index/sweepline/SweepLineEvent.h

/**********************************************************************
 *
 * GEOS - Geometry Engine Open Source
 * http://geos.osgeo.org
 *
 * Copyright (C) 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_INDEX_SWEEPLINE_SWEEPLINEEVENT_H
#define GEOS_INDEX_SWEEPLINE_SWEEPLINEEVENT_H
 
#include <geos/export.h>
 
// Forward declarations
namespace geos {
        namespace index { 
                namespace sweepline { 
                        class SweepLineInterval;
                }
        }
}
 
namespace geos {
namespace index { // geos.index
namespace sweepline { // geos:index:sweepline
 
class GEOS_DLL SweepLineEvent {
 
public:
 
        enum {
                INSERT_EVENT = 1,
                DELETE_EVENT
        };
 
        SweepLineEvent(double x, SweepLineEvent *newInsertEvent,
                        SweepLineInterval *newSweepInt);
 
        bool isInsert();
 
        bool isDelete();
 
        SweepLineEvent* getInsertEvent();
 
        int getDeleteEventIndex();
 
        void setDeleteEventIndex(int newDeleteEventIndex);
 
        SweepLineInterval* getInterval();

        int compareTo(const SweepLineEvent *pe) const;
 
        //int compareTo(void *o) const;
 
private:
 
        double xValue;
 
        int eventType;

        SweepLineEvent *insertEvent;
 
        int deleteEventIndex;
 
        SweepLineInterval *sweepInt;
 
};
 
// temp typedefs for backward compatibility
//typedef SweepLineEvent indexSweepLineEvent;
 
struct GEOS_DLL  SweepLineEventLessThen {
        bool operator() (const SweepLineEvent* first, const SweepLineEvent* second) const;
};
 
//bool isleLessThen(SweepLineEvent *first, SweepLineEvent *second);
 
 
} // namespace geos:index:sweepline
} // namespace geos:index
} // namespace geos
 
#endif // GEOS_INDEX_SWEEPLINE_SWEEPLINEEVENT_H