Question regarding getEuler and it uses

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1) Thanks for your solution, it helped me achieve my goal as much as possible without eye tracking. I created a shape with vizshape (my objects are static and created in Sketchup so i had to create a shape in the vizard script) while using the position of the region of interest i want to know if people are looking at from the inspector, such that it reports me when people are looking at the 3D shape while using the pickRect.

2) I didn't understand how to correctly use your solution to achieve my second goal, which is to get the correlation between position and orientation. I read about the vizmat module but it seems that the methods relay on previous data such as points, positions, vectors and i don't have previous data that can help. I would appreciate if you can explain furthermore.
Thanks.