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 ```1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 ``` ``````// Boost.Geometry (aka GGL, Generic Geometry Library) // Copyright (c) 2014-2017, Oracle and/or its affiliates. // Contributed and/or modified by Menelaos Karavelas, on behalf of Oracle // Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle // Licensed under the Boost Software License version 1.0. // http://www.boost.org/users/license.html #ifndef BOOST_GEOMETRY_ALGORITHMS_DETAIL_IS_SIMPLE_ALWAYS_SIMPLE_HPP #define BOOST_GEOMETRY_ALGORITHMS_DETAIL_IS_SIMPLE_ALWAYS_SIMPLE_HPP #include #include namespace boost { namespace geometry { #ifndef DOXYGEN_NO_DETAIL namespace detail { namespace is_simple { template struct always_simple { template static inline bool apply(Geometry const&, Strategy const&) { return true; } }; }} // namespace detail::is_simple #endif // DOXYGEN_NO_DETAIL #ifndef DOXYGEN_NO_DISPATCH namespace dispatch { // A point is always simple template struct is_simple : detail::is_simple::always_simple {}; // A valid segment is always simple. // A segment is a curve. // A curve is simple if it does not pass through the same point twice, // with the possible exception of its two endpoints // // Reference: OGC 06-103r4 (6.1.6.1) template struct is_simple : detail::is_simple::always_simple {}; // A valid box is always simple // A box is a Polygon, and it satisfies the conditions for Polygon validity. // // Reference (for polygon validity): OGC 06-103r4 (6.1.11.1) template struct is_simple : detail::is_simple::always_simple {}; } // namespace dispatch #endif // DOXYGEN_NO_DISPATCH }} // namespace boost::geometry #endif // BOOST_GEOMETRY_ALGORITHMS_DETAIL_IS_SIMPLE_ALWAYS_SIMPLE_HPP ``````