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 // Boost.Geometry - gis-projections (based on PROJ4)
 
 // Copyright (c) 2008-2015 Barend Gehrels, Amsterdam, the Netherlands.
 
 // This file was modified by Oracle on 2017, 2018, 2019.
 // Modifications copyright (c) 2017-2019, Oracle and/or its affiliates.
 // Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle.
 
 // Use, modification and distribution is subject to the Boost Software License,
 // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
 // http://www.boost.org/LICENSE_1_0.txt)
 
 // This file is converted from PROJ4, http://trac.osgeo.org/proj
 // PROJ4 is originally written by Gerald Evenden (then of the USGS)
 // PROJ4 is maintained by Frank Warmerdam
 // PROJ4 is converted to Boost.Geometry by Barend Gehrels
 
 // Last updated version of proj: 5.0.0
 
 // Original copyright notice:
 
 // Permission is hereby granted, free of charge, to any person obtaining a
 // copy of this software and associated documentation files (the "Software"),
 // to deal in the Software without restriction, including without limitation
 // the rights to use, copy, modify, merge, publish, distribute, sublicense,
 // and/or sell copies of the Software, and to permit persons to whom the
 // Software is furnished to do so, subject to the following conditions:
 
 // The above copyright notice and this permission notice shall be included
 // in all copies or substantial portions of the Software.
 
 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 // OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 // THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 // DEALINGS IN THE SOFTWARE.
 
 #ifndef BOOST_GEOMETRY_PROJECTIONS_WINK1_HPP
 #define BOOST_GEOMETRY_PROJECTIONS_WINK1_HPP
 
 #include <boost/geometry/srs/projections/impl/base_static.hpp>
 #include <boost/geometry/srs/projections/impl/base_dynamic.hpp>
 #include <boost/geometry/srs/projections/impl/factory_entry.hpp>
 #include <boost/geometry/srs/projections/impl/pj_param.hpp>
 #include <boost/geometry/srs/projections/impl/projects.hpp>
 
 namespace boost { namespace geometry
 {
 
 namespace projections
 {
     #ifndef DOXYGEN_NO_DETAIL
     namespace detail { namespace wink1
     {
 
             template <typename T>
             struct par_wink1
             {
                 T    cosphi1;
             };
 
             template <typename T, typename Parameters>
             struct base_wink1_spheroid
             {
                 par_wink1<T> m_proj_parm;
 
                 // FORWARD(s_forward)  spheroid
                 // Project coordinates from geographic (lon, lat) to cartesian (x, y)
                 inline void fwd(Parameters const& , T const& lp_lon, T const& lp_lat, T& xy_x, T& xy_y) const
                 {
                     xy_x = .5 * lp_lon * (this->m_proj_parm.cosphi1 + cos(lp_lat));
                     xy_y = lp_lat;
                 }
 
                 // INVERSE(s_inverse)  spheroid
                 // Project coordinates from cartesian (x, y) to geographic (lon, lat)
                 inline void inv(Parameters const& , T const& xy_x, T const& xy_y, T& lp_lon, T& lp_lat) const
                 {
                     lp_lat = xy_y;
                     lp_lon = 2. * xy_x / (this->m_proj_parm.cosphi1 + cos(lp_lat));
                 }
 
                 static inline std::string get_name()
                 {
                     return "wink1_spheroid";
                 }
 
             };
 
             // Winkel I
             template <typename Params, typename Parameters, typename T>
             inline void setup_wink1(Params const& params, Parameters& par, par_wink1<T>& proj_parm)
             {
                 proj_parm.cosphi1 = cos(pj_get_param_r<T, srs::spar::lat_ts>(params, "lat_ts", srs::dpar::lat_ts));
                 par.es = 0.;
             }
 
     }} // namespace detail::wink1
     #endif // doxygen
 
     /*!
         \brief Winkel I projection
         \ingroup projections
         \tparam Geographic latlong point type
         \tparam Cartesian xy point type
         \tparam Parameters parameter type
         \par Projection characteristics
          - Pseudocylindrical
          - Spheroid
         \par Projection parameters
          - lat_ts: Latitude of true scale (degrees)
         \par Example
         \image html ex_wink1.gif
     */
     template <typename T, typename Parameters>
     struct wink1_spheroid : public detail::wink1::base_wink1_spheroid<T, Parameters>
     {
         template <typename Params>
         inline wink1_spheroid(Params const& params, Parameters & par)
         {
             detail::wink1::setup_wink1(params, par, this->m_proj_parm);
         }
     };
 
     #ifndef DOXYGEN_NO_DETAIL
     namespace detail
     {
 
         // Static projection
         BOOST_GEOMETRY_PROJECTIONS_DETAIL_STATIC_PROJECTION_FI(srs::spar::proj_wink1, wink1_spheroid)
 
         // Factory entry(s)
         BOOST_GEOMETRY_PROJECTIONS_DETAIL_FACTORY_ENTRY_FI(wink1_entry, wink1_spheroid)
 
         BOOST_GEOMETRY_PROJECTIONS_DETAIL_FACTORY_INIT_BEGIN(wink1_init)
         {
             BOOST_GEOMETRY_PROJECTIONS_DETAIL_FACTORY_INIT_ENTRY(wink1, wink1_entry)
         }
 
     } // namespace detail
     #endif // doxygen
 
 } // namespace projections
 
 }} // namespace boost::geometry
 
 #endif // BOOST_GEOMETRY_PROJECTIONS_WINK1_HPP
 

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