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function setup() {
createCanvas(windowWidth, windowHeight);
background(0);
}
function draw() {
noFill();
stroke(355, 100, 200, 80 );
translate(width/2, height/2);
rotate(sin( millis()/100 ) *2);
translate(300, 0);
rectMode(CENTER);
rect(0, 0, 600, 600);
}