mirror of https://github.com/CGAL/cgal
135 lines
4.6 KiB
C++
135 lines
4.6 KiB
C++
// 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)
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//
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// $URL$
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// $Id$
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// SPDX-License-Identifier: LGPL-3.0-or-later OR LicenseRef-Commercial
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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 <CGAL/Bbox_2.h>
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#include <variant>
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#include <optional>
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#include <vector>
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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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std::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 std::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 std::variant<typename K::Iso_rectangle_2> variant_type;
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typedef std::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 std::variant<typename K::Point_2> variant_type;
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typedef std::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 std::variant<typename K::Point_2> variant_type;
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typedef std::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::Point_2, typename K::Point_2> {
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typedef typename std::variant<typename K::Point_2> variant_type;
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typedef std::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 std::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 std::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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template<typename K, class B>
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struct Intersection_traits<K, CGAL::Bbox_2, B> {
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typedef typename Intersection_traits<K,typename K::Iso_rectangle_2, B>::result_type result_type;
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};
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template<typename K, class A>
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struct Intersection_traits<K, A, CGAL::Bbox_2> {
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typedef typename Intersection_traits<K,typename K::Iso_rectangle_2, A>::result_type result_type;
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};
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template<typename K>
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struct Intersection_traits<K, CGAL::Bbox_2, typename K::Point_2> {
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typedef typename std::variant<typename K::Point_2> variant_type;
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typedef std::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::Point_2, CGAL::Bbox_2> {
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typedef typename std::variant<typename K::Point_2> variant_type;
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typedef std::optional<variant_type> result_type;
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};
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} // namespace CGAL
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#endif /* CGAL_INTERSECTION_TRAITS_2_H */
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