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[Adam Getchell <>]

Hello all,

I have a function on a Delaunay triangulation which checks the validity of my cells. I want to call TriangulationDataStructure_3::delete_cell(). How do I do that? 

First, I tried just doing Tds::delete_cell(cit);

But that gives a “call to non-static member function without an object argument”.

Next, I tried calling the superclass method from the subclass:

typedef CGAL::Exact_predicates_inexact_constructions_kernel K;

/// Used so that each timeslice is assigned an integer

typedef CGAL::Triangulation_3<K>  Triangulation;

typedef CGAL::Triangulation_vertex_base_with_info_3<unsigned, K> Vb;

typedef CGAL::Triangulation_data_structure_3<Vb> Tds;

typedef CGAL::Delaunay_triangulation_3<K, Tds> Delaunay;

typedef Delaunay::Vertex_handle Vertex_handle;

typedef Delaunay::Locate_type Locate_type;

typedef Delaunay::Point Point;

inline bool check_timeslices(Delaunay* D3) {

  Delaunay::Finite_cells_iterator cit;

  for(cit = D3->finite_cells_begin();  cit != D3->finite_cells_end(); ++cit)

  {

    /// Get the vertices from the cell

    //Delaunay::Facet& face = *(cit->first);

    // Vertex_handle vs = cit->source();

    if (cit->is_valid())

      {

        std::cout << "Cell is valid." << std::endl;

      }

    else

      {

        D3->Tds::delete_cell(cit);

        std::cout << "Invalid cell destroyed." << std::endl;

      }

  }

  assert(D3->is_valid());

  return true;

}

It looks like delete_cell is a private function not callable from subclasses. I get:

[ 12%] Building CXX object CMakeFiles/cdt.dir/src/cdt.cpp.o

In file included from /Users/adam/CDT-plusplus/src/cdt.cpp:22:

/Users/adam/CDT-plusplus/src/S3Triangulation.h:59:13: error: 'Tds' is a private

      member of 'CGAL::Triangulation_3<CGAL::Epick,

      CGAL::Triangulation_data_structure_3<CGAL::Triangulation_vertex_base_with_info_3<unsigned

      int, CGAL::Epick, CGAL::Triangulation_vertex_base_3<CGAL::Epick,

      CGAL::Triangulation_ds_vertex_base_3<void> > >,

      CGAL::Triangulation_ds_cell_base_3<void>, CGAL::Sequential_tag>,

      CGAL::Default>'

        D3->Tds::delete_cell(cit);

            ^

/usr/local/include/CGAL/Triangulation_3.h:375:83: note: implicitly declared

      private here

  ...Triangulation_cell_base_3<GT> > >::type Tds;

                                             ^

In file included from /Users/adam/CDT-plusplus/src/cdt.cpp:22:

/Users/adam/CDT-plusplus/src/S3Triangulation.h:59:18: error: 

      'CGAL::Triangulation_data_structure_3<CGAL::Triangulation_vertex_base_with_info_3<unsigned

      int, CGAL::Epick, CGAL::Triangulation_vertex_base_3<CGAL::Epick,

      CGAL::Triangulation_ds_vertex_base_3<void> > >,

      CGAL::Triangulation_ds_cell_base_3<void>,

      CGAL::Sequential_tag>::delete_cell' is not a member of class 'Delaunay'

      (aka 'Delaunay_triangulation_3<K, Tds>')

        D3->Tds::delete_cell(cit);

Adam Getchell
about.me/adamgetchell