// Boost.Geometry (aka GGL, Generic Geometry Library)
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// Copyright (c) 2007-2012 Barend Gehrels, Amsterdam, the Netherlands.
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// Copyright (c) 2008-2012 Bruno Lalande, Paris, France.
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// Copyright (c) 2009-2012 Mateusz Loskot, London, UK.
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// Parts of Boost.Geometry are redesigned from Geodan's Geographic Library
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// (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands.
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// Use, modification and distribution is subject to the Boost Software License,
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// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#ifndef BOOST_GEOMETRY_VIEWS_DETAIL_RANGE_TYPE_HPP
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#define BOOST_GEOMETRY_VIEWS_DETAIL_RANGE_TYPE_HPP
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#include <boost/range/value_type.hpp>
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#include <boost/geometry/core/ring_type.hpp>
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#include <boost/geometry/core/static_assert.hpp>
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#include <boost/geometry/core/tag.hpp>
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#include <boost/geometry/core/tags.hpp>
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#include <boost/geometry/views/box_view.hpp>
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namespace boost { namespace geometry
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{
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#ifndef DOXYGEN_NO_DISPATCH
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namespace dispatch
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{
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template <typename Geometry,
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typename Tag = typename tag<Geometry>::type>
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struct range_type
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{
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BOOST_GEOMETRY_STATIC_ASSERT_FALSE(
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"Not or not yet implemented for this Geometry type.",
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Geometry, Tag);
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};
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template <typename Geometry>
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struct range_type<Geometry, ring_tag>
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{
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typedef Geometry type;
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};
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template <typename Geometry>
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struct range_type<Geometry, linestring_tag>
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{
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typedef Geometry type;
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};
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template <typename Geometry>
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struct range_type<Geometry, polygon_tag>
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{
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typedef typename ring_type<Geometry>::type type;
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};
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template <typename Geometry>
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struct range_type<Geometry, box_tag>
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{
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typedef box_view<Geometry> type;
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};
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// multi-point acts itself as a range
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template <typename Geometry>
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struct range_type<Geometry, multi_point_tag>
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{
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typedef Geometry type;
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};
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template <typename Geometry>
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struct range_type<Geometry, multi_linestring_tag>
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{
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typedef typename boost::range_value<Geometry>::type type;
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};
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template <typename Geometry>
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struct range_type<Geometry, multi_polygon_tag>
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{
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// Call its single-version
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typedef typename dispatch::range_type
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<
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typename boost::range_value<Geometry>::type
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>::type type;
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};
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} // namespace dispatch
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#endif // DOXYGEN_NO_DISPATCH
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// Will probably be replaced by the more generic "view_as", therefore in detail
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namespace detail
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{
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/*!
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\brief Meta-function defining a type which is a boost-range.
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\details
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- For linestrings and rings, it defines the type itself.
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- For polygons it defines the ring type.
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- For multi-points, it defines the type itself
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- For multi-polygons and multi-linestrings, it defines the single-version
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(so in the end the linestring and ring-type-of-multi-polygon)
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\ingroup iterators
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*/
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template <typename Geometry>
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struct range_type
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{
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typedef typename dispatch::range_type
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<
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Geometry
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>::type type;
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};
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}
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}} // namespace boost::geometry
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#endif // BOOST_GEOMETRY_VIEWS_DETAIL_RANGE_TYPE_HPP
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