com.revolsys.jts.geomgraph.index

Class SweepLineEvent

java.lang.Object

com.revolsys.jts.geomgraph.index.SweepLineEvent

All Implemented Interfaces:

Comparable

public class SweepLineEvent
extends Object
implements Comparable

Version:

1.7

Constructor Summary

Constructors

Constructor and Description
SweepLineEvent(double x, SweepLineEvent insertEvent) Creates a DELETE event.
SweepLineEvent(Object label, double x, Object obj) Creates an INSERT event.

Method Summary

Methods

Modifier and Type	Method and Description
int	compareTo(Object o) Events are ordered first by their x-value, and then by their eventType.
int	getDeleteEventIndex()
SweepLineEvent	getInsertEvent()
Object	getObject()
boolean	isDelete()
boolean	isInsert()
boolean	isSameLabel(SweepLineEvent ev)
void	setDeleteEventIndex(int deleteEventIndex)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SweepLineEvent

public SweepLineEvent(double x,
              SweepLineEvent insertEvent)

Creates a DELETE event.

Parameters:

x - the event location

insertEvent - the corresponding INSERT event

SweepLineEvent

public SweepLineEvent(Object label,
              double x,
              Object obj)

Creates an INSERT event.

Parameters:

label - the edge set label for this object

x - the event location

obj - the object being inserted

Method Detail

compareTo

public int compareTo(Object o)

Events are ordered first by their x-value, and then by their eventType. Insert events are sorted before Delete events, so that items whose Insert and Delete events occur at the same x-value will be correctly handled.

Specified by:

compareTo in interface Comparable

getDeleteEventIndex

public int getDeleteEventIndex()

getInsertEvent

public SweepLineEvent getInsertEvent()

getObject

public Object getObject()

isDelete

public boolean isDelete()

isInsert

public boolean isInsert()

isSameLabel

public boolean isSameLabel(SweepLineEvent ev)

setDeleteEventIndex

public void setDeleteEventIndex(int deleteEventIndex)