perlinNoise
Compute Perlin noise.
Perlin noise can be used to simulate natural, flowing gradients such as terrain, water or smoke.
The input to the Perlin noise function is a three-dimensional point that “travels” across the noise landscape. Here we are in the center:
g.perlinNoise(0, 0, 0);
A bit further on the X axis the value increases slightly:
g.perlinNoise(0.1, 0, 0);