private void TouchHandler() { Touch touch; //返回一个在触摸开始阶段时非触摸UI的触摸点 if (m_touchFingerId > -1) { touch = InputUtil.GetTouchWithFingerId(m_touchFingerId); m_touchFingerId = touch.fingerId; } else { touch = InputUtil.GetTouchNonPointerOverUI(TouchPhase.Began); m_touchFingerId = touch.fingerId; } if (touch.fingerId > -1) { if (GetPositionOnActiveArea(touch.position, advancedOptions.activeArea)) { float h = touch.deltaPosition.x * 0.5f; if (!m_isRotateBegin) { m_isRotateBegin = true; onPreRotateEvent?.Invoke(h); } Rotate(h); } } }