getQuantizedColor method
Find the color closest to c
in the colorMap.
Implementation
@override
int getQuantizedColor(int c) {
final r = getRed(c);
final g = getGreen(c);
final b = getBlue(c);
final a = getAlpha(c);
final i = _inxSearch(b, g, r) * 3;
return getColor(colorMap[i], colorMap[i + 1], colorMap[i + 2], a);
}