198 lines
6.1 KiB
C++
198 lines
6.1 KiB
C++
// Boost.Geometry (aka GGL, Generic Geometry Library)
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// Copyright (c) 2007-2012 Barend Gehrels, Amsterdam, the Netherlands.
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// Copyright (c) 2008-2012 Bruno Lalande, Paris, France.
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// Copyright (c) 2009-2012 Mateusz Loskot, London, UK.
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// Parts of Boost.Geometry are redesigned from Geodan's Geographic Library
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// (geolib/GGL), copyright (c) 1995-2010 Geodan, 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_COVERED_BY_HPP
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#define BOOST_GEOMETRY_ALGORITHMS_COVERED_BY_HPP
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#include <cstddef>
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#include <boost/geometry/algorithms/not_implemented.hpp>
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#include <boost/geometry/algorithms/within.hpp>
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#include <boost/geometry/strategies/cartesian/point_in_box.hpp>
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#include <boost/geometry/strategies/cartesian/box_in_box.hpp>
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namespace boost { namespace geometry
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{
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#ifndef DOXYGEN_NO_DISPATCH
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namespace dispatch
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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 Tag1 = typename tag<Geometry1>::type,
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typename Tag2 = typename tag<Geometry2>::type
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>
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struct covered_by: not_implemented<Tag1, Tag2>
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{};
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template <typename Point, typename Box>
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struct covered_by<Point, Box, point_tag, box_tag>
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{
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template <typename Strategy>
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static inline bool apply(Point const& point, Box const& box, Strategy const& strategy)
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{
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::boost::ignore_unused_variable_warning(strategy);
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return strategy.apply(point, box);
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}
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};
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template <typename Box1, typename Box2>
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struct covered_by<Box1, Box2, box_tag, box_tag>
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{
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template <typename Strategy>
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static inline bool apply(Box1 const& box1, Box2 const& box2, Strategy const& strategy)
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{
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assert_dimension_equal<Box1, Box2>();
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::boost::ignore_unused_variable_warning(strategy);
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return strategy.apply(box1, box2);
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}
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};
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template <typename Point, typename Ring>
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struct covered_by<Point, Ring, point_tag, ring_tag>
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{
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template <typename Strategy>
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static inline bool apply(Point const& point, Ring const& ring, Strategy const& strategy)
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{
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return detail::within::point_in_ring
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<
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Point,
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Ring,
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order_as_direction<geometry::point_order<Ring>::value>::value,
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geometry::closure<Ring>::value,
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Strategy
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>::apply(point, ring, strategy) >= 0;
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}
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};
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template <typename Point, typename Polygon>
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struct covered_by<Point, Polygon, point_tag, polygon_tag>
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{
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template <typename Strategy>
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static inline bool apply(Point const& point, Polygon const& polygon, Strategy const& strategy)
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{
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return detail::within::point_in_polygon
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<
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Point,
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Polygon,
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order_as_direction<geometry::point_order<Polygon>::value>::value,
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geometry::closure<Polygon>::value,
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Strategy
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>::apply(point, polygon, strategy) >= 0;
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}
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};
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} // namespace dispatch
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#endif // DOXYGEN_NO_DISPATCH
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/*!
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\brief \brief_check12{is inside or on border}
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\ingroup covered_by
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\details \details_check12{covered_by, is inside or on border}.
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\tparam Geometry1 \tparam_geometry
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\tparam Geometry2 \tparam_geometry
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\param geometry1 \param_geometry which might be inside or on the border of the second geometry
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\param geometry2 \param_geometry which might cover the first geometry
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\return true if geometry1 is inside of or on the border of geometry2,
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else false
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\note The default strategy is used for covered_by detection
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\qbk{[include reference/algorithms/covered_by.qbk]}
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*/
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template<typename Geometry1, typename Geometry2>
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inline bool covered_by(Geometry1 const& geometry1, Geometry2 const& geometry2)
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{
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concept::check<Geometry1 const>();
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concept::check<Geometry2 const>();
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assert_dimension_equal<Geometry1, Geometry2>();
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typedef typename point_type<Geometry1>::type point_type1;
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typedef typename point_type<Geometry2>::type point_type2;
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typedef typename strategy::covered_by::services::default_strategy
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<
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typename tag<Geometry1>::type,
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typename tag<Geometry2>::type,
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typename tag<Geometry1>::type,
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typename tag_cast<typename tag<Geometry2>::type, areal_tag>::type,
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typename tag_cast
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<
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typename cs_tag<point_type1>::type, spherical_tag
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>::type,
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typename tag_cast
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<
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typename cs_tag<point_type2>::type, spherical_tag
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>::type,
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Geometry1,
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Geometry2
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>::type strategy_type;
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return dispatch::covered_by
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<
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Geometry1,
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Geometry2
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>::apply(geometry1, geometry2, strategy_type());
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}
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/*!
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\brief \brief_check12{is inside or on border} \brief_strategy
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\ingroup covered_by
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\details \details_check12{covered_by, is inside or on border}, \brief_strategy. \details_strategy_reasons
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\tparam Geometry1 \tparam_geometry
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\tparam Geometry2 \tparam_geometry
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\param geometry1 \param_geometry which might be inside or on the border of the second geometry
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\param geometry2 \param_geometry which might cover the first geometry
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\param strategy strategy to be used
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\return true if geometry1 is inside of or on the border of geometry2,
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else false
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\qbk{distinguish,with strategy}
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\qbk{[include reference/algorithms/covered_by.qbk]}
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*/
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template<typename Geometry1, typename Geometry2, typename Strategy>
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inline bool covered_by(Geometry1 const& geometry1, Geometry2 const& geometry2,
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Strategy const& strategy)
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{
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concept::within::check
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<
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typename tag<Geometry1>::type,
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typename tag<Geometry2>::type,
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typename tag_cast<typename tag<Geometry2>::type, areal_tag>::type,
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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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assert_dimension_equal<Geometry1, Geometry2>();
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return dispatch::covered_by
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<
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Geometry1,
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Geometry2
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>::apply(geometry1, geometry2, strategy);
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}
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}} // namespace boost::geometry
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#endif // BOOST_GEOMETRY_ALGORITHMS_COVERED_BY_HPP
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