Invert the rotation from Vicon before returning.
Invert the rotation from Vicon before returning.

 o Basically, the rotations from the Vicon system are the
   inverse of what we expect. Translations are fine.

 o Previously, I was handling this in the application logic.

 o However, after adding support for the polhemus trackers, it
   is obvious that the problem is with the vicon code in libwcl,
   as the Polhemus trackers don't suffer from this problem.

 o Therefore, in an effort to make all trackers work the same,
   the inversion code has been moved from the application to the lib.

 o Makes sense to me! Note that we currently don't have access to the
   vicon system to verify this.

WearableComputerLab/LibWCL,WearableComputerLab/LibWCL,WearableComputerLab/LibWCL,WearableComputerLab/LibWCL