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192 lines
5.1 KiB
C++
192 lines
5.1 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_GEOMETRIES_BOX_HPP
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#define BOOST_GEOMETRY_GEOMETRIES_BOX_HPP
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#include <cstddef>
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#include <boost/concept/assert.hpp>
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#include <boost/config.hpp>
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#include <boost/geometry/algorithms/convert.hpp>
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#include <boost/geometry/geometries/concepts/point_concept.hpp>
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#if defined(BOOST_GEOMETRY_ENABLE_ACCESS_DEBUGGING)
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#include <boost/geometry/core/assert.hpp>
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#endif
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namespace boost { namespace geometry
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{
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namespace model
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{
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/*!
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\brief Class box: defines a box made of two describing points
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\ingroup geometries
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\details Box is always described by a min_corner() and a max_corner() point. If another
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rectangle is used, use linear_ring or polygon.
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\note Boxes are for selections and for calculating the envelope of geometries. Not all algorithms
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are implemented for box. Boxes are also used in Spatial Indexes.
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\tparam Point point type. The box takes a point type as template parameter.
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The point type can be any point type.
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It can be 2D but can also be 3D or more dimensional.
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The box can also take a latlong point type as template parameter.
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\qbk{[include reference/geometries/box.qbk]}
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\qbk{before.synopsis, [heading Model of]}
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\qbk{before.synopsis, [link geometry.reference.concepts.concept_box Box Concept]}
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*/
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template<typename Point>
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class box
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{
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BOOST_CONCEPT_ASSERT( (concepts::Point<Point>) );
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public:
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#if !defined(BOOST_GEOMETRY_ENABLE_ACCESS_DEBUGGING)
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#if !defined(BOOST_NO_CXX11_DEFAULTED_FUNCTIONS)
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/// \constructor_default_no_init
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box() = default;
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#else
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/// \constructor_default_no_init
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inline box()
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{}
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#endif
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#else // defined(BOOST_GEOMETRY_ENABLE_ACCESS_DEBUGGING)
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inline box()
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{
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m_created = 1;
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}
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~box()
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{
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m_created = 0;
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}
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#endif
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/*!
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\brief Constructor taking the minimum corner point and the maximum corner point
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*/
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inline box(Point const& min_corner, Point const& max_corner)
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{
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geometry::convert(min_corner, m_min_corner);
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geometry::convert(max_corner, m_max_corner);
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#if defined(BOOST_GEOMETRY_ENABLE_ACCESS_DEBUGGING)
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m_created = 1;
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#endif
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}
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inline Point const& min_corner() const
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{
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#if defined(BOOST_GEOMETRY_ENABLE_ACCESS_DEBUGGING)
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BOOST_GEOMETRY_ASSERT(m_created == 1);
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#endif
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return m_min_corner;
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}
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inline Point const& max_corner() const
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{
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#if defined(BOOST_GEOMETRY_ENABLE_ACCESS_DEBUGGING)
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BOOST_GEOMETRY_ASSERT(m_created == 1);
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#endif
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return m_max_corner;
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}
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inline Point& min_corner()
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{
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#if defined(BOOST_GEOMETRY_ENABLE_ACCESS_DEBUGGING)
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BOOST_GEOMETRY_ASSERT(m_created == 1);
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#endif
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return m_min_corner;
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}
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inline Point& max_corner()
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{
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#if defined(BOOST_GEOMETRY_ENABLE_ACCESS_DEBUGGING)
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BOOST_GEOMETRY_ASSERT(m_created == 1);
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#endif
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return m_max_corner;
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}
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private:
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Point m_min_corner;
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Point m_max_corner;
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#if defined(BOOST_GEOMETRY_ENABLE_ACCESS_DEBUGGING)
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int m_created;
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#endif
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};
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} // namespace model
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// Traits specializations for box above
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#ifndef DOXYGEN_NO_TRAITS_SPECIALIZATIONS
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namespace traits
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{
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template <typename Point>
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struct tag<model::box<Point> >
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{
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typedef box_tag type;
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};
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template <typename Point>
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struct point_type<model::box<Point> >
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{
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typedef Point type;
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};
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template <typename Point, std::size_t Dimension>
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struct indexed_access<model::box<Point>, min_corner, Dimension>
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{
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typedef typename geometry::coordinate_type<Point>::type coordinate_type;
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static inline coordinate_type get(model::box<Point> const& b)
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{
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return geometry::get<Dimension>(b.min_corner());
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}
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static inline void set(model::box<Point>& b, coordinate_type const& value)
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{
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geometry::set<Dimension>(b.min_corner(), value);
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}
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};
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template <typename Point, std::size_t Dimension>
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struct indexed_access<model::box<Point>, max_corner, Dimension>
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{
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typedef typename geometry::coordinate_type<Point>::type coordinate_type;
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static inline coordinate_type get(model::box<Point> const& b)
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{
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return geometry::get<Dimension>(b.max_corner());
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}
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static inline void set(model::box<Point>& b, coordinate_type const& value)
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{
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geometry::set<Dimension>(b.max_corner(), value);
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}
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};
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} // namespace traits
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#endif // DOXYGEN_NO_TRAITS_SPECIALIZATIONS
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}} // namespace boost::geometry
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#endif // BOOST_GEOMETRY_GEOMETRIES_BOX_HPP
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