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SweepLineEvent.h

00001 /**********************************************************************
00002  * $Id: SweepLineEvent.h 2556 2009-06-06 22:22:28Z strk $
00003  *
00004  * GEOS - Geometry Engine Open Source
00005  * http://geos.refractions.net
00006  *
00007  * Copyright (C) 2006 Refractions Research Inc.
00008  *
00009  * This is free software; you can redistribute and/or modify it under
00010  * the terms of the GNU Lesser General Public Licence as published
00011  * by the Free Software Foundation. 
00012  * See the COPYING file for more information.
00013  *
00014  **********************************************************************/
00015 
00016 #ifndef GEOS_INDEX_SWEEPLINE_SWEEPLINEEVENT_H
00017 #define GEOS_INDEX_SWEEPLINE_SWEEPLINEEVENT_H
00018 
00019 #include <geos/export.h>
00020 
00021 // Forward declarations
00022 namespace geos {
00023         namespace index { 
00024                 namespace sweepline { 
00025                         class SweepLineInterval;
00026                 }
00027         }
00028 }
00029 
00030 namespace geos {
00031 namespace index { // geos.index
00032 namespace sweepline { // geos:index:sweepline
00033 
00034 class GEOS_DLL SweepLineEvent {
00035 
00036 public:
00037 
00038         enum {
00039                 INSERT_EVENT = 1,
00040                 DELETE_EVENT
00041         };
00042 
00043         SweepLineEvent(double x, SweepLineEvent *newInsertEvent,
00044                         SweepLineInterval *newSweepInt);
00045 
00046         bool isInsert();
00047 
00048         bool isDelete();
00049 
00050         SweepLineEvent* getInsertEvent();
00051 
00052         int getDeleteEventIndex();
00053 
00054         void setDeleteEventIndex(int newDeleteEventIndex);
00055 
00056         SweepLineInterval* getInterval();
00057 
00064         int compareTo(const SweepLineEvent *pe) const;
00065 
00066         //int compareTo(void *o) const;
00067 
00068 private:
00069 
00070         double xValue;
00071 
00072         int eventType;
00073 
00075         SweepLineEvent *insertEvent;
00076 
00077         int deleteEventIndex;
00078 
00079         SweepLineInterval *sweepInt;
00080 
00081 };
00082 
00083 // temp typedefs for backward compatibility
00084 //typedef SweepLineEvent indexSweepLineEvent;
00085 
00086 struct GEOS_DLL  SweepLineEventLessThen {
00087         bool operator() (const SweepLineEvent* first, const SweepLineEvent* second) const;
00088 };
00089 
00090 //bool isleLessThen(SweepLineEvent *first, SweepLineEvent *second);
00091 
00092 
00093 } // namespace geos:index:sweepline
00094 } // namespace geos:index
00095 } // namespace geos
00096 
00097 #endif // GEOS_INDEX_SWEEPLINE_SWEEPLINEEVENT_H
00098 
00099 /**********************************************************************
00100  * $Log$
00101  * Revision 1.1  2006/03/21 10:01:30  strk
00102  * indexSweepline.h header split
00103  *
00104  **********************************************************************/
00105 

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