private (List <Palette> colors, int numVectors) GetPalette(int paletteSize, Color?exclude, int error = 0, bool ignoreGrey = false)
{
foreach (var cp in image.GetColors())
{
var isExcluded = exclude != null &&
exclude.Value.R - error < cp.color.R && cp.color.R < (exclude.Value.R + error) &&
exclude.Value.G - error < cp.color.G && cp.color.G < (exclude.Value.G + error) &&
exclude.Value.B - error < cp.color.B && cp.color.B < (exclude.Value.B + error);
if (!isExcluded)
{
var excludeGrey = ignoreGrey &&
Math.Abs(cp.color.R - cp.color.G) < error &&
Math.Abs(cp.color.R - cp.color.B) < error &&
Math.Abs(cp.color.G - cp.color.B) < error;
if (!excludeGrey)
{
octree.InsertVector(new byte[] { cp.color.R, cp.color.G, cp.color.B }, cp.position);
}
}
}
var numVectors = octree.NumVectors;
return(octree.ReduceToSize(paletteSize), numVectors);
}