ceph/src/boost/boost/geometry/strategy/spherical/expand_segment.hpp

   1 // Boost.Geometry (aka GGL, Generic Geometry Library)
   2
   3 // Copyright (c) 2007-2015 Barend Gehrels, Amsterdam, the Netherlands.
   4 // Copyright (c) 2008-2015 Bruno Lalande, Paris, France.
   5 // Copyright (c) 2009-2015 Mateusz Loskot, London, UK.
   6 // Copyright (c) 2014-2015 Samuel Debionne, Grenoble, France.
   7
   8 // This file was modified by Oracle on 2015-2020.
   9 // Modifications copyright (c) 2015-2020, Oracle and/or its affiliates.
  10
  11 // Contributed and/or modified by Vissarion Fysikopoulos, on behalf of Oracle
  12 // Contributed and/or modified by Menelaos Karavelas, on behalf of Oracle
  13 // Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
  14
  15 // Distributed under the Boost Software License, Version 1.0.
  16 // (See accompanying file LICENSE_1_0.txt or copy at
  17 // http://www.boost.org/LICENSE_1_0.txt)
  18
  19 #ifndef BOOST_GEOMETRY_STRATEGY_SPHERICAL_EXPAND_SEGMENT_HPP
  20 #define BOOST_GEOMETRY_STRATEGY_SPHERICAL_EXPAND_SEGMENT_HPP
  21
  22 #include <cstddef>
  23 #include <functional>
  24
  25 #include <boost/geometry/core/access.hpp>
  26 #include <boost/geometry/core/tags.hpp>
  27
  28 #include <boost/geometry/util/select_coordinate_type.hpp>
  29
  30 #include <boost/geometry/algorithms/detail/envelope/box.hpp>
  31 #include <boost/geometry/algorithms/detail/envelope/range_of_boxes.hpp>
  32 #include <boost/geometry/algorithms/detail/envelope/segment.hpp>
  33
  34 #include <boost/geometry/strategy/expand.hpp>
  35 #include <boost/geometry/strategy/spherical/envelope_box.hpp>
  36 #include <boost/geometry/strategy/spherical/envelope_segment.hpp>
  37
  38
  39 namespace boost { namespace geometry
  40 {
  41
  42 namespace strategy { namespace expand
  43 {
  44
  45 #ifndef DOXYGEN_NO_DETAIL
  46 namespace detail
  47 {
  48
  49 struct segment_on_spheroid
  50 {
  51     template <typename Box, typename Segment, typename Strategy>
  52     static inline void apply(Box& box, Segment const& segment, Strategy const& strategy)
  53     {
  54         Box mbrs[2];
  55
  56         // compute the envelope of the segment
  57         geometry::detail::envelope::envelope_segment::apply(segment, mbrs[0], strategy);
  58
  59         // normalize the box
  60         strategy::envelope::spherical_box::apply(box, mbrs[1]);
  61
  62         // compute the envelope of the two boxes
  63         geometry::detail::envelope::envelope_range_of_boxes::apply(mbrs, box);
  64     }
  65 };
  66
  67 } // namespace detail
  68 #endif // DOXYGEN_NO_DETAIL
  69
  70
  71 template
  72 <
  73     typename CalculationType = void
  74 >
  75 class spherical_segment
  76 {
  77 public:
  78     template <typename Box, typename Segment>
  79     static inline void apply(Box& box, Segment const& segment)
  80     {
  81         detail::segment_on_spheroid::apply(box, segment,
  82             strategy::envelope::spherical_segment<CalculationType>());
  83     }
  84 };
  85
  86
  87 #ifndef DOXYGEN_NO_STRATEGY_SPECIALIZATIONS
  88
  89 namespace services
  90 {
  91
  92 template <typename CalculationType>
  93 struct default_strategy<segment_tag, spherical_equatorial_tag, CalculationType>
  94 {
  95     typedef spherical_segment<CalculationType> type;
  96 };
  97
  98 template <typename CalculationType>
  99 struct default_strategy<segment_tag, spherical_polar_tag, CalculationType>
 100 {
 101     typedef spherical_segment<CalculationType> type;
 102 };
 103
 104 } // namespace services
 105
 106 #endif // DOXYGEN_NO_STRATEGY_SPECIALIZATIONS
 107
 108
 109 }} // namespace strategy::expand
 110
 111 }} // namespace boost::geometry
 112
 113 #endif // BOOST_GEOMETRY_STRATEGY_SPHERICAL_EXPAND_SEGMENT_HPP