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+#ifndef BOOST_GEOMETRY_PROJECTIONS_BIPC_HPP
+#define BOOST_GEOMETRY_PROJECTIONS_BIPC_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/math/special_functions/hypot.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>
+
+namespace boost { namespace geometry
+{
+
+namespace srs { namespace par4
+{
+ struct bipc {};
+
+}} //namespace srs::par4
+
+namespace projections
+{
+ #ifndef DOXYGEN_NO_DETAIL
+ namespace detail { namespace bipc
+ {
+
+ static const double EPS = 1e-10;
+ static const double EPS10 = 1e-10;
+ static const double ONEEPS = 1.000000001;
+ static const int NITER = 10;
+ static const double lamB = -.34894976726250681539;
+ static const double n = .63055844881274687180;
+ static const double F = 1.89724742567461030582;
+ static const double Azab = .81650043674686363166;
+ static const double Azba = 1.82261843856185925133;
+ static const double T = 1.27246578267089012270;
+ static const double rhoc = 1.20709121521568721927;
+ static const double cAzc = .69691523038678375519;
+ static const double sAzc = .71715351331143607555;
+ static const double C45 = .70710678118654752469;
+ static const double S45 = .70710678118654752410;
+ static const double C20 = .93969262078590838411;
+ static const double S20 = -.34202014332566873287;
+ static const double R110 = 1.91986217719376253360;
+ static const double R104 = 1.81514242207410275904;
+
+ struct par_bipc
+ {
+ int noskew;
+ };
+
+ // template class, using CRTP to implement forward/inverse
+ template <typename CalculationType, typename Parameters>
+ struct base_bipc_spheroid : public base_t_fi<base_bipc_spheroid<CalculationType, Parameters>,
+ CalculationType, Parameters>
+ {
+
+ typedef CalculationType geographic_type;
+ typedef CalculationType cartesian_type;
+
+ par_bipc m_proj_parm;
+
+ inline base_bipc_spheroid(const Parameters& par)
+ : base_t_fi<base_bipc_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>();
+ static const CalculationType ONEPI = detail::ONEPI<CalculationType>();
+
+ CalculationType cphi, sphi, tphi, t, al, Az, z, Av, cdlam, sdlam, r;
+ int tag;
+
+ cphi = cos(lp_lat);
+ sphi = sin(lp_lat);
+ cdlam = cos(sdlam = lamB - lp_lon);
+ sdlam = sin(sdlam);
+ if (fabs(fabs(lp_lat) - HALFPI) < EPS10) {
+ Az = lp_lat < 0. ? ONEPI : 0.;
+ tphi = HUGE_VAL;
+ } else {
+ tphi = sphi / cphi;
+ Az = atan2(sdlam , C45 * (tphi - cdlam));
+ }
+ if( (tag = (Az > Azba)) ) {
+ cdlam = cos(sdlam = lp_lon + R110);
+ sdlam = sin(sdlam);
+ z = S20 * sphi + C20 * cphi * cdlam;
+ if (fabs(z) > 1.) {
+ if (fabs(z) > ONEEPS)
+ BOOST_THROW_EXCEPTION( projection_exception(-20) );
+ else
+ z = z < 0. ? -1. : 1.;
+ } else
+ z = acos(z);
+ if (tphi != HUGE_VAL)
+ Az = atan2(sdlam, (C20 * tphi - S20 * cdlam));
+ Av = Azab;
+ xy_y = rhoc;
+ } else {
+ z = S45 * (sphi + cphi * cdlam);
+ if (fabs(z) > 1.) {
+ if (fabs(z) > ONEEPS)
+ BOOST_THROW_EXCEPTION( projection_exception(-20) );
+ else
+ z = z < 0. ? -1. : 1.;
+ } else
+ z = acos(z);
+ Av = Azba;
+ xy_y = -rhoc;
+ }
+ if (z < 0.) BOOST_THROW_EXCEPTION( projection_exception(-20) );
+ r = F * (t = pow(tan(.5 * z), n));
+ if ((al = .5 * (R104 - z)) < 0.)
+ BOOST_THROW_EXCEPTION( projection_exception(-20) );
+ al = (t + pow(al, n)) / T;
+ if (fabs(al) > 1.) {
+ if (fabs(al) > ONEEPS)
+ BOOST_THROW_EXCEPTION( projection_exception(-20) );
+ else
+ al = al < 0. ? -1. : 1.;
+ } else
+ al = acos(al);
+ if (fabs(t = n * (Av - Az)) < al)
+ r /= cos(al + (tag ? t : -t));
+ xy_x = r * sin(t);
+ xy_y += (tag ? -r : r) * cos(t);
+ if (this->m_proj_parm.noskew) {
+ t = xy_x;
+ xy_x = -xy_x * cAzc - xy_y * sAzc;
+ xy_y = -xy_y * cAzc + t * sAzc;
+ }
+ }
+
+ // 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 t, r, rp, rl, al, z, fAz, Az, s, c, Av;
+ int neg, i;
+
+ if (this->m_proj_parm.noskew) {
+ t = xy_x;
+ xy_x = -xy_x * cAzc + xy_y * sAzc;
+ xy_y = -xy_y * cAzc - t * sAzc;
+ }
+ if( (neg = (xy_x < 0.)) ) {
+ xy_y = rhoc - xy_y;
+ s = S20;
+ c = C20;
+ Av = Azab;
+ } else {
+ xy_y += rhoc;
+ s = S45;
+ c = C45;
+ Av = Azba;
+ }
+ rl = rp = r = boost::math::hypot(xy_x, xy_y);
+ fAz = fabs(Az = atan2(xy_x, xy_y));
+ for (i = NITER; i ; --i) {
+ z = 2. * atan(pow(r / F,1 / n));
+ al = acos((pow(tan(.5 * z), n) +
+ pow(tan(.5 * (R104 - z)), n)) / T);
+ if (fAz < al)
+ r = rp * cos(al + (neg ? Az : -Az));
+ if (fabs(rl - r) < EPS)
+ break;
+ rl = r;
+ }
+ if (! i)
+ BOOST_THROW_EXCEPTION( projection_exception(-20) );
+ Az = Av - Az / n;
+ lp_lat = asin(s * cos(z) + c * sin(z) * cos(Az));
+ lp_lon = atan2(sin(Az), c / tan(z) - s * cos(Az));
+ if (neg)
+ lp_lon -= R110;
+ else
+ lp_lon = lamB - lp_lon;
+ }
+
+ static inline std::string get_name()
+ {
+ return "bipc_spheroid";
+ }
+
+ };
+
+ // Bipolar conic of western hemisphere
+ template <typename Parameters>
+ inline void setup_bipc(Parameters& par, par_bipc& proj_parm)
+ {
+ proj_parm.noskew = pj_param(par.params, "bns").i;
+ par.es = 0.;
+ }
+
+ }} // namespace detail::bipc
+ #endif // doxygen
+
+ /*!
+ \brief Bipolar conic of western hemisphere projection
+ \ingroup projections
+ \tparam Geographic latlong point type
+ \tparam Cartesian xy point type
+ \tparam Parameters parameter type
+ \par Projection characteristics
+ - Conic
+ - Spheroid
+ \par Projection parameters
+ - ns (boolean)
+ \par Example
+ \image html ex_bipc.gif
+ */
+ template <typename CalculationType, typename Parameters>
+ struct bipc_spheroid : public detail::bipc::base_bipc_spheroid<CalculationType, Parameters>
+ {
+ inline bipc_spheroid(const Parameters& par) : detail::bipc::base_bipc_spheroid<CalculationType, Parameters>(par)
+ {
+ detail::bipc::setup_bipc(this->m_par, this->m_proj_parm);
+ }
+ };
+
+ #ifndef DOXYGEN_NO_DETAIL
+ namespace detail
+ {
+
+ // Static projection
+ BOOST_GEOMETRY_PROJECTIONS_DETAIL_STATIC_PROJECTION(srs::par4::bipc, bipc_spheroid, bipc_spheroid)
+
+ // Factory entry(s)
+ template <typename CalculationType, typename Parameters>
+ class bipc_entry : public detail::factory_entry<CalculationType, Parameters>
+ {
+ public :
+ virtual base_v<CalculationType, Parameters>* create_new(const Parameters& par) const
+ {
+ return new base_v_fi<bipc_spheroid<CalculationType, Parameters>, CalculationType, Parameters>(par);
+ }
+ };
+
+ template <typename CalculationType, typename Parameters>
+ inline void bipc_init(detail::base_factory<CalculationType, Parameters>& factory)
+ {
+ factory.add_to_factory("bipc", new bipc_entry<CalculationType, Parameters>);
+ }
+
+ } // namespace detail
+ #endif // doxygen
+
+} // namespace projections
+
+}} // namespace boost::geometry
+
+#endif // BOOST_GEOMETRY_PROJECTIONS_BIPC_HPP
+