// Copyright (c) 1999-2016 INRIA Sophia Antipolis, INRIA Nancy - Grand Est (France).
// All rights reserved.
//
// This file is part of CGAL (www.cgal.org).
//
// $URL: https://github.com/CGAL/cgal/blob/v6.1/Periodic_4_hyperbolic_triangulation_2/include/CGAL/Periodic_4_hyperbolic_triangulation_vertex_base_2.h $
// $Id: include/CGAL/Periodic_4_hyperbolic_triangulation_vertex_base_2.h b26b07a1242 $
// SPDX-License-Identifier: GPL-3.0-or-later OR LicenseRef-Commercial
//
// Author(s)     : Iordan Iordanov  <Iordan.Iordanov@loria.fr>
//

#ifndef CGAL_PERIODIC_4_HYPERBOLIC_TRIANGULATION_VERTEX_BASE_2_H
#define CGAL_PERIODIC_4_HYPERBOLIC_TRIANGULATION_VERTEX_BASE_2_H

#include <CGAL/license/Periodic_4_hyperbolic_triangulation_2.h>

#include <CGAL/basic.h>
#include <CGAL/Triangulation_vertex_base_2.h>

namespace CGAL {

template <typename GT,
          typename Vb = CGAL::Triangulation_vertex_base_2<GT> >
class Periodic_4_hyperbolic_triangulation_vertex_base_2
  : public Vb
{
public:
  typedef Vb                                                        Base;
  typedef typename Vb::Triangulation_data_structure                 Triangulation_data_structure;
  typedef typename Triangulation_data_structure::Face_handle        Face_handle;
  typedef typename GT::Point_2                                      Point;
  typedef typename GT::Hyperbolic_translation                       Hyperbolic_translation;

  template <typename TDS2>
  struct Rebind_TDS {
    typedef typename Vb::template Rebind_TDS<TDS2>::Other                Vb2;
    typedef Periodic_4_hyperbolic_triangulation_vertex_base_2<GT, Vb2>   Other;
  };

private:
  Hyperbolic_translation _tr; // Used only during insert();
  bool _stored_translation;

public:
  Periodic_4_hyperbolic_triangulation_vertex_base_2()
    : Base(), _stored_translation(false)
  {}

  Periodic_4_hyperbolic_triangulation_vertex_base_2(const Point& p)
    : Base(p), _stored_translation(false)
  {}

  Periodic_4_hyperbolic_triangulation_vertex_base_2(const Point& p, const Face_handle fh)
    : Base(p, fh), _stored_translation(false)
  {}


  void set_translation(const Hyperbolic_translation& tr)
  {
    if(!_stored_translation)
    {
      _tr = tr;
      _stored_translation = true;
    }
  }

  Hyperbolic_translation translation() const
  {
    return _tr;
  }

  void clear_translation()
  {
    _tr = Hyperbolic_translation();
    _stored_translation = false;
  }

  bool get_translation_flag() const
  {
    return _stored_translation;
  }
};

template <typename TDS>
inline
std::istream&
operator>>(std::istream &is, Periodic_4_hyperbolic_triangulation_vertex_base_2<TDS> &)
{
  return is;
}

template <typename TDS>
inline
std::ostream&
operator<<(std::ostream &os, Periodic_4_hyperbolic_triangulation_vertex_base_2<TDS> &)
{
  return os;
}

}  // namespace CGAL

#endif // CGAL_PERIODIC_4_HYPERBOLIC_TRIANGULATION_VERTEX_BASE_2_H

