CGAL users discussion list

[calvin_cw <>]

Hi, 

     I am trying to compile a sample hole filling code using an inherited
polyhedron class. The code is reproduced below. I keep getting the error
related to sparse matrix class. Hope someone can assist to point out the
error. thanks! 

regards
Calvin 

<<<< Start code 

#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
#include <CGAL/Polygon_mesh_processing/triangulate_hole.h>
#include <CGAL/Polyhedron_3.h>
#include <CGAL/IO/OFF_reader.h>
#include <iostream>
#include <fstream>
#include <vector>
#include <CGAL/Polyhedron_items_with_id_3.h>


typedef CGAL::Exact_predicates_inexact_constructions_kernel Kernel;

template <class Refs, class ID>
class feEdge_Surf : public CGAL::HalfedgeDS_halfedge_base< Refs,
CGAL::Tag_true, CGAL::Tag_true, CGAL::Tag_true >
{
        typedef ID size_type;
private:
        size_type mID;
public:
        size_type&       id() { return mID; }
        size_type const& id() const { return mID; }
};

template <class Refs, class Traits, class ID>
class feFace_Surf : public CGAL::HalfedgeDS_face_base<Refs, CGAL::Tag_true,
typename Traits::Plane_3>
{
        typedef ID size_type;
private:

        size_type mID;
public:
        size_type&       id() { return mID; }
        size_type const& id() const { return mID; }
};

template <class Refs, class Traits, class ID>
class feNode_Surf : public CGAL::HalfedgeDS_vertex_base< Refs,
CGAL::Tag_true, typename Traits::Point_3 >
{

        typedef typename Traits::Point_3                                      
                                                  Point_3;
        typedef ID size_type;
private:
        size_type mID;
public:
        size_type&       id() { return mID; }
        size_type const& id() const { return mID; }

        feNode_Surf(const Point_3& p) : CGAL::HalfedgeDS_vertex_base< Refs,
CGAL::Tag_true, Point_3>(p)
        {}

        feNode_Surf() : CGAL::HalfedgeDS_vertex_base< Refs, CGAL::Tag_true,
Point_3>()
        {}

};


class feSurf_Elements : public CGAL::Polyhedron_items_3
{
public:
        template <class Refs, class Traits>
        struct Vertex_wrapper {
                typedef feNode_Surf<Refs, Traits, std::size_t> Vertex;
        };

        template <class Refs, class Traits>
        struct Halfedge_wrapper {
                typedef feEdge_Surf<Refs, std::size_t> Halfedge;

        };
        template <class Refs, class Traits>
        struct Face_wrapper {
                typedef feFace_Surf<Refs, Traits, std::size_t> Face;
        };

};

typedef CGAL::Polyhedron_3<Kernel, feSurf_Elements>::Point_3    Point_fe;

typedef CGAL::Polyhedron_3<Kernel, feSurf_Elements>     Poly_3;
template<class Kernel, class feSurf_Elements>
class feSurfMesh : public Poly_3
{
public:
        typedef Point_fe Base;
};

typedef feSurfMesh<Kernel, feSurf_Elements>                                   
                  feSurfaceMesh;

namespace boost {
        template <>
        struct graph_traits<feSurfaceMesh> :
                public graph_traits<Poly_3>
        {};
} // namespace boost

namespace boost {
        template <class Tag>
        struct property_map<feSurfaceMesh, Tag> :
                public property_map<Poly_3, Tag>
        {};
} //namespace boost

namespace CGAL {
        template <typename T>
        struct graph_has_property<feSurfaceMesh, T>
                : public CGAL::graph_has_property<Poly_3, T>
        {};
}

typedef CGAL::Polyhedron_3<Kernel, feSurf_Elements>::Halfedge_handle    
HalfEdge_handle;
typedef CGAL::Polyhedron_3<Kernel, feSurf_Elements>::Facet_handle             
  
Facet_handle;
typedef CGAL::Polyhedron_3<Kernel, feSurf_Elements>::Vertex_handle      
SurfPt_handle;


int main(int argc, char* argv[])
{
        const char* filename = (argc > 1) ? argv[1] : 
"data/mech-holes-shark.off";
        std::ifstream input(filename);

        feSurfaceMesh feMesh;
        CGAL::read_off(input, feMesh);

        // Incrementally fill the holes
        unsigned int nb_holes = 0;
        for (HalfEdge_handle h : halfedges(feMesh))
        {
                if (h->is_border())
                {
                        std::vector<Facet_handle>  patch_facets;
                        std::vector<SurfPt_handle> patch_vertices;
                        bool success = std::get<0>(
                                
CGAL::Polygon_mesh_processing::triangulate_refine_and_fair_hole(
                                        feMesh,
                                        h,
                                        std::back_inserter(patch_facets),
                                        std::back_inserter(patch_vertices),
                                
CGAL::Polygon_mesh_processing::parameters::vertex_point_map(get(CGAL::vertex_point,
feMesh)).geom_traits(Kernel())));

                        std::cout << " Number of facets in constructed patch: 
" <<
patch_facets.size() << std::endl;
                        std::cout << " Number of vertices in constructed 
patch: " <<
patch_vertices.size() << std::endl;
                        std::cout << " Fairing : " << (success ? "succeeded" 
: "failed") <<
std::endl;
                        ++nb_holes;
                }
        }

        std::cout << std::endl;
        std::cout << nb_holes << " holes have been filled" << std::endl;

        std::ofstream out("filled.off");
        out.precision(17);
        out << feMesh << std::endl;
        return 0;
}





--
Sent from: http://cgal-discuss.949826.n4.nabble.com/