Question

Description 描述

OnBecameVisible is called when the object became visible by any camera.
当该物体在任何摄像机中可见时调用OnBecameVisible。

This message is sent to all scripts attached to the renderer. OnBecameVisible and OnBecameInvisible are useful to avoid computations that are only necessary when the object is visible.
这个消息发送到附加到该渲染器的所有脚本。OnBecameVisible和OnBecameInvisible对避免计算非常有用的，只需要当物体可见时计算。

Note that object is considered visible when it needs to be rendered in the scene. It might not be actually visible by any camera, but still need to be rendered for shadows for example. Also, when running in the editor, the scene view cameras will also cause this function to be called.
注意，在场景中当需要渲染时该对象被认为是可见的。事实上它可能不被任何摄像机可见，但是依然需要去渲染阴影。当运行在编辑器，场景视图摄像机也将导致这个函数被调用。

See Also: OnBecameInvisible, isVisible.

renderer