[AS 3] Papervision Random Cube Spin

I just wanted to play around a little more with the materials available for Papervision, not to mention I found this tutorial (http://labs.zeh.com.br/blog/?p=95) and used the tutorial’s code as my base. This was also a good time to get use to using Tweener. One note is that I used a MovieClip in my library to materialize a side of the cube I had an issue with not making the registration point of the MovieClip the top left area - I should have realized this as this is documented.

Here is the document class:

package {

	import flash.display.*;
	import flash.events.*;
	import flash.ui.Keyboard;

	import org.papervision3d.cameras.*;
	import org.papervision3d.events.*;
	import org.papervision3d.materials.*;
	import org.papervision3d.objects.*;
	import org.papervision3d.scenes.*;
	import fl.controls.Button;

	import org.papervision3d.core.proto.DisplayObjectContainer3D;

	import caurina.transitions.Tweener;

	public class PapervisionRandomSpin extends Sprite {

		private var container:Sprite;
		private var scene:Scene3D;
		private var freeCamera:FreeCamera3D;
		private var rootNode:DisplayObject3D;

		private var ml:MaterialsList = new MaterialsList();
		private var bmp:BitmapFileMaterial = new BitmapFileMaterial("http://manewc.com/projects/flash/PapervisionCubeSides/ski.jpg");
		private var customcube:Cube;

		private var randomBtn:Button;

		public function PapervisionRandomSpin() {
			// Main setup
			stage.quality = "HIGH";
			stage.scaleMode = "noScale";

			// Creates container
			container = new Sprite();
			addChild(container);
			container.x = 200;
			container.y = 230;

			// Create scene
			scene = new Scene3D(container);

			// Create camera
			freeCamera = new FreeCamera3D();
			freeCamera.zoom = 50;
			freeCamera.y = 0;
			freeCamera.x = -100;
			freeCamera.z = -6000;

			rootNode = new DisplayObject3D("rootNode");
			scene.addChild(rootNode);

			var ml:MaterialsList = new MaterialsList();
			ml.addMaterial(bmp, 'face1');
			ml.addMaterial(new ColorMaterial(Math.random() * 0xffffff), 'face2');
			ml.addMaterial(bmp, 'face3');
			ml.addMaterial(new ColorMaterial(Math.random() * 0xffffff), 'face4');
			// mcCircle is the linkage name to my movie clip in the .fla library
			ml.addMaterial(new MovieAssetMaterial("mcCircle"), 'face5');
			ml.addMaterial(new ColorMaterial(Math.random() * 0x336699), 'face6');

			customcube = new Cube( ml, 200, 200, 200, 1, 1, 1 );
			rootNode.addChild( customcube, "myCube01" );

			var randomBtn = new Button();
            randomBtn.width = 100;
            randomBtn.height = 30;
            randomBtn.move ( stage.stageWidth - randomBtn.width - 10, stage.stageHeight - randomBtn.height - 10 );
            randomBtn.label = "Random Spin";
            addChild(randomBtn);
            randomBtn.addEventListener(MouseEvent.CLICK, randomSpin);

			setChildIndex(container, 0);

			addEventListener( Event.ENTER_FRAME, loop3D );
		}

		private function loop3D( event :Event ):void {
			scene.renderCamera(freeCamera);
		}

		private function randomSpin(event:Event):void {
			Tweener.addTween(rootNode, {rotationY:Math.random() * 360, time:Math.random() * 10, transition:"easeinoutexpo"});
			Tweener.addTween(rootNode, {rotationZ:Math.random() * 360, time:Math.random() * 10, transition:"easeinoutexpo"});
			Tweener.addTween(rootNode, {rotationX:Math.random() * 360, time:Math.random() * 10, transition:"easeinoutexpo"});
		}
	}
}

Here is my document class