114 lines
3.1 KiB
C++
114 lines
3.1 KiB
C++
// Boost.Geometry (aka GGL, Generic Geometry Library)
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// Copyright (c) 2007-2015 Barend Gehrels, Amsterdam, the Netherlands.
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// Copyright (c) 2008-2015 Bruno Lalande, Paris, France.
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// Copyright (c) 2009-2015 Mateusz Loskot, London, UK.
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// Copyright (c) 2014-2015 Samuel Debionne, Grenoble, France.
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// This file was modified by Oracle on 2015-2020.
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// Modifications copyright (c) 2015-2020, Oracle and/or its affiliates.
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// Contributed and/or modified by Vissarion Fysikopoulos, on behalf of Oracle
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// Contributed and/or modified by Menelaos Karavelas, on behalf of Oracle
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// Contributed and/or modified by Adam Wulkiewicz, 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_STRATEGY_SPHERICAL_EXPAND_SEGMENT_HPP
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#define BOOST_GEOMETRY_STRATEGY_SPHERICAL_EXPAND_SEGMENT_HPP
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#include <cstddef>
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#include <functional>
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#include <boost/geometry/core/access.hpp>
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#include <boost/geometry/core/tags.hpp>
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#include <boost/geometry/util/select_coordinate_type.hpp>
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#include <boost/geometry/algorithms/detail/envelope/box.hpp>
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#include <boost/geometry/algorithms/detail/envelope/range_of_boxes.hpp>
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#include <boost/geometry/algorithms/detail/envelope/segment.hpp>
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#include <boost/geometry/strategy/expand.hpp>
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#include <boost/geometry/strategy/spherical/envelope_box.hpp>
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#include <boost/geometry/strategy/spherical/envelope_segment.hpp>
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namespace boost { namespace geometry
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{
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namespace strategy { namespace expand
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{
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#ifndef DOXYGEN_NO_DETAIL
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namespace detail
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{
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struct segment_on_spheroid
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{
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template <typename Box, typename Segment, typename Strategy>
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static inline void apply(Box& box, Segment const& segment, Strategy const& strategy)
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{
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Box mbrs[2];
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// compute the envelope of the segment
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geometry::detail::envelope::envelope_segment::apply(segment, mbrs[0], strategy);
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// normalize the box
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strategy::envelope::spherical_box::apply(box, mbrs[1]);
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// compute the envelope of the two boxes
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geometry::detail::envelope::envelope_range_of_boxes::apply(mbrs, box);
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}
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};
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} // namespace detail
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#endif // DOXYGEN_NO_DETAIL
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template
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<
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typename CalculationType = void
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>
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class spherical_segment
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{
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public:
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template <typename Box, typename Segment>
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static inline void apply(Box& box, Segment const& segment)
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{
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detail::segment_on_spheroid::apply(box, segment,
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strategy::envelope::spherical_segment<CalculationType>());
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}
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};
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#ifndef DOXYGEN_NO_STRATEGY_SPECIALIZATIONS
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namespace services
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{
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template <typename CalculationType>
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struct default_strategy<segment_tag, spherical_equatorial_tag, CalculationType>
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{
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typedef spherical_segment<CalculationType> type;
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};
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template <typename CalculationType>
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struct default_strategy<segment_tag, spherical_polar_tag, CalculationType>
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{
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typedef spherical_segment<CalculationType> type;
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};
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} // namespace services
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#endif // DOXYGEN_NO_STRATEGY_SPECIALIZATIONS
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}} // namespace strategy::expand
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}} // namespace boost::geometry
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#endif // BOOST_GEOMETRY_STRATEGY_SPHERICAL_EXPAND_SEGMENT_HPP
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