While not exactly what you want, and more than a little imperfect, you should be aware of Velocity Raptor[1] [1] http://www.testtubegames.com/velocityraptor.ht

While not exactly what you want, and more than a little imperfect, you should be aware of Velocity Raptor[1] [1] http://www.testtubegames.com/velocityraptor.html http://www.testtubegames.com/velocityraptor.html