MITxPro/warmerEyes.html at main · powerlesbian/MITxPro · GitHub

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<!doctype html>

<html lang="en">
<head>
  <meta charset="utf-8">

  <title>Eyes that watch you</title>
</head>
  <style>
    body {
      margin: 0;
      padding: 0;
      background: palevioletred;
    }

    .eyes {
      position: absolute;
      top: 50%;
      transform: translateY(-50%);
      width: 100%;
      text-align: center;
    }
    .eye {
      width: 240px;
      height: 120px;
      background: #fff;
      display: inline-block;
      margin: 40px;
      border-radius: 50%;
      position: relative;
      overflow: hidden;
    }
    .ball {
      width: 80px;
      height: 80px;
      background: #000;
      position: absolute;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      border-radius: 50%;
    }

  </style>

  <body>
    <div class="eyes">
      <div class="eye">
        <div class="ball"></div>
      </div>
      <div class="eye">
        <div class="ball"></div>

      </div>
    </div>

    <p>Woooooo.... this is spooky, also quite useful, and sometimes reassuring.
        Call me.  Maybe.
      </p>
  </body>
  <script>
    var balls = document.getElementsByClassName("ball");
    document.onmousemove = () => {
      var x = (event.clientX * 100) / window.innerWidth + "%";
      var y = (event.clientY * 100) / window.innerHeight + "%";

      for (let i = 0; i < 2; i++) {
        balls[i].style.left = x;
        balls[i].style.top = y;
        balls[i].transfoorm = "translate(-" + x + ",-" + y + ")";
      }
    };
  </script>
</html>