createCanvas(800, 800);

  background(220);

  x = 0;

  stroke(color(255, 0, 255));

  // beginShape();

}

​

let x;

function draw() {

  // beginShape();

  rotate(frameCount)

  let y = height / 2 + (5 + random(-5, 5)) * cos(frameCount);

  for (let _ = 0; _ < random(1,50); _++) {

    let off = random(-5,5);

    let off2 = random(-5,5);

    point(x+off,y+off2);

  }

  // vertex(x,y);

  x += PI/32;

  if (x > width) {

    x = 0;

    // endShape();

  }

}

​