Quadwarp

http://www.youtube.com/watch?v=nWTMrgV1CZk
クリックでマウスモード

forked:5
favorite:8
lines:82
license : MIT License
modified : 2009-01-08 17:45:15

// write as3 code here..
// http://www.youtube.com/watch?v=nWTMrgV1CZk
// クリックでマウスモード
package {
	import flash.display.Bitmap;
	import flash.display.BitmapData;
	import flash.display.Loader;
	import flash.display.LoaderInfo;
	import flash.display.Sprite;
	import flash.events.Event;
	import flash.events.MouseEvent;
	import flash.geom.Matrix;
	import flash.geom.Point;
	import flash.net.URLRequest;
	import flash.system.LoaderContext;
	import flash.utils.getTimer;
	
	[SWF(width=465, height=465, backgroundColor=0x0, frameRate=60)]
	
	public class Hoge extends Sprite {
		
		private var _topLeft:Bitmap;
		private var _topRight:Bitmap;
		private var _bottomLeft:Bitmap;
		private var _bottomRight:Bitmap;
		
		private var _center:Point;
		private var _isAuto:Boolean = true;
		
		public function Hoge() {
			var loader:Loader = new Loader();
			loader.contentLoaderInfo.addEventListener(Event.COMPLETE, this._onImageLoaded);
			loader.load(new URLRequest('http://saqoosha.net/images/booo.jpg'), new LoaderContext(true));
		}
		
		private function _onImageLoaded(e:Event):void {
			var loader:Loader = Loader(LoaderInfo(e.target).loader);
			var original:BitmapData = Bitmap(loader.content).bitmapData;
			
			var w:int = original.width >> 1;
			var h:int = original.height >> 1;
			var img:BitmapData = new BitmapData(w, h, false, 0x0);
			img.draw(original);
			this._topLeft = this.addChild(new Bitmap(img)) as Bitmap;
			this._topLeft.smoothing = true;
			
			img = img.clone();
			img.draw(original, new Matrix(1, 0, 0, 1, -w, 0));
			this._topRight = this.addChild(new Bitmap(img)) as Bitmap;
			this._topRight.smoothing = true;
			
			img = img.clone();
			img.draw(original, new Matrix(1, 0, 0, 1, 0, -h));
			this._bottomLeft = this.addChild(new Bitmap(img)) as Bitmap;
			this._bottomLeft.smoothing = true;
			
			img = img.clone();
			img.draw(original, new Matrix(1, 0, 0, 1, -w, -h));
			this._bottomRight = this.addChild(new Bitmap(img)) as Bitmap;
			this._bottomRight.smoothing = true;
			
			this._center = new Point(this.stage.stageWidth / 2, this.stage.stageHeight / 2);
			
			this.addEventListener(Event.ENTER_FRAME, this._update);
			this.stage.addEventListener(MouseEvent.CLICK, this._onClick);
		}
		
		private function _update(e:Event = null):void {
			var cx:Number;
			var cy:Number;
			if (this._isAuto) {
				var t:Number = getTimer() / 1000;
				cx = Math.cos(t) * 120 + this.stage.stageWidth / 2;
				cy = Math.sin(t) * 120 + this.stage.stageHeight / 2;
			} else {
				cx = Math.max(0, Math.min(this.stage.stageWidth, this.stage.mouseX));
				cy = Math.max(0, Math.min(this.stage.stageHeight, this.stage.mouseY));
			}
			this._center.x += (cx - this._center.x) / 10;
			this._center.y += (cy - this._center.y) / 10;
			
			this._topLeft.width = this._center.x;
			this._topLeft.height = this._center.y;
			
			this._topRight.x = this._center.x;
			this._topRight.width = this.stage.stageWidth - this._center.x;
			this._topRight.height = this._center.y;
			
			this._bottomLeft.y = this._center.y;
			this._bottomLeft.width = this._center.x;
			this._bottomLeft.height = this.stage.stageHeight - this._center.y;
			
			this._bottomRight.x = this._center.x;
			this._bottomRight.y = this._center.y;
			this._bottomRight.width = this.stage.stageWidth - this._center.x;
			this._bottomRight.height = this.stage.stageHeight - this._center.y;
		}
		
		private function _onClick(e:MouseEvent):void {
			this._isAuto = !this._isAuto;
		}
	}
}

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