In some cases we need to show two sequences where one of the two sequences present some Canvases rotated.
For selecting a region of the Canvas in Ranges, Presentation API 3.0 suggest to use SpecificResources where source is the id of the Canvas :
{
"type": "SpecificResource",
"source": "https://example.org/iiif/book1/canvas/p2",
"selector": {
"type": "FragmentSelector",
"value": "xywh=0,0,750,300"
}
But how to mimic this behaviour for rotating a Canvas? We have a recipe for rotating images but in some cases we might want to rotate the whole Canvas, for instance when the Choices represent variation of the same page (e.g. multispectral imaging) in this case the same rotation should be applied to the whole image stack.