2 ms·

Thanks for the link. I was familiar with google's system from when I worked there but couldn't find a good description of it so I assumed it was purely internal

by plesner 12y ago

Thanks for the link. I was familiar with google's system from when I worked there but couldn't find a good description of it so I assumed it was purely internal.

gbhn 12y ago
The S2 library is here: https://code.google.com/p/s2-geometry-library/ https://code.google.com/p/s2-geometry-library/ It's based on the hilbert curve.