3D file formats

Hi,

I am back from my trekking trip and ready to do some 3D work again... 
One crucial part of the new 3DKit will be its flexibility wrt 3D file 
formats. I believe it is very important to have a generic mechanism in 
place which easily allows programmers to write and integrate 3D file 
format readers/writers. I see several possibilities for this:

- a G3DDatabase class which uses special reader and writer classes to 
import and export 3D scenes

- a class cluster similar to image handling in the AppKit

- no special mechanism but many readers/writers as part of a 3DKit 
utility framework

- ... other proposals?

I favour the G3DDatabase approach because this offers more power than 
just import and export functionality, ie. scene rep optimisations or 
conversions could be integrated as well.

Anyone?

-Phil

PS: Expect the (non functional) new source tree to appear on Savannah 
within days.
--
Philippe C.D. Robert
http://www.nice.ch/~phip