This is a simple OpenGL instrument based on a really rudimentary
interpretation of Fred Lerdahl's pitch-space theory.  The colored
balls represent pitchs, as you get closer to one the probability of
hearing that particular pitch goes up as a function of distance.

The LEFT and RIGHT arrow keys move you left and right, the UP and
DOWN arrow keys move you forwards and backwards, and the keys "u"
and "d" move you up and down.  The left and right mouse buttons
pan the view around.  Typing "h" will reset everything to a default
position.  The space bar toggles a 'scrolling' mode on or off, allowing
you to fly around the pitch space while enjoying the ride/view.  Wheeeeee!

ESC will shut the interface down, but unfortunately it doesn't terminate
the RTcmix process cleanly.  Issuing the "killem" command (usually in
/musr/bin) should shut it all off correctly.

I included the libaux OpenGL libraries here, just in case you don't
have them...

Have fun!

brad
