private (IEnumerable <int> indices, IList <Color> palette) QuantizeImage(Bitmap image, Size paddedSize, IProgressContext progress = null)
{
var imageSize = paddedSize.IsEmpty ? image.Size : paddedSize;
// Decompose unswizzled image to colors
var colors = image.ToColors(paddedSize);
// Quantize unswizzled indices
var(indices, palette) = _quantizer.Process(colors, imageSize, progress);
// Swizzle indices to correct positions
var swizzledIndices = SwizzleIndices(indices.ToArray(), imageSize, _swizzle?.Invoke(imageSize));
return(swizzledIndices, palette);
}
private (IEnumerable <int> indices, IList <Color> palette) QuantizeImage(Bitmap image, Size paddedSize, IImageSwizzle swizzle, IProgressContext progress = null)
{
var finalSize = GetFinalSize(paddedSize, swizzle);
var colorShader = _shadeColorsFunc?.Invoke();
// Decompose unswizzled image to colors
var colors = image.ToColors(paddedSize);
// Quantize unswizzled indices
var(indices, palette) = _quantizer.Process(colors, finalSize, progress);
// Apply color shader
if (colorShader != null)
{
palette = palette.Select(colorShader.Write).ToArray();
}
// Delegate indices to correct positions
var swizzledIndices = SwizzleIndices(indices.ToArray(), finalSize, swizzle);
return(swizzledIndices, palette);
}