CMSI 370
IN T E R A C T I O N DE S I G N
Fall 2006
Assignment 1212 (Juniors Only)
This is the only time that an assignment like this will be given — so consider yourselves special >;-) The
seniors have been down this road before, so they’ll get a “bye” on this one.
For Submission
Get your hands dirty with OpenGL — take the
spinningsquare.cpp program and make the following
changes to it:
1. Change the object being drawn. Go on, be crea-
tive, knock yourself out.
2. Change the way the object spins: speed, frame
rate, direction. Get a good feel for how these
changes affect the final result.
3. Change the title, initial size, and initial location
of the window.
Commit your program under /homework/cmsi370/
spinningshape, and tag it as hw-1212.
Extra Credit
A little advanced reading in OpenGL will allow you
to make the following additional changes to the
program. Do them all and get extra credit:
1. Change the axis of the object’s rotation (the
sample version rotates around the z axis).
2. Implement the following keyboard controls (and
their corresponding functions):
a. + and – increase and decrease the rate of
rotation, respectively.
b. [ and ] decrease and increase the frame rate
of the animation.
c. The C key changes the object’s color (or
color scheme, in case you figured out how to
draw objects with multiple colors).
d. The S key changes the object being drawn
(i.e., rotate among 2 or more different ob-
jects as the user hits the S key).
Just include these features in /homework/cmsi370/
spinningshape with the same tag; I’ll look for them
when I go through your code.