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159 lines
6.3 KiB
ReStructuredText
159 lines
6.3 KiB
ReStructuredText
:github_url: hide
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.. DO NOT EDIT THIS FILE!!!
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.. Generated automatically from Godot engine sources.
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.. Generator: https://github.com/godotengine/godot/tree/master/doc/tools/make_rst.py.
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.. XML source: https://github.com/godotengine/godot/tree/master/doc/classes/VisibleOnScreenNotifier2D.xml.
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.. _class_VisibleOnScreenNotifier2D:
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VisibleOnScreenNotifier2D
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=========================
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**Inherits:** :ref:`Node2D<class_Node2D>` **<** :ref:`CanvasItem<class_CanvasItem>` **<** :ref:`Node<class_Node>` **<** :ref:`Object<class_Object>`
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**Inherited By:** :ref:`VisibleOnScreenEnabler2D<class_VisibleOnScreenEnabler2D>`
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A rectangular region of 2D space that detects whether it is visible on screen.
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.. rst-class:: classref-introduction-group
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Description
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-----------
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**VisibleOnScreenNotifier2D** represents a rectangular region of 2D space. When any part of this region becomes visible on screen or in a viewport, it will emit a :ref:`screen_entered<class_VisibleOnScreenNotifier2D_signal_screen_entered>` signal, and likewise it will emit a :ref:`screen_exited<class_VisibleOnScreenNotifier2D_signal_screen_exited>` signal when no part of it remains visible.
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If you want a node to be enabled automatically when this region is visible on screen, use :ref:`VisibleOnScreenEnabler2D<class_VisibleOnScreenEnabler2D>`.
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\ **Note:** **VisibleOnScreenNotifier2D** uses the render culling code to determine whether it's visible on screen, so it won't function unless :ref:`CanvasItem.visible<class_CanvasItem_property_visible>` is set to ``true``.
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.. rst-class:: classref-introduction-group
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Tutorials
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---------
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- `2D Dodge The Creeps Demo <https://godotengine.org/asset-library/asset/2712>`__
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.. rst-class:: classref-reftable-group
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Properties
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----------
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.. table::
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:widths: auto
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+---------------------------+----------------------------------------------------------------------+-----------------------------+
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| :ref:`Rect2<class_Rect2>` | :ref:`rect<class_VisibleOnScreenNotifier2D_property_rect>` | ``Rect2(-10, -10, 20, 20)`` |
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+---------------------------+----------------------------------------------------------------------+-----------------------------+
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| :ref:`bool<class_bool>` | :ref:`show_rect<class_VisibleOnScreenNotifier2D_property_show_rect>` | ``true`` |
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+---------------------------+----------------------------------------------------------------------+-----------------------------+
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.. rst-class:: classref-reftable-group
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Methods
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-------
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.. table::
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:widths: auto
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+-------------------------+----------------------------------------------------------------------------------------+
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| :ref:`bool<class_bool>` | :ref:`is_on_screen<class_VisibleOnScreenNotifier2D_method_is_on_screen>`\ (\ ) |const| |
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+-------------------------+----------------------------------------------------------------------------------------+
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.. rst-class:: classref-section-separator
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----
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.. rst-class:: classref-descriptions-group
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Signals
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-------
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.. _class_VisibleOnScreenNotifier2D_signal_screen_entered:
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.. rst-class:: classref-signal
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**screen_entered**\ (\ ) :ref:`🔗<class_VisibleOnScreenNotifier2D_signal_screen_entered>`
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Emitted when the VisibleOnScreenNotifier2D enters the screen.
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.. rst-class:: classref-item-separator
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----
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.. _class_VisibleOnScreenNotifier2D_signal_screen_exited:
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.. rst-class:: classref-signal
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**screen_exited**\ (\ ) :ref:`🔗<class_VisibleOnScreenNotifier2D_signal_screen_exited>`
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Emitted when the VisibleOnScreenNotifier2D exits the screen.
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.. rst-class:: classref-section-separator
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----
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.. rst-class:: classref-descriptions-group
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Property Descriptions
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---------------------
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.. _class_VisibleOnScreenNotifier2D_property_rect:
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.. rst-class:: classref-property
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:ref:`Rect2<class_Rect2>` **rect** = ``Rect2(-10, -10, 20, 20)`` :ref:`🔗<class_VisibleOnScreenNotifier2D_property_rect>`
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.. rst-class:: classref-property-setget
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- |void| **set_rect**\ (\ value\: :ref:`Rect2<class_Rect2>`\ )
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- :ref:`Rect2<class_Rect2>` **get_rect**\ (\ )
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The VisibleOnScreenNotifier2D's bounding rectangle.
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.. rst-class:: classref-item-separator
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----
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.. _class_VisibleOnScreenNotifier2D_property_show_rect:
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.. rst-class:: classref-property
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:ref:`bool<class_bool>` **show_rect** = ``true`` :ref:`🔗<class_VisibleOnScreenNotifier2D_property_show_rect>`
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.. rst-class:: classref-property-setget
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- |void| **set_show_rect**\ (\ value\: :ref:`bool<class_bool>`\ )
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- :ref:`bool<class_bool>` **is_showing_rect**\ (\ )
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If ``true``, shows the rectangle area of :ref:`rect<class_VisibleOnScreenNotifier2D_property_rect>` in the editor with a translucent magenta fill. Unlike changing the visibility of the VisibleOnScreenNotifier2D, this does not affect the screen culling detection.
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.. rst-class:: classref-section-separator
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----
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.. rst-class:: classref-descriptions-group
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Method Descriptions
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-------------------
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.. _class_VisibleOnScreenNotifier2D_method_is_on_screen:
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.. rst-class:: classref-method
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:ref:`bool<class_bool>` **is_on_screen**\ (\ ) |const| :ref:`🔗<class_VisibleOnScreenNotifier2D_method_is_on_screen>`
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If ``true``, the bounding rectangle is on the screen.
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\ **Note:** It takes one frame for the **VisibleOnScreenNotifier2D**'s visibility to be determined once added to the scene tree, so this method will always return ``false`` right after it is instantiated, before the draw pass.
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.. |virtual| replace:: :abbr:`virtual (This method should typically be overridden by the user to have any effect.)`
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.. |required| replace:: :abbr:`required (This method is required to be overridden when extending its base class.)`
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.. |const| replace:: :abbr:`const (This method has no side effects. It doesn't modify any of the instance's member variables.)`
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.. |vararg| replace:: :abbr:`vararg (This method accepts any number of arguments after the ones described here.)`
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.. |constructor| replace:: :abbr:`constructor (This method is used to construct a type.)`
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.. |static| replace:: :abbr:`static (This method doesn't need an instance to be called, so it can be called directly using the class name.)`
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.. |operator| replace:: :abbr:`operator (This method describes a valid operator to use with this type as left-hand operand.)`
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.. |bitfield| replace:: :abbr:`BitField (This value is an integer composed as a bitmask of the following flags.)`
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.. |void| replace:: :abbr:`void (No return value.)`
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