public INoise Generate() {
LockBitmap bitmap = new LockBitmap(new Bitmap(w, h));
const int featureSize = 16;
values = new double[w * h];
for (int y = 0; y < h; y += featureSize) {
for (int x = 0; x < h; x += featureSize) {
SetSample(x, y, Randomizer.NextDouble() * 2 - 1);
}
}
int stepSize = featureSize;
double scale = 1.0f / w;
double scaleMod = 1f;
do {
int halfStep = stepSize / 2;
for (int y = 0; y < w; y += stepSize) {
for (int x = 0; x < w; x += stepSize) {
double a = Sample(x, y);
double b = Sample(x + stepSize, y);
double c = Sample(x, y + stepSize);
double d = Sample(x + stepSize, y + stepSize);
double e = (a + b + c + d) / 4.0 + (Randomizer.NextDouble() * 2 - 1) * stepSize * scale;
SetSample(x + halfStep, y + halfStep, e);
}
}
for (int y = 0; y < w; y += stepSize) {
for (int x = 0; x < w; x += stepSize) {
double a = Sample(x, y);
double b = Sample(x + stepSize, y);
double c = Sample(x, y + stepSize);
double d = Sample(x + halfStep, y + halfStep);
double e = Sample(x + halfStep, y - halfStep);
double f = Sample(x - halfStep, y + halfStep);
double H = (a + b + d + e) / 4.0 + (Randomizer.NextDouble() * 2 - 1) * stepSize * scale * 0.5;
double g = (a + c + d + f) / 4.0 + (Randomizer.NextDouble() * 2 - 1) * stepSize * scale * 0.5;
SetSample(x + halfStep, y, H);
SetSample(x, y + halfStep, g);
}
}
stepSize /= 2;
scale *= (scaleMod + 0.8);
scaleMod *= 0.3;
} while (stepSize > 1);
bitmap.Lock();
for (int i = 0; i < values.Length; i++) {
double val = values[i];
int x = i % w;
int y = i / w;
byte c = (byte) Math.Abs(255 * val);
Color col = Color.FromArgb(c, c, c);
bitmap.SetPixel(x, y, col);
}
this.NoiseMap = bitmap.Unlock();
return this;
}
public INoise Generate() {
LockBitmap lockNoise = new LockBitmap(new Bitmap(Width, Height));
lockNoise.Lock();
noiseValues = new double[Width * Height];
Generate(0, 0, 0, 5, 5, 5, 5, 5, 5, 2);
for (int i = 0; i < lockNoise.Height; i++) {
int x = i % this.Width;
int y = i / this.Width;
byte cval = (byte) (255f * noiseValues[i]);
Color col = Color.FromArgb(cval, cval, cval);
lockNoise.SetPixel(x, y, col);
}
this.NoiseMap = lockNoise.Unlock();
return this;
}
public INoise Generate() {
LockBitmap lockNoise = new LockBitmap(new Bitmap(Width, Height));
lockNoise.Lock();
Random r = new Random();
for (int y = 0; y < lockNoise.Height; y++) {
for (int x = 0; x < lockNoise.Width; x++) {
int rStart = StartRange;
int rEnd = EndRange;
if (rStart > rEnd) {
rStart = rEnd;
rEnd = rStart;
}
Color col = Color.Black;
int c1 = r.Next(rStart, rEnd);
int c2 = r.Next(rStart, rEnd);
int c3 = r.Next(rStart, rEnd);
if (!R && !G && !B) col = Color.FromArgb(c1, c1, c1);
if (R && !G && !B) col = Color.FromArgb(c2, c1, c1);
if (!R && G && !B) col = Color.FromArgb(c1, c2, c1);
if (!R && !G && B) col = Color.FromArgb(c1, c1, c2);
if (R && G && !B) col = Color.FromArgb(c1, c2, c3);
if (!R && G && B) col = Color.FromArgb(c1, c2, c3);
if (R && !G && B) col = Color.FromArgb(c1, c2, c3);
if (R && G && B) col = Color.FromArgb(c1, c2, c3);
lockNoise.SetPixel(x, y, col);
}
}
this.NoiseMap = lockNoise.Unlock();
return this;
}
