128 lines
3.0 KiB
C++
Executable File
128 lines
3.0 KiB
C++
Executable File
// Copyright (c) 2005 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) : Laurent RINEAU
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#ifndef CGAL_POINT_TRAITS_H
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#define CGAL_POINT_TRAITS_H
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#include <CGAL/license/Surface_mesher.h>
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#include <CGAL/Weighted_point_3.h>
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#include <CGAL/assertions.h>
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namespace CGAL {
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template <class P>
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struct Is_weighted : public Tag_false {} ;
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template <typename K>
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struct Is_weighted< ::CGAL::Weighted_point_3<K> > :
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public Tag_true {} ;
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namespace details {
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template <class P, typename FT, bool>
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struct Point_traits_aux
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{
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// should give errors
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};
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template <class P, typename FT>
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struct Point_traits_aux<P, FT, false>
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{
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typedef P Point;
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typedef P Bare_point;
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typedef typename Kernel_traits<P>::type K;
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typedef typename ::CGAL::Weighted_point_3<K> Weighted_point;
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typedef Tag_false Is_weighted;
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const Bare_point& bare_point(const Point& bp)
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{
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return bp;
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}
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Weighted_point weighted_point(const Point& bp)
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{
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return Weighted_point(bp);
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}
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const Point& point(const Bare_point& bp)
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{
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return bp;
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}
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const Point& point(const Weighted_point& wp)
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{
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return wp.point();
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}
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}; // end class Point_traits_aux<P>
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template <class P, typename FT>
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struct Point_traits_aux<P, FT, true>
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{
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typedef P Point;
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typedef P Weighted_point;
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typedef typename Point::Point Bare_point;
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typedef Tag_true Is_weighted;
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const Bare_point& bare_point(const Point& wp)
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{
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return wp.point();
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}
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const Weighted_point& weighted_point(const Point& wp)
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{
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return wp;
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}
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Point point(const Bare_point& bp)
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{
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return Weighted_point(bp);
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}
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const Point& point(const Weighted_point& wp)
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{
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return wp;
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}
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}; // end class Point_traits_aux<P, FT, true>
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template <class Point>
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struct FT_of_point
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{
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typedef typename CGAL::Kernel_traits<Point>::Kernel::FT type;
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};
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} // end namespace details
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template <class Point>
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class Point_traits
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: public details::Point_traits_aux<
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Point,
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typename details::FT_of_point<Point>::type,
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Is_weighted<Point>::value
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>
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{
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}; // end class Point_traits<T>
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} // end namespace CGAL
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#endif // CGAL_POINT_TRAITS_H
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