Transformation fine in landscape mode but broken in portrait mode.

[felixniemeyer]

Hi there,

when trying out this demo on my phone, I get a good looking result as long as I keep my phone in landscape orientation.
When I switch to or start with portrait orientation I get a broken transformation.
Setting the orientation to "portrait" in the artoolkit initializer results in a different transformation but still broken.

Here is a screenrecording that shows it: https://youtu.be/vrRqp7zgI8g