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.
 *
 **********************************************************************/
 
#pragma once
 
#include <cstddef>
#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();
 
    std::size_t getDeleteEventIndex();
 
    void setDeleteEventIndex(std::size_t newDeleteEventIndex);
 
    SweepLineInterval* getInterval();
 
    int compareTo(const SweepLineEvent* pe) const;
 
    //int compareTo(void *o) const;
 
private:
 
    double xValue;
 
    int eventType;
 
    SweepLineEvent* insertEvent;
 
    std::size_t 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