godot-docs/classes/class_gradient.rst

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.. _class_Gradient:

Gradient
========

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

A color interpolator resource which can be used to generate colors between user-defined color points.

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

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

Given a set of colors, this resource will interpolate them in order. This means that if you have color 1, color 2 and color 3, the gradient will interpolate from color 1 to color 2 and from color 2 to color 3. The gradient will initially have 2 colors (black and white), one (black) at gradient lower offset 0 and the other (white) at the gradient higher offset 1.

See also :ref:`Curve<class_Curve>` which supports more complex easing methods, but does not support colors.

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

Properties
----------

.. table::
   :widths: auto

   +-----------------------------------------------------------+-----------------------------------------------------------------------+----------------------------------------------+
   | :ref:`PackedColorArray<class_PackedColorArray>`           | :ref:`colors<class_Gradient_property_colors>`                         | ``PackedColorArray(0, 0, 0, 1, 1, 1, 1, 1)`` |
   +-----------------------------------------------------------+-----------------------------------------------------------------------+----------------------------------------------+
   | :ref:`InterpolationMode<enum_Gradient_InterpolationMode>` | :ref:`interpolation_mode<class_Gradient_property_interpolation_mode>` | ``0``                                        |
   +-----------------------------------------------------------+-----------------------------------------------------------------------+----------------------------------------------+
   | :ref:`PackedFloat32Array<class_PackedFloat32Array>`       | :ref:`offsets<class_Gradient_property_offsets>`                       | ``PackedFloat32Array(0, 1)``                 |
   +-----------------------------------------------------------+-----------------------------------------------------------------------+----------------------------------------------+

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

Methods
-------

.. table::
   :widths: auto

   +---------------------------+---------------------------------------------------------------------------------------------------------------------------------+
   | void                      | :ref:`add_point<class_Gradient_method_add_point>` **(** :ref:`float<class_float>` offset, :ref:`Color<class_Color>` color **)** |
   +---------------------------+---------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Color<class_Color>` | :ref:`get_color<class_Gradient_method_get_color>` **(** :ref:`int<class_int>` point **)**                                       |
   +---------------------------+---------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`float<class_float>` | :ref:`get_offset<class_Gradient_method_get_offset>` **(** :ref:`int<class_int>` point **)**                                     |
   +---------------------------+---------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`     | :ref:`get_point_count<class_Gradient_method_get_point_count>` **(** **)** |const|                                               |
   +---------------------------+---------------------------------------------------------------------------------------------------------------------------------+
   | void                      | :ref:`remove_point<class_Gradient_method_remove_point>` **(** :ref:`int<class_int>` point **)**                                 |
   +---------------------------+---------------------------------------------------------------------------------------------------------------------------------+
   | void                      | :ref:`reverse<class_Gradient_method_reverse>` **(** **)**                                                                       |
   +---------------------------+---------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Color<class_Color>` | :ref:`sample<class_Gradient_method_sample>` **(** :ref:`float<class_float>` offset **)**                                        |
   +---------------------------+---------------------------------------------------------------------------------------------------------------------------------+
   | void                      | :ref:`set_color<class_Gradient_method_set_color>` **(** :ref:`int<class_int>` point, :ref:`Color<class_Color>` color **)**      |
   +---------------------------+---------------------------------------------------------------------------------------------------------------------------------+
   | void                      | :ref:`set_offset<class_Gradient_method_set_offset>` **(** :ref:`int<class_int>` point, :ref:`float<class_float>` offset **)**   |
   +---------------------------+---------------------------------------------------------------------------------------------------------------------------------+

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

----

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

Enumerations
------------

.. _enum_Gradient_InterpolationMode:

.. rst-class:: classref-enumeration

enum **InterpolationMode**:

.. _class_Gradient_constant_GRADIENT_INTERPOLATE_LINEAR:

.. rst-class:: classref-enumeration-constant

:ref:`InterpolationMode<enum_Gradient_InterpolationMode>` **GRADIENT_INTERPOLATE_LINEAR** = ``0``

Linear interpolation.

.. _class_Gradient_constant_GRADIENT_INTERPOLATE_CONSTANT:

.. rst-class:: classref-enumeration-constant

:ref:`InterpolationMode<enum_Gradient_InterpolationMode>` **GRADIENT_INTERPOLATE_CONSTANT** = ``1``

Constant interpolation, color changes abruptly at each point and stays uniform between. This might cause visible aliasing when used for a gradient texture in some cases.

.. _class_Gradient_constant_GRADIENT_INTERPOLATE_CUBIC:

.. rst-class:: classref-enumeration-constant

:ref:`InterpolationMode<enum_Gradient_InterpolationMode>` **GRADIENT_INTERPOLATE_CUBIC** = ``2``

Cubic interpolation.

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

----

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

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

.. _class_Gradient_property_colors:

.. rst-class:: classref-property

:ref:`PackedColorArray<class_PackedColorArray>` **colors** = ``PackedColorArray(0, 0, 0, 1, 1, 1, 1, 1)``

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

- void **set_colors** **(** :ref:`PackedColorArray<class_PackedColorArray>` value **)**
- :ref:`PackedColorArray<class_PackedColorArray>` **get_colors** **(** **)**

Gradient's colors returned as a :ref:`PackedColorArray<class_PackedColorArray>`.

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

----

.. _class_Gradient_property_interpolation_mode:

.. rst-class:: classref-property

:ref:`InterpolationMode<enum_Gradient_InterpolationMode>` **interpolation_mode** = ``0``

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

- void **set_interpolation_mode** **(** :ref:`InterpolationMode<enum_Gradient_InterpolationMode>` value **)**
- :ref:`InterpolationMode<enum_Gradient_InterpolationMode>` **get_interpolation_mode** **(** **)**

Defines how the colors between points of the gradient are interpolated. See :ref:`InterpolationMode<enum_Gradient_InterpolationMode>` for available modes.

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

----

.. _class_Gradient_property_offsets:

.. rst-class:: classref-property

:ref:`PackedFloat32Array<class_PackedFloat32Array>` **offsets** = ``PackedFloat32Array(0, 1)``

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

- void **set_offsets** **(** :ref:`PackedFloat32Array<class_PackedFloat32Array>` value **)**
- :ref:`PackedFloat32Array<class_PackedFloat32Array>` **get_offsets** **(** **)**

Gradient's offsets returned as a :ref:`PackedFloat32Array<class_PackedFloat32Array>`.

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

----

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

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

.. _class_Gradient_method_add_point:

.. rst-class:: classref-method

void **add_point** **(** :ref:`float<class_float>` offset, :ref:`Color<class_Color>` color **)**

Adds the specified color to the end of the gradient, with the specified offset.

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

----

.. _class_Gradient_method_get_color:

.. rst-class:: classref-method

:ref:`Color<class_Color>` **get_color** **(** :ref:`int<class_int>` point **)**

Returns the color of the gradient color at index ``point``.

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

----

.. _class_Gradient_method_get_offset:

.. rst-class:: classref-method

:ref:`float<class_float>` **get_offset** **(** :ref:`int<class_int>` point **)**

Returns the offset of the gradient color at index ``point``.

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

----

.. _class_Gradient_method_get_point_count:

.. rst-class:: classref-method

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

Returns the number of colors in the gradient.

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

----

.. _class_Gradient_method_remove_point:

.. rst-class:: classref-method

void **remove_point** **(** :ref:`int<class_int>` point **)**

Removes the color at the index ``point``.

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

----

.. _class_Gradient_method_reverse:

.. rst-class:: classref-method

void **reverse** **(** **)**

Reverses/mirrors the gradient.

\ **Note:** This method mirrors all points around the middle of the gradient, which may produce unexpected results when :ref:`interpolation_mode<class_Gradient_property_interpolation_mode>` is set to :ref:`GRADIENT_INTERPOLATE_CONSTANT<class_Gradient_constant_GRADIENT_INTERPOLATE_CONSTANT>`.

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

----

.. _class_Gradient_method_sample:

.. rst-class:: classref-method

:ref:`Color<class_Color>` **sample** **(** :ref:`float<class_float>` offset **)**

Returns the interpolated color specified by ``offset``.

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

----

.. _class_Gradient_method_set_color:

.. rst-class:: classref-method

void **set_color** **(** :ref:`int<class_int>` point, :ref:`Color<class_Color>` color **)**

Sets the color of the gradient color at index ``point``.

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

----

.. _class_Gradient_method_set_offset:

.. rst-class:: classref-method

void **set_offset** **(** :ref:`int<class_int>` point, :ref:`float<class_float>` offset **)**

Sets the offset for the gradient color at index ``point``.

.. |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.)`