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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_VIEWS_DETAIL_RANGE_TYPE_HPP
- #define BOOST_GEOMETRY_VIEWS_DETAIL_RANGE_TYPE_HPP
- #include <boost/mpl/assert.hpp>
- #include <boost/range/value_type.hpp>
- #include <boost/geometry/core/ring_type.hpp>
- #include <boost/geometry/core/tag.hpp>
- #include <boost/geometry/core/tags.hpp>
- #include <boost/geometry/views/box_view.hpp>
- namespace boost { namespace geometry
- {
- #ifndef DOXYGEN_NO_DISPATCH
- namespace dispatch
- {
- template <typename Geometry,
- typename Tag = typename tag<Geometry>::type>
- struct range_type
- {
- BOOST_MPL_ASSERT_MSG
- (
- false, NOT_OR_NOT_YET_IMPLEMENTED_FOR_THIS_GEOMETRY_TYPE
- , (types<Geometry>)
- );
- };
- template <typename Geometry>
- struct range_type<Geometry, ring_tag>
- {
- typedef Geometry type;
- };
- template <typename Geometry>
- struct range_type<Geometry, linestring_tag>
- {
- typedef Geometry type;
- };
- template <typename Geometry>
- struct range_type<Geometry, polygon_tag>
- {
- typedef typename ring_type<Geometry>::type type;
- };
- template <typename Geometry>
- struct range_type<Geometry, box_tag>
- {
- typedef box_view<Geometry> type;
- };
- // multi-point acts itself as a range
- template <typename Geometry>
- struct range_type<Geometry, multi_point_tag>
- {
- typedef Geometry type;
- };
- template <typename Geometry>
- struct range_type<Geometry, multi_linestring_tag>
- {
- typedef typename boost::range_value<Geometry>::type type;
- };
- template <typename Geometry>
- struct range_type<Geometry, multi_polygon_tag>
- {
- // Call its single-version
- typedef typename dispatch::range_type
- <
- typename boost::range_value<Geometry>::type
- >::type type;
- };
- } // namespace dispatch
- #endif // DOXYGEN_NO_DISPATCH
- // Will probably be replaced by the more generic "view_as", therefore in detail
- namespace detail
- {
- /*!
- \brief Meta-function defining a type which is a boost-range.
- \details
- - For linestrings and rings, it defines the type itself.
- - For polygons it defines the ring type.
- - For multi-points, it defines the type itself
- - For multi-polygons and multi-linestrings, it defines the single-version
- (so in the end the linestring and ring-type-of-multi-polygon)
- \ingroup iterators
- */
- template <typename Geometry>
- struct range_type
- {
- typedef typename dispatch::range_type
- <
- Geometry
- >::type type;
- };
- }
- }} // namespace boost::geometry
- #endif // BOOST_GEOMETRY_VIEWS_DETAIL_RANGE_TYPE_HPP
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