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) =