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1 | // Boost.Geometry (aka GGL, Generic Geometry Library) |
2 | ||
3 | // Copyright (c) 2007-2012 Barend Gehrels, Amsterdam, the Netherlands. | |
4 | // Copyright (c) 2013 Adam Wulkiewicz, Lodz, Poland | |
5 | ||
6 | // Use, modification and distribution is subject to the Boost Software License, | |
7 | // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at | |
8 | // http://www.boost.org/LICENSE_1_0.txt) | |
9 | ||
10 | #ifndef BOOST_GEOMETRY_ALGORITHMS_DETAIL_OVERLAY_DO_REVERSE_HPP | |
11 | #define BOOST_GEOMETRY_ALGORITHMS_DETAIL_OVERLAY_DO_REVERSE_HPP | |
12 | ||
13 | #include <boost/geometry/core/point_order.hpp> | |
14 | ||
15 | namespace boost { namespace geometry | |
16 | { | |
17 | ||
18 | ||
19 | #ifndef DOXYGEN_NO_DETAIL | |
20 | namespace detail { namespace overlay | |
21 | { | |
22 | ||
23 | // Metafunction helper for intersection and union | |
24 | template <order_selector Selector, bool Reverse = false> | |
25 | struct do_reverse {}; | |
26 | ||
27 | template <> | |
28 | struct do_reverse<clockwise, false> : boost::false_type {}; | |
29 | ||
30 | template <> | |
31 | struct do_reverse<clockwise, true> : boost::true_type {}; | |
32 | ||
33 | template <> | |
34 | struct do_reverse<counterclockwise, false> : boost::true_type {}; | |
35 | ||
36 | template <> | |
37 | struct do_reverse<counterclockwise, true> : boost::false_type {}; | |
38 | ||
39 | ||
40 | }} // namespace detail::overlay | |
41 | #endif // DOXYGEN_NO_DETAIL | |
42 | ||
43 | ||
44 | }} // namespace boost::geometry | |
45 | ||
46 | ||
47 | #endif // BOOST_GEOMETRY_ALGORITHMS_DETAIL_OVERLAY_DO_REVERSE_HPP |