1// Boost.Geometry (aka GGL, Generic Geometry Library)
2
3// Copyright (c) 2008-2012 Bruno Lalande, Paris, France.
4// Copyright (c) 2008-2012 Barend Gehrels, Amsterdam, the Netherlands.
5// Copyright (c) 2009-2012 Mateusz Loskot, London, UK.
6
7// Parts of Boost.Geometry are redesigned from Geodan's Geographic Library
8// (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands.
9
10// Use, modification and distribution is subject to the Boost Software License,
11// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
12// http://www.boost.org/LICENSE_1_0.txt)
13
14#ifndef BOOST_GEOMETRY_GEOMETRIES_ADAPTED_STD_PAIR_AS_SEGMENT_HPP
15#define BOOST_GEOMETRY_GEOMETRIES_ADAPTED_STD_PAIR_AS_SEGMENT_HPP
16
17// Only possible if the std::pair is not used for iterator/pair
18// (maybe it is possible to avoid that by detecting in the other file
19// if an iterator was used in the pair)
20
21#ifdef BOOST_GEOMETRY_ADAPTED_STD_RANGE_TAG_DEFINED
22#error Include only one headerfile to register tag for adapted std:: containers or iterator pair
23#endif
24
25#define BOOST_GEOMETRY_ADAPTED_STD_RANGE_TAG_DEFINED
26
27
28#include <cstddef>
29
30
31#include <boost/geometry/core/access.hpp>
32#include <boost/geometry/core/tag.hpp>
33#include <boost/geometry/core/tags.hpp>
34
35
36namespace boost { namespace geometry
37{
38
39
40#ifndef DOXYGEN_NO_TRAITS_SPECIALIZATIONS
41namespace traits
42{
43
44
45template <typename Point>
46struct tag<std::pair<Point, Point> >
47{
48 typedef segment_tag type;
49};
50
51template <typename Point>
52struct point_type<std::pair<Point, Point> >
53{
54 typedef Point type;
55};
56
57template <typename Point, std::size_t Dimension>
58struct indexed_access<std::pair<Point, Point>, 0, Dimension>
59{
60 typedef typename geometry::coordinate_type<Point>::type coordinate_type;
61
62 static inline coordinate_type get(std::pair<Point, Point> const& s)
63 {
64 return geometry::get<Dimension>(s.first);
65 }
66
67 static inline void set(std::pair<Point, Point>& s, coordinate_type const& value)
68 {
69 geometry::set<Dimension>(s.first, value);
70 }
71};
72
73
74template <typename Point, std::size_t Dimension>
75struct indexed_access<std::pair<Point, Point>, 1, Dimension>
76{
77 typedef typename geometry::coordinate_type<Point>::type coordinate_type;
78
79 static inline coordinate_type get(std::pair<Point, Point> const& s)
80 {
81 return geometry::get<Dimension>(s.second);
82 }
83
84 static inline void set(std::pair<Point, Point>& s, coordinate_type const& value)
85 {
86 geometry::set<Dimension>(s.second, value);
87 }
88};
89
90
91} // namespace traits
92#endif // DOXYGEN_NO_TRAITS_SPECIALIZATIONS
93
94
95}} // namespace boost::geometry
96
97
98#endif // BOOST_GEOMETRY_GEOMETRIES_ADAPTED_STD_PAIR_AS_SEGMENT_HPP
99

source code of boost/libs/geometry/include/boost/geometry/geometries/adapted/std_pair_as_segment.hpp