CSC151.02 2016S, Class 41: Project Kickoff ========================================== _Overview_ * Preliminaries. * Admin. * Upcoming Work. * Extra Credit. * Questions. * About the project, revisited. * Group composition. * Time to form groups. * Playing and brainstorming. Preliminaries ------------- ### Admin * New partners. * I will continue to bring you food (or food-like substances) until I am caught up on grading. (You may be getting food until you graduate from Grinnell.) * I will need to leave promptly at 3:50 for a faculty meeting. ### Reminders * Office hours this week * See http://rebelsky.youcanbook.me. * Ask me about other available times. * Tutor hours * Sunday, 3-5 p.m. * Sunday-Thursday, 7-10 p.m. * Review Sessions * Wednesday at 8pm in CS commons with Zachary * Thursday at noon with SamR * Thursday at 8pm in CS commons with Alex * None with Sam this week ### Upcoming Work: * Reading for Tuesday * Reading: [Binary Trees](../readings/binary-trees-reading.html) * No Lab Writeup! * HW Due Tuesday night! ### Extra Credit * Send your reports to with subject "CSC 151 Extra Credit". (Do not include the quotation marks.) * Send opportunities to me before class with subject "CSC 151 EXTRA CREDIT OPPORTUNITY!" #### Academic / Artistic * Any of the fora on the report from the Residential Learning Task Force. (Formal announcement and times forthcoming.) * "The Politics of Naming and Shaming: Human Rights Organizations and Reporting", Tuesday, April 19, 4pm ARH 102 * Build Your Own University, Wednesday, April 20, 1-3pm, Masons Building * Math/Stats Student Seminar, Eliz Eason and Jun Take Lee: Cascades and Multifractals - noon, Thursday, April 21 * Classics Seminar with Really Cool Alum, April 21, JRC 101, 4:15 pm * Presentation, Statistical Modeling in Genome-Wide Association Studies: Identifying Disease-associated Genes Using Gene Pathways", Thursday, April 21, 4:15 p.m., ARH 102 * Sharon Day, Environment and more, Friday at 7 pm (more details forthcoming) * Scholars' Convocation: Dutch Global Horizons, Thursday, April 28, 11 am, JRC 101 * Damon Williams: Bigger Than The Cops, April 28, 4pm or 5:15 pm #### Peer * Lords of the Flies, 7:30 pm April 22nd, 2:00 pm April 23rd, 2:00 9pm April 24th. (Only 50-60 tickets per show) * Second Annual Contra into Spring Dance, April 22nd, Main Quad, 7:30 p.m. Free sticky food! * R&B Soul in Herrick at 7pm * Drag, Saturday. Bring money to give to the performers to give to charity. #### Regular Peer * Social Dance Workshop Tuesdays 7:00-8:00 in Bucksbaum Dance Studio * Post-break ExCo on British Politics Wednesdays at 8:00 in JRC 203. Just show up; you don't need to sign up. * Pun club Saturdays at 4pm in Younker * Electronic Potpourri on KDIC Fridays at Five * Space Odyssey KDIC Fridays at Six * Bollywood, Fridays, 7:30-8:30, Younker * Effective Altruism club, 2:30-3:30 Sundays in JRC 226. #### Misc #### Not so Far in the Future * Adaptation of Rushdie's East West. May 5 and 6. * May 6: 24 hours of Improv. (Show up for 30 minutes for EC; CB needs to go to all 24 hours for EC.) * Is anyone in 25th Annual Putnam County Spelling Bee? ### Questions _Can we talk our way through number three._ > What is the problem? Draw a snowflake-like object. > Inputs: turtle, side-length, number-of-sides, depth > Depth: How many sizes of shapes to make > This is a recursive task. We made the side length smaller at every step. But we can also think about this as recursing over depth. > What's your base case? > One possible base case: 1 deep repeat sides times move forward by side length turn counter-clockwise by the approriate angle (90 degrees for a square) > Recursive case repeat side times move forward by side length RECURSE turn counter-clockwise by the appropriate angle > Problem: Let's try it. > Observation: It looks like we need to keep track of whether we are rotating clockwise or counter clockwise. The recursive call is in the opposite direction. > Suggestion: Helper (local) that keeps track of level, side length, and clockwise/counter-clockwise. _Do we really need both iteration (`repeat`) and recursion to solve this?_ > It works best that way. _Is 1 really the best base case?_ > No. Use 0 as the base case. Do nothing in that case. (cond [(zero? depth)] [else (repeat ... ...)]) About the project, revisited ---------------------------- * Make a program that makes 1000 "interesting" images * Sam recommends that you think about this as an opportunity to explore an existing non-representational image in depth * Make sure to use multiple techniques * That scales appropraitely (without using image-scale, except if you start with "source images") Group composition ----------------- What skills will you need in your team? * Well, like you're going to need those programming skills. Coder. YELLOW. * Someone less shallow than the typical programmer, so that the images have some meaning/interesting to them. Artist. PURPLE. * Manager. Someone to keep the artist and coder focused on the requirements of the project. Also requires organizational skills. GREEN. * Devil's Advocate. Someone to break the project, because you know that Sam will try. RED Also need skills as a whole * Nice people, who are patient with each other. (Done. You are all Grinnellians.) * Ability to align schedules. (Failed. You are all Grinnellians.) Time to form groups ------------------- Playing and brainstorming -------------------------