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// Boost.Geometry (aka GGL, Generic Geometry Library)

// Copyright (c) 2018-2019 Oracle and/or its affiliates.
// Contributed and/or modified by Vissarion Fisikopoulos, on behalf of Oracle
// Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle

// Use, modification and distribution is subject to 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_GEOGRAPHIC_DISTANCE_SEGMENT_BOX_HPP
#define BOOST_GEOMETRY_STRATEGIES_GEOGRAPHIC_DISTANCE_SEGMENT_BOX_HPP

#include <boost/geometry/srs/spheroid.hpp>

#include <boost/geometry/algorithms/detail/distance/segment_to_box.hpp>

#include <boost/geometry/strategies/distance.hpp>
#include <boost/geometry/strategies/geographic/azimuth.hpp>
#include <boost/geometry/strategies/geographic/distance_cross_track.hpp>
#include <boost/geometry/strategies/geographic/parameters.hpp>
#include <boost/geometry/strategies/geographic/side.hpp>
#include <boost/geometry/strategies/normalize.hpp>
#include <boost/geometry/strategies/spherical/disjoint_box_box.hpp>
#include <boost/geometry/strategies/spherical/distance_segment_box.hpp>
#include <boost/geometry/strategies/spherical/point_in_point.hpp>

#include <boost/geometry/util/promote_floating_point.hpp>
#include <boost/geometry/util/select_calculation_type.hpp>

namespace boost { namespace geometry
{


namespace strategy { namespace distance
{

template
<
    typename FormulaPolicy = strategy::andoyer,
    typename Spheroid = srs::spheroid<double>,
    typename CalculationType = void
>
struct geographic_segment_box
{
    template <typename PointOfSegment, typename PointOfBox>
    struct return_type
        : promote_floating_point
          <
              typename select_calculation_type
                  <
                      PointOfSegment,
                      PointOfBox,
                      CalculationType
                  >::type
          >
    {};

    typedef geographic_tag cs_tag;

    // point-point strategy getters
    struct distance_pp_strategy
    {
        typedef geographic<FormulaPolicy, Spheroid, CalculationType> type;
    };

    inline typename distance_pp_strategy::type get_distance_pp_strategy() const
    {
        typedef typename distance_pp_strategy::type distance_type;
        return distance_type(m_spheroid);
    }
    // point-segment strategy getters
    struct distance_ps_strategy
    {
        typedef geographic_cross_track
                <
                    FormulaPolicy,
                    Spheroid,
                    CalculationType
                > type;
    };

    inline typename distance_ps_strategy::type get_distance_ps_strategy() const
    {
        typedef typename distance_ps_strategy::type distance_type;
        return distance_type(m_spheroid);
    }

    struct distance_pb_strategy
    {
        typedef geographic_cross_track_point_box
                <
                    FormulaPolicy,
                    Spheroid,
                    CalculationType
                > type;
    };

    inline typename distance_pb_strategy::type get_distance_pb_strategy() const
    {
        return typename distance_pb_strategy::type(m_spheroid);
    }

    typedef side::geographic
            <
                FormulaPolicy,
                Spheroid,
                CalculationType
            > side_strategy_type;

    inline side_strategy_type get_side_strategy() const
    {
        return side_strategy_type(m_spheroid);
    }

    typedef within::spherical_point_point equals_point_point_strategy_type;

    static inline equals_point_point_strategy_type get_equals_point_point_strategy()
    {
        return equals_point_point_strategy_type();
    }

    //constructor

    explicit geographic_segment_box(Spheroid const& spheroid = Spheroid())
             : m_spheroid(spheroid)
    {}

    // methods

    template <typename LessEqual, typename ReturnType,
              typename SegmentPoint, typename BoxPoint>
    inline ReturnType segment_below_of_box(SegmentPoint const& p0,
                                   SegmentPoint const& p1,
                                   BoxPoint const& top_left,
                                   BoxPoint const& top_right,
                                   BoxPoint const& bottom_left,
                                   BoxPoint const& bottom_right) const
    {
        typedef typename azimuth::geographic
        <
                FormulaPolicy,
                Spheroid,
                CalculationType
        > azimuth_strategy_type;
        azimuth_strategy_type az_strategy(m_spheroid);

        typedef typename envelope::geographic_segment
        <
                FormulaPolicy,
                Spheroid,
                CalculationType
        > envelope_segment_strategy_type;
        envelope_segment_strategy_type es_strategy(m_spheroid);

        return generic_segment_box::segment_below_of_box
               <
                    LessEqual,
                    ReturnType
               >(p0,p1,top_left,top_right,bottom_left,bottom_right,
                 geographic_segment_box<FormulaPolicy, Spheroid, CalculationType>(),
                 az_strategy, es_strategy,
                 normalize::spherical_point(),
                 covered_by::spherical_point_box(),
                 disjoint::spherical_box_box());
    }

    template <typename SPoint, typename BPoint>
    static void mirror(SPoint& p0,
                       SPoint& p1,
                       BPoint& bottom_left,
                       BPoint& bottom_right,
                       BPoint& top_left,
                       BPoint& top_right)
    {

       generic_segment_box::mirror(p0, p1,
                                   bottom_left, bottom_right,
                                   top_left, top_right);
    }

private :
    Spheroid m_spheroid;
};

#ifndef DOXYGEN_NO_STRATEGY_SPECIALIZATIONS
namespace services
{

//tags

template <typename FormulaPolicy>
struct tag<geographic_segment_box<FormulaPolicy> >
{
    typedef strategy_tag_distance_segment_box type;
};

template
<
        typename FormulaPolicy,
        typename Spheroid
>
struct tag<geographic_segment_box<FormulaPolicy, Spheroid> >
{
    typedef strategy_tag_distance_segment_box type;
};

template
<
        typename FormulaPolicy,
        typename Spheroid,
        typename CalculationType
>
struct tag<geographic_segment_box<FormulaPolicy, Spheroid, CalculationType> >
{
    typedef strategy_tag_distance_segment_box type;
};

// return types

template <typename FormulaPolicy, typename PS, typename PB>
struct return_type<geographic_segment_box<FormulaPolicy>, PS, PB>
    : geographic_segment_box<FormulaPolicy>::template return_type<PS, PB>
{};

template
<
        typename FormulaPolicy,
        typename Spheroid,
        typename PS,
        typename PB
>
struct return_type<geographic_segment_box<FormulaPolicy, Spheroid>, PS, PB>
    : geographic_segment_box<FormulaPolicy, Spheroid>::template return_type<PS, PB>
{};

template
<
        typename FormulaPolicy,
        typename Spheroid,
        typename CalculationType,
        typename PS,
        typename PB
>
struct return_type<geographic_segment_box<FormulaPolicy, Spheroid, CalculationType>, PS, PB>
    : geographic_segment_box<FormulaPolicy, Spheroid, CalculationType>::template return_type<PS, PB>
{};

//comparable types

template
<
        typename FormulaPolicy,
        typename Spheroid,
        typename CalculationType
>
struct comparable_type<geographic_segment_box<FormulaPolicy, Spheroid, CalculationType> >
{
    typedef geographic_segment_box
        <
            FormulaPolicy, Spheroid, CalculationType
        >  type;
};

template
<
        typename FormulaPolicy,
        typename Spheroid,
        typename CalculationType
>
struct get_comparable<geographic_segment_box<FormulaPolicy, Spheroid, CalculationType> >
{
    typedef typename comparable_type
        <
            geographic_segment_box<FormulaPolicy, Spheroid, CalculationType>
        >::type comparable_type;
public :
    static inline comparable_type
    apply(geographic_segment_box<FormulaPolicy, Spheroid, CalculationType> const& )
    {
        return comparable_type();
    }
};

// result from distance

template
<
    typename FormulaPolicy,
    typename PS,
    typename PB
>
struct result_from_distance<geographic_segment_box<FormulaPolicy>, PS, PB>
{
private :
    typedef typename geographic_segment_box
        <
            FormulaPolicy
        >::template return_type<PS, PB>::type return_type;
public :
    template <typename T>
    static inline return_type
    apply(geographic_segment_box<FormulaPolicy> const& , T const& distance)
    {
        return distance;
    }
};

template
<
    typename FormulaPolicy,
    typename Spheroid,
    typename CalculationType,
    typename PS,
    typename PB
>
struct result_from_distance<geographic_segment_box<FormulaPolicy, Spheroid, CalculationType>, PS, PB>
{
private :
    typedef typename geographic_segment_box
        <
            FormulaPolicy, Spheroid, CalculationType
        >::template return_type<PS, PB>::type return_type;
public :
    template <typename T>
    static inline return_type
    apply(geographic_segment_box<FormulaPolicy, Spheroid, CalculationType> const& , T const& distance)
    {
        return distance;
    }
};


// default strategies

template <typename Segment, typename Box>
struct default_strategy
    <
        segment_tag, box_tag, Segment, Box,
        geographic_tag, geographic_tag
    >
{
    typedef geographic_segment_box<> type;
};

template <typename Box, typename Segment>
struct default_strategy
    <
        box_tag, segment_tag, Box, Segment,
        geographic_tag, geographic_tag
    >
{
    typedef typename default_strategy
        <
            segment_tag, box_tag, Segment, Box,
            geographic_tag, geographic_tag
        >::type type;
};

}
#endif

}} // namespace strategy::distance

}} // namespace boost::geometry
#endif // BOOST_GEOMETRY_STRATEGIES_GEOGRAPHIC_DISTANCE_SEGMENT_BOX_HPP

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