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resize bitmapdata

/ Published in: ActionScript 3
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This snippet uses the BitmapUtil to resize bitmap data, whilst maintaining transparency and aspect ratio, It assumes that you want a square output, so for those of you who want resizing rectangular images, just make the "ratio" part handle both X and Y.

cheers.

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  1. public static function resizeBitmapData(bmp: BitmapData, _tileSize:int):BitmapData
  2. 		{
  3. 			var image : mx.controls.Image = new mx.controls.Image();
  4. 			image.load (new Bitmap (bmp, "auto", true));
  5. 			var ratio:Number;
  6.  
  7. 			if(image.content.width>image.content.height)
  8. 			{
  9. 				ratio = _tileSize/image.content.width;
  10. 			}
  11. 			if(image.content.width<image.content.height)
  12. 			{
  13. 				ratio = _tileSize/image.content.height;
  14. 			}
  15. 			image.content.width *= ratio; 
  16. 			image.content.height *= ratio; 
  17. 			return BitmapUtil.getSnapshot(image);
  18. 		}

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