FM / algorithms

/usr/include/boost/geometry/algorithms

Name	Size	Mode	Actions
detail/	-	0755	rm
dispatch/	-	0755	rm
append.hpp	11493	0644	edit dl rm
area.hpp	10657	0644	edit dl rm
assign.hpp	10709	0644	edit dl rm
buffer.hpp	8656	0644	edit dl rm
centroid.hpp	19620	0644	edit dl rm
clear.hpp	5156	0644	edit dl rm
comparable_distance.hpp	1107	0644	edit dl rm
convert.hpp	17327	0644	edit dl rm
convex_hull.hpp	11589	0644	edit dl rm
correct.hpp	9956	0644	edit dl rm
correct_closure.hpp	5862	0644	edit dl rm
covered_by.hpp	1077	0644	edit dl rm
crosses.hpp	8478	0644	edit dl rm
densify.hpp	12472	0644	edit dl rm
difference.hpp	16591	0644	edit dl rm
discrete_frechet_distance.hpp	7844	0644	edit dl rm
discrete_hausdorff_distance.hpp	11281	0644	edit dl rm
disjoint.hpp	1191	0644	edit dl rm
distance.hpp	1110	0644	edit dl rm
envelope.hpp	1021	0644	edit dl rm
equals.hpp	1196	0644	edit dl rm
expand.hpp	1073	0644	edit dl rm
for_each.hpp	9831	0644	edit dl rm
intersection.hpp	806	0644	edit dl rm
intersects.hpp	1145	0644	edit dl rm
is_convex.hpp	6508	0644	edit dl rm
is_empty.hpp	4853	0644	edit dl rm
is_simple.hpp	575	0644	edit dl rm
is_valid.hpp	570	0644	edit dl rm
length.hpp	9341	0644	edit dl rm
line_interpolate.hpp	13054	0644	edit dl rm
make.hpp	5170	0644	edit dl rm
not_implemented.hpp	3839	0644	edit dl rm
num_geometries.hpp	3586	0644	edit dl rm
num_interior_rings.hpp	3756	0644	edit dl rm
num_points.hpp	5565	0644	edit dl rm
num_segments.hpp	4775	0644	edit dl rm
overlaps.hpp	1067	0644	edit dl rm
perimeter.hpp	7212	0644	edit dl rm
point_on_surface.hpp	13281	0644	edit dl rm
relate.hpp	642	0644	edit dl rm
relation.hpp	652	0644	edit dl rm
remove_spikes.hpp	9753	0644	edit dl rm
reverse.hpp	4386	0644	edit dl rm
simplify.hpp	22696	0644	edit dl rm
sym_difference.hpp	23169	0644	edit dl rm
touches.hpp	1127	0644	edit dl rm
transform.hpp	14105	0644	edit dl rm
union.hpp	21383	0644	edit dl rm
unique.hpp	4682	0644	edit dl rm
validity_failure_type.hpp	3684	0644	edit dl rm
within.hpp	1057	0644	edit dl rm

Edit: /usr/include/boost/geometry/algorithms/sym_difference.hpp (23169B)

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

// This file was modified by Oracle on 2015, 2017, 2019, 2020.
// Modifications copyright (c) 2015-2020 Oracle and/or its affiliates.

// Contributed and/or modified by Menelaos Karavelas, 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_ALGORITHMS_SYM_DIFFERENCE_HPP
#define BOOST_GEOMETRY_ALGORITHMS_SYM_DIFFERENCE_HPP

#include <algorithm>
#include <iterator>
#include <vector>

#include <boost/variant/apply_visitor.hpp>
#include <boost/variant/static_visitor.hpp>
#include <boost/variant/variant_fwd.hpp>

#include <boost/geometry/algorithms/intersection.hpp>
#include <boost/geometry/algorithms/union.hpp>
#include <boost/geometry/geometries/multi_polygon.hpp>
#include <boost/geometry/policies/robustness/get_rescale_policy.hpp>
#include <boost/geometry/strategies/default_strategy.hpp>
#include <boost/geometry/strategies/relate.hpp>
#include <boost/geometry/util/range.hpp>

namespace boost { namespace geometry
{

#ifndef DOXYGEN_NO_DETAIL
namespace detail { namespace sym_difference
{

template <typename GeometryOut>
struct compute_difference
{
    template
    <
        typename Geometry1,
        typename Geometry2,
        typename RobustPolicy,
        typename OutputIterator,
        typename Strategy
    >
    static inline OutputIterator apply(Geometry1 const& geometry1,
                                       Geometry2 const& geometry2,
                                       RobustPolicy const& robust_policy,
                                       OutputIterator out,
                                       Strategy const& strategy)
    {
        return geometry::dispatch::intersection_insert
            <
                Geometry1,
                Geometry2,
                GeometryOut,
                overlay_difference,
                geometry::detail::overlay::do_reverse
                    <
                        geometry::point_order<Geometry1>::value
                    >::value,
                geometry::detail::overlay::do_reverse
                    <
                        geometry::point_order<Geometry2>::value, true
                    >::value
            >::apply(geometry1, geometry2, robust_policy, out, strategy);
    }
};

template <typename GeometryOut, typename Geometry1, typename Geometry2>
struct sym_difference_generic
{
    template
    <
        typename RobustPolicy,
        typename OutputIterator,
        typename Strategy
    >
    static inline OutputIterator apply(Geometry1 const& geometry1,
                                       Geometry2 const& geometry2,
                                       RobustPolicy const& robust_policy,
                                       OutputIterator out,
                                       Strategy const& strategy)
    {
        out = compute_difference
            <
                GeometryOut
            >::apply(geometry1, geometry2, robust_policy, out, strategy);

return compute_difference
            <
                GeometryOut
            >::apply(geometry2, geometry1, robust_policy, out, strategy);
    }
};

template <typename GeometryOut, typename Areal1, typename Areal2>
struct sym_difference_areal_areal
{
    template
    <
        typename RobustPolicy,
        typename OutputIterator,
        typename Strategy
    >
    static inline OutputIterator apply(Areal1 const& areal1,
                                       Areal2 const& areal2,
                                       RobustPolicy const& robust_policy,
                                       OutputIterator out,
                                       Strategy const& strategy)
    {
        typedef geometry::model::multi_polygon
            <
                GeometryOut
            > helper_geometry_type;

helper_geometry_type diff12, diff21;

std::back_insert_iterator<helper_geometry_type> oit12(diff12);
        std::back_insert_iterator<helper_geometry_type> oit21(diff21);

compute_difference
            <
                GeometryOut
            >::apply(areal1, areal2, robust_policy, oit12, strategy);

compute_difference
            <
                GeometryOut
            >::apply(areal2, areal1, robust_policy, oit21, strategy);

return geometry::dispatch::union_insert
            <
                helper_geometry_type,
                helper_geometry_type,
                GeometryOut
            >::apply(diff12, diff21, robust_policy, out, strategy);
    }
};

template
<
    typename GeometryOut,
    typename SingleTag,
    template <typename, typename, typename> class Algorithm
>
struct sym_difference_same_inputs_tupled_output
{
    template
    <
        typename Geometry1,
        typename Geometry2,
        typename RobustPolicy,
        typename OutputIterator,
        typename Strategy
    >
    static inline OutputIterator apply(Geometry1 const& geometry1,
                                       Geometry2 const& geometry2,
                                       RobustPolicy const& robust_policy,
                                       OutputIterator out,
                                       Strategy const& strategy)
    {
        typedef typename geometry::detail::output_geometry_access
            <
                GeometryOut, SingleTag, SingleTag
            > access;

access::get(out) = Algorithm
            <
                typename access::type, Geometry1, Geometry2
            >::apply(geometry1, geometry2, robust_policy, access::get(out), strategy);

return out;
    }
};

template
<
    typename GeometryOut,
    typename SingleTag1,
    typename SingleTag2,
    bool Reverse = (geometry::core_dispatch::top_dim<SingleTag1>::value
                    > geometry::core_dispatch::top_dim<SingleTag2>::value)
>
struct sym_difference_different_inputs_tupled_output
{
    template
    <
        typename Geometry1,
        typename Geometry2,
        typename RobustPolicy,
        typename OutputIterator,
        typename Strategy
    >
    static inline OutputIterator apply(Geometry1 const& geometry1,
                                       Geometry2 const& geometry2,
                                       RobustPolicy const& robust_policy,
                                       OutputIterator out,
                                       Strategy const& strategy)
    {
        return sym_difference_different_inputs_tupled_output
            <
                GeometryOut, SingleTag2, SingleTag1
            >::apply(geometry2, geometry1, robust_policy, out, strategy);
    }
};

template
<
    typename GeometryOut,
    typename SingleTag1,
    typename SingleTag2
>
struct sym_difference_different_inputs_tupled_output
    <
        GeometryOut, SingleTag1, SingleTag2, false
    >
{
    template
    <
        typename Geometry1,
        typename Geometry2,
        typename RobustPolicy,
        typename OutputIterator,
        typename Strategy
    >
    static inline OutputIterator apply(Geometry1 const& geometry1,
                                       Geometry2 const& geometry2,
                                       RobustPolicy const& robust_policy,
                                       OutputIterator out,
                                       Strategy const& strategy)
    {
        typedef typename geometry::detail::output_geometry_access
            <
                GeometryOut, SingleTag1, SingleTag1
            > access1;
        typedef typename geometry::detail::output_geometry_access
            <
                GeometryOut, SingleTag2, SingleTag2
            > access2;

access1::get(out) = compute_difference
            <
                typename access1::type
            >::apply(geometry1, geometry2, robust_policy, access1::get(out), strategy);

access2::get(out) = geometry::detail::convert_to_output
            <
                Geometry2,
                typename access2::type
            >::apply(geometry2, access2::get(out));

return out;
    }
};

}} // namespace detail::sym_difference
#endif // DOXYGEN_NO_DETAIL

#ifndef DOXYGEN_NO_DISPATCH
namespace dispatch
{

template
<
    typename Geometry1,
    typename Geometry2,
    typename GeometryOut,
    typename TagIn1 = typename geometry::tag_cast
        <
            typename tag<Geometry1>::type, pointlike_tag, linear_tag, areal_tag
        >::type,
    typename TagIn2 = typename geometry::tag_cast
        <
            typename tag<Geometry2>::type, pointlike_tag, linear_tag, areal_tag
        >::type,
    typename TagOut = typename detail::setop_insert_output_tag<GeometryOut>::type
>
struct sym_difference_insert
    : detail::sym_difference::sym_difference_generic
        <
            GeometryOut, Geometry1, Geometry2
        >
{};

template
<
    typename Areal1,
    typename Areal2,
    typename GeometryOut,
    typename TagOut
>
struct sym_difference_insert
    <
        Areal1, Areal2, GeometryOut,
        areal_tag, areal_tag, TagOut
    > : detail::sym_difference::sym_difference_areal_areal
        <
            GeometryOut, Areal1, Areal2
        >
{};

template
<
    typename PointLike1,
    typename PointLike2,
    typename GeometryOut
>
struct sym_difference_insert
    <
        PointLike1, PointLike2, GeometryOut,
        pointlike_tag, pointlike_tag, detail::tupled_output_tag
    >
    : detail::expect_output<PointLike1, PointLike2, GeometryOut, point_tag>
    , detail::sym_difference::sym_difference_same_inputs_tupled_output
        <
            GeometryOut,
            point_tag,
            detail::sym_difference::sym_difference_generic
        >
{};

template
<
    typename Linear1,
    typename Linear2,
    typename GeometryOut
>
struct sym_difference_insert
    <
        Linear1, Linear2, GeometryOut,
        linear_tag, linear_tag, detail::tupled_output_tag
    >
    : detail::expect_output<Linear1, Linear2, GeometryOut, linestring_tag>
    , detail::sym_difference::sym_difference_same_inputs_tupled_output
        <
            GeometryOut,
            linestring_tag,
            detail::sym_difference::sym_difference_generic
        >
{};

template
<
    typename Areal1,
    typename Areal2,
    typename GeometryOut
>
struct sym_difference_insert
    <
        Areal1, Areal2, GeometryOut,
        areal_tag, areal_tag, detail::tupled_output_tag
    >
    : detail::expect_output<Areal1, Areal2, GeometryOut, polygon_tag>
    , detail::sym_difference::sym_difference_same_inputs_tupled_output
        <
            GeometryOut,
            polygon_tag,
            detail::sym_difference::sym_difference_areal_areal
        >
{};

template
<
    typename Geometry1,
    typename Geometry2,
    typename GeometryOut,
    typename TagIn1,
    typename TagIn2
>
struct sym_difference_insert
    <
        Geometry1, Geometry2, GeometryOut,
        TagIn1, TagIn2, detail::tupled_output_tag
    >
    : detail::expect_output
        <
            Geometry1, Geometry2, GeometryOut,
            typename detail::single_tag_from_base_tag<TagIn1>::type,
            typename detail::single_tag_from_base_tag<TagIn2>::type
        >
    , detail::sym_difference::sym_difference_different_inputs_tupled_output
        <
            GeometryOut,
            typename detail::single_tag_from_base_tag<TagIn1>::type,
            typename detail::single_tag_from_base_tag<TagIn2>::type
        >
{};

} // namespace dispatch
#endif // DOXYGEN_NO_DISPATCH

#ifndef DOXYGEN_NO_DETAIL
namespace detail { namespace sym_difference
{

/*!
\brief \brief_calc2{symmetric difference}  \brief_strategy
\ingroup sym_difference
\details \details_calc2{symmetric difference, spatial set theoretic symmetric difference (XOR)}
    \brief_strategy. \details_insert{sym_difference}
\tparam GeometryOut output geometry type, must be specified
\tparam Geometry1 \tparam_geometry
\tparam Geometry2 \tparam_geometry
\tparam Strategy \tparam_strategy_overlay
\param geometry1 \param_geometry
\param geometry2 \param_geometry
\param out \param_out{difference}
\param strategy \param_strategy{difference}
\return \return_out

\qbk{distinguish,with strategy}
*/
template
<
    typename GeometryOut,
    typename Geometry1,
    typename Geometry2,
    typename OutputIterator,
    typename Strategy
>
inline OutputIterator sym_difference_insert(Geometry1 const& geometry1,
            Geometry2 const& geometry2,
            OutputIterator out,
            Strategy const& strategy)
{
    concepts::check<Geometry1 const>();
    concepts::check<Geometry2 const>();
    //concepts::check<GeometryOut>();
    geometry::detail::output_geometry_concept_check<GeometryOut>::apply();

typedef typename geometry::rescale_overlay_policy_type
        <
            Geometry1,
            Geometry2,
            typename Strategy::cs_tag
        >::type rescale_policy_type;

rescale_policy_type robust_policy
            = geometry::get_rescale_policy<rescale_policy_type>(
                geometry1, geometry2, strategy);

return dispatch::sym_difference_insert
        <
            Geometry1, Geometry2, GeometryOut
        >::apply(geometry1, geometry2, robust_policy, out, strategy);
}

/*!
\brief \brief_calc2{symmetric difference}
\ingroup sym_difference
\details \details_calc2{symmetric difference, spatial set theoretic symmetric difference (XOR)}
    \details_insert{sym_difference}
\tparam GeometryOut output geometry type, must be specified
\tparam Geometry1 \tparam_geometry
\tparam Geometry2 \tparam_geometry
\param geometry1 \param_geometry
\param geometry2 \param_geometry
\param out \param_out{difference}
\return \return_out

*/
template
<
    typename GeometryOut,
    typename Geometry1,
    typename Geometry2,
    typename OutputIterator
>
inline OutputIterator sym_difference_insert(Geometry1 const& geometry1,
            Geometry2 const& geometry2, OutputIterator out)
{
    typedef typename strategy::intersection::services::default_strategy
        <
            typename cs_tag<GeometryOut>::type
        >::type strategy_type;

return sym_difference_insert<GeometryOut>(geometry1, geometry2, out, strategy_type());
}

}} // namespace detail::sym_difference
#endif // DOXYGEN_NO_DETAIL

namespace resolve_strategy {

struct sym_difference
{
    template
    <
        typename Geometry1,
        typename Geometry2,
        typename Collection,
        typename Strategy
    >
    static inline void apply(Geometry1 const& geometry1,
                             Geometry2 const& geometry2,
                             Collection & output_collection,
                             Strategy const& strategy)
    {
        typedef typename geometry::detail::output_geometry_value
            <
                Collection
            >::type single_out;

detail::sym_difference::sym_difference_insert<single_out>(
            geometry1, geometry2,
            geometry::detail::output_geometry_back_inserter(output_collection),
            strategy);
    }

template
    <
        typename Geometry1,
        typename Geometry2,
        typename Collection
    >
    static inline void apply(Geometry1 const& geometry1,
                             Geometry2 const& geometry2,
                             Collection & output_collection,
                             default_strategy)
    {
        typedef typename strategy::relate::services::default_strategy
            <
                Geometry1, Geometry2
            >::type strategy_type;

apply(geometry1, geometry2, output_collection, strategy_type());
    }
};

} // resolve_strategy

namespace resolve_variant
{
    
template <typename Geometry1, typename Geometry2>
struct sym_difference
{
    template <typename Collection, typename Strategy>
    static inline void apply(Geometry1 const& geometry1,
                             Geometry2 const& geometry2,
                             Collection& output_collection,
                             Strategy const& strategy)
    {
        resolve_strategy::sym_difference::apply(geometry1, geometry2,
                                                output_collection,
                                                strategy);
    }
};

template <BOOST_VARIANT_ENUM_PARAMS(typename T), typename Geometry2>
struct sym_difference<variant<BOOST_VARIANT_ENUM_PARAMS(T)>, Geometry2>
{
    template <typename Collection, typename Strategy>
    struct visitor: static_visitor<>
    {
        Geometry2 const& m_geometry2;
        Collection& m_output_collection;
        Strategy const& m_strategy;
        
        visitor(Geometry2 const& geometry2,
                Collection& output_collection,
                Strategy const& strategy)
            : m_geometry2(geometry2)
            , m_output_collection(output_collection)
            , m_strategy(strategy)
        {}
        
        template <typename Geometry1>
        void operator()(Geometry1 const& geometry1) const
        {
            sym_difference
                <
                    Geometry1,
                    Geometry2
                >::apply(geometry1, m_geometry2, m_output_collection, m_strategy);
        }
    };
    
    template <typename Collection, typename Strategy>
    static inline void
    apply(variant<BOOST_VARIANT_ENUM_PARAMS(T)> const& geometry1,
          Geometry2 const& geometry2,
          Collection& output_collection,
          Strategy const& strategy)
    {
        boost::apply_visitor(visitor<Collection, Strategy>(geometry2,
                                                           output_collection,
                                                           strategy),
                             geometry1);
    }
};

template <typename Geometry1, BOOST_VARIANT_ENUM_PARAMS(typename T)>
struct sym_difference<Geometry1, variant<BOOST_VARIANT_ENUM_PARAMS(T)> >
{
    template <typename Collection, typename Strategy>
    struct visitor: static_visitor<>
    {
        Geometry1 const& m_geometry1;
        Collection& m_output_collection;
        Strategy const& m_strategy;
        
        visitor(Geometry1 const& geometry1,
                Collection& output_collection,
                Strategy const& strategy)
            : m_geometry1(geometry1)
            , m_output_collection(output_collection)
            , m_strategy(strategy)
        {}
        
        template <typename Geometry2>
        void operator()(Geometry2 const& geometry2) const
        {
            sym_difference
                <
                    Geometry1,
                    Geometry2
                >::apply(m_geometry1, geometry2, m_output_collection, m_strategy);
        }
    };
    
    template <typename Collection, typename Strategy>
    static inline void
    apply(Geometry1 const& geometry1,
          variant<BOOST_VARIANT_ENUM_PARAMS(T)> const& geometry2,
          Collection& output_collection,
          Strategy const& strategy)
    {
        boost::apply_visitor(visitor<Collection, Strategy>(geometry1,
                                                           output_collection,
                                                           strategy),
                             geometry2);
    }
};

template <BOOST_VARIANT_ENUM_PARAMS(typename T1), BOOST_VARIANT_ENUM_PARAMS(typename T2)>
struct sym_difference<variant<BOOST_VARIANT_ENUM_PARAMS(T1)>, variant<BOOST_VARIANT_ENUM_PARAMS(T2)> >
{
    template <typename Collection, typename Strategy>
    struct visitor: static_visitor<>
    {
        Collection& m_output_collection;
        Strategy const& m_strategy;
        
        visitor(Collection& output_collection, Strategy const& strategy)
            : m_output_collection(output_collection)
            , m_strategy(strategy)
        {}
        
        template <typename Geometry1, typename Geometry2>
        void operator()(Geometry1 const& geometry1,
                        Geometry2 const& geometry2) const
        {
            sym_difference
                <
                    Geometry1,
                    Geometry2
                >::apply(geometry1, geometry2, m_output_collection, m_strategy);
        }
    };
    
    template <typename Collection, typename Strategy>
    static inline void
    apply(variant<BOOST_VARIANT_ENUM_PARAMS(T1)> const& geometry1,
          variant<BOOST_VARIANT_ENUM_PARAMS(T2)> const& geometry2,
          Collection& output_collection,
          Strategy const& strategy)
    {
        boost::apply_visitor(visitor<Collection, Strategy>(output_collection,
                                                           strategy),
                             geometry1, geometry2);
    }
};
    
} // namespace resolve_variant

/*!
\brief \brief_calc2{symmetric difference}
\ingroup sym_difference
\details \details_calc2{symmetric difference, spatial set theoretic symmetric difference (XOR)}.
\tparam Geometry1 \tparam_geometry
\tparam Geometry2 \tparam_geometry
\tparam Collection output collection, either a multi-geometry,
    or a std::vector<Geometry> / std::deque<Geometry> etc
\tparam Strategy \tparam_strategy{Sym_difference}
\param geometry1 \param_geometry
\param geometry2 \param_geometry
\param output_collection the output collection
\param strategy \param_strategy{sym_difference}

\qbk{distinguish,with strategy}
\qbk{[include reference/algorithms/sym_difference.qbk]}
*/
template
<
    typename Geometry1,
    typename Geometry2,
    typename Collection,
    typename Strategy
>
inline void sym_difference(Geometry1 const& geometry1,
                           Geometry2 const& geometry2,
                           Collection& output_collection,
                           Strategy const& strategy)
{
    resolve_variant::sym_difference
        <
            Geometry1,
            Geometry2
        >::apply(geometry1, geometry2, output_collection, strategy);
}

/*!
\brief \brief_calc2{symmetric difference}
\ingroup sym_difference
\details \details_calc2{symmetric difference, spatial set theoretic symmetric difference (XOR)}.
\tparam Geometry1 \tparam_geometry
\tparam Geometry2 \tparam_geometry
\tparam Collection output collection, either a multi-geometry,
    or a std::vector<Geometry> / std::deque<Geometry> etc
\param geometry1 \param_geometry
\param geometry2 \param_geometry
\param output_collection the output collection

\qbk{[include reference/algorithms/sym_difference.qbk]}
*/
template
<
    typename Geometry1,
    typename Geometry2,
    typename Collection
>
inline void sym_difference(Geometry1 const& geometry1,
                           Geometry2 const& geometry2,
                           Collection& output_collection)
{
    resolve_variant::sym_difference
        <
            Geometry1,
            Geometry2
        >::apply(geometry1, geometry2, output_collection, default_strategy());    
}

}} // namespace boost::geometry

#endif // BOOST_GEOMETRY_ALGORITHMS_SYM_DIFFERENCE_HPP

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