２DオブジェクトをMatrix3Dで操作する

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" width="600" height="400"
	applicationComplete="this._init();">
	<mx:Text text="Belcro.net
Papervision3D Matrix3D" x="10" y="167" width="579" height="100" textAlign="center" fontSize="33"/>
	<mx:Script>
		<![CDATA[
			import mx.effects.Glow;
			import org.papervision3d.core.math.Matrix3D;
			import image.Circle;
			
			private var _circle_list:Array;
			private var _speed:Number = 0;
			private var _xspeed:Number = 1;
			/*-------------------------------------------------
			* _init
			-------------------------------------------------*/
			private function _init():void
			{
				this.stage.scaleMode = StageScaleMode.NO_SCALE;
				this.stage.align = StageAlign.TOP_LEFT;
				
				this._circle_list = new Array();
				
				for(var i:uint=0; i<30; i++)
				{
					var circle:Circle = new Circle();
					this._circle_list.push(circle);
					this.stage.addChild(circle);
				}
				
				this.addEventListener(Event.ENTER_FRAME , this._enter_Frme_Event);
				this.stage.addEventListener(MouseEvent.MOUSE_DOWN , this._mouseDown);
				this.stage.addEventListener(MouseEvent.MOUSE_UP , this._mouseUp);
			}
			/*-------------------------------------------------
			* _mouseDown
			-------------------------------------------------*/
			private function _mouseDown(evn:Event):void
			{
				this._xspeed = 2;
			}
			/*-------------------------------------------------
			* _mouseUp
			-------------------------------------------------*/
			private function _mouseUp(evn:Event):void
			{
				this._xspeed = 1;
			}
			/*-------------------------------------------------
			* _enter_Frme_Event
			-------------------------------------------------*/
			private function _enter_Frme_Event(evn:Event):void
			{
				this._speed += (this._xspeed - this._speed) * 0.1;
				
				for(var i:uint=0; i<this._circle_list.length; i++)
				{
					var circle:Circle = this._circle_list[i] as Circle;
					
					circle.add(this._speed);
					
					var mat:Matrix3D = new Matrix3D(
						[
							1,1,1,
							1,0,0,
							0,0,0,
							0,0,0
						]
					);
					
					mat = Matrix3D.multiply(mat,Matrix3D.rotationX(circle.rot_x /180*Math.PI));
					mat = Matrix3D.multiply(mat,Matrix3D.rotationY(circle.rot_y /180*Math.PI));
					mat = Matrix3D.multiply(mat,Matrix3D.rotationZ(circle.rot_z /180*Math.PI));
					
					circle.x = mat.n11*100 + 280;
					circle.y = mat.n12*100 + 200;
					circle.scaleX = circle.scaleY = ((2+mat.n13) /4);
					
					circle.setPosZ(circle.scaleX * 20);
				}
			}
			
		]]>
	</mx:Script>
	
</mx:Application>

package image
{
	import flash.display.BlendMode;
	import flash.display.Sprite;
	import flash.filters.GlowFilter;

	public class Circle extends Sprite
	{
		
		public var rot_x:Number = 0;
		public var rot_y:Number = 0;
		public var rot_z:Number = 0;
		private var _rot_x:Number = 0;
		private var _rot_y:Number = 0;
		private var _rot_z:Number = 0;
		public var pos_z:Number = 0;
		
		private var _glow:GlowFilter;
		
		public function Circle()
		{
			super();
			
			this.graphics.beginFill(0xffffff , 0.5);
			this.graphics.drawCircle(0,0,10);
			this.graphics.endFill();
			
			this.rot_x = Math.random() * 360;
			this.rot_y = Math.random() * 360;
			this.rot_z = Math.random() * 360;
			this._rot_x = 1 + Math.random() * 2;
			this._rot_y = 1 + Math.random() * 2;
			this._rot_z = 1 + Math.random() * 2;
			this.pos_z = 1000//1 + Math.random() * 2;
			
			this._glow = new GlowFilter(0xffffff,1,30,30);
			
			this.blendMode = BlendMode.OVERLAY;
			
		}
		
		public function setPosZ(value:Number):void{
			this._glow.blurX = this._glow.blurY = value;
			this.filters = [this._glow];
		}
		
		public function add(speed:Number):void{
			
			this.rot_x += this._rot_x * speed;
			this.rot_y += this._rot_y * speed;
			this.rot_z += this._rot_z * speed;
			
			if(this.rot_x > 360) this.rot_x = this.rot_x - 360;
			if(this.rot_y > 360) this.rot_y = this.rot_y - 360;
			if(this.rot_z > 360) this.rot_z = this.rot_z - 360;
		}
		
	}
}