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Node.h

00001 /**********************************************************************
00002  * $Id: Node.h 2556 2009-06-06 22:22:28Z strk $
00003  *
00004  * GEOS - Geometry Engine Open Source
00005  * http://geos.refractions.net
00006  *
00007  * Copyright (C) 2001-2002 Vivid Solutions Inc.
00008  * Copyright (C) 2005-2006 Refractions Research Inc.
00009  *
00010  * This is free software; you can redistribute and/or modify it under
00011  * the terms of the GNU Lesser General Public Licence as published
00012  * by the Free Software Foundation. 
00013  * See the COPYING file for more information.
00014  *
00015  **********************************************************************/
00016 
00017 #ifndef GEOS_PLANARGRAPH_NODE_H
00018 #define GEOS_PLANARGRAPH_NODE_H
00019 
00020 #include <geos/export.h>
00021 
00022 #include <geos/planargraph/GraphComponent.h> // for inheritance
00023 #include <geos/planargraph/DirectedEdgeStar.h> // for inlines
00024 #include <geos/geom/Coordinate.h> // for composition
00025 
00026 // Forward declarations
00027 namespace geos {
00028         namespace planargraph { 
00029                 //class DirectedEdgeStar;
00030                 class DirectedEdge;
00031         }
00032 }
00033 
00034 namespace geos {
00035 namespace planargraph { // geos.planargraph
00036 
00046 class GEOS_DLL Node: public GraphComponent {
00047 protected:
00048 
00050         geom::Coordinate pt;
00051 
00053         DirectedEdgeStar *deStar;
00054 
00055 public:
00056 
00057         friend std::ostream& operator << (std::ostream& os, const Node&);
00058 
00066         static std::vector<Edge*>* getEdgesBetween(Node *node0,
00067                         Node *node1);
00068 
00070         Node(const geom::Coordinate& newPt)
00071                 :
00072                 pt(newPt)
00073                 { deStar=new DirectedEdgeStar(); }
00074 
00075         virtual ~Node() {
00076                 delete deStar;
00077         }
00078 
00085         Node(geom::Coordinate& newPt, DirectedEdgeStar *newDeStar)
00086                 :
00087                 pt(newPt),
00088                 deStar(newDeStar)
00089                 {}
00090 
00094         geom::Coordinate& getCoordinate() {
00095                 return pt;
00096         }
00097 
00101         void addOutEdge(DirectedEdge *de) {
00102                 deStar->add(de);
00103         }
00104 
00109         DirectedEdgeStar* getOutEdges() { return deStar; }
00110         const DirectedEdgeStar* getOutEdges() const { return deStar; }
00111 
00115         size_t getDegree() const {
00116                 return deStar->getDegree();
00117         }
00118 
00124         int getIndex(Edge *edge) {
00125                 return deStar->getIndex(edge);
00126         }
00127 
00128 };
00129 
00131 std::ostream& operator<<(std::ostream& os, const Node& n); 
00132 
00133 
00135 //typedef Node planarNode;
00136 
00137 } // namespace geos::planargraph
00138 } // namespace geos
00139 
00140 #endif // GEOS_PLANARGRAPH_NODE_H
00141 
00142 /**********************************************************************
00143  * $Log$
00144  * Revision 1.3  2006/06/12 16:57:26  strk
00145  * Added note about ownership of return from getEdgesBetween()
00146  *
00147  * Revision 1.2  2006/06/12 10:49:43  strk
00148  * unsigned int => size_t
00149  *
00150  * Revision 1.1  2006/03/21 21:42:54  strk
00151  * planargraph.h header split, planargraph:: classes renamed to match JTS symbols
00152  *
00153  **********************************************************************/
00154 

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