three.js traverse scenegraph and trigger event from all objects found

main_rods.js

function render() {
	var t = new Date().getTime() / 1000; // unixtime
	var dt = clock.getDelta();

	dispatchSceneGraphEvent(scene, {type: 'preRender', t: t, dt: dt});

	renderer.clear(true, true, true);
	renderer.render(scene, camera);
}

/**
 * traverse the scenegraph and dispatch an event from every object found
 *  example usage: dispatchSceneGraphEvent( scene, {type: 'render', time: clock.getElapsedTime()} );
 * @param parent
 * @param event
 */
function dispatchSceneGraphEvent(parent, event) {
	parent.dispatchEvent(event);
	for (var i in parent.children)
		dispatchSceneGraphEvent(parent.children[i], event);
}