ceph/src/boost/boost/geometry/strategies/expand/geographic.hpp

   1 // Boost.Geometry
   2
   3 // Copyright (c) 2020-2021, Oracle and/or its affiliates.
   4
   5 // Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
   6
   7 // Licensed under the Boost Software License version 1.0.
   8 // http://www.boost.org/users/license.html
   9
  10 #ifndef BOOST_GEOMETRY_STRATEGIES_EXPAND_GEOGRAPHIC_HPP
  11 #define BOOST_GEOMETRY_STRATEGIES_EXPAND_GEOGRAPHIC_HPP
  12
  13
  14 #include <type_traits>
  15
  16 #include <boost/geometry/strategy/geographic/expand_segment.hpp>
  17
  18 #include <boost/geometry/strategies/detail.hpp>
  19 #include <boost/geometry/strategies/expand/spherical.hpp>
  20
  21
  22 namespace boost { namespace geometry
  23 {
  24
  25 namespace strategies { namespace expand
  26 {
  27
  28 template
  29 <
  30     typename FormulaPolicy = strategy::andoyer,
  31     typename Spheroid = srs::spheroid<double>,
  32     typename CalculationType = void
  33 >
  34 class geographic
  35     : public strategies::detail::geographic_base<Spheroid>
  36 {
  37     using base_t = strategies::detail::geographic_base<Spheroid>;
  38
  39 public:
  40     geographic() = default;
  41
  42     explicit geographic(Spheroid const& spheroid)
  43         : base_t(spheroid)
  44     {}
  45
  46     template <typename Box, typename Geometry>
  47     static auto expand(Box const&, Geometry const&,
  48                        typename util::enable_if_point_t<Geometry> * = nullptr)
  49     {
  50         return strategy::expand::spherical_point();
  51     }
  52
  53     template <typename Box, typename Geometry>
  54     static auto expand(Box const&, Geometry const&,
  55                        typename util::enable_if_box_t<Geometry> * = nullptr)
  56     {
  57         return strategy::expand::spherical_box();
  58     }
  59
  60     template <typename Box, typename Geometry>
  61     auto expand(Box const&, Geometry const&,
  62                 typename util::enable_if_segment_t<Geometry> * = nullptr) const
  63     {
  64         return strategy::expand::geographic_segment
  65             <
  66                 FormulaPolicy, Spheroid, CalculationType
  67             >(base_t::m_spheroid);
  68     }
  69 };
  70
  71
  72 namespace services
  73 {
  74
  75 template <typename Box, typename Geometry>
  76 struct default_strategy<Box, Geometry, geographic_tag>
  77 {
  78     using type = strategies::expand::geographic<>;
  79 };
  80
  81
  82 template <typename FP, typename S, typename CT>
  83 struct strategy_converter<strategy::expand::geographic_segment<FP, S, CT> >
  84 {
  85     static auto get(strategy::expand::geographic_segment<FP, S, CT> const& s)
  86     {
  87         return strategies::expand::geographic<FP, S, CT>(s.model());
  88     }
  89 };
  90
  91
  92 } // namespace services
  93
  94 }} // namespace strategies::envelope
  95
  96 }} // namespace boost::geometry
  97
  98 #endif // BOOST_GEOMETRY_STRATEGIES_EXPAND_GEOGRAPHIC_HPP