diff options
Diffstat (limited to 'boost/geometry/algorithms/detail/intersects')
-rw-r--r-- | boost/geometry/algorithms/detail/intersects/implementation.hpp | 88 | ||||
-rw-r--r-- | boost/geometry/algorithms/detail/intersects/interface.hpp | 115 |
2 files changed, 203 insertions, 0 deletions
diff --git a/boost/geometry/algorithms/detail/intersects/implementation.hpp b/boost/geometry/algorithms/detail/intersects/implementation.hpp new file mode 100644 index 0000000000..2379168e83 --- /dev/null +++ b/boost/geometry/algorithms/detail/intersects/implementation.hpp @@ -0,0 +1,88 @@ +// Boost.Geometry (aka GGL, Generic Geometry Library) + +// Copyright (c) 2007-2014 Barend Gehrels, Amsterdam, the Netherlands. +// Copyright (c) 2008-2014 Bruno Lalande, Paris, France. +// Copyright (c) 2009-2014 Mateusz Loskot, London, UK. + +// This file was modified by Oracle on 2013-2017. +// Modifications copyright (c) 2013-2017, Oracle and/or its affiliates. + +// Contributed and/or modified by Menelaos Karavelas, on behalf of Oracle +// Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle + +// 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_DETAIL_INTERSECTS_IMPLEMENTATION_HPP +#define BOOST_GEOMETRY_ALGORITHMS_DETAIL_INTERSECTS_IMPLEMENTATION_HPP + + +#include <deque> + +#include <boost/geometry/algorithms/detail/intersects/interface.hpp> +#include <boost/geometry/algorithms/detail/disjoint/implementation.hpp> + +#include <boost/geometry/algorithms/detail/overlay/self_turn_points.hpp> +#include <boost/geometry/policies/disjoint_interrupt_policy.hpp> +#include <boost/geometry/policies/robustness/no_rescale_policy.hpp> +#include <boost/geometry/policies/robustness/segment_ratio_type.hpp> + +#include <boost/geometry/strategies/relate.hpp> + + +namespace boost { namespace geometry +{ + +#ifndef DOXYGEN_NO_DETAIL +namespace detail { namespace intersects +{ + +template <typename Geometry> +struct self_intersects +{ + static bool apply(Geometry const& geometry) + { + concepts::check<Geometry const>(); + + typedef typename geometry::point_type<Geometry>::type point_type; + typedef typename strategy::relate::services::default_strategy + < + Geometry, Geometry + >::type strategy_type; + typedef detail::no_rescale_policy rescale_policy_type; + + typedef detail::overlay::turn_info + < + point_type, + typename segment_ratio_type<point_type, rescale_policy_type>::type + > turn_info; + + std::deque<turn_info> turns; + + typedef detail::overlay::get_turn_info + < + detail::overlay::assign_null_policy + > turn_policy; + + strategy_type strategy; + rescale_policy_type robust_policy; + + detail::disjoint::disjoint_interrupt_policy policy; + detail::self_get_turn_points::get_turns + < + false, turn_policy + >::apply(geometry, strategy, robust_policy, turns, policy, 0); + return policy.has_intersections; + } +}; + +}} // namespace detail::intersects +#endif // DOXYGEN_NO_DETAIL + +}} // namespace boost::geometry + +#endif // BOOST_GEOMETRY_ALGORITHMS_DETAIL_INTERSECTS_IMPLEMENTATION_HPP diff --git a/boost/geometry/algorithms/detail/intersects/interface.hpp b/boost/geometry/algorithms/detail/intersects/interface.hpp new file mode 100644 index 0000000000..8940a426f3 --- /dev/null +++ b/boost/geometry/algorithms/detail/intersects/interface.hpp @@ -0,0 +1,115 @@ +// Boost.Geometry (aka GGL, Generic Geometry Library) + +// Copyright (c) 2007-2014 Barend Gehrels, Amsterdam, the Netherlands. +// Copyright (c) 2008-2014 Bruno Lalande, Paris, France. +// Copyright (c) 2009-2014 Mateusz Loskot, London, UK. + +// This file was modified by Oracle on 2013-2017. +// Modifications copyright (c) 2013-2017, Oracle and/or its affiliates. + +// Contributed and/or modified by Menelaos Karavelas, on behalf of Oracle +// Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle + +// 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_DETAIL_INTERSECTS_INTERFACE_HPP +#define BOOST_GEOMETRY_ALGORITHMS_DETAIL_INTERSECTS_INTERFACE_HPP + + +#include <boost/geometry/geometries/concepts/check.hpp> + +#include <boost/geometry/algorithms/detail/disjoint/interface.hpp> + + +namespace boost { namespace geometry +{ + +#ifndef DOXYGEN_NO_DETAIL +namespace detail { namespace intersects +{ + +// Forward declaration +template <typename Geometry> +struct self_intersects; + +}} // namespace detail::intersects +#endif // DOXYGEN_NO_DETAIL + + +/*! +\brief \brief_check{has at least one intersection (crossing or self-tangency)} +\note This function can be called for one geometry (self-intersection) and + also for two geometries (intersection) +\ingroup intersects +\tparam Geometry \tparam_geometry +\param geometry \param_geometry +\return \return_check{is self-intersecting} + +\qbk{distinguish,one geometry} +\qbk{[def __one_parameter__]} +\qbk{[include reference/algorithms/intersects.qbk]} +*/ +template <typename Geometry> +inline bool intersects(Geometry const& geometry) +{ + return detail::intersects::self_intersects<Geometry>::apply(geometry); +} + + +/*! +\brief \brief_check2{have at least one intersection} +\ingroup intersects +\tparam Geometry1 \tparam_geometry +\tparam Geometry2 \tparam_geometry +\tparam Strategy \tparam_strategy{Intersects} +\param geometry1 \param_geometry +\param geometry2 \param_geometry +\param strategy \param_strategy{intersects} +\return \return_check2{intersect each other} + +\qbk{distinguish,with strategy} +\qbk{[include reference/algorithms/intersects.qbk]} + */ +template <typename Geometry1, typename Geometry2, typename Strategy> +inline bool intersects(Geometry1 const& geometry1, + Geometry2 const& geometry2, + Strategy const& strategy) +{ + concepts::check<Geometry1 const>(); + concepts::check<Geometry2 const>(); + + return ! geometry::disjoint(geometry1, geometry2, strategy); +} + + +/*! +\brief \brief_check2{have at least one intersection} +\ingroup intersects +\tparam Geometry1 \tparam_geometry +\tparam Geometry2 \tparam_geometry +\param geometry1 \param_geometry +\param geometry2 \param_geometry +\return \return_check2{intersect each other} + +\qbk{distinguish,two geometries} +\qbk{[include reference/algorithms/intersects.qbk]} + */ +template <typename Geometry1, typename Geometry2> +inline bool intersects(Geometry1 const& geometry1, Geometry2 const& geometry2) +{ + concepts::check<Geometry1 const>(); + concepts::check<Geometry2 const>(); + + return ! geometry::disjoint(geometry1, geometry2); +} + + + +}} // namespace boost::geometry + +#endif // BOOST_GEOMETRY_ALGORITHMS_DETAIL_INTERSECTS_INTERFACE_HPP |