void IErrorDiffusion.Diffuse(ArgbColor[] data, ArgbColor original, ArgbColor transformed, int x, int y, int width, int height)
{
byte gray;
gray = (byte)(0.299 * original.R + 0.587 * original.G + 0.114 * original.B);
if (gray > _random.Next(0, 255))
{
data[y * width + x] = _white;
}
else
{
data[y * width + x] = _black;
}
}
private int FindNearestColor(ArgbColor current)
{
/*
* sdist = 255L * 255L * 255L + 1L; // Compute the color
* for (c=0; c<COLORS; ++c) { // in colormap[] that
* // is nearest to the
* #define D(z) (line[z][x]-colormap[c][z]) // corrected color.
*
* dist = D(0)*D(0) + D(1)*D(1) + D(2)*D(2);
* if (dist < sdist) {
* nc = c;
* sdist = dist;
* }
* }
*/
int shortestDistance;
int index;
index = 0;
shortestDistance = int.MaxValue;
for (int i = 0; i < _map.Length; i++)
{
ArgbColor match;
int distance;
match = _map[i];
distance = this.GetDistance(current, match);
if (distance < shortestDistance)
{
index = i;
shortestDistance = distance;
}
}
return(index);
}
internal static ArgbColor[] GetPixelsFrom32BitArgbImage(this Bitmap bitmap)
{
int width;
int height;
BitmapData bitmapData;
ArgbColor[] results;
// NOTE: As the name should give a hint, it only supports 32bit ARGB images.
// Don't rely on this for production, it needs expanding to support multiple other types
width = bitmap.Width;
height = bitmap.Height;
results = new ArgbColor[width * height];
bitmapData = bitmap.LockBits(new Rectangle(0, 0, width, height), ImageLockMode.WriteOnly, PixelFormat.Format32bppArgb);
unsafe
{
ArgbColor *pixel;
pixel = (ArgbColor *)bitmapData.Scan0;
for (int row = 0; row < height; row++)
{
for (int col = 0; col < width; col++)
{
results[row * width + col] = *pixel;
pixel++;
}
}
}
bitmap.UnlockBits(bitmapData);
return(results);
}
void IErrorDiffusion.Diffuse(ArgbColor[] data, ArgbColor original, ArgbColor transformed, int x, int y, int width, int height)
{
int row;
int col;
byte threshold;
col = x % _matrixWidth;
row = y % _matrixHeight;
threshold = _matrix[col, row];
if (threshold > 0)
{
byte r;
byte g;
byte b;
r = Clamp(transformed.R + threshold);
g = Clamp(transformed.G + threshold);
b = Clamp(transformed.B + threshold);
data[y * width + x] = ArgbColor.FromArgb(original.A, r, g, b);
}
}
void IErrorDiffusion.Diffuse(ArgbColor[] data, ArgbColor original, ArgbColor transformed, int x, int y, int width, int height)
{
int redError;
int blueError;
int greenError;
redError = original.R - transformed.R;
blueError = original.G - transformed.G;
greenError = original.B - transformed.B;
for (int row = 0; row < _matrixHeight; row++)
{
int offsetY;
offsetY = y + row;
for (int col = 0; col < _matrixWidth; col++)
{
int coefficient;
int offsetX;
coefficient = _matrix[row, col];
offsetX = x + (col - _startingOffset);
if (coefficient != 0 && offsetX > 0 && offsetX < width && offsetY > 0 && offsetY < height)
{
ArgbColor offsetPixel;
int offsetIndex;
int newR;
int newG;
int newB;
byte r;
byte g;
byte b;
offsetIndex = offsetY * width + offsetX;
offsetPixel = data[offsetIndex];
// if the UseShifting property is set, then bit shift the values by the specified
// divisor as this is faster than integer division. Otherwise, use integer division
if (_useShifting)
{
newR = (redError * coefficient) >> _divisor;
newG = (greenError * coefficient) >> _divisor;
newB = (blueError * coefficient) >> _divisor;
}
else
{
newR = redError * coefficient / _divisor;
newG = greenError * coefficient / _divisor;
newB = blueError * coefficient / _divisor;
}
r = (offsetPixel.R + newR).ToByte();
g = (offsetPixel.G + newG).ToByte();
b = (offsetPixel.B + newB).ToByte();
data[offsetIndex] = ArgbColor.FromArgb(offsetPixel.A, r, g, b);
}
}
}
}
public MinecraftMapColorPalettePixelTransform()
: base(new[]
{
ArgbColor.FromArgb(75, 75, 75),
ArgbColor.FromArgb(64, 64, 64),
ArgbColor.FromArgb(52, 52, 52),
ArgbColor.FromArgb(39, 39, 39),
ArgbColor.FromArgb(37, 22, 16),
ArgbColor.FromArgb(31, 18, 13),
ArgbColor.FromArgb(26, 15, 11),
ArgbColor.FromArgb(19, 11, 8),
ArgbColor.FromArgb(25, 25, 25),
ArgbColor.FromArgb(21, 21, 21),
ArgbColor.FromArgb(17, 17, 17),
ArgbColor.FromArgb(13, 13, 13),
ArgbColor.FromArgb(86, 91, 91),
ArgbColor.FromArgb(74, 78, 78),
ArgbColor.FromArgb(60, 63, 63),
ArgbColor.FromArgb(45, 47, 47),
ArgbColor.FromArgb(111, 111, 111),
ArgbColor.FromArgb(95, 95, 95),
ArgbColor.FromArgb(78, 78, 78),
ArgbColor.FromArgb(58, 58, 58),
ArgbColor.FromArgb(151, 151, 151),
ArgbColor.FromArgb(130, 130, 130),
ArgbColor.FromArgb(107, 107, 107),
ArgbColor.FromArgb(80, 80, 80),
ArgbColor.FromArgb(165, 165, 165),
ArgbColor.FromArgb(142, 142, 142),
ArgbColor.FromArgb(116, 116, 116),
ArgbColor.FromArgb(87, 87, 87),
ArgbColor.FromArgb(197, 197, 197),
ArgbColor.FromArgb(169, 169, 169),
ArgbColor.FromArgb(138, 138, 138),
ArgbColor.FromArgb(104, 104, 104),
ArgbColor.FromArgb(252, 249, 242),
ArgbColor.FromArgb(217, 214, 208),
ArgbColor.FromArgb(178, 175, 170),
ArgbColor.FromArgb(133, 131, 127),
ArgbColor.FromArgb(252, 252, 252),
ArgbColor.FromArgb(217, 217, 217),
ArgbColor.FromArgb(178, 178, 178),
ArgbColor.FromArgb(133, 133, 133),
ArgbColor.FromArgb(162, 166, 182),
ArgbColor.FromArgb(139, 142, 156),
ArgbColor.FromArgb(114, 117, 127),
ArgbColor.FromArgb(85, 87, 96),
ArgbColor.FromArgb(252, 0, 0),
ArgbColor.FromArgb(217, 0, 0),
ArgbColor.FromArgb(178, 0, 0),
ArgbColor.FromArgb(133, 0, 0),
ArgbColor.FromArgb(101, 125, 50),
ArgbColor.FromArgb(87, 108, 43),
ArgbColor.FromArgb(71, 88, 35),
ArgbColor.FromArgb(53, 66, 27),
ArgbColor.FromArgb(101, 75, 50),
ArgbColor.FromArgb(87, 64, 43),
ArgbColor.FromArgb(71, 52, 35),
ArgbColor.FromArgb(53, 39, 27),
ArgbColor.FromArgb(50, 75, 175),
ArgbColor.FromArgb(43, 64, 151),
ArgbColor.FromArgb(36, 52, 123),
ArgbColor.FromArgb(27, 39, 93),
ArgbColor.FromArgb(125, 62, 175),
ArgbColor.FromArgb(108, 53, 151),
ArgbColor.FromArgb(88, 43, 123),
ArgbColor.FromArgb(66, 33, 93),
ArgbColor.FromArgb(75, 125, 151),
ArgbColor.FromArgb(64, 108, 130),
ArgbColor.FromArgb(52, 88, 106),
ArgbColor.FromArgb(39, 66, 80),
ArgbColor.FromArgb(239, 125, 162),
ArgbColor.FromArgb(206, 108, 140),
ArgbColor.FromArgb(168, 88, 114),
ArgbColor.FromArgb(126, 66, 86),
ArgbColor.FromArgb(125, 202, 25),
ArgbColor.FromArgb(108, 174, 21),
ArgbColor.FromArgb(88, 142, 17),
ArgbColor.FromArgb(66, 107, 13),
ArgbColor.FromArgb(225, 225, 50),
ArgbColor.FromArgb(195, 195, 43),
ArgbColor.FromArgb(159, 159, 35),
ArgbColor.FromArgb(120, 120, 27),
ArgbColor.FromArgb(101, 151, 213),
ArgbColor.FromArgb(87, 130, 183),
ArgbColor.FromArgb(71, 107, 150),
ArgbColor.FromArgb(53, 80, 112),
ArgbColor.FromArgb(176, 75, 213),
ArgbColor.FromArgb(151, 64, 183),
ArgbColor.FromArgb(124, 52, 150),
ArgbColor.FromArgb(93, 39, 112),
ArgbColor.FromArgb(213, 125, 50),
ArgbColor.FromArgb(184, 108, 43),
ArgbColor.FromArgb(150, 88, 35),
ArgbColor.FromArgb(113, 66, 27),
ArgbColor.FromArgb(244, 230, 160),
ArgbColor.FromArgb(210, 199, 138),
ArgbColor.FromArgb(172, 162, 113),
ArgbColor.FromArgb(128, 122, 85),
ArgbColor.FromArgb(149, 108, 76),
ArgbColor.FromArgb(128, 93, 65),
ArgbColor.FromArgb(105, 75, 53),
ArgbColor.FromArgb(78, 56, 39),
ArgbColor.FromArgb(111, 2, 0),
ArgbColor.FromArgb(95, 1, 0),
ArgbColor.FromArgb(78, 1, 0),
ArgbColor.FromArgb(58, 1, 0),
ArgbColor.FromArgb(91, 216, 210),
ArgbColor.FromArgb(78, 186, 180),
ArgbColor.FromArgb(63, 152, 148),
ArgbColor.FromArgb(47, 114, 110),
ArgbColor.FromArgb(125, 176, 55),
ArgbColor.FromArgb(108, 151, 47),
ArgbColor.FromArgb(88, 124, 38),
ArgbColor.FromArgb(66, 93, 29),
ArgbColor.FromArgb(247, 235, 76),
ArgbColor.FromArgb(212, 203, 65),
ArgbColor.FromArgb(174, 166, 53),
ArgbColor.FromArgb(130, 125, 39),
ArgbColor.FromArgb(158, 158, 251),
ArgbColor.FromArgb(136, 136, 217),
ArgbColor.FromArgb(111, 111, 177),
ArgbColor.FromArgb(83, 83, 133),
ArgbColor.FromArgb(0, 123, 0),
ArgbColor.FromArgb(0, 105, 0),
ArgbColor.FromArgb(0, 86, 0),
ArgbColor.FromArgb(0, 64, 0),
ArgbColor.FromArgb(63, 63, 251),
ArgbColor.FromArgb(5, 54, 217),
ArgbColor.FromArgb(44, 44, 177),
ArgbColor.FromArgb(33, 33, 133),
ArgbColor.FromArgb(141, 118, 71),
ArgbColor.FromArgb(122, 101, 61),
ArgbColor.FromArgb(99, 83, 49),
ArgbColor.FromArgb(74, 62, 37),
ArgbColor.FromArgb(151, 50, 50),
ArgbColor.FromArgb(130, 43, 43),
ArgbColor.FromArgb(107, 36, 35),
ArgbColor.FromArgb(80, 27, 27),
ArgbColor.FromArgb(73, 126, 251),
ArgbColor.FromArgb(62, 109, 217),
ArgbColor.FromArgb(51, 89, 117),
ArgbColor.FromArgb(39, 66, 133),
ArgbColor.FromArgb(0, 214, 57),
ArgbColor.FromArgb(0, 185, 49),
ArgbColor.FromArgb(0, 151, 39),
ArgbColor.FromArgb(0, 113, 30),
ArgbColor.FromArgb(127, 85, 48),
ArgbColor.FromArgb(110, 73, 41),
ArgbColor.FromArgb(90, 59, 33),
ArgbColor.FromArgb(67, 44, 25),
ArgbColor.FromArgb(207, 175, 158),
ArgbColor.FromArgb(178, 150, 136),
ArgbColor.FromArgb(145, 123, 111),
ArgbColor.FromArgb(109, 92, 84),
ArgbColor.FromArgb(157, 81, 35),
ArgbColor.FromArgb(135, 69, 31),
ArgbColor.FromArgb(111, 56, 25),
ArgbColor.FromArgb(83, 42, 19),
ArgbColor.FromArgb(147, 86, 106),
ArgbColor.FromArgb(126, 74, 92),
ArgbColor.FromArgb(104, 60, 75),
ArgbColor.FromArgb(77, 45, 56),
ArgbColor.FromArgb(111, 107, 136),
ArgbColor.FromArgb(95, 92, 117),
ArgbColor.FromArgb(78, 75, 95),
ArgbColor.FromArgb(58, 56, 72),
ArgbColor.FromArgb(184, 131, 35),
ArgbColor.FromArgb(158, 113, 31),
ArgbColor.FromArgb(129, 92, 25),
ArgbColor.FromArgb(97, 69, 19),
ArgbColor.FromArgb(102, 116, 52),
ArgbColor.FromArgb(87, 99, 44),
ArgbColor.FromArgb(71, 81, 36),
ArgbColor.FromArgb(53, 60, 28),
ArgbColor.FromArgb(158, 76, 77),
ArgbColor.FromArgb(136, 65, 66),
ArgbColor.FromArgb(111, 53, 54),
ArgbColor.FromArgb(84, 39, 40),
ArgbColor.FromArgb(56, 40, 34),
ArgbColor.FromArgb(48, 35, 30),
ArgbColor.FromArgb(39, 28, 24),
ArgbColor.FromArgb(30, 21, 18),
ArgbColor.FromArgb(133, 106, 96),
ArgbColor.FromArgb(115, 91, 83),
ArgbColor.FromArgb(94, 74, 68),
ArgbColor.FromArgb(70, 55, 50),
ArgbColor.FromArgb(121, 72, 87),
ArgbColor.FromArgb(104, 61, 74),
ArgbColor.FromArgb(85, 50, 61),
ArgbColor.FromArgb(63, 38, 45),
ArgbColor.FromArgb(75, 61, 91),
ArgbColor.FromArgb(64, 52, 78),
ArgbColor.FromArgb(52, 42, 63),
ArgbColor.FromArgb(39, 32, 47),
ArgbColor.FromArgb(75, 49, 34),
ArgbColor.FromArgb(64, 42, 30),
ArgbColor.FromArgb(52, 35, 24),
ArgbColor.FromArgb(39, 26, 18),
ArgbColor.FromArgb(75, 81, 41),
ArgbColor.FromArgb(64, 69, 35),
ArgbColor.FromArgb(52, 56, 29),
ArgbColor.FromArgb(39, 42, 22),
ArgbColor.FromArgb(140, 59, 45),
ArgbColor.FromArgb(121, 50, 38),
ArgbColor.FromArgb(99, 41, 31),
ArgbColor.FromArgb(74, 31, 24),
ArgbColor.FromArgb(20, 178, 129),
ArgbColor.FromArgb(17, 153, 111),
ArgbColor.FromArgb(14, 125, 90),
ArgbColor.FromArgb(10, 94, 68),
ArgbColor.FromArgb(57, 140, 136),
ArgbColor.FromArgb(49, 121, 117),
ArgbColor.FromArgb(39, 99, 95),
ArgbColor.FromArgb(30, 74, 72),
ArgbColor.FromArgb(85, 43, 60),
ArgbColor.FromArgb(73, 37, 51),
ArgbColor.FromArgb(59, 31, 42),
ArgbColor.FromArgb(44, 23, 31),
ArgbColor.FromArgb(22, 125, 130),
ArgbColor.FromArgb(18, 107, 112),
ArgbColor.FromArgb(15, 87, 91),
ArgbColor.FromArgb(11, 65, 68),
ArgbColor.FromArgb(146, 62, 94),
ArgbColor.FromArgb(125, 53, 81),
ArgbColor.FromArgb(103, 43, 66),
ArgbColor.FromArgb(77, 33, 50),
ArgbColor.FromArgb(91, 25, 28),
ArgbColor.FromArgb(78, 21, 24),
ArgbColor.FromArgb(131, 33, 33), // was 63, 17, 19 changed due to typo
ArgbColor.FromArgb(99, 25, 25), // was 47, 13, 15 changed due to typo
ArgbColor.FromArgb(187, 47, 48),
ArgbColor.FromArgb(161, 40, 41),
ArgbColor.FromArgb(131, 33, 33),
ArgbColor.FromArgb(99, 25, 24)
})
{
}
public RandomDithering(int seed, ArgbColor white, ArgbColor black)
{
_random = new Random(seed);
_white = white;
_black = black;
}
public RandomDithering(ArgbColor white, ArgbColor black)
: this(Environment.TickCount, white, black)
{
}