package 
{
	import flash.display.Bitmap;
	import flash.display.BitmapData;
	import flash.display.Sprite;
	import flash.display.StageScaleMode;
	import flash.geom.Point;
	import flash.geom.Rectangle;

	/**
	 * @author Dominic Beinenz
	 */

	[SWF(width='516', height='678', backgroundColor='#000000', frameRate='31')]

	public class BitmapSplitter extends Sprite
	{
		[Embed(source="../graphics/image.png")]
		private const image_png : Class;

		//_____________________________________________________________________________________________________________
		//																								C O N S T A N T
		//=============================================================================================================

		private const PARTS_NUMBER_HORIZONTAL : uint = 5;
		private const PARTS_NUMBER_VERTICAL : uint = 8;
		private const PARTS_PADDING : uint = 4;

		//_____________________________________________________________________________________________________________
		//																							  V A R I A B L E S
		//=============================================================================================================

		private var _sourceBitmap : Bitmap;

		//_____________________________________________________________________________________________________________
		//																							I N I T I A L I Z E
		//=============================================================================================================

		public function BitmapSplitter()
		{
			init();
			createPieces();
		}

		
		private function init() : void
		{
			stage.scaleMode = StageScaleMode.NO_SCALE;
			stage.showDefaultContextMenu = false;
			stage.stageFocusRect = false;
			
			_sourceBitmap = new image_png();
		}

		//_____________________________________________________________________________________________________________
		//																			  P R I V A T E - F U N C T I O N S
		//=============================================================================================================

		private function createPieces() : void
		{
			var piecesNum : uint = PARTS_NUMBER_HORIZONTAL * PARTS_NUMBER_VERTICAL;
			
			for (var i : int = 0;i < piecesNum; i++) {
				
				var row : uint = Math.floor(i / PARTS_NUMBER_HORIZONTAL);
				var column : uint = i % PARTS_NUMBER_HORIZONTAL;
				
				createPieceBitmap(row, column);
			}
		}

		private function createPieceBitmap(row : uint, column : uint) : void
		{
			var copyRectX : uint = getPositionPoint(row, column).x;
			var copyRectY : uint = getPositionPoint(row, column).y;
			var copyRectWidth : uint = getPositionPoint(row+1, column+1).x - copyRectX;
			var copyRectHeight : uint = getPositionPoint(row+1, column+1).y - copyRectY;
			
			var bitmap : Bitmap = new Bitmap(new BitmapData(copyRectWidth, copyRectHeight, false));
			var rectangle : Rectangle = new Rectangle(copyRectX, copyRectY, copyRectWidth, copyRectHeight);
			
			bitmap.bitmapData.copyPixels(_sourceBitmap.bitmapData, rectangle, new Point(0, 0));
			
			bitmap.x = copyRectX + column * PARTS_PADDING;
			bitmap.y = copyRectY + row * PARTS_PADDING;
			
			addChild(bitmap);
		}

		private function getPositionPoint(row : uint, column : uint) : Point
		{
			var pointX:uint = Math.round(column / PARTS_NUMBER_HORIZONTAL * _sourceBitmap.width);
			var pointY:uint = Math.round(row / PARTS_NUMBER_VERTICAL * _sourceBitmap.height);
			
			return new Point(pointX, pointY);
		}
		
		//_____________________________________________________________________________________________________________
		//																				P U B L I C - F U N C T I O N S
		//=============================================================================================================
		
		//_____________________________________________________________________________________________________________
		//		   	   	 																		      T W E E N I N G S
		//=============================================================================================================
		
		//_____________________________________________________________________________________________________________
		//																									E V E N T S
		//=============================================================================================================
		
		//_____________________________________________________________________________________________________________
		//																					G E T T E R  &  S E T T E R	
		//=============================================================================================================
	}
}