The Software You Want (Score 1)

Derivative's Touch Software is exactly what you're asking for. Its a real-time full-featured 3D modelling and animation program tied in with a compositing and a pile of other goodies. All aspects are modifiable in real-time and you can create your own slider interfaces to control exactly the parameters you choose. Their software is based on Side Effects' well known high end 3D effects package, Houdini. You can play around with the synth's on Derivative's website by downloading the player software or get the designer software for a free 30 day trial to see how it works.