CGAL users discussion list

["Sebastien Loriot (GeometryFactory)" <>]

The attached file should be working.

Sebastien.

On 01/29/2019 08:23 PM, lsanti wrote:
> Hi all,
>
> I'm trying to inherit from CGAL::Surface_mesh since it would be very
> convenient for me to add some custom behavior to the meshes. I've already
> followed some guidelines I found in other threads (e.g.  this one
> <http://cgal-discuss.949826.n4.nabble.com/Polyhedron-vertex-descriptor-td4658859.html>
> ) but still I have a couple of compilation issues when trying to call
> functions from CGAL::Polygon_mesh_processing --namely,
> /is_outward_oriented()/, /volume()/ and /triangulate_faces()/.
>
> This is my code so far:
>
> typedef CGAL::Surface_mesh<CGAL::Simple_cartesian&lt;double>::Point_3>
> CGALMesh;
>
> namespace retQSS
> {
>
> class Mesh : public CGALMesh
> {
> public:
>         Mesh() {};
>         virtual ~Mesh() {};
> };
>
> }
>
> namespace boost
> {
>         template<>
>         struct graph_traits<retQSS::Mesh> :
>                 public boost::graph_traits<CGALMesh>
>         {};
>
>         template<>
>         struct graph_traits<retQSS::Mesh const> :
>                 public boost::graph_traits<CGALMesh const>
>         {};
>
>         template <class Tag>
>         struct property_map<retQSS::Mesh, Tag> :
>                 public property_map<CGALMesh, Tag>
>         {};
> }
>
> ...and the first compilation error I get when calling the aforementioned
> functions is:
>
> error: no type named ‘value_type’ in ‘struct boost::property_traits<bool>’
>
> I think I could be missing some additional structs in the boost namespace.
> Any help would be appreciated!
>
> Thanks in advance,
>
> Lucio
>
>
>
> --
> Sent from: http://cgal-discuss.949826.n4.nabble.com/
#include <CGAL/Simple_cartesian.h>
#include <CGAL/Surface_mesh.h>


namespace MyNameSpace {

struct DerivedMesh: public CGAL::Surface_mesh<CGAL::Simple_cartesian<double>::Point_3>
{
  typedef CGAL::Surface_mesh<CGAL::Simple_cartesian<double>::Point_3> Base;
  
};

}

namespace boost {

  template <>
  struct graph_traits<MyNameSpace::DerivedMesh>
    : public graph_traits<MyNameSpace::DerivedMesh::Base>
  {};

}

namespace boost {

  template <class Tag>
  struct property_map<MyNameSpace::DerivedMesh, Tag >
    : public property_map<MyNameSpace::DerivedMesh::Base, Tag >
  {};

  template <class T>
  struct property_map<MyNameSpace::DerivedMesh, CGAL::dynamic_halfedge_property_t<T> >
    : public property_map<MyNameSpace::DerivedMesh::Base, CGAL::dynamic_halfedge_property_t<T> >
  {};

  template <class T>
  struct property_map<MyNameSpace::DerivedMesh, CGAL::dynamic_edge_property_t<T> >
    : public property_map<MyNameSpace::DerivedMesh::Base, CGAL::dynamic_edge_property_t<T> >
  {};

}




namespace CGAL {
  
template<class Tag>
struct graph_has_property<MyNameSpace::DerivedMesh, Tag>
  : public graph_has_property<MyNameSpace::DerivedMesh::Base, Tag> {};


}

namespace MyNameSpace
{
  template <typename T>
  typename boost::property_map<DerivedMesh, CGAL::dynamic_halfedge_property_t<T> >::const_type
  get(const CGAL::dynamic_halfedge_property_t<T>& tag, DerivedMesh& dm)
  {
    return get(tag, static_cast<DerivedMesh::Base&>(dm));
  }

  template <typename T>
  typename boost::property_map<DerivedMesh, CGAL::dynamic_edge_property_t<T> >::const_type
  get(const CGAL::dynamic_edge_property_t<T>& tag, DerivedMesh& dm)
  {
    return get(tag, static_cast<DerivedMesh::Base&>(dm));
  }
}