godot/doc/classes/VisibleOnScreenNotifier3D.xml

<?xml version="1.0" encoding="UTF-8" ?>
<class name="VisibleOnScreenNotifier3D" inherits="VisualInstance3D" version="4.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../class.xsd">
	<brief_description>
		Detects approximately when the node is visible on screen.
	</brief_description>
	<description>
		The VisibleOnScreenNotifier3D detects when it is visible on the screen. It also notifies when its bounding rectangle enters or exits the screen or a [Camera3D]'s view.
		If you want nodes to be disabled automatically when they exit the screen, use [VisibleOnScreenEnabler3D] instead.
		[b]Note:[/b] VisibleOnScreenNotifier3D uses the render culling code to determine whether it's visible on screen, which also means that its [member Node3D.visible] must be [code]true[/code] to work correctly.
	</description>
	<tutorials>
	</tutorials>
	<methods>
		<method name="is_on_screen" qualifiers="const">
			<return type="bool" />
			<description>
				If [code]true[/code], the bounding box is on the screen.
				[b]Note:[/b] It takes one frame for the node's visibility to be assessed once added to the scene tree, so this method will return [code]false[/code] right after it is instantiated, even if it will be on screen in the draw pass.
			</description>
		</method>
	</methods>
	<members>
		<member name="aabb" type="AABB" setter="set_aabb" getter="get_aabb" default="AABB(-1, -1, -1, 2, 2, 2)">
			The VisibleOnScreenNotifier3D's bounding box.
		</member>
	</members>
	<signals>
		<signal name="screen_entered">
			<description>
				Emitted when the VisibleOnScreenNotifier3D enters the screen.
			</description>
		</signal>
		<signal name="screen_exited">
			<description>
				Emitted when the VisibleOnScreenNotifier3D exits the screen.
			</description>
		</signal>
	</signals>
</class>