MSIT.NGif.GifEncoder.AnalyzePixels C# (CSharp) Метод

        private void AnalyzePixels()
        {
            int len = _pixels.Length;
            int nPix = len/3;
            _indexedPixels = new byte[nPix];
            NeuQuant nq = new NeuQuant(_pixels, len, _sample);
            // initialize quantizer
            _colorTab = nq.Process(); // create reduced palette
            // map image pixels to new palette
            int k = 0;
            for (int i = 0; i < nPix; i++) {
                int index = nq.Map(_pixels[k++] & 0xff, _pixels[k++] & 0xff, _pixels[k++] & 0xff);
                _usedEntry[index] = true;
                _indexedPixels[i] = (byte)index;
            }
            _pixels = null;
            _colorDepth = 8;
            _palSize = 7;
            // get closest match to transparent color if specified
            if (_transparent != Color.Empty)
                _transIndex = FindClosest(_transparent);
        }