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149 lines
4.2 KiB
149 lines
4.2 KiB
// Boost.Geometry (aka GGL, Generic Geometry Library) |
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// Copyright (c) 2007-2011 Barend Gehrels, Amsterdam, the Netherlands. |
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// Use, modification and distribution is subject to the Boost Software License, |
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// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at |
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// http://www.boost.org/LICENSE_1_0.txt) |
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#ifndef BOOST_GEOMETRY_ALGORITHMS_SYM_DIFFERENCE_HPP |
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#define BOOST_GEOMETRY_ALGORITHMS_SYM_DIFFERENCE_HPP |
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#include <algorithm> |
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#include <boost/geometry/algorithms/intersection.hpp> |
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namespace boost { namespace geometry |
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{ |
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#ifndef DOXYGEN_NO_DETAIL |
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namespace detail { namespace sym_difference |
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{ |
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/*! |
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\brief \brief_calc2{symmetric difference} \brief_strategy |
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\ingroup sym_difference |
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\details \details_calc2{symmetric difference, spatial set theoretic symmetric difference (XOR)} |
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\brief_strategy. \details_insert{sym_difference} |
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\tparam GeometryOut output geometry type, must be specified |
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\tparam Geometry1 \tparam_geometry |
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\tparam Geometry2 \tparam_geometry |
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\tparam Strategy \tparam_strategy_overlay |
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\param geometry1 \param_geometry |
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\param geometry2 \param_geometry |
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\param out \param_out{difference} |
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\param strategy \param_strategy{difference} |
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\return \return_out |
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\qbk{distinguish,with strategy} |
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*/ |
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template |
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< |
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typename GeometryOut, |
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typename Geometry1, |
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typename Geometry2, |
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typename OutputIterator, |
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typename Strategy |
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> |
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inline OutputIterator sym_difference_insert(Geometry1 const& geometry1, |
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Geometry2 const& geometry2, OutputIterator out, |
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Strategy const& strategy) |
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{ |
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concept::check<Geometry1 const>(); |
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concept::check<Geometry2 const>(); |
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concept::check<GeometryOut>(); |
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out = detail::intersection::insert<GeometryOut, true, overlay_difference>( |
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geometry1, geometry2, out, strategy); |
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out = detail::intersection::insert<GeometryOut, true, overlay_difference>( |
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geometry2, geometry1, out, strategy); |
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return out; |
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} |
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/*! |
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\brief \brief_calc2{symmetric difference} |
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\ingroup sym_difference |
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\details \details_calc2{symmetric difference, spatial set theoretic symmetric difference (XOR)} |
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\details_insert{sym_difference} |
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\tparam GeometryOut output geometry type, must be specified |
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\tparam Geometry1 \tparam_geometry |
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\tparam Geometry2 \tparam_geometry |
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\param geometry1 \param_geometry |
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\param geometry2 \param_geometry |
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\param out \param_out{difference} |
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\return \return_out |
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*/ |
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template |
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< |
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typename GeometryOut, |
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typename Geometry1, |
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typename Geometry2, |
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typename OutputIterator |
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> |
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inline OutputIterator sym_difference_insert(Geometry1 const& geometry1, |
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Geometry2 const& geometry2, OutputIterator out) |
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{ |
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concept::check<Geometry1 const>(); |
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concept::check<Geometry2 const>(); |
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concept::check<GeometryOut>(); |
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typedef strategy_intersection |
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< |
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typename cs_tag<GeometryOut>::type, |
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Geometry1, |
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Geometry2, |
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typename geometry::point_type<GeometryOut>::type |
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> strategy_type; |
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return sym_difference_insert<GeometryOut>(geometry1, geometry2, out, strategy_type()); |
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} |
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}} // namespace detail::sym_difference |
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#endif // DOXYGEN_NO_DETAIL |
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/*! |
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\brief \brief_calc2{symmetric difference} |
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\ingroup sym_difference |
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\details \details_calc2{symmetric difference, spatial set theoretic symmetric difference (XOR)}. |
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\tparam Geometry1 \tparam_geometry |
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\tparam Geometry2 \tparam_geometry |
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\tparam Collection output collection, either a multi-geometry, |
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or a std::vector<Geometry> / std::deque<Geometry> etc |
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\param geometry1 \param_geometry |
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\param geometry2 \param_geometry |
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\param output_collection the output collection |
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\qbk{[include reference/algorithms/sym_difference.qbk]} |
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*/ |
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template |
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< |
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typename Geometry1, |
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typename Geometry2, |
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typename Collection |
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> |
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inline void sym_difference(Geometry1 const& geometry1, |
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Geometry2 const& geometry2, Collection& output_collection) |
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{ |
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concept::check<Geometry1 const>(); |
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concept::check<Geometry2 const>(); |
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typedef typename boost::range_value<Collection>::type geometry_out; |
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concept::check<geometry_out>(); |
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detail::sym_difference::sym_difference_insert<geometry_out>( |
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geometry1, geometry2, |
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std::back_inserter(output_collection)); |
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} |
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}} // namespace boost::geometry |
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#endif // BOOST_GEOMETRY_ALGORITHMS_SYM_DIFFERENCE_HPP
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