public static float Noise(float x, float y, float z, uint octaves, float atten = .5f)
{
float wsum = 0;
float w = 1;
float freq = 1;
double v = 0;
for (uint i = 0; i < octaves; i++)
{
v += w * SimplexNoise.Noise(x * freq, y * freq, z * freq);
wsum += w;
w *= atten;
freq *= 2;
}
return((float)(v / wsum));
}
float DefaultHeightFunc(float x, float y, float z)
{
return((float)SimplexNoise.Noise(x, y, z));
}