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function setup() {
createCanvas(windowWidth, windowHeight);
background(255);
strokeWeight(1);
}
function draw() {
background(170);
strokeWeight(10);
for(let x=0 ; x<height; x=x+17){
fill(255,0,0,map(10,0,height,28,17))
circle(width/2+map(x,0,2*height/3,0,mouseX-width/2),height/2+map(x,0,2*height/3,0,mouseY-height/2),map(x,0,2*height/3,height-60,0));
}}