他们必须放慢速度到每小时19英里左右,万一发生碰撞事故,人员死亡率低于5%。
So the problems to address are recognition and collision, with the use case being combining multiple documents.因此,我们要解决的问题是识别和冲突,以及结合多种文档的用例。
The second parameter is the scene node, which is the object, which is affected by collision detection, in our case it is the camera.第二个参数是场景结点,指定受碰撞检测影响的对象,在我们的例子中就是相机。