boost/geometry/srs/projections/proj/urm5.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_URM5_HPP
  41 #define BOOST_GEOMETRY_PROJECTIONS_URM5_HPP
  42
  43 #include <boost/geometry/srs/projections/impl/aasincos.hpp>
  44 #include <boost/geometry/srs/projections/impl/base_static.hpp>
  45 #include <boost/geometry/srs/projections/impl/base_dynamic.hpp>
  46 #include <boost/geometry/srs/projections/impl/factory_entry.hpp>
  47 #include <boost/geometry/srs/projections/impl/pj_param.hpp>
  48 #include <boost/geometry/srs/projections/impl/projects.hpp>
  49
  50 namespace boost { namespace geometry
  51 {
  52
  53 namespace projections
  54 {
  55     #ifndef DOXYGEN_NO_DETAIL
  56     namespace detail { namespace urm5
  57     {
  58             template <typename T>
  59             struct par_urm5
  60             {
  61                 T m, rmn, q3, n;
  62             };
  63
  64             template <typename T, typename Parameters>
  65             struct base_urm5_spheroid
  66             {
  67                 par_urm5<T> m_proj_parm;
  68
  69                 // FORWARD(s_forward)  spheroid
  70                 // Project coordinates from geographic (lon, lat) to cartesian (x, y)
  71                 inline void fwd(Parameters const&, T const& lp_lon, T lp_lat, T& xy_x, T& xy_y) const
  72                 {
  73                     T t;
  74
  75                     t = lp_lat = aasin(this->m_proj_parm.n * sin(lp_lat));
  76                     xy_x = this->m_proj_parm.m * lp_lon * cos(lp_lat);
  77                     t *= t;
  78                     xy_y = lp_lat * (1. + t * this->m_proj_parm.q3) * this->m_proj_parm.rmn;
  79                 }
  80
  81                 static inline std::string get_name()
  82                 {
  83                     return "urm5_spheroid";
  84                 }
  85
  86             };
  87
  88             // Urmaev V
  89             template <typename Params, typename Parameters, typename T>
  90             inline void setup_urm5(Params const& params, Parameters& par, par_urm5<T>& proj_parm)
  91             {
  92                 T alpha, t;
  93
  94                 if (pj_param_f<srs::spar::n>(params, "n", srs::dpar::n, proj_parm.n)) {
  95                     if (proj_parm.n <= 0. || proj_parm.n > 1.)
  96                         BOOST_THROW_EXCEPTION( projection_exception(error_n_out_of_range) );
  97                 } else {
  98                     BOOST_THROW_EXCEPTION( projection_exception(error_n_out_of_range) );
  99                 }
 100                 proj_parm.q3 = pj_get_param_f<T, srs::spar::q>(params, "q", srs::dpar::q) / 3.;
 101                 alpha = pj_get_param_r<T, srs::spar::alpha>(params, "alpha", srs::dpar::alpha);
 102                 t = proj_parm.n * sin(alpha);
 103                 proj_parm.m = cos(alpha) / sqrt(1. - t * t);
 104                 proj_parm.rmn = 1. / (proj_parm.m * proj_parm.n);
 105
 106                 par.es = 0.;
 107             }
 108
 109     }} // namespace detail::urm5
 110     #endif // doxygen
 111
 112     /*!
 113         \brief Urmaev V projection
 114         \ingroup projections
 115         \tparam Geographic latlong point type
 116         \tparam Cartesian xy point type
 117         \tparam Parameters parameter type
 118         \par Projection characteristics
 119          - Pseudocylindrical
 120          - Spheroid
 121          - no inverse
 122         \par Projection parameters
 123          - n (real)
 124          - q (real)
 125          - alpha: Alpha (degrees)
 126         \par Example
 127         \image html ex_urm5.gif
 128     */
 129     template <typename T, typename Parameters>
 130     struct urm5_spheroid : public detail::urm5::base_urm5_spheroid<T, Parameters>
 131     {
 132         template <typename Params>
 133         inline urm5_spheroid(Params const& params, Parameters & par)
 134         {
 135             detail::urm5::setup_urm5(params, par, this->m_proj_parm);
 136         }
 137     };
 138
 139     #ifndef DOXYGEN_NO_DETAIL
 140     namespace detail
 141     {
 142
 143         // Static projection
 144         BOOST_GEOMETRY_PROJECTIONS_DETAIL_STATIC_PROJECTION_F(srs::spar::proj_urm5, urm5_spheroid)
 145
 146         // Factory entry(s)
 147         BOOST_GEOMETRY_PROJECTIONS_DETAIL_FACTORY_ENTRY_F(urm5_entry, urm5_spheroid)
 148
 149         BOOST_GEOMETRY_PROJECTIONS_DETAIL_FACTORY_INIT_BEGIN(urm5_init)
 150         {
 151             BOOST_GEOMETRY_PROJECTIONS_DETAIL_FACTORY_INIT_ENTRY(urm5, urm5_entry)
 152         }
 153
 154     } // namespace detail
 155     #endif // doxygen
 156
 157 } // namespace projections
 158
 159 }} // namespace boost::geometry
 160
 161 #endif // BOOST_GEOMETRY_PROJECTIONS_URM5_HPP
 162