CSC151 2009F, Class 25: Pause for Breath

Admin:
* Since there's a quiz, should I call people?
* We may have prospectives in class today.
* There is no additional reading for Monday.  
  You may find it useful to reread today's reading.
* Assignment 5 returned
* After the quiz  ... 
  * We'll spend a little time going over assignment 5.  
  * We'll spend some time on the reading.  
  * If you finish the quiz early, feel free to review the reading and 
    come up with questions.
* We'll spend a few minutes matching up partners for assignment 6.  
  * If you've noted that your partner seems much better at this 
    stuff than you, you may want to find a new partner for this 
    assignment.  
    (You'll probably learn better with a similarly-skilled partner.)
* Are there questions on assignment 6?  I'll do my best to explain 
  what's happening at higher numbers of sides.

Overview:
* Pre-quiz Questions
* Quiz
* Notes on Assignment 6
* Notes on Assignment 5

Notes on Assignment 6:
* Why do we get cool pictures at high multipliers?
* Because we're working at the pixel level, so we get discrete changes
  in the angle that, when multiplied, become significant.
* Consider 256 'petals' and the 3x3 grid of points starting at (100,1)
* We'll assume that a positive sine value means 'draw white' and a negative
  one means 'draw black' (life is a bit more subtle, but ...)
  * angle to (100,1) = 
  * angle to (101,1) =
  * angle to (102,1) =
  * angle to (100,2) =
  * angle to (101,2) =
  * angle to (102,2) =