/// <summary>
/// Applies Grayscale toning to the image.
/// </summary>
/// <typeparam name="TColor">The pixel format.</typeparam>
/// <typeparam name="TPacked">The packed format. <example>uint, long, float.</example></typeparam>
/// <param name="source">The image this method extends.</param>
/// <param name="rectangle">
/// The <see cref="Rectangle"/> structure that specifies the portion of the image object to alter.
/// </param>
/// <param name="mode">The formula to apply to perform the operation.</param>
/// <returns>The <see cref="Image{TColor, TPacked}"/>.</returns>
public static Image <TColor, TPacked> Grayscale <TColor, TPacked>(this Image <TColor, TPacked> source, Rectangle rectangle, GrayscaleMode mode = GrayscaleMode.Bt709)
where TColor : struct, IPackedPixel <TPacked>
where TPacked : struct, IEquatable <TPacked>
{
IImageFilteringProcessor <TColor, TPacked> processor = mode == GrayscaleMode.Bt709
? (IImageFilteringProcessor <TColor, TPacked>) new GrayscaleBt709Processor <TColor, TPacked>()
: new GrayscaleBt601Processor <TColor, TPacked>();
return(source.Process(rectangle, processor));
}
/// <summary>
/// Applies the processor to the image.
/// <remarks>This method does not resize the target image.</remarks>
/// </summary>
/// <typeparam name="TColor">The pixel format.</typeparam>
/// <typeparam name="TPacked">The packed format. <example>uint, long, float.</example></typeparam>
/// <param name="source">The image this method extends.</param>
/// <param name="sourceRectangle">
/// The <see cref="Rectangle"/> structure that specifies the portion of the image object to draw.
/// </param>
/// <param name="processor">The processors to apply to the image.</param>
/// <returns>The <see cref="Image{TColor, TPacked}"/>.</returns>
internal static Image <TColor, TPacked> Process <TColor, TPacked>(this Image <TColor, TPacked> source, Rectangle sourceRectangle, IImageFilteringProcessor <TColor, TPacked> processor)
where TColor : struct, IPackedPixel <TPacked>
where TPacked : struct
{
return(PerformAction(source, (sourceImage) => processor.Apply(sourceImage, sourceRectangle)));
}
/// <summary>
/// Applies the processor to the image.
/// <remarks>This method does not resize the target image.</remarks>
/// </summary>
/// <typeparam name="TColor">The pixel format.</typeparam>
/// <typeparam name="TPacked">The packed format. <example>uint, long, float.</example></typeparam>
/// <param name="source">The image this method extends.</param>
/// <param name="processor">The processor to apply to the image.</param>
/// <returns>The <see cref="Image{TColor, TPacked}"/>.</returns>
internal static Image <TColor, TPacked> Process <TColor, TPacked>(this Image <TColor, TPacked> source, IImageFilteringProcessor <TColor, TPacked> processor)
where TColor : struct, IPackedPixel <TPacked>
where TPacked : struct
{
return(Process(source, source.Bounds, processor));
}
