util

Class Randomizer

java.lang.Object

util.Randomizer

All Implemented Interfaces:

IRandomizer

public class Randomizer
extends java.lang.Object
implements IRandomizer

Utility class that supplies class routines for generating various random values

Field Summary

Fields

Modifier and Type	Field and Description
static Randomizer	Singleton

Constructor Summary

Constructors

Modifier	Constructor and Description
private	Randomizer()

Method Summary

Methods

Modifier and Type	Method and Description
java.awt.Rectangle	randomBounds(java.awt.Rectangle rect, java.awt.Dimension maxDim) Generates a randomly located and sized rectangle
java.lang.Object	randomChoice(java.lang.Object x, java.lang.Object y, double probX) Returns a random choice of one of two objects, x and y, where probX is the probability that x will be picked (0<=x<=1).
java.awt.Color	randomColor() Generates a random color
java.awt.Dimension	randomDim(java.awt.Dimension maxDim) Returns a random square Dimension, whose width is maxDim.width/2<=width<=maxDim.width
double	randomDouble(double min, double max) Returns a random double greater than or equal to min and less than or equal to max.
int	randomInt(int min, int max) Returns a random integer greater than or equal to min and less than or equal to max.
java.awt.Point	randomLoc(java.awt.Dimension dim) Generates a random location point subject to the constraint that 0<=X<=maxX and 0<=Y<=maxY.
java.awt.Point	randomLoc(java.awt.Rectangle rect) Generates a random location point subject to the constraint that 0<=X<=maxX and 0<=Y<=maxY.
java.awt.Point	randomVel(java.awt.Rectangle rect) Returns a random velocity (as a Point) subject to the constraint that the absolute value of the vleocity (speed) is less than maxV.

Methods inherited from class java.lang.Object

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

Field Detail

Singleton

public static Randomizer Singleton

Constructor Detail

Randomizer

private Randomizer()

Method Detail

randomLoc

public java.awt.Point randomLoc(java.awt.Rectangle rect)

Generates a random location point subject to the constraint that 0<=X<=maxX and 0<=Y<=maxY.

Specified by:

randomLoc in interface IRandomizer

randomLoc

public java.awt.Point randomLoc(java.awt.Dimension dim)

Generates a random location point subject to the constraint that 0<=X<=maxX and 0<=Y<=maxY.

Specified by:

randomLoc in interface IRandomizer

randomInt

public int randomInt(int min,
            int max)

Returns a random integer greater than or equal to min and less than or equal to max.

Specified by:

randomInt in interface IRandomizer

randomDouble

public double randomDouble(double min,
                  double max)

Returns a random double greater than or equal to min and less than or equal to max.

Specified by:

randomDouble in interface IRandomizer

randomVel

public java.awt.Point randomVel(java.awt.Rectangle rect)

Returns a random velocity (as a Point) subject to the constraint that the absolute value of the vleocity (speed) is less than maxV.

Specified by:

randomVel in interface IRandomizer

randomDim

public java.awt.Dimension randomDim(java.awt.Dimension maxDim)

Returns a random square Dimension, whose width is maxDim.width/2<=width<=maxDim.width

Specified by:

randomDim in interface IRandomizer

randomBounds

public java.awt.Rectangle randomBounds(java.awt.Rectangle rect,
                              java.awt.Dimension maxDim)

Generates a randomly located and sized rectangle

Specified by:

randomBounds in interface IRandomizer

randomColor

public java.awt.Color randomColor()

Generates a random color

Specified by:

randomColor in interface IRandomizer

randomChoice

public java.lang.Object randomChoice(java.lang.Object x,
                            java.lang.Object y,
                            double probX)

Returns a random choice of one of two objects, x and y, where probX is the probability that x will be picked (0<=x<=1).

Specified by:

randomChoice in interface IRandomizer