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Filename : envelope_point.hpp
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// Boost.Geometry (aka GGL, Generic Geometry Library)

// Copyright (c) 2007-2015 Barend Gehrels, Amsterdam, the Netherlands.
// Copyright (c) 2008-2015 Bruno Lalande, Paris, France.
// Copyright (c) 2009-2015 Mateusz Loskot, London, UK.

// This file was modified by Oracle on 2015, 2016, 2017, 2018.
// Modifications copyright (c) 2015-2018, Oracle and/or its affiliates.

// Contributed and/or modified by Vissarion Fysikopoulos, on behalf of Oracle
// Contributed and/or modified by Menelaos Karavelas, on behalf of Oracle
// Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle

// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)

#ifndef BOOST_GEOMETRY_STRATEGIES_SPHERICAL_ENVELOPE_POINT_HPP
#define BOOST_GEOMETRY_STRATEGIES_SPHERICAL_ENVELOPE_POINT_HPP

#include <cstddef>

#include <boost/geometry/core/access.hpp>
#include <boost/geometry/core/cs.hpp>
#include <boost/geometry/core/coordinate_dimension.hpp>
#include <boost/geometry/core/coordinate_system.hpp>
#include <boost/geometry/core/tags.hpp>

#include <boost/geometry/views/detail/indexed_point_view.hpp>

#include <boost/geometry/algorithms/detail/convert_point_to_point.hpp>
#include <boost/geometry/algorithms/detail/normalize.hpp>

#include <boost/geometry/algorithms/detail/envelope/transform_units.hpp>

#include <boost/geometry/strategies/cartesian/envelope_point.hpp>

#include <boost/geometry/strategies/envelope.hpp>


namespace boost { namespace geometry
{

namespace strategy { namespace envelope
{

struct spherical_point
{
    template<typename Point, typename Box>
    static inline void apply(Point const& point, Box& mbr)
    {
        Point normalized_point;
        strategy::normalize::spherical_point::apply(point, normalized_point);

        typename point_type<Box>::type box_point;

        // transform units of input point to units of a box point
        geometry::detail::envelope::transform_units(normalized_point, box_point);

        geometry::set<min_corner, 0>(mbr, geometry::get<0>(box_point));
        geometry::set<min_corner, 1>(mbr, geometry::get<1>(box_point));

        geometry::set<max_corner, 0>(mbr, geometry::get<0>(box_point));
        geometry::set<max_corner, 1>(mbr, geometry::get<1>(box_point));

        typedef geometry::detail::envelope::envelope_one_point
            <
                2, dimension<Point>::value
            > per_corner;
        per_corner::template apply<min_corner>(normalized_point, mbr);
        per_corner::template apply<max_corner>(normalized_point, mbr);
    }
};


#ifndef DOXYGEN_NO_STRATEGY_SPECIALIZATIONS

namespace services
{

template <typename CalculationType>
struct default_strategy<point_tag, spherical_equatorial_tag, CalculationType>
{
    typedef strategy::envelope::spherical_point type;
};

template <typename CalculationType>
struct default_strategy<point_tag, spherical_polar_tag, CalculationType>
{
    typedef strategy::envelope::spherical_point type;
};

template <typename CalculationType>
struct default_strategy<point_tag, geographic_tag, CalculationType>
{
    typedef strategy::envelope::spherical_point type;
};


}

#endif // DOXYGEN_NO_STRATEGY_SPECIALIZATIONS


}} // namespace strategy::envelope


}} // namespace boost::geometry


#endif // BOOST_GEOMETRY_STRATEGIES_SPHERICAL_ENVELOPE_POINT_HPP