PDF Spec vs Acrobat creation (QuadPoints)

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I’ve written a PDF annotation lib for iOS and found the same against-the-spec Acrobat behavior.

As a bit of further info, the Text Markup annotation also contains an Rect entry as well as the QuadPoints entry. The Rect entry is per the spec, [llx, lly, urx, ury]. So in Acrobat generated Text Markup annotations, the Rect point (llx,lly) is approx the same as the QuadPoints point (x3, y3) when rotation=0. Go figure.

Interesting the amount of time that can be wasted when the primary company behind a spec writes software that doesn’t follow that spec!

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