/**
 * The VisibilityNotifier2D detects when it is visible on the screen. It also notifies when its bounding rectangle enters or exits the screen or a viewport.
 *
 * If you want nodes to be disabled automatically when they exit the screen, use [VisibilityEnabler2D] instead.
 *
 * **Note:** For performance reasons, VisibilityNotifier2D uses an approximate heuristic with precision determined by [member ProjectSettings.world/2d/cell_size]. If you need precise visibility checking, use another method such as adding an [Area2D] node as a child of a [Camera2D] node.
 *
*/
declare class VisibilityNotifier2D extends Node2D  {

  
/**
 * The VisibilityNotifier2D detects when it is visible on the screen. It also notifies when its bounding rectangle enters or exits the screen or a viewport.
 *
 * If you want nodes to be disabled automatically when they exit the screen, use [VisibilityEnabler2D] instead.
 *
 * **Note:** For performance reasons, VisibilityNotifier2D uses an approximate heuristic with precision determined by [member ProjectSettings.world/2d/cell_size]. If you need precise visibility checking, use another method such as adding an [Area2D] node as a child of a [Camera2D] node.
 *
*/
  new(): VisibilityNotifier2D; 
  static "new"(): VisibilityNotifier2D 


/** The VisibilityNotifier2D's bounding rectangle. */
rect: Rect2;

/**
 * If `true`, the bounding rectangle 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.
 *
*/
is_on_screen(): boolean;

  connect<T extends SignalsOf<VisibilityNotifier2D>>(signal: T, method: SignalFunction<VisibilityNotifier2D[T]>): number;





/**
 * Emitted when the VisibilityNotifier2D enters the screen.
 *
*/
$screen_entered: Signal<() => void>

/**
 * Emitted when the VisibilityNotifier2D exits the screen.
 *
*/
$screen_exited: Signal<() => void>

/**
 * Emitted when the VisibilityNotifier2D enters a [Viewport]'s view.
 *
*/
$viewport_entered: Signal<(viewport: Viewport) => void>

/**
 * Emitted when the VisibilityNotifier2D exits a [Viewport]'s view.
 *
*/
$viewport_exited: Signal<(viewport: Viewport) => void>

}