//随便加载一张图片,来用处为mask的目标
var image:Loader = new Loader();
image.cacheAsBitmap = true;//此步重要,把对象缓存为位图
addChild(image);
image.load(new URLRequest("/UploadTeach/200901/20090116173230248.jpg"));
//加载一张png图,作为mask区域;
var loader:Loader = new Loader();
loader.contentLoaderInfo.addEventListener(Event.COMPLETE,complete)
loader.filters = [new BlurFilter(0,0,0)]//此步重要,给对象加一个filter
addChild(loader)
loader.load(new URLRequest("/UploadTeach/200901/20090116173231266.png"));
//设置mask
image.mask = loader;
//以下代码非必要...................................................................
//把png复制一份显示出来
function complete(e:Event):void
{
var bit:BitmapData = Bitmap(loader.content).bitmapData.clone();
var bmp:Bitmap = new Bitmap(bit);
bmp.x = 256;
addChild(bmp);
}
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