65 lines
1.7 KiB
C
65 lines
1.7 KiB
C
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// Copyright (c) 1997 INRIA Sophia-Antipolis (France).
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// All rights reserved.
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//
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// This file is part of CGAL (www.cgal.org).
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// You can redistribute it and/or modify it under the terms of the GNU
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// General Public License as published by the Free Software Foundation,
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// either version 3 of the License, or (at your option) any later version.
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//
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// Licensees holding a valid commercial license may use this file in
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// accordance with the commercial license agreement provided with the software.
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//
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// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
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// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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//
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// $URL$
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// $Id$
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// SPDX-License-Identifier: GPL-3.0+
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//
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//
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// Author(s) : Mariette Yvinec <Mariette.Yvinec@sophia.inria.fr>
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// Sylvain Pion
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// Andreas Fabri <Andreas.Fabri@geometryfactory.com>
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#ifndef CGAL_TRIANGULATION_UTILS_2_H
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#define CGAL_TRIANGULATION_UTILS_2_H
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#include <CGAL/license/TDS_2.h>
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#include <CGAL/triangulation_assertions.h>
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namespace CGAL {
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template < class T = void >
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struct Triangulation_cw_ccw_static_2 {
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static const int ccw_map[3];
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static const int cw_map[3];
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};
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template < class T >
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const int Triangulation_cw_ccw_static_2<T>::ccw_map[3] = {1, 2, 0};
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template < class T >
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const int Triangulation_cw_ccw_static_2<T>::cw_map[3] = {2, 0, 1};
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class Triangulation_cw_ccw_2
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: public Triangulation_cw_ccw_static_2<>
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{
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public:
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static int ccw(const int i)
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{
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CGAL_triangulation_precondition( i >= 0 && i < 3);
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return ccw_map[i];
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}
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static int cw(const int i)
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{
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CGAL_triangulation_precondition( i >= 0 && i < 3);
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return cw_map[i];
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}
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};
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} //namespace CGAL
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#endif //CGAL_TRIANGULATION_UTILS_2_H
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