First commit

engine/skeleton.js

@@ -0,0 +1,109 @@
+kepler.skeleton(){
+	this.root;
+	this.bones = [];
+	this.name;
+	
+	this.rootTransformation;
+	
+	this.delta = 0;
+	this.currentAnimationMatrix;
+}
+
+kepler.skeleton.prototype.parse( boneInfo, rootNode ) {
+	var bone = kepler.createObject("bone");
+	
+	this.rootTransformation = kepler.matrix4.fromArray( rootNode.transformation );
+	
+	bone.isRoot = true;
+	bone.transformation = kepler.matrix4.fromArray( boneInfo.transformation );
+	bone.globalTransformation = bone.transformation;
+	
+	this.bones.push(bone);
+	this.root = bone;
+	
+	
+	for(var c = 0; c < boneInfo.children.length; c++) {
+		
+		this.parseChild(bone, boneInfo.children[c]);
+		
+	}
+
+}
+
+kepler.skeleton.prototype.parseChild( parentBone, childBoneInfo ) {
+	var bone = kepler.createObject("bone");
+	
+	bone.parent = parentBone;
+	bone.transformation = kepler.matrix4.fromArray( childBoneInfo.transformation );
+	bone.name = childBoneInfo.name;
+	bone.globalTransformation = kepler.matrix4.mul( bone.transformation,  parentBone.globalTransformation );
+	
+	this.bones.push(bone);
+	
+	parentBone.addChild(bone);
+	
+	//parse Children
+	if(childBoneInfo.children)
+	for(var c = 0; c < childBoneInfo.children.length; c++) {
+		
+		this.parseChild(bone, childBoneInfo.children[c]);
+		
+	}
+	
+}
+
+kepler.skeleton.prototype.getBoneByName( name  ) {
+	var bones = this.bones;
+	for(var c = 0; c < bones.length; c++) {
+		var bone = bones[c];
+
+		if(bone.name == name)
+			return bone;
+		
+	}
+	
+}
+
+kepler.skeleton.prototype.parseAnimation( channels ) {
+	for(var c = 0; c < channels.length; c++) {
+		var channel = channels[c];
+		var name = channel.name;
+		
+		var bone = this.getBoneByName(name);
+		
+		if(bone) {
+			bone.positionkeys = channel.positionkeys;
+			bone.rotationkeys = channel.rotationkeys;
+		}
+	}
+}
+
+kepler.skeleton.prototype.animate( bone, id ) {
+	bone.currentAnimationMatrix = kepler.matrix4.identity();
+	
+	if(bone.positionkeys) {
+		
+		
+		if(bone.positionkeys[id]) {
+			var currentTranslation = bone.positionkeys[id][1];
+			bone.currentAnimationMatrix = kepler.matrix4.setTranslation(bone.currentAnimationMatrix, currentTranslation);
+		}
+		
+		
+		if(bone.rotationkeys[id]) {
+			var currentRotation = bone.rotationkeys[id][1];
+			bone.currentAnimationMatrix = kepler.matrix4.rotateZYX(bone.currentAnimationMatrix, currentRotation);
+		
+		}
+		//console.log(bone.currentAnimationMatrix);
+		
+		if(bone.parent)
+			bone.globalTransformation = kepler.matrix4.mul( bone.currentAnimationMatrix,  bone.parent.globalTransformation );
+		//else	
+		//	bone.globalTransformation = kepler.matrix4.identity();
+	}
+
+	
+	return bone;
+	
+}