ceph/src/boost/boost/geometry/srs/projections/proj/wag2.hpp

   1 // Boost.Geometry - gis-projections (based on PROJ4)
   2
   3 // Copyright (c) 2008-2015 Barend Gehrels, Amsterdam, the Netherlands.
   4
   5 // This file was modified by Oracle on 2017, 2018, 2019.
   6 // Modifications copyright (c) 2017-2019, Oracle and/or its affiliates.
   7 // Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle.
   8
   9 // Use, modification and distribution is subject to the Boost Software License,
  10 // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
  11 // http://www.boost.org/LICENSE_1_0.txt)
  12
  13 // This file is converted from PROJ4, http://trac.osgeo.org/proj
  14 // PROJ4 is originally written by Gerald Evenden (then of the USGS)
  15 // PROJ4 is maintained by Frank Warmerdam
  16 // PROJ4 is converted to Boost.Geometry by Barend Gehrels
  17
  18 // Last updated version of proj: 5.0.0
  19
  20 // Original copyright notice:
  21
  22 // Permission is hereby granted, free of charge, to any person obtaining a
  23 // copy of this software and associated documentation files (the "Software"),
  24 // to deal in the Software without restriction, including without limitation
  25 // the rights to use, copy, modify, merge, publish, distribute, sublicense,
  26 // and/or sell copies of the Software, and to permit persons to whom the
  27 // Software is furnished to do so, subject to the following conditions:
  28
  29 // The above copyright notice and this permission notice shall be included
  30 // in all copies or substantial portions of the Software.
  31
  32 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  33 // OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  34 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  35 // THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  36 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  37 // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  38 // DEALINGS IN THE SOFTWARE.
  39
  40 #ifndef BOOST_GEOMETRY_PROJECTIONS_WAG2_HPP
  41 #define BOOST_GEOMETRY_PROJECTIONS_WAG2_HPP
  42
  43 #include <boost/geometry/srs/projections/impl/base_static.hpp>
  44 #include <boost/geometry/srs/projections/impl/base_dynamic.hpp>
  45 #include <boost/geometry/srs/projections/impl/projects.hpp>
  46 #include <boost/geometry/srs/projections/impl/factory_entry.hpp>
  47 #include <boost/geometry/srs/projections/impl/aasincos.hpp>
  48
  49 namespace boost { namespace geometry
  50 {
  51
  52 namespace projections
  53 {
  54     #ifndef DOXYGEN_NO_DETAIL
  55     namespace detail { namespace wag2
  56     {
  57
  58             static const double C_x = 0.92483;
  59             static const double C_y = 1.38725;
  60             static const double C_p1 = 0.88022;
  61             static const double C_p2 = 0.88550;
  62
  63             template <typename T, typename Parameters>
  64             struct base_wag2_spheroid
  65             {
  66                 // FORWARD(s_forward)  spheroid
  67                 // Project coordinates from geographic (lon, lat) to cartesian (x, y)
  68                 inline void fwd(Parameters const& , T const& lp_lon, T lp_lat, T& xy_x, T& xy_y) const
  69                 {
  70                     lp_lat = aasin(C_p1 * sin(C_p2 * lp_lat));
  71                     xy_x = C_x * lp_lon * cos(lp_lat);
  72                     xy_y = C_y * lp_lat;
  73                 }
  74
  75                 // INVERSE(s_inverse)  spheroid
  76                 // Project coordinates from cartesian (x, y) to geographic (lon, lat)
  77                 inline void inv(Parameters const& , T const& xy_x, T const& xy_y, T& lp_lon, T& lp_lat) const
  78                 {
  79                     lp_lat = xy_y / C_y;
  80                     lp_lon = xy_x / (C_x * cos(lp_lat));
  81                     lp_lat = aasin(sin(lp_lat) / C_p1) / C_p2;
  82                 }
  83
  84                 static inline std::string get_name()
  85                 {
  86                     return "wag2_spheroid";
  87                 }
  88
  89             };
  90
  91             // Wagner II
  92             template <typename Parameters>
  93             inline void setup_wag2(Parameters& par)
  94             {
  95                 par.es = 0.;
  96             }
  97
  98     }} // namespace detail::wag2
  99     #endif // doxygen
 100
 101     /*!
 102         \brief Wagner II projection
 103         \ingroup projections
 104         \tparam Geographic latlong point type
 105         \tparam Cartesian xy point type
 106         \tparam Parameters parameter type
 107         \par Projection characteristics
 108          - Pseudocylindrical
 109          - Spheroid
 110         \par Example
 111         \image html ex_wag2.gif
 112     */
 113     template <typename T, typename Parameters>
 114     struct wag2_spheroid : public detail::wag2::base_wag2_spheroid<T, Parameters>
 115     {
 116         template <typename Params>
 117         inline wag2_spheroid(Params const& , Parameters & par)
 118         {
 119             detail::wag2::setup_wag2(par);
 120         }
 121     };
 122
 123     #ifndef DOXYGEN_NO_DETAIL
 124     namespace detail
 125     {
 126
 127         // Static projection
 128         BOOST_GEOMETRY_PROJECTIONS_DETAIL_STATIC_PROJECTION_FI(srs::spar::proj_wag2, wag2_spheroid)
 129
 130         // Factory entry(s)
 131         BOOST_GEOMETRY_PROJECTIONS_DETAIL_FACTORY_ENTRY_FI(wag2_entry, wag2_spheroid)
 132
 133         BOOST_GEOMETRY_PROJECTIONS_DETAIL_FACTORY_INIT_BEGIN(wag2_init)
 134         {
 135             BOOST_GEOMETRY_PROJECTIONS_DETAIL_FACTORY_INIT_ENTRY(wag2, wag2_entry)
 136         }
 137
 138     } // namespace detail
 139     #endif // doxygen
 140
 141 } // namespace projections
 142
 143 }} // namespace boost::geometry
 144
 145 #endif // BOOST_GEOMETRY_PROJECTIONS_WAG2_HPP
 146