There are no vertices in the code. Everything is done with CSG functions. If you are unfamiliar with them, let's just say that they are functions describing if a coordinate is inside or outside an object.
I believe this technique was first popularised in the demoscene, because it makes for some extremely concise procedural descriptions of 3D scenes:
I believe this technique was first popularised in the demoscene, because it makes for some extremely concise procedural descriptions of 3D scenes:
https://iquilezles.org/www/articles/distfunctions/distfuncti...