generator2
Class ExternalObjectGenerator

java.lang.Object
  |
  +--generator2.ExternalObjectGenerator

public class ExternalObjectGenerator

extends java.lang.Object

Class for creating and modifying external objects.

Field Summary

protected ExternalObjectClasses	classes Classes of external objects.
protected static int	currId The counter for the identifiers.
protected DataSpace	dataspace Dataspace of the network.
protected int	numOfExtObjAtBeginning Number of external objects at the beginning.
protected int	numOfExtObjPerTime Number of generated external objects per time.
protected java.util.Properties	properties Properties of the generator.
protected java.util.Random	random Random generator.
protected Time	time The time object.

Constructor Summary

ExternalObjectGenerator(java.util.Properties properties, Time time, DataSpace dataspace, ExternalObjectClasses classes, int numOfExtObjPerTime, int numOfExtObjAtBeginning)
Constructor.

Method Summary

ExternalObject	computeExternalObject(int time) Computes a new external object.
MBR	computeNewPositionAndSize(int time, ExternalObject obj) Computes the new position and size of an external object.
boolean	externalObjectsExist() Returns whether external objects exist or not.
int	numberOfNewObjects(int time) Returns the number of new external objects at a time stamp.

Methods inherited from class java.lang.Object

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

Field Detail

currId

protected static int currId

The counter for the identifiers.

properties

protected java.util.Properties properties

Properties of the generator.

time

protected Time time

The time object.

dataspace

protected DataSpace dataspace

Dataspace of the network.

classes

protected ExternalObjectClasses classes

Classes of external objects.

numOfExtObjPerTime

protected int numOfExtObjPerTime

Number of generated external objects per time.

numOfExtObjAtBeginning

protected int numOfExtObjAtBeginning

Number of external objects at the beginning.

random

protected java.util.Random random

Random generator.

Constructor Detail

ExternalObjectGenerator

public ExternalObjectGenerator(java.util.Properties properties,
                               Time time,
                               DataSpace dataspace,
                               ExternalObjectClasses classes,
                               int numOfExtObjPerTime,
                               int numOfExtObjAtBeginning)

Constructor.

Parameters:

properties - properties of the generator

time - the time object

dataspace - the dataspace

classes - the classes of external objects

numOfExtObjPerTime - number of external objects per time

numOfExtObjAtBeginning - number of external objects at the beginning

Method Detail

computeExternalObject

public ExternalObject computeExternalObject(int time)

Computes a new external object.

Parameters:

time - the time stamp

Returns:

the new object

computeNewPositionAndSize

public MBR computeNewPositionAndSize(int time,
                                     ExternalObject obj)

Computes the new position and size of an external object.

Parameters:

time - actual time

obj - the external object

Returns:

the mbr of the external object if no change has occured or a new created rectangle with the new position and/or size

externalObjectsExist

public boolean externalObjectsExist()

Returns whether external objects exist or not.

Returns:

exist?

numberOfNewObjects

public int numberOfNewObjects(int time)

Returns the number of new external objects at a time stamp.

Parameters:

time - the time stamp

Returns:

number of objects