ceph/src/boost/boost/geometry/strategies/geographic/distance_thomas.hpp

   1 // Boost.Geometry
   2
   3 // Copyright (c) 2007-2012 Barend Gehrels, Amsterdam, the Netherlands.
   4
   5 // This file was modified by Oracle on 2015-2017.
   6 // Modifications copyright (c) 2015-2017 Oracle and/or its affiliates.
   7
   8 // Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
   9
  10 // Use, modification and distribution is subject to the Boost Software License,
  11 // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
  12 // http://www.boost.org/LICENSE_1_0.txt)
  13
  14 #ifndef BOOST_GEOMETRY_STRATEGIES_GEOGRAPHIC_THOMAS_HPP
  15 #define BOOST_GEOMETRY_STRATEGIES_GEOGRAPHIC_THOMAS_HPP
  16
  17
  18 #include <boost/geometry/strategies/geographic/distance.hpp>
  19 #include <boost/geometry/strategies/geographic/parameters.hpp>
  20
  21
  22 namespace boost { namespace geometry
  23 {
  24
  25 namespace strategy { namespace distance
  26 {
  27
  28 /*!
  29 \brief The solution of the inverse problem of geodesics on latlong coordinates,
  30        Forsyth-Andoyer-Lambert type approximation with second order terms.
  31 \ingroup distance
  32 \tparam Spheroid The reference spheroid model
  33 \tparam CalculationType \tparam_calculation
  34 \author See
  35     - Technical Report: PAUL D. THOMAS, MATHEMATICAL MODELS FOR NAVIGATION SYSTEMS, 1965
  36       http://www.dtic.mil/docs/citations/AD0627893
  37     - Technical Report: PAUL D. THOMAS, SPHEROIDAL GEODESICS, REFERENCE SYSTEMS, AND LOCAL GEOMETRY, 1970
  38       http://www.dtic.mil/docs/citations/AD703541
  39 */
  40 template
  41 <
  42     typename Spheroid = srs::spheroid<double>,
  43     typename CalculationType = void
  44 >
  45 class thomas
  46     : public strategy::distance::geographic
  47         <
  48             strategy::thomas, Spheroid, CalculationType
  49         >
  50 {
  51     typedef strategy::distance::geographic
  52         <
  53             strategy::thomas, Spheroid, CalculationType
  54         > base_type;
  55
  56 public :
  57     inline thomas()
  58         : base_type()
  59     {}
  60
  61     explicit inline thomas(Spheroid const& spheroid)
  62         : base_type(spheroid)
  63     {}
  64 };
  65
  66 #ifndef DOXYGEN_NO_STRATEGY_SPECIALIZATIONS
  67 namespace services
  68 {
  69
  70 template <typename Spheroid, typename CalculationType>
  71 struct tag<thomas<Spheroid, CalculationType> >
  72 {
  73     typedef strategy_tag_distance_point_point type;
  74 };
  75
  76
  77 template <typename Spheroid, typename CalculationType, typename P1, typename P2>
  78 struct return_type<thomas<Spheroid, CalculationType>, P1, P2>
  79     : thomas<Spheroid, CalculationType>::template calculation_type<P1, P2>
  80 {};
  81
  82
  83 template <typename Spheroid, typename CalculationType>
  84 struct comparable_type<thomas<Spheroid, CalculationType> >
  85 {
  86     typedef thomas<Spheroid, CalculationType> type;
  87 };
  88
  89
  90 template <typename Spheroid, typename CalculationType>
  91 struct get_comparable<thomas<Spheroid, CalculationType> >
  92 {
  93     static inline thomas<Spheroid, CalculationType> apply(thomas<Spheroid, CalculationType> const& input)
  94     {
  95         return input;
  96     }
  97 };
  98
  99 template <typename Spheroid, typename CalculationType, typename P1, typename P2>
 100 struct result_from_distance<thomas<Spheroid, CalculationType>, P1, P2 >
 101 {
 102     template <typename T>
 103     static inline typename return_type<thomas<Spheroid, CalculationType>, P1, P2>::type
 104         apply(thomas<Spheroid, CalculationType> const& , T const& value)
 105     {
 106         return value;
 107     }
 108 };
 109
 110
 111 } // namespace services
 112 #endif // DOXYGEN_NO_STRATEGY_SPECIALIZATIONS
 113
 114
 115 }} // namespace strategy::distance
 116
 117
 118 }} // namespace boost::geometry
 119
 120
 121 #endif // BOOST_GEOMETRY_STRATEGIES_GEOGRAPHIC_THOMAS_HPP