@Override
    protected float[] get2DPosition() {
        if (isRootFlexView()) {
            float[] arr = {getPivotX(), getPivotY()};
            return arr;
        } else {
            return super.get2DPosition();
        }
    }
Override setGeometry because we don't want to always use the Materials set on a FlexView.
android/viro_bridge/src/main/java/com/viromedia/bridge/component/node/VRTFlexView.java