I am currently an intern trying to develop an app that should display 3D geometries (points, lines and polygons) in world-scale augmented reality. Our goal is to have an app that works similarly to AuGeo but that it displays lines and polygons as well. Aside from https://developers.arcgis.com/android/latest/guide/display-scenes-in-augmented-reality.htm and some scattered demos I have not been able to find more in depth documentation on ARView and how to display data using this capability. I have relied heavily on the ESRI sample "Navigate in AR" for reference (https://developers.arcgis.com/android/latest/java/sample-code/navigate-in-ar/ ).
So far I have been able to display feature layers showing a single geometry type and have failed to display multiple geometries. Likewise, I have been able to display 2D polygons saved in a web scene but no 3D nor multiple 2D features in a web scene (using the Display a web scene tutorial https://developers.arcgis.com/labs/android/display-a-web-scene/). I have not tried overlays with graphics yet, though I am not sure if this is a good way to achieve this.
I was wondering if anyone has any advice of what could be a proper approach to display 3D data (hopefully multiple geometries) in world-scale AR.