Oh you thought I was done pushing this into the realm of absurdity? Nope! How about repurposing a page curl metal shader to emulate translucent vellum?
As an aside: can I just say how annoying it is to have a single surface that needs to move, rotate, curl and accept pencil input?
#PencilKit#LetterSet
A test sheet of letters in the LetterSet app now has two hit-testing circles that invoke a page curl.