// Boost.Geometry
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// Copyright (c) 2018 Adeel Ahmad, Islamabad, Pakistan.
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// Contributed and/or modified by Adeel Ahmad, as part of Google Summer of Code 2018 program.
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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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#ifndef BOOST_GEOMETRY_STRATEGIES_GEOGRAPHIC_KARNEY_HPP
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#define BOOST_GEOMETRY_STRATEGIES_GEOGRAPHIC_KARNEY_HPP
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#include <boost/geometry/strategies/geographic/distance.hpp>
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#include <boost/geometry/strategies/geographic/parameters.hpp>
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namespace boost { namespace geometry
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{
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namespace strategy { namespace distance
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{
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/*!
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\brief The solution of the inverse problem of geodesics on latlong coordinates,
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after Karney (2011).
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\ingroup distance
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\tparam Spheroid The reference spheroid model
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\tparam CalculationType \tparam_calculation
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\author See
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- Charles F.F Karney, Algorithms for geodesics, 2011
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https://arxiv.org/pdf/1109.4448.pdf
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*/
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template
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<
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typename Spheroid = srs::spheroid<double>,
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typename CalculationType = void
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>
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class karney
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: public strategy::distance::geographic
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<
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strategy::karney, Spheroid, CalculationType
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>
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{
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typedef strategy::distance::geographic
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<
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strategy::karney, Spheroid, CalculationType
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> base_type;
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public:
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inline karney()
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: base_type()
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{}
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explicit inline karney(Spheroid const& spheroid)
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: base_type(spheroid)
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{}
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};
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#ifndef DOXYGEN_NO_STRATEGY_SPECIALIZATIONS
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namespace services
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{
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template <typename Spheroid, typename CalculationType>
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struct tag<karney<Spheroid, CalculationType> >
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{
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typedef strategy_tag_distance_point_point type;
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};
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template <typename Spheroid, typename CalculationType, typename P1, typename P2>
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struct return_type<karney<Spheroid, CalculationType>, P1, P2>
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: karney<Spheroid, CalculationType>::template calculation_type<P1, P2>
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{};
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template <typename Spheroid, typename CalculationType>
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struct comparable_type<karney<Spheroid, CalculationType> >
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{
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typedef karney<Spheroid, CalculationType> type;
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};
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template <typename Spheroid, typename CalculationType>
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struct get_comparable<karney<Spheroid, CalculationType> >
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{
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static inline karney<Spheroid, CalculationType> apply(karney<Spheroid, CalculationType> const& input)
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{
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return input;
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}
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};
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template <typename Spheroid, typename CalculationType, typename P1, typename P2>
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struct result_from_distance<karney<Spheroid, CalculationType>, P1, P2 >
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{
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template <typename T>
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static inline typename return_type<karney<Spheroid, CalculationType>, P1, P2>::type
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apply(karney<Spheroid, CalculationType> const& , T const& value)
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{
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return value;
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}
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};
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} // namespace services
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#endif // DOXYGEN_NO_STRATEGY_SPECIALIZATIONS
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}} // namespace strategy::distance
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}} // namespace boost::geometry
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#endif // BOOST_GEOMETRY_STRATEGIES_GEOGRAPHIC_KARNEY_HPP
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