) => {\n const frame = requestAnimationFrame(resolve);\n abortController.signal.addEventListener('abort', () => {\n cancelAnimationFrame(frame);\n reject(createAbortError());\n });\n });\n },\n\n getImageData(img: HTMLImageElement | ImageBitmap, padding: number = 0): ImageData {\n const context = this.getImageCanvasContext(img);\n return context.getImageData(-padding, -padding, img.width as number + 2 * padding, img.height as number + 2 * padding);\n },\n\n getImageCanvasContext(img: HTMLImageElement | ImageBitmap): CanvasRenderingContext2D {\n const canvas = window.document.createElement('canvas') as HTMLCanvasElement;\n const context = canvas.getContext('2d', {willReadFrequently: true});\n if (!context) {\n throw new Error('failed to create canvas 2d context');\n }\n canvas.width = img.width as number;\n canvas.height = img.height as number;\n context.drawImage(img, 0, 0, img.width as number, img.height as number);\n return context;\n },\n\n resolveURL(path: string) {\n if (!linkEl) linkEl = document.createElement('a');\n linkEl.href = path;\n return linkEl.href;\n },\n\n hardwareConcurrency: typeof navigator !== 'undefined' && navigator.hardwareConcurrency || 4,\n\n get prefersReducedMotion(): boolean {\n // In case your test crashes when checking matchMedia, call setMatchMedia from 'src/util/test/util'\n if (!matchMedia) return false;\n //Lazily initialize media query\n if (reducedMotionQuery == null) {\n reducedMotionQuery = matchMedia('(prefers-reduced-motion: reduce)');\n }\n return reducedMotionQuery.matches;\n },\n};\n","import type {SpriteSpecification} from '@maplibre/maplibre-gl-style-spec';\n\n/**\n * Takes a SpriteSpecification value and returns it in its array form. If `undefined` is passed as an input value, an\n * empty array is returned.\n * duplicated entries with identical id/url will be removed in returned array\n * @param sprite - optional sprite to coerce\n * @returns an empty array in case `undefined` is passed; id-url pairs otherwise\n */\nexport function coerceSpriteToArray(sprite?: SpriteSpecification): {id: string; url: string}[] {\n const resultArray: {id: string; url: string}[] = [];\n\n if (typeof sprite === 'string') {\n resultArray.push({id: 'default', url: sprite});\n } else if (sprite && sprite.length > 0) {\n const dedupArray: string[] = [];\n for (const {id, url} of sprite) {\n const key = `${id}${url}`;\n if (dedupArray.indexOf(key) === -1) {\n dedupArray.push(key);\n resultArray.push({id, url});\n }\n }\n }\n\n return resultArray;\n\n}\n","import {type GetResourceResponse, getJSON} from '../util/ajax';\nimport {ImageRequest} from '../util/image_request';\nimport {ResourceType} from '../util/request_manager';\n\nimport {browser} from '../util/browser';\nimport {coerceSpriteToArray} from '../util/style';\n\nimport type {SpriteSpecification} from '@maplibre/maplibre-gl-style-spec';\nimport type {SpriteJSON, StyleImage} from './style_image';\nimport type {RequestManager} from '../util/request_manager';\n\nexport type LoadSpriteResult = {\n [spriteName: string]: {\n [id: string]: StyleImage;\n };\n}\n\nexport function normalizeSpriteURL(url: string, format: string, extension: string): string {\n try {\n const parsed = new URL(url);\n parsed.pathname += `${format}${extension}`;\n return parsed.toString();\n }\n catch {\n throw new Error(`Invalid sprite URL \"${url}\", must be absolute. Modify style specification directly or use TransformStyleFunction to correct the issue dynamically`)\n }\n}\n\nexport async function loadSprite(\n originalSprite: SpriteSpecification,\n requestManager: RequestManager,\n pixelRatio: number,\n abortController: AbortController,\n): Promise {\n const spriteArray = coerceSpriteToArray(originalSprite);\n const format = pixelRatio > 1 ? '@2x' : '';\n\n const jsonsMap: {[id: string]: Promise>} = {};\n const imagesMap: {[id: string]: Promise>} = {};\n\n for (const {id, url} of spriteArray) {\n const jsonRequestParameters = requestManager.transformRequest(normalizeSpriteURL(url, format, '.json'), ResourceType.SpriteJSON);\n jsonsMap[id] = getJSON(jsonRequestParameters, abortController);\n\n const imageRequestParameters = requestManager.transformRequest(normalizeSpriteURL(url, format, '.png'), ResourceType.SpriteImage);\n imagesMap[id] = ImageRequest.getImage(imageRequestParameters, abortController);\n }\n\n await Promise.all([...Object.values(jsonsMap), ...Object.values(imagesMap)]);\n return doOnceCompleted(jsonsMap, imagesMap);\n}\n\n/**\n * @param jsonsMap - JSON data map\n * @param imagesMap - image data map\n */\nasync function doOnceCompleted(\n jsonsMap:{[id: string]: Promise>},\n imagesMap:{[id: string]: Promise>}): Promise {\n\n const result = {} as {[spriteName: string]: {[id: string]: StyleImage}};\n for (const spriteName in jsonsMap) {\n result[spriteName] = {};\n\n const context = browser.getImageCanvasContext((await imagesMap[spriteName]).data);\n const json = (await jsonsMap[spriteName]).data;\n\n for (const id in json) {\n const {width, height, x, y, sdf, pixelRatio, stretchX, stretchY, content, textFitWidth, textFitHeight} = json[id];\n const spriteData = {width, height, x, y, context};\n result[spriteName][id] = {data: null, pixelRatio, sdf, stretchX, stretchY, content, textFitWidth, textFitHeight, spriteData};\n }\n }\n\n return result;\n}\n","import type {Context} from '../gl/context';\nimport type {RGBAImage, AlphaImage} from '../util/image';\nimport {isImageBitmap} from '../util/util';\n\nexport type TextureFormat = WebGLRenderingContextBase['RGBA'] | WebGLRenderingContextBase['ALPHA'];\nexport type TextureFilter = WebGLRenderingContextBase['LINEAR'] | WebGLRenderingContextBase['LINEAR_MIPMAP_NEAREST'] | WebGLRenderingContextBase['NEAREST'];\nexport type TextureWrap = WebGLRenderingContextBase['REPEAT'] | WebGLRenderingContextBase['CLAMP_TO_EDGE'] | WebGLRenderingContextBase['MIRRORED_REPEAT'];\n\ntype EmptyImage = {\n width: number;\n height: number;\n data: null;\n};\n\ntype DataTextureImage = RGBAImage | AlphaImage | EmptyImage;\nexport type TextureImage = TexImageSource | DataTextureImage;\n\n/**\n * @internal\n * A `Texture` GL related object\n */\nexport class Texture {\n context: Context;\n size: [number, number];\n texture: WebGLTexture;\n format: TextureFormat;\n filter: TextureFilter;\n wrap: TextureWrap;\n useMipmap: boolean;\n\n constructor(context: Context, image: TextureImage, format: TextureFormat, options?: {\n premultiply?: boolean;\n useMipmap?: boolean;\n } | null) {\n this.context = context;\n this.format = format;\n this.texture = context.gl.createTexture();\n this.update(image, options);\n }\n\n update(image: TextureImage, options?: {\n premultiply?: boolean;\n useMipmap?: boolean;\n } | null, position?: {\n x: number;\n y: number;\n }) {\n const {width, height} = image as {width: number; height: number};\n const resize = (!this.size || this.size[0] !== width || this.size[1] !== height) && !position;\n const {context} = this;\n const {gl} = context;\n\n this.useMipmap = Boolean(options && options.useMipmap);\n gl.bindTexture(gl.TEXTURE_2D, this.texture);\n\n context.pixelStoreUnpackFlipY.set(false);\n context.pixelStoreUnpack.set(1);\n context.pixelStoreUnpackPremultiplyAlpha.set(this.format === gl.RGBA && (!options || options.premultiply !== false));\n\n if (resize) {\n this.size = [width, height];\n\n if (image instanceof HTMLImageElement || image instanceof HTMLCanvasElement || image instanceof HTMLVideoElement || image instanceof ImageData || isImageBitmap(image)) {\n gl.texImage2D(gl.TEXTURE_2D, 0, this.format, this.format, gl.UNSIGNED_BYTE, image);\n } else {\n gl.texImage2D(gl.TEXTURE_2D, 0, this.format, width, height, 0, this.format, gl.UNSIGNED_BYTE, (image as DataTextureImage).data);\n }\n\n } else {\n const {x, y} = position || {x: 0, y: 0};\n if (image instanceof HTMLImageElement || image instanceof HTMLCanvasElement || image instanceof HTMLVideoElement || image instanceof ImageData || isImageBitmap(image)) {\n gl.texSubImage2D(gl.TEXTURE_2D, 0, x, y, gl.RGBA, gl.UNSIGNED_BYTE, image);\n } else {\n gl.texSubImage2D(gl.TEXTURE_2D, 0, x, y, width, height, gl.RGBA, gl.UNSIGNED_BYTE, (image as DataTextureImage).data);\n }\n }\n\n if (this.useMipmap && this.isSizePowerOfTwo()) {\n gl.generateMipmap(gl.TEXTURE_2D);\n }\n }\n\n bind(filter: TextureFilter, wrap: TextureWrap, minFilter?: TextureFilter | null) {\n const {context} = this;\n const {gl} = context;\n gl.bindTexture(gl.TEXTURE_2D, this.texture);\n\n if (minFilter === gl.LINEAR_MIPMAP_NEAREST && !this.isSizePowerOfTwo()) {\n minFilter = gl.LINEAR;\n }\n\n if (filter !== this.filter) {\n gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, filter);\n gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, minFilter || filter);\n this.filter = filter;\n }\n\n if (wrap !== this.wrap) {\n gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, wrap);\n gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, wrap);\n this.wrap = wrap;\n }\n }\n\n isSizePowerOfTwo() {\n return this.size[0] === this.size[1] && (Math.log(this.size[0]) / Math.LN2) % 1 === 0;\n }\n\n destroy() {\n const {gl} = this.context;\n gl.deleteTexture(this.texture);\n this.texture = null;\n }\n}\n","import {type RGBAImage} from '../util/image';\n\nimport type {Map} from '../ui/map';\n\nexport type SpriteJSON = {[id: string]: StyleImageMetadata & {\n width: number;\n height: number;\n x: number;\n y: number;\n};}\n\n/**\n * The sprite data\n */\nexport type SpriteOnDemandStyleImage = {\n width: number;\n height: number;\n x: number;\n y: number;\n context: CanvasRenderingContext2D;\n};\n\n/**\n * The style's image metadata\n */\nexport type StyleImageData = {\n data: RGBAImage;\n version?: number;\n hasRenderCallback?: boolean;\n userImage?: StyleImageInterface;\n spriteData?: SpriteOnDemandStyleImage;\n};\n\n/**\n * Enumeration of possible values for StyleImageMetadata.textFitWidth and textFitHeight.\n */\nexport const enum TextFit {\n /**\n * The image will be resized on the specified axis to tightly fit the content rectangle to target text.\n * This is the same as not being defined.\n */\n stretchOrShrink = 'stretchOrShrink',\n /**\n * The image will be resized on the specified axis to fit the content rectangle to the target text, but will not\n * fall below the aspect ratio of the original content rectangle if the other axis is set to proportional.\n */\n stretchOnly = 'stretchOnly',\n /**\n * The image will be resized on the specified axis to fit the content rectangle to the target text and\n * will resize the other axis to maintain the aspect ratio of the content rectangle.\n */\n proportional = 'proportional'\n}\n\n/**\n * The style's image metadata\n */\nexport type StyleImageMetadata = {\n /**\n * The ratio of pixels in the image to physical pixels on the screen\n */\n pixelRatio: number;\n /**\n * Whether the image should be interpreted as an SDF image\n */\n sdf: boolean;\n /**\n * If `icon-text-fit` is used in a layer with this image, this option defines the part(s) of the image that can be stretched horizontally.\n */\n stretchX?: Array<[number, number]>;\n /**\n * If `icon-text-fit` is used in a layer with this image, this option defines the part(s) of the image that can be stretched vertically.\n */\n stretchY?: Array<[number, number]>;\n /**\n * If `icon-text-fit` is used in a layer with this image, this option defines the part of the image that can be covered by the content in `text-field`.\n */\n content?: [number, number, number, number];\n /**\n * If `icon-text-fit` is used in a layer with this image, this option defines constraints on the horizontal scaling of the image.\n */\n textFitWidth?: TextFit;\n /**\n * If `icon-text-fit` is used in a layer with this image, this option defines constraints on the vertical scaling of the image.\n */\n textFitHeight?: TextFit;\n};\n\n/**\n * the style's image, including data and metedata\n */\nexport type StyleImage = StyleImageData & StyleImageMetadata;\n\n/**\n * Interface for dynamically generated style images. This is a specification for\n * implementers to model: it is not an exported method or class.\n *\n * Images implementing this interface can be redrawn for every frame. They can be used to animate\n * icons and patterns or make them respond to user input. Style images can implement a\n * {@link StyleImageInterface#render} method. The method is called every frame and\n * can be used to update the image.\n *\n * @see [Add an animated icon to the map.](https://maplibre.org/maplibre-gl-js/docs/examples/add-image-animated/)\n *\n * @example\n * ```ts\n * let flashingSquare = {\n * width: 64,\n * height: 64,\n * data: new Uint8Array(64 * 64 * 4),\n *\n * onAdd: function(map) {\n * this.map = map;\n * },\n *\n * render: function() {\n * // keep repainting while the icon is on the map\n * this.map.triggerRepaint();\n *\n * // alternate between black and white based on the time\n * let value = Math.round(Date.now() / 1000) % 2 === 0 ? 255 : 0;\n *\n * // check if image needs to be changed\n * if (value !== this.previousValue) {\n * this.previousValue = value;\n *\n * let bytesPerPixel = 4;\n * for (let x = 0; x < this.width; x++) {\n * for (let y = 0; y < this.height; y++) {\n * let offset = (y * this.width + x) * bytesPerPixel;\n * this.data[offset + 0] = value;\n * this.data[offset + 1] = value;\n * this.data[offset + 2] = value;\n * this.data[offset + 3] = 255;\n * }\n * }\n *\n * // return true to indicate that the image changed\n * return true;\n * }\n * }\n * }\n *\n * map.addImage('flashing_square', flashingSquare);\n * ```\n */\n\nexport interface StyleImageInterface {\n width: number;\n height: number;\n data: Uint8Array | Uint8ClampedArray;\n /**\n * This method is called once before every frame where the icon will be used.\n * The method can optionally update the image's `data` member with a new image.\n *\n * If the method updates the image it must return `true` to commit the change.\n * If the method returns `false` or nothing the image is assumed to not have changed.\n *\n * If updates are infrequent it maybe easier to use {@link Map#updateImage} to update\n * the image instead of implementing this method.\n *\n * @returns `true` if this method updated the image. `false` if the image was not changed.\n */\n render?: () => boolean;\n /**\n * Optional method called when the layer has been added to the Map with {@link Map#addImage}.\n *\n * @param map - The Map this custom layer was just added to.\n */\n onAdd?: (map: Map, id: string) => void;\n /**\n * Optional method called when the icon is removed from the map with {@link Map#removeImage}.\n * This gives the image a chance to clean up resources and event listeners.\n */\n onRemove?: () => void;\n}\n\nexport function renderStyleImage(image: StyleImage) {\n const {userImage} = image;\n if (userImage && userImage.render) {\n const updated = userImage.render();\n if (updated) {\n image.data.replace(new Uint8Array(userImage.data.buffer));\n return true;\n }\n }\n return false;\n}\n","/* eslint-disable key-spacing */\nimport potpack from 'potpack';\n\nimport {Event, ErrorEvent, Evented} from '../util/evented';\nimport {RGBAImage} from '../util/image';\nimport {ImagePosition} from './image_atlas';\nimport {Texture} from './texture';\nimport {renderStyleImage} from '../style/style_image';\nimport {warnOnce} from '../util/util';\n\nimport type {StyleImage} from '../style/style_image';\nimport type {Context} from '../gl/context';\nimport type {PotpackBox} from 'potpack';\nimport type {GetImagesResponse} from '../util/actor_messages';\n\ntype Pattern = {\n bin: PotpackBox;\n position: ImagePosition;\n};\n\n/**\n * When copied into the atlas texture, image data is padded by one pixel on each side. Icon\n * images are padded with fully transparent pixels, while pattern images are padded with a\n * copy of the image data wrapped from the opposite side. In both cases, this ensures the\n * correct behavior of GL_LINEAR texture sampling mode.\n */\nconst padding = 1;\n\n/**\n * ImageManager does three things:\n *\n * 1. Tracks requests for icon images from tile workers and sends responses when the requests are fulfilled.\n * 2. Builds a texture atlas for pattern images.\n * 3. Rerenders renderable images once per frame\n *\n * These are disparate responsibilities and should eventually be handled by different classes. When we implement\n * data-driven support for `*-pattern`, we'll likely use per-bucket pattern atlases, and that would be a good time\n * to refactor this.\n*/\nexport class ImageManager extends Evented {\n images: {[_: string]: StyleImage};\n updatedImages: {[_: string]: boolean};\n callbackDispatchedThisFrame: {[_: string]: boolean};\n loaded: boolean;\n /**\n * This is used to track requests for images that are not yet available. When the image is loaded,\n * the requestors will be notified.\n */\n requestors: Array<{\n ids: Array;\n promiseResolve: (value: GetImagesResponse) => void;\n }>;\n\n patterns: {[_: string]: Pattern};\n atlasImage: RGBAImage;\n atlasTexture: Texture;\n dirty: boolean;\n\n constructor() {\n super();\n this.images = {};\n this.updatedImages = {};\n this.callbackDispatchedThisFrame = {};\n this.loaded = false;\n this.requestors = [];\n\n this.patterns = {};\n this.atlasImage = new RGBAImage({width: 1, height: 1});\n this.dirty = true;\n }\n\n isLoaded() {\n return this.loaded;\n }\n\n setLoaded(loaded: boolean) {\n if (this.loaded === loaded) {\n return;\n }\n\n this.loaded = loaded;\n\n if (loaded) {\n for (const {ids, promiseResolve} of this.requestors) {\n promiseResolve(this._getImagesForIds(ids));\n }\n this.requestors = [];\n }\n }\n\n getImage(id: string): StyleImage {\n const image = this.images[id];\n\n // Extract sprite image data on demand\n if (image && !image.data && image.spriteData) {\n const spriteData = image.spriteData;\n image.data = new RGBAImage({\n width: spriteData.width,\n height: spriteData.height\n }, spriteData.context.getImageData(\n spriteData.x,\n spriteData.y,\n spriteData.width,\n spriteData.height).data);\n image.spriteData = null;\n }\n\n return image;\n }\n\n addImage(id: string, image: StyleImage) {\n if (this.images[id]) throw new Error(`Image id ${id} already exist, use updateImage instead`);\n if (this._validate(id, image)) {\n this.images[id] = image;\n }\n }\n\n _validate(id: string, image: StyleImage) {\n let valid = true;\n const data = image.data || image.spriteData;\n if (!this._validateStretch(image.stretchX, data && data.width)) {\n this.fire(new ErrorEvent(new Error(`Image \"${id}\" has invalid \"stretchX\" value`)));\n valid = false;\n }\n if (!this._validateStretch(image.stretchY, data && data.height)) {\n this.fire(new ErrorEvent(new Error(`Image \"${id}\" has invalid \"stretchY\" value`)));\n valid = false;\n }\n if (!this._validateContent(image.content, image)) {\n this.fire(new ErrorEvent(new Error(`Image \"${id}\" has invalid \"content\" value`)));\n valid = false;\n }\n return valid;\n }\n\n _validateStretch(stretch: Array<[number, number]>, size: number) {\n if (!stretch) return true;\n let last = 0;\n for (const part of stretch) {\n if (part[0] < last || part[1] < part[0] || size < part[1]) return false;\n last = part[1];\n }\n return true;\n }\n\n _validateContent(content: [number, number, number, number], image: StyleImage) {\n if (!content) return true;\n if (content.length !== 4) return false;\n const spriteData = image.spriteData;\n const width = (spriteData && spriteData.width) || image.data.width;\n const height = (spriteData && spriteData.height) || image.data.height;\n if (content[0] < 0 || width < content[0]) return false;\n if (content[1] < 0 || height < content[1]) return false;\n if (content[2] < 0 || width < content[2]) return false;\n if (content[3] < 0 || height < content[3]) return false;\n if (content[2] < content[0]) return false;\n if (content[3] < content[1]) return false;\n return true;\n }\n\n updateImage(id: string, image: StyleImage, validate = true) {\n const oldImage = this.getImage(id);\n if (validate && (oldImage.data.width !== image.data.width || oldImage.data.height !== image.data.height)) {\n throw new Error(`size mismatch between old image (${oldImage.data.width}x${oldImage.data.height}) and new image (${image.data.width}x${image.data.height}).`);\n }\n image.version = oldImage.version + 1;\n this.images[id] = image;\n this.updatedImages[id] = true;\n }\n\n removeImage(id: string) {\n const image = this.images[id];\n delete this.images[id];\n delete this.patterns[id];\n\n if (image.userImage && image.userImage.onRemove) {\n image.userImage.onRemove();\n }\n }\n\n listImages(): Array {\n return Object.keys(this.images);\n }\n\n getImages(ids: Array): Promise {\n return new Promise((resolve, _reject) => {\n // If the sprite has been loaded, or if all the icon dependencies are already present\n // (i.e. if they've been added via runtime styling), then notify the requestor immediately.\n // Otherwise, delay notification until the sprite is loaded. At that point, if any of the\n // dependencies are still unavailable, we'll just assume they are permanently missing.\n let hasAllDependencies = true;\n if (!this.isLoaded()) {\n for (const id of ids) {\n if (!this.images[id]) {\n hasAllDependencies = false;\n }\n }\n }\n if (this.isLoaded() || hasAllDependencies) {\n resolve(this._getImagesForIds(ids));\n } else {\n this.requestors.push({ids, promiseResolve: resolve});\n }\n });\n }\n\n _getImagesForIds(ids: Array): GetImagesResponse {\n const response: GetImagesResponse = {};\n\n for (const id of ids) {\n let image = this.getImage(id);\n\n if (!image) {\n this.fire(new Event('styleimagemissing', {id}));\n //Try to acquire image again in case styleimagemissing has populated it\n image = this.getImage(id);\n }\n\n if (image) {\n // Clone the image so that our own copy of its ArrayBuffer doesn't get transferred.\n response[id] = {\n data: image.data.clone(),\n pixelRatio: image.pixelRatio,\n sdf: image.sdf,\n version: image.version,\n stretchX: image.stretchX,\n stretchY: image.stretchY,\n content: image.content,\n textFitWidth: image.textFitWidth,\n textFitHeight: image.textFitHeight,\n hasRenderCallback: Boolean(image.userImage && image.userImage.render)\n };\n } else {\n warnOnce(`Image \"${id}\" could not be loaded. Please make sure you have added the image with map.addImage() or a \"sprite\" property in your style. You can provide missing images by listening for the \"styleimagemissing\" map event.`);\n }\n }\n return response;\n }\n\n // Pattern stuff\n\n getPixelSize() {\n const {width, height} = this.atlasImage;\n return {width, height};\n }\n\n getPattern(id: string): ImagePosition {\n const pattern = this.patterns[id];\n\n const image = this.getImage(id);\n if (!image) {\n return null;\n }\n\n if (pattern && pattern.position.version === image.version) {\n return pattern.position;\n }\n\n if (!pattern) {\n const w = image.data.width + padding * 2;\n const h = image.data.height + padding * 2;\n const bin = {w, h, x: 0, y: 0};\n const position = new ImagePosition(bin, image);\n this.patterns[id] = {bin, position};\n } else {\n pattern.position.version = image.version;\n }\n\n this._updatePatternAtlas();\n\n return this.patterns[id].position;\n }\n\n bind(context: Context) {\n const gl = context.gl;\n if (!this.atlasTexture) {\n this.atlasTexture = new Texture(context, this.atlasImage, gl.RGBA);\n } else if (this.dirty) {\n this.atlasTexture.update(this.atlasImage);\n this.dirty = false;\n }\n\n this.atlasTexture.bind(gl.LINEAR, gl.CLAMP_TO_EDGE);\n }\n\n _updatePatternAtlas() {\n const bins = [];\n for (const id in this.patterns) {\n bins.push(this.patterns[id].bin);\n }\n\n const {w, h} = potpack(bins);\n\n const dst = this.atlasImage;\n dst.resize({width: w || 1, height: h || 1});\n\n for (const id in this.patterns) {\n const {bin} = this.patterns[id];\n const x = bin.x + padding;\n const y = bin.y + padding;\n const src = this.getImage(id).data;\n const w = src.width;\n const h = src.height;\n\n RGBAImage.copy(src, dst, {x: 0, y: 0}, {x, y}, {width: w, height: h});\n\n // Add 1 pixel wrapped padding on each side of the image.\n RGBAImage.copy(src, dst, {x: 0, y: h - 1}, {x, y: y - 1}, {width: w, height: 1}); // T\n RGBAImage.copy(src, dst, {x: 0, y: 0}, {x, y: y + h}, {width: w, height: 1}); // B\n RGBAImage.copy(src, dst, {x: w - 1, y: 0}, {x: x - 1, y}, {width: 1, height: h}); // L\n RGBAImage.copy(src, dst, {x: 0, y: 0}, {x: x + w, y}, {width: 1, height: h}); // R\n }\n\n this.dirty = true;\n }\n\n beginFrame() {\n this.callbackDispatchedThisFrame = {};\n }\n\n dispatchRenderCallbacks(ids: Array) {\n for (const id of ids) {\n\n // the callback for the image was already dispatched for a different frame\n if (this.callbackDispatchedThisFrame[id]) continue;\n this.callbackDispatchedThisFrame[id] = true;\n\n const image = this.getImage(id);\n if (!image) warnOnce(`Image with ID: \"${id}\" was not found`);\n\n const updated = renderStyleImage(image);\n if (updated) {\n this.updateImage(id, image);\n }\n }\n }\n}\n","const INF = 1e20;\n\nexport default class TinySDF {\n constructor({\n fontSize = 24,\n buffer = 3,\n radius = 8,\n cutoff = 0.25,\n fontFamily = 'sans-serif',\n fontWeight = 'normal',\n fontStyle = 'normal'\n } = {}) {\n this.buffer = buffer;\n this.cutoff = cutoff;\n this.radius = radius;\n\n // make the canvas size big enough to both have the specified buffer around the glyph\n // for \"halo\", and account for some glyphs possibly being larger than their font size\n const size = this.size = fontSize + buffer * 4;\n\n const canvas = this._createCanvas(size);\n const ctx = this.ctx = canvas.getContext('2d', {willReadFrequently: true});\n ctx.font = `${fontStyle} ${fontWeight} ${fontSize}px ${fontFamily}`;\n\n ctx.textBaseline = 'alphabetic';\n ctx.textAlign = 'left'; // Necessary so that RTL text doesn't have different alignment\n ctx.fillStyle = 'black';\n\n // temporary arrays for the distance transform\n this.gridOuter = new Float64Array(size * size);\n this.gridInner = new Float64Array(size * size);\n this.f = new Float64Array(size);\n this.z = new Float64Array(size + 1);\n this.v = new Uint16Array(size);\n }\n\n _createCanvas(size) {\n const canvas = document.createElement('canvas');\n canvas.width = canvas.height = size;\n return canvas;\n }\n\n draw(char) {\n const {\n width: glyphAdvance,\n actualBoundingBoxAscent,\n actualBoundingBoxDescent,\n actualBoundingBoxLeft,\n actualBoundingBoxRight\n } = this.ctx.measureText(char);\n\n // The integer/pixel part of the top alignment is encoded in metrics.glyphTop\n // The remainder is implicitly encoded in the rasterization\n const glyphTop = Math.ceil(actualBoundingBoxAscent);\n const glyphLeft = 0;\n\n // If the glyph overflows the canvas size, it will be clipped at the bottom/right\n const glyphWidth = Math.max(0, Math.min(this.size - this.buffer, Math.ceil(actualBoundingBoxRight - actualBoundingBoxLeft)));\n const glyphHeight = Math.min(this.size - this.buffer, glyphTop + Math.ceil(actualBoundingBoxDescent));\n\n const width = glyphWidth + 2 * this.buffer;\n const height = glyphHeight + 2 * this.buffer;\n\n const len = Math.max(width * height, 0);\n const data = new Uint8ClampedArray(len);\n const glyph = {data, width, height, glyphWidth, glyphHeight, glyphTop, glyphLeft, glyphAdvance};\n if (glyphWidth === 0 || glyphHeight === 0) return glyph;\n\n const {ctx, buffer, gridInner, gridOuter} = this;\n ctx.clearRect(buffer, buffer, glyphWidth, glyphHeight);\n ctx.fillText(char, buffer, buffer + glyphTop);\n const imgData = ctx.getImageData(buffer, buffer, glyphWidth, glyphHeight);\n\n // Initialize grids outside the glyph range to alpha 0\n gridOuter.fill(INF, 0, len);\n gridInner.fill(0, 0, len);\n\n for (let y = 0; y < glyphHeight; y++) {\n for (let x = 0; x < glyphWidth; x++) {\n const a = imgData.data[4 * (y * glyphWidth + x) + 3] / 255; // alpha value\n if (a === 0) continue; // empty pixels\n\n const j = (y + buffer) * width + x + buffer;\n\n if (a === 1) { // fully drawn pixels\n gridOuter[j] = 0;\n gridInner[j] = INF;\n\n } else { // aliased pixels\n const d = 0.5 - a;\n gridOuter[j] = d > 0 ? d * d : 0;\n gridInner[j] = d < 0 ? d * d : 0;\n }\n }\n }\n\n edt(gridOuter, 0, 0, width, height, width, this.f, this.v, this.z);\n edt(gridInner, buffer, buffer, glyphWidth, glyphHeight, width, this.f, this.v, this.z);\n\n for (let i = 0; i < len; i++) {\n const d = Math.sqrt(gridOuter[i]) - Math.sqrt(gridInner[i]);\n data[i] = Math.round(255 - 255 * (d / this.radius + this.cutoff));\n }\n\n return glyph;\n }\n}\n\n// 2D Euclidean squared distance transform by Felzenszwalb & Huttenlocher https://cs.brown.edu/~pff/papers/dt-final.pdf\nfunction edt(data, x0, y0, width, height, gridSize, f, v, z) {\n for (let x = x0; x < x0 + width; x++) edt1d(data, y0 * gridSize + x, gridSize, height, f, v, z);\n for (let y = y0; y < y0 + height; y++) edt1d(data, y * gridSize + x0, 1, width, f, v, z);\n}\n\n// 1D squared distance transform\nfunction edt1d(grid, offset, stride, length, f, v, z) {\n v[0] = 0;\n z[0] = -INF;\n z[1] = INF;\n f[0] = grid[offset];\n\n for (let q = 1, k = 0, s = 0; q < length; q++) {\n f[q] = grid[offset + q * stride];\n const q2 = q * q;\n do {\n const r = v[k];\n s = (f[q] - f[r] + q2 - r * r) / (q - r) / 2;\n } while (s <= z[k] && --k > -1);\n\n k++;\n v[k] = q;\n z[k] = s;\n z[k + 1] = INF;\n }\n\n for (let q = 0, k = 0; q < length; q++) {\n while (z[k + 1] < q) k++;\n const r = v[k];\n const qr = q - r;\n grid[offset + q * stride] = f[r] + qr * qr;\n }\n}\n","import {loadGlyphRange} from '../style/load_glyph_range';\n\nimport TinySDF from '@mapbox/tiny-sdf';\nimport {AlphaImage} from '../util/image';\n\nimport type {StyleGlyph} from '../style/style_glyph';\nimport type {RequestManager} from '../util/request_manager';\nimport type {GetGlyphsResponse} from '../util/actor_messages';\n\ntype Entry = {\n // null means we've requested the range, but the glyph wasn't included in the result.\n glyphs: {\n [id: number]: StyleGlyph | null;\n };\n requests: {\n [range: number]: Promise<{[_: number]: StyleGlyph | null}>;\n };\n ranges: {\n [range: number]: boolean | null;\n };\n tinySDF?: TinySDF;\n};\n\nexport class GlyphManager {\n requestManager: RequestManager;\n localIdeographFontFamily: string | false;\n entries: {[stack: string]: Entry};\n url: string;\n\n // exposed as statics to enable stubbing in unit tests\n static loadGlyphRange = loadGlyphRange;\n static TinySDF = TinySDF;\n\n constructor(requestManager: RequestManager, localIdeographFontFamily?: string | false) {\n this.requestManager = requestManager;\n this.localIdeographFontFamily = localIdeographFontFamily;\n this.entries = {};\n }\n\n setURL(url?: string | null) {\n this.url = url;\n }\n\n async getGlyphs(glyphs: {[stack: string]: Array}): Promise {\n const glyphsPromises: Promise<{stack: string; id: number; glyph: StyleGlyph}>[] = [];\n\n for (const stack in glyphs) {\n for (const id of glyphs[stack]) {\n glyphsPromises.push(this._getAndCacheGlyphsPromise(stack, id));\n }\n }\n\n const updatedGlyphs = await Promise.all(glyphsPromises);\n\n const result: GetGlyphsResponse = {};\n\n for (const {stack, id, glyph} of updatedGlyphs) {\n if (!result[stack]) {\n result[stack] = {};\n }\n // Clone the glyph so that our own copy of its ArrayBuffer doesn't get transferred.\n result[stack][id] = glyph && {\n id: glyph.id,\n bitmap: glyph.bitmap.clone(),\n metrics: glyph.metrics\n };\n }\n\n return result;\n }\n\n async _getAndCacheGlyphsPromise(stack: string, id: number): Promise<{stack: string; id: number; glyph: StyleGlyph}> {\n let entry = this.entries[stack];\n if (!entry) {\n entry = this.entries[stack] = {\n glyphs: {},\n requests: {},\n ranges: {}\n };\n }\n\n let glyph = entry.glyphs[id];\n if (glyph !== undefined) {\n return {stack, id, glyph};\n }\n\n glyph = this._tinySDF(entry, stack, id);\n if (glyph) {\n entry.glyphs[id] = glyph;\n return {stack, id, glyph};\n }\n\n const range = Math.floor(id / 256);\n if (range * 256 > 65535) {\n throw new Error('glyphs > 65535 not supported');\n }\n\n if (entry.ranges[range]) {\n return {stack, id, glyph};\n }\n\n if (!this.url) {\n throw new Error('glyphsUrl is not set');\n }\n\n if (!entry.requests[range]) {\n const promise = GlyphManager.loadGlyphRange(stack, range, this.url, this.requestManager);\n entry.requests[range] = promise;\n }\n\n const response = await entry.requests[range];\n for (const id in response) {\n if (!this._doesCharSupportLocalGlyph(+id)) {\n entry.glyphs[+id] = response[+id];\n }\n }\n entry.ranges[range] = true;\n return {stack, id, glyph: response[id] || null};\n }\n\n _doesCharSupportLocalGlyph(id: number): boolean {\n // The CJK Unified Ideographs blocks and Hangul Syllables blocks are\n // spread across many glyph PBFs and are typically accessed very\n // randomly. Preferring local rendering for these blocks reduces\n // wasteful bandwidth consumption. For visual consistency within CJKV\n // text, also include any other CJKV or siniform ideograph or hangul,\n // hiragana, or katakana character.\n return !!this.localIdeographFontFamily &&\n /\\p{Ideo}|\\p{sc=Hang}|\\p{sc=Hira}|\\p{sc=Kana}/u.test(String.fromCodePoint(id));\n }\n\n _tinySDF(entry: Entry, stack: string, id: number): StyleGlyph {\n const fontFamily = this.localIdeographFontFamily;\n if (!fontFamily) {\n return;\n }\n\n if (!this._doesCharSupportLocalGlyph(id)) {\n return;\n }\n\n // Client-generated glyphs are rendered at 2x texture scale,\n // because CJK glyphs are more detailed than others.\n const textureScale = 2;\n\n let tinySDF = entry.tinySDF;\n if (!tinySDF) {\n let fontWeight = '400';\n if (/bold/i.test(stack)) {\n fontWeight = '900';\n } else if (/medium/i.test(stack)) {\n fontWeight = '500';\n } else if (/light/i.test(stack)) {\n fontWeight = '200';\n }\n tinySDF = entry.tinySDF = new GlyphManager.TinySDF({\n fontSize: 24 * textureScale,\n buffer: 3 * textureScale,\n radius: 8 * textureScale,\n cutoff: 0.25,\n fontFamily,\n fontWeight\n });\n }\n\n const char = tinySDF.draw(String.fromCharCode(id));\n\n /**\n * TinySDF's \"top\" is the distance from the alphabetic baseline to the top of the glyph.\n * Server-generated fonts specify \"top\" relative to an origin above the em box (the origin\n * comes from FreeType, but I'm unclear on exactly how it's derived)\n * ref: https://github.com/mapbox/sdf-glyph-foundry\n *\n * Server fonts don't yet include baseline information, so we can't line up exactly with them\n * (and they don't line up with each other)\n * ref: https://github.com/mapbox/node-fontnik/pull/160\n *\n * To approximately align TinySDF glyphs with server-provided glyphs, we use this baseline adjustment\n * factor calibrated to be in between DIN Pro and Arial Unicode (but closer to Arial Unicode)\n */\n const topAdjustment = 27.5;\n\n const leftAdjustment = 0.5;\n\n return {\n id,\n bitmap: new AlphaImage({width: char.width || 30 * textureScale, height: char.height || 30 * textureScale}, char.data),\n metrics: {\n width: char.glyphWidth / textureScale || 24,\n height: char.glyphHeight / textureScale || 24,\n left: (char.glyphLeft / textureScale + leftAdjustment) || 0,\n top: char.glyphTop / textureScale - topAdjustment || -8,\n advance: char.glyphAdvance / textureScale || 24,\n isDoubleResolution: true\n }\n };\n }\n}\n","import {getArrayBuffer} from '../util/ajax';\nimport {ResourceType} from '../util/request_manager';\n\nimport {parseGlyphPbf} from './parse_glyph_pbf';\n\nimport type {StyleGlyph} from './style_glyph';\nimport type {RequestManager} from '../util/request_manager';\n\nexport async function loadGlyphRange(fontstack: string,\n range: number,\n urlTemplate: string,\n requestManager: RequestManager): Promise<{[_: number]: StyleGlyph | null}> {\n const begin = range * 256;\n const end = begin + 255;\n\n const request = requestManager.transformRequest(\n urlTemplate.replace('{fontstack}', fontstack).replace('{range}', `${begin}-${end}`),\n ResourceType.Glyphs\n );\n\n const response = await getArrayBuffer(request, new AbortController());\n if (!response || !response.data) {\n throw new Error(`Could not load glyph range. range: ${range}, ${begin}-${end}`);\n }\n const glyphs = {};\n\n for (const glyph of parseGlyphPbf(response.data)) {\n glyphs[glyph.id] = glyph;\n }\n\n return glyphs;\n}\n","import {interpolates, type Color, latest as styleSpec} from '@maplibre/maplibre-gl-style-spec';\n\nimport {sphericalToCartesian} from '../util/util';\nimport {Evented} from '../util/evented';\nimport {\n validateStyle,\n validateLight,\n emitValidationErrors\n} from './validate_style';\n\nimport type {StylePropertySpecification, LightSpecification} from '@maplibre/maplibre-gl-style-spec';\nimport type {EvaluationParameters} from './evaluation_parameters';\nimport type {StyleSetterOptions} from '../style/style';\nimport {Properties, Transitionable, type Transitioning, type PossiblyEvaluated, DataConstantProperty} from './properties';\n\nimport type {\n Property,\n PropertyValue,\n TransitionParameters\n} from './properties';\n\ntype LightPosition = {\n x: number;\n y: number;\n z: number;\n};\n\nclass LightPositionProperty implements Property<[number, number, number], LightPosition> {\n specification: StylePropertySpecification;\n\n constructor() {\n this.specification = styleSpec.light.position as StylePropertySpecification;\n }\n\n possiblyEvaluate(\n value: PropertyValue<[number, number, number], LightPosition>,\n parameters: EvaluationParameters\n ): LightPosition {\n return sphericalToCartesian(value.expression.evaluate(parameters));\n }\n\n interpolate(a: LightPosition, b: LightPosition, t: number): LightPosition {\n return {\n x: interpolates.number(a.x, b.x, t),\n y: interpolates.number(a.y, b.y, t),\n z: interpolates.number(a.z, b.z, t),\n };\n }\n}\n\ntype LightProps = {\n 'anchor': DataConstantProperty<'map' | 'viewport'>;\n 'position': LightPositionProperty;\n 'color': DataConstantProperty;\n 'intensity': DataConstantProperty;\n};\n\ntype LightPropsPossiblyEvaluated = {\n 'anchor': 'map' | 'viewport';\n 'position': LightPosition;\n 'color': Color;\n 'intensity': number;\n};\n\nconst TRANSITION_SUFFIX = '-transition';\n\nlet lightProperties: Properties;\n\n/*\n * Represents the light used to light extruded features.\n */\nexport class Light extends Evented {\n _transitionable: Transitionable;\n _transitioning: Transitioning;\n properties: PossiblyEvaluated;\n\n constructor(lightOptions?: LightSpecification) {\n super();\n lightProperties = lightProperties || new Properties({\n 'anchor': new DataConstantProperty(styleSpec.light.anchor as StylePropertySpecification),\n 'position': new LightPositionProperty(),\n 'color': new DataConstantProperty(styleSpec.light.color as StylePropertySpecification),\n 'intensity': new DataConstantProperty(styleSpec.light.intensity as StylePropertySpecification),\n });\n this._transitionable = new Transitionable(lightProperties);\n this.setLight(lightOptions);\n this._transitioning = this._transitionable.untransitioned();\n }\n\n getLight(): LightSpecification {\n return this._transitionable.serialize();\n }\n\n setLight(light?: LightSpecification, options: StyleSetterOptions = {}) {\n if (this._validate(validateLight, light, options)) {\n return;\n }\n\n for (const name in light) {\n const value = light[name];\n if (name.endsWith(TRANSITION_SUFFIX)) {\n this._transitionable.setTransition(name.slice(0, -TRANSITION_SUFFIX.length) as keyof LightProps, value);\n } else {\n this._transitionable.setValue(name as keyof LightProps, value);\n }\n }\n }\n\n updateTransitions(parameters: TransitionParameters) {\n this._transitioning = this._transitionable.transitioned(parameters, this._transitioning);\n }\n\n hasTransition() {\n return this._transitioning.hasTransition();\n }\n\n recalculate(parameters: EvaluationParameters) {\n this.properties = this._transitioning.possiblyEvaluate(parameters);\n }\n\n _validate(validate: Function, value: unknown, options?: {\n validate?: boolean;\n }) {\n if (options && options.validate === false) {\n return false;\n }\n\n return emitValidationErrors(this, validate.call(validateStyle, {\n value,\n // Workaround for https://github.com/mapbox/mapbox-gl-js/issues/2407\n style: {glyphs: true, sprite: true},\n styleSpec\n }));\n }\n}\n","import {DataConstantProperty, type PossiblyEvaluated, Properties, Transitionable, type Transitioning, type TransitionParameters} from './properties';\nimport {Evented} from '../util/evented';\nimport {EvaluationParameters} from './evaluation_parameters';\nimport {emitValidationErrors, validateSky, validateStyle} from './validate_style';\nimport {extend} from '../util/util';\nimport {type Color, latest as styleSpec} from '@maplibre/maplibre-gl-style-spec';\nimport {type Mesh} from '../render/mesh';\nimport type {StylePropertySpecification, SkySpecification} from '@maplibre/maplibre-gl-style-spec';\nimport type {StyleSetterOptions} from './style';\n\ntype SkyProps = {\n 'sky-color': DataConstantProperty;\n 'horizon-color': DataConstantProperty;\n 'fog-color': DataConstantProperty;\n 'fog-ground-blend': DataConstantProperty;\n 'horizon-fog-blend': DataConstantProperty;\n 'sky-horizon-blend': DataConstantProperty;\n 'atmosphere-blend': DataConstantProperty;\n};\n\ntype SkyPropsPossiblyEvaluated = {\n 'sky-color': Color;\n 'horizon-color': Color;\n 'fog-color': Color;\n 'fog-ground-blend': number;\n 'horizon-fog-blend': number;\n 'sky-horizon-blend': number;\n 'atmosphere-blend': number;\n};\n\nconst properties: Properties = new Properties({\n 'sky-color': new DataConstantProperty(styleSpec.sky['sky-color'] as StylePropertySpecification),\n 'horizon-color': new DataConstantProperty(styleSpec.sky['horizon-color'] as StylePropertySpecification),\n 'fog-color': new DataConstantProperty(styleSpec.sky['fog-color'] as StylePropertySpecification),\n 'fog-ground-blend': new DataConstantProperty(styleSpec.sky['fog-ground-blend'] as StylePropertySpecification),\n 'horizon-fog-blend': new DataConstantProperty(styleSpec.sky['horizon-fog-blend'] as StylePropertySpecification),\n 'sky-horizon-blend': new DataConstantProperty(styleSpec.sky['sky-horizon-blend'] as StylePropertySpecification),\n 'atmosphere-blend': new DataConstantProperty(styleSpec.sky['atmosphere-blend'] as StylePropertySpecification)\n});\n\nconst TRANSITION_SUFFIX = '-transition';\n\nexport class Sky extends Evented {\n properties: PossiblyEvaluated;\n\n /**\n * This is used to cache the gl mesh for the sky, it should be initialized only once.\n */\n mesh: Mesh | undefined;\n atmosphereMesh: Mesh | undefined;\n _transitionable: Transitionable;\n _transitioning: Transitioning;\n\n constructor(sky?: SkySpecification) {\n super();\n this._transitionable = new Transitionable(properties);\n this.setSky(sky);\n this._transitioning = this._transitionable.untransitioned();\n this.recalculate(new EvaluationParameters(0));\n }\n\n setSky(sky?: SkySpecification, options: StyleSetterOptions = {}) {\n if (this._validate(validateSky, sky, options)) return;\n\n if (!sky) {\n sky = {\n 'sky-color': 'transparent',\n 'horizon-color': 'transparent',\n 'fog-color': 'transparent',\n 'fog-ground-blend': 1,\n 'atmosphere-blend': 0,\n };\n }\n\n for (const name in sky) {\n const value = sky[name];\n if (name.endsWith(TRANSITION_SUFFIX)) {\n this._transitionable.setTransition(name.slice(0, -TRANSITION_SUFFIX.length) as keyof SkyProps, value);\n } else {\n this._transitionable.setValue(name as keyof SkyProps, value);\n }\n }\n }\n\n getSky(): SkySpecification {\n return this._transitionable.serialize();\n }\n\n updateTransitions(parameters: TransitionParameters) {\n this._transitioning = this._transitionable.transitioned(parameters, this._transitioning);\n }\n\n hasTransition() {\n return this._transitioning.hasTransition();\n }\n\n recalculate(parameters: EvaluationParameters) {\n this.properties = this._transitioning.possiblyEvaluate(parameters);\n }\n\n _validate(validate: Function, value: unknown, options: StyleSetterOptions = {}) {\n if (options?.validate === false) {\n return false;\n }\n return emitValidationErrors(this, validate.call(validateStyle, extend({\n value,\n // Workaround for https://github.com/mapbox/mapbox-gl-js/issues/2407\n style: {glyphs: true, sprite: true},\n styleSpec\n })));\n }\n\n /**\n * Currently fog is a very simple implementation, and should only used\n * to create an atmosphere near the horizon.\n * But because the fog is drawn from the far-clipping-plane to\n * map-center, and because the fog does nothing know about the horizon,\n * this method does a fadeout in respect of pitch. So, when the horizon\n * gets out of view, which is at about pitch 70, this methods calculates\n * the corresponding opacity values. Below pitch 60 the fog is completely\n * invisible.\n */\n calculateFogBlendOpacity(pitch: number) {\n if (pitch < 60) return 0; // disable\n if (pitch < 70) return (pitch - 60) / 10; // fade in\n return 1;\n }\n}\n","import {warnOnce} from '../util/util';\n\nimport type {Context} from '../gl/context';\n\n/**\n * A dash entry\n */\ntype DashEntry = {\n y: number;\n height: number;\n width: number;\n}\n\n/**\n * @internal\n * A LineAtlas lets us reuse rendered dashed lines\n * by writing many of them to a texture and then fetching their positions\n * using {@link LineAtlas#getDash}.\n *\n * @param width - the width\n * @param height - the height\n */\nexport class LineAtlas {\n width: number;\n height: number;\n nextRow: number;\n bytes: number;\n data: Uint8Array;\n dashEntry: {[_: string]: DashEntry};\n dirty: boolean;\n texture: WebGLTexture;\n\n constructor(width: number, height: number) {\n this.width = width;\n this.height = height;\n this.nextRow = 0;\n\n this.data = new Uint8Array(this.width * this.height);\n\n this.dashEntry = {};\n }\n\n /**\n * Get or create a dash line pattern.\n *\n * @param dasharray - the key (represented by numbers) to get the dash texture\n * @param round - whether to add circle caps in between dash segments\n * @returns position of dash texture in {@link DashEntry}\n */\n getDash(dasharray: Array, round: boolean) {\n const key = dasharray.join(',') + String(round);\n\n if (!this.dashEntry[key]) {\n this.dashEntry[key] = this.addDash(dasharray, round);\n }\n return this.dashEntry[key];\n }\n\n getDashRanges(dasharray: Array, lineAtlasWidth: number, stretch: number) {\n // If dasharray has an odd length, both the first and last parts\n // are dashes and should be joined seamlessly.\n const oddDashArray = dasharray.length % 2 === 1;\n\n const ranges = [];\n\n let left = oddDashArray ? -dasharray[dasharray.length - 1] * stretch : 0;\n let right = dasharray[0] * stretch;\n let isDash = true;\n\n ranges.push({left, right, isDash, zeroLength: dasharray[0] === 0});\n\n let currentDashLength = dasharray[0];\n for (let i = 1; i < dasharray.length; i++) {\n isDash = !isDash;\n\n const dashLength = dasharray[i];\n left = currentDashLength * stretch;\n currentDashLength += dashLength;\n right = currentDashLength * stretch;\n\n ranges.push({left, right, isDash, zeroLength: dashLength === 0});\n }\n\n return ranges;\n }\n\n addRoundDash(ranges: any, stretch: number, n: number) {\n const halfStretch = stretch / 2;\n\n for (let y = -n; y <= n; y++) {\n const row = this.nextRow + n + y;\n const index = this.width * row;\n let currIndex = 0;\n let range = ranges[currIndex];\n\n for (let x = 0; x < this.width; x++) {\n if (x / range.right > 1) { range = ranges[++currIndex]; }\n\n const distLeft = Math.abs(x - range.left);\n const distRight = Math.abs(x - range.right);\n const minDist = Math.min(distLeft, distRight);\n let signedDistance;\n\n const distMiddle = y / n * (halfStretch + 1);\n if (range.isDash) {\n const distEdge = halfStretch - Math.abs(distMiddle);\n signedDistance = Math.sqrt(minDist * minDist + distEdge * distEdge);\n } else {\n signedDistance = halfStretch - Math.sqrt(minDist * minDist + distMiddle * distMiddle);\n }\n\n this.data[index + x] = Math.max(0, Math.min(255, signedDistance + 128));\n }\n }\n }\n\n addRegularDash(ranges: any) {\n\n // Collapse any zero-length range\n // Collapse neighbouring same-type parts into a single part\n for (let i = ranges.length - 1; i >= 0; --i) {\n const part = ranges[i];\n const next = ranges[i + 1];\n if (part.zeroLength) {\n ranges.splice(i, 1);\n } else if (next && next.isDash === part.isDash) {\n next.left = part.left;\n ranges.splice(i, 1);\n }\n }\n\n // Combine the first and last parts if possible\n const first = ranges[0];\n const last = ranges[ranges.length - 1];\n if (first.isDash === last.isDash) {\n first.left = last.left - this.width;\n last.right = first.right + this.width;\n }\n\n const index = this.width * this.nextRow;\n let currIndex = 0;\n let range = ranges[currIndex];\n\n for (let x = 0; x < this.width; x++) {\n if (x / range.right > 1) {\n range = ranges[++currIndex];\n }\n\n const distLeft = Math.abs(x - range.left);\n const distRight = Math.abs(x - range.right);\n\n const minDist = Math.min(distLeft, distRight);\n const signedDistance = range.isDash ? minDist : -minDist;\n\n this.data[index + x] = Math.max(0, Math.min(255, signedDistance + 128));\n }\n }\n\n addDash(dasharray: Array, round: boolean): DashEntry {\n const n = round ? 7 : 0;\n const height = 2 * n + 1;\n\n if (this.nextRow + height > this.height) {\n warnOnce('LineAtlas out of space');\n return null;\n }\n\n let length = 0;\n for (let i = 0; i < dasharray.length; i++) { length += dasharray[i]; }\n\n if (length !== 0) {\n const stretch = this.width / length;\n const ranges = this.getDashRanges(dasharray, this.width, stretch);\n\n if (round) {\n this.addRoundDash(ranges, stretch, n);\n } else {\n this.addRegularDash(ranges);\n }\n }\n\n const dashEntry = {\n y: (this.nextRow + n + 0.5) / this.height,\n height: 2 * n / this.height,\n width: length\n };\n\n this.nextRow += height;\n this.dirty = true;\n\n return dashEntry;\n }\n\n bind(context: Context) {\n const gl = context.gl;\n if (!this.texture) {\n this.texture = gl.createTexture();\n gl.bindTexture(gl.TEXTURE_2D, this.texture);\n gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.REPEAT);\n gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.REPEAT);\n gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);\n gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);\n gl.texImage2D(gl.TEXTURE_2D, 0, gl.ALPHA, this.width, this.height, 0, gl.ALPHA, gl.UNSIGNED_BYTE, this.data);\n\n } else {\n gl.bindTexture(gl.TEXTURE_2D, this.texture);\n\n if (this.dirty) {\n this.dirty = false;\n gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, this.width, this.height, gl.ALPHA, gl.UNSIGNED_BYTE, this.data);\n }\n }\n }\n}\n","import {workerFactory} from './web_worker';\nimport {browser} from './browser';\nimport {isSafari} from './util';\nimport {type ActorTarget} from './actor';\n\nexport const PRELOAD_POOL_ID = 'maplibre_preloaded_worker_pool';\n\n/**\n * Constructs a worker pool.\n */\nexport class WorkerPool {\n static workerCount: number;\n\n active: {\n [_ in number | string]: boolean;\n };\n workers: Array;\n\n constructor() {\n this.active = {};\n }\n\n acquire(mapId: number | string): Array {\n if (!this.workers) {\n // Lazily look up the value of getWorkerCount so that\n // client code has had a chance to set it.\n this.workers = [];\n while (this.workers.length < WorkerPool.workerCount) {\n this.workers.push(workerFactory());\n }\n }\n\n this.active[mapId] = true;\n return this.workers.slice();\n }\n\n release(mapId: number | string) {\n delete this.active[mapId];\n if (this.numActive() === 0) {\n this.workers.forEach((w) => {\n w.terminate();\n });\n this.workers = null;\n }\n }\n\n isPreloaded(): boolean {\n return !!this.active[PRELOAD_POOL_ID];\n }\n\n numActive(): number {\n return Object.keys(this.active).length;\n }\n}\n\n// Based on results from A/B testing: https://github.com/maplibre/maplibre-gl-js/pull/2354\nconst availableLogicalProcessors = Math.floor(browser.hardwareConcurrency / 2);\nWorkerPool.workerCount = isSafari(globalThis) ? Math.max(Math.min(availableLogicalProcessors, 3), 1) : 1;\n","import {type AddProtocolAction, config} from './config';\nimport type {default as MaplibreWorker} from '../source/worker';\nimport type {WorkerSourceConstructor} from '../source/worker_source';\n\nexport interface WorkerGlobalScopeInterface {\n importScripts(...urls: Array): void;\n registerWorkerSource: (sourceName: string, sourceConstructor: WorkerSourceConstructor) => void;\n registerRTLTextPlugin: (_: any) => void;\n addProtocol: (customProtocol: string, loadFn: AddProtocolAction) => void;\n removeProtocol: (customProtocol: string) => void;\n worker: MaplibreWorker;\n}\n\nexport function workerFactory() {\n return new Worker(config.WORKER_URL);\n}\n","import {WorkerPool, PRELOAD_POOL_ID} from './worker_pool';\n\nlet globalWorkerPool;\n\n/**\n * Creates (if necessary) and returns the single, global WorkerPool instance\n * to be shared across each Map\n */\nexport function getGlobalWorkerPool() {\n if (!globalWorkerPool) {\n globalWorkerPool = new WorkerPool();\n }\n return globalWorkerPool;\n}\n\n/**\n * Initializes resources like WebWorkers that can be shared across maps to lower load\n * times in some situations. `setWorkerUrl()` and `setWorkerCount()`, if being\n * used, must be set before `prewarm()` is called to have an effect.\n *\n * By default, the lifecycle of these resources is managed automatically, and they are\n * lazily initialized when a Map is first created. By invoking `prewarm()`, these\n * resources will be created ahead of time, and will not be cleared when the last Map\n * is removed from the page. This allows them to be re-used by new Map instances that\n * are created later. They can be manually cleared by calling\n * `clearPrewarmedResources()`. This is only necessary if your web page remains\n * active but stops using maps altogether.\n *\n * This is primarily useful when using GL-JS maps in a single page app, wherein a user\n * would navigate between various views that can cause Map instances to constantly be\n * created and destroyed.\n *\n * @example\n * ```ts\n * prewarm()\n * ```\n */\nexport function prewarm() {\n const workerPool = getGlobalWorkerPool();\n workerPool.acquire(PRELOAD_POOL_ID);\n}\n\n/**\n * Clears up resources that have previously been created by `prewarm()`.\n * Note that this is typically not necessary. You should only call this function\n * if you expect the user of your app to not return to a Map view at any point\n * in your application.\n *\n * @example\n * ```ts\n * clearPrewarmedResources()\n * ```\n */\nexport function clearPrewarmedResources() {\n const pool = globalWorkerPool;\n if (pool) {\n // Remove the pool only if all maps that referenced the preloaded global worker pool have been removed.\n if (pool.isPreloaded() && pool.numActive() === 1) {\n pool.release(PRELOAD_POOL_ID);\n globalWorkerPool = null;\n } else {\n console.warn('Could not clear WebWorkers since there are active Map instances that still reference it. The pre-warmed WebWorker pool can only be cleared when all map instances have been removed with map.remove()');\n }\n }\n}\n","import {Actor, type MessageHandler} from './actor';\nimport {getGlobalWorkerPool} from './global_worker_pool';\nimport {GLOBAL_DISPATCHER_ID, makeRequest} from './ajax';\n\nimport type {WorkerPool} from './worker_pool';\nimport type {RequestResponseMessageMap} from './actor_messages';\nimport {MessageType} from './actor_messages';\n\n/**\n * Responsible for sending messages from a {@link Source} to an associated worker source (usually with the same name).\n */\nexport class Dispatcher {\n workerPool: WorkerPool;\n actors: Array;\n currentActor: number;\n id: string | number;\n\n constructor(workerPool: WorkerPool, mapId: string | number) {\n this.workerPool = workerPool;\n this.actors = [];\n this.currentActor = 0;\n this.id = mapId;\n const workers = this.workerPool.acquire(mapId);\n for (let i = 0; i < workers.length; i++) {\n const worker = workers[i];\n const actor = new Actor(worker, mapId);\n actor.name = `Worker ${i}`;\n this.actors.push(actor);\n }\n if (!this.actors.length) throw new Error('No actors found');\n }\n\n /**\n * Broadcast a message to all Workers.\n */\n broadcast(type: T, data: RequestResponseMessageMap[T][0]): Promise {\n const promises: Promise[] = [];\n for (const actor of this.actors) {\n promises.push(actor.sendAsync({type, data}));\n }\n return Promise.all(promises);\n }\n\n /**\n * Acquires an actor to dispatch messages to. The actors are distributed in round-robin fashion.\n * @returns An actor object backed by a web worker for processing messages.\n */\n getActor(): Actor {\n this.currentActor = (this.currentActor + 1) % this.actors.length;\n return this.actors[this.currentActor];\n }\n\n remove(mapRemoved: boolean = true) {\n this.actors.forEach((actor) => { actor.remove(); });\n this.actors = [];\n if (mapRemoved) this.workerPool.release(this.id);\n }\n\n public registerMessageHandler(type: T, handler: MessageHandler) {\n for (const actor of this.actors) {\n actor.registerMessageHandler(type, handler);\n }\n }\n}\n\nlet globalDispatcher: Dispatcher;\n\nexport function getGlobalDispatcher(): Dispatcher {\n if (!globalDispatcher) {\n globalDispatcher = new Dispatcher(getGlobalWorkerPool(), GLOBAL_DISPATCHER_ID);\n globalDispatcher.registerMessageHandler(MessageType.getResource, (_mapId, params, abortController) => {\n return makeRequest(params, abortController);\n });\n }\n return globalDispatcher;\n}\n","import type {SourceCache} from './source_cache';\nimport type {StyleLayer} from '../style/style_layer';\nimport type {CollisionIndex} from '../symbol/collision_index';\nimport type {IReadonlyTransform} from '../geo/transform_interface';\nimport type {RetainedQueryData} from '../symbol/placement';\nimport type {FilterSpecification} from '@maplibre/maplibre-gl-style-spec';\nimport type {MapGeoJSONFeature} from '../util/vectortile_to_geojson';\nimport type Point from '@mapbox/point-geometry';\nimport {mat4} from 'gl-matrix';\n\n/**\n * Options to pass to query the map for the rendered features\n */\nexport type QueryRenderedFeaturesOptions = {\n /**\n * An array or set of [style layer IDs](https://maplibre.org/maplibre-style-spec/#layer-id) for the query to inspect.\n * Only features within these layers will be returned. If this parameter is undefined, all layers will be checked.\n */\n layers?: Array | Set;\n /**\n * A [filter](https://maplibre.org/maplibre-style-spec/layers/#filter) to limit query results.\n */\n filter?: FilterSpecification;\n /**\n * An array of string representing the available images\n */\n availableImages?: Array;\n /**\n * Whether to check if the [options.filter] conforms to the MapLibre Style Specification. Disabling validation is a performance optimization that should only be used if you have previously validated the values you will be passing to this function.\n */\n validate?: boolean;\n};\n\nexport type QueryRenderedFeaturesOptionsStrict = Omit & {\n layers: Set | null;\n}\n\n/**\n * The options object related to the {@link Map#querySourceFeatures} method\n */\nexport type QuerySourceFeatureOptions = {\n /**\n * The name of the source layer to query. *For vector tile sources, this parameter is required.* For GeoJSON sources, it is ignored.\n */\n sourceLayer?: string;\n /**\n * A [filter](https://maplibre.org/maplibre-style-spec/layers/#filter)\n * to limit query results.\n */\n filter?: FilterSpecification;\n /**\n * Whether to check if the [parameters.filter] conforms to the MapLibre Style Specification. Disabling validation is a performance optimization that should only be used if you have previously validated the values you will be passing to this function.\n * @defaultValue true\n */\n validate?: boolean;\n}\n\n/*\n * Returns a matrix that can be used to convert from tile coordinates to viewport pixel coordinates.\n */\nfunction getPixelPosMatrix(transform, tileID) {\n const t = mat4.create();\n mat4.translate(t, t, [1, 1, 0]);\n mat4.scale(t, t, [transform.width * 0.5, transform.height * 0.5, 1]);\n if (transform.calculatePosMatrix) { // Globe: TODO: remove this hack once queryRendererFeatures supports globe properly\n return mat4.multiply(t, t, transform.calculatePosMatrix(tileID.toUnwrapped()));\n } else {\n return t;\n }\n}\n\nfunction queryIncludes3DLayer(layers: Set | undefined, styleLayers: {[_: string]: StyleLayer}, sourceID: string) {\n if (layers) {\n for (const layerID of layers) {\n const layer = styleLayers[layerID];\n if (layer && layer.source === sourceID && layer.type === 'fill-extrusion') {\n return true;\n }\n }\n } else {\n for (const key in styleLayers) {\n const layer = styleLayers[key];\n if (layer.source === sourceID && layer.type === 'fill-extrusion') {\n return true;\n }\n }\n }\n return false;\n}\n\nexport function queryRenderedFeatures(\n sourceCache: SourceCache,\n styleLayers: {[_: string]: StyleLayer},\n serializedLayers: {[_: string]: any},\n queryGeometry: Array,\n params: QueryRenderedFeaturesOptionsStrict | undefined,\n transform: IReadonlyTransform\n): { [key: string]: Array<{featureIndex: number; feature: MapGeoJSONFeature}> } {\n\n const has3DLayer = queryIncludes3DLayer(params?.layers ?? null, styleLayers, sourceCache.id);\n const maxPitchScaleFactor = transform.maxPitchScaleFactor();\n const tilesIn = sourceCache.tilesIn(queryGeometry, maxPitchScaleFactor, has3DLayer);\n\n tilesIn.sort(sortTilesIn);\n const renderedFeatureLayers = [];\n for (const tileIn of tilesIn) {\n renderedFeatureLayers.push({\n wrappedTileID: tileIn.tileID.wrapped().key,\n queryResults: tileIn.tile.queryRenderedFeatures(\n styleLayers,\n serializedLayers,\n sourceCache._state,\n tileIn.queryGeometry,\n tileIn.cameraQueryGeometry,\n tileIn.scale,\n params,\n transform,\n maxPitchScaleFactor,\n getPixelPosMatrix(sourceCache.transform, tileIn.tileID))\n });\n }\n\n const result = mergeRenderedFeatureLayers(renderedFeatureLayers);\n\n // Merge state from SourceCache into the results\n for (const layerID in result) {\n result[layerID].forEach((featureWrapper) => {\n const feature = featureWrapper.feature as MapGeoJSONFeature;\n const state = sourceCache.getFeatureState(feature.layer['source-layer'], feature.id);\n feature.source = feature.layer.source;\n if (feature.layer['source-layer']) {\n feature.sourceLayer = feature.layer['source-layer'];\n }\n feature.state = state;\n });\n }\n return result;\n}\n\nexport function queryRenderedSymbols(styleLayers: {[_: string]: StyleLayer},\n serializedLayers: {[_: string]: StyleLayer},\n sourceCaches: {[_: string]: SourceCache},\n queryGeometry: Array,\n params: QueryRenderedFeaturesOptionsStrict,\n collisionIndex: CollisionIndex,\n retainedQueryData: {\n [_: number]: RetainedQueryData;\n }) {\n const result = {};\n const renderedSymbols = collisionIndex.queryRenderedSymbols(queryGeometry);\n const bucketQueryData: RetainedQueryData[] = [];\n for (const bucketInstanceId of Object.keys(renderedSymbols).map(Number)) {\n bucketQueryData.push(retainedQueryData[bucketInstanceId]);\n }\n bucketQueryData.sort(sortTilesIn);\n\n for (const queryData of bucketQueryData) {\n const bucketSymbols = queryData.featureIndex.lookupSymbolFeatures(\n renderedSymbols[queryData.bucketInstanceId],\n serializedLayers,\n queryData.bucketIndex,\n queryData.sourceLayerIndex,\n params.filter,\n params.layers,\n params.availableImages,\n styleLayers);\n\n for (const layerID in bucketSymbols) {\n const resultFeatures = result[layerID] = result[layerID] || [];\n const layerSymbols = bucketSymbols[layerID];\n layerSymbols.sort((a, b) => {\n // Match topDownFeatureComparator from FeatureIndex, but using\n // most recent sorting of features from bucket.sortFeatures\n const featureSortOrder = queryData.featureSortOrder;\n if (featureSortOrder) {\n // queryRenderedSymbols documentation says we'll return features in\n // \"top-to-bottom\" rendering order (aka last-to-first).\n // Actually there can be multiple symbol instances per feature, so\n // we sort each feature based on the first matching symbol instance.\n const sortedA = featureSortOrder.indexOf(a.featureIndex);\n const sortedB = featureSortOrder.indexOf(b.featureIndex);\n return sortedB - sortedA;\n } else {\n // Bucket hasn't been re-sorted based on angle, so use the\n // reverse of the order the features appeared in the data.\n return b.featureIndex - a.featureIndex;\n }\n });\n for (const symbolFeature of layerSymbols) {\n resultFeatures.push(symbolFeature);\n }\n }\n }\n\n // Merge state from SourceCache into the results\n for (const layerName in result) {\n result[layerName].forEach((featureWrapper) => {\n const feature = featureWrapper.feature;\n const layer = styleLayers[layerName];\n const sourceCache = sourceCaches[layer.source];\n const state = sourceCache.getFeatureState(feature.layer['source-layer'], feature.id);\n feature.source = feature.layer.source;\n if (feature.layer['source-layer']) {\n feature.sourceLayer = feature.layer['source-layer'];\n }\n feature.state = state;\n });\n }\n return result;\n}\n\nexport function querySourceFeatures(sourceCache: SourceCache, params: QuerySourceFeatureOptions | undefined) {\n const tiles = sourceCache.getRenderableIds().map((id) => {\n return sourceCache.getTileByID(id);\n });\n\n const result = [];\n\n const dataTiles = {};\n for (let i = 0; i < tiles.length; i++) {\n const tile = tiles[i];\n const dataID = tile.tileID.canonical.key;\n if (!dataTiles[dataID]) {\n dataTiles[dataID] = true;\n tile.querySourceFeatures(result, params);\n }\n }\n\n return result;\n}\n\nfunction sortTilesIn(a, b) {\n const idA = a.tileID;\n const idB = b.tileID;\n return (idA.overscaledZ - idB.overscaledZ) || (idA.canonical.y - idB.canonical.y) || (idA.wrap - idB.wrap) || (idA.canonical.x - idB.canonical.x);\n}\n\nfunction mergeRenderedFeatureLayers(tiles) {\n // Merge results from all tiles, but if two tiles share the same\n // wrapped ID, don't duplicate features between the two tiles\n const result = {};\n const wrappedIDLayerMap = {};\n for (const tile of tiles) {\n const queryResults = tile.queryResults;\n const wrappedID = tile.wrappedTileID;\n const wrappedIDLayers = wrappedIDLayerMap[wrappedID] = wrappedIDLayerMap[wrappedID] || {};\n for (const layerID in queryResults) {\n const tileFeatures = queryResults[layerID];\n const wrappedIDFeatures = wrappedIDLayers[layerID] = wrappedIDLayers[layerID] || {};\n const resultFeatures = result[layerID] = result[layerID] || [];\n for (const tileFeature of tileFeatures) {\n if (!wrappedIDFeatures[tileFeature.featureIndex]) {\n wrappedIDFeatures[tileFeature.featureIndex] = true;\n resultFeatures.push(tileFeature);\n }\n }\n }\n }\n return result;\n}\n","import {pick, extend, type TileJSON} from '../util/util';\nimport {getJSON} from '../util/ajax';\nimport {ResourceType} from '../util/request_manager';\nimport {browser} from '../util/browser';\n\nimport type {RequestManager} from '../util/request_manager';\nimport type {RasterDEMSourceSpecification, RasterSourceSpecification, VectorSourceSpecification} from '@maplibre/maplibre-gl-style-spec';\n\nexport type LoadTileJsonResponse = {\n tiles: Array;\n minzoom: number;\n maxzoom: number;\n attribution: string;\n bounds: RasterSourceSpecification['bounds'];\n scheme: RasterSourceSpecification['scheme'];\n tileSize: number;\n encoding: RasterDEMSourceSpecification['encoding'];\n vectorLayerIds?: Array;\n}\n\nexport async function loadTileJson(\n options: RasterSourceSpecification | RasterDEMSourceSpecification | VectorSourceSpecification,\n requestManager: RequestManager,\n abortController: AbortController,\n): Promise {\n let tileJSON: TileJSON | typeof options = options;\n if (options.url) {\n const response = await getJSON(requestManager.transformRequest(options.url, ResourceType.Source), abortController);\n tileJSON = response.data;\n } else {\n await browser.frameAsync(abortController);\n }\n if (!tileJSON) {\n return null;\n }\n const result = pick(\n // explicit source options take precedence over TileJSON\n extend(tileJSON, options),\n ['tiles', 'minzoom', 'maxzoom', 'attribution', 'bounds', 'scheme', 'tileSize', 'encoding']\n ) as LoadTileJsonResponse;\n\n if ('vector_layers' in tileJSON && tileJSON.vector_layers) {\n result.vectorLayerIds = tileJSON.vector_layers.map((layer) => { return layer.id; });\n }\n\n return result;\n}\n","import {LngLat} from './lng_lat';\nimport type {LngLatLike} from './lng_lat';\n\n/**\n * A {@link LngLatBounds} object, an array of {@link LngLatLike} objects in [sw, ne] order,\n * or an array of numbers in [west, south, east, north] order.\n *\n * @group Geography and Geometry\n *\n * @example\n * ```ts\n * let v1 = new LngLatBounds(\n * new LngLat(-73.9876, 40.7661),\n * new LngLat(-73.9397, 40.8002)\n * );\n * let v2 = new LngLatBounds([-73.9876, 40.7661], [-73.9397, 40.8002])\n * let v3 = [[-73.9876, 40.7661], [-73.9397, 40.8002]];\n * ```\n */\nexport type LngLatBoundsLike = LngLatBounds | [LngLatLike, LngLatLike] | [number, number, number, number];\n\n/**\n * A `LngLatBounds` object represents a geographical bounding box,\n * defined by its southwest and northeast points in longitude and latitude.\n *\n * If no arguments are provided to the constructor, a `null` bounding box is created.\n *\n * Note that any Mapbox GL method that accepts a `LngLatBounds` object as an argument or option\n * can also accept an `Array` of two {@link LngLatLike} constructs and will perform an implicit conversion.\n * This flexible type is documented as {@link LngLatBoundsLike}.\n *\n * @group Geography and Geometry\n *\n * @example\n * ```ts\n * let sw = new LngLat(-73.9876, 40.7661);\n * let ne = new LngLat(-73.9397, 40.8002);\n * let llb = new LngLatBounds(sw, ne);\n * ```\n */\nexport class LngLatBounds {\n _ne: LngLat;\n _sw: LngLat;\n\n /**\n * @param sw - The southwest corner of the bounding box.\n * OR array of 4 numbers in the order of west, south, east, north\n * OR array of 2 LngLatLike: [sw,ne]\n * @param ne - The northeast corner of the bounding box.\n * @example\n * ```ts\n * let sw = new LngLat(-73.9876, 40.7661);\n * let ne = new LngLat(-73.9397, 40.8002);\n * let llb = new LngLatBounds(sw, ne);\n * ```\n * OR\n * ```ts\n * let llb = new LngLatBounds([-73.9876, 40.7661, -73.9397, 40.8002]);\n * ```\n * OR\n * ```ts\n * let llb = new LngLatBounds([sw, ne]);\n * ```\n */\n constructor(sw?: LngLatLike | [number, number, number, number] | [LngLatLike, LngLatLike], ne?: LngLatLike) {\n if (!sw) {\n // noop\n } else if (ne) {\n this.setSouthWest(sw).setNorthEast(ne);\n } else if (Array.isArray(sw)) {\n if (sw.length === 4) {\n // 4 element array: west, south, east, north\n this.setSouthWest([sw[0], sw[1]]).setNorthEast([sw[2], sw[3]]);\n } else {\n this.setSouthWest(sw[0] as LngLatLike).setNorthEast(sw[1] as LngLatLike);\n }\n }\n }\n\n /**\n * Set the northeast corner of the bounding box\n *\n * @param ne - a {@link LngLatLike} object describing the northeast corner of the bounding box.\n */\n setNorthEast(ne: LngLatLike): this {\n this._ne = ne instanceof LngLat ? new LngLat(ne.lng, ne.lat) : LngLat.convert(ne);\n return this;\n }\n\n /**\n * Set the southwest corner of the bounding box\n *\n * @param sw - a {@link LngLatLike} object describing the southwest corner of the bounding box.\n */\n setSouthWest(sw: LngLatLike): this {\n this._sw = sw instanceof LngLat ? new LngLat(sw.lng, sw.lat) : LngLat.convert(sw);\n return this;\n }\n\n /**\n * Extend the bounds to include a given LngLatLike or LngLatBoundsLike.\n *\n * @param obj - object to extend to\n */\n extend(obj: LngLatLike | LngLatBoundsLike): this {\n const sw = this._sw,\n ne = this._ne;\n let sw2, ne2;\n\n if (obj instanceof LngLat) {\n sw2 = obj;\n ne2 = obj;\n\n } else if (obj instanceof LngLatBounds) {\n sw2 = obj._sw;\n ne2 = obj._ne;\n\n if (!sw2 || !ne2) return this;\n\n } else {\n if (Array.isArray(obj)) {\n if (obj.length === 4 || (obj as any[]).every(Array.isArray)) {\n const lngLatBoundsObj = (obj as any as LngLatBoundsLike);\n return this.extend(LngLatBounds.convert(lngLatBoundsObj));\n } else {\n const lngLatObj = (obj as any as LngLatLike);\n return this.extend(LngLat.convert(lngLatObj));\n }\n\n } else if (obj && ('lng' in obj || 'lon' in obj) && 'lat' in obj) {\n return this.extend(LngLat.convert(obj));\n }\n\n return this;\n }\n\n if (!sw && !ne) {\n this._sw = new LngLat(sw2.lng, sw2.lat);\n this._ne = new LngLat(ne2.lng, ne2.lat);\n\n } else {\n sw.lng = Math.min(sw2.lng, sw.lng);\n sw.lat = Math.min(sw2.lat, sw.lat);\n ne.lng = Math.max(ne2.lng, ne.lng);\n ne.lat = Math.max(ne2.lat, ne.lat);\n }\n\n return this;\n }\n\n /**\n * Returns the geographical coordinate equidistant from the bounding box's corners.\n *\n * @returns The bounding box's center.\n * @example\n * ```ts\n * let llb = new LngLatBounds([-73.9876, 40.7661], [-73.9397, 40.8002]);\n * llb.getCenter(); // = LngLat {lng: -73.96365, lat: 40.78315}\n * ```\n */\n getCenter(): LngLat {\n return new LngLat((this._sw.lng + this._ne.lng) / 2, (this._sw.lat + this._ne.lat) / 2);\n }\n\n /**\n * Returns the southwest corner of the bounding box.\n *\n * @returns The southwest corner of the bounding box.\n */\n getSouthWest(): LngLat { return this._sw; }\n\n /**\n * Returns the northeast corner of the bounding box.\n *\n * @returns The northeast corner of the bounding box.\n */\n getNorthEast(): LngLat { return this._ne; }\n\n /**\n * Returns the northwest corner of the bounding box.\n *\n * @returns The northwest corner of the bounding box.\n */\n getNorthWest(): LngLat { return new LngLat(this.getWest(), this.getNorth()); }\n\n /**\n * Returns the southeast corner of the bounding box.\n *\n * @returns The southeast corner of the bounding box.\n */\n getSouthEast(): LngLat { return new LngLat(this.getEast(), this.getSouth()); }\n\n /**\n * Returns the west edge of the bounding box.\n *\n * @returns The west edge of the bounding box.\n */\n getWest(): number { return this._sw.lng; }\n\n /**\n * Returns the south edge of the bounding box.\n *\n * @returns The south edge of the bounding box.\n */\n getSouth(): number { return this._sw.lat; }\n\n /**\n * Returns the east edge of the bounding box.\n *\n * @returns The east edge of the bounding box.\n */\n getEast(): number { return this._ne.lng; }\n\n /**\n * Returns the north edge of the bounding box.\n *\n * @returns The north edge of the bounding box.\n */\n getNorth(): number { return this._ne.lat; }\n\n /**\n * Returns the bounding box represented as an array.\n *\n * @returns The bounding box represented as an array, consisting of the\n * southwest and northeast coordinates of the bounding represented as arrays of numbers.\n * @example\n * ```ts\n * let llb = new LngLatBounds([-73.9876, 40.7661], [-73.9397, 40.8002]);\n * llb.toArray(); // = [[-73.9876, 40.7661], [-73.9397, 40.8002]]\n * ```\n */\n toArray() {\n return [this._sw.toArray(), this._ne.toArray()];\n }\n\n /**\n * Return the bounding box represented as a string.\n *\n * @returns The bounding box represents as a string of the format\n * `'LngLatBounds(LngLat(lng, lat), LngLat(lng, lat))'`.\n * @example\n * ```ts\n * let llb = new LngLatBounds([-73.9876, 40.7661], [-73.9397, 40.8002]);\n * llb.toString(); // = \"LngLatBounds(LngLat(-73.9876, 40.7661), LngLat(-73.9397, 40.8002))\"\n * ```\n */\n toString() {\n return `LngLatBounds(${this._sw.toString()}, ${this._ne.toString()})`;\n }\n\n /**\n * Check if the bounding box is an empty/`null`-type box.\n *\n * @returns True if bounds have been defined, otherwise false.\n */\n isEmpty() {\n return !(this._sw && this._ne);\n }\n\n /**\n * Check if the point is within the bounding box.\n *\n * @param lnglat - geographic point to check against.\n * @returns `true` if the point is within the bounding box.\n * @example\n * ```ts\n * let llb = new LngLatBounds(\n * new LngLat(-73.9876, 40.7661),\n * new LngLat(-73.9397, 40.8002)\n * );\n *\n * let ll = new LngLat(-73.9567, 40.7789);\n *\n * console.log(llb.contains(ll)); // = true\n * ```\n */\n contains(lnglat: LngLatLike) {\n const {lng, lat} = LngLat.convert(lnglat);\n\n const containsLatitude = this._sw.lat <= lat && lat <= this._ne.lat;\n let containsLongitude = this._sw.lng <= lng && lng <= this._ne.lng;\n if (this._sw.lng > this._ne.lng) { // wrapped coordinates\n containsLongitude = this._sw.lng >= lng && lng >= this._ne.lng;\n }\n\n return containsLatitude && containsLongitude;\n }\n\n /**\n * Converts an array to a `LngLatBounds` object.\n *\n * If a `LngLatBounds` object is passed in, the function returns it unchanged.\n *\n * Internally, the function calls `LngLat#convert` to convert arrays to `LngLat` values.\n *\n * @param input - An array of two coordinates to convert, or a `LngLatBounds` object to return.\n * @returns A new `LngLatBounds` object, if a conversion occurred, or the original `LngLatBounds` object.\n * @example\n * ```ts\n * let arr = [[-73.9876, 40.7661], [-73.9397, 40.8002]];\n * let llb = LngLatBounds.convert(arr); // = LngLatBounds {_sw: LngLat {lng: -73.9876, lat: 40.7661}, _ne: LngLat {lng: -73.9397, lat: 40.8002}}\n * ```\n */\n static convert(input: LngLatBoundsLike | null): LngLatBounds {\n if (input instanceof LngLatBounds) return input;\n if (!input) return input as null;\n return new LngLatBounds(input);\n }\n\n /**\n * Returns a `LngLatBounds` from the coordinates extended by a given `radius`. The returned `LngLatBounds` completely contains the `radius`.\n *\n * @param center - center coordinates of the new bounds.\n * @param radius - Distance in meters from the coordinates to extend the bounds.\n * @returns A new `LngLatBounds` object representing the coordinates extended by the `radius`.\n * @example\n * ```ts\n * let center = new LngLat(-73.9749, 40.7736);\n * LngLatBounds.fromLngLat(100).toArray(); // = [[-73.97501862141328, 40.77351016847229], [-73.97478137858673, 40.77368983152771]]\n * ```\n */\n static fromLngLat(center: LngLat, radius:number = 0): LngLatBounds {\n const earthCircumferenceInMetersAtEquator = 40075017;\n const latAccuracy = 360 * radius / earthCircumferenceInMetersAtEquator,\n lngAccuracy = latAccuracy / Math.cos((Math.PI / 180) * center.lat);\n\n return new LngLatBounds(new LngLat(center.lng - lngAccuracy, center.lat - latAccuracy),\n new LngLat(center.lng + lngAccuracy, center.lat + latAccuracy));\n }\n\n /**\n * Adjusts the given bounds to handle the case where the bounds cross the 180th meridian (antimeridian).\n *\n * @returns The adjusted LngLatBounds\n * @example\n * ```ts\n * let bounds = new LngLatBounds([175.813127, -20.157768], [-178. 340903, -15.449124]);\n * let adjustedBounds = bounds.adjustAntiMeridian();\n * // adjustedBounds will be: [[175.813127, -20.157768], [181.659097, -15.449124]]\n * ```\n */\n adjustAntiMeridian(): LngLatBounds {\n const sw = new LngLat(this._sw.lng, this._sw.lat);\n const ne = new LngLat(this._ne.lng, this._ne.lat);\n\n if (sw.lng > ne.lng) {\n return new LngLatBounds(\n sw,\n new LngLat(ne.lng + 360, ne.lat)\n );\n }\n\n return new LngLatBounds(sw, ne);\n }\n\n}\n","import {LngLatBounds, type LngLatBoundsLike} from '../geo/lng_lat_bounds';\nimport {mercatorXfromLng, mercatorYfromLat} from '../geo/mercator_coordinate';\n\nimport type {CanonicalTileID} from './tile_id';\n\nexport class TileBounds {\n bounds: LngLatBounds;\n minzoom: number;\n maxzoom: number;\n\n constructor(bounds: [number, number, number, number], minzoom?: number | null, maxzoom?: number | null) {\n this.bounds = LngLatBounds.convert(this.validateBounds(bounds));\n this.minzoom = minzoom || 0;\n this.maxzoom = maxzoom || 24;\n }\n\n validateBounds(bounds: [number, number, number, number]): LngLatBoundsLike {\n // make sure the bounds property contains valid longitude and latitudes\n if (!Array.isArray(bounds) || bounds.length !== 4) return [-180, -90, 180, 90];\n return [Math.max(-180, bounds[0]), Math.max(-90, bounds[1]), Math.min(180, bounds[2]), Math.min(90, bounds[3])];\n }\n\n contains(tileID: CanonicalTileID) {\n const worldSize = Math.pow(2, tileID.z);\n const level = {\n minX: Math.floor(mercatorXfromLng(this.bounds.getWest()) * worldSize),\n minY: Math.floor(mercatorYfromLat(this.bounds.getNorth()) * worldSize),\n maxX: Math.ceil(mercatorXfromLng(this.bounds.getEast()) * worldSize),\n maxY: Math.ceil(mercatorYfromLat(this.bounds.getSouth()) * worldSize)\n };\n const hit = tileID.x >= level.minX && tileID.x < level.maxX && tileID.y >= level.minY && tileID.y < level.maxY;\n return hit;\n }\n}\n","import {Event, ErrorEvent, Evented} from '../util/evented';\n\nimport {extend, pick} from '../util/util';\nimport {loadTileJson} from './load_tilejson';\nimport {TileBounds} from './tile_bounds';\nimport {ResourceType} from '../util/request_manager';\n\nimport type {Source} from './source';\nimport type {OverscaledTileID} from './tile_id';\nimport type {Map} from '../ui/map';\nimport type {Dispatcher} from '../util/dispatcher';\nimport type {Tile} from './tile';\nimport type {VectorSourceSpecification, PromoteIdSpecification} from '@maplibre/maplibre-gl-style-spec';\nimport type {WorkerTileParameters, WorkerTileResult} from './worker_source';\nimport {MessageType} from '../util/actor_messages';\n\nexport type VectorTileSourceOptions = VectorSourceSpecification & {\n collectResourceTiming?: boolean;\n tileSize?: number;\n}\n\n/**\n * A source containing vector tiles in [Mapbox Vector Tile format](https://docs.mapbox.com/vector-tiles/reference/).\n * (See the [Style Specification](https://maplibre.org/maplibre-style-spec/) for detailed documentation of options.)\n *\n * @group Sources\n *\n * @example\n * ```ts\n * map.addSource('some id', {\n * type: 'vector',\n * url: 'https://demotiles.maplibre.org/tiles/tiles.json'\n * });\n * ```\n *\n * @example\n * ```ts\n * map.addSource('some id', {\n * type: 'vector',\n * tiles: ['https://d25uarhxywzl1j.cloudfront.net/v0.1/{z}/{x}/{y}.mvt'],\n * minzoom: 6,\n * maxzoom: 14\n * });\n * ```\n *\n * @example\n * ```ts\n * map.getSource('some id').setUrl(\"https://demotiles.maplibre.org/tiles/tiles.json\");\n * ```\n *\n * @example\n * ```ts\n * map.getSource('some id').setTiles(['https://d25uarhxywzl1j.cloudfront.net/v0.1/{z}/{x}/{y}.mvt']);\n * ```\n * @see [Add a vector tile source](https://maplibre.org/maplibre-gl-js/docs/examples/vector-source/)\n */\nexport class VectorTileSource extends Evented implements Source {\n type: 'vector';\n id: string;\n minzoom: number;\n maxzoom: number;\n url: string;\n scheme: string;\n tileSize: number;\n promoteId: PromoteIdSpecification;\n\n _options: VectorSourceSpecification;\n _collectResourceTiming: boolean;\n dispatcher: Dispatcher;\n map: Map;\n bounds: [number, number, number, number];\n tiles: Array;\n tileBounds: TileBounds;\n reparseOverscaled: boolean;\n isTileClipped: boolean;\n _tileJSONRequest: AbortController;\n _loaded: boolean;\n\n constructor(id: string, options: VectorTileSourceOptions, dispatcher: Dispatcher, eventedParent: Evented) {\n super();\n this.id = id;\n this.dispatcher = dispatcher;\n\n this.type = 'vector';\n this.minzoom = 0;\n this.maxzoom = 22;\n this.scheme = 'xyz';\n this.tileSize = 512;\n this.reparseOverscaled = true;\n this.isTileClipped = true;\n this._loaded = false;\n\n extend(this, pick(options, ['url', 'scheme', 'tileSize', 'promoteId']));\n this._options = extend({type: 'vector'}, options);\n\n this._collectResourceTiming = options.collectResourceTiming;\n\n if (this.tileSize !== 512) {\n throw new Error('vector tile sources must have a tileSize of 512');\n }\n\n this.setEventedParent(eventedParent);\n }\n\n async load() {\n this._loaded = false;\n this.fire(new Event('dataloading', {dataType: 'source'}));\n this._tileJSONRequest = new AbortController();\n try {\n const tileJSON = await loadTileJson(this._options, this.map._requestManager, this._tileJSONRequest);\n this._tileJSONRequest = null;\n this._loaded = true;\n this.map.style.sourceCaches[this.id].clearTiles();\n if (tileJSON) {\n extend(this, tileJSON);\n if (tileJSON.bounds) this.tileBounds = new TileBounds(tileJSON.bounds, this.minzoom, this.maxzoom);\n\n // `content` is included here to prevent a race condition where `Style#_updateSources` is called\n // before the TileJSON arrives. this makes sure the tiles needed are loaded once TileJSON arrives\n // ref: https://github.com/mapbox/mapbox-gl-js/pull/4347#discussion_r104418088\n this.fire(new Event('data', {dataType: 'source', sourceDataType: 'metadata'}));\n this.fire(new Event('data', {dataType: 'source', sourceDataType: 'content'}));\n }\n } catch (err) {\n this._tileJSONRequest = null;\n this.fire(new ErrorEvent(err));\n }\n }\n\n loaded(): boolean {\n return this._loaded;\n }\n\n hasTile(tileID: OverscaledTileID) {\n return !this.tileBounds || this.tileBounds.contains(tileID.canonical);\n }\n\n onAdd(map: Map) {\n this.map = map;\n this.load();\n }\n\n setSourceProperty(callback: Function) {\n if (this._tileJSONRequest) {\n this._tileJSONRequest.abort();\n }\n\n callback();\n\n this.load();\n }\n\n /**\n * Sets the source `tiles` property and re-renders the map.\n *\n * @param tiles - An array of one or more tile source URLs, as in the TileJSON spec.\n */\n setTiles(tiles: Array): this {\n this.setSourceProperty(() => {\n this._options.tiles = tiles;\n });\n\n return this;\n }\n\n /**\n * Sets the source `url` property and re-renders the map.\n *\n * @param url - A URL to a TileJSON resource. Supported protocols are `http:` and `https:`.\n */\n setUrl(url: string): this {\n this.setSourceProperty(() => {\n this.url = url;\n this._options.url = url;\n });\n\n return this;\n }\n\n onRemove() {\n if (this._tileJSONRequest) {\n this._tileJSONRequest.abort();\n this._tileJSONRequest = null;\n }\n }\n\n serialize(): VectorSourceSpecification {\n return extend({}, this._options);\n }\n\n async loadTile(tile: Tile): Promise {\n const url = tile.tileID.canonical.url(this.tiles, this.map.getPixelRatio(), this.scheme);\n const params: WorkerTileParameters = {\n request: this.map._requestManager.transformRequest(url, ResourceType.Tile),\n uid: tile.uid,\n tileID: tile.tileID,\n zoom: tile.tileID.overscaledZ,\n tileSize: this.tileSize * tile.tileID.overscaleFactor(),\n type: this.type,\n source: this.id,\n pixelRatio: this.map.getPixelRatio(),\n showCollisionBoxes: this.map.showCollisionBoxes,\n promoteId: this.promoteId,\n subdivisionGranularity: this.map.style.projection.subdivisionGranularity\n };\n params.request.collectResourceTiming = this._collectResourceTiming;\n let messageType: MessageType.loadTile | MessageType.reloadTile = MessageType.reloadTile;\n if (!tile.actor || tile.state === 'expired') {\n tile.actor = this.dispatcher.getActor();\n messageType = MessageType.loadTile;\n } else if (tile.state === 'loading') {\n return new Promise((resolve, reject) => {\n tile.reloadPromise = {resolve, reject};\n });\n }\n tile.abortController = new AbortController();\n try {\n const data = await tile.actor.sendAsync({type: messageType, data: params}, tile.abortController);\n delete tile.abortController;\n\n if (tile.aborted) {\n return;\n }\n this._afterTileLoadWorkerResponse(tile, data);\n } catch (err) {\n delete tile.abortController;\n\n if (tile.aborted) {\n return;\n }\n if (err && err.status !== 404) {\n throw err;\n }\n this._afterTileLoadWorkerResponse(tile, null);\n }\n }\n\n private _afterTileLoadWorkerResponse(tile: Tile, data: WorkerTileResult) {\n if (data && data.resourceTiming) {\n tile.resourceTiming = data.resourceTiming;\n }\n\n if (data && this.map._refreshExpiredTiles) {\n tile.setExpiryData(data);\n }\n tile.loadVectorData(data, this.map.painter);\n\n if (tile.reloadPromise) {\n const reloadPromise = tile.reloadPromise;\n tile.reloadPromise = null;\n this.loadTile(tile).then(reloadPromise.resolve).catch(reloadPromise.reject);\n }\n }\n\n async abortTile(tile: Tile): Promise {\n if (tile.abortController) {\n tile.abortController.abort();\n delete tile.abortController;\n }\n if (tile.actor) {\n await tile.actor.sendAsync({\n type: MessageType.abortTile,\n data: {uid: tile.uid, type: this.type, source: this.id}\n });\n }\n }\n\n async unloadTile(tile: Tile): Promise {\n tile.unloadVectorData();\n if (tile.actor) {\n await tile.actor.sendAsync({\n type: MessageType.removeTile,\n data: {\n uid: tile.uid,\n type: this.type,\n source: this.id}\n });\n }\n }\n\n hasTransition() {\n return false;\n }\n}\n","import {extend, pick} from '../util/util';\n\nimport {ImageRequest} from '../util/image_request';\n\nimport {ResourceType} from '../util/request_manager';\nimport {Event, ErrorEvent, Evented} from '../util/evented';\nimport {loadTileJson} from './load_tilejson';\nimport {TileBounds} from './tile_bounds';\nimport {Texture} from '../render/texture';\n\nimport type {Source} from './source';\nimport type {OverscaledTileID} from './tile_id';\nimport type {Map} from '../ui/map';\nimport type {Dispatcher} from '../util/dispatcher';\nimport type {Tile} from './tile';\nimport type {\n RasterSourceSpecification,\n RasterDEMSourceSpecification\n} from '@maplibre/maplibre-gl-style-spec';\n\n/**\n * A source containing raster tiles (See the [Style Specification](https://maplibre.org/maplibre-style-spec/) for detailed documentation of options.)\n *\n * @group Sources\n *\n * @example\n * ```ts\n * map.addSource('raster-source', {\n * 'type': 'raster',\n * 'tiles': ['https://tiles.stadiamaps.com/tiles/stamen_watercolor/{z}/{x}/{y}.jpg'],\n * 'tileSize': 256,\n * });\n * ```\n *\n * @example\n * ```ts\n * map.addSource('wms-test-source', {\n * 'type': 'raster',\n * // use the tiles option to specify a WMS tile source URL\n * 'tiles': [\n * 'https://img.nj.gov/imagerywms/Natural2015?bbox={bbox-epsg-3857}&format=image/png&service=WMS&version=1.1.1&request=GetMap&srs=EPSG:3857&transparent=true&width=256&height=256&layers=Natural2015'\n * ],\n * 'tileSize': 256\n * });\n * ```\n * @see [Add a raster tile source](https://maplibre.org/maplibre-gl-js/docs/examples/map-tiles/)\n * @see [Add a WMS source](https://maplibre.org/maplibre-gl-js/docs/examples/wms/)\n * @see [Display a satellite map](https://maplibre.org/maplibre-gl-js/docs/examples/satellite-map/)\n */\nexport class RasterTileSource extends Evented implements Source {\n type: 'raster' | 'raster-dem';\n id: string;\n minzoom: number;\n maxzoom: number;\n url: string;\n scheme: string;\n tileSize: number;\n\n bounds: [number, number, number, number];\n tileBounds: TileBounds;\n roundZoom: boolean;\n dispatcher: Dispatcher;\n map: Map;\n tiles: Array;\n\n _loaded: boolean;\n _options: RasterSourceSpecification | RasterDEMSourceSpecification;\n _tileJSONRequest: AbortController;\n\n constructor(id: string, options: RasterSourceSpecification | RasterDEMSourceSpecification, dispatcher: Dispatcher, eventedParent: Evented) {\n super();\n this.id = id;\n this.dispatcher = dispatcher;\n this.setEventedParent(eventedParent);\n\n this.type = 'raster';\n this.minzoom = 0;\n this.maxzoom = 22;\n this.roundZoom = true;\n this.scheme = 'xyz';\n this.tileSize = 512;\n this._loaded = false;\n\n this._options = extend({type: 'raster'}, options);\n extend(this, pick(options, ['url', 'scheme', 'tileSize']));\n }\n\n async load(sourceDataChanged: boolean = false) {\n this._loaded = false;\n this.fire(new Event('dataloading', {dataType: 'source'}));\n this._tileJSONRequest = new AbortController();\n try {\n const tileJSON = await loadTileJson(this._options, this.map._requestManager, this._tileJSONRequest);\n this._tileJSONRequest = null;\n this._loaded = true;\n if (tileJSON) {\n extend(this, tileJSON);\n if (tileJSON.bounds) this.tileBounds = new TileBounds(tileJSON.bounds, this.minzoom, this.maxzoom);\n\n // `content` is included here to prevent a race condition where `Style#_updateSources` is called\n // before the TileJSON arrives. this makes sure the tiles needed are loaded once TileJSON arrives\n // ref: https://github.com/mapbox/mapbox-gl-js/pull/4347#discussion_r104418088\n this.fire(new Event('data', {dataType: 'source', sourceDataType: 'metadata'}));\n this.fire(new Event('data', {dataType: 'source', sourceDataType: 'content', sourceDataChanged}));\n }\n } catch (err) {\n this._tileJSONRequest = null;\n this.fire(new ErrorEvent(err));\n }\n }\n\n loaded(): boolean {\n return this._loaded;\n }\n\n onAdd(map: Map) {\n this.map = map;\n this.load();\n }\n\n onRemove() {\n if (this._tileJSONRequest) {\n this._tileJSONRequest.abort();\n this._tileJSONRequest = null;\n }\n }\n\n setSourceProperty(callback: Function) {\n if (this._tileJSONRequest) {\n this._tileJSONRequest.abort();\n this._tileJSONRequest = null;\n }\n\n callback();\n\n this.load(true);\n }\n\n /**\n * Sets the source `tiles` property and re-renders the map.\n *\n * @param tiles - An array of one or more tile source URLs, as in the raster tiles spec (See the [Style Specification](https://maplibre.org/maplibre-style-spec/)\n */\n setTiles(tiles: Array): this {\n this.setSourceProperty(() => {\n this._options.tiles = tiles;\n });\n\n return this;\n }\n\n /**\n * Sets the source `url` property and re-renders the map.\n *\n * @param url - A URL to a TileJSON resource. Supported protocols are `http:` and `https:`.\n */\n setUrl(url: string): this {\n this.setSourceProperty(() => {\n this.url = url;\n this._options.url = url;\n });\n\n return this;\n }\n\n serialize() {\n return extend({}, this._options);\n }\n\n hasTile(tileID: OverscaledTileID) {\n return !this.tileBounds || this.tileBounds.contains(tileID.canonical);\n }\n\n async loadTile(tile: Tile): Promise {\n const url = tile.tileID.canonical.url(this.tiles, this.map.getPixelRatio(), this.scheme);\n tile.abortController = new AbortController();\n try {\n const response = await ImageRequest.getImage(this.map._requestManager.transformRequest(url, ResourceType.Tile), tile.abortController, this.map._refreshExpiredTiles);\n delete tile.abortController;\n if (tile.aborted) {\n tile.state = 'unloaded';\n return;\n }\n if (response && response.data) {\n if (this.map._refreshExpiredTiles && response.cacheControl && response.expires) {\n tile.setExpiryData({cacheControl: response.cacheControl, expires: response.expires});\n }\n const context = this.map.painter.context;\n const gl = context.gl;\n const img = response.data;\n tile.texture = this.map.painter.getTileTexture(img.width);\n if (tile.texture) {\n tile.texture.update(img, {useMipmap: true});\n } else {\n tile.texture = new Texture(context, img, gl.RGBA, {useMipmap: true});\n tile.texture.bind(gl.LINEAR, gl.CLAMP_TO_EDGE, gl.LINEAR_MIPMAP_NEAREST);\n }\n tile.state = 'loaded';\n }\n } catch (err) {\n delete tile.abortController;\n if (tile.aborted) {\n tile.state = 'unloaded';\n } else if (err) {\n tile.state = 'errored';\n throw err;\n }\n }\n }\n\n async abortTile(tile: Tile) {\n if (tile.abortController) {\n tile.abortController.abort();\n delete tile.abortController;\n }\n }\n\n async unloadTile(tile: Tile) {\n if (tile.texture) {\n this.map.painter.saveTileTexture(tile.texture);\n }\n }\n\n hasTransition() {\n return false;\n }\n}\n","import {ImageRequest} from '../util/image_request';\nimport {ResourceType} from '../util/request_manager';\nimport {extend, isImageBitmap, readImageUsingVideoFrame} from '../util/util';\nimport {type Evented} from '../util/evented';\nimport {browser} from '../util/browser';\nimport {offscreenCanvasSupported} from '../util/offscreen_canvas_supported';\nimport {OverscaledTileID} from './tile_id';\nimport {RasterTileSource} from './raster_tile_source';\n// ensure DEMData is registered for worker transfer on main thread:\nimport '../data/dem_data';\nimport type {DEMEncoding} from '../data/dem_data';\n\nimport type {Source} from './source';\nimport type {Dispatcher} from '../util/dispatcher';\nimport type {Tile} from './tile';\nimport type {RasterDEMSourceSpecification} from '@maplibre/maplibre-gl-style-spec';\nimport {isOffscreenCanvasDistorted} from '../util/offscreen_canvas_distorted';\nimport {RGBAImage} from '../util/image';\nimport {MessageType} from '../util/actor_messages';\n\n/**\n * A source containing raster DEM tiles (See the [Style Specification](https://maplibre.org/maplibre-style-spec/) for detailed documentation of options.)\n * This source can be used to show hillshading and 3D terrain\n *\n * @group Sources\n *\n * @example\n * ```ts\n * map.addSource('raster-dem-source', {\n * type: 'raster-dem',\n * url: 'https://demotiles.maplibre.org/terrain-tiles/tiles.json',\n * tileSize: 256\n * });\n * ```\n * @see [3D Terrain](https://maplibre.org/maplibre-gl-js/docs/examples/3d-terrain/)\n */\nexport class RasterDEMTileSource extends RasterTileSource implements Source {\n encoding: DEMEncoding;\n redFactor?: number;\n greenFactor?: number;\n blueFactor?: number;\n baseShift?: number;\n\n constructor(id: string, options: RasterDEMSourceSpecification, dispatcher: Dispatcher, eventedParent: Evented) {\n super(id, options, dispatcher, eventedParent);\n this.type = 'raster-dem';\n this.maxzoom = 22;\n this._options = extend({type: 'raster-dem'}, options);\n this.encoding = options.encoding || 'mapbox';\n this.redFactor = options.redFactor;\n this.greenFactor = options.greenFactor;\n this.blueFactor = options.blueFactor;\n this.baseShift = options.baseShift;\n }\n\n override async loadTile(tile: Tile): Promise {\n const url = tile.tileID.canonical.url(this.tiles, this.map.getPixelRatio(), this.scheme);\n const request = this.map._requestManager.transformRequest(url, ResourceType.Tile);\n tile.neighboringTiles = this._getNeighboringTiles(tile.tileID);\n tile.abortController = new AbortController();\n try {\n const response = await ImageRequest.getImage(request, tile.abortController, this.map._refreshExpiredTiles);\n delete tile.abortController;\n if (tile.aborted) {\n tile.state = 'unloaded';\n return;\n }\n if (response && response.data) {\n const img = response.data;\n if (this.map._refreshExpiredTiles && response.cacheControl && response.expires) {\n tile.setExpiryData({cacheControl: response.cacheControl, expires: response.expires});\n }\n const transfer = isImageBitmap(img) && offscreenCanvasSupported();\n const rawImageData = transfer ? img : await this.readImageNow(img);\n const params = {\n type: this.type,\n uid: tile.uid,\n source: this.id,\n rawImageData,\n encoding: this.encoding,\n redFactor: this.redFactor,\n greenFactor: this.greenFactor,\n blueFactor: this.blueFactor,\n baseShift: this.baseShift\n };\n\n if (!tile.actor || tile.state === 'expired') {\n tile.actor = this.dispatcher.getActor();\n const data = await tile.actor.sendAsync({type: MessageType.loadDEMTile, data: params});\n tile.dem = data;\n tile.needsHillshadePrepare = true;\n tile.needsTerrainPrepare = true;\n tile.state = 'loaded';\n }\n }\n } catch (err) {\n delete tile.abortController;\n if (tile.aborted) {\n tile.state = 'unloaded';\n } else if (err) {\n tile.state = 'errored';\n throw err;\n }\n }\n }\n\n async readImageNow(img: ImageBitmap | HTMLImageElement): Promise {\n if (typeof VideoFrame !== 'undefined' && isOffscreenCanvasDistorted()) {\n const width = img.width + 2;\n const height = img.height + 2;\n try {\n return new RGBAImage({width, height}, await readImageUsingVideoFrame(img, -1, -1, width, height));\n } catch {\n // fall-back to browser canvas decoding\n }\n }\n return browser.getImageData(img, 1);\n }\n\n _getNeighboringTiles(tileID: OverscaledTileID) {\n const canonical = tileID.canonical;\n const dim = Math.pow(2, canonical.z);\n\n const px = (canonical.x - 1 + dim) % dim;\n const pxw = canonical.x === 0 ? tileID.wrap - 1 : tileID.wrap;\n const nx = (canonical.x + 1 + dim) % dim;\n const nxw = canonical.x + 1 === dim ? tileID.wrap + 1 : tileID.wrap;\n\n const neighboringTiles = {};\n // add adjacent tiles\n neighboringTiles[new OverscaledTileID(tileID.overscaledZ, pxw, canonical.z, px, canonical.y).key] = {backfilled: false};\n neighboringTiles[new OverscaledTileID(tileID.overscaledZ, nxw, canonical.z, nx, canonical.y).key] = {backfilled: false};\n\n // Add upper neighboringTiles\n if (canonical.y > 0) {\n neighboringTiles[new OverscaledTileID(tileID.overscaledZ, pxw, canonical.z, px, canonical.y - 1).key] = {backfilled: false};\n neighboringTiles[new OverscaledTileID(tileID.overscaledZ, tileID.wrap, canonical.z, canonical.x, canonical.y - 1).key] = {backfilled: false};\n neighboringTiles[new OverscaledTileID(tileID.overscaledZ, nxw, canonical.z, nx, canonical.y - 1).key] = {backfilled: false};\n }\n // Add lower neighboringTiles\n if (canonical.y + 1 < dim) {\n neighboringTiles[new OverscaledTileID(tileID.overscaledZ, pxw, canonical.z, px, canonical.y + 1).key] = {backfilled: false};\n neighboringTiles[new OverscaledTileID(tileID.overscaledZ, tileID.wrap, canonical.z, canonical.x, canonical.y + 1).key] = {backfilled: false};\n neighboringTiles[new OverscaledTileID(tileID.overscaledZ, nxw, canonical.z, nx, canonical.y + 1).key] = {backfilled: false};\n }\n\n return neighboringTiles;\n }\n\n async unloadTile(tile: Tile) {\n if (tile.demTexture) this.map.painter.saveTileTexture(tile.demTexture);\n if (tile.fbo) {\n tile.fbo.destroy();\n delete tile.fbo;\n }\n if (tile.dem) delete tile.dem;\n delete tile.neighboringTiles;\n\n tile.state = 'unloaded';\n if (tile.actor) {\n await tile.actor.sendAsync({type: MessageType.removeDEMTile, data: {type: this.type, uid: tile.uid, source: this.id}});\n }\n }\n}\n","import {Event, ErrorEvent, Evented} from '../util/evented';\n\nimport {extend, warnOnce} from '../util/util';\nimport {EXTENT} from '../data/extent';\nimport {ResourceType} from '../util/request_manager';\nimport {browser} from '../util/browser';\n\nimport type {Source} from './source';\nimport type {Map} from '../ui/map';\nimport type {Dispatcher} from '../util/dispatcher';\nimport type {Tile} from './tile';\nimport type {Actor} from '../util/actor';\nimport type {GeoJSONSourceSpecification, PromoteIdSpecification} from '@maplibre/maplibre-gl-style-spec';\nimport type {GeoJSONSourceDiff} from './geojson_source_diff';\nimport type {GeoJSONWorkerOptions, LoadGeoJSONParameters} from './geojson_worker_source';\nimport {type WorkerTileParameters} from './worker_source';\nimport {MessageType} from '../util/actor_messages';\n\n/**\n * Options object for GeoJSONSource.\n */\nexport type GeoJSONSourceOptions = GeoJSONSourceSpecification & {\n workerOptions?: GeoJSONWorkerOptions;\n collectResourceTiming?: boolean;\n data: GeoJSON.GeoJSON | string;\n}\n\nexport type GeoJSONSourceInternalOptions = {\n data?: GeoJSON.GeoJSON | string | undefined;\n cluster?: boolean;\n clusterMaxZoom?: number;\n clusterRadius?: number;\n clusterMinPoints?: number;\n generateId?: boolean;\n}\n\n/**\n * The cluster options to set\n */\nexport type SetClusterOptions = {\n /**\n * Whether or not to cluster\n */\n cluster?: boolean;\n /**\n * The cluster's max zoom\n */\n clusterMaxZoom?: number;\n /**\n * The cluster's radius\n */\n clusterRadius?: number;\n}\n\n/**\n * A source containing GeoJSON.\n * (See the [Style Specification](https://maplibre.org/maplibre-style-spec/#sources-geojson) for detailed documentation of options.)\n *\n * @group Sources\n *\n * @example\n * ```ts\n * map.addSource('some id', {\n * type: 'geojson',\n * data: 'https://d2ad6b4ur7yvpq.cloudfront.net/naturalearth-3.3.0/ne_10m_ports.geojson'\n * });\n * ```\n *\n * @example\n * ```ts\n * map.addSource('some id', {\n * type: 'geojson',\n * data: {\n * \"type\": \"FeatureCollection\",\n * \"features\": [{\n * \"type\": \"Feature\",\n * \"properties\": {},\n * \"geometry\": {\n * \"type\": \"Point\",\n * \"coordinates\": [\n * -76.53063297271729,\n * 39.18174077994108\n * ]\n * }\n * }]\n * }\n * });\n * ```\n *\n * @example\n * ```ts\n * map.getSource('some id').setData({\n * \"type\": \"FeatureCollection\",\n * \"features\": [{\n * \"type\": \"Feature\",\n * \"properties\": { \"name\": \"Null Island\" },\n * \"geometry\": {\n * \"type\": \"Point\",\n * \"coordinates\": [ 0, 0 ]\n * }\n * }]\n * });\n * ```\n * @see [Draw GeoJSON points](https://maplibre.org/maplibre-gl-js/docs/examples/geojson-markers/)\n * @see [Add a GeoJSON line](https://maplibre.org/maplibre-gl-js/docs/examples/geojson-line/)\n * @see [Create a heatmap from points](https://maplibre.org/maplibre-gl-js/docs/examples/heatmap-layer/)\n * @see [Create and style clusters](https://maplibre.org/maplibre-gl-js/docs/examples/cluster/)\n */\nexport class GeoJSONSource extends Evented implements Source {\n type: 'geojson';\n id: string;\n minzoom: number;\n maxzoom: number;\n tileSize: number;\n attribution: string;\n promoteId: PromoteIdSpecification;\n\n isTileClipped: boolean;\n reparseOverscaled: boolean;\n _data: GeoJSON.GeoJSON | string | undefined;\n _options: GeoJSONSourceInternalOptions;\n workerOptions: GeoJSONWorkerOptions;\n map: Map;\n actor: Actor;\n _pendingLoads: number;\n _collectResourceTiming: boolean;\n _removed: boolean;\n\n /** @internal */\n constructor(id: string, options: GeoJSONSourceOptions, dispatcher: Dispatcher, eventedParent: Evented) {\n super();\n\n this.id = id;\n\n // `type` is a property rather than a constant to make it easy for 3rd\n // parties to use GeoJSONSource to build their own source types.\n this.type = 'geojson';\n\n this.minzoom = 0;\n this.maxzoom = 18;\n this.tileSize = 512;\n this.isTileClipped = true;\n this.reparseOverscaled = true;\n this._removed = false;\n this._pendingLoads = 0;\n\n this.actor = dispatcher.getActor();\n this.setEventedParent(eventedParent);\n\n this._data = (options.data as any);\n this._options = extend({}, options);\n\n this._collectResourceTiming = options.collectResourceTiming;\n\n if (options.maxzoom !== undefined) this.maxzoom = options.maxzoom;\n if (options.type) this.type = options.type;\n if (options.attribution) this.attribution = options.attribution;\n this.promoteId = options.promoteId;\n\n if (options.clusterMaxZoom !== undefined && this.maxzoom <= options.clusterMaxZoom) {\n warnOnce(`The maxzoom value \"${this.maxzoom}\" is expected to be greater than the clusterMaxZoom value \"${options.clusterMaxZoom}\".`);\n }\n\n // sent to the worker, along with `url: ...` or `data: literal geojson`,\n // so that it can load/parse/index the geojson data\n // extending with `options.workerOptions` helps to make it easy for\n // third-party sources to hack/reuse GeoJSONSource.\n this.workerOptions = extend({\n source: this.id,\n cluster: options.cluster || false,\n geojsonVtOptions: {\n buffer: this._pixelsToTileUnits(options.buffer !== undefined ? options.buffer : 128),\n tolerance: this._pixelsToTileUnits(options.tolerance !== undefined ? options.tolerance : 0.375),\n extent: EXTENT,\n maxZoom: this.maxzoom,\n lineMetrics: options.lineMetrics || false,\n generateId: options.generateId || false\n },\n superclusterOptions: {\n maxZoom: options.clusterMaxZoom !== undefined ? options.clusterMaxZoom : this.maxzoom - 1,\n minPoints: Math.max(2, options.clusterMinPoints || 2),\n extent: EXTENT,\n radius: this._pixelsToTileUnits(options.clusterRadius || 50),\n log: false,\n generateId: options.generateId || false\n },\n clusterProperties: options.clusterProperties,\n filter: options.filter\n }, options.workerOptions);\n\n // send the promoteId to the worker to have more flexible updates, but only if it is a string\n if (typeof this.promoteId === 'string') {\n this.workerOptions.promoteId = this.promoteId;\n }\n }\n\n private _pixelsToTileUnits(pixelValue: number): number {\n return pixelValue * (EXTENT / this.tileSize);\n }\n\n async load() {\n await this._updateWorkerData();\n }\n\n onAdd(map: Map) {\n this.map = map;\n this.load();\n }\n\n /**\n * Sets the GeoJSON data and re-renders the map.\n *\n * @param data - A GeoJSON data object or a URL to one. The latter is preferable in the case of large GeoJSON files.\n */\n setData(data: GeoJSON.GeoJSON | string): this {\n this._data = data;\n this._updateWorkerData();\n\n return this;\n }\n\n /**\n * Updates the source's GeoJSON, and re-renders the map.\n *\n * For sources with lots of features, this method can be used to make updates more quickly.\n *\n * This approach requires unique IDs for every feature in the source. The IDs can either be specified on the feature,\n * or by using the promoteId option to specify which property should be used as the ID.\n *\n * It is an error to call updateData on a source that did not have unique IDs for each of its features already.\n *\n * Updates are applied on a best-effort basis, updating an ID that does not exist will not result in an error.\n *\n * @param diff - The changes that need to be applied.\n */\n updateData(diff: GeoJSONSourceDiff): this {\n this._updateWorkerData(diff);\n\n return this;\n }\n\n /**\n * Allows to get the source's actual GeoJSON data.\n *\n * @returns a promise which resolves to the source's actual GeoJSON data\n */\n async getData(): Promise {\n const options: LoadGeoJSONParameters = extend({type: this.type}, this.workerOptions);\n return this.actor.sendAsync({type: MessageType.getData, data: options});\n }\n\n /**\n * To disable/enable clustering on the source options\n * @param options - The options to set\n * @example\n * ```ts\n * map.getSource('some id').setClusterOptions({cluster: false});\n * map.getSource('some id').setClusterOptions({cluster: false, clusterRadius: 50, clusterMaxZoom: 14});\n * ```\n */\n setClusterOptions(options: SetClusterOptions): this {\n this.workerOptions.cluster = options.cluster;\n if (options) {\n if (options.clusterRadius !== undefined) this.workerOptions.superclusterOptions.radius = this._pixelsToTileUnits(options.clusterRadius);\n if (options.clusterMaxZoom !== undefined) this.workerOptions.superclusterOptions.maxZoom = options.clusterMaxZoom;\n }\n this._updateWorkerData();\n return this;\n }\n\n /**\n * For clustered sources, fetches the zoom at which the given cluster expands.\n *\n * @param clusterId - The value of the cluster's `cluster_id` property.\n * @returns a promise that is resolved with the zoom number\n */\n getClusterExpansionZoom(clusterId: number): Promise {\n return this.actor.sendAsync({type: MessageType.getClusterExpansionZoom, data: {type: this.type, clusterId, source: this.id}});\n }\n\n /**\n * For clustered sources, fetches the children of the given cluster on the next zoom level (as an array of GeoJSON features).\n *\n * @param clusterId - The value of the cluster's `cluster_id` property.\n * @returns a promise that is resolved when the features are retrieved\n */\n getClusterChildren(clusterId: number): Promise> {\n return this.actor.sendAsync({type: MessageType.getClusterChildren, data: {type: this.type, clusterId, source: this.id}});\n }\n\n /**\n * For clustered sources, fetches the original points that belong to the cluster (as an array of GeoJSON features).\n *\n * @param clusterId - The value of the cluster's `cluster_id` property.\n * @param limit - The maximum number of features to return.\n * @param offset - The number of features to skip (e.g. for pagination).\n * @returns a promise that is resolved when the features are retrieved\n * @example\n * Retrieve cluster leaves on click\n * ```ts\n * map.on('click', 'clusters', (e) => {\n * let features = map.queryRenderedFeatures(e.point, {\n * layers: ['clusters']\n * });\n *\n * let clusterId = features[0].properties.cluster_id;\n * let pointCount = features[0].properties.point_count;\n * let clusterSource = map.getSource('clusters');\n *\n * const features = await clusterSource.getClusterLeaves(clusterId, pointCount);\n * // Print cluster leaves in the console\n * console.log('Cluster leaves:', features);\n * });\n * ```\n */\n getClusterLeaves(clusterId: number, limit: number, offset: number): Promise> {\n return this.actor.sendAsync({type: MessageType.getClusterLeaves, data: {\n type: this.type,\n source: this.id,\n clusterId,\n limit,\n offset\n }});\n }\n\n /**\n * Responsible for invoking WorkerSource's geojson.loadData target, which\n * handles loading the geojson data and preparing to serve it up as tiles,\n * using geojson-vt or supercluster as appropriate.\n * @param diff - the diff object\n */\n async _updateWorkerData(diff?: GeoJSONSourceDiff) {\n const options: LoadGeoJSONParameters = extend({type: this.type}, this.workerOptions);\n if (diff) {\n options.dataDiff = diff;\n } else if (typeof this._data === 'string') {\n options.request = this.map._requestManager.transformRequest(browser.resolveURL(this._data as string), ResourceType.Source);\n options.request.collectResourceTiming = this._collectResourceTiming;\n } else {\n options.data = JSON.stringify(this._data);\n }\n this._pendingLoads++;\n this.fire(new Event('dataloading', {dataType: 'source'}));\n try {\n const result = await this.actor.sendAsync({type: MessageType.loadData, data: options});\n this._pendingLoads--;\n if (this._removed || result.abandoned) {\n this.fire(new Event('dataabort', {dataType: 'source'}));\n return;\n }\n\n let resourceTiming: PerformanceResourceTiming[] = null;\n if (result.resourceTiming && result.resourceTiming[this.id]) {\n resourceTiming = result.resourceTiming[this.id].slice(0);\n }\n\n const data: any = {dataType: 'source'};\n if (this._collectResourceTiming && resourceTiming && resourceTiming.length > 0) {\n extend(data, {resourceTiming});\n }\n\n // although GeoJSON sources contain no metadata, we fire this event to let the SourceCache\n // know its ok to start requesting tiles.\n this.fire(new Event('data', {...data, sourceDataType: 'metadata'}));\n this.fire(new Event('data', {...data, sourceDataType: 'content'}));\n } catch (err) {\n this._pendingLoads--;\n if (this._removed) {\n this.fire(new Event('dataabort', {dataType: 'source'}));\n return;\n }\n this.fire(new ErrorEvent(err));\n }\n }\n\n loaded(): boolean {\n return this._pendingLoads === 0;\n }\n\n async loadTile(tile: Tile): Promise {\n const message = !tile.actor ? MessageType.loadTile : MessageType.reloadTile;\n tile.actor = this.actor;\n const params: WorkerTileParameters = {\n type: this.type,\n uid: tile.uid,\n tileID: tile.tileID,\n zoom: tile.tileID.overscaledZ,\n maxZoom: this.maxzoom,\n tileSize: this.tileSize,\n source: this.id,\n pixelRatio: this.map.getPixelRatio(),\n showCollisionBoxes: this.map.showCollisionBoxes,\n promoteId: this.promoteId,\n subdivisionGranularity: this.map.style.projection.subdivisionGranularity\n };\n\n tile.abortController = new AbortController();\n const data = await this.actor.sendAsync({type: message, data: params}, tile.abortController);\n delete tile.abortController;\n tile.unloadVectorData();\n\n if (!tile.aborted) {\n tile.loadVectorData(data, this.map.painter, message === MessageType.reloadTile);\n }\n }\n\n async abortTile(tile: Tile) {\n if (tile.abortController) {\n tile.abortController.abort();\n delete tile.abortController;\n }\n tile.aborted = true;\n }\n\n async unloadTile(tile: Tile) {\n tile.unloadVectorData();\n await this.actor.sendAsync({type: MessageType.removeTile, data: {uid: tile.uid, type: this.type, source: this.id}});\n }\n\n onRemove() {\n this._removed = true;\n this.actor.sendAsync({type: MessageType.removeSource, data: {type: this.type, source: this.id}});\n }\n\n serialize(): GeoJSONSourceSpecification {\n return extend({}, this._options, {\n type: this.type,\n data: this._data\n });\n }\n\n hasTransition() {\n return false;\n }\n}\n","import {CanonicalTileID} from './tile_id';\nimport {Event, ErrorEvent, Evented} from '../util/evented';\nimport {ImageRequest} from '../util/image_request';\nimport {ResourceType} from '../util/request_manager';\nimport {Texture} from '../render/texture';\nimport {MercatorCoordinate} from '../geo/mercator_coordinate';\n\nimport type {Source} from './source';\nimport type {CanvasSourceSpecification} from './canvas_source';\nimport type {Map} from '../ui/map';\nimport type {Dispatcher} from '../util/dispatcher';\nimport type {Tile} from './tile';\nimport type {\n ImageSourceSpecification,\n VideoSourceSpecification\n} from '@maplibre/maplibre-gl-style-spec';\nimport type Point from '@mapbox/point-geometry';\n\n/**\n * Four geographical coordinates,\n * represented as arrays of longitude and latitude numbers, which define the corners of the image.\n * The coordinates start at the top left corner of the image and proceed in clockwise order.\n * They do not have to represent a rectangle.\n */\nexport type Coordinates = [[number, number], [number, number], [number, number], [number, number]];\n\n/**\n * The options object for the {@link ImageSource#updateImage} method\n */\nexport type UpdateImageOptions = {\n /**\n * Required image URL.\n */\n url: string;\n /**\n * The image coordinates\n */\n coordinates?: Coordinates;\n}\n\n/**\n * A data source containing an image.\n * (See the [Style Specification](https://maplibre.org/maplibre-style-spec/#sources-image) for detailed documentation of options.)\n *\n * @group Sources\n *\n * @example\n * ```ts\n * // add to map\n * map.addSource('some id', {\n * type: 'image',\n * url: 'https://www.maplibre.org/images/foo.png',\n * coordinates: [\n * [-76.54, 39.18],\n * [-76.52, 39.18],\n * [-76.52, 39.17],\n * [-76.54, 39.17]\n * ]\n * });\n *\n * // update coordinates\n * let mySource = map.getSource('some id');\n * mySource.setCoordinates([\n * [-76.54335737228394, 39.18579907229748],\n * [-76.52803659439087, 39.1838364847587],\n * [-76.5295386314392, 39.17683392507606],\n * [-76.54520273208618, 39.17876344106642]\n * ]);\n *\n * // update url and coordinates simultaneously\n * mySource.updateImage({\n * url: 'https://www.maplibre.org/images/bar.png',\n * coordinates: [\n * [-76.54335737228394, 39.18579907229748],\n * [-76.52803659439087, 39.1838364847587],\n * [-76.5295386314392, 39.17683392507606],\n * [-76.54520273208618, 39.17876344106642]\n * ]\n * })\n *\n * map.removeSource('some id'); // remove\n * ```\n */\nexport class ImageSource extends Evented implements Source {\n type: string;\n id: string;\n minzoom: number;\n maxzoom: number;\n tileSize: number;\n url: string;\n\n coordinates: Coordinates;\n tiles: {[_: string]: Tile};\n options: any;\n dispatcher: Dispatcher;\n map: Map;\n texture: Texture | null;\n image: HTMLImageElement | ImageBitmap;\n tileID: CanonicalTileID;\n tileCoords: Array;\n flippedWindingOrder: boolean = false;\n _loaded: boolean;\n _request: AbortController;\n\n /** @internal */\n constructor(id: string, options: ImageSourceSpecification | VideoSourceSpecification | CanvasSourceSpecification, dispatcher: Dispatcher, eventedParent: Evented) {\n super();\n this.id = id;\n this.dispatcher = dispatcher;\n this.coordinates = options.coordinates;\n\n this.type = 'image';\n this.minzoom = 0;\n this.maxzoom = 22;\n this.tileSize = 512;\n this.tiles = {};\n this._loaded = false;\n\n this.setEventedParent(eventedParent);\n\n this.options = options;\n }\n\n async load(newCoordinates?: Coordinates): Promise {\n this._loaded = false;\n this.fire(new Event('dataloading', {dataType: 'source'}));\n\n this.url = this.options.url;\n\n this._request = new AbortController();\n try {\n const image = await ImageRequest.getImage(this.map._requestManager.transformRequest(this.url, ResourceType.Image), this._request);\n this._request = null;\n this._loaded = true;\n\n if (image && image.data) {\n this.image = image.data;\n if (newCoordinates) {\n this.coordinates = newCoordinates;\n }\n this._finishLoading();\n }\n } catch (err) {\n this._request = null;\n this._loaded = true;\n this.fire(new ErrorEvent(err));\n }\n }\n\n loaded(): boolean {\n return this._loaded;\n }\n\n /**\n * Updates the image URL and, optionally, the coordinates. To avoid having the image flash after changing,\n * set the `raster-fade-duration` paint property on the raster layer to 0.\n *\n * @param options - The options object.\n */\n updateImage(options: UpdateImageOptions): this {\n if (!options.url) {\n return this;\n }\n\n if (this._request) {\n this._request.abort();\n this._request = null;\n }\n\n this.options.url = options.url;\n this.load(options.coordinates).finally(() => { this.texture = null; });\n return this;\n }\n\n _finishLoading() {\n if (this.map) {\n this.setCoordinates(this.coordinates);\n this.fire(new Event('data', {dataType: 'source', sourceDataType: 'metadata'}));\n }\n }\n\n onAdd(map: Map) {\n this.map = map;\n this.load();\n }\n\n onRemove() {\n if (this._request) {\n this._request.abort();\n this._request = null;\n }\n }\n\n /**\n * Sets the image's coordinates and re-renders the map.\n *\n * @param coordinates - Four geographical coordinates,\n * represented as arrays of longitude and latitude numbers, which define the corners of the image.\n * The coordinates start at the top left corner of the image and proceed in clockwise order.\n * They do not have to represent a rectangle.\n */\n setCoordinates(coordinates: Coordinates): this {\n this.coordinates = coordinates;\n\n // Calculate which mercator tile is suitable for rendering the video in\n // and create a buffer with the corner coordinates. These coordinates\n // may be outside the tile, because raster tiles aren't clipped when rendering.\n\n // transform the geo coordinates into (zoom 0) tile space coordinates\n const cornerCoords = coordinates.map(MercatorCoordinate.fromLngLat);\n\n // Compute the coordinates of the tile we'll use to hold this image's\n // render data\n this.tileID = getCoordinatesCenterTileID(cornerCoords);\n\n // Constrain min/max zoom to our tile's zoom level in order to force\n // SourceCache to request this tile (no matter what the map's zoom\n // level)\n this.minzoom = this.maxzoom = this.tileID.z;\n\n // Transform the corner coordinates into the coordinate space of our\n // tile.\n this.tileCoords = cornerCoords.map((coord) => this.tileID.getTilePoint(coord)._round());\n this.flippedWindingOrder = hasWrongWindingOrder(this.tileCoords);\n\n this.fire(new Event('data', {dataType: 'source', sourceDataType: 'content'}));\n return this;\n }\n\n prepare() {\n if (Object.keys(this.tiles).length === 0 || !this.image) {\n return;\n }\n\n const context = this.map.painter.context;\n const gl = context.gl;\n\n if (!this.texture) {\n this.texture = new Texture(context, this.image, gl.RGBA);\n this.texture.bind(gl.LINEAR, gl.CLAMP_TO_EDGE);\n }\n\n let newTilesLoaded = false;\n for (const w in this.tiles) {\n const tile = this.tiles[w];\n if (tile.state !== 'loaded') {\n tile.state = 'loaded';\n tile.texture = this.texture;\n newTilesLoaded = true;\n }\n }\n\n if (newTilesLoaded) {\n this.fire(new Event('data', {dataType: 'source', sourceDataType: 'idle', sourceId: this.id}));\n }\n }\n\n async loadTile(tile: Tile): Promise {\n // We have a single tile -- whose coordinates are this.tileID -- that\n // covers the image we want to render. If that's the one being\n // requested, set it up with the image; otherwise, mark the tile as\n // `errored` to indicate that we have no data for it.\n // If the world wraps, we may have multiple \"wrapped\" copies of the\n // single tile.\n if (this.tileID && this.tileID.equals(tile.tileID.canonical)) {\n this.tiles[String(tile.tileID.wrap)] = tile;\n tile.buckets = {};\n } else {\n tile.state = 'errored';\n }\n }\n\n serialize(): ImageSourceSpecification | VideoSourceSpecification | CanvasSourceSpecification {\n return {\n type: 'image',\n url: this.options.url,\n coordinates: this.coordinates\n };\n }\n\n hasTransition() {\n return false;\n }\n}\n\n/**\n * Given a list of coordinates, get their center as a coordinate.\n *\n * @returns centerpoint\n * @internal\n */\nexport function getCoordinatesCenterTileID(coords: Array) {\n let minX = Infinity;\n let minY = Infinity;\n let maxX = -Infinity;\n let maxY = -Infinity;\n\n for (const coord of coords) {\n minX = Math.min(minX, coord.x);\n minY = Math.min(minY, coord.y);\n maxX = Math.max(maxX, coord.x);\n maxY = Math.max(maxY, coord.y);\n }\n\n const dx = maxX - minX;\n const dy = maxY - minY;\n const dMax = Math.max(dx, dy);\n const zoom = Math.max(0, Math.floor(-Math.log(dMax) / Math.LN2));\n const tilesAtZoom = Math.pow(2, zoom);\n\n return new CanonicalTileID(\n zoom,\n Math.floor((minX + maxX) / 2 * tilesAtZoom),\n Math.floor((minY + maxY) / 2 * tilesAtZoom));\n}\n\nfunction hasWrongWindingOrder(coords: Array) {\n const e0x = coords[1].x - coords[0].x;\n const e0y = coords[1].y - coords[0].y;\n const e1x = coords[2].x - coords[0].x;\n const e1y = coords[2].y - coords[0].y;\n\n const crossProduct = e0x * e1y - e0y * e1x;\n\n return crossProduct < 0;\n}\n","import {getVideo} from '../util/ajax';\nimport {ResourceType} from '../util/request_manager';\n\nimport {ImageSource} from './image_source';\nimport {Texture} from '../render/texture';\nimport {Event, ErrorEvent} from '../util/evented';\nimport {ValidationError} from '@maplibre/maplibre-gl-style-spec';\n\nimport type {Map} from '../ui/map';\nimport type {Dispatcher} from '../util/dispatcher';\nimport type {Evented} from '../util/evented';\nimport type {VideoSourceSpecification} from '@maplibre/maplibre-gl-style-spec';\n\n/**\n * A data source containing video.\n * (See the [Style Specification](https://maplibre.org/maplibre-style-spec/#sources-video) for detailed documentation of options.)\n *\n * @group Sources\n *\n * @example\n * ```ts\n * // add to map\n * map.addSource('some id', {\n * type: 'video',\n * url: [\n * 'https://www.mapbox.com/blog/assets/baltimore-smoke.mp4',\n * 'https://www.mapbox.com/blog/assets/baltimore-smoke.webm'\n * ],\n * coordinates: [\n * [-76.54, 39.18],\n * [-76.52, 39.18],\n * [-76.52, 39.17],\n * [-76.54, 39.17]\n * ]\n * });\n *\n * // update\n * let mySource = map.getSource('some id');\n * mySource.setCoordinates([\n * [-76.54335737228394, 39.18579907229748],\n * [-76.52803659439087, 39.1838364847587],\n * [-76.5295386314392, 39.17683392507606],\n * [-76.54520273208618, 39.17876344106642]\n * ]);\n *\n * map.removeSource('some id'); // remove\n * ```\n * @see [Add a video](https://maplibre.org/maplibre-gl-js/docs/examples/video-on-a-map/)\n *\n * Note that when rendered as a raster layer, the layer's `raster-fade-duration` property will cause the video to fade in.\n * This happens when playback is started, paused and resumed, or when the video's coordinates are updated. To avoid this behavior,\n * set the layer's `raster-fade-duration` property to `0`.\n */\nexport class VideoSource extends ImageSource {\n options: VideoSourceSpecification;\n urls: Array;\n video: HTMLVideoElement;\n roundZoom: boolean;\n\n constructor(id: string, options: VideoSourceSpecification, dispatcher: Dispatcher, eventedParent: Evented) {\n super(id, options, dispatcher, eventedParent);\n this.roundZoom = true;\n this.type = 'video';\n this.options = options;\n }\n\n async load() {\n this._loaded = false;\n const options = this.options;\n\n this.urls = [];\n for (const url of options.urls) {\n this.urls.push(this.map._requestManager.transformRequest(url, ResourceType.Source).url);\n }\n try {\n const video = await getVideo(this.urls);\n this._loaded = true;\n if (!video) {\n return;\n }\n this.video = video;\n this.video.loop = true;\n\n // Start repainting when video starts playing. hasTransition() will then return\n // true to trigger additional frames as long as the videos continues playing.\n this.video.addEventListener('playing', () => {\n this.map.triggerRepaint();\n });\n\n if (this.map) {\n this.video.play();\n }\n\n this._finishLoading();\n } catch (err) {\n this.fire(new ErrorEvent(err));\n }\n }\n\n /**\n * Pauses the video.\n */\n pause() {\n if (this.video) {\n this.video.pause();\n }\n }\n\n /**\n * Plays the video.\n */\n play() {\n if (this.video) {\n this.video.play();\n }\n }\n\n /**\n * Sets playback to a timestamp, in seconds.\n */\n seek(seconds: number) {\n if (this.video) {\n const seekableRange = this.video.seekable;\n if (seconds < seekableRange.start(0) || seconds > seekableRange.end(0)) {\n this.fire(new ErrorEvent(new ValidationError(`sources.${this.id}`, null, `Playback for this video can be set only between the ${seekableRange.start(0)} and ${seekableRange.end(0)}-second mark.`)));\n } else this.video.currentTime = seconds;\n }\n }\n\n /**\n * Returns the HTML `video` element.\n *\n * @returns The HTML `video` element.\n */\n getVideo(): HTMLVideoElement {\n return this.video;\n }\n\n onAdd(map: Map) {\n if (this.map) return;\n this.map = map;\n this.load();\n if (this.video) {\n this.video.play();\n this.setCoordinates(this.coordinates);\n }\n }\n\n /**\n * Sets the video's coordinates and re-renders the map.\n */\n prepare(): this {\n if (Object.keys(this.tiles).length === 0 || this.video.readyState < 2) {\n return; // not enough data for current position\n }\n\n const context = this.map.painter.context;\n const gl = context.gl;\n\n if (!this.texture) {\n this.texture = new Texture(context, this.video, gl.RGBA);\n this.texture.bind(gl.LINEAR, gl.CLAMP_TO_EDGE);\n } else if (!this.video.paused) {\n this.texture.bind(gl.LINEAR, gl.CLAMP_TO_EDGE);\n gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, gl.RGBA, gl.UNSIGNED_BYTE, this.video);\n }\n\n let newTilesLoaded = false;\n for (const w in this.tiles) {\n const tile = this.tiles[w];\n if (tile.state !== 'loaded') {\n tile.state = 'loaded';\n tile.texture = this.texture;\n newTilesLoaded = true;\n }\n }\n\n if (newTilesLoaded) {\n this.fire(new Event('data', {dataType: 'source', sourceDataType: 'idle', sourceId: this.id}));\n }\n }\n\n serialize(): VideoSourceSpecification {\n return {\n type: 'video',\n urls: this.urls,\n coordinates: this.coordinates\n };\n }\n\n hasTransition() {\n return this.video && !this.video.paused;\n }\n}\n","import {ImageSource} from './image_source';\n\nimport {Texture} from '../render/texture';\nimport {Event, ErrorEvent} from '../util/evented';\nimport {ValidationError} from '@maplibre/maplibre-gl-style-spec';\n\nimport type {Map} from '../ui/map';\nimport type {Dispatcher} from '../util/dispatcher';\nimport type {Evented} from '../util/evented';\n\n/**\n * Options to add a canvas source type to the map.\n */\nexport type CanvasSourceSpecification = {\n /**\n * Source type. Must be `\"canvas\"`.\n */\n type: 'canvas';\n /**\n * Four geographical coordinates denoting where to place the corners of the canvas, specified in `[longitude, latitude]` pairs.\n */\n coordinates: [[number, number], [number, number], [number, number], [number, number]];\n /**\n * Whether the canvas source is animated. If the canvas is static (i.e. pixels do not need to be re-read on every frame), `animate` should be set to `false` to improve performance.\n * @defaultValue true\n */\n animate?: boolean;\n /**\n * Canvas source from which to read pixels. Can be a string representing the ID of the canvas element, or the `HTMLCanvasElement` itself.\n */\n canvas?: string | HTMLCanvasElement;\n};\n\n/**\n * A data source containing the contents of an HTML canvas. See {@link CanvasSourceSpecification} for detailed documentation of options.\n *\n * @group Sources\n *\n * @example\n * ```ts\n * // add to map\n * map.addSource('some id', {\n * type: 'canvas',\n * canvas: 'idOfMyHTMLCanvas',\n * animate: true,\n * coordinates: [\n * [-76.54, 39.18],\n * [-76.52, 39.18],\n * [-76.52, 39.17],\n * [-76.54, 39.17]\n * ]\n * });\n *\n * // update\n * let mySource = map.getSource('some id');\n * mySource.setCoordinates([\n * [-76.54335737228394, 39.18579907229748],\n * [-76.52803659439087, 39.1838364847587],\n * [-76.5295386314392, 39.17683392507606],\n * [-76.54520273208618, 39.17876344106642]\n * ]);\n *\n * map.removeSource('some id'); // remove\n * ```\n */\nexport class CanvasSource extends ImageSource {\n options: CanvasSourceSpecification;\n animate: boolean;\n canvas: HTMLCanvasElement;\n width: number;\n height: number;\n /**\n * Enables animation. The image will be copied from the canvas to the map on each frame.\n */\n play: () => void;\n /**\n * Disables animation. The map will display a static copy of the canvas image.\n */\n pause: () => void;\n _playing: boolean;\n\n /** @internal */\n constructor(id: string, options: CanvasSourceSpecification, dispatcher: Dispatcher, eventedParent: Evented) {\n super(id, options, dispatcher, eventedParent);\n\n // We build in some validation here, since canvas sources aren't included in the style spec:\n if (!options.coordinates) {\n this.fire(new ErrorEvent(new ValidationError(`sources.${id}`, null, 'missing required property \"coordinates\"')));\n } else if (!Array.isArray(options.coordinates) || options.coordinates.length !== 4 ||\n options.coordinates.some(c => !Array.isArray(c) || c.length !== 2 || c.some(l => typeof l !== 'number'))) {\n this.fire(new ErrorEvent(new ValidationError(`sources.${id}`, null, '\"coordinates\" property must be an array of 4 longitude/latitude array pairs')));\n }\n\n if (options.animate && typeof options.animate !== 'boolean') {\n this.fire(new ErrorEvent(new ValidationError(`sources.${id}`, null, 'optional \"animate\" property must be a boolean value')));\n }\n\n if (!options.canvas) {\n this.fire(new ErrorEvent(new ValidationError(`sources.${id}`, null, 'missing required property \"canvas\"')));\n } else if (typeof options.canvas !== 'string' && !(options.canvas instanceof HTMLCanvasElement)) {\n this.fire(new ErrorEvent(new ValidationError(`sources.${id}`, null, '\"canvas\" must be either a string representing the ID of the canvas element from which to read, or an HTMLCanvasElement instance')));\n }\n\n this.options = options;\n this.animate = options.animate !== undefined ? options.animate : true;\n }\n\n async load() {\n this._loaded = true;\n if (!this.canvas) {\n this.canvas = (this.options.canvas instanceof HTMLCanvasElement) ?\n this.options.canvas :\n document.getElementById(this.options.canvas) as HTMLCanvasElement;\n // cast to HTMLCanvasElement in else of ternary\n // should we do a safety check and throw if it's not actually HTMLCanvasElement?\n }\n this.width = this.canvas.width;\n this.height = this.canvas.height;\n\n if (this._hasInvalidDimensions()) {\n this.fire(new ErrorEvent(new Error('Canvas dimensions cannot be less than or equal to zero.')));\n return;\n }\n\n this.play = function() {\n this._playing = true;\n this.map.triggerRepaint();\n };\n\n this.pause = function() {\n if (this._playing) {\n this.prepare();\n this._playing = false;\n }\n };\n\n this._finishLoading();\n }\n\n /**\n * Returns the HTML `canvas` element.\n *\n * @returns The HTML `canvas` element.\n */\n getCanvas(): HTMLCanvasElement {\n return this.canvas;\n }\n\n onAdd(map: Map) {\n this.map = map;\n this.load();\n if (this.canvas) {\n if (this.animate) this.play();\n }\n }\n\n onRemove() {\n this.pause();\n }\n\n prepare() {\n let resize = false;\n if (this.canvas.width !== this.width) {\n this.width = this.canvas.width;\n resize = true;\n }\n if (this.canvas.height !== this.height) {\n this.height = this.canvas.height;\n resize = true;\n }\n\n if (this._hasInvalidDimensions()) return;\n\n if (Object.keys(this.tiles).length === 0) return; // not enough data for current position\n\n const context = this.map.painter.context;\n const gl = context.gl;\n\n if (!this.texture) {\n this.texture = new Texture(context, this.canvas, gl.RGBA, {premultiply: true});\n } else if (resize || this._playing) {\n this.texture.update(this.canvas, {premultiply: true});\n }\n\n let newTilesLoaded = false;\n for (const w in this.tiles) {\n const tile = this.tiles[w];\n if (tile.state !== 'loaded') {\n tile.state = 'loaded';\n tile.texture = this.texture;\n newTilesLoaded = true;\n }\n }\n\n if (newTilesLoaded) {\n this.fire(new Event('data', {dataType: 'source', sourceDataType: 'idle', sourceId: this.id}));\n }\n }\n\n serialize(): CanvasSourceSpecification {\n return {\n type: 'canvas',\n coordinates: this.coordinates\n };\n }\n\n hasTransition() {\n return this._playing;\n }\n\n _hasInvalidDimensions() {\n for (const x of [this.canvas.width, this.canvas.height]) {\n if (isNaN(x) || x <= 0) return true;\n }\n return false;\n }\n}\n","import {VectorTileSource} from '../source/vector_tile_source';\nimport {RasterTileSource} from '../source/raster_tile_source';\nimport {RasterDEMTileSource} from '../source/raster_dem_tile_source';\nimport {GeoJSONSource} from '../source/geojson_source';\nimport {VideoSource} from '../source/video_source';\nimport {ImageSource} from '../source/image_source';\nimport {CanvasSource} from '../source/canvas_source';\nimport {type Dispatcher} from '../util/dispatcher';\n\nimport type {SourceSpecification} from '@maplibre/maplibre-gl-style-spec';\nimport type {Event, Evented} from '../util/evented';\nimport type {Map} from '../ui/map';\nimport type {Tile} from './tile';\nimport type {OverscaledTileID, CanonicalTileID} from './tile_id';\nimport type {CanvasSourceSpecification} from '../source/canvas_source';\nimport {type CalculateTileZoomFunction} from '../geo/projection/covering_tiles';\n\nconst registeredSources = {} as {[key:string]: SourceClass};\n\n/**\n * The `Source` interface must be implemented by each source type, including \"core\" types (`vector`, `raster`,\n * `video`, etc.) and all custom, third-party types.\n *\n * **Event** `data` - Fired with `{dataType: 'source', sourceDataType: 'metadata'}` to indicate that any necessary metadata\n * has been loaded so that it's okay to call `loadTile`; and with `{dataType: 'source', sourceDataType: 'content'}`\n * to indicate that the source data has changed, so that any current caches should be flushed.\n *\n * @group Sources\n */\nexport interface Source {\n readonly type: string;\n /**\n * The id for the source. Must not be used by any existing source.\n */\n id: string;\n /**\n * The minimum zoom level for the source.\n */\n minzoom: number;\n /**\n * The maximum zoom level for the source.\n */\n maxzoom: number;\n /**\n * The tile size for the source.\n */\n tileSize: number;\n /**\n * The attribution for the source.\n */\n attribution?: string;\n /**\n * `true` if zoom levels are rounded to the nearest integer in the source data, `false` if they are floor-ed to the nearest integer.\n */\n roundZoom?: boolean;\n /**\n * `false` if tiles can be drawn outside their boundaries, `true` if they cannot.\n */\n isTileClipped?: boolean;\n tileID?: CanonicalTileID;\n /**\n * `true` if tiles should be sent back to the worker for each overzoomed zoom level, `false` if not.\n */\n reparseOverscaled?: boolean;\n vectorLayerIds?: Array;\n /**\n * True if the source has transition, false otherwise.\n */\n hasTransition(): boolean;\n /**\n * True if the source is loaded, false otherwise.\n */\n loaded(): boolean;\n /**\n * An ability to fire an event to all the listeners, see {@link Evented}\n * @param event - The event to fire\n */\n fire(event: Event): unknown;\n /**\n * This method is called when the source is added to the map.\n * @param map - The map instance\n */\n onAdd?(map: Map): void;\n /**\n * This method is called when the source is removed from the map.\n * @param map - The map instance\n */\n onRemove?(map: Map): void;\n /**\n * This method does the heavy lifting of loading a tile.\n * In most cases it will defer the work to the relevant worker source.\n * @param tile - The tile to load\n */\n loadTile(tile: Tile): Promise;\n /**\n * True is the tile is part of the source, false otherwise.\n * @param tileID - The tile ID\n */\n hasTile?(tileID: OverscaledTileID): boolean;\n /**\n * Allows to abort a tile loading.\n * @param tile - The tile to abort\n */\n abortTile?(tile: Tile): Promise;\n /**\n * Allows to unload a tile.\n * @param tile - The tile to unload\n */\n unloadTile?(tile: Tile): Promise;\n /**\n * @returns A plain (stringifiable) JS object representing the current state of the source.\n * Creating a source using the returned object as the `options` should result in a Source that is\n * equivalent to this one.\n */\n serialize(): any;\n /**\n * Allows to execute a prepare step before the source is used.\n */\n prepare?(): void;\n /**\n * Optional function to redefine how tiles are loaded at high pitch angles.\n */\n calculateTileZoom?: CalculateTileZoomFunction;\n}\n\n/**\n * A general definition of a {@link Source} class for factory usage\n */\nexport type SourceClass = {\n new (id: string, specification: SourceSpecification | CanvasSourceSpecification, dispatcher: Dispatcher, eventedParent: Evented): Source;\n}\n\n/**\n * Creates a tiled data source instance given an options object.\n *\n * @param id - The id for the source. Must not be used by any existing source.\n * @param specification - Source options, specific to the source type (except for `options.type`, which is always required).\n * @param source - A source definition object compliant with\n * [`maplibre-gl-style-spec`](https://maplibre.org/maplibre-style-spec/#sources) or, for a third-party source type,\n * with that type's requirements.\n * @param dispatcher - A {@link Dispatcher} instance, which can be used to send messages to the workers.\n * @returns a newly created source\n */\nexport const create = (id: string, specification: SourceSpecification | CanvasSourceSpecification, dispatcher: Dispatcher, eventedParent: Evented): Source => {\n\n const Class = getSourceType(specification.type);\n const source = new Class(id, specification, dispatcher, eventedParent);\n\n if (source.id !== id) {\n throw new Error(`Expected Source id to be ${id} instead of ${source.id}`);\n }\n\n return source;\n};\n\nconst getSourceType = (name: string): SourceClass => {\n switch (name) {\n case 'geojson':\n return GeoJSONSource;\n case 'image':\n return ImageSource;\n case 'raster':\n return RasterTileSource;\n case 'raster-dem':\n return RasterDEMTileSource;\n case 'vector':\n return VectorTileSource;\n case 'video':\n return VideoSource;\n case 'canvas':\n return CanvasSource;\n }\n return registeredSources[name];\n};\n\nconst setSourceType = (name: string, type: SourceClass) => {\n registeredSources[name] = type;\n};\n\n/**\n * Adds a custom source type, making it available for use with {@link Map#addSource}.\n * @param name - The name of the source type; source definition objects use this name in the `{type: ...}` field.\n * @param SourceType - A {@link SourceClass} - which is a constructor for the `Source` interface.\n * @returns a promise that is resolved when the source type is ready or rejected with an error.\n */\nexport const addSourceType = async (name: string, SourceType: SourceClass): Promise => {\n if (getSourceType(name)) {\n throw new Error(`A source type called \"${name}\" already exists.`);\n }\n setSourceType(name, SourceType);\n};\n","/**\n * The possible option of the plugin's status\n *\n * `unavailable`: Not loaded.\n *\n * `deferred`: The plugin URL has been specified, but loading has been deferred.\n *\n * `requested`: at least one tile needs RTL to render, but the plugin has not been set\n *\n * `loading`: RTL is in the process of being loaded by worker.\n *\n * `loaded`: The plugin is now loaded\n *\n * `error`: The plugin failed to load\n */\nexport type RTLPluginStatus =\n 'unavailable' |\n 'deferred' |\n 'requested' |\n 'loading' |\n 'loaded' |\n 'error';\n\n/**\n * The RTL plugin state\n */\nexport type PluginState = {\n pluginStatus: RTLPluginStatus;\n pluginURL: string;\n};\n\nexport const RTLPluginLoadedEventName = 'RTLPluginLoaded';\n\n","\nimport {browser} from '../util/browser';\nimport {Event, Evented} from '../util/evented';\nimport {type RTLPluginStatus, RTLPluginLoadedEventName, type PluginState} from './rtl_text_plugin_status';\nimport {type Dispatcher, getGlobalDispatcher} from '../util/dispatcher';\nimport {MessageType} from '../util/actor_messages';\n\nclass RTLMainThreadPlugin extends Evented {\n status: RTLPluginStatus = 'unavailable';\n url: string = null;\n dispatcher: Dispatcher = getGlobalDispatcher();\n\n /** Sync RTL plugin state by broadcasting a message to the worker */\n _syncState(statusToSend: RTLPluginStatus): Promise {\n this.status = statusToSend;\n return this.dispatcher.broadcast(MessageType.syncRTLPluginState, {pluginStatus: statusToSend, pluginURL: this.url})\n .catch((e: any) => {\n this.status = 'error';\n throw e;\n });\n }\n\n /** This one is exposed to outside */\n getRTLTextPluginStatus(): RTLPluginStatus {\n return this.status;\n }\n\n clearRTLTextPlugin(): void {\n this.status = 'unavailable';\n this.url = null;\n }\n\n async setRTLTextPlugin(url: string, deferred: boolean = false): Promise {\n if (this.url) {\n // error\n throw new Error('setRTLTextPlugin cannot be called multiple times.');\n }\n\n this.url = browser.resolveURL(url);\n if (!this.url) {\n throw new Error(`requested url ${url} is invalid`);\n }\n if (this.status === 'unavailable') {\n\n // from initial state:\n if (deferred) {\n\n this.status = 'deferred';\n // fire and forget: in this case it does not need wait for the broadcasting result\n // it is important to sync the deferred status once because\n // symbol_bucket will be checking it in worker\n this._syncState(this.status);\n\n } else {\n return this._requestImport();\n }\n\n } else if (this.status === 'requested') {\n return this._requestImport();\n }\n }\n\n /** Send a message to worker which will import the RTL plugin script */\n async _requestImport() : Promise {\n\n // all errors/exceptions will be handled by _syncState\n await this._syncState('loading');\n this.status = 'loaded';\n this.fire(new Event(RTLPluginLoadedEventName));\n }\n\n /** Start a lazy loading process of RTL plugin */\n lazyLoad(): void {\n if (this.status === 'unavailable') {\n this.status = 'requested';\n } else if (this.status === 'deferred') {\n this._requestImport();\n }\n }\n}\n\nlet rtlMainThreadPlugin: RTLMainThreadPlugin = null;\n\nexport function rtlMainThreadPluginFactory(): RTLMainThreadPlugin {\n if (!rtlMainThreadPlugin) {\n rtlMainThreadPlugin = new RTLMainThreadPlugin();\n }\n return rtlMainThreadPlugin;\n}\n","import {uniqueId, parseCacheControl} from '../util/util';\nimport {deserialize as deserializeBucket} from '../data/bucket';\nimport '../data/feature_index';\nimport type {FeatureIndex} from '../data/feature_index';\nimport {GeoJSONFeature} from '../util/vectortile_to_geojson';\nimport {featureFilter} from '@maplibre/maplibre-gl-style-spec';\nimport {SymbolBucket} from '../data/bucket/symbol_bucket';\nimport {CollisionBoxArray} from '../data/array_types.g';\nimport {Texture} from '../render/texture';\nimport {browser} from '../util/browser';\nimport {toEvaluationFeature} from '../data/evaluation_feature';\nimport {EvaluationParameters} from '../style/evaluation_parameters';\nimport {type SourceFeatureState} from '../source/source_state';\nimport {rtlMainThreadPluginFactory} from './rtl_text_plugin_main_thread';\n\nconst CLOCK_SKEW_RETRY_TIMEOUT = 30000;\n\nimport type {Bucket} from '../data/bucket';\nimport type {StyleLayer} from '../style/style_layer';\nimport type {WorkerTileResult} from './worker_source';\nimport type {Actor} from '../util/actor';\nimport type {DEMData} from '../data/dem_data';\nimport type {AlphaImage} from '../util/image';\nimport type {ImageAtlas} from '../render/image_atlas';\nimport type {ImageManager} from '../render/image_manager';\nimport type {Context} from '../gl/context';\nimport type {OverscaledTileID} from './tile_id';\nimport type {Framebuffer} from '../gl/framebuffer';\nimport type {IReadonlyTransform} from '../geo/transform_interface';\nimport type {LayerFeatureStates} from './source_state';\nimport type {FilterSpecification} from '@maplibre/maplibre-gl-style-spec';\nimport type Point from '@mapbox/point-geometry';\nimport {type mat4} from 'gl-matrix';\nimport type {VectorTileLayer} from '@mapbox/vector-tile';\nimport {type ExpiryData} from '../util/ajax';\nimport {type QueryRenderedFeaturesOptionsStrict} from './query_features';\n\n/**\n * The tile's state, can be:\n *\n * - `loading` Tile data is in the process of loading.\n * - `loaded` Tile data has been loaded. Tile can be rendered.\n * - `reloading` Tile data has been loaded and is being updated. Tile can be rendered.\n * - `unloaded` Tile data has been deleted.\n * - `errored` Tile data was not loaded because of an error.\n * - `expired` Tile data was previously loaded, but has expired per its HTTP headers and is in the process of refreshing.\n */\nexport type TileState = 'loading' | 'loaded' | 'reloading' | 'unloaded' | 'errored' | 'expired';\n\n/**\n * A tile object is the combination of a Coordinate, which defines\n * its place, as well as a unique ID and data tracking for its content\n */\nexport class Tile {\n tileID: OverscaledTileID;\n uid: number;\n uses: number;\n tileSize: number;\n buckets: {[_: string]: Bucket};\n latestFeatureIndex: FeatureIndex;\n latestRawTileData: ArrayBuffer;\n imageAtlas: ImageAtlas;\n imageAtlasTexture: Texture;\n glyphAtlasImage: AlphaImage;\n glyphAtlasTexture: Texture;\n expirationTime: any;\n expiredRequestCount: number;\n state: TileState;\n timeAdded: number = 0;\n fadeEndTime: number = 0;\n collisionBoxArray: CollisionBoxArray;\n redoWhenDone: boolean;\n showCollisionBoxes: boolean;\n placementSource: any;\n actor: Actor;\n vtLayers: {[_: string]: VectorTileLayer};\n\n neighboringTiles: any;\n dem: DEMData;\n demMatrix: mat4;\n aborted: boolean;\n needsHillshadePrepare: boolean;\n needsTerrainPrepare: boolean;\n abortController: AbortController;\n texture: any;\n fbo: Framebuffer;\n demTexture: Texture;\n refreshedUponExpiration: boolean;\n reloadPromise: {resolve: () => void; reject: () => void};\n resourceTiming: Array;\n queryPadding: number;\n\n symbolFadeHoldUntil: number;\n hasSymbolBuckets: boolean;\n hasRTLText: boolean;\n dependencies: any;\n rtt: Array<{id: number; stamp: number}>;\n rttCoords: {[_:string]: string};\n\n /**\n * @param tileID - the tile ID\n * @param size - The tile size\n */\n constructor(tileID: OverscaledTileID, size: number) {\n this.tileID = tileID;\n this.uid = uniqueId();\n this.uses = 0;\n this.tileSize = size;\n this.buckets = {};\n this.expirationTime = null;\n this.queryPadding = 0;\n this.hasSymbolBuckets = false;\n this.hasRTLText = false;\n this.dependencies = {};\n this.rtt = [];\n this.rttCoords = {};\n\n // Counts the number of times a response was already expired when\n // received. We're using this to add a delay when making a new request\n // so we don't have to keep retrying immediately in case of a server\n // serving expired tiles.\n this.expiredRequestCount = 0;\n\n this.state = 'loading';\n }\n\n registerFadeDuration(duration: number) {\n const fadeEndTime = duration + this.timeAdded;\n\n if (fadeEndTime < this.fadeEndTime) {\n return;\n }\n\n this.fadeEndTime = fadeEndTime;\n }\n\n wasRequested() {\n return this.state === 'errored' || this.state === 'loaded' || this.state === 'reloading';\n }\n\n clearTextures(painter: any) {\n if (this.demTexture) painter.saveTileTexture(this.demTexture);\n this.demTexture = null;\n }\n\n /**\n * Given a data object with a 'buffers' property, load it into\n * this tile's elementGroups and buffers properties and set loaded\n * to true. If the data is null, like in the case of an empty\n * GeoJSON tile, no-op but still set loaded to true.\n * @param data - The data from the worker\n * @param painter - the painter\n * @param justReloaded - `true` to just reload\n */\n loadVectorData(data: WorkerTileResult, painter: any, justReloaded?: boolean | null) {\n if (this.hasData()) {\n this.unloadVectorData();\n }\n\n this.state = 'loaded';\n\n // empty GeoJSON tile\n if (!data) {\n this.collisionBoxArray = new CollisionBoxArray();\n return;\n }\n\n if (data.featureIndex) {\n this.latestFeatureIndex = data.featureIndex;\n if (data.rawTileData) {\n // Only vector tiles have rawTileData, and they won't update it for\n // 'reloadTile'\n this.latestRawTileData = data.rawTileData;\n this.latestFeatureIndex.rawTileData = data.rawTileData;\n } else if (this.latestRawTileData) {\n // If rawTileData hasn't updated, hold onto a pointer to the last\n // one we received\n this.latestFeatureIndex.rawTileData = this.latestRawTileData;\n }\n }\n this.collisionBoxArray = data.collisionBoxArray;\n this.buckets = deserializeBucket(data.buckets, painter?.style);\n\n this.hasSymbolBuckets = false;\n for (const id in this.buckets) {\n const bucket = this.buckets[id];\n if (bucket instanceof SymbolBucket) {\n this.hasSymbolBuckets = true;\n if (justReloaded) {\n bucket.justReloaded = true;\n } else {\n break;\n }\n }\n }\n\n this.hasRTLText = false;\n if (this.hasSymbolBuckets) {\n for (const id in this.buckets) {\n const bucket = this.buckets[id];\n if (bucket instanceof SymbolBucket) {\n if (bucket.hasRTLText) {\n this.hasRTLText = true;\n rtlMainThreadPluginFactory().lazyLoad();\n break;\n }\n }\n }\n }\n\n this.queryPadding = 0;\n for (const id in this.buckets) {\n const bucket = this.buckets[id];\n this.queryPadding = Math.max(this.queryPadding, painter.style.getLayer(id).queryRadius(bucket));\n }\n\n if (data.imageAtlas) {\n this.imageAtlas = data.imageAtlas;\n }\n if (data.glyphAtlasImage) {\n this.glyphAtlasImage = data.glyphAtlasImage;\n }\n }\n\n /**\n * Release any data or WebGL resources referenced by this tile.\n */\n unloadVectorData() {\n for (const id in this.buckets) {\n this.buckets[id].destroy();\n }\n this.buckets = {};\n\n if (this.imageAtlasTexture) {\n this.imageAtlasTexture.destroy();\n }\n\n if (this.imageAtlas) {\n this.imageAtlas = null;\n }\n\n if (this.glyphAtlasTexture) {\n this.glyphAtlasTexture.destroy();\n }\n\n this.latestFeatureIndex = null;\n this.state = 'unloaded';\n }\n\n getBucket(layer: StyleLayer) {\n return this.buckets[layer.id];\n }\n\n upload(context: Context) {\n for (const id in this.buckets) {\n const bucket = this.buckets[id];\n if (bucket.uploadPending()) {\n bucket.upload(context);\n }\n }\n\n const gl = context.gl;\n if (this.imageAtlas && !this.imageAtlas.uploaded) {\n this.imageAtlasTexture = new Texture(context, this.imageAtlas.image, gl.RGBA);\n this.imageAtlas.uploaded = true;\n }\n\n if (this.glyphAtlasImage) {\n this.glyphAtlasTexture = new Texture(context, this.glyphAtlasImage, gl.ALPHA);\n this.glyphAtlasImage = null;\n }\n }\n\n prepare(imageManager: ImageManager) {\n if (this.imageAtlas) {\n this.imageAtlas.patchUpdatedImages(imageManager, this.imageAtlasTexture);\n }\n }\n\n // Queries non-symbol features rendered for this tile.\n // Symbol features are queried globally\n queryRenderedFeatures(\n layers: {[_: string]: StyleLayer},\n serializedLayers: {[_: string]: any},\n sourceFeatureState: SourceFeatureState,\n queryGeometry: Array,\n cameraQueryGeometry: Array,\n scale: number,\n params: Pick | undefined,\n transform: IReadonlyTransform,\n maxPitchScaleFactor: number,\n pixelPosMatrix: mat4\n ): {[_: string]: Array<{featureIndex: number; feature: GeoJSONFeature}>} {\n if (!this.latestFeatureIndex || !this.latestFeatureIndex.rawTileData)\n return {};\n\n return this.latestFeatureIndex.query({\n queryGeometry,\n cameraQueryGeometry,\n scale,\n tileSize: this.tileSize,\n pixelPosMatrix,\n transform,\n params,\n queryPadding: this.queryPadding * maxPitchScaleFactor\n }, layers, serializedLayers, sourceFeatureState);\n }\n\n querySourceFeatures(result: Array, params?: {\n sourceLayer?: string;\n filter?: FilterSpecification;\n validate?: boolean;\n }) {\n const featureIndex = this.latestFeatureIndex;\n if (!featureIndex || !featureIndex.rawTileData) return;\n\n const vtLayers = featureIndex.loadVTLayers();\n\n const sourceLayer = params && params.sourceLayer ? params.sourceLayer : '';\n const layer = vtLayers._geojsonTileLayer || vtLayers[sourceLayer];\n\n if (!layer) return;\n\n const filter = featureFilter(params && params.filter);\n const {z, x, y} = this.tileID.canonical;\n const coord = {z, x, y};\n\n for (let i = 0; i < layer.length; i++) {\n const feature = layer.feature(i);\n if (filter.needGeometry) {\n const evaluationFeature = toEvaluationFeature(feature, true);\n if (!filter.filter(new EvaluationParameters(this.tileID.overscaledZ), evaluationFeature, this.tileID.canonical)) continue;\n } else if (!filter.filter(new EvaluationParameters(this.tileID.overscaledZ), feature)) {\n continue;\n }\n const id = featureIndex.getId(feature, sourceLayer);\n const geojsonFeature = new GeoJSONFeature(feature, z, x, y, id);\n (geojsonFeature as any).tile = coord;\n result.push(geojsonFeature);\n }\n }\n\n hasData() {\n return this.state === 'loaded' || this.state === 'reloading' || this.state === 'expired';\n }\n\n patternsLoaded() {\n return this.imageAtlas && !!Object.keys(this.imageAtlas.patternPositions).length;\n }\n\n setExpiryData(data: ExpiryData) {\n const prior = this.expirationTime;\n\n if (data.cacheControl) {\n const parsedCC = parseCacheControl(data.cacheControl);\n if (parsedCC['max-age']) this.expirationTime = Date.now() + parsedCC['max-age'] * 1000;\n } else if (data.expires) {\n this.expirationTime = new Date(data.expires).getTime();\n }\n\n if (this.expirationTime) {\n const now = Date.now();\n let isExpired = false;\n\n if (this.expirationTime > now) {\n isExpired = false;\n } else if (!prior) {\n isExpired = true;\n } else if (this.expirationTime < prior) {\n // Expiring date is going backwards:\n // fall back to exponential backoff\n isExpired = true;\n\n } else {\n const delta = this.expirationTime - prior;\n\n if (!delta) {\n // Server is serving the same expired resource over and over: fall\n // back to exponential backoff.\n isExpired = true;\n\n } else {\n // Assume that either the client or the server clock is wrong and\n // try to interpolate a valid expiration date (from the client POV)\n // observing a minimum timeout.\n this.expirationTime = now + Math.max(delta, CLOCK_SKEW_RETRY_TIMEOUT);\n\n }\n }\n\n if (isExpired) {\n this.expiredRequestCount++;\n this.state = 'expired';\n } else {\n this.expiredRequestCount = 0;\n }\n }\n }\n\n getExpiryTimeout() {\n if (this.expirationTime) {\n if (this.expiredRequestCount) {\n return 1000 * (1 << Math.min(this.expiredRequestCount - 1, 31));\n } else {\n // Max value for `setTimeout` implementations is a 32 bit integer; cap this accordingly\n return Math.min(this.expirationTime - new Date().getTime(), Math.pow(2, 31) - 1);\n }\n }\n }\n\n setFeatureState(states: LayerFeatureStates, painter: any) {\n if (!this.latestFeatureIndex ||\n !this.latestFeatureIndex.rawTileData ||\n Object.keys(states).length === 0) {\n return;\n }\n\n const vtLayers = this.latestFeatureIndex.loadVTLayers();\n\n for (const id in this.buckets) {\n if (!painter.style.hasLayer(id)) continue;\n\n const bucket = this.buckets[id];\n // Buckets are grouped by common source-layer\n const sourceLayerId = bucket.layers[0]['sourceLayer'] || '_geojsonTileLayer';\n const sourceLayer = vtLayers[sourceLayerId];\n const sourceLayerStates = states[sourceLayerId];\n if (!sourceLayer || !sourceLayerStates || Object.keys(sourceLayerStates).length === 0) continue;\n\n bucket.update(sourceLayerStates, sourceLayer, this.imageAtlas && this.imageAtlas.patternPositions || {});\n const layer = painter && painter.style && painter.style.getLayer(id);\n if (layer) {\n this.queryPadding = Math.max(this.queryPadding, layer.queryRadius(bucket));\n }\n }\n }\n\n holdingForFade(): boolean {\n return this.symbolFadeHoldUntil !== undefined;\n }\n\n symbolFadeFinished(): boolean {\n return !this.symbolFadeHoldUntil || this.symbolFadeHoldUntil < browser.now();\n }\n\n clearFadeHold() {\n this.symbolFadeHoldUntil = undefined;\n }\n\n setHoldDuration(duration: number) {\n this.symbolFadeHoldUntil = browser.now() + duration;\n }\n\n setDependencies(namespace: string, dependencies: Array) {\n const index = {};\n for (const dep of dependencies) {\n index[dep] = true;\n }\n this.dependencies[namespace] = index;\n }\n\n hasDependency(namespaces: Array, keys: Array) {\n for (const namespace of namespaces) {\n const dependencies = this.dependencies[namespace];\n if (dependencies) {\n for (const key of keys) {\n if (dependencies[key]) {\n return true;\n }\n }\n }\n }\n return false;\n }\n}\n","import type {CollisionBoxArray} from './array_types.g';\nimport type {Style} from '../style/style';\nimport type {TypedStyleLayer} from '../style/style_layer/typed_style_layer';\nimport type {FeatureIndex} from './feature_index';\nimport type {Context} from '../gl/context';\nimport type {FeatureStates} from '../source/source_state';\nimport type {ImagePosition} from '../render/image_atlas';\nimport type {CanonicalTileID} from '../source/tile_id';\nimport type {VectorTileFeature, VectorTileLayer} from '@mapbox/vector-tile';\nimport type Point from '@mapbox/point-geometry';\nimport type {SubdivisionGranularitySetting} from '../render/subdivision_granularity_settings';\n\nexport type BucketParameters = {\n index: number;\n layers: Array;\n zoom: number;\n pixelRatio: number;\n overscaling: number;\n collisionBoxArray: CollisionBoxArray;\n sourceLayerIndex: number;\n sourceID: string;\n};\n\nexport type PopulateParameters = {\n featureIndex: FeatureIndex;\n iconDependencies: {};\n patternDependencies: {};\n glyphDependencies: {};\n availableImages: Array;\n subdivisionGranularity: SubdivisionGranularitySetting;\n};\n\nexport type IndexedFeature = {\n feature: VectorTileFeature;\n id: number | string;\n index: number;\n sourceLayerIndex: number;\n};\n\nexport type BucketFeature = {\n index: number;\n sourceLayerIndex: number;\n geometry: Array>;\n properties: any;\n type: 0 | 1 | 2 | 3;\n id?: any;\n readonly patterns: {\n [_: string]: {\n 'min': string;\n 'mid': string;\n 'max': string;\n };\n };\n sortKey?: number;\n};\n\n/**\n * The `Bucket` interface is the single point of knowledge about turning vector\n * tiles into WebGL buffers.\n *\n * `Bucket` is an abstract interface. An implementation exists for each style layer type.\n * Create a bucket via the `StyleLayer#createBucket` method.\n *\n * The concrete bucket types, using layout options from the style layer,\n * transform feature geometries into vertex and index data for use by the\n * vertex shader. They also (via `ProgramConfiguration`) use feature\n * properties and the zoom level to populate the attributes needed for\n * data-driven styling.\n *\n * Buckets are designed to be built on a worker thread and then serialized and\n * transferred back to the main thread for rendering. On the worker side, a\n * bucket's vertex, index, and attribute data is stored in `bucket.arrays: ArrayGroup`.\n * When a bucket's data is serialized and sent back to the main thread,\n * is gets deserialized (using `new Bucket(serializedBucketData)`, with\n * the array data now stored in `bucket.buffers: BufferGroup`. BufferGroups\n * hold the same data as ArrayGroups, but are tuned for consumption by WebGL.\n */\nexport interface Bucket {\n layerIds: Array;\n hasPattern: boolean;\n readonly layers: Array;\n readonly stateDependentLayers: Array;\n readonly stateDependentLayerIds: Array;\n populate(features: Array, options: PopulateParameters, canonical: CanonicalTileID): void;\n update(states: FeatureStates, vtLayer: VectorTileLayer, imagePositions: {[_: string]: ImagePosition}): void;\n isEmpty(): boolean;\n upload(context: Context): void;\n uploadPending(): boolean;\n /**\n * Release the WebGL resources associated with the buffers. Note that because\n * buckets are shared between layers having the same layout properties, they\n * must be destroyed in groups (all buckets for a tile, or all symbol buckets).\n */\n destroy(): void;\n}\n\nexport function deserialize(input: Array, style: Style): {[_: string]: Bucket} {\n const output = {};\n\n // Guard against the case where the map's style has been set to null while\n // this bucket has been parsing.\n if (!style) return output;\n\n for (const bucket of input) {\n const layers = bucket.layerIds\n .map((id) => style.getLayer(id))\n .filter(Boolean);\n\n if (layers.length === 0) {\n continue;\n }\n\n // look up StyleLayer objects from layer ids (since we don't\n // want to waste time serializing/copying them from the worker)\n (bucket as any).layers = layers;\n if (bucket.stateDependentLayerIds) {\n (bucket as any).stateDependentLayers = bucket.stateDependentLayerIds.map((lId) => layers.filter((l) => l.id === lId)[0]);\n }\n for (const layer of layers) {\n output[layer.id] = bucket;\n }\n }\n\n return output;\n}\n","import {type OverscaledTileID} from './tile_id';\nimport type {Tile} from './tile';\n\n/**\n * @internal\n * A [least-recently-used cache](https://en.wikipedia.org/wiki/Cache_algorithms)\n * with hash lookup made possible by keeping a list of keys in parallel to\n * an array of dictionary of values\n *\n * source_cache offloads currently unused tiles to this cache, and when a tile gets used again,\n * it is also removed from this cache. Thus addition is the only operation that counts as \"usage\"\n * for the purposes of LRU behaviour.\n */\nexport class TileCache {\n max: number;\n data: {\n [key: string]: Array<{\n value: Tile;\n timeout: ReturnType;\n }>;\n };\n order: Array;\n onRemove: (element: Tile) => void;\n /**\n * @param max - number of permitted values\n * @param onRemove - callback called with items when they expire\n */\n constructor(max: number, onRemove: (element: Tile) => void) {\n this.max = max;\n this.onRemove = onRemove;\n this.reset();\n }\n\n /**\n * Clear the cache\n *\n * @returns this cache\n */\n reset() {\n for (const key in this.data) {\n for (const removedData of this.data[key]) {\n if (removedData.timeout) clearTimeout(removedData.timeout);\n this.onRemove(removedData.value);\n }\n }\n\n this.data = {};\n this.order = [];\n\n return this;\n }\n\n /**\n * Add a key, value combination to the cache, trimming its size if this pushes\n * it over max length.\n *\n * @param tileID - lookup key for the item\n * @param data - tile data\n *\n * @returns this cache\n */\n add(tileID: OverscaledTileID, data: Tile, expiryTimeout: number | void) {\n const key = tileID.wrapped().key;\n if (this.data[key] === undefined) {\n this.data[key] = [];\n }\n\n const dataWrapper = {\n value: data,\n timeout: undefined\n };\n\n if (expiryTimeout !== undefined) {\n dataWrapper.timeout = setTimeout(() => {\n this.remove(tileID, dataWrapper);\n }, expiryTimeout as number);\n }\n\n this.data[key].push(dataWrapper);\n this.order.push(key);\n\n if (this.order.length > this.max) {\n const removedData = this._getAndRemoveByKey(this.order[0]);\n if (removedData) this.onRemove(removedData);\n }\n\n return this;\n }\n\n /**\n * Determine whether the value attached to `key` is present\n *\n * @param tileID - the key to be looked-up\n * @returns whether the cache has this value\n */\n has(tileID: OverscaledTileID): boolean {\n return tileID.wrapped().key in this.data;\n }\n\n /**\n * Get the value attached to a specific key and remove data from cache.\n * If the key is not found, returns `null`\n *\n * @param tileID - the key to look up\n * @returns the tile data, or null if it isn't found\n */\n getAndRemove(tileID: OverscaledTileID): Tile {\n if (!this.has(tileID)) { return null; }\n return this._getAndRemoveByKey(tileID.wrapped().key);\n }\n\n /*\n * Get and remove the value with the specified key.\n */\n _getAndRemoveByKey(key: string): Tile {\n const data = this.data[key].shift();\n if (data.timeout) clearTimeout(data.timeout);\n\n if (this.data[key].length === 0) {\n delete this.data[key];\n }\n this.order.splice(this.order.indexOf(key), 1);\n\n return data.value;\n }\n\n /*\n * Get the value with the specified (wrapped tile) key.\n */\n getByKey(key: string): Tile {\n const data = this.data[key];\n return data ? data[0].value : null;\n }\n\n /**\n * Get the value attached to a specific key without removing data\n * from the cache. If the key is not found, returns `null`\n *\n * @param tileID - the key to look up\n * @returns the tile data, or null if it isn't found\n */\n get(tileID: OverscaledTileID): Tile {\n if (!this.has(tileID)) { return null; }\n\n const data = this.data[tileID.wrapped().key][0];\n return data.value;\n }\n\n /**\n * Remove a key/value combination from the cache.\n *\n * @param tileID - the key for the pair to delete\n * @param value - If a value is provided, remove that exact version of the value.\n * @returns this cache\n */\n remove(tileID: OverscaledTileID, value?: {\n value: Tile;\n timeout: ReturnType;\n }) {\n if (!this.has(tileID)) { return this; }\n const key = tileID.wrapped().key;\n\n const dataIndex = value === undefined ? 0 : this.data[key].indexOf(value);\n const data = this.data[key][dataIndex];\n this.data[key].splice(dataIndex, 1);\n if (data.timeout) clearTimeout(data.timeout);\n if (this.data[key].length === 0) {\n delete this.data[key];\n }\n this.onRemove(data.value);\n this.order.splice(this.order.indexOf(key), 1);\n\n return this;\n }\n\n /**\n * Change the max size of the cache.\n *\n * @param max - the max size of the cache\n * @returns this cache\n */\n setMaxSize(max: number): TileCache {\n this.max = max;\n\n while (this.order.length > this.max) {\n const removedData = this._getAndRemoveByKey(this.order[0]);\n if (removedData) this.onRemove(removedData);\n }\n\n return this;\n }\n\n /**\n * Remove entries that do not pass a filter function. Used for removing\n * stale tiles from the cache.\n *\n * @param filterFn - Determines whether the tile is filtered. If the supplied function returns false, the tile will be filtered out.\n */\n filter(filterFn: (tile: Tile) => boolean) {\n const removed = [];\n for (const key in this.data) {\n for (const entry of this.data[key]) {\n if (!filterFn(entry.value)) {\n removed.push(entry);\n }\n }\n }\n for (const r of removed) {\n this.remove(r.value.tileID, r);\n }\n }\n}\n","import {extend} from '../util/util';\nimport {type Tile} from './tile';\nimport type {FeatureState} from '@maplibre/maplibre-gl-style-spec';\n\nexport type FeatureStates = {[featureId: string]: FeatureState};\nexport type LayerFeatureStates = {[layer: string]: FeatureStates};\n\n/**\n * @internal\n * SourceFeatureState manages the state and pending changes\n * to features in a source, separated by source layer.\n * stateChanges and deletedStates batch all changes to the tile (updates and removes, respectively)\n * between coalesce() events. addFeatureState() and removeFeatureState() also update their counterpart's\n * list of changes, such that coalesce() can apply the proper state changes while agnostic to the order of operations.\n * In deletedStates, all null's denote complete removal of state at that scope\n*/\nexport class SourceFeatureState {\n state: LayerFeatureStates;\n stateChanges: LayerFeatureStates;\n deletedStates: {};\n\n constructor() {\n this.state = {};\n this.stateChanges = {};\n this.deletedStates = {};\n }\n\n updateState(sourceLayer: string, featureId: number | string, newState: any) {\n const feature = String(featureId);\n this.stateChanges[sourceLayer] = this.stateChanges[sourceLayer] || {};\n this.stateChanges[sourceLayer][feature] = this.stateChanges[sourceLayer][feature] || {};\n extend(this.stateChanges[sourceLayer][feature], newState);\n\n if (this.deletedStates[sourceLayer] === null) {\n this.deletedStates[sourceLayer] = {};\n for (const ft in this.state[sourceLayer]) {\n if (ft !== feature) this.deletedStates[sourceLayer][ft] = null;\n }\n } else {\n const featureDeletionQueued = this.deletedStates[sourceLayer] && this.deletedStates[sourceLayer][feature] === null;\n if (featureDeletionQueued) {\n this.deletedStates[sourceLayer][feature] = {};\n for (const prop in this.state[sourceLayer][feature]) {\n if (!newState[prop]) this.deletedStates[sourceLayer][feature][prop] = null;\n }\n } else {\n for (const key in newState) {\n const deletionInQueue = this.deletedStates[sourceLayer] && this.deletedStates[sourceLayer][feature] && this.deletedStates[sourceLayer][feature][key] === null;\n if (deletionInQueue) delete this.deletedStates[sourceLayer][feature][key];\n }\n }\n }\n }\n\n removeFeatureState(sourceLayer: string, featureId?: number | string, key?: string) {\n const sourceLayerDeleted = this.deletedStates[sourceLayer] === null;\n if (sourceLayerDeleted) return;\n\n const feature = String(featureId);\n\n this.deletedStates[sourceLayer] = this.deletedStates[sourceLayer] || {};\n\n if (key && featureId !== undefined) {\n if (this.deletedStates[sourceLayer][feature] !== null) {\n this.deletedStates[sourceLayer][feature] = this.deletedStates[sourceLayer][feature] || {};\n this.deletedStates[sourceLayer][feature][key] = null;\n }\n } else if (featureId !== undefined) {\n const updateInQueue = this.stateChanges[sourceLayer] && this.stateChanges[sourceLayer][feature];\n if (updateInQueue) {\n this.deletedStates[sourceLayer][feature] = {};\n for (key in this.stateChanges[sourceLayer][feature]) this.deletedStates[sourceLayer][feature][key] = null;\n\n } else {\n this.deletedStates[sourceLayer][feature] = null;\n }\n } else {\n this.deletedStates[sourceLayer] = null;\n }\n\n }\n\n getState(sourceLayer: string, featureId: number | string) {\n const feature = String(featureId);\n const base = this.state[sourceLayer] || {};\n const changes = this.stateChanges[sourceLayer] || {};\n\n const reconciledState = extend({}, base[feature], changes[feature]);\n\n //return empty object if the whole source layer is awaiting deletion\n if (this.deletedStates[sourceLayer] === null) return {};\n else if (this.deletedStates[sourceLayer]) {\n const featureDeletions = this.deletedStates[sourceLayer][featureId];\n if (featureDeletions === null) return {};\n for (const prop in featureDeletions) delete reconciledState[prop];\n }\n return reconciledState;\n }\n\n initializeTileState(tile: Tile, painter: any) {\n tile.setFeatureState(this.state, painter);\n }\n\n coalesceChanges(tiles: {\n [_ in any]: Tile;\n }, painter: any) {\n //track changes with full state objects, but only for features that got modified\n const featuresChanged: LayerFeatureStates = {};\n\n for (const sourceLayer in this.stateChanges) {\n this.state[sourceLayer] = this.state[sourceLayer] || {};\n const layerStates = {};\n for (const feature in this.stateChanges[sourceLayer]) {\n if (!this.state[sourceLayer][feature]) this.state[sourceLayer][feature] = {};\n extend(this.state[sourceLayer][feature], this.stateChanges[sourceLayer][feature]);\n layerStates[feature] = this.state[sourceLayer][feature];\n }\n featuresChanged[sourceLayer] = layerStates;\n }\n\n for (const sourceLayer in this.deletedStates) {\n this.state[sourceLayer] = this.state[sourceLayer] || {};\n const layerStates = {};\n\n if (this.deletedStates[sourceLayer] === null) {\n for (const ft in this.state[sourceLayer]) {\n layerStates[ft] = {};\n this.state[sourceLayer][ft] = {};\n }\n } else {\n for (const feature in this.deletedStates[sourceLayer]) {\n const deleteWholeFeatureState = this.deletedStates[sourceLayer][feature] === null;\n if (deleteWholeFeatureState) this.state[sourceLayer][feature] = {};\n else {\n for (const key of Object.keys(this.deletedStates[sourceLayer][feature])) {\n delete this.state[sourceLayer][feature][key];\n }\n }\n layerStates[feature] = this.state[sourceLayer][feature];\n }\n }\n\n featuresChanged[sourceLayer] = featuresChanged[sourceLayer] || {};\n extend(featuresChanged[sourceLayer], layerStates);\n }\n\n this.stateChanges = {};\n this.deletedStates = {};\n\n if (Object.keys(featuresChanged).length === 0) return;\n\n for (const id in tiles) {\n const tile = tiles[id];\n tile.setFeatureState(featuresChanged, painter);\n }\n }\n}\n","import {interpolates} from '@maplibre/maplibre-gl-style-spec';\nimport Point from '@mapbox/point-geometry';\nimport {clamp, type Complete, type RequireAtLeastOne} from '../util/util';\n\n/**\n * An `EdgeInset` object represents screen space padding applied to the edges of the viewport.\n * This shifts the apparent center or the vanishing point of the map. This is useful for adding floating UI elements\n * on top of the map and having the vanishing point shift as UI elements resize.\n *\n * @group Geography and Geometry\n */\nexport class EdgeInsets {\n /**\n * @defaultValue 0\n */\n top: number;\n /**\n * @defaultValue 0\n */\n bottom: number;\n /**\n * @defaultValue 0\n */\n left: number;\n /**\n * @defaultValue 0\n */\n right: number;\n\n constructor(top: number = 0, bottom: number = 0, left: number = 0, right: number = 0) {\n if (isNaN(top) || top < 0 ||\n isNaN(bottom) || bottom < 0 ||\n isNaN(left) || left < 0 ||\n isNaN(right) || right < 0\n ) {\n throw new Error('Invalid value for edge-insets, top, bottom, left and right must all be numbers');\n }\n\n this.top = top;\n this.bottom = bottom;\n this.left = left;\n this.right = right;\n }\n\n /**\n * Interpolates the inset in-place.\n * This maintains the current inset value for any inset not present in `target`.\n * @param start - interpolation start\n * @param target - interpolation target\n * @param t - interpolation step/weight\n * @returns the insets\n */\n interpolate(start: PaddingOptions | EdgeInsets, target: PaddingOptions, t: number): EdgeInsets {\n if (target.top != null && start.top != null) this.top = interpolates.number(start.top, target.top, t);\n if (target.bottom != null && start.bottom != null) this.bottom = interpolates.number(start.bottom, target.bottom, t);\n if (target.left != null && start.left != null) this.left = interpolates.number(start.left, target.left, t);\n if (target.right != null && start.right != null) this.right = interpolates.number(start.right, target.right, t);\n\n return this;\n }\n\n /**\n * Utility method that computes the new apprent center or vanishing point after applying insets.\n * This is in pixels and with the top left being (0.0) and +y being downwards.\n *\n * @param width - the width\n * @param height - the height\n * @returns the point\n */\n getCenter(width: number, height: number): Point {\n // Clamp insets so they never overflow width/height and always calculate a valid center\n const x = clamp((this.left + width - this.right) / 2, 0, width);\n const y = clamp((this.top + height - this.bottom) / 2, 0, height);\n\n return new Point(x, y);\n }\n\n equals(other: PaddingOptions): boolean {\n return this.top === other.top &&\n this.bottom === other.bottom &&\n this.left === other.left &&\n this.right === other.right;\n }\n\n clone(): EdgeInsets {\n return new EdgeInsets(this.top, this.bottom, this.left, this.right);\n }\n\n /**\n * Returns the current state as json, useful when you want to have a\n * read-only representation of the inset.\n *\n * @returns state as json\n */\n toJSON(): Complete {\n return {\n top: this.top,\n bottom: this.bottom,\n left: this.left,\n right: this.right\n };\n }\n}\n\n/**\n * Options for setting padding on calls to methods such as {@link Map#fitBounds}, {@link Map#fitScreenCoordinates}, and {@link Map#setPadding}. Adjust these options to set the amount of padding in pixels added to the edges of the canvas. Set a uniform padding on all edges or individual values for each edge. All properties of this object must be\n * non-negative integers.\n *\n * @group Geography and Geometry\n *\n * @example\n * ```ts\n * let bbox = [[-79, 43], [-73, 45]];\n * map.fitBounds(bbox, {\n * padding: {top: 10, bottom:25, left: 15, right: 5}\n * });\n * ```\n *\n * @example\n * ```ts\n * let bbox = [[-79, 43], [-73, 45]];\n * map.fitBounds(bbox, {\n * padding: 20\n * });\n * ```\n * @see [Fit to the bounds of a LineString](https://maplibre.org/maplibre-gl-js/docs/examples/zoomto-linestring/)\n * @see [Fit a map to a bounding box](https://maplibre.org/maplibre-gl-js/docs/examples/fitbounds/)\n */\nexport type PaddingOptions = RequireAtLeastOne<{\n /**\n * Padding in pixels from the top of the map canvas.\n */\n top: number;\n /**\n * Padding in pixels from the bottom of the map canvas.\n */\n bottom: number;\n /**\n * Padding in pixels from the left of the map canvas.\n */\n right: number;\n /**\n * Padding in pixels from the right of the map canvas.\n */\n left: number;\n}>;\n","import {LngLat} from './lng_lat';\nimport {LngLatBounds} from './lng_lat_bounds';\nimport Point from '@mapbox/point-geometry';\nimport {wrap, clamp, degreesToRadians, radiansToDegrees} from '../util/util';\nimport {mat4, mat2} from 'gl-matrix';\nimport {EdgeInsets} from './edge_insets';\nimport type {PaddingOptions} from './edge_insets';\nimport {type IReadonlyTransform, type ITransformGetters} from './transform_interface';\n\nexport const MAX_VALID_LATITUDE = 85.051129;\n\n/**\n * If a path crossing the antimeridian would be shorter, extend the final coordinate so that\n * interpolating between the two endpoints will cross it.\n * @param center - The LngLat object of the desired center. This object will be mutated.\n */\nexport function normalizeCenter(tr: IReadonlyTransform, center: LngLat): void {\n if (!tr.renderWorldCopies || tr.lngRange) return;\n const delta = center.lng - tr.center.lng;\n center.lng +=\n delta > 180 ? -360 :\n delta < -180 ? 360 : 0;\n}\n\n/**\n * Computes scaling from zoom level.\n */\nexport function zoomScale(zoom: number) { return Math.pow(2, zoom); }\n\n/**\n * Computes zoom level from scaling.\n */\nexport function scaleZoom(scale: number) { return Math.log(scale) / Math.LN2; }\n\nexport type UnwrappedTileIDType = {\n /**\n * Tile wrap: 0 for the \"main\" world,\n * negative values for worlds left of the main,\n * positive values for worlds right of the main.\n */\n wrap?: number;\n canonical: {\n /**\n * Tile X coordinate, in range 0..(z^2)-1\n */\n x: number;\n /**\n * Tile Y coordinate, in range 0..(z^2)-1\n */\n y: number;\n /**\n * Tile zoom level.\n */\n z: number;\n };\n};\n\nexport type TransformHelperCallbacks = {\n /**\n * Get center lngLat and zoom to ensure that\n * 1) everything beyond the bounds is excluded\n * 2) a given lngLat is as near the center as possible\n * Bounds are those set by maxBounds or North & South \"Poles\" and, if only 1 globe is displayed, antimeridian.\n */\n getConstrained: (center: LngLat, zoom: number) => { center: LngLat; zoom: number };\n\n /**\n * Updates the underlying transform's internal matrices.\n */\n calcMatrices: () => void;\n};\n\nfunction getTileZoom(zoom: number): number {\n return Math.max(0, Math.floor(zoom));\n}\n\n/**\n * @internal\n * This class stores all values that define a transform's state,\n * such as center, zoom, minZoom, etc.\n * This can be used as a helper for implementing the ITransform interface.\n */\nexport class TransformHelper implements ITransformGetters {\n private _callbacks: TransformHelperCallbacks;\n\n _tileSize: number; // constant\n _tileZoom: number; // integer zoom level for tiles\n _lngRange: [number, number];\n _latRange: [number, number];\n _scale: number; // computed based on zoom\n _width: number;\n _height: number;\n /**\n * Vertical field of view in radians.\n */\n _fovInRadians: number;\n /**\n * This transform's bearing in radians.\n */\n _bearingInRadians: number;\n /**\n * Pitch in radians.\n */\n _pitchInRadians: number;\n /**\n * Roll in radians.\n */\n _rollInRadians: number;\n _zoom: number;\n _renderWorldCopies: boolean;\n _minZoom: number;\n _maxZoom: number;\n _minPitch: number;\n _maxPitch: number;\n _center: LngLat;\n _elevation: number;\n _minElevationForCurrentTile: number;\n _pixelPerMeter: number;\n _edgeInsets: EdgeInsets;\n _unmodified: boolean;\n\n _constraining: boolean;\n _rotationMatrix: mat2;\n _pixelsToGLUnits: [number, number];\n _pixelsToClipSpaceMatrix: mat4;\n _clipSpaceToPixelsMatrix: mat4;\n\n constructor(callbacks: TransformHelperCallbacks, minZoom?: number, maxZoom?: number, minPitch?: number, maxPitch?: number, renderWorldCopies?: boolean) {\n this._callbacks = callbacks;\n this._tileSize = 512; // constant\n\n this._renderWorldCopies = renderWorldCopies === undefined ? true : !!renderWorldCopies;\n this._minZoom = minZoom || 0;\n this._maxZoom = maxZoom || 22;\n\n this._minPitch = (minPitch === undefined || minPitch === null) ? 0 : minPitch;\n this._maxPitch = (maxPitch === undefined || maxPitch === null) ? 60 : maxPitch;\n\n this.setMaxBounds();\n\n this._width = 0;\n this._height = 0;\n this._center = new LngLat(0, 0);\n this._elevation = 0;\n this._zoom = 0;\n this._tileZoom = getTileZoom(this._zoom);\n this._scale = zoomScale(this._zoom);\n this._bearingInRadians = 0;\n this._fovInRadians = 0.6435011087932844;\n this._pitchInRadians = 0;\n this._rollInRadians = 0;\n this._unmodified = true;\n this._edgeInsets = new EdgeInsets();\n this._minElevationForCurrentTile = 0;\n }\n\n public apply(thatI: ITransformGetters, constrain?: boolean): void {\n this._latRange = thatI.latRange;\n this._lngRange = thatI.lngRange;\n this._width = thatI.width;\n this._height = thatI.height;\n this._center = thatI.center;\n this._elevation = thatI.elevation;\n this._minElevationForCurrentTile = thatI.minElevationForCurrentTile;\n this._zoom = thatI.zoom;\n this._tileZoom = getTileZoom(this._zoom);\n this._scale = zoomScale(this._zoom);\n this._bearingInRadians = thatI.bearingInRadians;\n this._fovInRadians = thatI.fovInRadians;\n this._pitchInRadians = thatI.pitchInRadians;\n this._rollInRadians = thatI.rollInRadians;\n this._unmodified = thatI.unmodified;\n this._edgeInsets = new EdgeInsets(thatI.padding.top, thatI.padding.bottom, thatI.padding.left, thatI.padding.right);\n this._minZoom = thatI.minZoom;\n this._maxZoom = thatI.maxZoom;\n this._minPitch = thatI.minPitch;\n this._maxPitch = thatI.maxPitch;\n this._renderWorldCopies = thatI.renderWorldCopies;\n if (constrain) {\n this._constrain();\n }\n this._calcMatrices();\n }\n\n get pixelsToClipSpaceMatrix(): mat4 { return this._pixelsToClipSpaceMatrix; }\n get clipSpaceToPixelsMatrix(): mat4 { return this._clipSpaceToPixelsMatrix; }\n\n get minElevationForCurrentTile(): number { return this._minElevationForCurrentTile; }\n setMinElevationForCurrentTile(ele: number) {\n this._minElevationForCurrentTile = ele;\n }\n\n get tileSize(): number { return this._tileSize; }\n get tileZoom(): number { return this._tileZoom; }\n get scale(): number { return this._scale; }\n\n /**\n * Gets the transform's width in pixels. Use {@link resize} to set the transform's size.\n */\n get width(): number { return this._width; }\n\n /**\n * Gets the transform's height in pixels. Use {@link resize} to set the transform's size.\n */\n get height(): number { return this._height; }\n\n /**\n * Gets the transform's bearing in radians.\n */\n get bearingInRadians(): number { return this._bearingInRadians; }\n\n get lngRange(): [number, number] { return this._lngRange; }\n get latRange(): [number, number] { return this._latRange; }\n\n get pixelsToGLUnits(): [number, number] { return this._pixelsToGLUnits; }\n\n get minZoom(): number { return this._minZoom; }\n setMinZoom(zoom: number) {\n if (this._minZoom === zoom) return;\n this._minZoom = zoom;\n this.setZoom(this.getConstrained(this._center, this.zoom).zoom);\n }\n\n get maxZoom(): number { return this._maxZoom; }\n setMaxZoom(zoom: number) {\n if (this._maxZoom === zoom) return;\n this._maxZoom = zoom;\n this.setZoom(this.getConstrained(this._center, this.zoom).zoom);\n }\n\n get minPitch(): number { return this._minPitch; }\n setMinPitch(pitch: number) {\n if (this._minPitch === pitch) return;\n this._minPitch = pitch;\n this.setPitch(Math.max(this.pitch, pitch));\n }\n\n get maxPitch(): number { return this._maxPitch; }\n setMaxPitch(pitch: number) {\n if (this._maxPitch === pitch) return;\n this._maxPitch = pitch;\n this.setPitch(Math.min(this.pitch, pitch));\n }\n\n get renderWorldCopies(): boolean { return this._renderWorldCopies; }\n setRenderWorldCopies(renderWorldCopies: boolean) {\n if (renderWorldCopies === undefined) {\n renderWorldCopies = true;\n } else if (renderWorldCopies === null) {\n renderWorldCopies = false;\n }\n\n this._renderWorldCopies = renderWorldCopies;\n }\n\n get worldSize(): number {\n return this._tileSize * this._scale;\n }\n\n get centerOffset(): Point {\n return this.centerPoint._sub(this.size._div(2));\n }\n\n /**\n * Gets the transform's dimensions packed into a Point object.\n */\n get size(): Point {\n return new Point(this._width, this._height);\n }\n\n get bearing(): number {\n return this._bearingInRadians / Math.PI * 180;\n }\n setBearing(bearing: number) {\n const b = wrap(bearing, -180, 180) * Math.PI / 180;\n if (this._bearingInRadians === b) return;\n this._unmodified = false;\n this._bearingInRadians = b;\n this._calcMatrices();\n\n // 2x2 matrix for rotating points\n this._rotationMatrix = mat2.create();\n mat2.rotate(this._rotationMatrix, this._rotationMatrix, -this._bearingInRadians);\n }\n\n get rotationMatrix(): mat2 { return this._rotationMatrix; }\n\n get pitchInRadians(): number {\n return this._pitchInRadians;\n }\n get pitch(): number {\n return this._pitchInRadians / Math.PI * 180;\n }\n setPitch(pitch: number) {\n const p = clamp(pitch, this.minPitch, this.maxPitch) / 180 * Math.PI;\n if (this._pitchInRadians === p) return;\n this._unmodified = false;\n this._pitchInRadians = p;\n this._calcMatrices();\n }\n\n get rollInRadians(): number {\n return this._rollInRadians;\n }\n get roll(): number {\n return this._rollInRadians / Math.PI * 180;\n }\n setRoll(roll: number) {\n const r = roll / 180 * Math.PI;\n if (this._rollInRadians === r) return;\n this._unmodified = false;\n this._rollInRadians = r;\n this._calcMatrices();\n }\n\n get fovInRadians(): number {\n return this._fovInRadians;\n }\n get fov(): number {\n return radiansToDegrees(this._fovInRadians);\n }\n setFov(fov: number) {\n fov = clamp(fov, 0.1, 150);\n if (this.fov === fov) return;\n this._unmodified = false;\n this._fovInRadians = degreesToRadians(fov);\n this._calcMatrices();\n }\n\n get zoom(): number { return this._zoom; }\n setZoom(zoom: number) {\n const constrainedZoom = this.getConstrained(this._center, zoom).zoom;\n if (this._zoom === constrainedZoom) return;\n this._unmodified = false;\n this._zoom = constrainedZoom;\n this._tileZoom = Math.max(0, Math.floor(constrainedZoom));\n this._scale = zoomScale(constrainedZoom);\n this._constrain();\n this._calcMatrices();\n }\n\n get center(): LngLat { return this._center; }\n setCenter(center: LngLat) {\n if (center.lat === this._center.lat && center.lng === this._center.lng) return;\n this._unmodified = false;\n this._center = center;\n this._constrain();\n this._calcMatrices();\n }\n\n /**\n * Elevation at current center point, meters above sea level\n */\n get elevation(): number { return this._elevation; }\n setElevation(elevation: number) {\n if (elevation === this._elevation) return;\n this._elevation = elevation;\n this._constrain();\n this._calcMatrices();\n }\n\n get padding(): PaddingOptions { return this._edgeInsets.toJSON(); }\n setPadding(padding: PaddingOptions) {\n if (this._edgeInsets.equals(padding)) return;\n this._unmodified = false;\n // Update edge-insets in-place\n this._edgeInsets.interpolate(this._edgeInsets, padding, 1);\n this._calcMatrices();\n }\n\n /**\n * The center of the screen in pixels with the top-left corner being (0,0)\n * and +y axis pointing downwards. This accounts for padding.\n */\n get centerPoint(): Point {\n return this._edgeInsets.getCenter(this._width, this._height);\n }\n\n /**\n * @internal\n */\n get pixelsPerMeter(): number { return this._pixelPerMeter; }\n\n get unmodified(): boolean { return this._unmodified; }\n\n /**\n * Returns if the padding params match\n *\n * @param padding - the padding to check against\n * @returns true if they are equal, false otherwise\n */\n isPaddingEqual(padding: PaddingOptions): boolean {\n return this._edgeInsets.equals(padding);\n }\n\n /**\n * Helper method to update edge-insets in place\n *\n * @param start - the starting padding\n * @param target - the target padding\n * @param t - the step/weight\n */\n interpolatePadding(start: PaddingOptions, target: PaddingOptions, t: number): void {\n this._unmodified = false;\n this._edgeInsets.interpolate(start, target, t);\n this._constrain();\n this._calcMatrices();\n }\n\n resize(width: number, height: number) {\n this._width = width;\n this._height = height;\n this._constrain();\n this._calcMatrices();\n }\n\n /**\n * Returns the maximum geographical bounds the map is constrained to, or `null` if none set.\n * @returns max bounds\n */\n getMaxBounds(): LngLatBounds | null {\n if (!this._latRange || this._latRange.length !== 2 ||\n !this._lngRange || this._lngRange.length !== 2) return null;\n\n return new LngLatBounds([this._lngRange[0], this._latRange[0]], [this._lngRange[1], this._latRange[1]]);\n }\n\n /**\n * Sets or clears the map's geographical constraints.\n * @param bounds - A {@link LngLatBounds} object describing the new geographic boundaries of the map.\n */\n setMaxBounds(bounds?: LngLatBounds | null): void {\n if (bounds) {\n this._lngRange = [bounds.getWest(), bounds.getEast()];\n this._latRange = [bounds.getSouth(), bounds.getNorth()];\n this._constrain();\n } else {\n this._lngRange = null;\n this._latRange = [-MAX_VALID_LATITUDE, MAX_VALID_LATITUDE];\n }\n }\n\n private getConstrained(lngLat: LngLat, zoom: number): {center: LngLat; zoom: number} {\n return this._callbacks.getConstrained(lngLat, zoom);\n }\n\n /**\n * When the map is pitched, some of the 3D features that intersect a query will not intersect\n * the query at the surface of the earth. Instead the feature may be closer and only intersect\n * the query because it extrudes into the air.\n * @param queryGeometry - For point queries, the line from the query point to the \"camera point\",\n * for other geometries, the envelope of the query geometry and the \"camera point\"\n * @returns a geometry that includes all of the original query as well as all possible ares of the\n * screen where the *base* of a visible extrusion could be.\n *\n */\n getCameraQueryGeometry(cameraPoint: Point, queryGeometry: Array): Array {\n if (queryGeometry.length === 1) {\n return [queryGeometry[0], cameraPoint];\n } else {\n let minX = cameraPoint.x;\n let minY = cameraPoint.y;\n let maxX = cameraPoint.x;\n let maxY = cameraPoint.y;\n for (const p of queryGeometry) {\n minX = Math.min(minX, p.x);\n minY = Math.min(minY, p.y);\n maxX = Math.max(maxX, p.x);\n maxY = Math.max(maxY, p.y);\n }\n return [\n new Point(minX, minY),\n new Point(maxX, minY),\n new Point(maxX, maxY),\n new Point(minX, maxY),\n new Point(minX, minY)\n ];\n }\n }\n\n /**\n * @internal\n * Snaps the transform's center, zoom, etc. into the valid range.\n */\n private _constrain(): void {\n if (!this.center || !this._width || !this._height || this._constraining) return;\n this._constraining = true;\n const unmodified = this._unmodified;\n const {center, zoom} = this.getConstrained(this.center, this.zoom);\n this.setCenter(center);\n this.setZoom(zoom);\n this._unmodified = unmodified;\n this._constraining = false;\n }\n\n /**\n * This function is called every time one of the transform's defining properties (center, pitch, etc.) changes.\n * This function should update the transform's internal data, such as matrices.\n * Any derived `_calcMatrices` function should also call the base function first. The base function only depends on the `_width` and `_height` fields.\n */\n private _calcMatrices(): void {\n if (this._width && this._height) {\n this._pixelsToGLUnits = [2 / this._width, -2 / this._height];\n\n let m = mat4.identity(new Float64Array(16) as any);\n mat4.scale(m, m, [this._width / 2, -this._height / 2, 1]);\n mat4.translate(m, m, [1, -1, 0]);\n this._clipSpaceToPixelsMatrix = m;\n\n m = mat4.identity(new Float64Array(16) as any);\n mat4.scale(m, m, [1, -1, 1]);\n mat4.translate(m, m, [-1, -1, 0]);\n mat4.scale(m, m, [2 / this._width, 2 / this._height, 1]);\n this._pixelsToClipSpaceMatrix = m;\n }\n this._callbacks.calcMatrices();\n }\n}\n","import {OverscaledTileID} from '../../source/tile_id';\nimport {vec2, type vec4} from 'gl-matrix';\nimport {type IReadonlyTransform} from '../transform_interface';\nimport {MercatorCoordinate} from '../mercator_coordinate';\nimport {scaleZoom} from '../transform_helper';\nimport {clamp, degreesToRadians} from '../../util/util';\nimport {type Terrain} from '../../render/terrain';\nimport {type Frustum} from '../../util/primitives/frustum';\nimport {type Aabb, IntersectionResult} from '../../util/primitives/aabb';\n\ntype CoveringTilesResult = {\n tileID: OverscaledTileID;\n distanceSq: number;\n tileDistanceToCamera: number;\n};\n\ntype CoveringTilesStackEntry = {\n zoom: number;\n x: number;\n y: number;\n wrap: number;\n fullyVisible: boolean;\n};\n\nexport type CoveringZoomOptions = {\n /**\n * Whether to round or floor the target zoom level. If true, the value will be rounded to the closest integer. Otherwise the value will be floored.\n */\n roundZoom?: boolean;\n /**\n * Tile size, expressed in screen pixels.\n */\n tileSize: number;\n};\n\nexport type CoveringTilesOptions = CoveringZoomOptions & {\n /**\n * Smallest allowed tile zoom.\n */\n minzoom?: number;\n /**\n * Largest allowed tile zoom.\n */\n maxzoom?: number;\n /**\n * `true` if tiles should be sent back to the worker for each overzoomed zoom level, `false` if not.\n * Fill this option when computing covering tiles for a source.\n * When true, any tile at `maxzoom` level that should be overscaled to a greater zoom will have\n * its zoom set to the overscaled greater zoom. When false, such tiles will have zoom set to `maxzoom`.\n */\n reparseOverscaled?: boolean;\n /**\n * When terrain is present, tile visibility will be computed in regards to the min and max elevations for each tile.\n */\n terrain?: Terrain;\n /**\n * Optional function to redefine how tiles are loaded at high pitch angles.\n */\n calculateTileZoom?: CalculateTileZoomFunction;\n};\n\n/**\n * Function to define how tiles are loaded at high pitch angles\n * @param requestedCenterZoom - the requested zoom level, valid at the center point.\n * @param distanceToTile2D - 2D distance from the camera to the candidate tile, in mercator units.\n * @param distanceToTileZ - vertical distance from the camera to the candidate tile, in mercator units.\n * @param distanceToCenter3D - distance from camera to center point, in mercator units\n * @param cameraVerticalFOV - camera vertical field of view, in degrees\n * @return the desired zoom level for this tile. May not be an integer.\n */\nexport type CalculateTileZoomFunction = (requestedCenterZoom: number,\n distanceToTile2D: number,\n distanceToTileZ: number,\n distanceToCenter3D: number,\n cameraVerticalFOV: number) => number;\n\n/**\n * A simple/heuristic function that returns whether the tile is visible under the current transform.\n * @returns an {@link IntersectionResult}.\n */\nexport function isTileVisible(frustum: Frustum, aabb: Aabb, plane?: vec4): IntersectionResult {\n\n const frustumTest = aabb.intersectsFrustum(frustum);\n if (!plane) {\n return frustumTest;\n }\n const planeTest = aabb.intersectsPlane(plane);\n\n if (frustumTest === IntersectionResult.None || planeTest === IntersectionResult.None) {\n return IntersectionResult.None;\n }\n\n if (frustumTest === IntersectionResult.Full && planeTest === IntersectionResult.Full) {\n return IntersectionResult.Full;\n }\n\n return IntersectionResult.Partial;\n}\n\nfunction calculateTileZoom(requestedCenterZoom: number,\n distanceToTile2D: number,\n distanceToTileZ: number,\n distanceToCenter3D: number,\n cameraVerticalFOV: number) : number {\n /**\n * Controls how tiles are loaded at high pitch angles. Higher numbers cause fewer, lower resolution\n * tiles to be loaded. At 0, tiles are loaded with approximately constant screen X resolution.\n * At 1, tiles are loaded with approximately constant screen area.\n * At 2, tiles are loaded with approximately constant screen Y resolution.\n */\n const pitchTileLoadingBehavior = 1.0;\n /**\n * Controls how tiles are loaded at high pitch angles. Controls how different the distance to a tile must be (compared with the center point)\n * before a new zoom level is requested. For example, if tileZoomDeadband = 1 and the center zoom is 14, tiles distant enough to be loaded at\n * z13 will be loaded at z14, and tiles distant enough to be loaded at z14 will be loaded at z15. A higher number causes more tiles to be loaded\n * at the center zoom level. This also results in more tiles being loaded overall.\n */\n const tileZoomDeadband = 0.0;\n let thisTileDesiredZ = requestedCenterZoom;\n const thisTilePitch = Math.atan(distanceToTile2D / distanceToTileZ);\n const distanceToTile3D = Math.hypot(distanceToTile2D, distanceToTileZ);\n // if distance to candidate tile is a tiny bit farther than distance to center,\n // use the same zoom as the center. This is achieved by the scaling distance ratio by cos(fov/2)\n thisTileDesiredZ = requestedCenterZoom + scaleZoom(distanceToCenter3D / distanceToTile3D / Math.max(0.5, Math.cos(degreesToRadians(cameraVerticalFOV / 2))));\n thisTileDesiredZ += pitchTileLoadingBehavior * scaleZoom(Math.cos(thisTilePitch)) / 2;\n thisTileDesiredZ = thisTileDesiredZ + clamp(requestedCenterZoom - thisTileDesiredZ, -tileZoomDeadband, tileZoomDeadband);\n return thisTileDesiredZ;\n}\n\n/**\n * Return what zoom level of a tile source would most closely cover the tiles displayed by this transform.\n * @param options - The options, most importantly the source's tile size.\n * @returns An integer zoom level at which all tiles will be visible.\n */\nexport function coveringZoomLevel(transform: IReadonlyTransform, options: CoveringZoomOptions): number {\n const z = (options.roundZoom ? Math.round : Math.floor)(\n transform.zoom + scaleZoom(transform.tileSize / options.tileSize)\n );\n // At negative zoom levels load tiles from z0 because negative tile zoom levels don't exist.\n return Math.max(0, z);\n}\n\n/**\n * Returns a list of tiles that optimally covers the screen. Adapted for globe projection.\n * Correctly handles LOD when moving over the antimeridian.\n * @param transform - The transform instance.\n * @param frustum - The covering frustum.\n * @param plane - The clipping plane used by globe transform, or null.\n * @param cameraCoord - The x, y, z position of the camera in MercatorCoordinates.\n * @param centerCoord - The x, y, z position of the center point in MercatorCoordinates.\n * @param options - Additional coveringTiles options.\n * @param details - Interface to define required helper functions.\n * @returns A list of tile coordinates, ordered by ascending distance from camera.\n */\nexport function coveringTiles(transform: IReadonlyTransform, options: CoveringTilesOptions): OverscaledTileID[] {\n const frustum = transform.getCameraFrustum();\n const plane = transform.getClippingPlane();\n const cameraCoord = transform.screenPointToMercatorCoordinate(transform.getCameraPoint());\n const centerCoord = MercatorCoordinate.fromLngLat(transform.center, transform.elevation);\n cameraCoord.z = centerCoord.z + Math.cos(transform.pitchInRadians) * transform.cameraToCenterDistance / transform.worldSize;\n const detailsProvider = transform.getCoveringTilesDetailsProvider();\n const allowVariableZoom = detailsProvider.allowVariableZoom(transform, options);\n \n const desiredZ = coveringZoomLevel(transform, options);\n const minZoom = options.minzoom || 0;\n const maxZoom = options.maxzoom !== undefined ? options.maxzoom : transform.maxZoom;\n const nominalZ = Math.min(Math.max(0, desiredZ), maxZoom);\n\n const numTiles = Math.pow(2, nominalZ);\n const cameraPoint = [numTiles * cameraCoord.x, numTiles * cameraCoord.y, 0];\n const centerPoint = [numTiles * centerCoord.x, numTiles * centerCoord.y, 0];\n const distanceToCenter2d = Math.hypot(centerCoord.x - cameraCoord.x, centerCoord.y - cameraCoord.y);\n const distanceZ = Math.abs(centerCoord.z - cameraCoord.z);\n const distanceToCenter3d = Math.hypot(distanceToCenter2d, distanceZ);\n\n const newRootTile = (wrap: number): CoveringTilesStackEntry => {\n return {\n zoom: 0,\n x: 0,\n y: 0,\n wrap,\n fullyVisible: false\n };\n };\n\n // Do a depth-first traversal to find visible tiles and proper levels of detail\n const stack: Array = [];\n const result: Array = [];\n\n if (transform.renderWorldCopies && detailsProvider.allowWorldCopies()) {\n // Render copy of the globe thrice on both sides\n for (let i = 1; i <= 3; i++) {\n stack.push(newRootTile(-i));\n stack.push(newRootTile(i));\n }\n }\n\n stack.push(newRootTile(0));\n\n while (stack.length > 0) {\n const it = stack.pop();\n const x = it.x;\n const y = it.y;\n let fullyVisible = it.fullyVisible;\n const tileID = {x, y, z: it.zoom};\n const aabb = detailsProvider.getTileAABB(tileID, it.wrap, transform.elevation, options);\n\n // Visibility of a tile is not required if any of its ancestor is fully visible\n if (!fullyVisible) {\n const intersectResult = isTileVisible(frustum, aabb, plane);\n\n if (intersectResult === IntersectionResult.None)\n continue;\n\n fullyVisible = intersectResult === IntersectionResult.Full;\n }\n\n const distToTile2d = detailsProvider.distanceToTile2d(cameraCoord.x, cameraCoord.y, tileID, aabb);\n\n let thisTileDesiredZ = desiredZ;\n if (allowVariableZoom) {\n const tileZoomFunc = options.calculateTileZoom || calculateTileZoom;\n thisTileDesiredZ = tileZoomFunc(transform.zoom + scaleZoom(transform.tileSize / options.tileSize),\n distToTile2d,\n distanceZ,\n distanceToCenter3d,\n transform.fov);\n }\n thisTileDesiredZ = (options.roundZoom ? Math.round : Math.floor)(thisTileDesiredZ);\n thisTileDesiredZ = Math.max(0, thisTileDesiredZ);\n const z = Math.min(thisTileDesiredZ, maxZoom);\n\n // We need to compute a valid wrap value for the tile to keep globe compatibility with mercator\n it.wrap = detailsProvider.getWrap(centerCoord, tileID, it.wrap);\n\n // Have we reached the target depth?\n if (it.zoom >= z) {\n if (it.zoom < minZoom) {\n continue;\n }\n const dz = nominalZ - it.zoom;\n const dx = cameraPoint[0] - 0.5 - (x << dz);\n const dy = cameraPoint[1] - 0.5 - (y << dz);\n const overscaledZ = options.reparseOverscaled ? Math.max(it.zoom, thisTileDesiredZ) : it.zoom;\n result.push({\n tileID: new OverscaledTileID(it.zoom === maxZoom ? overscaledZ : it.zoom, it.wrap, it.zoom, x, y),\n distanceSq: vec2.sqrLen([centerPoint[0] - 0.5 - x, centerPoint[1] - 0.5 - y]),\n // this variable is currently not used, but may be important to reduce the amount of loaded tiles\n tileDistanceToCamera: Math.sqrt(dx * dx + dy * dy)\n });\n continue;\n }\n\n for (let i = 0; i < 4; i++) {\n const childX = (x << 1) + (i % 2);\n const childY = (y << 1) + (i >> 1);\n const childZ = it.zoom + 1;\n stack.push({zoom: childZ, x: childX, y: childY, wrap: it.wrap, fullyVisible});\n }\n }\n\n return result.sort((a, b) => a.distanceSq - b.distanceSq).map(a => a.tileID);\n}\n","import {create as createSource} from './source';\n\nimport {Tile} from './tile';\nimport {Event, ErrorEvent, Evented} from '../util/evented';\nimport {TileCache} from './tile_cache';\nimport {MercatorCoordinate} from '../geo/mercator_coordinate';\nimport {keysDifference} from '../util/util';\nimport {EXTENT} from '../data/extent';\nimport {type Context} from '../gl/context';\nimport Point from '@mapbox/point-geometry';\nimport {browser} from '../util/browser';\nimport {OverscaledTileID} from './tile_id';\nimport {SourceFeatureState} from './source_state';\nimport {config} from '../util/config';\n\nimport type {Source} from './source';\nimport type {Map} from '../ui/map';\nimport type {Style} from '../style/style';\nimport type {Dispatcher} from '../util/dispatcher';\nimport type {IReadonlyTransform, ITransform} from '../geo/transform_interface';\nimport type {TileState} from './tile';\nimport type {SourceSpecification} from '@maplibre/maplibre-gl-style-spec';\nimport type {MapSourceDataEvent} from '../ui/events';\nimport type {Terrain} from '../render/terrain';\nimport type {CanvasSourceSpecification} from './canvas_source';\nimport {coveringTiles, coveringZoomLevel} from '../geo/projection/covering_tiles';\n\ntype TileResult = {\n tile: Tile;\n tileID: OverscaledTileID;\n queryGeometry: Array;\n cameraQueryGeometry: Array;\n scale: number;\n}\n\n/**\n * @internal\n * `SourceCache` is responsible for\n *\n * - creating an instance of `Source`\n * - forwarding events from `Source`\n * - caching tiles loaded from an instance of `Source`\n * - loading the tiles needed to render a given viewport\n * - unloading the cached tiles not needed to render a given viewport\n */\nexport class SourceCache extends Evented {\n id: string;\n dispatcher: Dispatcher;\n map: Map;\n style: Style;\n\n _source: Source;\n\n /**\n * @internal\n * signifies that the TileJSON is loaded if applicable.\n * if the source type does not come with a TileJSON, the flag signifies the\n * source data has loaded (i.e geojson has been tiled on the worker and is ready)\n */\n _sourceLoaded: boolean;\n\n _sourceErrored: boolean;\n _tiles: {[_: string]: Tile};\n _prevLng: number;\n _cache: TileCache;\n _timers: {\n [_ in any]: ReturnType;\n };\n _cacheTimers: {\n [_ in any]: ReturnType;\n };\n _maxTileCacheSize: number;\n _maxTileCacheZoomLevels: number;\n _paused: boolean;\n _shouldReloadOnResume: boolean;\n _coveredTiles: {[_: string]: boolean};\n transform: ITransform;\n terrain: Terrain;\n used: boolean;\n usedForTerrain: boolean;\n tileSize: number;\n _state: SourceFeatureState;\n _loadedParentTiles: {[_: string]: Tile};\n _loadedSiblingTiles: {[_: string]: Tile};\n _didEmitContent: boolean;\n _updated: boolean;\n\n static maxUnderzooming: number;\n static maxOverzooming: number;\n\n constructor(id: string, options: SourceSpecification | CanvasSourceSpecification, dispatcher: Dispatcher) {\n super();\n this.id = id;\n this.dispatcher = dispatcher;\n\n this.on('data', (e: MapSourceDataEvent) => this._dataHandler(e));\n\n this.on('dataloading', () => {\n this._sourceErrored = false;\n });\n\n this.on('error', () => {\n // Only set _sourceErrored if the source does not have pending loads.\n this._sourceErrored = this._source.loaded();\n });\n\n this._source = createSource(id, options, dispatcher, this);\n\n this._tiles = {};\n this._cache = new TileCache(0, (tile) => this._unloadTile(tile));\n this._timers = {};\n this._cacheTimers = {};\n this._maxTileCacheSize = null;\n this._maxTileCacheZoomLevels = null;\n this._loadedParentTiles = {};\n\n this._coveredTiles = {};\n this._state = new SourceFeatureState();\n this._didEmitContent = false;\n this._updated = false;\n }\n\n onAdd(map: Map) {\n this.map = map;\n this._maxTileCacheSize = map ? map._maxTileCacheSize : null;\n this._maxTileCacheZoomLevels = map ? map._maxTileCacheZoomLevels : null;\n if (this._source && this._source.onAdd) {\n this._source.onAdd(map);\n }\n }\n\n onRemove(map: Map) {\n this.clearTiles();\n if (this._source && this._source.onRemove) {\n this._source.onRemove(map);\n }\n }\n\n /**\n * Return true if no tile data is pending, tiles will not change unless\n * an additional API call is received.\n */\n loaded(): boolean {\n if (this._sourceErrored) { return true; }\n if (!this._sourceLoaded) { return false; }\n if (!this._source.loaded()) { return false; }\n if ((this.used !== undefined || this.usedForTerrain !== undefined) && !this.used && !this.usedForTerrain) { return true; }\n // do not consider as loaded if the update hasn't been called yet (we do not know if we will have any tiles to fetch)\n if (!this._updated) { return false; }\n\n for (const t in this._tiles) {\n const tile = this._tiles[t];\n if (tile.state !== 'loaded' && tile.state !== 'errored')\n return false;\n }\n return true;\n }\n\n getSource(): Source {\n return this._source;\n }\n\n pause() {\n this._paused = true;\n }\n\n resume() {\n if (!this._paused) return;\n const shouldReload = this._shouldReloadOnResume;\n this._paused = false;\n this._shouldReloadOnResume = false;\n if (shouldReload) this.reload();\n if (this.transform) this.update(this.transform, this.terrain);\n }\n\n async _loadTile(tile: Tile, id: string, state: TileState): Promise {\n try {\n await this._source.loadTile(tile);\n this._tileLoaded(tile, id, state);\n } catch (err) {\n tile.state = 'errored';\n if ((err as any).status !== 404) {\n this._source.fire(new ErrorEvent(err, {tile}));\n } else {\n // continue to try loading parent/children tiles if a tile doesn't exist (404)\n this.update(this.transform, this.terrain);\n }\n }\n }\n\n _unloadTile(tile: Tile) {\n if (this._source.unloadTile)\n this._source.unloadTile(tile);\n }\n\n _abortTile(tile: Tile) {\n if (this._source.abortTile)\n this._source.abortTile(tile);\n\n this._source.fire(new Event('dataabort', {tile, coord: tile.tileID, dataType: 'source'}));\n }\n\n serialize() {\n return this._source.serialize();\n }\n\n prepare(context: Context) {\n if (this._source.prepare) {\n this._source.prepare();\n }\n\n this._state.coalesceChanges(this._tiles, this.map ? this.map.painter : null);\n for (const i in this._tiles) {\n const tile = this._tiles[i];\n tile.upload(context);\n tile.prepare(this.map.style.imageManager);\n }\n }\n\n /**\n * Return all tile ids ordered with z-order, and cast to numbers\n */\n getIds(): Array {\n return (Object.values(this._tiles) as any).map((tile: Tile) => tile.tileID).sort(compareTileId).map(id => id.key);\n }\n\n getRenderableIds(symbolLayer?: boolean): Array {\n const renderables: Array = [];\n for (const id in this._tiles) {\n if (this._isIdRenderable(id, symbolLayer)) renderables.push(this._tiles[id]);\n }\n if (symbolLayer) {\n return renderables.sort((a_: Tile, b_: Tile) => {\n const a = a_.tileID;\n const b = b_.tileID;\n const rotatedA = (new Point(a.canonical.x, a.canonical.y))._rotate(-this.transform.bearingInRadians);\n const rotatedB = (new Point(b.canonical.x, b.canonical.y))._rotate(-this.transform.bearingInRadians);\n return a.overscaledZ - b.overscaledZ || rotatedB.y - rotatedA.y || rotatedB.x - rotatedA.x;\n }).map(tile => tile.tileID.key);\n }\n return renderables.map(tile => tile.tileID).sort(compareTileId).map(id => id.key);\n }\n\n hasRenderableParent(tileID: OverscaledTileID) {\n const parentTile = this.findLoadedParent(tileID, 0);\n if (parentTile) {\n return this._isIdRenderable(parentTile.tileID.key);\n }\n return false;\n }\n\n _isIdRenderable(id: string, symbolLayer?: boolean) {\n return this._tiles[id] && this._tiles[id].hasData() &&\n !this._coveredTiles[id] && (symbolLayer || !this._tiles[id].holdingForFade());\n }\n\n reload(sourceDataChanged?: boolean) {\n if (this._paused) {\n this._shouldReloadOnResume = true;\n return;\n }\n\n this._cache.reset();\n\n for (const i in this._tiles) {\n if (sourceDataChanged || this._tiles[i].state !== 'errored') {\n this._reloadTile(i, 'reloading');\n }\n }\n }\n\n async _reloadTile(id: string, state: TileState) {\n const tile = this._tiles[id];\n\n // this potentially does not address all underlying\n // issues https://github.com/mapbox/mapbox-gl-js/issues/4252\n // - hard to tell without repro steps\n if (!tile) return;\n\n // The difference between \"loading\" tiles and \"reloading\" or \"expired\"\n // tiles is that \"reloading\"/\"expired\" tiles are \"renderable\".\n // Therefore, a \"loading\" tile cannot become a \"reloading\" tile without\n // first becoming a \"loaded\" tile.\n if (tile.state !== 'loading') {\n tile.state = state;\n }\n await this._loadTile(tile, id, state);\n }\n\n _tileLoaded(tile: Tile, id: string, previousState: TileState) {\n tile.timeAdded = browser.now();\n if (previousState === 'expired') tile.refreshedUponExpiration = true;\n this._setTileReloadTimer(id, tile);\n if (this.getSource().type === 'raster-dem' && tile.dem) this._backfillDEM(tile);\n this._state.initializeTileState(tile, this.map ? this.map.painter : null);\n\n if (!tile.aborted) {\n this._source.fire(new Event('data', {dataType: 'source', tile, coord: tile.tileID}));\n }\n }\n\n /**\n * For raster terrain source, backfill DEM to eliminate visible tile boundaries\n */\n _backfillDEM(tile: Tile) {\n const renderables = this.getRenderableIds();\n for (let i = 0; i < renderables.length; i++) {\n const borderId = renderables[i];\n if (tile.neighboringTiles && tile.neighboringTiles[borderId]) {\n const borderTile = this.getTileByID(borderId);\n fillBorder(tile, borderTile);\n fillBorder(borderTile, tile);\n }\n }\n\n function fillBorder(tile, borderTile) {\n tile.needsHillshadePrepare = true;\n tile.needsTerrainPrepare = true;\n let dx = borderTile.tileID.canonical.x - tile.tileID.canonical.x;\n const dy = borderTile.tileID.canonical.y - tile.tileID.canonical.y;\n const dim = Math.pow(2, tile.tileID.canonical.z);\n const borderId = borderTile.tileID.key;\n if (dx === 0 && dy === 0) return;\n\n if (Math.abs(dy) > 1) {\n return;\n }\n if (Math.abs(dx) > 1) {\n // Adjust the delta coordinate for world wraparound.\n if (Math.abs(dx + dim) === 1) {\n dx += dim;\n } else if (Math.abs(dx - dim) === 1) {\n dx -= dim;\n }\n }\n if (!borderTile.dem || !tile.dem) return;\n tile.dem.backfillBorder(borderTile.dem, dx, dy);\n if (tile.neighboringTiles && tile.neighboringTiles[borderId])\n tile.neighboringTiles[borderId].backfilled = true;\n }\n }\n /**\n * Get a specific tile by TileID\n */\n getTile(tileID: OverscaledTileID): Tile {\n return this.getTileByID(tileID.key);\n }\n\n /**\n * Get a specific tile by id\n */\n getTileByID(id: string): Tile {\n return this._tiles[id];\n }\n\n /**\n * For a given set of tiles, retain children that are loaded and have a zoom\n * between `zoom` (exclusive) and `maxCoveringZoom` (inclusive)\n */\n _retainLoadedChildren(\n idealTiles: {\n [_ in any]: OverscaledTileID;\n },\n zoom: number,\n maxCoveringZoom: number,\n retain: {\n [_ in any]: OverscaledTileID;\n }\n ) {\n for (const id in this._tiles) {\n let tile = this._tiles[id];\n\n // only consider renderable tiles up to maxCoveringZoom\n if (retain[id] ||\n !tile.hasData() ||\n tile.tileID.overscaledZ <= zoom ||\n tile.tileID.overscaledZ > maxCoveringZoom\n ) continue;\n\n // loop through parents and retain the topmost loaded one if found\n let topmostLoadedID = tile.tileID;\n while (tile && tile.tileID.overscaledZ > zoom + 1) {\n const parentID = tile.tileID.scaledTo(tile.tileID.overscaledZ - 1);\n\n tile = this._tiles[parentID.key];\n\n if (tile && tile.hasData()) {\n topmostLoadedID = parentID;\n }\n }\n\n // loop through ancestors of the topmost loaded child to see if there's one that needed it\n let tileID = topmostLoadedID;\n while (tileID.overscaledZ > zoom) {\n tileID = tileID.scaledTo(tileID.overscaledZ - 1);\n\n if (idealTiles[tileID.key]) {\n // found a parent that needed a loaded child; retain that child\n retain[topmostLoadedID.key] = topmostLoadedID;\n break;\n }\n }\n }\n }\n\n /**\n * Find a loaded parent of the given tile (up to minCoveringZoom)\n */\n findLoadedParent(tileID: OverscaledTileID, minCoveringZoom: number): Tile {\n if (tileID.key in this._loadedParentTiles) {\n const parent = this._loadedParentTiles[tileID.key];\n if (parent && parent.tileID.overscaledZ >= minCoveringZoom) {\n return parent;\n } else {\n return null;\n }\n }\n for (let z = tileID.overscaledZ - 1; z >= minCoveringZoom; z--) {\n const parentTileID = tileID.scaledTo(z);\n const tile = this._getLoadedTile(parentTileID);\n if (tile) {\n return tile;\n }\n }\n }\n\n /**\n * Find a loaded sibling of the given tile\n */\n findLoadedSibling(tileID: OverscaledTileID): Tile {\n // If a tile with this ID already exists, return it\n return this._getLoadedTile(tileID);\n }\n\n _getLoadedTile(tileID: OverscaledTileID): Tile {\n const tile = this._tiles[tileID.key];\n if (tile && tile.hasData()) {\n return tile;\n }\n // TileCache ignores wrap in lookup.\n const cachedTile = this._cache.getByKey(tileID.wrapped().key);\n return cachedTile;\n }\n\n /**\n * Resizes the tile cache based on the current viewport's size\n * or the maxTileCacheSize option passed during map creation\n *\n * Larger viewports use more tiles and need larger caches. Larger viewports\n * are more likely to be found on devices with more memory and on pages where\n * the map is more important.\n */\n updateCacheSize(transform: IReadonlyTransform) {\n const widthInTiles = Math.ceil(transform.width / this._source.tileSize) + 1;\n const heightInTiles = Math.ceil(transform.height / this._source.tileSize) + 1;\n const approxTilesInView = widthInTiles * heightInTiles;\n const commonZoomRange = this._maxTileCacheZoomLevels === null ?\n config.MAX_TILE_CACHE_ZOOM_LEVELS : this._maxTileCacheZoomLevels;\n const viewDependentMaxSize = Math.floor(approxTilesInView * commonZoomRange);\n const maxSize = typeof this._maxTileCacheSize === 'number' ?\n Math.min(this._maxTileCacheSize, viewDependentMaxSize) : viewDependentMaxSize;\n\n this._cache.setMaxSize(maxSize);\n }\n\n handleWrapJump(lng: number) {\n // On top of the regular z/x/y values, TileIDs have a `wrap` value that specify\n // which copy of the world the tile belongs to. For example, at `lng: 10` you\n // might render z/x/y/0 while at `lng: 370` you would render z/x/y/1.\n //\n // When lng values get wrapped (going from `lng: 370` to `long: 10`) you expect\n // to see the same thing on the screen (370 degrees and 10 degrees is the same\n // place in the world) but all the TileIDs will have different wrap values.\n //\n // In order to make this transition seamless, we calculate the rounded difference of\n // \"worlds\" between the last frame and the current frame. If the map panned by\n // a world, then we can assign all the tiles new TileIDs with updated wrap values.\n // For example, assign z/x/y/1 a new id: z/x/y/0. It is the same tile, just rendered\n // in a different position.\n //\n // This enables us to reuse the tiles at more ideal locations and prevent flickering.\n const prevLng = this._prevLng === undefined ? lng : this._prevLng;\n const lngDifference = lng - prevLng;\n const worldDifference = lngDifference / 360;\n const wrapDelta = Math.round(worldDifference);\n this._prevLng = lng;\n\n if (wrapDelta) {\n const tiles: {[_: string]: Tile} = {};\n for (const key in this._tiles) {\n const tile = this._tiles[key];\n tile.tileID = tile.tileID.unwrapTo(tile.tileID.wrap + wrapDelta);\n tiles[tile.tileID.key] = tile;\n }\n this._tiles = tiles;\n\n // Reset tile reload timers\n for (const id in this._timers) {\n clearTimeout(this._timers[id]);\n delete this._timers[id];\n }\n for (const id in this._tiles) {\n const tile = this._tiles[id];\n this._setTileReloadTimer(id, tile);\n }\n }\n }\n\n _updateCoveredAndRetainedTiles(\n retain: { [_: string]: OverscaledTileID },\n minCoveringZoom: number,\n maxCoveringZoom: number,\n zoom: number,\n idealTileIDs: OverscaledTileID[],\n terrain?: Terrain\n ) {\n const tilesForFading: { [_: string]: OverscaledTileID } = {};\n const fadingTiles = {};\n const ids = Object.keys(retain);\n const now = browser.now();\n for (const id of ids) {\n const tileID = retain[id];\n\n const tile = this._tiles[id];\n\n // when fadeEndTime is 0, the tile is created but registerFadeDuration\n // has not been called, therefore must be kept in fadingTiles dictionary\n // for next round of rendering\n if (!tile || (tile.fadeEndTime !== 0 && tile.fadeEndTime <= now)) {\n continue;\n }\n\n // if the tile is loaded but still fading in, find parents to cross-fade with it\n const parentTile = this.findLoadedParent(tileID, minCoveringZoom);\n const siblingTile = this.findLoadedSibling(tileID);\n const fadeTileRef = parentTile || siblingTile || null;\n if (fadeTileRef) {\n this._addTile(fadeTileRef.tileID);\n tilesForFading[fadeTileRef.tileID.key] = fadeTileRef.tileID;\n }\n\n fadingTiles[id] = tileID;\n }\n\n // for tiles that are still fading in, also find children to cross-fade with\n this._retainLoadedChildren(fadingTiles, zoom, maxCoveringZoom, retain);\n\n for (const id in tilesForFading) {\n if (!retain[id]) {\n // If a tile is only needed for fading, mark it as covered so that it isn't rendered on it's own.\n this._coveredTiles[id] = true;\n retain[id] = tilesForFading[id];\n }\n }\n\n // disable fading logic in terrain3D mode to avoid rendering two tiles on the same place\n if (terrain) {\n const idealRasterTileIDs: { [_: string]: OverscaledTileID } = {};\n const missingTileIDs: { [_: string]: OverscaledTileID } = {};\n for (const tileID of idealTileIDs) {\n if (this._tiles[tileID.key].hasData())\n idealRasterTileIDs[tileID.key] = tileID;\n else\n missingTileIDs[tileID.key] = tileID;\n }\n // search for a complete set of children for each missing tile\n for (const key in missingTileIDs) {\n const children = missingTileIDs[key].children(this._source.maxzoom);\n if (this._tiles[children[0].key] && this._tiles[children[1].key] && this._tiles[children[2].key] && this._tiles[children[3].key]) {\n idealRasterTileIDs[children[0].key] = retain[children[0].key] = children[0];\n idealRasterTileIDs[children[1].key] = retain[children[1].key] = children[1];\n idealRasterTileIDs[children[2].key] = retain[children[2].key] = children[2];\n idealRasterTileIDs[children[3].key] = retain[children[3].key] = children[3];\n delete missingTileIDs[key];\n }\n }\n // search for parent or sibling for each missing tile\n for (const key in missingTileIDs) {\n const tileID = missingTileIDs[key];\n const parentTile = this.findLoadedParent(tileID, this._source.minzoom);\n const siblingTile = this.findLoadedSibling(tileID);\n const fadeTileRef = parentTile || siblingTile || null;\n if (fadeTileRef) {\n idealRasterTileIDs[fadeTileRef.tileID.key] = retain[fadeTileRef.tileID.key] = fadeTileRef.tileID;\n // remove idealTiles which would be rendered twice\n for (const key in idealRasterTileIDs) {\n if (idealRasterTileIDs[key].isChildOf(fadeTileRef.tileID)) delete idealRasterTileIDs[key];\n }\n }\n }\n // cover all tiles which are not needed\n for (const key in this._tiles) {\n if (!idealRasterTileIDs[key]) this._coveredTiles[key] = true;\n }\n }\n }\n\n /**\n * Removes tiles that are outside the viewport and adds new tiles that\n * are inside the viewport.\n */\n update(transform: ITransform, terrain?: Terrain) {\n if (!this._sourceLoaded || this._paused) {\n return;\n }\n this.transform = transform;\n this.terrain = terrain;\n\n this.updateCacheSize(transform);\n this.handleWrapJump(this.transform.center.lng);\n\n // Covered is a list of retained tiles who's areas are fully covered by other,\n // better, retained tiles. They are not drawn separately.\n this._coveredTiles = {};\n\n let idealTileIDs: OverscaledTileID[];\n\n if (!this.used && !this.usedForTerrain) {\n idealTileIDs = [];\n } else if (this._source.tileID) {\n idealTileIDs = transform.getVisibleUnwrappedCoordinates(this._source.tileID)\n .map((unwrapped) => new OverscaledTileID(unwrapped.canonical.z, unwrapped.wrap, unwrapped.canonical.z, unwrapped.canonical.x, unwrapped.canonical.y));\n } else {\n idealTileIDs = coveringTiles(transform, {\n tileSize: this.usedForTerrain ? this.tileSize : this._source.tileSize,\n minzoom: this._source.minzoom,\n maxzoom: this._source.maxzoom,\n roundZoom: this.usedForTerrain ? false : this._source.roundZoom,\n reparseOverscaled: this._source.reparseOverscaled,\n terrain,\n calculateTileZoom: this._source.calculateTileZoom\n });\n\n if (this._source.hasTile) {\n idealTileIDs = idealTileIDs.filter((coord) => (this._source.hasTile as any)(coord));\n }\n }\n\n // Determine the overzooming/underzooming amounts.\n const zoom = coveringZoomLevel(transform, this._source);\n const minCoveringZoom = Math.max(zoom - SourceCache.maxOverzooming, this._source.minzoom);\n const maxCoveringZoom = Math.max(zoom + SourceCache.maxUnderzooming, this._source.minzoom);\n\n // When sourcecache is used for terrain also load parent tiles to avoid flickering when zooming out\n if (this.usedForTerrain) {\n const parents = {};\n for (const tileID of idealTileIDs) {\n if (tileID.canonical.z > this._source.minzoom) {\n const parent = tileID.scaledTo(tileID.canonical.z - 1);\n parents[parent.key] = parent;\n // load very low zoom to calculate tile visibility in transform.coveringTiles and high zoomlevels correct\n const parent2 = tileID.scaledTo(Math.max(this._source.minzoom, Math.min(tileID.canonical.z, 5)));\n parents[parent2.key] = parent2;\n }\n }\n idealTileIDs = idealTileIDs.concat(Object.values(parents));\n }\n\n const noPendingDataEmissions = idealTileIDs.length === 0 && !this._updated && this._didEmitContent;\n this._updated = true;\n // if we won't have any tiles to fetch and content is already emitted\n // there will be no more data emissions, so we need to emit the event with isSourceLoaded = true\n if (noPendingDataEmissions) {\n this.fire(new Event('data', {sourceDataType: 'idle', dataType: 'source', sourceId: this.id}));\n }\n\n // Retain is a list of tiles that we shouldn't delete, even if they are not\n // the most ideal tile for the current viewport. This may include tiles like\n // parent or child tiles that are *already* loaded.\n const retain = this._updateRetainedTiles(idealTileIDs, zoom);\n\n if (isRasterType(this._source.type)) {\n this._updateCoveredAndRetainedTiles(retain, minCoveringZoom, maxCoveringZoom, zoom, idealTileIDs, terrain);\n }\n\n for (const retainedId in retain) {\n // Make sure retained tiles always clear any existing fade holds\n // so that if they're removed again their fade timer starts fresh.\n this._tiles[retainedId].clearFadeHold();\n }\n\n // Remove the tiles we don't need anymore.\n const remove = keysDifference(this._tiles, retain);\n for (const tileID of remove) {\n const tile = this._tiles[tileID];\n if (tile.hasSymbolBuckets && !tile.holdingForFade()) {\n tile.setHoldDuration(this.map._fadeDuration);\n } else if (!tile.hasSymbolBuckets || tile.symbolFadeFinished()) {\n this._removeTile(tileID);\n }\n }\n\n // Construct caches of loaded parents & siblings\n this._updateLoadedParentTileCache();\n this._updateLoadedSiblingTileCache();\n }\n\n releaseSymbolFadeTiles() {\n for (const id in this._tiles) {\n if (this._tiles[id].holdingForFade()) {\n this._removeTile(id);\n }\n }\n }\n\n _updateRetainedTiles(idealTileIDs: Array, zoom: number): {[_: string]: OverscaledTileID} {\n const retain: {[_: string]: OverscaledTileID} = {};\n const checked: {[_: string]: boolean} = {};\n const minCoveringZoom = Math.max(zoom - SourceCache.maxOverzooming, this._source.minzoom);\n const maxCoveringZoom = Math.max(zoom + SourceCache.maxUnderzooming, this._source.minzoom);\n\n const missingTiles = {};\n for (const tileID of idealTileIDs) {\n const tile = this._addTile(tileID);\n\n // retain the tile even if it's not loaded because it's an ideal tile.\n retain[tileID.key] = tileID;\n\n if (tile.hasData()) continue;\n\n if (zoom < this._source.maxzoom) {\n // save missing tiles that potentially have loaded children\n missingTiles[tileID.key] = tileID;\n }\n }\n\n // retain any loaded children of ideal tiles up to maxCoveringZoom\n this._retainLoadedChildren(missingTiles, zoom, maxCoveringZoom, retain);\n\n for (const tileID of idealTileIDs) {\n let tile = this._tiles[tileID.key];\n\n if (tile.hasData()) continue;\n\n // The tile we require is not yet loaded or does not exist;\n // Attempt to find children that fully cover it.\n\n if (zoom + 1 > this._source.maxzoom) {\n // We're looking for an overzoomed child tile.\n const childCoord = tileID.children(this._source.maxzoom)[0];\n const childTile = this.getTile(childCoord);\n if (!!childTile && childTile.hasData()) {\n retain[childCoord.key] = childCoord;\n continue; // tile is covered by overzoomed child\n }\n } else {\n // check if all 4 immediate children are loaded (i.e. the missing ideal tile is covered)\n const children = tileID.children(this._source.maxzoom);\n\n if (retain[children[0].key] &&\n retain[children[1].key] &&\n retain[children[2].key] &&\n retain[children[3].key]) continue; // tile is covered by children\n }\n\n // We couldn't find child tiles that entirely cover the ideal tile; look for parents now.\n\n // As we ascend up the tile pyramid of the ideal tile, we check whether the parent\n // tile has been previously requested (and errored because we only loop over tiles with no data)\n // in order to determine if we need to request its parent.\n let parentWasRequested = tile.wasRequested();\n\n for (let overscaledZ = tileID.overscaledZ - 1; overscaledZ >= minCoveringZoom; --overscaledZ) {\n const parentId = tileID.scaledTo(overscaledZ);\n\n // Break parent tile ascent if this route has been previously checked by another child.\n if (checked[parentId.key]) break;\n checked[parentId.key] = true;\n\n tile = this.getTile(parentId);\n if (!tile && parentWasRequested) {\n tile = this._addTile(parentId);\n }\n if (tile) {\n const hasData = tile.hasData();\n if (hasData || !this.map?.cancelPendingTileRequestsWhileZooming || parentWasRequested) {\n retain[parentId.key] = parentId;\n }\n // Save the current values, since they're the parent of the next iteration\n // of the parent tile ascent loop.\n parentWasRequested = tile.wasRequested();\n if (hasData) break;\n }\n }\n }\n\n return retain;\n }\n\n _updateLoadedParentTileCache() {\n this._loadedParentTiles = {};\n\n for (const tileKey in this._tiles) {\n const path = [];\n let parentTile: Tile;\n let currentId = this._tiles[tileKey].tileID;\n\n // Find the closest loaded ancestor by traversing the tile tree towards the root and\n // caching results along the way\n while (currentId.overscaledZ > 0) {\n\n // Do we have a cached result from previous traversals?\n if (currentId.key in this._loadedParentTiles) {\n parentTile = this._loadedParentTiles[currentId.key];\n break;\n }\n\n path.push(currentId.key);\n\n // Is the parent loaded?\n const parentId = currentId.scaledTo(currentId.overscaledZ - 1);\n parentTile = this._getLoadedTile(parentId);\n if (parentTile) {\n break;\n }\n\n currentId = parentId;\n }\n\n // Cache the result of this traversal to all newly visited tiles\n for (const key of path) {\n this._loadedParentTiles[key] = parentTile;\n }\n }\n }\n\n /**\n * Update the cache of loaded sibling tiles\n *\n * Sibling tiles are tiles that share the same zoom level and\n * x/y position but have different wrap values\n * Maintaining sibling tile cache allows fading from old to new tiles\n * of the same position and zoom level\n */\n _updateLoadedSiblingTileCache() {\n this._loadedSiblingTiles = {};\n\n for (const tileKey in this._tiles) {\n const currentId = this._tiles[tileKey].tileID;\n const siblingTile: Tile = this._getLoadedTile(currentId);\n this._loadedSiblingTiles[currentId.key] = siblingTile;\n }\n }\n\n /**\n * Add a tile, given its coordinate, to the pyramid.\n */\n _addTile(tileID: OverscaledTileID): Tile {\n let tile = this._tiles[tileID.key];\n if (tile)\n return tile;\n\n tile = this._cache.getAndRemove(tileID);\n if (tile) {\n this._setTileReloadTimer(tileID.key, tile);\n // set the tileID because the cached tile could have had a different wrap value\n tile.tileID = tileID;\n this._state.initializeTileState(tile, this.map ? this.map.painter : null);\n if (this._cacheTimers[tileID.key]) {\n clearTimeout(this._cacheTimers[tileID.key]);\n delete this._cacheTimers[tileID.key];\n this._setTileReloadTimer(tileID.key, tile);\n }\n }\n\n const cached = tile;\n\n if (!tile) {\n tile = new Tile(tileID, this._source.tileSize * tileID.overscaleFactor());\n this._loadTile(tile, tileID.key, tile.state);\n }\n\n tile.uses++;\n this._tiles[tileID.key] = tile;\n if (!cached) {\n this._source.fire(new Event('dataloading', {tile, coord: tile.tileID, dataType: 'source'}));\n }\n\n return tile;\n }\n\n _setTileReloadTimer(id: string, tile: Tile) {\n if (id in this._timers) {\n clearTimeout(this._timers[id]);\n delete this._timers[id];\n }\n\n const expiryTimeout = tile.getExpiryTimeout();\n if (expiryTimeout) {\n this._timers[id] = setTimeout(() => {\n this._reloadTile(id, 'expired');\n delete this._timers[id];\n }, expiryTimeout);\n }\n }\n\n /**\n * Remove a tile, given its id, from the pyramid\n */\n _removeTile(id: string) {\n const tile = this._tiles[id];\n if (!tile)\n return;\n\n tile.uses--;\n delete this._tiles[id];\n if (this._timers[id]) {\n clearTimeout(this._timers[id]);\n delete this._timers[id];\n }\n\n if (tile.uses > 0)\n return;\n\n if (tile.hasData() && tile.state !== 'reloading') {\n this._cache.add(tile.tileID, tile, tile.getExpiryTimeout());\n } else {\n tile.aborted = true;\n this._abortTile(tile);\n this._unloadTile(tile);\n }\n }\n\n /** @internal */\n private _dataHandler(e: MapSourceDataEvent) {\n\n const eventSourceDataType = e.sourceDataType;\n if (e.dataType === 'source' && eventSourceDataType === 'metadata') {\n this._sourceLoaded = true;\n }\n\n // for sources with mutable data, this event fires when the underlying data\n // to a source is changed. (i.e. GeoJSONSource#setData and ImageSource#serCoordinates)\n if (this._sourceLoaded && !this._paused && e.dataType === 'source' && eventSourceDataType === 'content') {\n this.reload(e.sourceDataChanged);\n if (this.transform) {\n this.update(this.transform, this.terrain);\n }\n\n this._didEmitContent = true;\n }\n }\n\n /**\n * Remove all tiles from this pyramid\n */\n clearTiles() {\n this._shouldReloadOnResume = false;\n this._paused = false;\n\n for (const id in this._tiles)\n this._removeTile(id);\n\n this._cache.reset();\n }\n\n /**\n * Search through our current tiles and attempt to find the tiles that\n * cover the given bounds.\n * @param pointQueryGeometry - coordinates of the corners of bounding rectangle\n * @returns result items have `{tile, minX, maxX, minY, maxY}`, where min/max bounding values are the given bounds transformed in into the coordinate space of this tile.\n */\n tilesIn(pointQueryGeometry: Array, maxPitchScaleFactor: number, has3DLayer: boolean) {\n const tileResults: TileResult[] = [];\n\n const transform = this.transform;\n if (!transform) return tileResults;\n\n const cameraPointQueryGeometry = has3DLayer ?\n transform.getCameraQueryGeometry(pointQueryGeometry) :\n pointQueryGeometry;\n\n const queryGeometry = pointQueryGeometry.map((p: Point) => transform.screenPointToMercatorCoordinate(p, this.terrain));\n const cameraQueryGeometry = cameraPointQueryGeometry.map((p: Point) => transform.screenPointToMercatorCoordinate(p, this.terrain));\n\n const ids = this.getIds();\n\n let minX = Infinity;\n let minY = Infinity;\n let maxX = -Infinity;\n let maxY = -Infinity;\n\n for (const p of cameraQueryGeometry) {\n minX = Math.min(minX, p.x);\n minY = Math.min(minY, p.y);\n maxX = Math.max(maxX, p.x);\n maxY = Math.max(maxY, p.y);\n }\n\n for (let i = 0; i < ids.length; i++) {\n const tile = this._tiles[ids[i]];\n if (tile.holdingForFade()) {\n // Tiles held for fading are covered by tiles that are closer to ideal\n continue;\n }\n const tileID = tile.tileID;\n const scale = Math.pow(2, transform.zoom - tile.tileID.overscaledZ);\n const queryPadding = maxPitchScaleFactor * tile.queryPadding * EXTENT / tile.tileSize / scale;\n\n const tileSpaceBounds = [\n tileID.getTilePoint(new MercatorCoordinate(minX, minY)),\n tileID.getTilePoint(new MercatorCoordinate(maxX, maxY))\n ];\n\n if (tileSpaceBounds[0].x - queryPadding < EXTENT && tileSpaceBounds[0].y - queryPadding < EXTENT &&\n tileSpaceBounds[1].x + queryPadding >= 0 && tileSpaceBounds[1].y + queryPadding >= 0) {\n\n const tileSpaceQueryGeometry: Array = queryGeometry.map((c) => tileID.getTilePoint(c));\n const tileSpaceCameraQueryGeometry = cameraQueryGeometry.map((c) => tileID.getTilePoint(c));\n\n tileResults.push({\n tile,\n tileID,\n queryGeometry: tileSpaceQueryGeometry,\n cameraQueryGeometry: tileSpaceCameraQueryGeometry,\n scale\n });\n }\n }\n\n return tileResults;\n }\n\n getVisibleCoordinates(symbolLayer?: boolean): Array {\n const coords = this.getRenderableIds(symbolLayer).map((id) => this._tiles[id].tileID);\n if (this.transform) {\n this.transform.precacheTiles(coords);\n }\n return coords;\n }\n\n hasTransition() {\n if (this._source.hasTransition()) {\n return true;\n }\n\n if (isRasterType(this._source.type)) {\n const now = browser.now();\n for (const id in this._tiles) {\n const tile = this._tiles[id];\n if (tile.fadeEndTime >= now) {\n return true;\n }\n }\n }\n\n return false;\n }\n\n /**\n * Set the value of a particular state for a feature\n */\n setFeatureState(sourceLayer: string, featureId: number | string, state: any) {\n sourceLayer = sourceLayer || '_geojsonTileLayer';\n this._state.updateState(sourceLayer, featureId, state);\n }\n\n /**\n * Resets the value of a particular state key for a feature\n */\n removeFeatureState(sourceLayer?: string, featureId?: number | string, key?: string) {\n sourceLayer = sourceLayer || '_geojsonTileLayer';\n this._state.removeFeatureState(sourceLayer, featureId, key);\n }\n\n /**\n * Get the entire state object for a feature\n */\n getFeatureState(sourceLayer: string, featureId: number | string) {\n sourceLayer = sourceLayer || '_geojsonTileLayer';\n return this._state.getState(sourceLayer, featureId);\n }\n\n /**\n * Sets the set of keys that the tile depends on. This allows tiles to\n * be reloaded when their dependencies change.\n */\n setDependencies(tileKey: string, namespace: string, dependencies: Array) {\n const tile = this._tiles[tileKey];\n if (tile) {\n tile.setDependencies(namespace, dependencies);\n }\n }\n\n /**\n * Reloads all tiles that depend on the given keys.\n */\n reloadTilesForDependencies(namespaces: Array, keys: Array) {\n for (const id in this._tiles) {\n const tile = this._tiles[id];\n if (tile.hasDependency(namespaces, keys)) {\n this._reloadTile(id, 'reloading');\n }\n }\n this._cache.filter(tile => !tile.hasDependency(namespaces, keys));\n }\n}\n\nSourceCache.maxOverzooming = 10;\nSourceCache.maxUnderzooming = 3;\n\nfunction compareTileId(a: OverscaledTileID, b: OverscaledTileID): number {\n // Different copies of the world are sorted based on their distance to the center.\n // Wrap values are converted to unsigned distances by reserving odd number for copies\n // with negative wrap and even numbers for copies with positive wrap.\n const aWrap = Math.abs(a.wrap * 2) - +(a.wrap < 0);\n const bWrap = Math.abs(b.wrap * 2) - +(b.wrap < 0);\n return a.overscaledZ - b.overscaledZ || bWrap - aWrap || b.canonical.y - a.canonical.y || b.canonical.x - a.canonical.x;\n}\n\nfunction isRasterType(type) {\n return type === 'raster' || type === 'image' || type === 'video';\n}\n","import {clamp} from '../util/util';\nimport type Point from '@mapbox/point-geometry';\n\nexport class PathInterpolator {\n points: Array;\n length: number;\n paddedLength: number;\n padding: number;\n _distances: Array;\n\n constructor(points_?: Array | null, padding_?: number | null) {\n this.reset(points_, padding_);\n }\n\n reset(points_?: Array | null, padding_?: number | null) {\n this.points = points_ || [];\n\n // Compute cumulative distance from first point to every other point in the segment.\n // Last entry in the array is total length of the path\n this._distances = [0.0];\n\n for (let i = 1; i < this.points.length; i++) {\n this._distances[i] = this._distances[i - 1] + this.points[i].dist(this.points[i - 1]);\n }\n\n this.length = this._distances[this._distances.length - 1];\n this.padding = Math.min(padding_ || 0, this.length * 0.5);\n this.paddedLength = this.length - this.padding * 2.0;\n }\n\n lerp(t: number): Point {\n if (this.points.length === 1) {\n return this.points[0];\n }\n\n t = clamp(t, 0, 1);\n\n // Find the correct segment [p0, p1] where p0 <= x < p1\n let currentIndex = 1;\n let distOfCurrentIdx = this._distances[currentIndex];\n const distToTarget = t * this.paddedLength + this.padding;\n\n while (distOfCurrentIdx < distToTarget && currentIndex < this._distances.length) {\n distOfCurrentIdx = this._distances[++currentIndex];\n }\n\n // Interpolate between the two points of the segment\n const idxOfPrevPoint = currentIndex - 1;\n const distOfPrevIdx = this._distances[idxOfPrevPoint];\n const segmentLength = distOfCurrentIdx - distOfPrevIdx;\n const segmentT = segmentLength > 0 ? (distToTarget - distOfPrevIdx) / segmentLength : 0;\n\n return this.points[idxOfPrevPoint].mult(1.0 - segmentT).add(this.points[currentIndex].mult(segmentT));\n }\n}\n","import type {OverlapMode} from '../style/style_layer/overlap_mode';\n\ntype QueryArgs = {\n hitTest: boolean;\n overlapMode?: OverlapMode;\n circle?: {\n x: number;\n y: number;\n radius: number;\n };\n seenUids: {\n box: {\n [_: number]: boolean;\n };\n circle: {\n [_: number]: boolean;\n };\n };\n};\n\ntype QueryResult = {\n key: T;\n x1: number;\n y1: number;\n x2: number;\n y2: number;\n};\n\n/**\n * A key for the grid\n */\nexport type GridKey = {\n overlapMode?: OverlapMode;\n}\n\nfunction overlapAllowed(overlapA: OverlapMode, overlapB: OverlapMode): boolean {\n let allowed = true;\n\n if (overlapA === 'always') {\n // symbol A using 'always' overlap - allowed to overlap anything.\n } else if (overlapA === 'never' || overlapB === 'never') {\n // symbol A using 'never' overlap - can't overlap anything\n // symbol A using 'cooperative' overlap - can overlap 'always' or 'cooperative' symbol; can't overlap 'never'\n allowed = false;\n }\n\n return allowed;\n}\n\n/**\n * @internal\n * GridIndex is a data structure for testing the intersection of\n * circles and rectangles in a 2d plane.\n * It is optimized for rapid insertion and querying.\n * GridIndex splits the plane into a set of \"cells\" and keeps track\n * of which geometries intersect with each cell. At query time,\n * full geometry comparisons are only done for items that share\n * at least one cell. As long as the geometries are relatively\n * uniformly distributed across the plane, this greatly reduces\n * the number of comparisons necessary.\n */\nexport class GridIndex {\n circleKeys: Array;\n boxKeys: Array;\n boxCells: Array>;\n circleCells: Array>;\n bboxes: Array;\n circles: Array;\n xCellCount: number;\n yCellCount: number;\n width: number;\n height: number;\n xScale: number;\n yScale: number;\n boxUid: number;\n circleUid: number;\n\n constructor (width: number, height: number, cellSize: number) {\n const boxCells = this.boxCells = [];\n const circleCells = this.circleCells = [];\n\n // More cells -> fewer geometries to check per cell, but items tend\n // to be split across more cells.\n // Sweet spot allows most small items to fit in one cell\n this.xCellCount = Math.ceil(width / cellSize);\n this.yCellCount = Math.ceil(height / cellSize);\n\n for (let i = 0; i < this.xCellCount * this.yCellCount; i++) {\n boxCells.push([]);\n circleCells.push([]);\n }\n this.circleKeys = [];\n this.boxKeys = [];\n this.bboxes = [];\n this.circles = [];\n\n this.width = width;\n this.height = height;\n this.xScale = this.xCellCount / width;\n this.yScale = this.yCellCount / height;\n this.boxUid = 0;\n this.circleUid = 0;\n }\n\n keysLength() {\n return this.boxKeys.length + this.circleKeys.length;\n }\n\n insert(key: T, x1: number, y1: number, x2: number, y2: number) {\n this._forEachCell(x1, y1, x2, y2, this._insertBoxCell, this.boxUid++);\n this.boxKeys.push(key);\n this.bboxes.push(x1);\n this.bboxes.push(y1);\n this.bboxes.push(x2);\n this.bboxes.push(y2);\n }\n\n insertCircle(key: T, x: number, y: number, radius: number) {\n // Insert circle into grid for all cells in the circumscribing square\n // It's more than necessary (by a factor of 4/PI), but fast to insert\n this._forEachCell(x - radius, y - radius, x + radius, y + radius, this._insertCircleCell, this.circleUid++);\n this.circleKeys.push(key);\n this.circles.push(x);\n this.circles.push(y);\n this.circles.push(radius);\n }\n\n private _insertBoxCell(x1: number, y1: number, x2: number, y2: number, cellIndex: number, uid: number) {\n this.boxCells[cellIndex].push(uid);\n }\n\n private _insertCircleCell(x1: number, y1: number, x2: number, y2: number, cellIndex: number, uid: number) {\n this.circleCells[cellIndex].push(uid);\n }\n\n private _query(x1: number, y1: number, x2: number, y2: number, hitTest: boolean, overlapMode: OverlapMode, predicate?: (key: T) => boolean): Array> {\n if (x2 < 0 || x1 > this.width || y2 < 0 || y1 > this.height) {\n return [];\n }\n const result: Array> = [];\n if (x1 <= 0 && y1 <= 0 && this.width <= x2 && this.height <= y2) {\n if (hitTest) {\n // Covers the entire grid, so collides with everything\n return [{\n key: null,\n x1,\n y1,\n x2,\n y2\n }];\n }\n for (let boxUid = 0; boxUid < this.boxKeys.length; boxUid++) {\n result.push({\n key: this.boxKeys[boxUid],\n x1: this.bboxes[boxUid * 4],\n y1: this.bboxes[boxUid * 4 + 1],\n x2: this.bboxes[boxUid * 4 + 2],\n y2: this.bboxes[boxUid * 4 + 3]\n });\n }\n for (let circleUid = 0; circleUid < this.circleKeys.length; circleUid++) {\n const x = this.circles[circleUid * 3];\n const y = this.circles[circleUid * 3 + 1];\n const radius = this.circles[circleUid * 3 + 2];\n result.push({\n key: this.circleKeys[circleUid],\n x1: x - radius,\n y1: y - radius,\n x2: x + radius,\n y2: y + radius\n });\n }\n } else {\n const queryArgs: QueryArgs = {\n hitTest,\n overlapMode,\n seenUids: {box: {}, circle: {}}\n };\n this._forEachCell(x1, y1, x2, y2, this._queryCell, result, queryArgs, predicate);\n }\n\n return result;\n }\n\n query(x1: number, y1: number, x2: number, y2: number): Array> {\n return this._query(x1, y1, x2, y2, false, null);\n }\n\n hitTest(x1: number, y1: number, x2: number, y2: number, overlapMode: OverlapMode, predicate?: (key: T) => boolean): boolean {\n return this._query(x1, y1, x2, y2, true, overlapMode, predicate).length > 0;\n }\n\n hitTestCircle(x: number, y: number, radius: number, overlapMode: OverlapMode, predicate?: (key: T) => boolean): boolean {\n // Insert circle into grid for all cells in the circumscribing square\n // It's more than necessary (by a factor of 4/PI), but fast to insert\n const x1 = x - radius;\n const x2 = x + radius;\n const y1 = y - radius;\n const y2 = y + radius;\n if (x2 < 0 || x1 > this.width || y2 < 0 || y1 > this.height) {\n return false;\n }\n\n // Box query early exits if the bounding box is larger than the grid, but we don't do\n // the equivalent calculation for circle queries because early exit is less likely\n // and the calculation is more expensive\n const result: boolean[] = [];\n const queryArgs: QueryArgs = {\n hitTest: true,\n overlapMode,\n circle: {x, y, radius},\n seenUids: {box: {}, circle: {}}\n };\n this._forEachCell(x1, y1, x2, y2, this._queryCellCircle, result, queryArgs, predicate);\n return result.length > 0;\n }\n\n private _queryCell(x1: number, y1: number, x2: number, y2: number, cellIndex: number, result: Array>, queryArgs: QueryArgs, predicate?: (key: T) => boolean): boolean {\n const {seenUids, hitTest, overlapMode} = queryArgs;\n const boxCell = this.boxCells[cellIndex];\n\n if (boxCell !== null) {\n const bboxes = this.bboxes;\n for (const boxUid of boxCell) {\n if (!seenUids.box[boxUid]) {\n seenUids.box[boxUid] = true;\n const offset = boxUid * 4;\n const key = this.boxKeys[boxUid];\n\n if ((x1 <= bboxes[offset + 2]) &&\n (y1 <= bboxes[offset + 3]) &&\n (x2 >= bboxes[offset + 0]) &&\n (y2 >= bboxes[offset + 1]) &&\n (!predicate || predicate(key))) {\n if (!hitTest || !overlapAllowed(overlapMode, key.overlapMode)) {\n result.push({\n key,\n x1: bboxes[offset],\n y1: bboxes[offset + 1],\n x2: bboxes[offset + 2],\n y2: bboxes[offset + 3]\n });\n if (hitTest) {\n // true return value stops the query after first match\n return true;\n }\n }\n }\n }\n }\n }\n const circleCell = this.circleCells[cellIndex];\n if (circleCell !== null) {\n const circles = this.circles;\n for (const circleUid of circleCell) {\n if (!seenUids.circle[circleUid]) {\n seenUids.circle[circleUid] = true;\n const offset = circleUid * 3;\n const key = this.circleKeys[circleUid];\n\n if (this._circleAndRectCollide(\n circles[offset],\n circles[offset + 1],\n circles[offset + 2],\n x1,\n y1,\n x2,\n y2) &&\n (!predicate || predicate(key))) {\n if (!hitTest || !overlapAllowed(overlapMode, key.overlapMode)) {\n const x = circles[offset];\n const y = circles[offset + 1];\n const radius = circles[offset + 2];\n result.push({\n key,\n x1: x - radius,\n y1: y - radius,\n x2: x + radius,\n y2: y + radius\n });\n if (hitTest) {\n // true return value stops the query after first match\n return true;\n }\n }\n }\n }\n }\n }\n\n // false return to continue query\n return false;\n }\n\n private _queryCellCircle(x1: number, y1: number, x2: number, y2: number, cellIndex: number, result: Array, queryArgs: QueryArgs, predicate?: (key: T) => boolean): boolean {\n const {circle, seenUids, overlapMode} = queryArgs;\n const boxCell = this.boxCells[cellIndex];\n\n if (boxCell !== null) {\n const bboxes = this.bboxes;\n for (const boxUid of boxCell) {\n if (!seenUids.box[boxUid]) {\n seenUids.box[boxUid] = true;\n const offset = boxUid * 4;\n const key = this.boxKeys[boxUid];\n if (this._circleAndRectCollide(\n circle.x,\n circle.y,\n circle.radius,\n bboxes[offset + 0],\n bboxes[offset + 1],\n bboxes[offset + 2],\n bboxes[offset + 3]) &&\n (!predicate || predicate(key)) &&\n !overlapAllowed(overlapMode, key.overlapMode)) {\n result.push(true);\n return true;\n }\n }\n }\n }\n\n const circleCell = this.circleCells[cellIndex];\n if (circleCell !== null) {\n const circles = this.circles;\n for (const circleUid of circleCell) {\n if (!seenUids.circle[circleUid]) {\n seenUids.circle[circleUid] = true;\n const offset = circleUid * 3;\n const key = this.circleKeys[circleUid];\n if (this._circlesCollide(\n circles[offset],\n circles[offset + 1],\n circles[offset + 2],\n circle.x,\n circle.y,\n circle.radius) &&\n (!predicate || predicate(key)) &&\n !overlapAllowed(overlapMode, key.overlapMode)) {\n result.push(true);\n return true;\n }\n }\n }\n }\n }\n\n private _forEachCell(\n x1: number,\n y1: number,\n x2: number,\n y2: number,\n fn: (x1: number, y1: number, x2: number, y2: number, cellIndex: number, arg1: TArg, arg2?: QueryArgs, predicate?: (key: T) => boolean) => boolean | void,\n arg1: TArg,\n arg2?: QueryArgs,\n predicate?: (key: T) => boolean) {\n const cx1 = this._convertToXCellCoord(x1);\n const cy1 = this._convertToYCellCoord(y1);\n const cx2 = this._convertToXCellCoord(x2);\n const cy2 = this._convertToYCellCoord(y2);\n\n for (let x = cx1; x <= cx2; x++) {\n for (let y = cy1; y <= cy2; y++) {\n const cellIndex = this.xCellCount * y + x;\n if (fn.call(this, x1, y1, x2, y2, cellIndex, arg1, arg2, predicate)) return;\n }\n }\n }\n\n private _convertToXCellCoord(x: number) {\n return Math.max(0, Math.min(this.xCellCount - 1, Math.floor(x * this.xScale)));\n }\n\n private _convertToYCellCoord(y: number) {\n return Math.max(0, Math.min(this.yCellCount - 1, Math.floor(y * this.yScale)));\n }\n\n private _circlesCollide(x1: number, y1: number, r1: number, x2: number, y2: number, r2: number): boolean {\n const dx = x2 - x1;\n const dy = y2 - y1;\n const bothRadii = r1 + r2;\n return (bothRadii * bothRadii) > (dx * dx + dy * dy);\n }\n\n private _circleAndRectCollide(\n circleX: number,\n circleY: number,\n radius: number,\n x1: number,\n y1: number,\n x2: number,\n y2: number\n ): boolean {\n const halfRectWidth = (x2 - x1) / 2;\n const distX = Math.abs(circleX - (x1 + halfRectWidth));\n if (distX > (halfRectWidth + radius)) {\n return false;\n }\n\n const halfRectHeight = (y2 - y1) / 2;\n const distY = Math.abs(circleY - (y1 + halfRectHeight));\n if (distY > (halfRectHeight + radius)) {\n return false;\n }\n\n if (distX <= halfRectWidth || distY <= halfRectHeight) {\n return true;\n }\n\n const dx = distX - halfRectWidth;\n const dy = distY - halfRectHeight;\n return (dx * dx + dy * dy <= (radius * radius));\n }\n}\n","import Point from '@mapbox/point-geometry';\n\nimport {mat2, mat4, vec2, vec4} from 'gl-matrix';\nimport * as symbolSize from './symbol_size';\nimport {addDynamicAttributes} from '../data/bucket/symbol_bucket';\n\nimport type {Painter} from '../render/painter';\nimport type {IReadonlyTransform} from '../geo/transform_interface';\nimport type {SymbolBucket} from '../data/bucket/symbol_bucket';\nimport type {\n GlyphOffsetArray,\n SymbolLineVertexArray,\n SymbolDynamicLayoutArray\n} from '../data/array_types.g';\nimport {WritingMode} from '../symbol/shaping';\nimport {findLineIntersection} from '../util/util';\nimport {type UnwrappedTileID} from '../source/tile_id';\nimport {type StructArray} from '../util/struct_array';\n\n/**\n * The result of projecting a point to the screen, with some additional information about the projection.\n */\nexport type PointProjection = {\n /**\n * The projected point.\n */\n point: Point;\n /**\n * The original W component of the projection.\n */\n signedDistanceFromCamera: number;\n /**\n * For complex projections (such as globe), true if the point is occluded by the projection, such as by being on the backfacing side of the globe.\n * If the point is simply beyond the edge of the screen, this should NOT be set to false.\n */\n isOccluded: boolean;\n};\n\n/*\n * # Overview of coordinate spaces\n *\n * ## Tile coordinate spaces\n * Each label has an anchor. Some labels have corresponding line geometries.\n * The points for both anchors and lines are stored in tile units. Each tile has it's own\n * coordinate space going from (0, 0) at the top left to (EXTENT, EXTENT) at the bottom right.\n *\n * ## Clip space (GL coordinate space)\n * At the end of everything, the vertex shader needs to produce a position in clip space,\n * which is (-1, 1) at the top left and (1, -1) in the bottom right.\n * In the depth buffer, values are between 0 (near plane) to 1 (far plane).\n *\n * ## Map pixel coordinate spaces\n * Each tile has a pixel coordinate space. It's just the tile units scaled so that one unit is\n * whatever counts as 1 pixel at the current zoom.\n * This space is used for pitch-alignment=map, rotation-alignment=map\n *\n * ## Rotated map pixel coordinate spaces\n * Like the above, but rotated so axis of the space are aligned with the viewport instead of the tile.\n * This space is used for pitch-alignment=map, rotation-alignment=viewport\n *\n * ## Viewport pixel coordinate space\n * (0, 0) is at the top left of the canvas and (pixelWidth, pixelHeight) is at the bottom right corner\n * of the canvas. This space is used for pitch-alignment=viewport\n *\n *\n * # Vertex projection\n * It goes roughly like this:\n * 1. project the anchor and line from tile units into the correct label coordinate space\n * - map pixel space pitch-alignment=map rotation-alignment=map\n * - rotated map pixel space pitch-alignment=map rotation-alignment=viewport\n * - viewport pixel space pitch-alignment=viewport rotation-alignment=*\n * 2. if the label follows a line, find the point along the line that is the correct distance from the anchor.\n * 3. add the glyph's corner offset to the point from step 3\n * 4. convert from the label coordinate space to clip space\n *\n * For horizontal labels we want to do step 1 in the shader for performance reasons (no cpu work).\n * This is what `u_label_plane_matrix` is used for.\n * For labels aligned with lines we have to steps 1 and 2 on the cpu since we need access to the line geometry.\n * This is what `updateLineLabels(...)` does.\n * Since the conversion is handled on the cpu we just set `u_label_plane_matrix` to an identity matrix.\n *\n * Steps 3 and 4 are done in the shaders for all labels.\n *\n *\n * # Custom projection handling\n * Note that since MapLibre now supports more than one projection, the transformation\n * to viewport pixel space and GL clip space now *must* go through the projection's (`transform`'s)\n * `projectTileCoordinates` function, since it might do nontrivial transformations.\n *\n * Hence projecting anything to a symbol's label plane can no longer be handled by a simple matrix,\n * since, if the symbol's label plane is viewport pixel space, `projectTileCoordinates` must be used.\n * This is applies both here and in the symbol vertex shaders.\n */\n\nexport function getPitchedLabelPlaneMatrix(\n rotateWithMap: boolean,\n transform: IReadonlyTransform,\n pixelsToTileUnits: number) {\n const m = mat4.create();\n if (!rotateWithMap) {\n const {vecSouth, vecEast} = getTileSkewVectors(transform);\n const skew = mat2.create();\n skew[0] = vecEast[0];\n skew[1] = vecEast[1];\n skew[2] = vecSouth[0];\n skew[3] = vecSouth[1];\n mat2.invert(skew, skew);\n m[0] = skew[0];\n m[1] = skew[1];\n m[4] = skew[2];\n m[5] = skew[3];\n }\n mat4.scale(m, m, [1 / pixelsToTileUnits, 1 / pixelsToTileUnits, 1]);\n return m;\n}\n\n/*\n * Returns a matrix for either converting from pitched label space to tile space,\n * or for converting from screenspace pixels to clip space.\n */\nexport function getGlCoordMatrix(\n pitchWithMap: boolean,\n rotateWithMap: boolean,\n transform: IReadonlyTransform,\n pixelsToTileUnits: number) {\n if (pitchWithMap) {\n const m = mat4.create();\n if (!rotateWithMap) {\n const {vecSouth, vecEast} = getTileSkewVectors(transform);\n m[0] = vecEast[0];\n m[1] = vecEast[1];\n m[4] = vecSouth[0];\n m[5] = vecSouth[1];\n }\n mat4.scale(m, m, [pixelsToTileUnits, pixelsToTileUnits, 1]);\n return m;\n } else {\n return transform.pixelsToClipSpaceMatrix;\n }\n}\n\nexport function getTileSkewVectors(transform: IReadonlyTransform): {vecEast: vec2; vecSouth: vec2} {\n const cosRoll = Math.cos(transform.rollInRadians);\n const sinRoll = Math.sin(transform.rollInRadians);\n const cosPitch = Math.cos(transform.pitchInRadians);\n const cosBearing = Math.cos(transform.bearingInRadians);\n const sinBearing = Math.sin(transform.bearingInRadians);\n const vecSouth = vec2.create();\n vecSouth[0] = -cosBearing * cosPitch * sinRoll - sinBearing * cosRoll;\n vecSouth[1] = -sinBearing * cosPitch * sinRoll + cosBearing * cosRoll;\n const vecSouthLen = vec2.length(vecSouth);\n if (vecSouthLen < 1.0e-9) {\n vec2.zero(vecSouth);\n } else {\n vec2.scale(vecSouth, vecSouth, 1 / vecSouthLen);\n }\n const vecEast = vec2.create();\n vecEast[0] = cosBearing * cosPitch * cosRoll - sinBearing * sinRoll;\n vecEast[1] = sinBearing * cosPitch * cosRoll + cosBearing * sinRoll;\n const vecEastLen = vec2.length(vecEast);\n if (vecEastLen < 1.0e-9) {\n vec2.zero(vecEast);\n } else {\n vec2.scale(vecEast, vecEast, 1 / vecEastLen);\n }\n\n return {vecEast, vecSouth};\n}\n\n/**\n * Projects a point using a specified matrix, including the perspective divide.\n * Uses a fast path if `getElevation` is undefined.\n */\nexport function projectWithMatrix(x: number, y: number, matrix: mat4, getElevation?: (x: number, y: number) => number): PointProjection {\n let pos;\n if (getElevation) { // slow because of handle z-index\n pos = [x, y, getElevation(x, y), 1] as vec4;\n vec4.transformMat4(pos, pos, matrix);\n } else { // fast because of ignore z-index\n pos = [x, y, 0, 1] as vec4;\n xyTransformMat4(pos, pos, matrix);\n }\n const w = pos[3];\n return {\n point: new Point(pos[0] / w, pos[1] / w),\n signedDistanceFromCamera: w,\n isOccluded: false\n };\n}\n\nexport function getPerspectiveRatio(cameraToCenterDistance: number, signedDistanceFromCamera: number): number {\n return 0.5 + 0.5 * (cameraToCenterDistance / signedDistanceFromCamera);\n}\n\nfunction isVisible(p: Point,\n clippingBuffer: [number, number]) {\n const inPaddedViewport = (\n p.x >= -clippingBuffer[0] &&\n p.x <= clippingBuffer[0] &&\n p.y >= -clippingBuffer[1] &&\n p.y <= clippingBuffer[1]);\n return inPaddedViewport;\n}\n\n/*\n * Update the `dynamicLayoutVertexBuffer` for the buffer with the correct glyph positions for the current map view.\n * This is only run on labels that are aligned with lines. Horizontal labels are handled entirely in the shader.\n */\nexport function updateLineLabels(bucket: SymbolBucket,\n painter: Painter,\n isText: boolean,\n pitchedLabelPlaneMatrix: mat4,\n pitchedLabelPlaneMatrixInverse: mat4,\n pitchWithMap: boolean,\n keepUpright: boolean,\n rotateToLine: boolean,\n unwrappedTileID: UnwrappedTileID,\n viewportWidth: number,\n viewportHeight: number,\n translation: [number, number],\n getElevation: (x: number, y: number) => number) {\n\n const sizeData = isText ? bucket.textSizeData : bucket.iconSizeData;\n const partiallyEvaluatedSize = symbolSize.evaluateSizeForZoom(sizeData, painter.transform.zoom);\n\n const clippingBuffer: [number, number] = [256 / painter.width * 2 + 1, 256 / painter.height * 2 + 1];\n\n const dynamicLayoutVertexArray = isText ?\n bucket.text.dynamicLayoutVertexArray :\n bucket.icon.dynamicLayoutVertexArray;\n dynamicLayoutVertexArray.clear();\n\n const lineVertexArray = bucket.lineVertexArray;\n const placedSymbols = isText ? bucket.text.placedSymbolArray : bucket.icon.placedSymbolArray;\n\n const aspectRatio = painter.transform.width / painter.transform.height;\n\n let useVertical = false;\n\n for (let s = 0; s < placedSymbols.length; s++) {\n const symbol = placedSymbols.get(s);\n\n // Don't do calculations for vertical glyphs unless the previous symbol was horizontal\n // and we determined that vertical glyphs were necessary.\n // Also don't do calculations for symbols that are collided and fully faded out\n if (symbol.hidden || symbol.writingMode === WritingMode.vertical && !useVertical) {\n hideGlyphs(symbol.numGlyphs, dynamicLayoutVertexArray);\n continue;\n }\n // Awkward... but we're counting on the paired \"vertical\" symbol coming immediately after its horizontal counterpart\n useVertical = false;\n\n const tileAnchorPoint = new Point(symbol.anchorX, symbol.anchorY);\n const projectionCache: ProjectionCache = {projections: {}, offsets: {}, cachedAnchorPoint: undefined, anyProjectionOccluded: false};\n\n const projectionContext: SymbolProjectionContext = {\n getElevation,\n pitchedLabelPlaneMatrix,\n lineVertexArray,\n pitchWithMap,\n projectionCache,\n transform: painter.transform,\n tileAnchorPoint,\n unwrappedTileID,\n width: viewportWidth,\n height: viewportHeight,\n translation\n };\n\n const anchorPos = projectTileCoordinatesToClipSpace(symbol.anchorX, symbol.anchorY, projectionContext);\n\n // Don't bother calculating the correct point for invisible labels.\n if (!isVisible(anchorPos.point, clippingBuffer)) {\n hideGlyphs(symbol.numGlyphs, dynamicLayoutVertexArray);\n continue;\n }\n\n const cameraToAnchorDistance = anchorPos.signedDistanceFromCamera;\n const perspectiveRatio = getPerspectiveRatio(painter.transform.cameraToCenterDistance, cameraToAnchorDistance);\n\n const fontSize = symbolSize.evaluateSizeForFeature(sizeData, partiallyEvaluatedSize, symbol);\n const pitchScaledFontSize = pitchWithMap ? (fontSize * painter.transform.getPitchedTextCorrection(symbol.anchorX, symbol.anchorY, unwrappedTileID) / perspectiveRatio) : fontSize * perspectiveRatio;\n\n const placeUnflipped = placeGlyphsAlongLine({\n projectionContext,\n pitchedLabelPlaneMatrixInverse,\n symbol,\n fontSize: pitchScaledFontSize,\n flip: false,\n keepUpright,\n glyphOffsetArray: bucket.glyphOffsetArray,\n dynamicLayoutVertexArray,\n aspectRatio,\n rotateToLine,\n });\n\n useVertical = placeUnflipped.useVertical;\n\n if (placeUnflipped.notEnoughRoom || useVertical ||\n (placeUnflipped.needsFlipping &&\n placeGlyphsAlongLine({\n projectionContext,\n pitchedLabelPlaneMatrixInverse,\n symbol,\n fontSize: pitchScaledFontSize,\n flip: true, // flipped\n keepUpright,\n glyphOffsetArray: bucket.glyphOffsetArray,\n dynamicLayoutVertexArray,\n aspectRatio,\n rotateToLine,\n }).notEnoughRoom)) {\n hideGlyphs(symbol.numGlyphs, dynamicLayoutVertexArray);\n }\n }\n\n if (isText) {\n bucket.text.dynamicLayoutVertexBuffer.updateData(dynamicLayoutVertexArray);\n } else {\n bucket.icon.dynamicLayoutVertexBuffer.updateData(dynamicLayoutVertexArray);\n }\n}\n\ntype FirstAndLastGlyphPlacement = {\n first: PlacedGlyph;\n last: PlacedGlyph;\n} | null;\n\n/*\n * Place the first and last glyph of a line label, projected to the label plane.\n * This function is called both during collision detection (to determine the label's size)\n * and during line label rendering (to make sure the label fits on the line geometry with\n * the current camera position, which may differ from the position used during collision detection).\n *\n * Calling this function has the effect of populating the \"projectionCache\" with all projected\n * vertex locations the label will need, making future calls to placeGlyphAlongLine (for all the\n * intermediate glyphs) much cheaper.\n *\n * Returns null if the label can't fit on the geometry\n */\nexport function placeFirstAndLastGlyph(\n fontScale: number,\n glyphOffsetArray: GlyphOffsetArray,\n lineOffsetX: number,\n lineOffsetY: number,\n flip: boolean,\n symbol: any,\n rotateToLine: boolean,\n projectionContext: SymbolProjectionContext): FirstAndLastGlyphPlacement {\n const glyphEndIndex = symbol.glyphStartIndex + symbol.numGlyphs;\n const lineStartIndex = symbol.lineStartIndex;\n const lineEndIndex = symbol.lineStartIndex + symbol.lineLength;\n\n const firstGlyphOffset = glyphOffsetArray.getoffsetX(symbol.glyphStartIndex);\n const lastGlyphOffset = glyphOffsetArray.getoffsetX(glyphEndIndex - 1);\n\n const firstPlacedGlyph = placeGlyphAlongLine(fontScale * firstGlyphOffset, lineOffsetX, lineOffsetY, flip, symbol.segment,\n lineStartIndex, lineEndIndex, projectionContext, rotateToLine);\n if (!firstPlacedGlyph)\n return null;\n\n const lastPlacedGlyph = placeGlyphAlongLine(fontScale * lastGlyphOffset, lineOffsetX, lineOffsetY, flip, symbol.segment,\n lineStartIndex, lineEndIndex, projectionContext, rotateToLine);\n if (!lastPlacedGlyph)\n return null;\n\n if (projectionContext.projectionCache.anyProjectionOccluded) {\n return null;\n }\n\n return {first: firstPlacedGlyph, last: lastPlacedGlyph};\n}\n\ntype OrientationChangeType = {\n useVertical?: boolean;\n needsFlipping?: boolean;\n};\n\nfunction requiresOrientationChange(writingMode, firstPoint, lastPoint, aspectRatio): OrientationChangeType {\n if (writingMode === WritingMode.horizontal) {\n // On top of choosing whether to flip, choose whether to render this version of the glyphs or the alternate\n // vertical glyphs. We can't just filter out vertical glyphs in the horizontal range because the horizontal\n // and vertical versions can have slightly different projections which could lead to angles where both or\n // neither showed.\n const rise = Math.abs(lastPoint.y - firstPoint.y);\n const run = Math.abs(lastPoint.x - firstPoint.x) * aspectRatio;\n if (rise > run) {\n return {useVertical: true};\n }\n }\n\n if (writingMode === WritingMode.vertical ? firstPoint.y < lastPoint.y : firstPoint.x > lastPoint.x) {\n // Includes \"horizontalOnly\" case for labels without vertical glyphs\n return {needsFlipping: true};\n }\n\n return null;\n}\n\ntype GlyphLinePlacementResult = OrientationChangeType & {\n notEnoughRoom?: boolean;\n}\n\ntype GlyphLinePlacementArgs = {\n projectionContext: SymbolProjectionContext;\n pitchedLabelPlaneMatrixInverse: mat4;\n symbol: any; // PlacedSymbolStruct\n fontSize: number;\n flip: boolean;\n keepUpright: boolean;\n glyphOffsetArray: GlyphOffsetArray;\n dynamicLayoutVertexArray: StructArray;\n aspectRatio: number;\n rotateToLine: boolean;\n}\n\n/*\n* Place first and last glyph along the line projected to label plane, and if they fit\n* iterate through all the intermediate glyphs, calculating their label plane positions\n* from the projected line.\n*\n* Finally, add resulting glyph position calculations to dynamicLayoutVertexArray for\n* upload to the GPU\n*/\nfunction placeGlyphsAlongLine(args: GlyphLinePlacementArgs): GlyphLinePlacementResult {\n const {\n projectionContext,\n pitchedLabelPlaneMatrixInverse,\n symbol,\n fontSize,\n flip,\n keepUpright,\n glyphOffsetArray,\n dynamicLayoutVertexArray,\n aspectRatio,\n rotateToLine\n } = args;\n\n const fontScale = fontSize / 24;\n const lineOffsetX = symbol.lineOffsetX * fontScale;\n const lineOffsetY = symbol.lineOffsetY * fontScale;\n\n let placedGlyphs;\n if (symbol.numGlyphs > 1) {\n const glyphEndIndex = symbol.glyphStartIndex + symbol.numGlyphs;\n const lineStartIndex = symbol.lineStartIndex;\n const lineEndIndex = symbol.lineStartIndex + symbol.lineLength;\n\n // Place the first and the last glyph in the label first, so we can figure out\n // the overall orientation of the label and determine whether it needs to be flipped in keepUpright mode\n // Note: these glyphs are placed onto the label plane\n const firstAndLastGlyph = placeFirstAndLastGlyph(fontScale, glyphOffsetArray, lineOffsetX, lineOffsetY, flip, symbol, rotateToLine, projectionContext);\n if (!firstAndLastGlyph) {\n return {notEnoughRoom: true};\n }\n const firstPoint = projectFromLabelPlaneToClipSpace(firstAndLastGlyph.first.point.x, firstAndLastGlyph.first.point.y, projectionContext, pitchedLabelPlaneMatrixInverse);\n const lastPoint = projectFromLabelPlaneToClipSpace(firstAndLastGlyph.last.point.x, firstAndLastGlyph.last.point.y, projectionContext, pitchedLabelPlaneMatrixInverse);\n\n if (keepUpright && !flip) {\n const orientationChange = requiresOrientationChange(symbol.writingMode, firstPoint, lastPoint, aspectRatio);\n if (orientationChange) {\n return orientationChange;\n }\n }\n\n placedGlyphs = [firstAndLastGlyph.first];\n for (let glyphIndex = symbol.glyphStartIndex + 1; glyphIndex < glyphEndIndex - 1; glyphIndex++) {\n // Since first and last glyph fit on the line, we're sure that the rest of the glyphs can be placed\n placedGlyphs.push(placeGlyphAlongLine(fontScale * glyphOffsetArray.getoffsetX(glyphIndex), lineOffsetX, lineOffsetY, flip, symbol.segment,\n lineStartIndex, lineEndIndex, projectionContext, rotateToLine));\n }\n placedGlyphs.push(firstAndLastGlyph.last);\n } else {\n // Only a single glyph to place\n // So, determine whether to flip based on projected angle of the line segment it's on\n if (keepUpright && !flip) {\n const a = projectTileCoordinatesToLabelPlane(projectionContext.tileAnchorPoint.x, projectionContext.tileAnchorPoint.y, projectionContext).point;\n const tileVertexIndex = (symbol.lineStartIndex + symbol.segment + 1);\n const tileSegmentEnd = new Point(projectionContext.lineVertexArray.getx(tileVertexIndex), projectionContext.lineVertexArray.gety(tileVertexIndex));\n const projectedVertex = projectTileCoordinatesToLabelPlane(tileSegmentEnd.x, tileSegmentEnd.y, projectionContext);\n // We know the anchor will be in the viewport, but the end of the line segment may be\n // behind the plane of the camera, in which case we can use a point at any arbitrary (closer)\n // point on the segment.\n const b = (projectedVertex.signedDistanceFromCamera > 0) ?\n projectedVertex.point :\n projectTruncatedLineSegmentToLabelPlane(projectionContext.tileAnchorPoint, tileSegmentEnd, a, 1, projectionContext);\n\n const clipSpaceA = projectFromLabelPlaneToClipSpace(a.x, a.y, projectionContext, pitchedLabelPlaneMatrixInverse);\n const clipSpaceB = projectFromLabelPlaneToClipSpace(b.x, b.y, projectionContext, pitchedLabelPlaneMatrixInverse);\n\n const orientationChange = requiresOrientationChange(symbol.writingMode, clipSpaceA, clipSpaceB, aspectRatio);\n if (orientationChange) {\n return orientationChange;\n }\n }\n const singleGlyph = placeGlyphAlongLine(fontScale * glyphOffsetArray.getoffsetX(symbol.glyphStartIndex), lineOffsetX, lineOffsetY, flip, symbol.segment,\n symbol.lineStartIndex, symbol.lineStartIndex + symbol.lineLength, projectionContext, rotateToLine);\n if (!singleGlyph || projectionContext.projectionCache.anyProjectionOccluded)\n return {notEnoughRoom: true};\n\n placedGlyphs = [singleGlyph];\n }\n\n for (const glyph of placedGlyphs) {\n addDynamicAttributes(dynamicLayoutVertexArray, glyph.point, glyph.angle);\n }\n return {};\n}\n\n/**\n * Takes a line and direction from `previousTilePoint` to `currentTilePoint`, projects it to the correct label plane,\n * and returns a projected point along this projected line that is `minimumLength` distance away from `previousProjectedPoint`.\n * Projects a \"virtual\" vertex along a line segment.\n * @param previousTilePoint - Line start point, in tile coordinates.\n * @param currentTilePoint - Line end point, in tile coordinates.\n * @param previousProjectedPoint - Projection of `previousTilePoint` into label plane\n * @param minimumLength - Distance in the projected space along the line for the returned point.\n * @param projectionContext - Projection context, used to get terrain's `getElevation`, and to project the points to screen pixels.\n */\nfunction projectTruncatedLineSegmentToLabelPlane(previousTilePoint: Point, currentTilePoint: Point, previousProjectedPoint: Point, minimumLength: number, projectionContext: SymbolProjectionContext) {\n // We are assuming \"previousTilePoint\" won't project to a point within one unit of the camera plane\n // If it did, that would mean our label extended all the way out from within the viewport to a (very distant)\n // point near the plane of the camera. We wouldn't be able to render the label anyway once it crossed the\n // plane of the camera.\n const unitVertexToBeProjected = previousTilePoint.add(previousTilePoint.sub(currentTilePoint)._unit());\n const projectedUnitVertex = projectTileCoordinatesToLabelPlane(unitVertexToBeProjected.x, unitVertexToBeProjected.y, projectionContext).point;\n const projectedUnitSegment = previousProjectedPoint.sub(projectedUnitVertex);\n return previousProjectedPoint.add(projectedUnitSegment._mult(minimumLength / projectedUnitSegment.mag()));\n}\n\ntype IndexToPointCache = { [lineIndex: number]: Point };\n\n/**\n * @internal\n * We calculate label-plane projected points for line vertices as we place glyphs along the line\n * Since we will use the same vertices for potentially many glyphs, cache the results for this bucket\n * over the course of the render. Each vertex location also potentially has one offset equivalent\n * for us to hold onto. The vertex indices are per-symbol-bucket.\n */\ntype ProjectionCache = {\n /**\n * tile-unit vertices projected into label-plane units\n */\n projections: IndexToPointCache;\n /**\n * label-plane vertices which have been shifted to follow an offset line\n */\n offsets: IndexToPointCache;\n /**\n * Cached projected anchor point.\n */\n cachedAnchorPoint: Point | undefined;\n /**\n * Was any projected point occluded by the map itself (eg. occluded by the planet when using globe projection).\n *\n * Viewport-pitched line-following texts where *any* of the line points is hidden behind the planet curve becomes entirely hidden.\n * This is perhaps not the most ideal behavior, but it works, it is simple and planetary-scale texts such as this seem to be a rare edge case.\n */\n anyProjectionOccluded: boolean;\n};\n\n/**\n * @internal\n * Arguments necessary to project a vertex to the label plane\n */\nexport type SymbolProjectionContext = {\n /**\n * Used to cache results, save cost if projecting the same vertex multiple times\n */\n projectionCache: ProjectionCache;\n /**\n * The array of tile-unit vertices transferred from worker\n */\n lineVertexArray: SymbolLineVertexArray;\n /**\n * Matrix for transforming from pixels (symbol shaping) to potentially rotated tile units (pitched map label plane).\n */\n pitchedLabelPlaneMatrix: mat4;\n /**\n * Function to get elevation at a point\n * @param x - the x coordinate\n * @param y - the y coordinate\n */\n getElevation: (x: number, y: number) => number;\n /**\n * Only for creating synthetic vertices if vertex would otherwise project behind plane of camera,\n * but still convenient to pass it inside this type.\n */\n tileAnchorPoint: Point;\n /**\n * True when line glyphs are projected onto the map, instead of onto the viewport.\n */\n pitchWithMap: boolean;\n transform: IReadonlyTransform;\n unwrappedTileID: UnwrappedTileID;\n /**\n * Viewport width.\n */\n width: number;\n /**\n * Viewport height.\n */\n height: number;\n /**\n * Translation in tile units, computed using text-translate and text-translate-anchor paint style properties.\n */\n translation: [number, number];\n};\n\n/**\n * Only for creating synthetic vertices if vertex would otherwise project behind plane of camera\n */\nexport type ProjectionSyntheticVertexArgs = {\n distanceFromAnchor: number;\n previousVertex: Point;\n direction: number;\n absOffsetX: number;\n};\n\n/**\n * Transform a vertex from tile coordinates to label plane coordinates\n * @param index - index of vertex to project\n * @param projectionContext - necessary data to project a vertex\n * @returns the vertex projected to the label plane\n */\nexport function projectLineVertexToLabelPlane(index: number, projectionContext: SymbolProjectionContext, syntheticVertexArgs: ProjectionSyntheticVertexArgs): Point {\n const cache = projectionContext.projectionCache;\n\n if (cache.projections[index]) {\n return cache.projections[index];\n }\n const currentVertex = new Point(\n projectionContext.lineVertexArray.getx(index),\n projectionContext.lineVertexArray.gety(index));\n\n const projection = projectTileCoordinatesToLabelPlane(currentVertex.x, currentVertex.y, projectionContext);\n\n if (projection.signedDistanceFromCamera > 0) {\n cache.projections[index] = projection.point;\n cache.anyProjectionOccluded = cache.anyProjectionOccluded || projection.isOccluded;\n return projection.point;\n }\n\n // The vertex is behind the plane of the camera, so we can't project it\n // Instead, we'll create a vertex along the line that's far enough to include the glyph\n const previousLineVertexIndex = index - syntheticVertexArgs.direction;\n const previousTilePoint = syntheticVertexArgs.distanceFromAnchor === 0 ?\n projectionContext.tileAnchorPoint :\n new Point(projectionContext.lineVertexArray.getx(previousLineVertexIndex), projectionContext.lineVertexArray.gety(previousLineVertexIndex));\n\n // Don't cache because the new vertex might not be far enough out for future glyphs on the same segment\n const minimumLength = syntheticVertexArgs.absOffsetX - syntheticVertexArgs.distanceFromAnchor + 1;\n return projectTruncatedLineSegmentToLabelPlane(previousTilePoint, currentVertex, syntheticVertexArgs.previousVertex, minimumLength, projectionContext);\n}\n\n/**\n * Projects the given point in tile coordinates to the correct label plane.\n * If pitchWithMap is true, the (rotated) map plane in pixels is used,\n * otherwise screen pixels are used.\n */\nexport function projectTileCoordinatesToLabelPlane(x: number, y: number, projectionContext: SymbolProjectionContext): PointProjection {\n const translatedX = x + projectionContext.translation[0];\n const translatedY = y + projectionContext.translation[1];\n let projection;\n if (projectionContext.pitchWithMap) {\n projection = projectWithMatrix(translatedX, translatedY, projectionContext.pitchedLabelPlaneMatrix, projectionContext.getElevation);\n projection.isOccluded = false;\n } else {\n projection = projectionContext.transform.projectTileCoordinates(translatedX, translatedY, projectionContext.unwrappedTileID, projectionContext.getElevation);\n projection.point.x = (projection.point.x * 0.5 + 0.5) * projectionContext.width;\n projection.point.y = (-projection.point.y * 0.5 + 0.5) * projectionContext.height;\n }\n return projection;\n}\n\nfunction projectFromLabelPlaneToClipSpace(x: number, y: number, projectionContext: SymbolProjectionContext, pitchedLabelPlaneMatrixInverse: mat4): {x: number; y: number} {\n if (projectionContext.pitchWithMap) {\n const pos = [x, y, 0, 1] as vec4;\n vec4.transformMat4(pos, pos, pitchedLabelPlaneMatrixInverse);\n return projectionContext.transform.projectTileCoordinates(pos[0] / pos[3], pos[1] / pos[3], projectionContext.unwrappedTileID, projectionContext.getElevation).point;\n } else {\n return {\n x: (x / projectionContext.width) * 2.0 - 1.0,\n y: (y / projectionContext.height) * 2.0 - 1.0\n };\n }\n}\n\n/**\n * Projects the given point in tile coordinates to the GL clip space (-1..1).\n */\nexport function projectTileCoordinatesToClipSpace(x: number, y: number, projectionContext: SymbolProjectionContext): PointProjection {\n const projection = projectionContext.transform.projectTileCoordinates(x, y, projectionContext.unwrappedTileID, projectionContext.getElevation);\n return projection;\n}\n\n/**\n * Calculate the normal vector for a line segment\n * @param segmentVector - will be mutated as a tiny optimization\n * @param offset - magnitude of resulting vector\n * @param direction - direction of line traversal\n * @returns a normal vector from the segment, with magnitude equal to offset amount\n */\nexport function transformToOffsetNormal(segmentVector: Point, offset: number, direction: number): Point {\n return segmentVector._unit()._perp()._mult(offset * direction);\n}\n\n/**\n * Construct offset line segments for the current segment and the next segment, then extend/shrink\n * the segments until they intersect. If the segments are parallel, then they will touch with no modification.\n *\n * @param index - Index of the current vertex\n * @param prevToCurrentOffsetNormal - Normal vector of the line segment from the previous vertex to the current vertex\n * @param currentVertex - Current (non-offset) vertex projected to the label plane\n * @param lineStartIndex - Beginning index for the line this label is on\n * @param lineEndIndex - End index for the line this label is on\n * @param offsetPreviousVertex - The previous vertex projected to the label plane, and then offset along the previous segments normal\n * @param lineOffsetY - Magnitude of the offset\n * @param projectionContext - Necessary data for tile-to-label-plane projection\n * @returns The point at which the current and next line segments intersect, once offset and extended/shrunk to their meeting point\n */\nexport function findOffsetIntersectionPoint(\n index: number,\n prevToCurrentOffsetNormal: Point,\n currentVertex: Point,\n lineStartIndex: number,\n lineEndIndex: number,\n offsetPreviousVertex: Point,\n lineOffsetY: number,\n projectionContext: SymbolProjectionContext,\n syntheticVertexArgs: ProjectionSyntheticVertexArgs) {\n if (projectionContext.projectionCache.offsets[index]) {\n return projectionContext.projectionCache.offsets[index];\n }\n\n const offsetCurrentVertex = currentVertex.add(prevToCurrentOffsetNormal);\n\n if (index + syntheticVertexArgs.direction < lineStartIndex || index + syntheticVertexArgs.direction >= lineEndIndex) {\n // This is the end of the line, no intersection to calculate\n projectionContext.projectionCache.offsets[index] = offsetCurrentVertex;\n return offsetCurrentVertex;\n }\n // Offset the vertices for the next segment\n const nextVertex = projectLineVertexToLabelPlane(index + syntheticVertexArgs.direction, projectionContext, syntheticVertexArgs);\n const currentToNextOffsetNormal = transformToOffsetNormal(nextVertex.sub(currentVertex), lineOffsetY, syntheticVertexArgs.direction);\n const offsetNextSegmentBegin = currentVertex.add(currentToNextOffsetNormal);\n const offsetNextSegmentEnd = nextVertex.add(currentToNextOffsetNormal);\n\n // find the intersection of these two lines\n // if the lines are parallel, offsetCurrent/offsetNextBegin will touch\n projectionContext.projectionCache.offsets[index] = findLineIntersection(offsetPreviousVertex, offsetCurrentVertex, offsetNextSegmentBegin, offsetNextSegmentEnd) || offsetCurrentVertex;\n\n return projectionContext.projectionCache.offsets[index];\n}\n\n/**\n * Placed Glyph type\n */\ntype PlacedGlyph = {\n /**\n * The point at which the glyph should be placed, in label plane coordinates\n */\n point: Point;\n /**\n * The angle at which the glyph should be placed\n */\n angle: number;\n /**\n * The label-plane path used to reach this glyph: used only for collision detection\n */\n path: Array;\n};\n\n/*\n * Place a single glyph along its line, projected into the label plane, by iterating outward\n * from the anchor point until the distance traversed in the label plane equals the glyph's\n * offsetX. Returns null if the glyph can't fit on the line geometry.\n */\nexport function placeGlyphAlongLine(\n offsetX: number,\n lineOffsetX: number,\n lineOffsetY: number,\n flip: boolean,\n anchorSegment: number,\n lineStartIndex: number,\n lineEndIndex: number,\n projectionContext: SymbolProjectionContext,\n rotateToLine: boolean): PlacedGlyph | null {\n\n const combinedOffsetX = flip ?\n offsetX - lineOffsetX :\n offsetX + lineOffsetX;\n\n let direction = combinedOffsetX > 0 ? 1 : -1;\n\n let angle = 0;\n if (flip) {\n // The label needs to be flipped to keep text upright.\n // Iterate in the reverse direction.\n direction *= -1;\n angle = Math.PI;\n }\n\n if (direction < 0) angle += Math.PI;\n\n let currentIndex = direction > 0 ?\n lineStartIndex + anchorSegment :\n lineStartIndex + anchorSegment + 1;\n\n // Project anchor point to viewport and cache it\n let anchorPoint: Point;\n\n if (projectionContext.projectionCache.cachedAnchorPoint) {\n anchorPoint = projectionContext.projectionCache.cachedAnchorPoint;\n } else {\n anchorPoint = projectTileCoordinatesToLabelPlane(projectionContext.tileAnchorPoint.x, projectionContext.tileAnchorPoint.y, projectionContext).point;\n projectionContext.projectionCache.cachedAnchorPoint = anchorPoint;\n }\n\n let currentVertex = anchorPoint;\n let previousVertex = anchorPoint;\n\n // offsetPrev and intersectionPoint are analogous to previousVertex and currentVertex\n // but if there's a line offset they are calculated in parallel as projection happens\n let offsetIntersectionPoint: Point;\n let offsetPreviousVertex: Point;\n\n let distanceFromAnchor = 0;\n let currentSegmentDistance = 0;\n const absOffsetX = Math.abs(combinedOffsetX);\n const pathVertices: Array = [];\n\n let currentLineSegment: Point;\n while (distanceFromAnchor + currentSegmentDistance <= absOffsetX) {\n currentIndex += direction;\n\n // offset does not fit on the projected line\n if (currentIndex < lineStartIndex || currentIndex >= lineEndIndex)\n return null;\n\n // accumulate values from last iteration\n distanceFromAnchor += currentSegmentDistance;\n previousVertex = currentVertex;\n offsetPreviousVertex = offsetIntersectionPoint;\n\n const syntheticVertexArgs: ProjectionSyntheticVertexArgs = {\n absOffsetX,\n direction,\n distanceFromAnchor,\n previousVertex\n };\n\n // find next vertex in viewport space\n currentVertex = projectLineVertexToLabelPlane(currentIndex, projectionContext, syntheticVertexArgs);\n if (lineOffsetY === 0) {\n // Store vertices for collision detection and update current segment geometry\n pathVertices.push(previousVertex);\n currentLineSegment = currentVertex.sub(previousVertex);\n } else {\n // Calculate the offset for this section\n let prevToCurrentOffsetNormal;\n const prevToCurrent = currentVertex.sub(previousVertex);\n if (prevToCurrent.mag() === 0) {\n // We are starting with our anchor point directly on the vertex, so look one vertex ahead\n // to calculate a normal\n const nextVertex = projectLineVertexToLabelPlane(currentIndex + direction, projectionContext, syntheticVertexArgs);\n prevToCurrentOffsetNormal = transformToOffsetNormal(nextVertex.sub(currentVertex), lineOffsetY, direction);\n } else {\n prevToCurrentOffsetNormal = transformToOffsetNormal(prevToCurrent, lineOffsetY, direction);\n }\n // Initialize offsetPrev on our first iteration, after that it will be pre-calculated\n if (!offsetPreviousVertex)\n offsetPreviousVertex = previousVertex.add(prevToCurrentOffsetNormal);\n\n offsetIntersectionPoint = findOffsetIntersectionPoint(currentIndex, prevToCurrentOffsetNormal, currentVertex, lineStartIndex, lineEndIndex, offsetPreviousVertex, lineOffsetY, projectionContext, syntheticVertexArgs);\n\n pathVertices.push(offsetPreviousVertex);\n currentLineSegment = offsetIntersectionPoint.sub(offsetPreviousVertex);\n }\n currentSegmentDistance = currentLineSegment.mag();\n }\n\n // The point is on the current segment. Interpolate to find it.\n const segmentInterpolationT = (absOffsetX - distanceFromAnchor) / currentSegmentDistance;\n const p = currentLineSegment._mult(segmentInterpolationT)._add(offsetPreviousVertex || previousVertex);\n\n const segmentAngle = angle + Math.atan2(currentVertex.y - previousVertex.y, currentVertex.x - previousVertex.x);\n\n pathVertices.push(p);\n\n return {\n point: p,\n angle: rotateToLine ? segmentAngle : 0.0,\n path: pathVertices\n };\n}\n\nconst hiddenGlyphAttributes = new Float32Array([-Infinity, -Infinity, 0, -Infinity, -Infinity, 0, -Infinity, -Infinity, 0, -Infinity, -Infinity, 0]);\n\n// Hide them by moving them offscreen. We still need to add them to the buffer\n// because the dynamic buffer is paired with a static buffer that doesn't get updated.\nexport function hideGlyphs(num: number, dynamicLayoutVertexArray: SymbolDynamicLayoutArray) {\n for (let i = 0; i < num; i++) {\n const offset = dynamicLayoutVertexArray.length;\n dynamicLayoutVertexArray.resize(offset + 4);\n // Since all hidden glyphs have the same attributes, we can build up the array faster with a single call to Float32Array.set\n // for each set of four vertices, instead of calling addDynamicAttributes for each vertex.\n dynamicLayoutVertexArray.float32.set(hiddenGlyphAttributes, offset * 3);\n }\n}\n\n// For line label layout, we're not using z output and our w input is always 1\n// This custom matrix transformation ignores those components to make projection faster\nexport function xyTransformMat4(out: vec4, a: vec4, m: mat4) {\n const x = a[0], y = a[1];\n out[0] = m[0] * x + m[4] * y + m[12];\n out[1] = m[1] * x + m[5] * y + m[13];\n out[3] = m[3] * x + m[7] * y + m[15];\n return out;\n}\n\n/**\n * Takes a path of points that was previously projected using the `pitchedLabelPlaneMatrix`\n * and projects it using the map projection's (mercator/globe...) `projectTileCoordinates` function.\n * Returns a new array of the projected points.\n * Does not modify the input array.\n */\nexport function projectPathSpecialProjection(projectedPath: Array, projectionContext: SymbolProjectionContext): Array {\n const inverseLabelPlaneMatrix = mat4.create();\n mat4.invert(inverseLabelPlaneMatrix, projectionContext.pitchedLabelPlaneMatrix);\n return projectedPath.map(p => {\n const backProjected = projectWithMatrix(p.x, p.y, inverseLabelPlaneMatrix, projectionContext.getElevation);\n const projected = projectionContext.transform.projectTileCoordinates(\n backProjected.point.x,\n backProjected.point.y,\n projectionContext.unwrappedTileID,\n projectionContext.getElevation\n );\n projected.point.x = (projected.point.x * 0.5 + 0.5) * projectionContext.width;\n projected.point.y = (-projected.point.y * 0.5 + 0.5) * projectionContext.height;\n return projected;\n });\n}\n\n/**\n * Takes a path of points projected to screenspace, finds the longest continuous unoccluded segment of that path\n * and returns it.\n * Does not modify the input array.\n */\nexport function pathSlicedToLongestUnoccluded(path: Array): Array {\n let longestUnoccludedStart = 0;\n let longestUnoccludedLength = 0;\n let currentUnoccludedStart = 0;\n let currentUnoccludedLength = 0;\n for (let i = 0; i < path.length; i++) {\n if (path[i].isOccluded) {\n currentUnoccludedStart = i + 1;\n currentUnoccludedLength = 0;\n } else {\n currentUnoccludedLength++;\n if (currentUnoccludedLength > longestUnoccludedLength) {\n longestUnoccludedLength = currentUnoccludedLength;\n longestUnoccludedStart = currentUnoccludedStart;\n }\n }\n }\n return path.slice(longestUnoccludedStart, longestUnoccludedStart + longestUnoccludedLength);\n}\n","import Point from '@mapbox/point-geometry';\nimport {clipLine} from './clip_line';\nimport {PathInterpolator} from './path_interpolator';\n\nimport * as intersectionTests from '../util/intersection_tests';\nimport {GridIndex} from './grid_index';\nimport {mat4, vec4} from 'gl-matrix';\nimport ONE_EM from '../symbol/one_em';\n\nimport type {IReadonlyTransform} from '../geo/transform_interface';\nimport type {SingleCollisionBox} from '../data/bucket/symbol_bucket';\nimport type {\n GlyphOffsetArray,\n SymbolLineVertexArray\n} from '../data/array_types.g';\nimport type {OverlapMode} from '../style/style_layer/overlap_mode';\nimport {type OverscaledTileID, type UnwrappedTileID} from '../source/tile_id';\nimport {type PointProjection, type SymbolProjectionContext, getTileSkewVectors, pathSlicedToLongestUnoccluded, placeFirstAndLastGlyph, projectPathSpecialProjection, xyTransformMat4} from '../symbol/projection';\nimport {clamp, getAABB} from '../util/util';\n\n// When a symbol crosses the edge that causes it to be included in\n// collision detection, it will cause changes in the symbols around\n// it. This constant specifies how many pixels to pad the edge of\n// the viewport for collision detection so that the bulk of the changes\n// occur offscreen. Making this constant greater increases label\n// stability, but it's expensive.\nexport const viewportPadding = 100;\n\nexport type PlacedCircles = {\n circles: Array;\n offscreen: boolean;\n collisionDetected: boolean;\n};\n\nexport type PlacedBox = {\n box: Array;\n placeable: boolean;\n offscreen: boolean;\n occluded: boolean;\n};\n\nexport type FeatureKey = {\n bucketInstanceId: number;\n featureIndex: number;\n collisionGroupID: number;\n overlapMode: OverlapMode;\n};\n\ntype ProjectedBox = {\n /**\n * The AABB in the format [minX, minY, maxX, maxY].\n */\n box: [number, number, number, number];\n allPointsOccluded: boolean;\n};\n\n/**\n * @internal\n * A collision index used to prevent symbols from overlapping. It keep tracks of\n * where previous symbols have been placed and is used to check if a new\n * symbol overlaps with any previously added symbols.\n *\n * There are two steps to insertion: first placeCollisionBox/Circles checks if\n * there's room for a symbol, then insertCollisionBox/Circles actually puts the\n * symbol in the index. The two step process allows paired symbols to be inserted\n * together even if they overlap.\n */\nexport class CollisionIndex {\n grid: GridIndex;\n ignoredGrid: GridIndex;\n transform: IReadonlyTransform;\n pitchFactor: number;\n screenRightBoundary: number;\n screenBottomBoundary: number;\n gridRightBoundary: number;\n gridBottomBoundary: number;\n\n // With perspectiveRatio the fontsize is calculated for tilted maps (near = bigger, far = smaller).\n // The cutoff defines a threshold to no longer render labels near the horizon.\n perspectiveRatioCutoff: number;\n\n constructor(\n transform: IReadonlyTransform,\n grid = new GridIndex(transform.width + 2 * viewportPadding, transform.height + 2 * viewportPadding, 25),\n ignoredGrid = new GridIndex(transform.width + 2 * viewportPadding, transform.height + 2 * viewportPadding, 25)\n ) {\n this.transform = transform;\n\n this.grid = grid;\n this.ignoredGrid = ignoredGrid;\n this.pitchFactor = Math.cos(transform.pitch * Math.PI / 180.0) * transform.cameraToCenterDistance;\n\n this.screenRightBoundary = transform.width + viewportPadding;\n this.screenBottomBoundary = transform.height + viewportPadding;\n this.gridRightBoundary = transform.width + 2 * viewportPadding;\n this.gridBottomBoundary = transform.height + 2 * viewportPadding;\n\n this.perspectiveRatioCutoff = 0.6;\n }\n\n placeCollisionBox(\n collisionBox: SingleCollisionBox,\n overlapMode: OverlapMode,\n textPixelRatio: number,\n tileID: OverscaledTileID,\n unwrappedTileID: UnwrappedTileID,\n pitchWithMap: boolean,\n rotateWithMap: boolean,\n translation: [number, number],\n collisionGroupPredicate?: (key: FeatureKey) => boolean,\n getElevation?: (x: number, y: number) => number,\n shift?: Point,\n simpleProjectionMatrix?: mat4,\n ): PlacedBox {\n const x = collisionBox.anchorPointX + translation[0];\n const y = collisionBox.anchorPointY + translation[1];\n const projectedPoint = this.projectAndGetPerspectiveRatio(\n x,\n y,\n unwrappedTileID,\n getElevation,\n simpleProjectionMatrix\n );\n\n const tileToViewport = textPixelRatio * projectedPoint.perspectiveRatio;\n let projectedBox: ProjectedBox;\n\n if (!pitchWithMap && !rotateWithMap) {\n // Fast path for common symbols\n const pointX = projectedPoint.x + (shift ? shift.x * tileToViewport : 0);\n const pointY = projectedPoint.y + (shift ? shift.y * tileToViewport : 0);\n projectedBox = {\n allPointsOccluded: false,\n box: [\n pointX + collisionBox.x1 * tileToViewport,\n pointY + collisionBox.y1 * tileToViewport,\n pointX + collisionBox.x2 * tileToViewport,\n pointY + collisionBox.y2 * tileToViewport,\n ]\n };\n } else {\n projectedBox = this._projectCollisionBox(\n collisionBox,\n tileToViewport,\n tileID,\n unwrappedTileID,\n pitchWithMap,\n rotateWithMap,\n translation,\n projectedPoint,\n getElevation,\n shift,\n simpleProjectionMatrix,\n );\n }\n\n const [tlX, tlY, brX, brY] = projectedBox.box;\n\n // Conditions are ordered from the fastest to evaluate to the slowest.\n const occluded = pitchWithMap ? projectedBox.allPointsOccluded : projectedPoint.isOccluded;\n\n let unplaceable = occluded;\n unplaceable ||= projectedPoint.perspectiveRatio < this.perspectiveRatioCutoff;\n unplaceable ||= !this.isInsideGrid(tlX, tlY, brX, brY);\n\n if (unplaceable ||\n (overlapMode !== 'always' && this.grid.hitTest(tlX, tlY, brX, brY, overlapMode, collisionGroupPredicate))) {\n return {\n box: [tlX, tlY, brX, brY],\n placeable: false,\n offscreen: false,\n occluded\n };\n }\n\n return {\n box: [tlX, tlY, brX, brY],\n placeable: true,\n offscreen: this.isOffscreen(tlX, tlY, brX, brY),\n occluded\n };\n }\n\n placeCollisionCircles(\n overlapMode: OverlapMode,\n symbol: any,\n lineVertexArray: SymbolLineVertexArray,\n glyphOffsetArray: GlyphOffsetArray,\n fontSize: number,\n unwrappedTileID: UnwrappedTileID,\n pitchedLabelPlaneMatrix: mat4,\n showCollisionCircles: boolean,\n pitchWithMap: boolean,\n collisionGroupPredicate: (key: FeatureKey) => boolean,\n circlePixelDiameter: number,\n textPixelPadding: number,\n translation: [number, number],\n getElevation: (x: number, y: number) => number\n ): PlacedCircles {\n const placedCollisionCircles = [];\n\n const tileUnitAnchorPoint = new Point(symbol.anchorX, symbol.anchorY);\n const perspectiveRatio = this.getPerspectiveRatio(tileUnitAnchorPoint.x, tileUnitAnchorPoint.y, unwrappedTileID, getElevation);\n\n const labelPlaneFontSize = pitchWithMap ? (fontSize * this.transform.getPitchedTextCorrection(symbol.anchorX, symbol.anchorY, unwrappedTileID) / perspectiveRatio) : fontSize * perspectiveRatio;\n const labelPlaneFontScale = labelPlaneFontSize / ONE_EM;\n\n const projectionCache = {projections: {}, offsets: {}, cachedAnchorPoint: undefined, anyProjectionOccluded: false};\n const lineOffsetX = symbol.lineOffsetX * labelPlaneFontScale;\n const lineOffsetY = symbol.lineOffsetY * labelPlaneFontScale;\n\n const projectionContext: SymbolProjectionContext = {\n getElevation,\n pitchedLabelPlaneMatrix,\n lineVertexArray,\n pitchWithMap,\n projectionCache,\n transform: this.transform,\n tileAnchorPoint: tileUnitAnchorPoint,\n unwrappedTileID,\n width: this.transform.width,\n height: this.transform.height,\n translation\n };\n\n const firstAndLastGlyph = placeFirstAndLastGlyph(\n labelPlaneFontScale,\n glyphOffsetArray,\n lineOffsetX,\n lineOffsetY,\n /*flip*/ false,\n symbol,\n false,\n projectionContext);\n\n let collisionDetected = false;\n let inGrid = false;\n let entirelyOffscreen = true;\n\n if (firstAndLastGlyph) {\n const radius = circlePixelDiameter * 0.5 * perspectiveRatio + textPixelPadding;\n const screenPlaneMin = new Point(-viewportPadding, -viewportPadding);\n const screenPlaneMax = new Point(this.screenRightBoundary, this.screenBottomBoundary);\n const interpolator = new PathInterpolator();\n\n // Construct a projected path from projected line vertices. Anchor points are ignored and removed\n const first = firstAndLastGlyph.first;\n const last = firstAndLastGlyph.last;\n\n let projectedPath: Array = [];\n for (let i = first.path.length - 1; i >= 1; i--) {\n projectedPath.push(first.path[i]);\n }\n for (let i = 1; i < last.path.length; i++) {\n projectedPath.push(last.path[i]);\n }\n\n // Tolerate a slightly longer distance than one diameter between two adjacent circles\n const circleDist = radius * 2.5;\n\n // The path might need to be converted into screen space if a pitched map is used as the label space\n if (pitchWithMap) {\n const screenSpacePath = this.projectPathToScreenSpace(projectedPath, projectionContext);\n // Do not try to place collision circles if even one of the points is behind the camera.\n // This is a plausible scenario with big camera pitch angles\n if (screenSpacePath.some(point => point.signedDistanceFromCamera <= 0)) {\n projectedPath = [];\n } else {\n projectedPath = screenSpacePath.map(p => p.point);\n }\n }\n\n let segments = [];\n\n if (projectedPath.length > 0) {\n // Quickly check if the path is fully inside or outside of the padded collision region.\n // For overlapping paths we'll only create collision circles for the visible segments\n const minPoint = projectedPath[0].clone();\n const maxPoint = projectedPath[0].clone();\n\n for (let i = 1; i < projectedPath.length; i++) {\n minPoint.x = Math.min(minPoint.x, projectedPath[i].x);\n minPoint.y = Math.min(minPoint.y, projectedPath[i].y);\n maxPoint.x = Math.max(maxPoint.x, projectedPath[i].x);\n maxPoint.y = Math.max(maxPoint.y, projectedPath[i].y);\n }\n\n if (minPoint.x >= screenPlaneMin.x && maxPoint.x <= screenPlaneMax.x &&\n minPoint.y >= screenPlaneMin.y && maxPoint.y <= screenPlaneMax.y) {\n // Quad fully visible\n segments = [projectedPath];\n } else if (maxPoint.x < screenPlaneMin.x || minPoint.x > screenPlaneMax.x ||\n maxPoint.y < screenPlaneMin.y || minPoint.y > screenPlaneMax.y) {\n // Not visible\n segments = [];\n } else {\n segments = clipLine([projectedPath], screenPlaneMin.x, screenPlaneMin.y, screenPlaneMax.x, screenPlaneMax.y);\n }\n }\n\n for (const seg of segments) {\n // interpolate positions for collision circles. Add a small padding to both ends of the segment\n interpolator.reset(seg, radius * 0.25);\n\n let numCircles = 0;\n\n if (interpolator.length <= 0.5 * radius) {\n numCircles = 1;\n } else {\n numCircles = Math.ceil(interpolator.paddedLength / circleDist) + 1;\n }\n\n for (let i = 0; i < numCircles; i++) {\n const t = i / Math.max(numCircles - 1, 1);\n const circlePosition = interpolator.lerp(t);\n\n // add viewport padding to the position and perform initial collision check\n const centerX = circlePosition.x + viewportPadding;\n const centerY = circlePosition.y + viewportPadding;\n\n placedCollisionCircles.push(centerX, centerY, radius, 0);\n\n const x1 = centerX - radius;\n const y1 = centerY - radius;\n const x2 = centerX + radius;\n const y2 = centerY + radius;\n\n entirelyOffscreen = entirelyOffscreen && this.isOffscreen(x1, y1, x2, y2);\n inGrid = inGrid || this.isInsideGrid(x1, y1, x2, y2);\n\n if (overlapMode !== 'always' && this.grid.hitTestCircle(centerX, centerY, radius, overlapMode, collisionGroupPredicate)) {\n // Don't early exit if we're showing the debug circles because we still want to calculate\n // which circles are in use\n collisionDetected = true;\n if (!showCollisionCircles) {\n return {\n circles: [],\n offscreen: false,\n collisionDetected\n };\n }\n }\n }\n }\n }\n\n return {\n circles: ((!showCollisionCircles && collisionDetected) || !inGrid || perspectiveRatio < this.perspectiveRatioCutoff) ? [] : placedCollisionCircles,\n offscreen: entirelyOffscreen,\n collisionDetected\n };\n }\n\n projectPathToScreenSpace(projectedPath: Array, projectionContext: SymbolProjectionContext): Array {\n const screenSpacePath = projectPathSpecialProjection(projectedPath, projectionContext);\n // We don't want to generate screenspace collision circles for parts of the line that\n // are occluded by the planet itself. Find the longest segment of the path that is\n // not occluded, and remove everything else.\n return pathSlicedToLongestUnoccluded(screenSpacePath);\n }\n\n /**\n * Because the geometries in the CollisionIndex are an approximation of the shape of\n * symbols on the map, we use the CollisionIndex to look up the symbol part of\n * `queryRenderedFeatures`.\n */\n queryRenderedSymbols(viewportQueryGeometry: Array) {\n if (viewportQueryGeometry.length === 0 || (this.grid.keysLength() === 0 && this.ignoredGrid.keysLength() === 0)) {\n return {};\n }\n\n const query = [];\n let minX = Infinity;\n let minY = Infinity;\n let maxX = -Infinity;\n let maxY = -Infinity;\n for (const point of viewportQueryGeometry) {\n const gridPoint = new Point(point.x + viewportPadding, point.y + viewportPadding);\n minX = Math.min(minX, gridPoint.x);\n minY = Math.min(minY, gridPoint.y);\n maxX = Math.max(maxX, gridPoint.x);\n maxY = Math.max(maxY, gridPoint.y);\n query.push(gridPoint);\n }\n\n const features = this.grid.query(minX, minY, maxX, maxY)\n .concat(this.ignoredGrid.query(minX, minY, maxX, maxY));\n\n const seenFeatures = {};\n const result = {};\n\n for (const feature of features) {\n const featureKey = feature.key;\n // Skip already seen features.\n if (seenFeatures[featureKey.bucketInstanceId] === undefined) {\n seenFeatures[featureKey.bucketInstanceId] = {};\n }\n if (seenFeatures[featureKey.bucketInstanceId][featureKey.featureIndex]) {\n continue;\n }\n\n // Check if query intersects with the feature box\n // \"Collision Circles\" for line labels are treated as boxes here\n // Since there's no actual collision taking place, the circle vs. square\n // distinction doesn't matter as much, and box geometry is easier\n // to work with.\n const bbox = [\n new Point(feature.x1, feature.y1),\n new Point(feature.x2, feature.y1),\n new Point(feature.x2, feature.y2),\n new Point(feature.x1, feature.y2)\n ];\n if (!intersectionTests.polygonIntersectsPolygon(query, bbox)) {\n continue;\n }\n\n seenFeatures[featureKey.bucketInstanceId][featureKey.featureIndex] = true;\n if (result[featureKey.bucketInstanceId] === undefined) {\n result[featureKey.bucketInstanceId] = [];\n }\n result[featureKey.bucketInstanceId].push(featureKey.featureIndex);\n }\n\n return result;\n }\n\n insertCollisionBox(collisionBox: Array, overlapMode: OverlapMode, ignorePlacement: boolean, bucketInstanceId: number, featureIndex: number, collisionGroupID: number) {\n const grid = ignorePlacement ? this.ignoredGrid : this.grid;\n\n const key = {bucketInstanceId, featureIndex, collisionGroupID, overlapMode};\n grid.insert(key, collisionBox[0], collisionBox[1], collisionBox[2], collisionBox[3]);\n }\n\n insertCollisionCircles(collisionCircles: Array, overlapMode: OverlapMode, ignorePlacement: boolean, bucketInstanceId: number, featureIndex: number, collisionGroupID: number) {\n const grid = ignorePlacement ? this.ignoredGrid : this.grid;\n\n const key = {bucketInstanceId, featureIndex, collisionGroupID, overlapMode};\n for (let k = 0; k < collisionCircles.length; k += 4) {\n grid.insertCircle(key, collisionCircles[k], collisionCircles[k + 1], collisionCircles[k + 2]);\n }\n }\n\n projectAndGetPerspectiveRatio(x: number, y: number, unwrappedTileID: UnwrappedTileID, getElevation?: (x: number, y: number) => number, simpleProjectionMatrix?: mat4) {\n if (simpleProjectionMatrix) {\n // This branch is a fast-path for mercator transform.\n // The code here is a copy of MercatorTransform.projectTileCoordinates, slightly modified for extra performance.\n // This has a huge impact for some reason.\n let pos;\n if (getElevation) { // slow because of handle z-index\n pos = [x, y, getElevation(x, y), 1] as vec4;\n vec4.transformMat4(pos, pos, simpleProjectionMatrix);\n } else { // fast because of ignore z-index\n pos = [x, y, 0, 1] as vec4;\n xyTransformMat4(pos, pos, simpleProjectionMatrix);\n }\n const w = pos[3];\n return {\n x: (((pos[0] / w + 1) / 2) * this.transform.width) + viewportPadding,\n y: (((-pos[1] / w + 1) / 2) * this.transform.height) + viewportPadding,\n perspectiveRatio: 0.5 + 0.5 * (this.transform.cameraToCenterDistance / w),\n isOccluded: false,\n signedDistanceFromCamera: w\n };\n } else {\n const projected = this.transform.projectTileCoordinates(x, y, unwrappedTileID, getElevation);\n return {\n x: (((projected.point.x + 1) / 2) * this.transform.width) + viewportPadding,\n y: (((-projected.point.y + 1) / 2) * this.transform.height) + viewportPadding,\n // See perspective ratio comment in symbol_sdf.vertex\n // We're doing collision detection in viewport space so we need\n // to scale down boxes in the distance\n perspectiveRatio: 0.5 + 0.5 * (this.transform.cameraToCenterDistance / projected.signedDistanceFromCamera),\n isOccluded: projected.isOccluded,\n signedDistanceFromCamera: projected.signedDistanceFromCamera\n };\n }\n }\n\n getPerspectiveRatio(x: number, y: number, unwrappedTileID: UnwrappedTileID, getElevation?: (x: number, y: number) => number): number {\n // We don't care about the actual projected point, just its W component.\n const projected = this.transform.projectTileCoordinates(x, y, unwrappedTileID, getElevation);\n return 0.5 + 0.5 * (this.transform.cameraToCenterDistance / projected.signedDistanceFromCamera);\n }\n\n isOffscreen(x1: number, y1: number, x2: number, y2: number) {\n return x2 < viewportPadding || x1 >= this.screenRightBoundary || y2 < viewportPadding || y1 > this.screenBottomBoundary;\n }\n\n isInsideGrid(x1: number, y1: number, x2: number, y2: number) {\n return x2 >= 0 && x1 < this.gridRightBoundary && y2 >= 0 && y1 < this.gridBottomBoundary;\n }\n\n /*\n * Returns a matrix for transforming collision shapes to viewport coordinate space.\n * Use this function to render e.g. collision circles on the screen.\n * example transformation: clipPos = glCoordMatrix * viewportMatrix * circle_pos\n */\n getViewportMatrix() {\n const m = mat4.identity([] as any);\n mat4.translate(m, m, [-viewportPadding, -viewportPadding, 0.0]);\n return m;\n }\n\n /**\n * Applies all layout+paint properties of the given box in order to find as good approximation of its screen-space bounding box as possible.\n */\n private _projectCollisionBox(\n collisionBox: SingleCollisionBox,\n tileToViewport: number,\n tileID: OverscaledTileID,\n unwrappedTileID: UnwrappedTileID,\n pitchWithMap: boolean,\n rotateWithMap: boolean,\n translation: [number, number],\n projectedPoint: {x: number; y: number; perspectiveRatio: number; signedDistanceFromCamera: number},\n getElevation?: (x: number, y: number) => number,\n shift?: Point,\n simpleProjectionMatrix?: mat4,\n ): ProjectedBox {\n // These vectors are valid both for screen space viewport-rotation-aligned texts and for pitch-align: map texts that are map-rotation-aligned.\n let vecEastX = 1;\n let vecEastY = 0;\n let vecSouthX = 0;\n let vecSouthY = 1;\n\n const translatedAnchorX = collisionBox.anchorPointX + translation[0];\n const translatedAnchorY = collisionBox.anchorPointY + translation[1];\n\n if (rotateWithMap && !pitchWithMap) {\n // Handles screen space texts that are always aligned east-west.\n const projectedEast = this.projectAndGetPerspectiveRatio(\n translatedAnchorX + 1,\n translatedAnchorY,\n unwrappedTileID,\n getElevation,\n simpleProjectionMatrix,\n );\n const toEastX = projectedEast.x - projectedPoint.x;\n const toEastY = projectedEast.y - projectedPoint.y;\n const angle = Math.atan(toEastY / toEastX) + (toEastX < 0 ? Math.PI : 0);\n const sin = Math.sin(angle);\n const cos = Math.cos(angle);\n vecEastX = cos;\n vecEastY = sin;\n vecSouthX = -sin;\n vecSouthY = cos;\n } else if (!rotateWithMap && pitchWithMap) {\n // Handles pitch-align: map texts that are always aligned with the viewport's X axis.\n const skew = getTileSkewVectors(this.transform);\n vecEastX = skew.vecEast[0];\n vecEastY = skew.vecEast[1];\n vecSouthX = skew.vecSouth[0];\n vecSouthY = skew.vecSouth[1];\n }\n\n // Configuration for screen space offsets\n let basePointX = projectedPoint.x;\n let basePointY = projectedPoint.y;\n let distanceMultiplier = tileToViewport;\n\n if (pitchWithMap) {\n // Configuration for tile space (map-pitch-aligned) offsets\n basePointX = translatedAnchorX;\n basePointY = translatedAnchorY;\n\n const zoomFraction = this.transform.zoom - tileID.overscaledZ;\n distanceMultiplier = Math.pow(2, -zoomFraction);\n distanceMultiplier *= this.transform.getPitchedTextCorrection(translatedAnchorX, translatedAnchorY, unwrappedTileID);\n\n // This next correction can't be applied when variable anchors are in use.\n if (!shift) {\n // Shader applies a perspective size correction, we need to apply the same correction.\n // For non-pitchWithMap texts, this is handled above by multiplying `textPixelRatio` with `projectedPoint.perspectiveRatio`,\n // which is equivalent to the non-pitchWithMap branch of the GLSL code.\n // Here, we compute and apply the pitchWithMap branch.\n // See the computation of `perspective_ratio` in the symbol vertex shaders for the GLSL code.\n const distanceRatio = projectedPoint.signedDistanceFromCamera / this.transform.cameraToCenterDistance;\n const perspectiveRatio = clamp(0.5 + 0.5 * distanceRatio, 0.0, 4.0); // Same clamp as what is used in the shader.\n distanceMultiplier *= perspectiveRatio;\n }\n }\n\n if (shift) {\n // Variable anchors are in use\n basePointX += vecEastX * shift.x * distanceMultiplier + vecSouthX * shift.y * distanceMultiplier;\n basePointY += vecEastY * shift.x * distanceMultiplier + vecSouthY * shift.y * distanceMultiplier;\n }\n\n const offsetXmin = collisionBox.x1 * distanceMultiplier;\n const offsetXmax = collisionBox.x2 * distanceMultiplier;\n const offsetXhalf = (offsetXmin + offsetXmax) / 2;\n const offsetYmin = collisionBox.y1 * distanceMultiplier;\n const offsetYmax = collisionBox.y2 * distanceMultiplier;\n const offsetYhalf = (offsetYmin + offsetYmax) / 2;\n\n // 0--1--2\n // | |\n // 7 3\n // | |\n // 6--5--4\n const offsetsArray: Array<{offsetX: number; offsetY: number}> = [\n {offsetX: offsetXmin, offsetY: offsetYmin},\n {offsetX: offsetXhalf, offsetY: offsetYmin},\n {offsetX: offsetXmax, offsetY: offsetYmin},\n {offsetX: offsetXmax, offsetY: offsetYhalf},\n {offsetX: offsetXmax, offsetY: offsetYmax},\n {offsetX: offsetXhalf, offsetY: offsetYmax},\n {offsetX: offsetXmin, offsetY: offsetYmax},\n {offsetX: offsetXmin, offsetY: offsetYhalf}\n ];\n\n let points: Array = [];\n\n for (const {offsetX, offsetY} of offsetsArray) {\n points.push(new Point(\n basePointX + vecEastX * offsetX + vecSouthX * offsetY,\n basePointY + vecEastY * offsetX + vecSouthY * offsetY\n ));\n }\n\n // Is any point of the collision shape visible on the globe (on beyond horizon)?\n let anyPointVisible = false;\n\n if (pitchWithMap) {\n const projected = points.map(p => this.projectAndGetPerspectiveRatio(p.x, p.y, unwrappedTileID, getElevation, simpleProjectionMatrix));\n\n // Is at least one of the projected points NOT behind the horizon?\n anyPointVisible = projected.some(p => !p.isOccluded);\n\n points = projected.map(p => new Point(p.x, p.y));\n } else {\n // Labels that are not pitchWithMap cannot ever hide behind the horizon.\n anyPointVisible = true;\n }\n\n return {\n box: getAABB(points),\n allPointsOccluded: !anyPointVisible\n };\n }\n}\n","import {CollisionIndex, viewportPadding} from './collision_index';\nimport type {FeatureKey, PlacedBox, PlacedCircles} from './collision_index';\nimport {EXTENT} from '../data/extent';\nimport * as symbolSize from './symbol_size';\nimport * as projection from './projection';\nimport {getAnchorJustification} from './symbol_layout';\nimport {getAnchorAlignment, WritingMode} from './shaping';\nimport {type mat4} from 'gl-matrix';\nimport {pixelsToTileUnits} from '../source/pixels_to_tile_units';\nimport Point from '@mapbox/point-geometry';\nimport type {IReadonlyTransform, ITransform} from '../geo/transform_interface';\nimport type {StyleLayer} from '../style/style_layer';\nimport {type PossiblyEvaluated} from '../style/properties';\nimport type {SymbolLayoutProps, SymbolLayoutPropsPossiblyEvaluated} from '../style/style_layer/symbol_style_layer_properties.g';\nimport {getOverlapMode, type OverlapMode} from '../style/style_layer/overlap_mode';\n\nimport type {Tile} from '../source/tile';\nimport {type SymbolBucket, type CollisionArrays, type SingleCollisionBox} from '../data/bucket/symbol_bucket';\n\nimport type {CollisionBoxArray, CollisionVertexArray, SymbolInstance, TextAnchorOffset} from '../data/array_types.g';\nimport type {FeatureIndex} from '../data/feature_index';\nimport type {OverscaledTileID, UnwrappedTileID} from '../source/tile_id';\nimport {type Terrain} from '../render/terrain';\nimport {translatePosition, warnOnce} from '../util/util';\nimport {type TextAnchor, TextAnchorEnum} from '../style/style_layer/variable_text_anchor';\n\nclass OpacityState {\n opacity: number;\n placed: boolean;\n constructor(prevState: OpacityState, increment: number, placed: boolean, skipFade?: boolean | null) {\n if (prevState) {\n this.opacity = Math.max(0, Math.min(1, prevState.opacity + (prevState.placed ? increment : -increment)));\n } else {\n this.opacity = (skipFade && placed) ? 1 : 0;\n }\n this.placed = placed;\n }\n isHidden() {\n return this.opacity === 0 && !this.placed;\n }\n}\n\nclass JointOpacityState {\n text: OpacityState;\n icon: OpacityState;\n constructor(prevState: JointOpacityState, increment: number, placedText: boolean, placedIcon: boolean, skipFade?: boolean | null) {\n this.text = new OpacityState(prevState ? prevState.text : null, increment, placedText, skipFade);\n this.icon = new OpacityState(prevState ? prevState.icon : null, increment, placedIcon, skipFade);\n }\n isHidden() {\n return this.text.isHidden() && this.icon.isHidden();\n }\n}\n\nclass JointPlacement {\n text: boolean;\n icon: boolean;\n // skipFade = outside viewport, but within CollisionIndex::viewportPadding px of the edge\n // Because these symbols aren't onscreen yet, we can skip the \"fade in\" animation,\n // and if a subsequent viewport change brings them into view, they'll be fully\n // visible right away.\n skipFade: boolean;\n constructor(text: boolean, icon: boolean, skipFade: boolean) {\n this.text = text;\n this.icon = icon;\n this.skipFade = skipFade;\n }\n}\n\nexport class RetainedQueryData {\n bucketInstanceId: number;\n featureIndex: FeatureIndex;\n sourceLayerIndex: number;\n bucketIndex: number;\n tileID: OverscaledTileID;\n featureSortOrder: Array;\n constructor(bucketInstanceId: number,\n featureIndex: FeatureIndex,\n sourceLayerIndex: number,\n bucketIndex: number,\n tileID: OverscaledTileID) {\n this.bucketInstanceId = bucketInstanceId;\n this.featureIndex = featureIndex;\n this.sourceLayerIndex = sourceLayerIndex;\n this.bucketIndex = bucketIndex;\n this.tileID = tileID;\n }\n}\n\ntype CollisionGroup = {\n ID: number;\n predicate?: (key: FeatureKey) => boolean;\n};\n\nclass CollisionGroups {\n collisionGroups: {[groupName: string]: CollisionGroup};\n maxGroupID: number;\n crossSourceCollisions: boolean;\n\n constructor(crossSourceCollisions: boolean) {\n this.crossSourceCollisions = crossSourceCollisions;\n this.maxGroupID = 0;\n this.collisionGroups = {};\n }\n\n get(sourceID: string) {\n // The predicate/groupID mechanism allows for arbitrary grouping,\n // but the current interface defines one source == one group when\n // crossSourceCollisions == true.\n if (!this.crossSourceCollisions) {\n if (!this.collisionGroups[sourceID]) {\n const nextGroupID = ++this.maxGroupID;\n this.collisionGroups[sourceID] = {\n ID: nextGroupID,\n predicate: (key) => {\n return key.collisionGroupID === nextGroupID;\n }\n };\n }\n return this.collisionGroups[sourceID];\n } else {\n return {ID: 0, predicate: null};\n }\n }\n}\n\nfunction calculateVariableLayoutShift(\n anchor: TextAnchor,\n width: number,\n height: number,\n textOffset: [number, number],\n textBoxScale: number\n): Point {\n const {horizontalAlign, verticalAlign} = getAnchorAlignment(anchor);\n const shiftX = -(horizontalAlign - 0.5) * width;\n const shiftY = -(verticalAlign - 0.5) * height;\n return new Point(\n shiftX + textOffset[0] * textBoxScale,\n shiftY + textOffset[1] * textBoxScale\n );\n}\n\nexport type VariableOffset = {\n textOffset: [number, number];\n width: number;\n height: number;\n anchor: TextAnchor;\n textBoxScale: number;\n prevAnchor?: TextAnchor;\n};\n\ntype TileLayerParameters = {\n bucket: SymbolBucket;\n layout: PossiblyEvaluated;\n translationText: [number, number];\n translationIcon: [number, number];\n unwrappedTileID: UnwrappedTileID;\n pitchedLabelPlaneMatrix: mat4;\n scale: number;\n textPixelRatio: number;\n holdingForFade: boolean;\n collisionBoxArray: CollisionBoxArray;\n partiallyEvaluatedTextSize: {\n uSize: number;\n uSizeT: number;\n };\n collisionGroup: CollisionGroup;\n};\n\nexport type BucketPart = {\n sortKey?: number | void;\n symbolInstanceStart: number;\n symbolInstanceEnd: number;\n parameters: TileLayerParameters;\n};\n\nexport type CrossTileID = string | number;\n\nexport class Placement {\n transform: IReadonlyTransform;\n terrain: Terrain;\n collisionIndex: CollisionIndex;\n placements: {\n [_ in CrossTileID]: JointPlacement;\n };\n opacities: {\n [_ in CrossTileID]: JointOpacityState;\n };\n variableOffsets: {\n [_ in CrossTileID]: VariableOffset;\n };\n placedOrientations: {\n [_ in CrossTileID]: number;\n };\n commitTime: number;\n prevZoomAdjustment: number;\n lastPlacementChangeTime: number;\n stale: boolean;\n fadeDuration: number;\n retainedQueryData: {\n [_: number]: RetainedQueryData;\n };\n collisionGroups: CollisionGroups;\n prevPlacement: Placement;\n zoomAtLastRecencyCheck: number;\n collisionCircleArrays: {\n [k in any]: Array;\n };\n collisionBoxArrays: Map>;\n\n constructor(transform: ITransform, terrain: Terrain, fadeDuration: number, crossSourceCollisions: boolean, prevPlacement?: Placement) {\n this.transform = transform.clone();\n this.terrain = terrain;\n this.collisionIndex = new CollisionIndex(this.transform);\n this.placements = {};\n this.opacities = {};\n this.variableOffsets = {};\n this.stale = false;\n this.commitTime = 0;\n this.fadeDuration = fadeDuration;\n this.retainedQueryData = {};\n this.collisionGroups = new CollisionGroups(crossSourceCollisions);\n this.collisionCircleArrays = {};\n this.collisionBoxArrays = new Map>();\n\n this.prevPlacement = prevPlacement;\n if (prevPlacement) {\n prevPlacement.prevPlacement = undefined; // Only hold on to one placement back\n }\n\n this.placedOrientations = {};\n }\n\n private _getTerrainElevationFunc(tileID: OverscaledTileID) {\n const terrain = this.terrain;\n return terrain ? (x: number, y: number) => terrain.getElevation(tileID, x, y) : null;\n }\n\n getBucketParts(results: Array, styleLayer: StyleLayer, tile: Tile, sortAcrossTiles: boolean) {\n const symbolBucket = (tile.getBucket(styleLayer) as SymbolBucket);\n const bucketFeatureIndex = tile.latestFeatureIndex;\n if (!symbolBucket || !bucketFeatureIndex || styleLayer.id !== symbolBucket.layerIds[0])\n return;\n\n const collisionBoxArray = tile.collisionBoxArray;\n\n const layout = symbolBucket.layers[0].layout;\n const paint = symbolBucket.layers[0].paint;\n\n const scale = Math.pow(2, this.transform.zoom - tile.tileID.overscaledZ);\n const textPixelRatio = tile.tileSize / EXTENT;\n\n const unwrappedTileID = tile.tileID.toUnwrapped();\n\n const rotateWithMap = layout.get('text-rotation-alignment') === 'map';\n const pixelsToTiles = pixelsToTileUnits(tile, 1, this.transform.zoom);\n\n const translationText = translatePosition(\n this.collisionIndex.transform,\n tile,\n paint.get('text-translate'),\n paint.get('text-translate-anchor'),);\n\n const translationIcon = translatePosition(\n this.collisionIndex.transform,\n tile,\n paint.get('icon-translate'),\n paint.get('icon-translate-anchor'),);\n\n const pitchedLabelPlaneMatrix = projection.getPitchedLabelPlaneMatrix(rotateWithMap, this.transform, pixelsToTiles);\n\n // As long as this placement lives, we have to hold onto this bucket's\n // matching FeatureIndex/data for querying purposes\n this.retainedQueryData[symbolBucket.bucketInstanceId] = new RetainedQueryData(\n symbolBucket.bucketInstanceId,\n bucketFeatureIndex,\n symbolBucket.sourceLayerIndex,\n symbolBucket.index,\n tile.tileID\n );\n\n const parameters: TileLayerParameters = {\n bucket: symbolBucket,\n layout,\n translationText,\n translationIcon,\n unwrappedTileID,\n pitchedLabelPlaneMatrix,\n scale,\n textPixelRatio,\n holdingForFade: tile.holdingForFade(),\n collisionBoxArray,\n partiallyEvaluatedTextSize: symbolSize.evaluateSizeForZoom(symbolBucket.textSizeData, this.transform.zoom),\n collisionGroup: this.collisionGroups.get(symbolBucket.sourceID)\n };\n\n if (sortAcrossTiles) {\n for (const range of symbolBucket.sortKeyRanges) {\n const {sortKey, symbolInstanceStart, symbolInstanceEnd} = range;\n results.push({sortKey, symbolInstanceStart, symbolInstanceEnd, parameters});\n }\n } else {\n results.push({\n symbolInstanceStart: 0,\n symbolInstanceEnd: symbolBucket.symbolInstances.length,\n parameters\n });\n }\n }\n\n attemptAnchorPlacement(\n textAnchorOffset: TextAnchorOffset,\n textBox: SingleCollisionBox,\n width: number,\n height: number,\n textBoxScale: number,\n rotateWithMap: boolean,\n pitchWithMap: boolean,\n textPixelRatio: number,\n tileID: OverscaledTileID,\n unwrappedTileID,\n collisionGroup: CollisionGroup,\n textOverlapMode: OverlapMode,\n symbolInstance: SymbolInstance,\n bucket: SymbolBucket,\n orientation: number,\n translationText: [number, number],\n translationIcon: [number, number],\n iconBox?: SingleCollisionBox | null,\n getElevation?: (x: number, y: number) => number,\n simpleProjectionMatrix?: mat4,\n ): {\n shift: Point;\n placedGlyphBoxes: PlacedBox;\n } {\n\n const anchor = TextAnchorEnum[textAnchorOffset.textAnchor] as TextAnchor;\n const textOffset = [textAnchorOffset.textOffset0, textAnchorOffset.textOffset1] as [number, number];\n const shift = calculateVariableLayoutShift(anchor, width, height, textOffset, textBoxScale);\n\n const placedGlyphBoxes = this.collisionIndex.placeCollisionBox(\n textBox,\n textOverlapMode,\n textPixelRatio,\n tileID,\n unwrappedTileID,\n pitchWithMap,\n rotateWithMap,\n translationText,\n collisionGroup.predicate,\n getElevation,\n shift,\n simpleProjectionMatrix,\n );\n\n if (iconBox) {\n const placedIconBoxes = this.collisionIndex.placeCollisionBox(\n iconBox,\n textOverlapMode,\n textPixelRatio,\n tileID,\n unwrappedTileID,\n pitchWithMap,\n rotateWithMap,\n translationIcon,\n collisionGroup.predicate,\n getElevation,\n shift,\n simpleProjectionMatrix,\n );\n if (!placedIconBoxes.placeable) return;\n }\n\n if (placedGlyphBoxes.placeable) {\n let prevAnchor;\n // If this label was placed in the previous placement, record the anchor position\n // to allow us to animate the transition\n if (this.prevPlacement &&\n this.prevPlacement.variableOffsets[symbolInstance.crossTileID] &&\n this.prevPlacement.placements[symbolInstance.crossTileID] &&\n this.prevPlacement.placements[symbolInstance.crossTileID].text) {\n prevAnchor = this.prevPlacement.variableOffsets[symbolInstance.crossTileID].anchor;\n }\n if (symbolInstance.crossTileID === 0) throw new Error('symbolInstance.crossTileID can\\'t be 0');\n this.variableOffsets[symbolInstance.crossTileID] = {\n textOffset,\n width,\n height,\n anchor,\n textBoxScale,\n prevAnchor\n };\n this.markUsedJustification(bucket, anchor, symbolInstance, orientation);\n\n if (bucket.allowVerticalPlacement) {\n this.markUsedOrientation(bucket, orientation, symbolInstance);\n this.placedOrientations[symbolInstance.crossTileID] = orientation;\n }\n\n return {shift, placedGlyphBoxes};\n }\n }\n\n placeLayerBucketPart(bucketPart: BucketPart, seenCrossTileIDs: {\n [k in string | number]: boolean;\n }, showCollisionBoxes: boolean) {\n\n const {\n bucket,\n layout,\n translationText,\n translationIcon,\n unwrappedTileID,\n pitchedLabelPlaneMatrix,\n textPixelRatio,\n holdingForFade,\n collisionBoxArray,\n partiallyEvaluatedTextSize,\n collisionGroup\n } = bucketPart.parameters;\n\n const textOptional = layout.get('text-optional');\n const iconOptional = layout.get('icon-optional');\n const textOverlapMode = getOverlapMode(layout, 'text-overlap', 'text-allow-overlap');\n const textAlwaysOverlap = textOverlapMode === 'always';\n const iconOverlapMode = getOverlapMode(layout, 'icon-overlap', 'icon-allow-overlap');\n const iconAlwaysOverlap = iconOverlapMode === 'always';\n const rotateWithMap = layout.get('text-rotation-alignment') === 'map';\n const pitchWithMap = layout.get('text-pitch-alignment') === 'map';\n const hasIconTextFit = layout.get('icon-text-fit') !== 'none';\n const zOrderByViewportY = layout.get('symbol-z-order') === 'viewport-y';\n\n // This logic is similar to the \"defaultOpacityState\" logic below in updateBucketOpacities\n // If we know a symbol is always supposed to show, force it to be marked visible even if\n // it wasn't placed into the collision index (because some or all of it was outside the range\n // of the collision grid).\n // There is a subtle edge case here we're accepting:\n // Symbol A has text-allow-overlap: true, icon-allow-overlap: true, icon-optional: false\n // A's icon is outside the grid, so doesn't get placed\n // A's text would be inside grid, but doesn't get placed because of icon-optional: false\n // We still show A because of the allow-overlap settings.\n // Symbol B has allow-overlap: false, and gets placed where A's text would be\n // On panning in, there is a short period when Symbol B and Symbol A will overlap\n // This is the reverse of our normal policy of \"fade in on pan\", but should look like any other\n // collision and hopefully not be too noticeable.\n // See https://github.com/mapbox/mapbox-gl-js/issues/7172\n const alwaysShowText = textAlwaysOverlap && (iconAlwaysOverlap || !bucket.hasIconData() || iconOptional);\n const alwaysShowIcon = iconAlwaysOverlap && (textAlwaysOverlap || !bucket.hasTextData() || textOptional);\n\n if (!bucket.collisionArrays && collisionBoxArray) {\n bucket.deserializeCollisionBoxes(collisionBoxArray);\n }\n\n const tileID = this.retainedQueryData[bucket.bucketInstanceId].tileID;\n const getElevation = this._getTerrainElevationFunc(tileID);\n const simpleProjectionMatrix = this.transform.getFastPathSimpleProjectionMatrix(tileID);\n\n const placeSymbol = (symbolInstance: SymbolInstance, collisionArrays: CollisionArrays, symbolIndex: number) => {\n if (seenCrossTileIDs[symbolInstance.crossTileID]) return;\n if (holdingForFade) {\n // Mark all symbols from this tile as \"not placed\", but don't add to seenCrossTileIDs, because we don't\n // know yet if we have a duplicate in a parent tile that _should_ be placed.\n this.placements[symbolInstance.crossTileID] = new JointPlacement(false, false, false);\n return;\n }\n\n let placeText = false;\n let placeIcon = false;\n let offscreen = true;\n let shift = null;\n\n let placed: PlacedBox = {box: null, placeable: false, offscreen: null, occluded: false};\n let placedVerticalText = {box: null, placeable: false, offscreen: null};\n\n let placedGlyphBoxes: PlacedBox = null;\n let placedGlyphCircles: PlacedCircles = null;\n let placedIconBoxes: PlacedBox = null;\n let textFeatureIndex = 0;\n let verticalTextFeatureIndex = 0;\n let iconFeatureIndex = 0;\n\n if (collisionArrays.textFeatureIndex) {\n textFeatureIndex = collisionArrays.textFeatureIndex;\n } else if (symbolInstance.useRuntimeCollisionCircles) {\n textFeatureIndex = symbolInstance.featureIndex;\n }\n if (collisionArrays.verticalTextFeatureIndex) {\n verticalTextFeatureIndex = collisionArrays.verticalTextFeatureIndex;\n }\n\n const textBox = collisionArrays.textBox;\n if (textBox) {\n\n const updatePreviousOrientationIfNotPlaced = (isPlaced) => {\n let previousOrientation = WritingMode.horizontal;\n if (bucket.allowVerticalPlacement && !isPlaced && this.prevPlacement) {\n const prevPlacedOrientation = this.prevPlacement.placedOrientations[symbolInstance.crossTileID];\n if (prevPlacedOrientation) {\n this.placedOrientations[symbolInstance.crossTileID] = prevPlacedOrientation;\n previousOrientation = prevPlacedOrientation;\n this.markUsedOrientation(bucket, previousOrientation, symbolInstance);\n }\n }\n return previousOrientation;\n };\n\n const placeTextForPlacementModes = (placeHorizontalFn, placeVerticalFn) => {\n if (bucket.allowVerticalPlacement && symbolInstance.numVerticalGlyphVertices > 0 && collisionArrays.verticalTextBox) {\n for (const placementMode of bucket.writingModes) {\n if (placementMode === WritingMode.vertical) {\n placed = placeVerticalFn();\n placedVerticalText = placed;\n } else {\n placed = placeHorizontalFn();\n }\n if (placed && placed.placeable) break;\n }\n } else {\n placed = placeHorizontalFn();\n }\n };\n\n const textAnchorOffsetStart = symbolInstance.textAnchorOffsetStartIndex;\n const textAnchorOffsetEnd = symbolInstance.textAnchorOffsetEndIndex;\n\n // If start+end indices match, text-variable-anchor is not in play.\n if (textAnchorOffsetEnd === textAnchorOffsetStart) {\n const placeBox = (collisionTextBox, orientation) => {\n const placedFeature = this.collisionIndex.placeCollisionBox(\n collisionTextBox,\n textOverlapMode,\n textPixelRatio,\n tileID,\n unwrappedTileID,\n pitchWithMap,\n rotateWithMap,\n translationText,\n collisionGroup.predicate,\n getElevation,\n undefined,\n simpleProjectionMatrix,\n );\n if (placedFeature && placedFeature.placeable) {\n this.markUsedOrientation(bucket, orientation, symbolInstance);\n this.placedOrientations[symbolInstance.crossTileID] = orientation;\n }\n return placedFeature;\n };\n\n const placeHorizontal = () => {\n return placeBox(textBox, WritingMode.horizontal);\n };\n\n const placeVertical = () => {\n const verticalTextBox = collisionArrays.verticalTextBox;\n if (bucket.allowVerticalPlacement && symbolInstance.numVerticalGlyphVertices > 0 && verticalTextBox) {\n return placeBox(verticalTextBox, WritingMode.vertical);\n }\n return {box: null, offscreen: null};\n };\n\n placeTextForPlacementModes(placeHorizontal, placeVertical);\n updatePreviousOrientationIfNotPlaced(placed && placed.placeable);\n\n } else {\n // If this symbol was in the last placement, prefer placement using same anchor, if it's still available\n let prevAnchor = TextAnchorEnum[this.prevPlacement?.variableOffsets[symbolInstance.crossTileID]?.anchor];\n\n const placeBoxForVariableAnchors = (collisionTextBox, collisionIconBox, orientation) => {\n const width = collisionTextBox.x2 - collisionTextBox.x1;\n const height = collisionTextBox.y2 - collisionTextBox.y1;\n const textBoxScale = symbolInstance.textBoxScale;\n const variableIconBox = hasIconTextFit && (iconOverlapMode === 'never') ? collisionIconBox : null;\n\n let placedBox: PlacedBox = null;\n let placementPasses = (textOverlapMode === 'never') ? 1 : 2;\n let overlapMode: OverlapMode = 'never';\n\n if (prevAnchor) {\n placementPasses++;\n }\n\n for (let pass = 0; pass < placementPasses; pass++) {\n for (let i = textAnchorOffsetStart; i < textAnchorOffsetEnd; i++) {\n const textAnchorOffset = bucket.textAnchorOffsets.get(i);\n\n if (prevAnchor && textAnchorOffset.textAnchor !== prevAnchor) {\n continue;\n }\n\n const result = this.attemptAnchorPlacement(\n textAnchorOffset, collisionTextBox, width, height,\n textBoxScale, rotateWithMap, pitchWithMap, textPixelRatio, tileID, unwrappedTileID,\n collisionGroup, overlapMode, symbolInstance, bucket, orientation, translationText, translationIcon, variableIconBox, getElevation);\n\n if (result) {\n placedBox = result.placedGlyphBoxes;\n if (placedBox && placedBox.placeable) {\n placeText = true;\n shift = result.shift;\n return placedBox;\n }\n }\n }\n\n if (prevAnchor) {\n prevAnchor = null;\n } else {\n overlapMode = textOverlapMode;\n }\n }\n\n if (showCollisionBoxes && !placedBox) {\n // No box was successfully placed\n // Generate bounds for a fake centered box, so that we can at least display something for collision debug.\n const placedFakeGlyphBox = this.collisionIndex.placeCollisionBox(\n textBox,\n 'always', // Skips expensive collision check with already placed boxes\n textPixelRatio,\n tileID,\n unwrappedTileID,\n pitchWithMap,\n rotateWithMap,\n translationText,\n collisionGroup.predicate,\n getElevation,\n undefined,\n simpleProjectionMatrix,\n );\n placedBox = {\n box: placedFakeGlyphBox.box,\n offscreen: false,\n placeable: false,\n occluded: false,\n };\n }\n\n return placedBox;\n };\n\n const placeHorizontal = () => {\n return placeBoxForVariableAnchors(textBox, collisionArrays.iconBox, WritingMode.horizontal);\n };\n\n const placeVertical = () => {\n const verticalTextBox = collisionArrays.verticalTextBox;\n const wasPlaced = placed && placed.placeable;\n if (bucket.allowVerticalPlacement && !wasPlaced && symbolInstance.numVerticalGlyphVertices > 0 && verticalTextBox) {\n return placeBoxForVariableAnchors(verticalTextBox, collisionArrays.verticalIconBox, WritingMode.vertical);\n }\n return {box: null, occluded: true, offscreen: null};\n };\n\n placeTextForPlacementModes(placeHorizontal, placeVertical);\n\n if (placed) {\n placeText = placed.placeable;\n offscreen = placed.offscreen;\n }\n\n const prevOrientation = updatePreviousOrientationIfNotPlaced(placed && placed.placeable);\n\n // If we didn't get placed, we still need to copy our position from the last placement for\n // fade animations\n if (!placeText && this.prevPlacement) {\n const prevOffset = this.prevPlacement.variableOffsets[symbolInstance.crossTileID];\n if (prevOffset) {\n this.variableOffsets[symbolInstance.crossTileID] = prevOffset;\n this.markUsedJustification(bucket, prevOffset.anchor, symbolInstance, prevOrientation);\n }\n }\n\n }\n }\n\n placedGlyphBoxes = placed;\n placeText = placedGlyphBoxes && placedGlyphBoxes.placeable;\n offscreen = placedGlyphBoxes && placedGlyphBoxes.offscreen;\n\n if (symbolInstance.useRuntimeCollisionCircles) {\n const placedSymbol = bucket.text.placedSymbolArray.get(symbolInstance.centerJustifiedTextSymbolIndex);\n const fontSize = symbolSize.evaluateSizeForFeature(bucket.textSizeData, partiallyEvaluatedTextSize, placedSymbol);\n\n const textPixelPadding = layout.get('text-padding');\n const circlePixelDiameter = symbolInstance.collisionCircleDiameter;\n\n placedGlyphCircles = this.collisionIndex.placeCollisionCircles(\n textOverlapMode,\n placedSymbol,\n bucket.lineVertexArray,\n bucket.glyphOffsetArray,\n fontSize,\n unwrappedTileID,\n pitchedLabelPlaneMatrix,\n showCollisionBoxes,\n pitchWithMap,\n collisionGroup.predicate,\n circlePixelDiameter,\n textPixelPadding,\n translationText,\n getElevation\n );\n\n if (placedGlyphCircles.circles.length && placedGlyphCircles.collisionDetected && !showCollisionBoxes) {\n warnOnce('Collisions detected, but collision boxes are not shown');\n }\n\n // If text-overlap is set to 'always', force \"placedCircles\" to true\n // In theory there should always be at least one circle placed\n // in this case, but for now quirks in text-anchor\n // and text-offset may prevent that from being true.\n placeText = textAlwaysOverlap || (placedGlyphCircles.circles.length > 0 && !placedGlyphCircles.collisionDetected);\n offscreen = offscreen && placedGlyphCircles.offscreen;\n }\n\n if (collisionArrays.iconFeatureIndex) {\n iconFeatureIndex = collisionArrays.iconFeatureIndex;\n }\n\n if (collisionArrays.iconBox) {\n const placeIconFeature = iconBox => {\n return this.collisionIndex.placeCollisionBox(\n iconBox,\n iconOverlapMode,\n textPixelRatio,\n tileID,\n unwrappedTileID,\n pitchWithMap,\n rotateWithMap,\n translationIcon,\n collisionGroup.predicate,\n getElevation,\n (hasIconTextFit && shift) ? shift : undefined,\n simpleProjectionMatrix,\n );\n };\n\n if (placedVerticalText && placedVerticalText.placeable && collisionArrays.verticalIconBox) {\n placedIconBoxes = placeIconFeature(collisionArrays.verticalIconBox);\n placeIcon = placedIconBoxes.placeable;\n } else {\n placedIconBoxes = placeIconFeature(collisionArrays.iconBox);\n placeIcon = placedIconBoxes.placeable;\n }\n offscreen = offscreen && placedIconBoxes.offscreen;\n }\n\n const iconWithoutText = textOptional ||\n (symbolInstance.numHorizontalGlyphVertices === 0 && symbolInstance.numVerticalGlyphVertices === 0);\n const textWithoutIcon = iconOptional || symbolInstance.numIconVertices === 0;\n\n // Combine the scales for icons and text.\n if (!iconWithoutText && !textWithoutIcon) {\n placeIcon = placeText = placeIcon && placeText;\n } else if (!textWithoutIcon) {\n placeText = placeIcon && placeText;\n } else if (!iconWithoutText) {\n placeIcon = placeIcon && placeText;\n }\n\n const hasTextBox = placeText && placedGlyphBoxes.placeable;\n const hasIconBox = placeIcon && placedIconBoxes.placeable;\n\n if (hasTextBox) {\n if (placedVerticalText && placedVerticalText.placeable && verticalTextFeatureIndex) {\n this.collisionIndex.insertCollisionBox(\n placedGlyphBoxes.box,\n textOverlapMode,\n layout.get('text-ignore-placement'),\n bucket.bucketInstanceId,\n verticalTextFeatureIndex,\n collisionGroup.ID);\n } else {\n this.collisionIndex.insertCollisionBox(\n placedGlyphBoxes.box,\n textOverlapMode,\n layout.get('text-ignore-placement'),\n bucket.bucketInstanceId,\n textFeatureIndex,\n collisionGroup.ID);\n }\n\n }\n if (hasIconBox) {\n this.collisionIndex.insertCollisionBox(\n placedIconBoxes.box,\n iconOverlapMode,\n layout.get('icon-ignore-placement'),\n bucket.bucketInstanceId,\n iconFeatureIndex,\n collisionGroup.ID);\n }\n if (placedGlyphCircles) {\n if (placeText) {\n this.collisionIndex.insertCollisionCircles(\n placedGlyphCircles.circles,\n textOverlapMode,\n layout.get('text-ignore-placement'),\n bucket.bucketInstanceId,\n textFeatureIndex,\n collisionGroup.ID);\n }\n }\n\n if (showCollisionBoxes) {\n this.storeCollisionData(bucket.bucketInstanceId, symbolIndex, collisionArrays, placedGlyphBoxes, placedIconBoxes, placedGlyphCircles);\n }\n\n if (symbolInstance.crossTileID === 0) throw new Error('symbolInstance.crossTileID can\\'t be 0');\n if (bucket.bucketInstanceId === 0) throw new Error('bucket.bucketInstanceId can\\'t be 0');\n\n // Do not show text or icons that are occluded by the globe, even if overlap mode is 'always'!\n const textVisible: boolean = (placeText || alwaysShowText) && !(placedGlyphBoxes?.occluded);\n const iconVisible = (placeIcon || alwaysShowIcon) && !(placedIconBoxes?.occluded);\n this.placements[symbolInstance.crossTileID] = new JointPlacement(textVisible, iconVisible, offscreen || bucket.justReloaded);\n seenCrossTileIDs[symbolInstance.crossTileID] = true;\n };\n\n if (zOrderByViewportY) {\n if (bucketPart.symbolInstanceStart !== 0) throw new Error('bucket.bucketInstanceId should be 0');\n const symbolIndexes = bucket.getSortedSymbolIndexes(-this.transform.bearingInRadians);\n for (let i = symbolIndexes.length - 1; i >= 0; --i) {\n const symbolIndex = symbolIndexes[i];\n placeSymbol(bucket.symbolInstances.get(symbolIndex), bucket.collisionArrays[symbolIndex], symbolIndex);\n }\n } else {\n for (let i = bucketPart.symbolInstanceStart; i < bucketPart.symbolInstanceEnd; i++) {\n placeSymbol(bucket.symbolInstances.get(i), bucket.collisionArrays[i], i);\n }\n }\n\n bucket.justReloaded = false;\n }\n\n storeCollisionData(bucketInstanceId: number, symbolIndex: number, collisionArrays: CollisionArrays, placedGlyphBoxes: PlacedBox, placedIconBoxes: PlacedBox, placedGlyphCircles: PlacedCircles): void {\n if (collisionArrays.textBox || collisionArrays.iconBox) {\n // Store the actually used collision box for debug draw\n let boxArray: Map;\n\n if (this.collisionBoxArrays.has(bucketInstanceId)) {\n boxArray = this.collisionBoxArrays.get(bucketInstanceId);\n } else {\n boxArray = new Map();\n this.collisionBoxArrays.set(bucketInstanceId, boxArray);\n }\n let realCollisionBox: {\n text: number[];\n icon: number[];\n };\n\n if (boxArray.has(symbolIndex)) {\n realCollisionBox = boxArray.get(symbolIndex);\n } else {\n realCollisionBox = {\n text: null,\n icon: null\n };\n boxArray.set(symbolIndex, realCollisionBox);\n }\n\n if (collisionArrays.textBox) {\n realCollisionBox.text = placedGlyphBoxes.box;\n }\n if (collisionArrays.iconBox) {\n realCollisionBox.icon = placedIconBoxes.box;\n }\n }\n\n if (placedGlyphCircles) {\n let circleArray = this.collisionCircleArrays[bucketInstanceId];\n\n // Group collision circles together by bucket. Circles can't be pushed forward for rendering yet as the symbol placement\n // for a bucket is not guaranteed to be complete before the commit-function has been called\n if (circleArray === undefined)\n circleArray = this.collisionCircleArrays[bucketInstanceId] = [];\n\n for (let i = 0; i < placedGlyphCircles.circles.length; i += 4) {\n circleArray.push(placedGlyphCircles.circles[i + 0] - viewportPadding); // x\n circleArray.push(placedGlyphCircles.circles[i + 1] - viewportPadding); // y\n circleArray.push(placedGlyphCircles.circles[i + 2]); // radius\n circleArray.push(placedGlyphCircles.collisionDetected ? 1 : 0); // collisionDetected-flag\n }\n }\n }\n\n markUsedJustification(bucket: SymbolBucket, placedAnchor: TextAnchor, symbolInstance: SymbolInstance, orientation: number) {\n const justifications = {\n 'left': symbolInstance.leftJustifiedTextSymbolIndex,\n 'center': symbolInstance.centerJustifiedTextSymbolIndex,\n 'right': symbolInstance.rightJustifiedTextSymbolIndex\n };\n\n let autoIndex;\n if (orientation === WritingMode.vertical) {\n autoIndex = symbolInstance.verticalPlacedTextSymbolIndex;\n } else {\n autoIndex = justifications[getAnchorJustification(placedAnchor)];\n }\n\n const indexes = [\n symbolInstance.leftJustifiedTextSymbolIndex,\n symbolInstance.centerJustifiedTextSymbolIndex,\n symbolInstance.rightJustifiedTextSymbolIndex,\n symbolInstance.verticalPlacedTextSymbolIndex\n ];\n\n for (const index of indexes) {\n if (index >= 0) {\n if (autoIndex >= 0 && index !== autoIndex) {\n // There are multiple justifications and this one isn't it: shift offscreen\n bucket.text.placedSymbolArray.get(index).crossTileID = 0;\n } else {\n // Either this is the chosen justification or the justification is hardwired: use this one\n bucket.text.placedSymbolArray.get(index).crossTileID = symbolInstance.crossTileID;\n }\n }\n }\n }\n\n markUsedOrientation(bucket: SymbolBucket, orientation: number, symbolInstance: SymbolInstance) {\n const horizontal = (orientation === WritingMode.horizontal || orientation === WritingMode.horizontalOnly) ? orientation : 0;\n const vertical = orientation === WritingMode.vertical ? orientation : 0;\n\n const horizontalIndexes = [\n symbolInstance.leftJustifiedTextSymbolIndex,\n symbolInstance.centerJustifiedTextSymbolIndex,\n symbolInstance.rightJustifiedTextSymbolIndex\n ];\n\n for (const index of horizontalIndexes) {\n bucket.text.placedSymbolArray.get(index).placedOrientation = horizontal;\n }\n\n if (symbolInstance.verticalPlacedTextSymbolIndex) {\n bucket.text.placedSymbolArray.get(symbolInstance.verticalPlacedTextSymbolIndex).placedOrientation = vertical;\n }\n }\n\n commit(now: number): void {\n this.commitTime = now;\n this.zoomAtLastRecencyCheck = this.transform.zoom;\n\n const prevPlacement = this.prevPlacement;\n let placementChanged = false;\n\n this.prevZoomAdjustment = prevPlacement ? prevPlacement.zoomAdjustment(this.transform.zoom) : 0;\n const increment = prevPlacement ? prevPlacement.symbolFadeChange(now) : 1;\n\n const prevOpacities = prevPlacement ? prevPlacement.opacities : {};\n const prevOffsets = prevPlacement ? prevPlacement.variableOffsets : {};\n const prevOrientations = prevPlacement ? prevPlacement.placedOrientations : {};\n\n // add the opacities from the current placement, and copy their current values from the previous placement\n for (const crossTileID in this.placements) {\n const jointPlacement = this.placements[crossTileID];\n const prevOpacity = prevOpacities[crossTileID];\n if (prevOpacity) {\n this.opacities[crossTileID] = new JointOpacityState(prevOpacity, increment, jointPlacement.text, jointPlacement.icon);\n placementChanged = placementChanged ||\n jointPlacement.text !== prevOpacity.text.placed ||\n jointPlacement.icon !== prevOpacity.icon.placed;\n } else {\n this.opacities[crossTileID] = new JointOpacityState(null, increment, jointPlacement.text, jointPlacement.icon, jointPlacement.skipFade);\n placementChanged = placementChanged || jointPlacement.text || jointPlacement.icon;\n }\n }\n\n // copy and update values from the previous placement that aren't in the current placement but haven't finished fading\n for (const crossTileID in prevOpacities) {\n const prevOpacity = prevOpacities[crossTileID];\n if (!this.opacities[crossTileID]) {\n const jointOpacity = new JointOpacityState(prevOpacity, increment, false, false);\n if (!jointOpacity.isHidden()) {\n this.opacities[crossTileID] = jointOpacity;\n placementChanged = placementChanged || prevOpacity.text.placed || prevOpacity.icon.placed;\n }\n }\n }\n for (const crossTileID in prevOffsets) {\n if (!this.variableOffsets[crossTileID] && this.opacities[crossTileID] && !this.opacities[crossTileID].isHidden()) {\n this.variableOffsets[crossTileID] = prevOffsets[crossTileID];\n }\n }\n\n for (const crossTileID in prevOrientations) {\n if (!this.placedOrientations[crossTileID] && this.opacities[crossTileID] && !this.opacities[crossTileID].isHidden()) {\n this.placedOrientations[crossTileID] = prevOrientations[crossTileID];\n }\n }\n\n // this.lastPlacementChangeTime is the time of the last commit() that\n // resulted in a placement change -- in other words, the start time of\n // the last symbol fade animation\n if (prevPlacement && prevPlacement.lastPlacementChangeTime === undefined) {\n throw new Error('Last placement time for previous placement is not defined');\n }\n if (placementChanged) {\n this.lastPlacementChangeTime = now;\n } else if (typeof this.lastPlacementChangeTime !== 'number') {\n this.lastPlacementChangeTime = prevPlacement ? prevPlacement.lastPlacementChangeTime : now;\n }\n }\n\n updateLayerOpacities(styleLayer: StyleLayer, tiles: Array) {\n const seenCrossTileIDs = {};\n for (const tile of tiles) {\n const symbolBucket = tile.getBucket(styleLayer) as SymbolBucket;\n if (symbolBucket && tile.latestFeatureIndex && styleLayer.id === symbolBucket.layerIds[0]) {\n this.updateBucketOpacities(symbolBucket, tile.tileID, seenCrossTileIDs, tile.collisionBoxArray);\n }\n }\n }\n\n updateBucketOpacities(bucket: SymbolBucket, tileID: OverscaledTileID, seenCrossTileIDs: {\n [k in string | number]: boolean;\n }, collisionBoxArray?: CollisionBoxArray | null) {\n if (bucket.hasTextData()) {\n bucket.text.opacityVertexArray.clear();\n bucket.text.hasVisibleVertices = false;\n }\n if (bucket.hasIconData()) {\n bucket.icon.opacityVertexArray.clear();\n bucket.icon.hasVisibleVertices = false;\n }\n if (bucket.hasIconCollisionBoxData()) bucket.iconCollisionBox.collisionVertexArray.clear();\n if (bucket.hasTextCollisionBoxData()) bucket.textCollisionBox.collisionVertexArray.clear();\n\n const layer = bucket.layers[0];\n const layout = layer.layout;\n const duplicateOpacityState = new JointOpacityState(null, 0, false, false, true);\n const textAllowOverlap = layout.get('text-allow-overlap');\n const iconAllowOverlap = layout.get('icon-allow-overlap');\n const hasVariablePlacement = layer._unevaluatedLayout.hasValue('text-variable-anchor') || layer._unevaluatedLayout.hasValue('text-variable-anchor-offset');\n const rotateWithMap = layout.get('text-rotation-alignment') === 'map';\n const pitchWithMap = layout.get('text-pitch-alignment') === 'map';\n const hasIconTextFit = layout.get('icon-text-fit') !== 'none';\n // If allow-overlap is true, we can show symbols before placement runs on them\n // But we have to wait for placement if we potentially depend on a paired icon/text\n // with allow-overlap: false.\n // See https://github.com/mapbox/mapbox-gl-js/issues/7032\n const defaultOpacityState = new JointOpacityState(null, 0,\n textAllowOverlap && (iconAllowOverlap || !bucket.hasIconData() || layout.get('icon-optional')),\n iconAllowOverlap && (textAllowOverlap || !bucket.hasTextData() || layout.get('text-optional')),\n true);\n\n if (!bucket.collisionArrays && collisionBoxArray && ((bucket.hasIconCollisionBoxData() || bucket.hasTextCollisionBoxData()))) {\n bucket.deserializeCollisionBoxes(collisionBoxArray);\n }\n\n const addOpacities = (iconOrText, numVertices: number, opacity: number) => {\n for (let i = 0; i < numVertices / 4; i++) {\n iconOrText.opacityVertexArray.emplaceBack(opacity);\n }\n iconOrText.hasVisibleVertices = iconOrText.hasVisibleVertices || (opacity !== PACKED_HIDDEN_OPACITY);\n };\n\n const boxArrays = this.collisionBoxArrays.get(bucket.bucketInstanceId);\n\n for (let s = 0; s < bucket.symbolInstances.length; s++) {\n const symbolInstance = bucket.symbolInstances.get(s);\n const {\n numHorizontalGlyphVertices,\n numVerticalGlyphVertices,\n crossTileID\n } = symbolInstance;\n\n const isDuplicate = seenCrossTileIDs[crossTileID];\n\n let opacityState = this.opacities[crossTileID];\n if (isDuplicate) {\n opacityState = duplicateOpacityState;\n } else if (!opacityState) {\n opacityState = defaultOpacityState;\n // store the state so that future placements use it as a starting point\n this.opacities[crossTileID] = opacityState;\n }\n\n seenCrossTileIDs[crossTileID] = true;\n\n const hasText = numHorizontalGlyphVertices > 0 || numVerticalGlyphVertices > 0;\n const hasIcon = symbolInstance.numIconVertices > 0;\n\n const placedOrientation = this.placedOrientations[symbolInstance.crossTileID];\n const horizontalHidden = placedOrientation === WritingMode.vertical;\n const verticalHidden = placedOrientation === WritingMode.horizontal || placedOrientation === WritingMode.horizontalOnly;\n\n if (hasText) {\n const packedOpacity = packOpacity(opacityState.text);\n // Vertical text fades in/out on collision the same way as corresponding\n // horizontal text. Switch between vertical/horizontal should be instantaneous\n const horizontalOpacity = horizontalHidden ? PACKED_HIDDEN_OPACITY : packedOpacity;\n addOpacities(bucket.text, numHorizontalGlyphVertices, horizontalOpacity);\n const verticalOpacity = verticalHidden ? PACKED_HIDDEN_OPACITY : packedOpacity;\n addOpacities(bucket.text, numVerticalGlyphVertices, verticalOpacity);\n\n // If this label is completely faded, mark it so that we don't have to calculate\n // its position at render time. If this layer has variable placement, shift the various\n // symbol instances appropriately so that symbols from buckets that have yet to be placed\n // offset appropriately.\n const symbolHidden = opacityState.text.isHidden();\n [\n symbolInstance.rightJustifiedTextSymbolIndex,\n symbolInstance.centerJustifiedTextSymbolIndex,\n symbolInstance.leftJustifiedTextSymbolIndex\n ].forEach(index => {\n if (index >= 0) {\n bucket.text.placedSymbolArray.get(index).hidden = symbolHidden || horizontalHidden ? 1 : 0;\n }\n });\n\n if (symbolInstance.verticalPlacedTextSymbolIndex >= 0) {\n bucket.text.placedSymbolArray.get(symbolInstance.verticalPlacedTextSymbolIndex).hidden = symbolHidden || verticalHidden ? 1 : 0;\n }\n\n const prevOffset = this.variableOffsets[symbolInstance.crossTileID];\n if (prevOffset) {\n this.markUsedJustification(bucket, prevOffset.anchor, symbolInstance, placedOrientation);\n }\n\n const prevOrientation = this.placedOrientations[symbolInstance.crossTileID];\n if (prevOrientation) {\n this.markUsedJustification(bucket, 'left', symbolInstance, prevOrientation);\n this.markUsedOrientation(bucket, prevOrientation, symbolInstance);\n }\n }\n\n if (hasIcon) {\n const packedOpacity = packOpacity(opacityState.icon);\n\n const useHorizontal = !(hasIconTextFit && symbolInstance.verticalPlacedIconSymbolIndex && horizontalHidden);\n\n if (symbolInstance.placedIconSymbolIndex >= 0) {\n const horizontalOpacity = useHorizontal ? packedOpacity : PACKED_HIDDEN_OPACITY;\n addOpacities(bucket.icon, symbolInstance.numIconVertices, horizontalOpacity);\n bucket.icon.placedSymbolArray.get(symbolInstance.placedIconSymbolIndex).hidden =\n (opacityState.icon.isHidden() as any);\n }\n\n if (symbolInstance.verticalPlacedIconSymbolIndex >= 0) {\n const verticalOpacity = !useHorizontal ? packedOpacity : PACKED_HIDDEN_OPACITY;\n addOpacities(bucket.icon, symbolInstance.numVerticalIconVertices, verticalOpacity);\n bucket.icon.placedSymbolArray.get(symbolInstance.verticalPlacedIconSymbolIndex).hidden =\n (opacityState.icon.isHidden() as any);\n }\n }\n\n const realBoxes = (boxArrays && boxArrays.has(s)) ? boxArrays.get(s) : {\n text: null,\n icon: null\n };\n\n if (bucket.hasIconCollisionBoxData() || bucket.hasTextCollisionBoxData()) {\n const collisionArrays = bucket.collisionArrays[s];\n if (collisionArrays) {\n let shift = new Point(0, 0);\n if (collisionArrays.textBox || collisionArrays.verticalTextBox) {\n let used = true;\n if (hasVariablePlacement) {\n const variableOffset = this.variableOffsets[crossTileID];\n if (variableOffset) {\n // This will show either the currently placed position or the last\n // successfully placed position (so you can visualize what collision\n // just made the symbol disappear, and the most likely place for the\n // symbol to come back)\n shift = calculateVariableLayoutShift(variableOffset.anchor,\n variableOffset.width,\n variableOffset.height,\n variableOffset.textOffset,\n variableOffset.textBoxScale);\n if (rotateWithMap) {\n shift._rotate(pitchWithMap ? -this.transform.bearingInRadians : this.transform.bearingInRadians);\n }\n } else {\n // No offset -> this symbol hasn't been placed since coming on-screen\n // No single box is particularly meaningful and all of them would be too noisy\n // Use the center box just to show something's there, but mark it \"not used\"\n used = false;\n }\n }\n\n if (collisionArrays.textBox || collisionArrays.verticalTextBox) {\n let hidden: boolean;\n if (collisionArrays.textBox) {\n hidden = horizontalHidden;\n }\n if (collisionArrays.verticalTextBox) {\n hidden = verticalHidden;\n }\n updateCollisionVertices(bucket.textCollisionBox.collisionVertexArray, opacityState.text.placed, !used || hidden, realBoxes.text, shift.x, shift.y);\n }\n }\n\n if (collisionArrays.iconBox || collisionArrays.verticalIconBox) {\n const verticalIconUsed = Boolean(!verticalHidden && collisionArrays.verticalIconBox);\n let hidden: boolean;\n if (collisionArrays.iconBox) {\n hidden = verticalIconUsed;\n }\n if (collisionArrays.verticalIconBox) {\n hidden = !verticalIconUsed;\n }\n updateCollisionVertices(bucket.iconCollisionBox.collisionVertexArray, opacityState.icon.placed, hidden, realBoxes.icon,\n hasIconTextFit ? shift.x : 0,\n hasIconTextFit ? shift.y : 0);\n }\n }\n }\n }\n\n bucket.sortFeatures(-this.transform.bearingInRadians);\n if (this.retainedQueryData[bucket.bucketInstanceId]) {\n this.retainedQueryData[bucket.bucketInstanceId].featureSortOrder = bucket.featureSortOrder;\n }\n\n if (bucket.hasTextData() && bucket.text.opacityVertexBuffer) {\n bucket.text.opacityVertexBuffer.updateData(bucket.text.opacityVertexArray);\n }\n if (bucket.hasIconData() && bucket.icon.opacityVertexBuffer) {\n bucket.icon.opacityVertexBuffer.updateData(bucket.icon.opacityVertexArray);\n }\n if (bucket.hasIconCollisionBoxData() && bucket.iconCollisionBox.collisionVertexBuffer) {\n bucket.iconCollisionBox.collisionVertexBuffer.updateData(bucket.iconCollisionBox.collisionVertexArray);\n }\n if (bucket.hasTextCollisionBoxData() && bucket.textCollisionBox.collisionVertexBuffer) {\n bucket.textCollisionBox.collisionVertexBuffer.updateData(bucket.textCollisionBox.collisionVertexArray);\n }\n\n if (bucket.text.opacityVertexArray.length !== bucket.text.layoutVertexArray.length / 4) throw new Error(`bucket.text.opacityVertexArray.length (= ${bucket.text.opacityVertexArray.length}) !== bucket.text.layoutVertexArray.length (= ${bucket.text.layoutVertexArray.length}) / 4`);\n if (bucket.icon.opacityVertexArray.length !== bucket.icon.layoutVertexArray.length / 4) throw new Error(`bucket.icon.opacityVertexArray.length (= ${bucket.icon.opacityVertexArray.length}) !== bucket.icon.layoutVertexArray.length (= ${bucket.icon.layoutVertexArray.length}) / 4`);\n\n // Push generated collision circles to the bucket for debug rendering\n if (bucket.bucketInstanceId in this.collisionCircleArrays) {\n bucket.collisionCircleArray = this.collisionCircleArrays[bucket.bucketInstanceId];\n delete this.collisionCircleArrays[bucket.bucketInstanceId];\n }\n }\n\n symbolFadeChange(now: number) {\n return this.fadeDuration === 0 ?\n 1 :\n ((now - this.commitTime) / this.fadeDuration + this.prevZoomAdjustment);\n }\n\n zoomAdjustment(zoom: number) {\n // When zooming out quickly, labels can overlap each other. This\n // adjustment is used to reduce the interval between placement calculations\n // and to reduce the fade duration when zooming out quickly. Discovering the\n // collisions more quickly and fading them more quickly reduces the unwanted effect.\n return Math.max(0, (this.transform.zoom - zoom) / 1.5);\n }\n\n hasTransitions(now: number) {\n return this.stale ||\n now - this.lastPlacementChangeTime < this.fadeDuration;\n }\n\n stillRecent(now: number, zoom: number) {\n // The adjustment makes placement more frequent when zooming.\n // This condition applies the adjustment only after the map has\n // stopped zooming. This avoids adding extra jank while zooming.\n const durationAdjustment = this.zoomAtLastRecencyCheck === zoom ?\n (1 - this.zoomAdjustment(zoom)) :\n 1;\n this.zoomAtLastRecencyCheck = zoom;\n\n return this.commitTime + this.fadeDuration * durationAdjustment > now;\n }\n\n setStale() {\n this.stale = true;\n }\n}\n\nfunction updateCollisionVertices(collisionVertexArray: CollisionVertexArray, placed: boolean, notUsed: boolean | number, realBox: Array, shiftX?: number, shiftY?: number) {\n if (!realBox || realBox.length === 0) {\n realBox = [0, 0, 0, 0];\n }\n\n const tlX = realBox[0] - viewportPadding;\n const tlY = realBox[1] - viewportPadding;\n const brX = realBox[2] - viewportPadding;\n const brY = realBox[3] - viewportPadding;\n\n collisionVertexArray.emplaceBack(placed ? 1 : 0, notUsed ? 1 : 0, shiftX || 0, shiftY || 0, tlX, tlY);\n collisionVertexArray.emplaceBack(placed ? 1 : 0, notUsed ? 1 : 0, shiftX || 0, shiftY || 0, brX, tlY);\n collisionVertexArray.emplaceBack(placed ? 1 : 0, notUsed ? 1 : 0, shiftX || 0, shiftY || 0, brX, brY);\n collisionVertexArray.emplaceBack(placed ? 1 : 0, notUsed ? 1 : 0, shiftX || 0, shiftY || 0, tlX, brY);\n}\n\n// All four vertices for a glyph will have the same opacity state\n// So we pack the opacity into a uint8, and then repeat it four times\n// to make a single uint32 that we can upload for each glyph in the\n// label.\nconst shift25 = Math.pow(2, 25);\nconst shift24 = Math.pow(2, 24);\nconst shift17 = Math.pow(2, 17);\nconst shift16 = Math.pow(2, 16);\nconst shift9 = Math.pow(2, 9);\nconst shift8 = Math.pow(2, 8);\nconst shift1 = Math.pow(2, 1);\nfunction packOpacity(opacityState: OpacityState): number {\n if (opacityState.opacity === 0 && !opacityState.placed) {\n return 0;\n } else if (opacityState.opacity === 1 && opacityState.placed) {\n return 4294967295;\n }\n const targetBit = opacityState.placed ? 1 : 0;\n const opacityBits = Math.floor(opacityState.opacity * 127);\n return opacityBits * shift25 + targetBit * shift24 +\n opacityBits * shift17 + targetBit * shift16 +\n opacityBits * shift9 + targetBit * shift8 +\n opacityBits * shift1 + targetBit;\n}\n\nconst PACKED_HIDDEN_OPACITY = 0;\n","import {browser} from '../util/browser';\nimport {Placement} from '../symbol/placement';\nimport type {ITransform} from '../geo/transform_interface';\nimport type {StyleLayer} from './style_layer';\nimport type {SymbolStyleLayer} from './style_layer/symbol_style_layer';\nimport type {Tile} from '../source/tile';\nimport type {BucketPart} from '../symbol/placement';\nimport type {Terrain} from '../render/terrain';\n\nclass LayerPlacement {\n _sortAcrossTiles: boolean;\n _currentTileIndex: number;\n _currentPartIndex: number;\n _seenCrossTileIDs: {\n [k in string | number]: boolean;\n };\n _bucketParts: Array;\n\n constructor(styleLayer: SymbolStyleLayer) {\n this._sortAcrossTiles = styleLayer.layout.get('symbol-z-order') !== 'viewport-y' &&\n !styleLayer.layout.get('symbol-sort-key').isConstant();\n\n this._currentTileIndex = 0;\n this._currentPartIndex = 0;\n this._seenCrossTileIDs = {};\n this._bucketParts = [];\n }\n\n continuePlacement(tiles: Array, placement: Placement, showCollisionBoxes: boolean, styleLayer: StyleLayer, shouldPausePlacement: () => boolean) {\n\n const bucketParts = this._bucketParts;\n\n while (this._currentTileIndex < tiles.length) {\n const tile = tiles[this._currentTileIndex];\n placement.getBucketParts(bucketParts, styleLayer, tile, this._sortAcrossTiles);\n\n this._currentTileIndex++;\n if (shouldPausePlacement()) {\n return true;\n }\n }\n\n if (this._sortAcrossTiles) {\n this._sortAcrossTiles = false;\n bucketParts.sort((a, b) => (a.sortKey as any as number) - (b.sortKey as any as number));\n }\n\n while (this._currentPartIndex < bucketParts.length) {\n const bucketPart = bucketParts[this._currentPartIndex];\n placement.placeLayerBucketPart(bucketPart, this._seenCrossTileIDs, showCollisionBoxes);\n\n this._currentPartIndex++;\n if (shouldPausePlacement()) {\n return true;\n }\n }\n return false;\n }\n}\n\nexport class PauseablePlacement {\n placement: Placement;\n _done: boolean;\n _currentPlacementIndex: number;\n _forceFullPlacement: boolean;\n _showCollisionBoxes: boolean;\n _inProgressLayer: LayerPlacement;\n\n constructor(\n transform: ITransform,\n terrain: Terrain,\n order: Array,\n forceFullPlacement: boolean,\n showCollisionBoxes: boolean,\n fadeDuration: number,\n crossSourceCollisions: boolean,\n prevPlacement?: Placement\n ) {\n this.placement = new Placement(transform, terrain, fadeDuration, crossSourceCollisions, prevPlacement);\n this._currentPlacementIndex = order.length - 1;\n this._forceFullPlacement = forceFullPlacement;\n this._showCollisionBoxes = showCollisionBoxes;\n this._done = false;\n }\n\n isDone() {\n return this._done;\n }\n\n continuePlacement(\n order: Array,\n layers: {[_: string]: StyleLayer},\n layerTiles: {[_: string]: Array}\n ) {\n const startTime = browser.now();\n\n const shouldPausePlacement = () => {\n return this._forceFullPlacement ? false : (browser.now() - startTime) > 2;\n };\n\n while (this._currentPlacementIndex >= 0) {\n const layerId = order[this._currentPlacementIndex];\n const layer = layers[layerId];\n const placementZoom = this.placement.collisionIndex.transform.zoom;\n if (layer.type === 'symbol' &&\n (!layer.minzoom || layer.minzoom <= placementZoom) &&\n (!layer.maxzoom || layer.maxzoom > placementZoom)) {\n\n if (!this._inProgressLayer) {\n this._inProgressLayer = new LayerPlacement(layer as any as SymbolStyleLayer);\n }\n\n const pausePlacement = this._inProgressLayer.continuePlacement(layerTiles[layer.source], this.placement, this._showCollisionBoxes, layer, shouldPausePlacement);\n\n if (pausePlacement) {\n // We didn't finish placing all layers within 2ms,\n // but we can keep rendering with a partial placement\n // We'll resume here on the next frame\n return;\n }\n\n delete this._inProgressLayer;\n }\n\n this._currentPlacementIndex--;\n }\n\n this._done = true;\n }\n\n commit(now: number) {\n this.placement.commit(now);\n return this.placement;\n }\n}\n","import KDBush from 'kdbush';\nimport {EXTENT} from '../data/extent';\n\nimport {type SymbolInstanceArray} from '../data/array_types.g';\n\nimport type {SymbolInstance} from '../data/array_types.g';\nimport type {OverscaledTileID} from '../source/tile_id';\nimport type {SymbolBucket} from '../data/bucket/symbol_bucket';\nimport type {StyleLayer} from '../style/style_layer';\nimport type {Tile} from '../source/tile';\n\n/*\n The CrossTileSymbolIndex generally works on the assumption that\n a conceptual \"unique symbol\" can be identified by the text of\n the label combined with the anchor point. The goal is to assign\n these conceptual \"unique symbols\" a shared crossTileID that can be\n used by Placement to keep fading opacity states consistent and to\n deduplicate labels.\n\n The CrossTileSymbolIndex indexes all the current symbol instances and\n their crossTileIDs. When a symbol bucket gets added or updated, the\n index assigns a crossTileID to each of it's symbol instances by either\n matching it with an existing id or assigning a new one.\n*/\n\n// Round anchor positions to roughly 4 pixel grid\nconst roundingFactor = 512 / EXTENT / 2;\n\nexport const KDBUSH_THRESHHOLD = 128;\n\ninterface SymbolsByKeyEntry {\n index?: KDBush;\n positions?: {x: number; y: number}[];\n crossTileIDs: number[];\n}\n\nclass TileLayerIndex {\n _symbolsByKey: Record = {};\n\n constructor(public tileID: OverscaledTileID, symbolInstances: SymbolInstanceArray, public bucketInstanceId: number) {\n // group the symbolInstances by key\n const symbolInstancesByKey = new Map();\n for (let i = 0; i < symbolInstances.length; i++) {\n const symbolInstance = symbolInstances.get(i);\n const key = symbolInstance.key;\n const instances = symbolInstancesByKey.get(key);\n if (instances) {\n // This tile may have multiple symbol instances with the same key\n // Store each one along with its coordinates\n instances.push(symbolInstance);\n } else {\n symbolInstancesByKey.set(key, [symbolInstance]);\n }\n }\n\n // index the SymbolInstances in this each bucket\n for (const [key, symbols] of symbolInstancesByKey) {\n const positions = symbols.map(symbolInstance => ({x: Math.floor(symbolInstance.anchorX * roundingFactor), y: Math.floor(symbolInstance.anchorY * roundingFactor)}));\n const crossTileIDs = symbols.map(v => v.crossTileID);\n const entry: SymbolsByKeyEntry = {positions, crossTileIDs};\n\n // once we get too many symbols for a given key, it becomes much faster to index it before queries\n if (entry.positions.length > KDBUSH_THRESHHOLD) {\n\n const index = new KDBush(entry.positions.length, 16, Uint16Array);\n for (const {x, y} of entry.positions) index.add(x, y);\n index.finish();\n\n // clear all references to the original positions data\n delete entry.positions;\n entry.index = index;\n }\n\n this._symbolsByKey[key] = entry;\n }\n }\n\n // Converts the coordinates of the input symbol instance into coordinates that be can compared\n // against other symbols in this index. Coordinates are:\n // (1) local-tile-based (so after correction we get x,y values relative to our local anchorX/Y)\n // (2) converted to the z-scale of this TileLayerIndex\n // (3) down-sampled by \"roundingFactor\" from tile coordinate precision in order to be\n // more tolerant of small differences between tiles.\n getScaledCoordinates(symbolInstance: SymbolInstance, childTileID: OverscaledTileID): {x: number; y: number} {\n const {x: localX, y: localY, z: localZ} = this.tileID.canonical;\n const {x, y, z} = childTileID.canonical;\n\n const zDifference = z - localZ;\n const scale = roundingFactor / Math.pow(2, zDifference);\n const xWorld = (x * EXTENT + symbolInstance.anchorX) * scale;\n const yWorld = (y * EXTENT + symbolInstance.anchorY) * scale;\n const xOffset = localX * EXTENT * roundingFactor;\n const yOffset = localY * EXTENT * roundingFactor;\n const result = {\n x: Math.floor(xWorld - xOffset),\n y: Math.floor(yWorld - yOffset)\n };\n\n return result;\n }\n\n findMatches(symbolInstances: SymbolInstanceArray, newTileID: OverscaledTileID, zoomCrossTileIDs: {\n [crossTileID: number]: boolean;\n }) {\n const tolerance = this.tileID.canonical.z < newTileID.canonical.z ? 1 : Math.pow(2, this.tileID.canonical.z - newTileID.canonical.z);\n\n for (let i = 0; i < symbolInstances.length; i++) {\n const symbolInstance = symbolInstances.get(i);\n if (symbolInstance.crossTileID) {\n // already has a match, skip\n continue;\n }\n\n const entry = this._symbolsByKey[symbolInstance.key];\n if (!entry) {\n // No symbol with this key in this bucket\n continue;\n }\n\n const scaledSymbolCoord = this.getScaledCoordinates(symbolInstance, newTileID);\n\n if (entry.index) {\n // Return any symbol with the same keys whose coordinates are within 1\n // grid unit. (with a 4px grid, this covers a 12px by 12px area)\n const indexes = entry.index.range(\n scaledSymbolCoord.x - tolerance,\n scaledSymbolCoord.y - tolerance,\n scaledSymbolCoord.x + tolerance,\n scaledSymbolCoord.y + tolerance).sort();\n\n for (const i of indexes) {\n const crossTileID = entry.crossTileIDs[i];\n\n if (!zoomCrossTileIDs[crossTileID]) {\n // Once we've marked ourselves duplicate against this parent symbol,\n // don't let any other symbols at the same zoom level duplicate against\n // the same parent (see issue #5993)\n zoomCrossTileIDs[crossTileID] = true;\n symbolInstance.crossTileID = crossTileID;\n break;\n }\n }\n } else if (entry.positions) {\n for (let i = 0; i < entry.positions.length; i++) {\n const thisTileSymbol = entry.positions[i];\n const crossTileID = entry.crossTileIDs[i];\n\n // Return any symbol with the same keys whose coordinates are within 1\n // grid unit. (with a 4px grid, this covers a 12px by 12px area)\n if (Math.abs(thisTileSymbol.x - scaledSymbolCoord.x) <= tolerance &&\n Math.abs(thisTileSymbol.y - scaledSymbolCoord.y) <= tolerance &&\n !zoomCrossTileIDs[crossTileID]) {\n // Once we've marked ourselves duplicate against this parent symbol,\n // don't let any other symbols at the same zoom level duplicate against\n // the same parent (see issue #5993)\n zoomCrossTileIDs[crossTileID] = true;\n symbolInstance.crossTileID = crossTileID;\n break;\n }\n }\n }\n }\n }\n\n getCrossTileIDsLists() {\n return Object.values(this._symbolsByKey).map(({crossTileIDs}) => crossTileIDs);\n }\n}\n\nclass CrossTileIDs {\n maxCrossTileID: number;\n constructor() {\n this.maxCrossTileID = 0;\n }\n generate() {\n return ++this.maxCrossTileID;\n }\n}\n\nclass CrossTileSymbolLayerIndex {\n indexes: {\n [zoom in string | number]: {\n [tileId in string | number]: TileLayerIndex;\n };\n };\n usedCrossTileIDs: {\n [zoom in string | number]: {\n [crossTileID: number]: boolean;\n };\n };\n lng: number;\n\n constructor() {\n this.indexes = {};\n this.usedCrossTileIDs = {};\n this.lng = 0;\n }\n\n /*\n * Sometimes when a user pans across the antimeridian the longitude value gets wrapped.\n * To prevent labels from flashing out and in we adjust the tileID values in the indexes\n * so that they match the new wrapped version of the map.\n */\n handleWrapJump(lng: number) {\n const wrapDelta = Math.round((lng - this.lng) / 360);\n if (wrapDelta !== 0) {\n for (const zoom in this.indexes) {\n const zoomIndexes = this.indexes[zoom];\n const newZoomIndex = {};\n for (const key in zoomIndexes) {\n // change the tileID's wrap and add it to a new index\n const index = zoomIndexes[key];\n index.tileID = index.tileID.unwrapTo(index.tileID.wrap + wrapDelta);\n newZoomIndex[index.tileID.key] = index;\n }\n this.indexes[zoom] = newZoomIndex;\n }\n }\n this.lng = lng;\n }\n\n addBucket(tileID: OverscaledTileID, bucket: SymbolBucket, crossTileIDs: CrossTileIDs) {\n if (this.indexes[tileID.overscaledZ] &&\n this.indexes[tileID.overscaledZ][tileID.key]) {\n if (this.indexes[tileID.overscaledZ][tileID.key].bucketInstanceId ===\n bucket.bucketInstanceId) {\n return false;\n } else {\n // We're replacing this bucket with an updated version\n // Remove the old bucket's \"used crossTileIDs\" now so that\n // the new bucket can claim them.\n // The old index entries themselves stick around until\n // 'removeStaleBuckets' is called.\n this.removeBucketCrossTileIDs(tileID.overscaledZ,\n this.indexes[tileID.overscaledZ][tileID.key]);\n }\n }\n\n for (let i = 0; i < bucket.symbolInstances.length; i++) {\n const symbolInstance = bucket.symbolInstances.get(i);\n symbolInstance.crossTileID = 0;\n }\n\n if (!this.usedCrossTileIDs[tileID.overscaledZ]) {\n this.usedCrossTileIDs[tileID.overscaledZ] = {};\n }\n const zoomCrossTileIDs = this.usedCrossTileIDs[tileID.overscaledZ];\n\n for (const zoom in this.indexes) {\n const zoomIndexes = this.indexes[zoom];\n if (Number(zoom) > tileID.overscaledZ) {\n for (const id in zoomIndexes) {\n const childIndex = zoomIndexes[id];\n if (childIndex.tileID.isChildOf(tileID)) {\n childIndex.findMatches(bucket.symbolInstances, tileID, zoomCrossTileIDs);\n }\n }\n } else {\n const parentCoord = tileID.scaledTo(Number(zoom));\n const parentIndex = zoomIndexes[parentCoord.key];\n if (parentIndex) {\n parentIndex.findMatches(bucket.symbolInstances, tileID, zoomCrossTileIDs);\n }\n }\n }\n\n for (let i = 0; i < bucket.symbolInstances.length; i++) {\n const symbolInstance = bucket.symbolInstances.get(i);\n if (!symbolInstance.crossTileID) {\n // symbol did not match any known symbol, assign a new id\n symbolInstance.crossTileID = crossTileIDs.generate();\n zoomCrossTileIDs[symbolInstance.crossTileID] = true;\n }\n }\n\n if (this.indexes[tileID.overscaledZ] === undefined) {\n this.indexes[tileID.overscaledZ] = {};\n }\n this.indexes[tileID.overscaledZ][tileID.key] = new TileLayerIndex(tileID, bucket.symbolInstances, bucket.bucketInstanceId);\n\n return true;\n }\n\n removeBucketCrossTileIDs(zoom: string | number, removedBucket: TileLayerIndex) {\n for (const crossTileIDs of removedBucket.getCrossTileIDsLists()) {\n for (const crossTileID of crossTileIDs) {\n delete this.usedCrossTileIDs[zoom][crossTileID];\n }\n }\n }\n\n removeStaleBuckets(currentIDs: {\n [k in string | number]: boolean;\n }) {\n let tilesChanged = false;\n for (const z in this.indexes) {\n const zoomIndexes = this.indexes[z];\n for (const tileKey in zoomIndexes) {\n if (!currentIDs[zoomIndexes[tileKey].bucketInstanceId]) {\n this.removeBucketCrossTileIDs(z, zoomIndexes[tileKey]);\n delete zoomIndexes[tileKey];\n tilesChanged = true;\n }\n }\n }\n return tilesChanged;\n }\n}\n\nexport class CrossTileSymbolIndex {\n layerIndexes: {[layerId: string]: CrossTileSymbolLayerIndex};\n crossTileIDs: CrossTileIDs;\n maxBucketInstanceId: number;\n bucketsInCurrentPlacement: {[_: number]: boolean};\n\n constructor() {\n this.layerIndexes = {};\n this.crossTileIDs = new CrossTileIDs();\n this.maxBucketInstanceId = 0;\n this.bucketsInCurrentPlacement = {};\n }\n\n addLayer(styleLayer: StyleLayer, tiles: Array, lng: number) {\n let layerIndex = this.layerIndexes[styleLayer.id];\n if (layerIndex === undefined) {\n layerIndex = this.layerIndexes[styleLayer.id] = new CrossTileSymbolLayerIndex();\n }\n\n let symbolBucketsChanged = false;\n const currentBucketIDs = {};\n\n layerIndex.handleWrapJump(lng);\n\n for (const tile of tiles) {\n const symbolBucket = (tile.getBucket(styleLayer) as any as SymbolBucket);\n if (!symbolBucket || styleLayer.id !== symbolBucket.layerIds[0])\n continue;\n\n if (!symbolBucket.bucketInstanceId) {\n symbolBucket.bucketInstanceId = ++this.maxBucketInstanceId;\n }\n\n if (layerIndex.addBucket(tile.tileID, symbolBucket, this.crossTileIDs)) {\n symbolBucketsChanged = true;\n }\n currentBucketIDs[symbolBucket.bucketInstanceId] = true;\n }\n\n if (layerIndex.removeStaleBuckets(currentBucketIDs)) {\n symbolBucketsChanged = true;\n }\n\n return symbolBucketsChanged;\n }\n\n pruneUnusedLayers(usedLayers: Array) {\n const usedLayerMap = {};\n usedLayers.forEach((usedLayer) => {\n usedLayerMap[usedLayer] = true;\n });\n for (const layerId in this.layerIndexes) {\n if (!usedLayerMap[layerId]) {\n delete this.layerIndexes[layerId];\n }\n }\n }\n}\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default '#ifdef GL_ES\\nprecision mediump float;\\n#else\\n#if !defined(lowp)\\n#define lowp\\n#endif\\n#if !defined(mediump)\\n#define mediump\\n#endif\\n#if !defined(highp)\\n#define highp\\n#endif\\n#endif\\n';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default 'void main() {gl_FragColor=vec4(1.0);}';\n","\n// Disable Flow annotations here because Flow doesn't support importing GLSL files\n\nimport preludeFrag from './_prelude.fragment.glsl.g';\nimport preludeVert from './_prelude.vertex.glsl.g';\nimport backgroundFrag from './background.fragment.glsl.g';\nimport backgroundVert from './background.vertex.glsl.g';\nimport backgroundPatternFrag from './background_pattern.fragment.glsl.g';\nimport backgroundPatternVert from './background_pattern.vertex.glsl.g';\nimport circleFrag from './circle.fragment.glsl.g';\nimport circleVert from './circle.vertex.glsl.g';\nimport clippingMaskFrag from './clipping_mask.fragment.glsl.g';\nimport clippingMaskVert from './clipping_mask.vertex.glsl.g';\nimport heatmapFrag from './heatmap.fragment.glsl.g';\nimport heatmapVert from './heatmap.vertex.glsl.g';\nimport heatmapTextureFrag from './heatmap_texture.fragment.glsl.g';\nimport heatmapTextureVert from './heatmap_texture.vertex.glsl.g';\nimport collisionBoxFrag from './collision_box.fragment.glsl.g';\nimport collisionBoxVert from './collision_box.vertex.glsl.g';\nimport collisionCircleFrag from './collision_circle.fragment.glsl.g';\nimport collisionCircleVert from './collision_circle.vertex.glsl.g';\nimport debugFrag from './debug.fragment.glsl.g';\nimport debugVert from './debug.vertex.glsl.g';\nimport depthVert from './depth.vertex.glsl.g';\nimport fillFrag from './fill.fragment.glsl.g';\nimport fillVert from './fill.vertex.glsl.g';\nimport fillOutlineFrag from './fill_outline.fragment.glsl.g';\nimport fillOutlineVert from './fill_outline.vertex.glsl.g';\nimport fillOutlinePatternFrag from './fill_outline_pattern.fragment.glsl.g';\nimport fillOutlinePatternVert from './fill_outline_pattern.vertex.glsl.g';\nimport fillPatternFrag from './fill_pattern.fragment.glsl.g';\nimport fillPatternVert from './fill_pattern.vertex.glsl.g';\nimport fillExtrusionFrag from './fill_extrusion.fragment.glsl.g';\nimport fillExtrusionVert from './fill_extrusion.vertex.glsl.g';\nimport fillExtrusionPatternFrag from './fill_extrusion_pattern.fragment.glsl.g';\nimport fillExtrusionPatternVert from './fill_extrusion_pattern.vertex.glsl.g';\nimport hillshadePrepareFrag from './hillshade_prepare.fragment.glsl.g';\nimport hillshadePrepareVert from './hillshade_prepare.vertex.glsl.g';\nimport hillshadeFrag from './hillshade.fragment.glsl.g';\nimport hillshadeVert from './hillshade.vertex.glsl.g';\nimport lineFrag from './line.fragment.glsl.g';\nimport lineVert from './line.vertex.glsl.g';\nimport lineGradientFrag from './line_gradient.fragment.glsl.g';\nimport lineGradientVert from './line_gradient.vertex.glsl.g';\nimport linePatternFrag from './line_pattern.fragment.glsl.g';\nimport linePatternVert from './line_pattern.vertex.glsl.g';\nimport lineSDFFrag from './line_sdf.fragment.glsl.g';\nimport lineSDFVert from './line_sdf.vertex.glsl.g';\nimport rasterFrag from './raster.fragment.glsl.g';\nimport rasterVert from './raster.vertex.glsl.g';\nimport symbolIconFrag from './symbol_icon.fragment.glsl.g';\nimport symbolIconVert from './symbol_icon.vertex.glsl.g';\nimport symbolSDFFrag from './symbol_sdf.fragment.glsl.g';\nimport symbolSDFVert from './symbol_sdf.vertex.glsl.g';\nimport symbolTextAndIconFrag from './symbol_text_and_icon.fragment.glsl.g';\nimport symbolTextAndIconVert from './symbol_text_and_icon.vertex.glsl.g';\nimport terrainDepthFrag from './terrain_depth.fragment.glsl.g';\nimport terrainCoordsFrag from './terrain_coords.fragment.glsl.g';\nimport terrainFrag from './terrain.fragment.glsl.g';\nimport terrainVert from './terrain.vertex.glsl.g';\nimport terrainVertDepth from './terrain_depth.vertex.glsl.g';\nimport terrainVertCoords from './terrain_coords.vertex.glsl.g';\nimport projectionErrorMeasurementVert from './projection_error_measurement.vertex.glsl.g';\nimport projectionErrorMeasurementFrag from './projection_error_measurement.fragment.glsl.g';\nimport projectionMercatorVert from './_projection_mercator.vertex.glsl.g';\nimport projectionGlobeVert from './_projection_globe.vertex.glsl.g';\nimport atmosphereFrag from './atmosphere.fragment.glsl.g';\nimport atmosphereVert from './atmosphere.vertex.glsl.g';\nimport skyFrag from './sky.fragment.glsl.g';\nimport skyVert from './sky.vertex.glsl.g';\n\nexport type PreparedShader = {\n fragmentSource: string;\n vertexSource: string;\n staticAttributes: Array;\n staticUniforms: Array;\n};\n\nexport const shaders = {\n prelude: compile(preludeFrag, preludeVert),\n projectionMercator: compile('', projectionMercatorVert),\n projectionGlobe: compile('', projectionGlobeVert),\n background: compile(backgroundFrag, backgroundVert),\n backgroundPattern: compile(backgroundPatternFrag, backgroundPatternVert),\n circle: compile(circleFrag, circleVert),\n clippingMask: compile(clippingMaskFrag, clippingMaskVert),\n heatmap: compile(heatmapFrag, heatmapVert),\n heatmapTexture: compile(heatmapTextureFrag, heatmapTextureVert),\n collisionBox: compile(collisionBoxFrag, collisionBoxVert),\n collisionCircle: compile(collisionCircleFrag, collisionCircleVert),\n debug: compile(debugFrag, debugVert),\n depth: compile(clippingMaskFrag, depthVert),\n fill: compile(fillFrag, fillVert),\n fillOutline: compile(fillOutlineFrag, fillOutlineVert),\n fillOutlinePattern: compile(fillOutlinePatternFrag, fillOutlinePatternVert),\n fillPattern: compile(fillPatternFrag, fillPatternVert),\n fillExtrusion: compile(fillExtrusionFrag, fillExtrusionVert),\n fillExtrusionPattern: compile(fillExtrusionPatternFrag, fillExtrusionPatternVert),\n hillshadePrepare: compile(hillshadePrepareFrag, hillshadePrepareVert),\n hillshade: compile(hillshadeFrag, hillshadeVert),\n line: compile(lineFrag, lineVert),\n lineGradient: compile(lineGradientFrag, lineGradientVert),\n linePattern: compile(linePatternFrag, linePatternVert),\n lineSDF: compile(lineSDFFrag, lineSDFVert),\n raster: compile(rasterFrag, rasterVert),\n symbolIcon: compile(symbolIconFrag, symbolIconVert),\n symbolSDF: compile(symbolSDFFrag, symbolSDFVert),\n symbolTextAndIcon: compile(symbolTextAndIconFrag, symbolTextAndIconVert),\n terrain: compile(terrainFrag, terrainVert),\n terrainDepth: compile(terrainDepthFrag, terrainVertDepth),\n terrainCoords: compile(terrainCoordsFrag, terrainVertCoords),\n projectionErrorMeasurement: compile(projectionErrorMeasurementFrag, projectionErrorMeasurementVert),\n atmosphere: compile(atmosphereFrag, atmosphereVert),\n sky: compile(skyFrag, skyVert),\n};\n\n// Expand #pragmas to #ifdefs.\n\nfunction compile(fragmentSource: string, vertexSource: string): PreparedShader {\n const re = /#pragma mapbox: ([\\w]+) ([\\w]+) ([\\w]+) ([\\w]+)/g;\n\n const staticAttributes = vertexSource.match(/attribute ([\\w]+) ([\\w]+)/g);\n const fragmentUniforms = fragmentSource.match(/uniform ([\\w]+) ([\\w]+)([\\s]*)([\\w]*)/g);\n const vertexUniforms = vertexSource.match(/uniform ([\\w]+) ([\\w]+)([\\s]*)([\\w]*)/g);\n const staticUniforms = vertexUniforms ? vertexUniforms.concat(fragmentUniforms) : fragmentUniforms;\n\n const fragmentPragmas = {};\n\n fragmentSource = fragmentSource.replace(re, (match, operation, precision, type, name) => {\n fragmentPragmas[name] = true;\n if (operation === 'define') {\n return `\n#ifndef HAS_UNIFORM_u_${name}\nvarying ${precision} ${type} ${name};\n#else\nuniform ${precision} ${type} u_${name};\n#endif\n`;\n } else /* if (operation === 'initialize') */ {\n return `\n#ifdef HAS_UNIFORM_u_${name}\n ${precision} ${type} ${name} = u_${name};\n#endif\n`;\n }\n });\n\n vertexSource = vertexSource.replace(re, (match, operation, precision, type, name) => {\n const attrType = type === 'float' ? 'vec2' : 'vec4';\n const unpackType = name.match(/color/) ? 'color' : attrType;\n\n if (fragmentPragmas[name]) {\n if (operation === 'define') {\n return `\n#ifndef HAS_UNIFORM_u_${name}\nuniform lowp float u_${name}_t;\nattribute ${precision} ${attrType} a_${name};\nvarying ${precision} ${type} ${name};\n#else\nuniform ${precision} ${type} u_${name};\n#endif\n`;\n } else /* if (operation === 'initialize') */ {\n if (unpackType === 'vec4') {\n // vec4 attributes are only used for cross-faded properties, and are not packed\n return `\n#ifndef HAS_UNIFORM_u_${name}\n ${name} = a_${name};\n#else\n ${precision} ${type} ${name} = u_${name};\n#endif\n`;\n } else {\n return `\n#ifndef HAS_UNIFORM_u_${name}\n ${name} = unpack_mix_${unpackType}(a_${name}, u_${name}_t);\n#else\n ${precision} ${type} ${name} = u_${name};\n#endif\n`;\n }\n }\n } else {\n if (operation === 'define') {\n return `\n#ifndef HAS_UNIFORM_u_${name}\nuniform lowp float u_${name}_t;\nattribute ${precision} ${attrType} a_${name};\n#else\nuniform ${precision} ${type} u_${name};\n#endif\n`;\n } else /* if (operation === 'initialize') */ {\n if (unpackType === 'vec4') {\n // vec4 attributes are only used for cross-faded properties, and are not packed\n return `\n#ifndef HAS_UNIFORM_u_${name}\n ${precision} ${type} ${name} = a_${name};\n#else\n ${precision} ${type} ${name} = u_${name};\n#endif\n`;\n } else /* */ {\n return `\n#ifndef HAS_UNIFORM_u_${name}\n ${precision} ${type} ${name} = unpack_mix_${unpackType}(a_${name}, u_${name}_t);\n#else\n ${precision} ${type} ${name} = u_${name};\n#endif\n`;\n }\n }\n }\n });\n\n return {fragmentSource, vertexSource, staticAttributes, staticUniforms};\n}\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default '#ifdef GL_ES\\nprecision highp float;\\n#else\\n#if !defined(lowp)\\n#define lowp\\n#endif\\n#if !defined(mediump)\\n#define mediump\\n#endif\\n#if !defined(highp)\\n#define highp\\n#endif\\n#endif\\nvec2 unpack_float(const float packedValue) {int packedIntValue=int(packedValue);int v0=packedIntValue/256;return vec2(v0,packedIntValue-v0*256);}vec2 unpack_opacity(const float packedOpacity) {int intOpacity=int(packedOpacity)/2;return vec2(float(intOpacity)/127.0,mod(packedOpacity,2.0));}vec4 decode_color(const vec2 encodedColor) {return vec4(unpack_float(encodedColor[0])/255.0,unpack_float(encodedColor[1])/255.0\\n);}float unpack_mix_vec2(const vec2 packedValue,const float t) {return mix(packedValue[0],packedValue[1],t);}vec4 unpack_mix_color(const vec4 packedColors,const float t) {vec4 minColor=decode_color(vec2(packedColors[0],packedColors[1]));vec4 maxColor=decode_color(vec2(packedColors[2],packedColors[3]));return mix(minColor,maxColor,t);}vec2 get_pattern_pos(const vec2 pixel_coord_upper,const vec2 pixel_coord_lower,const vec2 pattern_size,const float tile_units_to_pixels,const vec2 pos) {vec2 offset=mod(mod(mod(pixel_coord_upper,pattern_size)*256.0,pattern_size)*256.0+pixel_coord_lower,pattern_size);return (tile_units_to_pixels*pos+offset)/pattern_size;}mat3 rotationMatrixFromAxisAngle(vec3 u,float angle) {float c=cos(angle);float s=sin(angle);float c2=1.0-c;return mat3(u.x*u.x*c2+ c,u.x*u.y*c2-u.z*s,u.x*u.z*c2+u.y*s,u.y*u.x*c2+u.z*s,u.y*u.y*c2+ c,u.y*u.z*c2-u.x*s,u.z*u.x*c2-u.y*s,u.z*u.y*c2+u.x*s,u.z*u.z*c2+ c\\n);}\\n#ifdef TERRAIN3D\\nuniform sampler2D u_terrain;uniform float u_terrain_dim;uniform mat4 u_terrain_matrix;uniform vec4 u_terrain_unpack;uniform float u_terrain_exaggeration;uniform highp sampler2D u_depth;\\n#endif\\nconst highp vec4 bitSh=vec4(256.*256.*256.,256.*256.,256.,1.);const highp vec4 bitShifts=vec4(1.)/bitSh;highp float unpack(highp vec4 color) {return dot(color,bitShifts);}highp float depthOpacity(vec3 frag) {\\n#ifdef TERRAIN3D\\nhighp float d=unpack(texture2D(u_depth,frag.xy*0.5+0.5))+0.0001-frag.z;return 1.0-max(0.0,min(1.0,-d*500.0));\\n#else\\nreturn 1.0;\\n#endif\\n}float calculate_visibility(vec4 pos) {\\n#ifdef TERRAIN3D\\nvec3 frag=pos.xyz/pos.w;highp float d=depthOpacity(frag);if (d > 0.95) return 1.0;return (d+depthOpacity(frag+vec3(0.0,0.01,0.0)))/2.0;\\n#else\\nreturn 1.0;\\n#endif\\n}float ele(vec2 pos) {\\n#ifdef TERRAIN3D\\nvec4 rgb=(texture2D(u_terrain,pos)*255.0)*u_terrain_unpack;return rgb.r+rgb.g+rgb.b-u_terrain_unpack.a;\\n#else\\nreturn 0.0;\\n#endif\\n}float get_elevation(vec2 pos) {\\n#ifdef TERRAIN3D\\nvec2 coord=(u_terrain_matrix*vec4(pos,0.0,1.0)).xy*u_terrain_dim+1.0;vec2 f=fract(coord);vec2 c=(floor(coord)+0.5)/(u_terrain_dim+2.0);float d=1.0/(u_terrain_dim+2.0);float tl=ele(c);float tr=ele(c+vec2(d,0.0));float bl=ele(c+vec2(0.0,d));float br=ele(c+vec2(d,d));float elevation=mix(mix(tl,tr,f.x),mix(bl,br,f.x),f.y);return elevation*u_terrain_exaggeration;\\n#else\\nreturn 0.0;\\n#endif\\n}const float PI=3.141592653589793;uniform mat4 u_projection_matrix;';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default 'float projectLineThickness(float tileY) {return 1.0;}float projectCircleRadius(float tileY) {return 1.0;}vec4 projectTile(vec2 p) {vec4 result=u_projection_matrix*vec4(p,0.0,1.0);return result;}vec4 projectTile(vec2 p,vec2 rawPos) {vec4 result=u_projection_matrix*vec4(p,0.0,1.0);if (rawPos.y <-32767.5 || rawPos.y > 32766.5) {result.z=-10000000.0;}return result;}vec4 projectTileWithElevation(vec2 posInTile,float elevation) {return u_projection_matrix*vec4(posInTile,elevation,1.0);}vec4 projectTileFor3D(vec2 posInTile,float elevation) {return projectTileWithElevation(posInTile,elevation);}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default '#define GLOBE_RADIUS 6371008.8\\nuniform highp vec4 u_projection_tile_mercator_coords;uniform highp vec4 u_projection_clipping_plane;uniform highp float u_projection_transition;uniform mat4 u_projection_fallback_matrix;vec3 globeRotateVector(vec3 vec,vec2 angles) {vec3 axisRight=vec3(vec.z,0.0,-vec.x);vec3 axisUp=cross(axisRight,vec);axisRight=normalize(axisRight);axisUp=normalize(axisUp);vec2 t=tan(angles);return normalize(vec+axisRight*t.x+axisUp*t.y);}mat3 globeGetRotationMatrix(vec3 spherePos) {vec3 axisRight=vec3(spherePos.z,0.0,-spherePos.x);vec3 axisDown=cross(axisRight,spherePos);axisRight=normalize(axisRight);axisDown=normalize(axisDown);return mat3(axisRight,axisDown,spherePos\\n);}float circumferenceRatioAtTileY(float tileY) {float mercator_pos_y=u_projection_tile_mercator_coords.y+u_projection_tile_mercator_coords.w*tileY;float spherical_y=2.0*atan(exp(PI-(mercator_pos_y*PI*2.0)))-PI*0.5;return cos(spherical_y);}float projectLineThickness(float tileY) {float thickness=1.0/circumferenceRatioAtTileY(tileY); \\nif (u_projection_transition < 0.999) {return mix(1.0,thickness,u_projection_transition);} else {return thickness;}}vec3 projectToSphere(vec2 posInTile,vec2 rawPos) {vec2 mercator_pos=u_projection_tile_mercator_coords.xy+u_projection_tile_mercator_coords.zw*posInTile;vec2 spherical;spherical.x=mercator_pos.x*PI*2.0+PI;spherical.y=2.0*atan(exp(PI-(mercator_pos.y*PI*2.0)))-PI*0.5;float len=cos(spherical.y);vec3 pos=vec3(sin(spherical.x)*len,sin(spherical.y),cos(spherical.x)*len\\n);if (rawPos.y <-32767.5) {pos=vec3(0.0,1.0,0.0);}if (rawPos.y > 32766.5) {pos=vec3(0.0,-1.0,0.0);}return pos;}vec3 projectToSphere(vec2 posInTile) {return projectToSphere(posInTile,vec2(0.0,0.0));}float globeComputeClippingZ(vec3 spherePos) {return (1.0-(dot(spherePos,u_projection_clipping_plane.xyz)+u_projection_clipping_plane.w));}vec4 interpolateProjection(vec2 posInTile,vec3 spherePos,float elevation) {vec3 elevatedPos=spherePos*(1.0+elevation/GLOBE_RADIUS);vec4 globePosition=u_projection_matrix*vec4(elevatedPos,1.0);globePosition.z=globeComputeClippingZ(elevatedPos)*globePosition.w;if (u_projection_transition < 0.999) {vec4 flatPosition=u_projection_fallback_matrix*vec4(posInTile,elevation,1.0);const float z_globeness_threshold=0.2;vec4 result=globePosition;result.z=mix(0.0,globePosition.z,clamp((u_projection_transition-z_globeness_threshold)/(1.0-z_globeness_threshold),0.0,1.0));result.xyw=mix(flatPosition.xyw,globePosition.xyw,u_projection_transition);if ((posInTile.y <-32767.5) || (posInTile.y > 32766.5)) {result=globePosition;const float poles_hidden_anim_percentage=0.02;result.z=mix(globePosition.z,100.0,pow(max((1.0-u_projection_transition)/poles_hidden_anim_percentage,0.0),8.0));}return result;}return globePosition;}vec4 interpolateProjectionFor3D(vec2 posInTile,vec3 spherePos,float elevation) {vec3 elevatedPos=spherePos*(1.0+elevation/GLOBE_RADIUS);vec4 globePosition=u_projection_matrix*vec4(elevatedPos,1.0);vec4 fallbackPosition=u_projection_fallback_matrix*vec4(posInTile,elevation,1.0);return mix(fallbackPosition,globePosition,u_projection_transition);}vec4 projectTile(vec2 posInTile) {return interpolateProjection(posInTile,projectToSphere(posInTile),0.0);}vec4 projectTile(vec2 posInTile,vec2 rawPos) {return interpolateProjection(posInTile,projectToSphere(posInTile,rawPos),0.0);}vec4 projectTileWithElevation(vec2 posInTile,float elevation) {return interpolateProjection(posInTile,projectToSphere(posInTile),elevation);}vec4 projectTileFor3D(vec2 posInTile,float elevation) {vec3 spherePos=projectToSphere(posInTile);return interpolateProjectionFor3D(posInTile,spherePos,elevation);}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default 'uniform vec4 u_color;uniform float u_opacity;void main() {gl_FragColor=u_color*u_opacity;\\n#ifdef OVERDRAW_INSPECTOR\\ngl_FragColor=vec4(1.0);\\n#endif\\n}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default 'attribute vec2 a_pos;void main() {gl_Position=projectTile(a_pos);}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default 'uniform vec2 u_pattern_tl_a;uniform vec2 u_pattern_br_a;uniform vec2 u_pattern_tl_b;uniform vec2 u_pattern_br_b;uniform vec2 u_texsize;uniform float u_mix;uniform float u_opacity;uniform sampler2D u_image;varying vec2 v_pos_a;varying vec2 v_pos_b;void main() {vec2 imagecoord=mod(v_pos_a,1.0);vec2 pos=mix(u_pattern_tl_a/u_texsize,u_pattern_br_a/u_texsize,imagecoord);vec4 color1=texture2D(u_image,pos);vec2 imagecoord_b=mod(v_pos_b,1.0);vec2 pos2=mix(u_pattern_tl_b/u_texsize,u_pattern_br_b/u_texsize,imagecoord_b);vec4 color2=texture2D(u_image,pos2);gl_FragColor=mix(color1,color2,u_mix)*u_opacity;\\n#ifdef OVERDRAW_INSPECTOR\\ngl_FragColor=vec4(1.0);\\n#endif\\n}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default 'uniform vec2 u_pattern_size_a;uniform vec2 u_pattern_size_b;uniform vec2 u_pixel_coord_upper;uniform vec2 u_pixel_coord_lower;uniform float u_scale_a;uniform float u_scale_b;uniform float u_tile_units_to_pixels;attribute vec2 a_pos;varying vec2 v_pos_a;varying vec2 v_pos_b;void main() {gl_Position=projectTile(a_pos);v_pos_a=get_pattern_pos(u_pixel_coord_upper,u_pixel_coord_lower,u_scale_a*u_pattern_size_a,u_tile_units_to_pixels,a_pos);v_pos_b=get_pattern_pos(u_pixel_coord_upper,u_pixel_coord_lower,u_scale_b*u_pattern_size_b,u_tile_units_to_pixels,a_pos);}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default 'varying vec3 v_data;varying float v_visibility;\\n#pragma mapbox: define highp vec4 color\\n#pragma mapbox: define mediump float radius\\n#pragma mapbox: define lowp float blur\\n#pragma mapbox: define lowp float opacity\\n#pragma mapbox: define highp vec4 stroke_color\\n#pragma mapbox: define mediump float stroke_width\\n#pragma mapbox: define lowp float stroke_opacity\\nvoid main() {\\n#pragma mapbox: initialize highp vec4 color\\n#pragma mapbox: initialize mediump float radius\\n#pragma mapbox: initialize lowp float blur\\n#pragma mapbox: initialize lowp float opacity\\n#pragma mapbox: initialize highp vec4 stroke_color\\n#pragma mapbox: initialize mediump float stroke_width\\n#pragma mapbox: initialize lowp float stroke_opacity\\nvec2 extrude=v_data.xy;float extrude_length=length(extrude);float antialiased_blur=v_data.z;float opacity_t=smoothstep(0.0,antialiased_blur,extrude_length-1.0);float color_t=stroke_width < 0.01 ? 0.0 : smoothstep(antialiased_blur,0.0,extrude_length-radius/(radius+stroke_width));gl_FragColor=v_visibility*opacity_t*mix(color*opacity,stroke_color*stroke_opacity,color_t);const float epsilon=0.5/255.0;if (gl_FragColor.r < epsilon && gl_FragColor.g < epsilon && gl_FragColor.b < epsilon && gl_FragColor.a < epsilon) {discard;}\\n#ifdef OVERDRAW_INSPECTOR\\ngl_FragColor=vec4(1.0);\\n#endif\\n}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default 'uniform bool u_scale_with_map;uniform bool u_pitch_with_map;uniform vec2 u_extrude_scale;uniform highp float u_globe_extrude_scale;uniform lowp float u_device_pixel_ratio;uniform highp float u_camera_to_center_distance;uniform vec2 u_translate;attribute vec2 a_pos;varying vec3 v_data;varying float v_visibility;\\n#pragma mapbox: define highp vec4 color\\n#pragma mapbox: define mediump float radius\\n#pragma mapbox: define lowp float blur\\n#pragma mapbox: define lowp float opacity\\n#pragma mapbox: define highp vec4 stroke_color\\n#pragma mapbox: define mediump float stroke_width\\n#pragma mapbox: define lowp float stroke_opacity\\nvoid main(void) {\\n#pragma mapbox: initialize highp vec4 color\\n#pragma mapbox: initialize mediump float radius\\n#pragma mapbox: initialize lowp float blur\\n#pragma mapbox: initialize lowp float opacity\\n#pragma mapbox: initialize highp vec4 stroke_color\\n#pragma mapbox: initialize mediump float stroke_width\\n#pragma mapbox: initialize lowp float stroke_opacity\\nvec2 pos_raw=a_pos+32768.0;vec2 extrude=vec2(mod(pos_raw,8.0)/7.0*2.0-1.0);vec2 circle_center=floor(pos_raw/8.0)+u_translate;float ele=get_elevation(circle_center);v_visibility=calculate_visibility(projectTileWithElevation(circle_center,ele));if (u_pitch_with_map) {\\n#ifdef GLOBE\\nvec3 center_vector=projectToSphere(circle_center);\\n#endif\\nfloat angle_scale=u_globe_extrude_scale;vec2 corner_position=circle_center;if (u_scale_with_map) {angle_scale*=(radius+stroke_width);corner_position+=extrude*u_extrude_scale*(radius+stroke_width);} else {\\n#ifdef GLOBE\\nvec4 projected_center=interpolateProjection(circle_center,center_vector,ele);\\n#else\\nvec4 projected_center=projectTileWithElevation(circle_center,ele);\\n#endif\\ncorner_position+=extrude*u_extrude_scale*(radius+stroke_width)*(projected_center.w/u_camera_to_center_distance);angle_scale*=(radius+stroke_width)*(projected_center.w/u_camera_to_center_distance);}\\n#ifdef GLOBE\\nvec2 angles=extrude*angle_scale;vec3 corner_vector=globeRotateVector(center_vector,angles);gl_Position=interpolateProjection(corner_position,corner_vector,ele);\\n#else\\ngl_Position=projectTileWithElevation(corner_position,ele);\\n#endif\\n} else {gl_Position=projectTileWithElevation(circle_center,ele);if (gl_Position.z/gl_Position.w > 1.0) {gl_Position.xy=vec2(10000.0);}if (u_scale_with_map) {gl_Position.xy+=extrude*(radius+stroke_width)*u_extrude_scale*u_camera_to_center_distance;} else {gl_Position.xy+=extrude*(radius+stroke_width)*u_extrude_scale*gl_Position.w;}}float antialiasblur=-max(1.0/u_device_pixel_ratio/(radius+stroke_width),blur);v_data=vec3(extrude.x,extrude.y,antialiasblur);}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default 'attribute vec2 a_pos;void main() {gl_Position=projectTile(a_pos);}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default 'uniform highp float u_intensity;varying vec2 v_extrude;\\n#pragma mapbox: define highp float weight\\n#define GAUSS_COEF 0.3989422804014327\\nvoid main() {\\n#pragma mapbox: initialize highp float weight\\nfloat d=-0.5*3.0*3.0*dot(v_extrude,v_extrude);float val=weight*u_intensity*GAUSS_COEF*exp(d);gl_FragColor=vec4(val,1.0,1.0,1.0);\\n#ifdef OVERDRAW_INSPECTOR\\ngl_FragColor=vec4(1.0);\\n#endif\\n}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default 'uniform float u_extrude_scale;uniform float u_opacity;uniform float u_intensity;uniform highp float u_globe_extrude_scale;attribute vec2 a_pos;varying vec2 v_extrude;\\n#pragma mapbox: define highp float weight\\n#pragma mapbox: define mediump float radius\\nconst highp float ZERO=1.0/255.0/16.0;\\n#define GAUSS_COEF 0.3989422804014327\\nvoid main(void) {\\n#pragma mapbox: initialize highp float weight\\n#pragma mapbox: initialize mediump float radius\\nvec2 pos_raw=a_pos+32768.0;vec2 unscaled_extrude=vec2(mod(pos_raw,8.0)/7.0*2.0-1.0);float S=sqrt(-2.0*log(ZERO/weight/u_intensity/GAUSS_COEF))/3.0;v_extrude=S*unscaled_extrude;vec2 extrude=v_extrude*radius*u_extrude_scale;vec2 circle_center=floor(pos_raw/8.0);\\n#ifdef GLOBE\\nvec2 angles=v_extrude*radius*u_globe_extrude_scale;vec3 center_vector=projectToSphere(circle_center);vec3 corner_vector=globeRotateVector(center_vector,angles);gl_Position=interpolateProjection(circle_center+extrude,corner_vector,0.0);\\n#else\\ngl_Position=projectTileFor3D(circle_center+extrude,get_elevation(circle_center));\\n#endif\\n}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default 'uniform sampler2D u_image;uniform sampler2D u_color_ramp;uniform float u_opacity;varying vec2 v_pos;void main() {float t=texture2D(u_image,v_pos).r;vec4 color=texture2D(u_color_ramp,vec2(t,0.5));gl_FragColor=color*u_opacity;\\n#ifdef OVERDRAW_INSPECTOR\\ngl_FragColor=vec4(0.0);\\n#endif\\n}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default 'uniform mat4 u_matrix;uniform vec2 u_world;attribute vec2 a_pos;varying vec2 v_pos;void main() {gl_Position=u_matrix*vec4(a_pos*u_world,0,1);v_pos.x=a_pos.x;v_pos.y=1.0-a_pos.y;}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default 'varying float v_placed;varying float v_notUsed;void main() {float alpha=0.5;gl_FragColor=vec4(1.0,0.0,0.0,1.0)*alpha;if (v_placed > 0.5) {gl_FragColor=vec4(0.0,0.0,1.0,0.5)*alpha;}if (v_notUsed > 0.5) {gl_FragColor*=.1;}}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default 'attribute vec2 a_anchor_pos;attribute vec2 a_placed;attribute vec2 a_box_real;uniform vec2 u_pixel_extrude_scale;varying float v_placed;varying float v_notUsed;void main() {gl_Position=projectTileWithElevation(a_anchor_pos,get_elevation(a_anchor_pos));gl_Position.xy=((a_box_real+0.5)*u_pixel_extrude_scale*2.0-1.0)*vec2(1.0,-1.0)*gl_Position.w;if (gl_Position.z/gl_Position.w < 1.1) {gl_Position.z=0.5;}v_placed=a_placed.x;v_notUsed=a_placed.y;}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default 'varying float v_radius;varying vec2 v_extrude;varying float v_collision;void main() {float alpha=0.5;float stroke_radius=0.9;float distance_to_center=length(v_extrude);float distance_to_edge=abs(distance_to_center-v_radius);float opacity_t=smoothstep(-stroke_radius,0.0,-distance_to_edge);vec4 color=mix(vec4(0.0,0.0,1.0,0.5),vec4(1.0,0.0,0.0,1.0),v_collision);gl_FragColor=color*alpha*opacity_t;}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default 'attribute vec2 a_pos;attribute float a_radius;attribute vec2 a_flags;uniform vec2 u_viewport_size;varying float v_radius;varying vec2 v_extrude;varying float v_collision;void main() {float radius=a_radius;float collision=a_flags.x;float vertexIdx=a_flags.y;vec2 quadVertexOffset=vec2(mix(-1.0,1.0,float(vertexIdx >=2.0)),mix(-1.0,1.0,float(vertexIdx >=1.0 && vertexIdx <=2.0)));vec2 quadVertexExtent=quadVertexOffset*radius;float padding_factor=1.2;v_radius=radius;v_extrude=quadVertexExtent*padding_factor;v_collision=collision;gl_Position=vec4((a_pos/u_viewport_size*2.0-1.0)*vec2(1.0,-1.0),0.0,1.0)+vec4(quadVertexExtent*padding_factor/u_viewport_size*2.0,0.0,0.0);}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default 'uniform highp vec4 u_color;uniform sampler2D u_overlay;varying vec2 v_uv;void main() {vec4 overlay_color=texture2D(u_overlay,v_uv);gl_FragColor=mix(u_color,overlay_color,overlay_color.a);}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default 'attribute vec2 a_pos;varying vec2 v_uv;uniform float u_overlay_scale;void main() {v_uv=a_pos/8192.0;gl_Position=projectTileWithElevation(a_pos*u_overlay_scale,get_elevation(a_pos));}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default 'attribute vec2 a_pos;void main() {\\n#ifdef GLOBE\\ngl_Position=projectTileFor3D(a_pos,0.0);\\n#else\\ngl_Position=u_projection_matrix*vec4(a_pos,0.0,1.0);\\n#endif\\n}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default '#pragma mapbox: define highp vec4 color\\n#pragma mapbox: define lowp float opacity\\nvoid main() {\\n#pragma mapbox: initialize highp vec4 color\\n#pragma mapbox: initialize lowp float opacity\\ngl_FragColor=color*opacity;\\n#ifdef OVERDRAW_INSPECTOR\\ngl_FragColor=vec4(1.0);\\n#endif\\n}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default 'uniform vec2 u_fill_translate;attribute vec2 a_pos;\\n#pragma mapbox: define highp vec4 color\\n#pragma mapbox: define lowp float opacity\\nvoid main() {\\n#pragma mapbox: initialize highp vec4 color\\n#pragma mapbox: initialize lowp float opacity\\ngl_Position=projectTile(a_pos+u_fill_translate,a_pos);}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default 'varying vec2 v_pos;\\n#ifdef GLOBE\\nvarying float v_depth;\\n#endif\\n#pragma mapbox: define highp vec4 outline_color\\n#pragma mapbox: define lowp float opacity\\nvoid main() {\\n#pragma mapbox: initialize highp vec4 outline_color\\n#pragma mapbox: initialize lowp float opacity\\nfloat dist=length(v_pos-gl_FragCoord.xy);float alpha=1.0-smoothstep(0.0,1.0,dist);gl_FragColor=outline_color*(alpha*opacity);\\n#ifdef GLOBE\\nif (v_depth > 1.0) {discard;}\\n#endif\\n#ifdef OVERDRAW_INSPECTOR\\ngl_FragColor=vec4(1.0);\\n#endif\\n}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default 'uniform vec2 u_world;uniform vec2 u_fill_translate;attribute vec2 a_pos;varying vec2 v_pos;\\n#ifdef GLOBE\\nvarying float v_depth;\\n#endif\\n#pragma mapbox: define highp vec4 outline_color\\n#pragma mapbox: define lowp float opacity\\nvoid main() {\\n#pragma mapbox: initialize highp vec4 outline_color\\n#pragma mapbox: initialize lowp float opacity\\ngl_Position=projectTile(a_pos+u_fill_translate,a_pos);v_pos=(gl_Position.xy/gl_Position.w+1.0)/2.0*u_world;\\n#ifdef GLOBE\\nv_depth=gl_Position.z/gl_Position.w;\\n#endif\\n}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default 'uniform vec2 u_texsize;uniform sampler2D u_image;uniform float u_fade;varying vec2 v_pos_a;varying vec2 v_pos_b;varying vec2 v_pos;\\n#ifdef GLOBE\\nvarying float v_depth;\\n#endif\\n#pragma mapbox: define lowp float opacity\\n#pragma mapbox: define lowp vec4 pattern_from\\n#pragma mapbox: define lowp vec4 pattern_to\\nvoid main() {\\n#pragma mapbox: initialize lowp float opacity\\n#pragma mapbox: initialize mediump vec4 pattern_from\\n#pragma mapbox: initialize mediump vec4 pattern_to\\nvec2 pattern_tl_a=pattern_from.xy;vec2 pattern_br_a=pattern_from.zw;vec2 pattern_tl_b=pattern_to.xy;vec2 pattern_br_b=pattern_to.zw;vec2 imagecoord=mod(v_pos_a,1.0);vec2 pos=mix(pattern_tl_a/u_texsize,pattern_br_a/u_texsize,imagecoord);vec4 color1=texture2D(u_image,pos);vec2 imagecoord_b=mod(v_pos_b,1.0);vec2 pos2=mix(pattern_tl_b/u_texsize,pattern_br_b/u_texsize,imagecoord_b);vec4 color2=texture2D(u_image,pos2);float dist=length(v_pos-gl_FragCoord.xy);float alpha=1.0-smoothstep(0.0,1.0,dist);gl_FragColor=mix(color1,color2,u_fade)*alpha*opacity;\\n#ifdef GLOBE\\nif (v_depth > 1.0) {discard;}\\n#endif\\n#ifdef OVERDRAW_INSPECTOR\\ngl_FragColor=vec4(1.0);\\n#endif\\n}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default 'uniform vec2 u_world;uniform vec2 u_pixel_coord_upper;uniform vec2 u_pixel_coord_lower;uniform vec3 u_scale;uniform vec2 u_fill_translate;attribute vec2 a_pos;varying vec2 v_pos_a;varying vec2 v_pos_b;varying vec2 v_pos;\\n#ifdef GLOBE\\nvarying float v_depth;\\n#endif\\n#pragma mapbox: define lowp float opacity\\n#pragma mapbox: define lowp vec4 pattern_from\\n#pragma mapbox: define lowp vec4 pattern_to\\n#pragma mapbox: define lowp float pixel_ratio_from\\n#pragma mapbox: define lowp float pixel_ratio_to\\nvoid main() {\\n#pragma mapbox: initialize lowp float opacity\\n#pragma mapbox: initialize mediump vec4 pattern_from\\n#pragma mapbox: initialize mediump vec4 pattern_to\\n#pragma mapbox: initialize lowp float pixel_ratio_from\\n#pragma mapbox: initialize lowp float pixel_ratio_to\\nvec2 pattern_tl_a=pattern_from.xy;vec2 pattern_br_a=pattern_from.zw;vec2 pattern_tl_b=pattern_to.xy;vec2 pattern_br_b=pattern_to.zw;float tileRatio=u_scale.x;float fromScale=u_scale.y;float toScale=u_scale.z;gl_Position=projectTile(a_pos+u_fill_translate,a_pos);vec2 display_size_a=(pattern_br_a-pattern_tl_a)/pixel_ratio_from;vec2 display_size_b=(pattern_br_b-pattern_tl_b)/pixel_ratio_to;v_pos_a=get_pattern_pos(u_pixel_coord_upper,u_pixel_coord_lower,fromScale*display_size_a,tileRatio,a_pos);v_pos_b=get_pattern_pos(u_pixel_coord_upper,u_pixel_coord_lower,toScale*display_size_b,tileRatio,a_pos);v_pos=(gl_Position.xy/gl_Position.w+1.0)/2.0*u_world;\\n#ifdef GLOBE\\nv_depth=gl_Position.z/gl_Position.w;\\n#endif\\n}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default '#ifdef GL_ES\\nprecision highp float;\\n#endif\\nuniform vec2 u_texsize;uniform float u_fade;uniform sampler2D u_image;varying vec2 v_pos_a;varying vec2 v_pos_b;\\n#pragma mapbox: define lowp float opacity\\n#pragma mapbox: define lowp vec4 pattern_from\\n#pragma mapbox: define lowp vec4 pattern_to\\nvoid main() {\\n#pragma mapbox: initialize lowp float opacity\\n#pragma mapbox: initialize mediump vec4 pattern_from\\n#pragma mapbox: initialize mediump vec4 pattern_to\\nvec2 pattern_tl_a=pattern_from.xy;vec2 pattern_br_a=pattern_from.zw;vec2 pattern_tl_b=pattern_to.xy;vec2 pattern_br_b=pattern_to.zw;vec2 imagecoord=mod(v_pos_a,1.0);vec2 pos=mix(pattern_tl_a/u_texsize,pattern_br_a/u_texsize,imagecoord);vec4 color1=texture2D(u_image,pos);vec2 imagecoord_b=mod(v_pos_b,1.0);vec2 pos2=mix(pattern_tl_b/u_texsize,pattern_br_b/u_texsize,imagecoord_b);vec4 color2=texture2D(u_image,pos2);gl_FragColor=mix(color1,color2,u_fade)*opacity;\\n#ifdef OVERDRAW_INSPECTOR\\ngl_FragColor=vec4(1.0);\\n#endif\\n}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default 'uniform vec2 u_pixel_coord_upper;uniform vec2 u_pixel_coord_lower;uniform vec3 u_scale;uniform vec2 u_fill_translate;attribute vec2 a_pos;varying vec2 v_pos_a;varying vec2 v_pos_b;\\n#pragma mapbox: define lowp float opacity\\n#pragma mapbox: define lowp vec4 pattern_from\\n#pragma mapbox: define lowp vec4 pattern_to\\n#pragma mapbox: define lowp float pixel_ratio_from\\n#pragma mapbox: define lowp float pixel_ratio_to\\nvoid main() {\\n#pragma mapbox: initialize lowp float opacity\\n#pragma mapbox: initialize mediump vec4 pattern_from\\n#pragma mapbox: initialize mediump vec4 pattern_to\\n#pragma mapbox: initialize lowp float pixel_ratio_from\\n#pragma mapbox: initialize lowp float pixel_ratio_to\\nvec2 pattern_tl_a=pattern_from.xy;vec2 pattern_br_a=pattern_from.zw;vec2 pattern_tl_b=pattern_to.xy;vec2 pattern_br_b=pattern_to.zw;float tileZoomRatio=u_scale.x;float fromScale=u_scale.y;float toScale=u_scale.z;vec2 display_size_a=(pattern_br_a-pattern_tl_a)/pixel_ratio_from;vec2 display_size_b=(pattern_br_b-pattern_tl_b)/pixel_ratio_to;gl_Position=projectTile(a_pos+u_fill_translate,a_pos);v_pos_a=get_pattern_pos(u_pixel_coord_upper,u_pixel_coord_lower,fromScale*display_size_a,tileZoomRatio,a_pos);v_pos_b=get_pattern_pos(u_pixel_coord_upper,u_pixel_coord_lower,toScale*display_size_b,tileZoomRatio,a_pos);}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default 'varying vec4 v_color;void main() {gl_FragColor=v_color;\\n#ifdef OVERDRAW_INSPECTOR\\ngl_FragColor=vec4(1.0);\\n#endif\\n}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default 'uniform vec3 u_lightcolor;uniform lowp vec3 u_lightpos;uniform lowp vec3 u_lightpos_globe;uniform lowp float u_lightintensity;uniform float u_vertical_gradient;uniform lowp float u_opacity;uniform vec2 u_fill_translate;attribute vec2 a_pos;attribute vec4 a_normal_ed;\\n#ifdef TERRAIN3D\\nattribute vec2 a_centroid;\\n#endif\\nvarying vec4 v_color;\\n#pragma mapbox: define highp float base\\n#pragma mapbox: define highp float height\\n#pragma mapbox: define highp vec4 color\\nvoid main() {\\n#pragma mapbox: initialize highp float base\\n#pragma mapbox: initialize highp float height\\n#pragma mapbox: initialize highp vec4 color\\nvec3 normal=a_normal_ed.xyz;\\n#ifdef TERRAIN3D\\nfloat height_terrain3d_offset=get_elevation(a_centroid);float base_terrain3d_offset=height_terrain3d_offset-(base > 0.0 ? 0.0 : 10.0);\\n#else\\nfloat height_terrain3d_offset=0.0;float base_terrain3d_offset=0.0;\\n#endif\\nbase=max(0.0,base)+base_terrain3d_offset;height=max(0.0,height)+height_terrain3d_offset;float t=mod(normal.x,2.0);float elevation=t > 0.0 ? height : base;vec2 posInTile=a_pos+u_fill_translate;\\n#ifdef GLOBE\\nvec3 spherePos=projectToSphere(posInTile,a_pos);gl_Position=interpolateProjectionFor3D(posInTile,spherePos,elevation);\\n#else\\ngl_Position=u_projection_matrix*vec4(posInTile,elevation,1.0);\\n#endif\\nfloat colorvalue=color.r*0.2126+color.g*0.7152+color.b*0.0722;v_color=vec4(0.0,0.0,0.0,1.0);vec4 ambientlight=vec4(0.03,0.03,0.03,1.0);color+=ambientlight;vec3 normalForLighting=normal/16384.0;float directional=clamp(dot(normalForLighting,u_lightpos),0.0,1.0);\\n#ifdef GLOBE\\nmat3 rotMatrix=globeGetRotationMatrix(spherePos);normalForLighting=rotMatrix*normalForLighting;directional=mix(directional,clamp(dot(normalForLighting,u_lightpos_globe),0.0,1.0),u_projection_transition);\\n#endif\\ndirectional=mix((1.0-u_lightintensity),max((1.0-colorvalue+u_lightintensity),1.0),directional);if (normal.y !=0.0) {directional*=((1.0-u_vertical_gradient)+(u_vertical_gradient*clamp((t+base)*pow(height/150.0,0.5),mix(0.7,0.98,1.0-u_lightintensity),1.0)));}v_color.r+=clamp(color.r*directional*u_lightcolor.r,mix(0.0,0.3,1.0-u_lightcolor.r),1.0);v_color.g+=clamp(color.g*directional*u_lightcolor.g,mix(0.0,0.3,1.0-u_lightcolor.g),1.0);v_color.b+=clamp(color.b*directional*u_lightcolor.b,mix(0.0,0.3,1.0-u_lightcolor.b),1.0);v_color*=u_opacity;}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default 'uniform vec2 u_texsize;uniform float u_fade;uniform sampler2D u_image;varying vec2 v_pos_a;varying vec2 v_pos_b;varying vec4 v_lighting;\\n#pragma mapbox: define lowp float base\\n#pragma mapbox: define lowp float height\\n#pragma mapbox: define lowp vec4 pattern_from\\n#pragma mapbox: define lowp vec4 pattern_to\\n#pragma mapbox: define lowp float pixel_ratio_from\\n#pragma mapbox: define lowp float pixel_ratio_to\\nvoid main() {\\n#pragma mapbox: initialize lowp float base\\n#pragma mapbox: initialize lowp float height\\n#pragma mapbox: initialize mediump vec4 pattern_from\\n#pragma mapbox: initialize mediump vec4 pattern_to\\n#pragma mapbox: initialize lowp float pixel_ratio_from\\n#pragma mapbox: initialize lowp float pixel_ratio_to\\nvec2 pattern_tl_a=pattern_from.xy;vec2 pattern_br_a=pattern_from.zw;vec2 pattern_tl_b=pattern_to.xy;vec2 pattern_br_b=pattern_to.zw;vec2 imagecoord=mod(v_pos_a,1.0);vec2 pos=mix(pattern_tl_a/u_texsize,pattern_br_a/u_texsize,imagecoord);vec4 color1=texture2D(u_image,pos);vec2 imagecoord_b=mod(v_pos_b,1.0);vec2 pos2=mix(pattern_tl_b/u_texsize,pattern_br_b/u_texsize,imagecoord_b);vec4 color2=texture2D(u_image,pos2);vec4 mixedColor=mix(color1,color2,u_fade);gl_FragColor=mixedColor*v_lighting;\\n#ifdef OVERDRAW_INSPECTOR\\ngl_FragColor=vec4(1.0);\\n#endif\\n}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default 'uniform vec2 u_pixel_coord_upper;uniform vec2 u_pixel_coord_lower;uniform float u_height_factor;uniform vec3 u_scale;uniform float u_vertical_gradient;uniform lowp float u_opacity;uniform vec2 u_fill_translate;uniform vec3 u_lightcolor;uniform lowp vec3 u_lightpos;uniform lowp vec3 u_lightpos_globe;uniform lowp float u_lightintensity;attribute vec2 a_pos;attribute vec4 a_normal_ed;\\n#ifdef TERRAIN3D\\nattribute vec2 a_centroid;\\n#endif\\n#ifdef GLOBE\\nvarying vec3 v_sphere_pos;\\n#endif\\nvarying vec2 v_pos_a;varying vec2 v_pos_b;varying vec4 v_lighting;\\n#pragma mapbox: define lowp float base\\n#pragma mapbox: define lowp float height\\n#pragma mapbox: define lowp vec4 pattern_from\\n#pragma mapbox: define lowp vec4 pattern_to\\n#pragma mapbox: define lowp float pixel_ratio_from\\n#pragma mapbox: define lowp float pixel_ratio_to\\nvoid main() {\\n#pragma mapbox: initialize lowp float base\\n#pragma mapbox: initialize lowp float height\\n#pragma mapbox: initialize mediump vec4 pattern_from\\n#pragma mapbox: initialize mediump vec4 pattern_to\\n#pragma mapbox: initialize lowp float pixel_ratio_from\\n#pragma mapbox: initialize lowp float pixel_ratio_to\\nvec2 pattern_tl_a=pattern_from.xy;vec2 pattern_br_a=pattern_from.zw;vec2 pattern_tl_b=pattern_to.xy;vec2 pattern_br_b=pattern_to.zw;float tileRatio=u_scale.x;float fromScale=u_scale.y;float toScale=u_scale.z;vec3 normal=a_normal_ed.xyz;float edgedistance=a_normal_ed.w;vec2 display_size_a=(pattern_br_a-pattern_tl_a)/pixel_ratio_from;vec2 display_size_b=(pattern_br_b-pattern_tl_b)/pixel_ratio_to;\\n#ifdef TERRAIN3D\\nfloat height_terrain3d_offset=get_elevation(a_centroid);float base_terrain3d_offset=height_terrain3d_offset-(base > 0.0 ? 0.0 : 10.0);\\n#else\\nfloat height_terrain3d_offset=0.0;float base_terrain3d_offset=0.0;\\n#endif\\nbase=max(0.0,base)+base_terrain3d_offset;height=max(0.0,height)+height_terrain3d_offset;float t=mod(normal.x,2.0);float elevation=t > 0.0 ? height : base;vec2 posInTile=a_pos+u_fill_translate;\\n#ifdef GLOBE\\nvec3 spherePos=projectToSphere(posInTile,a_pos);vec3 elevatedPos=spherePos*(1.0+elevation/GLOBE_RADIUS);v_sphere_pos=elevatedPos;gl_Position=interpolateProjectionFor3D(posInTile,spherePos,elevation);\\n#else\\ngl_Position=u_projection_matrix*vec4(posInTile,elevation,1.0);\\n#endif\\nvec2 pos=normal.x==1.0 && normal.y==0.0 && normal.z==16384.0\\n? a_pos\\n: vec2(edgedistance,elevation*u_height_factor);v_pos_a=get_pattern_pos(u_pixel_coord_upper,u_pixel_coord_lower,fromScale*display_size_a,tileRatio,pos);v_pos_b=get_pattern_pos(u_pixel_coord_upper,u_pixel_coord_lower,toScale*display_size_b,tileRatio,pos);v_lighting=vec4(0.0,0.0,0.0,1.0);float directional=clamp(dot(normal/16383.0,u_lightpos),0.0,1.0);directional=mix((1.0-u_lightintensity),max((0.5+u_lightintensity),1.0),directional);if (normal.y !=0.0) {directional*=((1.0-u_vertical_gradient)+(u_vertical_gradient*clamp((t+base)*pow(height/150.0,0.5),mix(0.7,0.98,1.0-u_lightintensity),1.0)));}v_lighting.rgb+=clamp(directional*u_lightcolor,mix(vec3(0.0),vec3(0.3),1.0-u_lightcolor),vec3(1.0));v_lighting*=u_opacity;}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default '#ifdef GL_ES\\nprecision highp float;\\n#endif\\nuniform sampler2D u_image;varying vec2 v_pos;uniform vec2 u_dimension;uniform float u_zoom;uniform vec4 u_unpack;float getElevation(vec2 coord,float bias) {vec4 data=texture2D(u_image,coord)*255.0;data.a=-1.0;return dot(data,u_unpack)/4.0;}void main() {vec2 epsilon=1.0/u_dimension;float a=getElevation(v_pos+vec2(-epsilon.x,-epsilon.y),0.0);float b=getElevation(v_pos+vec2(0,-epsilon.y),0.0);float c=getElevation(v_pos+vec2(epsilon.x,-epsilon.y),0.0);float d=getElevation(v_pos+vec2(-epsilon.x,0),0.0);float e=getElevation(v_pos,0.0);float f=getElevation(v_pos+vec2(epsilon.x,0),0.0);float g=getElevation(v_pos+vec2(-epsilon.x,epsilon.y),0.0);float h=getElevation(v_pos+vec2(0,epsilon.y),0.0);float i=getElevation(v_pos+vec2(epsilon.x,epsilon.y),0.0);float exaggerationFactor=u_zoom < 2.0 ? 0.4 : u_zoom < 4.5 ? 0.35 : 0.3;float exaggeration=u_zoom < 15.0 ? (u_zoom-15.0)*exaggerationFactor : 0.0;vec2 deriv=vec2((c+f+f+i)-(a+d+d+g),(g+h+h+i)-(a+b+b+c))/pow(2.0,exaggeration+(19.2562-u_zoom));gl_FragColor=clamp(vec4(deriv.x/2.0+0.5,deriv.y/2.0+0.5,1.0,1.0),0.0,1.0);\\n#ifdef OVERDRAW_INSPECTOR\\ngl_FragColor=vec4(1.0);\\n#endif\\n}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default 'uniform mat4 u_matrix;uniform vec2 u_dimension;attribute vec2 a_pos;attribute vec2 a_texture_pos;varying vec2 v_pos;void main() {gl_Position=u_matrix*vec4(a_pos,0,1);highp vec2 epsilon=1.0/u_dimension;float scale=(u_dimension.x-2.0)/u_dimension.x;v_pos=(a_texture_pos/8192.0)*scale+epsilon;}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default 'uniform sampler2D u_image;varying vec2 v_pos;uniform vec2 u_latrange;uniform vec2 u_light;uniform vec4 u_shadow;uniform vec4 u_highlight;uniform vec4 u_accent;\\n#define PI 3.141592653589793\\nvoid main() {vec4 pixel=texture2D(u_image,v_pos);vec2 deriv=((pixel.rg*2.0)-1.0);float scaleFactor=cos(radians((u_latrange[0]-u_latrange[1])*(1.0-v_pos.y)+u_latrange[1]));float slope=atan(1.25*length(deriv)/scaleFactor);float aspect=deriv.x !=0.0 ? atan(deriv.y,-deriv.x) : PI/2.0*(deriv.y > 0.0 ? 1.0 :-1.0);float intensity=u_light.x;float azimuth=u_light.y+PI;float base=1.875-intensity*1.75;float maxValue=0.5*PI;float scaledSlope=intensity !=0.5 ? ((pow(base,slope)-1.0)/(pow(base,maxValue)-1.0))*maxValue : slope;float accent=cos(scaledSlope);vec4 accent_color=(1.0-accent)*u_accent*clamp(intensity*2.0,0.0,1.0);float shade=abs(mod((aspect+azimuth)/PI+0.5,2.0)-1.0);vec4 shade_color=mix(u_shadow,u_highlight,shade)*sin(scaledSlope)*clamp(intensity*2.0,0.0,1.0);gl_FragColor=accent_color*(1.0-shade_color.a)+shade_color;\\n#ifdef OVERDRAW_INSPECTOR\\ngl_FragColor=vec4(1.0);\\n#endif\\n}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default 'uniform mat4 u_matrix;attribute vec2 a_pos;varying vec2 v_pos;void main() {gl_Position=projectTile(a_pos,a_pos);v_pos=a_pos/8192.0;if (a_pos.y <-32767.5) {v_pos.y=0.0;}if (a_pos.y > 32766.5) {v_pos.y=1.0;}}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default 'uniform lowp float u_device_pixel_ratio;varying vec2 v_width2;varying vec2 v_normal;varying float v_gamma_scale;\\n#ifdef GLOBE\\nvarying float v_depth;\\n#endif\\n#pragma mapbox: define highp vec4 color\\n#pragma mapbox: define lowp float blur\\n#pragma mapbox: define lowp float opacity\\nvoid main() {\\n#pragma mapbox: initialize highp vec4 color\\n#pragma mapbox: initialize lowp float blur\\n#pragma mapbox: initialize lowp float opacity\\nfloat dist=length(v_normal)*v_width2.s;float blur2=(blur+1.0/u_device_pixel_ratio)*v_gamma_scale;float alpha=clamp(min(dist-(v_width2.t-blur2),v_width2.s-dist)/blur2,0.0,1.0);gl_FragColor=color*(alpha*opacity);\\n#ifdef GLOBE\\nif (v_depth > 1.0) {discard;}\\n#endif\\n#ifdef OVERDRAW_INSPECTOR\\ngl_FragColor=vec4(1.0);\\n#endif\\n}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default '\\n#define scale 0.015873016\\nattribute vec2 a_pos_normal;attribute vec4 a_data;uniform vec2 u_translation;uniform mediump float u_ratio;uniform vec2 u_units_to_pixels;uniform lowp float u_device_pixel_ratio;varying vec2 v_normal;varying vec2 v_width2;varying float v_gamma_scale;varying highp float v_linesofar;\\n#ifdef GLOBE\\nvarying float v_depth;\\n#endif\\n#pragma mapbox: define highp vec4 color\\n#pragma mapbox: define lowp float blur\\n#pragma mapbox: define lowp float opacity\\n#pragma mapbox: define mediump float gapwidth\\n#pragma mapbox: define lowp float offset\\n#pragma mapbox: define mediump float width\\nvoid main() {\\n#pragma mapbox: initialize highp vec4 color\\n#pragma mapbox: initialize lowp float blur\\n#pragma mapbox: initialize lowp float opacity\\n#pragma mapbox: initialize mediump float gapwidth\\n#pragma mapbox: initialize lowp float offset\\n#pragma mapbox: initialize mediump float width\\nfloat ANTIALIASING=1.0/u_device_pixel_ratio/2.0;vec2 a_extrude=a_data.xy-128.0;float a_direction=mod(a_data.z,4.0)-1.0;v_linesofar=(floor(a_data.z/4.0)+a_data.w*64.0)*2.0;vec2 pos=floor(a_pos_normal*0.5);mediump vec2 normal=a_pos_normal-2.0*pos;normal.y=normal.y*2.0-1.0;v_normal=normal;gapwidth=gapwidth/2.0;float halfwidth=width/2.0;offset=-1.0*offset;float inset=gapwidth+(gapwidth > 0.0 ? ANTIALIASING : 0.0);float outset=gapwidth+halfwidth*(gapwidth > 0.0 ? 2.0 : 1.0)+(halfwidth==0.0 ? 0.0 : ANTIALIASING);mediump vec2 dist=outset*a_extrude*scale;mediump float u=0.5*a_direction;mediump float t=1.0-abs(u);mediump vec2 offset2=offset*a_extrude*scale*normal.y*mat2(t,-u,u,t);float adjustedThickness=projectLineThickness(pos.y);vec4 projected_no_extrude=projectTile(pos+offset2/u_ratio*adjustedThickness+u_translation);vec4 projected_with_extrude=projectTile(pos+offset2/u_ratio*adjustedThickness+u_translation+dist/u_ratio*adjustedThickness);gl_Position=projected_with_extrude;\\n#ifdef GLOBE\\nv_depth=gl_Position.z/gl_Position.w;\\n#endif\\n#ifdef TERRAIN3D\\nv_gamma_scale=1.0;\\n#else\\nfloat extrude_length_without_perspective=length(dist);float extrude_length_with_perspective=length((projected_with_extrude.xy-projected_no_extrude.xy)/projected_with_extrude.w*u_units_to_pixels);v_gamma_scale=extrude_length_without_perspective/extrude_length_with_perspective;\\n#endif\\nv_width2=vec2(outset,inset);}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default 'uniform lowp float u_device_pixel_ratio;uniform sampler2D u_image;varying vec2 v_width2;varying vec2 v_normal;varying float v_gamma_scale;varying highp vec2 v_uv;\\n#ifdef GLOBE\\nvarying float v_depth;\\n#endif\\n#pragma mapbox: define lowp float blur\\n#pragma mapbox: define lowp float opacity\\nvoid main() {\\n#pragma mapbox: initialize lowp float blur\\n#pragma mapbox: initialize lowp float opacity\\nfloat dist=length(v_normal)*v_width2.s;float blur2=(blur+1.0/u_device_pixel_ratio)*v_gamma_scale;float alpha=clamp(min(dist-(v_width2.t-blur2),v_width2.s-dist)/blur2,0.0,1.0);vec4 color=texture2D(u_image,v_uv);gl_FragColor=color*(alpha*opacity);\\n#ifdef GLOBE\\nif (v_depth > 1.0) {discard;}\\n#endif\\n#ifdef OVERDRAW_INSPECTOR\\ngl_FragColor=vec4(1.0);\\n#endif\\n}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default '\\n#define scale 0.015873016\\nattribute vec2 a_pos_normal;attribute vec4 a_data;attribute float a_uv_x;attribute float a_split_index;uniform vec2 u_translation;uniform mediump float u_ratio;uniform lowp float u_device_pixel_ratio;uniform vec2 u_units_to_pixels;uniform float u_image_height;varying vec2 v_normal;varying vec2 v_width2;varying float v_gamma_scale;varying highp vec2 v_uv;\\n#ifdef GLOBE\\nvarying float v_depth;\\n#endif\\n#pragma mapbox: define lowp float blur\\n#pragma mapbox: define lowp float opacity\\n#pragma mapbox: define mediump float gapwidth\\n#pragma mapbox: define lowp float offset\\n#pragma mapbox: define mediump float width\\nvoid main() {\\n#pragma mapbox: initialize lowp float blur\\n#pragma mapbox: initialize lowp float opacity\\n#pragma mapbox: initialize mediump float gapwidth\\n#pragma mapbox: initialize lowp float offset\\n#pragma mapbox: initialize mediump float width\\nfloat ANTIALIASING=1.0/u_device_pixel_ratio/2.0;vec2 a_extrude=a_data.xy-128.0;float a_direction=mod(a_data.z,4.0)-1.0;highp float texel_height=1.0/u_image_height;highp float half_texel_height=0.5*texel_height;v_uv=vec2(a_uv_x,a_split_index*texel_height-half_texel_height);vec2 pos=floor(a_pos_normal*0.5);mediump vec2 normal=a_pos_normal-2.0*pos;normal.y=normal.y*2.0-1.0;v_normal=normal;gapwidth=gapwidth/2.0;float halfwidth=width/2.0;offset=-1.0*offset;float inset=gapwidth+(gapwidth > 0.0 ? ANTIALIASING : 0.0);float outset=gapwidth+halfwidth*(gapwidth > 0.0 ? 2.0 : 1.0)+(halfwidth==0.0 ? 0.0 : ANTIALIASING);mediump vec2 dist=outset*a_extrude*scale;mediump float u=0.5*a_direction;mediump float t=1.0-abs(u);mediump vec2 offset2=offset*a_extrude*scale*normal.y*mat2(t,-u,u,t);float adjustedThickness=projectLineThickness(pos.y);vec4 projected_no_extrude=projectTile(pos+offset2/u_ratio*adjustedThickness+u_translation);vec4 projected_with_extrude=projectTile(pos+offset2/u_ratio*adjustedThickness+u_translation+dist/u_ratio*adjustedThickness);gl_Position=projected_with_extrude;\\n#ifdef GLOBE\\nv_depth=gl_Position.z/gl_Position.w;\\n#endif\\n#ifdef TERRAIN3D\\nv_gamma_scale=1.0;\\n#else\\nfloat extrude_length_without_perspective=length(dist);float extrude_length_with_perspective=length((projected_with_extrude.xy-projected_no_extrude.xy)/projected_with_extrude.w*u_units_to_pixels);v_gamma_scale=extrude_length_without_perspective/extrude_length_with_perspective;\\n#endif\\nv_width2=vec2(outset,inset);}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default '#ifdef GL_ES\\nprecision highp float;\\n#endif\\nuniform lowp float u_device_pixel_ratio;uniform vec2 u_texsize;uniform float u_fade;uniform mediump vec3 u_scale;uniform sampler2D u_image;varying vec2 v_normal;varying vec2 v_width2;varying float v_linesofar;varying float v_gamma_scale;varying float v_width;\\n#ifdef GLOBE\\nvarying float v_depth;\\n#endif\\n#pragma mapbox: define lowp vec4 pattern_from\\n#pragma mapbox: define lowp vec4 pattern_to\\n#pragma mapbox: define lowp float pixel_ratio_from\\n#pragma mapbox: define lowp float pixel_ratio_to\\n#pragma mapbox: define lowp float blur\\n#pragma mapbox: define lowp float opacity\\nvoid main() {\\n#pragma mapbox: initialize mediump vec4 pattern_from\\n#pragma mapbox: initialize mediump vec4 pattern_to\\n#pragma mapbox: initialize lowp float pixel_ratio_from\\n#pragma mapbox: initialize lowp float pixel_ratio_to\\n#pragma mapbox: initialize lowp float blur\\n#pragma mapbox: initialize lowp float opacity\\nvec2 pattern_tl_a=pattern_from.xy;vec2 pattern_br_a=pattern_from.zw;vec2 pattern_tl_b=pattern_to.xy;vec2 pattern_br_b=pattern_to.zw;float tileZoomRatio=u_scale.x;float fromScale=u_scale.y;float toScale=u_scale.z;vec2 display_size_a=(pattern_br_a-pattern_tl_a)/pixel_ratio_from;vec2 display_size_b=(pattern_br_b-pattern_tl_b)/pixel_ratio_to;vec2 pattern_size_a=vec2(display_size_a.x*fromScale/tileZoomRatio,display_size_a.y);vec2 pattern_size_b=vec2(display_size_b.x*toScale/tileZoomRatio,display_size_b.y);float aspect_a=display_size_a.y/v_width;float aspect_b=display_size_b.y/v_width;float dist=length(v_normal)*v_width2.s;float blur2=(blur+1.0/u_device_pixel_ratio)*v_gamma_scale;float alpha=clamp(min(dist-(v_width2.t-blur2),v_width2.s-dist)/blur2,0.0,1.0);float x_a=mod(v_linesofar/pattern_size_a.x*aspect_a,1.0);float x_b=mod(v_linesofar/pattern_size_b.x*aspect_b,1.0);float y=0.5*v_normal.y+0.5;vec2 texel_size=1.0/u_texsize;vec2 pos_a=mix(pattern_tl_a*texel_size-texel_size,pattern_br_a*texel_size+texel_size,vec2(x_a,y));vec2 pos_b=mix(pattern_tl_b*texel_size-texel_size,pattern_br_b*texel_size+texel_size,vec2(x_b,y));vec4 color=mix(texture2D(u_image,pos_a),texture2D(u_image,pos_b),u_fade);gl_FragColor=color*alpha*opacity;\\n#ifdef GLOBE\\nif (v_depth > 1.0) {discard;}\\n#endif\\n#ifdef OVERDRAW_INSPECTOR\\ngl_FragColor=vec4(1.0);\\n#endif\\n}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default '\\n#define scale 0.015873016\\n#define LINE_DISTANCE_SCALE 2.0\\nattribute vec2 a_pos_normal;attribute vec4 a_data;uniform vec2 u_translation;uniform vec2 u_units_to_pixels;uniform mediump float u_ratio;uniform lowp float u_device_pixel_ratio;varying vec2 v_normal;varying vec2 v_width2;varying float v_linesofar;varying float v_gamma_scale;varying float v_width;\\n#ifdef GLOBE\\nvarying float v_depth;\\n#endif\\n#pragma mapbox: define lowp float blur\\n#pragma mapbox: define lowp float opacity\\n#pragma mapbox: define lowp float offset\\n#pragma mapbox: define mediump float gapwidth\\n#pragma mapbox: define mediump float width\\n#pragma mapbox: define lowp float floorwidth\\n#pragma mapbox: define lowp vec4 pattern_from\\n#pragma mapbox: define lowp vec4 pattern_to\\n#pragma mapbox: define lowp float pixel_ratio_from\\n#pragma mapbox: define lowp float pixel_ratio_to\\nvoid main() {\\n#pragma mapbox: initialize lowp float blur\\n#pragma mapbox: initialize lowp float opacity\\n#pragma mapbox: initialize lowp float offset\\n#pragma mapbox: initialize mediump float gapwidth\\n#pragma mapbox: initialize mediump float width\\n#pragma mapbox: initialize lowp float floorwidth\\n#pragma mapbox: initialize mediump vec4 pattern_from\\n#pragma mapbox: initialize mediump vec4 pattern_to\\n#pragma mapbox: initialize lowp float pixel_ratio_from\\n#pragma mapbox: initialize lowp float pixel_ratio_to\\nfloat ANTIALIASING=1.0/u_device_pixel_ratio/2.0;vec2 a_extrude=a_data.xy-128.0;float a_direction=mod(a_data.z,4.0)-1.0;float a_linesofar=(floor(a_data.z/4.0)+a_data.w*64.0)*LINE_DISTANCE_SCALE;vec2 pos=floor(a_pos_normal*0.5);mediump vec2 normal=a_pos_normal-2.0*pos;normal.y=normal.y*2.0-1.0;v_normal=normal;gapwidth=gapwidth/2.0;float halfwidth=width/2.0;offset=-1.0*offset;float inset=gapwidth+(gapwidth > 0.0 ? ANTIALIASING : 0.0);float outset=gapwidth+halfwidth*(gapwidth > 0.0 ? 2.0 : 1.0)+(halfwidth==0.0 ? 0.0 : ANTIALIASING);mediump vec2 dist=outset*a_extrude*scale;mediump float u=0.5*a_direction;mediump float t=1.0-abs(u);mediump vec2 offset2=offset*a_extrude*scale*normal.y*mat2(t,-u,u,t);float adjustedThickness=projectLineThickness(pos.y);vec4 projected_no_extrude=projectTile(pos+offset2/u_ratio*adjustedThickness+u_translation);vec4 projected_with_extrude=projectTile(pos+offset2/u_ratio*adjustedThickness+u_translation+dist/u_ratio*adjustedThickness);gl_Position=projected_with_extrude;\\n#ifdef GLOBE\\nv_depth=gl_Position.z/gl_Position.w;\\n#endif\\n#ifdef TERRAIN3D\\nv_gamma_scale=1.0;\\n#else\\nfloat extrude_length_without_perspective=length(dist);float extrude_length_with_perspective=length((projected_with_extrude.xy-projected_no_extrude.xy)/projected_with_extrude.w*u_units_to_pixels);v_gamma_scale=extrude_length_without_perspective/extrude_length_with_perspective;\\n#endif\\nv_linesofar=a_linesofar;v_width2=vec2(outset,inset);v_width=floorwidth;}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default 'uniform lowp float u_device_pixel_ratio;uniform sampler2D u_image;uniform float u_sdfgamma;uniform float u_mix;varying vec2 v_normal;varying vec2 v_width2;varying vec2 v_tex_a;varying vec2 v_tex_b;varying float v_gamma_scale;\\n#ifdef GLOBE\\nvarying float v_depth;\\n#endif\\n#pragma mapbox: define highp vec4 color\\n#pragma mapbox: define lowp float blur\\n#pragma mapbox: define lowp float opacity\\n#pragma mapbox: define mediump float width\\n#pragma mapbox: define lowp float floorwidth\\nvoid main() {\\n#pragma mapbox: initialize highp vec4 color\\n#pragma mapbox: initialize lowp float blur\\n#pragma mapbox: initialize lowp float opacity\\n#pragma mapbox: initialize mediump float width\\n#pragma mapbox: initialize lowp float floorwidth\\nfloat dist=length(v_normal)*v_width2.s;float blur2=(blur+1.0/u_device_pixel_ratio)*v_gamma_scale;float alpha=clamp(min(dist-(v_width2.t-blur2),v_width2.s-dist)/blur2,0.0,1.0);float sdfdist_a=texture2D(u_image,v_tex_a).a;float sdfdist_b=texture2D(u_image,v_tex_b).a;float sdfdist=mix(sdfdist_a,sdfdist_b,u_mix);alpha*=smoothstep(0.5-u_sdfgamma/floorwidth,0.5+u_sdfgamma/floorwidth,sdfdist);gl_FragColor=color*(alpha*opacity);\\n#ifdef GLOBE\\nif (v_depth > 1.0) {discard;}\\n#endif\\n#ifdef OVERDRAW_INSPECTOR\\ngl_FragColor=vec4(1.0);\\n#endif\\n}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default '\\n#define scale 0.015873016\\n#define LINE_DISTANCE_SCALE 2.0\\nattribute vec2 a_pos_normal;attribute vec4 a_data;uniform vec2 u_translation;uniform mediump float u_ratio;uniform lowp float u_device_pixel_ratio;uniform vec2 u_patternscale_a;uniform float u_tex_y_a;uniform vec2 u_patternscale_b;uniform float u_tex_y_b;uniform vec2 u_units_to_pixels;varying vec2 v_normal;varying vec2 v_width2;varying vec2 v_tex_a;varying vec2 v_tex_b;varying float v_gamma_scale;\\n#ifdef GLOBE\\nvarying float v_depth;\\n#endif\\n#pragma mapbox: define highp vec4 color\\n#pragma mapbox: define lowp float blur\\n#pragma mapbox: define lowp float opacity\\n#pragma mapbox: define mediump float gapwidth\\n#pragma mapbox: define lowp float offset\\n#pragma mapbox: define mediump float width\\n#pragma mapbox: define lowp float floorwidth\\nvoid main() {\\n#pragma mapbox: initialize highp vec4 color\\n#pragma mapbox: initialize lowp float blur\\n#pragma mapbox: initialize lowp float opacity\\n#pragma mapbox: initialize mediump float gapwidth\\n#pragma mapbox: initialize lowp float offset\\n#pragma mapbox: initialize mediump float width\\n#pragma mapbox: initialize lowp float floorwidth\\nfloat ANTIALIASING=1.0/u_device_pixel_ratio/2.0;vec2 a_extrude=a_data.xy-128.0;float a_direction=mod(a_data.z,4.0)-1.0;float a_linesofar=(floor(a_data.z/4.0)+a_data.w*64.0)*LINE_DISTANCE_SCALE;vec2 pos=floor(a_pos_normal*0.5);mediump vec2 normal=a_pos_normal-2.0*pos;normal.y=normal.y*2.0-1.0;v_normal=normal;gapwidth=gapwidth/2.0;float halfwidth=width/2.0;offset=-1.0*offset;float inset=gapwidth+(gapwidth > 0.0 ? ANTIALIASING : 0.0);float outset=gapwidth+halfwidth*(gapwidth > 0.0 ? 2.0 : 1.0)+(halfwidth==0.0 ? 0.0 : ANTIALIASING);mediump vec2 dist=outset*a_extrude*scale;mediump float u=0.5*a_direction;mediump float t=1.0-abs(u);mediump vec2 offset2=offset*a_extrude*scale*normal.y*mat2(t,-u,u,t);float adjustedThickness=projectLineThickness(pos.y);vec4 projected_no_extrude=projectTile(pos+offset2/u_ratio*adjustedThickness+u_translation);vec4 projected_with_extrude=projectTile(pos+offset2/u_ratio*adjustedThickness+u_translation+dist/u_ratio*adjustedThickness);gl_Position=projected_with_extrude;\\n#ifdef GLOBE\\nv_depth=gl_Position.z/gl_Position.w;\\n#endif\\n#ifdef TERRAIN3D\\nv_gamma_scale=1.0;\\n#else\\nfloat extrude_length_without_perspective=length(dist);float extrude_length_with_perspective=length((projected_with_extrude.xy-projected_no_extrude.xy)/projected_with_extrude.w*u_units_to_pixels);v_gamma_scale=extrude_length_without_perspective/extrude_length_with_perspective;\\n#endif\\nv_tex_a=vec2(a_linesofar*u_patternscale_a.x/floorwidth,normal.y*u_patternscale_a.y+u_tex_y_a);v_tex_b=vec2(a_linesofar*u_patternscale_b.x/floorwidth,normal.y*u_patternscale_b.y+u_tex_y_b);v_width2=vec2(outset,inset);}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default 'uniform float u_fade_t;uniform float u_opacity;uniform sampler2D u_image0;uniform sampler2D u_image1;varying vec2 v_pos0;varying vec2 v_pos1;uniform float u_brightness_low;uniform float u_brightness_high;uniform float u_saturation_factor;uniform float u_contrast_factor;uniform vec3 u_spin_weights;void main() {vec4 color0=texture2D(u_image0,v_pos0);vec4 color1=texture2D(u_image1,v_pos1);if (color0.a > 0.0) {color0.rgb=color0.rgb/color0.a;}if (color1.a > 0.0) {color1.rgb=color1.rgb/color1.a;}vec4 color=mix(color0,color1,u_fade_t);color.a*=u_opacity;vec3 rgb=color.rgb;rgb=vec3(dot(rgb,u_spin_weights.xyz),dot(rgb,u_spin_weights.zxy),dot(rgb,u_spin_weights.yzx));float average=(color.r+color.g+color.b)/3.0;rgb+=(average-rgb)*u_saturation_factor;rgb=(rgb-0.5)*u_contrast_factor+0.5;vec3 u_high_vec=vec3(u_brightness_low,u_brightness_low,u_brightness_low);vec3 u_low_vec=vec3(u_brightness_high,u_brightness_high,u_brightness_high);gl_FragColor=vec4(mix(u_high_vec,u_low_vec,rgb)*color.a,color.a);\\n#ifdef OVERDRAW_INSPECTOR\\ngl_FragColor=vec4(1.0);\\n#endif\\n}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default 'uniform vec2 u_tl_parent;uniform float u_scale_parent;uniform float u_buffer_scale;uniform vec4 u_coords_top;uniform vec4 u_coords_bottom;attribute vec2 a_pos;varying vec2 v_pos0;varying vec2 v_pos1;void main() {vec2 fractionalPos=a_pos/8192.0;vec2 position=mix(mix(u_coords_top.xy,u_coords_top.zw,fractionalPos.x),mix(u_coords_bottom.xy,u_coords_bottom.zw,fractionalPos.x),fractionalPos.y);gl_Position=projectTile(position,position);v_pos0=((fractionalPos-0.5)/u_buffer_scale)+0.5;\\n#ifdef GLOBE\\nif (a_pos.y <-32767.5) {v_pos0.y=0.0;}if (a_pos.y > 32766.5) {v_pos0.y=1.0;}\\n#endif\\nv_pos1=(v_pos0*u_scale_parent)+u_tl_parent;}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default 'uniform sampler2D u_texture;varying vec2 v_tex;varying float v_fade_opacity;\\n#pragma mapbox: define lowp float opacity\\nvoid main() {\\n#pragma mapbox: initialize lowp float opacity\\nlowp float alpha=opacity*v_fade_opacity;gl_FragColor=texture2D(u_texture,v_tex)*alpha;\\n#ifdef OVERDRAW_INSPECTOR\\ngl_FragColor=vec4(1.0);\\n#endif\\n}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default 'attribute vec4 a_pos_offset;attribute vec4 a_data;attribute vec4 a_pixeloffset;attribute vec3 a_projected_pos;attribute float a_fade_opacity;uniform bool u_is_size_zoom_constant;uniform bool u_is_size_feature_constant;uniform highp float u_size_t;uniform highp float u_size;uniform highp float u_camera_to_center_distance;uniform highp float u_pitch;uniform bool u_rotate_symbol;uniform highp float u_aspect_ratio;uniform float u_fade_change;uniform mat4 u_label_plane_matrix;uniform mat4 u_coord_matrix;uniform bool u_is_text;uniform bool u_pitch_with_map;uniform vec2 u_texsize;uniform bool u_is_along_line;uniform bool u_is_variable_anchor;uniform vec2 u_translation;uniform float u_pitched_scale;varying vec2 v_tex;varying float v_fade_opacity;\\n#pragma mapbox: define lowp float opacity\\nvoid main() {\\n#pragma mapbox: initialize lowp float opacity\\nvec2 a_pos=a_pos_offset.xy;vec2 a_offset=a_pos_offset.zw;vec2 a_tex=a_data.xy;vec2 a_size=a_data.zw;float a_size_min=floor(a_size[0]*0.5);vec2 a_pxoffset=a_pixeloffset.xy;vec2 a_minFontScale=a_pixeloffset.zw/256.0;float ele=get_elevation(a_pos);highp float segment_angle=-a_projected_pos[2];float size;if (!u_is_size_zoom_constant && !u_is_size_feature_constant) {size=mix(a_size_min,a_size[1],u_size_t)/128.0;} else if (u_is_size_zoom_constant && !u_is_size_feature_constant) {size=a_size_min/128.0;} else {size=u_size;}vec2 translated_a_pos=a_pos+u_translation;vec4 projectedPoint=projectTileWithElevation(translated_a_pos,ele);highp float camera_to_anchor_distance=projectedPoint.w;highp float distance_ratio=u_pitch_with_map ?\\ncamera_to_anchor_distance/u_camera_to_center_distance :\\nu_camera_to_center_distance/camera_to_anchor_distance;highp float perspective_ratio=clamp(0.5+0.5*distance_ratio,0.0,4.0);size*=perspective_ratio;float fontScale=u_is_text ? size/24.0 : size;highp float symbol_rotation=0.0;if (u_rotate_symbol) {vec4 offsetProjectedPoint=projectTileWithElevation(translated_a_pos+vec2(1,0),ele);vec2 a=projectedPoint.xy/projectedPoint.w;vec2 b=offsetProjectedPoint.xy/offsetProjectedPoint.w;symbol_rotation=atan((b.y-a.y)/u_aspect_ratio,b.x-a.x);}highp float angle_sin=sin(segment_angle+symbol_rotation);highp float angle_cos=cos(segment_angle+symbol_rotation);mat2 rotation_matrix=mat2(angle_cos,-1.0*angle_sin,angle_sin,angle_cos);vec4 projected_pos;if (u_is_along_line || u_is_variable_anchor) {projected_pos=vec4(a_projected_pos.xy,ele,1.0);} else if (u_pitch_with_map) {projected_pos=u_label_plane_matrix*vec4(a_projected_pos.xy+u_translation,ele,1.0);} else {projected_pos=u_label_plane_matrix*projectTileWithElevation(a_projected_pos.xy+u_translation,ele);}float z=float(u_pitch_with_map)*projected_pos.z/projected_pos.w;float projectionScaling=1.0;\\n#ifdef GLOBE\\nif(u_pitch_with_map && !u_is_along_line) {float anchor_pos_tile_y=(u_coord_matrix*vec4(projected_pos.xy/projected_pos.w,z,1.0)).y;projectionScaling=mix(projectionScaling,1.0/circumferenceRatioAtTileY(anchor_pos_tile_y)*u_pitched_scale,u_projection_transition);}\\n#endif\\nvec4 finalPos=u_coord_matrix*vec4(projected_pos.xy/projected_pos.w+rotation_matrix*(a_offset/32.0*max(a_minFontScale,fontScale)+a_pxoffset/16.0)*projectionScaling,z,1.0);if(u_pitch_with_map) {finalPos=projectTileWithElevation(finalPos.xy,finalPos.z);}gl_Position=finalPos;v_tex=a_tex/u_texsize;vec2 fade_opacity=unpack_opacity(a_fade_opacity);float fade_change=fade_opacity[1] > 0.5 ? u_fade_change :-u_fade_change;float visibility=calculate_visibility(projectedPoint);v_fade_opacity=max(0.0,min(visibility,fade_opacity[0]+fade_change));}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default '#define SDF_PX 8.0\\nuniform bool u_is_halo;uniform sampler2D u_texture;uniform highp float u_gamma_scale;uniform lowp float u_device_pixel_ratio;uniform bool u_is_text;varying vec2 v_data0;varying vec3 v_data1;\\n#pragma mapbox: define highp vec4 fill_color\\n#pragma mapbox: define highp vec4 halo_color\\n#pragma mapbox: define lowp float opacity\\n#pragma mapbox: define lowp float halo_width\\n#pragma mapbox: define lowp float halo_blur\\nvoid main() {\\n#pragma mapbox: initialize highp vec4 fill_color\\n#pragma mapbox: initialize highp vec4 halo_color\\n#pragma mapbox: initialize lowp float opacity\\n#pragma mapbox: initialize lowp float halo_width\\n#pragma mapbox: initialize lowp float halo_blur\\nfloat EDGE_GAMMA=0.105/u_device_pixel_ratio;vec2 tex=v_data0.xy;float gamma_scale=v_data1.x;float size=v_data1.y;float fade_opacity=v_data1[2];float fontScale=u_is_text ? size/24.0 : size;lowp vec4 color=fill_color;highp float gamma=EDGE_GAMMA/(fontScale*u_gamma_scale);lowp float inner_edge=(256.0-64.0)/256.0;if (u_is_halo) {color=halo_color;gamma=(halo_blur*1.19/SDF_PX+EDGE_GAMMA)/(fontScale*u_gamma_scale);inner_edge=inner_edge+gamma*gamma_scale;}lowp float dist=texture2D(u_texture,tex).a;highp float gamma_scaled=gamma*gamma_scale;highp float alpha=smoothstep(inner_edge-gamma_scaled,inner_edge+gamma_scaled,dist);if (u_is_halo) {lowp float halo_edge=(6.0-halo_width/fontScale)/SDF_PX;alpha=min(smoothstep(halo_edge-gamma_scaled,halo_edge+gamma_scaled,dist),1.0-alpha);}gl_FragColor=color*(alpha*opacity*fade_opacity);\\n#ifdef OVERDRAW_INSPECTOR\\ngl_FragColor=vec4(1.0);\\n#endif\\n}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default 'attribute vec4 a_pos_offset;attribute vec4 a_data;attribute vec4 a_pixeloffset;attribute vec3 a_projected_pos;attribute float a_fade_opacity;uniform bool u_is_size_zoom_constant;uniform bool u_is_size_feature_constant;uniform highp float u_size_t;uniform highp float u_size;uniform mat4 u_label_plane_matrix;uniform mat4 u_coord_matrix;uniform bool u_is_text;uniform bool u_pitch_with_map;uniform bool u_is_along_line;uniform bool u_is_variable_anchor;uniform highp float u_pitch;uniform bool u_rotate_symbol;uniform highp float u_aspect_ratio;uniform highp float u_camera_to_center_distance;uniform float u_fade_change;uniform vec2 u_texsize;uniform vec2 u_translation;uniform float u_pitched_scale;varying vec2 v_data0;varying vec3 v_data1;\\n#pragma mapbox: define highp vec4 fill_color\\n#pragma mapbox: define highp vec4 halo_color\\n#pragma mapbox: define lowp float opacity\\n#pragma mapbox: define lowp float halo_width\\n#pragma mapbox: define lowp float halo_blur\\nvoid main() {\\n#pragma mapbox: initialize highp vec4 fill_color\\n#pragma mapbox: initialize highp vec4 halo_color\\n#pragma mapbox: initialize lowp float opacity\\n#pragma mapbox: initialize lowp float halo_width\\n#pragma mapbox: initialize lowp float halo_blur\\nvec2 a_pos=a_pos_offset.xy;vec2 a_offset=a_pos_offset.zw;vec2 a_tex=a_data.xy;vec2 a_size=a_data.zw;float a_size_min=floor(a_size[0]*0.5);vec2 a_pxoffset=a_pixeloffset.xy;float ele=get_elevation(a_pos);highp float segment_angle=-a_projected_pos[2];float size;if (!u_is_size_zoom_constant && !u_is_size_feature_constant) {size=mix(a_size_min,a_size[1],u_size_t)/128.0;} else if (u_is_size_zoom_constant && !u_is_size_feature_constant) {size=a_size_min/128.0;} else {size=u_size;}vec2 translated_a_pos=a_pos+u_translation;vec4 projectedPoint=projectTileWithElevation(translated_a_pos,ele);highp float camera_to_anchor_distance=projectedPoint.w;highp float distance_ratio=u_pitch_with_map ?\\ncamera_to_anchor_distance/u_camera_to_center_distance :\\nu_camera_to_center_distance/camera_to_anchor_distance;highp float perspective_ratio=clamp(0.5+0.5*distance_ratio,0.0,4.0);size*=perspective_ratio;float fontScale=u_is_text ? size/24.0 : size;highp float symbol_rotation=0.0;if (u_rotate_symbol) {vec4 offsetProjectedPoint=projectTileWithElevation(translated_a_pos+vec2(1,0),ele);vec2 a=projectedPoint.xy/projectedPoint.w;vec2 b=offsetProjectedPoint.xy/offsetProjectedPoint.w;symbol_rotation=atan((b.y-a.y)/u_aspect_ratio,b.x-a.x);}highp float angle_sin=sin(segment_angle+symbol_rotation);highp float angle_cos=cos(segment_angle+symbol_rotation);mat2 rotation_matrix=mat2(angle_cos,-1.0*angle_sin,angle_sin,angle_cos);vec4 projected_pos;if (u_is_along_line || u_is_variable_anchor) {projected_pos=vec4(a_projected_pos.xy,ele,1.0);} else if (u_pitch_with_map) {projected_pos=u_label_plane_matrix*vec4(a_projected_pos.xy+u_translation,ele,1.0);} else {projected_pos=u_label_plane_matrix*projectTileWithElevation(a_projected_pos.xy+u_translation,ele);}float z=float(u_pitch_with_map)*projected_pos.z/projected_pos.w;float projectionScaling=1.0;\\n#ifdef GLOBE\\nif(u_pitch_with_map) {float anchor_pos_tile_y=(u_coord_matrix*vec4(projected_pos.xy/projected_pos.w,z,1.0)).y;projectionScaling=mix(projectionScaling,1.0/circumferenceRatioAtTileY(anchor_pos_tile_y)*u_pitched_scale,u_projection_transition);}\\n#endif\\nvec4 finalPos=u_coord_matrix*vec4(projected_pos.xy/projected_pos.w+rotation_matrix*(a_offset/32.0*fontScale+a_pxoffset)*projectionScaling,z,1.0);if(u_pitch_with_map) {finalPos=projectTileWithElevation(finalPos.xy,finalPos.z);}float gamma_scale=finalPos.w;gl_Position=finalPos;vec2 fade_opacity=unpack_opacity(a_fade_opacity);float visibility=calculate_visibility(projectedPoint);float fade_change=fade_opacity[1] > 0.5 ? u_fade_change :-u_fade_change;float interpolated_fade_opacity=max(0.0,min(visibility,fade_opacity[0]+fade_change));v_data0=a_tex/u_texsize;v_data1=vec3(gamma_scale,size,interpolated_fade_opacity);}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default '#define SDF_PX 8.0\\n#define SDF 1.0\\n#define ICON 0.0\\nuniform bool u_is_halo;uniform sampler2D u_texture;uniform sampler2D u_texture_icon;uniform highp float u_gamma_scale;uniform lowp float u_device_pixel_ratio;varying vec4 v_data0;varying vec4 v_data1;\\n#pragma mapbox: define highp vec4 fill_color\\n#pragma mapbox: define highp vec4 halo_color\\n#pragma mapbox: define lowp float opacity\\n#pragma mapbox: define lowp float halo_width\\n#pragma mapbox: define lowp float halo_blur\\nvoid main() {\\n#pragma mapbox: initialize highp vec4 fill_color\\n#pragma mapbox: initialize highp vec4 halo_color\\n#pragma mapbox: initialize lowp float opacity\\n#pragma mapbox: initialize lowp float halo_width\\n#pragma mapbox: initialize lowp float halo_blur\\nfloat fade_opacity=v_data1[2];if (v_data1.w==ICON) {vec2 tex_icon=v_data0.zw;lowp float alpha=opacity*fade_opacity;gl_FragColor=texture2D(u_texture_icon,tex_icon)*alpha;\\n#ifdef OVERDRAW_INSPECTOR\\ngl_FragColor=vec4(1.0);\\n#endif\\nreturn;}vec2 tex=v_data0.xy;float EDGE_GAMMA=0.105/u_device_pixel_ratio;float gamma_scale=v_data1.x;float size=v_data1.y;float fontScale=size/24.0;lowp vec4 color=fill_color;highp float gamma=EDGE_GAMMA/(fontScale*u_gamma_scale);lowp float buff=(256.0-64.0)/256.0;if (u_is_halo) {color=halo_color;gamma=(halo_blur*1.19/SDF_PX+EDGE_GAMMA)/(fontScale*u_gamma_scale);buff=(6.0-halo_width/fontScale)/SDF_PX;}lowp float dist=texture2D(u_texture,tex).a;highp float gamma_scaled=gamma*gamma_scale;highp float alpha=smoothstep(buff-gamma_scaled,buff+gamma_scaled,dist);gl_FragColor=color*(alpha*opacity*fade_opacity);\\n#ifdef OVERDRAW_INSPECTOR\\ngl_FragColor=vec4(1.0);\\n#endif\\n}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default 'attribute vec4 a_pos_offset;attribute vec4 a_data;attribute vec3 a_projected_pos;attribute float a_fade_opacity;uniform bool u_is_size_zoom_constant;uniform bool u_is_size_feature_constant;uniform highp float u_size_t;uniform highp float u_size;uniform mat4 u_label_plane_matrix;uniform mat4 u_coord_matrix;uniform bool u_is_text;uniform bool u_pitch_with_map;uniform highp float u_pitch;uniform bool u_rotate_symbol;uniform highp float u_aspect_ratio;uniform highp float u_camera_to_center_distance;uniform float u_fade_change;uniform vec2 u_texsize;uniform vec2 u_texsize_icon;uniform bool u_is_along_line;uniform bool u_is_variable_anchor;uniform vec2 u_translation;uniform float u_pitched_scale;varying vec4 v_data0;varying vec4 v_data1;\\n#pragma mapbox: define highp vec4 fill_color\\n#pragma mapbox: define highp vec4 halo_color\\n#pragma mapbox: define lowp float opacity\\n#pragma mapbox: define lowp float halo_width\\n#pragma mapbox: define lowp float halo_blur\\nvoid main() {\\n#pragma mapbox: initialize highp vec4 fill_color\\n#pragma mapbox: initialize highp vec4 halo_color\\n#pragma mapbox: initialize lowp float opacity\\n#pragma mapbox: initialize lowp float halo_width\\n#pragma mapbox: initialize lowp float halo_blur\\nvec2 a_pos=a_pos_offset.xy;vec2 a_offset=a_pos_offset.zw;vec2 a_tex=a_data.xy;vec2 a_size=a_data.zw;float a_size_min=floor(a_size[0]*0.5);float is_sdf=a_size[0]-2.0*a_size_min;float ele=get_elevation(a_pos);highp float segment_angle=-a_projected_pos[2];float size;if (!u_is_size_zoom_constant && !u_is_size_feature_constant) {size=mix(a_size_min,a_size[1],u_size_t)/128.0;} else if (u_is_size_zoom_constant && !u_is_size_feature_constant) {size=a_size_min/128.0;} else {size=u_size;}vec2 translated_a_pos=a_pos+u_translation;vec4 projectedPoint=projectTileWithElevation(translated_a_pos,ele);highp float camera_to_anchor_distance=projectedPoint.w;highp float distance_ratio=u_pitch_with_map ?\\ncamera_to_anchor_distance/u_camera_to_center_distance :\\nu_camera_to_center_distance/camera_to_anchor_distance;highp float perspective_ratio=clamp(0.5+0.5*distance_ratio,0.0,4.0);size*=perspective_ratio;float fontScale=size/24.0;highp float symbol_rotation=0.0;if (u_rotate_symbol) {vec4 offsetProjectedPoint=projectTileWithElevation(translated_a_pos+vec2(1,0),ele);vec2 a=projectedPoint.xy/projectedPoint.w;vec2 b=offsetProjectedPoint.xy/offsetProjectedPoint.w;symbol_rotation=atan((b.y-a.y)/u_aspect_ratio,b.x-a.x);}highp float angle_sin=sin(segment_angle+symbol_rotation);highp float angle_cos=cos(segment_angle+symbol_rotation);mat2 rotation_matrix=mat2(angle_cos,-1.0*angle_sin,angle_sin,angle_cos);vec4 projected_pos;if (u_is_along_line || u_is_variable_anchor) {projected_pos=vec4(a_projected_pos.xy,ele,1.0);} else if (u_pitch_with_map) {projected_pos=u_label_plane_matrix*vec4(a_projected_pos.xy+u_translation,ele,1.0);} else {projected_pos=u_label_plane_matrix*projectTileWithElevation(a_projected_pos.xy+u_translation,ele);}float z=float(u_pitch_with_map)*projected_pos.z/projected_pos.w;float projectionScaling=1.0;\\n#ifdef GLOBE\\nif(u_pitch_with_map && !u_is_along_line) {float anchor_pos_tile_y=(u_coord_matrix*vec4(projected_pos.xy/projected_pos.w,z,1.0)).y;projectionScaling=mix(projectionScaling,1.0/circumferenceRatioAtTileY(anchor_pos_tile_y)*u_pitched_scale,u_projection_transition);}\\n#endif\\nvec4 finalPos=u_coord_matrix*vec4(projected_pos.xy/projected_pos.w+rotation_matrix*(a_offset/32.0*fontScale)*projectionScaling,z,1.0);if(u_pitch_with_map) {finalPos=projectTileWithElevation(finalPos.xy,finalPos.z);}float gamma_scale=finalPos.w;gl_Position=finalPos;vec2 fade_opacity=unpack_opacity(a_fade_opacity);float visibility=calculate_visibility(projectedPoint);float fade_change=fade_opacity[1] > 0.5 ? u_fade_change :-u_fade_change;float interpolated_fade_opacity=max(0.0,min(visibility,fade_opacity[0]+fade_change));v_data0.xy=a_tex/u_texsize;v_data0.zw=a_tex/u_texsize_icon;v_data1=vec4(gamma_scale,size,interpolated_fade_opacity,is_sdf);}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default 'uniform sampler2D u_texture;uniform vec4 u_fog_color;uniform vec4 u_horizon_color;uniform float u_fog_ground_blend;uniform float u_fog_ground_blend_opacity;uniform float u_horizon_fog_blend;uniform bool u_is_globe_mode;varying vec2 v_texture_pos;varying float v_fog_depth;const float gamma=2.2;vec4 gammaToLinear(vec4 color) {return pow(color,vec4(gamma));}vec4 linearToGamma(vec4 color) {return pow(color,vec4(1.0/gamma));}void main() {vec4 surface_color=texture2D(u_texture,vec2(v_texture_pos.x,1.0-v_texture_pos.y));if (!u_is_globe_mode && v_fog_depth > u_fog_ground_blend) {vec4 surface_color_linear=gammaToLinear(surface_color);float blend_color=smoothstep(0.0,1.0,max((v_fog_depth-u_horizon_fog_blend)/(1.0-u_horizon_fog_blend),0.0));vec4 fog_horizon_color_linear=mix(gammaToLinear(u_fog_color),gammaToLinear(u_horizon_color),blend_color);float factor_fog=max(v_fog_depth-u_fog_ground_blend,0.0)/(1.0-u_fog_ground_blend);gl_FragColor=linearToGamma(mix(surface_color_linear,fog_horizon_color_linear,pow(factor_fog,2.0)*u_fog_ground_blend_opacity));} else {gl_FragColor=surface_color;}}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default 'attribute vec3 a_pos3d;uniform mat4 u_fog_matrix;uniform float u_ele_delta;varying vec2 v_texture_pos;varying float v_fog_depth;void main() {float ele=get_elevation(a_pos3d.xy);float ele_delta=a_pos3d.z==1.0 ? u_ele_delta : 0.0;v_texture_pos=a_pos3d.xy/8192.0;gl_Position=projectTileFor3D(a_pos3d.xy,get_elevation(a_pos3d.xy)-ele_delta);vec4 pos=u_fog_matrix*vec4(a_pos3d.xy,ele,1.0);v_fog_depth=pos.z/pos.w*0.5+0.5;}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default 'varying float v_depth;const highp vec4 bitSh=vec4(256.*256.*256.,256.*256.,256.,1.);const highp vec4 bitMsk=vec4(0.,vec3(1./256.0));highp vec4 pack(highp float value) {highp vec4 comp=fract(value*bitSh);comp-=comp.xxyz*bitMsk;return comp;}void main() {gl_FragColor=pack(v_depth);}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default 'attribute vec3 a_pos3d;uniform float u_ele_delta;varying float v_depth;void main() {float ele=get_elevation(a_pos3d.xy);float ele_delta=a_pos3d.z==1.0 ? u_ele_delta : 0.0;gl_Position=projectTileFor3D(a_pos3d.xy,ele-ele_delta);v_depth=gl_Position.z/gl_Position.w;}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default 'precision mediump float;uniform sampler2D u_texture;uniform float u_terrain_coords_id;varying vec2 v_texture_pos;void main() {vec4 rgba=texture2D(u_texture,v_texture_pos);gl_FragColor=vec4(rgba.r,rgba.g,rgba.b,u_terrain_coords_id);}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default 'attribute vec3 a_pos3d;uniform float u_ele_delta;varying vec2 v_texture_pos;void main() {float ele=get_elevation(a_pos3d.xy);float ele_delta=a_pos3d.z==1.0 ? u_ele_delta : 0.0;v_texture_pos=a_pos3d.xy/8192.0;gl_Position=projectTileFor3D(a_pos3d.xy,ele-ele_delta);}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default 'varying vec4 v_output_error_encoded;void main() {gl_FragColor=v_output_error_encoded;}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default 'attribute vec2 a_pos;uniform highp float u_input;uniform highp float u_output_expected;varying vec4 v_output_error_encoded;void main() {float real_output=2.0*atan(exp(PI-(u_input*PI*2.0)))-PI*0.5;float error=real_output-u_output_expected;float abs_error=abs(error)*128.0;v_output_error_encoded.x=min(floor(abs_error*256.0),255.0)/255.0;abs_error-=v_output_error_encoded.x;v_output_error_encoded.y=min(floor(abs_error*65536.0),255.0)/255.0;abs_error-=v_output_error_encoded.x/255.0;v_output_error_encoded.z=min(floor(abs_error*16777216.0),255.0)/255.0;v_output_error_encoded.w=error >=0.0 ? 1.0 : 0.0;gl_Position=vec4(a_pos,0.0,1.0);}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default 'varying vec3 view_direction;uniform vec3 u_sun_pos;uniform vec3 u_globe_position;uniform float u_globe_radius;uniform float u_atmosphere_blend;/**Shader use from https:*Made some change to adapt to MapLibre Globe geometry*/const float PI=3.141592653589793;const int iSteps=5;const int jSteps=3;/*radius of the planet*/const float EARTH_RADIUS=6371e3;/*radius of the atmosphere*/const float ATMOS_RADIUS=6471e3;vec2 rsi(vec3 r0,vec3 rd,float sr) {float a=dot(rd,rd);float b=2.0*dot(rd,r0);float c=dot(r0,r0)-(sr*sr);float d=(b*b)-4.0*a*c;if (d < 0.0) return vec2(1e5,-1e5);return vec2((-b-sqrt(d))/(2.0*a),(-b+sqrt(d))/(2.0*a));}vec4 atmosphere(vec3 r,vec3 r0,vec3 pSun,float iSun,float rPlanet,float rAtmos,vec3 kRlh,float kMie,float shRlh,float shMie,float g) {pSun=normalize(pSun);r=normalize(r);vec2 p=rsi(r0,r,rAtmos);if (p.x > p.y) return vec4(0,0,0,0);if (p.x < 0.0) {p.x=0.0;}vec3 pos=r0+r*p.x;vec2 p2=rsi(r0,r,rPlanet);if (p2.x <=p2.y && p2.x > 0.0) {p.y=min(p.y,p2.x);}float iStepSize=(p.y-p.x)/float(iSteps);float iTime=p.x+iStepSize*0.5;vec3 totalRlh=vec3(0,0,0);vec3 totalMie=vec3(0,0,0);float iOdRlh=0.0;float iOdMie=0.0;float mu=dot(r,pSun);float mumu=mu*mu;float gg=g*g;float pRlh=3.0/(16.0*PI)*(1.0+mumu);float pMie=3.0/(8.0*PI)*((1.0-gg)*(mumu+1.0))/(pow(1.0+gg-2.0*mu*g,1.5)*(2.0+gg));for (int i=0; i < iSteps; i++) {vec3 iPos=r0+r*iTime;float iHeight=length(iPos)-rPlanet;float odStepRlh=exp(-iHeight/shRlh)*iStepSize;float odStepMie=exp(-iHeight/shMie)*iStepSize;iOdRlh+=odStepRlh;iOdMie+=odStepMie;float jStepSize=rsi(iPos,pSun,rAtmos).y/float(jSteps);float jTime=jStepSize*0.5;float jOdRlh=0.0;float jOdMie=0.0;for (int j=0; j < jSteps; j++) {vec3 jPos=iPos+pSun*jTime;float jHeight=length(jPos)-rPlanet;jOdRlh+=exp(-jHeight/shRlh)*jStepSize;jOdMie+=exp(-jHeight/shMie)*jStepSize;jTime+=jStepSize;}vec3 attn=exp(-(kMie*(iOdMie+jOdMie)+kRlh*(iOdRlh+jOdRlh)));totalRlh+=odStepRlh*attn;totalMie+=odStepMie*attn;iTime+=iStepSize;}float opacity=min(0.75,exp(-(length(kRlh)*length(totalRlh)+kMie*length(totalMie))));vec3 color=iSun*(pRlh*kRlh*totalRlh+pMie*kMie*totalMie);return vec4(color,opacity);}void main() {vec3 scale_camera_pos=-u_globe_position*EARTH_RADIUS/u_globe_radius;vec4 color=atmosphere(normalize(view_direction),scale_camera_pos,u_sun_pos,22.0,EARTH_RADIUS,ATMOS_RADIUS,vec3(5.5e-6,13.0e-6,22.4e-6),21e-6,8e3,1.2e3,0.758\\n);color.xyz=1.0-exp(-1.0*color.xyz);vec4 no_effect_color=vec4(0,0,0,0);gl_FragColor=mix(color,no_effect_color,1.0-u_atmosphere_blend);}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default 'attribute vec2 a_pos;uniform mat4 u_inv_proj_matrix;varying vec3 view_direction;void main() {view_direction=(u_inv_proj_matrix*vec4(a_pos,0.0,1.0)).xyz;gl_Position=vec4(a_pos,0.0,1.0);}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default 'uniform vec4 u_sky_color;uniform vec4 u_horizon_color;uniform vec2 u_horizon;uniform vec2 u_horizon_normal;uniform float u_sky_horizon_blend;uniform float u_sky_blend;void main() {float x=gl_FragCoord.x;float y=gl_FragCoord.y;float blend=(y-u_horizon.y)*u_horizon_normal.y+(x-u_horizon.x)*u_horizon_normal.x;if (blend > 0.0) {if (blend < u_sky_horizon_blend) {gl_FragColor=mix(u_sky_color,u_horizon_color,pow(1.0-blend/u_sky_horizon_blend,2.0));} else {gl_FragColor=u_sky_color;}}gl_FragColor=mix(gl_FragColor,vec4(vec3(0.0),0.0),u_sky_blend);}';\n","// This file is generated. Edit build/generate-shaders.ts, then run `npm run codegen`.\nexport default 'attribute vec2 a_pos;void main() {gl_Position=vec4(a_pos,1.0,1.0);}';\n","import {type SegmentVector} from '../data/segment';\nimport {type VertexBuffer} from '../gl/vertex_buffer';\nimport {type IndexBuffer} from '../gl/index_buffer';\n\nexport class Mesh {\n vertexBuffer: VertexBuffer;\n indexBuffer: IndexBuffer;\n segments: SegmentVector;\n\n constructor(vertexBuffer: VertexBuffer, indexBuffer: IndexBuffer, segments: SegmentVector) {\n this.vertexBuffer = vertexBuffer;\n this.indexBuffer = indexBuffer;\n this.segments = segments;\n }\n\n destroy(): void {\n this.vertexBuffer.destroy();\n this.indexBuffer.destroy();\n this.segments.destroy();\n\n this.vertexBuffer = null;\n this.indexBuffer = null;\n this.segments = null;\n }\n}\n","import {createLayout} from '../util/struct_array';\n\nexport default createLayout([\n {name: 'a_pos', type: 'Int16', components: 2}\n]);\n","import type {Projection, ProjectionGPUContext, TileMeshUsage} from './projection';\nimport type {CanonicalTileID} from '../../source/tile_id';\nimport {EXTENT} from '../../data/extent';\nimport {type PreparedShader, shaders} from '../../shaders/shaders';\nimport type {Context} from '../../gl/context';\nimport {Mesh} from '../../render/mesh';\nimport {PosArray, TriangleIndexArray} from '../../data/array_types.g';\nimport {SegmentVector} from '../../data/segment';\nimport posAttributes from '../../data/pos_attributes';\nimport {SubdivisionGranularitySetting} from '../../render/subdivision_granularity_settings';\n\nexport const MercatorShaderDefine = '#define PROJECTION_MERCATOR';\nexport const MercatorShaderVariantKey = 'mercator';\n\nexport class MercatorProjection implements Projection {\n private _cachedMesh: Mesh = null;\n\n get name(): 'mercator' {\n return 'mercator';\n }\n\n get useSubdivision(): boolean {\n // Mercator never uses subdivision.\n return false;\n }\n\n get shaderVariantName(): string {\n return MercatorShaderVariantKey;\n }\n\n get shaderDefine(): string {\n return MercatorShaderDefine;\n }\n\n get shaderPreludeCode(): PreparedShader {\n return shaders.projectionMercator;\n }\n\n get vertexShaderPreludeCode(): string {\n return shaders.projectionMercator.vertexSource;\n }\n\n get subdivisionGranularity(): SubdivisionGranularitySetting {\n return SubdivisionGranularitySetting.noSubdivision;\n }\n\n get useGlobeControls(): boolean {\n return false;\n }\n\n public destroy(): void {\n // Do nothing.\n }\n\n public isRenderingDirty(): boolean {\n // Mercator projection does no animations of its own, so rendering is never dirty from its perspective.\n return false;\n }\n\n public updateGPUdependent(_: ProjectionGPUContext): void {\n // Do nothing.\n }\n\n public getMeshFromTileID(context: Context, _tileID: CanonicalTileID, _hasBorder: boolean, _allowPoles: boolean, _usage: TileMeshUsage): Mesh {\n if (this._cachedMesh) {\n return this._cachedMesh;\n }\n\n // The parameters tileID, hasBorder and allowPoles are all ignored on purpose for mercator meshes.\n\n const tileExtentArray = new PosArray();\n tileExtentArray.emplaceBack(0, 0);\n tileExtentArray.emplaceBack(EXTENT, 0);\n tileExtentArray.emplaceBack(0, EXTENT);\n tileExtentArray.emplaceBack(EXTENT, EXTENT);\n const tileExtentBuffer = context.createVertexBuffer(tileExtentArray, posAttributes.members);\n const tileExtentSegments = SegmentVector.simpleSegment(0, 0, 4, 2);\n\n const quadTriangleIndices = new TriangleIndexArray();\n quadTriangleIndices.emplaceBack(1, 0, 2);\n quadTriangleIndices.emplaceBack(1, 2, 3);\n const quadTriangleIndexBuffer = context.createIndexBuffer(quadTriangleIndices);\n\n this._cachedMesh = new Mesh(tileExtentBuffer, quadTriangleIndexBuffer, tileExtentSegments);\n return this._cachedMesh;\n }\n}\n","import {mat4} from 'gl-matrix';\nimport {EXTENT} from '../../data/extent';\nimport {type OverscaledTileID} from '../../source/tile_id';\nimport {clamp, createIdentityMat4f32, degreesToRadians} from '../../util/util';\nimport {MAX_VALID_LATITUDE, type UnwrappedTileIDType, zoomScale} from '../transform_helper';\nimport {type LngLat} from '../lng_lat';\nimport {MercatorCoordinate, mercatorXfromLng, mercatorYfromLat, mercatorZfromAltitude} from '../mercator_coordinate';\nimport Point from '@mapbox/point-geometry';\nimport type {ProjectionData} from './projection_data';\n\n/*\n* The maximum angle to use for the Mercator horizon. This must be less than 90\n* to prevent errors in `MercatorTransform::_calcMatrices()`. It shouldn't be too close\n* to 90, or the distance to the horizon will become very large, unnecessarily increasing\n* the number of tiles needed to render the map.\n*/\nexport const maxMercatorHorizonAngle = 89.25;\n\n/**\n * Returns mercator coordinates in range 0..1 for given coordinates inside a specified tile.\n * @param inTileX - X coordinate in tile units - range [0..EXTENT].\n * @param inTileY - Y coordinate in tile units - range [0..EXTENT].\n * @param canonicalTileID - Tile canonical ID - mercator X, Y and zoom.\n * @returns Mercator coordinates of the specified point in range [0..1].\n */\nexport function tileCoordinatesToMercatorCoordinates(inTileX: number, inTileY: number, canonicalTileID: {x: number; y: number; z: number}): MercatorCoordinate {\n const scale = 1.0 / (1 << canonicalTileID.z);\n return new MercatorCoordinate(\n inTileX / EXTENT * scale + canonicalTileID.x * scale,\n inTileY / EXTENT * scale + canonicalTileID.y * scale\n );\n}\n\n/**\n * Returns LngLat for given in-tile coordinates and tile ID.\n * @param inTileX - X coordinate in tile units - range [0..EXTENT].\n * @param inTileY - Y coordinate in tile units - range [0..EXTENT].\n * @param canonicalTileID - Tile canonical ID - mercator X, Y and zoom.\n */\nexport function tileCoordinatesToLocation(inTileX: number, inTileY: number, canonicalTileID: {x: number; y: number; z: number}): LngLat {\n return tileCoordinatesToMercatorCoordinates(inTileX, inTileY, canonicalTileID).toLngLat();\n}\n\n/**\n * Given a geographical lnglat, return an unrounded\n * coordinate that represents it at low zoom level.\n * @param lnglat - the location\n * @returns The mercator coordinate\n */\nexport function locationToMercatorCoordinate(lnglat: LngLat): MercatorCoordinate {\n return MercatorCoordinate.fromLngLat(lnglat);\n}\n\n/**\n * Given a Coordinate, return its geographical position.\n * @param coord - mercator coordinates\n * @returns lng and lat\n */\nexport function mercatorCoordinateToLocation(coord: MercatorCoordinate): LngLat {\n return coord && coord.toLngLat();\n}\n\n/**\n * Convert from LngLat to world coordinates (Mercator coordinates scaled by world size).\n * @param worldSize - Mercator world size computed from zoom level and tile size.\n * @param lnglat - The location to convert.\n * @returns Point\n */\nexport function projectToWorldCoordinates(worldSize: number, lnglat: LngLat): Point {\n const lat = clamp(lnglat.lat, -MAX_VALID_LATITUDE, MAX_VALID_LATITUDE);\n return new Point(\n mercatorXfromLng(lnglat.lng) * worldSize,\n mercatorYfromLat(lat) * worldSize);\n}\n\n/**\n * Convert from world coordinates (mercator coordinates scaled by world size) to LngLat.\n * @param worldSize - Mercator world size computed from zoom level and tile size.\n * @param point - World coordinate.\n * @returns LngLat\n */\nexport function unprojectFromWorldCoordinates(worldSize: number, point: Point): LngLat {\n return new MercatorCoordinate(point.x / worldSize, point.y / worldSize).toLngLat();\n}\n\n/**\n * Calculate pixel height of the visible horizon in relation to map-center (e.g. height/2),\n * multiplied by a static factor to simulate the earth-radius.\n * The calculated value is the horizontal line from the camera-height to sea-level.\n * @returns Horizon above center in pixels.\n */\nexport function getMercatorHorizon(transform: {pitch: number; cameraToCenterDistance: number}): number {\n return transform.cameraToCenterDistance * Math.min(Math.tan(degreesToRadians(90 - transform.pitch)) * 0.85,\n Math.tan(degreesToRadians(maxMercatorHorizonAngle - transform.pitch)));\n}\n\nexport function getBasicProjectionData(overscaledTileID: OverscaledTileID, tilePosMatrix?: mat4, applyTerrainMatrix: boolean = true): ProjectionData {\n let tileOffsetSize: [number, number, number, number];\n\n if (overscaledTileID) {\n const scale = (overscaledTileID.canonical.z >= 0) ? (1 << overscaledTileID.canonical.z) : Math.pow(2.0, overscaledTileID.canonical.z);\n tileOffsetSize = [\n overscaledTileID.canonical.x / scale,\n overscaledTileID.canonical.y / scale,\n 1.0 / scale / EXTENT,\n 1.0 / scale / EXTENT\n ];\n } else {\n tileOffsetSize = [0, 0, 1, 1];\n }\n\n let mainMatrix: mat4;\n if (overscaledTileID && overscaledTileID.terrainRttPosMatrix32f && applyTerrainMatrix) {\n mainMatrix = overscaledTileID.terrainRttPosMatrix32f;\n } else if (tilePosMatrix) {\n mainMatrix = tilePosMatrix; // This matrix should be float32\n } else {\n mainMatrix = createIdentityMat4f32();\n }\n\n const data: ProjectionData = {\n mainMatrix, // Might be set to a custom matrix by different projections.\n tileMercatorCoords: tileOffsetSize,\n clippingPlane: [0, 0, 0, 0],\n projectionTransition: 0.0, // Range 0..1, where 0 is mercator, 1 is another projection, mostly globe.\n fallbackMatrix: mainMatrix,\n };\n\n return data;\n}\n\nexport function calculateTileMatrix(unwrappedTileID: UnwrappedTileIDType, worldSize: number): mat4 {\n const canonical = unwrappedTileID.canonical;\n const scale = worldSize / zoomScale(canonical.z);\n const unwrappedX = canonical.x + Math.pow(2, canonical.z) * unwrappedTileID.wrap;\n\n const worldMatrix = mat4.identity(new Float64Array(16) as any);\n mat4.translate(worldMatrix, worldMatrix, [unwrappedX * scale, canonical.y * scale, 0]);\n mat4.scale(worldMatrix, worldMatrix, [scale / EXTENT, scale / EXTENT, 1]);\n return worldMatrix;\n}\n\nexport function cameraMercatorCoordinateFromCenterAndRotation(center: LngLat, elevation: number, pitch: number, bearing: number, distance: number): MercatorCoordinate {\n const centerMercator = MercatorCoordinate.fromLngLat(center, elevation);\n const mercUnitsPerMeter = mercatorZfromAltitude(1, center.lat);\n const dMercator = distance * mercUnitsPerMeter;\n const dzMercator = dMercator * Math.cos(degreesToRadians(pitch));\n const dhMercator = Math.sqrt(dMercator * dMercator - dzMercator * dzMercator);\n const dxMercator = dhMercator * Math.sin(degreesToRadians(-bearing));\n const dyMercator = dhMercator * Math.cos(degreesToRadians(-bearing));\n return new MercatorCoordinate(centerMercator.x + dxMercator, centerMercator.y + dyMercator, centerMercator.z + dzMercator);\n}\n","import {vec3, type vec4} from 'gl-matrix';\nimport {type Frustum} from './frustum';\n\nexport const enum IntersectionResult {\n None = 0,\n Partial = 1,\n Full = 2,\n}\n\nexport class Aabb {\n min: vec3;\n max: vec3;\n center: vec3;\n\n constructor(min_: vec3, max_: vec3) {\n this.min = min_;\n this.max = max_;\n this.center = vec3.scale([] as any, vec3.add([] as any, this.min, this.max), 0.5);\n }\n\n quadrant(index: number): Aabb {\n const split = [(index % 2) === 0, index < 2];\n const qMin = vec3.clone(this.min);\n const qMax = vec3.clone(this.max);\n for (let axis = 0; axis < split.length; axis++) {\n qMin[axis] = split[axis] ? this.min[axis] : this.center[axis];\n qMax[axis] = split[axis] ? this.center[axis] : this.max[axis];\n }\n // Elevation is always constant, hence quadrant.max.z = this.max.z\n qMax[2] = this.max[2];\n return new Aabb(qMin, qMax);\n }\n\n distanceX(point: Array): number {\n const pointOnAabb = Math.max(Math.min(this.max[0], point[0]), this.min[0]);\n return pointOnAabb - point[0];\n }\n\n distanceY(point: Array): number {\n const pointOnAabb = Math.max(Math.min(this.max[1], point[1]), this.min[1]);\n return pointOnAabb - point[1];\n }\n\n /**\n * Performs a frustum-aabb intersection test.\n */\n intersectsFrustum(frustum: Frustum): IntersectionResult {\n // Execute separating axis test between two convex objects to find intersections\n // Each frustum plane together with 3 major axes define the separating axes\n let fullyInside = true;\n\n for (let p = 0; p < frustum.planes.length; p++) {\n const planeIntersection = this.intersectsPlane(frustum.planes[p]);\n\n if (planeIntersection === IntersectionResult.None) {\n return IntersectionResult.None;\n }\n if (planeIntersection === IntersectionResult.Partial) {\n fullyInside = false;\n }\n }\n\n if (fullyInside) {\n return IntersectionResult.Full;\n }\n\n if (frustum.aabb.min[0] > this.max[0] || frustum.aabb.min[1] > this.max[1] || frustum.aabb.min[2] > this.max[2] ||\n frustum.aabb.max[0] < this.min[0] || frustum.aabb.max[1] < this.min[1] || frustum.aabb.max[2] < this.min[2]) {\n return IntersectionResult.None;\n }\n\n return IntersectionResult.Partial;\n }\n\n /**\n * Performs a halfspace-aabb intersection test.\n */\n intersectsPlane(plane: vec4): IntersectionResult {\n let distMin = plane[3];\n let distMax = plane[3];\n for (let i = 0; i < 3; i++) {\n if (plane[i] > 0) {\n distMin += plane[i] * this.min[i];\n distMax += plane[i] * this.max[i];\n } else {\n distMax += plane[i] * this.min[i];\n distMin += plane[i] * this.max[i];\n }\n }\n\n if (distMin >= 0) {\n return IntersectionResult.Full;\n }\n if (distMax < 0) {\n return IntersectionResult.None;\n }\n return IntersectionResult.Partial;\n }\n}\n","import {OverscaledTileID} from '../../source/tile_id';\nimport {Aabb} from '../../util/primitives/aabb';\nimport {clamp} from '../../util/util';\nimport {type MercatorCoordinate} from '../mercator_coordinate';\nimport {type IReadonlyTransform} from '../transform_interface';\nimport {type CoveringTilesOptions} from './covering_tiles';\nimport {type CoveringTilesDetailsProvider} from './covering_tiles_details_provider';\n\nexport class MercatorCoveringTilesDetailsProvider implements CoveringTilesDetailsProvider {\n\n distanceToTile2d(pointX: number, pointY: number, tileID: {x: number; y: number; z: number}, aabb: Aabb): number {\n const distanceX = aabb.distanceX([pointX, pointY]);\n const distanceY = aabb.distanceY([pointX, pointY]);\n return Math.hypot(distanceX, distanceY);\n }\n\n /**\n * Returns the wrap value for a given tile, computed so that tiles will remain loaded when crossing the antimeridian.\n */\n getWrap(centerCoord: MercatorCoordinate, tileID: {x:number; y: number; z: number}, parentWrap: number): number {\n return parentWrap;\n }\n\n /**\n * Returns the AABB of the specified tile.\n * @param tileID - Tile x, y and z for zoom.\n */\n getTileAABB(tileID: {x: number; y: number; z: number}, wrap: number, elevation: number, options: CoveringTilesOptions): Aabb {\n let minElevation = elevation;\n let maxElevation = elevation;\n if (options.terrain) {\n const overscaledTileID = new OverscaledTileID(tileID.z, wrap, tileID.z, tileID.x, tileID.y);\n const minMax = options.terrain.getMinMaxElevation(overscaledTileID);\n minElevation = minMax.minElevation ?? elevation;\n maxElevation = minMax.maxElevation ?? elevation;\n }\n const numTiles = 1 << tileID.z;\n return new Aabb([wrap + tileID.x / numTiles, tileID.y / numTiles, minElevation],\n [wrap + (tileID.x + 1) / numTiles, (tileID.y + 1) / numTiles, maxElevation]);\n }\n \n allowVariableZoom(transform: IReadonlyTransform, options: CoveringTilesOptions): boolean {\n const zfov = transform.fov * (Math.abs(Math.cos(transform.rollInRadians)) * transform.height + Math.abs(Math.sin(transform.rollInRadians)) * transform.width) / transform.height;\n const maxConstantZoomPitch = clamp(78.5 - zfov / 2, 0.0, 60.0);\n return (!!options.terrain || transform.pitch > maxConstantZoomPitch || transform.padding.top >= 0.1)\n }\n\n allowWorldCopies(): boolean {\n return true;\n }\n}","import {type mat4, vec3, vec4} from 'gl-matrix';\nimport {Aabb} from './aabb';\n\nexport class Frustum {\n\n constructor(public points: vec4[], public planes: vec4[], public aabb: Aabb) { }\n\n public static fromInvProjectionMatrix(invProj: mat4, worldSize: number = 1, zoom: number = 0): Frustum {\n const clipSpaceCorners = [\n [-1, 1, -1, 1],\n [1, 1, -1, 1],\n [1, -1, -1, 1],\n [-1, -1, -1, 1],\n [-1, 1, 1, 1],\n [1, 1, 1, 1],\n [1, -1, 1, 1],\n [-1, -1, 1, 1]\n ];\n\n const scale = Math.pow(2, zoom);\n\n // Transform frustum corner points from clip space to tile space, Z to meters\n const frustumCoords = clipSpaceCorners.map(v => {\n v = vec4.transformMat4([] as any, v as any, invProj) as any;\n const s = 1.0 / v[3] / worldSize * scale;\n return vec4.mul(v as any, v as any, [s, s, 1.0 / v[3], s] as vec4);\n });\n\n const frustumPlanePointIndices = [\n [0, 1, 2], // near\n [6, 5, 4], // far\n [0, 3, 7], // left\n [2, 1, 5], // right\n [3, 2, 6], // bottom\n [0, 4, 5] // top\n ];\n\n const frustumPlanes = frustumPlanePointIndices.map((p: number[]) => {\n const a = vec3.sub([] as any, frustumCoords[p[0]] as vec3, frustumCoords[p[1]] as vec3);\n const b = vec3.sub([] as any, frustumCoords[p[2]] as vec3, frustumCoords[p[1]] as vec3);\n const n = vec3.normalize([] as any, vec3.cross([] as any, a, b)) as any;\n const d = -vec3.dot(n, frustumCoords[p[1]] as vec3);\n return n.concat(d);\n });\n\n const min: vec3 = [Number.POSITIVE_INFINITY, Number.POSITIVE_INFINITY, Number.POSITIVE_INFINITY];\n const max: vec3 = [Number.NEGATIVE_INFINITY, Number.NEGATIVE_INFINITY, Number.NEGATIVE_INFINITY];\n\n for (const p of frustumCoords) {\n for (let i = 0; i < 3; i++) {\n min[i] = Math.min(min[i], p[i]);\n max[i] = Math.max(max[i], p[i]);\n }\n }\n\n return new Frustum(frustumCoords, frustumPlanes, new Aabb(min, max));\n }\n}\n","import {LngLat, type LngLatLike} from '../lng_lat';\nimport {altitudeFromMercatorZ, MercatorCoordinate, mercatorXfromLng, mercatorYfromLat, mercatorZfromAltitude} from '../mercator_coordinate';\nimport Point from '@mapbox/point-geometry';\nimport {wrap, clamp, createIdentityMat4f64, createMat4f64, degreesToRadians} from '../../util/util';\nimport {type mat2, mat4, vec3, vec4} from 'gl-matrix';\nimport {UnwrappedTileID, OverscaledTileID, type CanonicalTileID, calculateTileKey} from '../../source/tile_id';\nimport {type Terrain} from '../../render/terrain';\nimport {interpolates} from '@maplibre/maplibre-gl-style-spec';\nimport {type PointProjection, xyTransformMat4} from '../../symbol/projection';\nimport {LngLatBounds} from '../lng_lat_bounds';\nimport {type IReadonlyTransform, type ITransform, type TransformUpdateResult} from '../transform_interface';\nimport {type PaddingOptions} from '../edge_insets';\nimport {mercatorCoordinateToLocation, getBasicProjectionData, getMercatorHorizon, locationToMercatorCoordinate, projectToWorldCoordinates, unprojectFromWorldCoordinates, calculateTileMatrix, maxMercatorHorizonAngle, cameraMercatorCoordinateFromCenterAndRotation} from './mercator_utils';\nimport {EXTENT} from '../../data/extent';\nimport type {ProjectionData, ProjectionDataParams} from './projection_data';\nimport {scaleZoom, TransformHelper, zoomScale} from '../transform_helper';\nimport {MercatorCoveringTilesDetailsProvider} from './mercator_covering_tiles_details_provider';\nimport {Frustum} from '../../util/primitives/frustum';\nimport {type CoveringTilesDetailsProvider} from './covering_tiles_details_provider';\n\nexport class MercatorTransform implements ITransform {\n private _helper: TransformHelper;\n\n //\n // Implementation of transform getters and setters\n //\n\n get pixelsToClipSpaceMatrix(): mat4 {\n return this._helper.pixelsToClipSpaceMatrix;\n }\n get clipSpaceToPixelsMatrix(): mat4 {\n return this._helper.clipSpaceToPixelsMatrix;\n }\n get pixelsToGLUnits(): [number, number] {\n return this._helper.pixelsToGLUnits;\n }\n get centerOffset(): Point {\n return this._helper.centerOffset;\n }\n get size(): Point {\n return this._helper.size;\n }\n get rotationMatrix(): mat2 {\n return this._helper.rotationMatrix;\n }\n get centerPoint(): Point {\n return this._helper.centerPoint;\n }\n get pixelsPerMeter(): number {\n return this._helper.pixelsPerMeter;\n }\n setMinZoom(zoom: number): void {\n this._helper.setMinZoom(zoom);\n }\n setMaxZoom(zoom: number): void {\n this._helper.setMaxZoom(zoom);\n }\n setMinPitch(pitch: number): void {\n this._helper.setMinPitch(pitch);\n }\n setMaxPitch(pitch: number): void {\n this._helper.setMaxPitch(pitch);\n }\n setRenderWorldCopies(renderWorldCopies: boolean): void {\n this._helper.setRenderWorldCopies(renderWorldCopies);\n }\n setBearing(bearing: number): void {\n this._helper.setBearing(bearing);\n }\n setPitch(pitch: number): void {\n this._helper.setPitch(pitch);\n }\n setRoll(roll: number): void {\n this._helper.setRoll(roll);\n }\n setFov(fov: number): void {\n this._helper.setFov(fov);\n }\n setZoom(zoom: number): void {\n this._helper.setZoom(zoom);\n }\n setCenter(center: LngLat): void {\n this._helper.setCenter(center);\n }\n setElevation(elevation: number): void {\n this._helper.setElevation(elevation);\n }\n setMinElevationForCurrentTile(elevation: number): void {\n this._helper.setMinElevationForCurrentTile(elevation);\n }\n setPadding(padding: PaddingOptions): void {\n this._helper.setPadding(padding);\n }\n interpolatePadding(start: PaddingOptions, target: PaddingOptions, t: number): void {\n return this._helper.interpolatePadding(start, target, t);\n }\n isPaddingEqual(padding: PaddingOptions): boolean {\n return this._helper.isPaddingEqual(padding);\n }\n resize(width: number, height: number): void {\n this._helper.resize(width, height);\n }\n getMaxBounds(): LngLatBounds {\n return this._helper.getMaxBounds();\n }\n setMaxBounds(bounds?: LngLatBounds): void {\n this._helper.setMaxBounds(bounds);\n }\n getCameraQueryGeometry(queryGeometry: Point[]): Point[] {\n return this._helper.getCameraQueryGeometry(this.getCameraPoint(), queryGeometry);\n }\n\n get tileSize(): number {\n return this._helper.tileSize;\n }\n get tileZoom(): number {\n return this._helper.tileZoom;\n }\n get scale(): number {\n return this._helper.scale;\n }\n get worldSize(): number {\n return this._helper.worldSize;\n }\n get width(): number {\n return this._helper.width;\n }\n get height(): number {\n return this._helper.height;\n }\n get lngRange(): [number, number] {\n return this._helper.lngRange;\n }\n get latRange(): [number, number] {\n return this._helper.latRange;\n }\n get minZoom(): number {\n return this._helper.minZoom;\n }\n get maxZoom(): number {\n return this._helper.maxZoom;\n }\n get zoom(): number {\n return this._helper.zoom;\n }\n get center(): LngLat {\n return this._helper.center;\n }\n get minPitch(): number {\n return this._helper.minPitch;\n }\n get maxPitch(): number {\n return this._helper.maxPitch;\n }\n get pitch(): number {\n return this._helper.pitch;\n }\n get pitchInRadians(): number {\n return this._helper.pitchInRadians;\n }\n get roll(): number {\n return this._helper.roll;\n }\n get rollInRadians(): number {\n return this._helper.rollInRadians;\n }\n get bearing(): number {\n return this._helper.bearing;\n }\n get bearingInRadians(): number {\n return this._helper.bearingInRadians;\n }\n get fov(): number {\n return this._helper.fov;\n }\n get fovInRadians(): number {\n return this._helper.fovInRadians;\n }\n get elevation(): number {\n return this._helper.elevation;\n }\n get minElevationForCurrentTile(): number {\n return this._helper.minElevationForCurrentTile;\n }\n get padding(): PaddingOptions {\n return this._helper.padding;\n }\n get unmodified(): boolean {\n return this._helper.unmodified;\n }\n get renderWorldCopies(): boolean {\n return this._helper.renderWorldCopies;\n }\n\n //\n // Implementation of mercator transform\n //\n\n private _cameraToCenterDistance: number;\n private _cameraPosition: vec3;\n\n private _mercatorMatrix: mat4;\n private _projectionMatrix: mat4;\n private _viewProjMatrix: mat4;\n private _invViewProjMatrix: mat4;\n private _invProjMatrix: mat4;\n private _alignedProjMatrix: mat4;\n private _pixelMatrix: mat4;\n private _pixelMatrix3D: mat4;\n private _pixelMatrixInverse: mat4;\n private _fogMatrix: mat4;\n\n private _posMatrixCache: Map = new Map();\n private _alignedPosMatrixCache: Map = new Map();\n private _fogMatrixCacheF32: Map = new Map();\n\n private _nearZ;\n private _farZ;\n\n private _coveringTilesDetailsProvider;\n\n constructor(minZoom?: number, maxZoom?: number, minPitch?: number, maxPitch?: number, renderWorldCopies?: boolean) {\n this._helper = new TransformHelper({\n calcMatrices: () => { this._calcMatrices(); },\n getConstrained: (center, zoom) => { return this.getConstrained(center, zoom); }\n }, minZoom, maxZoom, minPitch, maxPitch, renderWorldCopies);\n this._coveringTilesDetailsProvider = new MercatorCoveringTilesDetailsProvider();\n }\n\n public clone(): ITransform {\n const clone = new MercatorTransform();\n clone.apply(this);\n return clone;\n }\n\n public apply(that: IReadonlyTransform, constrain?: boolean): void {\n this._helper.apply(that, constrain);\n }\n\n public get cameraToCenterDistance(): number { return this._cameraToCenterDistance; }\n public get cameraPosition(): vec3 { return this._cameraPosition; }\n public get projectionMatrix(): mat4 { return this._projectionMatrix; }\n public get modelViewProjectionMatrix(): mat4 { return this._viewProjMatrix; }\n public get inverseProjectionMatrix(): mat4 { return this._invProjMatrix; }\n public get nearZ(): number { return this._nearZ; }\n public get farZ(): number { return this._farZ; }\n\n public get mercatorMatrix(): mat4 { return this._mercatorMatrix; } // Not part of ITransform interface\n\n getVisibleUnwrappedCoordinates(tileID: CanonicalTileID): Array {\n const result = [new UnwrappedTileID(0, tileID)];\n if (this._helper._renderWorldCopies) {\n const utl = this.screenPointToMercatorCoordinate(new Point(0, 0));\n const utr = this.screenPointToMercatorCoordinate(new Point(this._helper._width, 0));\n const ubl = this.screenPointToMercatorCoordinate(new Point(this._helper._width, this._helper._height));\n const ubr = this.screenPointToMercatorCoordinate(new Point(0, this._helper._height));\n const w0 = Math.floor(Math.min(utl.x, utr.x, ubl.x, ubr.x));\n const w1 = Math.floor(Math.max(utl.x, utr.x, ubl.x, ubr.x));\n\n // Add an extra copy of the world on each side to properly render ImageSources and CanvasSources.\n // Both sources draw outside the tile boundaries of the tile that \"contains them\" so we need\n // to add extra copies on both sides in case offscreen tiles need to draw into on-screen ones.\n const extraWorldCopy = 1;\n\n for (let w = w0 - extraWorldCopy; w <= w1 + extraWorldCopy; w++) {\n if (w === 0) continue;\n result.push(new UnwrappedTileID(w, tileID));\n }\n }\n return result;\n }\n\n getCameraFrustum(): Frustum {\n return Frustum.fromInvProjectionMatrix(this._invViewProjMatrix, this.worldSize);\n }\n getClippingPlane(): vec4 | null {\n return null;\n }\n getCoveringTilesDetailsProvider(): CoveringTilesDetailsProvider {\n return this._coveringTilesDetailsProvider;\n }\n\n recalculateZoomAndCenter(terrain?: Terrain): void {\n // find position the camera is looking on\n const center = this.screenPointToLocation(this.centerPoint, terrain);\n const elevation = terrain ? terrain.getElevationForLngLatZoom(center, this._helper._tileZoom) : 0;\n const deltaElevation = this.elevation - elevation;\n if (!deltaElevation) return;\n\n // Find the current camera position\n const originalPixelPerMeter = mercatorZfromAltitude(1, this.center.lat) * this.worldSize;\n const cameraToCenterDistanceMeters = this._cameraToCenterDistance / originalPixelPerMeter;\n const origCenterMercator = MercatorCoordinate.fromLngLat(this.center, this.elevation);\n const cameraMercator = cameraMercatorCoordinateFromCenterAndRotation(this.center, this.elevation, this.pitch, this.bearing, cameraToCenterDistanceMeters);\n\n // update elevation to the new terrain intercept elevation and recalculate the center point\n this._helper._elevation = elevation;\n const centerInfo = this.calculateCenterFromCameraLngLatAlt(cameraMercator.toLngLat(), altitudeFromMercatorZ(cameraMercator.z, origCenterMercator.y), this.bearing, this.pitch);\n\n // update matrices\n this._helper._elevation = centerInfo.elevation;\n this._helper._center = centerInfo.center;\n this.setZoom(centerInfo.zoom);\n }\n\n setLocationAtPoint(lnglat: LngLat, point: Point) {\n const z = mercatorZfromAltitude(this.elevation, this.center.lat);\n const a = this.screenPointToMercatorCoordinateAtZ(point, z);\n const b = this.screenPointToMercatorCoordinateAtZ(this.centerPoint, z);\n const loc = locationToMercatorCoordinate(lnglat);\n const newCenter = new MercatorCoordinate(\n loc.x - (a.x - b.x),\n loc.y - (a.y - b.y));\n this.setCenter(mercatorCoordinateToLocation(newCenter));\n if (this._helper._renderWorldCopies) {\n this.setCenter(this.center.wrap());\n }\n }\n\n locationToScreenPoint(lnglat: LngLat, terrain?: Terrain): Point {\n return terrain ?\n this.coordinatePoint(locationToMercatorCoordinate(lnglat), terrain.getElevationForLngLatZoom(lnglat, this._helper._tileZoom), this._pixelMatrix3D) :\n this.coordinatePoint(locationToMercatorCoordinate(lnglat));\n }\n\n screenPointToLocation(p: Point, terrain?: Terrain): LngLat {\n return mercatorCoordinateToLocation(this.screenPointToMercatorCoordinate(p, terrain));\n }\n\n screenPointToMercatorCoordinate(p: Point, terrain?: Terrain): MercatorCoordinate {\n // get point-coordinate from terrain coordinates framebuffer\n if (terrain) {\n const coordinate = terrain.pointCoordinate(p);\n if (coordinate != null) {\n return coordinate;\n }\n }\n return this.screenPointToMercatorCoordinateAtZ(p);\n }\n\n screenPointToMercatorCoordinateAtZ(p: Point, mercatorZ?: number): MercatorCoordinate {\n\n // calculate point-coordinate on flat earth\n const targetZ = mercatorZ ? mercatorZ : 0;\n // since we don't know the correct projected z value for the point,\n // unproject two points to get a line and then find the point on that\n // line with z=0\n\n const coord0 = [p.x, p.y, 0, 1] as vec4;\n const coord1 = [p.x, p.y, 1, 1] as vec4;\n\n vec4.transformMat4(coord0, coord0, this._pixelMatrixInverse);\n vec4.transformMat4(coord1, coord1, this._pixelMatrixInverse);\n\n const w0 = coord0[3];\n const w1 = coord1[3];\n const x0 = coord0[0] / w0;\n const x1 = coord1[0] / w1;\n const y0 = coord0[1] / w0;\n const y1 = coord1[1] / w1;\n const z0 = coord0[2] / w0;\n const z1 = coord1[2] / w1;\n\n const t = z0 === z1 ? 0 : (targetZ - z0) / (z1 - z0);\n\n return new MercatorCoordinate(\n interpolates.number(x0, x1, t) / this.worldSize,\n interpolates.number(y0, y1, t) / this.worldSize,\n targetZ);\n }\n\n /**\n * Given a coordinate, return the screen point that corresponds to it\n * @param coord - the coordinates\n * @param elevation - the elevation\n * @param pixelMatrix - the pixel matrix\n * @returns screen point\n */\n coordinatePoint(coord: MercatorCoordinate, elevation: number = 0, pixelMatrix: mat4 = this._pixelMatrix): Point {\n const p = [coord.x * this.worldSize, coord.y * this.worldSize, elevation, 1] as vec4;\n vec4.transformMat4(p, p, pixelMatrix);\n return new Point(p[0] / p[3], p[1] / p[3]);\n }\n\n getBounds(): LngLatBounds {\n const top = Math.max(0, this._helper._height / 2 - getMercatorHorizon(this));\n return new LngLatBounds()\n .extend(this.screenPointToLocation(new Point(0, top)))\n .extend(this.screenPointToLocation(new Point(this._helper._width, top)))\n .extend(this.screenPointToLocation(new Point(this._helper._width, this._helper._height)))\n .extend(this.screenPointToLocation(new Point(0, this._helper._height)));\n }\n\n isPointOnMapSurface(p: Point, terrain?: Terrain): boolean {\n if (terrain) {\n const coordinate = terrain.pointCoordinate(p);\n return coordinate != null;\n }\n return (p.y > this.height / 2 - getMercatorHorizon(this));\n }\n\n /**\n * Calculate the posMatrix that, given a tile coordinate, would be used to display the tile on a map.\n * This function is specific to the mercator projection.\n * @param tileID - the tile ID\n * @param aligned - whether to use a pixel-aligned matrix variant, intended for rendering raster tiles\n * @param useFloat32 - when true, returns a float32 matrix instead of float64. Use float32 for matrices that are passed to shaders, use float64 for everything else.\n */\n calculatePosMatrix(tileID: UnwrappedTileID | OverscaledTileID, aligned: boolean = false, useFloat32?: boolean): mat4 {\n const posMatrixKey = tileID.key ?? calculateTileKey(tileID.wrap, tileID.canonical.z, tileID.canonical.z, tileID.canonical.x, tileID.canonical.y);\n const cache = aligned ? this._alignedPosMatrixCache : this._posMatrixCache;\n if (cache.has(posMatrixKey)) {\n const matrices = cache.get(posMatrixKey);\n return useFloat32 ? matrices.f32 : matrices.f64;\n }\n\n const tileMatrix = calculateTileMatrix(tileID, this.worldSize);\n mat4.multiply(tileMatrix, aligned ? this._alignedProjMatrix : this._viewProjMatrix, tileMatrix);\n const matrices = {\n f64: tileMatrix,\n f32: new Float32Array(tileMatrix), // Must have a 32 bit float version for WebGL, otherwise WebGL calls in Chrome get very slow.\n }\n cache.set(posMatrixKey, matrices);\n // Make sure to return the correct precision\n return useFloat32 ? matrices.f32 : matrices.f64;\n }\n\n calculateFogMatrix(unwrappedTileID: UnwrappedTileID): mat4 {\n const posMatrixKey = unwrappedTileID.key;\n const cache = this._fogMatrixCacheF32;\n if (cache.has(posMatrixKey)) {\n return cache.get(posMatrixKey);\n }\n\n const fogMatrix = calculateTileMatrix(unwrappedTileID, this.worldSize);\n mat4.multiply(fogMatrix, this._fogMatrix, fogMatrix);\n\n cache.set(posMatrixKey, new Float32Array(fogMatrix)); // Must be 32 bit floats, otherwise WebGL calls in Chrome get very slow.\n return cache.get(posMatrixKey);\n }\n\n /**\n * This mercator implementation returns center lngLat and zoom to ensure that:\n *\n * 1) everything beyond the bounds is excluded\n * 2) a given lngLat is as near the center as possible\n *\n * Bounds are those set by maxBounds or North & South \"Poles\" and, if only 1 globe is displayed, antimeridian.\n */\n getConstrained(lngLat: LngLat, zoom: number): {center: LngLat; zoom: number} {\n zoom = clamp(+zoom, this.minZoom, this.maxZoom);\n const result = {\n center: new LngLat(lngLat.lng, lngLat.lat),\n zoom\n };\n\n let lngRange = this._helper._lngRange;\n\n if (!this._helper._renderWorldCopies && lngRange === null) {\n const almost180 = 180 - 1e-10;\n lngRange = [-almost180, almost180];\n }\n\n const worldSize = this.tileSize * zoomScale(result.zoom); // A world size for the requested zoom level, not the current world size\n let minY = 0;\n let maxY = worldSize;\n let minX = 0;\n let maxX = worldSize;\n let scaleY = 0;\n let scaleX = 0;\n const {x: screenWidth, y: screenHeight} = this.size;\n\n if (this._helper._latRange) {\n const latRange = this._helper._latRange;\n minY = mercatorYfromLat(latRange[1]) * worldSize;\n maxY = mercatorYfromLat(latRange[0]) * worldSize;\n const shouldZoomIn = maxY - minY < screenHeight;\n if (shouldZoomIn) scaleY = screenHeight / (maxY - minY);\n }\n\n if (lngRange) {\n minX = wrap(\n mercatorXfromLng(lngRange[0]) * worldSize,\n 0,\n worldSize\n );\n maxX = wrap(\n mercatorXfromLng(lngRange[1]) * worldSize,\n 0,\n worldSize\n );\n\n if (maxX < minX) maxX += worldSize;\n\n const shouldZoomIn = maxX - minX < screenWidth;\n if (shouldZoomIn) scaleX = screenWidth / (maxX - minX);\n }\n\n const {x: originalX, y: originalY} = projectToWorldCoordinates(worldSize, lngLat);\n let modifiedX, modifiedY;\n\n const scale = Math.max(scaleX || 0, scaleY || 0);\n\n if (scale) {\n // zoom in to exclude all beyond the given lng/lat ranges\n const newPoint = new Point(\n scaleX ? (maxX + minX) / 2 : originalX,\n scaleY ? (maxY + minY) / 2 : originalY);\n result.center = unprojectFromWorldCoordinates(worldSize, newPoint).wrap();\n result.zoom += scaleZoom(scale);\n return result;\n }\n\n if (this._helper._latRange) {\n const h2 = screenHeight / 2;\n if (originalY - h2 < minY) modifiedY = minY + h2;\n if (originalY + h2 > maxY) modifiedY = maxY - h2;\n }\n\n if (lngRange) {\n const centerX = (minX + maxX) / 2;\n let wrappedX = originalX;\n if (this._helper._renderWorldCopies) {\n wrappedX = wrap(originalX, centerX - worldSize / 2, centerX + worldSize / 2);\n }\n const w2 = screenWidth / 2;\n\n if (wrappedX - w2 < minX) modifiedX = minX + w2;\n if (wrappedX + w2 > maxX) modifiedX = maxX - w2;\n }\n\n // pan the map if the screen goes off the range\n if (modifiedX !== undefined || modifiedY !== undefined) {\n const newPoint = new Point(modifiedX ?? originalX, modifiedY ?? originalY);\n result.center = unprojectFromWorldCoordinates(worldSize, newPoint).wrap();\n }\n\n return result;\n }\n\n calculateCenterFromCameraLngLatAlt(lnglat: LngLatLike, alt: number, bearing?: number, pitch?: number): {center: LngLat; elevation: number; zoom: number} {\n const cameraBearing = bearing !== undefined ? bearing : this.bearing;\n const cameraPitch = pitch = pitch !== undefined ? pitch : this.pitch;\n\n const camMercator = MercatorCoordinate.fromLngLat(lnglat, alt);\n const dzNormalized = -Math.cos(degreesToRadians(cameraPitch));\n const dhNormalized = Math.sin(degreesToRadians(cameraPitch));\n const dxNormalized = dhNormalized * Math.sin(degreesToRadians(cameraBearing));\n const dyNormalized = -dhNormalized * Math.cos(degreesToRadians(cameraBearing));\n\n let elevation = this.elevation;\n const altitudeAGL = alt - elevation;\n let distanceToCenterMeters;\n if (dzNormalized * altitudeAGL >= 0.0 || Math.abs(dzNormalized) < 0.1) {\n distanceToCenterMeters = 10000;\n elevation = alt + distanceToCenterMeters * dzNormalized;\n } else {\n distanceToCenterMeters = -altitudeAGL / dzNormalized;\n }\n\n // The mercator transform scale changes with latitude. At high latitudes, there are more \"Merc units\" per meter\n // than at the equator. We treat the center point as our fundamental quantity. This means we want to convert\n // elevation to Mercator Z using the scale factor at the center point (not the camera point). Since the center point is\n // initially unknown, we compute it using the scale factor at the camera point. This gives us a better estimate of the\n // center point scale factor, which we use to recompute the center point. We repeat until the error is very small.\n // This typically takes about 5 iterations.\n let metersPerMercUnit = altitudeFromMercatorZ(1, camMercator.y);\n let centerMercator: MercatorCoordinate;\n let dMercator: number;\n let iter = 0;\n const maxIter = 10;\n do {\n iter += 1;\n if (iter > maxIter) {\n break;\n }\n dMercator = distanceToCenterMeters / metersPerMercUnit;\n const dx = dxNormalized * dMercator;\n const dy = dyNormalized * dMercator;\n centerMercator = new MercatorCoordinate(camMercator.x + dx, camMercator.y + dy);\n metersPerMercUnit = 1 / centerMercator.meterInMercatorCoordinateUnits();\n } while (Math.abs(distanceToCenterMeters - dMercator * metersPerMercUnit) > 1.0e-12);\n\n const center = centerMercator.toLngLat();\n const zoom = scaleZoom(this.height / 2 / Math.tan(this.fovInRadians / 2) / dMercator / this.tileSize);\n return {center, elevation, zoom};\n }\n\n _calcMatrices(): void {\n if (!this._helper._height) return;\n\n const halfFov = this.fovInRadians / 2;\n const offset = this.centerOffset;\n const point = projectToWorldCoordinates(this.worldSize, this.center);\n const x = point.x, y = point.y;\n this._cameraToCenterDistance = 0.5 / Math.tan(halfFov) * this._helper._height;\n this._helper._pixelPerMeter = mercatorZfromAltitude(1, this.center.lat) * this.worldSize;\n\n // Calculate the camera to sea-level distance in pixel in respect of terrain\n const limitedPitchRadians = degreesToRadians(Math.min(this.pitch, maxMercatorHorizonAngle));\n const cameraToSeaLevelDistance = Math.max(this._cameraToCenterDistance / 2, this._cameraToCenterDistance + this._helper._elevation * this._helper._pixelPerMeter / Math.cos(limitedPitchRadians));\n // In case of negative minimum elevation (e.g. the dead see, under the sea maps) use a lower plane for calculation\n const minRenderDistanceBelowCameraInMeters = 100;\n const minElevation = Math.min(this.elevation, this.minElevationForCurrentTile, this.getCameraAltitude() - minRenderDistanceBelowCameraInMeters);\n const cameraToLowestPointDistance = cameraToSeaLevelDistance - minElevation * this._helper._pixelPerMeter / Math.cos(limitedPitchRadians);\n const lowestPlane = minElevation < 0 ? cameraToLowestPointDistance : cameraToSeaLevelDistance;\n\n // Find the distance from the center point [width/2 + offset.x, height/2 + offset.y] to the\n // center top point [width/2 + offset.x, 0] in Z units, using the law of sines.\n // 1 Z unit is equivalent to 1 horizontal px at the center of the map\n // (the distance between[width/2, height/2] and [width/2 + 1, height/2])\n const groundAngle = Math.PI / 2 + this.pitchInRadians;\n const zfov = degreesToRadians(this.fov) * (Math.abs(Math.cos(degreesToRadians(this.roll))) * this.height + Math.abs(Math.sin(degreesToRadians(this.roll))) * this.width) / this.height;\n const fovAboveCenter = zfov * (0.5 + offset.y / this.height);\n const topHalfSurfaceDistance = Math.sin(fovAboveCenter) * lowestPlane / Math.sin(clamp(Math.PI - groundAngle - fovAboveCenter, 0.01, Math.PI - 0.01));\n\n // Find the distance from the center point to the horizon\n const horizon = getMercatorHorizon(this);\n const horizonAngle = Math.atan(horizon / this._cameraToCenterDistance);\n const minFovCenterToHorizonRadians = degreesToRadians(90 - maxMercatorHorizonAngle);\n const fovCenterToHorizon = horizonAngle > minFovCenterToHorizonRadians ? 2 * horizonAngle * (0.5 + offset.y / (horizon * 2)) : minFovCenterToHorizonRadians;\n const topHalfSurfaceDistanceHorizon = Math.sin(fovCenterToHorizon) * lowestPlane / Math.sin(clamp(Math.PI - groundAngle - fovCenterToHorizon, 0.01, Math.PI - 0.01));\n\n // Calculate z distance of the farthest fragment that should be rendered.\n // Add a bit extra to avoid precision problems when a fragment's distance is exactly `furthestDistance`\n const topHalfMinDistance = Math.min(topHalfSurfaceDistance, topHalfSurfaceDistanceHorizon);\n this._farZ = (Math.cos(Math.PI / 2 - limitedPitchRadians) * topHalfMinDistance + lowestPlane) * 1.01;\n\n // The larger the value of nearZ is\n // - the more depth precision is available for features (good)\n // - clipping starts appearing sooner when the camera is close to 3d features (bad)\n //\n // Other values work for mapbox-gl-js but deck.gl was encountering precision issues\n // when rendering custom layers. This value was experimentally chosen and\n // seems to solve z-fighting issues in deck.gl while not clipping buildings too close to the camera.\n this._nearZ = this._helper._height / 50;\n\n // matrix for conversion from location to clip space(-1 .. 1)\n let m: mat4;\n m = new Float64Array(16) as any;\n mat4.perspective(m, this.fovInRadians, this._helper._width / this._helper._height, this._nearZ, this._farZ);\n this._invProjMatrix = new Float64Array(16) as any as mat4;\n mat4.invert(this._invProjMatrix, m);\n\n // Apply center of perspective offset\n m[8] = -offset.x * 2 / this._helper._width;\n m[9] = offset.y * 2 / this._helper._height;\n this._projectionMatrix = mat4.clone(m);\n\n mat4.scale(m, m, [1, -1, 1]);\n mat4.translate(m, m, [0, 0, -this._cameraToCenterDistance]);\n mat4.rotateZ(m, m, -this.rollInRadians);\n mat4.rotateX(m, m, this.pitchInRadians);\n mat4.rotateZ(m, m, -this.bearingInRadians);\n mat4.translate(m, m, [-x, -y, 0]);\n\n // The mercatorMatrix can be used to transform points from mercator coordinates\n // ([0, 0] nw, [1, 1] se) to clip space.\n this._mercatorMatrix = mat4.scale([] as any, m, [this.worldSize, this.worldSize, this.worldSize]);\n\n // scale vertically to meters per pixel (inverse of ground resolution):\n mat4.scale(m, m, [1, 1, this._helper._pixelPerMeter]);\n\n // matrix for conversion from world space to screen coordinates in 2D\n this._pixelMatrix = mat4.multiply(new Float64Array(16) as any, this.clipSpaceToPixelsMatrix, m);\n\n // matrix for conversion from world space to clip space (-1 .. 1)\n mat4.translate(m, m, [0, 0, -this.elevation]); // elevate camera over terrain\n this._viewProjMatrix = m;\n this._invViewProjMatrix = mat4.invert([] as any, m);\n\n const cameraPos: vec4 = [0, 0, -1, 1];\n vec4.transformMat4(cameraPos, cameraPos, this._invViewProjMatrix);\n this._cameraPosition = [\n cameraPos[0] / cameraPos[3],\n cameraPos[1] / cameraPos[3],\n cameraPos[2] / cameraPos[3]\n ];\n\n // create a fog matrix, same es proj-matrix but with near clipping-plane in mapcenter\n // needed to calculate a correct z-value for fog calculation, because projMatrix z value is not\n this._fogMatrix = new Float64Array(16) as any;\n mat4.perspective(this._fogMatrix, this.fovInRadians, this.width / this.height, cameraToSeaLevelDistance, this._farZ);\n this._fogMatrix[8] = -offset.x * 2 / this.width;\n this._fogMatrix[9] = offset.y * 2 / this.height;\n mat4.scale(this._fogMatrix, this._fogMatrix, [1, -1, 1]);\n mat4.translate(this._fogMatrix, this._fogMatrix, [0, 0, -this.cameraToCenterDistance]);\n mat4.rotateZ(this._fogMatrix, this._fogMatrix, -this.rollInRadians);\n mat4.rotateX(this._fogMatrix, this._fogMatrix, this.pitchInRadians);\n mat4.rotateZ(this._fogMatrix, this._fogMatrix, -this.bearingInRadians);\n mat4.translate(this._fogMatrix, this._fogMatrix, [-x, -y, 0]);\n mat4.scale(this._fogMatrix, this._fogMatrix, [1, 1, this._helper._pixelPerMeter]);\n mat4.translate(this._fogMatrix, this._fogMatrix, [0, 0, -this.elevation]); // elevate camera over terrain\n\n // matrix for conversion from world space to screen coordinates in 3D\n this._pixelMatrix3D = mat4.multiply(new Float64Array(16) as any, this.clipSpaceToPixelsMatrix, m);\n\n // Make a second projection matrix that is aligned to a pixel grid for rendering raster tiles.\n // We're rounding the (floating point) x/y values to achieve to avoid rendering raster images to fractional\n // coordinates. Additionally, we adjust by half a pixel in either direction in case that viewport dimension\n // is an odd integer to preserve rendering to the pixel grid. We're rotating this shift based on the angle\n // of the transformation so that 0°, 90°, 180°, and 270° rasters are crisp, and adjust the shift so that\n // it is always <= 0.5 pixels.\n const xShift = (this._helper._width % 2) / 2, yShift = (this._helper._height % 2) / 2,\n angleCos = Math.cos(this.bearingInRadians), angleSin = Math.sin(-this.bearingInRadians),\n dx = x - Math.round(x) + angleCos * xShift + angleSin * yShift,\n dy = y - Math.round(y) + angleCos * yShift + angleSin * xShift;\n const alignedM = new Float64Array(m) as any as mat4;\n mat4.translate(alignedM, alignedM, [dx > 0.5 ? dx - 1 : dx, dy > 0.5 ? dy - 1 : dy, 0]);\n this._alignedProjMatrix = alignedM;\n\n // inverse matrix for conversion from screen coordinates to location\n m = mat4.invert(new Float64Array(16) as any, this._pixelMatrix);\n if (!m) throw new Error('failed to invert matrix');\n this._pixelMatrixInverse = m;\n\n this._clearMatrixCaches();\n }\n\n private _clearMatrixCaches(): void {\n this._posMatrixCache.clear();\n this._alignedPosMatrixCache.clear();\n this._fogMatrixCacheF32.clear();\n }\n\n maxPitchScaleFactor(): number {\n // calcMatrices hasn't run yet\n if (!this._pixelMatrixInverse) return 1;\n\n const coord = this.screenPointToMercatorCoordinate(new Point(0, 0));\n const p = [coord.x * this.worldSize, coord.y * this.worldSize, 0, 1] as vec4;\n const topPoint = vec4.transformMat4(p, p, this._pixelMatrix);\n return topPoint[3] / this._cameraToCenterDistance;\n }\n\n getCameraPoint(): Point {\n const pitch = this.pitchInRadians;\n const offset = Math.tan(pitch) * (this._cameraToCenterDistance || 1);\n return this.centerPoint.add(new Point(offset*Math.sin(this.rollInRadians), offset*Math.cos(this.rollInRadians)));\n }\n\n getCameraAltitude(): number {\n const altitude = Math.cos(this.pitchInRadians) * this._cameraToCenterDistance / this._helper._pixelPerMeter;\n return altitude + this.elevation;\n }\n\n getCameraLngLat(): LngLat {\n const cameraToCenterDistancePixels = 0.5 / Math.tan(this.fovInRadians / 2) * this.height;\n const pixelPerMeter = mercatorZfromAltitude(1, this.center.lat) * this.worldSize;\n const cameraToCenterDistanceMeters = cameraToCenterDistancePixels / pixelPerMeter;\n const camMercator = cameraMercatorCoordinateFromCenterAndRotation(this.center, this.elevation, this.pitch, this.bearing, cameraToCenterDistanceMeters);\n return camMercator.toLngLat();\n }\n\n lngLatToCameraDepth(lngLat: LngLat, elevation: number) {\n const coord = locationToMercatorCoordinate(lngLat);\n const p = [coord.x * this.worldSize, coord.y * this.worldSize, elevation, 1] as vec4;\n vec4.transformMat4(p, p, this._viewProjMatrix);\n return (p[2] / p[3]);\n }\n\n isRenderingDirty(): boolean {\n return false;\n }\n\n getProjectionData(params: ProjectionDataParams): ProjectionData {\n const {overscaledTileID, aligned, applyTerrainMatrix} = params;\n const matrix = overscaledTileID ? this.calculatePosMatrix(overscaledTileID, aligned, true) : null;\n return getBasicProjectionData(overscaledTileID, matrix, applyTerrainMatrix);\n }\n\n isLocationOccluded(_: LngLat): boolean {\n return false;\n }\n\n getPixelScale(): number {\n return 1.0;\n }\n\n getCircleRadiusCorrection(): number {\n return 1.0;\n }\n\n getPitchedTextCorrection(_textAnchorX: number, _textAnchorY: number, _tileID: UnwrappedTileID): number {\n return 1.0;\n }\n\n newFrameUpdate(): TransformUpdateResult {\n return {};\n }\n\n transformLightDirection(dir: vec3): vec3 {\n return vec3.clone(dir);\n }\n\n getRayDirectionFromPixel(_p: Point): vec3 {\n throw new Error('Not implemented.'); // No need for this in mercator transform\n }\n\n projectTileCoordinates(x: number, y: number, unwrappedTileID: UnwrappedTileID, getElevation: (x: number, y: number) => number): PointProjection {\n const matrix = this.calculatePosMatrix(unwrappedTileID);\n let pos;\n if (getElevation) { // slow because of handle z-index\n pos = [x, y, getElevation(x, y), 1] as vec4;\n vec4.transformMat4(pos, pos, matrix);\n } else { // fast because of ignore z-index\n pos = [x, y, 0, 1] as vec4;\n xyTransformMat4(pos, pos, matrix);\n }\n const w = pos[3];\n return {\n point: new Point(pos[0] / w, pos[1] / w),\n signedDistanceFromCamera: w,\n isOccluded: false\n };\n }\n\n precacheTiles(coords: Array): void {\n for (const coord of coords) {\n // Return value is thrown away, but this function will still\n // place the pos matrix into the transform's internal cache.\n this.calculatePosMatrix(coord);\n }\n }\n\n getMatrixForModel(location: LngLatLike, altitude?: number): mat4 {\n const modelAsMercatorCoordinate = MercatorCoordinate.fromLngLat(\n location,\n altitude\n );\n const scale = modelAsMercatorCoordinate.meterInMercatorCoordinateUnits();\n\n const m = createIdentityMat4f64();\n mat4.translate(m, m, [modelAsMercatorCoordinate.x, modelAsMercatorCoordinate.y, modelAsMercatorCoordinate.z]);\n mat4.rotateZ(m, m, Math.PI);\n mat4.rotateX(m, m, Math.PI / 2);\n mat4.scale(m, m, [-scale, scale, scale]);\n return m;\n }\n\n getProjectionDataForCustomLayer(applyGlobeMatrix: boolean = true): ProjectionData {\n const tileID = new OverscaledTileID(0, 0, 0, 0, 0);\n const projectionData = this.getProjectionData({overscaledTileID: tileID, applyGlobeMatrix});\n\n const tileMatrix = calculateTileMatrix(tileID, this.worldSize);\n mat4.multiply(tileMatrix, this._viewProjMatrix, tileMatrix);\n\n projectionData.tileMercatorCoords = [0, 0, 1, 1];\n\n // Even though we requested projection data for the mercator base tile which covers the entire mercator range,\n // the shader projection machinery still expects inputs to be in tile units range [0..EXTENT].\n // Since custom layers are expected to supply mercator coordinates [0..1], we need to rescale\n // both matrices by EXTENT. We also need to rescale Z.\n\n const scale: vec3 = [EXTENT, EXTENT, this.worldSize / this._helper.pixelsPerMeter];\n\n // We pass full-precision 64bit float matrices to custom layers to prevent precision loss in case the user wants to do further transformations.\n const fallbackMatrixScaled = createMat4f64();\n mat4.scale(fallbackMatrixScaled, tileMatrix, scale);\n\n const projectionMatrixScaled = createMat4f64();\n mat4.scale(projectionMatrixScaled, tileMatrix, scale);\n\n projectionData.fallbackMatrix = fallbackMatrixScaled;\n projectionData.mainMatrix = projectionMatrixScaled;\n return projectionData;\n }\n\n getFastPathSimpleProjectionMatrix(tileID: OverscaledTileID): mat4 {\n return this.calculatePosMatrix(tileID);\n }\n}\n","import type Point from '@mapbox/point-geometry';\nimport {type IReadonlyTransform, type ITransform} from '../transform_interface';\nimport {type LngLat, type LngLatLike} from '../lng_lat';\nimport {type CameraForBoundsOptions, type PointLike} from '../../ui/camera';\nimport {type PaddingOptions} from '../edge_insets';\nimport {type LngLatBounds} from '../lng_lat_bounds';\nimport {getRollPitchBearing, type RollPitchBearing, rollPitchBearingToQuat, warnOnce} from '../../util/util';\nimport {quat} from 'gl-matrix';\nimport {interpolates} from '@maplibre/maplibre-gl-style-spec';\n\nexport type MapControlsDeltas = {\n panDelta: Point;\n zoomDelta: number;\n bearingDelta: number;\n pitchDelta: number;\n rollDelta: number;\n around: Point;\n}\n\nexport type CameraForBoxAndBearingHandlerResult = {\n center: LngLat;\n zoom: number;\n bearing: number;\n};\n\nexport type EaseToHandlerOptions = {\n bearing: number;\n pitch: number;\n roll: number;\n padding: PaddingOptions;\n offsetAsPoint: Point;\n around?: LngLat;\n aroundPoint?: Point;\n center?: LngLatLike;\n zoom?: number;\n offset?: PointLike;\n}\n\nexport type EaseToHandlerResult = {\n easeFunc: (k: number) => void;\n elevationCenter: LngLat;\n isZooming: boolean;\n}\n\nexport type FlyToHandlerOptions = {\n bearing: number;\n pitch: number;\n roll: number;\n padding: PaddingOptions;\n offsetAsPoint: Point;\n center?: LngLatLike;\n locationAtOffset: LngLat;\n zoom?: number;\n minZoom?: number;\n}\n\nexport type FlyToHandlerResult = {\n easeFunc: (k: number, scale: number, centerFactor: number, pointAtOffset: Point) => void;\n scaleOfZoom: number;\n scaleOfMinZoom?: number;\n targetCenter: LngLat;\n pixelPathLength: number;\n}\n\nexport type UpdateRotationArgs = {\n /**\n * The starting Euler angles.\n */\n startEulerAngles: RollPitchBearing;\n\n /**\n * The end Euler angles.\n */\n endEulerAngles: RollPitchBearing;\n\n /**\n * The transform to be updated\n */\n tr: ITransform;\n\n /**\n * The interpolation fraction, between 0 and 1.\n */\n k: number;\n\n /**\n * If true, use spherical linear interpolation. If false, use linear interpolation of Euler angles.\n */\n useSlerp: boolean;\n}\n\n/**\n * @internal\n */\nexport function cameraBoundsWarning() {\n warnOnce(\n 'Map cannot fit within canvas with the given bounds, padding, and/or offset.'\n );\n}\n\n/**\n * @internal\n * Contains projection-specific functions related to camera controls, easeTo, flyTo, inertia, etc.\n */\nexport interface ICameraHelper {\n get useGlobeControls(): boolean;\n\n handlePanInertia(pan: Point, transform: IReadonlyTransform): {\n easingCenter: LngLat;\n easingOffset: Point;\n };\n\n handleMapControlsRollPitchBearingZoom(deltas: MapControlsDeltas, tr: ITransform): void;\n\n handleMapControlsPan(deltas: MapControlsDeltas, tr: ITransform, preZoomAroundLoc: LngLat): void;\n\n cameraForBoxAndBearing(options: CameraForBoundsOptions, padding: PaddingOptions, bounds: LngLatBounds, bearing: number, tr: IReadonlyTransform): CameraForBoxAndBearingHandlerResult;\n\n handleJumpToCenterZoom(tr: ITransform, options: { zoom?: number; center?: LngLatLike }): void;\n\n handleEaseTo(tr: ITransform, options: EaseToHandlerOptions): EaseToHandlerResult;\n\n handleFlyTo(tr: ITransform, options: FlyToHandlerOptions): FlyToHandlerResult;\n}\n\n/**\n * @internal\n * Set a transform's rotation to a value interpolated between startEulerAngles and endEulerAngles\n */\nexport function updateRotation(args: UpdateRotationArgs) {\n if (args.useSlerp) {\n // At pitch ==0, the Euler angle representation is ambiguous. In this case, set the Euler angles\n // to the representation requested by the caller\n if (args.k < 1) {\n const startRotation = rollPitchBearingToQuat(args.startEulerAngles.roll, args.startEulerAngles.pitch, args.startEulerAngles.bearing);\n const endRotation = rollPitchBearingToQuat(args.endEulerAngles.roll, args.endEulerAngles.pitch, args.endEulerAngles.bearing);\n const rotation: quat = new Float64Array(4) as any;\n quat.slerp(rotation, startRotation, endRotation, args.k);\n const eulerAngles = getRollPitchBearing(rotation);\n args.tr.setRoll(eulerAngles.roll);\n args.tr.setPitch(eulerAngles.pitch);\n args.tr.setBearing(eulerAngles.bearing);\n } else {\n args.tr.setRoll(args.endEulerAngles.roll);\n args.tr.setPitch(args.endEulerAngles.pitch);\n args.tr.setBearing(args.endEulerAngles.bearing);\n }\n } else {\n args.tr.setRoll(interpolates.number(args.startEulerAngles.roll, args.endEulerAngles.roll, args.k));\n args.tr.setPitch(interpolates.number(args.startEulerAngles.pitch, args.endEulerAngles.pitch, args.k));\n args.tr.setBearing(interpolates.number(args.startEulerAngles.bearing, args.endEulerAngles.bearing, args.k));\n }\n}\n","import Point from '@mapbox/point-geometry';\nimport {LngLat, type LngLatLike} from '../lng_lat';\nimport {type IReadonlyTransform, type ITransform} from '../transform_interface';\nimport {cameraBoundsWarning, type CameraForBoxAndBearingHandlerResult, type EaseToHandlerResult, type EaseToHandlerOptions, type FlyToHandlerResult, type FlyToHandlerOptions, type ICameraHelper, type MapControlsDeltas, updateRotation, type UpdateRotationArgs} from './camera_helper';\nimport {type CameraForBoundsOptions} from '../../ui/camera';\nimport {type PaddingOptions} from '../edge_insets';\nimport {type LngLatBounds} from '../lng_lat_bounds';\nimport {normalizeCenter, scaleZoom, zoomScale} from '../transform_helper';\nimport {degreesToRadians, rollPitchBearingEqual} from '../../util/util';\nimport {projectToWorldCoordinates, unprojectFromWorldCoordinates} from './mercator_utils';\nimport {interpolates} from '@maplibre/maplibre-gl-style-spec';\n\n/**\n * @internal\n */\nexport class MercatorCameraHelper implements ICameraHelper {\n get useGlobeControls(): boolean { return false; }\n\n handlePanInertia(pan: Point, transform: IReadonlyTransform): {\n easingCenter: LngLat;\n easingOffset: Point;\n } {\n return {\n easingOffset: pan,\n easingCenter: transform.center,\n };\n }\n\n handleMapControlsRollPitchBearingZoom(deltas: MapControlsDeltas, tr: ITransform): void {\n if (deltas.bearingDelta) tr.setBearing(tr.bearing + deltas.bearingDelta);\n if (deltas.pitchDelta) tr.setPitch(tr.pitch + deltas.pitchDelta);\n if (deltas.rollDelta) tr.setRoll(tr.roll + deltas.rollDelta);\n if (deltas.zoomDelta) tr.setZoom(tr.zoom + deltas.zoomDelta);\n }\n\n handleMapControlsPan(deltas: MapControlsDeltas, tr: ITransform, preZoomAroundLoc: LngLat): void {\n // If we are rotating about the center point, there is no need to update the transform center. Doing so causes\n // a small amount of drift of the center point, especially when pitch is close to 90 degrees.\n // In this case, return early.\n if (deltas.around.distSqr(tr.centerPoint) < 1.0e-2) {\n return;\n }\n tr.setLocationAtPoint(preZoomAroundLoc, deltas.around);\n }\n\n cameraForBoxAndBearing(options: CameraForBoundsOptions, padding: PaddingOptions, bounds: LngLatBounds, bearing: number, tr: IReadonlyTransform): CameraForBoxAndBearingHandlerResult {\n const edgePadding = tr.padding;\n\n // Consider all corners of the rotated bounding box derived from the given points\n // when find the camera position that fits the given points.\n\n const nwWorld = projectToWorldCoordinates(tr.worldSize, bounds.getNorthWest());\n const neWorld = projectToWorldCoordinates(tr.worldSize, bounds.getNorthEast());\n const seWorld = projectToWorldCoordinates(tr.worldSize, bounds.getSouthEast());\n const swWorld = projectToWorldCoordinates(tr.worldSize, bounds.getSouthWest());\n\n const bearingRadians = degreesToRadians(-bearing);\n\n const nwRotatedWorld = nwWorld.rotate(bearingRadians);\n const neRotatedWorld = neWorld.rotate(bearingRadians);\n const seRotatedWorld = seWorld.rotate(bearingRadians);\n const swRotatedWorld = swWorld.rotate(bearingRadians);\n\n const upperRight = new Point(\n Math.max(nwRotatedWorld.x, neRotatedWorld.x, swRotatedWorld.x, seRotatedWorld.x),\n Math.max(nwRotatedWorld.y, neRotatedWorld.y, swRotatedWorld.y, seRotatedWorld.y)\n );\n\n const lowerLeft = new Point(\n Math.min(nwRotatedWorld.x, neRotatedWorld.x, swRotatedWorld.x, seRotatedWorld.x),\n Math.min(nwRotatedWorld.y, neRotatedWorld.y, swRotatedWorld.y, seRotatedWorld.y)\n );\n\n // Calculate zoom: consider the original bbox and padding.\n const size = upperRight.sub(lowerLeft);\n\n const availableWidth = (tr.width - (edgePadding.left + edgePadding.right + padding.left + padding.right));\n const availableHeight = (tr.height - (edgePadding.top + edgePadding.bottom + padding.top + padding.bottom));\n const scaleX = availableWidth / size.x;\n const scaleY = availableHeight / size.y;\n\n if (scaleY < 0 || scaleX < 0) {\n cameraBoundsWarning();\n return undefined;\n }\n\n const zoom = Math.min(scaleZoom(tr.scale * Math.min(scaleX, scaleY)), options.maxZoom);\n\n // Calculate center: apply the zoom, the configured offset, as well as offset that exists as a result of padding.\n const offset = Point.convert(options.offset);\n const paddingOffsetX = (padding.left - padding.right) / 2;\n const paddingOffsetY = (padding.top - padding.bottom) / 2;\n const paddingOffset = new Point(paddingOffsetX, paddingOffsetY);\n const rotatedPaddingOffset = paddingOffset.rotate(degreesToRadians(bearing));\n const offsetAtInitialZoom = offset.add(rotatedPaddingOffset);\n const offsetAtFinalZoom = offsetAtInitialZoom.mult(tr.scale / zoomScale(zoom));\n\n const center = unprojectFromWorldCoordinates(\n tr.worldSize,\n // either world diagonal can be used (NW-SE or NE-SW)\n nwWorld.add(seWorld).div(2).sub(offsetAtFinalZoom)\n );\n\n const result = {\n center,\n zoom,\n bearing\n };\n\n return result;\n }\n\n handleJumpToCenterZoom(tr: ITransform, options: { zoom?: number; center?: LngLatLike }): void {\n // Mercator zoom & center handling.\n const optionsZoom = typeof options.zoom !== 'undefined';\n\n const zoom = optionsZoom ? +options.zoom : tr.zoom;\n if (tr.zoom !== zoom) {\n tr.setZoom(+options.zoom);\n }\n\n if (options.center !== undefined) {\n tr.setCenter(LngLat.convert(options.center));\n }\n }\n\n handleEaseTo(tr: ITransform, options: EaseToHandlerOptions): EaseToHandlerResult {\n const startZoom = tr.zoom;\n const startPadding = tr.padding;\n const startEulerAngles = {roll: tr.roll, pitch: tr.pitch, bearing: tr.bearing};\n const endRoll = options.roll === undefined ? tr.roll : options.roll;\n const endPitch = options.pitch === undefined ? tr.pitch : options.pitch;\n const endBearing = options.bearing === undefined ? tr.bearing : options.bearing;\n const endEulerAngles = {roll: endRoll, pitch: endPitch, bearing: endBearing};\n\n const optionsZoom = typeof options.zoom !== 'undefined';\n\n const doPadding = !tr.isPaddingEqual(options.padding);\n\n let isZooming = false;\n\n const zoom = optionsZoom ? +options.zoom : tr.zoom;\n\n let pointAtOffset = tr.centerPoint.add(options.offsetAsPoint);\n const locationAtOffset = tr.screenPointToLocation(pointAtOffset);\n const {center, zoom: endZoom} = tr.getConstrained(\n LngLat.convert(options.center || locationAtOffset),\n zoom ?? startZoom\n );\n normalizeCenter(tr, center);\n\n const from = projectToWorldCoordinates(tr.worldSize, locationAtOffset);\n const delta = projectToWorldCoordinates(tr.worldSize, center).sub(from);\n\n const finalScale = zoomScale(endZoom - startZoom);\n isZooming = (endZoom !== startZoom);\n\n const easeFunc = (k: number) => {\n if (isZooming) {\n tr.setZoom(interpolates.number(startZoom, endZoom, k));\n }\n if (!rollPitchBearingEqual(startEulerAngles, endEulerAngles)) {\n updateRotation({\n startEulerAngles,\n endEulerAngles,\n tr,\n k,\n useSlerp: startEulerAngles.roll != endEulerAngles.roll} as UpdateRotationArgs);\n }\n if (doPadding) {\n tr.interpolatePadding(startPadding, options.padding, k);\n // When padding is being applied, Transform#centerPoint is changing continuously,\n // thus we need to recalculate offsetPoint every frame\n pointAtOffset = tr.centerPoint.add(options.offsetAsPoint);\n }\n\n if (options.around) {\n tr.setLocationAtPoint(options.around, options.aroundPoint);\n } else {\n const scale = zoomScale(tr.zoom - startZoom);\n const base = endZoom > startZoom ?\n Math.min(2, finalScale) :\n Math.max(0.5, finalScale);\n const speedup = Math.pow(base, 1 - k);\n const newCenter = unprojectFromWorldCoordinates(tr.worldSize, from.add(delta.mult(k * speedup)).mult(scale));\n tr.setLocationAtPoint(tr.renderWorldCopies ? newCenter.wrap() : newCenter, pointAtOffset);\n }\n };\n\n return {\n easeFunc,\n isZooming,\n elevationCenter: center,\n };\n }\n\n handleFlyTo(tr: ITransform, options: FlyToHandlerOptions): FlyToHandlerResult {\n const optionsZoom = typeof options.zoom !== 'undefined';\n\n const startZoom = tr.zoom;\n\n // Obtain target center and zoom\n const constrained = tr.getConstrained(\n LngLat.convert(options.center || options.locationAtOffset),\n optionsZoom ? +options.zoom : startZoom\n );\n const targetCenter = constrained.center;\n const targetZoom = constrained.zoom;\n\n normalizeCenter(tr, targetCenter);\n\n const from = projectToWorldCoordinates(tr.worldSize, options.locationAtOffset);\n const delta = projectToWorldCoordinates(tr.worldSize, targetCenter).sub(from);\n\n const pixelPathLength = delta.mag();\n\n const scaleOfZoom = zoomScale(targetZoom - startZoom);\n\n const optionsMinZoom = typeof options.minZoom !== 'undefined';\n\n let scaleOfMinZoom: number;\n\n if (optionsMinZoom) {\n const minZoomPreConstrain = Math.min(+options.minZoom, startZoom, targetZoom);\n const minZoom = tr.getConstrained(targetCenter, minZoomPreConstrain).zoom;\n scaleOfMinZoom = zoomScale(minZoom - startZoom);\n }\n\n const easeFunc = (k: number, scale: number, centerFactor: number, pointAtOffset: Point) => {\n tr.setZoom(k === 1 ? targetZoom : startZoom + scaleZoom(scale));\n const newCenter = k === 1 ? targetCenter : unprojectFromWorldCoordinates(tr.worldSize, from.add(delta.mult(centerFactor)).mult(scale));\n tr.setLocationAtPoint(tr.renderWorldCopies ? newCenter.wrap() : newCenter, pointAtOffset);\n };\n\n return {\n easeFunc,\n scaleOfZoom,\n targetCenter,\n scaleOfMinZoom,\n pixelPathLength,\n };\n }\n}\n","import {Color} from '@maplibre/maplibre-gl-style-spec';\n\nimport type {BlendFuncType, ColorMaskType} from './types';\n\nconst ZERO = 0x0000;\nconst ONE = 0x0001;\nconst ONE_MINUS_SRC_ALPHA = 0x0303;\n\nexport class ColorMode {\n blendFunction: BlendFuncType;\n blendColor: Color;\n mask: ColorMaskType;\n\n constructor(blendFunction: BlendFuncType, blendColor: Color, mask: ColorMaskType) {\n this.blendFunction = blendFunction;\n this.blendColor = blendColor;\n this.mask = mask;\n }\n\n static Replace: BlendFuncType;\n\n static disabled: Readonly;\n static unblended: Readonly;\n static alphaBlended: Readonly;\n}\n\nColorMode.Replace = [ONE, ZERO];\n\nColorMode.disabled = new ColorMode(ColorMode.Replace, Color.transparent, [false, false, false, false]);\nColorMode.unblended = new ColorMode(ColorMode.Replace, Color.transparent, [true, true, true, true]);\nColorMode.alphaBlended = new ColorMode([ONE, ONE_MINUS_SRC_ALPHA], Color.transparent, [true, true, true, true]);\n","import type {CullFaceModeType, FrontFaceType} from './types';\n\nconst FRONT = 0x0404;\nconst BACK = 0x0405;\nconst CCW = 0x0901;\n\nexport class CullFaceMode {\n enable: boolean;\n mode: CullFaceModeType;\n frontFace: FrontFaceType;\n\n constructor(enable: boolean, mode: CullFaceModeType, frontFace: FrontFaceType) {\n this.enable = enable;\n this.mode = mode;\n this.frontFace = frontFace;\n }\n\n static disabled: Readonly;\n\n /**\n * The standard GL cull mode. Culls backfacing triangles when counterclockwise vertex order is used.\n * Use for 3D geometry such as terrain.\n */\n static backCCW: Readonly;\n\n /**\n * Opposite of {@link backCCW}. Culls front-facing triangles when counterclockwise vertex order is used.\n */\n static frontCCW: Readonly;\n}\n\nCullFaceMode.disabled = new CullFaceMode(false, BACK, CCW);\nCullFaceMode.backCCW = new CullFaceMode(true, BACK, CCW);\nCullFaceMode.frontCCW = new CullFaceMode(true, FRONT, CCW);\n","import type {DepthFuncType, DepthMaskType, DepthRangeType} from './types';\n\nconst ALWAYS = 0x0207;\n\nexport class DepthMode {\n func: DepthFuncType;\n mask: DepthMaskType;\n range: DepthRangeType;\n\n // DepthMask enums\n static ReadOnly: boolean;\n static ReadWrite: boolean;\n\n constructor(depthFunc: DepthFuncType, depthMask: DepthMaskType, depthRange: DepthRangeType) {\n this.func = depthFunc;\n this.mask = depthMask;\n this.range = depthRange;\n }\n\n static disabled: Readonly;\n}\n\nDepthMode.ReadOnly = false;\nDepthMode.ReadWrite = true;\n\nDepthMode.disabled = new DepthMode(ALWAYS, DepthMode.ReadOnly, [0, 1]);\n","import type {StencilOpConstant, StencilTestGL} from './types';\n\nconst ALWAYS = 0x0207;\nconst KEEP = 0x1E00;\n\nexport class StencilMode {\n test: StencilTestGL;\n ref: number;\n mask: number;\n fail: StencilOpConstant;\n depthFail: StencilOpConstant;\n pass: StencilOpConstant;\n\n constructor(test: StencilTestGL, ref: number, mask: number, fail: StencilOpConstant,\n depthFail: StencilOpConstant, pass: StencilOpConstant) {\n this.test = test;\n this.ref = ref;\n this.mask = mask;\n this.fail = fail;\n this.depthFail = depthFail;\n this.pass = pass;\n }\n\n static disabled: Readonly;\n}\n\nStencilMode.disabled = new StencilMode({func: ALWAYS, mask: 0}, 0, 0, KEEP, KEEP, KEEP);\n","import {Uniform1f} from '../uniform_binding';\nimport type {Context} from '../../gl/context';\nimport type {UniformValues, UniformLocations} from '../../render/uniform_binding';\n\nexport type ProjectionErrorMeasurementUniformsType = {\n 'u_input': Uniform1f;\n 'u_output_expected': Uniform1f;\n};\n\nconst projectionErrorMeasurementUniforms = (context: Context, locations: UniformLocations): ProjectionErrorMeasurementUniformsType => ({\n 'u_input': new Uniform1f(context, locations.u_input),\n 'u_output_expected': new Uniform1f(context, locations.u_output_expected),\n});\n\nconst projectionErrorMeasurementUniformValues = (\n input: number,\n outputExpected: number\n): UniformValues => ({\n 'u_input': input,\n 'u_output_expected': outputExpected,\n});\n\nexport {projectionErrorMeasurementUniforms, projectionErrorMeasurementUniformValues};\n","const cache = new WeakMap();\nexport function isWebGL2(\n gl: WebGLRenderingContext | WebGL2RenderingContext\n): gl is WebGL2RenderingContext {\n if (cache.has(gl)) {\n return cache.get(gl);\n } else {\n const value = gl.getParameter(gl.VERSION)?.startsWith('WebGL 2.0');\n cache.set(gl, value);\n return value;\n }\n}\n","import {Color} from '@maplibre/maplibre-gl-style-spec';\nimport {ColorMode} from '../../gl/color_mode';\nimport {CullFaceMode} from '../../gl/cull_face_mode';\nimport {DepthMode} from '../../gl/depth_mode';\nimport {StencilMode} from '../../gl/stencil_mode';\nimport {warnOnce} from '../../util/util';\nimport {projectionErrorMeasurementUniformValues} from '../../render/program/projection_error_measurement_program';\nimport {Mesh} from '../../render/mesh';\nimport {SegmentVector} from '../../data/segment';\nimport {PosArray, TriangleIndexArray} from '../../data/array_types.g';\nimport posAttributes from '../../data/pos_attributes';\nimport {type Framebuffer} from '../../gl/framebuffer';\nimport {isWebGL2} from '../../gl/webgl2';\nimport {type ProjectionGPUContext} from './projection';\n\n/**\n * For vector globe the vertex shader projects mercator coordinates to angular coordinates on a sphere.\n * This projection requires some inverse trigonometry `atan(exp(...))`, which is inaccurate on some GPUs (mainly on AMD and Nvidia).\n * The inaccuracy is severe enough to require a workaround. The uncorrected map is shifted north-south by up to several hundred meters in some latitudes.\n * Since the inaccuracy is hardware-dependant and may change in the future, we need to measure the error at runtime.\n *\n * Our approach relies on several assumptions:\n *\n * - the error is only present in the \"latitude\" component (longitude doesn't need any inverse trigonometry)\n * - the error is continuous and changes slowly with latitude\n * - at zoom levels where the error is noticeable, the error is more-or-less the same across the entire visible map area (and thus can be described with a single number)\n *\n * Solution:\n *\n * Every few frames, launch a GPU shader that measures the error for the current map center latitude, and writes it to a 1x1 texture.\n * Read back that texture, and offset the globe projection matrix according to the error (interpolating smoothly from old error to new error if needed).\n * The texture readback is done asynchronously using Pixel Pack Buffers (WebGL2) when possible, and has a few frames of latency, but that should not be a problem.\n *\n * General operation of this class each frame is:\n *\n * - render the error shader into a fbo, read that pixel into a PBO, place a fence\n * - wait a few frames to allow the GPU (and driver) to actually execute the shader\n * - wait for the fence to be signalled (guaranteeing the shader to actually be executed)\n * - read back the PBO's contents\n * - wait a few more frames\n * - repeat\n */\nexport class ProjectionErrorMeasurement {\n // We wait at least this many frames after measuring until we read back the value.\n // After this period, we might wait more frames until a fence is signalled to make sure the rendering is completed.\n private readonly _readbackWaitFrames = 4;\n // We wait this many frames after *reading back* a measurement until we trigger measure again.\n // We could in theory render the measurement pixel immediately, but we wait to make sure\n // no pipeline stall happens.\n private readonly _measureWaitFrames = 6;\n private readonly _texWidth = 1;\n private readonly _texHeight = 1;\n private readonly _texFormat: number;\n private readonly _texType: number;\n\n private _fullscreenTriangle: Mesh;\n private _fbo: Framebuffer;\n private _resultBuffer: Uint8Array;\n private _pbo: WebGLBuffer;\n private _cachedRenderContext: ProjectionGPUContext;\n\n private _measuredError: number = 0; // Result of last measurement\n private _updateCount: number = 0;\n private _lastReadbackFrame: number = -1000;\n\n get awaitingQuery(): boolean {\n return !!this._readbackQueue;\n }\n\n // There is never more than one readback waiting\n private _readbackQueue: {\n frameNumberIssued: number; // Frame number when the data was first computed\n sync: WebGLSync;\n } = null;\n\n public constructor(renderContext: ProjectionGPUContext) {\n this._cachedRenderContext = renderContext;\n\n const context = renderContext.context;\n const gl = context.gl;\n\n this._texFormat = gl.RGBA;\n this._texType = gl.UNSIGNED_BYTE;\n\n const vertexArray = new PosArray();\n vertexArray.emplaceBack(-1, -1);\n vertexArray.emplaceBack(2, -1);\n vertexArray.emplaceBack(-1, 2);\n const indexArray = new TriangleIndexArray();\n indexArray.emplaceBack(0, 1, 2);\n\n this._fullscreenTriangle = new Mesh(\n context.createVertexBuffer(vertexArray, posAttributes.members),\n context.createIndexBuffer(indexArray),\n SegmentVector.simpleSegment(0, 0, vertexArray.length, indexArray.length)\n );\n\n this._resultBuffer = new Uint8Array(4);\n\n context.activeTexture.set(gl.TEXTURE1);\n\n const texture = gl.createTexture();\n gl.bindTexture(gl.TEXTURE_2D, texture);\n gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);\n gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);\n gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);\n gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);\n gl.texImage2D(gl.TEXTURE_2D, 0, this._texFormat, this._texWidth, this._texHeight, 0, this._texFormat, this._texType, null);\n\n this._fbo = context.createFramebuffer(this._texWidth, this._texHeight, false, false);\n this._fbo.colorAttachment.set(texture);\n\n if (isWebGL2(gl)) {\n this._pbo = gl.createBuffer();\n gl.bindBuffer(gl.PIXEL_PACK_BUFFER, this._pbo);\n gl.bufferData(gl.PIXEL_PACK_BUFFER, 4, gl.STREAM_READ);\n gl.bindBuffer(gl.PIXEL_PACK_BUFFER, null);\n }\n }\n\n public destroy() {\n const gl = this._cachedRenderContext.context.gl;\n this._fullscreenTriangle.destroy();\n this._fbo.destroy();\n gl.deleteBuffer(this._pbo);\n this._fullscreenTriangle = null;\n this._fbo = null;\n this._pbo = null;\n this._resultBuffer = null;\n }\n\n public updateErrorLoop(normalizedMercatorY: number, expectedAngleY: number): number {\n const currentFrame = this._updateCount;\n\n if (this._readbackQueue) {\n // Try to read back if enough frames elapsed. Otherwise do nothing, just wait another frame.\n if (currentFrame >= this._readbackQueue.frameNumberIssued + this._readbackWaitFrames) {\n // Try to read back - it is possible that this method does nothing, then\n // the readback queue will not be cleared and we will retry next frame.\n this._tryReadback();\n }\n } else {\n if (currentFrame >= this._lastReadbackFrame + this._measureWaitFrames) {\n this._renderErrorTexture(normalizedMercatorY, expectedAngleY);\n }\n }\n\n this._updateCount++;\n return this._measuredError;\n }\n\n private _bindFramebuffer() {\n const context = this._cachedRenderContext.context;\n const gl = context.gl;\n context.activeTexture.set(gl.TEXTURE1);\n gl.bindTexture(gl.TEXTURE_2D, this._fbo.colorAttachment.get());\n context.bindFramebuffer.set(this._fbo.framebuffer);\n }\n\n private _renderErrorTexture(input: number, outputExpected: number): void {\n const context = this._cachedRenderContext.context;\n const gl = context.gl;\n\n // Update framebuffer contents\n this._bindFramebuffer();\n context.viewport.set([0, 0, this._texWidth, this._texHeight]);\n context.clear({color: Color.transparent});\n\n const program = this._cachedRenderContext.useProgram('projectionErrorMeasurement');\n\n program.draw(context, gl.TRIANGLES,\n DepthMode.disabled, StencilMode.disabled,\n ColorMode.unblended, CullFaceMode.disabled,\n projectionErrorMeasurementUniformValues(input, outputExpected), null, null,\n '$clipping', this._fullscreenTriangle.vertexBuffer, this._fullscreenTriangle.indexBuffer,\n this._fullscreenTriangle.segments);\n\n if (this._pbo && isWebGL2(gl)) {\n // Read back into PBO\n gl.bindBuffer(gl.PIXEL_PACK_BUFFER, this._pbo);\n gl.readBuffer(gl.COLOR_ATTACHMENT0);\n gl.readPixels(0, 0, this._texWidth, this._texHeight, this._texFormat, this._texType, 0);\n gl.bindBuffer(gl.PIXEL_PACK_BUFFER, null);\n const sync = gl.fenceSync(gl.SYNC_GPU_COMMANDS_COMPLETE, 0);\n gl.flush();\n\n this._readbackQueue = {\n frameNumberIssued: this._updateCount,\n sync,\n };\n } else {\n // Read it back later.\n this._readbackQueue = {\n frameNumberIssued: this._updateCount,\n sync: null,\n };\n }\n }\n\n private _tryReadback(): void {\n const gl = this._cachedRenderContext.context.gl;\n\n if (this._pbo && this._readbackQueue && isWebGL2(gl)) {\n // WebGL 2 path\n const waitResult = gl.clientWaitSync(this._readbackQueue.sync, 0, 0);\n\n if (waitResult === gl.WAIT_FAILED) {\n warnOnce('WebGL2 clientWaitSync failed.');\n this._readbackQueue = null;\n this._lastReadbackFrame = this._updateCount;\n return;\n }\n\n if (waitResult === gl.TIMEOUT_EXPIRED) {\n return; // Wait one more frame\n }\n\n gl.bindBuffer(gl.PIXEL_PACK_BUFFER, this._pbo);\n gl.getBufferSubData(gl.PIXEL_PACK_BUFFER, 0, this._resultBuffer, 0, 4);\n gl.bindBuffer(gl.PIXEL_PACK_BUFFER, null);\n } else {\n // WebGL1 compatible\n this._bindFramebuffer();\n gl.readPixels(0, 0, this._texWidth, this._texHeight, this._texFormat, this._texType, this._resultBuffer);\n }\n\n // If we made it here, _resultBuffer contains the new measurement\n this._readbackQueue = null;\n this._measuredError = ProjectionErrorMeasurement._parseRGBA8float(this._resultBuffer);\n this._lastReadbackFrame = this._updateCount;\n }\n\n private static _parseRGBA8float(buffer: Uint8Array): number {\n let result = 0;\n result += buffer[0] / 256.0;\n result += buffer[1] / 65536.0;\n result += buffer[2] / 16777216.0;\n if (buffer[3] < 127.0) {\n result = -result;\n }\n return result / 128.0;\n }\n}\n","import {type Context} from '../gl/context';\nimport {Mesh} from '../render/mesh';\nimport {PosArray, TriangleIndexArray} from '../data/array_types.g';\nimport {SegmentVector} from '../data/segment';\nimport {NORTH_POLE_Y, SOUTH_POLE_Y} from '../render/subdivision';\nimport {EXTENT} from '../data/extent';\nimport posAttributes from '../data/pos_attributes';\n\n/**\n * The size of border region for stencil masks, in internal tile coordinates.\n * Used for globe rendering.\n */\nconst EXTENT_STENCIL_BORDER = EXTENT / 128;\n\n/**\n * Options for generating a tile mesh.\n * Can optionally configure any of the following:\n * - mesh subdivision granularity\n * - border presence\n * - special geometry for the north and/or south pole\n */\nexport type CreateTileMeshOptions = {\n /**\n * Specifies how much should the tile mesh be subdivided.\n * A value of 1 leads to a simple quad, a value of 4 will result in a grid of 4x4 quads.\n */\n granularity?: number;\n /**\n * When true, an additional ring of quads is generated along the border, always extending `EXTENT_STENCIL_BORDER` units away from the main mesh.\n */\n generateBorders?: boolean;\n /**\n * When true, additional geometry is generated along the north edge of the mesh, connecting it to the pole special vertex position.\n * This geometry replaces the mesh border along this edge, if one is present.\n */\n extendToNorthPole?: boolean;\n /**\n * When true, additional geometry is generated along the south edge of the mesh, connecting it to the pole special vertex position.\n * This geometry replaces the mesh border along this edge, if one is present.\n */\n extendToSouthPole?: boolean;\n};\n\n/**\n * Stores the prepared vertex and index buffer bytes for a mesh.\n */\nexport type TileMesh = {\n /**\n * The vertex data. Each vertex is two 16 bit signed integers, one for X, one for Y.\n */\n vertices: Int16Array;\n /**\n * The index data. Each triangle is defined by three indices. The indices may either be 16 bit or 32 bit unsigned integers,\n * depending on the mesh creation arguments and on whether the mesh can fit into 16 bit indices.\n */\n indices: T;\n /**\n * A helper boolean indicating whether the indices are 32 bit.\n */\n uses32bitIndices: T extends Uint32Array ? true : false;\n};\n\n/**\n * Describes desired type of vertex indices, either 16 bit uint, 32 bit uint, or, if undefined, any of the two options.\n */\nexport type IndicesType = '32bit' | '16bit' | undefined;\n\n/**\n * @internal\n * Creates a mesh of a quad that covers the entire tile (covering positions in range 0..EXTENT),\n * is optionally subdivided into finer quads, optionally includes a border\n * and optionally extends to the north and/or special pole vertices.\n * Also allocates and populates WebGL buffers for the mesh.\n * Forces 16 bit indices that are used throughout MapLibre.\n * @param context - The WebGL context wrapper.\n * @param options - Specify options for tile mesh creation such as granularity or border.\n * @returns The mesh vertices and indices, already allocated and uploaded into WebGL buffers.\n */\nexport function createTileMeshWithBuffers(context: Context, options: CreateTileMeshOptions): Mesh {\n const tileMesh = createTileMesh(options, '16bit');\n const vertices = PosArray.deserialize({\n arrayBuffer: tileMesh.vertices,\n length: tileMesh.vertices.length / 2, // Two values per vertex\n });\n const indices = TriangleIndexArray.deserialize({\n arrayBuffer: tileMesh.indices,\n length: tileMesh.indices.length / 3, // Three values per triangle\n });\n const mesh = new Mesh(\n context.createVertexBuffer(vertices, posAttributes.members),\n context.createIndexBuffer(indices),\n SegmentVector.simpleSegment(0, 0, vertices.length, indices.length)\n );\n\n return mesh;\n}\n\n/**\n * Creates a mesh of a quad that covers the entire tile (covering positions in range 0..EXTENT),\n * is optionally subdivided into finer quads, optionally includes a border\n * and optionally extends to the north and/or special pole vertices.\n * Additionally the resulting mesh indices type can be specified using `forceIndicesSize`.\n * @example\n * ```\n * // Creating a mesh for a tile that can be used for raster layers, hillshade, etc.\n * const meshBuffers = createTileMesh({\n * granularity: map.style.projection.subdivisionGranularity.tile.getGranularityForZoomLevel(tileID.z),\n * generateBorders: true,\n * extendToNorthPole: tileID.y === 0,\n * extendToSouthPole: tileID.y === (1 << tileID.z) - 1,\n * }, '16bit');\n * ```\n * @param options - Specify options for tile mesh creation such as granularity or border.\n * @param forceIndicesSize - Specifies what indices type to use. The values '32bit' and '16bit' force their respective indices size. If undefined, the mesh may use either size, and will pick 16 bit indices if possible. If '16bit' is specified and the mesh exceeds 65536 vertices, an exception is thrown.\n * @returns Typed arrays of the mesh vertices and indices.\n */\nexport function createTileMesh(options: CreateTileMeshOptions, forceIndicesSize?: T): T extends '32bit' ? TileMesh : (T extends '16bit' ? TileMesh : TileMesh) {\n // We only want to generate the north/south border if the tile\n // does NOT border the north/south edge of the mercator range.\n const granularity = options.granularity !== undefined ? Math.max(options.granularity, 1) : 1;\n\n const quadsPerAxisX = granularity + (options.generateBorders ? 2 : 0); // two extra quads for border\n const quadsPerAxisY = granularity + ((options.extendToNorthPole || options.generateBorders) ? 1 : 0) + (options.extendToSouthPole || options.generateBorders ? 1 : 0);\n const verticesPerAxisX = quadsPerAxisX + 1; // one more vertex than quads\n const verticesPerAxisY = quadsPerAxisY + 1; // one more vertex than quads\n const offsetX = options.generateBorders ? -1 : 0;\n const offsetY = (options.generateBorders || options.extendToNorthPole) ? -1 : 0;\n const endX = granularity + (options.generateBorders ? 1 : 0);\n const endY = granularity + ((options.generateBorders || options.extendToSouthPole) ? 1 : 0);\n\n const vertexCount = verticesPerAxisX * verticesPerAxisY;\n const indexCount = quadsPerAxisX * quadsPerAxisY * 6;\n\n const overflows16bitIndices = verticesPerAxisX * verticesPerAxisY > (1 << 16);\n\n if (overflows16bitIndices && forceIndicesSize === '16bit') {\n throw new Error('Granularity is too large and meshes would not fit inside 16 bit vertex indices.');\n }\n\n const use32bitIndices = overflows16bitIndices || forceIndicesSize === '32bit';\n\n const vertexArray = new Int16Array(vertexCount * 2);\n\n let resultMesh;\n\n if (use32bitIndices) {\n const mesh: TileMesh = {\n vertices: vertexArray,\n indices: new Uint32Array(indexCount),\n uses32bitIndices: true,\n };\n resultMesh = mesh;\n } else {\n const mesh: TileMesh = {\n vertices: vertexArray,\n indices: new Uint16Array(indexCount),\n uses32bitIndices: false,\n };\n resultMesh = mesh;\n }\n\n const indexArray = resultMesh.indices;\n\n let vertexId = 0;\n\n for (let y = offsetY; y <= endY; y++) {\n for (let x = offsetX; x <= endX; x++) {\n let vx = x / granularity * EXTENT;\n if (x === -1) {\n vx = -EXTENT_STENCIL_BORDER;\n }\n if (x === granularity + 1) {\n vx = EXTENT + EXTENT_STENCIL_BORDER;\n }\n let vy = y / granularity * EXTENT;\n if (y === -1) {\n vy = options.extendToNorthPole ? NORTH_POLE_Y : (-EXTENT_STENCIL_BORDER);\n }\n if (y === granularity + 1) {\n vy = options.extendToSouthPole ? SOUTH_POLE_Y : EXTENT + EXTENT_STENCIL_BORDER;\n }\n\n vertexArray[vertexId++] = vx;\n vertexArray[vertexId++] = vy;\n }\n }\n\n let indexId = 0;\n\n for (let y = 0; y < quadsPerAxisY; y++) {\n for (let x = 0; x < quadsPerAxisX; x++) {\n const v0 = x + y * verticesPerAxisX;\n const v1 = (x + 1) + y * verticesPerAxisX;\n const v2 = x + (y + 1) * verticesPerAxisX;\n const v3 = (x + 1) + (y + 1) * verticesPerAxisX;\n\n // v0----v1\n // | / |\n // | / |\n // v2----v3\n indexArray[indexId++] = v0;\n indexArray[indexId++] = v2;\n indexArray[indexId++] = v1;\n\n indexArray[indexId++] = v1;\n indexArray[indexId++] = v2;\n indexArray[indexId++] = v3;\n }\n }\n\n return resultMesh;\n}\n","import type {Context} from '../../gl/context';\nimport type {CanonicalTileID} from '../../source/tile_id';\nimport {type Mesh} from '../../render/mesh';\nimport {browser} from '../../util/browser';\nimport {easeCubicInOut, lerp} from '../../util/util';\nimport {mercatorYfromLat} from '../mercator_coordinate';\nimport {SubdivisionGranularityExpression, SubdivisionGranularitySetting} from '../../render/subdivision_granularity_settings';\nimport type {Projection, ProjectionGPUContext, TileMeshUsage} from './projection';\nimport {type PreparedShader, shaders} from '../../shaders/shaders';\nimport {MercatorProjection} from './mercator';\nimport {ProjectionErrorMeasurement} from './globe_projection_error_measurement';\nimport {createTileMeshWithBuffers, type CreateTileMeshOptions} from '../../util/create_tile_mesh';\n\nexport const globeConstants = {\n globeTransitionTimeSeconds: 0.5,\n maxGlobeZoom: 12.0,\n errorTransitionTimeSeconds: 0.5\n};\n\nconst granularitySettingsGlobe: SubdivisionGranularitySetting = new SubdivisionGranularitySetting({\n fill: new SubdivisionGranularityExpression(128, 2),\n line: new SubdivisionGranularityExpression(512, 0),\n // Always keep at least some subdivision on raster tiles, etc,\n // otherwise they will be visibly warped at high zooms (before mercator transition).\n // This si not needed on fill, because fill geometry tends to already be\n // highly tessellated and granular at high zooms.\n tile: new SubdivisionGranularityExpression(128, 32),\n // Stencil granularity must never be higher than fill granularity,\n // otherwise we would get seams in the oceans at zoom levels where\n // stencil has higher granularity than fill.\n stencil: new SubdivisionGranularityExpression(128, 1),\n circle: 3\n});\n\nexport class GlobeProjection implements Projection {\n private _mercator: MercatorProjection;\n\n private _tileMeshCache: {[_: string]: Mesh} = {};\n\n /**\n * Stores whether globe rendering should be used.\n * The value is injected from GlobeTransform.\n */\n private _useGlobeRendering: boolean = true;\n\n // GPU atan() error correction\n private _errorMeasurement: ProjectionErrorMeasurement;\n private _errorQueryLatitudeDegrees: number;\n private _errorCorrectionUsable: number = 0.0;\n private _errorMeasurementLastValue: number = 0.0;\n private _errorCorrectionPreviousValue: number = 0.0;\n private _errorMeasurementLastChangeTime: number = -1000.0;\n\n get name(): 'globe' {\n return 'globe';\n }\n\n /**\n * This property is true when globe rendering and globe shader variants should be in use.\n * This is false when globe is disabled, or when globe is enabled, but mercator rendering is used due to zoom level (and no transition is happening).\n */\n get useGlobeRendering(): boolean {\n return this._useGlobeRendering;\n }\n\n /**\n * @internal\n * Intended for internal use, only called from GlobeTransform.\n */\n set useGlobeRendering(value: boolean) {\n this._useGlobeRendering = value;\n }\n\n get useSubdivision(): boolean {\n return this.useGlobeRendering;\n }\n\n get shaderVariantName(): string {\n return this.useGlobeRendering ? 'globe' : this._mercator.shaderVariantName;\n }\n\n get shaderDefine(): string {\n return this.useGlobeRendering ? '#define GLOBE' : this._mercator.shaderDefine;\n }\n\n get shaderPreludeCode(): PreparedShader {\n return this.useGlobeRendering ? shaders.projectionGlobe : this._mercator.shaderPreludeCode;\n }\n\n get vertexShaderPreludeCode(): string {\n return shaders.projectionMercator.vertexSource;\n }\n\n get subdivisionGranularity(): SubdivisionGranularitySetting {\n return granularitySettingsGlobe;\n }\n\n get useGlobeControls(): boolean {\n return this._useGlobeRendering;\n }\n\n get errorQueryLatitudeDegrees(): number { return this._errorQueryLatitudeDegrees; }\n\n /**\n * @internal\n * Intended for internal use, only called from GlobeTransform.\n */\n set errorQueryLatitudeDegrees(value: number) {\n this._errorQueryLatitudeDegrees = value;\n }\n\n /**\n * @internal\n * Globe projection periodically measures the error of the GPU's\n * projection from mercator to globe and computes how much to correct\n * the globe's latitude alignment.\n * This stores the correction that should be applied to the projection matrix.\n */\n get latitudeErrorCorrectionRadians(): number { return this._errorCorrectionUsable; }\n\n constructor() {\n this._mercator = new MercatorProjection();\n }\n\n public destroy() {\n if (this._errorMeasurement) {\n this._errorMeasurement.destroy();\n }\n }\n\n public isRenderingDirty(): boolean {\n const now = browser.now();\n let dirty = false;\n // Error correction transition\n dirty = dirty || (now - this._errorMeasurementLastChangeTime) / 1000.0 < (globeConstants.errorTransitionTimeSeconds + 0.2);\n // Error correction query in flight\n dirty = dirty || (this._errorMeasurement && this._errorMeasurement.awaitingQuery);\n return dirty;\n }\n\n public updateGPUdependent(renderContext: ProjectionGPUContext): void {\n this._mercator.updateGPUdependent(renderContext);\n if (!this._errorMeasurement) {\n this._errorMeasurement = new ProjectionErrorMeasurement(renderContext);\n }\n const mercatorY = mercatorYfromLat(this._errorQueryLatitudeDegrees);\n const expectedResult = 2.0 * Math.atan(Math.exp(Math.PI - (mercatorY * Math.PI * 2.0))) - Math.PI * 0.5;\n const newValue = this._errorMeasurement.updateErrorLoop(mercatorY, expectedResult);\n\n const now = browser.now();\n\n if (newValue !== this._errorMeasurementLastValue) {\n this._errorCorrectionPreviousValue = this._errorCorrectionUsable; // store the interpolated value\n this._errorMeasurementLastValue = newValue;\n this._errorMeasurementLastChangeTime = now;\n }\n\n const sinceUpdateSeconds = (now - this._errorMeasurementLastChangeTime) / 1000.0;\n const mix = Math.min(Math.max(sinceUpdateSeconds / globeConstants.errorTransitionTimeSeconds, 0.0), 1.0);\n const newCorrection = -this._errorMeasurementLastValue; // Note the negation\n this._errorCorrectionUsable = lerp(this._errorCorrectionPreviousValue, newCorrection, easeCubicInOut(mix));\n }\n\n private _getMeshKey(options: CreateTileMeshOptions): string {\n return `${options.granularity.toString(36)}_${options.generateBorders ? 'b' : ''}${options.extendToNorthPole ? 'n' : ''}${options.extendToSouthPole ? 's' : ''}`;\n }\n\n public getMeshFromTileID(context: Context, canonical: CanonicalTileID, hasBorder: boolean, allowPoles: boolean, usage: TileMeshUsage): Mesh {\n // Stencil granularity must match fill granularity\n const granularityConfig = usage === 'stencil' ? granularitySettingsGlobe.stencil : granularitySettingsGlobe.tile;\n const granularity = granularityConfig.getGranularityForZoomLevel(canonical.z);\n const north = (canonical.y === 0) && allowPoles;\n const south = (canonical.y === (1 << canonical.z) - 1) && allowPoles;\n return this._getMesh(context, {\n granularity,\n generateBorders: hasBorder,\n extendToNorthPole: north,\n extendToSouthPole: south,\n });\n }\n\n private _getMesh(context: Context, options: CreateTileMeshOptions): Mesh {\n const key = this._getMeshKey(options);\n\n if (key in this._tileMeshCache) {\n return this._tileMeshCache[key];\n }\n\n const mesh = createTileMeshWithBuffers(context, options);\n this._tileMeshCache[key] = mesh;\n return mesh;\n }\n}\n","import {vec3} from 'gl-matrix';\nimport {clamp, lerp, mod, remapSaturate, wrap} from '../../util/util';\nimport {LngLat} from '../lng_lat';\nimport {MAX_VALID_LATITUDE, scaleZoom} from '../transform_helper';\nimport type Point from '@mapbox/point-geometry';\nimport {EXTENT} from '../../data/extent';\n\nexport function getGlobeCircumferencePixels(transform: {worldSize: number; center: {lat: number}}): number {\n const radius = getGlobeRadiusPixels(transform.worldSize, transform.center.lat);\n const circumference = 2.0 * Math.PI * radius;\n return circumference;\n}\n\nexport function globeDistanceOfLocationsPixels(transform: {worldSize: number; center: {lat: number}}, a: LngLat, b: LngLat): number {\n const vecA = angularCoordinatesToSurfaceVector(a);\n const vecB = angularCoordinatesToSurfaceVector(b);\n const dot = vec3.dot(vecA, vecB);\n const radians = Math.acos(dot);\n const circumference = getGlobeCircumferencePixels(transform);\n return radians / (2.0 * Math.PI) * circumference;\n}\n\n/**\n * For given mercator coordinates in range 0..1, returns the angular coordinates on the sphere's surface, in radians.\n */\nexport function mercatorCoordinatesToAngularCoordinatesRadians(mercatorX: number, mercatorY: number): [number, number] {\n const sphericalX = mod(mercatorX * Math.PI * 2.0 + Math.PI, Math.PI * 2);\n const sphericalY = 2.0 * Math.atan(Math.exp(Math.PI - (mercatorY * Math.PI * 2.0))) - Math.PI * 0.5;\n return [sphericalX, sphericalY];\n}\n\n/**\n * For a given longitude and latitude (note: in radians) returns the normalized vector from the planet center to the specified place on the surface.\n * @param lngRadians - Longitude in radians.\n * @param latRadians - Latitude in radians.\n */\nexport function angularCoordinatesRadiansToVector(lngRadians: number, latRadians: number): vec3 {\n const len = Math.cos(latRadians);\n const vec = new Float64Array(3) as any;\n vec[0] = Math.sin(lngRadians) * len;\n vec[1] = Math.sin(latRadians);\n vec[2] = Math.cos(lngRadians) * len;\n return vec;\n}\n\n/**\n * Projects a point within a tile to the surface of the unit sphere globe.\n * @param inTileX - X coordinate inside the tile in range [0 .. 8192].\n * @param inTileY - Y coordinate inside the tile in range [0 .. 8192].\n * @param tileIdX - Tile's X coordinate in range [0 .. 2^zoom - 1].\n * @param tileIdY - Tile's Y coordinate in range [0 .. 2^zoom - 1].\n * @param tileIdZ - Tile's zoom.\n * @returns A 3D vector - coordinates of the projected point on a unit sphere.\n */\nexport function projectTileCoordinatesToSphere(inTileX: number, inTileY: number, tileIdX: number, tileIdY: number, tileIdZ: number): vec3 {\n // This code could be assembled from 3 fuctions, but this is a hot path for symbol placement,\n // so for optimization purposes everything is inlined by hand.\n //\n // Non-inlined variant of this function would be this:\n // const mercator = tileCoordinatesToMercatorCoordinates(inTileX, inTileY, tileID);\n // const angular = mercatorCoordinatesToAngularCoordinatesRadians(mercator.x, mercator.y);\n // const sphere = angularCoordinatesRadiansToVector(angular[0], angular[1]);\n // return sphere;\n const scale = 1.0 / (1 << tileIdZ);\n const mercatorX = inTileX / EXTENT * scale + tileIdX * scale;\n const mercatorY = inTileY / EXTENT * scale + tileIdY * scale;\n const sphericalX = mod(mercatorX * Math.PI * 2.0 + Math.PI, Math.PI * 2);\n const sphericalY = 2.0 * Math.atan(Math.exp(Math.PI - (mercatorY * Math.PI * 2.0))) - Math.PI * 0.5;\n const len = Math.cos(sphericalY);\n const vec = new Float64Array(3) as any;\n vec[0] = Math.sin(sphericalX) * len;\n vec[1] = Math.sin(sphericalY);\n vec[2] = Math.cos(sphericalX) * len;\n return vec;\n}\n\n/**\n * For a given longitude and latitude (note: in degrees) returns the normalized vector from the planet center to the specified place on the surface.\n */\nexport function angularCoordinatesToSurfaceVector(lngLat: LngLat): vec3 {\n return angularCoordinatesRadiansToVector(lngLat.lng * Math.PI / 180, lngLat.lat * Math.PI / 180);\n}\n\nexport function getGlobeRadiusPixels(worldSize: number, latitudeDegrees: number) {\n // We want zoom levels to be consistent between globe and flat views.\n // This means that the pixel size of features at the map center point\n // should be the same for both globe and flat view.\n // For this reason we scale the globe up when map center is nearer to the poles.\n return worldSize / (2.0 * Math.PI) / Math.cos(latitudeDegrees * Math.PI / 180);\n}\n\n/**\n * Given a 3D point on the surface of a unit sphere, returns its angular coordinates in degrees.\n * The input vector must be normalized.\n */\nexport function sphereSurfacePointToCoordinates(surface: vec3): LngLat {\n const latRadians = Math.asin(surface[1]);\n const latDegrees = latRadians / Math.PI * 180.0;\n const lengthXZ = Math.sqrt(surface[0] * surface[0] + surface[2] * surface[2]);\n if (lengthXZ > 1e-6) {\n const projX = surface[0] / lengthXZ;\n const projZ = surface[2] / lengthXZ;\n const acosZ = Math.acos(projZ);\n const lngRadians = (projX > 0) ? acosZ : -acosZ;\n const lngDegrees = lngRadians / Math.PI * 180.0;\n return new LngLat(wrap(lngDegrees, -180, 180), latDegrees);\n } else {\n return new LngLat(0.0, latDegrees);\n }\n}\n\nfunction planetScaleAtLatitude(latitudeDegrees: number): number {\n return Math.cos(latitudeDegrees * Math.PI / 180);\n}\n\n/**\n * Computes how much to modify zoom to keep the globe size constant when changing latitude.\n * @param transform - An instance of any transform. Does not have any relation on the computed values.\n * @param oldLat - Latitude before change, in degrees.\n * @param newLat - Latitude after change, in degrees.\n * @returns A value to add to zoom level used for old latitude to keep same planet radius at new latitude.\n */\nexport function getZoomAdjustment(oldLat: number, newLat: number): number {\n const oldCircumference = planetScaleAtLatitude(oldLat);\n const newCircumference = planetScaleAtLatitude(newLat);\n return scaleZoom(newCircumference / oldCircumference);\n}\n\nexport function getDegreesPerPixel(worldSize: number, lat: number): number {\n return 360.0 / getGlobeCircumferencePixels({worldSize, center: {lat}});\n}\n\n/**\n * Returns transform's new center rotation after applying panning.\n * @param panDelta - Panning delta, in same units as what is supplied to {@link HandlerManager}.\n * @param tr - Current transform. This object is not modified by the function.\n * @returns New center location to set to the map's transform to apply the specified panning.\n */\nexport function computeGlobePanCenter(panDelta: Point, tr: {\n readonly bearingInRadians: number;\n readonly worldSize: number;\n readonly center: LngLat;\n readonly zoom: number;\n}): LngLat {\n // Apply map bearing to the panning vector\n const rotatedPanDelta = panDelta.rotate(tr.bearingInRadians);\n // Compute what the current zoom would be if the transform center would be moved to latitude 0.\n const normalizedGlobeZoom = tr.zoom + getZoomAdjustment(tr.center.lat, 0);\n // Note: we divide longitude speed by planet width at the given latitude. But we diminish this effect when the globe is zoomed out a lot.\n const lngSpeed = lerp(\n 1.0 / planetScaleAtLatitude(tr.center.lat), // speed adjusted by latitude\n 1.0 / planetScaleAtLatitude(Math.min(Math.abs(tr.center.lat), 60)), // also adjusted, but latitude is clamped to 60° to avoid too large speeds near poles\n remapSaturate(normalizedGlobeZoom, 7, 3, 0, 1.0) // Values chosen so that globe interactions feel good. Not scientific by any means.\n );\n const panningDegreesPerPixel = getDegreesPerPixel(tr.worldSize, tr.center.lat);\n return new LngLat(\n tr.center.lng - rotatedPanDelta.x * panningDegreesPerPixel * lngSpeed,\n clamp(tr.center.lat + rotatedPanDelta.y * panningDegreesPerPixel, -MAX_VALID_LATITUDE, MAX_VALID_LATITUDE)\n );\n}\n\n/**\n * Integration of `1 / cos(x)`.\n */\nfunction integrateSecX(x: number): number {\n const xHalf = 0.5 * x;\n const sin = Math.sin(xHalf);\n const cos = Math.cos(xHalf);\n return Math.log(sin + cos) - Math.log(cos - sin);\n}\n\n/**\n * Interpolates globe center between two locations while preserving apparent rotation speed during interpolation.\n * @param start - The starting location of the interpolation.\n * @param deltaLng - Longitude delta to the end of the interpolation.\n * @param deltaLat - Latitude delta to the end of the interpolation.\n * @param t - The interpolation point in [0..1], where 0 is starting location, 1 is end location and other values are in between.\n * @returns The interpolated location.\n */\nexport function interpolateLngLatForGlobe(start: LngLat, deltaLng: number, deltaLat: number, t: number): LngLat {\n // Rate of change of longitude when moving the globe should be roughly 1/cos(latitude)\n // We want to use this rate of change, even for interpolation during easing.\n // Thus we know the derivative of our interpolation function: 1/cos(x)\n // To get our interpolation function, we need to integrate that.\n\n const interpolatedLat = start.lat + deltaLat * t;\n\n if (Math.abs(deltaLat) > 1) {\n const endLat = start.lat + deltaLat;\n const onDifferentHemispheres = Math.sign(endLat) !== Math.sign(start.lat);\n // Where do we sample the integrated speed curve?\n const samplePointStart = (onDifferentHemispheres ? -Math.abs(start.lat) : Math.abs(start.lat)) * Math.PI / 180;\n const samplePointEnd = Math.abs(start.lat + deltaLat) * Math.PI / 180;\n // Read the integrated speed curve at those points, and at the interpolation value \"t\".\n const valueT = integrateSecX(samplePointStart + t * (samplePointEnd - samplePointStart));\n const valueStart = integrateSecX(samplePointStart);\n const valueEnd = integrateSecX(samplePointEnd);\n // Compute new interpolation factor based on the speed curve\n const newT = (valueT - valueStart) / (valueEnd - valueStart);\n // Interpolate using that factor\n const interpolatedLng = start.lng + deltaLng * newT;\n return new LngLat(\n interpolatedLng,\n interpolatedLat\n );\n } else {\n // Fall back to simple interpolation when latitude doesn't change much.\n const interpolatedLng = start.lng + deltaLng * t;\n return new LngLat(\n interpolatedLng,\n interpolatedLat\n );\n }\n}\n","import {type CoveringTilesOptions} from '../../geo/projection/covering_tiles';\nimport {type Aabb} from './aabb';\n\ntype AabbFactory = (tileID: {x: number; y: number; z: number}, wrap: number, elevation: number, options: CoveringTilesOptions) => Aabb;\n\nexport class AabbCache {\n private _cachePrevious: Map = new Map();\n private _cache: Map = new Map();\n private _hadAnyChanges = false;\n private _aabbFactory: AabbFactory;\n\n constructor(aabbFactory: AabbFactory) {\n this._aabbFactory = aabbFactory;\n }\n\n /**\n * Prepares AABB cache for next frame. Call at the beginning of a frame.\n * Any tile accesses in the last frame is kept in the cache, other tiles are deleted.\n * @returns \n */\n newFrame() {\n if (!this._hadAnyChanges) {\n // If no new boxes were added this frame, no need to conserve memory, do not clear caches.\n return;\n }\n const oldCache = this._cachePrevious;\n this._cachePrevious = this._cache;\n this._cache = oldCache;\n this._cache.clear();\n this._hadAnyChanges = false;\n }\n\n /**\n * Returns the AABB of the specified tile, fetching it from cache or creating it using the factory function if needed.\n * @param tileID - Tile x, y and z for zoom.\n */\n getTileAABB(tileID: {x: number; y: number; z: number}, wrap: number, elevation: number, options: CoveringTilesOptions): Aabb {\n const key = `${tileID.z}_${tileID.x}_${tileID.y}`;\n const cached = this._cache.get(key);\n if (cached) {\n return cached;\n }\n const cachedPrevious = this._cachePrevious.get(key);\n if (cachedPrevious) {\n this._cache.set(key, cachedPrevious);\n return cachedPrevious;\n }\n const aabb = this._aabbFactory(tileID, wrap, elevation, options);\n this._cache.set(key, aabb);\n this._hadAnyChanges = true;\n return aabb;\n }\n}\n","import {type vec3} from 'gl-matrix';\nimport {type IReadonlyTransform} from '../transform_interface';\nimport {type MercatorCoordinate} from '../mercator_coordinate';\nimport {EXTENT} from '../../data/extent';\nimport {projectTileCoordinatesToSphere} from './globe_utils';\nimport {type CoveringTilesOptions, coveringZoomLevel} from './covering_tiles';\nimport {type CoveringTilesDetailsProvider} from './covering_tiles_details_provider';\nimport {Aabb} from '../../util/primitives/aabb';\nimport {AabbCache} from '../../util/primitives/aabb_cache';\n\n/**\n * Computes distance of a point to a tile in an arbitrary axis.\n * World is assumed to have size 1, distance returned is to the nearer tile edge.\n * @param point - Point position.\n * @param tile - Tile position.\n * @param tileSize - Tile size.\n */\nfunction distanceToTileSimple(point: number, tile: number, tileSize: number): number {\n const delta = point - tile;\n return (delta < 0) ? -delta : Math.max(0, delta - tileSize);\n}\n\nfunction distanceToTileWrapX(pointX: number, pointY: number, tileCornerX: number, tileCornerY: number, tileSize: number): number {\n const tileCornerToPointX = pointX - tileCornerX;\n\n let distanceX: number;\n if (tileCornerToPointX < 0) {\n // Point is left of tile\n distanceX = Math.min(-tileCornerToPointX, 1.0 + tileCornerToPointX - tileSize);\n } else if (tileCornerToPointX > 1) {\n // Point is right of tile\n distanceX = Math.min(Math.max(tileCornerToPointX - tileSize, 0), 1.0 - tileCornerToPointX);\n } else {\n // Point is inside tile in the X axis.\n distanceX = 0;\n }\n\n return Math.max(distanceX, distanceToTileSimple(pointY, tileCornerY, tileSize));\n}\n\nexport class GlobeCoveringTilesDetailsProvider implements CoveringTilesDetailsProvider {\n private _aabbCache: AabbCache = new AabbCache(this._computeTileAABB);\n\n /**\n * Prepares the internal AABB cache for the next frame.\n * @returns \n */\n newFrame() {\n this._aabbCache.newFrame();\n }\n\n /**\n * Returns the distance of a point to a square tile. If the point is inside the tile, returns 0.\n * Assumes the world to be of size 1.\n * Handles distances on a sphere correctly: X is wrapped when crossing the antimeridian,\n * when crossing the poles Y is mirrored and X is shifted by half world size.\n */\n distanceToTile2d(pointX: number, pointY: number, tileID: {x: number; y: number; z: number}, _aabb: Aabb): number {\n const scale = 1 << tileID.z;\n const tileMercatorSize = 1.0 / scale;\n const tileCornerX = tileID.x / scale; // In range 0..1\n const tileCornerY = tileID.y / scale; // In range 0..1\n\n const worldSize = 1.0;\n const halfWorld = 0.5 * worldSize;\n let smallestDistance = 2.0 * worldSize;\n // Original tile\n smallestDistance = Math.min(smallestDistance, distanceToTileWrapX(pointX, pointY, tileCornerX, tileCornerY, tileMercatorSize));\n // Up\n smallestDistance = Math.min(smallestDistance, distanceToTileWrapX(pointX, pointY, tileCornerX + halfWorld, -tileCornerY - tileMercatorSize, tileMercatorSize));\n // Down\n smallestDistance = Math.min(smallestDistance, distanceToTileWrapX(pointX, pointY, tileCornerX + halfWorld, worldSize + worldSize - tileCornerY - tileMercatorSize, tileMercatorSize));\n\n return smallestDistance;\n }\n\n /**\n * Returns the wrap value for a given tile, computed so that tiles will remain loaded when crossing the antimeridian.\n */\n getWrap(centerCoord: MercatorCoordinate, tileID: {x: number; y: number; z: number}, _parentWrap: number): number {\n const scale = 1 << tileID.z;\n const tileMercatorSize = 1.0 / scale;\n const tileX = tileID.x / scale; // In range 0..1\n const distanceCurrent = distanceToTileSimple(centerCoord.x, tileX, tileMercatorSize);\n const distanceLeft = distanceToTileSimple(centerCoord.x, tileX - 1.0, tileMercatorSize);\n const distanceRight = distanceToTileSimple(centerCoord.x, tileX + 1.0, tileMercatorSize);\n const distanceSmallest = Math.min(distanceCurrent, distanceLeft, distanceRight);\n if (distanceSmallest === distanceRight) {\n return 1;\n }\n if (distanceSmallest === distanceLeft) {\n return -1;\n }\n return 0;\n }\n \n allowVariableZoom(transform: IReadonlyTransform, options: CoveringTilesOptions): boolean {\n return coveringZoomLevel(transform, options) > 4;\n }\n\n allowWorldCopies(): boolean {\n return false;\n }\n\n getTileAABB(tileID: { x: number; y: number; z: number }, wrap: number, elevation: number, options: CoveringTilesOptions) {\n return this._aabbCache.getTileAABB(tileID, wrap, elevation, options);\n }\n\n private _computeTileAABB(tileID: {x: number; y: number; z: number}, _wrap: number, _elevation: number, _options: CoveringTilesOptions): Aabb {\n // We can get away with only checking the 4 tile corners for AABB construction, because for any tile of zoom level 2 or higher\n // it holds that the extremes (minimal or maximal value) of X, Y or Z coordinates must lie in one of the tile corners.\n //\n // To see why this holds, consider the formula for computing X,Y and Z from angular coordinates.\n // It goes something like this:\n //\n // X = sin(lng) * cos(lat)\n // Y = sin(lat)\n // Z = cos(lng) * cos(lat)\n //\n // Note that a tile always covers a continuous range of lng and lat values,\n // and that tiles that border the mercator north/south edge are assumed to extend all the way to the poles.\n //\n // We will consider each coordinate separately and show that an extreme must always lie in a tile corner for every axis, and must not lie inside the tile.\n //\n // For Y, it is clear that the only way for an extreme to not lie on an edge of the lat range is for the range to contain lat=90° or lat=-90° without either being the tile edge.\n // This cannot happen for any tile, these latitudes will always:\n // - either lie outside the tile entirely, thus Y will be monotonically increasing or decreasing across the entire tile, thus the extreme must lie at a corner/edge\n // - or be the tile edge itself, thus the extreme will lie at the tile edge\n //\n // For X, considering only longitude, the tile would also have to contain lng=90° or lng=-90° (with neither being the tile edge) for the extreme to not lie on a tile edge.\n // This can only happen at zoom levels 0 and 1, which are handled separately.\n // But X is also scaled by cos(lat)! However, this can only cause an extreme to lie inside the tile if the tile crosses lat=0°, which cannot happen for zoom levels other than 0.\n //\n // For Z, similarly to X, the extremes must lie at lng=0° or lng=180°, but for zoom levels other than 0 these cannot lie inside the tile. Scaling by cos(lat) has the same effect as with the X axis.\n //\n // So checking the 4 tile corners only fails for tiles with zoom level <2, and these are handled separately with hardcoded AABBs:\n // - zoom level 0 tile is the entire sphere\n // - zoom level 1 tiles are \"quarters of a sphere\"\n\n if (tileID.z <= 0) {\n // Tile covers the entire sphere.\n return new Aabb(\n [-1, -1, -1],\n [1, 1, 1]\n );\n } else if (tileID.z === 1) {\n // Tile covers a quarter of the sphere.\n // X is 1 at lng=E90°\n // Y is 1 at **north** pole\n // Z is 1 at null island\n return new Aabb(\n [tileID.x === 0 ? -1 : 0, tileID.y === 0 ? 0 : -1, -1],\n [tileID.x === 0 ? 0 : 1, tileID.y === 0 ? 1 : 0, 1]\n );\n } else {\n // Compute AABB using the 4 corners.\n\n const corners = [\n projectTileCoordinatesToSphere(0, 0, tileID.x, tileID.y, tileID.z),\n projectTileCoordinatesToSphere(EXTENT, 0, tileID.x, tileID.y, tileID.z),\n projectTileCoordinatesToSphere(EXTENT, EXTENT, tileID.x, tileID.y, tileID.z),\n projectTileCoordinatesToSphere(0, EXTENT, tileID.x, tileID.y, tileID.z),\n ];\n\n const min: vec3 = [1, 1, 1];\n const max: vec3 = [-1, -1, -1];\n\n for (const c of corners) {\n for (let i = 0; i < 3; i++) {\n min[i] = Math.min(min[i], c[i]);\n max[i] = Math.max(max[i], c[i]);\n }\n }\n\n // Special handling of poles - we need to extend the tile AABB\n // to include the pole for tiles that border mercator north/south edge.\n if (tileID.y === 0 || (tileID.y === (1 << tileID.z) - 1)) {\n const pole = [0, tileID.y === 0 ? 1 : -1, 0];\n for (let i = 0; i < 3; i++) {\n min[i] = Math.min(min[i], pole[i]);\n max[i] = Math.max(max[i], pole[i]);\n }\n }\n\n return new Aabb(\n min,\n max\n );\n }\n }\n}","import {type mat2, mat4, vec3, vec4} from 'gl-matrix';\nimport {MAX_VALID_LATITUDE, TransformHelper} from '../transform_helper';\nimport {MercatorTransform} from './mercator_transform';\nimport {LngLat, type LngLatLike, earthRadius} from '../lng_lat';\nimport {angleToRotateBetweenVectors2D, clamp, createIdentityMat4f32, createIdentityMat4f64, createMat4f32, createMat4f64, createVec3f64, createVec4f64, differenceOfAnglesDegrees, distanceOfAnglesRadians, easeCubicInOut, lerp, pointPlaneSignedDistance, warnOnce} from '../../util/util';\nimport {UnwrappedTileID, OverscaledTileID, type CanonicalTileID} from '../../source/tile_id';\nimport Point from '@mapbox/point-geometry';\nimport {browser} from '../../util/browser';\nimport {type Terrain} from '../../render/terrain';\nimport {type GlobeProjection, globeConstants} from './globe';\nimport {MercatorCoordinate} from '../mercator_coordinate';\nimport {type PointProjection} from '../../symbol/projection';\nimport {LngLatBounds} from '../lng_lat_bounds';\nimport {type IReadonlyTransform, type ITransform, type TransformUpdateResult} from '../transform_interface';\nimport {type PaddingOptions} from '../edge_insets';\nimport {tileCoordinatesToMercatorCoordinates} from './mercator_utils';\nimport {angularCoordinatesToSurfaceVector, getGlobeRadiusPixels, getZoomAdjustment, mercatorCoordinatesToAngularCoordinatesRadians, projectTileCoordinatesToSphere, sphereSurfacePointToCoordinates} from './globe_utils';\nimport {EXTENT} from '../../data/extent';\nimport type {ProjectionData, ProjectionDataParams} from './projection_data';\nimport {GlobeCoveringTilesDetailsProvider} from './globe_covering_tiles_details_provider';\nimport {Frustum} from '../../util/primitives/frustum';\nimport {type CoveringTilesDetailsProvider} from './covering_tiles_details_provider';\n\n/**\n * Describes the intersection of ray and sphere.\n * When null, no intersection occurred.\n * When both \"t\" values are the same, the ray just touched the sphere's surface.\n * When both value are different, a full intersection occurred.\n */\ntype RaySphereIntersection = {\n /**\n * The ray parameter for intersection that is \"less\" along the ray direction.\n * Note that this value can be negative, meaning that this intersection occurred before the ray's origin.\n * The intersection point can be computed as `origin + direction * tMin`.\n */\n tMin: number;\n /**\n * The ray parameter for intersection that is \"more\" along the ray direction.\n * Note that this value can be negative, meaning that this intersection occurred before the ray's origin.\n * The intersection point can be computed as `origin + direction * tMax`.\n */\n tMax: number;\n} | null;\n\nexport class GlobeTransform implements ITransform {\n private _helper: TransformHelper;\n\n //\n // Implementation of transform getters and setters\n //\n\n get pixelsToClipSpaceMatrix(): mat4 {\n return this._helper.pixelsToClipSpaceMatrix;\n }\n get clipSpaceToPixelsMatrix(): mat4 {\n return this._helper.clipSpaceToPixelsMatrix;\n }\n get pixelsToGLUnits(): [number, number] {\n return this._helper.pixelsToGLUnits;\n }\n get centerOffset(): Point {\n return this._helper.centerOffset;\n }\n get size(): Point {\n return this._helper.size;\n }\n get rotationMatrix(): mat2 {\n return this._helper.rotationMatrix;\n }\n get centerPoint(): Point {\n return this._helper.centerPoint;\n }\n get pixelsPerMeter(): number {\n return this._helper.pixelsPerMeter;\n }\n setMinZoom(zoom: number): void {\n this._helper.setMinZoom(zoom);\n }\n setMaxZoom(zoom: number): void {\n this._helper.setMaxZoom(zoom);\n }\n setMinPitch(pitch: number): void {\n this._helper.setMinPitch(pitch);\n }\n setMaxPitch(pitch: number): void {\n this._helper.setMaxPitch(pitch);\n }\n setRenderWorldCopies(renderWorldCopies: boolean): void {\n this._helper.setRenderWorldCopies(renderWorldCopies);\n }\n setBearing(bearing: number): void {\n this._helper.setBearing(bearing);\n }\n setPitch(pitch: number): void {\n this._helper.setPitch(pitch);\n }\n setRoll(roll: number): void {\n this._helper.setRoll(roll);\n }\n setFov(fov: number): void {\n this._helper.setFov(fov);\n }\n setZoom(zoom: number): void {\n this._helper.setZoom(zoom);\n }\n setCenter(center: LngLat): void {\n this._helper.setCenter(center);\n }\n setElevation(elevation: number): void {\n this._helper.setElevation(elevation);\n }\n setMinElevationForCurrentTile(elevation: number): void {\n this._helper.setMinElevationForCurrentTile(elevation);\n }\n setPadding(padding: PaddingOptions): void {\n this._helper.setPadding(padding);\n }\n interpolatePadding(start: PaddingOptions, target: PaddingOptions, t: number): void {\n return this._helper.interpolatePadding(start, target, t);\n }\n isPaddingEqual(padding: PaddingOptions): boolean {\n return this._helper.isPaddingEqual(padding);\n }\n resize(width: number, height: number): void {\n this._helper.resize(width, height);\n }\n getMaxBounds(): LngLatBounds {\n return this._helper.getMaxBounds();\n }\n setMaxBounds(bounds?: LngLatBounds): void {\n this._helper.setMaxBounds(bounds);\n }\n getCameraQueryGeometry(queryGeometry: Point[]): Point[] {\n return this._helper.getCameraQueryGeometry(this.getCameraPoint(), queryGeometry);\n }\n\n get tileSize(): number {\n return this._helper.tileSize;\n }\n get tileZoom(): number {\n return this._helper.tileZoom;\n }\n get scale(): number {\n return this._helper.scale;\n }\n get worldSize(): number {\n return this._helper.worldSize;\n }\n get width(): number {\n return this._helper.width;\n }\n get height(): number {\n return this._helper.height;\n }\n get lngRange(): [number, number] {\n return this._helper.lngRange;\n }\n get latRange(): [number, number] {\n return this._helper.latRange;\n }\n get minZoom(): number {\n return this._helper.minZoom;\n }\n get maxZoom(): number {\n return this._helper.maxZoom;\n }\n get zoom(): number {\n return this._helper.zoom;\n }\n get center(): LngLat {\n return this._helper.center;\n }\n get minPitch(): number {\n return this._helper.minPitch;\n }\n get maxPitch(): number {\n return this._helper.maxPitch;\n }\n get pitch(): number {\n return this._helper.pitch;\n }\n get pitchInRadians(): number {\n return this._helper.pitchInRadians;\n }\n get roll(): number {\n return this._helper.roll;\n }\n get rollInRadians(): number {\n return this._helper.rollInRadians;\n }\n get bearing(): number {\n return this._helper.bearing;\n }\n get bearingInRadians(): number {\n return this._helper.bearingInRadians;\n }\n get fov(): number {\n return this._helper.fov;\n }\n get fovInRadians(): number {\n return this._helper.fovInRadians;\n }\n get elevation(): number {\n return this._helper.elevation;\n }\n get minElevationForCurrentTile(): number {\n return this._helper.minElevationForCurrentTile;\n }\n get padding(): PaddingOptions {\n return this._helper.padding;\n }\n get unmodified(): boolean {\n return this._helper.unmodified;\n }\n get renderWorldCopies(): boolean {\n return this._helper.renderWorldCopies;\n }\n\n //\n // Implementation of globe transform\n //\n\n private _cachedClippingPlane: vec4 = createVec4f64();\n private _cachedFrustum: Frustum;\n\n // Transition handling\n private _lastGlobeStateEnabled: boolean = true;\n\n /**\n * Stores when {@link newFrameUpdate} was last called.\n * Serves as a unified clock for globe (instead of each function using a slightly different value from `browser.now()`).\n */\n private _lastUpdateTimeSeconds = browser.now() / 1000.0;\n /**\n * Stores when switch from globe to mercator or back last occurred, for animation purposes.\n * This switch can be caused either by the map passing the threshold zoom level,\n * or by {@link setGlobeViewAllowed} being called.\n */\n private _lastGlobeChangeTimeSeconds: number = browser.now() / 1000 - 10; // Ten seconds before transform creation\n\n private _skipNextAnimation: boolean = true;\n\n private _projectionMatrix: mat4 = createIdentityMat4f64();\n private _globeViewProjMatrix32f: mat4 = createIdentityMat4f32(); // Must be 32 bit floats, otherwise WebGL calls in Chrome get very slow.\n private _globeViewProjMatrixNoCorrection: mat4 = createIdentityMat4f64();\n private _globeViewProjMatrixNoCorrectionInverted: mat4 = createIdentityMat4f64();\n private _globeProjMatrixInverted: mat4 = createIdentityMat4f64();\n\n private _cameraPosition: vec3 = createVec3f64();\n\n /**\n * Whether globe projection is allowed to be used.\n * Set with {@link setGlobeViewAllowed}.\n * Can be used to dynamically disable globe projection without changing the map's projection,\n * which would cause a map reload.\n */\n private _globeProjectionAllowed = true;\n\n /**\n * Note: projection instance should only be accessed in the {@link newFrameUpdate} function.\n * to ensure the transform's state isn't unintentionally changed.\n */\n private _projectionInstance: GlobeProjection;\n private _globeLatitudeErrorCorrectionRadians: number = 0;\n\n /**\n * True when globe render path should be used instead of the old but simpler mercator rendering.\n * Globe automatically transitions to mercator at high zoom levels, which causes a switch from\n * globe to mercator render path.\n */\n get isGlobeRendering(): boolean {\n return this._globeness > 0;\n }\n\n /**\n * Globe projection can smoothly interpolate between globe view and mercator. This variable controls this interpolation.\n * Value 0 is mercator, value 1 is globe, anything between is an interpolation between the two projections.\n */\n private _globeness: number = 1.0;\n private _mercatorTransform: MercatorTransform;\n\n private _nearZ: number;\n private _farZ: number;\n\n private _coveringTilesDetailsProvider: GlobeCoveringTilesDetailsProvider;\n private _adaptive: boolean;\n\n public constructor(globeProjection: GlobeProjection, globeProjectionEnabled: boolean = true, adaptive:boolean = true) {\n this._adaptive = adaptive;\n\n this._helper = new TransformHelper({\n calcMatrices: () => { this._calcMatrices(); },\n getConstrained: (center, zoom) => { return this.getConstrained(center, zoom); }\n });\n this._globeProjectionAllowed = globeProjectionEnabled;\n this._globeness = globeProjectionEnabled ? 1 : 0; // When transform is cloned for use in symbols, `_updateAnimation` function which usually sets this value never gets called.\n this._projectionInstance = globeProjection;\n this._mercatorTransform = new MercatorTransform();\n this._coveringTilesDetailsProvider = new GlobeCoveringTilesDetailsProvider();\n }\n\n clone(): ITransform {\n const clone = new GlobeTransform(null, this._globeProjectionAllowed);\n clone._applyGlobeTransform(this);\n clone.apply(this);\n return clone;\n }\n\n public apply(that: IReadonlyTransform): void {\n this._helper.apply(that);\n this._mercatorTransform.apply(this);\n }\n\n private _applyGlobeTransform(that: GlobeTransform): void {\n this._globeness = that._globeness;\n this._globeLatitudeErrorCorrectionRadians = that._globeLatitudeErrorCorrectionRadians;\n }\n\n public get projectionMatrix(): mat4 { return this.isGlobeRendering ? this._projectionMatrix : this._mercatorTransform.projectionMatrix; }\n\n public get modelViewProjectionMatrix(): mat4 { return this.isGlobeRendering ? this._globeViewProjMatrixNoCorrection : this._mercatorTransform.modelViewProjectionMatrix; }\n\n public get inverseProjectionMatrix(): mat4 { return this.isGlobeRendering ? this._globeProjMatrixInverted : this._mercatorTransform.inverseProjectionMatrix; }\n\n public get cameraPosition(): vec3 {\n // Return a copy - don't let outside code mutate our precomputed camera position.\n const copy = createVec3f64(); // Ensure the resulting vector is float64s\n copy[0] = this._cameraPosition[0];\n copy[1] = this._cameraPosition[1];\n copy[2] = this._cameraPosition[2];\n return copy;\n }\n\n get cameraToCenterDistance(): number {\n // Globe uses the same cameraToCenterDistance as mercator.\n return this._mercatorTransform.cameraToCenterDistance;\n }\n\n public get nearZ(): number { return this._nearZ; }\n public get farZ(): number { return this._farZ; }\n\n /**\n * Returns whether globe view is allowed.\n * When allowed, globe fill function as normal, displaying a 3D planet,\n * but transitioning to mercator at high zoom levels.\n * Otherwise, mercator will be used at all zoom levels instead.\n * Set with {@link setGlobeViewAllowed}.\n */\n public getGlobeViewAllowed(): boolean {\n return this._globeProjectionAllowed;\n }\n\n /**\n * Sets whether globe view is allowed. When allowed, globe fill function as normal, displaying a 3D planet,\n * but transitioning to mercator at high zoom levels.\n * Otherwise, mercator will be used at all zoom levels instead.\n * When globe is caused to transition to mercator by this function, the transition will be animated.\n * @param allow - Sets whether glove view is allowed.\n * @param animateTransition - Controls whether the transition between globe view and mercator (if triggered by this call) should be animated. True by default.\n */\n public setGlobeViewAllowed(allow: boolean, animateTransition: boolean = true) {\n if (allow === this._globeProjectionAllowed) {\n return;\n }\n\n if (!animateTransition) {\n this._skipNextAnimation = true;\n }\n this._globeProjectionAllowed = allow;\n this._lastGlobeChangeTimeSeconds = this._lastUpdateTimeSeconds;\n }\n\n /**\n * Should be called at the beginning of every frame to synchronize the transform with the underlying projection.\n */\n newFrameUpdate(): TransformUpdateResult {\n this._lastUpdateTimeSeconds = browser.now() / 1000.0;\n const oldGlobeRendering = this.isGlobeRendering;\n\n this._globeness = (!this._adaptive && this._globeProjectionAllowed) ? 1 : this._computeGlobenessAnimation();\n // Everything below this comment must happen AFTER globeness update\n this._updateErrorCorrectionValue();\n this._calcMatrices();\n this._coveringTilesDetailsProvider.newFrame();\n\n if (oldGlobeRendering === this.isGlobeRendering) {\n return {\n forcePlacementUpdate: false,\n };\n } else {\n return {\n forcePlacementUpdate: true,\n fireProjectionEvent: {\n type: 'projectiontransition',\n newProjection: this.isGlobeRendering ? 'globe' : 'globe-mercator',\n },\n forceSourceUpdate: true,\n };\n }\n }\n\n /**\n * This function should never be called on a cloned transform, thus ensuring that\n * the state of a cloned transform is never changed after creation.\n */\n private _updateErrorCorrectionValue(): void {\n if (!this._projectionInstance) {\n return;\n }\n this._projectionInstance.useGlobeRendering = this.isGlobeRendering;\n this._projectionInstance.errorQueryLatitudeDegrees = this.center.lat;\n this._globeLatitudeErrorCorrectionRadians = this._projectionInstance.latitudeErrorCorrectionRadians;\n }\n\n /**\n * Compute new globeness, if needed.\n */\n private _computeGlobenessAnimation(): number {\n // Update globe transition animation\n const globeState = this._globeProjectionAllowed && this.zoom < globeConstants.maxGlobeZoom;\n const currentTimeSeconds = this._lastUpdateTimeSeconds;\n if (globeState !== this._lastGlobeStateEnabled) {\n this._lastGlobeChangeTimeSeconds = currentTimeSeconds;\n this._lastGlobeStateEnabled = globeState;\n }\n\n const oldGlobeness = this._globeness;\n\n // Transition parameter, where 0 is the start and 1 is end.\n const globeTransition = Math.min(Math.max((currentTimeSeconds - this._lastGlobeChangeTimeSeconds) / globeConstants.globeTransitionTimeSeconds, 0.0), 1.0);\n let newGlobeness = globeState ? globeTransition : (1.0 - globeTransition);\n\n if (this._skipNextAnimation) {\n newGlobeness = globeState ? 1.0 : 0.0;\n this._lastGlobeChangeTimeSeconds = currentTimeSeconds - globeConstants.globeTransitionTimeSeconds * 2.0;\n this._skipNextAnimation = false;\n }\n\n newGlobeness = easeCubicInOut(newGlobeness); // Smooth animation\n\n if (oldGlobeness !== newGlobeness) {\n this.setCenter(new LngLat(\n this._mercatorTransform.center.lng + differenceOfAnglesDegrees(this._mercatorTransform.center.lng, this.center.lng) * newGlobeness,\n lerp(this._mercatorTransform.center.lat, this.center.lat, newGlobeness)\n ));\n this.setZoom(lerp(this._mercatorTransform.zoom, this.zoom, newGlobeness));\n }\n\n return newGlobeness;\n }\n\n isRenderingDirty(): boolean {\n // Globe transition\n return (this._lastUpdateTimeSeconds - this._lastGlobeChangeTimeSeconds) < globeConstants.globeTransitionTimeSeconds;\n }\n\n getProjectionData(params: ProjectionDataParams): ProjectionData {\n const {overscaledTileID, aligned, applyTerrainMatrix, applyGlobeMatrix} = params;\n const data = this._mercatorTransform.getProjectionData({overscaledTileID, aligned, applyTerrainMatrix});\n\n // Set 'projectionMatrix' to actual globe transform\n if (this.isGlobeRendering) {\n data.mainMatrix = this._globeViewProjMatrix32f;\n }\n\n data.clippingPlane = this._cachedClippingPlane as [number, number, number, number];\n data.projectionTransition = applyGlobeMatrix ? this._globeness : 0;\n\n return data;\n }\n\n private _computeClippingPlane(globeRadiusPixels: number): vec4 {\n // We want to compute a plane equation that, when applied to the unit sphere generated\n // in the vertex shader, places all visible parts of the sphere into the positive half-space\n // and all the non-visible parts in the negative half-space.\n // We can then use that to accurately clip all non-visible geometry.\n\n // cam....------------A\n // .... |\n // .... |\n // ....B\n // ggggggggg\n // gggggg | .gggggg\n // ggg | ...ggg ^\n // gg | |\n // g | y\n // g | |\n // g C #---x--->\n //\n // Notes:\n // - note the coordinate axes\n // - \"g\" marks the globe edge\n // - the dotted line is the camera center \"ray\" - we are looking in this direction\n // - \"cam\" is camera origin\n // - \"C\" is globe center\n // - \"B\" is the point on \"top\" of the globe - camera is looking at B - \"B\" is the intersection between the camera center ray and the globe\n // - this._pitchInRadians is the angle at B between points cam,B,A\n // - this.cameraToCenterDistance is the distance from camera to \"B\"\n // - globe radius is (0.5 * this.worldSize)\n // - \"T\" is any point where a tangent line from \"cam\" touches the globe surface\n // - elevation is assumed to be zero - globe rendering must be separate from terrain rendering anyway\n\n const pitch = this.pitchInRadians;\n // scale things so that the globe radius is 1\n const distanceCameraToB = this.cameraToCenterDistance / globeRadiusPixels;\n const radius = 1;\n\n // Distance from camera to \"A\" - the point at the same elevation as camera, right above center point on globe\n const distanceCameraToA = Math.sin(pitch) * distanceCameraToB;\n // Distance from \"A\" to \"C\"\n const distanceAtoC = (Math.cos(pitch) * distanceCameraToB + radius);\n // Distance from camera to \"C\" - the globe center\n const distanceCameraToC = Math.sqrt(distanceCameraToA * distanceCameraToA + distanceAtoC * distanceAtoC);\n // cam - C - T angle cosine (at C)\n const camCTcosine = radius / distanceCameraToC;\n // Distance from globe center to the plane defined by all possible \"T\" points\n const tangentPlaneDistanceToC = camCTcosine * radius;\n\n let vectorCtoCamX = -distanceCameraToA;\n let vectorCtoCamY = distanceAtoC;\n // Normalize the vector\n const vectorCtoCamLength = Math.sqrt(vectorCtoCamX * vectorCtoCamX + vectorCtoCamY * vectorCtoCamY);\n vectorCtoCamX /= vectorCtoCamLength;\n vectorCtoCamY /= vectorCtoCamLength;\n\n // Note the swizzled components\n const planeVector: vec3 = [0, vectorCtoCamX, vectorCtoCamY];\n // Apply transforms - lat, lng and angle (NOT pitch - already accounted for, as it affects the tangent plane)\n vec3.rotateZ(planeVector, planeVector, [0, 0, 0], -this.bearingInRadians);\n vec3.rotateX(planeVector, planeVector, [0, 0, 0], -1 * this.center.lat * Math.PI / 180.0);\n vec3.rotateY(planeVector, planeVector, [0, 0, 0], this.center.lng * Math.PI / 180.0);\n // Scale the plane vector up\n // we don't want the actually visible parts of the sphere to end up beyond distance 1 from the plane - otherwise they would be clipped by the near plane.\n const scale = 0.25;\n vec3.scale(planeVector, planeVector, scale);\n return [...planeVector, -tangentPlaneDistanceToC * scale];\n }\n\n public isLocationOccluded(location: LngLat): boolean {\n return !this.isSurfacePointVisible(angularCoordinatesToSurfaceVector(location));\n }\n\n public transformLightDirection(dir: vec3): vec3 {\n const sphereX = this._helper._center.lng * Math.PI / 180.0;\n const sphereY = this._helper._center.lat * Math.PI / 180.0;\n\n const len = Math.cos(sphereY);\n const spherePos: vec3 = [\n Math.sin(sphereX) * len,\n Math.sin(sphereY),\n Math.cos(sphereX) * len\n ];\n\n const axisRight: vec3 = [spherePos[2], 0.0, -spherePos[0]]; // Equivalent to cross(vec3(0.0, 1.0, 0.0), vec)\n const axisDown: vec3 = [0, 0, 0];\n vec3.cross(axisDown, axisRight, spherePos);\n vec3.normalize(axisRight, axisRight);\n vec3.normalize(axisDown, axisDown);\n\n const transformed: vec3 = [\n axisRight[0] * dir[0] + axisDown[0] * dir[1] + spherePos[0] * dir[2],\n axisRight[1] * dir[0] + axisDown[1] * dir[1] + spherePos[1] * dir[2],\n axisRight[2] * dir[0] + axisDown[2] * dir[1] + spherePos[2] * dir[2]\n ];\n\n const normalized: vec3 = [0, 0, 0];\n vec3.normalize(normalized, transformed);\n return normalized;\n }\n\n private getAnimatedLatitude() {\n return lerp(this._mercatorTransform.center.lat, this._helper._center.lat, this._globeness);\n }\n\n public getPixelScale(): number {\n return lerp(this._mercatorTransform.getPixelScale(), 1.0 / Math.cos(this.getAnimatedLatitude() * Math.PI / 180), this._globeness);\n }\n\n public getCircleRadiusCorrection(): number {\n return lerp(this._mercatorTransform.getCircleRadiusCorrection(), Math.cos(this.getAnimatedLatitude() * Math.PI / 180), this._globeness);\n }\n\n public getPitchedTextCorrection(textAnchorX: number, textAnchorY: number, tileID: UnwrappedTileID): number {\n const mercatorCorrection = this._mercatorTransform.getPitchedTextCorrection(textAnchorX, textAnchorY, tileID);\n if (!this.isGlobeRendering) {\n return mercatorCorrection;\n }\n const mercator = tileCoordinatesToMercatorCoordinates(textAnchorX, textAnchorY, tileID.canonical);\n const angular = mercatorCoordinatesToAngularCoordinatesRadians(mercator.x, mercator.y);\n return lerp(mercatorCorrection, this.getCircleRadiusCorrection() / Math.cos(angular[1]), this._globeness);\n }\n\n public projectTileCoordinates(x: number, y: number, unwrappedTileID: UnwrappedTileID, getElevation: (x: number, y: number) => number): PointProjection {\n if (!this.isGlobeRendering) {\n return this._mercatorTransform.projectTileCoordinates(x, y, unwrappedTileID, getElevation);\n }\n\n const canonical = unwrappedTileID.canonical;\n const spherePos = projectTileCoordinatesToSphere(x, y, canonical.x, canonical.y, canonical.z);\n const elevation = getElevation ? getElevation(x, y) : 0.0;\n const vectorMultiplier = 1.0 + elevation / earthRadius;\n const pos: vec4 = [spherePos[0] * vectorMultiplier, spherePos[1] * vectorMultiplier, spherePos[2] * vectorMultiplier, 1];\n vec4.transformMat4(pos, pos, this._globeViewProjMatrixNoCorrection);\n\n // Also check whether the point projects to the backfacing side of the sphere.\n const plane = this._cachedClippingPlane;\n // dot(position on sphere, occlusion plane equation)\n const dotResult = plane[0] * spherePos[0] + plane[1] * spherePos[1] + plane[2] * spherePos[2] + plane[3];\n const isOccluded = dotResult < 0.0;\n\n return {\n point: new Point(pos[0] / pos[3], pos[1] / pos[3]),\n signedDistanceFromCamera: pos[3],\n isOccluded\n };\n }\n\n private _calcMatrices(): void {\n if (!this._helper._width || !this._helper._height) {\n return;\n }\n\n if (this._mercatorTransform) {\n this._mercatorTransform.apply(this, true);\n }\n\n const globeRadiusPixels = getGlobeRadiusPixels(this.worldSize, this.center.lat);\n\n // Construct a completely separate matrix for globe view\n const globeMatrix = createMat4f64();\n const globeMatrixUncorrected = createMat4f64();\n this._nearZ = 0.5;\n this._farZ = this.cameraToCenterDistance + globeRadiusPixels * 2.0; // just set the far plane far enough - we will calculate our own z in the vertex shader anyway\n mat4.perspective(globeMatrix, this.fovInRadians, this.width / this.height, this._nearZ, this._farZ);\n\n // Apply center of perspective offset\n const offset = this.centerOffset;\n globeMatrix[8] = -offset.x * 2 / this._helper._width;\n globeMatrix[9] = offset.y * 2 / this._helper._height;\n this._projectionMatrix = mat4.clone(globeMatrix);\n\n this._globeProjMatrixInverted = createMat4f64();\n mat4.invert(this._globeProjMatrixInverted, globeMatrix);\n mat4.translate(globeMatrix, globeMatrix, [0, 0, -this.cameraToCenterDistance]);\n mat4.rotateZ(globeMatrix, globeMatrix, this.rollInRadians);\n mat4.rotateX(globeMatrix, globeMatrix, -this.pitchInRadians);\n mat4.rotateZ(globeMatrix, globeMatrix, this.bearingInRadians);\n mat4.translate(globeMatrix, globeMatrix, [0.0, 0, -globeRadiusPixels]);\n // Rotate the sphere to center it on viewed coordinates\n\n const scaleVec = createVec3f64();\n scaleVec[0] = globeRadiusPixels;\n scaleVec[1] = globeRadiusPixels;\n scaleVec[2] = globeRadiusPixels;\n\n // Keep a atan-correction-free matrix for transformations done on the CPU with accurate math\n mat4.rotateX(globeMatrixUncorrected, globeMatrix, this.center.lat * Math.PI / 180.0);\n mat4.rotateY(globeMatrixUncorrected, globeMatrixUncorrected, -this.center.lng * Math.PI / 180.0);\n mat4.scale(globeMatrixUncorrected, globeMatrixUncorrected, scaleVec); // Scale the unit sphere to a sphere with diameter of 1\n this._globeViewProjMatrixNoCorrection = globeMatrixUncorrected;\n\n mat4.rotateX(globeMatrix, globeMatrix, this.center.lat * Math.PI / 180.0 - this._globeLatitudeErrorCorrectionRadians);\n mat4.rotateY(globeMatrix, globeMatrix, -this.center.lng * Math.PI / 180.0);\n mat4.scale(globeMatrix, globeMatrix, scaleVec); // Scale the unit sphere to a sphere with diameter of 1\n this._globeViewProjMatrix32f = new Float32Array(globeMatrix);\n\n this._globeViewProjMatrixNoCorrectionInverted = createMat4f64();\n mat4.invert(this._globeViewProjMatrixNoCorrectionInverted, globeMatrixUncorrected);\n\n const zero = createVec3f64();\n this._cameraPosition = createVec3f64();\n this._cameraPosition[2] = this.cameraToCenterDistance / globeRadiusPixels;\n vec3.rotateZ(this._cameraPosition, this._cameraPosition, zero, -this.rollInRadians);\n vec3.rotateX(this._cameraPosition, this._cameraPosition, zero, this.pitchInRadians);\n vec3.rotateZ(this._cameraPosition, this._cameraPosition, zero, -this.bearingInRadians);\n vec3.add(this._cameraPosition, this._cameraPosition, [0, 0, 1]);\n vec3.rotateX(this._cameraPosition, this._cameraPosition, zero, -this.center.lat * Math.PI / 180.0);\n vec3.rotateY(this._cameraPosition, this._cameraPosition, zero, this.center.lng * Math.PI / 180.0);\n\n this._cachedClippingPlane = this._computeClippingPlane(globeRadiusPixels);\n\n const matrix = mat4.clone(this._globeViewProjMatrixNoCorrectionInverted);\n mat4.scale(matrix, matrix, [1, 1, -1]);\n this._cachedFrustum = Frustum.fromInvProjectionMatrix(matrix);\n }\n\n calculateFogMatrix(_unwrappedTileID: UnwrappedTileID): mat4 {\n warnOnce('calculateFogMatrix is not supported on globe projection.');\n const m = createMat4f64();\n mat4.identity(m);\n return m;\n }\n\n getVisibleUnwrappedCoordinates(tileID: CanonicalTileID): UnwrappedTileID[] {\n // Globe has no wrap.\n return [new UnwrappedTileID(0, tileID)];\n }\n\n getCameraFrustum(): Frustum {\n return this.isGlobeRendering ? this._cachedFrustum : this._mercatorTransform.getCameraFrustum();\n }\n getClippingPlane(): vec4 | null {\n return this.isGlobeRendering ? this._cachedClippingPlane : this._mercatorTransform.getClippingPlane();\n }\n getCoveringTilesDetailsProvider(): CoveringTilesDetailsProvider {\n return this.isGlobeRendering ? this._coveringTilesDetailsProvider : this._mercatorTransform.getCoveringTilesDetailsProvider();\n }\n\n recalculateZoomAndCenter(terrain?: Terrain): void {\n this._mercatorTransform.recalculateZoomAndCenter(terrain);\n this.apply(this._mercatorTransform);\n }\n\n maxPitchScaleFactor(): number {\n // Using mercator version of this should be good enough approximation for globe.\n return this._mercatorTransform.maxPitchScaleFactor();\n }\n\n getCameraPoint(): Point {\n return this._mercatorTransform.getCameraPoint();\n }\n\n getCameraAltitude(): number {\n return this._mercatorTransform.getCameraAltitude();\n }\n\n getCameraLngLat(): LngLat {\n return this._mercatorTransform.getCameraLngLat();\n }\n\n lngLatToCameraDepth(lngLat: LngLat, elevation: number): number {\n if (!this.isGlobeRendering) {\n return this._mercatorTransform.lngLatToCameraDepth(lngLat, elevation);\n }\n if (!this._globeViewProjMatrixNoCorrection) {\n return 1.0; // _calcMatrices hasn't run yet\n }\n const vec = angularCoordinatesToSurfaceVector(lngLat);\n vec3.scale(vec, vec, (1.0 + elevation / earthRadius));\n const result = createVec4f64();\n vec4.transformMat4(result, [vec[0], vec[1], vec[2], 1], this._globeViewProjMatrixNoCorrection);\n return result[2] / result[3];\n }\n\n precacheTiles(coords: OverscaledTileID[]): void {\n this._mercatorTransform.precacheTiles(coords);\n }\n\n getBounds(): LngLatBounds {\n if (!this.isGlobeRendering) {\n return this._mercatorTransform.getBounds();\n }\n\n const xMid = this.width * 0.5;\n const yMid = this.height * 0.5;\n\n // LngLat extremes will probably tend to be in screen corners or in middle of screen edges.\n // These test points should result in a pretty good approximation.\n const testPoints = [\n new Point(0, 0),\n new Point(xMid, 0),\n new Point(this.width, 0),\n new Point(this.width, yMid),\n new Point(this.width, this.height),\n new Point(xMid, this.height),\n new Point(0, this.height),\n new Point(0, yMid),\n ];\n\n const projectedPoints = [];\n for (const p of testPoints) {\n projectedPoints.push(this.unprojectScreenPoint(p));\n }\n\n // We can't construct a simple min/max aabb, since points might lie on either side of the antimeridian.\n // We will instead compute the furthest points relative to map center.\n // We also take advantage of the fact that `unprojectScreenPoint` will snap pixels\n // outside the planet to the closest point on the planet's horizon.\n let mostEast = 0, mostWest = 0, mostNorth = 0, mostSouth = 0; // We will store these values signed.\n const center = this.center;\n for (const p of projectedPoints) {\n const dLng = differenceOfAnglesDegrees(center.lng, p.lng);\n const dLat = differenceOfAnglesDegrees(center.lat, p.lat);\n if (dLng < mostWest) {\n mostWest = dLng;\n }\n if (dLng > mostEast) {\n mostEast = dLng;\n }\n if (dLat < mostSouth) {\n mostSouth = dLat;\n }\n if (dLat > mostNorth) {\n mostNorth = dLat;\n }\n }\n\n const boundsArray: [number, number, number, number] = [\n center.lng + mostWest, // west\n center.lat + mostSouth, // south\n center.lng + mostEast, // east\n center.lat + mostNorth // north\n ];\n\n // Sometimes the poles might end up not being on the horizon,\n // thus not being detected as the northernmost/southernmost points.\n // We fix that here.\n if (this.isSurfacePointOnScreen([0, 1, 0])) {\n // North pole is visible\n // This also means that the entire longitude range must be visible\n boundsArray[3] = 90;\n boundsArray[0] = -180;\n boundsArray[2] = 180;\n }\n if (this.isSurfacePointOnScreen([0, -1, 0])) {\n // South pole is visible\n boundsArray[1] = -90;\n boundsArray[0] = -180;\n boundsArray[2] = 180;\n }\n\n return new LngLatBounds(boundsArray);\n }\n\n getConstrained(lngLat: LngLat, zoom: number): { center: LngLat; zoom: number } {\n // Globe: TODO: respect _lngRange, _latRange\n // It is possible to implement exact constrain for globe, but I don't think it is worth the effort.\n const constrainedLat = clamp(lngLat.lat, -MAX_VALID_LATITUDE, MAX_VALID_LATITUDE);\n const constrainedZoom = clamp(+zoom, this.minZoom + getZoomAdjustment(0, constrainedLat), this.maxZoom);\n return {\n center: new LngLat(\n lngLat.lng,\n constrainedLat\n ),\n zoom: constrainedZoom\n };\n }\n\n calculateCenterFromCameraLngLatAlt(lngLat: LngLatLike, alt: number, bearing?: number, pitch?: number): {center: LngLat; elevation: number; zoom: number} {\n return this._mercatorTransform.calculateCenterFromCameraLngLatAlt(lngLat, alt, bearing, pitch);\n }\n\n /**\n * Note: automatically adjusts zoom to keep planet size consistent\n * (same size before and after a {@link setLocationAtPoint} call).\n */\n setLocationAtPoint(lnglat: LngLat, point: Point): void {\n if (!this.isGlobeRendering) {\n this._mercatorTransform.setLocationAtPoint(lnglat, point);\n this.apply(this._mercatorTransform);\n return;\n }\n // This returns some fake coordinates for pixels that do not lie on the planet.\n // Whatever uses this `setLocationAtPoint` function will need to account for that.\n const pointLngLat = this.unprojectScreenPoint(point);\n const vecToPixelCurrent = angularCoordinatesToSurfaceVector(pointLngLat);\n const vecToTarget = angularCoordinatesToSurfaceVector(lnglat);\n\n const zero = createVec3f64();\n vec3.zero(zero);\n\n const rotatedPixelVector = createVec3f64();\n vec3.rotateY(rotatedPixelVector, vecToPixelCurrent, zero, -this.center.lng * Math.PI / 180.0);\n vec3.rotateX(rotatedPixelVector, rotatedPixelVector, zero, this.center.lat * Math.PI / 180.0);\n\n // We are looking for the lng,lat that will rotate `vecToTarget`\n // so that it is equal to `rotatedPixelVector`.\n\n // The second rotation around X axis cannot change the X component,\n // so we first must find the longitude such that rotating `vecToTarget` with it\n // will place it so its X component is equal to X component of `rotatedPixelVector`.\n // There will exist zero, one or two longitudes that satisfy this.\n\n // x |\n // / |\n // / | the line is the target X - rotatedPixelVector.x\n // / | the x is vecToTarget projected to x,z plane\n // . | the dot is origin\n //\n // We need to rotate vecToTarget so that it intersects the line.\n // If vecToTarget is shorter than the distance to the line from origin, it is impossible.\n\n // Otherwise, we compute the intersection of the line with a ring with radius equal to\n // length of vecToTarget projected to XZ plane.\n\n const vecToTargetXZLengthSquared = vecToTarget[0] * vecToTarget[0] + vecToTarget[2] * vecToTarget[2];\n const targetXSquared = rotatedPixelVector[0] * rotatedPixelVector[0];\n if (vecToTargetXZLengthSquared < targetXSquared) {\n // Zero solutions - setLocationAtPoint is impossible.\n return;\n }\n\n // The intersection's Z coordinates\n const intersectionA = Math.sqrt(vecToTargetXZLengthSquared - targetXSquared);\n const intersectionB = -intersectionA; // the second solution\n\n const lngA = angleToRotateBetweenVectors2D(vecToTarget[0], vecToTarget[2], rotatedPixelVector[0], intersectionA);\n const lngB = angleToRotateBetweenVectors2D(vecToTarget[0], vecToTarget[2], rotatedPixelVector[0], intersectionB);\n\n const vecToTargetLngA = createVec3f64();\n vec3.rotateY(vecToTargetLngA, vecToTarget, zero, -lngA);\n const latA = angleToRotateBetweenVectors2D(vecToTargetLngA[1], vecToTargetLngA[2], rotatedPixelVector[1], rotatedPixelVector[2]);\n const vecToTargetLngB = createVec3f64();\n vec3.rotateY(vecToTargetLngB, vecToTarget, zero, -lngB);\n const latB = angleToRotateBetweenVectors2D(vecToTargetLngB[1], vecToTargetLngB[2], rotatedPixelVector[1], rotatedPixelVector[2]);\n // Is at least one of the needed latitudes valid?\n\n const limit = Math.PI * 0.5;\n\n const isValidA = latA >= -limit && latA <= limit;\n const isValidB = latB >= -limit && latB <= limit;\n\n let validLng: number;\n let validLat: number;\n if (isValidA && isValidB) {\n // Pick the solution that is closer to current map center.\n const centerLngRadians = this.center.lng * Math.PI / 180.0;\n const centerLatRadians = this.center.lat * Math.PI / 180.0;\n const lngDistA = distanceOfAnglesRadians(lngA, centerLngRadians);\n const latDistA = distanceOfAnglesRadians(latA, centerLatRadians);\n const lngDistB = distanceOfAnglesRadians(lngB, centerLngRadians);\n const latDistB = distanceOfAnglesRadians(latB, centerLatRadians);\n\n if ((lngDistA + latDistA) < (lngDistB + latDistB)) {\n validLng = lngA;\n validLat = latA;\n } else {\n validLng = lngB;\n validLat = latB;\n }\n } else if (isValidA) {\n validLng = lngA;\n validLat = latA;\n } else if (isValidB) {\n validLng = lngB;\n validLat = latB;\n } else {\n // No solution.\n return;\n }\n\n const newLng = validLng / Math.PI * 180;\n const newLat = validLat / Math.PI * 180;\n const oldLat = this.center.lat;\n this.setCenter(new LngLat(newLng, clamp(newLat, -90, 90)));\n this.setZoom(this.zoom + getZoomAdjustment(oldLat, this.center.lat));\n }\n\n locationToScreenPoint(lnglat: LngLat, terrain?: Terrain): Point {\n if (!this.isGlobeRendering) {\n return this._mercatorTransform.locationToScreenPoint(lnglat, terrain);\n }\n\n const pos = angularCoordinatesToSurfaceVector(lnglat);\n\n if (terrain) {\n const elevation = terrain.getElevationForLngLatZoom(lnglat, this._helper._tileZoom);\n vec3.scale(pos, pos, 1.0 + elevation / earthRadius);\n }\n\n return this._projectSurfacePointToScreen(pos);\n }\n\n /**\n * Projects a given vector on the surface of a unit sphere (or possible above the surface)\n * and returns its coordinates on screen in pixels.\n */\n private _projectSurfacePointToScreen(pos: vec3): Point {\n const projected = createVec4f64();\n vec4.transformMat4(projected, [...pos, 1] as vec4, this._globeViewProjMatrixNoCorrection);\n projected[0] /= projected[3];\n projected[1] /= projected[3];\n return new Point(\n (projected[0] * 0.5 + 0.5) * this.width,\n (-projected[1] * 0.5 + 0.5) * this.height\n );\n }\n\n screenPointToMercatorCoordinate(p: Point, terrain?: Terrain): MercatorCoordinate {\n if (!this.isGlobeRendering || terrain) {\n // Mercator has terrain handling implemented properly and since terrain\n // simply draws tile coordinates into a special framebuffer, this works well even for globe.\n return this._mercatorTransform.screenPointToMercatorCoordinate(p, terrain);\n }\n return MercatorCoordinate.fromLngLat(this.unprojectScreenPoint(p));\n }\n\n screenPointToLocation(p: Point, terrain?: Terrain): LngLat {\n if (!this.isGlobeRendering || terrain) {\n // Mercator has terrain handling implemented properly and since terrain\n // simply draws tile coordinates into a special framebuffer, this works well even for globe.\n return this._mercatorTransform.screenPointToLocation(p, terrain);\n }\n return this.unprojectScreenPoint(p);\n }\n\n isPointOnMapSurface(p: Point, terrain?: Terrain): boolean {\n if (!this.isGlobeRendering) {\n return this._mercatorTransform.isPointOnMapSurface(p, terrain);\n }\n\n const rayOrigin = this._cameraPosition;\n const rayDirection = this.getRayDirectionFromPixel(p);\n\n const intersection = this.rayPlanetIntersection(rayOrigin, rayDirection);\n\n return !!intersection;\n }\n\n /**\n * Computes normalized direction of a ray from the camera to the given screen pixel.\n */\n getRayDirectionFromPixel(p: Point): vec3 {\n const pos = createVec4f64();\n pos[0] = (p.x / this.width) * 2.0 - 1.0;\n pos[1] = ((p.y / this.height) * 2.0 - 1.0) * -1.0;\n pos[2] = 1;\n pos[3] = 1;\n vec4.transformMat4(pos, pos, this._globeViewProjMatrixNoCorrectionInverted);\n pos[0] /= pos[3];\n pos[1] /= pos[3];\n pos[2] /= pos[3];\n const ray = createVec3f64();\n ray[0] = pos[0] - this._cameraPosition[0];\n ray[1] = pos[1] - this._cameraPosition[1];\n ray[2] = pos[2] - this._cameraPosition[2];\n const rayNormalized: vec3 = createVec3f64();\n vec3.normalize(rayNormalized, ray);\n return rayNormalized;\n }\n\n /**\n * For a given point on the unit sphere of the planet, returns whether it is visible from\n * camera's position (not taking into account camera rotation at all).\n */\n private isSurfacePointVisible(p: vec3): boolean {\n if (!this.isGlobeRendering) {\n return true;\n }\n const plane = this._cachedClippingPlane;\n // dot(position on sphere, occlusion plane equation)\n const dotResult = plane[0] * p[0] + plane[1] * p[1] + plane[2] * p[2] + plane[3];\n return dotResult >= 0.0;\n }\n\n /**\n * Returns whether surface point is visible on screen.\n * It must both project to a pixel in screen bounds and not be occluded by the planet.\n */\n private isSurfacePointOnScreen(vec: vec3): boolean {\n if (!this.isSurfacePointVisible(vec)) {\n return false;\n }\n\n const projected = createVec4f64();\n vec4.transformMat4(projected, [...vec, 1] as vec4, this._globeViewProjMatrixNoCorrection);\n projected[0] /= projected[3];\n projected[1] /= projected[3];\n projected[2] /= projected[3];\n return projected[0] > -1 && projected[0] < 1 &&\n projected[1] > -1 && projected[1] < 1 &&\n projected[2] > -1 && projected[2] < 1;\n }\n\n /**\n * Returns the two intersection points of the ray and the planet's sphere,\n * or null if no intersection occurs.\n * The intersections are encoded as the parameter for parametric ray equation,\n * with `tMin` being the first intersection and `tMax` being the second.\n * Eg. the nearer intersection point can then be computed as `origin + direction * tMin`.\n * @param origin - The ray origin.\n * @param direction - The normalized ray direction.\n */\n private rayPlanetIntersection(origin: vec3, direction: vec3): RaySphereIntersection {\n const originDotDirection = vec3.dot(origin, direction);\n const planetRadiusSquared = 1.0; // planet is a unit sphere, so its radius squared is 1\n\n // Ray-sphere intersection involves a quadratic equation.\n // However solving it in the traditional schoolbook way leads to floating point precision issues.\n // Here we instead use the approach suggested in the book Ray Tracing Gems, chapter 7.\n // https://www.realtimerendering.com/raytracinggems/rtg/index.html\n const inner = createVec3f64();\n const scaledDir = createVec3f64();\n vec3.scale(scaledDir, direction, originDotDirection);\n vec3.sub(inner, origin, scaledDir);\n const discriminant = planetRadiusSquared - vec3.dot(inner, inner);\n\n if (discriminant < 0) {\n return null;\n }\n\n const c = vec3.dot(origin, origin) - planetRadiusSquared;\n const q = -originDotDirection + (originDotDirection < 0 ? 1 : -1) * Math.sqrt(discriminant);\n const t0 = c / q;\n const t1 = q;\n // Assume the ray origin is never inside the sphere\n const tMin = Math.min(t0, t1);\n const tMax = Math.max(t0, t1);\n return {\n tMin,\n tMax\n };\n }\n\n /**\n * @internal\n * Returns a {@link LngLat} representing geographical coordinates that correspond to the specified pixel coordinates.\n * Note: if the point does not lie on the globe, returns a location on the visible globe horizon (edge) that is\n * as close to the point as possible.\n * @param p - Screen point in pixels to unproject.\n * @param terrain - Optional terrain.\n */\n private unprojectScreenPoint(p: Point): LngLat {\n // Here we compute the intersection of the ray towards the pixel at `p` and the planet sphere.\n // As always, we assume that the planet is centered at 0,0,0 and has radius 1.\n // Ray origin is `_cameraPosition` and direction is `rayNormalized`.\n const rayOrigin = this._cameraPosition;\n const rayDirection = this.getRayDirectionFromPixel(p);\n const intersection = this.rayPlanetIntersection(rayOrigin, rayDirection);\n\n if (intersection) {\n // Ray intersects the sphere -> compute intersection LngLat.\n // Assume the ray origin is never inside the sphere - just use tMin\n const intersectionPoint = createVec3f64();\n vec3.add(intersectionPoint, rayOrigin, [\n rayDirection[0] * intersection.tMin,\n rayDirection[1] * intersection.tMin,\n rayDirection[2] * intersection.tMin\n ]);\n const sphereSurface = createVec3f64();\n vec3.normalize(sphereSurface, intersectionPoint);\n return sphereSurfacePointToCoordinates(sphereSurface);\n }\n\n // Ray does not intersect the sphere -> find the closest point on the horizon to the ray.\n // Intersect the ray with the clipping plane, since we know that the intersection of the clipping plane and the sphere is the horizon.\n const directionDotPlaneXyz = this._cachedClippingPlane[0] * rayDirection[0] + this._cachedClippingPlane[1] * rayDirection[1] + this._cachedClippingPlane[2] * rayDirection[2];\n const originToPlaneDistance = pointPlaneSignedDistance(this._cachedClippingPlane, rayOrigin);\n const distanceToIntersection = -originToPlaneDistance / directionDotPlaneXyz;\n\n const maxRayLength = 2.0; // One globe diameter\n const planeIntersection = createVec3f64();\n\n if (distanceToIntersection > 0) {\n vec3.add(planeIntersection, rayOrigin, [\n rayDirection[0] * distanceToIntersection,\n rayDirection[1] * distanceToIntersection,\n rayDirection[2] * distanceToIntersection\n ]);\n } else {\n // When the ray takes too long to hit the plane (>maxRayLength), or if the plane intersection is behind the camera, handle things differently.\n // Take a point along the ray at distance maxRayLength, project it to clipping plane, then continue as normal to find the horizon point.\n const distantPoint = createVec3f64();\n vec3.add(distantPoint, rayOrigin, [\n rayDirection[0] * maxRayLength,\n rayDirection[1] * maxRayLength,\n rayDirection[2] * maxRayLength\n ]);\n const distanceFromPlane = pointPlaneSignedDistance(this._cachedClippingPlane, distantPoint);\n vec3.sub(planeIntersection, distantPoint, [\n this._cachedClippingPlane[0] * distanceFromPlane,\n this._cachedClippingPlane[1] * distanceFromPlane,\n this._cachedClippingPlane[2] * distanceFromPlane\n ]);\n }\n\n const closestOnHorizon = createVec3f64();\n vec3.normalize(closestOnHorizon, planeIntersection);\n return sphereSurfacePointToCoordinates(closestOnHorizon);\n }\n\n getMatrixForModel(location: LngLatLike, altitude?: number): mat4 {\n if (!this.isGlobeRendering) {\n return this._mercatorTransform.getMatrixForModel(location, altitude);\n }\n const lnglat = LngLat.convert(location);\n const scale = 1.0 / earthRadius;\n\n const m = createIdentityMat4f64();\n mat4.rotateY(m, m, lnglat.lng / 180.0 * Math.PI);\n mat4.rotateX(m, m, -lnglat.lat / 180.0 * Math.PI);\n mat4.translate(m, m, [0, 0, 1 + altitude / earthRadius]);\n mat4.rotateX(m, m, Math.PI * 0.5);\n mat4.scale(m, m, [scale, scale, scale]);\n return m;\n }\n\n getProjectionDataForCustomLayer(applyGlobeMatrix: boolean = true): ProjectionData {\n const projectionData = this.getProjectionData({overscaledTileID: new OverscaledTileID(0, 0, 0, 0, 0), applyGlobeMatrix});\n projectionData.tileMercatorCoords = [0, 0, 1, 1];\n\n // Even though we requested projection data for the mercator base tile which covers the entire mercator range,\n // the shader projection machinery still expects inputs to be in tile units range [0..EXTENT].\n // Since custom layers are expected to supply mercator coordinates [0..1], we need to rescale\n // the fallback projection matrix by EXTENT.\n // Note that the regular projection matrices do not need to be modified, since the rescaling happens by setting\n // the `u_projection_tile_mercator_coords` uniform correctly.\n const fallbackMatrixScaled = createMat4f32();\n mat4.scale(fallbackMatrixScaled, projectionData.fallbackMatrix, [EXTENT, EXTENT, 1]);\n\n projectionData.fallbackMatrix = fallbackMatrixScaled;\n return projectionData;\n }\n\n getFastPathSimpleProjectionMatrix(tileID: OverscaledTileID): mat4 {\n if (!this.isGlobeRendering) {\n return this._mercatorTransform.getFastPathSimpleProjectionMatrix(tileID);\n }\n return undefined;\n }\n}\n","import Point from '@mapbox/point-geometry';\nimport {type IReadonlyTransform, type ITransform} from '../transform_interface';\nimport {cameraBoundsWarning, type CameraForBoxAndBearingHandlerResult, type EaseToHandlerResult, type EaseToHandlerOptions, type FlyToHandlerResult, type FlyToHandlerOptions, type ICameraHelper, type MapControlsDeltas, updateRotation, type UpdateRotationArgs} from './camera_helper';\nimport {type GlobeProjection} from './globe';\nimport {LngLat, type LngLatLike} from '../lng_lat';\nimport {MercatorCameraHelper} from './mercator_camera_helper';\nimport {angularCoordinatesToSurfaceVector, computeGlobePanCenter, getGlobeRadiusPixels, getZoomAdjustment, globeDistanceOfLocationsPixels, interpolateLngLatForGlobe} from './globe_utils';\nimport {clamp, createVec3f64, differenceOfAnglesDegrees, remapSaturate, rollPitchBearingEqual, warnOnce} from '../../util/util';\nimport {type mat4, vec3} from 'gl-matrix';\nimport {MAX_VALID_LATITUDE, normalizeCenter, scaleZoom, zoomScale} from '../transform_helper';\nimport {type CameraForBoundsOptions} from '../../ui/camera';\nimport {type LngLatBounds} from '../lng_lat_bounds';\nimport {type PaddingOptions} from '../edge_insets';\nimport {interpolates} from '@maplibre/maplibre-gl-style-spec';\n\n/**\n * @internal\n */\nexport class GlobeCameraHelper implements ICameraHelper {\n private _globe: GlobeProjection;\n private _mercatorCameraHelper: MercatorCameraHelper;\n\n constructor(globe: GlobeProjection) {\n this._globe = globe;\n this._mercatorCameraHelper = new MercatorCameraHelper();\n }\n\n get useGlobeControls(): boolean { return this._globe.useGlobeRendering; }\n\n handlePanInertia(pan: Point, transform: IReadonlyTransform): {\n easingCenter: LngLat;\n easingOffset: Point;\n } {\n if (!this.useGlobeControls) {\n return this._mercatorCameraHelper.handlePanInertia(pan, transform);\n }\n\n const panCenter = computeGlobePanCenter(pan, transform);\n if (Math.abs(panCenter.lng - transform.center.lng) > 180) {\n // If easeTo target would be over 180° distant, the animation would move\n // in the opposite direction that what the user intended.\n // Thus we clamp the movement to 179.5°.\n panCenter.lng = transform.center.lng + 179.5 * Math.sign(panCenter.lng - transform.center.lng);\n }\n return {\n easingCenter: panCenter,\n easingOffset: new Point(0, 0),\n };\n }\n\n handleMapControlsRollPitchBearingZoom(deltas: MapControlsDeltas, tr: ITransform): void {\n if (!this.useGlobeControls) {\n this._mercatorCameraHelper.handleMapControlsRollPitchBearingZoom(deltas, tr);\n return;\n }\n\n const zoomPixel = deltas.around;\n const zoomLoc = tr.screenPointToLocation(zoomPixel);\n\n if (deltas.bearingDelta) tr.setBearing(tr.bearing + deltas.bearingDelta);\n if (deltas.pitchDelta) tr.setPitch(tr.pitch + deltas.pitchDelta);\n if (deltas.rollDelta) tr.setRoll(tr.roll + deltas.rollDelta);\n const oldZoomPreZoomDelta = tr.zoom;\n if (deltas.zoomDelta) tr.setZoom(tr.zoom + deltas.zoomDelta);\n const actualZoomDelta = tr.zoom - oldZoomPreZoomDelta;\n\n if (actualZoomDelta === 0) {\n return;\n }\n\n // Problem: `setLocationAtPoint` for globe works when it is called a single time, but is a little glitchy in practice when used repeatedly for zooming.\n // - `setLocationAtPoint` repeatedly called at a location behind a pole will eventually glitch out\n // - `setLocationAtPoint` at location the longitude of which is more than 90° different from current center will eventually glitch out\n // But otherwise works fine at higher zooms, or when the target is somewhat near the current map center.\n // Solution: use a heuristic zooming in the problematic cases and interpolate to `setLocationAtPoint` when possible.\n\n // Magic numbers that control:\n // - when zoom movement slowing starts for cursor not on globe (avoid unnatural map movements)\n // - when we interpolate from exact zooming to heuristic zooming based on longitude difference of target location to current center\n // - when we interpolate from exact zooming to heuristic zooming based on globe being too small on screen\n // - when zoom movement slowing starts for globe being too small on viewport (avoids unnatural/unwanted map movements when map is zoomed out a lot)\n const raySurfaceDistanceForSlowingStart = 0.3; // Zoom movement slowing will start when the planet surface to ray distance is greater than this number (globe radius is 1, so 0.3 is ~2000km form the surface).\n const slowingMultiplier = 0.5; // The lower this value, the slower will the \"zoom movement slowing\" occur.\n const interpolateToHeuristicStartLng = 45; // When zoom location longitude is this many degrees away from map center, we start interpolating from exact zooming to heuristic zooming.\n const interpolateToHeuristicEndLng = 85; // Longitude difference at which interpolation to heuristic zooming ends.\n const interpolateToHeuristicExponent = 0.25; // Makes interpolation smoother.\n const interpolateToHeuristicStartRadius = 0.75; // When globe is this many times larger than the smaller viewport dimension, we start interpolating from exact zooming to heuristic zooming.\n const interpolateToHeuristicEndRadius = 0.35; // Globe size at which interpolation to heuristic zooming ends.\n const slowingRadiusStart = 0.9; // If globe is this many times larger than the smaller viewport dimension, start inhibiting map movement while zooming\n const slowingRadiusStop = 0.5;\n const slowingRadiusSlowFactor = 0.25; // How much is movement slowed when globe is too small\n\n const dLngRaw = differenceOfAnglesDegrees(tr.center.lng, zoomLoc.lng);\n const dLng = dLngRaw / (Math.abs(dLngRaw / 180) + 1.0); // This gradually reduces the amount of longitude change if the zoom location is very far, eg. on the other side of the pole (possible when looking at a pole).\n const dLat = differenceOfAnglesDegrees(tr.center.lat, zoomLoc.lat);\n\n // Slow zoom movement down if the mouse ray is far from the planet.\n const rayDirection = tr.getRayDirectionFromPixel(zoomPixel);\n const rayOrigin = tr.cameraPosition;\n const distanceToClosestPoint = vec3.dot(rayOrigin, rayDirection) * -1; // Globe center relative to ray origin is equal to -rayOrigin and rayDirection is normalized, thus we want to compute dot(-rayOrigin, rayDirection).\n const closestPoint = createVec3f64();\n vec3.add(closestPoint, rayOrigin, [\n rayDirection[0] * distanceToClosestPoint,\n rayDirection[1] * distanceToClosestPoint,\n rayDirection[2] * distanceToClosestPoint\n ]);\n const distanceFromSurface = vec3.length(closestPoint) - 1;\n const distanceFactor = Math.exp(-Math.max(distanceFromSurface - raySurfaceDistanceForSlowingStart, 0) * slowingMultiplier);\n\n // Slow zoom movement down if the globe is too small on viewport\n const radius = getGlobeRadiusPixels(tr.worldSize, tr.center.lat) / Math.min(tr.width, tr.height); // Radius relative to larger viewport dimension\n const radiusFactor = remapSaturate(radius, slowingRadiusStart, slowingRadiusStop, 1.0, slowingRadiusSlowFactor);\n\n // Compute how much to move towards the zoom location\n const factor = (1.0 - zoomScale(-actualZoomDelta)) * Math.min(distanceFactor, radiusFactor);\n\n const oldCenterLat = tr.center.lat;\n const oldZoom = tr.zoom;\n const heuristicCenter = new LngLat(\n tr.center.lng + dLng * factor,\n clamp(tr.center.lat + dLat * factor, -MAX_VALID_LATITUDE, MAX_VALID_LATITUDE)\n );\n\n // Now compute the map center exact zoom\n tr.setLocationAtPoint(zoomLoc, zoomPixel);\n const exactCenter = tr.center;\n\n // Interpolate between exact zooming and heuristic zooming depending on the longitude difference between current center and zoom location.\n const interpolationFactorLongitude = remapSaturate(Math.abs(dLngRaw), interpolateToHeuristicStartLng, interpolateToHeuristicEndLng, 0, 1);\n const interpolationFactorRadius = remapSaturate(radius, interpolateToHeuristicStartRadius, interpolateToHeuristicEndRadius, 0, 1);\n const heuristicFactor = Math.pow(Math.max(interpolationFactorLongitude, interpolationFactorRadius), interpolateToHeuristicExponent);\n\n const lngExactToHeuristic = differenceOfAnglesDegrees(exactCenter.lng, heuristicCenter.lng);\n const latExactToHeuristic = differenceOfAnglesDegrees(exactCenter.lat, heuristicCenter.lat);\n\n tr.setCenter(new LngLat(\n exactCenter.lng + lngExactToHeuristic * heuristicFactor,\n exactCenter.lat + latExactToHeuristic * heuristicFactor\n ).wrap());\n tr.setZoom(oldZoom + getZoomAdjustment(oldCenterLat, tr.center.lat));\n }\n\n handleMapControlsPan(deltas: MapControlsDeltas, tr: ITransform, preZoomAroundLoc: LngLat): void {\n if (!this.useGlobeControls) {\n this._mercatorCameraHelper.handleMapControlsPan(deltas, tr, preZoomAroundLoc);\n return;\n }\n\n if (!deltas.panDelta) {\n return;\n }\n\n // These are actually very similar to mercator controls, and should converge to them at high zooms.\n // We avoid using the \"grab a place and move it around\" approach from mercator here,\n // since it is not a very pleasant way to pan a globe.\n const oldLat = tr.center.lat;\n const oldZoom = tr.zoom;\n tr.setCenter(computeGlobePanCenter(deltas.panDelta, tr).wrap());\n // Setting the center might adjust zoom to keep globe size constant, we need to avoid adding this adjustment a second time\n tr.setZoom(oldZoom + getZoomAdjustment(oldLat, tr.center.lat));\n }\n\n cameraForBoxAndBearing(options: CameraForBoundsOptions, padding: PaddingOptions, bounds: LngLatBounds, bearing: number, tr: ITransform): CameraForBoxAndBearingHandlerResult {\n const result = this._mercatorCameraHelper.cameraForBoxAndBearing(options, padding, bounds, bearing, tr);\n\n if (!this.useGlobeControls) {\n return result;\n }\n\n // If globe is enabled, we use the parameters computed for mercator, and just update the zoom to fit the bounds.\n\n // Get clip space bounds including padding\n const xLeft = (padding.left) / tr.width * 2.0 - 1.0;\n const xRight = (tr.width - padding.right) / tr.width * 2.0 - 1.0;\n const yTop = (padding.top) / tr.height * -2.0 + 1.0;\n const yBottom = (tr.height - padding.bottom) / tr.height * -2.0 + 1.0;\n\n // Get camera bounds\n const flipEastWest = differenceOfAnglesDegrees(bounds.getWest(), bounds.getEast()) < 0;\n const lngWest = flipEastWest ? bounds.getEast() : bounds.getWest();\n const lngEast = flipEastWest ? bounds.getWest() : bounds.getEast();\n\n const latNorth = Math.max(bounds.getNorth(), bounds.getSouth()); // \"getNorth\" doesn't always return north...\n const latSouth = Math.min(bounds.getNorth(), bounds.getSouth());\n\n // Additional vectors will be tested for the rectangle midpoints\n const lngMid = lngWest + differenceOfAnglesDegrees(lngWest, lngEast) * 0.5;\n const latMid = latNorth + differenceOfAnglesDegrees(latNorth, latSouth) * 0.5;\n\n // Obtain a globe projection matrix that does not include pitch (unsupported)\n const clonedTr = tr.clone();\n clonedTr.setCenter(result.center);\n clonedTr.setBearing(result.bearing);\n clonedTr.setPitch(0);\n clonedTr.setRoll(0);\n clonedTr.setZoom(result.zoom);\n const matrix = clonedTr.modelViewProjectionMatrix;\n\n // Vectors to test - the bounds' corners and edge midpoints\n const testVectors = [\n angularCoordinatesToSurfaceVector(bounds.getNorthWest()),\n angularCoordinatesToSurfaceVector(bounds.getNorthEast()),\n angularCoordinatesToSurfaceVector(bounds.getSouthWest()),\n angularCoordinatesToSurfaceVector(bounds.getSouthEast()),\n // Also test edge midpoints\n angularCoordinatesToSurfaceVector(new LngLat(lngEast, latMid)),\n angularCoordinatesToSurfaceVector(new LngLat(lngWest, latMid)),\n angularCoordinatesToSurfaceVector(new LngLat(lngMid, latNorth)),\n angularCoordinatesToSurfaceVector(new LngLat(lngMid, latSouth))\n ];\n const vecToCenter = angularCoordinatesToSurfaceVector(result.center);\n\n // Test each vector, measure how much to scale down the globe to satisfy all tested points that they are inside clip space.\n let smallestNeededScale = Number.POSITIVE_INFINITY;\n for (const vec of testVectors) {\n if (xLeft < 0)\n smallestNeededScale = GlobeCameraHelper.getLesserNonNegativeNonNull(smallestNeededScale, GlobeCameraHelper.solveVectorScale(vec, vecToCenter, matrix, 'x', xLeft));\n if (xRight > 0)\n smallestNeededScale = GlobeCameraHelper.getLesserNonNegativeNonNull(smallestNeededScale, GlobeCameraHelper.solveVectorScale(vec, vecToCenter, matrix, 'x', xRight));\n if (yTop > 0)\n smallestNeededScale = GlobeCameraHelper.getLesserNonNegativeNonNull(smallestNeededScale, GlobeCameraHelper.solveVectorScale(vec, vecToCenter, matrix, 'y', yTop));\n if (yBottom < 0)\n smallestNeededScale = GlobeCameraHelper.getLesserNonNegativeNonNull(smallestNeededScale, GlobeCameraHelper.solveVectorScale(vec, vecToCenter, matrix, 'y', yBottom));\n }\n\n if (!Number.isFinite(smallestNeededScale) || smallestNeededScale === 0) {\n cameraBoundsWarning();\n return undefined;\n }\n\n // Compute target zoom from the obtained scale.\n result.zoom = clonedTr.zoom + scaleZoom(smallestNeededScale);\n return result;\n }\n\n /**\n * Handles the zoom and center change during camera jumpTo.\n */\n handleJumpToCenterZoom(tr: ITransform, options: { zoom?: number; center?: LngLatLike }): void {\n if (!this.useGlobeControls) {\n this._mercatorCameraHelper.handleJumpToCenterZoom(tr, options);\n return;\n }\n\n // Special zoom & center handling for globe:\n // Globe constrained center isn't dependent on zoom level\n const startingLat = tr.center.lat;\n const constrainedCenter = tr.getConstrained(options.center ? LngLat.convert(options.center) : tr.center, tr.zoom).center;\n tr.setCenter(constrainedCenter.wrap());\n\n // Make sure to compute correct target zoom level if no zoom is specified\n const targetZoom = (typeof options.zoom !== 'undefined') ? +options.zoom : (tr.zoom + getZoomAdjustment(startingLat, constrainedCenter.lat));\n if (tr.zoom !== targetZoom) {\n tr.setZoom(targetZoom);\n }\n }\n\n handleEaseTo(tr: ITransform, options: EaseToHandlerOptions): EaseToHandlerResult {\n if (!this.useGlobeControls) {\n return this._mercatorCameraHelper.handleEaseTo(tr, options);\n }\n\n const startZoom = tr.zoom;\n const startCenter = tr.center;\n const startEulerAngles = {roll: tr.roll, pitch: tr.pitch, bearing: tr.bearing};\n const endRoll = options.roll === undefined ? tr.roll : options.roll;\n const endPitch = options.pitch === undefined ? tr.pitch : options.pitch;\n const endBearing = options.bearing === undefined ? tr.bearing : options.bearing;\n const endEulerAngles = {roll: endRoll, pitch: endPitch, bearing: endBearing};\n\n const optionsZoom = typeof options.zoom !== 'undefined';\n\n const doPadding = !tr.isPaddingEqual(options.padding);\n\n let isZooming = false;\n\n // Globe needs special handling for how zoom should be animated.\n // 1) if zoom is set, ease to the given mercator zoom\n // 2) if neither is set, assume constant apparent zoom (constant planet size) is to be kept\n const preConstrainCenter = options.center ?\n LngLat.convert(options.center) :\n startCenter;\n const constrainedCenter = tr.getConstrained(\n preConstrainCenter,\n startZoom // zoom can be whatever at this stage, it should not affect anything if globe is enabled\n ).center;\n normalizeCenter(tr, constrainedCenter);\n\n const clonedTr = tr.clone();\n clonedTr.setCenter(constrainedCenter);\n if (doPadding) {\n clonedTr.setPadding(options.padding);\n }\n clonedTr.setZoom(optionsZoom ?\n +options.zoom :\n startZoom + getZoomAdjustment(startCenter.lat, preConstrainCenter.lat));\n clonedTr.setBearing(options.bearing);\n const clampedPoint = new Point(\n clamp(tr.centerPoint.x + options.offsetAsPoint.x, 0, tr.width),\n clamp(tr.centerPoint.y + options.offsetAsPoint.y, 0, tr.height)\n );\n clonedTr.setLocationAtPoint(constrainedCenter, clampedPoint);\n // Find final animation targets\n const endCenterWithShift = (options.offset && options.offsetAsPoint.mag()) > 0 ? clonedTr.center : constrainedCenter;\n const endZoomWithShift = optionsZoom ?\n +options.zoom :\n startZoom + getZoomAdjustment(startCenter.lat, endCenterWithShift.lat);\n\n // Planet radius for a given zoom level differs according to latitude\n // Convert zooms to what they would be at equator for the given planet radius\n const normalizedStartZoom = startZoom + getZoomAdjustment(startCenter.lat, 0);\n const normalizedEndZoom = endZoomWithShift + getZoomAdjustment(endCenterWithShift.lat, 0);\n const deltaLng = differenceOfAnglesDegrees(startCenter.lng, endCenterWithShift.lng);\n const deltaLat = differenceOfAnglesDegrees(startCenter.lat, endCenterWithShift.lat);\n\n const finalScale = zoomScale(normalizedEndZoom - normalizedStartZoom);\n isZooming = (endZoomWithShift !== startZoom);\n\n const easeFunc = (k: number) => {\n if (!rollPitchBearingEqual(startEulerAngles, endEulerAngles)) {\n updateRotation({\n startEulerAngles,\n endEulerAngles,\n tr,\n k,\n useSlerp: startEulerAngles.roll != endEulerAngles.roll} as UpdateRotationArgs);\n }\n\n if (options.around) {\n warnOnce('Easing around a point is not supported under globe projection.');\n tr.setLocationAtPoint(options.around, options.aroundPoint);\n } else {\n const base = normalizedEndZoom > normalizedStartZoom ?\n Math.min(2, finalScale) :\n Math.max(0.5, finalScale);\n const speedup = Math.pow(base, 1 - k);\n const factor = k * speedup;\n\n // Spherical lerp might be used here instead, but that was tested and it leads to very weird paths when the interpolated arc gets near the poles.\n // Instead we interpolate LngLat almost directly, but taking into account that\n // one degree of longitude gets progressively smaller relative to latitude towards the poles.\n const newCenter = interpolateLngLatForGlobe(startCenter, deltaLng, deltaLat, factor);\n tr.setCenter(newCenter.wrap());\n }\n\n if (isZooming) {\n const normalizedInterpolatedZoom = interpolates.number(normalizedStartZoom, normalizedEndZoom, k);\n const interpolatedZoom = normalizedInterpolatedZoom + getZoomAdjustment(0, tr.center.lat);\n tr.setZoom(interpolatedZoom);\n }\n };\n\n return {\n easeFunc,\n isZooming,\n elevationCenter: endCenterWithShift,\n };\n }\n\n handleFlyTo(tr: ITransform, options: FlyToHandlerOptions): FlyToHandlerResult {\n if (!this.useGlobeControls) {\n return this._mercatorCameraHelper.handleFlyTo(tr, options);\n }\n const optionsZoom = typeof options.zoom !== 'undefined';\n\n const startCenter = tr.center;\n const startZoom = tr.zoom;\n const doPadding = !tr.isPaddingEqual(options.padding);\n\n // Obtain target center and zoom\n const constrainedCenter = tr.getConstrained(\n LngLat.convert(options.center || options.locationAtOffset),\n startZoom\n ).center;\n const targetZoom = optionsZoom ? +options.zoom : tr.zoom + getZoomAdjustment(tr.center.lat, constrainedCenter.lat);\n\n // Compute target center that respects offset by creating a temporary transform and calling its `setLocationAtPoint`.\n const clonedTr = tr.clone();\n clonedTr.setCenter(constrainedCenter);\n if (doPadding) {\n clonedTr.setPadding(options.padding as PaddingOptions);\n }\n clonedTr.setZoom(targetZoom);\n clonedTr.setBearing(options.bearing);\n const clampedPoint = new Point(\n clamp(tr.centerPoint.x + options.offsetAsPoint.x, 0, tr.width),\n clamp(tr.centerPoint.y + options.offsetAsPoint.y, 0, tr.height)\n );\n clonedTr.setLocationAtPoint(constrainedCenter, clampedPoint);\n const targetCenter = clonedTr.center;\n\n normalizeCenter(tr, targetCenter);\n\n const pixelPathLength = globeDistanceOfLocationsPixels(tr, startCenter, targetCenter);\n\n const normalizedStartZoom = startZoom + getZoomAdjustment(startCenter.lat, 0);\n const normalizedTargetZoom = targetZoom + getZoomAdjustment(targetCenter.lat, 0);\n const scaleOfZoom = zoomScale(normalizedTargetZoom - normalizedStartZoom);\n\n const optionsMinZoom = typeof options.minZoom === 'number';\n\n let scaleOfMinZoom: number;\n\n if (optionsMinZoom) {\n const normalizedOptionsMinZoom = +options.minZoom + getZoomAdjustment(targetCenter.lat, 0);\n const normalizedMinZoomPreConstrain = Math.min(normalizedOptionsMinZoom, normalizedStartZoom, normalizedTargetZoom);\n const minZoomPreConstrain = normalizedMinZoomPreConstrain + getZoomAdjustment(0, targetCenter.lat);\n const minZoom = tr.getConstrained(targetCenter, minZoomPreConstrain).zoom;\n const normalizedMinZoom = minZoom + getZoomAdjustment(targetCenter.lat, 0);\n scaleOfMinZoom = zoomScale(normalizedMinZoom - normalizedStartZoom);\n }\n\n const deltaLng = differenceOfAnglesDegrees(startCenter.lng, targetCenter.lng);\n const deltaLat = differenceOfAnglesDegrees(startCenter.lat, targetCenter.lat);\n\n const easeFunc = (k: number, scale: number, centerFactor: number, _pointAtOffset: Point) => {\n const interpolatedCenter = interpolateLngLatForGlobe(startCenter, deltaLng, deltaLat, centerFactor);\n\n const newCenter = k === 1 ? targetCenter : interpolatedCenter;\n tr.setCenter(newCenter.wrap());\n\n const interpolatedZoom = normalizedStartZoom + scaleZoom(scale);\n tr.setZoom(k === 1 ? targetZoom : (interpolatedZoom + getZoomAdjustment(0, newCenter.lat)));\n };\n\n return {\n easeFunc,\n scaleOfZoom,\n targetCenter,\n scaleOfMinZoom,\n pixelPathLength,\n };\n }\n\n /**\n * Computes how much to scale the globe in order for a given point on its surface (a location) to project to a given clip space coordinate in either the X or the Y axis.\n * @param vector - Position of the queried location on the surface of the unit sphere globe.\n * @param toCenter - Position of current transform center on the surface of the unit sphere globe.\n * This is needed because zooming the globe not only changes its scale,\n * but also moves the camera closer or further away along this vector (pitch is disregarded).\n * @param projection - The globe projection matrix.\n * @param targetDimension - The dimension in which the scaled vector must match the target value in clip space.\n * @param targetValue - The target clip space value in the specified dimension to which the queried vector must project.\n * @returns How much to scale the globe.\n */\n private static solveVectorScale(vector: vec3, toCenter: vec3, projection: mat4, targetDimension: 'x' | 'y', targetValue: number): number | null {\n // We want to compute how much to scale the sphere in order for the input `vector` to project to `targetValue` in the given `targetDimension` (X or Y).\n const k = targetValue;\n const columnXorY = targetDimension === 'x' ?\n [projection[0], projection[4], projection[8], projection[12]] : // X\n [projection[1], projection[5], projection[9], projection[13]]; // Y\n const columnZ = [projection[3], projection[7], projection[11], projection[15]];\n\n const vecDotXY = vector[0] * columnXorY[0] + vector[1] * columnXorY[1] + vector[2] * columnXorY[2];\n const vecDotZ = vector[0] * columnZ[0] + vector[1] * columnZ[1] + vector[2] * columnZ[2];\n const toCenterDotXY = toCenter[0] * columnXorY[0] + toCenter[1] * columnXorY[1] + toCenter[2] * columnXorY[2];\n const toCenterDotZ = toCenter[0] * columnZ[0] + toCenter[1] * columnZ[1] + toCenter[2] * columnZ[2];\n\n // The following can be derived from writing down what happens to a vector scaled by a parameter (\"V * t\") when it is multiplied by a projection matrix, then solving for \"t\".\n // Or rather, we derive it for a vector \"V * t + (1-t) * C\". Where V is `vector` and C is `toCenter`. The extra addition is needed because zooming out also moves the camera along \"C\".\n\n const t = (toCenterDotXY + columnXorY[3] - k * toCenterDotZ - k * columnZ[3]) / (toCenterDotXY - vecDotXY - k * toCenterDotZ + k * vecDotZ);\n\n if (\n toCenterDotXY + k * vecDotZ === vecDotXY + k * toCenterDotZ ||\n columnZ[3] * (vecDotXY - toCenterDotXY) + columnXorY[3] * (toCenterDotZ - vecDotZ) + vecDotXY * toCenterDotZ === toCenterDotXY * vecDotZ\n ) {\n // The computed result is invalid.\n return null;\n }\n return t;\n }\n\n /**\n * Returns `newValue` if it is:\n *\n * - not null AND\n * - not negative AND\n * - smaller than `newValue`,\n *\n * ...otherwise returns `oldValue`.\n */\n private static getLesserNonNegativeNonNull(oldValue: number, newValue: number): number {\n if (newValue !== null && newValue >= 0 && newValue < oldValue) {\n return newValue;\n } else {\n return oldValue;\n }\n }\n}\n","import {Event, ErrorEvent, Evented} from '../util/evented';\nimport {type StyleLayer} from './style_layer';\nimport {createStyleLayer} from './create_style_layer';\nimport {loadSprite} from './load_sprite';\nimport {ImageManager} from '../render/image_manager';\nimport {GlyphManager} from '../render/glyph_manager';\nimport {Light} from './light';\nimport {Sky} from './sky';\nimport {LineAtlas} from '../render/line_atlas';\nimport {clone, extend, deepEqual, filterObject, mapObject} from '../util/util';\nimport {coerceSpriteToArray} from '../util/style';\nimport {getJSON, getReferrer} from '../util/ajax';\nimport {ResourceType} from '../util/request_manager';\nimport {browser} from '../util/browser';\nimport {Dispatcher} from '../util/dispatcher';\nimport {validateStyle, emitValidationErrors as _emitValidationErrors} from './validate_style';\nimport {type Source} from '../source/source';\nimport {type QueryRenderedFeaturesOptions, type QueryRenderedFeaturesOptionsStrict, type QuerySourceFeatureOptions, queryRenderedFeatures, queryRenderedSymbols, querySourceFeatures} from '../source/query_features';\nimport {SourceCache} from '../source/source_cache';\nimport {type GeoJSONSource} from '../source/geojson_source';\nimport {latest as styleSpec, derefLayers as deref, emptyStyle, diff as diffStyles, type DiffCommand} from '@maplibre/maplibre-gl-style-spec';\nimport {getGlobalWorkerPool} from '../util/global_worker_pool';\nimport {rtlMainThreadPluginFactory} from '../source/rtl_text_plugin_main_thread';\nimport {RTLPluginLoadedEventName} from '../source/rtl_text_plugin_status';\nimport {PauseablePlacement} from './pauseable_placement';\nimport {ZoomHistory} from './zoom_history';\nimport {CrossTileSymbolIndex} from '../symbol/cross_tile_symbol_index';\nimport {validateCustomStyleLayer} from './style_layer/custom_style_layer';\nimport type {MapGeoJSONFeature} from '../util/vectortile_to_geojson';\n\n// We're skipping validation errors with the `source.canvas` identifier in order\n// to continue to allow canvas sources to be added at runtime/updated in\n// smart setStyle (see https://github.com/mapbox/mapbox-gl-js/pull/6424):\nconst emitValidationErrors = (evented: Evented, errors?: ReadonlyArray<{\n message: string;\n identifier?: string;\n}> | null) =>\n _emitValidationErrors(evented, errors && errors.filter(error => error.identifier !== 'source.canvas'));\n\nimport type {Map} from '../ui/map';\nimport type {IReadonlyTransform, ITransform} from '../geo/transform_interface';\nimport type {StyleImage} from './style_image';\nimport type {EvaluationParameters} from './evaluation_parameters';\nimport type {Placement} from '../symbol/placement';\nimport type {\n LayerSpecification,\n FilterSpecification,\n StyleSpecification,\n LightSpecification,\n SourceSpecification,\n SpriteSpecification,\n DiffOperations,\n ProjectionSpecification,\n SkySpecification\n} from '@maplibre/maplibre-gl-style-spec';\nimport type {CanvasSourceSpecification} from '../source/canvas_source';\nimport type {CustomLayerInterface} from './style_layer/custom_style_layer';\nimport type {Validator} from './validate_style';\nimport {\n MessageType,\n type GetGlyphsParameters,\n type GetGlyphsResponse,\n type GetImagesParameters,\n type GetImagesResponse\n} from '../util/actor_messages';\nimport {type Projection} from '../geo/projection/projection';\nimport {createProjectionFromName} from '../geo/projection/projection_factory';\n\nconst empty = emptyStyle() as StyleSpecification;\n/**\n * A feature identifier that is bound to a source\n */\nexport type FeatureIdentifier = {\n /**\n * Unique id of the feature.\n */\n id?: string | number | undefined;\n /**\n * The id of the vector or GeoJSON source for the feature.\n */\n source: string;\n /**\n * *For vector tile sources, `sourceLayer` is required.*\n */\n sourceLayer?: string | undefined;\n};\n\n/**\n * The options object related to the {@link Map}'s style related methods\n */\nexport type StyleOptions = {\n /**\n * If false, style validation will be skipped. Useful in production environment.\n */\n validate?: boolean;\n /**\n * Defines a CSS\n * font-family for locally overriding generation of Chinese, Japanese, and Korean characters.\n * For these characters, font settings from the map's style will be ignored, except for font-weight keywords (light/regular/medium/bold).\n * Set to `false`, to enable font settings from the map's style for these glyph ranges.\n * Forces a full update.\n */\n localIdeographFontFamily?: string | false;\n};\n\n/**\n * Supporting type to add validation to another style related type\n */\nexport type StyleSetterOptions = {\n /**\n * Whether to check if the filter conforms to the MapLibre Style Specification. Disabling validation is a performance optimization that should only be used if you have previously validated the values you will be passing to this function.\n */\n validate?: boolean;\n};\n\n/**\n * Part of {@link Map#setStyle} options, transformStyle is a convenience function that allows to modify a style after it is fetched but before it is committed to the map state.\n *\n * This function exposes previous and next styles, it can be commonly used to support a range of functionalities like:\n *\n * - when previous style carries certain 'state' that needs to be carried over to a new style gracefully;\n * - when a desired style is a certain combination of previous and incoming style;\n * - when an incoming style requires modification based on external state.\n * - when an incoming style uses relative paths, which need to be converted to absolute.\n *\n * @param previous - The current style.\n * @param next - The next style.\n * @returns resulting style that will to be applied to the map\n *\n * @example\n * ```ts\n * map.setStyle('https://demotiles.maplibre.org/style.json', {\n * transformStyle: (previousStyle, nextStyle) => ({\n * ...nextStyle,\n * // make relative sprite path like \"../sprite\" absolute\n * sprite: new URL(nextStyle.sprite, \"https://demotiles.maplibre.org/styles/osm-bright-gl-style/sprites/\").href,\n * // make relative glyphs path like \"../fonts/{fontstack}/{range}.pbf\" absolute\n * glyphs: new URL(nextStyle.glyphs, \"https://demotiles.maplibre.org/font/\").href,\n * sources: {\n * // make relative vector url like \"../../\" absolute\n * ...nextStyle.sources.map(source => {\n * if (source.url) {\n * source.url = new URL(source.url, \"https://api.maptiler.com/tiles/osm-bright-gl-style/\");\n * }\n * return source;\n * }),\n * // copy a source from previous style\n * 'osm': previousStyle.sources.osm\n * },\n * layers: [\n * // background layer\n * nextStyle.layers[0],\n * // copy a layer from previous style\n * previousStyle.layers[0],\n * // other layers from the next style\n * ...nextStyle.layers.slice(1).map(layer => {\n * // hide the layers we don't need from demotiles style\n * if (layer.id.startsWith('geolines')) {\n * layer.layout = {...layer.layout || {}, visibility: 'none'};\n * // filter out US polygons\n * } else if (layer.id.startsWith('coastline') || layer.id.startsWith('countries')) {\n * layer.filter = ['!=', ['get', 'ADM0_A3'], 'USA'];\n * }\n * return layer;\n * })\n * ]\n * })\n * });\n * ```\n */\nexport type TransformStyleFunction = (previous: StyleSpecification | undefined, next: StyleSpecification) => StyleSpecification;\n\n/**\n * The options object related to the {@link Map}'s style related methods\n */\nexport type StyleSwapOptions = {\n /**\n * If false, force a 'full' update, removing the current style\n * and building the given one instead of attempting a diff-based update.\n */\n diff?: boolean;\n /**\n * TransformStyleFunction is a convenience function\n * that allows to modify a style after it is fetched but before it is committed to the map state. Refer to {@link TransformStyleFunction}.\n */\n transformStyle?: TransformStyleFunction;\n}\n\n/**\n * Specifies a layer to be added to a {@link Style}. In addition to a standard {@link LayerSpecification}\n * or a {@link CustomLayerInterface}, a {@link LayerSpecification} with an embedded {@link SourceSpecification} can also be provided.\n */\nexport type AddLayerObject = LayerSpecification | (Omit & {source: SourceSpecification}) | CustomLayerInterface;\n\n/**\n * The Style base class\n */\nexport class Style extends Evented {\n map: Map;\n stylesheet: StyleSpecification;\n dispatcher: Dispatcher;\n imageManager: ImageManager;\n glyphManager: GlyphManager;\n lineAtlas: LineAtlas;\n light: Light;\n projection: Projection;\n sky: Sky;\n\n _frameRequest: AbortController;\n _loadStyleRequest: AbortController;\n _spriteRequest: AbortController;\n _layers: {[_: string]: StyleLayer};\n _serializedLayers: {[_: string]: LayerSpecification};\n _order: Array;\n sourceCaches: {[_: string]: SourceCache};\n zoomHistory: ZoomHistory;\n _loaded: boolean;\n _changed: boolean;\n _updatedSources: {[_: string]: 'clear' | 'reload'};\n _updatedLayers: {[_: string]: true};\n _removedLayers: {[_: string]: StyleLayer};\n _changedImages: {[_: string]: true};\n _glyphsDidChange: boolean;\n _updatedPaintProps: {[layer: string]: true};\n _layerOrderChanged: boolean;\n // image ids of images loaded from style's sprite\n _spritesImagesIds: {[spriteId: string]: string[]};\n // image ids of all images loaded (sprite + user)\n _availableImages: Array;\n\n crossTileSymbolIndex: CrossTileSymbolIndex;\n pauseablePlacement: PauseablePlacement;\n placement: Placement;\n z: number;\n\n constructor(map: Map, options: StyleOptions = {}) {\n super();\n\n this.map = map;\n this.dispatcher = new Dispatcher(getGlobalWorkerPool(), map._getMapId());\n this.dispatcher.registerMessageHandler(MessageType.getGlyphs, (mapId, params) => {\n return this.getGlyphs(mapId, params);\n });\n this.dispatcher.registerMessageHandler(MessageType.getImages, (mapId, params) => {\n return this.getImages(mapId, params);\n });\n this.imageManager = new ImageManager();\n this.imageManager.setEventedParent(this);\n this.glyphManager = new GlyphManager(map._requestManager, options.localIdeographFontFamily);\n this.lineAtlas = new LineAtlas(256, 512);\n this.crossTileSymbolIndex = new CrossTileSymbolIndex();\n\n this._spritesImagesIds = {};\n this._layers = {};\n\n this._order = [];\n this.sourceCaches = {};\n this.zoomHistory = new ZoomHistory();\n this._loaded = false;\n this._availableImages = [];\n\n this._resetUpdates();\n\n this.dispatcher.broadcast(MessageType.setReferrer, getReferrer());\n rtlMainThreadPluginFactory().on(RTLPluginLoadedEventName, this._rtlPluginLoaded);\n\n this.on('data', (event) => {\n if (event.dataType !== 'source' || event.sourceDataType !== 'metadata') {\n return;\n }\n\n const sourceCache = this.sourceCaches[event.sourceId];\n if (!sourceCache) {\n return;\n }\n\n const source = sourceCache.getSource();\n if (!source || !source.vectorLayerIds) {\n return;\n }\n\n for (const layerId in this._layers) {\n const layer = this._layers[layerId];\n if (layer.source === source.id) {\n this._validateLayer(layer);\n }\n }\n });\n }\n\n _rtlPluginLoaded = () => {\n for (const id in this.sourceCaches) {\n const sourceType = this.sourceCaches[id].getSource().type;\n if (sourceType === 'vector' || sourceType === 'geojson') {\n // Non-vector sources don't have any symbols buckets to reload when the RTL text plugin loads\n // They also load more quickly, so they're more likely to have already displaying tiles\n // that would be unnecessarily booted by the plugin load event\n this.sourceCaches[id].reload(); // Should be a no-op if the plugin loads before any tiles load\n }\n }\n };\n\n loadURL(url: string, options: StyleSwapOptions & StyleSetterOptions = {}, previousStyle?: StyleSpecification) {\n this.fire(new Event('dataloading', {dataType: 'style'}));\n\n options.validate = typeof options.validate === 'boolean' ?\n options.validate : true;\n\n const request = this.map._requestManager.transformRequest(url, ResourceType.Style);\n this._loadStyleRequest = new AbortController();\n const abortController = this._loadStyleRequest;\n getJSON(request, this._loadStyleRequest).then((response) => {\n this._loadStyleRequest = null;\n this._load(response.data, options, previousStyle);\n }).catch((error) => {\n this._loadStyleRequest = null;\n if (error && !abortController.signal.aborted) { // ignore abort\n this.fire(new ErrorEvent(error));\n }\n });\n }\n\n loadJSON(json: StyleSpecification, options: StyleSetterOptions & StyleSwapOptions = {}, previousStyle?: StyleSpecification) {\n this.fire(new Event('dataloading', {dataType: 'style'}));\n\n this._frameRequest = new AbortController();\n browser.frameAsync(this._frameRequest).then(() => {\n this._frameRequest = null;\n options.validate = options.validate !== false;\n this._load(json, options, previousStyle);\n }).catch(() => {}); // ignore abort\n }\n\n loadEmpty() {\n this.fire(new Event('dataloading', {dataType: 'style'}));\n this._load(empty, {validate: false});\n }\n\n _load(json: StyleSpecification, options: StyleSwapOptions & StyleSetterOptions, previousStyle?: StyleSpecification) {\n const nextState = options.transformStyle ? options.transformStyle(previousStyle, json) : json;\n if (options.validate && emitValidationErrors(this, validateStyle(nextState))) {\n return;\n }\n\n this._loaded = true;\n this.stylesheet = nextState;\n\n for (const id in nextState.sources) {\n this.addSource(id, nextState.sources[id], {validate: false});\n }\n\n if (nextState.sprite) {\n this._loadSprite(nextState.sprite);\n } else {\n this.imageManager.setLoaded(true);\n }\n\n this.glyphManager.setURL(nextState.glyphs);\n this._createLayers();\n\n this.light = new Light(this.stylesheet.light);\n this._setProjectionInternal(this.stylesheet.projection?.type || 'mercator');\n\n this.sky = new Sky(this.stylesheet.sky);\n\n this.map.setTerrain(this.stylesheet.terrain ?? null);\n\n this.fire(new Event('data', {dataType: 'style'}));\n this.fire(new Event('style.load'));\n }\n\n private _createLayers() {\n const dereferencedLayers = deref(this.stylesheet.layers);\n\n // Broadcast layers to workers first, so that expensive style processing (createStyleLayer)\n // can happen in parallel on both main and worker threads.\n this.dispatcher.broadcast(MessageType.setLayers, dereferencedLayers);\n\n this._order = dereferencedLayers.map((layer) => layer.id);\n this._layers = {};\n\n // reset serialization field, to be populated only when needed\n this._serializedLayers = null;\n for (const layer of dereferencedLayers) {\n const styledLayer = createStyleLayer(layer);\n styledLayer.setEventedParent(this, {layer: {id: layer.id}});\n this._layers[layer.id] = styledLayer;\n }\n }\n\n _loadSprite(sprite: SpriteSpecification, isUpdate: boolean = false, completion: (err: Error) => void = undefined) {\n this.imageManager.setLoaded(false);\n\n this._spriteRequest = new AbortController();\n let err: Error;\n loadSprite(sprite, this.map._requestManager, this.map.getPixelRatio(), this._spriteRequest).then((images) => {\n this._spriteRequest = null;\n if (images) {\n for (const spriteId in images) {\n this._spritesImagesIds[spriteId] = [];\n\n // remove old sprite's loaded images (for the same sprite id) that are not in new sprite\n const imagesToRemove = this._spritesImagesIds[spriteId] ? this._spritesImagesIds[spriteId].filter(id => !(id in images)) : [];\n for (const id of imagesToRemove) {\n this.imageManager.removeImage(id);\n this._changedImages[id] = true;\n }\n\n for (const id in images[spriteId]) {\n // don't prefix images of the \"default\" sprite\n const imageId = spriteId === 'default' ? id : `${spriteId}:${id}`;\n // save all the sprite's images' ids to be able to delete them in `removeSprite`\n this._spritesImagesIds[spriteId].push(imageId);\n if (imageId in this.imageManager.images) {\n this.imageManager.updateImage(imageId, images[spriteId][id], false);\n } else {\n this.imageManager.addImage(imageId, images[spriteId][id]);\n }\n\n if (isUpdate) {\n this._changedImages[imageId] = true;\n }\n }\n }\n }\n }).catch((error) => {\n this._spriteRequest = null;\n err = error;\n this.fire(new ErrorEvent(err));\n }).finally(() => {\n this.imageManager.setLoaded(true);\n this._availableImages = this.imageManager.listImages();\n\n if (isUpdate) {\n this._changed = true;\n }\n\n this.dispatcher.broadcast(MessageType.setImages, this._availableImages);\n this.fire(new Event('data', {dataType: 'style'}));\n\n if (completion) {\n completion(err);\n }\n });\n }\n\n _unloadSprite() {\n for (const id of Object.values(this._spritesImagesIds).flat()) {\n this.imageManager.removeImage(id);\n this._changedImages[id] = true;\n }\n\n this._spritesImagesIds = {};\n this._availableImages = this.imageManager.listImages();\n this._changed = true;\n this.dispatcher.broadcast(MessageType.setImages, this._availableImages);\n this.fire(new Event('data', {dataType: 'style'}));\n }\n\n _validateLayer(layer: StyleLayer) {\n const sourceCache = this.sourceCaches[layer.source];\n if (!sourceCache) {\n return;\n }\n\n const sourceLayer = layer.sourceLayer;\n if (!sourceLayer) {\n return;\n }\n\n const source = sourceCache.getSource();\n if (source.type === 'geojson' || (source.vectorLayerIds && source.vectorLayerIds.indexOf(sourceLayer) === -1)) {\n this.fire(new ErrorEvent(new Error(\n `Source layer \"${sourceLayer}\" ` +\n `does not exist on source \"${source.id}\" ` +\n `as specified by style layer \"${layer.id}\".`\n )));\n }\n }\n\n loaded() {\n if (!this._loaded)\n return false;\n\n if (Object.keys(this._updatedSources).length)\n return false;\n\n for (const id in this.sourceCaches)\n if (!this.sourceCaches[id].loaded())\n return false;\n\n if (!this.imageManager.isLoaded())\n return false;\n\n return true;\n }\n\n /**\n * @hidden\n * take an array of string IDs, and based on this._layers, generate an array of LayerSpecification\n * @param ids - an array of string IDs, for which serialized layers will be generated. If omitted, all serialized layers will be returned\n * @param returnClose - if true, return a clone of the layer object\n * @returns generated result\n */\n private _serializeByIds(ids: Array, returnClone: boolean = false): Array {\n\n const serializedLayersDictionary = this._serializedAllLayers();\n if (!ids || ids.length === 0) {\n return returnClone ? Object.values(clone(serializedLayersDictionary)) : Object.values(serializedLayersDictionary);\n }\n\n const serializedLayers = [];\n for (const id of ids) {\n // this check will skip all custom layers\n if (serializedLayersDictionary[id]) {\n const toPush = returnClone ? clone(serializedLayersDictionary[id]) : serializedLayersDictionary[id];\n serializedLayers.push(toPush);\n }\n }\n\n return serializedLayers;\n }\n\n /**\n * @hidden\n * Lazy initialization of this._serializedLayers dictionary and return it\n * @returns this._serializedLayers dictionary\n */\n private _serializedAllLayers(): {[_: string]: LayerSpecification} {\n let serializedLayers = this._serializedLayers;\n if (serializedLayers) {\n return serializedLayers;\n }\n\n serializedLayers = this._serializedLayers = {};\n const allLayerIds: string [] = Object.keys(this._layers);\n for (const layerId of allLayerIds) {\n const layer = this._layers[layerId];\n if (layer.type !== 'custom') {\n serializedLayers[layerId] = layer.serialize();\n }\n }\n\n return serializedLayers;\n }\n\n hasTransitions() {\n if (this.light && this.light.hasTransition()) {\n return true;\n }\n\n if (this.sky && this.sky.hasTransition()) {\n return true;\n }\n\n for (const id in this.sourceCaches) {\n if (this.sourceCaches[id].hasTransition()) {\n return true;\n }\n }\n\n for (const id in this._layers) {\n if (this._layers[id].hasTransition()) {\n return true;\n }\n }\n\n return false;\n }\n\n _checkLoaded() {\n if (!this._loaded) {\n throw new Error('Style is not done loading.');\n }\n }\n\n /**\n * @internal\n * Apply queued style updates in a batch and recalculate zoom-dependent paint properties.\n */\n update(parameters: EvaluationParameters) {\n if (!this._loaded) {\n return;\n }\n\n const changed = this._changed;\n if (changed) {\n const updatedIds = Object.keys(this._updatedLayers);\n const removedIds = Object.keys(this._removedLayers);\n\n if (updatedIds.length || removedIds.length) {\n this._updateWorkerLayers(updatedIds, removedIds);\n }\n for (const id in this._updatedSources) {\n const action = this._updatedSources[id];\n\n if (action === 'reload') {\n this._reloadSource(id);\n } else if (action === 'clear') {\n this._clearSource(id);\n } else {\n throw new Error(`Invalid action ${action}`);\n }\n }\n\n this._updateTilesForChangedImages();\n this._updateTilesForChangedGlyphs();\n\n for (const id in this._updatedPaintProps) {\n this._layers[id].updateTransitions(parameters);\n }\n\n this.light.updateTransitions(parameters);\n this.sky.updateTransitions(parameters);\n\n this._resetUpdates();\n }\n\n const sourcesUsedBefore = {};\n\n // save 'used' status to sourcesUsedBefore object and reset all sourceCaches 'used' field to false\n for (const sourceCacheId in this.sourceCaches) {\n const sourceCache = this.sourceCaches[sourceCacheId];\n\n // sourceCache.used could be undefined, and sourcesUsedBefore[sourceCacheId] is also 'undefined'\n sourcesUsedBefore[sourceCacheId] = sourceCache.used;\n sourceCache.used = false;\n }\n\n // loop all layers and find layers that are not hidden at parameters.zoom\n // and set used to true in sourceCaches dictionary for the sources of these layers\n for (const layerId of this._order) {\n const layer = this._layers[layerId];\n\n layer.recalculate(parameters, this._availableImages);\n if (!layer.isHidden(parameters.zoom) && layer.source) {\n this.sourceCaches[layer.source].used = true;\n }\n }\n\n // cross check sourcesUsedBefore against updated this.sourceCaches dictionary\n // if \"used\" field is different fire visibility event\n for (const sourcesUsedBeforeId in sourcesUsedBefore) {\n const sourceCache = this.sourceCaches[sourcesUsedBeforeId];\n\n // (undefine !== false) will evaluate to true and fire an useless visibility event\n // need force \"falsy\" values to boolean to avoid the case above\n if (!!sourcesUsedBefore[sourcesUsedBeforeId] !== !!sourceCache.used) {\n sourceCache.fire(new Event('data',\n {\n sourceDataType: 'visibility',\n dataType: 'source',\n sourceId: sourcesUsedBeforeId\n }));\n }\n }\n\n this.light.recalculate(parameters);\n this.sky.recalculate(parameters);\n this.z = parameters.zoom;\n\n if (changed) {\n this.fire(new Event('data', {dataType: 'style'}));\n }\n }\n\n /*\n * Apply any queued image changes.\n */\n _updateTilesForChangedImages() {\n const changedImages = Object.keys(this._changedImages);\n if (changedImages.length) {\n for (const name in this.sourceCaches) {\n this.sourceCaches[name].reloadTilesForDependencies(['icons', 'patterns'], changedImages);\n }\n this._changedImages = {};\n }\n }\n\n _updateTilesForChangedGlyphs() {\n if (this._glyphsDidChange) {\n for (const name in this.sourceCaches) {\n this.sourceCaches[name].reloadTilesForDependencies(['glyphs'], ['']);\n }\n this._glyphsDidChange = false;\n }\n }\n\n _updateWorkerLayers(updatedIds: Array, removedIds: Array) {\n this.dispatcher.broadcast(MessageType.updateLayers, {\n layers: this._serializeByIds(updatedIds, false),\n removedIds\n });\n }\n\n _resetUpdates() {\n this._changed = false;\n\n this._updatedLayers = {};\n this._removedLayers = {};\n\n this._updatedSources = {};\n this._updatedPaintProps = {};\n\n this._changedImages = {};\n this._glyphsDidChange = false;\n }\n\n /**\n * Update this style's state to match the given style JSON, performing only\n * the necessary mutations.\n *\n * May throw an Error ('Unimplemented: METHOD') if the mapbox-gl-style-spec\n * diff algorithm produces an operation that is not supported.\n *\n * @returns true if any changes were made; false otherwise\n */\n setState(nextState: StyleSpecification, options: StyleSwapOptions & StyleSetterOptions = {}) {\n this._checkLoaded();\n\n const serializedStyle = this.serialize();\n nextState = options.transformStyle ? options.transformStyle(serializedStyle, nextState) : nextState;\n const validate = options.validate ?? true;\n if (validate && emitValidationErrors(this, validateStyle(nextState))) return false;\n\n nextState = clone(nextState);\n nextState.layers = deref(nextState.layers);\n\n const changes = diffStyles(serializedStyle, nextState);\n const operations = this._getOperationsToPerform(changes);\n\n if (operations.unimplemented.length > 0) {\n throw new Error(`Unimplemented: ${operations.unimplemented.join(', ')}.`);\n }\n\n if (operations.operations.length === 0) {\n return false;\n }\n\n for (const styleChangeOperation of operations.operations) {\n styleChangeOperation();\n }\n\n this.stylesheet = nextState;\n\n // reset serialization field, to be populated only when needed\n this._serializedLayers = null;\n\n return true;\n }\n\n _getOperationsToPerform(diff: DiffCommand[]) {\n const operations: Function[] = [];\n const unimplemented: string[] = [];\n for (const op of diff) {\n switch (op.command) {\n case 'setCenter':\n case 'setZoom':\n case 'setBearing':\n case 'setPitch':\n case 'setRoll':\n continue;\n case 'addLayer':\n operations.push(() => this.addLayer.apply(this, op.args));\n break;\n case 'removeLayer':\n operations.push(() => this.removeLayer.apply(this, op.args));\n break;\n case 'setPaintProperty':\n operations.push(() => this.setPaintProperty.apply(this, op.args));\n break;\n case 'setLayoutProperty':\n operations.push(() => this.setLayoutProperty.apply(this, op.args));\n break;\n case 'setFilter':\n operations.push(() => this.setFilter.apply(this, op.args));\n break;\n case 'addSource':\n operations.push(() => this.addSource.apply(this, op.args));\n break;\n case 'removeSource':\n operations.push(() => this.removeSource.apply(this, op.args));\n break;\n case 'setLayerZoomRange':\n operations.push(() => this.setLayerZoomRange.apply(this, op.args));\n break;\n case 'setLight':\n operations.push(() => this.setLight.apply(this, op.args));\n break;\n case 'setGeoJSONSourceData':\n operations.push(() => this.setGeoJSONSourceData.apply(this, op.args));\n break;\n case 'setGlyphs':\n operations.push(() => this.setGlyphs.apply(this, op.args));\n break;\n case 'setSprite':\n operations.push(() => this.setSprite.apply(this, op.args));\n break;\n case 'setTerrain':\n operations.push(() => this.map.setTerrain.apply(this, op.args));\n break;\n case 'setSky':\n operations.push(() => this.setSky.apply(this, op.args));\n break;\n case 'setProjection':\n this.setProjection.apply(this, op.args);\n break;\n case 'setTransition':\n operations.push(() => {});\n break;\n default:\n unimplemented.push(op.command);\n break;\n }\n }\n return {\n operations,\n unimplemented\n };\n }\n\n addImage(id: string, image: StyleImage) {\n if (this.getImage(id)) {\n return this.fire(new ErrorEvent(new Error(`An image named \"${id}\" already exists.`)));\n }\n this.imageManager.addImage(id, image);\n this._afterImageUpdated(id);\n }\n\n updateImage(id: string, image: StyleImage) {\n this.imageManager.updateImage(id, image);\n }\n\n getImage(id: string): StyleImage {\n return this.imageManager.getImage(id);\n }\n\n removeImage(id: string) {\n if (!this.getImage(id)) {\n return this.fire(new ErrorEvent(new Error(`An image named \"${id}\" does not exist.`)));\n }\n this.imageManager.removeImage(id);\n this._afterImageUpdated(id);\n }\n\n _afterImageUpdated(id: string) {\n this._availableImages = this.imageManager.listImages();\n this._changedImages[id] = true;\n this._changed = true;\n this.dispatcher.broadcast(MessageType.setImages, this._availableImages);\n this.fire(new Event('data', {dataType: 'style'}));\n }\n\n listImages() {\n this._checkLoaded();\n\n return this.imageManager.listImages();\n }\n\n addSource(id: string, source: SourceSpecification | CanvasSourceSpecification, options: StyleSetterOptions = {}) {\n this._checkLoaded();\n\n if (this.sourceCaches[id] !== undefined) {\n throw new Error(`Source \"${id}\" already exists.`);\n }\n\n if (!source.type) {\n throw new Error(`The type property must be defined, but only the following properties were given: ${Object.keys(source).join(', ')}.`);\n }\n\n const builtIns = ['vector', 'raster', 'geojson', 'video', 'image'];\n const shouldValidate = builtIns.indexOf(source.type) >= 0;\n if (shouldValidate && this._validate(validateStyle.source, `sources.${id}`, source, null, options)) return;\n if (this.map && this.map._collectResourceTiming) (source as any).collectResourceTiming = true;\n const sourceCache = this.sourceCaches[id] = new SourceCache(id, source, this.dispatcher);\n sourceCache.style = this;\n sourceCache.setEventedParent(this, () => ({\n isSourceLoaded: sourceCache.loaded(),\n source: sourceCache.serialize(),\n sourceId: id\n }));\n\n sourceCache.onAdd(this.map);\n this._changed = true;\n }\n\n /**\n * Remove a source from this stylesheet, given its id.\n * @param id - id of the source to remove\n * @throws if no source is found with the given ID\n */\n removeSource(id: string): this {\n this._checkLoaded();\n\n if (this.sourceCaches[id] === undefined) {\n throw new Error('There is no source with this ID');\n }\n for (const layerId in this._layers) {\n if (this._layers[layerId].source === id) {\n return this.fire(new ErrorEvent(new Error(`Source \"${id}\" cannot be removed while layer \"${layerId}\" is using it.`)));\n }\n }\n\n const sourceCache = this.sourceCaches[id];\n delete this.sourceCaches[id];\n delete this._updatedSources[id];\n sourceCache.fire(new Event('data', {sourceDataType: 'metadata', dataType: 'source', sourceId: id}));\n sourceCache.setEventedParent(null);\n sourceCache.onRemove(this.map);\n this._changed = true;\n }\n\n /**\n * Set the data of a GeoJSON source, given its id.\n * @param id - id of the source\n * @param data - GeoJSON source\n */\n setGeoJSONSourceData(id: string, data: GeoJSON.GeoJSON | string) {\n this._checkLoaded();\n\n if (this.sourceCaches[id] === undefined) throw new Error(`There is no source with this ID=${id}`);\n const geojsonSource: GeoJSONSource = (this.sourceCaches[id].getSource() as any);\n if (geojsonSource.type !== 'geojson') throw new Error(`geojsonSource.type is ${geojsonSource.type}, which is !== 'geojson`);\n\n geojsonSource.setData(data);\n this._changed = true;\n }\n\n /**\n * Get a source by ID.\n * @param id - ID of the desired source\n * @returns source\n */\n getSource(id: string): Source | undefined {\n return this.sourceCaches[id] && this.sourceCaches[id].getSource();\n }\n\n /**\n * Add a layer to the map style. The layer will be inserted before the layer with\n * ID `before`, or appended if `before` is omitted.\n * @param layerObject - The style layer to add.\n * @param before - ID of an existing layer to insert before\n * @param options - Style setter options.\n */\n addLayer(layerObject: AddLayerObject, before?: string, options: StyleSetterOptions = {}): this {\n this._checkLoaded();\n\n const id = layerObject.id;\n\n if (this.getLayer(id)) {\n this.fire(new ErrorEvent(new Error(`Layer \"${id}\" already exists on this map.`)));\n return;\n }\n\n let layer: ReturnType;\n if (layerObject.type === 'custom') {\n\n if (emitValidationErrors(this, validateCustomStyleLayer(layerObject))) return;\n\n layer = createStyleLayer(layerObject);\n\n } else {\n if ('source' in layerObject && typeof layerObject.source === 'object') {\n this.addSource(id, layerObject.source);\n layerObject = clone(layerObject);\n layerObject = extend(layerObject, {source: id});\n }\n\n // this layer is not in the style.layers array, so we pass an impossible array index\n if (this._validate(validateStyle.layer,\n `layers.${id}`, layerObject, {arrayIndex: -1}, options)) return;\n\n layer = createStyleLayer(layerObject as LayerSpecification | CustomLayerInterface);\n this._validateLayer(layer);\n\n layer.setEventedParent(this, {layer: {id}});\n }\n\n const index = before ? this._order.indexOf(before) : this._order.length;\n if (before && index === -1) {\n this.fire(new ErrorEvent(new Error(`Cannot add layer \"${id}\" before non-existing layer \"${before}\".`)));\n return;\n }\n\n this._order.splice(index, 0, id);\n this._layerOrderChanged = true;\n\n this._layers[id] = layer;\n\n if (this._removedLayers[id] && layer.source && layer.type !== 'custom') {\n // If, in the current batch, we have already removed this layer\n // and we are now re-adding it with a different `type`, then we\n // need to clear (rather than just reload) the underlying source's\n // tiles. Otherwise, tiles marked 'reloading' will have buckets /\n // buffers that are set up for the _previous_ version of this\n // layer, causing, e.g.:\n // https://github.com/mapbox/mapbox-gl-js/issues/3633\n const removed = this._removedLayers[id];\n delete this._removedLayers[id];\n if (removed.type !== layer.type) {\n this._updatedSources[layer.source] = 'clear';\n } else {\n this._updatedSources[layer.source] = 'reload';\n this.sourceCaches[layer.source].pause();\n }\n }\n this._updateLayer(layer);\n\n if (layer.onAdd) {\n layer.onAdd(this.map);\n }\n }\n\n /**\n * Moves a layer to a different z-position. The layer will be inserted before the layer with\n * ID `before`, or appended if `before` is omitted.\n * @param id - ID of the layer to move\n * @param before - ID of an existing layer to insert before\n */\n moveLayer(id: string, before?: string) {\n this._checkLoaded();\n this._changed = true;\n\n const layer = this._layers[id];\n if (!layer) {\n this.fire(new ErrorEvent(new Error(`The layer '${id}' does not exist in the map's style and cannot be moved.`)));\n return;\n }\n\n if (id === before) {\n return;\n }\n\n const index = this._order.indexOf(id);\n this._order.splice(index, 1);\n\n const newIndex = before ? this._order.indexOf(before) : this._order.length;\n if (before && newIndex === -1) {\n this.fire(new ErrorEvent(new Error(`Cannot move layer \"${id}\" before non-existing layer \"${before}\".`)));\n return;\n }\n this._order.splice(newIndex, 0, id);\n\n this._layerOrderChanged = true;\n }\n\n /**\n * Remove the layer with the given id from the style.\n * A {@link ErrorEvent} event will be fired if no such layer exists.\n *\n * @param id - id of the layer to remove\n */\n removeLayer(id: string) {\n this._checkLoaded();\n\n const layer = this._layers[id];\n if (!layer) {\n this.fire(new ErrorEvent(new Error(`Cannot remove non-existing layer \"${id}\".`)));\n return;\n }\n\n layer.setEventedParent(null);\n\n const index = this._order.indexOf(id);\n this._order.splice(index, 1);\n\n this._layerOrderChanged = true;\n this._changed = true;\n this._removedLayers[id] = layer;\n delete this._layers[id];\n\n if (this._serializedLayers) {\n delete this._serializedLayers[id];\n }\n delete this._updatedLayers[id];\n delete this._updatedPaintProps[id];\n\n if (layer.onRemove) {\n layer.onRemove(this.map);\n }\n }\n\n /**\n * Return the style layer object with the given `id`.\n *\n * @param id - id of the desired layer\n * @returns a layer, if one with the given `id` exists\n */\n getLayer(id: string): StyleLayer | undefined {\n return this._layers[id];\n }\n\n /**\n * Return the ids of all layers currently in the style, including custom layers, in order.\n *\n * @returns ids of layers, in order\n */\n getLayersOrder(): string[] {\n return [...this._order];\n }\n\n /**\n * Checks if a specific layer is present within the style.\n *\n * @param id - the id of the desired layer\n * @returns a boolean specifying if the given layer is present\n */\n hasLayer(id: string): boolean {\n return id in this._layers;\n }\n\n setLayerZoomRange(layerId: string, minzoom?: number | null, maxzoom?: number | null) {\n this._checkLoaded();\n\n const layer = this.getLayer(layerId);\n if (!layer) {\n this.fire(new ErrorEvent(new Error(`Cannot set the zoom range of non-existing layer \"${layerId}\".`)));\n return;\n }\n\n if (layer.minzoom === minzoom && layer.maxzoom === maxzoom) return;\n\n if (minzoom != null) {\n layer.minzoom = minzoom;\n }\n if (maxzoom != null) {\n layer.maxzoom = maxzoom;\n }\n this._updateLayer(layer);\n }\n\n setFilter(layerId: string, filter?: FilterSpecification | null, options: StyleSetterOptions = {}) {\n this._checkLoaded();\n\n const layer = this.getLayer(layerId);\n if (!layer) {\n this.fire(new ErrorEvent(new Error(`Cannot filter non-existing layer \"${layerId}\".`)));\n return;\n }\n\n if (deepEqual(layer.filter, filter)) {\n return;\n }\n\n if (filter === null || filter === undefined) {\n layer.filter = undefined;\n this._updateLayer(layer);\n return;\n }\n\n if (this._validate(validateStyle.filter, `layers.${layer.id}.filter`, filter, null, options)) {\n return;\n }\n\n layer.filter = clone(filter);\n this._updateLayer(layer);\n }\n\n /**\n * Get a layer's filter object\n * @param layer - the layer to inspect\n * @returns the layer's filter, if any\n */\n getFilter(layer: string): FilterSpecification | void {\n return clone(this.getLayer(layer).filter);\n }\n\n setLayoutProperty(layerId: string, name: string, value: any, options: StyleSetterOptions = {}) {\n this._checkLoaded();\n\n const layer = this.getLayer(layerId);\n if (!layer) {\n this.fire(new ErrorEvent(new Error(`Cannot style non-existing layer \"${layerId}\".`)));\n return;\n }\n\n if (deepEqual(layer.getLayoutProperty(name), value)) return;\n\n layer.setLayoutProperty(name, value, options);\n this._updateLayer(layer);\n }\n\n /**\n * Get a layout property's value from a given layer\n * @param layerId - the layer to inspect\n * @param name - the name of the layout property\n * @returns the property value\n */\n getLayoutProperty(layerId: string, name: string) {\n const layer = this.getLayer(layerId);\n if (!layer) {\n this.fire(new ErrorEvent(new Error(`Cannot get style of non-existing layer \"${layerId}\".`)));\n return;\n }\n\n return layer.getLayoutProperty(name);\n }\n\n setPaintProperty(layerId: string, name: string, value: any, options: StyleSetterOptions = {}) {\n this._checkLoaded();\n\n const layer = this.getLayer(layerId);\n if (!layer) {\n this.fire(new ErrorEvent(new Error(`Cannot style non-existing layer \"${layerId}\".`)));\n return;\n }\n\n if (deepEqual(layer.getPaintProperty(name), value)) return;\n\n const requiresRelayout = layer.setPaintProperty(name, value, options);\n if (requiresRelayout) {\n this._updateLayer(layer);\n }\n\n this._changed = true;\n this._updatedPaintProps[layerId] = true;\n // reset serialization field, to be populated only when needed\n this._serializedLayers = null;\n }\n\n getPaintProperty(layer: string, name: string) {\n return this.getLayer(layer).getPaintProperty(name);\n }\n\n setFeatureState(target: FeatureIdentifier, state: any) {\n this._checkLoaded();\n const sourceId = target.source;\n const sourceLayer = target.sourceLayer;\n const sourceCache = this.sourceCaches[sourceId];\n\n if (sourceCache === undefined) {\n this.fire(new ErrorEvent(new Error(`The source '${sourceId}' does not exist in the map's style.`)));\n return;\n }\n const sourceType = sourceCache.getSource().type;\n if (sourceType === 'geojson' && sourceLayer) {\n this.fire(new ErrorEvent(new Error('GeoJSON sources cannot have a sourceLayer parameter.')));\n return;\n }\n if (sourceType === 'vector' && !sourceLayer) {\n this.fire(new ErrorEvent(new Error('The sourceLayer parameter must be provided for vector source types.')));\n return;\n }\n if (target.id === undefined) {\n this.fire(new ErrorEvent(new Error('The feature id parameter must be provided.')));\n }\n\n sourceCache.setFeatureState(sourceLayer, target.id, state);\n }\n\n removeFeatureState(target: FeatureIdentifier, key?: string) {\n this._checkLoaded();\n const sourceId = target.source;\n const sourceCache = this.sourceCaches[sourceId];\n\n if (sourceCache === undefined) {\n this.fire(new ErrorEvent(new Error(`The source '${sourceId}' does not exist in the map's style.`)));\n return;\n }\n\n const sourceType = sourceCache.getSource().type;\n const sourceLayer = sourceType === 'vector' ? target.sourceLayer : undefined;\n\n if (sourceType === 'vector' && !sourceLayer) {\n this.fire(new ErrorEvent(new Error('The sourceLayer parameter must be provided for vector source types.')));\n return;\n }\n\n if (key && (typeof target.id !== 'string' && typeof target.id !== 'number')) {\n this.fire(new ErrorEvent(new Error('A feature id is required to remove its specific state property.')));\n return;\n }\n\n sourceCache.removeFeatureState(sourceLayer, target.id, key);\n }\n\n getFeatureState(target: FeatureIdentifier) {\n this._checkLoaded();\n const sourceId = target.source;\n const sourceLayer = target.sourceLayer;\n const sourceCache = this.sourceCaches[sourceId];\n\n if (sourceCache === undefined) {\n this.fire(new ErrorEvent(new Error(`The source '${sourceId}' does not exist in the map's style.`)));\n return;\n }\n const sourceType = sourceCache.getSource().type;\n if (sourceType === 'vector' && !sourceLayer) {\n this.fire(new ErrorEvent(new Error('The sourceLayer parameter must be provided for vector source types.')));\n return;\n }\n if (target.id === undefined) {\n this.fire(new ErrorEvent(new Error('The feature id parameter must be provided.')));\n }\n\n return sourceCache.getFeatureState(sourceLayer, target.id);\n }\n\n getTransition() {\n return extend({duration: 300, delay: 0}, this.stylesheet && this.stylesheet.transition);\n }\n\n serialize(): StyleSpecification | undefined {\n // We return undefined before we're loaded, following the pattern of Map.getStyle() before\n // the Style object is initialized.\n // Internally, Style._validate() calls Style.serialize() but callers are responsible for\n // calling Style._checkLoaded() first if their validation requires the style to be loaded.\n if (!this._loaded) return;\n\n const sources = mapObject(this.sourceCaches, (source) => source.serialize());\n const layers = this._serializeByIds(this._order, true);\n const terrain = this.map.getTerrain() || undefined;\n const myStyleSheet = this.stylesheet;\n\n return filterObject({\n version: myStyleSheet.version,\n name: myStyleSheet.name,\n metadata: myStyleSheet.metadata,\n light: myStyleSheet.light,\n sky: myStyleSheet.sky,\n center: myStyleSheet.center,\n zoom: myStyleSheet.zoom,\n bearing: myStyleSheet.bearing,\n pitch: myStyleSheet.pitch,\n sprite: myStyleSheet.sprite,\n glyphs: myStyleSheet.glyphs,\n transition: myStyleSheet.transition,\n projection: myStyleSheet.projection,\n sources,\n layers,\n terrain\n },\n (value) => { return value !== undefined; });\n }\n\n _updateLayer(layer: StyleLayer) {\n this._updatedLayers[layer.id] = true;\n if (layer.source && !this._updatedSources[layer.source] &&\n //Skip for raster layers (https://github.com/mapbox/mapbox-gl-js/issues/7865)\n this.sourceCaches[layer.source].getSource().type !== 'raster') {\n this._updatedSources[layer.source] = 'reload';\n this.sourceCaches[layer.source].pause();\n }\n\n // upon updating, serialized layer dictionary should be reset.\n // When needed, it will be populated with the correct copy again.\n this._serializedLayers = null;\n this._changed = true;\n }\n\n _flattenAndSortRenderedFeatures(sourceResults: Array<{ [key: string]: Array<{featureIndex: number; feature: MapGeoJSONFeature}> }>) {\n // Feature order is complicated.\n // The order between features in two 2D layers is always determined by layer order.\n // The order between features in two 3D layers is always determined by depth.\n // The order between a feature in a 2D layer and a 3D layer is tricky:\n // Most often layer order determines the feature order in this case. If\n // a line layer is above a extrusion layer the line feature will be rendered\n // above the extrusion. If the line layer is below the extrusion layer,\n // it will be rendered below it.\n //\n // There is a weird case though.\n // You have layers in this order: extrusion_layer_a, line_layer, extrusion_layer_b\n // Each layer has a feature that overlaps the other features.\n // The feature in extrusion_layer_a is closer than the feature in extrusion_layer_b so it is rendered above.\n // The feature in line_layer is rendered above extrusion_layer_a.\n // This means that that the line_layer feature is above the extrusion_layer_b feature despite\n // it being in an earlier layer.\n\n const isLayer3D = layerId => this._layers[layerId].type === 'fill-extrusion';\n\n const layerIndex = {};\n const features3D = [];\n for (let l = this._order.length - 1; l >= 0; l--) {\n const layerId = this._order[l];\n if (isLayer3D(layerId)) {\n layerIndex[layerId] = l;\n for (const sourceResult of sourceResults) {\n const layerFeatures = sourceResult[layerId];\n if (layerFeatures) {\n for (const featureWrapper of layerFeatures) {\n features3D.push(featureWrapper);\n }\n }\n }\n }\n }\n\n features3D.sort((a, b) => {\n return b.intersectionZ - a.intersectionZ;\n });\n\n const features = [];\n for (let l = this._order.length - 1; l >= 0; l--) {\n const layerId = this._order[l];\n\n if (isLayer3D(layerId)) {\n // add all 3D features that are in or above the current layer\n for (let i = features3D.length - 1; i >= 0; i--) {\n const topmost3D = features3D[i].feature;\n if (layerIndex[topmost3D.layer.id] < l) break;\n features.push(topmost3D);\n features3D.pop();\n }\n } else {\n for (const sourceResult of sourceResults) {\n const layerFeatures = sourceResult[layerId];\n if (layerFeatures) {\n for (const featureWrapper of layerFeatures) {\n features.push(featureWrapper.feature);\n }\n }\n }\n }\n }\n\n return features;\n }\n\n queryRenderedFeatures(queryGeometry: any, params: QueryRenderedFeaturesOptions, transform: IReadonlyTransform) {\n if (params && params.filter) {\n this._validate(validateStyle.filter, 'queryRenderedFeatures.filter', params.filter, null, params);\n }\n\n const includedSources = {};\n if (params && params.layers) {\n const isArrayOrSet = Array.isArray(params.layers) || params.layers instanceof Set;\n if (!isArrayOrSet) {\n this.fire(new ErrorEvent(new Error('parameters.layers must be an Array or a Set of strings')));\n return [];\n }\n for (const layerId of params.layers) {\n const layer = this._layers[layerId];\n if (!layer) {\n // this layer is not in the style.layers array\n this.fire(new ErrorEvent(new Error(`The layer '${layerId}' does not exist in the map's style and cannot be queried for features.`)));\n return [];\n }\n includedSources[layer.source] = true;\n }\n }\n\n const sourceResults = [];\n\n params.availableImages = this._availableImages;\n\n // LayerSpecification is serialized StyleLayer, and this casting is safe.\n const serializedLayers = this._serializedAllLayers() as {[_: string]: StyleLayer};\n\n const layersAsSet = params.layers instanceof Set ? params.layers : Array.isArray(params.layers) ? new Set(params.layers) : null;\n const paramsStrict: QueryRenderedFeaturesOptionsStrict = {\n ...params,\n layers: layersAsSet,\n };\n\n for (const id in this.sourceCaches) {\n if (params.layers && !includedSources[id]) continue;\n sourceResults.push(\n queryRenderedFeatures(\n this.sourceCaches[id],\n this._layers,\n serializedLayers,\n queryGeometry,\n paramsStrict,\n transform)\n );\n }\n\n if (this.placement) {\n // If a placement has run, query against its CollisionIndex\n // for symbol results, and treat it as an extra source to merge\n sourceResults.push(\n queryRenderedSymbols(\n this._layers,\n serializedLayers,\n this.sourceCaches,\n queryGeometry,\n paramsStrict,\n this.placement.collisionIndex,\n this.placement.retainedQueryData)\n );\n }\n\n return this._flattenAndSortRenderedFeatures(sourceResults);\n }\n\n querySourceFeatures(\n sourceID: string,\n params?: QuerySourceFeatureOptions\n ) {\n if (params && params.filter) {\n this._validate(validateStyle.filter, 'querySourceFeatures.filter', params.filter, null, params);\n }\n const sourceCache = this.sourceCaches[sourceID];\n return sourceCache ? querySourceFeatures(sourceCache, params) : [];\n }\n\n getLight() {\n return this.light.getLight();\n }\n\n setLight(lightOptions: LightSpecification, options: StyleSetterOptions = {}) {\n this._checkLoaded();\n\n const light = this.light.getLight();\n let _update = false;\n for (const key in lightOptions) {\n if (!deepEqual(lightOptions[key], light[key])) {\n _update = true;\n break;\n }\n }\n if (!_update) return;\n\n const parameters = {\n now: browser.now(),\n transition: extend({\n duration: 300,\n delay: 0\n }, this.stylesheet.transition)\n };\n\n this.light.setLight(lightOptions, options);\n this.light.updateTransitions(parameters);\n }\n\n getProjection(): ProjectionSpecification {\n return this.stylesheet?.projection;\n }\n\n setProjection(projection: ProjectionSpecification) {\n this._checkLoaded();\n if (this.projection) {\n if (this.projection.name === projection.type) return;\n this.projection.destroy();\n delete this.projection;\n }\n this.stylesheet.projection = projection;\n this._setProjectionInternal(projection.type);\n }\n\n getSky(): SkySpecification {\n return this.stylesheet?.sky;\n }\n\n setSky(skyOptions?: SkySpecification, options: StyleSetterOptions = {}) {\n this._checkLoaded();\n const sky = this.getSky();\n\n let update = false;\n if (!skyOptions && !sky) return;\n\n if (skyOptions && !sky) {\n update = true;\n } else if (!skyOptions && sky) {\n update = true;\n } else {\n for (const key in skyOptions) {\n if (!deepEqual(skyOptions[key], sky[key])) {\n update = true;\n break;\n }\n }\n }\n if (!update) return;\n\n const parameters = {\n now: browser.now(),\n transition: extend({\n duration: 300,\n delay: 0\n }, this.stylesheet.transition)\n };\n\n this.stylesheet.sky = skyOptions;\n this.sky.setSky(skyOptions, options);\n this.sky.updateTransitions(parameters);\n }\n\n _setProjectionInternal(name: ProjectionSpecification['type']) {\n const projectionObjects = createProjectionFromName(name);\n this.projection = projectionObjects.projection;\n this.map.migrateProjection(projectionObjects.transform, projectionObjects.cameraHelper);\n for (const key in this.sourceCaches) {\n this.sourceCaches[key].reload();\n }\n }\n\n _validate(validate: Validator, key: string, value: any, props: any, options: {\n validate?: boolean;\n } = {}) {\n if (options && options.validate === false) {\n return false;\n }\n return emitValidationErrors(this, validate.call(validateStyle, extend({\n key,\n style: this.serialize(),\n value,\n styleSpec\n }, props)));\n }\n\n _remove(mapRemoved: boolean = true) {\n if (this._frameRequest) {\n this._frameRequest.abort();\n this._frameRequest = null;\n }\n if (this._loadStyleRequest) {\n this._loadStyleRequest.abort();\n this._loadStyleRequest = null;\n }\n if (this._spriteRequest) {\n this._spriteRequest.abort();\n this._spriteRequest = null;\n }\n rtlMainThreadPluginFactory().off(RTLPluginLoadedEventName, this._rtlPluginLoaded);\n for (const layerId in this._layers) {\n const layer: StyleLayer = this._layers[layerId];\n layer.setEventedParent(null);\n }\n for (const id in this.sourceCaches) {\n const sourceCache = this.sourceCaches[id];\n sourceCache.setEventedParent(null);\n sourceCache.onRemove(this.map);\n }\n this.imageManager.setEventedParent(null);\n this.setEventedParent(null);\n if (mapRemoved) {\n this.dispatcher.broadcast(MessageType.removeMap, undefined);\n }\n this.dispatcher.remove(mapRemoved);\n }\n\n _clearSource(id: string) {\n this.sourceCaches[id].clearTiles();\n }\n\n _reloadSource(id: string) {\n this.sourceCaches[id].resume();\n this.sourceCaches[id].reload();\n }\n\n _updateSources(transform: ITransform) {\n for (const id in this.sourceCaches) {\n this.sourceCaches[id].update(transform, this.map.terrain);\n }\n }\n\n _generateCollisionBoxes() {\n for (const id in this.sourceCaches) {\n this._reloadSource(id);\n }\n }\n\n _updatePlacement(transform: ITransform, showCollisionBoxes: boolean, fadeDuration: number, crossSourceCollisions: boolean, forceFullPlacement: boolean = false) {\n let symbolBucketsChanged = false;\n let placementCommitted = false;\n\n const layerTiles = {};\n\n for (const layerID of this._order) {\n const styleLayer = this._layers[layerID];\n if (styleLayer.type !== 'symbol') continue;\n\n if (!layerTiles[styleLayer.source]) {\n const sourceCache = this.sourceCaches[styleLayer.source];\n layerTiles[styleLayer.source] = sourceCache.getRenderableIds(true)\n .map((id) => sourceCache.getTileByID(id))\n .sort((a, b) => (b.tileID.overscaledZ - a.tileID.overscaledZ) || (a.tileID.isLessThan(b.tileID) ? -1 : 1));\n }\n\n const layerBucketsChanged = this.crossTileSymbolIndex.addLayer(styleLayer, layerTiles[styleLayer.source], transform.center.lng);\n symbolBucketsChanged = symbolBucketsChanged || layerBucketsChanged;\n }\n this.crossTileSymbolIndex.pruneUnusedLayers(this._order);\n\n // Anything that changes our \"in progress\" layer and tile indices requires us\n // to start over. When we start over, we do a full placement instead of incremental\n // to prevent starvation.\n // We need to restart placement to keep layer indices in sync.\n // Also force full placement when fadeDuration === 0 to ensure that newly loaded\n // tiles will fully display symbols in their first frame\n forceFullPlacement = forceFullPlacement || this._layerOrderChanged || fadeDuration === 0;\n\n if (forceFullPlacement || !this.pauseablePlacement || (this.pauseablePlacement.isDone() && !this.placement.stillRecent(browser.now(), transform.zoom))) {\n this.pauseablePlacement = new PauseablePlacement(transform, this.map.terrain, this._order, forceFullPlacement, showCollisionBoxes, fadeDuration, crossSourceCollisions, this.placement);\n this._layerOrderChanged = false;\n }\n\n if (this.pauseablePlacement.isDone()) {\n // the last placement finished running, but the next one hasn’t\n // started yet because of the `stillRecent` check immediately\n // above, so mark it stale to ensure that we request another\n // render frame\n this.placement.setStale();\n } else {\n this.pauseablePlacement.continuePlacement(this._order, this._layers, layerTiles);\n\n if (this.pauseablePlacement.isDone()) {\n this.placement = this.pauseablePlacement.commit(browser.now());\n placementCommitted = true;\n }\n\n if (symbolBucketsChanged) {\n // since the placement gets split over multiple frames it is possible\n // these buckets were processed before they were changed and so the\n // placement is already stale while it is in progress\n this.pauseablePlacement.placement.setStale();\n }\n }\n\n if (placementCommitted || symbolBucketsChanged) {\n for (const layerID of this._order) {\n const styleLayer = this._layers[layerID];\n if (styleLayer.type !== 'symbol') continue;\n this.placement.updateLayerOpacities(styleLayer, layerTiles[styleLayer.source]);\n }\n }\n\n // needsRender is false when we have just finished a placement that didn't change the visibility of any symbols\n const needsRerender = !this.pauseablePlacement.isDone() || this.placement.hasTransitions(browser.now());\n return needsRerender;\n }\n\n _releaseSymbolFadeTiles() {\n for (const id in this.sourceCaches) {\n this.sourceCaches[id].releaseSymbolFadeTiles();\n }\n }\n\n // Callbacks from web workers\n\n async getImages(mapId: string | number, params: GetImagesParameters): Promise {\n const images = await this.imageManager.getImages(params.icons);\n\n // Apply queued image changes before setting the tile's dependencies so that the tile\n // is not reloaded unnecessarily. Without this forced update the reload could happen in cases\n // like this one:\n // - icons contains \"my-image\"\n // - imageManager.getImages(...) triggers `onstyleimagemissing`\n // - the user adds \"my-image\" within the callback\n // - addImage adds \"my-image\" to this._changedImages\n // - the next frame triggers a reload of this tile even though it already has the latest version\n this._updateTilesForChangedImages();\n\n const sourceCache = this.sourceCaches[params.source];\n if (sourceCache) {\n sourceCache.setDependencies(params.tileID.key, params.type, params.icons);\n }\n return images;\n }\n\n async getGlyphs(mapId: string | number, params: GetGlyphsParameters): Promise {\n const glyphs = await this.glyphManager.getGlyphs(params.stacks);\n const sourceCache = this.sourceCaches[params.source];\n if (sourceCache) {\n // we are not setting stacks as dependencies since for now\n // we just need to know which tiles have glyph dependencies\n sourceCache.setDependencies(params.tileID.key, params.type, ['']);\n }\n return glyphs;\n }\n\n getGlyphsUrl() {\n return this.stylesheet.glyphs || null;\n }\n\n setGlyphs(glyphsUrl: string | null, options: StyleSetterOptions = {}) {\n this._checkLoaded();\n if (glyphsUrl && this._validate(validateStyle.glyphs, 'glyphs', glyphsUrl, null, options)) {\n return;\n }\n\n this._glyphsDidChange = true;\n this.stylesheet.glyphs = glyphsUrl;\n this.glyphManager.entries = {};\n this.glyphManager.setURL(glyphsUrl);\n }\n\n /**\n * Add a sprite.\n *\n * @param id - The id of the desired sprite\n * @param url - The url to load the desired sprite from\n * @param options - The style setter options\n * @param completion - The completion handler\n */\n addSprite(id: string, url: string, options: StyleSetterOptions = {}, completion?: (err: Error) => void) {\n this._checkLoaded();\n\n const spriteToAdd = [{id, url}];\n const updatedSprite = [\n ...coerceSpriteToArray(this.stylesheet.sprite),\n ...spriteToAdd\n ];\n\n if (this._validate(validateStyle.sprite, 'sprite', updatedSprite, null, options)) return;\n\n this.stylesheet.sprite = updatedSprite;\n this._loadSprite(spriteToAdd, true, completion);\n }\n\n /**\n * Remove a sprite by its id. When the last sprite is removed, the whole `this.stylesheet.sprite` object becomes\n * `undefined`. This falsy `undefined` value later prevents attempts to load the sprite when it's absent.\n *\n * @param id - the id of the sprite to remove\n */\n removeSprite(id: string) {\n this._checkLoaded();\n\n const internalSpriteRepresentation = coerceSpriteToArray(this.stylesheet.sprite);\n\n if (!internalSpriteRepresentation.find(sprite => sprite.id === id)) {\n this.fire(new ErrorEvent(new Error(`Sprite \"${id}\" doesn't exists on this map.`)));\n return;\n }\n\n if (this._spritesImagesIds[id]) {\n for (const imageId of this._spritesImagesIds[id]) {\n this.imageManager.removeImage(imageId);\n this._changedImages[imageId] = true;\n }\n }\n\n internalSpriteRepresentation.splice(internalSpriteRepresentation.findIndex(sprite => sprite.id === id), 1);\n this.stylesheet.sprite = internalSpriteRepresentation.length > 0 ? internalSpriteRepresentation : undefined;\n\n delete this._spritesImagesIds[id];\n this._availableImages = this.imageManager.listImages();\n this._changed = true;\n this.dispatcher.broadcast(MessageType.setImages, this._availableImages);\n this.fire(new Event('data', {dataType: 'style'}));\n }\n\n /**\n * Get the current sprite value.\n *\n * @returns empty array when no sprite is set; id-url pairs otherwise\n */\n getSprite() {\n return coerceSpriteToArray(this.stylesheet.sprite);\n }\n\n /**\n * Set a new value for the style's sprite.\n *\n * @param sprite - new sprite value\n * @param options - style setter options\n * @param completion - the completion handler\n */\n setSprite(sprite: SpriteSpecification, options: StyleSetterOptions = {}, completion?: (err: Error) => void) {\n this._checkLoaded();\n\n if (sprite && this._validate(validateStyle.sprite, 'sprite', sprite, null, options)) {\n return;\n }\n\n this.stylesheet.sprite = sprite;\n\n if (sprite) {\n this._loadSprite(sprite, true, completion);\n } else {\n this._unloadSprite();\n if (completion) {\n completion(null);\n }\n }\n }\n}\n","import {type ProjectionSpecification} from '@maplibre/maplibre-gl-style-spec';\nimport {warnOnce} from '../../util/util';\nimport {type Projection} from './projection';\nimport {type ITransform} from '../transform_interface';\nimport {type ICameraHelper} from './camera_helper';\nimport {MercatorProjection} from './mercator';\nimport {MercatorTransform} from './mercator_transform';\nimport {MercatorCameraHelper} from './mercator_camera_helper';\nimport {GlobeProjection} from './globe';\nimport {GlobeTransform} from './globe_transform';\nimport {GlobeCameraHelper} from './globe_camera_helper';\n\nexport function createProjectionFromName(name: ProjectionSpecification['type']): {\n projection: Projection;\n transform: ITransform;\n cameraHelper: ICameraHelper;\n} {\n switch (name) {\n case 'mercator':\n {\n return {\n projection: new MercatorProjection(),\n transform: new MercatorTransform(),\n cameraHelper: new MercatorCameraHelper(),\n };\n }\n case 'globe':\n {\n const proj = new GlobeProjection();\n return {\n projection: proj,\n transform: new GlobeTransform(proj, true),\n cameraHelper: new GlobeCameraHelper(proj),\n };\n }\n case 'vertical-perspective':\n {\n const proj = new GlobeProjection();\n return {\n projection: proj,\n transform: new GlobeTransform(proj, true, false),\n cameraHelper: new GlobeCameraHelper(proj),\n };\n }\n default:\n {\n warnOnce(`Unknown projection name: ${name}. Falling back to mercator projection.`);\n return {\n projection: new MercatorProjection(),\n transform: new MercatorTransform(),\n cameraHelper: new MercatorCameraHelper(),\n };\n }\n }\n}\n","import type {RequestParameters} from './ajax';\n\n/**\n * A type of MapLibre resource.\n */\nexport const enum ResourceType {\n Glyphs = 'Glyphs',\n Image = 'Image',\n Source = 'Source',\n SpriteImage = 'SpriteImage',\n SpriteJSON = 'SpriteJSON',\n Style = 'Style',\n Tile = 'Tile',\n Unknown = 'Unknown',\n}\n\n/**\n * This function is used to tranform a request.\n * It is used just before executing the relevant request.\n */\nexport type RequestTransformFunction = (url: string, resourceType?: ResourceType) => RequestParameters | undefined;\n\nexport class RequestManager {\n _transformRequestFn: RequestTransformFunction;\n\n constructor(transformRequestFn?: RequestTransformFunction) {\n this._transformRequestFn = transformRequestFn;\n }\n\n transformRequest(url: string, type: ResourceType) {\n if (this._transformRequestFn) {\n return this._transformRequestFn(url, type) || {url};\n }\n\n return {url};\n }\n\n setTransformRequest(transformRequest: RequestTransformFunction) {\n this._transformRequestFn = transformRequest;\n }\n}\n\n","import Protobuf from 'pbf';\nimport VT from '@mapbox/vector-tile';\n\nimport {derefLayers as deref} from '@maplibre/maplibre-gl-style-spec';\nimport {Style} from '../../../src/style/style';\nimport {IReadonlyTransform} from '../../../src/geo/transform_interface';\nimport {Evented} from '../../../src/util/evented';\nimport {RequestManager} from '../../../src/util/request_manager';\nimport {WorkerTile} from '../../../src/source/worker_tile';\nimport {StyleLayerIndex} from '../../../src/style/style_layer_index';\n\nimport type {StyleSpecification} from '@maplibre/maplibre-gl-style-spec';\nimport type {WorkerTileResult} from '../../../src/source/worker_source';\nimport type {OverscaledTileID} from '../../../src/source/tile_id';\nimport type {TileJSON} from '../../../src/util/util';\nimport type {Map} from '../../../src/ui/map';\nimport type {IActor} from '../../../src/util/actor';\nimport {SubdivisionGranularitySetting} from '../../../src/render/subdivision_granularity_settings';\nimport {MessageType} from '../../../src/util/actor_messages';\nimport {MercatorTransform} from '../../../src/geo/projection/mercator_transform';\n\nclass StubMap extends Evented {\n style: Style;\n _requestManager: RequestManager;\n transform: IReadonlyTransform;\n\n constructor() {\n super();\n this._requestManager = new RequestManager();\n this.transform = new MercatorTransform();\n }\n\n getPixelRatio() {\n return devicePixelRatio;\n }\n\n setTerrain() {}\n\n _getMapId() {\n return 1;\n }\n}\n\nfunction createStyle(styleJSON: StyleSpecification): Promise