Starling 이미지 로드 및 scale & rotation

package {
	import starling.events.Event;
	import starling.core.Starling;
	import starling.display.Sprite;
	import starling.display.Button;
	import starling.display.Image;
	import starling.textures.Texture;
	import starling.events.Touch;
	import starling.events.TouchEvent;
	import starling.events.TouchPhase;
	import starling.animation.Tween;
	import starling.animation.Transitions;
	import starling.utils.deg2rad;
	import starling.display.DisplayObject;
	import starling.text.TextField;
    import starling.utils.HAlign;
    import starling.utils.VAlign;
    
    import utils.TouchSheet;
	
	import flash.geom.Rectangle;
	import flash.geom.Point;
	import flash.display.Bitmap;
	import flash.net.URLRequest;
	import flash.display.Loader;
	import flash.events.Event;

	public class Demo extends Sprite {

		private var _loader:Loader;
		private var _image:Image;
		private var _posText:TextField;
		private var _sheet:TouchSheet;
		
		public function Demo() {
			_loader = new Loader();
			_loader.load(new URLRequest("https://t1.daumcdn.net/cfile/tistory/11252E424F0ADA1C06"));
			_loader.contentLoaderInfo.addEventListener(flash.events.Event.COMPLETE, onLoadedHandler);
		}

		
		private function onLoadedHandler(e:flash.events.Event):void{
			var bitmap:Bitmap = _loader.content as Bitmap;
			var texture:Texture = Texture.fromBitmap(bitmap);
			_image = new Image(texture);
			
			
			 var description:String = 
                "- touch and drag to move the images \n" +
                "- pinch with 2 fingers to scale and rotate \n" +
                "- double tap brings an image to the front \n" +
                "- use Ctrl/Cmd & Shift to simulate multi-touch";
            
            var infoText:TextField = new TextField(300, 75, description);
            infoText.x = 10;
			infoText.y = 35;
			infoText.fontSize = 12;
			infoText.color = 0x999999;
            infoText.vAlign = VAlign.TOP;
            infoText.hAlign = HAlign.LEFT;
            addChild(infoText);
			
			_sheet = new TouchSheet(_image);
			_sheet.scaleX = 0.2;
			_sheet.scaleY = 0.2;
			setAlignCenter(_sheet);
			_sheet.addEventListener(TouchEvent.TOUCH, onTouchHandler);
			addChild(_sheet);
			
			_posText = new TextField(400, 480, "");
			_posText.x = 10;
			_posText.y = 105;
			_posText.fontSize = 12;
			_posText.color = 0xBBBBBB;
            _posText.vAlign = VAlign.TOP;
            _posText.hAlign = HAlign.LEFT;
			_posText.touchable = false;
            addChild(_posText);
			
			stage.addEventListener(starling.events.Event.RESIZE, onResizeHandler);
			
		}
		
		private function onTouchHandler(e:TouchEvent):void{
			var touches:Vector.<Touch> = e.getTouches(_sheet);
			_posText.text = "_sheet.x : "+_sheet.x+"\n"+
							"_sheet.y : "+_sheet.y+"\n"+
							"_sheet.width  : "+_sheet.width+"\n"+
							"_sheet.height : "+_sheet.height;
			
			var len:int = touches.length;
			for(var i:int=0;i<len;i++){
				var touch:Touch = touches[i];
				var currentPoint:Point = touch.getLocation(_sheet);
				var previousPoint:Point = touch.getPreviousLocation(_sheet);
				_posText.text +="\n\n"+"touches["+i+"]========================\n"+
								"previousGlobalX : "+touch.previousGlobalX+"\n"+
								"previousGlobalY : "+touch.previousGlobalY+"\n"+
								"globalX : "+touch.globalX+"\n"+
								"globalY : "+touch.globalY+"\n"+
								"getLocation().x : "+currentPoint.x+"\n"+
								"getLocation().y : "+currentPoint.y+"\n"+
								"getPreviousLocation().x : "+previousPoint.x+"\n"+
								"getPreviousLocation().y : "+previousPoint.y;
			}
			
		}
		
		private function onResizeHandler(e:starling.events.Event):void{
			
		}

		private function setAlignCenter(inTarget:DisplayObject):void{
			inTarget.x = stage.stageWidth >> 1;
			inTarget.y = stage.stageHeight >> 1;
		}

		public override function dispose():void {
			super.dispose();
		}
	}
}