RaycastHit

RaycastHit是一个存储射线碰撞到的第一个物体的信息的类。在使用射线进行物理碰撞检测时，可以通过创建RaycastHit对象来存储碰撞物体的相关信息。这个类包含了被射线击中的物体、碰撞点、碰撞法线等信息。当调用Physics.Raycast方法时，可以将RaycastHit对象作为参数传递进去，用于存储射线碰撞的结果。如果射线碰撞到了物体，返回值为true，否则返回false。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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