在外部操作MovieClip，利用BitmapData的draw()方法实现存储 分享

import flash.geom.*;
import flash.display.BitmapData;
import flash.filters.DropShadowFilter;
import mx.transitions.*;
import mx.transitions.easing.*;


var filter:DropShadowFilter = new DropShadowFilter(3, 45, 0x000000, .4, 4, 4, 1, 10, false, false, false);
var filterArray:Array = new Array();
filterArray.push(filter);
source.filters = filterArray;
left.onPress = function() {
var myTransitionManager:TransitionManager = new TransitionManager(source.pic);
myTransitionManager.startTransition({type:Rotate, direction:None, duration:0.4, easing:Regular.easeOut, degrees:90});
var myListener:Object = new Object();
myListener.allTransitionsOutDone = function(eventObj:Object) {
  source.pic._rotation+=90;;
};
myTransitionManager.addEventListener("allTransitionsOutDone", myListener);
};

var myMatrix:Matrix = new Matrix();
var translateMatrix:Matrix = new Matrix();
translateMatrix.translate(180, 160);
myMatrix.concat(translateMatrix);
var myColorTransform:ColorTransform = new ColorTransform();
var blendMode:String = "normal";
var myRectangle:Rectangle = new Rectangle(0, 0, 800, 800);
var smooth:Boolean = true;
var myBitmapData:BitmapData = new BitmapData(400, 300, true, 0xffffffff);
var mc:MovieClip = this.createEmptyMovieClip("mc", this.getNextHighestDepth());
mc._x = 0;
mc._y = 0;
mc.attachBitmap(myBitmapData, this.getNextHighestDepth());
save.onRelease = function() {
myBitmapData.draw(source, myMatrix, myColorTransform, blendMode, myRectangle, smooth);
};

这样就可以利用geom包和filters包里的类对图象进行编辑，操作，最后由BitmapData来实现快照，再利用GetPixs将元素输出，交给后台处理