I have done quite a bit of revision to my library that now allows processing sketches to be PovRAY ray-traced from the processing ide. With a conservative quality, setting scenes are traced almost immediately, otherwise you can watch them being rendered in a PovRAY window before they are displayed in the sketch window. Get the new library here  https://github.com/monkstone/povrender/wiki or clone the project if you'd like to get involved (particularly any MAC users). The old library is still available at java.net, as this version is incompatible with the old version I intend to keep the old version available, just in case you had the old library, tried the new version and want to revert back.