Here's one I made a while back...
http://www.blitzbasic.com/codearcs/codearcs.php?code=2116
Note that's its pretty math-intensive, and you'll need a fairly decent machine if you're intending to run it real-time.
http://www.blitzbasic.com/codearcs/codearcs.php?code=2116
Note that's its pretty math-intensive, and you'll need a fairly decent machine if you're intending to run it real-time.