mirror of
https://github.com/ecency/ecency-mobile.git
synced 2024-12-30 17:14:22 +03:00
107 lines
3.3 KiB
C++
107 lines
3.3 KiB
C++
// 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 2013-2014.
|
|
// Modifications copyright (c) 2013-2014, Oracle and/or its affiliates.
|
|
|
|
// Contributed and/or modified by Menelaos Karavelas, 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_INTERSECTS_HPP
|
|
#define BOOST_GEOMETRY_ALGORITHMS_INTERSECTS_HPP
|
|
|
|
|
|
#include <deque>
|
|
|
|
#include <boost/geometry/geometries/concepts/check.hpp>
|
|
#include <boost/geometry/algorithms/detail/overlay/self_turn_points.hpp>
|
|
#include <boost/geometry/algorithms/disjoint.hpp>
|
|
|
|
#include <boost/geometry/policies/robustness/no_rescale_policy.hpp>
|
|
#include <boost/geometry/policies/robustness/segment_ratio_type.hpp>
|
|
|
|
|
|
namespace boost { namespace geometry
|
|
{
|
|
|
|
/*!
|
|
\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)
|
|
{
|
|
concepts::check<Geometry const>();
|
|
|
|
typedef typename geometry::point_type<Geometry>::type point_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;
|
|
|
|
rescale_policy_type robust_policy;
|
|
|
|
detail::disjoint::disjoint_interrupt_policy policy;
|
|
detail::self_get_turn_points::get_turns
|
|
<
|
|
turn_policy
|
|
>::apply(geometry, robust_policy, turns, policy);
|
|
return policy.has_intersections;
|
|
}
|
|
|
|
|
|
/*!
|
|
\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_INTERSECTS_HPP
|