cmarot

You can look into [HXT](https://gitlab.onelab.info/gmsh/gmsh/tree/master/contrib/hxt) for that. More specifically [this file](https://gitlab.onelab.info/gmsh/gmsh/-/blob/master/contrib/h...) which shows how create the Delaunay tetrahedralization of a set of point using the tetMesh library. It's a shameless plug since I am the author of the HXT core and tet meshing stuffs.

Exactly. In addition, sometimes a good software "only" makes you save 1% of your time, but that 1% was a terrible burden that induced mental fatigue, made you take bad decisions, etc. It can even make a great Engineer stay when he would have left with the previous version.

What is the geometry kernel behind this for CAD ?