geomgraph/GraphComponent.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/GraphComponent.java r428 (JTS-1.12+)
 *
 **********************************************************************/
 
 
#ifndef GEOS_GEOMGRAPH_GRAPHCOMPONENT_H
#define GEOS_GEOMGRAPH_GRAPHCOMPONENT_H
 
#include <geos/export.h>
#include <geos/inline.h>
 
#include <geos/geomgraph/Label.h>
 
// Forward declarations
namespace geos {
        namespace geom {
                class IntersectionMatrix;
        }
}
 
namespace geos {
namespace geomgraph { // geos.geomgraph
 

class GEOS_DLL GraphComponent {
public:
        GraphComponent();
 
        /*
         * GraphComponent copies the given Label.
         */
        GraphComponent(const Label& newLabel); 
        virtual ~GraphComponent();
 
        Label& getLabel() { return label; }
        const Label& getLabel() const { return label; }
        void setLabel(const Label& newLabel) { label = newLabel; }
 
        virtual void setInResult(bool isInResult) { isInResultVar=isInResult; }
        virtual bool isInResult() const { return isInResultVar; }
        virtual void setCovered(bool isCovered);
        virtual bool isCovered() const { return isCoveredVar; }
        virtual bool isCoveredSet() const { return isCoveredSetVar; }
        virtual bool isVisited() const { return isVisitedVar; }
        virtual void setVisited(bool isVisited) { isVisitedVar = isVisited; }
        virtual bool isIsolated() const=0;
        virtual void updateIM(geom::IntersectionMatrix& im);
protected:
        Label label;
        virtual void computeIM(geom::IntersectionMatrix& im)=0;
private:
        bool isInResultVar;
        bool isCoveredVar;
        bool isCoveredSetVar;
        bool isVisitedVar;
};
 
} // namespace geos.geomgraph
} // namespace geos
 
#endif // ifndef GEOS_GEOMGRAPH_GRAPHCOMPONENT_H