Includes angular velocity calculations. Compare the effects on
the ball under conditions of No Spin, Top Spin and Back Spin.
Use WebStart to run: ball.jnlp
Or, if that doesn't work run from the jar: java -jar ball.jar
I heard a lot of good things about wxPython and even used it recently in a project that needed a simple GUI. I was less than impressed with its drawing capabilities.
An alternative to the postscript approach. The perl script generates SVG (an XML based vector graphics format).