geomgraph/DirectedEdgeStar.h

/**********************************************************************
 *
 * GEOS - Geometry Engine Open Source
 * http://geos.osgeo.org
 *
 * Copyright (C) 2011 Sandro Santilli <strk@keybit.net>
 * Copyright (C) 2005-2006 Refractions Research Inc.
 * Copyright (C) 2001-2002 Vivid Solutions 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.
 *
 **********************************************************************
 *
 * Last port: geomgraph/DirectedEdgeStar.java r428 (JTS-1.12+)
 *
 **********************************************************************/
 
 
#ifndef GEOS_GEOMGRAPH_DIRECTEDEDGEENDSTAR_H
#define GEOS_GEOMGRAPH_DIRECTEDEDGEENDSTAR_H
 
#include <geos/export.h>
#include <set>
#include <string>
#include <vector>
 
#include <geos/geomgraph/EdgeEndStar.h>  // for inheritance
#include <geos/geomgraph/Label.h>  // for private member
#include <geos/geom/Coordinate.h>  // for p0,p1
 
#include <geos/inline.h>
 
// Forward declarations
namespace geos {
        namespace geomgraph {
                class DirectedEdge;
                class EdgeRing;
        }
}
 
namespace geos {
namespace geomgraph { // geos.geomgraph

class GEOS_DLL DirectedEdgeStar: public EdgeEndStar {
 
public:
 
        DirectedEdgeStar()
                :
                EdgeEndStar(),
                resultAreaEdgeList(0),
                label()
        {}
 
        ~DirectedEdgeStar() {
                delete resultAreaEdgeList;
        }

        void insert(EdgeEnd *ee);
 
        Label &getLabel() { return label; }
 
        int getOutgoingDegree();
 
        int getOutgoingDegree(EdgeRing *er);
 
        DirectedEdge* getRightmostEdge();

        void computeLabelling(std::vector<GeometryGraph*> *geom); // throw(TopologyException *);

        void mergeSymLabels();

        void updateLabelling(const Label& nodeLabel);
 

        void linkResultDirectedEdges(); // throw(TopologyException *);
 
        void linkMinimalDirectedEdges(EdgeRing *er);
 
        void linkAllDirectedEdges();

        void findCoveredLineEdges();

        void computeDepths(DirectedEdge *de);
 
        virtual std::string print() const;
 
private:

        std::vector<DirectedEdge*> *resultAreaEdgeList;
 
        Label label;

        std::vector<DirectedEdge*>* getResultAreaEdges();

        enum {
                SCANNING_FOR_INCOMING=1,
                LINKING_TO_OUTGOING
        };
 
        int computeDepths(EdgeEndStar::iterator startIt,
                EdgeEndStar::iterator endIt, int startDepth);
};
 
 
} // namespace geos.geomgraph
} // namespace geos
 
//#ifdef GEOS_INLINE
//# include "geos/geomgraph/DirectedEdgeEndStar.inl"
//#endif
 
#endif // ifndef GEOS_GEOMGRAPH_DIRECTEDEDGEENDSTAR_H