float hydraZOffset = vrSettings.getPosTrackHydraOffsetZ();
// The configured offset is for a 0,0,0 rotation head. Apply current head orientation to get final offset
Vec3 correctionToCentreEyePosition = Vec3.createVectorHelper(hydraXOffset, hydraYOffset, hydraZOffset);
correctionToCentreEyePosition.rotateAroundZ(rollHeadDegrees*PIOVER180);
correctionToCentreEyePosition.rotateAroundX(pitchHeadDegrees*PIOVER180);
correctionToCentreEyePosition.rotateAroundY(-yawHeadDegrees*PIOVER180);
//Add the hydra position (in head tracker reference frame) to the camera offset
//to get the camera position in head tracker reference frame