Papervision3D is now in public beta mode. It has been in development for 7 months now with public access to the SVN for everyone who liked to check it out. This is a pretty stable release. Old users will have to change their SVN address since it is hosted now at Google Code.
Read more here and do not forget to check out the very nice showreel.
Here is a list of some of my older PV3D experiments:
It has not as many features as a real matrix extrude but it looks smooth and organic. It is all calculated at runtime using a Sphere object of Papervision3D and then extruding some faces of it five times based on their face-normal rotated using the Matrix3D class.
I created for this little example a new geometry object that can use any function and rotate that around a center which results in such a mesh. You know this maybe from your favorite 3D application. In this case I abuse the Curve class from my Imageprocessing library as such a function.
Update: Added two versions that use different functions.
This is just an example from what I could put together last night. You see also LED support here and the use of motion data. Still very experimental but I hope you get the idea. Besides of that I am fighting with my blog because my theme is not working with Wordpress 2.1. So I hope I can fix this as well.
By the way I have to say that Papervision3D is just amazing. It is so nice what theese guys put together!