Computer Science 112
The Art & Science of Computer Graphics

Spring 2013, The College of Saint Rose

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Agenda

• Announcements
• Ongoing tasks
  • Final Project proposals should all be in, implementation underway
  • Studio/Lab Bonus 1: Stained Glass Windows if you are interested
  • Studio/Lab 9: Animation underway as well
• Additional bonus opportunity: you may submit up to 4 additional shared models, using the same guidelines as in Studio/Lab 7: Shared Models. You can earn up to 5 Studio/Lab bonus points for each additional shared model you submit. Models may be submitted until 4:00 PM on May 2.
• Lecture assignment 22 recap
• Some advanced topics we will not cover, but which may be of interest, are covered in the "Patch Mesh" and "Advanced Mead Functionality" notes linked from the schedule page. These include a Bezier-based generalization of the Mesh objects we saw earlier, a generalization of extrude called a loft, and a way to add fog to your scene.
• More animation
  • animating multiple objects
  • relative vs. absolute transformations
• In-class exercise. Take any static (i.e., not animated) Mead model, either a class example or a model of your own, and add some simple animation.

  This will be submitted by class demonstration during our next class meeting.

Lecture Assignment 23

Due at the start of class, Tuesday, April 23.

Please submit answers to these questions either as a hard copy (typeset or handwritten are OK) or by email to terescoj AT strose.edu by the start of class. Please use a clear subject line when submitting by email (e.g., CSC 112 Lecture Assignment 23, Joe Student). We will discuss these questions at the start of class, so no late submissions are accepted.

(10 points) Suppose you wish to use a film message to the camera to create an animation. Assume that you have an adjustment function called adjFunc. It expects two parameters: a position and a color. Don't worry about what objects adjFunc uses with these positions and colors. Assume you want to create an animation with 25 frames and that you wish to have the positions vary according to a cubic bezier path defined by positions you have named a, b, c, and d, and that you would like the colors to vary from white at the beginning to red at the end. Fill in the film message below:

(define a ...)
(define b ...)
(define c ...)
(define d ...)
(define (adjFunc pos color) ...)

(tell camera
   (film


   )
)

Examples

• Mead Example: CrazyBallToss