Added boost header
This commit is contained in:
Christophe Riccio
569
test/external/boost/geometry/algorithms/distance.hpp
vendored
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569
test/external/boost/geometry/algorithms/distance.hpp
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// 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_ALGORITHMS_DISTANCE_HPP
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#define BOOST_GEOMETRY_ALGORITHMS_DISTANCE_HPP
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#include <boost/mpl/if.hpp>
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#include <boost/range.hpp>
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#include <boost/typeof/typeof.hpp>
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#include <boost/static_assert.hpp>
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#include <boost/mpl/assert.hpp>
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#include <boost/geometry/core/cs.hpp>
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#include <boost/geometry/core/closure.hpp>
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#include <boost/geometry/core/reverse_dispatch.hpp>
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#include <boost/geometry/core/tag_cast.hpp>
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#include <boost/geometry/geometries/segment.hpp>
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#include <boost/geometry/geometries/concepts/check.hpp>
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#include <boost/geometry/strategies/distance.hpp>
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#include <boost/geometry/strategies/default_distance_result.hpp>
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#include <boost/geometry/algorithms/assign.hpp>
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#include <boost/geometry/algorithms/within.hpp>
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#include <boost/geometry/views/closeable_view.hpp>
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#include <boost/geometry/util/math.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 distance
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{
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// To avoid spurious namespaces here:
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using strategy::distance::services::return_type;
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template <typename P1, typename P2, typename Strategy>
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struct point_to_point
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{
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static inline typename return_type<Strategy>::type apply(P1 const& p1,
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P2 const& p2, Strategy const& strategy)
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{
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return strategy.apply(p1, p2);
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}
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};
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template<typename Point, typename Segment, typename Strategy>
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struct point_to_segment
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{
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static inline typename return_type<Strategy>::type apply(Point const& point,
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Segment const& segment, Strategy const& strategy)
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{
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typename strategy::distance::services::default_strategy
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<
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segment_tag,
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Point,
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typename point_type<Segment>::type,
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typename cs_tag<Point>::type,
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typename cs_tag<typename point_type<Segment>::type>::type,
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Strategy
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>::type segment_strategy;
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typename point_type<Segment>::type p[2];
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geometry::detail::assign_point_from_index<0>(segment, p[0]);
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geometry::detail::assign_point_from_index<1>(segment, p[1]);
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return segment_strategy.apply(point, p[0], p[1]);
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}
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};
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template
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<
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typename Point,
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typename Range,
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closure_selector Closure,
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typename PPStrategy,
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typename PSStrategy
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>
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struct point_to_range
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{
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typedef typename return_type<PSStrategy>::type return_type;
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static inline return_type apply(Point const& point, Range const& range,
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PPStrategy const& pp_strategy, PSStrategy const& ps_strategy)
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{
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return_type const zero = return_type(0);
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if (boost::size(range) == 0)
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{
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return zero;
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}
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typedef typename closeable_view<Range const, Closure>::type view_type;
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view_type view(range);
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// line of one point: return point distance
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typedef typename boost::range_iterator<view_type const>::type iterator_type;
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iterator_type it = boost::begin(view);
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iterator_type prev = it++;
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if (it == boost::end(view))
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{
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return pp_strategy.apply(point, *boost::begin(view));
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}
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// Create comparable (more efficient) strategy
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typedef typename strategy::distance::services::comparable_type<PSStrategy>::type eps_strategy_type;
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eps_strategy_type eps_strategy = strategy::distance::services::get_comparable<PSStrategy>::apply(ps_strategy);
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// start with first segment distance
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return_type d = eps_strategy.apply(point, *prev, *it);
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return_type rd = ps_strategy.apply(point, *prev, *it);
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// check if other segments are closer
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for (++prev, ++it; it != boost::end(view); ++prev, ++it)
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{
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return_type const ds = ps_strategy.apply(point, *prev, *it);
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if (geometry::math::equals(ds, zero))
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{
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return ds;
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}
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else if (ds < d)
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{
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d = ds;
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rd = ps_strategy.apply(point, *prev, *it);
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}
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}
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return rd;
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}
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};
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template
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<
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typename Point,
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typename Ring,
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closure_selector Closure,
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typename PPStrategy,
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typename PSStrategy
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>
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struct point_to_ring
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{
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typedef std::pair
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<
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typename return_type<PPStrategy>::type, bool
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> distance_containment;
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static inline distance_containment apply(Point const& point,
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Ring const& ring,
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PPStrategy const& pp_strategy, PSStrategy const& ps_strategy)
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{
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return distance_containment
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(
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point_to_range
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<
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Point,
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Ring,
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Closure,
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PPStrategy,
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PSStrategy
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>::apply(point, ring, pp_strategy, ps_strategy),
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geometry::within(point, ring)
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);
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}
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};
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template
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<
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typename Point,
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typename Polygon,
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closure_selector Closure,
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typename PPStrategy,
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typename PSStrategy
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>
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struct point_to_polygon
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{
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typedef typename return_type<PPStrategy>::type return_type;
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typedef std::pair<return_type, bool> distance_containment;
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static inline distance_containment apply(Point const& point,
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Polygon const& polygon,
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PPStrategy const& pp_strategy, PSStrategy const& ps_strategy)
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{
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// Check distance to all rings
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typedef point_to_ring
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<
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Point,
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typename ring_type<Polygon>::type,
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Closure,
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PPStrategy,
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PSStrategy
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> per_ring;
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distance_containment dc = per_ring::apply(point,
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exterior_ring(polygon), pp_strategy, ps_strategy);
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typename interior_return_type<Polygon const>::type rings
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= interior_rings(polygon);
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for (BOOST_AUTO_TPL(it, boost::begin(rings)); it != boost::end(rings); ++it)
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{
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distance_containment dcr = per_ring::apply(point,
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*it, pp_strategy, ps_strategy);
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if (dcr.first < dc.first)
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{
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dc.first = dcr.first;
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}
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// If it was inside, and also inside inner ring,
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// turn off the inside-flag, it is outside the polygon
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if (dc.second && dcr.second)
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{
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dc.second = false;
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}
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}
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return dc;
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}
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};
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}} // namespace detail::distance
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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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using strategy::distance::services::return_type;
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template
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<
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typename GeometryTag1, typename GeometryTag2,
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typename Geometry1, typename Geometry2,
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typename StrategyTag, typename Strategy
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>
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struct distance
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{
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BOOST_MPL_ASSERT_MSG
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(
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false, NOT_OR_NOT_YET_IMPLEMENTED_FOR_THIS_GEOMETRY_TYPE
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, (types<Geometry1, Geometry2>)
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);
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};
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template <typename P1, typename P2, typename Strategy>
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struct distance
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<
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point_tag, point_tag,
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P1, P2,
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strategy_tag_distance_point_point, Strategy
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>
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: detail::distance::point_to_point<P1, P2, Strategy>
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{};
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// Point-line version 1, where point-point strategy is specified
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template <typename Point, typename Linestring, typename Strategy>
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struct distance
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<
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point_tag, linestring_tag,
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Point, Linestring,
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strategy_tag_distance_point_point, Strategy
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>
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{
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static inline typename return_type<Strategy>::type apply(Point const& point,
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Linestring const& linestring,
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Strategy const& strategy)
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{
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typedef typename strategy::distance::services::default_strategy
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<
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segment_tag,
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Point,
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typename point_type<Linestring>::type
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>::type ps_strategy_type;
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return detail::distance::point_to_range
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<
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Point, Linestring, closed, Strategy, ps_strategy_type
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>::apply(point, linestring, strategy, ps_strategy_type());
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}
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};
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// Point-line version 2, where point-segment strategy is specified
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template <typename Point, typename Linestring, typename Strategy>
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struct distance
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<
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point_tag, linestring_tag,
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Point, Linestring,
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strategy_tag_distance_point_segment, Strategy
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>
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{
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static inline typename return_type<Strategy>::type apply(Point const& point,
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Linestring const& linestring,
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Strategy const& strategy)
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{
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typedef typename Strategy::point_strategy_type pp_strategy_type;
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return detail::distance::point_to_range
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<
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Point, Linestring, closed, pp_strategy_type, Strategy
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>::apply(point, linestring, pp_strategy_type(), strategy);
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}
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};
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// Point-ring , where point-segment strategy is specified
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template <typename Point, typename Ring, typename Strategy>
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struct distance
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<
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point_tag, ring_tag,
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Point, Ring,
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strategy_tag_distance_point_point, Strategy
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>
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{
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typedef typename return_type<Strategy>::type return_type;
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static inline return_type apply(Point const& point,
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Ring const& ring,
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Strategy const& strategy)
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{
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typedef typename strategy::distance::services::default_strategy
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<
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segment_tag,
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Point,
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typename point_type<Ring>::type
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>::type ps_strategy_type;
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std::pair<return_type, bool>
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dc = detail::distance::point_to_ring
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<
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Point, Ring,
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geometry::closure<Ring>::value,
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Strategy, ps_strategy_type
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>::apply(point, ring, strategy, ps_strategy_type());
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return dc.second ? return_type(0) : dc.first;
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}
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};
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// Point-polygon , where point-segment strategy is specified
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template <typename Point, typename Polygon, typename Strategy>
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struct distance
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<
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point_tag, polygon_tag,
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Point, Polygon,
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strategy_tag_distance_point_point, Strategy
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>
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{
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typedef typename return_type<Strategy>::type return_type;
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static inline return_type apply(Point const& point,
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Polygon const& polygon,
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Strategy const& strategy)
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{
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typedef typename strategy::distance::services::default_strategy
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<
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segment_tag,
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Point,
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typename point_type<Polygon>::type
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>::type ps_strategy_type;
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std::pair<return_type, bool>
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dc = detail::distance::point_to_polygon
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<
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Point, Polygon,
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geometry::closure<Polygon>::value,
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Strategy, ps_strategy_type
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>::apply(point, polygon, strategy, ps_strategy_type());
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return dc.second ? return_type(0) : dc.first;
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}
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};
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// Point-segment version 1, with point-point strategy
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template <typename Point, typename Segment, typename Strategy>
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struct distance
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<
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point_tag, segment_tag,
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Point, Segment,
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strategy_tag_distance_point_point, Strategy
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> : detail::distance::point_to_segment<Point, Segment, Strategy>
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{};
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// Point-segment version 2, with point-segment strategy
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template <typename Point, typename Segment, typename Strategy>
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struct distance
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<
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point_tag, segment_tag,
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Point, Segment,
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strategy_tag_distance_point_segment, Strategy
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>
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{
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static inline typename return_type<Strategy>::type apply(Point const& point,
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Segment const& segment, Strategy const& strategy)
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{
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typename point_type<Segment>::type p[2];
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geometry::detail::assign_point_from_index<0>(segment, p[0]);
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geometry::detail::assign_point_from_index<1>(segment, p[1]);
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return strategy.apply(point, p[0], p[1]);
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}
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};
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// Strictly spoken this might be in namespace <impl> again
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template
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<
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typename GeometryTag1, typename GeometryTag2,
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typename G1, typename G2,
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typename StrategyTag, typename Strategy
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>
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struct distance_reversed
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{
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static inline typename return_type<Strategy>::type apply(G1 const& g1,
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G2 const& g2, Strategy const& strategy)
|
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{
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return distance
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<
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GeometryTag2, GeometryTag1,
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G2, G1,
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StrategyTag, Strategy
|
||||
>::apply(g2, g1, strategy);
|
||||
}
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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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/*!
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\brief \brief_calc2{distance} \brief_strategy
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\ingroup distance
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\details
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\details \details_calc{area}. \brief_strategy. \details_strategy_reasons
|
||||
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\tparam Geometry1 \tparam_geometry
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\tparam Geometry2 \tparam_geometry
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\tparam Strategy \tparam_strategy{Distance}
|
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\param geometry1 \param_geometry
|
||||
\param geometry2 \param_geometry
|
||||
\param strategy \param_strategy{distance}
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\return \return_calc{distance}
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\note The strategy can be a point-point strategy. In case of distance point-line/point-polygon
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it may also be a point-segment strategy.
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||||
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||||
\qbk{distinguish,with strategy}
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||||
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\qbk{
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[heading Available Strategies]
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\* [link geometry.reference.strategies.strategy_distance_pythagoras Pythagoras (cartesian)]
|
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\* [link geometry.reference.strategies.strategy_distance_haversine Haversine (spherical)]
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||||
\* [link geometry.reference.strategies.strategy_distance_cross_track Cross track (spherical\, point-to-segment)]
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\* [link geometry.reference.strategies.strategy_distance_projected_point Projected point (cartesian\, point-to-segment)]
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\* more (currently extensions): Vincenty\, Andoyer (geographic)
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}
|
||||
*/
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||||
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||||
/*
|
||||
Note, in case of a Compilation Error:
|
||||
if you get:
|
||||
- "Failed to specialize function template ..."
|
||||
- "error: no matching function for call to ..."
|
||||
for distance, it is probably so that there is no specialization
|
||||
for return_type<...> for your strategy.
|
||||
*/
|
||||
template <typename Geometry1, typename Geometry2, typename Strategy>
|
||||
inline typename strategy::distance::services::return_type<Strategy>::type distance(
|
||||
Geometry1 const& geometry1,
|
||||
Geometry2 const& geometry2, Strategy const& strategy)
|
||||
{
|
||||
concept::check<Geometry1 const>();
|
||||
concept::check<Geometry2 const>();
|
||||
|
||||
return boost::mpl::if_
|
||||
<
|
||||
typename geometry::reverse_dispatch<Geometry1, Geometry2>::type,
|
||||
dispatch::distance_reversed
|
||||
<
|
||||
typename tag_cast<typename tag<Geometry1>::type, multi_tag>::type,
|
||||
typename tag_cast<typename tag<Geometry2>::type, multi_tag>::type,
|
||||
Geometry1,
|
||||
Geometry2,
|
||||
typename strategy::distance::services::tag<Strategy>::type,
|
||||
Strategy
|
||||
>,
|
||||
dispatch::distance
|
||||
<
|
||||
typename tag_cast<typename tag<Geometry1>::type, multi_tag>::type,
|
||||
typename tag_cast<typename tag<Geometry2>::type, multi_tag>::type,
|
||||
Geometry1,
|
||||
Geometry2,
|
||||
typename strategy::distance::services::tag<Strategy>::type,
|
||||
Strategy
|
||||
>
|
||||
>::type::apply(geometry1, geometry2, strategy);
|
||||
}
|
||||
|
||||
|
||||
/*!
|
||||
\brief \brief_calc2{distance}
|
||||
\ingroup distance
|
||||
\details The default strategy is used, corresponding to the coordinate system of the geometries
|
||||
\tparam Geometry1 \tparam_geometry
|
||||
\tparam Geometry2 \tparam_geometry
|
||||
\param geometry1 \param_geometry
|
||||
\param geometry2 \param_geometry
|
||||
\return \return_calc{distance}
|
||||
|
||||
\qbk{[include reference/algorithms/distance.qbk]}
|
||||
*/
|
||||
template <typename Geometry1, typename Geometry2>
|
||||
inline typename default_distance_result<Geometry1, Geometry2>::type distance(
|
||||
Geometry1 const& geometry1, Geometry2 const& geometry2)
|
||||
{
|
||||
concept::check<Geometry1 const>();
|
||||
concept::check<Geometry2 const>();
|
||||
|
||||
typedef typename point_type<Geometry1>::type point1_type;
|
||||
typedef typename point_type<Geometry2>::type point2_type;
|
||||
|
||||
// Define a point-point-distance-strategy
|
||||
// for either the normal case, either the reversed case
|
||||
typedef typename boost::mpl::if_c
|
||||
<
|
||||
geometry::reverse_dispatch<Geometry1, Geometry2>::type::value,
|
||||
typename strategy::distance::services::default_strategy
|
||||
<
|
||||
point_tag,
|
||||
point2_type,
|
||||
point1_type
|
||||
>::type,
|
||||
typename strategy::distance::services::default_strategy
|
||||
<
|
||||
point_tag,
|
||||
point1_type,
|
||||
point2_type
|
||||
>::type
|
||||
>::type strategy;
|
||||
|
||||
return distance(geometry1, geometry2, strategy());
|
||||
}
|
||||
|
||||
}} // namespace boost::geometry
|
||||
|
||||
#endif // BOOST_GEOMETRY_ALGORITHMS_DISTANCE_HPP
|
||||
Reference in New Issue
Block a user