Clean: Update glossiness API, to be able to have a default specular color if none provided

Author: Farhad Ghayour

webgl-renderables/Mesh.js

@@ -51,9 +51,12 @@ function Mesh (node, options) {
         expressions: {},
         geometry: null,
         flatShading: null,
-        glossiness: null,
         positionOffset: null,
-        normals: null
+        normals: null,
+        glossiness: {
+            factor: null,
+            color: [0, 0, 0]
+        }
     };
 
     if (options) this.setDrawOptions(options);
@@ -292,19 +295,24 @@ Mesh.prototype.getNormals = function getNormals (materialExpression) {
  *
  * @return {Mesh} Mesh
  */
-Mesh.prototype.setGlossiness = function setGlossiness(glossiness, strength) {
+Mesh.prototype.setGlossiness = function setGlossiness(glossiness, specularColor) {
     var isMaterial = glossiness.__isAMaterial__;
-    var isColor = !!glossiness.getNormalizedRGB;
+    var hasSpecularColor = specularColor && specularColor.getNormalizedRGB;
 
     if (isMaterial) {
-        this.value.glossiness = [null, null];
+        this.value.glossiness.factor = null;
         this.value.expressions.glossiness = glossiness;
     }
-    else if (isColor) {
+    else {
         this.value.expressions.glossiness = null;
-        this.value.glossiness = [glossiness, strength || 20];
-        glossiness = glossiness ? glossiness.getNormalizedRGB() : [0, 0, 0];
-        glossiness.push(strength || 20);
+        this.value.glossiness.factor = glossiness;
+        var glossinessValue = this.value.glossiness.color;
+        if (hasSpecularColor) {
+            this.value.glossiness.color = specularColor;
+            glossinessValue = this.value.glossiness.color.getNormalizedRGB();
+        }
+        glossinessValue.push(this.value.glossiness.factor);
+        glossiness = glossinessValue;
     }
 
     if (this._initialized) {
@@ -441,11 +449,11 @@ Mesh.prototype.onUpdate = function onUpdate() {
             this._node.sendDrawCommand(this.value.color.getNormalizedRGBA());
             this._node.requestUpdateOnNextTick(this._id);
         }
-        if (this.value.glossiness && this.value.glossiness[0] && this.value.glossiness[0].isActive()) {
+        if (this.value.glossiness.color.isActive && this.value.glossiness.color.isActive()) {
             this._node.sendDrawCommand('GL_UNIFORMS');
             this._node.sendDrawCommand('u_glossiness');
-            var glossiness = this.value.glossiness[0].getNormalizedRGB();
-            glossiness.push(this.value.glossiness[1]);
+            var glossiness = this.value.glossiness.color.getNormalizedRGB();
+            glossiness.push(this.value.glossiness.factor);
             this._node.sendDrawCommand(glossiness);
             this._node.requestUpdateOnNextTick(this._id);
         }
@@ -640,7 +648,7 @@ Mesh.prototype.draw = function draw () {
 
     if (value.geometry != null) this.setGeometry(value.geometry);
     if (value.color != null) this.setBaseColor(value.color);
-    if (value.glossiness != null) this.setGlossiness.apply(this, value.glossiness);
+    if (value.glossiness.factor != null) this.setGlossiness.apply(this, value.glossiness.factor);
     if (value.drawOptions != null) this.setDrawOptions(value.drawOptions);
     if (value.flatShading != null) this.setFlatShading(value.flatShading);