SweepLineEvent.h

00001 /**********************************************************************
00002  * $Id: SweepLineEvent.h 1820 2006-09-06 16:54:23Z mloskot $
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 // Forward declarations
00020 namespace geos {
00021         namespace index { 
00022                 namespace sweepline { 
00023                         class SweepLineInterval;
00024                 }
00025         }
00026 }
00027 
00028 namespace geos {
00029 namespace index { // geos.index
00030 namespace sweepline { // geos:index:sweepline
00031 
00032 class SweepLineEvent {
00033 
00034 public:
00035 
00036         enum {
00037                 INSERT_EVENT = 1,
00038                 DELETE_EVENT
00039         };
00040 
00041         SweepLineEvent(double x, SweepLineEvent *newInsertEvent,
00042                         SweepLineInterval *newSweepInt);
00043 
00044         bool isInsert();
00045 
00046         bool isDelete();
00047 
00048         SweepLineEvent* getInsertEvent();
00049 
00050         int getDeleteEventIndex();
00051 
00052         void setDeleteEventIndex(int newDeleteEventIndex);
00053 
00054         SweepLineInterval* getInterval();
00055 
00062         int compareTo(const SweepLineEvent *pe) const;
00063 
00064         //int compareTo(void *o) const;
00065 
00066 private:
00067 
00068         double xValue;
00069 
00070         int eventType;
00071 
00073         SweepLineEvent *insertEvent;
00074 
00075         int deleteEventIndex;
00076 
00077         SweepLineInterval *sweepInt;
00078 
00079 };
00080 
00081 // temp typedefs for backward compatibility
00082 //typedef SweepLineEvent indexSweepLineEvent;
00083 
00084 struct SweepLineEventLessThen {
00085         bool operator() (const SweepLineEvent* first, const SweepLineEvent* second) const;
00086 };
00087 
00088 //bool isleLessThen(SweepLineEvent *first, SweepLineEvent *second);
00089 
00090 
00091 } // namespace geos:index:sweepline
00092 } // namespace geos:index
00093 } // namespace geos
00094 
00095 #endif // GEOS_INDEX_SWEEPLINE_SWEEPLINEEVENT_H
00096 
00097 /**********************************************************************
00098  * $Log$
00099  * Revision 1.1  2006/03/21 10:01:30  strk
00100  * indexSweepline.h header split
00101  *
00102  **********************************************************************/
00103 

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