https://www.cgal.org/
https://github.com/CGAL/cgal

https://doc.cgal.org/latest/Manual/index.html
https://cgal.geometryfactory.com/CGAL/doc/master/Manual/index.html
https://cgal.geometryfactory.com/CGAL/testsuite/

https://github.com/CGAL/cgal/wiki/Guidelines