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actionscript-3flashbitmapdata

Converting MovieClip to Bitmap with Dispose()

I am working on a mobile game using Flash CS6 with AIR. also design and coding on same platform (not using starling etc.).

I am converting movieClips (static, not animated) to bitmap dynamically and its working fine. But i realize with this process bitmapData caching on memory and with big shapes it takes a lot of memory. Then i decide to after added to stage clear to bitmapData by dispose(). But its removes from stage and anywhere its shown.

My code;

var target:MovieClip = new Ex_mc2();
target.x=100;
target.y=300;
addChild(target);

var bounds:Rectangle = target.getBounds(this);
var bmpData:BitmapData = new BitmapData(Math.floor(bounds.width), Math.floor(bounds.height), true, 0);
var bmpMatrix:Matrix = target.transform.matrix;
bmpMatrix.translate(-bounds.x, -bounds.y); // Draw bitmap
bmpData.draw(target, bmpMatrix);

var bmp:Bitmap = new Bitmap(bmpData);
bmp.x=100;
bmp.y=300;
addChild(bmp);

removeChild(target);
//bmpData.dispose(); I want to use this and i dont want my bmp disappear

Searching to solution for one week but i cant figure it out. So my question is;

Can i converting movieClips to bitmap with freeing to memory? Like adding stage a static png file?

Solution

  • BitmapData -- is actually what's being shown on the screen. The format is almost identical to BMP, but the order of bytes is reversed. Bitmap is only a display container, serving to output image content to the screen and providing common DisplayObject APIs.

    So, if you use BitmapData.dispose(), you are actually freeing the memory occupied by image and obviously after that there is nothing to be shown by Bitmap container.