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// Boost.Geometry (aka GGL, Generic Geometry Library)
// Copyright (c) 2007-2012 Barend Gehrels, Amsterdam, the Netherlands.
// Copyright (c) 2008-2012 Bruno Lalande, Paris, France.
// Copyright (c) 2009-2012 Mateusz Loskot, London, UK.
// Copyright (c) 2014 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_VIEWS_DETAIL_INDEXED_POINT_VIEW_HPP
#define BOOST_GEOMETRY_VIEWS_DETAIL_INDEXED_POINT_VIEW_HPP
#include <cstddef>
#include <boost/geometry/core/access.hpp>
#include <boost/geometry/core/coordinate_type.hpp>
#include <boost/geometry/core/coordinate_system.hpp>
#include <boost/geometry/core/coordinate_dimension.hpp>
#include <boost/geometry/util/math.hpp>
namespace boost { namespace geometry
{
namespace detail
{
template <typename Geometry, std::size_t Index>
class indexed_point_view
{
indexed_point_view & operator=(indexed_point_view const&);
public:
typedef typename geometry::point_type<Geometry>::type point_type;
typedef typename geometry::coordinate_type<Geometry>::type coordinate_type;
indexed_point_view(Geometry & geometry)
: m_geometry(geometry)
{}
template <std::size_t Dimension>
inline coordinate_type get() const
{
return geometry::get<Index, Dimension>(m_geometry);
}
template <std::size_t Dimension>
inline void set(coordinate_type const& value)
{
geometry::set<Index, Dimension>(m_geometry, value);
}
private:
Geometry & m_geometry;
};
}
#ifndef DOXYGEN_NO_TRAITS_SPECIALIZATIONS
namespace traits
{
template <typename Geometry, std::size_t Index>
struct tag< detail::indexed_point_view<Geometry, Index> >
{
typedef point_tag type;
};
template <typename Geometry, std::size_t Index>
struct coordinate_type< detail::indexed_point_view<Geometry, Index> >
{
typedef typename geometry::coordinate_type<Geometry>::type type;
};
template <typename Geometry, std::size_t Index>
struct coordinate_system< detail::indexed_point_view<Geometry, Index> >
{
typedef typename geometry::coordinate_system<Geometry>::type type;
};
template <typename Geometry, std::size_t Index>
struct dimension< detail::indexed_point_view<Geometry, Index> >
: geometry::dimension<Geometry>
{};
template<typename Geometry, std::size_t Index, std::size_t Dimension>
struct access< detail::indexed_point_view<Geometry, Index>, Dimension >
{
typedef typename geometry::coordinate_type<Geometry>::type coordinate_type;
static inline coordinate_type get(
detail::indexed_point_view<Geometry, Index> const& p)
{
return p.template get<Dimension>();
}
static inline void set(
detail::indexed_point_view<Geometry, Index> & p,
coordinate_type const& value)
{
p.template set<Dimension>(value);
}
};
} // namespace traits
#endif // DOXYGEN_NO_TRAITS_SPECIALIZATIONS
}} // namespace boost::geometry
#endif // BOOST_GEOMETRY_VIEWS_DETAIL_INDEXED_POINT_VIEW_HPP
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