本作品：

var a:BitmapData = new BitmapData(640,480);
var b:Bitmap = new Bitmap(a);
a.draw(movieClip);

这不工作：

movieClip.mask = movieClipMask;
var a:BitmapData = new BitmapData(640,480);
var b:Bitmap = new Bitmap(a);
a.draw(movieClip);

我

如何可以得出一个影片剪辑（使用口罩）仅可见光部分进入我的位图？

How can I draw just the visible part of a MovieClip (that uses a mask) into my Bitmap?

推荐答案

创建一个新的Sprite，并添加两个影片剪辑和面具吧。然后绘制父雪碧。

Create a new Sprite and add both the MovieClip and its mask to it. Then draw the parent Sprite.

var container:Sprite = new Sprite();
container.addChild (movieClip);
container.addChild (movieClipMask);
movieClip.mask = movieClipMask;

var a:BitmapData = new BitmapData(640,480);
var b:Bitmap = new Bitmap(a);
a.draw(container);