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Diffstat (limited to 'boost/geometry/algorithms/detail/envelope/point.hpp')
-rw-r--r-- | boost/geometry/algorithms/detail/envelope/point.hpp | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/boost/geometry/algorithms/detail/envelope/point.hpp b/boost/geometry/algorithms/detail/envelope/point.hpp new file mode 100644 index 0000000000..e914e7e8a0 --- /dev/null +++ b/boost/geometry/algorithms/detail/envelope/point.hpp @@ -0,0 +1,127 @@ +// Boost.Geometry (aka GGL, Generic Geometry Library) + +// Copyright (c) 2007-2015 Barend Gehrels, Amsterdam, the Netherlands. +// Copyright (c) 2008-2015 Bruno Lalande, Paris, France. +// Copyright (c) 2009-2015 Mateusz Loskot, London, UK. + +// This file was modified by Oracle on 2015. +// Modifications copyright (c) 2015, Oracle and/or its affiliates. + +// Contributed and/or modified by Menelaos Karavelas, on behalf of Oracle + +// Distributed under 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_ENVELOPE_POINT_HPP +#define BOOST_GEOMETRY_ALGORITHMS_DETAIL_ENVELOPE_POINT_HPP + +#include <cstddef> + +#include <boost/geometry/core/access.hpp> +#include <boost/geometry/core/cs.hpp> +#include <boost/geometry/core/coordinate_dimension.hpp> +#include <boost/geometry/core/coordinate_system.hpp> +#include <boost/geometry/core/tags.hpp> + +#include <boost/geometry/views/detail/indexed_point_view.hpp> + +#include <boost/geometry/algorithms/detail/convert_point_to_point.hpp> +#include <boost/geometry/algorithms/detail/normalize.hpp> + +#include <boost/geometry/algorithms/detail/envelope/transform_units.hpp> + +#include <boost/geometry/algorithms/dispatch/envelope.hpp> + + +namespace boost { namespace geometry +{ + +#ifndef DOXYGEN_NO_DETAIL +namespace detail { namespace envelope +{ + + +template <std::size_t Dimension, std::size_t DimensionCount> +struct envelope_one_point +{ + template <std::size_t Index, typename Point, typename Box> + static inline void apply(Point const& point, Box& mbr) + { + detail::indexed_point_view<Box, Index> box_corner(mbr); + detail::conversion::point_to_point + < + Point, + detail::indexed_point_view<Box, Index>, + Dimension, + DimensionCount + >::apply(point, box_corner); + } + + template <typename Point, typename Box> + static inline void apply(Point const& point, Box& mbr) + { + apply<min_corner>(point, mbr); + apply<max_corner>(point, mbr); + } +}; + + +struct envelope_point_on_spheroid +{ + template<typename Point, typename Box> + static inline void apply(Point const& point, Box& mbr) + { + Point normalized_point = detail::return_normalized<Point>(point); + + typename point_type<Box>::type box_point; + + // transform units of input point to units of a box point + transform_units(normalized_point, box_point); + + geometry::set<min_corner, 0>(mbr, geometry::get<0>(box_point)); + geometry::set<min_corner, 1>(mbr, geometry::get<1>(box_point)); + + geometry::set<max_corner, 0>(mbr, geometry::get<0>(box_point)); + geometry::set<max_corner, 1>(mbr, geometry::get<1>(box_point)); + + envelope_one_point + < + 2, dimension<Point>::value + >::apply(normalized_point, mbr); + } +}; + + +}} // namespace detail::envelope +#endif // DOXYGEN_NO_DETAIL + +#ifndef DOXYGEN_NO_DISPATCH +namespace dispatch +{ + + +template <typename Point, typename CS_Tag> +struct envelope<Point, point_tag, CS_Tag> + : detail::envelope::envelope_one_point<0, dimension<Point>::value> +{}; + + +template <typename Point> +struct envelope<Point, point_tag, spherical_equatorial_tag> + : detail::envelope::envelope_point_on_spheroid +{}; + + +template <typename Point> +struct envelope<Point, point_tag, geographic_tag> + : detail::envelope::envelope_point_on_spheroid +{}; + + +} // namespace dispatch +#endif // DOXYGEN_NO_DISPATCH + +}} // namespace boost::geometry + +#endif // BOOST_GEOMETRY_ALGORITHMS_DETAIL_ENVELOPE_POINT_HPP |