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+#ifndef BOOST_GEOMETRY_PROJECTIONS_GSTMERC_HPP
+#define BOOST_GEOMETRY_PROJECTIONS_GSTMERC_HPP
+
+// Boost.Geometry - extensions-gis-projections (based on PROJ4)
+// This file is automatically generated. DO NOT EDIT.
+
+// Copyright (c) 2008-2015 Barend Gehrels, Amsterdam, the Netherlands.
+
+// This file was modified by Oracle on 2017.
+// Modifications copyright (c) 2017, 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: 4.9.1
+
+// 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.
+
+#include <boost/geometry/srs/projections/impl/base_static.hpp>
+#include <boost/geometry/srs/projections/impl/base_dynamic.hpp>
+#include <boost/geometry/srs/projections/impl/projects.hpp>
+#include <boost/geometry/srs/projections/impl/factory_entry.hpp>
+#include <boost/geometry/srs/projections/impl/pj_phi2.hpp>
+#include <boost/geometry/srs/projections/impl/pj_tsfn.hpp>
+
+namespace boost { namespace geometry
+{
+
+namespace srs { namespace par4
+{
+ struct gstmerc {};
+
+}} //namespace srs::par4
+
+namespace projections
+{
+ #ifndef DOXYGEN_NO_DETAIL
+ namespace detail { namespace gstmerc
+ {
+ template <typename T>
+ struct par_gstmerc
+ {
+ T lamc;
+ T phic;
+ T c;
+ T n1;
+ T n2;
+ T XS;
+ T YS;
+ };
+
+ // template class, using CRTP to implement forward/inverse
+ template <typename CalculationType, typename Parameters>
+ struct base_gstmerc_spheroid : public base_t_fi<base_gstmerc_spheroid<CalculationType, Parameters>,
+ CalculationType, Parameters>
+ {
+
+ typedef CalculationType geographic_type;
+ typedef CalculationType cartesian_type;
+
+ par_gstmerc<CalculationType> m_proj_parm;
+
+ inline base_gstmerc_spheroid(const Parameters& par)
+ : base_t_fi<base_gstmerc_spheroid<CalculationType, Parameters>,
+ CalculationType, Parameters>(*this, par) {}
+
+ // FORWARD(s_forward) spheroid
+ // Project coordinates from geographic (lon, lat) to cartesian (x, y)
+ inline void fwd(geographic_type& lp_lon, geographic_type& lp_lat, cartesian_type& xy_x, cartesian_type& xy_y) const
+ {
+ CalculationType L, Ls, sinLs1, Ls1;
+ L= this->m_proj_parm.n1*lp_lon;
+ Ls= this->m_proj_parm.c+this->m_proj_parm.n1*log(pj_tsfn(-1.0*lp_lat,-1.0*sin(lp_lat),this->m_par.e));
+ sinLs1= sin(L)/cosh(Ls);
+ Ls1= log(pj_tsfn(-1.0*asin(sinLs1),0.0,0.0));
+ xy_x= (this->m_proj_parm.XS + this->m_proj_parm.n2*Ls1)*this->m_par.ra;
+ xy_y= (this->m_proj_parm.YS + this->m_proj_parm.n2*atan(sinh(Ls)/cos(L)))*this->m_par.ra;
+ /*fprintf(stderr,"fwd:\nL =%16.13f\nLs =%16.13f\nLs1 =%16.13f\nLP(%16.13f,%16.13f)=XY(%16.4f,%16.4f)\n",L,Ls,Ls1,lp_lon+this->m_par.lam0,lp_lat,(xy_x*this->m_par.a + this->m_par.x0)*this->m_par.to_meter,(xy_y*this->m_par.a + this->m_par.y0)*this->m_par.to_meter);*/
+ }
+
+ // INVERSE(s_inverse) spheroid
+ // Project coordinates from cartesian (x, y) to geographic (lon, lat)
+ inline void inv(cartesian_type& xy_x, cartesian_type& xy_y, geographic_type& lp_lon, geographic_type& lp_lat) const
+ {
+ CalculationType L, LC, sinC;
+ L= atan(sinh((xy_x*this->m_par.a - this->m_proj_parm.XS)/this->m_proj_parm.n2)/cos((xy_y*this->m_par.a - this->m_proj_parm.YS)/this->m_proj_parm.n2));
+ sinC= sin((xy_y*this->m_par.a - this->m_proj_parm.YS)/this->m_proj_parm.n2)/cosh((xy_x*this->m_par.a - this->m_proj_parm.XS)/this->m_proj_parm.n2);
+ LC= log(pj_tsfn(-1.0*asin(sinC),0.0,0.0));
+ lp_lon= L/this->m_proj_parm.n1;
+ lp_lat= -1.0*pj_phi2(exp((LC-this->m_proj_parm.c)/this->m_proj_parm.n1),this->m_par.e);
+ /*fprintf(stderr,"inv:\nL =%16.13f\nsinC =%16.13f\nLC =%16.13f\nXY(%16.4f,%16.4f)=LP(%16.13f,%16.13f)\n",L,sinC,LC,((xy_x/this->m_par.ra)+this->m_par.x0)/this->m_par.to_meter,((xy_y/this->m_par.ra)+this->m_par.y0)/this->m_par.to_meter,lp_lon+this->m_par.lam0,lp_lat);*/
+ }
+
+ static inline std::string get_name()
+ {
+ return "gstmerc_spheroid";
+ }
+
+ };
+
+ // Gauss-Schreiber Transverse Mercator (aka Gauss-Laborde Reunion)
+ template <typename Parameters, typename T>
+ inline void setup_gstmerc(Parameters& par, par_gstmerc<T>& proj_parm)
+ {
+ proj_parm.lamc= par.lam0;
+ proj_parm.n1= sqrt(1.0+par.es*pow(cos(par.phi0),4.0)/(1.0-par.es));
+ proj_parm.phic= asin(sin(par.phi0)/proj_parm.n1);
+ proj_parm.c= log(pj_tsfn(-1.0*proj_parm.phic,0.0,0.0))
+ -proj_parm.n1*log(pj_tsfn(-1.0*par.phi0,-1.0*sin(par.phi0),par.e));
+ proj_parm.n2= par.k0*par.a*sqrt(1.0-par.es)/(1.0-par.es*sin(par.phi0)*sin(par.phi0));
+ proj_parm.XS= 0;/* -par.x0 */
+ proj_parm.YS= -1.0*proj_parm.n2*proj_parm.phic;/* -par.y0 */
+ /*fprintf(stderr,"a (m) =%16.4f\ne =%16.13f\nl0(rad)=%16.13f\np0(rad)=%16.13f\nk0 =%16.4f\nX0 (m)=%16.4f\nY0 (m)=%16.4f\n\nlC(rad)=%16.13f\npC(rad)=%16.13f\nc =%16.13f\nn1 =%16.13f\nn2 (m) =%16.4f\nXS (m) =%16.4f\nYS (m) =%16.4f\n", par.a, par.e, par.lam0, par.phi0, par.k0, par.x0, par.y0, proj_parm.lamc, proj_parm.phic, proj_parm.c, proj_parm.n1, proj_parm.n2, proj_parm.XS +par.x0, proj_parm.YS + par.y0);*/
+ }
+
+ }} // namespace detail::gstmerc
+ #endif // doxygen
+
+ /*!
+ \brief Gauss-Schreiber Transverse Mercator (aka Gauss-Laborde Reunion) projection
+ \ingroup projections
+ \tparam Geographic latlong point type
+ \tparam Cartesian xy point type
+ \tparam Parameters parameter type
+ \par Projection characteristics
+ - Cylindrical
+ - Spheroid
+ - Ellipsoid
+ \par Projection parameters
+ - lat_0: Latitude of origin
+ - lon_0: Central meridian
+ - k_0: Scale factor
+ \par Example
+ \image html ex_gstmerc.gif
+ */
+ template <typename CalculationType, typename Parameters>
+ struct gstmerc_spheroid : public detail::gstmerc::base_gstmerc_spheroid<CalculationType, Parameters>
+ {
+ inline gstmerc_spheroid(const Parameters& par) : detail::gstmerc::base_gstmerc_spheroid<CalculationType, Parameters>(par)
+ {
+ detail::gstmerc::setup_gstmerc(this->m_par, this->m_proj_parm);
+ }
+ };
+
+ #ifndef DOXYGEN_NO_DETAIL
+ namespace detail
+ {
+
+ // Static projection
+ BOOST_GEOMETRY_PROJECTIONS_DETAIL_STATIC_PROJECTION(srs::par4::gstmerc, gstmerc_spheroid, gstmerc_spheroid)
+
+ // Factory entry(s)
+ template <typename CalculationType, typename Parameters>
+ class gstmerc_entry : public detail::factory_entry<CalculationType, Parameters>
+ {
+ public :
+ virtual base_v<CalculationType, Parameters>* create_new(const Parameters& par) const
+ {
+ return new base_v_fi<gstmerc_spheroid<CalculationType, Parameters>, CalculationType, Parameters>(par);
+ }
+ };
+
+ template <typename CalculationType, typename Parameters>
+ inline void gstmerc_init(detail::base_factory<CalculationType, Parameters>& factory)
+ {
+ factory.add_to_factory("gstmerc", new gstmerc_entry<CalculationType, Parameters>);
+ }
+
+ } // namespace detail
+ #endif // doxygen
+
+} // namespace projections
+
+}} // namespace boost::geometry
+
+#endif // BOOST_GEOMETRY_PROJECTIONS_GSTMERC_HPP
+