56 lines
1.4 KiB
C++
56 lines
1.4 KiB
C++
// 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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//
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// $URL: https://github.com/CGAL/cgal/blob/v5.1/TDS_2/include/CGAL/Triangulation_utils_2.h $
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// $Id: Triangulation_utils_2.h 0779373 2020-03-26T13:31:46+01:00 Sébastien Loriot
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// SPDX-License-Identifier: GPL-3.0-or-later OR LicenseRef-Commercial
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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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