Support for IIIF image choice

[azaroth42]

Viewer displays no content when an image choice is present in the manifest. For example, the first canvas in: http://dlss-dev-azaroth.stanford.edu/prezi/m804/manifest.json

Should at least pick the default image, even if it doesn't display the ability to swap images.

[tomcrane]

And another example from Yale for testing:

http://manifests.ydc2.yale.edu/manifest/Osbornfa1Multispectral

[tomcrane]

The BL have a use case for side by side comparison of image annotations on the same canvas, as well as the "stack" approach.

http://britishlibrary.typepad.co.uk/collectioncare/2016/01/fugitive-figure-in-leonardo-da-vinci-notebook-revealed.html

[edsilv]

drop down listing each image and an 'all' option, which shows all images as a grid.

[tomcrane]

UIs to think about for image choice

• pick choice from list for 1-up
• view all available in collection on same canvas (as comment above)
• pick 2 at once and blend between them http://merovingio.c2rmf.cnrs.fr/iipimage/iipmooviewer-git/multispectral.html
• pick 2 at once and "swipe" (like http://zurb.com/playground/twentytwenty)
• pick more than 2?

[tomcrane]

Also https://bl.ocks.org/mejackreed/80c4248278517475a30190b427cb5c9c

[tomcrane]

Some more background:

https://www.youtube.com/watch?v=4AJPVktQ1Zw

Files used:

http://iiif.io/api/presentation/2.1/#choice-of-alternative-resources https://tomcrane.github.io/scratch/manifests/foldout-as-choice.json (second canvas) https://tomcrane.github.io/scratch/manifests/john-dee.json (Elizabeth with choice of detail)

[LlGC-szw]

All issues will be triaged for further investigation or closure by the 28 September 2023. If your issue is still relevant and would like for it be investigated further please comment by 14 September 2023.