Simplex3 value range

[arcanis]

Hi,

What is the value range for Simplex3 ? According to the example source code (Math.abs(simplex(...))*256) it seems to be [-1;1], but I haven't been able to get a value greater than 0.5, and I never seen white color on the demo page.

Thanks,

[josephg]

I'm not sure. I figured it out at one point, but I've forgotten. It would be good to normalize simple2 and simplex3 to the [-1,1] range.

This repository is a GPU version of the same code:
BrianSharpe/GPU-Noise-Lib@e4fa623
... and he's normalized the simplex functions, but I'm not sure how those normalization factors work. The math is explained briefly here:
http://briansharpe.wordpress.com/2012/01/13/simplex-noise/#comment-36

It'd be good to dig into that and make noisejs normalized too.