HeadTracking Rotation does not match

[Jeff]

What tracking system are you using? The following code will do a right-to-left conversion:

#Negate Z value of position 
headTracker.swapPos([1,2,-3]) 

#Negate X,Y value of quaternion 
headTracker.swapQuat([-1,-2,3,4])

[ChrisMa]

Hi Jeff,

Vicon Tracker.

[ChrisMa]

I really don't understand it. After two ours of trying I found this as a working solution.

#Negate Z value of position 
head.swapPos([-1,3,-2]) 

#Negate X,Y value of quaternion 
head.swapQuat([-1,-3,-2,4])

The Z Value of the Head Target is pointing to the sky, the y-axis in viewwing direction and the x Axis to the right side of the user.


I would really appreciate if you could give me some Input on the swapQuat funkction.

Thanks!