See the questions and answer sheet.
Something came in the mail this week from the University of Canterbury in New Zealand. The Department of Computer Science and Software Engineering (who use COSC as a prefix for their computer science courses) just held their end-of-year awards ceremony, the COSCARs. I was honored with this Most Wholesome Lecturer award: How exactly I was […]
I learned recently of Chaikin’s Algorithm, a method for rounding off the corners of a polygon. The algorithm works like this: Find the midpoints of each line segment in the polygon’s perimeter. Connect each consecutive pair of midpoints using a quadratic Bezier curve. The midpoints are the curve’s endpoints. The vertex between them is the […]
Dear students, A primary benefit of object-oriented design is that it helps us organize our programs coherently. We can put code and the data that it regularly processes together into the same chunk. Objects allow for the separation of concerns. Class A can focus on its task, and be very good at it. It can […]
At one time, people believed that the Earth was the center of the universe, and that the planets and the sun orbited around it. Copernicus came along and challenged this idea, suggesting that the sun was the center. These are the only two sides of the debate that we ever hear about. Heliocentrism vs. geocentrism […]
There’s somebody on Twitter named Dave who makes animations that break your mind. I fell in love with a simple rotating one a couple of weeks ago and recreated it in Twoville: Several others have recreated it too, but they appear to have fallen for the same trap that I initially fell for. They enumerated […]
Dear students, Today we extend the networked chat application that we started writing last week. Beyond getting it functional, we’ll also give the client a graphical user interface (GUI). Java is one of the few languages that ships with a builtin windowing library. Dialogs If your program only prompts the user for simple input, like […]
Dear students, At the end of the semester, we have an opportunity to explore some new, crazy ideas. Next week we’ll have a look at graphical user interfaces. Today we’ll look at sockets and threads as we make a chat client. Sockets Computers got especially interesting when they gained the ability to talk to each […]
Welcome to lab 12! If you have checkpoints from the last lab to show your instructor or TA, do so immediately. No credit will be given if you have not already completed the work, nor will credit be given after the first 10 minutes of this lab. In this lab you will create a robot […]
Welcome to lab 12! If you have checkpoints from the last lab to show your instructor or TA, do so immediately. No credit will be given if you have not already completed the work, nor will credit be given after the first 10 minutes of this lab. In this lab you will create a robot […]