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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_ALGORITHMS_DETAIL_OVERLAY_INTERSECTION_BOX_BOX_HPP
#define BOOST_GEOMETRY_ALGORITHMS_DETAIL_OVERLAY_INTERSECTION_BOX_BOX_HPP
#include <boost/geometry/core/access.hpp>
#include <boost/geometry/core/coordinate_type.hpp>
namespace boost { namespace geometry
{
#ifndef DOXYGEN_NO_DETAIL
namespace detail { namespace intersection
{
template <std::size_t Dimension, std::size_t DimensionCount>
struct intersection_box_box
{
template
<
typename Box1, typename Box2,
typename RobustPolicy,
typename BoxOut,
typename Strategy
>
static inline bool apply(Box1 const& box1,
Box2 const& box2,
RobustPolicy const& robust_policy,
BoxOut& box_out,
Strategy const& strategy)
{
typedef typename coordinate_type<BoxOut>::type ct;
ct max1 = get<max_corner, Dimension>(box1);
ct min2 = get<min_corner, Dimension>(box2);
if (max1 < min2)
{
return false;
}
ct max2 = get<max_corner, Dimension>(box2);
ct min1 = get<min_corner, Dimension>(box1);
if (max2 < min1)
{
return false;
}
// Set dimensions of output coordinate
set<min_corner, Dimension>(box_out, min1 < min2 ? min2 : min1);
set<max_corner, Dimension>(box_out, max1 > max2 ? max2 : max1);
return intersection_box_box<Dimension + 1, DimensionCount>
::apply(box1, box2, robust_policy, box_out, strategy);
}
};
template <std::size_t DimensionCount>
struct intersection_box_box<DimensionCount, DimensionCount>
{
template
<
typename Box1, typename Box2,
typename RobustPolicy,
typename BoxOut,
typename Strategy
>
static inline bool apply(Box1 const&, Box2 const&,
RobustPolicy const&, BoxOut&, Strategy const&)
{
return true;
}
};
}} // namespace detail::intersection
#endif // DOXYGEN_NO_DETAIL
}} // namespace boost::geometry
#endif // BOOST_GEOMETRY_ALGORITHMS_DETAIL_OVERLAY_INTERSECTION_BOX_BOX_HPP
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