@Override
    public Vector3f getHMDVectorPoseLeftEye() {
        if( hmdPoseLeftEyeVec == null ) {
            hmdPoseLeftEyeVec = getHMDMatrixPoseLeftEye().toTranslationVector();
            // set default IPD if none or broken
            if( hmdPoseLeftEyeVec.x <= 0.080f * -0.5f || hmdPoseLeftEyeVec.x >= 0.040f * -0.5f ) {
                hmdPoseLeftEyeVec.x = 0.065f * -0.5f;
            }
            if( flipEyes == false ) hmdPoseLeftEyeVec.x *= -1f; // it seems these need flipping
        }
        return hmdPoseLeftEyeVec;
    }
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