SketchBook

var diameter;

function setup() {
createCanvas(windowWidth,
windowHeight);

diameter = 150;
noStroke();
 fill(200, 200, 20,30);
}

function draw() {
 background(0, 100, 255,);
translate(width / 2, height / 2);
for (var i = 0; i < TWO_PI; i += 0.1) {
var x = diameter * cos(i);
var y = diameter * sin(i);

ellipse (x, y, 180);
}
}