Animation Math in Lingo – Tutorial & Demos in Director
Pretty nice tutorial site for animation, includes topics such as vectors, forces, gravity, friction, springs, mass, sine and cosine, collision and more.
Don’t be put off by the fact that it is in Lingo either, all the code is clear and well commented as is the text.
From the site:
This is a guide to programming animation with Director’s Lingo. It’s a series that progresses in textbook fashion from simple to advanced animation programming. The three types of generating animation covered are incremental, parametric, and recorded. In addition there are some sections on important topics like model/display separation, object-oriented programming, and 3D concepts.