CGAL users discussion list

["Sebastien Loriot (GeometryFactory)" <>]

Exact_predicates_exact_constructions_kernel_with_sqrt.h is a number
type really on Core_expr which requires large amount of memory
depending on the operations done.

Except if you really need the sqrt to be exact, I would suggest to use 
another kernel.

Sebastien.

On 04/06/2013 09:44 AM, Renato wrote:
> I'm using the kernel #include
> <CGAL/Exact_predicates_exact_constructions_kernel_with_sqrt.h>  because I
> intend to use CSG operations.
>
> The normals are computed by:
>
> ---------------------------------------------------------------------
> void compute_normals_per_facet()
> {
>      std::for_each(facets_begin(),facets_end(), Facet_normal());
> }               
>
> ...
>
> struct Facet_normal
> {
>      template<class Facet>
>      void operator()(Facet&  f)
>     {
>          typename Facet::Halfedge_handle h = f.halfedge();
>          typename Facet::Normal_3 normal = CGAL::cross_product(
>                                    h->next()->vertex()->point() -
> h->vertex()->point(),
>                                    h->next()->next()->vertex()->point() -
> h->next()->vertex()->point());
>
>          f.normal() = normal / CGAL::sqrt((normal * normal));
>     }
> };
> ---------------------------------------------------------------------
>
> The f.normal() has correct values and everything works ok, but the computer
> memory is filled very quickly (~2GB) and the program crashes.
> I think it is expected.I have searched the cgal-discuss for answer but I've
> got no solution.
> Is there a way to have it working?
>
> Thanks in advance!
>
>
>
> --
> View this message in context: 
> http://cgal-discuss.949826.n4.nabble.com/Memory-fills-up-very-fast-and-the-program-crashes-tp4657129.html
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