[plt-scheme] 3-D graphics

I attended a talk yesterday on using 3-D animation to teach  
mathematical concepts.  The presenter was using either (a C/C++  
library named DarkGDK) or SecondLife, but I imagine a lot of the same  
things could be done with Alice.  And if we perceive Alice as a  
serious competitor for "how to teach beginning programming," it would  
be nice if we could beat (or at least meet) her on her own turf --  
fun, highly-motivating, attractive 3-D animation accessible to first- 
semester students.

So there's this OpenGL binding bundled with PLT Scheme.  Who out  
there has played with it?  I'd like to write (or, even better, get  
somebody else to write!) a beginner-friendly, functional front end  
for it that allows first-semester students to build 3-D animations,  
with not much more difficulty than the 2-D animations we do with  
world, sb-world, or universe.  Is anybody working on this sort of thing?

Stephen Bloch
sbloch at adelphi.edu