图片过渡效果一例 使用bitmapData操作

 源文件找不到了,反编了一份.

效果参见附件:

package com.dante
{
    import com.greensock.*;
    import flash.display.*;
    import flash.events.*;
    import flash.filters.*;
    import flash.geom.*;

    public class BitmapMotionEngine extends EventDispatcher
    {
        private var bitmapDataOld:BitmapData;
        private var bitmapDataNew:BitmapData;
        private var bitmapDataTarget:BitmapData;
        private var duration:Number = 1.5;
        private var tween:TweenLite;
        private var blurOld:BitmapData;
        private var blurNew:BitmapData;
        private var motionComplete:Boolean = true;

        public function BitmapMotionEngine()
        {
            return;
        }// end function

        public function startMotion(param1:BitmapData, param2:BitmapData, param3:BitmapData) : void
        {
            if (this.motionComplete)
            {
                this.bitmapDataNew = param2.clone();
                this.bitmapDataOld = param1.clone();
                this.bitmapDataTarget = param3;
                this.blurNew = this.bitmapDataNew.clone();
                this.blurNew.applyFilter(this.blurNew, this.blurNew.rect, new Point(), new BlurFilter(70, 70, 1));
                this.blurOld = this.bitmapDataOld.clone();
                this.blurOld.applyFilter(this.blurOld, this.blurOld.rect, new Point(), new BlurFilter(70, 70, 1));
                this.tween = TweenLite.to(this, this.duration, {onUpdate:this.update, onComplete:this.onMotionComplete});
            }
            return;
        }// end function

        private function onMotionComplete() : void
        {
            this.blurNew.dispose();
            this.blurOld.dispose();
            this.bitmapDataNew.dispose();
            this.bitmapDataOld.dispose();
            this.motionComplete = true;
            this.dispatchEvent(new Event(Event.COMPLETE));
            return;
        }// end function

        private function update() : void
        {
            var _loc_1:* = this.tween.currentTime / this.duration;
            var _loc_2:* = new ColorTransform(1, 1, 1, _loc_1);
            this.bitmapDataOld.merge(this.blurOld, this.bitmapDataNew.rect, new Point(), _loc_1 * 256, _loc_1 * 256, _loc_1 * 256, 256);
            this.blurNew.merge(this.bitmapDataNew, this.bitmapDataOld.rect, new Point(), _loc_1 * 256, _loc_1 * 256, _loc_1 * 256, 256);
            this.bitmapDataTarget.draw(this.bitmapDataNew, null, new ColorTransform(1, 1, 1, Math.pow(_loc_1, 2)));
            this.bitmapDataTarget.draw(this.bitmapDataOld, null, new ColorTransform(1, 1, 1, Math.pow(1 - _loc_1, 2)));
            return;
        }// end function

    }
}