ceph/src/boost/libs/geometry/include/boost/geometry/geometries/adapted/std_pair_as_segment.hpp

   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
  36 namespace boost { namespace geometry
  37 {
  38
  39
  40 #ifndef DOXYGEN_NO_TRAITS_SPECIALIZATIONS
  41 namespace traits
  42 {
  43
  44
  45 template <typename Point>
  46 struct tag<std::pair<Point, Point> >
  47 {
  48     typedef segment_tag type;
  49 };
  50
  51 template <typename Point>
  52 struct point_type<std::pair<Point, Point> >
  53 {
  54     typedef Point type;
  55 };
  56
  57 template <typename Point, std::size_t Dimension>
  58 struct 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
  74 template <typename Point, std::size_t Dimension>
  75 struct 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