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threejs_exercise
/
00-test.html

<!DOCTYPE html>
<html lang="en">

<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>
    div {
      position: absolute;
      left: 600px;
      top: 300px;
      width: 50px;
      height: 50px;
      ;
      background-color: green;
    }
  </style>
</head>

<body>
  <div class="box"></div>

  <script>
    var r = 250;
    var x = r;
    var y = 0;
    var jiao = 0;
    setInterval(function () {

      jiao += 1;
      x = r * Math.cos(getHu(jiao));
      y = r * Math.sin(getHu(jiao));
      console.log(x, y);


      document.querySelector('.box').style.transform = 'translate(' + x + 'px, ' + y + 'px)';

    }, 10);


    function getHu(jiao) {
      //  hu/pi = 焦/180
      hu = jiao / 180 * Math.PI;
      return hu;
    }
  </script>
</body>

</html>