如何像Google Measure app一样使用sceneform SDK和ARCore获取特定对象的宽度和高度？

// 导入所需的类
import com.google.ar.core.HitResult;
import com.google.ar.core.Plane;
import com.google.ar.sceneform.ArSceneView;
import com.google.ar.sceneform.FrameTime;
import com.google.ar.sceneform.math.Vector3;
import com.google.ar.sceneform.ux.ArFragment;
import com.google.ar.sceneform.ux.TransformableNode;

// 在Activity或Fragment中的onCreate方法中初始化AR场景
ArFragment arFragment = (ArFragment) getSupportFragmentManager().findFragmentById(R.id.arFragment);
arFragment.getArSceneView().getScene().addOnUpdateListener(this::onUpdateFrame);

// 在onUpdateFrame方法中进行射线检测和计算宽度和高度
private void onUpdateFrame(FrameTime frameTime) {
    ArSceneView arSceneView = arFragment.getArSceneView();
    if (arSceneView == null) {
        return;
    }

    // 获取屏幕中心点的位置
    DisplayMetrics displayMetrics = new DisplayMetrics();
    getWindowManager().getDefaultDisplay().getMetrics(displayMetrics);
    int screenWidth = displayMetrics.widthPixels;
    int screenHeight = displayMetrics.heightPixels;
    float screenCenterX = screenWidth / 2.0f;
    float screenCenterY = screenHeight / 2.0f;

    // 进行射线检测
    List<HitResult> hitResults = arSceneView.getArFrame().hitTest(screenCenterX, screenCenterY);
    for (HitResult hitResult : hitResults) {
        // 判断是否与平面相交
        Trackable trackable = hitResult.getTrackable();
        if (trackable instanceof Plane && ((Plane) trackable).isPoseInPolygon(hitResult.getHitPose())) {
            // 创建一个可变的节点
            TransformableNode node = new TransformableNode(arFragment.getTransformationSystem());
            node.setParent(arSceneView.getScene());
            node.setRenderable(your3DModelRenderable);
            node.setWorldPosition(hitResult.getHitPose().getTranslation());

            // 获取节点的尺寸信息
            Vector3 size = node.getLocalScale();
            float width = size.x;
            float height = size.y;

            // 在屏幕上显示宽度和高度
            TextView widthTextView = findViewById(R.id.widthTextView);
            TextView heightTextView = findViewById(R.id.heightTextView);
            widthTextView.setText("宽度：" + width);
            heightTextView.setText("高度：" + height);

            break;
        }
    }
}