/// <summary>
/// Calculate angle between two colors in the color wheel
/// </summary>
/// <param name="otherColor"></param>
/// <returns> IM wants it -100 .. 0 .. 100</returns>
public int Phi(Dye otherColor)
{
var hueDelta = otherColor.Hue - Hue;
var rotation = 100 + (int)(hueDelta / 180 * 100 + 0.5);
return /*rotation > 200 ? rotation - 200 : */ (rotation);
}
public int DeltaSb(Dye other)
{
var myS = Color.GetSaturation();
var otherS = other.Color.GetSaturation();
return((int)(100 * (1.0 + (otherS - myS) / myS) + 0.5));
// ImageMagick interprets 100 as unchanged (100%), 0 is grayscale, 200 is very colorful (cartoonish)
}
/// <summary>
/// reduced version: colors were too bright
/// </summary>
/// <param name="other"></param>
/// <returns></returns>
public int DeltaS(Dye other)
{
return(DeltaSa(other));
//return (DeltaSa(other) + DeltaSb(other)) / 2;
// ImageMagick interprets 100 as unchanged (100%), 0 is grayscale, 200 is very colorful (cartoonish)
}
public int DeltaB(Dye other)
{
return((int)(100 * (other.Color.GetBrightness() / Color.GetBrightness()) + .5));
// ImageMagick interprets 100 as unchanged (100%), 200 as twice as bright 50 as half as bright
}
public DyeDelta(Dye color1, Dye color2)
{
Phi = color1.Phi(color2);
DeltaB = color1.DeltaB(color2);
DeltaS = color1.DeltaS(color2);
}