Hi, I am trying to develop a game engine/application to teach electrical engineering topics (computer networks). I have no need for photorealism in this application. I want to achieve the look of objects (models) with black outlines and shaded and also shadows, but no sort of elaborate texturing ( almost a vecctor graphics illustrative type look). If anyone can point me to resources that may be able to help me develop such a realtime rendering engine to use in the games, I would be very grateful. Also, I would like to be able to allow for the surfaces of objects to fade ( become transparent ) so that the insides can be seen. Together with this, I am planning to have an animation engine capable of displaying these objects and animating them to demonstrate principles such as packet flows in a network and networking protocols. I would be grateful for any help. Umesh Persad http://www.amblemedia.com upersad@tstt.net.tt

go to nvidia.com developers section. they have some stuff on cartoon rendering, they also have some wrapper sdks to make it easier to write an engine