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// Boost.Geometry (aka GGL, Generic Geometry Library)
// Copyright (c) 2007-2015 Barend Gehrels, Amsterdam, the Netherlands.
// This file was modified by Oracle on 2015.
// Modifications copyright (c) 2015 Oracle and/or its affiliates.
// Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
// 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_RESULT_HPP
#define BOOST_GEOMETRY_STRATEGIES_INTERSECTION_RESULT_HPP
#if defined(HAVE_MATRIX_AS_STRING)
#include <string>
#endif
#include <cstddef>
namespace boost { namespace geometry
{
template <typename SegmentRatio>
struct fraction_type
{
SegmentRatio robust_ra; // TODO this can be renamed now to "ra"
SegmentRatio robust_rb;
bool initialized;
inline fraction_type()
: initialized(false)
{}
template <typename Info>
inline void assign(Info const& info)
{
initialized = true;
robust_ra = info.robust_ra;
robust_rb = info.robust_rb;
}
inline void assign(SegmentRatio const& a, SegmentRatio const& b)
{
initialized = true;
robust_ra = a;
robust_rb = b;
}
};
//
/*!
\brief return-type for segment-intersection
\note Set in intersection_points.hpp, from segment_intersection_info
*/
template <typename Point, typename SegmentRatio>
struct segment_intersection_points
{
std::size_t count; // The number of intersection points
// TODO: combine intersections and fractions in one struct
Point intersections[2];
fraction_type<SegmentRatio> fractions[2];
typedef Point point_type;
segment_intersection_points()
: count(0)
{}
};
// All assigned in cart_intersect, passed to intersection_points
template <typename CoordinateType, typename PromotedType, typename SegmentRatio>
struct segment_intersection_info
{
typedef PromotedType promoted_type;
CoordinateType dx_a, dy_a;
CoordinateType dx_b, dy_b;
SegmentRatio robust_ra;
SegmentRatio robust_rb;
};
}} // namespace boost::geometry
#endif // BOOST_GEOMETRY_STRATEGIES_INTERSECTION_RESULT_HPP
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