/src/geos/include/geos/dissolve/DissolveHalfEdge.h
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1 | | /********************************************************************** |
2 | | * |
3 | | * GEOS - Geometry Engine Open Source |
4 | | * http://geos.osgeo.org |
5 | | * |
6 | | * Copyright (c) 2025 Martin Davis |
7 | | * Copyright (C) 2025 Paul Ramsey <pramsey@cleverelephant.ca> |
8 | | * |
9 | | * This is free software; you can redistribute and/or modify it under |
10 | | * the terms of the GNU Lesser General Public Licence as published |
11 | | * by the Free Software Foundation. |
12 | | * See the COPYING file for more information. |
13 | | * |
14 | | **********************************************************************/ |
15 | | |
16 | | #pragma once |
17 | | |
18 | | #include <geos/edgegraph/MarkHalfEdge.h> |
19 | | #include <geos/export.h> |
20 | | |
21 | | |
22 | | |
23 | | // Forward declarations |
24 | | namespace geos { |
25 | | namespace geom { |
26 | | class CoordinateXYZM; |
27 | | } |
28 | | namespace edgegraph { |
29 | | } |
30 | | } |
31 | | |
32 | | |
33 | | namespace geos { // geos. |
34 | | namespace dissolve { // geos.dissolve |
35 | | |
36 | | |
37 | | class GEOS_DLL DissolveHalfEdge : public edgegraph::MarkHalfEdge { |
38 | | |
39 | | |
40 | | private: |
41 | | |
42 | | bool m_isStart = false; |
43 | | |
44 | | |
45 | | public: |
46 | | |
47 | | DissolveHalfEdge(const geom::CoordinateXYZM& orig) |
48 | 0 | : edgegraph::MarkHalfEdge(orig) |
49 | 0 | , m_isStart(false) |
50 | 0 | {} |
51 | | |
52 | | /** |
53 | | * Tests whether this edge is the starting segment |
54 | | * in a LineString being dissolved. |
55 | | * |
56 | | * @return true if this edge is a start segment |
57 | | */ |
58 | | bool isStart(); |
59 | | |
60 | | /** |
61 | | * Sets this edge to be the start segment of an input LineString. |
62 | | */ |
63 | | void setStart(); |
64 | | |
65 | | }; |
66 | | |
67 | | } // namespace geos.dissolve |
68 | | } // namespace geos |
69 | | |