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var radius = 0;
var angle = 0;
var lastX, lastY;
function setup() {
createCanvas(windowWidth, windowHeight);
background(100);
noFill();
stroke(255);
strokeWeight(0.2);
smooth(8);
rectMode(CENTER);
}
function draw() {
translate(width/2,height/2);
rotate(radians(angle));
rect(0,0,100 + (angle),100 + (angle));
angle++;
}