Flash as3了解localToGlobal

我只是在理解Flash的localToGlobal功能方面有点麻烦.我有一个movieClip,它嵌套在一大堆其他动画片段中.当嵌套的剪辑被点击时,我想找到它的位置,并移动最上面的包含剪辑的量,使嵌套的剪辑位于舞台的中心(基本上我是一个树形图,和我想要的效果是TreeContainer以点击的“分支”为舞台的中心,

所以我有这个：

var treePoint = new Point (treeContainer.x,treeContainer.y); //since treePoint's parent is the stage,don't need global here.

var groupPoint = new Point (groupClip.x,groupClip.y);
var groupPointGlobal = groupClip.localToGlobal(groupPoint);
var stageCenter = new Point (int(stage.stageWidth/2),int(stage.stageHeight)/2);

var shiftAmount = ???

感谢您的任何帮助,您可以提供.

var globalPoint:Point = myClip.localToGlobal(new Point(0,0));

var localPoint:Point = myClip.parent.globalToLocal(new Point(320,240));
myClip.x = localPoint.x;
myClip.y = localPoint.y;