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function setup() {
createCanvas(windowWidth, windowHeight);
background(255);
}
function draw() {
background(255, 0, 0, 5);
noFill();
stroke(0);
ellipse(width/4, height/2, noise( millis() )*height, noise( millis() )*height);
r = random(height);
ellipse(3*width/4, height/2, r, r);
}