godot-docs/classes/class_lightmapgidata.rst

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.. _class_LightmapGIData:

LightmapGIData
==============

**Inherits:** :ref:`Resource<class_Resource>` **<** :ref:`RefCounted<class_RefCounted>` **<** :ref:`Object<class_Object>`

Contains baked lightmap and dynamic object probe data for :ref:`LightmapGI<class_LightmapGI>`.

.. rst-class:: classref-introduction-group

Description
-----------

**LightmapGIData** contains baked lightmap and dynamic object probe data for :ref:`LightmapGI<class_LightmapGI>`. It is replaced every time lightmaps are baked in :ref:`LightmapGI<class_LightmapGI>`.

.. rst-class:: classref-reftable-group

Properties
----------

.. table::
   :widths: auto

   +---------------------------------------------+-------------------------------------------------------------------+
   | :ref:`TextureLayered<class_TextureLayered>` | :ref:`light_texture<class_LightmapGIData_property_light_texture>` |
   +---------------------------------------------+-------------------------------------------------------------------+

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Methods
-------

.. table::
   :widths: auto

   +---------------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                            | :ref:`add_user<class_LightmapGIData_method_add_user>` **(** :ref:`NodePath<class_NodePath>` path, :ref:`Rect2<class_Rect2>` uv_scale, :ref:`int<class_int>` slice_index, :ref:`int<class_int>` sub_instance **)** |
   +---------------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                            | :ref:`clear_users<class_LightmapGIData_method_clear_users>` **(** **)**                                                                                                                                           |
   +---------------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`           | :ref:`get_user_count<class_LightmapGIData_method_get_user_count>` **(** **)** |const|                                                                                                                             |
   +---------------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`NodePath<class_NodePath>` | :ref:`get_user_path<class_LightmapGIData_method_get_user_path>` **(** :ref:`int<class_int>` user_idx **)** |const|                                                                                                |
   +---------------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`         | :ref:`is_using_spherical_harmonics<class_LightmapGIData_method_is_using_spherical_harmonics>` **(** **)** |const|                                                                                                 |
   +---------------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                            | :ref:`set_uses_spherical_harmonics<class_LightmapGIData_method_set_uses_spherical_harmonics>` **(** :ref:`bool<class_bool>` uses_spherical_harmonics **)**                                                        |
   +---------------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+

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----

.. rst-class:: classref-descriptions-group

Property Descriptions
---------------------

.. _class_LightmapGIData_property_light_texture:

.. rst-class:: classref-property

:ref:`TextureLayered<class_TextureLayered>` **light_texture**

.. rst-class:: classref-property-setget

- void **set_light_texture** **(** :ref:`TextureLayered<class_TextureLayered>` value **)**
- :ref:`TextureLayered<class_TextureLayered>` **get_light_texture** **(** **)**

The lightmap atlas texture generated by the lightmapper.

.. rst-class:: classref-section-separator

----

.. rst-class:: classref-descriptions-group

Method Descriptions
-------------------

.. _class_LightmapGIData_method_add_user:

.. rst-class:: classref-method

void **add_user** **(** :ref:`NodePath<class_NodePath>` path, :ref:`Rect2<class_Rect2>` uv_scale, :ref:`int<class_int>` slice_index, :ref:`int<class_int>` sub_instance **)**

Adds an object that is considered baked within this **LightmapGIData**.

.. rst-class:: classref-item-separator

----

.. _class_LightmapGIData_method_clear_users:

.. rst-class:: classref-method

void **clear_users** **(** **)**

Clear all objects that are considered baked within this **LightmapGIData**.

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----

.. _class_LightmapGIData_method_get_user_count:

.. rst-class:: classref-method

:ref:`int<class_int>` **get_user_count** **(** **)** |const|

Returns the number of objects that are considered baked within this **LightmapGIData**.

.. rst-class:: classref-item-separator

----

.. _class_LightmapGIData_method_get_user_path:

.. rst-class:: classref-method

:ref:`NodePath<class_NodePath>` **get_user_path** **(** :ref:`int<class_int>` user_idx **)** |const|

Returns the :ref:`NodePath<class_NodePath>` of the baked object at index ``user_idx``.

.. rst-class:: classref-item-separator

----

.. _class_LightmapGIData_method_is_using_spherical_harmonics:

.. rst-class:: classref-method

:ref:`bool<class_bool>` **is_using_spherical_harmonics** **(** **)** |const|

If ``true``, lightmaps were baked with directional information. See also :ref:`LightmapGI.directional<class_LightmapGI_property_directional>`.

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----

.. _class_LightmapGIData_method_set_uses_spherical_harmonics:

.. rst-class:: classref-method

void **set_uses_spherical_harmonics** **(** :ref:`bool<class_bool>` uses_spherical_harmonics **)**

If ``uses_spherical_harmonics`` is ``true``, tells the engine to treat the lightmap data as if it was baked with directional information.

\ **Note:** Changing this value on already baked lightmaps will not cause them to be baked again. This means the material appearance will look incorrect until lightmaps are baked again, in which case the value set here is discarded as the entire **LightmapGIData** resource is replaced by the lightmapper.

.. |virtual| replace:: :abbr:`virtual (This method should typically be overridden by the user to have any effect.)`
.. |const| replace:: :abbr:`const (This method has no side effects. It doesn't modify any of the instance's member variables.)`
.. |vararg| replace:: :abbr:`vararg (This method accepts any number of arguments after the ones described here.)`
.. |constructor| replace:: :abbr:`constructor (This method is used to construct a type.)`
.. |static| replace:: :abbr:`static (This method doesn't need an instance to be called, so it can be called directly using the class name.)`
.. |operator| replace:: :abbr:`operator (This method describes a valid operator to use with this type as left-hand operand.)`