
To run the VSR demo you will need the J2SE Java Runtime Environment.
It is available from:

    http://java.sun.com/j2se/1.4.2/download.html


To run under Windows you may simply double-click on "scrollring.jar".


To run the VSR demo from the command line, type:

    java -jar scrollring.jar


Virtual Scroll Ring Instructions:

    * Click once to activate VSR. (Do not hold down button.)

    * Clockwise circles scroll down.

    * Counterclockwise circles scroll up.

    * Try to keep the mouse pointer inside the window.

 Depending on the mouse event frequency of your system, you may want to
 change the number of points used in estimating the circle. If the
 circle estimate appears to lag, move the slider below to the left. If
 the scrolling motion is seems jerky, move the slider to the right.  

 The "Show VSR Indicator" checkbox toggles visualization of the
 estimated circle on and off. The "Show History" checkbox allows you 
 to view the path used for the estimate.
