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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.
// Parts of Boost.Geometry are redesigned from Geodan's Geographic Library
// (geolib/GGL), copyright (c) 1995-2010 Geodan, 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_CORE_INTERIOR_TYPE_HPP
#define BOOST_GEOMETRY_CORE_INTERIOR_TYPE_HPP
#include <boost/mpl/assert.hpp>
#include <boost/type_traits/remove_const.hpp>
#include <boost/geometry/core/tag.hpp>
#include <boost/geometry/core/tags.hpp>
namespace boost { namespace geometry
{
namespace traits
{
/*!
\brief Traits class indicating interior container type of a polygon
\details defines inner container type, so the container containing
the interior rings
\ingroup traits
\par Geometries:
- polygon
\par Specializations should provide:
- typedef X type ( e.g. std::vector<myring<P>> )
\tparam Geometry geometry
*/
template <typename Geometry>
struct interior_const_type
{
BOOST_MPL_ASSERT_MSG
(
false, NOT_IMPLEMENTED_FOR_THIS_GEOMETRY_TYPE
, (types<Geometry>)
);
};
template <typename Geometry>
struct interior_mutable_type
{
BOOST_MPL_ASSERT_MSG
(
false, NOT_IMPLEMENTED_FOR_THIS_GEOMETRY_TYPE
, (types<Geometry>)
);
};
} // namespace traits
#ifndef DOXYGEN_NO_DISPATCH
namespace core_dispatch
{
template <typename GeometryTag, typename Geometry>
struct interior_return_type
{
BOOST_MPL_ASSERT_MSG
(
false, NOT_IMPLEMENTED_FOR_THIS_GEOMETRY_TYPE
, (types<Geometry>)
);
};
template <typename Polygon>
struct interior_return_type<polygon_tag, Polygon>
{
typedef typename boost::remove_const<Polygon>::type nc_polygon_type;
typedef typename boost::mpl::if_
<
boost::is_const<Polygon>,
typename traits::interior_const_type<nc_polygon_type>::type,
typename traits::interior_mutable_type<nc_polygon_type>::type
>::type type;
};
template <typename GeometryTag, typename Geometry>
struct interior_type
{
BOOST_MPL_ASSERT_MSG
(
false, NOT_IMPLEMENTED_FOR_THIS_GEOMETRY_TYPE
, (types<Geometry>)
);
};
template <typename Polygon>
struct interior_type<polygon_tag, Polygon>
{
typedef typename boost::remove_reference
<
typename interior_return_type<polygon_tag, Polygon>::type
>::type type;
};
} // namespace core_dispatch
#endif
/*!
\brief \brief_meta{type, interior_type (container type
of inner rings), \meta_geometry_type}
\details Interior rings should be organized as a container
(std::vector, std::deque, boost::array) with
Boost.Range support. This metafunction defines the type
of the container.
\tparam Geometry A type fullfilling the Polygon or MultiPolygon concept.
\ingroup core
\qbk{[include reference/core/interior_type.qbk]}
*/
template <typename Geometry>
struct interior_type
{
typedef typename core_dispatch::interior_type
<
typename tag<Geometry>::type,
Geometry
>::type type;
};
template <typename Geometry>
struct interior_return_type
{
typedef typename core_dispatch::interior_return_type
<
typename tag<Geometry>::type,
Geometry
>::type type;
};
}} // namespace boost::geometry
#endif // BOOST_GEOMETRY_CORE_INTERIOR_TYPE_HPP
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