Vuforia锚定

Question

一旦物体产生，我就能确定它的位置。但是，在屏幕上的每个点击上，物体都被放置在不同的位置上。我希望避免这个问题，并希望在整个会话或应用程序生存期内将我的对象固定在生成的位置。

这是我的部署阶段(曾经的脚本)：

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

您可以在脚本中创建一个isPlaced变量，以检查您的对象是否已经放置如下：

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;
        }
}