// Boost.Geometry (aka GGL, Generic Geometry Library)
|
|
// Copyright (c) 2007-2015 Barend Gehrels, Amsterdam, the Netherlands.
|
|
// 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
|
