private _PerlinNoiseTextureSampler(int repeat, int octaves, float persistence, int randomSeed = 177)
{
if (repeat <= 0)
{
repeat = -1; // repetition is disabled
}
_Scale = repeat > 0 ? new SizeF(repeat, repeat) : new SizeF(1, 1);
_Perlin = new Perlin_Tileable(randomSeed, repeat);
_Depth = 0;
_Octaves = octaves;
_Persistence = persistence;
}
private static void _FillPerlinNoise(this Image <HalfSingle> image, float scale = 16, int repeat = 0, int octaves = 8, double persistence = 0.1f, int randomSeed = 177)
{
var generator = new Perlin_Tileable(randomSeed, repeat);
for (int y = 0; y < image.Height; ++y)
{
for (int x = 0; x < image.Width; ++x)
{
var xx = (float)x / scale;
var yy = (float)y / scale;
var p = (float)generator.OctavePerlin(xx, yy, 0, octaves, persistence);
var pp = new HalfSingle(p);
image[x, y] = pp;
}
}
image._MutateAutoLevels();
}