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operation/polygonize/EdgeRing.h
1 /**********************************************************************
2 *
3 * GEOS - Geometry Engine Open Source
4 * http://geos.osgeo.org
5 *
6 * Copyright (C) 2006 Refractions Research Inc.
7 * Copyright (C) 2001-2002 Vivid Solutions Inc.
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 * Last port: operation/polygonize/EdgeRing.java rev. 109/138 (JTS-1.10)
17 *
18 **********************************************************************/
19
20
21 #ifndef GEOS_OP_POLYGONIZE_EDGERING_H
22 #define GEOS_OP_POLYGONIZE_EDGERING_H
23
24 #include <geos/export.h>
25
26 #include <vector>
27
28 #ifdef _MSC_VER
29 #pragma warning(push)
30 #pragma warning(disable: 4251) // warning C4251: needs to have dll-interface to be used by clients of class
31 #endif
32
33 // Forward declarations
34 namespace geos {
35 namespace geom {
36 class LineString;
37 class LinearRing;
38 class Polygon;
39 class CoordinateSequence;
40 class Geometry;
41 class GeometryFactory;
42 class Coordinate;
43 }
44 namespace planargraph {
45 class DirectedEdge;
46 }
47 }
48
49 namespace geos {
50 namespace operation { // geos::operation
51 namespace polygonize { // geos::operation::polygonize
52
57 class GEOS_DLL EdgeRing {
58 private:
59 const geom::GeometryFactory *factory;
60
61 typedef std::vector<const planargraph::DirectedEdge*> DeList;
62 DeList deList;
63
64 // cache the following data for efficiency
65 geom::LinearRing *ring;
66 geom::CoordinateSequence *ringPts;
67
68 typedef std::vector<geom::Geometry*> GeomVect;
69 GeomVect *holes;
70
77 geom::CoordinateSequence* getCoordinates();
78
79 static void addEdge(const geom::CoordinateSequence *coords,
80 bool isForward,
81 geom::CoordinateSequence *coordList);
82
83 public:
102 static EdgeRing* findEdgeRingContaining(
103 EdgeRing *testEr,
104 std::vector<EdgeRing*> *shellList);
105
116 static const geom::Coordinate& ptNotInList(
117 const geom::CoordinateSequence *testPts,
118 const geom::CoordinateSequence *pts);
119
128 static bool isInList(const geom::Coordinate &pt,
129 const geom::CoordinateSequence *pts);
130
131 EdgeRing(const geom::GeometryFactory *newFactory);
132
133 ~EdgeRing();
134
140 void add(const planargraph::DirectedEdge *de);
141
149 bool isHole();
150
156 void addHole(geom::LinearRing *hole);
157
166 geom::Polygon* getPolygon();
167
172 bool isValid();
173
182 geom::LineString* getLineString();
183
191 geom::LinearRing* getRingInternal();
192
200 geom::LinearRing* getRingOwnership();
201 };
202
203 } // namespace geos::operation::polygonize
204 } // namespace geos::operation
205 } // namespace geos
206
207 #ifdef _MSC_VER
208 #pragma warning(pop)
209 #endif
210
211 #endif // GEOS_OP_POLYGONIZE_EDGERING_H