FWIW: I (@rondy) am not the creator of the content shared here, which is an excerpt from Edmond Lau's book. I simply copied and pasted it from another location and saved it as a personal note, before it gained popularity on news.ycombinator.com. Unfortunately, I cannot recall the exact origin of the original source, nor was I able to find the author's name, so I am can't provide the appropriate credits.
Unity has built-in support for hotswapping, which is a huge productivity booster. This feature works not only with graphics assets like bitmaps and meshes, but also with code: if you edit the source and save it, the editor will save the state of the running game, compile and load the new code, then load the saved state and continue where it left off. Unfortunately, this feature is very easy to break, and most available 3rd party plugins have little regard for it.
It looks like there’s a lot of confusion about hotswapping in Unity, and many developers are not even aware of its existence – which is no wonder if their only experience is seeing lots of errors on the console when they forget to stop the game before recompiling... This document is an attempt to clear up some of this confusion.
Nota bene, I’m not a Unity developer, so everything below is based on blog posts and experimentation. Corrections are most welcome!
Please consider using http://lygia.xyz instead of copy/pasting this functions. It expand suport for voronoi, voronoise, fbm, noise, worley, noise, derivatives and much more, through simple file dependencies. Take a look to https://github.com/patriciogonzalezvivo/lygia/tree/main/generative
float rand(float n){return fract(sin(n) * 43758.5453123);}
float noise(float p){
float fl = floor(p);
float fc = fract(p);
| // float->half variants. | |
| // by Fabian "ryg" Giesen. | |
| // | |
| // I hereby place this code in the public domain, as per the terms of the | |
| // CC0 license: | |
| // | |
| // https://creativecommons.org/publicdomain/zero/1.0/ | |
| // | |
| // float_to_half_full: This is basically the ISPC stdlib code, except | |
| // I preserve the sign of NaNs (any good reason not to?) |
| // Ported from Stefan Gustavson's java implementation | |
| // http://staffwww.itn.liu.se/~stegu/simplexnoise/simplexnoise.pdf | |
| // Read Stefan's excellent paper for details on how this code works. | |
| // | |
| // Sean McCullough banksean@gmail.com | |
| /** | |
| * You can pass in a random number generator object if you like. | |
| * It is assumed to have a random() method. | |
| */ |
