87 lines
2.3 KiB
C++
87 lines
2.3 KiB
C++
// Boost.Geometry (aka GGL, Generic Geometry Library)
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// Copyright (c) 2015, Oracle and/or its affiliates.
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// Contributed and/or modified by Menelaos Karavelas, on behalf of Oracle
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// Distributed under the Boost Software License, Version 1.0.
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// (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_DETAIL_ENVELOPE_INITIALIZE_HPP
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#define BOOST_GEOMETRY_ALGORITHMS_DETAIL_ENVELOPE_INITIALIZE_HPP
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#include <cstddef>
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#include <boost/numeric/conversion/bounds.hpp>
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#include <boost/geometry/core/access.hpp>
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#include <boost/geometry/core/coordinate_dimension.hpp>
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#include <boost/geometry/core/coordinate_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 <std::size_t Dimension, std::size_t DimensionCount>
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struct initialize_loop
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{
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template <typename Box, typename CoordinateType>
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static inline void apply(Box& box,
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CoordinateType min_value,
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CoordinateType max_value)
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{
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geometry::set<min_corner, Dimension>(box, min_value);
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geometry::set<max_corner, Dimension>(box, max_value);
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initialize_loop
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<
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Dimension + 1, DimensionCount
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>::apply(box, min_value, max_value);
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}
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};
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template <std::size_t DimensionCount>
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struct initialize_loop<DimensionCount, DimensionCount>
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{
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template <typename Box, typename CoordinateType>
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static inline void apply(Box&, CoordinateType, CoordinateType)
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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 Box,
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std::size_t Dimension = 0,
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std::size_t DimensionCount = dimension<Box>::value
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>
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struct initialize
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{
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typedef typename coordinate_type<Box>::type coordinate_type;
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static inline void apply(Box& box,
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coordinate_type min_value
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= boost::numeric::bounds<coordinate_type>::highest(),
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coordinate_type max_value
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= boost::numeric::bounds<coordinate_type>::lowest())
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{
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initialize_loop
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<
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Dimension, DimensionCount
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>::apply(box, min_value, max_value);
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}
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};
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}} // namespace detail::envelope
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#endif // DOXYGEN_NO_DETAIL
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}} // namespace boost::geometry
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#endif // BOOST_GEOMETRY_ALGORITHMS_DETAIL_ENVELOPE_INITIALIZE_HPP
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