strategies/convex_hull/geographic.hpp

0001 // Boost.Geometry
0002
0003 // Copyright (c) 2020-2023, Oracle and/or its affiliates.
0004
0005 // Contributed and/or modified by Vissarion Fysikopoulos, on behalf of Oracle
0006 // Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
0007
0008 // Licensed under the Boost Software License version 1.0.
0009 // http://www.boost.org/users/license.html
0010
0011 #ifndef BOOST_GEOMETRY_STRATEGIES_CONVEX_HULL_GEOGRAPHIC_HPP
0012 #define BOOST_GEOMETRY_STRATEGIES_CONVEX_HULL_GEOGRAPHIC_HPP
0013
0014
0015 #include <boost/geometry/strategies/convex_hull/services.hpp>
0016 #include <boost/geometry/strategies/compare.hpp>
0017 #include <boost/geometry/strategies/detail.hpp>
0018 #include <boost/geometry/strategies/geographic/side.hpp>
0019 #include <boost/geometry/strategies/spherical/point_in_point.hpp>
0020
0021 #include <boost/geometry/util/type_traits.hpp>
0022
0023
0024 namespace boost { namespace geometry
0025 {
0026
0027 namespace strategies { namespace convex_hull
0028 {
0029
0030 template
0031 <
0032     typename FormulaPolicy = strategy::andoyer,
0033     typename Spheroid = srs::spheroid<double>,
0034     typename CalculationType = void
0035 >
0036 class geographic : public strategies::detail::geographic_base<Spheroid>
0037 {
0038     using base_t = strategies::detail::geographic_base<Spheroid>;
0039
0040 public:
0041     geographic() = default;
0042
0043     explicit geographic(Spheroid const& spheroid)
0044         : base_t(spheroid)
0045     {}
0046
0047     template <typename Geometry1, typename Geometry2>
0048     static auto relate(Geometry1 const&, Geometry2 const&,
0049                        std::enable_if_t
0050                             <
0051                                 util::is_pointlike<Geometry1>::value
0052                              && util::is_pointlike<Geometry2>::value
0053                             > * = nullptr)
0054     {
0055         return strategy::within::spherical_point_point();
0056     }
0057
0058     auto side() const
0059     {
0060         return strategy::side::geographic
0061             <
0062                 FormulaPolicy,
0063                 Spheroid,
0064                 CalculationType
0065             >(base_t::m_spheroid);
0066     }
0067
0068     template <typename ComparePolicy, typename EqualsPolicy>
0069     using compare_type = typename strategy::compare::spherical
0070         <
0071             ComparePolicy,
0072             EqualsPolicy,
0073             -1
0074         >;
0075 };
0076
0077 namespace services
0078 {
0079
0080 template <typename Geometry>
0081 struct default_strategy<Geometry, geographic_tag>
0082 {
0083     using type = strategies::convex_hull::geographic<>;
0084 };
0085
0086 } // namespace services
0087
0088 }} // namespace strategies::convex_hull
0089
0090 }} // namespace boost::geometry
0091
0092 #endif // BOOST_GEOMETRY_STRATEGIES_CONVEX_HULL_GEOGRAPHIC_HPP