public static unsafe void CalculateOctreeColorQuantization(byte *pBuffer, WriteableBitmap bitmap, params object[] otherParams)
{
int width = bitmap.PixelWidth;
int height = bitmap.PixelHeight;
int maxColors = (int)otherParams[0];
OctreeColorQuantizer octreeColorQuantizer = new OctreeColorQuantizer(maxColors);
for (int y = 0; y < height; y++) // Prepare quantization
{
for (int x = 0; x < width; x++)
{
octreeColorQuantizer.AddPixelColor(pBuffer[4 * x + (y * bitmap.BackBufferStride) + 0], pBuffer[4 * x + (y * bitmap.BackBufferStride) + 1], pBuffer[4 * x + (y * bitmap.BackBufferStride) + 2]);
}
}
octreeColorQuantizer.FinalizePalette();
for (int y = 0; y < height; y++) // Write new pixel values from generated palette
{
for (int x = 0; x < width; x++)
{
(int b, int g, int r)newColor = octreeColorQuantizer.GetNearestPaletteColor(pBuffer[4 * x + (y * bitmap.BackBufferStride) + 0], pBuffer[4 * x + (y * bitmap.BackBufferStride) + 1], pBuffer[4 * x + (y * bitmap.BackBufferStride) + 2]);
pBuffer[4 * x + (y * bitmap.BackBufferStride) + 0] = (byte)newColor.b;
pBuffer[4 * x + (y * bitmap.BackBufferStride) + 1] = (byte)newColor.g;
pBuffer[4 * x + (y * bitmap.BackBufferStride) + 2] = (byte)newColor.r;
}
}
}
public OctreeNode(OctreeNode parentNode, int treeLevel, OctreeColorQuantizer octreeColorQuantizer)
{
this.parentNode = parentNode;
this.treeLevel = treeLevel;
this.octreeColorQuantizer = octreeColorQuantizer;
children = new OctreeNode[8];
octreeColorQuantizer.leafCount++;
octreeColorQuantizer.treeLevels[treeLevel].Add(this); // Register this node in list of nodes for each level in octreeColorQuantizer
}
