CGAL users discussion list

["Damiand" <>]

Hi Jeremy,

This is not a bug: the attribute can have a constructor with many arguments.

In your example the attribute has only the default constructor with 1
argument, and the Info of the attribute has a constructor with 2 arguments.

Here the correct item class to do what you want:

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
struct Myitem
{
  template<class CMap>
  struct Dart_wrapper
  {
    struct Info
    {
        Info(int a_, int b_) : a(a_), b(b_) {}
        int a, b;
    };
    struct Facet_attribute: public
CGAL::Cell_attribute<CMap,Info,CGAL::Tag_true,
     Sum_functor, Divide_by_two_functor>
    {
      Facet_attribute(int a_, int b_):
CGAL::Cell_attribute<CMap,Info,CGAL::Tag_true,

Sum_functor,Divide_by_two_functor>(Info(a_,b_))
      {}
    };

    typedef CGAL::Dart<3, CMap> Dart;
    typedef CGAL::cpp11::tuple<void,void,Facet_attribute> Attributes;
  };
};
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

Thank you for your feedbaks on combinatorial maps.

Guillaume