Add one more ColorMap

Gui/opensim/view/src/org/opensim/threejs/BookPathColorMap.java

@@ -0,0 +1,48 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package org.opensim.threejs;
+
+import java.util.prefs.Preferences;
+import org.opensim.modeling.GeometryPath;
+import org.opensim.modeling.State;
+import org.opensim.modeling.Vec3;
+import org.opensim.utils.TheApp;
+
+/**
+ *
+ * @author Ayman-NMBL
+ * 
+ * Color map used to generate figures for the book
+ */
+public class BookPathColorMap implements PathColorMap {
+
+    @Override
+    public Vec3 getColor(GeometryPath path, State state, double activation) {
+        //updateWeight ();
+
+        Vec3 activationBasedColor = path.getColor(state);
+        if (activation > 0){
+            activationBasedColor = new Vec3(activation, 0, 1-activation);
+        }
+        double act = activationBasedColor.get(0);
+
+        activationBasedColor.set(0,rChannel(act));
+        activationBasedColor.set(1,gChannel(act));
+        activationBasedColor.set(2,bChannel(act));
+        return activationBasedColor;
+    }
+    double rChannel(double a){
+        return (a <= 0.3) ? (-0.299*a + 0.6779) : (a*(-0.1525*a + 0.3655) + 0.4923);
+    }
+    double gChannel(double a){
+        return (a*(a*(-0.6125*a + 0.9872) - 1.026) + 0.7824);
+    }
+    double bChannel(double a){
+        return (a*(0.2436*a - 0.957) + 0.8963);
+    }
+
+}
+

Gui/opensim/view/src/org/opensim/threejs/ModelVisualizationJson.java

@@ -92,6 +92,7 @@ public PathColorMap getCurrentPathColorMap() {
     static {
         PathColorMapFactory.registerPathColorMap("Classic", new LegacyPathColorMap());
         PathColorMapFactory.registerPathColorMap("Modern", new ModernPathColorMap());
+        PathColorMapFactory.registerPathColorMap("Book", new BookPathColorMap());
     }
     /**
      * @param currentPathColorMap the currentPathColorMap to set