my-new-scenejs-node.js

SceneJs.MyNewNode = function(cfg) {

    cfg = cfg || {};

    /** Called when pre-visited during scene traversal
     */
    this.preVisit = function() {
         var backend = SceneJs.Backend.getNodeBackend(this.getType());
        if (backend) {
            var someData = {};
            backend.doSomethingToCanvas(someData);
        }
    };

    /** Called when post-visited during scene traversal
     */
    this.postVisit = function() {
        var backend = SceneJs.Backend.getNodeBackend(this.getType());
        if (backend) {
		var someMoreData = {};
 		backend.doSomethingElseToCanvas(someMoreData);
        }
    };
    
    /** Chain a call from this constructor to constructor of Node superclass
     */
    SceneJs.Node.superclass.constructor.call(this, SceneJs.apply(cfg, {
                getType: function() {
                    return 'my-node-type';
                }
            }));
};

/* Extend the Node class with our new MyNewNode class
 */
SceneJs.extend(SceneJs.MyNewNode, SceneJs.Node, {});