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SimpleMCSweepLineIntersector.h
1 /**********************************************************************
2 * $Id: SimpleMCSweepLineIntersector.h 3255 2011-03-01 17:56:10Z mloskot $
3 *
4 * GEOS - Geometry Engine Open Source
5 * http://geos.refractions.net
6 *
7 * Copyright (C) 2005-2006 Refractions Research Inc.
8 * Copyright (C) 2001-2002 Vivid Solutions Inc.
9 *
10 * This is free software; you can redistribute and/or modify it under
11 * the terms of the GNU Lesser General Public Licence as published
12 * by the Free Software Foundation.
13 * See the COPYING file for more information.
14 *
15 **********************************************************************/
16
17 #ifndef GEOS_GEOMGRAPH_INDEX_SIMPLEMCSWEEPLINEINTERSECTOR_H
18 #define GEOS_GEOMGRAPH_INDEX_SIMPLEMCSWEEPLINEINTERSECTOR_H
19
20 #include <geos/export.h>
21 #include <vector>
22
23 #include <geos/geomgraph/index/EdgeSetIntersector.h> // for inheritance
24
25 #ifdef _MSC_VER
26 #pragma warning(push)
27 #pragma warning(disable: 4251) // warning C4251: needs to have dll-interface to be used by clients of class
28 #endif
29
30 // Forward declarations
31 namespace geos {
32 namespace geomgraph {
33 class Edge;
34 namespace index {
35 class SegmentIntersector;
36 class SweepLineEvent;
37 }
38 }
39 }
40
41 namespace geos {
42 namespace geomgraph { // geos::geomgraph
43 namespace index { // geos::geomgraph::index
44
54 class GEOS_DLL SimpleMCSweepLineIntersector: public EdgeSetIntersector {
55
56 public:
57
58 SimpleMCSweepLineIntersector();
59
60 virtual ~SimpleMCSweepLineIntersector();
61
62 void computeIntersections(std::vector<Edge*> *edges,
63 SegmentIntersector *si, bool testAllSegments);
64
65 void computeIntersections(std::vector<Edge*> *edges0,
66 std::vector<Edge*> *edges1,
67 SegmentIntersector *si);
68
69 protected:
70
71 std::vector<SweepLineEvent*> events;
72
73 // statistics information
74 int nOverlaps;
75
76 private:
77 void add(std::vector<Edge*> *edges);
78
79 void add(std::vector<Edge*> *edges,void* edgeSet);
80
81 void add(Edge *edge,void* edgeSet);
82
83 void prepareEvents();
84
85 void computeIntersections(SegmentIntersector *si);
86
87 void processOverlaps(int start, int end,
88 SweepLineEvent *ev0,
89 SegmentIntersector *si);
90 };
91
92 } // namespace geos.geomgraph.index
93 } // namespace geos.geomgraph
94 } // namespace geos
95
96 #ifdef _MSC_VER
97 #pragma warning(pop)
98 #endif
99
100 #endif // GEOS_GEOMGRAPH_INDEX_SIMPLEMCSWEEPLINEINTERSECTOR_H
101
102 /**********************************************************************
103 * $Log$
104 * Revision 1.1 2006/03/14 12:55:55 strk
105 * Headers split: geomgraphindex.h, nodingSnapround.h
106 *
107 **********************************************************************/
108