CGAL users discussion list

["Sebastien Loriot (GeometryFactory)" <>]

 wrote:
> Hi,
> thank you for your reply!
>
> <In your code, I would say that the intersection does not show up
> <because the intersection is computed using a kernel with inexact
> <constructions.
>
> The kernel choice was one of my guesses. I had found a segmentation fault
> using a CGAL::Simple_cartesian<double> (as in AABB examples) and a lot of
> errors in make_mesh/refine_mesh when choosing a
> CGAL::Exact_predicates_exact_constructions_kernel (or
> Exact_predicates_exact_constructions_kernel_with_sqrt).
>
> Thanks again
You need a kernel with exact constructions only for computing the 
intersection points.

You probably need to use CGAL::Cartesian_converter

http://www.cgal.org/Manual/latest/doc_html/cgal_manual/Kernel_23_ref/Class_Cartesian_converter.html

Sebastien.