projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| 7c673cae FG |
1 | // Boost.Geometry (aka GGL, Generic Geometry Library) |
| 2 | ||
| 3 | // Copyright (c) 2014, Oracle and/or its affiliates. | |
| 4 | ||
| 5 | // Contributed and/or modified by Menelaos Karavelas, on behalf of Oracle | |
| 6 | ||
| 7 | // Licensed under the Boost Software License version 1.0. | |
| 8 | // http://www.boost.org/users/license.html | |
| 9 | ||
| 10 | #ifndef BOOST_GEOMETRY_ALGORITHMS_POLICIES_PREDICATE_BASED_INTERRUPT_POLICY_HPP | |
| 11 | #define BOOST_GEOMETRY_ALGORITHMS_POLICIES_PREDICATE_BASED_INTERRUPT_POLICY_HPP | |
| 12 | ||
| 13 | #include <boost/range.hpp> | |
| 14 | ||
| 15 | #include <boost/geometry/algorithms/detail/check_iterator_range.hpp> | |
| 16 | ||
| 17 | ||
| 18 | namespace boost { namespace geometry | |
| 19 | { | |
| 20 | ||
| 21 | ||
| 22 | #ifndef DOXYGEN_NO_DETAIL | |
| 23 | namespace detail { namespace overlay | |
| 24 | { | |
| 25 | ||
| 26 | ||
| 27 | template | |
| 28 | < | |
| 29 | typename IsAcceptableTurnPredicate, | |
| 30 | bool AllowEmptyTurnRange = true // by default, allow an empty turn range | |
| 31 | > | |
| 32 | struct stateless_predicate_based_interrupt_policy | |
| 33 | { | |
| 34 | static bool const enabled = true; | |
| 35 | bool has_intersections; // set to true if there is at least one | |
| 36 | // unacceptable turn | |
| 37 | ||
| 38 | inline stateless_predicate_based_interrupt_policy() | |
| 39 | : has_intersections(false) | |
| 40 | {} | |
| 41 | ||
| 42 | template <typename Range> | |
| 43 | inline bool apply(Range const& range) | |
| 44 | { | |
| 45 | // if there is at least one unacceptable turn in the range, return false | |
| 46 | has_intersections = !detail::check_iterator_range | |
| 47 | < | |
| 48 | IsAcceptableTurnPredicate, | |
| 49 | AllowEmptyTurnRange | |
| 50 | >::apply(boost::begin(range), boost::end(range)); | |
| 51 | ||
| 52 | return has_intersections; | |
| 53 | } | |
| 54 | }; | |
| 55 | ||
| 56 | ||
| 57 | ||
| 58 | ||
| 59 | template | |
| 60 | < | |
| 61 | typename IsAcceptableTurnPredicate, | |
| 62 | bool AllowEmptyTurnRange = true // by default, allow an empty turn range | |
| 63 | > | |
| 64 | struct predicate_based_interrupt_policy | |
| 65 | { | |
| 66 | static bool const enabled = true; | |
| 67 | bool has_intersections; // set to true if there is at least one | |
| 68 | // unacceptable turn | |
| 69 | IsAcceptableTurnPredicate const& m_predicate; | |
| 70 | ||
| 71 | inline | |
| 72 | predicate_based_interrupt_policy(IsAcceptableTurnPredicate const& predicate) | |
| 73 | : has_intersections(false) | |
| 74 | , m_predicate(predicate) | |
| 75 | {} | |
| 76 | ||
| 77 | template <typename Range> | |
| 78 | inline bool apply(Range const& range) | |
| 79 | { | |
| 80 | // if there is at least one unacceptable turn in the range, return false | |
| 81 | has_intersections = !detail::check_iterator_range | |
| 82 | < | |
| 83 | IsAcceptableTurnPredicate, | |
| 84 | AllowEmptyTurnRange | |
| 85 | >::apply(boost::begin(range), boost::end(range), m_predicate); | |
| 86 | ||
| 87 | return has_intersections; | |
| 88 | } | |
| 89 | }; | |
| 90 | ||
| 91 | ||
| 92 | ||
| 93 | ||
| 94 | }} // namespace detail::overlay | |
| 95 | #endif // DOXYGEN_NO_DETAIL | |
| 96 | ||
| 97 | ||
| 98 | }} // namespace boost::geometry | |
| 99 | ||
| 100 | ||
| 101 | #endif // BOOST_GEOMETRY_ALGORITHMS_POLICIES_PREDICATE_BASED_INTERRUPT_POLICY_HPP |