画像を自由変形する

オブジェクトを曲げて表示する。
@author SIBA

by siba2260 07 Jan 2009

• Related works: 1

Tags

[graphics] drawTriangles
Embed

// write as3 code here..
package {
	import __AS3__.vec.Vector;
	
	import flash.display.Bitmap;
	import flash.display.Graphics;
	import flash.display.Sprite;

        import flash.display.BitmapData;  
        import flash.display.Loader;  
        import flash.display.LoaderInfo;  
        import flash.events.Event;  
        import flash.net.URLRequest;  
        import flash.system.LoaderContext;  
        import flash.system.Security;
	
	[SWF(width=800, height=600, backgroundColor=0xAADDFF)]

	/**
	 * オブジェクトを曲げて表示する。
	 * @author SIBA
	 */
	public class Main03 extends Sprite {
		
		private var image:Bitmap;
                private var loader:Loader;  
		
		private var bendImage:Sprite = new Sprite();
		
		public function Main03() {
                        Security.loadPolicyFile("http://farm2.static.flickr.com/crossdomain.xml");   
                        var context:LoaderContext = new LoaderContext(true);  
                        loader = new Loader();  
                        loader.contentLoaderInfo.addEventListener(Event.COMPLETE, onComplete);  
                        loader.load(new URLRequest("http://farm4.static.flickr.com/3180/3115974098_d1b27674ef.jpg?v=0"), context);  

			bendImage.x = 100;
			bendImage.y = 100;
			addChild(bendImage);
		}

                private function onComplete(event:Event):void {  
                    var loaderInfo:LoaderInfo = event.currentTarget as LoaderInfo;  
                    var loader:Loader = loaderInfo.loader;  
                    var bmp:BitmapData = new BitmapData(loader.width, loader.height, true, 0x00FFFFFF);  
                    bmp.draw(loader);
                    image = new Bitmap(bmp);
                    
                    createBendImage();
                }  
		
		private function createBendImage():void {
			var vertices:Vector.<Number> = new Vector.<Number>();
			var indices:Vector.<int> = new Vector.<int>();
			var uvtData:Vector.<Number> = new Vector.<Number>();
			
			for (var xx:int=0; xx<10; xx++) {
				for (var yy:int=0; yy<10; yy++) {
					vertices[vertices.length] = xx*50-(5-yy)*(5-yy)*5;
					vertices[vertices.length] = yy*50-(5-xx)*(5-xx)*5;
					uvtData[uvtData.length] = xx/10;
					uvtData[uvtData.length] = yy/10;
				}
			}
			
			for (var i:int=0; i<10-1; i++) {
				for (var j:int=0; j<10-1; j++) {
					indices.push(i*10+j, i*10+j+1, (i+1)*10+j);
					indices.push(i*10+j+1, (i+1)*10+1+j, (i+1)*10+j);
				}
			}
			
			const g:Graphics = bendImage.graphics;
			g.beginBitmapFill(image.bitmapData);
			g.drawTriangles(vertices, indices, uvtData);
			g.endFill();
		}
		
	}
}