public static CIMGrayColor ToGray(this CIMColor color)
{
if (color == null)
{
return(null);
}
switch (color)
{
case CIMRGBColor rgb:
return(rgb.ToGray());
case CIMCMYKColor cmyk:
return(cmyk.ToRGB().ToGray());
case CIMGrayColor gray:
return(gray);
case CIMHSVColor hsv:
return(hsv.ToRGB().ToGray());
case CIMHSLColor hsl:
return(hsl.ToRGB().ToGray());
default:
throw new NotSupportedException($"Cannot convert from {color.GetType().Name} to Gray");
}
}
public static string FormatColor([CanBeNull] CIMColor color)
{
if (color == null)
{
return(null);
}
var invariant = CultureInfo.InvariantCulture;
if (color is CIMRGBColor rgb)
{
return(string.Format(invariant, "RGB({0:F0},{1:F0},{2:F0})", rgb.R, rgb.G, rgb.B));
}
if (color is CIMCMYKColor cmyk)
{
return(string.Format(invariant, "CMYK({0:F0},{1:F0},{2:F0},{3:F0})", cmyk.C, cmyk.M, cmyk.Y, cmyk.K));
}
if (color is CIMGrayColor gray)
{
return(string.Format(invariant, "Gray({0:F0})", gray.Level));
}
if (color is CIMHSLColor hls)
{
return(string.Format(invariant, "HLS({0:F0},{1:F0},{2:F0})", hls.H, hls.L, hls.S));
}
if (color is CIMHSVColor hsv)
{
return(string.Format(invariant, "HSV({0:F0},{1:F0},{2:F0})", hsv.H, hsv.S, hsv.V));
}
throw new NotSupportedException(
$"Color of type {color.GetType().Name} is not supported");
}
