Kepler's Orrery
A gravity simulator that composes Generative music.


News! Kepler's Orrery is now Open Source.
The player code has been released under GPL; the worlds (think of them as the "songs") under Creative Commons (attribution, share-alike). I'm hosting the code on java.net. You can browse the source code anonymously, and download the source if you register (free) and log in.
Watch some videos!
See it running live in an applet!
Some notes about the algorithm
Acknowledgements:
Portions of the n-body simulator code were derived from code supplied with Introduction to Programming in Java: An Interdisciplinary Approach, by Robert Sedgewick and Kevin Wayne, Addison-Wesley, 2007. ISBN 0-321-49805-4
http://www.cs.princeton.edu/IntroProgramming
(See the source code for details)