Get BitmapData inside Sprite

Question

Hi,Following Problem:I want to get the BitmapData from a Child Bitmap of a Sprite. I can get the Bitmap but not the BitmapData. I dont want to save it in an extra variable.(BitmapData(flySprite.getChildAt(0).bitmapData)           // Doesnt Work(Bitmap(flySprite.getChildAt(0))                                    // does Work but not with .bitmapDataHow can I get the bitmapData without saving in a new Bitmap (that works...)? is there a way to call the BitmapData with "flySprite.flyBitmap.bitmapData"? How do i have to add the Bitmap, that this works?my favorite solution would be not to use a Sprite at all, but i need the registrationpoint in center and after drawing the bitmap, the registration is in the top-left corner. I tried to chage it withmatrix.identity();matrix.translate(-(flyBmp.width / 2), -(flyBmp.height / 2 ));flyBmp.transform.matrix = matrix;etc. pp.It changed nothing... does the registration change back in every frame or something?thanks, Megaloadon

kglad · Answer

what makes you think that child is a bitmap?

if it starts as a bitmap and is added to the stage using the ide, it's probably a shape. use trace(flySprite.getChildAt(0)) to confirm.

if you want it to remain a bitmap, assign it a bitmapdata class and then use actionscript to add it to the display, or add it to the display in the ide.

and registration points only make sense when discussing in the context of a parent. ie, the reg point is relative to the parent (and/or some other antecedent).

if you want to change a displayobjectcontainer's reg point, you can use:

function changeRegPt(dobj:DisplayObjectContainer,x:Number,y:Number){

var r:Rectangle = dobj.getBounds(dobj);

for(var i:uint=0;i<dobj.numChildren;i++){

dobj.getChildAt(i).x -= r.x+x;

dobj.getChildAt(i).y -= r.y+y;

}

dobj.x += r.x+x;

dobj.y += r.y+y;

}

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