godot-docs/classes/class_gltflight.rst

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.. _class_GLTFLight:

GLTFLight
=========

**Inherits:** :ref:`Resource<class_Resource>` **<** :ref:`Reference<class_Reference>` **<** :ref:`Object<class_Object>`

Represents a GLTF light.

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

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

Represents a light as defined by the ``KHR_lights_punctual`` GLTF extension.

\ **Note:** This class is only compiled in editor builds. Run-time glTF loading and saving is *not* available in exported projects. References to **GLTFLight** within a script will cause an error in an exported project.

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

Tutorials
---------

- `KHR_lights_punctual GLTF extension spec <https://github.com/KhronosGroup/glTF/blob/main/extensions/2.0/Khronos/KHR_lights_punctual>`__

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

Properties
----------

.. table::
   :widths: auto

   +-----------------------------+--------------------------------------------------------------------+-------------------------+
   | :ref:`Color<class_Color>`   | :ref:`color<class_GLTFLight_property_color>`                       | ``Color( 1, 1, 1, 1 )`` |
   +-----------------------------+--------------------------------------------------------------------+-------------------------+
   | :ref:`float<class_float>`   | :ref:`inner_cone_angle<class_GLTFLight_property_inner_cone_angle>` | ``0.0``                 |
   +-----------------------------+--------------------------------------------------------------------+-------------------------+
   | :ref:`float<class_float>`   | :ref:`intensity<class_GLTFLight_property_intensity>`               | ``1.0``                 |
   +-----------------------------+--------------------------------------------------------------------+-------------------------+
   | :ref:`float<class_float>`   | :ref:`outer_cone_angle<class_GLTFLight_property_outer_cone_angle>` | ``0.785398``            |
   +-----------------------------+--------------------------------------------------------------------+-------------------------+
   | :ref:`float<class_float>`   | :ref:`range<class_GLTFLight_property_range>`                       | ``inf``                 |
   +-----------------------------+--------------------------------------------------------------------+-------------------------+
   | :ref:`String<class_String>` | :ref:`type<class_GLTFLight_property_type>`                         | ``""``                  |
   +-----------------------------+--------------------------------------------------------------------+-------------------------+

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

Methods
-------

.. table::
   :widths: auto

   +-------------------------------------+--------------------------------------------------------------------------------+
   | :ref:`Dictionary<class_Dictionary>` | :ref:`to_dictionary<class_GLTFLight_method_to_dictionary>` **(** **)** |const| |
   +-------------------------------------+--------------------------------------------------------------------------------+
   | :ref:`Light<class_Light>`           | :ref:`to_node<class_GLTFLight_method_to_node>` **(** **)** |const|             |
   +-------------------------------------+--------------------------------------------------------------------------------+

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

----

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

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

.. _class_GLTFLight_property_color:

.. rst-class:: classref-property

:ref:`Color<class_Color>` **color** = ``Color( 1, 1, 1, 1 )``

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

- void **set_color** **(** :ref:`Color<class_Color>` value **)**
- :ref:`Color<class_Color>` **get_color** **(** **)**

The :ref:`Color<class_Color>` of the light. Defaults to white. A black color causes the light to have no effect.

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

----

.. _class_GLTFLight_property_inner_cone_angle:

.. rst-class:: classref-property

:ref:`float<class_float>` **inner_cone_angle** = ``0.0``

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

- void **set_inner_cone_angle** **(** :ref:`float<class_float>` value **)**
- :ref:`float<class_float>` **get_inner_cone_angle** **(** **)**

The inner angle of the cone in a spotlight. Must be less than or equal to the outer cone angle.

Within this angle, the light is at full brightness. Between the inner and outer cone angles, there is a transition from full brightness to zero brightness. When creating a Godot :ref:`SpotLight<class_SpotLight>`, the ratio between the inner and outer cone angles is used to calculate the attenuation of the light.

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

----

.. _class_GLTFLight_property_intensity:

.. rst-class:: classref-property

:ref:`float<class_float>` **intensity** = ``1.0``

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

- void **set_intensity** **(** :ref:`float<class_float>` value **)**
- :ref:`float<class_float>` **get_intensity** **(** **)**

The intensity of the light. This is expressed in candelas (lumens per steradian) for point and spot lights, and lux (lumens per m²) for directional lights. When creating a Godot light, this value is converted to a unitless multiplier.

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

----

.. _class_GLTFLight_property_outer_cone_angle:

.. rst-class:: classref-property

:ref:`float<class_float>` **outer_cone_angle** = ``0.785398``

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

- void **set_outer_cone_angle** **(** :ref:`float<class_float>` value **)**
- :ref:`float<class_float>` **get_outer_cone_angle** **(** **)**

The outer angle of the cone in a spotlight. Must be greater than or equal to the inner angle.

At this angle, the light drops off to zero brightness. Between the inner and outer cone angles, there is a transition from full brightness to zero brightness. If this angle is a half turn, then the spotlight emits in all directions. When creating a Godot :ref:`SpotLight<class_SpotLight>`, the outer cone angle is used as the angle of the spotlight.

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

----

.. _class_GLTFLight_property_range:

.. rst-class:: classref-property

:ref:`float<class_float>` **range** = ``inf``

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

- void **set_range** **(** :ref:`float<class_float>` value **)**
- :ref:`float<class_float>` **get_range** **(** **)**

The range of the light, beyond which the light has no effect. GLTF lights with no range defined behave like physical lights (which have infinite range). When creating a Godot light, the range is clamped to 4096.

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

----

.. _class_GLTFLight_property_type:

.. rst-class:: classref-property

:ref:`String<class_String>` **type** = ``""``

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

- void **set_type** **(** :ref:`String<class_String>` value **)**
- :ref:`String<class_String>` **get_type** **(** **)**

The type of the light. The values accepted by Godot are "point", "spot", and "directional", which correspond to Godot's :ref:`OmniLight<class_OmniLight>`, :ref:`SpotLight<class_SpotLight>`, and :ref:`DirectionalLight<class_DirectionalLight>` respectively.

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

----

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

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

.. _class_GLTFLight_method_to_dictionary:

.. rst-class:: classref-method

:ref:`Dictionary<class_Dictionary>` **to_dictionary** **(** **)** |const|

Serializes this GLTFLight instance into a :ref:`Dictionary<class_Dictionary>`.

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

----

.. _class_GLTFLight_method_to_node:

.. rst-class:: classref-method

:ref:`Light<class_Light>` **to_node** **(** **)** |const|

Converts this GLTFLight instance into a Godot :ref:`Light<class_Light>` node.

.. |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.)`
.. |static| replace:: :abbr:`static (This method doesn't need an instance to be called, so it can be called directly using the class name.)`