在Vuforia停泊

Question

生成对象后，我就可以固定它的位置。但是，在屏幕上的每次轻击时，对象都会放置在不同的位置。我想避免此问题，并希望在整个会话或应用程序生命周期中将我的对象固定在衍生位置。

这是我的Deploy Stage Once脚本：

public class DeployStageOnce : MonoBehaviour
{

    public GameObject AnchorStage;
    private PositionalDeviceTracker _deviceTracker;
    private GameObject _anchorGameObject;
    private GameObject _previousAnchor;

    public void Start()
    {
        if (AnchorStage == null)
        {
            Debug.Log("AnchorStage must be specified");
            return;
        }
        AnchorStage.SetActive(false);
    }
    public void Awake()
    {
        VuforiaARController.Instance.RegisterVuforiaStartedCallback(OnVuforiaStarted);
    }
    public void OnDestroy()
    {
        VuforiaARController.Instance.UnregisterVuforiaStartedCallback(OnVuforiaStarted);
    }
    private void OnVuforiaStarted()
    {
        _deviceTracker = TrackerManager.Instance.GetTracker<PositionalDeviceTracker>();
    }

    private void AnchorGameObjectSetHitTestPosition(HitTestResult reuslt)

    {

        _anchorGameObject.transform.position = reuslt.Position;

        _anchorGameObject.transform.rotation = reuslt.Rotation;

    }


    public void OnInteractiveHitTest(HitTestResult result)
    {
        if (result == null || AnchorStage == null)
        {
            Debug.LogWarning("Hit test is invalid or AnchorStage not set");
            return;
        }
        var anchor = _deviceTracker.CreatePlaneAnchor(Guid.NewGuid().ToString(), result);
        _anchorGameObject = new GameObject();
        AnchorGameObjectSetHitTestPosition(result);
        if (anchor != null)
        {

            AnchorStage.transform.parent = _anchorGameObject.transform;

            AnchorStage.transform.localPosition = Vector3.zero;

            AnchorStage.transform.localRotation = Quaternion.identity;

            AnchorStage.SetActive(true);

                    }
        if (_previousAnchor != null)
        {
            Destroy(_previousAnchor);
        }
        _previousAnchor = _anchorGameObject;
    }
}

Answer 1

好吧，您可以在脚本中创建一个isPlaced变量，以检查对象是否已经像这样放置：

private bool isPlaced = false;

    public void OnInteractiveHitTest(HitTestResult result)
    {
        if (result == null || AnchorStage == null)
        {
            Debug.LogWarning("Hit test is invalid or AnchorStage not set");
            return;
        }
        if(!isPlaced)
        { 
            var anchor = _deviceTracker.CreatePlaneAnchor(Guid.NewGuid().ToString(), result);
            _anchorGameObject = new GameObject();
            AnchorGameObjectSetHitTestPosition(result);
            if (anchor != null)
            {

                AnchorStage.transform.parent = _anchorGameObject.transform;

                AnchorStage.transform.localPosition = Vector3.zero;

                AnchorStage.transform.localRotation = Quaternion.identity;

                AnchorStage.SetActive(true);

            }           
            isPlaced = true;
        }
}