AR Kit World map scanning guidelines and expected max size.

Unity Engine
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1

Hi All,
I`m working on a project that will have multiple world maps in a building.
It works very well and quickly with small areas (small room) but it struggles when it comes to larger rooms.
Questions.

  1. What is the best advice on how to do best world map scans? scan all the walls? walk in circles? with old Google Tango AR you would walk in 1m squares and do a 360. I can`t seem to find any “best practice” on this.
  2. What size room I can reasonably expect to scan and track reliably?
2

A bit of advice from the team:

Wait until the worldMappingStatus reports Mapped before saving the world map.
https://docs.unity3d.com/Packages/com.unity.xr.arkit@4.1/api/UnityEngine.XR.ARKit.ARKitSessionSubsystem.html?q=worldmappingstatus#UnityEngine_XR_ARKit_ARKitSessionSubsystem_worldMappingStatus