title: Trying to achieve auto navigation through the model or a walkthrough over the model in viewer3d
body: <p>I am trying to achieve same thing which is done in this <a href="https://youtu.be/ymXgE4wApj0" rel="nofollow noreferrer">Video</a>.
  need a implement a walk through which navigates through all the model in the rendered file.
  Could someone tell me how its been done or what is it called in autodesk language so that I can find
  it out on autodesk documentation and try to implement it.</p>
  <p>I read it somewhere where it says it need to be implemented while create the RVT file and then it needs to be rendered is it true ?</p>
  <p>A reference to sample or document would be a great help.</p>