`

创建一个带有模糊边缘的遮罩但是没起效果的原因 - 如果要加载模糊边缘的遮罩来遮罩显示对象, 需要将被遮罩的显示对象的cacheAsBitmap 打开

阅读更多
创建一个带有模糊边缘的遮罩但是没起效果的原因 - 如果要加载模糊边缘的遮罩来遮罩显示对象, 需要将被遮罩的显示对象的cacheAsBitmap 打开


package 

{

        import flash.display.Bitmap;

        import flash.display.Sprite;

        import flash.events.Event;

        import flash.display.Loader;

        import flash.net.URLRequest;

        import flash.filters.BlurFilter;

        import flash.filters.BitmapFilterQuality;



        public class SampleSimpleMask extends Sprite

        {

                private var _bitmap:Bitmap;

                private var _circleMask:Sprite;

                public function SampleSimpleMask()

                {

                        initMask();

                        startLoadImg();

                }

                private function loaded(evt:Event):void

                {

                        _bitmap = evt.target.content as Bitmap;

                        addChild(_bitmap);

                        _bitmap.cacheAsBitmap = true;//加上这句,将缓存显示对象的内部位图表示形式

                        _bitmap.mask = _circleMask;

                        

                }



                private function initMask():void

                {

                        _circleMask = new Sprite();

                        _circleMask.graphics.beginFill(0xFF00FF);

                        _circleMask.graphics.drawCircle(60,60,200);

                        _circleMask.graphics.endFill();

                        _circleMask.filters = [new BlurFilter(50,50,BitmapFilterQuality.HIGH)];

                        _circleMask.cacheAsBitmap = true;

                        this.addChild(_circleMask);

                        _circleMask.startDrag(true);

                }

                private function startLoadImg():void

                {

                        var loader:Loader = new Loader();

                        var request:URLRequest = new URLRequest("a.jpg");

                        loader.contentLoaderInfo.addEventListener(Event.COMPLETE,loaded);

                        loader.load(request);

                }

        }

}


分享到:
评论

相关推荐

Global site tag (gtag.js) - Google Analytics