@Override
    public float getInterpupillaryDistance() {
        if( vrSystemFunctions == null ) return 0.065f;
        return vrSystemFunctions.GetFloatTrackedDeviceProperty.apply(JOpenVRLibrary.k_unTrackedDeviceIndex_Hmd, JOpenVRLibrary.ETrackedDeviceProperty.ETrackedDeviceProperty_Prop_UserIpdMeters_Float, hmdErrorStore);
    }
Initialize the headset camera.
@param allowed <code>true</code> is the use of the headset camera is allowed and <code>false</code> otherwise.
jme3-vr/src/main/java/com/jme3/input/vr/openvr/OpenVR.java