/// <summary>
/// Changes the image according to a gradient between 2 colors
/// Black pixels will be replaced with dark color
/// White pixels will be replaced with bright color
/// Other pixels are replaced by their position on the gradient
/// </summary>
/// <param name="image">Image to modify</param>
/// <param name="dark">Darkest color of the gradient</param>
/// <param name="bright">Brightest color of the gradient</param>
public static void GradientMap(this Bitmap image, Color dark, Color bright)
{
Func <Color, Color> gradientMap = (color => ColorExtension.GradientMap(color, dark, bright));
ForEachPixel(image, gradientMap);
}
/// <summary>
/// Changes brightness of the image
/// </summary>
/// <param name="image">Image to modify</param>
/// <param name="delta">Between -255 and 255, if less, black, if more, white</param>
public static void Brightness(this Bitmap image, int delta)
{
Func <Color, Color> brightness = (color => ColorExtension.Brightness(color, delta));
ForEachPixel(image, brightness);
}