Continuous Beautiful Flower Type Movement Animation using JavaScript

<!DOCtype html>
<html>

<body>
  <script>
    // from https://snippet.zone

    const canvas = document.createElement('canvas'),
      c = canvas.getContext('2d');

    document.body.appendChild(canvas);
    document.body.style.margin = 0;

    function brush()
    {
      let pnts = [];
      let cx = innerWidth * Math.random(),
        cy = innerHeight * Math.random();
      let x = y = 0;
      let ro = innerWidth / (1 + Math.random() * 2);
      let oro = ro;
      let r2 = innerWidth / (2 + Math.random() * 2);
      let rx = innerWidth / 4;
      let ry = rx;

      ro = Math.min(300, ro);

      let t = 0;
      let vt = 0.05;
      let wt = 0.05;
      let fric = 0.99;
      let t2 = 0;
      let x2 = 0;
      let y2 = 0;
      let vx2 = 0;
      let vy2 = 0;
      let col = ['black', 'white'][Math.floor(Math.random() * 2)];
      let cc = 0; //[0, 255][Math.floor(Math.random() * 2)];
      let s = 0.05 + Math.random() * 0.25;

      function draw()
      {
        c.save();
        c.translate(cx, cy);
        c.scale(s, s);
        for (let i = 0; i < 50; i++)
        {
          if (Math.random() < 0.13)
          {
            vt += Math.random() * 0.1 - 0.05;
          }
          if (Math.random() < 0.13)
          {
            wt += Math.random() * 0.1 - 0.05;
          }
          vt *= 0.99;
          wt *= 0.98;
          rx += (vt + wt * r2 + ro - rx) / 12;
          ry += (vt + wt * r2 + ro - ry) / 12;

          if (Math.random() < 0.001)
          {
            ro += 100 * Math.sin(t2 / 5);
            if (Math.abs(ro) < 50) ro = 50;
          }
          t2 += 0.01;
          x = rx * Math.cos(t / 10) + y2;
          y = ry * Math.sin(t / 10) + x2;

          if (Math.random() < 0.01)
          {
            vx2 += Math.random() * 0.2 - 0.1;
          }
          if (Math.random() < 0.01)
          {
            vy2 += Math.random() * 0.2 - 0.1;
          }

          vx2 *= fric;
          vy2 *= fric;

          x2 += vx2;
          y2 += vy2;
          t += vt;

          c.fillStyle = col;
          c.fillRect(x, y, 4, 4);
          pnts.push([x, y]);

          if (Math.random() < 0.1)
          {
            const a = pnts[Math.floor(Math.random() * pnts.length)];
            const b = pnts[Math.floor(Math.random() * pnts.length)];
            c.strokeStyle = `rgba(${cc}, ${cc}, ${cc}, ${Math.random() / 2})`;
            c.beginPath();
            c.moveTo(a[0], a[1]);
            c.lineTo(b[0], b[1]);
            c.stroke();
          }
        }
        c.restore();
      }
      return draw;
    }

    const NUM = 20;
    let brushes = [];

    function resize()
    {
      canvas.width = innerWidth;
      canvas.height = innerHeight;
      c.fillStyle = 'gray';
      c.fillRect(0, 0, canvas.width, canvas.height);

      brushes = [];
      for (let i = 0; i < NUM; i++)
      {
        brushes.push(brush());
      }
    }
    addEventListener('resize', resize);
    resize();

    function loop()
    {
      c.globalAlpha = 1;
      c.fillStyle = 'rgba(155, 155, 155, 0.0018)';
      c.fillRect(0, 0, canvas.width, canvas.height);
      c.globalAlpha = 0.5;
      for (let i = 0; i < brushes.length; i++)
      {
        brushes[i]();
      }
      requestAnimationFrame(loop);
    }
    loop();
  </script>
</body>
<h1>
   <span>MADE BY DEVANSH MISHRA</span>
       </h1>
</html>

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