GEOS  3.6.1
geomgraph/GraphComponent.h
1 /**********************************************************************
2  *
3  * GEOS - Geometry Engine Open Source
4  * http://geos.osgeo.org
5  *
6  * Copyright (C) 2011 Sandro Santilli <strk@keybit.net>
7  * Copyright (C) 2005-2006 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: geomgraph/GraphComponent.java r428 (JTS-1.12+)
18  *
19  **********************************************************************/
20 
21 
22 #ifndef GEOS_GEOMGRAPH_GRAPHCOMPONENT_H
23 #define GEOS_GEOMGRAPH_GRAPHCOMPONENT_H
24 
25 #include <geos/export.h>
26 #include <geos/inline.h>
27 
28 #include <geos/geomgraph/Label.h>
29 
30 // Forward declarations
31 namespace geos {
32  namespace geom {
33  class IntersectionMatrix;
34  }
35 }
36 
37 namespace geos {
38 namespace geomgraph { // geos.geomgraph
39 
40 
47 class GEOS_DLL GraphComponent {
48 public:
50 
51  /*
52  * GraphComponent copies the given Label.
53  */
54  GraphComponent(const Label& newLabel);
55  virtual ~GraphComponent();
56 
57  Label& getLabel() { return label; }
58  const Label& getLabel() const { return label; }
59  void setLabel(const Label& newLabel) { label = newLabel; }
60 
61  virtual void setInResult(bool isInResult) { isInResultVar=isInResult; }
62  virtual bool isInResult() const { return isInResultVar; }
63  virtual void setCovered(bool isCovered);
64  virtual bool isCovered() const { return isCoveredVar; }
65  virtual bool isCoveredSet() const { return isCoveredSetVar; }
66  virtual bool isVisited() const { return isVisitedVar; }
67  virtual void setVisited(bool isVisited) { isVisitedVar = isVisited; }
68  virtual bool isIsolated() const=0;
69  virtual void updateIM(geom::IntersectionMatrix& im);
70 protected:
71  Label label;
72  virtual void computeIM(geom::IntersectionMatrix& im)=0;
73 private:
74  bool isInResultVar;
75  bool isCoveredVar;
76  bool isCoveredSetVar;
77  bool isVisitedVar;
78 };
79 
80 } // namespace geos.geomgraph
81 } // namespace geos
82 
83 #endif // ifndef GEOS_GEOMGRAPH_GRAPHCOMPONENT_H
Implementation of Dimensionally Extended Nine-Intersection Model (DE-9IM) matrix. ...
Definition: IntersectionMatrix.h:51
A Label indicates the topological relationship of a component of a topology graph to a given Geometry...
Definition: Label.h:57
Basic namespace for all GEOS functionalities.
Definition: IndexedNestedRingTester.h:25
A GraphComponent is the parent class for the objects&#39; that form a graph.
Definition: geomgraph/GraphComponent.h:47