strategies/centroid/geographic.hpp

0001 // Boost.Geometry
0002
0003 // Copyright (c) 2025 Adam Wulkiewicz, Lodz, Poland.
0004
0005 // Copyright (c) 2021, Oracle and/or its affiliates.
0006
0007 // Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
0008
0009 // Licensed under the Boost Software License version 1.0.
0010 // http://www.boost.org/users/license.html
0011
0012 #ifndef BOOST_GEOMETRY_STRATEGIES_CENTROID_GEOGRAPHIC_HPP
0013 #define BOOST_GEOMETRY_STRATEGIES_CENTROID_GEOGRAPHIC_HPP
0014
0015
0016 #include <boost/geometry/strategies/detail.hpp>
0017 #include <boost/geometry/strategies/centroid.hpp>
0018 #include <boost/geometry/strategies/centroid/services.hpp>
0019
0020
0021 namespace boost { namespace geometry
0022 {
0023
0024 namespace strategies { namespace centroid
0025 {
0026
0027 #ifndef DOXYGEN_NO_DETAIL
0028 namespace detail
0029 {
0030
0031 class geographic
0032 {
0033 public:
0034     // TODO: Box and Segment should have proper strategies.
0035     template <typename Geometry, typename Point>
0036     static auto centroid(Geometry const&, Point const&,
0037                          std::enable_if_t
0038                             <
0039                                 util::is_segment<Geometry>::value
0040                              || util::is_box<Geometry>::value
0041                             > * = nullptr)
0042     {
0043         return strategy::centroid::not_applicable_strategy();
0044     }
0045 };
0046
0047
0048 } // namespace detail
0049 #endif // DOXYGEN_NO_DETAIL
0050
0051
0052 template
0053 <
0054     typename FormulaPolicy = strategy::andoyer,
0055     typename Spheroid = srs::spheroid<double>,
0056     typename CalculationType = void
0057 >
0058 class geographic
0059     : public strategies::detail::geographic_base<Spheroid>
0060     , public strategies::centroid::detail::geographic
0061 {
0062     using base_t = strategies::detail::geographic_base<Spheroid>;
0063
0064 public:
0065     geographic() = default;
0066
0067     explicit geographic(Spheroid const& spheroid)
0068         : base_t(spheroid)
0069     {}
0070 };
0071
0072
0073 namespace services
0074 {
0075
0076 template <typename Geometry>
0077 struct default_strategy<Geometry, geographic_tag>
0078 {
0079     using type = strategies::centroid::geographic<>;
0080 };
0081
0082 } // namespace services
0083
0084 }} // namespace strategies::centroid
0085
0086 }} // namespace boost::geometry
0087
0088 #endif // BOOST_GEOMETRY_STRATEGIES_CENTROID_GEOGRAPHIC_HPP