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,?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,?_loc_1);?
  
  
????????????this.bitmapDataOld.merge(this.blurOld,?this.bitmapDataNew.rect,?_loc_1?*?256,?256);?
  
  
????????????this.blurNew.merge(this.bitmapDataNew,?this.bitmapDataOld.rect,?256);?
  
  
????????????this.bitmapDataTarget.draw(this.bitmapDataNew,?null,?new?ColorTransform(1,?Math.pow(_loc_1,?2)));?
  
  
????????????this.bitmapDataTarget.draw(this.bitmapDataOld,?Math.pow(1?-?_loc_1,?2)));?
  
  
????????????return;?
  
  
????????}//?end?function?
  
  
?
  
  
????}?
  
  
}?