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1 | // Boost.Geometry (aka GGL, Generic Geometry Library) | |
2 | ||
3 | // Copyright (c) 2007-2012 Barend Gehrels, Amsterdam, the Netherlands. | |
4 | ||
5 | // Use, modification and distribution is subject to the Boost Software License, | |
6 | // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at | |
7 | // http://www.boost.org/LICENSE_1_0.txt) | |
8 | ||
9 | #ifndef BOOST_GEOMETRY_ALGORITHMS_DETAIL_OVERLAY_ENRICHMENT_INFO_HPP | |
10 | #define BOOST_GEOMETRY_ALGORITHMS_DETAIL_OVERLAY_ENRICHMENT_INFO_HPP | |
11 | ||
12 | #include <boost/geometry/algorithms/detail/signed_size_type.hpp> | |
13 | ||
14 | ||
15 | namespace boost { namespace geometry | |
16 | { | |
17 | ||
18 | ||
19 | #ifndef DOXYGEN_NO_DETAIL | |
20 | namespace detail { namespace overlay | |
21 | { | |
22 | ||
23 | ||
24 | /*! | |
25 | \brief Keeps info to enrich intersection info (per source) | |
26 | \details Class to keep information necessary for traversal phase (a phase | |
27 | of the overlay process). The information is gathered during the | |
28 | enrichment phase | |
29 | */ | |
30 | template<typename Point> | |
31 | struct enrichment_info | |
32 | { | |
33 | inline enrichment_info() | |
34 | : travels_to_vertex_index(-1) | |
35 | , travels_to_ip_index(-1) | |
36 | , next_ip_index(-1) | |
37 | , startable(true) | |
38 | , count_left(0) | |
39 | , count_right(0) | |
40 | , zone(-1) | |
41 | {} | |
42 | ||
43 | // vertex to which is free travel after this IP, | |
44 | // so from "segment_index+1" to "travels_to_vertex_index", without IP-s, | |
45 | // can be -1 | |
46 | signed_size_type travels_to_vertex_index; | |
47 | ||
48 | // same but now IP index, so "next IP index" but not on THIS segment | |
49 | signed_size_type travels_to_ip_index; | |
50 | ||
51 | // index of next IP on this segment, -1 if there is no one | |
52 | signed_size_type next_ip_index; | |
53 | ||
54 | bool startable; // Can be used to start in traverse | |
55 | ||
56 | // Counts if polygons left/right of this operation | |
57 | std::size_t count_left; | |
58 | std::size_t count_right; | |
59 | signed_size_type zone; // open zone, in cluster | |
60 | }; | |
61 | ||
62 | ||
63 | }} // namespace detail::overlay | |
64 | #endif //DOXYGEN_NO_DETAIL | |
65 | ||
66 | ||
67 | ||
68 | }} // namespace boost::geometry | |
69 | ||
70 | ||
71 | #endif // BOOST_GEOMETRY_ALGORITHMS_DETAIL_OVERLAY_ENRICHMENT_INFO_HPP |