Perlin / Simplex Noise (plasma effect)

Scruffynerf · December 3, 2020, 1:05pm

For those who are curious (I was)

And a js implementation

brubsby/cozyvec/blob/master/desktop/sources/scripts/lib/simplexnoise.js

/*
 * A fast javascript implementation of simplex noise by Jonas Wagner

Based on a speed-improved simplex noise algorithm for 2D, 3D and 4D in Java.
Which is based on example code by Stefan Gustavson (stegu@itn.liu.se).
With Optimisations by Peter Eastman (peastman@drizzle.stanford.edu).
Better rank ordering method by Stefan Gustavson in 2012.

 Copyright (c) 2018 Jonas Wagner

 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
 in the Software without restriction, including without limitation the rights
 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 copies of the Software, and to permit persons to whom the Software is
 furnished to do so, subject to the following conditions:

 The above copyright notice and this permission notice shall be included in all
 copies or substantial portions of the Software.

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I have not compared this to @jeff’s version but it does do 3d and even 4d noise.

(I went down a rabbit hole on tixy.land code and found 3d version of it, hi res version of it, and more… and this was part of the rabbit hole.)