boost/geometry/strategies/spherical/envelope.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
   7 // This file was modified by Oracle on 2015, 2016, 2018, 2019.
   8 // Modifications copyright (c) 2015-2019, Oracle and/or its affiliates.
   9
  10 // Contributed and/or modified by Vissarion Fysikopoulos, on behalf of Oracle
  11 // Contributed and/or modified by Menelaos Karavelas, on behalf of Oracle
  12 // Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
  13
  14 // Parts of Boost.Geometry are redesigned from Geodan's Geographic Library
  15 // (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands.
  16
  17 // Distributed under the Boost Software License, Version 1.0.
  18 // (See accompanying file LICENSE_1_0.txt or copy at
  19 // http://www.boost.org/LICENSE_1_0.txt)
  20
  21 #ifndef BOOST_GEOMETRY_STRATEGIES_SPHERICAL_ENVELOPE_HPP
  22 #define BOOST_GEOMETRY_STRATEGIES_SPHERICAL_ENVELOPE_HPP
  23
  24 #include <boost/geometry/algorithms/detail/envelope/initialize.hpp>
  25 #include <boost/geometry/algorithms/detail/envelope/range_of_boxes.hpp>
  26
  27 #include <boost/geometry/iterators/segment_iterator.hpp>
  28
  29 #include <boost/geometry/strategies/spherical/envelope_box.hpp>
  30 #include <boost/geometry/strategies/spherical/envelope_segment.hpp>
  31 #include <boost/geometry/strategies/spherical/expand_box.hpp>
  32 #include <boost/geometry/strategies/spherical/expand_segment.hpp>
  33
  34 namespace boost { namespace geometry
  35 {
  36
  37 namespace strategy { namespace envelope
  38 {
  39
  40 template <typename CalculationType = void>
  41 class spherical
  42 {
  43 public:
  44     typedef spherical_tag cs_tag;
  45
  46     typedef spherical_segment<CalculationType> element_envelope_strategy_type;
  47     static inline element_envelope_strategy_type get_element_envelope_strategy()
  48     {
  49         return element_envelope_strategy_type();
  50     }
  51
  52     typedef expand::spherical_segment<CalculationType> element_expand_strategy_type;
  53     static inline element_expand_strategy_type get_element_expand_strategy()
  54     {
  55         return element_expand_strategy_type();
  56     }
  57
  58     typedef strategy::expand::spherical_box box_expand_strategy_type;
  59     static inline box_expand_strategy_type get_box_expand_strategy()
  60     {
  61         return box_expand_strategy_type();
  62     }
  63
  64     // Linestring, Ring, Polygon
  65
  66     template <typename Range>
  67     static inline geometry::segment_iterator<Range const> begin(Range const& range)
  68     {
  69         return geometry::segments_begin(range);
  70     }
  71
  72     template <typename Range>
  73     static inline geometry::segment_iterator<Range const> end(Range const& range)
  74     {
  75         return geometry::segments_end(range);
  76     }
  77
  78     // MultiLinestring, MultiPolygon
  79
  80     template <typename Box>
  81     struct multi_state
  82     {
  83         void apply(Box const& single_box)
  84         {
  85             m_boxes.push_back(single_box);
  86         }
  87
  88         void result(Box & box)
  89         {
  90             if (!m_boxes.empty())
  91             {
  92                 geometry::detail::envelope::envelope_range_of_boxes::apply(m_boxes, box);
  93             }
  94             else
  95             {
  96                 geometry::detail::envelope::initialize<Box, 0, dimension<Box>::value>::apply(box);
  97             }
  98         }
  99
 100     private:
 101         std::vector<Box> m_boxes;
 102     };
 103
 104     // Segment
 105
 106     template <typename Point1, typename Point2, typename Box>
 107     static inline void apply(Point1 const& point1, Point2 const& point2,
 108                              Box& box)
 109     {
 110         spherical_segment<CalculationType>::apply(point1, point2, box);
 111     }
 112
 113     // Box
 114
 115     template <typename BoxIn, typename Box>
 116     static inline void apply(BoxIn const& box_in, Box& box)
 117     {
 118         spherical_box::apply(box_in, box);
 119     }
 120 };
 121
 122 #ifndef DOXYGEN_NO_STRATEGY_SPECIALIZATIONS
 123
 124 namespace services
 125 {
 126
 127 template <typename Tag, typename CalculationType>
 128 struct default_strategy<Tag, spherical_equatorial_tag, CalculationType>
 129 {
 130     typedef strategy::envelope::spherical<CalculationType> type;
 131 };
 132
 133 template <typename Tag, typename CalculationType>
 134 struct default_strategy<Tag, spherical_polar_tag, CalculationType>
 135 {
 136     typedef strategy::envelope::spherical<CalculationType> type;
 137 };
 138
 139 }
 140
 141 #endif // DOXYGEN_NO_STRATEGY_SPECIALIZATIONS
 142
 143
 144 }} // namespace strategy::envelope
 145
 146 }} //namepsace boost::geometry
 147
 148 #endif // BOOST_GEOMETRY_STRATEGIES_SPHERICAL_ENVELOPE_HPP