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// Boost.Geometry (aka GGL, Generic Geometry Library)
// Copyright (c) 2007-2012 Barend Gehrels, 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_STRATEGIES_INTERSECTION_HPP
#define BOOST_GEOMETRY_STRATEGIES_INTERSECTION_HPP
#include <boost/geometry/core/point_type.hpp>
#include <boost/geometry/geometries/segment.hpp>
#include <boost/geometry/policies/relate/intersection_points.hpp>
#include <boost/geometry/policies/relate/direction.hpp>
#include <boost/geometry/policies/relate/tupled.hpp>
#include <boost/geometry/strategies/side.hpp>
#include <boost/geometry/strategies/intersection_result.hpp>
#include <boost/geometry/strategies/cartesian/cart_intersect.hpp>
#include <boost/geometry/policies/robustness/segment_ratio_type.hpp>
namespace boost { namespace geometry
{
/*!
\brief "compound strategy", containing a segment-intersection-strategy
and a side-strategy
*/
template
<
typename Tag,
typename Geometry1,
typename Geometry2,
typename IntersectionPoint,
typename RobustPolicy,
typename CalculationType = void
>
struct strategy_intersection
{
private :
// for development BOOST_STATIC_ASSERT((! boost::is_same<RobustPolicy, void>::type::value));
typedef typename geometry::point_type<Geometry1>::type point1_type;
typedef typename geometry::point_type<Geometry2>::type point2_type;
typedef typename model::referring_segment<point1_type const> segment1_type;
typedef typename model::referring_segment<point2_type const> segment2_type;
typedef segment_intersection_points
<
IntersectionPoint,
typename geometry::segment_ratio_type
<
IntersectionPoint, RobustPolicy
>::type
> ip_type;
public:
typedef strategy::intersection::relate_cartesian_segments
<
policies::relate::segments_tupled
<
policies::relate::segments_intersection_points
<
ip_type
> ,
policies::relate::segments_direction
>,
CalculationType
> segment_intersection_strategy_type;
typedef typename strategy::side::services::default_strategy
<
Tag,
CalculationType
>::type side_strategy_type;
typedef RobustPolicy rescale_policy_type;
};
// Version for box_box intersection or other detail calls not needing a strategy
struct strategy_intersection_empty {};
}} // namespace boost::geometry
#endif // BOOST_GEOMETRY_STRATEGIES_INTERSECTION_HPP
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