GEOS: PolygonizeDirectedEdge.h Source File

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PolygonizeDirectedEdge.h
1 /**********************************************************************
2 * $Id: PolygonizeDirectedEdge.h 2567 2009-06-08 16:58:42Z strk $
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/PolygonizeDirectedEdge.java rev. 1.4 (JTS-1.10)
18 *
19 **********************************************************************/
20
21
22 #ifndef GEOS_OP_POLYGONIZE_POLYGONIZEDIRECTEDEDGE_H
23 #define GEOS_OP_POLYGONIZE_POLYGONIZEDIRECTEDEDGE_H
24
25 #include <geos/export.h>
26
27 #include <geos/planargraph/DirectedEdge.h> // for inheritance
28
29 // Forward declarations
30 namespace geos {
31 namespace geom {
32 //class LineString;
33 }
34 namespace planargraph {
35 class Node;
36 }
37 namespace operation {
38 namespace polygonize {
39 class EdgeRing;
40 }
41 }
42 }
43
44 namespace geos {
45 namespace operation { // geos::operation
46 namespace polygonize { // geos::operation::polygonize
47
55 class GEOS_DLL PolygonizeDirectedEdge: public planargraph::DirectedEdge {
56
57 private:
58
59 EdgeRing *edgeRing;
60
61 PolygonizeDirectedEdge *next;
62
63 long label;
64
65 public:
66
67 /*
68 * \brief
69 * Constructs a directed edge connecting the <code>from</code> node
70 * to the <code>to</code> node.
71 *
72 * @param directionPt
73 * specifies this DirectedEdge's direction (given by an imaginary
74 * line from the <code>from</code> node to <code>directionPt</code>)
75 *
76 * @param edgeDirection
77 * whether this DirectedEdge's direction is the same as or
78 * opposite to that of the parent Edge (if any)
79 */
80 PolygonizeDirectedEdge(planargraph::Node *newFrom,
81 planargraph::Node *newTo,
82 const geom::Coordinate& newDirectionPt,
83 bool nEdgeDirection);
84
85 /*
86 * Returns the identifier attached to this directed edge.
87 */
88 long getLabel() const;
89
90 /*
91 * Attaches an identifier to this directed edge.
92 */
93 void setLabel(long newLabel);
94
95 /*
96 * Returns the next directed edge in the EdgeRing that this
97 * directed edge is a member of.
98 */
99 PolygonizeDirectedEdge* getNext() const;
100
101 /*
102 * Sets the next directed edge in the EdgeRing that this
103 * directed edge is a member of.
104 */
105 void setNext(PolygonizeDirectedEdge *newNext);
106
107 /*
108 * Returns the ring of directed edges that this directed edge is
109 * a member of, or null if the ring has not been set.
110 * @see #setRing(EdgeRing)
111 */
112 bool isInRing() const;
113
114 /*
115 * Sets the ring of directed edges that this directed edge is
116 * a member of.
117 */
118 void setRing(EdgeRing *newEdgeRing);
119 };
120 } // namespace geos::operation::polygonize
121 } // namespace geos::operation
122 } // namespace geos
123
124 #endif // GEOS_OP_POLYGONIZE_POLYGONIZEDIRECTEDEDGE_H
125
126 /**********************************************************************
127 * $Log$
128 * Revision 1.1 2006/03/22 11:19:06 strk
129 * opPolygonize.h headers split.
130 *
131 **********************************************************************/