double C3DPerlinNoise::generateNoise1D(double x)
{
x *= _frequency;
int ix = (int)x;
double s = x - ix;
ix += _seed;
double r1 = noise1d(ix);
double r2 = noise1d(ix + 1);
return interpolate(r1, r2, s) * _factorScale + _factorAdd;
}
float noise3d(uint x, uint y, uint z) {
return noise1d(x + y * 67 + z * 101);
}
float noise2d(uint x, uint y) {
return noise1d(x + y * 71);
}
static inline double noise2d(int x, int y)
{
int n = x + y * 57;
return noise1d(n);
}