103 lines
2.8 KiB
C++
103 lines
2.8 KiB
C++
// Boost.Geometry (aka GGL, Generic Geometry Library)
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// Copyright (c) 2007-2011 Barend Gehrels, Amsterdam, the Netherlands.
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// Copyright (c) 2008-2011 Bruno Lalande, Paris, France.
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// Copyright (c) 2009-2011 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_MULTI_ALGORITHMS_TRANSFORM_HPP
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#define BOOST_GEOMETRY_MULTI_ALGORITHMS_TRANSFORM_HPP
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#include <boost/range.hpp>
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#include <boost/geometry/core/mutable_range.hpp>
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#include <boost/geometry/algorithms/transform.hpp>
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#include <boost/geometry/multi/core/tags.hpp>
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namespace boost { namespace geometry
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{
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#ifndef DOXYGEN_NO_DETAIL
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namespace detail { namespace transform
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{
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/*!
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\brief Is able to transform any multi-geometry, calling the single-version as policy
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*/
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template <typename Multi1, typename Multi2, typename Policy>
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struct transform_multi
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{
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template <typename S>
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static inline bool apply(Multi1 const& multi1, Multi2& multi2, S const& strategy)
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{
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traits::resize<Multi2>::apply(multi2, boost::size(multi1));
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typename boost::range_iterator<Multi1 const>::type it1
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= boost::begin(multi1);
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typename boost::range_iterator<Multi2>::type it2
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= boost::begin(multi2);
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for (; it1 != boost::end(multi1); ++it1, ++it2)
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{
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if (! Policy::apply(*it1, *it2, strategy))
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{
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return false;
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}
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}
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return true;
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}
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};
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}} // namespace detail::transform
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#endif // DOXYGEN_NO_DETAIL
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#ifndef DOXYGEN_NO_DISPATCH
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namespace dispatch
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{
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template <typename Multi1, typename Multi2, typename Strategy>
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struct transform
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<
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multi_tag, multi_tag,
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Multi1, Multi2,
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Strategy
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>
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: detail::transform::transform_multi
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<
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Multi1,
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Multi2,
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transform
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<
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typename single_tag_of
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<
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typename tag<Multi1>::type
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>::type,
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typename single_tag_of
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<
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typename tag<Multi2>::type
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>::type,
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typename boost::range_value<Multi1>::type,
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typename boost::range_value<Multi2>::type,
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Strategy
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>
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>
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{};
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} // namespace dispatch
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#endif // DOXYGEN_NO_DISPATCH
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}} // namespace boost::geometry
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#endif // BOOST_GEOMETRY_MULTI_ALGORITHMS_TRANSFORM_HPP
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