CSE 275, S07, Program 2, Due Thursday, 2/8/07

	Animating a Circle

0. Find OpenGL on the web.  Download.

1. Create a circle: Since OpenGL doesn't have a primitive for a circle,
the next best thing is to create a convex polygon that approximates
your circle.  This involves some judgement and decisions on your
part to feed the proper vertices to the OpenGL polygon prmitive.
You should make the polygon have sufficiently many vertices that
it appears to be a circle.  This is a common graphics approximation
problem.  (5pts)

2. Create an animation of your circle that shows it rolling
from left to right across the screen.  

a) getting this to work at all is worth 5pts
b) getting it to work smoothly and well is worth another 5pts

Step 2 requires calling translation and rotation matrices from
OpenGL and the *experimental* timing to get your frames displayed
so as to have credible movement.

The experimental timing is very work intensive.  Don't leave until
Wednesday night, 2/7/07!

Hints:

There are multiple options to obtain OpenGL for program 2.
As you might imagine, the combinatorial possibilities of keeping up
with each version of each vendor is overwhelming. 

As an alternative practical approach, consider what you need for this project:

1. the ability to create a polygon in OpenGL
2. rotate and translate it in OpenGL.

You will need the specific matrices to co-ordinate the frame rate
of your animation with your architecture.  That is experimental.

As an initial test, see if you can create a triangle for #1, above
and then do one rotation and one translation of it.  You should try
this triangle test *before* seeing Mr. Miller and expect that he can
help you with questions about that specific triangular problem.

The rest of the project (which is non-trivial) is your responsibility.