Display multiple 3D models that can be rotated and manipulated independently

[JulieWinchester]

As a citizen science coordinator

I want to provide citizen scientists with a comparative view of two 3D models, where each model can be placed, oriented, and scaled within its own respective 3D space

So that my project participants can compare and contrast two 3D models independently

Copy of IIIF/iiif-3d-stories#14

[vincentmarchetti]

An related example scene is at
http://www.kshell.com/pages/gemini/
This scene shows 2 human skull 3D models from an anthropology study. For this model the 2 models are ganged together so that manipulating one skulls orientation automatically turns the other in the same way, so that both skull are viewed simultaneously from the same relative viewpoint. This ganging together could be temporarily disconnected as well, under user control

[JulieWinchester]

During the Basel conference and working meeting on October 25 and 26, 2023, there was some discussion that this user story should be demoted from core. The reasoning is that if this story is interpreted as having two separate Scenes with a 3D model painting annotation in each Scene, then this functionality is already satisfied (see Mirador for the 2D version of this use case). If the story implies something to do with camera or annotation model orbit/interaction behavior, then potentially this should be made more explicit in this story or in another user story.

This should be discussed and more actively considered at a future 3D TSG meeting.