title: How to best use a scene graph when either rasterizing or ray-tracing?
body: <p>So this was a question on my Computer Graphics final to which I still don't know an answer.</p>
  
  <blockquote>
    <p>What is a scene-graph? How is it best used when rasterising or ray-tracing an image respectively?</p>
  </blockquote>
  
  <p>A scene-graph is a way to manage hierarchical transformations.
  However I do not know whether it makes a difference if you generate an image by rasterizing or by ray-tracing it.</p>
  
  <p>Hoping somebody can enlighten me.</p>