com.perisic.sound
Class NiceFunction

java.lang.Object
  com.perisic.sound.NiceFunction

public class NiceFunction
extends java.lang.Object

A "nice" function that is used as a basis for defining the pitch, instrument selection or velocity of a voice.

Nice means here roughly mostly continuous (only a small number of jumps) where the pieces are either constants or defined by cubic polynomials.

Copyright:(c) Marc Conrad, Tim French 2006; Usage of the works is permitted provided that this instrument is retained with the works, so that any entity that uses the works is notified of this instrument. DISCLAIMER: THE WORKS ARE WITHOUT WARRANTY.

Author:

Marc

Constructor Summary

NiceFunction(java.util.Random g)
Initialization by a random number generator.

Method Summary

java.awt.image.BufferedImage	addToImage(java.awt.image.BufferedImage img, java.awt.Color myColor) Add a graph of this method to the image img.
double	eval(double x) Evaluation of the function for a value x.
java.awt.image.BufferedImage	getImage(java.awt.Color c) Returns a graph of this method of the fixed size 150x100.
static void	main(java.lang.String[] args) Used for testing purpose only.

Methods inherited from class java.lang.Object

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

Constructor Detail

NiceFunction

public NiceFunction(java.util.Random g)

Initialization by a random number generator. The function is fully determined by this random object.

Parameters:

g - A random number generator.

Method Detail

eval

public double eval(double x)

Evaluation of the function for a value x.

Parameters:

x - The value against which the function is evaluated.

Returns:

f(x) where f is this object.

addToImage

public java.awt.image.BufferedImage addToImage(java.awt.image.BufferedImage img,
                                               java.awt.Color myColor)

Add a graph of this method to the image img.

Parameters:

img - the original image.

myColor - The colour which is used to paint the graph.

Returns:

the parameter img (which is changed by this method).

getImage

public java.awt.image.BufferedImage getImage(java.awt.Color c)

Returns a graph of this method of the fixed size 150x100. For variable size use the method addToImage(BufferedImage img, Color c);

Parameters:

c - The colour which is used to paint the graph.

Returns:

the parameter img (which is changed by this method).

main

public static void main(java.lang.String[] args)

Used for testing purpose only. Evaluates 100 nice functions.

Parameters:

args - no parameters.