internal static ColorHSL FromSystemDrawingColor(System.Drawing.Color color)
{
ColorHSL rv = new ColorHSL
{
Hue = color.GetHue() / 360.0,
Saturation = color.GetSaturation(),
Lightness = color.GetBrightness()
};
return rv;
}
internal static ColorHSL FromSystemDrawingColor(System.Drawing.Color color)
{
ColorHSL rv = new ColorHSL
{
Hue = color.GetHue() / 360.0,
Saturation = color.GetSaturation(),
Lightness = color.GetBrightness()
};
return(rv);
}
private static ColorHSL MatchColor(IEnumerable <ColorHSL> allowable, ColorHSL source)
{
ColorHSL bestMatch = default(ColorHSL);
double bestMatchValue = double.MaxValue;
foreach (var color in allowable)
{
double[] diffs = new double[] { color.Hue - source.Hue, color.Lightness - source.Lightness, color.Saturation - source.Saturation };
double matchValue = diffs.Select(d => d * d).Sum();
if (matchValue < bestMatchValue)
{
bestMatchValue = matchValue;
bestMatch = color;
}
}
return(bestMatch);
}
private static ColorRGBA MatchColor(IEnumerable <Color> allowable, ColorRGBA source, ColorMatchingAlgorithm colorMatchingAlgorithm)
{
if (colorMatchingAlgorithm == ColorMatchingAlgorithm.HSV)
{
ColorHSL bestHSL = MatchColor(allowable.Select(c => ColorHSL.FromWindowsMediaColor(c)).ToArray(),
ColorHSL.FromRGBA(source)
);
return(bestHSL.ToColorRGBA());
}
else
{
ColorRGBA bestRGBA = MatchColor(allowable.Select(c => new ColorRGBA {
Alpha = c.A, Blue = c.B, Green = c.G, Red = c.R
}).ToArray(),
source);
return(bestRGBA);
}
}
