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.
 *
 **********************************************************************/
 
#pragma once
 
#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::CoordinateXY pt;

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

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

    explicit Node(const geom::CoordinateXY& newPt)
        :
        pt(newPt)
    {}
 
    ~Node() override = default;

    const geom::CoordinateXY&
    getCoordinate() const
    {
        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);
    }
 
private:
 
    Node(const Node&) = delete;
    Node& operator=(const Node&) = delete;
 
};

std::ostream& operator<<(std::ostream& os, const Node& n);
 
 
} // namespace geos::planargraph
} // namespace geos