com.soundhelix.util

Class ConsistentRandom

java.lang.Object

com.soundhelix.util.ConsistentRandom

public class ConsistentRandom
extends Object

Implements a consistent random generator. Each method of this class will return the same random value consistently, given the same class instance and the same parameter combination. Internally, some seeds are generated upon instantiation, and these seeds are used in combination with the given seed and other parameters to instantiate and use a Random instance. For different parameters the Random class will be seeded differently with a very high probability.

Author:

Thomas Schuerger (thomas@schuerger.com)

Constructor Summary

Constructors

Constructor and Description
ConsistentRandom(long randomSeed) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	getBoolean(long seed) Returns a boolean based on the given seed.
boolean	getBoolean(Object seedObject) Returns a boolean based on the given seed object.
int	getInteger(int min, int max, long seed) Returns a random integer between min and max (both inclusive), based on the given seed.
int	getInteger(int min, int max, Object seedObject) Returns a random integer between min and max (both inclusive), based on the given seedObject.

Methods inherited from class java.lang.Object

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

Constructor Detail

ConsistentRandom

public ConsistentRandom(long randomSeed)

Constructor.

Parameters:

randomSeed - the random seed

Method Detail

getInteger

public int getInteger(int min,
             int max,
             long seed)

Returns a random integer between min and max (both inclusive), based on the given seed.

Parameters:

min - the minimum value

max - the maximum value (inclusive)

seed - the random seed

Returns:

a random integer

getInteger

public int getInteger(int min,
             int max,
             Object seedObject)

Returns a random integer between min and max (both inclusive), based on the given seedObject.

Parameters:

min - the minimum value

max - the maximum value

seedObject - the seed object

Returns:

an integer between min and max (both inclusive)

getBoolean

public boolean getBoolean(long seed)

Returns a boolean based on the given seed.

Parameters:

seed - the seed

Returns:

the boolean

getBoolean

public boolean getBoolean(Object seedObject)

Returns a boolean based on the given seed object.

Parameters:

seedObject - the seed object

Returns:

the boolean