static Color32 GetNearestCol(int r, int g, float b)
{
float cr = ((float)r) * (1f / ((float)RGDetail));
float cg = ((float)g) * (1f / ((float)RGDetail));
float cb = b; // ((float)b) * (1f / ((float)gridWidth));
Color c = new Color(cr, 1f - cg, cb, 1f);
if (generatePureLUT)
{
return(c);
}
float h = 0f;
float s = 0f;
float v = 0f;
Color.RGBToHSV(c, out h, out s, out v);
int bestCol = 0;
float closestValue = 100f;
float valueDistance = 0f;
for (int i = 0; i < paletteCols.Count; i++)
{
valueDistance = Mathf.Sqrt((HueDistance(paletteHues[i], h) * HueDistance(paletteHues[i], h)) * HInfluence
+ (Mathf.Abs(paletteSaturations[i] - s) * Mathf.Abs(paletteSaturations[i] - s)) * SInfluence
+ (Mathf.Abs(paletteValues[i] - v) * Mathf.Abs(paletteValues[i] - v)) * VInfluence);
//add RGB distances
valueDistance += Mathf.Sqrt(Mathf.Abs(paletteCols[i].r - c.r) * Mathf.Abs(paletteCols[i].r - c.r)
+ Mathf.Abs(paletteCols[i].g - c.g) * Mathf.Abs(paletteCols[i].g - c.g)
+ Mathf.Abs(paletteCols[i].b - c.b) * Mathf.Abs(paletteCols[i].b - c.b)) * RGBInfluence;
if (CIELabInfluence > 0f)
{
valueDistance += ColorMath.DeltaECIE94(paletteColsCIELab[i], ColorMath.RGBtoCIELab(new Color(cr, 1f - cg, cb))) * CIELabInfluence;
}
//compare
if (valueDistance < closestValue)
{
closestValue = valueDistance;
bestCol = i;
}
}
return(paletteCols32[bestCol]);
}
static void AddColorToPalette(Color32 c)
{
for (int i = 0; i < paletteCols32.Count; i++)
{
if (paletteCols32[i].r == c.r && paletteCols32[i].g == c.g && paletteCols32[i].b == c.b)
{
return;
}
}
paletteCols32.Add(c);
paletteCols.Add(c);
float h = 0f;
float s = 0f;
float v = 0f;
Color.RGBToHSV(paletteCols[paletteCols.Count - 1], out h, out s, out v);
paletteHues.Add(h);
paletteSaturations.Add(s);
paletteValues.Add(v);
paletteColsCIELab.Add(ColorMath.RGBtoCIELab(paletteCols[paletteCols.Count - 1]));
}