GEOS: EdgeRing.h Source File

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operation/polygonize/EdgeRing.h
1 /**********************************************************************
2 * $Id: EdgeRing.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) 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 * Last port: operation/polygonize/EdgeRing.java rev. 109/138 (JTS-1.10)
18 *
19 **********************************************************************/
20
21
22 #ifndef GEOS_OP_POLYGONIZE_EDGERING_H
23 #define GEOS_OP_POLYGONIZE_EDGERING_H
24
25 #include <geos/export.h>
26
27 #include <vector>
28
29 #ifdef _MSC_VER
30 #pragma warning(push)
31 #pragma warning(disable: 4251) // warning C4251: needs to have dll-interface to be used by clients of class
32 #endif
33
34 // Forward declarations
35 namespace geos {
36 namespace geom {
37 class LineString;
38 class LinearRing;
39 class Polygon;
40 class CoordinateSequence;
41 class Geometry;
42 class GeometryFactory;
43 class Coordinate;
44 }
45 namespace planargraph {
46 class DirectedEdge;
47 }
48 }
49
50 namespace geos {
51 namespace operation { // geos::operation
52 namespace polygonize { // geos::operation::polygonize
53
58 class GEOS_DLL EdgeRing {
59 private:
60 const geom::GeometryFactory *factory;
61
62 typedef std::vector<const planargraph::DirectedEdge*> DeList;
63 DeList deList;
64
65 // cache the following data for efficiency
66 geom::LinearRing *ring;
67 geom::CoordinateSequence *ringPts;
68
69 typedef std::vector<geom::Geometry*> GeomVect;
70 GeomVect *holes;
71
78 geom::CoordinateSequence* getCoordinates();
79
80 static void addEdge(const geom::CoordinateSequence *coords,
81 bool isForward,
82 geom::CoordinateSequence *coordList);
83
84 public:
103 static EdgeRing* findEdgeRingContaining(
104 EdgeRing *testEr,
105 std::vector<EdgeRing*> *shellList);
106
117 static const geom::Coordinate& ptNotInList(
118 const geom::CoordinateSequence *testPts,
119 const geom::CoordinateSequence *pts);
120
129 static bool isInList(const geom::Coordinate &pt,
130 const geom::CoordinateSequence *pts);
131
132 EdgeRing(const geom::GeometryFactory *newFactory);
133
134 ~EdgeRing();
135
141 void add(const planargraph::DirectedEdge *de);
142
150 bool isHole();
151
157 void addHole(geom::LinearRing *hole);
158
167 geom::Polygon* getPolygon();
168
173 bool isValid();
174
183 geom::LineString* getLineString();
184
192 geom::LinearRing* getRingInternal();
193
201 geom::LinearRing* getRingOwnership();
202 };
203
204 } // namespace geos::operation::polygonize
205 } // namespace geos::operation
206 } // namespace geos
207
208 #ifdef _MSC_VER
209 #pragma warning(pop)
210 #endif
211
212 #endif // GEOS_OP_POLYGONIZE_EDGERING_H
213
214 /**********************************************************************
215 * $Log$
216 * Revision 1.2 2006/05/02 14:32:49 strk
217 * Added port info for polygonize/EdgeRing class, polygonize/EdgeRing.h header
218 * not installed.
219 *
220 * Revision 1.1 2006/03/22 11:19:06 strk
221 * opPolygonize.h headers split.
222 *
223 **********************************************************************/