Flash Tutorials by Ahab

After I finished my last 3d tutorial I felt that I should write one more because I did not want to end this series with something as unpractical as solid objects with backface culling and dynamic lighting. This one will be much more relevant.

This is the second part of a 3D thing I started a few weeks ago. Last time I talked, pretty much, only about the derivation of the rotation matrices for coordinate transformations. It was easy stuff...I hope you can agree with me on that if you read it. If you have not read then do so now.

I just got through with my "Introduction to Trigonometry" tutorial and before I started the continuation of it I just wanted to put down a few math tricks I learned along the way that you can use in Flash.

Let me tell you what this tutorial is going to be over. I am not going to be talking about two dimensional collisions in general, but instead one type: two circles colliding. This is one of the easiest cases to look at.

I'm going to try my best to write this as if the reader has no previous knowledge of math (outside of some basic Algebra at least) and I'll do my best to keep it consistent. There may be flaws or gaps in my logic at which point you can e-mail me and I will do my best to go back over something more s