hmi.elckerlyc.util.timemanipulator
Class SigmoidManipulator

java.lang.Object
  hmi.elckerlyc.util.timemanipulator.SigmoidManipulator

All Implemented Interfaces:

TimeManipulator

public class SigmoidManipulator
extends Object
implements TimeManipulator

Provides slow-fast-slow interpolation (=a bubble-shaped velocity profile) manip(t)=0.5 . (1+tanh(a.x^p) - 0.5 a determines the steepness p determines the lenght of the accelatory phase plausible values: a=3,p=4

Author:

welberge

Field Summary

private double	a
private double	p

Constructor Summary

SigmoidManipulator(double steepness, double acclength)
Constructor

Method Summary

double

manip(double t) manipulates t

Methods inherited from class java.lang.Object

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

Field Detail

a

private double a

p

private double p

Constructor Detail

SigmoidManipulator

public SigmoidManipulator(double steepness,
                          double acclength)

Constructor

Parameters:

steepness -

acclength - length of the accelatory phase

Method Detail

manip

public double manip(double t)

manipulates t

Specified by:

manip in interface TimeManipulator

Parameters:

t - the time to be manipulated

Returns:

manip(t)=0.5 . (1+tanh(a.x^p) - 0.5