ceph/src/boost/boost/geometry/srs/projections/proj/wag7.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_WAG7_HPP
  41 #define BOOST_GEOMETRY_PROJECTIONS_WAG7_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
  48 namespace boost { namespace geometry
  49 {
  50
  51 namespace projections
  52 {
  53     #ifndef DOXYGEN_NO_DETAIL
  54     namespace detail { namespace wag7
  55     {
  56
  57             template <typename T, typename Parameters>
  58             struct base_wag7_spheroid
  59             {
  60                 // FORWARD(s_forward)  sphere
  61                 // Project coordinates from geographic (lon, lat) to cartesian (x, y)
  62                 inline void fwd(Parameters const& , T lp_lon, T const& lp_lat, T& xy_x, T& xy_y) const
  63                 {
  64                     T theta, ct, D;
  65
  66                     theta = asin(xy_y = 0.90630778703664996 * sin(lp_lat));
  67                     xy_x = 2.66723 * (ct = cos(theta)) * sin(lp_lon /= 3.);
  68                     xy_y *= 1.24104 * (D = 1/(sqrt(0.5 * (1 + ct * cos(lp_lon)))));
  69                     xy_x *= D;
  70                 }
  71
  72                 static inline std::string get_name()
  73                 {
  74                     return "wag7_spheroid";
  75                 }
  76
  77             };
  78
  79             // Wagner VII
  80             template <typename Parameters>
  81             inline void setup_wag7(Parameters& par)
  82             {
  83                 par.es = 0.;
  84             }
  85
  86     }} // namespace detail::wag7
  87     #endif // doxygen
  88
  89     /*!
  90         \brief Wagner VII projection
  91         \ingroup projections
  92         \tparam Geographic latlong point type
  93         \tparam Cartesian xy point type
  94         \tparam Parameters parameter type
  95         \par Projection characteristics
  96          - Miscellaneous
  97          - Spheroid
  98          - no inverse
  99         \par Example
 100         \image html ex_wag7.gif
 101     */
 102     template <typename T, typename Parameters>
 103     struct wag7_spheroid : public detail::wag7::base_wag7_spheroid<T, Parameters>
 104     {
 105         template <typename Params>
 106         inline wag7_spheroid(Params const& , Parameters & par)
 107         {
 108             detail::wag7::setup_wag7(par);
 109         }
 110     };
 111
 112     #ifndef DOXYGEN_NO_DETAIL
 113     namespace detail
 114     {
 115
 116         // Static projection
 117         BOOST_GEOMETRY_PROJECTIONS_DETAIL_STATIC_PROJECTION_F(srs::spar::proj_wag7, wag7_spheroid)
 118
 119         // Factory entry(s)
 120         BOOST_GEOMETRY_PROJECTIONS_DETAIL_FACTORY_ENTRY_F(wag7_entry, wag7_spheroid)
 121
 122         BOOST_GEOMETRY_PROJECTIONS_DETAIL_FACTORY_INIT_BEGIN(wag7_init)
 123         {
 124             BOOST_GEOMETRY_PROJECTIONS_DETAIL_FACTORY_INIT_ENTRY(wag7, wag7_entry)
 125         }
 126
 127     } // namespace detail
 128     #endif // doxygen
 129
 130 } // namespace projections
 131
 132 }} // namespace boost::geometry
 133
 134 #endif // BOOST_GEOMETRY_PROJECTIONS_WAG7_HPP
 135