createCanvas(600, 600);

}

​

function draw() {

  background(220);

  translate(width/2, height/2);

  strokeWeight(2);

  randomSeed(0);

  var radius = 200;

  var nPoints = 60;

  beginShape();

  for (var i = 0; i < nPoints; i++) {

    var t = map(i, 0, nPoints, 0, TWO_PI);

    var randomR = radius + random(-6, 6);

    var px = randomR * cos(t);

    var py = randomR * sin(t);

    curveVertex(px, py);

  }

  endShape(CLOSE);

}