public static void Unpack8GrayPix(Pix2x8 pix, out byte p0, out byte p1, out byte p2, out byte p3, out byte p4, out byte p5, out byte p6, out byte p7)
{
p7 = BadgeImage.PixToSrgbGray((byte)(((pix.Value & 0x0100) >> 7) | ((pix.Value & 0x01) >> 0)));
p6 = BadgeImage.PixToSrgbGray((byte)(((pix.Value & 0x0200) >> 8) | ((pix.Value & 0x02) >> 1)));
p5 = BadgeImage.PixToSrgbGray((byte)(((pix.Value & 0x0400) >> 9) | ((pix.Value & 0x04) >> 2)));
p4 = BadgeImage.PixToSrgbGray((byte)(((pix.Value & 0x0800) >> 10) | ((pix.Value & 0x08) >> 3)));
p3 = BadgeImage.PixToSrgbGray((byte)(((pix.Value & 0x1000) >> 11) | ((pix.Value & 0x10) >> 4)));
p2 = BadgeImage.PixToSrgbGray((byte)(((pix.Value & 0x2000) >> 12) | ((pix.Value & 0x20) >> 5)));
p1 = BadgeImage.PixToSrgbGray((byte)(((pix.Value & 0x4000) >> 13) | ((pix.Value & 0x40) >> 6)));
p0 = BadgeImage.PixToSrgbGray((byte)(((pix.Value & 0x8000) >> 14) | ((pix.Value & 0x80) >> 7)));
}
public static void DitherImage(byte[] intermediateImage, int stride, int width, int height)
{
for (int y = 0, srcIy = 0; y < height; ++y, srcIy += stride)
{
for (int x = 0, srcI = srcIy; x < width; ++x, ++srcI)
{
int p = intermediateImage[srcI];
int withError = p; //p > (255 - 32) ? 255 : p + 32;
byte rounded = BadgeImage.PixToSrgbGray(BadgeImage.SrgbGrayToPix((byte)withError));
intermediateImage[srcI] = rounded;
int newError = withError - rounded;
int scaledError = (newError << 10) / 42;
for (int ei = 0; ei < s_StuckiPattern.Length; ++ei)
{
var e = s_StuckiPattern[ei];
int ex = x + e.Item1;
int ey = y + e.Item2;
if (ex >= 0 && ey >= 0 && ex < width && ey < height)
{
int weightedError = (scaledError * e.Item3) >> 10;
int diffusedIndex = ey * stride + ex;
int newValue = intermediateImage[diffusedIndex] + weightedError;
if (newValue < 0)
{
intermediateImage[diffusedIndex] = 0;
}
else if (newValue > 255)
{
intermediateImage[diffusedIndex] = 255;
}
else
{
intermediateImage[diffusedIndex] = (byte)newValue;
}
}
}
}
}
}
public static Color ColorFromPix(byte value)
{
byte g = BadgeImage.PixToSrgbGray(value);
return(Color.FromRgb(g, g, g));
}
