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+#ifndef BOOST_GEOMETRY_PROJECTIONS_AIRY_HPP
+#define BOOST_GEOMETRY_PROJECTIONS_AIRY_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:
+
+// Purpose: Implementation of the airy (Airy) projection.
+// Author: Gerald Evenden
+// Copyright (c) 1995, Gerald Evenden
+
+// 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/par4.hpp> // airy tag
+
+namespace boost { namespace geometry
+{
+
+namespace srs { namespace par4
+{
+ // already defined in par4.hpp as ellps name
+ //struct airy {};
+
+}} //namespace srs::par4
+
+namespace projections
+{
+ #ifndef DOXYGEN_NO_DETAIL
+ namespace detail { namespace airy
+ {
+
+ static const double EPS = 1.e-10;
+ static const int N_POLE = 0;
+ static const int S_POLE = 1;
+ static const int EQUIT = 2;
+ static const int OBLIQ = 3;
+
+ template <typename T>
+ struct par_airy
+ {
+ T p_halfpi;
+ T sinph0;
+ T cosph0;
+ T Cb;
+ int mode;
+ int no_cut; /* do not cut at hemisphere limit */
+ };
+
+ // template class, using CRTP to implement forward/inverse
+ template <typename CalculationType, typename Parameters>
+ struct base_airy_spheroid : public base_t_f<base_airy_spheroid<CalculationType, Parameters>,
+ CalculationType, Parameters>
+ {
+
+ typedef CalculationType geographic_type;
+ typedef CalculationType cartesian_type;
+
+ par_airy<CalculationType> m_proj_parm;
+
+ inline base_airy_spheroid(const Parameters& par)
+ : base_t_f<base_airy_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
+ {
+ static const CalculationType HALFPI = detail::HALFPI<CalculationType>();
+
+ CalculationType sinlam, coslam, cosphi, sinphi, t, s, Krho, cosz;
+
+ sinlam = sin(lp_lon);
+ coslam = cos(lp_lon);
+ switch (this->m_proj_parm.mode) {
+ case EQUIT:
+ case OBLIQ:
+ sinphi = sin(lp_lat);
+ cosphi = cos(lp_lat);
+ cosz = cosphi * coslam;
+ if (this->m_proj_parm.mode == OBLIQ)
+ cosz = this->m_proj_parm.sinph0 * sinphi + this->m_proj_parm.cosph0 * cosz;
+ if (!this->m_proj_parm.no_cut && cosz < -EPS)
+ BOOST_THROW_EXCEPTION( projection_exception(-20) );
+ if (fabs(s = 1. - cosz) > EPS) {
+ t = 0.5 * (1. + cosz);
+ Krho = -log(t)/s - this->m_proj_parm.Cb / t;
+ } else
+ Krho = 0.5 - this->m_proj_parm.Cb;
+ xy_x = Krho * cosphi * sinlam;
+ if (this->m_proj_parm.mode == OBLIQ)
+ xy_y = Krho * (this->m_proj_parm.cosph0 * sinphi -
+ this->m_proj_parm.sinph0 * cosphi * coslam);
+ else
+ xy_y = Krho * sinphi;
+ break;
+ case S_POLE:
+ case N_POLE:
+ lp_lat = fabs(this->m_proj_parm.p_halfpi - lp_lat);
+ if (!this->m_proj_parm.no_cut && (lp_lat - EPS) > HALFPI)
+ BOOST_THROW_EXCEPTION( projection_exception(-20) );
+ if ((lp_lat *= 0.5) > EPS) {
+ t = tan(lp_lat);
+ Krho = -2.*(log(cos(lp_lat)) / t + t * this->m_proj_parm.Cb);
+ xy_x = Krho * sinlam;
+ xy_y = Krho * coslam;
+ if (this->m_proj_parm.mode == N_POLE)
+ xy_y = -xy_y;
+ } else
+ xy_x = xy_y = 0.;
+ }
+ }
+
+ static inline std::string get_name()
+ {
+ return "airy_spheroid";
+ }
+
+ };
+
+ // Airy
+ template <typename Parameters, typename T>
+ inline void setup_airy(Parameters& par, par_airy<T>& proj_parm)
+ {
+ static const T HALFPI = detail::HALFPI<T>();
+
+ T beta;
+
+ proj_parm.no_cut = pj_param(par.params, "bno_cut").i;
+ beta = 0.5 * (HALFPI - pj_param(par.params, "rlat_b").f);
+ if (fabs(beta) < EPS)
+ proj_parm.Cb = -0.5;
+ else {
+ proj_parm.Cb = 1./tan(beta);
+ proj_parm.Cb *= proj_parm.Cb * log(cos(beta));
+ }
+ if (fabs(fabs(par.phi0) - HALFPI) < EPS)
+ if (par.phi0 < 0.) {
+ proj_parm.p_halfpi = -HALFPI;
+ proj_parm.mode = S_POLE;
+ } else {
+ proj_parm.p_halfpi = HALFPI;
+ proj_parm.mode = N_POLE;
+ }
+ else {
+ if (fabs(par.phi0) < EPS)
+ proj_parm.mode = EQUIT;
+ else {
+ proj_parm.mode = OBLIQ;
+ proj_parm.sinph0 = sin(par.phi0);
+ proj_parm.cosph0 = cos(par.phi0);
+ }
+ }
+ par.es = 0.;
+ }
+
+ }} // namespace detail::airy
+ #endif // doxygen
+
+ /*!
+ \brief Airy projection
+ \ingroup projections
+ \tparam Geographic latlong point type
+ \tparam Cartesian xy point type
+ \tparam Parameters parameter type
+ \par Projection characteristics
+ - Miscellaneous
+ - Spheroid
+ - no inverse
+ \par Projection parameters
+ - no_cut: Do not cut at hemisphere limit (boolean)
+ - lat_b (degrees)
+ \par Example
+ \image html ex_airy.gif
+ */
+ template <typename CalculationType, typename Parameters>
+ struct airy_spheroid : public detail::airy::base_airy_spheroid<CalculationType, Parameters>
+ {
+ inline airy_spheroid(const Parameters& par) : detail::airy::base_airy_spheroid<CalculationType, Parameters>(par)
+ {
+ detail::airy::setup_airy(this->m_par, this->m_proj_parm);
+ }
+ };
+
+ #ifndef DOXYGEN_NO_DETAIL
+ namespace detail
+ {
+
+ // Static projection
+ BOOST_GEOMETRY_PROJECTIONS_DETAIL_STATIC_PROJECTION(srs::par4::airy, airy_spheroid, airy_spheroid)
+
+ // Factory entry(s)
+ template <typename CalculationType, typename Parameters>
+ class airy_entry : public detail::factory_entry<CalculationType, Parameters>
+ {
+ public :
+ virtual base_v<CalculationType, Parameters>* create_new(const Parameters& par) const
+ {
+ return new base_v_f<airy_spheroid<CalculationType, Parameters>, CalculationType, Parameters>(par);
+ }
+ };
+
+ template <typename CalculationType, typename Parameters>
+ inline void airy_init(detail::base_factory<CalculationType, Parameters>& factory)
+ {
+ factory.add_to_factory("airy", new airy_entry<CalculationType, Parameters>);
+ }
+
+ } // namespace detail
+ #endif // doxygen
+
+} // namespace projections
+
+}} // namespace boost::geometry
+
+#endif // BOOST_GEOMETRY_PROJECTIONS_AIRY_HPP
+