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// Copyright (c) 1997 INRIA Sophia-Antipolis (France).
// All rights reserved.
//
// This file is part of CGAL (www.cgal.org).
// You can redistribute it and/or modify it under the terms of the GNU
// General Public License as published by the Free Software Foundation,
// either version 3 of the License, or (at your option) any later version.
//
// Licensees holding a valid commercial license may use this file in
// accordance with the commercial license agreement provided with the software.
//
// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
//
// $URL: svn+ssh://scm.gforge.inria.fr/svn/cgal/branches/next/Triangulation_2/include/CGAL/Triangulation_face_base_2.h $
// $Id: Triangulation_face_base_2.h 67117 2012-01-13 18:14:48Z lrineau $
//
//
// Author(s) : Mariette Yvinec
#ifndef CGAL_TRIANGULATION_FACE_BASE_2_H
#define CGAL_TRIANGULATION_FACE_BASE_2_H
#include <CGAL/basic.h>
#include <CGAL/triangulation_assertions.h>
#include <CGAL/Triangulation_ds_face_base_2.h>
namespace CGAL {
template < typename Gt, typename Fb = Triangulation_ds_face_base_2<> >
class Triangulation_face_base_2
: public Fb
{
public:
typedef Gt Geom_traits;
typedef typename Fb::Vertex_handle Vertex_handle;
typedef typename Fb::Face_handle Face_handle;
template < typename TDS2 >
struct Rebind_TDS {
typedef typename Fb::template Rebind_TDS<TDS2>::Other Fb2;
typedef Triangulation_face_base_2<Gt, Fb2> Other;
};
public:
Triangulation_face_base_2()
: Fb() {}
Triangulation_face_base_2(Vertex_handle v0,
Vertex_handle v1,
Vertex_handle v2)
: Fb(v0,v1,v2) {}
Triangulation_face_base_2(Vertex_handle v0,
Vertex_handle v1,
Vertex_handle v2,
Face_handle n0,
Face_handle n1,
Face_handle n2)
: Fb(v0,v1,v2,n0,n1,n2) {}
static int ccw(int i) {return Triangulation_cw_ccw_2::ccw(i);}
static int cw(int i) {return Triangulation_cw_ccw_2::cw(i);}
#ifndef CGAL_NO_DEPRECATED_CODE
Vertex_handle mirror_vertex(int i) const;
int mirror_index(int i) const;
#endif
};
#ifndef CGAL_NO_DEPRECATED_CODE
template < class Gt, class Fb >
inline
typename Triangulation_face_base_2<Gt,Fb>::Vertex_handle
Triangulation_face_base_2<Gt,Fb>::
mirror_vertex(int i) const
{
CGAL_triangulation_precondition ( this->neighbor(i) != Face_handle()
&& this->dimension() >= 1);
//return neighbor(i)->vertex(neighbor(i)->index(this->handle()));
return this->neighbor(i)->vertex(mirror_index(i));
}
template < class Gt, class Fb >
inline int
Triangulation_face_base_2<Gt,Fb>::
mirror_index(int i) const
{
// return the index of opposite vertex in neighbor(i);
CGAL_triangulation_precondition (this->neighbor(i) != Face_handle() &&
this->dimension() >= 1);
if (this->dimension() == 1) {
return 1 - (this->neighbor(i)->index(this->vertex(1-i)));
}
return this->ccw( this->neighbor(i)->index(this->vertex(this->ccw(i))));
}
#endif
} //namespace CGAL
#endif //CGAL_TRIANGULATION_FACE_BASE_2_H
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