Digitalchemy

			// Crop a UIImage to the specified cropRect
		    public UIImage CropImage(UIImage image, RectangleF cropRect)
            {
				UIGraphics.BeginImageContextWithOptions(cropRect.Size, false, 0);
				var context = UIGraphics.GetCurrentContext();
				
				context.TranslateCTM(0.0f, image.Size.Height);
				context.ScaleCTM(1.0f, -1.0f);
				context.DrawImage(new RectangleF(0, 0, image.Size.Width, image.Size.Height), image.CGImage);
				context.ClipToRect(cropRect);