Unity UI随鼠标移动

public class MouseControl : MonoBehaviour,IDragHandler
{
    public Canvas canvas;
    RectTransform rc;
    void Start()
    {
        rc = GetComponent<RectTransform>();
    }

    public void OnDrag(PointerEventData eventData)
    {
        rc.anchoredPosition += new Vector2(eventData.delta.x, eventData.delta.y) / canvas.scaleFactor;
    }
}