public void Math_Interp_SCurve5_Somewhere_Test_2()
{
double v = 0.9;
double expected = 0.99144;
Assert.AreEqual(expected, Math.Round(NoiseMath.SCurve5(v), 6));
}
public void Math_Interp_SCurve5_Somewhere_Test_1()
{
double v = 0.333;
double expected = 0.209383;
Assert.AreEqual(expected, Math.Round(NoiseMath.SCurve5(v), 6));
}
public void Math_Interp_SCurve5_Middle_Test()
{
double v = 0.5;
double expected = 0.5;
Assert.AreEqual(expected, NoiseMath.SCurve5(v));
}
public void Math_Interp_SCurve5_Upper_Test()
{
double v = 1;
double expected = 1;
Assert.AreEqual(expected, NoiseMath.SCurve5(v));
}
internal static double GradientCoherentNoise(double x, double y, double z, int seed, NoiseQuality noiseQuality)
{
int x0 = (x > 0.0 ? (int)x : (int)x - 1);
int x1 = x0 + 1;
int y0 = (y > 0.0 ? (int)y : (int)y - 1);
int y1 = y0 + 1;
int z0 = (z > 0.0 ? (int)z : (int)z - 1);
int z1 = z0 + 1;
double xs = 0, ys = 0, zs = 0;
switch (noiseQuality)
{
case NoiseQuality.Low:
xs = (x - x0);
ys = (y - y0);
zs = (z - z0);
break;
case NoiseQuality.Standard:
xs = NoiseMath.SCurve3(x - x0);
ys = NoiseMath.SCurve3(y - y0);
zs = NoiseMath.SCurve3(z - z0);
break;
case NoiseQuality.High:
xs = NoiseMath.SCurve5(x - x0);
ys = NoiseMath.SCurve5(y - y0);
zs = NoiseMath.SCurve5(z - z0);
break;
}
double n0 = GradientNoise(x, y, z, x0, y0, z0, seed);
double n1 = GradientNoise(x, y, z, x1, y0, z0, seed);
double ix0 = NoiseMath.LinearInterpolate(n0, n1, xs);
n0 = GradientNoise(x, y, z, x0, y1, z0, seed);
n1 = GradientNoise(x, y, z, x1, y1, z0, seed);
double ix1 = NoiseMath.LinearInterpolate(n0, n1, xs);
double iy0 = NoiseMath.LinearInterpolate(ix0, ix1, ys);
n0 = GradientNoise(x, y, z, x0, y0, z1, seed);
n1 = GradientNoise(x, y, z, x1, y0, z1, seed);
ix0 = NoiseMath.LinearInterpolate(n0, n1, xs);
n0 = GradientNoise(x, y, z, x0, y1, z1, seed);
n1 = GradientNoise(x, y, z, x1, y1, z1, seed);
ix1 = NoiseMath.LinearInterpolate(n0, n1, xs);
double iy1 = NoiseMath.LinearInterpolate(ix0, ix1, ys);
return(NoiseMath.LinearInterpolate(iy0, iy1, zs));
}
public void SCurve5Test(double a, double expected)
{
Assert.Equal(expected, NoiseMath.SCurve5(a), 6);
}
