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// Boost.Geometry
// Copyright (c) 2021, Oracle and/or its affiliates.
// Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
// Licensed under the Boost Software License version 1.0.
// http://www.boost.org/users/license.html
#ifndef BOOST_GEOMETRY_STRATEGIES_DISCRETE_DISTANCE_SPHERICAL_HPP
#define BOOST_GEOMETRY_STRATEGIES_DISCRETE_DISTANCE_SPHERICAL_HPP
#include <boost/geometry/strategies/detail.hpp>
#include <boost/geometry/strategies/discrete_distance/services.hpp>
#include <boost/geometry/strategies/distance/comparable.hpp>
#include <boost/geometry/strategies/distance/detail.hpp>
#include <boost/geometry/strategies/spherical/distance_haversine.hpp>
namespace boost { namespace geometry
{
namespace strategies { namespace discrete_distance
{
template
<
typename RadiusTypeOrSphere = double,
typename CalculationType = void
>
class spherical
: public strategies::detail::spherical_base<RadiusTypeOrSphere>
{
using base_t = strategies::detail::spherical_base<RadiusTypeOrSphere>;
public:
spherical() = default;
template <typename RadiusOrSphere>
explicit spherical(RadiusOrSphere const& radius_or_sphere)
: base_t(radius_or_sphere)
{}
template <typename Geometry1, typename Geometry2>
auto distance(Geometry1 const&, Geometry2 const&,
distance::detail::enable_if_pp_t<Geometry1, Geometry2> * = nullptr) const
{
return strategy::distance::haversine
<
typename base_t::radius_type, CalculationType
>(base_t::radius());
}
};
namespace services
{
template <typename Geometry1, typename Geometry2>
struct default_strategy<Geometry1, Geometry2, spherical_equatorial_tag, spherical_equatorial_tag>
{
using type = strategies::discrete_distance::spherical<>;
};
template <typename R, typename CT>
struct strategy_converter<strategy::distance::haversine<R, CT> >
{
static auto get(strategy::distance::haversine<R, CT> const& s)
{
return strategies::discrete_distance::spherical<R, CT>(s.radius());
}
};
template <typename R, typename CT>
struct strategy_converter<strategy::distance::comparable::haversine<R, CT> >
{
static auto get(strategy::distance::comparable::haversine<R, CT> const& s)
{
return strategies::distance::detail::make_comparable(
strategies::discrete_distance::spherical<R, CT>(s.radius()));
}
};
} // namespace services
}} // namespace strategies::discrete_distance
}} // namespace boost::geometry
#endif // BOOST_GEOMETRY_STRATEGIES_DISCRETE_DISTANCE_SPHERICAL_HPP
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