Annotate displayed 3D models with commentary

[JulieWinchester]

As a Paleobiology Researcher

I want annotate a photogrammetry scan of a fossil excavation landscape

So that I can record and indicate the location and type of bones present in the scene

copy of IIIF/iiif-3d-stories#12

[JulieWinchester]

We have completed a label annotation demo project to demonstrate the feasibility of this user story, creating 5 demos using separate 3D viewers to load a single JSON manifest of labels annotated on a 3D model. See VIEWER_JSON_DEMOS.md, #17, and #25 for more details.

[JulieWinchester]

During the IIIF Annual Conference 2023 the week of June 5 2023, there was discussion of potential requirements and attributes for text-label annotation items:

• Types of annotation targets could include points (X/Y/Z), 2D areas, or 3D rectangular prisms
• Needs position property
• Could optionally have normal property
• Could optionally have some reference or relationship to a camera annotation (to reference camera with clear view of annotation)
• Attributes or properties of label text (such as a text offset) seem out of scope

[edsilv]

model-viewer example for reference: https://codesandbox.io/s/model-viewer-annotations-demo-3k5tqo