ref: 213c3a4e99c3085ee89fda550897213abbc888ad
parent: 239a319b41474a35e4c9c4b7c6ae3c6e0b0b7185
author: rodri <rgl@antares-labs.eu>
date: Mon Jun 10 11:59:57 EDT 2024
add spotlight params and a light color shading routine. other things. among these other things are clamping the color channels to [0,1] internally, and adding a modulation function for mixing colors/points.