public static Color[] Rough(int w, int h, Color color)
{
var pixels = None(w, h, color);
WhiteNoise.SetFrequency(0.25f);
WhiteNoise.SetFractalOctaves(2);
WhiteNoise.SetFractalType(FractalType.Billow);
for (int x = 0; x < w; x++)
{
for (int y = 0; y < h; y++)
{
var val = WhiteNoise.GetSimplexFractal(x, y);
var multi = PixelMath.Map(val, -1, 1, 0, 1);
pixels[(y * w) + x].A = (byte)(pixels[(y * w) + x].A * multi);
}
}
return(pixels);
}