Many years ago I saw RoboHelp generate to PDF and support 3D content in that. I have no idea how it was done but I imagine it was a 3D HTM file. Logically the new UI versions, 2019 and 2020 should be even more capable as strict HTML5 and CSS3 is supported.
If you can create your content as an HTM file, I think but cannot confirm it should work.
Sorry but that's the extent of my knowledge on this matter.
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