googly-eyes/googly.html at main · deanp70/googly-eyes · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>Document</title>
  <style media="screen">
    @import url("https://fonts.googleapis.com/css2?family=Bebas+Neue&display=swap");
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      display: flex;
      justify-content: center;
      align-items: center;
      min-height: 100vh;
      font-family: "Bebas Neue", cursive;
    }
    .container {
      position: absolute;
      bottom: 10px;
      right: 10px;
      display: flex;
    }
    .container .eyes {
      position: relative;
      width: 50px;
      height: 50px;
      display: block;
      background-color: #fff;
      margin: 0 10px;
      border-radius: 50%;
      border: 5px solid black
    }
    .container .eyes::before {
      content: "";
      top: 50%;
      left: 25px;
      transform: translate(-50%, -50%);
      width: 20px;
      height: 20px;
      border-radius: 50%;
      background: #000;
      position: absolute;
      border: 4px solid lightgreen;
      box-sizing: border-box;
    }
  </style>
</head>
<body>
  <div class="container">
    <div class="eyes"></div>
    <div class="eyes"></div>
  </div>

  <script type="text/javascript">
    document.querySelector("body").addEventListener("mousemove", eyeball);

    function eyeball() {
      const eye = document.querySelectorAll(".eyes");
      eye.forEach(function (eye) {
        console.log(eye.getBoundingClientRect().left)
        let x = eye.getBoundingClientRect().left + eye.clientWidth / 2;
        let y = eye.getBoundingClientRect().top + eye.clientHeight / 2;

        let radian = Math.atan2(event.pageX - x, event.pageY - y);
        let rotate = radian * (180 / Math.PI) * -1 + 90;
        eye.style.transform = "rotate(" + rotate + "deg)";
      });
    }
  </script>
</body>