private static void CreatePalette()
{
// Load the color image to a Texture2D
Texture2D colorTexture = LoadTexture();
if (colorTexture == null)
{
return;
}
// Create a list of all the unique colors in the color image
List <Color> paletteColors = new List <Color>();
bool proceed = false;
for (int x = 0; x < colorTexture.width; x++)
{
for (int y = 0; y < colorTexture.height; y++)
{
if (!paletteColors.Contains(colorTexture.GetPixel(x, y)))
{
paletteColors.Add(colorTexture.GetPixel(x, y));
if (paletteColors.Count > MaxColors && !proceed)
{
proceed = EditorUtility.DisplayDialog("Error", "Source image contains more than " + MaxColors + " colors. Continuing may lock up Unity for a long time", "Continue", "Stop");
if (!proceed)
{
return;
}
}
}
}
}
Debug.LogWarning("paletteColors " + paletteColors.Count + " W" + colorTexture.width + " H" + colorTexture.height);
List <HSBColor> hsbColors = GetSortedHSB(paletteColors);
Texture2D paletteTexture = new Texture2D(HueCount, RowCount, TextureFormat.RGB24, false);
paletteTexture.name = colorTexture.name + "_pal";
int colorIdx = 0;
int workingHue = 0;
int lastHue = 0;
for (int x = 0; x < HueCount; ++x)
{
lastHue = x;
List <HSBColor> matches = new List <HSBColor>();
for (int c = 0; c < paletteColors.Count; ++c)
{
HSBColor color = hsbColors[c];
workingHue = color.RoundedHue(HueCount);
if (Mathf.Abs(workingHue - lastHue) <= 0)
{
matches.Add(color);
}
}
if (matches.Count > 0)
{
float sum = 0f;
foreach (HSBColor c in matches)
{
sum += c.h;
}
float averageHue = sum / matches.Count;
HSBColor hsbcolor = new HSBColor(averageHue, 0, 0);
for (int ss = 0; ss < 4; ++ss)
{
for (int bb = 0; bb < 4; ++bb)
{
hsbcolor.s = ss / 3f;
hsbcolor.b = bb / 3f;
paletteTexture.SetPixel(x, ss * 4 + bb, HSBColor.ToColor(hsbcolor));
}
}
}
else
{
for (int y = 0; y < RowCount; ++y)
{
if (x == 0)
{
paletteTexture.SetPixel(x, y, Color.black);
}
else
{
paletteTexture.SetPixel(x, y, paletteTexture.GetPixel(x - 1, y));
}
}
}
}
// Save the palette image
SaveTexture(paletteTexture);
}
