TOPIC:

It would be better if the user could zoom on curl view and not lose that functionality on this view.

+1 For the zoom feature in the PDFViewCurl class.

Plus for dual page rendering on landscape orientation: please make the effect in a way that the right page curls around the center over the left page. Now both the right and left page curl together out of the screen to the left. That is not a very accurate simulation of turning pages.

Plus make it a little bit more smooth and maybe render the backside of the page curl not just beige but with content.