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# DirectedEdge.h

    00001 /**********************************************************************
    00002  * $Id: DirectedEdge.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_DIRECTEDEDGE_H
    00018 #define GEOS_PLANARGRAPH_DIRECTEDEDGE_H
    00019
    00020 #include <geos/export.h>
    00021 #include <geos/planargraph/GraphComponent.h> // for inheritance
    00022 #include <geos/geom/Coordinate.h> // for composition
    00023
    00024 #include <vector> // for typedefs
    00025 #include <list> // for typedefs
    00026
    00027 // Forward declarations
    00028 namespace geos {
    00029         namespace planargraph {
    00030                 class Edge;
    00031                 class Node;
    00032         }
    00033 }
    00034
    00035 namespace geos {
    00036 namespace planargraph { // geos.planargraph
    00037
    00047 class GEOS_DLL DirectedEdge: public GraphComponent {
    00048
    00049 public:
    00050
    00051         typedef std::list<DirectedEdge *> NonConstList;
    00052         typedef std::list<const DirectedEdge *> ConstList;
    00053         typedef std::vector<DirectedEdge *> NonConstVect;
    00054
    00055 protected:
    00056         Edge* parentEdge;
    00057         Node* from;
    00058         Node* to;
    00059         geom::Coordinate p0, p1;
    00060         DirectedEdge* sym;  // optional
    00061         bool edgeDirection;
    00062         int quadrant;
    00063         double angle;
    00064 public:
    00065
    00066         typedef std::vector<const DirectedEdge *> ConstVect;
    00067         typedef std::vector<DirectedEdge *> Vect;
    00068
    00078         static std::vector<Edge*>* toEdges(
    00079                 std::vector<DirectedEdge*>& dirEdges);
    00080
    00089         static void toEdges( std::vector<DirectedEdge*>& dirEdges,
    00090                         std::vector<Edge*>& parentEdges);
    00091
    00104         DirectedEdge(Node *newFrom, Node *newTo,
    00105                         const geom::Coordinate &directionPt,
    00106                         bool newEdgeDirection);
    00107
    00112         Edge* getEdge() const;
    00113
    00118         void setEdge(Edge* newParentEdge);
    00119
    00124         int getQuadrant() const;
    00125
    00130         const geom::Coordinate& getDirectionPt() const;
    00131
    00136         bool getEdgeDirection() const;
    00137
    00141         Node* getFromNode() const;
    00142
    00146         Node* getToNode() const;
    00147
    00152         geom::Coordinate& getCoordinate() const;
    00153
    00159         double getAngle() const;
    00160
    00166         DirectedEdge* getSym() const;
    00167
    00173         void setSym(DirectedEdge *newSym);
    00174
    00194         int compareTo(const DirectedEdge* obj) const;
    00195
    00215         int compareDirection(const DirectedEdge *e) const;
    00216
    00222         std::string print() const;
    00223
    00224 };
    00225
    00227 bool pdeLessThan(DirectedEdge *first, DirectedEdge * second);
    00228
    00229
    00230
    00231 } // namespace geos::planargraph
    00232 } // namespace geos
    00233
    00234 #endif // GEOS_PLANARGRAPH_DIRECTEDEDGE_H
    00235
    00236 /**********************************************************************
    00237  * $Log$
    00238  * Revision 1.2  2006/06/12 15:46:08  strk
    00239  * provided a memory friendly version of toEdges() method.
    00240  *
    00241  * Revision 1.1  2006/03/21 21:42:54  strk
    00242  * planargraph.h header split, planargraph:: classes renamed to match JTS symbols
    00243  *
    00244  **********************************************************************/
    00245