Inherited By: VisibilityEnabler
Detects approximately when the node is visible on screen.
The VisibilityNotifier detects when it is visible on the screen. It also notifies when its bounding rectangle enters or exits the screen or a Camera's view.
If you want nodes to be disabled automatically when they exit the screen, use VisibilityEnabler instead.
Note: VisibilityNotifier uses an approximate heuristic for performance reasons. It doesn't take walls and other occlusion into account (unless you are using Portals). The heuristic is an implementation detail and may change in future versions. If you need precise visibility checking, use another method such as adding an Area node as a child of a Camera node and/or Vector3.dot.
camera_entered ( Camera camera )
Emitted when the VisibilityNotifier enters a Camera's view.
camera_exited ( Camera camera )
Emitted when the VisibilityNotifier exits a Camera's view.
screen_entered ( )
Emitted when the VisibilityNotifier enters the screen.
screen_exited ( )
Emitted when the VisibilityNotifier exits the screen.
The VisibilityNotifier's bounding box.
bool is_on_screen ( ) const
true, the bounding box is on the screen.
Note: It takes one frame for the node's visibility to be assessed once added to the scene tree, so this method will return
false right after it is instantiated, even if it will be on screen in the draw pass.