title: How to listen to camera's world position in A-Frame?
body: <p>How can I get the current position of a camera? Such that I can rotate my sky entity.</p>
  
  <p>Assume I have:</p>
  
  <pre><code>&lt;a-scene&gt;
    &lt;a-camera id="camera&gt;&lt;/a-camera&gt;
    &lt;a-sky id="mySky"&gt;&lt;/a-sky&gt;
  &lt;/a-scene&gt;
  </code></pre>