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Diffstat (limited to 'boost/geometry/algorithms/covered_by.hpp')
| -rw-r--r-- | boost/geometry/algorithms/covered_by.hpp | 195 |
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diff --git a/boost/geometry/algorithms/covered_by.hpp b/boost/geometry/algorithms/covered_by.hpp new file mode 100644 index 0000000000..c3c406c4ca --- /dev/null +++ b/boost/geometry/algorithms/covered_by.hpp @@ -0,0 +1,195 @@ +// Boost.Geometry (aka GGL, Generic Geometry Library) + +// Copyright (c) 2007-2012 Barend Gehrels, Amsterdam, the Netherlands. +// Copyright (c) 2008-2012 Bruno Lalande, Paris, France. +// Copyright (c) 2009-2012 Mateusz Loskot, London, UK. + +// Parts of Boost.Geometry are redesigned from Geodan's Geographic Library +// (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands. + +// 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_COVERED_BY_HPP +#define BOOST_GEOMETRY_ALGORITHMS_COVERED_BY_HPP + + +#include <cstddef> + +#include <boost/geometry/algorithms/not_implemented.hpp> +#include <boost/geometry/algorithms/within.hpp> + +#include <boost/geometry/strategies/cartesian/point_in_box.hpp> +#include <boost/geometry/strategies/cartesian/box_in_box.hpp> + +namespace boost { namespace geometry +{ + +#ifndef DOXYGEN_NO_DISPATCH +namespace dispatch +{ + +template +< + typename Geometry1, + typename Geometry2, + typename Tag1 = typename tag<Geometry1>::type, + typename Tag2 = typename tag<Geometry2>::type +> +struct covered_by: not_implemented<Tag1, Tag2> +{}; + + +template <typename Point, typename Box> +struct covered_by<Point, Box, point_tag, box_tag> +{ + template <typename Strategy> + static inline bool apply(Point const& point, Box const& box, Strategy const& strategy) + { + return strategy.apply(point, box); + } +}; + +template <typename Box1, typename Box2> +struct covered_by<Box1, Box2, box_tag, box_tag> +{ + template <typename Strategy> + static inline bool apply(Box1 const& box1, Box2 const& box2, Strategy const& strategy) + { + assert_dimension_equal<Box1, Box2>(); + return strategy.apply(box1, box2); + } +}; + + + +template <typename Point, typename Ring> +struct covered_by<Point, Ring, point_tag, ring_tag> +{ + template <typename Strategy> + static inline bool apply(Point const& point, Ring const& ring, Strategy const& strategy) + { + return detail::within::point_in_ring + < + Point, + Ring, + order_as_direction<geometry::point_order<Ring>::value>::value, + geometry::closure<Ring>::value, + Strategy + >::apply(point, ring, strategy) >= 0; + } +}; + +template <typename Point, typename Polygon> +struct covered_by<Point, Polygon, point_tag, polygon_tag> +{ + template <typename Strategy> + static inline bool apply(Point const& point, Polygon const& polygon, Strategy const& strategy) + { + return detail::within::point_in_polygon + < + Point, + Polygon, + order_as_direction<geometry::point_order<Polygon>::value>::value, + geometry::closure<Polygon>::value, + Strategy + >::apply(point, polygon, strategy) >= 0; + } +}; + +} // namespace dispatch +#endif // DOXYGEN_NO_DISPATCH + + +/*! +\brief \brief_check12{is inside or on border} +\ingroup covered_by +\details \details_check12{covered_by, is inside or on border}. +\tparam Geometry1 \tparam_geometry +\tparam Geometry2 \tparam_geometry +\param geometry1 \param_geometry which might be inside or on the border of the second geometry +\param geometry2 \param_geometry which might cover the first geometry +\return true if geometry1 is inside of or on the border of geometry2, + else false +\note The default strategy is used for covered_by detection + +\qbk{[include reference/algorithms/covered_by.qbk]} + + */ +template<typename Geometry1, typename Geometry2> +inline bool covered_by(Geometry1 const& geometry1, Geometry2 const& geometry2) +{ + concept::check<Geometry1 const>(); + concept::check<Geometry2 const>(); + assert_dimension_equal<Geometry1, Geometry2>(); + + typedef typename point_type<Geometry1>::type point_type1; + typedef typename point_type<Geometry2>::type point_type2; + + typedef typename strategy::covered_by::services::default_strategy + < + typename tag<Geometry1>::type, + typename tag<Geometry2>::type, + typename tag<Geometry1>::type, + typename tag_cast<typename tag<Geometry2>::type, areal_tag>::type, + typename tag_cast + < + typename cs_tag<point_type1>::type, spherical_tag + >::type, + typename tag_cast + < + typename cs_tag<point_type2>::type, spherical_tag + >::type, + Geometry1, + Geometry2 + >::type strategy_type; + + return dispatch::covered_by + < + Geometry1, + Geometry2 + >::apply(geometry1, geometry2, strategy_type()); +} + +/*! +\brief \brief_check12{is inside or on border} \brief_strategy +\ingroup covered_by +\details \details_check12{covered_by, is inside or on border}, \brief_strategy. \details_strategy_reasons +\tparam Geometry1 \tparam_geometry +\tparam Geometry2 \tparam_geometry +\param geometry1 \param_geometry which might be inside or on the border of the second geometry +\param geometry2 \param_geometry which might cover the first geometry +\param strategy strategy to be used +\return true if geometry1 is inside of or on the border of geometry2, + else false + +\qbk{distinguish,with strategy} +\qbk{[include reference/algorithms/covered_by.qbk]} + +*/ +template<typename Geometry1, typename Geometry2, typename Strategy> +inline bool covered_by(Geometry1 const& geometry1, Geometry2 const& geometry2, + Strategy const& strategy) +{ + concept::within::check + < + typename tag<Geometry1>::type, + typename tag<Geometry2>::type, + typename tag_cast<typename tag<Geometry2>::type, areal_tag>::type, + Strategy + >(); + concept::check<Geometry1 const>(); + concept::check<Geometry2 const>(); + assert_dimension_equal<Geometry1, Geometry2>(); + + return dispatch::covered_by + < + Geometry1, + Geometry2 + >::apply(geometry1, geometry2, strategy); +} + +}} // namespace boost::geometry + +#endif // BOOST_GEOMETRY_ALGORITHMS_COVERED_BY_HPP |