title: RealityKit – Plane Detection
body: <p>In RealityKit, similiar to ARKit, objects won't show until the camera has detected some sort of flat surface. Once the camera has detected that surface, the objects will show and pin to it. </p>
  
  <p>How do I know (by code) if the camera has detected a flat surface? Actually, I want to highlight the selectable area but I'm not sure if RealityKit actually allows you to do so, I know SceneKit does tho.</p>