Added thirdparty: boost library

thirdparty/include/boost/geometry/strategies/closest_points/spherical.hpp

@@ -0,0 +1,78 @@
+// Boost.Geometry
+
+// Copyright (c) 2021, Oracle and/or its affiliates.
+
+// Contributed and/or modified by Vissarion Fysikopoulos, on behalf of Oracle
+
+// Licensed under the Boost Software License version 1.0.
+// http://www.boost.org/users/license.html
+
+#ifndef BOOST_GEOMETRY_STRATEGIES_CLOSEST_POINTS_SPHERICAL_HPP
+#define BOOST_GEOMETRY_STRATEGIES_CLOSEST_POINTS_SPHERICAL_HPP
+
+#include <boost/geometry/strategies/spherical/closest_points_pt_seg.hpp>
+
+#include <boost/geometry/strategies/detail.hpp>
+#include <boost/geometry/strategies/distance/detail.hpp>
+#include <boost/geometry/strategies/closest_points/services.hpp>
+
+#include <boost/geometry/strategies/distance/spherical.hpp>
+
+#include <boost/geometry/util/type_traits.hpp>
+
+
+namespace boost { namespace geometry
+{
+
+namespace strategies { namespace closest_points
+{
+
+template
+<
+    typename RadiusTypeOrSphere = double,
+    typename CalculationType = void
+>
+class spherical
+    : public strategies::distance::spherical<RadiusTypeOrSphere, CalculationType>
+{
+    using base_t = strategies::distance::spherical<RadiusTypeOrSphere, CalculationType>;
+
+public:
+    spherical() = default;
+
+    template <typename RadiusOrSphere>
+    explicit spherical(RadiusOrSphere const& radius_or_sphere)
+        : base_t(radius_or_sphere)
+    {}
+
+    template <typename Geometry1, typename Geometry2>
+    auto closest_points(Geometry1 const&, Geometry2 const&,
+                        distance::detail::enable_if_ps_t<Geometry1, Geometry2> * = nullptr) const
+    {
+        return strategy::closest_points::cross_track<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::closest_points::spherical<>;
+};
+
+} // namespace services
+
+}} // namespace strategies::closest_points
+
+}} // namespace boost::geometry
+
+#endif // BOOST_GEOMETRY_STRATEGIES_CLOSEST_POINTS_SPHERICAL_HPP