App-specific requirements
How we deal with these errors and their possible causes is highly dependent on your specific use case. Sometimes your app needs spatial mapping, sometimes it does not. It all depends.
If your app does not require spatial mapping at all, then life is easy. Just do not use this and do not read on. This could be the case if all you do is materialize objects in front of the user that she can interact with. However, even in this bare-bones scenario, it might be worthwhile to make sure the objects that are being instantiated are reachable. Let us assume we have created a simple sphere one meter away from the user. What happens if the user is about 50 centimeters away from a wall? Do we place the sphere inside the wall? ...
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