planargraph/Node.h

/**********************************************************************
 *
 * GEOS - Geometry Engine Open Source
 * http://geos.osgeo.org
 *
 * Copyright (C) 2001-2002 Vivid Solutions Inc.
 * Copyright (C) 2005-2006 Refractions Research Inc.
 *
 * This is free software; you can redistribute and/or modify it under
 * the terms of the GNU Lesser General Public Licence as published
 * by the Free Software Foundation. 
 * See the COPYING file for more information.
 *
 **********************************************************************/
 
#ifndef GEOS_PLANARGRAPH_NODE_H
#define GEOS_PLANARGRAPH_NODE_H
 
#include <geos/export.h>
 
#include <geos/planargraph/GraphComponent.h> // for inheritance
#include <geos/planargraph/DirectedEdgeStar.h> // for inlines
#include <geos/geom/Coordinate.h> // for composition
 
// Forward declarations
namespace geos {
        namespace planargraph { 
                //class DirectedEdgeStar;
                class DirectedEdge;
        }
}
 
namespace geos {
namespace planargraph { // geos.planargraph

class GEOS_DLL Node: public GraphComponent {
protected:

        geom::Coordinate pt;

        DirectedEdgeStar *deStar;
 
public:
 
        friend std::ostream& operator << (std::ostream& os, const Node&);

        static std::vector<Edge*>* getEdgesBetween(Node *node0,
                        Node *node1);

        Node(const geom::Coordinate& newPt)
                :
                pt(newPt)
                { deStar=new DirectedEdgeStar(); }
 
        virtual ~Node() {
                delete deStar;
        }

        Node(geom::Coordinate& newPt, DirectedEdgeStar *newDeStar)
                :
                pt(newPt),
                deStar(newDeStar)
                {}

        geom::Coordinate& getCoordinate() {
                return pt;
        }

        void addOutEdge(DirectedEdge *de) {
                deStar->add(de);
        }

        DirectedEdgeStar* getOutEdges() { return deStar; }
        const DirectedEdgeStar* getOutEdges() const { return deStar; }

        size_t getDegree() const {
                return deStar->getDegree();
        }

        int getIndex(Edge *edge) {
                return deStar->getIndex(edge);
        }
 
};

std::ostream& operator<<(std::ostream& os, const Node& n); 
 

//typedef Node planarNode;
 
} // namespace geos::planargraph
} // namespace geos
 
#endif // GEOS_PLANARGRAPH_NODE_H