Apple AR Quick Look apparently only supports .usdz files. Is there a way to convert an .obj or .stl to .usdz?
I googled this first but the most popular result was to use a free tool called Vectary, but when I actually tried to use it, it wasn’t free.
With iOS 13 & Reality Kit, Apple has released a USDZ converter that does not require Xcode; the converter is a Python based tool. I have been using it the last few days to convert various files gltf, obj files.
Download link:
https://developer.apple.com/download/more/?=USDPython
Example usage:
usdzconvert someobject.obj
You will want to edit paths for your environment variables.
Or double click the file which is in the top level of the folder:
USD.command
to launch a shell with the environment variables set.
And within Xcode 11, you can export SCN files to USDZ files.
It is well worth watching the WWDC 2019 video; it is just over 30 minutes: