将该脚本挂载到父物体上

public class ShowModel : MonoBehaviour
    {
        public Transform rotateTransform;
        [Range(0.1f,1)]
        public float rotationalSpeed = 0.5f;

        private bool _isRotational;
        private Vector3 _startPosition;
        private Vector3 _startRotation;

        private void Update()
        {
            if (Input.GetMouseButton(0) && !_isRotational)
            {
                if (!HandleMouseClick()) {return;}
                _isRotational = true;
                _startPosition = Input.mousePosition;
                _startRotation = rotateTransform.eulerAngles;
            }

            if (Input.GetMouseButtonUp(0))
            {
                _isRotational = false;
                rotateTransform.DORotate(new Vector3(0,0,0),0.5f);
            }

            if (_isRotational)
            {
                var currentMouse = Input.mousePosition;
                var x = _startPosition.x - currentMouse.x;
                rotateTransform.eulerAngles = _startRotation + new Vector3(0, x * rotationalSpeed, 0);
            }
        }
        
        private bool HandleMouseClick()
        {
            // 在这里检查点击的位置是否在某个UI元素上
            // 使用射线检测来判断点击位置是否在UI上
            PointerEventData eventData = new PointerEventData(EventSystem.current);
            eventData.position = Input.mousePosition;
            List<RaycastResult> results = new List<RaycastResult>();
            EventSystem.current.RaycastAll(eventData, results);
            //换成自己UI对应的layer
            return results[0].gameObject.layer == 10;
        }
    }