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planargraph/DirectedEdge.h
1 /**********************************************************************
2 * $Id: DirectedEdge.h 2556 2009-06-06 22:22:28Z strk $
3 *
4 * GEOS - Geometry Engine Open Source
5 * http://geos.refractions.net
6 *
7 * Copyright (C) 2001-2002 Vivid Solutions Inc.
8 * Copyright (C) 2005-2006 Refractions Research 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 #ifndef GEOS_PLANARGRAPH_DIRECTEDEDGE_H
18 #define GEOS_PLANARGRAPH_DIRECTEDEDGE_H
19
20 #include <geos/export.h>
21 #include <geos/planargraph/GraphComponent.h> // for inheritance
22 #include <geos/geom/Coordinate.h> // for composition
23
24 #include <vector> // for typedefs
25 #include <list> // for typedefs
26
27 // Forward declarations
28 namespace geos {
29 namespace planargraph {
30 class Edge;
31 class Node;
32 }
33 }
34
35 namespace geos {
36 namespace planargraph { // geos.planargraph
37
47 class GEOS_DLL DirectedEdge: public GraphComponent {
48
49 public:
50
51 typedef std::list<DirectedEdge *> NonConstList;
52 typedef std::list<const DirectedEdge *> ConstList;
53 typedef std::vector<DirectedEdge *> NonConstVect;
54
55 protected:
56 Edge* parentEdge;
57 Node* from;
58 Node* to;
59 geom::Coordinate p0, p1;
60 DirectedEdge* sym; // optional
61 bool edgeDirection;
62 int quadrant;
63 double angle;
64 public:
65
66 typedef std::vector<const DirectedEdge *> ConstVect;
67 typedef std::vector<DirectedEdge *> Vect;
68
78 static std::vector<Edge*>* toEdges(
79 std::vector<DirectedEdge*>& dirEdges);
80
89 static void toEdges( std::vector<DirectedEdge*>& dirEdges,
90 std::vector<Edge*>& parentEdges);
91
104 DirectedEdge(Node *newFrom, Node *newTo,
105 const geom::Coordinate &directionPt,
106 bool newEdgeDirection);
107
112 Edge* getEdge() const;
113
118 void setEdge(Edge* newParentEdge);
119
124 int getQuadrant() const;
125
130 const geom::Coordinate& getDirectionPt() const;
131
136 bool getEdgeDirection() const;
137
141 Node* getFromNode() const;
142
146 Node* getToNode() const;
147
152 geom::Coordinate& getCoordinate() const;
153
159 double getAngle() const;
160
166 DirectedEdge* getSym() const;
167
173 void setSym(DirectedEdge *newSym);
174
194 int compareTo(const DirectedEdge* obj) const;
195
215 int compareDirection(const DirectedEdge *e) const;
216
222 std::string print() const;
223
224 };
225
227 bool pdeLessThan(DirectedEdge *first, DirectedEdge * second);
228
229
230
231 } // namespace geos::planargraph
232 } // namespace geos
233
234 #endif // GEOS_PLANARGRAPH_DIRECTEDEDGE_H
235
236 /**********************************************************************
237 * $Log$
238 * Revision 1.2 2006/06/12 15:46:08 strk
239 * provided a memory friendly version of toEdges() method.
240 *
241 * Revision 1.1 2006/03/21 21:42:54 strk
242 * planargraph.h header split, planargraph:: classes renamed to match JTS symbols
243 *
244 **********************************************************************/
245