[ActionScript 3.0] AS3 绘制立方体

package
{
    import flash.display.Sprite;
    import flash.events.Event;
    import flash.geom.Vector3D;
    import flash.text.TextField;
    import flash.text.TextFormat;
    
    /**
     * @author Frost.Yen
     * @E-mail 871979853@qq.com
     * @create 2015-9-2 下午3:17:09
     *
     */
    [SWF(width="800",height="600")]
    public class DrawCube extends Sprite
    {
        private var _faceArr:Array = [];
        private var _sideLen:Number = 100;//正方形边长
        private var _container:Sprite;
        private var _text:String = "AS世界你好";
        private var _tf:TextFormat = new TextFormat("微软雅黑",60,0xff0000);
        public function DrawCube()
        {
            initViews();
            initEventListeners();
        }
        private function initViews():void
        {
            _container = new Sprite();
            _container.x = 300;
            _container.y = 300;
            this.addChild(_container);
            creatCube();
        }
        private function initEventListeners():void
        {
            this.addEventListener(Event.ENTER_FRAME,onMove);
        }
        private function onMove(e:Event):void
        {
            for(var i:int = 0;i<6;i++){
                _faceArr[i].transform.matrix3D.appendRotation((mouseX-_container.x)/50,Vector3D.Y_AXIS);
                _faceArr[i].transform.matrix3D.appendRotation((_container.y-mouseY)/50,Vector3D.X_AXIS);
            }
            _faceArr.sortOn("z",18);
            for(i=0;i<_faceArr.length;i++){
                _container.setChildIndex(_faceArr[i],i);
            }
        }
        private function creatCube():void
        {
            for(var i:int=0;i<6;i++){
                var rect:Sprite = drawRect(_sideLen,_sideLen,Math.random()*0xffffff);
                var txt:TextField = new TextField();
                _container.addChild(rect);
                rect.addChild(txt);
                txt.autoSize = "center";
                txt.selectable = false;
                txt.defaultTextFormat = _tf;
                txt.text = _text.substr(i,1);
                txt.x = -txt.width*0.5;
                txt.y = -txt.height*0.5;
                rect.z = -_sideLen/2;
                _faceArr[i] = rect;
                i<4?rect.transform.matrix3D.appendRotation(90*i,Vector3D.Y_AXIS):0;
            }
            _faceArr[4].transform.matrix3D.appendRotation(-90,Vector3D.X_AXIS);
            _faceArr[5].transform.matrix3D.appendRotation(90,Vector3D.X_AXIS);
        }
        private function drawRect(Number,height:Number,color:uint):Sprite
        {
            var rect:Sprite = new Sprite();
            rect.graphics.beginFill(color,0.9);
            rect.graphics.drawRect(-width*0.5,-height*0.5,width,height);
            rect.graphics.endFill();
            return rect;
        }
    }
}