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SubgraphDepthLocater.h
1 /**********************************************************************
2 *
3 * GEOS - Geometry Engine Open Source
4 * http://geos.osgeo.org
5 *
6 * Copyright (C) 2006 Refractions Research Inc.
7 *
8 * This is free software; you can redistribute and/or modify it under
9 * the terms of the GNU Lesser General Public Licence as published
10 * by the Free Software Foundation.
11 * See the COPYING file for more information.
12 *
13 **********************************************************************
14 *
15 * Last port: operation/buffer/SubgraphDepthLocater.java r320 (JTS-1.12)
16 *
17 **********************************************************************/
18
19 #ifndef GEOS_OP_BUFFER_SUBGRAPHDEPTHLOCATER_H
20 #define GEOS_OP_BUFFER_SUBGRAPHDEPTHLOCATER_H
21
22 #include <geos/export.h>
23
24 #include <vector>
25
26 #include <geos/geom/LineSegment.h> // for composition
27
28 // Forward declarations
29 namespace geos {
30 namespace geom {
31 class Coordinate;
32 }
33 namespace geomgraph {
34 class DirectedEdge;
35 }
36 namespace operation {
37 namespace buffer {
38 class BufferSubgraph;
39 class DepthSegment;
40 }
41 }
42 }
43
44 namespace geos {
45 namespace operation { // geos.operation
46 namespace buffer { // geos.operation.buffer
47
59 class GEOS_DLL SubgraphDepthLocater {
60
61 public:
62
63 SubgraphDepthLocater(std::vector<BufferSubgraph*> *newSubgraphs)
64 :
65 subgraphs(newSubgraphs)
66 {}
67
68 ~SubgraphDepthLocater() {}
69
70 int getDepth(const geom::Coordinate &p);
71
72 private:
73
74 std::vector<BufferSubgraph*> *subgraphs;
75
76 geom::LineSegment seg;
77
86 void findStabbedSegments(const geom::Coordinate &stabbingRayLeftPt,
87 std::vector<DepthSegment*>& stabbedSegments);
88
98 void findStabbedSegments(const geom::Coordinate &stabbingRayLeftPt,
99 std::vector<geomgraph::DirectedEdge*> *dirEdges,
100 std::vector<DepthSegment*>& stabbedSegments);
101
111 void findStabbedSegments(const geom::Coordinate &stabbingRayLeftPt,
112 geomgraph::DirectedEdge *dirEdge,
113 std::vector<DepthSegment*>& stabbedSegments);
114
115 };
116
117
118 } // namespace geos::operation::buffer
119 } // namespace geos::operation
120 } // namespace geos
121
122 #endif // ndef GEOS_OP_BUFFER_SUBGRAPHDEPTHLOCATER_H
123