UIImage ScaleToFit

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public static class UIImageUtils
	{
		/// 

		/// 
		/// 
		/// 
		/// A 
		/// 
		public static UIImage ScaleToFit(UIImage sourceImage, System.Drawing.SizeF targetSize)
		{
			UIImage newImage;
 
			SizeF imageSize = sourceImage.Size;
			float width = imageSize.Width;
			float height = imageSize.Height;
 
			float targetWidth = targetSize.Width;
			float targetHeight = targetSize.Height;
 
			float scaleFactor = 0f;
			float scaledWidth = targetWidth;
			float scaledHeight = targetHeight;
 
			PointF thumbnailPoint = new PointF(0, 0);
 
			if (imageSize != targetSize)
			{
				float widthFactor = targetWidth / width;
        			float heightFactor = targetHeight / height;
 
				if (widthFactor < heightFactor) 
                		scaleFactor = widthFactor;
        			else
                		scaleFactor = heightFactor;
 
				scaledWidth = width * scaleFactor;
        			scaledHeight = height * scaleFactor;
 
				// center the image
 
        			if (widthFactor < heightFactor) 
				{
                		thumbnailPoint.Y = (targetHeight - scaledHeight) * 0.5f; 
        			} 
				else if (widthFactor > heightFactor) 
				{
                		thumbnailPoint.X = (targetWidth - scaledWidth) * 0.5f;
        			}
			}
 
			RectangleF thumbnailRect = new RectangleF(new PointF(0, 0), new SizeF(scaledWidth, scaledHeight));
 
			UIGraphics.BeginImageContext(thumbnailRect.Size);
 
			sourceImage.Draw(thumbnailRect);
 
			newImage = UIGraphics.GetImageFromCurrentImageContext();
			UIGraphics.EndImageContext();
 
			return newImage;
		}
	}