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// 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;
// TODO: skip_adjacent should be set to false
detail::self_get_turn_points::get_turns
<
false, turn_policy
>::apply(geometry, strategy, robust_policy, turns, policy, 0, true);
return policy.has_intersections;
}
};
}} // namespace detail::intersects
#endif // DOXYGEN_NO_DETAIL
}} // namespace boost::geometry
#endif // BOOST_GEOMETRY_ALGORITHMS_DETAIL_INTERSECTS_IMPLEMENTATION_HPP
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