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117 lines
2.8 KiB
117 lines
2.8 KiB
// 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_ENVELOPE_HPP |
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#define BOOST_GEOMETRY_MULTI_ALGORITHMS_ENVELOPE_HPP |
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#include <vector> |
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#include <boost/range/metafunctions.hpp> |
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#include <boost/geometry/core/exterior_ring.hpp> |
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#include <boost/geometry/algorithms/envelope.hpp> |
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#include <boost/geometry/multi/core/point_type.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 envelope |
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{ |
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template<typename MultiLinestring, typename Box> |
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struct envelope_multi_linestring |
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{ |
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static inline void apply(MultiLinestring const& mp, Box& mbr) |
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{ |
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assign_inverse(mbr); |
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for (typename boost::range_iterator<MultiLinestring const>::type |
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it = mp.begin(); |
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it != mp.end(); |
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++it) |
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{ |
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envelope_range_additional(*it, mbr); |
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} |
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} |
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}; |
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// version for multi_polygon: outer ring's of all polygons |
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template<typename MultiPolygon, typename Box> |
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struct envelope_multi_polygon |
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{ |
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static inline void apply(MultiPolygon const& mp, Box& mbr) |
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{ |
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assign_inverse(mbr); |
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for (typename boost::range_const_iterator<MultiPolygon>::type |
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it = mp.begin(); |
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it != mp.end(); |
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++it) |
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{ |
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envelope_range_additional(exterior_ring(*it), mbr); |
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} |
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} |
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}; |
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}} // namespace detail::envelope |
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#endif |
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#ifndef DOXYGEN_NO_DISPATCH |
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namespace dispatch |
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{ |
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template |
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< |
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typename Multi, typename Box, |
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typename StrategyLess, typename StrategyGreater |
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> |
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struct envelope<multi_point_tag, box_tag, Multi, Box, StrategyLess, StrategyGreater> |
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: detail::envelope::envelope_range<Multi, Box> |
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{}; |
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template |
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< |
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typename Multi, typename Box, |
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typename StrategyLess, typename StrategyGreater |
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> |
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struct envelope<multi_linestring_tag, box_tag, Multi, Box, StrategyLess, StrategyGreater> |
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: detail::envelope::envelope_multi_linestring<Multi, Box> |
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{}; |
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template |
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< |
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typename Multi, typename Box, |
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typename StrategyLess, typename StrategyGreater |
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> |
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struct envelope<multi_polygon_tag, box_tag, Multi, Box, StrategyLess, StrategyGreater> |
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: detail::envelope::envelope_multi_polygon<Multi, Box> |
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{}; |
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} // namespace dispatch |
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#endif |
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}} // namespace boost::geometry |
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#endif // BOOST_GEOMETRY_MULTI_ALGORITHMS_ENVELOPE_HPP
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