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+#ifndef BOOST_GEOMETRY_PROJECTIONS_CEA_HPP
+#define BOOST_GEOMETRY_PROJECTIONS_CEA_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/util/math.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/projects.hpp>
+#include <boost/geometry/srs/projections/impl/factory_entry.hpp>
+#include <boost/geometry/srs/projections/impl/pj_auth.hpp>
+#include <boost/geometry/srs/projections/impl/pj_qsfn.hpp>
+
+namespace boost { namespace geometry
+{
+
+namespace srs { namespace par4
+{
+ struct cea {};
+
+}} //namespace srs::par4
+
+namespace projections
+{
+ #ifndef DOXYGEN_NO_DETAIL
+ namespace detail { namespace cea
+ {
+
+ static const double EPS = 1e-10;
+
+ template <typename T>
+ struct par_cea
+ {
+ T qp;
+ T apa[APA_SIZE];
+ };
+
+ // template class, using CRTP to implement forward/inverse
+ template <typename CalculationType, typename Parameters>
+ struct base_cea_ellipsoid : public base_t_fi<base_cea_ellipsoid<CalculationType, Parameters>,
+ CalculationType, Parameters>
+ {
+
+ typedef CalculationType geographic_type;
+ typedef CalculationType cartesian_type;
+
+ par_cea<CalculationType> m_proj_parm;
+
+ inline base_cea_ellipsoid(const Parameters& par)
+ : base_t_fi<base_cea_ellipsoid<CalculationType, Parameters>,
+ CalculationType, Parameters>(*this, par) {}
+
+ // FORWARD(e_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
+ {
+ xy_x = this->m_par.k0 * lp_lon;
+ xy_y = .5 * pj_qsfn(sin(lp_lat), this->m_par.e, this->m_par.one_es) / this->m_par.k0;
+ }
+
+ // INVERSE(e_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
+ {
+ lp_lat = pj_authlat(asin( 2. * xy_y * this->m_par.k0 / this->m_proj_parm.qp), this->m_proj_parm.apa);
+ lp_lon = xy_x / this->m_par.k0;
+ }
+
+ static inline std::string get_name()
+ {
+ return "cea_ellipsoid";
+ }
+
+ };
+
+ // template class, using CRTP to implement forward/inverse
+ template <typename CalculationType, typename Parameters>
+ struct base_cea_spheroid : public base_t_fi<base_cea_spheroid<CalculationType, Parameters>,
+ CalculationType, Parameters>
+ {
+
+ typedef CalculationType geographic_type;
+ typedef CalculationType cartesian_type;
+
+ par_cea<CalculationType> m_proj_parm;
+
+ inline base_cea_spheroid(const Parameters& par)
+ : base_t_fi<base_cea_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
+ {
+ xy_x = this->m_par.k0 * lp_lon;
+ xy_y = sin(lp_lat) / this->m_par.k0;
+ }
+
+ // 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
+ {
+ static const CalculationType HALFPI = detail::HALFPI<CalculationType>();
+
+ CalculationType t;
+
+ if ((t = fabs(xy_y *= this->m_par.k0)) - EPS <= 1.) {
+ if (t >= 1.)
+ lp_lat = xy_y < 0. ? -HALFPI : HALFPI;
+ else
+ lp_lat = asin(xy_y);
+ lp_lon = xy_x / this->m_par.k0;
+ } else
+ BOOST_THROW_EXCEPTION( projection_exception(-20) );
+ }
+
+ static inline std::string get_name()
+ {
+ return "cea_spheroid";
+ }
+
+ };
+
+ // Equal Area Cylindrical
+ template <typename Parameters, typename T>
+ inline void setup_cea(Parameters& par, par_cea<T>& proj_parm)
+ {
+ T t = 0;
+
+ if (pj_param(par.params, "tlat_ts").i &&
+ (par.k0 = cos(t = pj_param(par.params, "rlat_ts").f)) < 0.)
+ BOOST_THROW_EXCEPTION( projection_exception(-24) );
+ if (par.es) {
+ t = sin(t);
+ par.k0 /= sqrt(1. - par.es * t * t);
+ par.e = sqrt(par.es);
+ if (!pj_authset(par.es, proj_parm.apa))
+ BOOST_THROW_EXCEPTION( projection_exception(0) );
+ proj_parm.qp = pj_qsfn(1., par.e, par.one_es);
+ } else {
+ }
+ }
+
+ }} // namespace detail::cea
+ #endif // doxygen
+
+ /*!
+ \brief Equal Area Cylindrical 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_ts: Latitude of true scale (degrees)
+ \par Example
+ \image html ex_cea.gif
+ */
+ template <typename CalculationType, typename Parameters>
+ struct cea_ellipsoid : public detail::cea::base_cea_ellipsoid<CalculationType, Parameters>
+ {
+ inline cea_ellipsoid(const Parameters& par) : detail::cea::base_cea_ellipsoid<CalculationType, Parameters>(par)
+ {
+ detail::cea::setup_cea(this->m_par, this->m_proj_parm);
+ }
+ };
+
+ /*!
+ \brief Equal Area Cylindrical 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_ts: Latitude of true scale (degrees)
+ \par Example
+ \image html ex_cea.gif
+ */
+ template <typename CalculationType, typename Parameters>
+ struct cea_spheroid : public detail::cea::base_cea_spheroid<CalculationType, Parameters>
+ {
+ inline cea_spheroid(const Parameters& par) : detail::cea::base_cea_spheroid<CalculationType, Parameters>(par)
+ {
+ detail::cea::setup_cea(this->m_par, this->m_proj_parm);
+ }
+ };
+
+ #ifndef DOXYGEN_NO_DETAIL
+ namespace detail
+ {
+
+ // Static projection
+ BOOST_GEOMETRY_PROJECTIONS_DETAIL_STATIC_PROJECTION(srs::par4::cea, cea_spheroid, cea_ellipsoid)
+
+ // Factory entry(s)
+ template <typename CalculationType, typename Parameters>
+ class cea_entry : public detail::factory_entry<CalculationType, Parameters>
+ {
+ public :
+ virtual base_v<CalculationType, Parameters>* create_new(const Parameters& par) const
+ {
+ if (par.es)
+ return new base_v_fi<cea_ellipsoid<CalculationType, Parameters>, CalculationType, Parameters>(par);
+ else
+ return new base_v_fi<cea_spheroid<CalculationType, Parameters>, CalculationType, Parameters>(par);
+ }
+ };
+
+ template <typename CalculationType, typename Parameters>
+ inline void cea_init(detail::base_factory<CalculationType, Parameters>& factory)
+ {
+ factory.add_to_factory("cea", new cea_entry<CalculationType, Parameters>);
+ }
+
+ } // namespace detail
+ #endif // doxygen
+
+} // namespace projections
+
+}} // namespace boost::geometry
+
+#endif // BOOST_GEOMETRY_PROJECTIONS_CEA_HPP
+