internal DitheringSessionRaster(IQuantizingSession quantizer, ErrorDiffusionDitherer ditherer, IBitmapData source)
{
this.quantizer = quantizer;
this.ditherer = ditherer;
ImageWidth = source.Width;
imageHeight = source.Height;
byBrightness = ditherer.byBrightness ?? quantizer.Palette?.IsGrayscale ?? false;
// Initializing a circular buffer for the diffused errors.
// This helps to minimize used memory because it needs only a few lines to be stored.
// Another solution could be to store resulting colors instead of just the errors but then the color
// entries would be clipped not just in the end but in every iteration, and small errors would be lost
// that could stack up otherwise.
// See also the ErrorDiffusionDitherer constructor for more comments on why using floats.
errorsBuffer = new CircularList <(float, float, float)[]>(ditherer.matrixHeight);
internal DitheringSessionSerpentine(IQuantizingSession quantizer, ErrorDiffusionDitherer ditherer, IReadableBitmapData source)
: base(quantizer, ditherer, source)
{
this.source = source;
preprocessedResults = new Color32[ImageWidth];
}