Vector3. gameObject ()没有完全移动gameObject

Question

当我将gameObject拖到屏幕边框之外时，它会返回到场景的中心，但它在gameObject的中间穿过边框进入屏幕后就停止移动了。

这个屏幕截图显示了gameObject在被停止后，移动到场景的中心。

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我的错误在哪里？我如何使卡片完全移动到场景的中心？

[SerializeField] private Canvas canvas;
Vector3 offset = Vector3.zero;

[SerializeField] private GameObject cardChoice;
private CanvasGroup cardChoiceCG;

private int resolutionX = Screen.width;
private int resolutionY = Screen.height;

[SerializeField] private float distanceToFadeIn;

[SerializeField] private float smoothTime = 0.25f;
private Vector3 velocity = Vector3.zero;


private void Start() {

    cardChoiceCG = cardChoice.GetComponent<CanvasGroup>();
}


private void Update() {

    Vector3 screenPosition = canvas.worldCamera.WorldToScreenPoint(this.transform.position);

    if (screenPosition.x > resolutionX || screenPosition.x < 0f || 
        screenPosition.y > resolutionY || screenPosition.y < 0f) {

        transform.position = Vector3.SmoothDamp(transform.position, canvas.transform.TransformPoint(Vector3.zero), ref velocity, smoothTime);
    }

    cardChoiceCG.alpha = Math.Abs((1f / distanceToFadeIn) * (screenPosition.x - (resolutionX / 2)));
}

public void OnPointerDown(PointerEventData eventData) {

    RectTransformUtility.ScreenPointToLocalPointInRectangle(canvas.transform as RectTransform, eventData.position, canvas.worldCamera, out Vector2 pos);
    offset = transform.position - canvas.transform.TransformPoint(pos);
}


public void OnDrag(PointerEventData eventData) {

    RectTransformUtility.ScreenPointToLocalPointInRectangle(canvas.transform as RectTransform, eventData.position, canvas.worldCamera, out Vector2 movePos);
    transform.position = canvas.transform.TransformPoint(movePos) + offset;
}

}

Answer 1

解决了！transform.position = Vector3.SmoothDamp(transform.position, canvas.transform.TransformPoint(Vector3.zero), ref velocity, smoothTime);在if语句中，所以它只能在卡的中心离开屏幕时工作。