MonoBehaviour.OnBecameInvisible()

Description

Called when the renderer is no longer visible to any camera.

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.

The Scene view camera in the Unity Editor is treated like a regular camera for visibility checks, so OnBecameInvisible can be called when objects are visible in the Scene view, even if the application isn't running. Scripts that execute in Edit mode can check Application.isPlaying before running important logic in OnBecameInvisible to avoid unintended behavior in the Editor.

OnBecameInvisible can be a coroutine.

// Disables the behaviour when it is invisible

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour
{
    void OnBecameInvisible()
    {
        enabled = false;
    }
}