Thanks, I'll give it a check, and try to work from that point. 

If i manage to accomplsh what i want i can publish the solution, for someone else who needs it.

Thanks for your help. If you have something that creates this OBJ file, please send me. Even if its in some other language, i can give it a check and try to convert it.

im using an SDK that loads OBJ, FBX and MD2 files, and uses it in an augmented reality environment.

I would like to build my models to load it on this SDK.

Basic example: I would like to have an activity where the user specifies with form he would like to build (box, sphere, cylinder) and respective properties (size, radius, etc); and a second activity where i could use the SDK to simply read the object created by the user.

Does anyone tried to build dynamically a 3D Model and save it as .OBJ file with respective .MTL ?

Does jPCT 3D engine support save .OBJ model, or just supports the viewer of this model?

Thanks.