Kevin Harris

CS431: Introduction to Computer Graphics

University of Utah

Fall 1997

Program #1

Class Handout
My implementation See a working version below. Note that I have not checked this implementation for bugs since the class ended. There may be some bugs that I didn't find back then (4 years ago).

Notes:

This was my first real Java program. The first day of this class, Pete Shirley told us that we had a test the next class period and that we had 1 week to learn Java and turn in our first assignment. What a great way to weed out the people who aren't committed. :)
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For delay and speed, bigger numbers make it rotate slower
The speed is the number of divisions per complete rotation (int)
Verticies must be a number >1
My additions (not required):
- Star/Poly:
  Because it is difficult to see rotation in shapes with a larger number of verticies, I have introduced a 'star' option that will connect each vertex to every other vertex. This makes a form of a 'star' pattern and makes it easier to see rotation than the wobbly edges of something that looks like a circle. The Poly option will connect every vertex to it's adjacent verticies.
- Speed/Delay controls:
  I could not find a speed that matched the demo, so I added controls to allow the user to select his/her own rotational 'speed' and delay between each drawing of the polygon (in ms).