public override double GetValue(double x, double y, double z)
{
double value = 0.0;
double curPersistence = 1.0;
//double nx, ny, nz;
x *= Frequency;
y *= Frequency;
z *= Frequency;
for (int currentOctave = 0; currentOctave < OctaveCount; currentOctave++)
{
long seed = (Seed + currentOctave) & 0xffffffff;
/*nx = Math.MakeInt32Range(x);
* ny = Math.MakeInt32Range(y);
* nz = Math.MakeInt32Range(z);*/
double signal = GeneratorBase.GradientCoherentNoise(x, y, z, (int)seed, Quality);
//signal = cachedNoise3(x, y, z);
value += signal * curPersistence;
x *= Lacunarity;
y *= Lacunarity;
z *= Lacunarity;
curPersistence *= Persistence;
}
return(value);
}
public override double GetValue(double x, double y, double z)
{
double value = 0.0;
double curPersistence = 1.0;
//double nx, ny, nz;
x *= Frequency;
y *= Frequency;
z *= Frequency;
for (int currentOctave = 0; currentOctave < OctaveCount; currentOctave++)
{
long seed = (Seed + currentOctave) & 0xffffffff;
double signal = GeneratorBase.GradientCoherentNoise(x, y, z, (int)seed, NoiseQuality);
signal = 2.0 * System.Math.Abs(signal) - 1.0;
value += signal * curPersistence;
x *= Lacunarity;
y *= Lacunarity;
z *= Lacunarity;
curPersistence *= Persistence;
}
value += 0.5;
return(value);
}
public override double GetValue(double x, double y, double z)
{
x *= Frequency;
y *= Frequency;
z *= Frequency;
double value = 0.0;
double weight = 1.0;
const double offset = 1.0;
const double gain = 2.0;
for (int currentOctave = 0; currentOctave < OctaveCount; currentOctave++)
{
//double nx, ny, nz;
/* nx = Math.MakeInt32Range(x);
* ny = Math.MakeInt32Range(y);
* nz = Math.MakeInt32Range(z);*/
long seed = (Seed + currentOctave) & 0x7fffffff;
double signal = GeneratorBase.GradientCoherentNoise(x, y, z,
(int)seed, NoiseQuality);
// Make the ridges.
signal = Math.Abs(signal);
signal = offset - signal;
// Square the signal to increase the sharpness of the ridges.
signal *= signal;
// The weighting from the previous octave is applied to the signal.
// Larger values have higher weights, producing sharp points along the
// ridges.
signal *= weight;
// Weight successive contributions by the previous signal.
weight = signal * gain;
if (weight > 1.0)
{
weight = 1.0;
}
if (weight < 0.0)
{
weight = 0.0;
}
// Add the signal to the output value.
value += (signal * SpectralWeights[currentOctave]);
// Go to the next octave.
x *= Lacunarity;
y *= Lacunarity;
z *= Lacunarity;
}
return((value * 1.25) - 1.0);
}