viewer for pro/e,UG?

I am trying to do a CAD Viewer project and want to import 3d format of PRO/E and UG,etc(such like that),so far I can import 3ds ,dxf and obj now.Could u please offer me some web link with the relevant code for PRO/E and UG ?Thanks a lot!

AFAIK, there is no source code available por Pro/E and UG (and in fact any proprietary CAD format). but maybe opencascade ( could be of some help : it feature quality step and iges import.


For opening UG files you can try using parasolid kernel.