genuary4 - intersections of breath

let n, n2;
function setup() {
  cnv = createCanvas(500, 500);
  background(255);
  noStroke();
  fill(0, 0, 0, 50);
  n = 19;
  n2 = 20;
  angleMode(DEGREES);
}
function draw() {
  translate(width / 2, height / 2);
  background(255);
  t = frameCount / 2;
  fill(0, 0, 0, 5 + 20 * abs(sin(t / 30)));
  for (let i = 0; i < n2; i++) {
    dance(
      10 + i * 10 + 30 * sin(t / 2 + i),
      i * 5 + (1000 / n) * abs(sin(t + i) * cos(t / 2 + i)),
      i * 137.5 * sin(t / 300) * cos(t / 400)
    );
  }
}

function dance(r, p, s) {
  for (let i = 0; i < n; i++) {
    a = (360 / n) * i + s;
    circle(r * cos(a), r * sin(a), p);
  }
}

function mousePressed() {
  if (n < 30) {
    n++;
  } else {
    n = 2;
  }
}