singlePerlinFractalFBM2 method

double singlePerlinFractalFBM2(
  1. double x,
  2. double y
)

Implementation

double singlePerlinFractalFBM2(double x, double y) {
  var seed = baseNoise.seed;
  var dx = x;
  var dy = y;
  var sum = baseNoise.singlePerlin2(seed, dx, dy);
  var amp = 1.0;

  for (var i = 1; i < octaves; i++) {
    dx *= lacunarity;
    dy *= lacunarity;

    amp *= gain;
    sum += baseNoise.singlePerlin2(++seed, dx, dy) * amp;
  }

  return sum * fractalBounding;
}