GEOS 3.14.0dev
planargraph/Edge.h
1/**********************************************************************
2 *
3 * GEOS - Geometry Engine Open Source
4 * http://geos.osgeo.org
5 *
6 * Copyright (C) 2001-2002 Vivid Solutions Inc.
7 * Copyright (C) 2005-2006 Refractions Research 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#pragma once
17
18#include <geos/export.h>
19
20#include <geos/planargraph/GraphComponent.h> // for inheritance
21
22#include <vector> // for typedefs
23#include <set> // for typedefs
24#include <iosfwd> // ostream
25#include <cstdint>
26
27#ifdef _MSC_VER
28#pragma warning(push)
29#pragma warning(disable: 4251) // warning C4251: needs to have dll-interface to be used by clients of class
30#endif
31
32// Forward declarations
33namespace geos {
34namespace planargraph {
35class DirectedEdgeStar;
36class DirectedEdge;
37class Edge;
38class Node;
39}
40}
41
42namespace geos {
43namespace planargraph { // geos.planargraph
44
54class GEOS_DLL Edge: public GraphComponent {
55
56public:
57
58 friend std::ostream& operator<< (std::ostream& os, const Node&);
59
61 typedef std::set<const Edge*> ConstSet;
62
64 typedef std::set<Edge*> NonConstSet;
65
67 typedef std::vector<Edge*> NonConstVect;
68
70 typedef std::vector<const Edge*> ConstVect;
71
72protected:
73
75 std::vector<DirectedEdge*> dirEdge;
76
77public:
78
85 Edge(): dirEdge() {}
86
94 :
95 dirEdge()
96 {
97 setDirectedEdges(de0, de1);
98 }
99
108
114
121
127};
128
130std::ostream& operator<<(std::ostream& os, const Edge& n);
131
133//typedef Edge planarEdge;
134
135} // namespace geos::planargraph
136} // namespace geos
137
138#ifdef _MSC_VER
139#pragma warning(pop)
140#endif
141
Represents a directed edge in a PlanarGraph.
Definition planargraph/DirectedEdge.h:45
Represents an undirected edge of a PlanarGraph.
Definition planargraph/Edge.h:54
std::vector< const Edge * > ConstVect
Vector of const Edges pointers.
Definition planargraph/Edge.h:70
DirectedEdge * getDirEdge(Node *fromNode)
Returns the DirectedEdge that starts from the given node, or null if the node is not one of the two n...
Node * getOppositeNode(Node *node)
If node is one of the two nodes associated with this Edge, returns the other node; otherwise returns ...
Edge()
Constructs a Edge whose DirectedEdges are not yet set.
Definition planargraph/Edge.h:85
DirectedEdge * getDirEdge(int i)
Returns one of the DirectedEdges associated with this Edge.
Edge(DirectedEdge *de0, DirectedEdge *de1)
Constructs an Edge initialized with the given DirectedEdges.
Definition planargraph/Edge.h:93
std::set< const Edge * > ConstSet
Set of const Edges pointers.
Definition planargraph/Edge.h:61
std::set< Edge * > NonConstSet
Set of non-const Edges pointers.
Definition planargraph/Edge.h:64
std::vector< DirectedEdge * > dirEdge
The two DirectedEdges associated with this Edge.
Definition planargraph/Edge.h:75
void setDirectedEdges(DirectedEdge *de0, DirectedEdge *de1)
Initializes this Edge's two DirectedEdges.
std::vector< Edge * > NonConstVect
Vector of non-const Edges pointers.
Definition planargraph/Edge.h:67
The base class for all graph component classes.
Definition planargraph/GraphComponent.h:45
A node in a PlanarGraph is a location where 0 or more Edge meet.
Definition planargraph/Node.h:44
std::ostream & operator<<(std::ostream &, const DirectedEdge &)
Output operator.
Basic namespace for all GEOS functionalities.
Definition geos.h:39