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- // 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.
- // Copyright (c) 2013-2015 Adam Wulkiewicz, Lodz, Poland.
- // This file was modified by Oracle on 2013-2018.
- // Modifications copyright (c) 2013-2018, 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_STRATEGIES_SPHERICAL_DISJOINT_BOX_BOX_HPP
- #define BOOST_GEOMETRY_STRATEGIES_SPHERICAL_DISJOINT_BOX_BOX_HPP
- #include <cstddef>
- #include <boost/geometry/core/cs.hpp>
- #include <boost/geometry/strategies/cartesian/disjoint_box_box.hpp>
- #include <boost/geometry/strategies/disjoint.hpp>
- #include <boost/geometry/util/normalize_spheroidal_coordinates.hpp>
- #include <boost/geometry/util/select_most_precise.hpp>
- namespace boost { namespace geometry { namespace strategy { namespace disjoint
- {
- #ifndef DOXYGEN_NO_DETAIL
- namespace detail
- {
- struct box_box_on_spheroid
- {
- template <typename Box1, typename Box2>
- static inline bool apply(Box1 const& box1, Box2 const& box2)
- {
- typedef typename geometry::select_most_precise
- <
- typename coordinate_type<Box1>::type,
- typename coordinate_type<Box2>::type
- >::type calc_t;
- typedef typename geometry::detail::cs_angular_units<Box1>::type units_t;
- typedef math::detail::constants_on_spheroid<calc_t, units_t> constants;
- calc_t const b1_min = get<min_corner, 0>(box1);
- calc_t const b1_max = get<max_corner, 0>(box1);
- calc_t const b2_min = get<min_corner, 0>(box2);
- calc_t const b2_max = get<max_corner, 0>(box2);
- // min <= max <=> diff >= 0
- calc_t const diff1 = b1_max - b1_min;
- calc_t const diff2 = b2_max - b2_min;
- // check the intersection if neither box cover the whole globe
- if (diff1 < constants::period() && diff2 < constants::period())
- {
- // calculate positive longitude translation with b1_min as origin
- calc_t const diff_min = math::longitude_distance_unsigned<units_t>(b1_min, b2_min);
- calc_t const b2_min_transl = b1_min + diff_min; // always right of b1_min
- calc_t b2_max_transl = b2_min_transl - constants::period() + diff2;
- // if the translation is too close then use the original point
- // note that math::abs(b2_max_transl - b2_max) takes values very
- // close to k*2*constants::period() for k=0,1,2,...
- if (math::abs(b2_max_transl - b2_max) < constants::period() / 2)
- {
- b2_max_transl = b2_max;
- }
- if (b2_min_transl > b1_max // b2_min right of b1_max
- && b2_max_transl < b1_min) // b2_max left of b1_min
- {
- return true;
- }
- }
- return box_box
- <
- Box1, Box2, 1
- >::apply(box1, box2);
- }
- };
- } // namespace detail
- #endif // DOXYGEN_NO_DETAIL
- struct spherical_box_box
- {
- template <typename Box1, typename Box2>
- static inline bool apply(Box1 const& box1, Box2 const& box2)
- {
- return detail::box_box_on_spheroid::apply(box1, box2);
- }
- };
- namespace services
- {
- template <typename Box1, typename Box2, int TopDim1, int TopDim2>
- struct default_strategy<Box1, Box2, box_tag, box_tag, TopDim1, TopDim2, spherical_equatorial_tag, spherical_equatorial_tag>
- {
- typedef disjoint::spherical_box_box type;
- };
- template <typename Box1, typename Box2, int TopDim1, int TopDim2>
- struct default_strategy<Box1, Box2, box_tag, box_tag, TopDim1, TopDim2, spherical_polar_tag, spherical_polar_tag>
- {
- typedef disjoint::spherical_box_box type;
- };
- template <typename Box1, typename Box2, int TopDim1, int TopDim2>
- struct default_strategy<Box1, Box2, box_tag, box_tag, TopDim1, TopDim2, geographic_tag, geographic_tag>
- {
- typedef disjoint::spherical_box_box type;
- };
- } // namespace services
- }}}} // namespace boost::geometry::strategy::disjoint
- #endif // BOOST_GEOMETRY_STRATEGIES_SPHERICAL_DISJOINT_BOX_BOX_HPP
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