ceph/src/boost/boost/geometry/algorithms/detail/intersects/interface.hpp

   1 // Boost.Geometry (aka GGL, Generic Geometry Library)
   2
   3 // Copyright (c) 2007-2014 Barend Gehrels, Amsterdam, the Netherlands.
   4 // Copyright (c) 2008-2014 Bruno Lalande, Paris, France.
   5 // Copyright (c) 2009-2014 Mateusz Loskot, London, UK.
   6
   7 // This file was modified by Oracle on 2013-2017.
   8 // Modifications copyright (c) 2013-2017, Oracle and/or its affiliates.
   9
  10 // Contributed and/or modified by Menelaos Karavelas, on behalf of Oracle
  11 // Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
  12
  13 // Parts of Boost.Geometry are redesigned from Geodan's Geographic Library
  14 // (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands.
  15
  16 // Use, modification and distribution is subject to the Boost Software License,
  17 // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
  18 // http://www.boost.org/LICENSE_1_0.txt)
  19
  20 #ifndef BOOST_GEOMETRY_ALGORITHMS_DETAIL_INTERSECTS_INTERFACE_HPP
  21 #define BOOST_GEOMETRY_ALGORITHMS_DETAIL_INTERSECTS_INTERFACE_HPP
  22
  23
  24 #include <boost/geometry/geometries/concepts/check.hpp>
  25
  26 #include <boost/geometry/algorithms/detail/disjoint/interface.hpp>
  27
  28
  29 namespace boost { namespace geometry
  30 {
  31
  32 #ifndef DOXYGEN_NO_DETAIL
  33 namespace detail { namespace intersects
  34 {
  35
  36 // Forward declaration
  37 template <typename Geometry>
  38 struct self_intersects;
  39
  40 }} // namespace detail::intersects
  41 #endif // DOXYGEN_NO_DETAIL
  42
  43
  44 /*!
  45 \brief \brief_check{has at least one intersection (crossing or self-tangency)}
  46 \note This function can be called for one geometry (self-intersection) and
  47     also for two geometries (intersection)
  48 \ingroup intersects
  49 \tparam Geometry \tparam_geometry
  50 \param geometry \param_geometry
  51 \return \return_check{is self-intersecting}
  52
  53 \qbk{distinguish,one geometry}
  54 \qbk{[def __one_parameter__]}
  55 \qbk{[include reference/algorithms/intersects.qbk]}
  56 */
  57 template <typename Geometry>
  58 inline bool intersects(Geometry const& geometry)
  59 {
  60     return detail::intersects::self_intersects<Geometry>::apply(geometry);
  61 }
  62
  63
  64 /*!
  65 \brief \brief_check2{have at least one intersection}
  66 \ingroup intersects
  67 \tparam Geometry1 \tparam_geometry
  68 \tparam Geometry2 \tparam_geometry
  69 \tparam Strategy \tparam_strategy{Intersects}
  70 \param geometry1 \param_geometry
  71 \param geometry2 \param_geometry
  72 \param strategy \param_strategy{intersects}
  73 \return \return_check2{intersect each other}
  74
  75 \qbk{distinguish,with strategy}
  76 \qbk{[include reference/algorithms/intersects.qbk]}
  77  */
  78 template <typename Geometry1, typename Geometry2, typename Strategy>
  79 inline bool intersects(Geometry1 const& geometry1,
  80                        Geometry2 const& geometry2,
  81                        Strategy const& strategy)
  82 {
  83     concepts::check<Geometry1 const>();
  84     concepts::check<Geometry2 const>();
  85
  86     return ! geometry::disjoint(geometry1, geometry2, strategy);
  87 }
  88
  89
  90 /*!
  91 \brief \brief_check2{have at least one intersection}
  92 \ingroup intersects
  93 \tparam Geometry1 \tparam_geometry
  94 \tparam Geometry2 \tparam_geometry
  95 \param geometry1 \param_geometry
  96 \param geometry2 \param_geometry
  97 \return \return_check2{intersect each other}
  98
  99 \qbk{distinguish,two geometries}
 100 \qbk{[include reference/algorithms/intersects.qbk]}
 101  */
 102 template <typename Geometry1, typename Geometry2>
 103 inline bool intersects(Geometry1 const& geometry1, Geometry2 const& geometry2)
 104 {
 105     concepts::check<Geometry1 const>();
 106     concepts::check<Geometry2 const>();
 107
 108     return ! geometry::disjoint(geometry1, geometry2);
 109 }
 110
 111
 112
 113 }} // namespace boost::geometry
 114
 115 #endif // BOOST_GEOMETRY_ALGORITHMS_DETAIL_INTERSECTS_INTERFACE_HPP