CGAL users discussion list

Hello,

I am very new to CGAL, and I am wondering if it is possible to do
solid/solid intersections. 

It is funny to see that infact, I have the same question as Cedric
Le Maitre (he sent a mail today)...

More precisely, I have two solids described by two closed Polyhedra
(using 3 and 4 nodes faces).

I would like to get the Polyhedra that represents the difference between
the two solids.

I tried using the Nef_polyhedron_3 classes :

1- construct two Polyhedron
2- construct the Nef_polyhedron from the 2 polyhedron
3- intersect the 2 Nef_polyhedron
4- convert the result back to a Polyhedron

When I construct the nef associated with one of the Polyhedrons, I
get the following error :

CGAL error: assertion violation!
Expr: pe_prev->facet()->plane().
has_on(pe_prev->opposite()->vertex()->point())
File: ./cgal_build/CGAL-3.2.1/include/CGAL/Nef_3/polyhedron_3_to_nef_3.h
Line: 151

I had a look in this file, but the error is not so obvious, at least for
a 'CGAL-beginner' like me.


Could anyone guide me, and tell me if such operation is available in
CGAL, and if yes, how to achieve it ? Any help would be greatly
appreciated.


Best Regards,

Frederic.