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// Boost.Geometry (aka GGL, Generic Geometry Library)
// Copyright (c) 2013 Barend Gehrels, Amsterdam, the Netherlands.
// Copyright (c) 2013 Bruno Lalande, Paris, France.
// Copyright (c) 2013 Mateusz Loskot, London, UK.
// Copyright (c) 2013 Adam Wulkiewicz, Lodz, Poland.
// 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_RECALCULATE_HPP
#define BOOST_GEOMETRY_ALGORITHMS_DETAIL_RECALCULATE_HPP
#include <cstddef>
#include <boost/concept/requires.hpp>
#include <boost/concept_check.hpp>
#include <boost/mpl/assert.hpp>
#include <boost/mpl/if.hpp>
#include <boost/numeric/conversion/bounds.hpp>
#include <boost/numeric/conversion/cast.hpp>
#include <boost/type_traits.hpp>
#include <boost/geometry/arithmetic/arithmetic.hpp>
#include <boost/geometry/algorithms/append.hpp>
#include <boost/geometry/algorithms/clear.hpp>
#include <boost/geometry/core/access.hpp>
#include <boost/geometry/core/interior_rings.hpp>
#include <boost/geometry/core/exterior_ring.hpp>
#include <boost/geometry/core/tags.hpp>
#include <boost/geometry/geometries/concepts/check.hpp>
namespace boost { namespace geometry
{
#ifndef DOXYGEN_NO_DETAIL
namespace detail { namespace recalculate
{
template <std::size_t Dimension>
struct recalculate_point
{
template <typename Point1, typename Point2, typename Strategy>
static inline void apply(Point1& point1, Point2 const& point2, Strategy const& strategy)
{
std::size_t const dim = Dimension - 1;
geometry::set<dim>(point1, strategy.template apply<dim>(geometry::get<dim>(point2)));
recalculate_point<dim>::apply(point1, point2, strategy);
}
};
template <>
struct recalculate_point<0>
{
template <typename Point1, typename Point2, typename Strategy>
static inline void apply(Point1&, Point2 const&, Strategy const&)
{
}
};
template <std::size_t Dimension>
struct recalculate_indexed
{
template <typename Geometry1, typename Geometry2, typename Strategy>
static inline void apply(Geometry1& geometry1, Geometry2 const& geometry2, Strategy const& strategy)
{
// Do it for both indices in one dimension
static std::size_t const dim = Dimension - 1;
geometry::set<0, dim>(geometry1, strategy.template apply<dim>(geometry::get<0, dim>(geometry2)));
geometry::set<1, dim>(geometry1, strategy.template apply<dim>(geometry::get<1, dim>(geometry2)));
recalculate_indexed<dim>::apply(geometry1, geometry2, strategy);
}
};
template <>
struct recalculate_indexed<0>
{
template <typename Geometry1, typename Geometry2, typename Strategy>
static inline void apply(Geometry1& , Geometry2 const& , Strategy const& )
{
}
};
struct range_to_range
{
template
<
typename Range1,
typename Range2,
typename Strategy
>
static inline void apply(Range1& destination, Range2 const& source,
Strategy const& strategy)
{
typedef typename geometry::point_type<Range2>::type point_type;
typedef recalculate_point<geometry::dimension<point_type>::value> per_point;
geometry::clear(destination);
for (typename boost::range_iterator<Range2 const>::type it
= boost::begin(source);
it != boost::end(source);
++it)
{
point_type p;
per_point::apply(p, *it, strategy);
geometry::append(destination, p);
}
}
};
struct polygon_to_polygon
{
private:
template
<
typename IteratorIn,
typename IteratorOut,
typename Strategy
>
static inline void iterate(IteratorIn begin, IteratorIn end,
IteratorOut it_out,
Strategy const& strategy)
{
for (IteratorIn it_in = begin; it_in != end; ++it_in, ++it_out)
{
range_to_range::apply(*it_out, *it_in, strategy);
}
}
template
<
typename InteriorRingsOut,
typename InteriorRingsIn,
typename Strategy
>
static inline void apply_interior_rings(
InteriorRingsOut& interior_rings_out,
InteriorRingsIn const& interior_rings_in,
Strategy const& strategy)
{
traits::resize<InteriorRingsOut>::apply(interior_rings_out,
boost::size(interior_rings_in));
iterate(
boost::begin(interior_rings_in), boost::end(interior_rings_in),
boost::begin(interior_rings_out),
strategy);
}
public:
template
<
typename Polygon1,
typename Polygon2,
typename Strategy
>
static inline void apply(Polygon1& destination, Polygon2 const& source,
Strategy const& strategy)
{
range_to_range::apply(geometry::exterior_ring(destination),
geometry::exterior_ring(source), strategy);
apply_interior_rings(geometry::interior_rings(destination),
geometry::interior_rings(source), strategy);
}
};
}} // namespace detail::recalculate
#endif // DOXYGEN_NO_DETAIL
#ifndef DOXYGEN_NO_DISPATCH
namespace dispatch
{
template
<
typename Geometry1,
typename Geometry2,
typename Tag1 = typename geometry::tag<Geometry1>::type,
typename Tag2 = typename geometry::tag<Geometry2>::type
>
struct recalculate : not_implemented<Tag1, Tag2>
{};
template <typename Point1, typename Point2>
struct recalculate<Point1, Point2, point_tag, point_tag>
: detail::recalculate::recalculate_point<geometry::dimension<Point1>::value>
{};
template <typename Box1, typename Box2>
struct recalculate<Box1, Box2, box_tag, box_tag>
: detail::recalculate::recalculate_indexed<geometry::dimension<Box1>::value>
{};
template <typename Segment1, typename Segment2>
struct recalculate<Segment1, Segment2, segment_tag, segment_tag>
: detail::recalculate::recalculate_indexed<geometry::dimension<Segment1>::value>
{};
template <typename Polygon1, typename Polygon2>
struct recalculate<Polygon1, Polygon2, polygon_tag, polygon_tag>
: detail::recalculate::polygon_to_polygon
{};
} // namespace dispatch
#endif // DOXYGEN_NO_DISPATCH
template <typename Geometry1, typename Geometry2, typename Strategy>
inline void recalculate(Geometry1& geometry1, Geometry2 const& geometry2, Strategy const& strategy)
{
concept::check<Geometry1>();
concept::check<Geometry2 const>();
// static assert dimensions (/types) are the same
dispatch::recalculate<Geometry1, Geometry2>::apply(geometry1, geometry2, strategy);
}
}} // namespace boost::geometry
#endif // BOOST_GEOMETRY_ALGORITHMS_DETAIL_RECALCULATE_HPP
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