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- // Boost.Geometry (aka GGL, Generic Geometry Library)
- // 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_TRANSFORM_UNITS_HPP
- #define BOOST_GEOMETRY_ALGORITHMS_DETAIL_ENVELOPE_TRANSFORM_UNITS_HPP
- #include <cstddef>
- #include <boost/geometry/core/tag.hpp>
- #include <boost/geometry/core/tags.hpp>
- #include <boost/geometry/strategies/strategy_transform.hpp>
- #include <boost/geometry/views/detail/indexed_point_view.hpp>
- #include <boost/geometry/views/detail/two_dimensional_view.hpp>
- #include <boost/geometry/algorithms/not_implemented.hpp>
- #include <boost/geometry/algorithms/transform.hpp>
- namespace boost { namespace geometry
- {
- #ifndef DOXYGEN_NO_DETAIL
- namespace detail { namespace envelope
- {
- template
- <
- typename GeometryIn,
- typename GeometryOut,
- typename TagIn = typename tag<GeometryIn>::type,
- typename TagOut = typename tag<GeometryOut>::type
- >
- struct transform_units_impl
- : not_implemented<TagIn, TagOut>
- {};
- template <typename PointIn, typename PointOut>
- struct transform_units_impl<PointIn, PointOut, point_tag, point_tag>
- {
- static inline void apply(PointIn const& point_in, PointOut& point_out)
- {
- detail::two_dimensional_view<PointIn const> view_in(point_in);
- detail::two_dimensional_view<PointOut> view_out(point_out);
- geometry::transform(view_in, view_out);
- }
- };
- template <typename BoxIn, typename BoxOut>
- struct transform_units_impl<BoxIn, BoxOut, box_tag, box_tag>
- {
- template <std::size_t Index>
- static inline void apply(BoxIn const& box_in, BoxOut& box_out)
- {
- typedef detail::indexed_point_view<BoxIn const, Index> view_in_type;
- typedef detail::indexed_point_view<BoxOut, Index> view_out_type;
- view_in_type view_in(box_in);
- view_out_type view_out(box_out);
- transform_units_impl
- <
- view_in_type, view_out_type
- >::apply(view_in, view_out);
- }
- static inline void apply(BoxIn const& box_in, BoxOut& box_out)
- {
- apply<min_corner>(box_in, box_out);
- apply<max_corner>(box_in, box_out);
- }
- };
- // Short utility to transform the units of the first two coordinates of
- // geometry_in to the units of geometry_out
- template <typename GeometryIn, typename GeometryOut>
- inline void transform_units(GeometryIn const& geometry_in,
- GeometryOut& geometry_out)
- {
- transform_units_impl
- <
- GeometryIn, GeometryOut
- >::apply(geometry_in, geometry_out);
- }
- }} // namespace detail::envelope
- #endif // DOXYGEN_NO_DETAIL
- }} // namespace boost:geometry
- #endif // BOOST_GEOMETRY_ALGORITHMS_DETAIL_ENVELOPE_TRANSFORM_UNITS_HPP
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