Add optimizer methods in Mesh_2 https://cgal.geometryfactory.com/CGAL/Members/wiki/Features/Small_Features/lloyd_optimize_mesh_2
3D mesh package, from Laurent Rineau
Add optimizer methods in Mesh_2 https://cgal.geometryfactory.com/CGAL/Members/wiki/Features/Small_Features/lloyd_optimize_mesh_2
3D mesh package, from Laurent Rineau