Nice detailed article. There is also some interesting information about making quadtree-based quad spheres (https://en.wikipedia.org/wiki/Quadrilateralized_sph

Nice detailed article. There is also some interesting information about making quadtree-based quad spheres (https://en.wikipedia.org/wiki/Quadrilateralized_spherical_cube https://en.wikipedia.org/wiki/Quadrilateralized_spherical_cu...) in this presentation about the making of Kerbal Space Program, at 30min 40s: https://www.youtube.com/watch?v=mXTxQko-JH0 https://www.youtube.com/watch?v=mXTxQko-JH0 (the whole thing is worth the watch).