public int getClosestColorWithAlpha(Color c, Color[] pal)
{
int bestInd = 0;
float bestDif = ImageIndexer.colorDifference(pal[0], c);
for (int i = 0; i < pal.Length; i++)
{
float d = ImageIndexer.colorDifference(pal[i], c);
if (d < bestDif)
{
bestDif = d;
bestInd = i;
}
}
return(bestInd);
}
public float palDifUni(Color[] a, Color[] b)
{
bool aTransp = a[3] == Color.Transparent;
bool bTransp = b[3] == Color.Transparent;
if (aTransp != bTransp)
{
return(float.PositiveInfinity);
}
float dif = 0;
int len = aTransp ? 3 : 4;
bool[] sel = new bool[len];
for (int i = 0; i < len; i++)
{
Color c = a[i];
float diff = float.PositiveInfinity;
int i2 = -1;
for (int j = 0; j < len; j++)
{
if (sel[j])
{
continue;
}
float diff2 = ImageIndexer.colorDifference(c, b[j]);
if (diff2 < diff || i2 == -1)
{
i2 = j;
diff = diff2;
}
}
sel[i2] = true;
dif += diff;
}
return(dif);
}
