A simple 2D perlin noise function for Lua. DO NOT use this in any security-related things! The actuall implementation was heavily inspired by this Gist: https://gist.github.com/nowl/828013

make

The build module is perlin.so. Install by putting perlin.so in Lua's package.cpath:

lua -e "print("", package.cpath:gsub(';', '\n'):gsub('?', '[?]'))"

The library exports 1 function, noise2d:

perlin2d(x, y, freq, depth, seed)

parameters x and y are the position in the noise function, freq is the frequency of the noise function, and depth is the ammount of samples to generate.

Also see test_pgm.lua. This file will generate a pgm file containing perlin noise. Call as

./test_pgm [filename] [freq] [depth] [seed]

• 1D/3D Noise function
• non-interpolated 1d/2d/3d noise functions