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ActionScript 3 SliceBitmap Class

/ Published in: ActionScript 3
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just slice bitmap class, takes DisplayObject, return array of BitmapData's

Can be used to do something like this: http://burnandbass.com/basstaslider

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  1. package  {
  2.  
  3. 	import flash.display.BitmapData;
  4. 	import flash.display.DisplayObject;
  5. 	import flash.geom.Matrix;
  6. 	import flash.geom.Rectangle;
  7.  
  8. 	public class SliceBitmap {
  9.  
  10. 		public function SliceBitmap() {
  11. 			/*
  12. 			Author: Chrysto Panayotov ( burnandbass[at]gmail[dot]com )
  13. 			AS3 util to slice horizontal bitmaps... The names of the static functions are self-explanary, returns array of bitmapData's
  14.  
  15. 			*/
  16. 		}
  17.  
  18. 		public static function sliceBitmap(_bitmapToSlice:DisplayObject, pieces:Number = 2, disposeOriginal:Boolean = false):Array{
  19. 			var slicesArray:Array = [];
  20. 			var tempWidth:Number = 0;
  21. 			for(var i:uint = 0; i< pieces; i++){
  22. 				var cropMatrix:Matrix = new Matrix();
  23. 				cropMatrix.translate(-tempWidth,0);
  24. 				var cropRectangle:Rectangle = new Rectangle(0,0,(_bitmapToSlice.width/pieces),_bitmapToSlice.height);
  25. 				var tempBitmap:BitmapData = new BitmapData(_bitmapToSlice.width/pieces,_bitmapToSlice.height);
  26. 				tempBitmap.draw(_bitmapToSlice,cropMatrix,null,null,cropRectangle,true);
  27. 				tempWidth += tempBitmap.width;
  28. 				slicesArray.push(tempBitmap);
  29. 			}
  30. 			return slicesArray;
  31. 			if(disposeOriginal){ _bitmapToSlice.dispose() }
  32. 		}
  33.  
  34. 		public static function sliceBitmapOffset(_bitmapToSlice:DisplayObject, pieces:Number = 2, disposeOriginal:Boolean = false,piecesOffset:Number = 2):Array{
  35. 			var slicesArray:Array = [];
  36. 			var tempWidth:Number = 0;
  37. 			for(var i:uint = 0; i< pieces; i++){
  38. 				var cropMatrix:Matrix = new Matrix();
  39. 				cropMatrix.translate(-tempWidth,0);
  40. 				var cropRectangle:Rectangle = new Rectangle(0,0,(_bitmapToSlice.width - (pieces-1)*piecesOffset)/pieces,_bitmapToSlice.height);
  41. 				var tempBitmap:BitmapData = new BitmapData( (_bitmapToSlice.width-(pieces-1)*piecesOffset)/pieces,_bitmapToSlice.height);
  42. 				tempBitmap.draw(_bitmapToSlice,cropMatrix,null,null,cropRectangle,true);
  43. 				tempWidth += tempBitmap.width + piecesOffset;
  44. 				slicesArray.push(tempBitmap);
  45. 			}
  46. 			return slicesArray;
  47. 			if(disposeOriginal){ _bitmapToSlice.dispose() }
  48. 		}
  49.  
  50. 	}//end	
  51. }

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