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134 lines
3.6 KiB
134 lines
3.6 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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// Copyright (c) 2008-2011 Bruno Lalande, Paris, France. |
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// Copyright (c) 2009-2011 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/geometry/algorithms/convert.hpp> |
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#include <boost/geometry/geometries/concepts/point_concept.hpp> |
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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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*/ |
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template<typename Point> |
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class box |
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{ |
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BOOST_CONCEPT_ASSERT( (concept::Point<Point>) ); |
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public: |
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inline box() {} |
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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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} |
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inline Point const& min_corner() const { return m_min_corner; } |
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inline Point const& max_corner() const { return m_max_corner; } |
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inline Point& min_corner() { return m_min_corner; } |
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inline Point& max_corner() { return m_max_corner; } |
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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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}; |
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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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