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Diffstat (limited to 'boost/geometry/algorithms/detail/disjoint/point_point.hpp')
-rw-r--r-- | boost/geometry/algorithms/detail/disjoint/point_point.hpp | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/boost/geometry/algorithms/detail/disjoint/point_point.hpp b/boost/geometry/algorithms/detail/disjoint/point_point.hpp new file mode 100644 index 0000000000..b1d32bf95e --- /dev/null +++ b/boost/geometry/algorithms/detail/disjoint/point_point.hpp @@ -0,0 +1,112 @@ +// Boost.Geometry (aka GGL, Generic Geometry Library) + +// Copyright (c) 2007-2014 Barend Gehrels, Amsterdam, the Netherlands. +// Copyright (c) 2008-2014 Bruno Lalande, Paris, France. +// Copyright (c) 2009-2014 Mateusz Loskot, London, UK. +// Copyright (c) 2013-2014 Adam Wulkiewicz, Lodz, Poland + +// This file was modified by Oracle on 2013-2014. +// Modifications copyright (c) 2013-2014, Oracle and/or its affiliates. + +// Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle +// Contributed and/or modified by Menelaos Karavelas, on behalf of Oracle + +// 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_ALGORITHMS_DETAIL_DISJOINT_POINT_POINT_HPP +#define BOOST_GEOMETRY_ALGORITHMS_DETAIL_DISJOINT_POINT_POINT_HPP + +#include <cstddef> + +#include <boost/geometry/core/access.hpp> +#include <boost/geometry/core/coordinate_dimension.hpp> +#include <boost/geometry/core/tags.hpp> + +#include <boost/geometry/util/math.hpp> + +#include <boost/geometry/algorithms/dispatch/disjoint.hpp> + + +namespace boost { namespace geometry +{ + + +#ifndef DOXYGEN_NO_DETAIL +namespace detail { namespace disjoint +{ + +template +< + typename Point1, typename Point2, + std::size_t Dimension, std::size_t DimensionCount +> +struct point_point +{ + static inline bool apply(Point1 const& p1, Point2 const& p2) + { + if (! geometry::math::equals(get<Dimension>(p1), get<Dimension>(p2))) + { + return true; + } + return point_point + < + Point1, Point2, + Dimension + 1, DimensionCount + >::apply(p1, p2); + } +}; + + +template <typename Point1, typename Point2, std::size_t DimensionCount> +struct point_point<Point1, Point2, DimensionCount, DimensionCount> +{ + static inline bool apply(Point1 const& , Point2 const& ) + { + return false; + } +}; + + +/*! + \brief Internal utility function to detect of points are disjoint + \note To avoid circular references + */ +template <typename Point1, typename Point2> +inline bool disjoint_point_point(Point1 const& point1, Point2 const& point2) +{ + return point_point + < + Point1, Point2, + 0, dimension<Point1>::type::value + >::apply(point1, point2); +} + + +}} // namespace detail::disjoint +#endif // DOXYGEN_NO_DETAIL + + + + +#ifndef DOXYGEN_NO_DISPATCH +namespace dispatch +{ + + +template <typename Point1, typename Point2, std::size_t DimensionCount> +struct disjoint<Point1, Point2, DimensionCount, point_tag, point_tag, false> + : detail::disjoint::point_point<Point1, Point2, 0, DimensionCount> +{}; + + +} // namespace dispatch +#endif // DOXYGEN_NO_DISPATCH + +}} // namespace boost::geometry + +#endif // BOOST_GEOMETRY_ALGORITHMS_DETAIL_DISJOINT_POINT_POINT_HPP |