CSE 5J Lecture Notes - Lecture 4: Ellipse, Floating Points, Pariah Dog
Document Summary
In processing, variables can hold different kinds of values and we are required to explicitly define the type of value before we can use a given variable. Int: a big number, -21474783648 to 2147483647 for advanced programs requiring mathematical precision): once a variable is declared, we can then assign it a value by setting it equal to something. In most cases, if we forget to initialize a variable, processing will give it a default value, such as 0 for integers, 0. 0 for floating points, and so on. // your basic setup void setup() { size(200,200); smooth(); } void draw() { // draw the background and the ellipse background(backgroundcolor); stroke(circlestroke); fill(circlefill); ellipse(circlex,circley,circlew,circleh); // change the values of all variables circlex = circlex + change; circley = circley + change; circlew = circlew + change; circleh = circleh - change; circlestroke = circlestroke - change; circlefill = circlefill + change;
