I am trying to use unity3D game engine for making 3D class presentations/lectures instead of ppt. I want to teach physics with use of 3D animation and slides in class. Do you know any other best engine instead of unity3D? In unity3D i have some problems about making arrows attached to objects moving in space. The arrow can change direction according to force or direction of body and its magnitude could change according to magnitude of force/velocity. Also there are some issues related to fonts etc.
Please guide me to choose suitable 3D platform for this purpose.
Thanks in advance,