Tom Crane

(very) unlike 2D, would we say that IIIF Scenes have a default phys dim of 1m per unit?

In the 99% case of a single model targeting the whole Scene, where that Scene has no phys dim service declared but the model being painted might have scale information,...

Consensus from DC meeting - a Scene does **not** have a default physical dimensions service of 1m-1 unit. But ability to assert a phys dim service is very important.

Updated example with rotation: The third annotation has no `lookAt` but has a position and a rotation. In this case, what is being rotated - where did it start? ```json...

Discussion: Camera(s) are optional. Where will the viewer put the camera if you don't provide one? What is the initial state of a camera placed in the scene? What do...

Mixing in `t`: the advantage is that: ``` "target": { "type": "SpecificResource", "source": [ { "id": "https://example.org/iiif/scene1", "type": "Scene" } ], "selector": [ { "type": "PointSelector", "x": -1.0, "y": 0.0,...

PointSelector becomes: ``` { "type": "PointSelector", "x": -1.0, "y": 0.0, "z": 0.0, "instant": 37.3 } ``` So: ``` "target": "https://example.org/iiif/scene1#xyz=-1.0,0.0,0.0&t=45,90" ``` ...means the spatial point -1,0,0 between 45s and 90s...

Related to https://github.com/IIIF/cookbook-recipes/issues/23 and https://github.com/IIIF/iiif-stories/issues/101

:+1: to transfer

Suggest that this issue should be split - the original issue likely deferred, and a new issue created for targeting specific 3D regions of a scene.