Visibility Changed delegate?

[Maxii]

I'm looking for a way to be notified when a widget or panel transitions into/outof camera line of sight like MeshRenderer.OnBecameVisible/Invisible does for meshes. As UISprite doesn't use a MeshRenderer, I don't have that notification available to me.

[ArenMook]

UIWidget.isVisible tells you whether it's visible, but there is no delegate for this. You have to watch for it changing.

[Maxii]

Would you consider a feature request then?

[ArenMook]

It seems like this would add overhead to every single widget, even though in 99.9% of the use cases this isn't going to be used. I'd say this is best as an additional script attached to whatever you want to be tracking this kind of thing.

[Maxii]

Thanks for considering it. I take it you are referring to a script that polls isVisible during Update?

[ArenMook]

I'd put it in a coroutine, but yes.