230 lines
8.0 KiB
C++
230 lines
8.0 KiB
C++
// Boost.Geometry - gis-projections (based on PROJ4)
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// Copyright (c) 2008-2015 Barend Gehrels, Amsterdam, the Netherlands.
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// This file was modified by Oracle on 2017, 2018, 2019.
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// Modifications copyright (c) 2017-2019, Oracle and/or its affiliates.
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// Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle.
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// Use, modification and distribution is subject to the Boost Software License,
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// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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// This file is converted from PROJ4, http://trac.osgeo.org/proj
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// PROJ4 is originally written by Gerald Evenden (then of the USGS)
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// PROJ4 is maintained by Frank Warmerdam
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// PROJ4 is converted to Boost.Geometry by Barend Gehrels
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// Last updated version of proj: 5.0.0
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// Original copyright notice:
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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#ifndef BOOST_GEOMETRY_PROJECTIONS_BACON_HPP
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#define BOOST_GEOMETRY_PROJECTIONS_BACON_HPP
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#include <boost/geometry/util/math.hpp>
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#include <boost/geometry/srs/projections/impl/base_static.hpp>
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#include <boost/geometry/srs/projections/impl/base_dynamic.hpp>
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#include <boost/geometry/srs/projections/impl/projects.hpp>
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#include <boost/geometry/srs/projections/impl/factory_entry.hpp>
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namespace boost { namespace geometry
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{
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namespace projections
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{
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#ifndef DOXYGEN_NO_DETAIL
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namespace detail { namespace bacon
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{
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//static const double half_pi_sqr = 2.46740110027233965467;
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static const double epsilon = 1e-10;
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struct par_bacon
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{
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bool bacn;
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bool ortl;
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};
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template <typename T, typename Parameters>
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struct base_bacon_spheroid
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{
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par_bacon m_proj_parm;
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// FORWARD(s_forward) spheroid
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// Project coordinates from geographic (lon, lat) to cartesian (x, y)
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inline void fwd(Parameters const& , T const& lp_lon, T const& lp_lat, T& xy_x, T& xy_y) const
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{
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static const T half_pi = detail::half_pi<T>();
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static const T half_pi_sqr = detail::half_pi_sqr<T>();
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T ax, f;
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xy_y = this->m_proj_parm.bacn ? half_pi * sin(lp_lat) : lp_lat;
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if ((ax = fabs(lp_lon)) >= epsilon) {
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if (this->m_proj_parm.ortl && ax >= half_pi)
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xy_x = sqrt(half_pi_sqr - lp_lat * lp_lat + epsilon) + ax - half_pi;
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else {
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f = 0.5 * (half_pi_sqr / ax + ax);
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xy_x = ax - f + sqrt(f * f - xy_y * xy_y);
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}
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if (lp_lon < 0.) xy_x = - xy_x;
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} else
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xy_x = 0.;
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}
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static inline std::string get_name()
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{
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return "bacon_spheroid";
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}
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};
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// Apian Globular I
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template <typename Parameters>
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inline void setup_apian(Parameters& par, par_bacon& proj_parm)
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{
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proj_parm.bacn = proj_parm.ortl = false;
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par.es = 0.;
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}
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// Ortelius Oval
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template <typename Parameters>
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inline void setup_ortel(Parameters& par, par_bacon& proj_parm)
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{
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proj_parm.bacn = false;
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proj_parm.ortl = true;
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par.es = 0.;
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}
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// Bacon Globular
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template <typename Parameters>
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inline void setup_bacon(Parameters& par, par_bacon& proj_parm)
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{
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proj_parm.bacn = true;
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proj_parm.ortl = false;
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par.es = 0.;
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}
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}} // namespace detail::bacon
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#endif // doxygen
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/*!
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\brief Apian Globular I projection
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\ingroup projections
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\tparam Geographic latlong point type
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\tparam Cartesian xy point type
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\tparam Parameters parameter type
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\par Projection characteristics
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- Miscellaneous
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- Spheroid
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- no inverse
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\par Example
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\image html ex_apian.gif
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*/
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template <typename T, typename Parameters>
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struct apian_spheroid : public detail::bacon::base_bacon_spheroid<T, Parameters>
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{
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template <typename Params>
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inline apian_spheroid(Params const& , Parameters & par)
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{
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detail::bacon::setup_apian(par, this->m_proj_parm);
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}
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};
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/*!
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\brief Ortelius Oval projection
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\ingroup projections
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\tparam Geographic latlong point type
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\tparam Cartesian xy point type
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\tparam Parameters parameter type
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\par Projection characteristics
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- Miscellaneous
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- Spheroid
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- no inverse
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\par Example
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\image html ex_ortel.gif
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*/
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template <typename T, typename Parameters>
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struct ortel_spheroid : public detail::bacon::base_bacon_spheroid<T, Parameters>
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{
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template <typename Params>
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inline ortel_spheroid(Params const& , Parameters & par)
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{
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detail::bacon::setup_ortel(par, this->m_proj_parm);
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}
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};
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/*!
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\brief Bacon Globular projection
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\ingroup projections
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\tparam Geographic latlong point type
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\tparam Cartesian xy point type
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\tparam Parameters parameter type
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\par Projection characteristics
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- Miscellaneous
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- Spheroid
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- no inverse
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\par Example
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\image html ex_bacon.gif
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*/
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template <typename T, typename Parameters>
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struct bacon_spheroid : public detail::bacon::base_bacon_spheroid<T, Parameters>
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{
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template <typename Params>
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inline bacon_spheroid(Params const& , Parameters & par)
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{
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detail::bacon::setup_bacon(par, this->m_proj_parm);
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}
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};
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#ifndef DOXYGEN_NO_DETAIL
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namespace detail
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{
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// Static projection
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BOOST_GEOMETRY_PROJECTIONS_DETAIL_STATIC_PROJECTION_F(srs::spar::proj_apian, apian_spheroid)
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BOOST_GEOMETRY_PROJECTIONS_DETAIL_STATIC_PROJECTION_F(srs::spar::proj_bacon, bacon_spheroid)
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BOOST_GEOMETRY_PROJECTIONS_DETAIL_STATIC_PROJECTION_F(srs::spar::proj_ortel, ortel_spheroid)
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// Factory entry(s)
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BOOST_GEOMETRY_PROJECTIONS_DETAIL_FACTORY_ENTRY_F(apian_entry, apian_spheroid)
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BOOST_GEOMETRY_PROJECTIONS_DETAIL_FACTORY_ENTRY_F(ortel_entry, ortel_spheroid)
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BOOST_GEOMETRY_PROJECTIONS_DETAIL_FACTORY_ENTRY_F(bacon_entry, bacon_spheroid)
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BOOST_GEOMETRY_PROJECTIONS_DETAIL_FACTORY_INIT_BEGIN(bacon_init)
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{
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BOOST_GEOMETRY_PROJECTIONS_DETAIL_FACTORY_INIT_ENTRY(apian, apian_entry)
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BOOST_GEOMETRY_PROJECTIONS_DETAIL_FACTORY_INIT_ENTRY(ortel, ortel_entry)
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BOOST_GEOMETRY_PROJECTIONS_DETAIL_FACTORY_INIT_ENTRY(bacon, bacon_entry)
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}
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} // namespace detail
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#endif // doxygen
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} // namespace projections
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}} // namespace boost::geometry
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#endif // BOOST_GEOMETRY_PROJECTIONS_BACON_HPP
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