let h2ci = 0.5 // forehead to pain source relative intensity

let ep = 4 // eyes pressure (0-10)

​

function setup() {

  createCanvas(400, 400);

  t = 0

  bi = i/2

  hi = bi * h2ci

}

​

function draw() {

  // time passing

  t += 0.025

  background(255)

  // tension-pressure in the center

  fill(0)

  ellipse(200+random(-bi,bi), 200+random(-bi,bi), 

          50+random(-bi,bi), 50+random(-bi,bi))

​

  const s = log(1 + max(2, ep / 2 * t))

  // eye is y = 0.1 * pow(x, 2)

  noFill();

  stroke(0);

  strokeWeight(5);

  beginShape();

  for (let x = -60; x < 61; x ++) {

    const es = (pow(59, 2) - pow(x, 2)) * s / 100

    curveVertex(100 - x, 200 - 0.001 * pow(x, 2) + min(es, 150))

  }

  endShape();

  beginShape();

  for (let x = -60; x < 61; x ++) {

    const es = (pow(59, 2) - pow(x, 2)) * s / 100

    curveVertex(300 - x, 200 - 0.001 * pow(x, 2) + min(es, 150))

  }

  endShape();

​

  // forehead

  noStroke()

  fill(200)

  ellipse(200, 135, 

          min(50 * s, 300) + random(-hi,hi), 

          min(20 * s, 80) + random(-hi,hi))

​

}

​

function keyPressed() {

  // this will download the first 5 seconds of the animation!

  if (key === 's') {

    saveGif('S2.gif', 10);

  }

}