createCanvas(400, 400);

}

let clk = 0, clk2 = 0;;

function draw() {

  background(220);

  drawCircle(width * 0.5, height * 0.5, 100, 25, clk);

  clk += 0.5;

  clk2 += noise(clk) * 0.5;

}

​

function drawCircle(x,y,r,n,clk) {

  const step = r/n;

  const rsq = r * r;

  for(let cx = 0; cx < r; cx += step) {

    let cy = sqrt(rsq - cx * cx);

    let ny = noise(clk + cx / r * 14 + n) * 50 * (1-cx/(step*n)) +

        pow((1 - (abs(mouseX - x - cx) / width)),4) * 25;

    stroke(lerpColor(color(100,100,100),color(255,255,0),ny/50));

    line(x + cx, y + cy + ny, x + cx, y - cy);

    ny = noise(clk -cx / r * 14 + n) * 50* (1-cx/(step*n))

     + pow((1 - (abs(mouseX - x + cx) / width)),4) * 25;

    stroke(lerpColor(color(100,100,100),color(255,255,0),ny/50));

    line(x - cx, y + cy + ny, x - cx, y - cy);

  }

}