92 lines
2.5 KiB
C++
92 lines
2.5 KiB
C++
// Boost.Geometry
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// Copyright (c) 2021, Oracle and/or its affiliates.
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// Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
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// Licensed under the Boost Software License version 1.0.
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// http://www.boost.org/users/license.html
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#ifndef BOOST_GEOMETRY_STRATEGIES_LINE_INTERPOLATE_SPHERICAL_HPP
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#define BOOST_GEOMETRY_STRATEGIES_LINE_INTERPOLATE_SPHERICAL_HPP
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#include <boost/geometry/strategies/detail.hpp>
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#include <boost/geometry/strategies/distance/detail.hpp>
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#include <boost/geometry/strategies/line_interpolate/services.hpp>
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#include <boost/geometry/strategies/spherical/distance_haversine.hpp>
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#include <boost/geometry/strategies/spherical/line_interpolate.hpp>
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namespace boost { namespace geometry
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{
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namespace strategies { namespace line_interpolate
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{
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template
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<
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typename RadiusTypeOrSphere = double,
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typename CalculationType = void
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>
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class spherical
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: public strategies::detail::spherical_base<RadiusTypeOrSphere>
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{
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using base_t = strategies::detail::spherical_base<RadiusTypeOrSphere>;
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public:
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spherical() = default;
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template <typename RadiusOrSphere>
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explicit spherical(RadiusOrSphere const& radius_or_sphere)
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: base_t(radius_or_sphere)
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{}
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template <typename Geometry1, typename Geometry2>
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auto distance(Geometry1 const&, Geometry2 const&,
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distance::detail::enable_if_pp_t<Geometry1, Geometry2> * = nullptr) const
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{
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return strategy::distance::haversine
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<
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typename base_t::radius_type, CalculationType
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>(base_t::radius());
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}
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template <typename Geometry>
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auto line_interpolate(Geometry const&) const
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{
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// NOTE: radius is ignored, but pass it just in case
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return strategy::line_interpolate::spherical<CalculationType>(base_t::radius());
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}
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};
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namespace services
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{
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template <typename Geometry>
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struct default_strategy<Geometry, spherical_equatorial_tag>
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{
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using type = strategies::line_interpolate::spherical<>;
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};
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template <typename CT, typename DS>
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struct strategy_converter<strategy::line_interpolate::spherical<CT, DS> >
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{
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static auto get(strategy::line_interpolate::spherical<CT, DS> const& s)
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{
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typedef typename strategy::line_interpolate::spherical<CT, DS>::radius_type radius_type;
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return strategies::line_interpolate::spherical<radius_type, CT>(s.radius());
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}
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};
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} // namespace services
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}} // namespace strategies::line_interpolate
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}} // namespace boost::geometry
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#endif // BOOST_GEOMETRY_STRATEGIES_LINE_INTERPOLATE_SPHERICAL_HPP
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