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xcharts0.cpp
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/*
** Astrolog (Version 7.20) File: xcharts0.cpp
**
** IMPORTANT NOTICE: Astrolog and all chart display routines and anything
** not enumerated below used in this program are Copyright (C) 1991-2021 by
** Walter D. Pullen ([email protected], http://www.astrolog.org/astrolog.htm).
** Permission is granted to freely use, modify, and distribute these
** routines provided these credits and notices remain unmodified with any
** altered or distributed versions of the program.
**
** The main ephemeris databases and calculation routines are from the
** library SWISS EPHEMERIS and are programmed and copyright 1997-2008 by
** Astrodienst AG. The use of that source code is subject to the license for
** Swiss Ephemeris Free Edition, available at http://www.astro.com/swisseph.
** This copyright notice must not be changed or removed by any user of this
** program.
**
** Additional ephemeris databases and formulas are from the calculation
** routines in the program PLACALC and are programmed and Copyright (C)
** 1989,1991,1993 by Astrodienst AG and Alois Treindl ([email protected]). The
** use of that source code is subject to regulations made by Astrodienst
** Zurich, and the code is not in the public domain. This copyright notice
** must not be changed or removed by any user of this program.
**
** The original planetary calculation routines used in this program have
** been copyrighted and the initial core of this program was mostly a
** conversion to C of the routines created by James Neely as listed in
** 'Manual of Computer Programming for Astrologers', by Michael Erlewine,
** available from Matrix Software.
**
** Atlas composed using data from https://www.geonames.org/ licensed under a
** Creative Commons Attribution 4.0 License. Time zone changes composed using
** public domain TZ database: https://data.iana.org/time-zones/tz-link.html
**
** The PostScript code within the core graphics routines are programmed
** and Copyright (C) 1992-1993 by Brian D. Willoughby ([email protected]).
**
** More formally: This program is free software; you can redistribute it
** and/or modify it under the terms of the GNU General Public License as
** published by the Free Software Foundation; either version 2 of the
** License, or (at your option) any later version. This program is
** distributed in the hope that it will be useful and inspiring, but
** WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
** General Public License for more details, a copy of which is in the
** LICENSE.HTM file included with Astrolog, and at http://www.gnu.org
**
** Initial programming 8/28-30/1991.
** X Window graphics initially programmed 10/23-29/1991.
** PostScript graphics initially programmed 11/29-30/1992.
** Last code change made 4/11/2021.
*/
#include "astrolog.h"
#ifdef GRAPH
/*
******************************************************************************
** Graphics Chart Utilities.
******************************************************************************
*/
// Given a string, draw it on the screen using the given color. The position
// of the text is based the saved positions of where we drew the text the last
// time the routine was called, being either directly below in the same column
// or in the same row just to the right. This is used by the sidebar drawing
// routine to print a list of text on the chart.
int DrawPrint(CONST char *sz, int m, int n)
{
static int xStart, x, y;
if (sz == NULL) { // Null string means just initialize position.
if (n >= 0) {
xStart = x = m; y = n;
} else
x += m;
return y;
}
if (y >= gs.yWin-1) // Don't draw if have scrolled off the chart bottom.
return y;
DrawColor(m);
if (CchSz(sz) > 25) // Adjust slightly to fit in 26 character strings.
x -= 3*gi.nScaleText;
DrawSz(sz, x, y, dtLeft | dtBottom | dtScale2);
// If the second parameter is TRUE, then stay on the same line, otherwise
// when FALSE go to the next line at the original column setting.
if (n)
x += CchSz(sz) * xFontT;
else {
x = xStart;
n = y;
y += yFontT;
}
return y;
}
// Draw a zodiac position on the screen, rounding and formatting as needed.
int DrawZodiac(real deg, int n)
{
if (us.fRound) {
if (us.nDegForm == 0)
deg = Mod(deg + (is.fSeconds ? rRound/60.0/60.0 : rRound/60.0));
else if (us.nDegForm == 1)
deg = Mod(deg + (is.fSeconds ? rRound/4.0/60.0 : rRound/4.0));
}
return DrawPrint(SzZodiac(deg), kSignB(SFromZ(deg)), n);
}
// Print chart info in the sidebar for a single chart. Called from
// DrawSidebar() 1-4 times depending on the relationship chart mode.
void DrawInfo(CI *pci, CONST char *szHeader, flag fAll)
{
char sz[cchSzDef], szT[cchSzDef];
if (szHeader != NULL)
DrawPrint(szHeader, gi.kiOn, fFalse);
if (*pci->nam)
DrawPrint(pci->nam, gi.kiLite, fFalse);
if (FNoTimeOrSpace(*pci))
DrawPrint("No time or space", gi.kiLite, fFalse);
else if (us.nRel == rcComposite)
DrawPrint("Composite chart", gi.kiLite, fFalse);
else {
// Standard case: Print date, time, location, and maybe more.
sprintf(sz, "%.3s %s", szDay[DayOfWeek(pci->mon, pci->day, pci->yea)],
SzDate(pci->mon, pci->day, pci->yea, fTrue));
DrawPrint(sz, gi.kiLite, fFalse);
DrawPrint(SzTim(pci->tim), gi.kiLite, fTrue);
sprintf(sz, " %s%cT Zone %s%s", is.fSeconds ? "" : "(", ChDst(pci->dst),
SzZone(pci->zon), is.fSeconds ? "" : ")");
DrawPrint(sz, gi.kiLite, fFalse);
if (*pci->loc)
DrawPrint(pci->loc, gi.kiLite, fFalse);
DrawPrint(SzLocation(pci->lon, pci->lat), gi.kiLite, fFalse);
if (fAll) {
sprintf(sz, "%s%s houses", us.fHouse3D == (gi.nMode != gSphere) ?
"3D " : (us.fHouse3D && gi.nMode == gSphere ? "2D " : ""),
szSystem[is.nHouseSystem]);
DrawPrint(sz, gi.kiLite, fFalse);
sprintf(sz, "%s, %s", !us.fSidereal ? "Tropical" : "Sidereal",
us.objCenter == oSun ?
(!us.fBarycenter ? "Heliocentric" : "Barycentric") :
(us.objCenter == oEar ?
(!us.fTopoPos ? "Geocentric" : "Topocentric") :
szObjDisp[us.objCenter]));
DrawPrint(sz, gi.kiLite, fFalse);
if (us.objRot1 != us.objRot2 || us.fObjRotWhole) {
sprintf(sz, "Rotate: %.3s to %.3s%s", szObjDisp[us.objRot1],
szObjDisp[us.objRot2], us.fObjRotWhole ? "'s sign" : "");
DrawPrint(sz, gi.kiLite, fFalse);
}
if (us.objOnAsc) {
sprintf(sz, "Solar: %.4s%s on %.3s", szObjDisp[NAbs(us.objOnAsc)-1],
us.fSolarWhole ? "'s sign" : "",
szObjDisp[us.objOnAsc > 0 ? oAsc : oMC]);
DrawPrint(sz, gi.kiLite, fFalse);
}
if (us.fEquator)
DrawPrint("Special: Equatorial lon.", gi.kiLite, fFalse);
if (us.fGeodetic)
DrawPrint("Special: Geodetic houses", gi.kiLite, fFalse);
if (us.fFlip)
DrawPrint("Special: Domal mode", gi.kiLite, fFalse);
if (us.fDecan)
DrawPrint("Special: Decan mode", gi.kiLite, fFalse);
if (us.rHarmonic != 1.0) {
FormatR(szT, us.rHarmonic, -5);
sprintf(sz, "Special: Harmonic %.7s", szT);
DrawPrint(sz, gi.kiLite, fFalse);
}
if (us.nDwad == 1)
DrawPrint("Special: Dwad mode", gi.kiLite, fFalse);
else if (us.nDwad > 1) {
sprintf(sz, "Special: Dwad level %d", us.nDwad);
DrawPrint(sz, gi.kiLite, fFalse);
}
if (us.fNavamsa)
DrawPrint("Special: Navamsa mode", gi.kiLite, fFalse);
if (us.fMoonMove) {
sprintf(sz, "Special: Overlay %ss",
FStar(us.objCenter) ? "planet" : "moon");
DrawPrint(sz, gi.kiLite, fFalse);
}
if (us.rDeltaT != rSmall) {
FormatR(szT, us.rDeltaT, -4);
sprintf(sz, "Special: Delta-T = %s", szT);
DrawPrint(sz, gi.kiLite, fFalse);
}
sprintf(sz, "Julian Day: %13.5f", JulianDayFromTime(is.T));
DrawPrint(sz, gi.kiLite, fFalse);
if (us.fProgress) {
sprintf(sz, "Progressed To: %s", SzDate(MonT, DayT, YeaT, 0));
DrawPrint(sz, gi.kiLite, fFalse);
}
}
}
}
#define szC1 "Chart #1"
#define szC2 "Chart #2"
#define szC3 "Chart #3"
#define szC4 "Chart #4"
#define DrawInfoSphere(ci, sz1, sz2) \
DrawInfo(&ci, gi.nMode != gSphere ? sz1 : sz2, fFalse)
// Print text showing the chart information and house and planet positions
// of a chart in a "sidebar" to the right of the chart in question. This is
// always done for the -v and -w graphic wheel charts unless the -v0 switch
// flag is also set, in which case none of the things here are done.
void DrawSidebar()
{
char sz[cchSzDef];
ET et;
int i, j, k, l, y, a, s;
real r;
// Decorate the chart a little.
if (gs.nDecaType == 1) {
// If decoration value 1, draw spider web lines in each corner.
DrawColor(gi.kiGray);
j = gs.nDecaLine + 1;
k = gs.yWin * gs.nDecaSize / 100;
l = gs.xWin * gs.nDecaSize / 100;
for (y = 0; y <= 1; y++)
for (i = 0; i <= 1; i++)
for (a = 1; a < j; a++)
DrawLine(i*(gs.xWin-1), y ? (gs.yWin-1-a*k/j) : a*k/j,
i ? gs.xWin-1-l+a*l/j : l-a*l/j, y*(gs.yWin-1));
} else if (gs.nDecaType == 2) {
// If decoration value 2, draw a moire pattern in each corner.
k = gs.yWin * gs.nDecaSize / 200;
l = gs.xWin * gs.nDecaSize / 200;
for (y = 0; y <= 1; y++)
for (i = 0; i <= 1; i++)
for (s = 0; s <= 1; s++)
for (a = 1; a < (s ? l : k)*2; a++) {
DrawColor(FOdd(a) ? gi.kiGray : gi.kiOff);
DrawLine(i ? gs.xWin-1-l : l, y ? gs.yWin-1-k : k,
s ? (i ? gs.xWin-1-a : a) : i*(gs.xWin-1),
s ? y*(gs.yWin-1) : (y ? gs.yWin-1-a : a));
}
}
if (!gs.fText || us.fVelocity) // Don't draw sidebar if -v0 flag is set.
return;
a = us.fAnsiChar;
us.fAnsiChar = (gs.nFont == 0 || (gs.ft != ftPS && gs.ft != ftWmf)) << 1;
DrawColor(gi.kiLite);
if (gs.fBorder)
DrawLine(gs.xWin-1, 0, gs.xWin-1, gs.yWin-1);
gs.xWin += xSideT;
DrawPrint(NULL, gs.xWin-xSideT+xFontT-gi.nScaleT, yFontT*7/5);
// Print chart header and setting information.
sprintf(sz, "%s %s", szAppName, szVersionCore);
DrawPrint(sz, gi.kiOn, fFalse);
if (us.nRel == rcComposite) {
DrawInfo(&ciMain, szC1, fFalse);
DrawPrint("", gi.kiLite, fFalse);
DrawInfo(&ciTwin, szC2, fFalse);
} else if (us.nRel == rcSynastry && !FEqCI(ciMain, ciTwin)) {
DrawInfo(&ciMain, szC1 ": Houses", fFalse);
DrawPrint("", gi.kiLite, fFalse);
DrawInfo(&ciTwin, szC2 ": Planets", fFalse);
} else if (us.nRel == rcDual && !FEqCI(ciMain, ciTwin)) {
DrawInfoSphere(ciMain, "#1: Inner Ring + Houses", szC1 " + Houses");
DrawPrint("", gi.kiLite, fFalse);
DrawInfoSphere(ciTwin, "#2: Outer Ring + Planets", szC2);
} else if (us.nRel == rcTriWheel &&
!(FEqCI(ciMain, ciTwin) && FEqCI(ciTwin, ciThre))) {
DrawInfoSphere(ciMain, "#1: Outer Ring + Houses", szC1 " + Houses");
DrawPrint("", gi.kiLite, fFalse);
DrawInfoSphere(ciTwin, "#2: Middle Ring", szC2);
DrawPrint("", gi.kiLite, fFalse);
DrawInfoSphere(ciThre, "#3: Inner Ring + Planets", szC3);
} else if (us.nRel == rcQuadWheel && !(FEqCI(ciMain, ciTwin) &&
FEqCI(ciTwin, ciThre) && FEqCI(ciThre, ciFour))) {
DrawInfoSphere(ciMain, "#1: Outer Ring + Houses", szC1 " + Houses");
DrawPrint("", gi.kiLite, fFalse);
DrawInfoSphere(ciTwin, "#2: Middle Outer Ring", szC2);
DrawPrint("", gi.kiLite, fFalse);
DrawInfoSphere(ciThre, "#3: Middle Inner Ring", szC3);
DrawPrint("", gi.kiLite, fFalse);
DrawInfoSphere(ciFour, "#4: Inner Ring + Planets", szC4);
} else if (us.nRel == rcTransit || us.nRel == rcProgress) {
DrawInfoSphere(ciMain, "#1: Inner Ring (Natal)", szC1 ": Natal");
DrawPrint("", gi.kiLite, fFalse);
if (us.nRel == rcTransit)
DrawInfoSphere(ciTwin, "#2: Outer Ring (Transit)", szC2 ": Transit");
else
DrawInfoSphere(ciTwin, "#2: Outer Ring (Progress)", szC2 ": Progress");
} else
DrawInfo(&ciMain, NULL, fTrue);
// Print house cusp positions.
DrawPrint("", gi.kiLite, fFalse);
for (i = 1; i <= cSign; i++) {
sprintf(sz, "%2d%s house: ", i, szSuffix[i]);
y = DrawPrint(sz, kSignB(i), fTrue);
if (!is.fSeconds && (gs.nScale == 100 ||
gs.nFont == 0 || !gi.fFile || gs.ft == ftBmp) && y < gs.yWin-1) {
s = gi.nScale;
gi.nScale = gi.nScaleTextT;
DrawSign(SFromZ(chouse[i]),
gs.xWin-12*gi.nScale, y-(yFont/2-1)*gi.nScale);
gi.nScale = s;
}
DrawZodiac(chouse[i], fFalse);
}
// Print planet positions.
DrawPrint("", gi.kiLite, fFalse);
for (j = 0; j <= oNorm; j++) {
i = rgobjList[j];
if (!(FProper2(i) &&
(!FCusp(i) || RAbs(planetalt[i]) > rSmall ||
MinDistance(planet[i], chouse[i-cuspLo+1]) > rSmall)))
continue;
sprintf(sz, is.fSeconds ? "%-3.3s: " : "%-4.4s: ", szObjDisp[i]);
DrawPrint(sz, kObjB[i], fTrue);
y = DrawZodiac(planet[i], fTrue);
if (!is.fSeconds && i < starLo && gi.nMode != gSector && (gs.nScale ==
100 || gs.nFont == 0 || !gi.fFile || gs.ft == ftBmp) && y < gs.yWin-1) {
// Don't draw planet glyph in PS or Metafile, since can't be resized.
s = gi.nScale;
gi.nScale = gi.nScaleTextT;
DrawObject(-i-1, gs.xWin-12*gi.nScale, y-(yFont/2-1)*gi.nScale);
gi.nScale = s;
}
sprintf(sz, "%c ", ret[i] < 0.0 ? chRet : ' ');
DrawPrint(sz, gi.kiOn, fTrue);
if (gi.nMode != gSector || !is.fSeconds) {
is.fSeconds = fFalse;
DrawPrint(SzAltitude(planetalt[i]), gi.kiLite, fTrue);
is.fSeconds = us.fSeconds;
}
if (gi.nMode == gSector) {
r = GFromO(cp1.obj[i]); s = (int)r + 1;
if (!is.fSeconds)
sprintf(sz, " %2d", s);
else
sprintf(sz, "%6.3f%c", r + 1.0, pluszone[s] ? '+' : '-');
DrawPrint(sz, pluszone[s] ? kRedB : kDkGreenB, fFalse);
} else
DrawPrint("", gi.kiOn, fFalse);
}
// Print star positions.
for (i = starLo; i <= starHi; i++) {
s = rgobjList[i];
if (!FProper(s))
continue;
sprintf(sz, is.fSeconds ? "%3.3s: " : "%4.4s: ", szObjDisp[s]);
DrawPrint(sz, kObjB[s], fTrue);
DrawZodiac(planet[s], fTrue);
DrawPrint(" ", gi.kiOn, fTrue);
if (gi.nMode != gSector || !is.fSeconds) {
is.fSeconds = fFalse;
DrawPrint(SzAltitude(planetalt[s]), gi.kiLite, fTrue);
is.fSeconds = us.fSeconds;
}
if (gi.nMode == gSector) {
r = GFromO(cp1.obj[s]); s = (int)r + 1;
if (!is.fSeconds)
sprintf(sz, " %2d", s);
else
sprintf(sz, "%6.3f%c", r + 1.0, pluszone[s] ? '+' : '-');
DrawPrint(sz, pluszone[s] ? kRedB : kDkGreenB, fFalse);
} else
DrawPrint("", gi.kiOn, fFalse);
}
// Print element table information.
DrawPrint("", gi.kiLite, fFalse);
CreateElemTable(&et);
sprintf(sz, "Fire: %d,", et.coElem[eFir]);
DrawPrint(sz, kElemB[eFir], fTrue);
sprintf(sz, " Earth: %d,", et.coElem[eEar]);
DrawPrint(sz, kElemB[eEar], fFalse);
sprintf(sz, "Air : %d,", et.coElem[eAir]);
DrawPrint(sz, kElemB[eAir], fTrue);
sprintf(sz, " Water: %d", et.coElem[eWat]);
DrawPrint(sz, kElemB[eWat], fFalse);
sprintf(sz, "Car: %d,", et.coMode[0]); DrawPrint(sz, kModeB(0), fTrue);
sprintf(sz, " Fix: %d,", et.coMode[1]); DrawPrint(sz, kModeB(1), fTrue);
sprintf(sz, " Mut: %d", et.coMode[2]); DrawPrint(sz, kModeB(2), fFalse);
sprintf(sz, "Yang: %d, Yin: %d", et.coYang, et.coYin);
DrawPrint(sz, gi.kiLite, fFalse);
if (et.coMC > 9 && et.coIC > 9 && et.coAsc > 9 && et.coDes > 9)
DrawPrint(NULL, -3*gi.nScaleText, -1);
sprintf(sz, "M: %d,", et.coMC); DrawPrint(sz, kElemB[eEar], fTrue);
sprintf(sz, " N: %d,", et.coIC); DrawPrint(sz, kElemB[eWat], fTrue);
sprintf(sz, " A: %d,", et.coAsc); DrawPrint(sz, kElemB[eFir], fTrue);
sprintf(sz, " D: %d", et.coDes); DrawPrint(sz, kElemB[eAir], fFalse);
sprintf(sz, "Ang: %d,", et.coModeH[0]); DrawPrint(sz, kModeB(0), fTrue);
sprintf(sz, " Suc: %d,", et.coModeH[1]); DrawPrint(sz, kModeB(1), fTrue);
sprintf(sz, " Cad: %d", et.coModeH[2]); DrawPrint(sz, kModeB(2), fFalse);
sprintf(sz, "Learn: %d, Share: %d", et.coLearn, et.coShare);
DrawPrint(sz, gi.kiLite, fFalse);
us.fAnsiChar = a;
}
// This is a subprocedure of XChartWheel() and XChartWheelRelation(). Draw
// the outer sign and house rings for a wheel chart at the specified zodiac
// locations and at the given radius values.
void DrawWheel(real *xsign, real *xhouse, int cx, int cy, real unitx,
real unity, real r1, real r2, real r3, real r4, real r5)
{
int i, j, k;
real px, py, temp, ra, rb;
flag fVector = (gs.ft == ftPS || gs.ft == ftWmf), fSav;
// Draw Ascendant/Descendant and Midheaven/Nadir lines across whole chart.
DrawColor(gs.fColorHouse ? kSignB(sAri) : gi.kiLite);
DrawDash(cx+POINT1(unitx, 0.99, PX(xhouse[sAri])),
cy+POINT1(unity, 0.99, PY(xhouse[sAri])), cx, cy, !gs.fColor);
if (gs.fColorHouse) DrawColor(kSignB(sLib));
DrawDash(cx+POINT1(unitx, 0.99, PX(xhouse[sLib])),
cy+POINT1(unity, 0.99, PY(xhouse[sLib])), cx, cy, !gs.fColor);
if (gs.fColorHouse) DrawColor(kSignB(sCap));
DrawDash(cx+POINT1(unitx, 0.99, PX(xhouse[sCap])),
cy+POINT1(unity, 0.99, PY(xhouse[sCap])), cx, cy, !gs.fColor);
if (gs.fColorHouse) DrawColor(kSignB(sCan));
DrawDash(cx+POINT1(unitx, 0.99, PX(xhouse[sCan])),
cy+POINT1(unity, 0.99, PY(xhouse[sCan])), cx, cy, !gs.fColor);
// Draw small five or one degree increments around the zodiac sign ring.
fSav = us.fHouse3D; us.fHouse3D = fFalse;
for (i = 0; i < nDegMax; i++) {
temp = PZ(HousePlaceInX((real)i, 0.0));
px = PX(temp); py = PY(temp);
DrawColor(i%10 ? gi.kiGray : (gs.fColorSign ? kSignB(i/30 + 1) : gi.kiOn));
if ((gs.fColor || fVector) && i%5 > 0) {
ra = r3 + (r4 - r3) * 0.20;
rb = r3 + (r4 - r3) * 0.80;
} else {
ra = r3; rb = r4;
}
DrawDash(cx+POINT1(unitx, ra, px), cy+POINT1(unity, ra, py),
cx+POINT2(unitx, rb, px), cy+POINT2(unity, rb, py),
(!gs.fColor && !fVector && i%5 > 0));
}
us.fHouse3D = fSav;
// Draw hatches within houses, if -YRd switch set.
k = us.nSignDiv;
if (k > 1) {
ra = r1 + (r2 - r1) * 0.25;
rb = r1 - (r2 - r1) * 0.25;
for (i = 1; i <= cSign; i++) {
for (j = 0; j < k; j++) {
temp = xhouse[i] +
MinDifference(xhouse[i], xhouse[Mod12(i+1)]) * (real)j / (real)k;
DrawColor(gs.fColorHouse ? kSignB(i) : gi.kiOn);
DrawLine(cx+POINT2(unitx, j ? ra : r1, PX(temp)),
cy+POINT2(unity, j ? ra : r1, PY(temp)),
cx+POINT1(unitx, rb, PX(temp)),
cy+POINT1(unity, rb, PY(temp)));
}
}
}
// Draw circles for the zodiac sign and house rings.
DrawColor(gi.kiOn);
DrawCircle(cx, cy, (int)(unitx*0.95+rRound), (int)(unity*0.95+rRound));
DrawCircle(cx, cy, (int)(unitx*r4+rRound), (int)(unity*r4+rRound));
DrawCircle(cx, cy, (int)(unitx*r3+rRound), (int)(unity*r3+rRound));
DrawCircle(cx, cy, (int)(unitx*r1+rRound), (int)(unity*r1+rRound));
// Draw the glyphs for the signs and houses themselves.
for (i = 1; i <= cSign; i++) {
temp = xsign[i];
// Draw lines separating each sign and each house from each other.
DrawColor(gs.fColorSign ? kSignB(i) : gi.kiOn);
DrawLine(cx+POINT2(unitx, 0.95, PX(temp)),
cy+POINT2(unity, 0.95, PY(temp)),
cx+POINT1(unitx, r4, PX(temp)),
cy+POINT1(unity, r4, PY(temp)));
DrawColor(gs.fColorHouse ? kSignB(i) : gi.kiOn);
DrawLine(cx+POINT2(unitx, r3, PX(xhouse[i])),
cy+POINT2(unity, r3, PY(xhouse[i])),
cx+POINT1(unitx, r1, PX(xhouse[i])),
cy+POINT1(unity, r1, PY(xhouse[i])));
// Draw minor lines from non-angular houses to center of wheel.
if (gs.fColor && i%3 != 1) {
DrawColor(gs.fColorHouse ? kSignB(i) : gi.kiGray);
DrawDash(cx, cy, cx+POINT2(unitx, r1, PX(xhouse[i])),
cy+POINT2(unity, r1, PY(xhouse[i])), 1);
}
temp = Midpoint(temp, xsign[Mod12(i+1)]);
DrawColor(kSignB(i));
DrawSign(i, cx+POINT1(unitx, r5, PX(temp)),
cy+POINT1(unity, r5, PY(temp)));
temp = Midpoint(xhouse[i], xhouse[Mod12(i+1)]);
DrawHouse(i, cx+POINT1(unitx, r2, PX(temp)),
cy+POINT1(unity, r2, PY(temp)));
}
}
// Another subprocedure of XChartWheel() and XChartWheelRelation(). Draw a set
// of planets in a wheel chart, drawing each glyph and a line from it to a dot
// indicating the planet's actual location.
void DrawSymbolRing(real *symbol, real *xplanet, real *dir, int cx, int cy,
real unitx, real unity, real r1, real r2, real r3, real r4)
{
int i;
real temp;
for (i = is.nObj; i >= 0; i--) if (FProper(i)) {
if (gs.fLabel) {
temp = symbol[i];
DrawColor(dir[i] < 0.0 ? gi.kiGray : gi.kiOn);
DrawDash(cx+POINT1(unitx, r2, PX(xplanet[i])),
cy+POINT1(unity, r2, PY(xplanet[i])),
cx+POINT1(unitx, r3, PX(temp)),
cy+POINT1(unity, r3, PY(temp)),
(ret[i] < 0.0 ? 1 : 0) - gs.fColor);
DrawObject(i, cx+POINT1(unitx, r4, PX(temp)),
cy+POINT1(unity, r4, PY(temp)));
} else
DrawColor(kObjB[i]);
if (gs.fHouseExtra && us.nRel >= rcNone)
DrawSpot(cx+POINT1(unitx, r1, PX(xplanet[i])),
cy+POINT1(unity, r1, PY(xplanet[i])));
else
DrawPoint(cx+POINT1(unitx, r1, PX(xplanet[i])),
cy+POINT1(unity, r1, PY(xplanet[i])));
}
}
// Another drawing routine similar to above, plot a set of planets within a 2D
// expanse of pixels, so that there's a minimum of overlapping glyphs.
void DrawObjects(ObjDraw *rgod, int cod, int zEdge)
{
int zGlyph, zGlyph2, zGlyphS, zGlyphS2, i, j, k, k2, obj;
KI kSav;
// Define or adjust some initial values.
zGlyph = 7*gi.nScale; zGlyphS = 9*gi.nScaleTextT;
zGlyph2 = zGlyph << 1; zGlyphS2 = zGlyphS << 1;
// Assume glyph is positioned below actual point, unless say otherwise.
for (i = 0; i < cod; i++) if (rgod[i].f) {
obj = rgod[i].obj;
rgod[i].yg = rgod[i].y + (obj < starLo ? zGlyph : zGlyphS);
}
// Determine where to draw the glyphs in relation to the actual points,
// so that the glyphs aren't drawn on top of each other if possible.
for (i = 0; i < cod; i++) if (rgod[i].f) {
obj = rgod[i].obj;
k = k2 = gs.xWin + gs.yWin;
// For each planet, will draw glyph either right over or right under the
// actual planet location point. Find out the closest distance of any
// other planet assuming glyph is placed at both possibilities.
for (j = 0; j < i; j++) if (rgod[j].f) {
k = Min(k, NAbs(rgod[i].x-rgod[j].x) + NAbs(rgod[i].yg-rgod[j].yg));
k2 = Min(k2, NAbs(rgod[i].x-rgod[j].x) + NAbs(rgod[i].yg-rgod[j].yg -
zGlyph2));
}
// Normally, put the glyph right below the actual point. If however
// another planet is close enough to have their glyphs overlap, and the
// above location is better, then will draw the glyph above instead.
if ((k < zGlyph2 || k2 < zGlyph2) && k < k2)
rgod[i].yg -= (obj < starLo ? zGlyph2 : zGlyphS2);
}
// Draw planet glyphs.
for (i = cod-1; i >= 0; i--) if (rgod[i].f) {
if (zEdge > 0 && !FInRect(rgod[i].x, rgod[i].yg,
zEdge, zEdge, gs.xWin-zEdge, gs.yWin-zEdge))
continue;
obj = rgod[i].obj;
if (rgod[i].kv != ~0) {
kSav = kObjB[obj]; kObjB[obj] = rgod[i].kv;
}
DrawObject(rgod[i].obj, rgod[i].x, rgod[i].yg);
if (rgod[i].kv != ~0)
kObjB[obj] = kSav;
}
// Draw dots for actual object location.
for (i = cod-1; i >= 0; i--) if (rgod[i].f) {
if (zEdge > 0 && !FInRect(rgod[i].x, rgod[i].y,
zEdge, zEdge, gs.xWin-zEdge, gs.yWin-zEdge))
continue;
obj = rgod[i].obj;
DrawColor(rgod[i].kv != ~0 ? rgod[i].kv : kObjB[obj]);
// Draw small or large dot near glyph indicating exact object location.
if ((gi.nMode == gHorizon && (gs.fAlt || obj > oNorm)) ||
(gi.nMode == gOrbit && gs.fAlt))
DrawPoint(rgod[i].x, rgod[i].y);
else
DrawSpot(rgod[i].x, rgod[i].y);
}
}
// Draw an aspect line between two points in a wheel chart.
void DrawAspectLine(int obj1, int obj2, int cx, int cy,
real deg1, real deg2, real rx, real ry, real rz)
{
int asp = grid->n[obj1][obj2], orb = grid->v[obj1][obj2],
x1, y1, x2, y2, nDash, nSav, col;
// Get color of aspect. Modify it through AstroExpression if one defined.
col = kAspB[asp];
#ifdef EXPRESS
if (!us.fExpOff && FSzSet(us.szExpColAsp)) {
ExpSetN(iLetterW, obj1);
ExpSetN(iLetterX, asp);
ExpSetN(iLetterY, obj2);
ExpSetN(iLetterZ, col);
ParseExpression(us.szExpColAsp);
col = NExpGet(iLetterZ);
if (!FValidColor(col))
col = 0;
}
#endif
DrawColor(col);
// Compute coordinates of line, and draw it.
x1 = cx + POINT1(rx, rz, PX(deg1));
y1 = cy + POINT1(ry, rz, PY(deg1));
x2 = cx + POINT1(rx, rz, PX(deg2));
y2 = cy + POINT1(ry, rz, PY(deg2));
if ((gs.nDashMax >= 0) != gs.fAlt)
nDash = NAbs(orb / (60*60*2));
else
nDash = NAbs(orb) * NAbs(gs.nDashMax) /
(int)(GetOrb(obj1, obj2, asp)*3600.0);
DrawDash(x1, y1, x2, y2, nDash);
// Draw aspect glyph over middle of line.
if (gs.fLabelAsp) {
nSav = gi.nScale;
gi.nScale = gi.nScaleTextT;
DrawAspect(asp, (x1 + x2) >> 1, (y1 + y2) >> 1);
gi.nScale = nSav;
}
}
/*
******************************************************************************
** Map Chart Routines.
******************************************************************************
*/
// Another stream reader, this one is used by the globe drawing routine. For
// the next body of land/water, return its name (and color), its longitude and
// latitude, and a vector description of its outline.
flag FReadWorldData(CONST char **nam, CONST char **loc, CONST char **lin)
{
static CONST char **psz = szWorldData;
int i;
*loc = *psz++;
*lin = *psz++;
*nam = *psz++;
if (*loc[0]) {
if (gs.fPrintMap && gi.fFile) {
i = **nam - '0';
AnsiColor(i ? kRainbowA[i] : kDkBlueA);
PrintSz(*nam+1); PrintL();
}
return fTrue;
}
psz = szWorldData; // Reset stream when no data left.
return fFalse;
}
// Enumerator to return line segments (and their color) composing Astrolog's
// map of the world. Used by astro-graph, map/globe, and nearest city charts.
flag EnumWorldLines(int *x1, int *y1, int *x2, int *y2, int *kRainbow)
{
static CONST char **psz;
static CONST char *lin;
static int xold, yold;
CONST char *nam, *loc;
char chCmd;
int lon, lat, x, y, i, k = -1;
// Call with Null pointer to initialize new enumeration.
if (x1 == NULL) {
psz = szWorldData;
lin = "";
return fTrue;
}
// Get the next chunk of data to process.
if (!*lin) {
// Get data for the next coastline piece.
loc = *psz++;
lin = *psz++;
nam = *psz++;
if (loc[0]) {
i = nam[0]-'0';
if (gs.fPrintMap && gi.fFile) {
AnsiColor(i ? kRainbowA[i] : kDkBlueA);
PrintSz(nam+1); PrintL();
}
} else
return fFalse;
k = i;
lon = (loc[0] == '+' ? 1 : -1)*
((loc[1]-'0')*100 + (loc[2]-'0')*10 + (loc[3]-'0'));
lat = (loc[4] == '+' ? 1 : -1)*((loc[5]-'0')*10 + (loc[6]-'0'));
xold = nDegHalf - lon;
yold = 90 - lat;
}
x = xold; y = yold;
// Get the next unit from the world map string.
chCmd = *lin++;
// Each unit is exactly one character in the coastline string.
if (chCmd == 'L' || chCmd == 'H' || chCmd == 'G')
x--;
else if (chCmd == 'R' || chCmd == 'E' || chCmd == 'F')
x++;
if (chCmd == 'U' || chCmd == 'H' || chCmd == 'E')
y--;
else if (chCmd == 'D' || chCmd == 'G' || chCmd == 'F')
y++;
// Take care of coordinate wrap around.
while (x >= nDegMax)
x -= nDegMax;
while (x < 0)
x += nDegMax;
*x1 = xold; *y1 = yold; *x2 = x; *y2 = y;
*kRainbow = k;
xold = x; yold = y;
return fTrue;
}
#ifdef CONSTEL
// Enumerator to return line segments (and their constellation) composing
// Astrolog's map of constellation boundaries. Used by local horizon,
// map/globe, chart sphere, and telescope charts.
flag EnumConstelLines(int *x1, int *y1, int *x2, int *y2, int *iConst)
{
static int isz, nC, xold = 0, yold = 0, xDelta, yDelta, xLo, xHi, yLo, yHi;
static CONST char *pch;
int lon, lat, x, y;
char chCmd;
flag fBlank;
// Call with Null pointer to initialize new enumeration.
if (x1 == NULL) {
isz = nC = 0;
pch = "";
return fTrue;
}
// Get the next chunk of data to process.
LNext:
x = xold; y = yold;
if (!*pch && nC <= 0) {
if (isz > 0) {
// If reached the end of current constellation, compute the center
// location in it based on lower and upper bounds that have been
// maintained, and print the name of the constellation there.
x = xLo + (xHi - xLo)*(szDrawConstel[isz][0]-'1')/8;
y = yLo + (yHi - yLo)*(szDrawConstel[isz][1]-'1')/8;
if (x < 0)
x += nDegMax;
else if (x > nDegMax)
x -= nDegMax;
*x1 = *x2 = x;
*y1 = *y2 = y;
*iConst = isz;
neg(isz);
return fTrue;
} else if (isz < 0)
neg(isz);
// Get data for the next constellation shape.
isz++;
if (isz > cCnstl)
return fFalse;
pch = szDrawConstel[isz];
lon = nDegMax -
(((pch[2]-'0')*10 + (pch[3]-'0'))*15 + (pch[4]-'0')*10 + (pch[5]-'0'));
lat = 90-((pch[6] == '-' ? -1 : 1) * ((pch[7]-'0')*10 + (pch[8]-'0')));
if (lon >= nDegMax)
lon -= nDegMax;
pch += 9;
xLo = xHi = xold = x = lon;
yLo = yHi = yold = y = lat;
}
// Get the next unit from the string to draw on the screen as a line. For
// constellations have a cache of how long should keep going in the previous
// direction, for example "u5" for up five moves pointer up five times
// without advancing string pointer.
fBlank = fFalse;
loop {
if (nC <= 0) {
chCmd = *pch++;
// Get the next direction and distance from constellation string.
if (fBlank = (chCmd == 'b'))
chCmd = *pch++;
xDelta = yDelta = 0;
switch (chCmd) {
case 'u': yDelta = -1; break; // Up
case 'd': yDelta = 1; break; // Down
case 'l': xDelta = -1; break; // Left
case 'r': xDelta = 1; break; // Right
case 'U': yDelta = -1; nC = (y-1)%10+1; break; // Up until
case 'D': yDelta = 1; nC = 10-y%10; break; // Down until
case 'L': xDelta = -1; nC = (x+599)%15+1; break; // Left until
case 'R': xDelta = 1; nC = 15-(x+600)%15; break; // Right until
default: PrintError("Bad constel enum."); // Shouldn't happen.
}
if (chCmd >= 'a')
nC = NFromPch(&pch); // Figure out how far to draw.
}
nC--;
x += xDelta; y += yDelta;
if (!fBlank)
break;
// Occasionally want to move the pointer without drawing anything.
xold = x; yold = y;
continue;
}
if (x < xLo) // Maintain bounding rectangle for this
xLo = x; // constellation if have crossed over it.
else if (x > xHi)
xHi = x;
if (y < yLo)
yLo = y;
else if (y > yHi)
yHi = y;
// Take care of coordinate wrap around.
*x1 = xold; *y1 = yold;
xold = x; yold = y;
if (!(x > *x1 || y > *y1)) // draw each line segment once instead of twice.
goto LNext;
while (x >= nDegMax)
x -= nDegMax;
while (x < 0)
x += nDegMax;
*x2 = x; *y2 = y;
*iConst = 0;
return fTrue;
}
#endif
// Given longitude and latitude values on a globe, return the window
// coordinates corresponding to them. In other words, project the globe
// onto the view plane, and return where our coordinates got projected to,
// as well as whether our location is hidden on the back side of the globe.
flag FGlobeCalc(real x1, real y1, int *u, int *v, CONST CIRC *pcr, real deg)
{
real rT, siny1, lonMC, latMC;
// Chart sphere coordinates are relative to the local horizon.
if (gi.nMode == gSphere) {
y1 = rDegQuad - y1;
if (!gs.fEcliptic) {
x1 = Mod(x1 + is.lonMC + rDegQuad);
EquToLocal(&x1, &y1, rDegQuad - is.latMC);
} else {
EclToEqu(&x1, &y1);
x1 = Mod(Tropical(x1) - rDegQuad);
}
y1 = rDegQuad - y1;
}
// Globe coordinates may be relative to the ecliptic.
if ((gi.nMode == gGlobe || gi.nMode == gPolar) && gs.fEcliptic) {
y1 = rDegQuad - y1;
if (!gs.fConstel) {
lonMC = Tropical(is.MC); latMC = 0.0;
EclToEqu(&lonMC, &latMC);
x1 = Mod(x1 + lonMC - rDegHalf + Lon);
EquToEcl(&x1, &y1);
x1 = Untropical(x1);
} else
EclToEqu(&x1, &y1);
y1 = rDegQuad - y1;
}
// Compute coordinates for a general globe invoked with -XG switch.
if (gi.nMode != gPolar) {
// Shift by current globe rotation value.
x1 = Mod(x1+deg);
// Do another coordinate shift if the globe's equator is tilted any.
if (gs.rTilt != 0.0) {
y1 = rDegQuad - y1;
CoorXform(&x1, &y1, gs.rTilt);
x1 = Mod(x1); y1 = rDegQuad - y1;
}
*v = pcr->yc + (int)((real)pcr->yr*-RCosD(y1) - rRound);
*u = pcr->xc + (int)((real)pcr->xr*-RCosD(x1)*RSinD(y1) - rRound);
return x1 > rDegHalf;
}
// Compute coordinates for a polar globe invoked with -XP switch.
siny1 = RSinD((gs.fSouth ? nDegHalf-y1 : y1) / 2.0);
rT = gs.fSouth ? rDegQuad+x1+deg : 270.0-x1-deg;
*v = pcr->yc + (int)(siny1*(real)pcr->yr*RSinD(rT) - rRound);
*u = pcr->xc + (int)(siny1*(real)pcr->xr*RCosD(rT) - rRound);
return fFalse;
}
// Given longitude and latitude values, return the pixel coordinates
// corresponding to them. Covers maps, globes, and chart spheres.
flag FMapCalc(real x1, real y1, int *xp, int *yp, flag fGlobe, flag fSky,
real lonMC, real rT, int nScl, CONST CIRC *pcr, real deg)
{
int j, k, u, v;
if (fSky >= 0) {
if (!fSky)
x1 = lonMC - x1;
x1 = Mod(rDegHalf - rT - x1);
y1 = rDegQuad - y1;
}
if (fGlobe) {
j = FGlobeCalc(x1, y1, &u, &v, pcr, deg) ? nNegative : u;
k = v;
} else {
j = (int)(x1 * (real)nScl);
k = (int)(y1 * (real)nScl);
if (gs.fMollewide)
j = 180*nScl + (int)((x1-180.0) * RMollewide(y1-90.0) / 180.0 + rRound);
}
*xp = j; *yp = k;
return (j == nNegative);
}
// Draw one "Ley line" on the world map, based coordinates given in terms of
// longitude and vertical fractional distance from the center of the earth.
void DrawLeyLine(real l1, real f1, real l2, real f2)
{
l1 = Mod(l1); l2 = Mod(l2);
// Convert vertical fractional distance to a corresponding coordinate.
f1 = rDegQuad - RAsin(f1)/rPiHalf*rDegQuad;
f2 = rDegQuad - RAsin(f2)/rPiHalf*rDegQuad;