title: Scene graph for 2D engine
body: <p>For my experimental 2D engine, I want to include a scene graph implementation to, with good performance, <strong>determine which objects have to be rendered</strong> (are visible for the camera).</p>
  
  <p>Unfortunately, I don't know much about the further details on how that would work. A scene graph, as far as I know, is at its core a tree-based structure which can be used to organize child-parent relationships better.</p>
  
  <ul>
  <li>How should one implement a 2D scene graph when aiming for the determination of what should be rendered in a single frame?</li>
  </ul>