psychWithJava
Class Extras

java.lang.Object
  psychWithJava.Extras

public class Extras
extends java.lang.Object

Contains methods for some common tasks and purposes

Since:

2012-03-14

Author:

boyaci

Constructor Summary

Extras()

Method Summary

static void	beep(int hz, int msecs) Generates a tone
static java.awt.image.BufferedImage	gabor(int mean, double cpp, double contrast, double phase, int sigma, double orientation) Generates a Gabor patch
static java.io.PrintWriter	setOutputFile(java.lang.String prefix) Opens an output file with the specified prefix followed by the date.

Methods inherited from class java.lang.Object

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

Constructor Detail

Extras

public Extras()

Method Detail

gabor

public static java.awt.image.BufferedImage gabor(int mean,
                                                 double cpp,
                                                 double contrast,
                                                 double phase,
                                                 int sigma,
                                                 double orientation)
                                          throws PixelOutOfRangeException

Generates a Gabor patch

Parameters:

mean - Mean luminance (pixel value 0-255)

cpp - Frequency, cycles per pixel

contrast - Half the amplitude of the sinusoidal (Michelson Contrast)

phase - Phase shift of the sinusoidal

sigma - Sigma of the Gaussian envelope, affects the diameter of the Gabor

orientation - Angle of rotation, 0 is vertical

Returns:

Gabor patch in a BufferedImage

Throws:

java.lang.Exception

PixelOutOfRangeException

setOutputFile

public static java.io.PrintWriter setOutputFile(java.lang.String prefix)
                                         throws java.io.FileNotFoundException

Opens an output file with the specified prefix followed by the date. If one or more files exist with the same date, it generates the new file with a version suffix.

Parameters:

prefix - For example subject id

Returns:

Throws:

java.io.FileNotFoundException

beep

public static void beep(int hz,
                        int msecs)
                 throws javax.sound.sampled.LineUnavailableException

Generates a tone

Parameters:

hz - Affects the pitch of the tone

msecs - Duration of the tone

Throws:

javax.sound.sampled.LineUnavailableException