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   1 // Boost.Geometry (aka GGL, Generic Geometry Library)
   2
   3 // Copyright (c) 2017-2018, Oracle and/or its affiliates.
   4
   5 // Contributed and/or modified by Vissarion Fysikopoulos, on behalf of Oracle
   6 // Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle.
   7
   8 // Use, modification and distribution is subject to the Boost Software License,
   9 // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
  10 // http://www.boost.org/LICENSE_1_0.txt)
  11
  12 #ifndef BOOST_GEOMETRY_STRATEGIES_GEOGRAPHIC_DISTANCE_CROSS_TRACK_POINT_BOX_HPP
  13 #define BOOST_GEOMETRY_STRATEGIES_GEOGRAPHIC_DISTANCE_CROSS_TRACK_POINT_BOX_HPP
  14
  15 #include <boost/config.hpp>
  16 #include <boost/concept_check.hpp>
  17 #include <boost/mpl/if.hpp>
  18 #include <boost/type_traits/is_void.hpp>
  19
  20 #include <boost/geometry/core/access.hpp>
  21 #include <boost/geometry/core/assert.hpp>
  22 #include <boost/geometry/core/point_type.hpp>
  23 #include <boost/geometry/core/radian_access.hpp>
  24 #include <boost/geometry/core/tags.hpp>
  25
  26 #include <boost/geometry/strategies/distance.hpp>
  27 #include <boost/geometry/strategies/concepts/distance_concept.hpp>
  28 #include <boost/geometry/strategies/spherical/distance_cross_track.hpp>
  29 #include <boost/geometry/strategies/geographic/distance_cross_track.hpp>
  30 #include <boost/geometry/strategies/spherical/distance_cross_track_point_box.hpp>
  31
  32 #include <boost/geometry/util/math.hpp>
  33 #include <boost/geometry/algorithms/detail/assign_box_corners.hpp>
  34
  35
  36 namespace boost { namespace geometry
  37 {
  38
  39 namespace strategy { namespace distance
  40 {
  41
  42
  43 /*!
  44 \brief Strategy functor for distance point to box calculation
  45 \ingroup strategies
  46 \details Class which calculates the distance of a point to a box, for
  47 points and boxes on a sphere or globe
  48 \tparam CalculationType \tparam_calculation
  49 \tparam Strategy underlying point-segment distance strategy, defaults
  50 to cross track
  51 \qbk{
  52 [heading See also]
  53 [link geometry.reference.algorithms.distance.distance_3_with_strategy distance (with strategy)]
  54 }
  55 */
  56 template
  57 <
  58     typename FormulaPolicy = strategy::andoyer,
  59     typename Spheroid = srs::spheroid<double>,
  60     typename CalculationType = void
  61 >
  62 class geographic_cross_track_point_box
  63 {
  64 public:
  65     // point-point strategy getters
  66     struct distance_ps_strategy
  67     {
  68         typedef geographic_cross_track<FormulaPolicy, Spheroid, CalculationType> type;
  69     };
  70
  71     template <typename Point, typename Box>
  72     struct return_type
  73         : services::return_type<typename distance_ps_strategy::type,
  74                                 Point, typename point_type<Box>::type>
  75     {};
  76
  77     //constructor
  78
  79     explicit geographic_cross_track_point_box(Spheroid const& spheroid = Spheroid())
  80              : m_spheroid(spheroid)
  81     {}
  82
  83     template <typename Point, typename Box>
  84     inline typename return_type<Point, Box>::type
  85     apply(Point const& point, Box const& box) const
  86     {
  87 /*
  88 #if !defined(BOOST_MSVC)
  89         BOOST_CONCEPT_ASSERT
  90             (
  91                 (concepts::PointSegmentDistanceStrategy
  92                     <
  93                         Strategy, Point, typename point_type<Box>::type
  94                     >)
  95             );
  96 #endif
  97 */
  98
  99         typedef typename return_type<Point, Box>::type return_type;
 100
 101         return details::cross_track_point_box_generic
 102                         <return_type>::apply(point, box,
 103                                              typename distance_ps_strategy::type(m_spheroid));
 104     }
 105
 106 private :
 107     Spheroid m_spheroid;
 108 };
 109
 110
 111
 112 #ifndef DOXYGEN_NO_STRATEGY_SPECIALIZATIONS
 113 namespace services
 114 {
 115
 116 template <typename Strategy, typename Spheroid, typename CalculationType>
 117 struct tag<geographic_cross_track_point_box<Strategy, Spheroid, CalculationType> >
 118 {
 119     typedef strategy_tag_distance_point_box type;
 120 };
 121
 122
 123 template <typename Strategy, typename Spheroid, typename CalculationType, typename P, typename Box>
 124 struct return_type<geographic_cross_track_point_box<Strategy, Spheroid, CalculationType>, P, Box>
 125     : geographic_cross_track_point_box
 126         <
 127             Strategy, Spheroid, CalculationType
 128         >::template return_type<P, Box>
 129 {};
 130
 131 template <typename Strategy, typename Spheroid, typename P, typename Box>
 132 struct return_type<geographic_cross_track_point_box<Strategy, Spheroid>, P, Box>
 133     : geographic_cross_track_point_box
 134         <
 135             Strategy, Spheroid
 136         >::template return_type<P, Box>
 137 {};
 138
 139 template <typename Strategy, typename P, typename Box>
 140 struct return_type<geographic_cross_track_point_box<Strategy>, P, Box>
 141     : geographic_cross_track_point_box
 142         <
 143             Strategy
 144         >::template return_type<P, Box>
 145 {};
 146
 147 template <typename Strategy, typename Spheroid, typename CalculationType>
 148 struct comparable_type<geographic_cross_track_point_box<Strategy, Spheroid, CalculationType> >
 149 {
 150     typedef geographic_cross_track_point_box
 151         <
 152             Strategy, Spheroid, CalculationType
 153         > type;
 154 };
 155
 156
 157 template <typename Strategy, typename Spheroid, typename CalculationType>
 158 struct get_comparable<geographic_cross_track_point_box<Strategy, Spheroid, CalculationType> >
 159 {
 160 public:
 161     static inline geographic_cross_track_point_box<Strategy, Spheroid, CalculationType>
 162     apply(geographic_cross_track_point_box<Strategy, Spheroid, CalculationType> const& str)
 163     {
 164         return str;
 165     }
 166 };
 167
 168
 169 template <typename Strategy, typename Spheroid, typename CalculationType, typename P, typename Box>
 170 struct result_from_distance
 171     <
 172         geographic_cross_track_point_box<Strategy, Spheroid, CalculationType>, P, Box
 173     >
 174 {
 175 private:
 176     typedef geographic_cross_track_point_box<Strategy, Spheroid, CalculationType> this_strategy;
 177
 178     typedef typename this_strategy::template return_type
 179         <
 180             P, Box
 181         >::type return_type;
 182
 183 public:
 184     template <typename T>
 185     static inline return_type apply(this_strategy const& strategy,
 186                                     T const& distance)
 187     {
 188         result_from_distance
 189             <
 190                 Strategy, P, typename point_type<Box>::type
 191             >::apply(strategy, distance);
 192     }
 193 };
 194
 195 template <typename Point, typename Box>
 196 struct default_strategy
 197     <
 198         point_tag, box_tag, Point, Box,
 199         geographic_tag, geographic_tag
 200     >
 201 {
 202     typedef geographic_cross_track_point_box<> type;
 203 };
 204
 205 template <typename Box, typename Point>
 206 struct default_strategy
 207     <
 208         box_tag, point_tag, Box, Point,
 209         geographic_tag, geographic_tag
 210     >
 211 {
 212     typedef typename default_strategy
 213         <
 214             point_tag, box_tag, Point, Box,
 215             geographic_tag, geographic_tag
 216         >::type type;
 217 };
 218
 219 } // namespace services
 220 #endif // DOXYGEN_NO_STRATEGY_SPECIALIZATIONS
 221
 222
 223 }} // namespace strategy::distance
 224
 225
 226 }} // namespace boost::geometry
 227
 228 #endif // BOOST_GEOMETRY_STRATEGIES_GEOGRAPHIC_DISTANCE_CROSS_TRACK_POINT_BOX_HPP