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# Node.h

    00001 /**********************************************************************
    00002  * $Id: Node.h 2557 2009-06-08 09:30:55Z strk $
    00003  *
    00004  * GEOS - Geometry Engine Open Source
    00005  * http://geos.refractions.net
    00006  *
    00007  * Copyright (C) 2005-2006 Refractions Research Inc.
    00008  * Copyright (C) 2001-2002 Vivid Solutions 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  * Last port: geomgraph/Node.java rev. 1.7 (JTS-1.10)
    00018  *
    00019  **********************************************************************/
    00020
    00021
    00022 #ifndef GEOS_GEOMGRAPH_NODE_H
    00023 #define GEOS_GEOMGRAPH_NODE_H
    00024
    00025 #include <geos/export.h>
    00026 #include <geos/geomgraph/GraphComponent.h> // for inheritance
    00027 #include <geos/geom/Coordinate.h> // for member
    00028
    00029 #ifndef NDEBUG
    00030 #include <geos/geomgraph/EdgeEndStar.h> // for testInvariant
    00031 #include <geos/geomgraph/EdgeEnd.h> // for testInvariant
    00032 #endif // ndef NDEBUG
    00033
    00034 #include <geos/inline.h>
    00035
    00036 #include <cassert>
    00037 #include <string>
    00038
    00039 // Forward declarations
    00040 namespace geos {
    00041         namespace geom {
    00042                 class IntersectionMatrix;
    00043         }
    00044         namespace geomgraph {
    00045                 class Node;
    00046                 class EdgeEndStar;
    00047                 class EdgeEnd;
    00048                 class Label;
    00049                 class NodeFactory;
    00050         }
    00051 }
    00052
    00053 namespace geos {
    00054 namespace geomgraph { // geos.geomgraph
    00055
    00056 class GEOS_DLL Node: public GraphComponent {
    00057 using GraphComponent::setLabel;
    00058
    00059 public:
    00060
    00061         friend std::ostream& operator<< (std::ostream& os, const Node& node);
    00062
    00063         Node(const geom::Coordinate& newCoord, EdgeEndStar* newEdges);
    00064
    00065         virtual ~Node();
    00066
    00067         virtual const geom::Coordinate& getCoordinate() const;
    00068
    00069         virtual EdgeEndStar* getEdges();
    00070
    00071         virtual bool isIsolated() const;
    00072
    00076         virtual void add(EdgeEnd *e);
    00077
    00078         virtual void mergeLabel(const Node& n);
    00079
    00087         virtual void mergeLabel(const Label& label2);
    00088
    00089         virtual void setLabel(int argIndex, int onLocation);
    00090
    00095         virtual void setLabelBoundary(int argIndex);
    00096
    00105         virtual int computeMergedLocation(const Label* label2, int eltIndex);
    00106
    00107         virtual std::string print();
    00108
    00109         virtual const std::vector<double> &getZ() const;
    00110
    00111         virtual void addZ(double);
    00112
    00124         virtual bool isIncidentEdgeInResult() const;
    00125
    00126 protected:
    00127
    00128         void testInvariant() const;
    00129
    00130         geom::Coordinate coord;
    00131
    00132         EdgeEndStar* edges;
    00133
    00137         virtual void computeIM(geom::IntersectionMatrix* /*im*/) {};
    00138
    00139 private:
    00140
    00141         std::vector<double> zvals;
    00142
    00143         double ztot;
    00144
    00145 };
    00146
    00147 std::ostream& operator<< (std::ostream& os, const Node& node);
    00148
    00149 inline void
    00150 Node::testInvariant() const
    00151 {
    00152 #ifndef NDEBUG
    00153         if (edges)
    00154         {
    00155                 // Each EdgeEnd in the star has this Node's
    00156                 // coordinate as first coordinate
    00157                 for (EdgeEndStar::iterator
    00158                                 it=edges->begin(), itEnd=edges->end();
    00159                                 it != itEnd; it++)
    00160                 {
    00161                         EdgeEnd* e=*it;
    00162                         assert(e);
    00163                         assert(e->getCoordinate().equals2D(coord));
    00164                 }
    00165         }
    00166
    00167 #if 0 // We can't rely on numerical stability with FP computations
    00168         // ztot is the sum of doubnle sin zvals vector
    00169         double ztot_check=0.0;
    00170         for (std::vector<double>::const_iterator
    00171                         i = zvals.begin(), e = zvals.end();
    00172                         i != e;
    00173                         i++)
    00174         {
    00175                 ztot_check += *i;
    00176         }
    00177         assert(ztot_check == ztot);
    00178 #endif // 0
    00179
    00180 #endif
    00181 }
    00182
    00183
    00184 } // namespace geos.geomgraph
    00185 } // namespace geos
    00186
    00187 //#ifdef GEOS_INLINE
    00188 //# include "geos/geomgraph/Node.inl"
    00189 //#endif
    00190
    00191 #endif // ifndef GEOS_GEOMGRAPH_NODE_H
    00192
    00193 /**********************************************************************
    00194  * $Log$
    00195  * Revision 1.6  2006/06/01 11:49:36  strk
    00196  * Reduced installed headers form geomgraph namespace
    00197  *
    00198  * Revision 1.5  2006/04/27 15:15:06  strk
    00199  * Z check removed from invariant tester to avoid aborts due to differences in FP computations.
    00200  *
    00201  * Revision 1.4  2006/04/07 16:01:51  strk
    00202  * Port info, doxygen comments, testInvariant(), many assertionss, handling of
    00203  * the NULL EdgeEndStar member
    00204  *
    00205  * Revision 1.3  2006/03/24 09:52:41  strk
    00206  * USE_INLINE => GEOS_INLINE
    00207  *
    00208  * Revision 1.2  2006/03/15 16:27:54  strk
    00209  * operator<< for Node class
    00210  *
    00211  * Revision 1.1  2006/03/09 16:46:49  strk
    00212  * geos::geom namespace definition, first pass at headers split
    00213  *
    00214  **********************************************************************/
    00215