ceph/src/boost/boost/geometry/strategy/geographic/envelope_segment.hpp

   1 // Boost.Geometry (aka GGL, Generic Geometry Library)
   2
   3 // Copyright (c) 2017-2020 Oracle and/or its affiliates.
   4 // Contributed and/or modified by Vissarion Fisikopoulos, on behalf of Oracle
   5 // Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
   6
   7 // Use, modification and distribution is subject to the Boost Software License,
   8 // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
   9 // http://www.boost.org/LICENSE_1_0.txt)
  10
  11 #ifndef BOOST_GEOMETRY_STRATEGY_GEOGRAPHIC_ENVELOPE_SEGMENT_HPP
  12 #define BOOST_GEOMETRY_STRATEGY_GEOGRAPHIC_ENVELOPE_SEGMENT_HPP
  13
  14
  15 #include <boost/geometry/srs/spheroid.hpp>
  16
  17 #include <boost/geometry/strategy/cartesian/envelope_segment.hpp>
  18 #include <boost/geometry/strategy/envelope.hpp>
  19 #include <boost/geometry/strategies/geographic/azimuth.hpp>
  20 #include <boost/geometry/strategies/geographic/parameters.hpp>
  21 #include <boost/geometry/strategies/normalize.hpp>
  22 #include <boost/geometry/strategy/spherical/envelope_segment.hpp>
  23 #include <boost/geometry/strategy/spherical/expand_box.hpp>
  24
  25 namespace boost { namespace geometry
  26 {
  27
  28 namespace strategy { namespace envelope
  29 {
  30
  31 template
  32 <
  33     typename FormulaPolicy = strategy::andoyer,
  34     typename Spheroid = geometry::srs::spheroid<double>,
  35     typename CalculationType = void
  36 >
  37 class geographic_segment
  38 {
  39 public:
  40     typedef Spheroid model_type;
  41
  42     inline geographic_segment()
  43         : m_spheroid()
  44     {}
  45
  46     explicit inline geographic_segment(Spheroid const& spheroid)
  47         : m_spheroid(spheroid)
  48     {}
  49
  50     template <typename Point, typename Box>
  51     inline void apply(Point const& point1, Point const& point2, Box& box) const
  52     {
  53         Point p1_normalized, p2_normalized;
  54         strategy::normalize::spherical_point::apply(point1, p1_normalized);
  55         strategy::normalize::spherical_point::apply(point2, p2_normalized);
  56
  57         geometry::strategy::azimuth::geographic
  58             <
  59                 FormulaPolicy,
  60                 Spheroid,
  61                 CalculationType
  62             > azimuth_geographic(m_spheroid);
  63
  64         typedef typename geometry::detail::cs_angular_units
  65             <
  66                 Point
  67             >::type units_type;
  68
  69         // first compute the envelope range for the first two coordinates
  70         strategy::envelope::detail::envelope_segment_impl
  71             <
  72                 geographic_tag
  73             >::template apply<units_type>(geometry::get<0>(p1_normalized),
  74                                           geometry::get<1>(p1_normalized),
  75                                           geometry::get<0>(p2_normalized),
  76                                           geometry::get<1>(p2_normalized),
  77                                           box,
  78                                           azimuth_geographic);
  79
  80         // now compute the envelope range for coordinates of
  81         // dimension 2 and higher
  82         strategy::envelope::detail::envelope_one_segment
  83             <
  84                 2, dimension<Point>::value
  85             >::apply(point1, point2, box);
  86     }
  87
  88     Spheroid model() const
  89     {
  90         return m_spheroid;
  91     }
  92
  93 private:
  94     Spheroid m_spheroid;
  95 };
  96
  97 #ifndef DOXYGEN_NO_STRATEGY_SPECIALIZATIONS
  98
  99 namespace services
 100 {
 101
 102 template <typename CalculationType>
 103 struct default_strategy<segment_tag, geographic_tag, CalculationType>
 104 {
 105     typedef strategy::envelope::geographic_segment
 106         <
 107             strategy::andoyer,
 108             srs::spheroid<double>,
 109             CalculationType
 110         > type;
 111 };
 112
 113 }
 114
 115 #endif // DOXYGEN_NO_STRATEGY_SPECIALIZATIONS
 116
 117
 118 }} // namespace strategy::envelope
 119
 120 }} //namepsace boost::geometry
 121
 122 #endif // BOOST_GEOMETRY_STRATEGY_GEOGRAPHIC_ENVELOPE_SEGMENT_HPP