CGAL users discussion list

["Max" <>]

Hi Christoph,

I have ever had almost exactly the same hard days as yours playing
with Nef_3. And I'm still stuck and desperately seeking help.

During that time, I've been given _much_ precious support/help
from Peter and other CGAL guys. I really appreaciate it. It's a drop
of sun ray in my darkness of struggling. :-)

The kernel types that can get compile considering our needs,
support reading float values from an off file for constructing a
Polyhedron_3,
includes (probably there're more):

CGAL::Simple_cartesian<CGAL::Gmpq> 
CGAL::Cartesian<CGAL::Gmpq>
CGAL::Exact_predicates_exact_constructions_kernel Kernel

And with my code/data set I found the last one is the most efficient. At the

present time I'm stuck with the intersection operation of a Nef_3 and a
Plane_3.
I hope you could have a look at my posts regardings such stuffs and 
probably you could give me some hints. :-)

With all best wishes including hope of your happy time playing with nef_3.
:-)

B/Rgds
Max

> Hi Andreas,
> 
> interesting details to know, ok. Now i used the
> 
> typedef CGAL::Simple_cartesian<CGAL::Gmpq>  Kernel;
> 
> as you suggested in the beginning of the thread. After six minutes and
> 1.6 Gig maximum working set size the program crashed again with the same
> message, when constructing the Nef_polyhedron_3 from the Polyhedron_3.
> 
> So my question is: which kernel you would recommend? It should support
> reading float values from an off file for constructing a Polyhedron_3.
> 
> The mesh consists of 188776 vertices and 378284 triangle facets.
> 
> Kind regards,
> Christoph