private Color[] GetColorfulColors(Color color, int count)
{
Color[] colors = new Color[count];
float h = HSV.RGBtoHSV(color).H;
float span = 100 / count;
for (int i = 0; i < count; i++)
{
float v = 100 - i * span;
float s = i % 4 * 20 + 20;
colors[i] = HSV.HSVtoRGB(255, h, s, v);
}
return(colors);
}
/// <summary>
/// Palette color from colors
/// </summary>
/// <param name="colors"> Color array. </param>
/// <returns> Color </returns>
public static Color GetPaletteFromColors(Color[] colors)
{
try
{
//saturation
double sumS = 0;
//value
double sumV = 0;
double sumHue = 0;
double maxV = 0;
double maxS = 0;
double maxH = 0;
double count = 0;
foreach (var color in colors)
{
HSV hsv = HSV.RGBtoHSV(color);
if (hsv.H == 0)continue;
maxS = hsv.S > maxS ? hsv.S : maxS;
maxV = hsv.V > maxV ? hsv.V : maxV;
maxH = hsv.H > maxH ? hsv.H : maxH;
sumHue += hsv.H;
sumS += hsv.S;
sumV += hsv.V;
count++;
}
double avgH = sumHue / count;
double avgV = sumV / count;
double avgS = sumS / count;
double maxAvgV = maxV / 2;
double maxAvgS = maxS / 2;
double maxAvgH = maxH / 2;
double h = Math.Max(maxAvgV, avgV);
double s = Math.Min(maxAvgS, avgS);
double hue = Math.Min(maxAvgH, avgH);
double R = 0;
double G = 0;
double B = 0;
count = 0;
foreach (var color in colors)
{
HSV hsv = HSV.RGBtoHSV(color);
if (hsv.H == 0) continue;
if (hsv.H >= hue + 10 && hsv.V >= h && hsv.S >= s)
{
R += color.R;
G += color.G;
B += color.B;
count++;
}
}
double r = R / count;
double g = G / count;
double b = B / count;
// if (r + g + b > 96 && r + g + b < 672)
return Color.FromArgb(255, (byte)r, (byte)g, (byte)b);
}
catch (Exception)
{
return FallBackColor;
}
}