/// <summary>
/// Returns
/// <see cref="DeviceCmyk">DeviceCmyk</see>
/// color which is darker than given one
/// </summary>
/// <param name="cmykColor">the DeviceCmyk color to be made darker</param>
/// <returns>darker color</returns>
public static iText.Kernel.Colors.DeviceCmyk MakeDarker(iText.Kernel.Colors.DeviceCmyk cmykColor)
{
DeviceRgb rgbEquivalent = ConvertCmykToRgb(cmykColor);
DeviceRgb darkerRgb = DeviceRgb.MakeDarker(rgbEquivalent);
return(ConvertRgbToCmyk(darkerRgb));
}
public virtual void MakeDarkerTest()
{
DeviceRgb rgbColor = new DeviceRgb(50, 100, 150);
DeviceRgb darkerRgbColor = DeviceRgb.MakeDarker(rgbColor);
// check the resultant darkness of RGB items with using this multiplier
float multiplier = Math.Max(0f, (150f / 255 - 0.33f) / (150f / 255));
NUnit.Framework.Assert.AreEqual(multiplier * (50f / 255), darkerRgbColor.GetColorValue()[0], 0.0001);
NUnit.Framework.Assert.AreEqual(multiplier * (100f / 255), darkerRgbColor.GetColorValue()[1], 0.0001);
NUnit.Framework.Assert.AreEqual(multiplier * (150f / 255), darkerRgbColor.GetColorValue()[2], 0.0001);
}