Log-spherical Mapping in SDF Raymarching
https://www.osar.fr/notes/logspherical/ [www.osar.fr]
2019-03-15 16:26
tags:
gl
graphics
interactive
programming
visualization
In this post, I’ll describe a set of techniques for manipulating signed distance fields (SDFs) allowing the creation of self-similar geometries like the flower above. Although these types of geometries have been known and renderable for a long time, I believe the techniques described here offer much unexplored creative potential, since they allow the creation of raymarchable SDFs of self-similar geometries with an infinite level of visual recursion, which can be explored in realtime on the average current-gen graphics card. This is done by crafting distance functions based on the log-spherical mapping, which I’ll explain starting with basic tilings and building up to the recursive shell transformation.
source: L