public Bitmap flipY()
	{
		 int[] temp = new int[pixels.length];
	        
	        for(int i = 0; i < width; i++)
	        	for(int j = 0; j < height; j++)
	        		temp[i + j * width] = pixels[i + ( height - j - 1) * width];
	        
	        pixels = temp;
	        return this;
	}