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+#ifndef BOOST_GEOMETRY_PROJECTIONS_IMW_P_HPP
+#define BOOST_GEOMETRY_PROJECTIONS_IMW_P_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_mlfn.hpp>
+
+namespace boost { namespace geometry
+{
+
+namespace srs { namespace par4
+{
+ struct imw_p {};
+
+}} //namespace srs::par4
+
+namespace projections
+{
+ #ifndef DOXYGEN_NO_DETAIL
+ namespace detail { namespace imw_p
+ {
+
+ static const double TOL = 1e-10;
+ static const double EPS = 1e-10;
+
+ template <typename T>
+ struct XY { T x, y; }; // specific for IMW_P
+
+ template <typename T>
+ struct par_imw_p
+ {
+ T P, Pp, Q, Qp, R_1, R_2, sphi_1, sphi_2, C2;
+ T phi_1, phi_2, lam_1;
+ T en[EN_SIZE];
+ int mode; /* = 0, phi_1 and phi_2 != 0, = 1, phi_1 = 0, = -1 phi_2 = 0 */
+ };
+
+ template <typename Parameters, typename T>
+ inline int
+ phi12(Parameters& par, par_imw_p<T>& proj_parm, T *del, T *sig)
+ {
+ int err = 0;
+
+ if (!pj_param(par.params, "tlat_1").i ||
+ !pj_param(par.params, "tlat_2").i) {
+ err = -41;
+ } else {
+ proj_parm.phi_1 = pj_param(par.params, "rlat_1").f;
+ proj_parm.phi_2 = pj_param(par.params, "rlat_2").f;
+ *del = 0.5 * (proj_parm.phi_2 - proj_parm.phi_1);
+ *sig = 0.5 * (proj_parm.phi_2 + proj_parm.phi_1);
+ err = (fabs(*del) < EPS || fabs(*sig) < EPS) ? -42 : 0;
+ }
+ return err;
+ }
+ template <typename Parameters, typename T>
+ inline XY<T>
+ loc_for(T const& lp_lam, T const& lp_phi, Parameters const& par, par_imw_p<T> const& proj_parm, T *yc)
+ {
+ XY<T> xy;
+
+ if (! lp_phi) {
+ xy.x = lp_lam;
+ xy.y = 0.;
+ } else {
+ T xa, ya, xb, yb, xc, D, B, m, sp, t, R, C;
+
+ sp = sin(lp_phi);
+ m = pj_mlfn(lp_phi, sp, cos(lp_phi), proj_parm.en);
+ xa = proj_parm.Pp + proj_parm.Qp * m;
+ ya = proj_parm.P + proj_parm.Q * m;
+ R = 1. / (tan(lp_phi) * sqrt(1. - par.es * sp * sp));
+ C = sqrt(R * R - xa * xa);
+ if (lp_phi < 0.) C = - C;
+ C += ya - R;
+ if (proj_parm.mode < 0) {
+ xb = lp_lam;
+ yb = proj_parm.C2;
+ } else {
+ t = lp_lam * proj_parm.sphi_2;
+ xb = proj_parm.R_2 * sin(t);
+ yb = proj_parm.C2 + proj_parm.R_2 * (1. - cos(t));
+ }
+ if (proj_parm.mode > 0) {
+ xc = lp_lam;
+ *yc = 0.;
+ } else {
+ t = lp_lam * proj_parm.sphi_1;
+ xc = proj_parm.R_1 * sin(t);
+ *yc = proj_parm.R_1 * (1. - cos(t));
+ }
+ D = (xb - xc)/(yb - *yc);
+ B = xc + D * (C + R - *yc);
+ xy.x = D * sqrt(R * R * (1 + D * D) - B * B);
+ if (lp_phi > 0)
+ xy.x = - xy.x;
+ xy.x = (B + xy.x) / (1. + D * D);
+ xy.y = sqrt(R * R - xy.x * xy.x);
+ if (lp_phi > 0)
+ xy.y = - xy.y;
+ xy.y += C + R;
+ }
+ return (xy);
+ }
+ template <typename Parameters, typename T>
+ inline void
+ xy(Parameters const& par, par_imw_p<T> const& proj_parm, T const& phi, T *x, T *y, T *sp, T *R)
+ {
+ T F;
+
+ *sp = sin(phi);
+ *R = 1./(tan(phi) * sqrt(1. - par.es * *sp * *sp ));
+ F = proj_parm.lam_1 * *sp;
+ *y = *R * (1 - cos(F));
+ *x = *R * sin(F);
+ }
+
+ // template class, using CRTP to implement forward/inverse
+ template <typename CalculationType, typename Parameters>
+ struct base_imw_p_ellipsoid : public base_t_fi<base_imw_p_ellipsoid<CalculationType, Parameters>,
+ CalculationType, Parameters>
+ {
+
+ typedef CalculationType geographic_type;
+ typedef CalculationType cartesian_type;
+
+ par_imw_p<CalculationType> m_proj_parm;
+
+ inline base_imw_p_ellipsoid(const Parameters& par)
+ : base_t_fi<base_imw_p_ellipsoid<CalculationType, Parameters>,
+ CalculationType, Parameters>(*this, par) {}
+
+ // FORWARD(e_forward) ellipsoid
+ // 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 yc = 0;
+ XY<CalculationType> xy = loc_for(lp_lon, lp_lat, this->m_par, m_proj_parm, &yc);
+ xy_x = xy.x; xy_y = xy.y;
+ }
+
+ // INVERSE(e_inverse) ellipsoid
+ // 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
+ {
+ XY<CalculationType> t;
+ CalculationType yc = 0;
+
+ lp_lat = this->m_proj_parm.phi_2;
+ lp_lon = xy_x / cos(lp_lat);
+ do {
+ t = loc_for(lp_lon, lp_lat, this->m_par, m_proj_parm, &yc);
+ lp_lat = ((lp_lat - this->m_proj_parm.phi_1) * (xy_y - yc) / (t.y - yc)) + this->m_proj_parm.phi_1;
+ lp_lon = lp_lon * xy_x / t.x;
+ } while (fabs(t.x - xy_x) > TOL || fabs(t.y - xy_y) > TOL);
+ }
+
+ static inline std::string get_name()
+ {
+ return "imw_p_ellipsoid";
+ }
+
+ };
+
+ // International Map of the World Polyconic
+ template <typename Parameters, typename T>
+ inline void setup_imw_p(Parameters& par, par_imw_p<T>& proj_parm)
+ {
+ T del, sig, s, t, x1, x2, T2, y1, m1, m2, y2;
+ int i;
+
+ if (!pj_enfn(par.es, proj_parm.en))
+ BOOST_THROW_EXCEPTION( projection_exception(0) );
+ if( (i = phi12(par, proj_parm, &del, &sig)) != 0)
+ BOOST_THROW_EXCEPTION( projection_exception(i) );
+ if (proj_parm.phi_2 < proj_parm.phi_1) { /* make sure proj_parm.phi_1 most southerly */
+ del = proj_parm.phi_1;
+ proj_parm.phi_1 = proj_parm.phi_2;
+ proj_parm.phi_2 = del;
+ }
+ if (pj_param(par.params, "tlon_1").i)
+ proj_parm.lam_1 = pj_param(par.params, "rlon_1").f;
+ else { /* use predefined based upon latitude */
+ sig = fabs(sig * geometry::math::r2d<T>());
+ if (sig <= 60) sig = 2.;
+ else if (sig <= 76) sig = 4.;
+ else sig = 8.;
+ proj_parm.lam_1 = sig * geometry::math::d2r<T>();
+ }
+ proj_parm.mode = 0;
+ if (proj_parm.phi_1) xy(par, proj_parm, proj_parm.phi_1, &x1, &y1, &proj_parm.sphi_1, &proj_parm.R_1);
+ else {
+ proj_parm.mode = 1;
+ y1 = 0.;
+ x1 = proj_parm.lam_1;
+ }
+ if (proj_parm.phi_2) xy(par, proj_parm, proj_parm.phi_2, &x2, &T2, &proj_parm.sphi_2, &proj_parm.R_2);
+ else {
+ proj_parm.mode = -1;
+ T2 = 0.;
+ x2 = proj_parm.lam_1;
+ }
+ m1 = pj_mlfn(proj_parm.phi_1, proj_parm.sphi_1, cos(proj_parm.phi_1), proj_parm.en);
+ m2 = pj_mlfn(proj_parm.phi_2, proj_parm.sphi_2, cos(proj_parm.phi_2), proj_parm.en);
+ t = m2 - m1;
+ s = x2 - x1;
+ y2 = sqrt(t * t - s * s) + y1;
+ proj_parm.C2 = y2 - T2;
+ t = 1. / t;
+ proj_parm.P = (m2 * y1 - m1 * y2) * t;
+ proj_parm.Q = (y2 - y1) * t;
+ proj_parm.Pp = (m2 * x1 - m1 * x2) * t;
+ proj_parm.Qp = (x2 - x1) * t;
+ }
+
+ }} // namespace detail::imw_p
+ #endif // doxygen
+
+ /*!
+ \brief International Map of the World Polyconic projection
+ \ingroup projections
+ \tparam Geographic latlong point type
+ \tparam Cartesian xy point type
+ \tparam Parameters parameter type
+ \par Projection characteristics
+ - Mod. Polyconic
+ - Ellipsoid
+ \par Projection parameters
+ - lat_1: Latitude of first standard parallel
+ - lat_2: Latitude of second standard parallel
+ - lon_1 (degrees)
+ \par Example
+ \image html ex_imw_p.gif
+ */
+ template <typename CalculationType, typename Parameters>
+ struct imw_p_ellipsoid : public detail::imw_p::base_imw_p_ellipsoid<CalculationType, Parameters>
+ {
+ inline imw_p_ellipsoid(const Parameters& par) : detail::imw_p::base_imw_p_ellipsoid<CalculationType, Parameters>(par)
+ {
+ detail::imw_p::setup_imw_p(this->m_par, this->m_proj_parm);
+ }
+ };
+
+ #ifndef DOXYGEN_NO_DETAIL
+ namespace detail
+ {
+
+ // Static projection
+ BOOST_GEOMETRY_PROJECTIONS_DETAIL_STATIC_PROJECTION(srs::par4::imw_p, imw_p_ellipsoid, imw_p_ellipsoid)
+
+ // Factory entry(s)
+ template <typename CalculationType, typename Parameters>
+ class imw_p_entry : public detail::factory_entry<CalculationType, Parameters>
+ {
+ public :
+ virtual base_v<CalculationType, Parameters>* create_new(const Parameters& par) const
+ {
+ return new base_v_fi<imw_p_ellipsoid<CalculationType, Parameters>, CalculationType, Parameters>(par);
+ }
+ };
+
+ template <typename CalculationType, typename Parameters>
+ inline void imw_p_init(detail::base_factory<CalculationType, Parameters>& factory)
+ {
+ factory.add_to_factory("imw_p", new imw_p_entry<CalculationType, Parameters>);
+ }
+
+ } // namespace detail
+ #endif // doxygen
+
+} // namespace projections
+
+}} // namespace boost::geometry
+
+#endif // BOOST_GEOMETRY_PROJECTIONS_IMW_P_HPP
+