CS 381 Fall 2012
Assignment 2

Assignment 2 is due at 5 p.m. Wednesday, September 19. It is worth 20 points.

Procedures

E-mail answers to the exercises below to ggchappell@alaska.edu, using the subject “GA2”.

• Your answers should consist of the source code for Exercise A. This should be attached to your e-mail message.
• Send only the above! I do not want project files or executables. I also do not want things I already have, like glut.h.
• Be sure to include your name in your e-mail.
• I may not read your homework e-mail immediately. If you wish to discuss the assignment (or anything else) with me, send me a separate message with a different subject line.

Exercises (20 pts total)

Exercise A — Animation & Mouse Interaction

Purpose

In this exercise, you will write an OpenGL/GLUT program that uses the mouse in some significant way. It will also involve user-controlled acceleration/deceleration of moving animated objects.

Instructions

Write an OpenGL program that meets the following requirements.

• The program must be in C or C++ and produce graphical output using OpenGL.
• The program must be GLUT-based, following the rules for callbacks discussed in class.
• The program must use the mouse in some significant, reasonable, noticeable way.
• The program must involve objects that move, at least one of which accelerates and/or decelerates as determined by the user.
  • The moving objects must be properly animated using double buffering.
  • The user must be able to affect the acceleration (for example, through keypresses or mouse input).
  • Placement of objects must be done using the OpenGL model/view transformation.

Notes

• Remember what “acceleration” is. I do not mean simply that the user can change an object’s speed. Rather, an object should smoothly change speed, as with gravity, the thrust of a spaceship, etc.
• Standards for code are as for the first assignment (must compile, readable, following conventions, avoid extra output, clear how program is used, not buggy-looking, give credit, etc.).
• Submitted code may be demonstrated in class.