Yocto/Noise: Noise functions

Yocto/Noise provides a Perlin noise implementation. Yocto/Noise is implemented in yocto_noise.h.

Noise functions

Use perlin_noise(p, w) to generate Perlin noise with optional wrapping. Returned values are in the range [0, 1] following the Renderman convention and to ensure that all noise functions return values in the same range. For fractal variations, use perlin_ridge(p, l, g, o, f, w), perlin_fbm(p, l, g, o, w) and perlin_turbulence(p, l, g, o, w). Each fractal version is defined by its lacunarity l, its gain g, the number of octaves o and possibly an offet.

auto p = vec3f{0,0,0};
auto n = perlin_noise(p);
auto lacunarity = 2.0f, gain = 0.5.0f, , offset = 1.0f; auto octaves = 6;
auto n = perlin_ridge(p, lacunarity, gain, octaves, offset);
auto n = perlin_fbm(p, lacunarity, gain, octaves);
auto n = perlin_turbulence(p, lacunarity, gain, octaves);