@Override
    public Vector3f getSeatedToAbsolutePosition() {
        if( environment.isSeatedExperience() == false ) return Vector3f.ZERO;
        if( hmdSeatToStand == null ) {
            hmdSeatToStand = new Vector3f();

            HmdMatrix34 mat = HmdMatrix34.create();
            VRSystem.VRSystem_GetSeatedZeroPoseToStandingAbsoluteTrackingPose(mat);
            Matrix4f tempMatrix = new Matrix4f();
            convertSteamVRMatrix3ToMatrix4f(mat, tempMatrix);
            tempMatrix.toTranslationVector(hmdSeatToStand);
        }
        return hmdSeatToStand;
    }
Initialize the headset camera.
@param allowed <code>true</code> is the use of the headset camera is allowed and <code>false</code> otherwise.
@return token for camera
jme3-vr/src/main/java/com/jme3/input/vr/lwjgl_openvr/LWJGLOpenVR.java