Constant ovr_sys::ovrTrackingOrigin_FloorLevel

pub const ovrTrackingOrigin_FloorLevel: ovrTrackingOrigin = 1;

Tracking system origin reported at floor height

Prefer using this origin when your application requires the physical floor height to match the virtual floor height, such as standing experiences. When used, all poses in ovrTrackingState are reported as an offset transform from the profile calibrated floor pose. Calling ovr_RecenterTrackingOrigin will recenter the X & Z axes as well as yaw, but the Y-axis (i.e. height) will continue to be reported using the floor height as the origin for all poses.