120 lines
4.1 KiB
C
120 lines
4.1 KiB
C
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// Copyright (c) 2011 GeometryFactory (France). All rights reserved.
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// All rights reserved.
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//
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// This file is part of CGAL (www.cgal.org); you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public License as
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// published by the Free Software Foundation; either version 3 of the License,
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// 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: LGPL-3.0+
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//
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//
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// Author(s) : Philipp Möller
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#ifndef CGAL_INTERSECTION_TRAITS_2_H
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#define CGAL_INTERSECTION_TRAITS_2_H
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#include <CGAL/Intersection_traits.h>
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#include <boost/variant.hpp>
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#include <boost/optional.hpp>
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#include <vector>
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#if !(CGAL_INTERSECTION_VERSION < 2)
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namespace CGAL {
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CGAL_INTERSECTION_TRAITS_2(Line_2, Line_2, Point_2, Line_2)
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CGAL_INTERSECTION_TRAITS_2(Segment_2, Line_2, Point_2, Segment_2)
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CGAL_INTERSECTION_TRAITS_2(Line_2, Segment_2, Point_2, Segment_2)
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CGAL_INTERSECTION_TRAITS_2(Segment_2, Segment_2, Point_2, Segment_2)
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CGAL_INTERSECTION_TRAITS_2(Ray_2, Line_2, Point_2, Ray_2)
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CGAL_INTERSECTION_TRAITS_2(Line_2, Ray_2, Point_2, Ray_2)
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CGAL_INTERSECTION_TRAITS_2(Ray_2, Segment_2, Point_2, Segment_2)
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CGAL_INTERSECTION_TRAITS_2(Segment_2, Ray_2, Point_2, Segment_2)
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CGAL_INTERSECTION_TRAITS_3(Ray_2, Ray_2, Point_2, Segment_2, Ray_2)
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CGAL_INTERSECTION_TRAITS_2(Triangle_2, Line_2, Point_2, Segment_2)
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CGAL_INTERSECTION_TRAITS_2(Line_2, Triangle_2, Point_2, Segment_2)
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CGAL_INTERSECTION_TRAITS_2(Triangle_2, Segment_2, Point_2, Segment_2)
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CGAL_INTERSECTION_TRAITS_2(Segment_2, Triangle_2, Point_2, Segment_2)
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CGAL_INTERSECTION_TRAITS_2(Triangle_2, Ray_2, Point_2, Segment_2)
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CGAL_INTERSECTION_TRAITS_2(Ray_2, Triangle_2, Point_2, Segment_2)
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template<typename K>
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struct Intersection_traits<K, typename K::Triangle_2, typename K::Triangle_2> {
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typedef typename
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boost::variant< typename K::Point_2, typename K::Segment_2,
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typename K::Triangle_2, typename std::vector< typename K::Point_2 > > variant_type;
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typedef typename boost::optional< variant_type > result_type;
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};
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CGAL_INTERSECTION_TRAITS_2(Iso_rectangle_2, Line_2, Point_2, Segment_2)
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CGAL_INTERSECTION_TRAITS_2(Line_2, Iso_rectangle_2, Point_2, Segment_2)
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CGAL_INTERSECTION_TRAITS_2(Iso_rectangle_2, Segment_2, Point_2, Segment_2)
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CGAL_INTERSECTION_TRAITS_2(Segment_2, Iso_rectangle_2, Point_2, Segment_2)
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CGAL_INTERSECTION_TRAITS_2(Iso_rectangle_2, Ray_2, Point_2, Segment_2)
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CGAL_INTERSECTION_TRAITS_2(Ray_2, Iso_rectangle_2, Point_2, Segment_2)
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// undocumented
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// Variants of one for backwards compatibility
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template<typename K>
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struct Intersection_traits<K, typename K::Iso_rectangle_2, typename K::Iso_rectangle_2> {
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typedef typename boost::variant<typename K::Iso_rectangle_2> variant_type;
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typedef boost::optional<variant_type> result_type;
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};
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// Point_2 is special
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template<typename K, typename B>
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struct Intersection_traits<K, typename K::Point_2, B> {
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typedef typename boost::variant<typename K::Point_2> variant_type;
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typedef boost::optional<variant_type> result_type;
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};
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template<typename K, typename A>
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struct Intersection_traits<K, A, typename K::Point_2> {
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typedef typename boost::variant<typename K::Point_2> variant_type;
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typedef boost::optional<variant_type> result_type;
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};
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template<typename K>
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struct Intersection_traits<K, typename K::Iso_rectangle_2, typename K::Triangle_2>
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{
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typedef typename boost::variant<typename K::Segment_2, typename K::Triangle_2,
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typename K::Point_2,
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typename std::vector< typename K::Point_2 > > variant_type;
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typedef typename boost::optional < variant_type > result_type;
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};
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template<typename K>
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struct Intersection_traits<K, typename K::Triangle_2, typename K::Iso_rectangle_2>
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: public Intersection_traits<K, typename K::Iso_rectangle_2, typename K::Triangle_2> {};
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} // namespace CGAL
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#endif
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#endif /* CGAL_INTERSECTION_TRAITS_2_H */
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