CGAL users discussion list

[Guillaume Damiand <>]

Hi,

Polyhedron must use a kernel as template argument; and 
linear_cell_complex must be templated with a lcc traits class.

Here the correct code (which compile for me)

#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
#include <CGAL/Polyhedron_3.h>
#include <CGAL/Linear_cell_complex.h>
#include <CGAL/Linear_cell_complex_constructors.h>

typedef CGAL::Exact_predicates_inexact_constructions_kernel Kernel;
typedef Kernel::Point_3 Point_3;

typedef CGAL::Polyhedron_3<Kernel> Polyhedron;

typedef 
CGAL::Linear_cell_complex<3,3,CGAL::Linear_cell_complex_traits<3, 
Kernel> > LCC_3;
typedef LCC_3::Dart_handle Dart_handle;

int main()
{
  Point_3 p(1.0, 0.0, 0.0);
  Point_3 q(0.0, 1.0, 0.0);
  Point_3 r(0.0, 0.0, 1.0);
  Point_3 s(0.0, 0.0, 0.0);

  Polyhedron P;
  LCC_3 lcc;

  P.make_tetrahedron(p, q, r, s);
  CGAL::import_from_polyhedron_3<LCC_3, Polyhedron>(lcc, P);
  lcc.display_characteristics(std::cout);

  return 1;
}



Guillaume


Le 04/04/2013 11:38, sdg a écrit :
> I read this package and found this function "import_from_polyhedron_3" may
> change Polyhedron_3 to LCC.
>
> Questions:
> 1. Do I have to change kernel from
> Exact_predicates_exact_constructions_kernel to LCC::Traits?
> 2. I tried to make a small program, but it failed. The following is my code.
>
> typedef CGAL::Linear_cell_complex<3> LCC_3;
> typedef LCC_3::Traits Kernel;
> typedef LCC_3::Dart_handle Dart_handle;
> typedef Kernel::Point_3 Point_3;
>
> int main(){
>      Point_3 p(1.0, 0.0, 0.0);
>      Point_3 q(0.0, 1.0, 0.0);
>      Point_3 r(0.0, 0.0, 1.0);
>      Point_3 s(0.0, 0.0, 0.0);
>
>      CGAL::Polyhedron_3<Kernel> P;
>      LCC_3 lcc;
>
>      P.make_tetrahedron(p, q, r, s);
>      CGAL::import_from_polyhedron_3<LCC_3, CGAL::Polyhedron_3&lt;Kernel>
> > (lcc, P);
>      lcc.display_characteristics(std::cout);
>
> }
>
> The error message is "Combinatorial_map_constructors.h:52: error: there are
> no arguments to 'CGAL_assertion' that depend on a template parameter, so a
> declaration of 'CGAL_assertion' must be available". What's wrong?
>
>
>
> --
> View this message in context: 
> http://cgal-discuss.949826.n4.nabble.com/union-two-polyhedron-3-tp4657092p4657115.html
> Sent from the cgal-discuss mailing list archive at Nabble.com.


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Guillaume DAMIAND

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