public Vector3 m_camRotator;
m_camRotator = Camera.transform.eulerAngles;//得到摄像机欧拉角
float x = Input.GetAxis("Mouse Y");//角度对应旋转Y轴旋转X角度
float y = Input.GetAxis("Mouse X");//角度对应旋转X轴旋转Y角度
Vector3 vecMouse = new Vector3(-x, y, 0.0f);
m_camRotate += vecMouse;
Camera.transform.eulerAngles = m_camRotateAngles;