godot-docs/classes/class_animation.rst

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.. XML source: https://github.com/godotengine/godot/tree/master/doc/classes/Animation.xml.

.. _class_Animation:

Animation
=========

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

Holds data that can be used to animate anything in the engine.

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

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

This resource holds data that can be used to animate anything in the engine. Animations are divided into tracks and each track must be linked to a node. The state of that node can be changed through time, by adding timed keys (events) to the track.


.. tabs::

 .. code-tab:: gdscript

    # This creates an animation that makes the node "Enemy" move to the right by
    # 100 pixels in 0.5 seconds.
    var animation = Animation.new()
    var track_index = animation.add_track(Animation.TYPE_VALUE)
    animation.track_set_path(track_index, "Enemy:position:x")
    animation.track_insert_key(track_index, 0.0, 0)
    animation.track_insert_key(track_index, 0.5, 100)

 .. code-tab:: csharp

    // This creates an animation that makes the node "Enemy" move to the right by
    // 100 pixels in 0.5 seconds.
    var animation = new Animation();
    int trackIndex = animation.AddTrack(Animation.TrackType.Value);
    animation.TrackSetPath(trackIndex, "Enemy:position:x");
    animation.TrackInsertKey(trackIndex, 0.0f, 0);
    animation.TrackInsertKey(trackIndex, 0.5f, 100);



Animations are just data containers, and must be added to nodes such as an :ref:`AnimationPlayer<class_AnimationPlayer>` to be played back. Animation tracks have different types, each with its own set of dedicated methods. Check :ref:`TrackType<enum_Animation_TrackType>` to see available types.

\ **Note:** For 3D position/rotation/scale, using the dedicated :ref:`TYPE_POSITION_3D<class_Animation_constant_TYPE_POSITION_3D>`, :ref:`TYPE_ROTATION_3D<class_Animation_constant_TYPE_ROTATION_3D>` and :ref:`TYPE_SCALE_3D<class_Animation_constant_TYPE_SCALE_3D>` track types instead of :ref:`TYPE_VALUE<class_Animation_constant_TYPE_VALUE>` is recommended for performance reasons.

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

Tutorials
---------

- :doc:`Animation documentation index <../tutorials/animation/index>`

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

Properties
----------

.. table::
   :widths: auto

   +------------------------------------------+------------------------------------------------------+---------+
   | :ref:`float<class_float>`                | :ref:`length<class_Animation_property_length>`       | ``1.0`` |
   +------------------------------------------+------------------------------------------------------+---------+
   | :ref:`LoopMode<enum_Animation_LoopMode>` | :ref:`loop_mode<class_Animation_property_loop_mode>` | ``0``   |
   +------------------------------------------+------------------------------------------------------+---------+
   | :ref:`float<class_float>`                | :ref:`step<class_Animation_property_step>`           | ``0.1`` |
   +------------------------------------------+------------------------------------------------------+---------+

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

Methods
-------

.. table::
   :widths: auto

   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                                      | :ref:`add_track<class_Animation_method_add_track>` **(** :ref:`TrackType<enum_Animation_TrackType>` type, :ref:`int<class_int>` at_position=-1 **)**                                                                                                                                                       |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`StringName<class_StringName>`                        | :ref:`animation_track_get_key_animation<class_Animation_method_animation_track_get_key_animation>` **(** :ref:`int<class_int>` track_idx, :ref:`int<class_int>` key_idx **)** |const|                                                                                                                      |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                                      | :ref:`animation_track_insert_key<class_Animation_method_animation_track_insert_key>` **(** :ref:`int<class_int>` track_idx, :ref:`float<class_float>` time, :ref:`StringName<class_StringName>` animation **)**                                                                                            |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                                       | :ref:`animation_track_set_key_animation<class_Animation_method_animation_track_set_key_animation>` **(** :ref:`int<class_int>` track_idx, :ref:`int<class_int>` key_idx, :ref:`StringName<class_StringName>` animation **)**                                                                               |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`float<class_float>`                                  | :ref:`audio_track_get_key_end_offset<class_Animation_method_audio_track_get_key_end_offset>` **(** :ref:`int<class_int>` track_idx, :ref:`int<class_int>` key_idx **)** |const|                                                                                                                            |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`float<class_float>`                                  | :ref:`audio_track_get_key_start_offset<class_Animation_method_audio_track_get_key_start_offset>` **(** :ref:`int<class_int>` track_idx, :ref:`int<class_int>` key_idx **)** |const|                                                                                                                        |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Resource<class_Resource>`                            | :ref:`audio_track_get_key_stream<class_Animation_method_audio_track_get_key_stream>` **(** :ref:`int<class_int>` track_idx, :ref:`int<class_int>` key_idx **)** |const|                                                                                                                                    |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                                      | :ref:`audio_track_insert_key<class_Animation_method_audio_track_insert_key>` **(** :ref:`int<class_int>` track_idx, :ref:`float<class_float>` time, :ref:`Resource<class_Resource>` stream, :ref:`float<class_float>` start_offset=0, :ref:`float<class_float>` end_offset=0 **)**                         |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`                                    | :ref:`audio_track_is_use_blend<class_Animation_method_audio_track_is_use_blend>` **(** :ref:`int<class_int>` track_idx **)** |const|                                                                                                                                                                       |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                                       | :ref:`audio_track_set_key_end_offset<class_Animation_method_audio_track_set_key_end_offset>` **(** :ref:`int<class_int>` track_idx, :ref:`int<class_int>` key_idx, :ref:`float<class_float>` offset **)**                                                                                                  |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                                       | :ref:`audio_track_set_key_start_offset<class_Animation_method_audio_track_set_key_start_offset>` **(** :ref:`int<class_int>` track_idx, :ref:`int<class_int>` key_idx, :ref:`float<class_float>` offset **)**                                                                                              |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                                       | :ref:`audio_track_set_key_stream<class_Animation_method_audio_track_set_key_stream>` **(** :ref:`int<class_int>` track_idx, :ref:`int<class_int>` key_idx, :ref:`Resource<class_Resource>` stream **)**                                                                                                    |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                                       | :ref:`audio_track_set_use_blend<class_Animation_method_audio_track_set_use_blend>` **(** :ref:`int<class_int>` track_idx, :ref:`bool<class_bool>` enable **)**                                                                                                                                             |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Vector2<class_Vector2>`                              | :ref:`bezier_track_get_key_in_handle<class_Animation_method_bezier_track_get_key_in_handle>` **(** :ref:`int<class_int>` track_idx, :ref:`int<class_int>` key_idx **)** |const|                                                                                                                            |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Vector2<class_Vector2>`                              | :ref:`bezier_track_get_key_out_handle<class_Animation_method_bezier_track_get_key_out_handle>` **(** :ref:`int<class_int>` track_idx, :ref:`int<class_int>` key_idx **)** |const|                                                                                                                          |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`float<class_float>`                                  | :ref:`bezier_track_get_key_value<class_Animation_method_bezier_track_get_key_value>` **(** :ref:`int<class_int>` track_idx, :ref:`int<class_int>` key_idx **)** |const|                                                                                                                                    |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                                      | :ref:`bezier_track_insert_key<class_Animation_method_bezier_track_insert_key>` **(** :ref:`int<class_int>` track_idx, :ref:`float<class_float>` time, :ref:`float<class_float>` value, :ref:`Vector2<class_Vector2>` in_handle=Vector2(0, 0), :ref:`Vector2<class_Vector2>` out_handle=Vector2(0, 0) **)** |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`float<class_float>`                                  | :ref:`bezier_track_interpolate<class_Animation_method_bezier_track_interpolate>` **(** :ref:`int<class_int>` track_idx, :ref:`float<class_float>` time **)** |const|                                                                                                                                       |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                                       | :ref:`bezier_track_set_key_in_handle<class_Animation_method_bezier_track_set_key_in_handle>` **(** :ref:`int<class_int>` track_idx, :ref:`int<class_int>` key_idx, :ref:`Vector2<class_Vector2>` in_handle, :ref:`float<class_float>` balanced_value_time_ratio=1.0 **)**                                  |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                                       | :ref:`bezier_track_set_key_out_handle<class_Animation_method_bezier_track_set_key_out_handle>` **(** :ref:`int<class_int>` track_idx, :ref:`int<class_int>` key_idx, :ref:`Vector2<class_Vector2>` out_handle, :ref:`float<class_float>` balanced_value_time_ratio=1.0 **)**                               |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                                       | :ref:`bezier_track_set_key_value<class_Animation_method_bezier_track_set_key_value>` **(** :ref:`int<class_int>` track_idx, :ref:`int<class_int>` key_idx, :ref:`float<class_float>` value **)**                                                                                                           |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                                      | :ref:`blend_shape_track_insert_key<class_Animation_method_blend_shape_track_insert_key>` **(** :ref:`int<class_int>` track_idx, :ref:`float<class_float>` time, :ref:`float<class_float>` amount **)**                                                                                                     |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`float<class_float>`                                  | :ref:`blend_shape_track_interpolate<class_Animation_method_blend_shape_track_interpolate>` **(** :ref:`int<class_int>` track_idx, :ref:`float<class_float>` time_sec **)** |const|                                                                                                                         |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                                       | :ref:`clear<class_Animation_method_clear>` **(** **)**                                                                                                                                                                                                                                                     |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                                       | :ref:`compress<class_Animation_method_compress>` **(** :ref:`int<class_int>` page_size=8192, :ref:`int<class_int>` fps=120, :ref:`float<class_float>` split_tolerance=4.0 **)**                                                                                                                            |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                                       | :ref:`copy_track<class_Animation_method_copy_track>` **(** :ref:`int<class_int>` track_idx, :ref:`Animation<class_Animation>` to_animation **)**                                                                                                                                                           |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                                      | :ref:`find_track<class_Animation_method_find_track>` **(** :ref:`NodePath<class_NodePath>` path, :ref:`TrackType<enum_Animation_TrackType>` type **)** |const|                                                                                                                                             |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                                      | :ref:`get_track_count<class_Animation_method_get_track_count>` **(** **)** |const|                                                                                                                                                                                                                         |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`StringName<class_StringName>`                        | :ref:`method_track_get_name<class_Animation_method_method_track_get_name>` **(** :ref:`int<class_int>` track_idx, :ref:`int<class_int>` key_idx **)** |const|                                                                                                                                              |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Array<class_Array>`                                  | :ref:`method_track_get_params<class_Animation_method_method_track_get_params>` **(** :ref:`int<class_int>` track_idx, :ref:`int<class_int>` key_idx **)** |const|                                                                                                                                          |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                                      | :ref:`position_track_insert_key<class_Animation_method_position_track_insert_key>` **(** :ref:`int<class_int>` track_idx, :ref:`float<class_float>` time, :ref:`Vector3<class_Vector3>` position **)**                                                                                                     |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Vector3<class_Vector3>`                              | :ref:`position_track_interpolate<class_Animation_method_position_track_interpolate>` **(** :ref:`int<class_int>` track_idx, :ref:`float<class_float>` time_sec **)** |const|                                                                                                                               |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                                       | :ref:`remove_track<class_Animation_method_remove_track>` **(** :ref:`int<class_int>` track_idx **)**                                                                                                                                                                                                       |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                                      | :ref:`rotation_track_insert_key<class_Animation_method_rotation_track_insert_key>` **(** :ref:`int<class_int>` track_idx, :ref:`float<class_float>` time, :ref:`Quaternion<class_Quaternion>` rotation **)**                                                                                               |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Quaternion<class_Quaternion>`                        | :ref:`rotation_track_interpolate<class_Animation_method_rotation_track_interpolate>` **(** :ref:`int<class_int>` track_idx, :ref:`float<class_float>` time_sec **)** |const|                                                                                                                               |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                                      | :ref:`scale_track_insert_key<class_Animation_method_scale_track_insert_key>` **(** :ref:`int<class_int>` track_idx, :ref:`float<class_float>` time, :ref:`Vector3<class_Vector3>` scale **)**                                                                                                              |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Vector3<class_Vector3>`                              | :ref:`scale_track_interpolate<class_Animation_method_scale_track_interpolate>` **(** :ref:`int<class_int>` track_idx, :ref:`float<class_float>` time_sec **)** |const|                                                                                                                                     |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                                      | :ref:`track_find_key<class_Animation_method_track_find_key>` **(** :ref:`int<class_int>` track_idx, :ref:`float<class_float>` time, :ref:`FindMode<enum_Animation_FindMode>` find_mode=0 **)** |const|                                                                                                     |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`                                    | :ref:`track_get_interpolation_loop_wrap<class_Animation_method_track_get_interpolation_loop_wrap>` **(** :ref:`int<class_int>` track_idx **)** |const|                                                                                                                                                     |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`InterpolationType<enum_Animation_InterpolationType>` | :ref:`track_get_interpolation_type<class_Animation_method_track_get_interpolation_type>` **(** :ref:`int<class_int>` track_idx **)** |const|                                                                                                                                                               |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                                      | :ref:`track_get_key_count<class_Animation_method_track_get_key_count>` **(** :ref:`int<class_int>` track_idx **)** |const|                                                                                                                                                                                 |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`float<class_float>`                                  | :ref:`track_get_key_time<class_Animation_method_track_get_key_time>` **(** :ref:`int<class_int>` track_idx, :ref:`int<class_int>` key_idx **)** |const|                                                                                                                                                    |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`float<class_float>`                                  | :ref:`track_get_key_transition<class_Animation_method_track_get_key_transition>` **(** :ref:`int<class_int>` track_idx, :ref:`int<class_int>` key_idx **)** |const|                                                                                                                                        |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Variant<class_Variant>`                              | :ref:`track_get_key_value<class_Animation_method_track_get_key_value>` **(** :ref:`int<class_int>` track_idx, :ref:`int<class_int>` key_idx **)** |const|                                                                                                                                                  |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`NodePath<class_NodePath>`                            | :ref:`track_get_path<class_Animation_method_track_get_path>` **(** :ref:`int<class_int>` track_idx **)** |const|                                                                                                                                                                                           |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`TrackType<enum_Animation_TrackType>`                 | :ref:`track_get_type<class_Animation_method_track_get_type>` **(** :ref:`int<class_int>` track_idx **)** |const|                                                                                                                                                                                           |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                                      | :ref:`track_insert_key<class_Animation_method_track_insert_key>` **(** :ref:`int<class_int>` track_idx, :ref:`float<class_float>` time, :ref:`Variant<class_Variant>` key, :ref:`float<class_float>` transition=1 **)**                                                                                    |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`                                    | :ref:`track_is_compressed<class_Animation_method_track_is_compressed>` **(** :ref:`int<class_int>` track_idx **)** |const|                                                                                                                                                                                 |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`                                    | :ref:`track_is_enabled<class_Animation_method_track_is_enabled>` **(** :ref:`int<class_int>` track_idx **)** |const|                                                                                                                                                                                       |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`                                    | :ref:`track_is_imported<class_Animation_method_track_is_imported>` **(** :ref:`int<class_int>` track_idx **)** |const|                                                                                                                                                                                     |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                                       | :ref:`track_move_down<class_Animation_method_track_move_down>` **(** :ref:`int<class_int>` track_idx **)**                                                                                                                                                                                                 |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                                       | :ref:`track_move_to<class_Animation_method_track_move_to>` **(** :ref:`int<class_int>` track_idx, :ref:`int<class_int>` to_idx **)**                                                                                                                                                                       |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                                       | :ref:`track_move_up<class_Animation_method_track_move_up>` **(** :ref:`int<class_int>` track_idx **)**                                                                                                                                                                                                     |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                                       | :ref:`track_remove_key<class_Animation_method_track_remove_key>` **(** :ref:`int<class_int>` track_idx, :ref:`int<class_int>` key_idx **)**                                                                                                                                                                |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                                       | :ref:`track_remove_key_at_time<class_Animation_method_track_remove_key_at_time>` **(** :ref:`int<class_int>` track_idx, :ref:`float<class_float>` time **)**                                                                                                                                               |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                                       | :ref:`track_set_enabled<class_Animation_method_track_set_enabled>` **(** :ref:`int<class_int>` track_idx, :ref:`bool<class_bool>` enabled **)**                                                                                                                                                            |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                                       | :ref:`track_set_imported<class_Animation_method_track_set_imported>` **(** :ref:`int<class_int>` track_idx, :ref:`bool<class_bool>` imported **)**                                                                                                                                                         |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                                       | :ref:`track_set_interpolation_loop_wrap<class_Animation_method_track_set_interpolation_loop_wrap>` **(** :ref:`int<class_int>` track_idx, :ref:`bool<class_bool>` interpolation **)**                                                                                                                      |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                                       | :ref:`track_set_interpolation_type<class_Animation_method_track_set_interpolation_type>` **(** :ref:`int<class_int>` track_idx, :ref:`InterpolationType<enum_Animation_InterpolationType>` interpolation **)**                                                                                             |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                                       | :ref:`track_set_key_time<class_Animation_method_track_set_key_time>` **(** :ref:`int<class_int>` track_idx, :ref:`int<class_int>` key_idx, :ref:`float<class_float>` time **)**                                                                                                                            |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                                       | :ref:`track_set_key_transition<class_Animation_method_track_set_key_transition>` **(** :ref:`int<class_int>` track_idx, :ref:`int<class_int>` key_idx, :ref:`float<class_float>` transition **)**                                                                                                          |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                                       | :ref:`track_set_key_value<class_Animation_method_track_set_key_value>` **(** :ref:`int<class_int>` track_idx, :ref:`int<class_int>` key, :ref:`Variant<class_Variant>` value **)**                                                                                                                         |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                                       | :ref:`track_set_path<class_Animation_method_track_set_path>` **(** :ref:`int<class_int>` track_idx, :ref:`NodePath<class_NodePath>` path **)**                                                                                                                                                             |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                                       | :ref:`track_swap<class_Animation_method_track_swap>` **(** :ref:`int<class_int>` track_idx, :ref:`int<class_int>` with_idx **)**                                                                                                                                                                           |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`UpdateMode<enum_Animation_UpdateMode>`               | :ref:`value_track_get_update_mode<class_Animation_method_value_track_get_update_mode>` **(** :ref:`int<class_int>` track_idx **)** |const|                                                                                                                                                                 |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Variant<class_Variant>`                              | :ref:`value_track_interpolate<class_Animation_method_value_track_interpolate>` **(** :ref:`int<class_int>` track_idx, :ref:`float<class_float>` time_sec **)** |const|                                                                                                                                     |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                                       | :ref:`value_track_set_update_mode<class_Animation_method_value_track_set_update_mode>` **(** :ref:`int<class_int>` track_idx, :ref:`UpdateMode<enum_Animation_UpdateMode>` mode **)**                                                                                                                      |
   +------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+

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

----

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

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

.. _enum_Animation_TrackType:

.. rst-class:: classref-enumeration

enum **TrackType**:

.. _class_Animation_constant_TYPE_VALUE:

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

:ref:`TrackType<enum_Animation_TrackType>` **TYPE_VALUE** = ``0``

Value tracks set values in node properties, but only those which can be interpolated. For 3D position/rotation/scale, using the dedicated :ref:`TYPE_POSITION_3D<class_Animation_constant_TYPE_POSITION_3D>`, :ref:`TYPE_ROTATION_3D<class_Animation_constant_TYPE_ROTATION_3D>` and :ref:`TYPE_SCALE_3D<class_Animation_constant_TYPE_SCALE_3D>` track types instead of :ref:`TYPE_VALUE<class_Animation_constant_TYPE_VALUE>` is recommended for performance reasons.

.. _class_Animation_constant_TYPE_POSITION_3D:

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

:ref:`TrackType<enum_Animation_TrackType>` **TYPE_POSITION_3D** = ``1``

3D position track (values are stored in :ref:`Vector3<class_Vector3>`\ s).

.. _class_Animation_constant_TYPE_ROTATION_3D:

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

:ref:`TrackType<enum_Animation_TrackType>` **TYPE_ROTATION_3D** = ``2``

3D rotation track (values are stored in :ref:`Quaternion<class_Quaternion>`\ s).

.. _class_Animation_constant_TYPE_SCALE_3D:

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

:ref:`TrackType<enum_Animation_TrackType>` **TYPE_SCALE_3D** = ``3``

3D scale track (values are stored in :ref:`Vector3<class_Vector3>`\ s).

.. _class_Animation_constant_TYPE_BLEND_SHAPE:

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

:ref:`TrackType<enum_Animation_TrackType>` **TYPE_BLEND_SHAPE** = ``4``

Blend shape track.

.. _class_Animation_constant_TYPE_METHOD:

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

:ref:`TrackType<enum_Animation_TrackType>` **TYPE_METHOD** = ``5``

Method tracks call functions with given arguments per key.

.. _class_Animation_constant_TYPE_BEZIER:

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

:ref:`TrackType<enum_Animation_TrackType>` **TYPE_BEZIER** = ``6``

Bezier tracks are used to interpolate a value using custom curves. They can also be used to animate sub-properties of vectors and colors (e.g. alpha value of a :ref:`Color<class_Color>`).

.. _class_Animation_constant_TYPE_AUDIO:

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

:ref:`TrackType<enum_Animation_TrackType>` **TYPE_AUDIO** = ``7``

Audio tracks are used to play an audio stream with either type of :ref:`AudioStreamPlayer<class_AudioStreamPlayer>`. The stream can be trimmed and previewed in the animation.

.. _class_Animation_constant_TYPE_ANIMATION:

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

:ref:`TrackType<enum_Animation_TrackType>` **TYPE_ANIMATION** = ``8``

Animation tracks play animations in other :ref:`AnimationPlayer<class_AnimationPlayer>` nodes.

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

----

.. _enum_Animation_InterpolationType:

.. rst-class:: classref-enumeration

enum **InterpolationType**:

.. _class_Animation_constant_INTERPOLATION_NEAREST:

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

:ref:`InterpolationType<enum_Animation_InterpolationType>` **INTERPOLATION_NEAREST** = ``0``

No interpolation (nearest value).

.. _class_Animation_constant_INTERPOLATION_LINEAR:

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

:ref:`InterpolationType<enum_Animation_InterpolationType>` **INTERPOLATION_LINEAR** = ``1``

Linear interpolation.

.. _class_Animation_constant_INTERPOLATION_CUBIC:

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

:ref:`InterpolationType<enum_Animation_InterpolationType>` **INTERPOLATION_CUBIC** = ``2``

Cubic interpolation. This looks smoother than linear interpolation, but is more expensive to interpolate. Stick to :ref:`INTERPOLATION_LINEAR<class_Animation_constant_INTERPOLATION_LINEAR>` for complex 3D animations imported from external software, even if it requires using a higher animation framerate in return.

.. _class_Animation_constant_INTERPOLATION_LINEAR_ANGLE:

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

:ref:`InterpolationType<enum_Animation_InterpolationType>` **INTERPOLATION_LINEAR_ANGLE** = ``3``

Linear interpolation with shortest path rotation.

\ **Note:** The result value is always normalized and may not match the key value.

.. _class_Animation_constant_INTERPOLATION_CUBIC_ANGLE:

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

:ref:`InterpolationType<enum_Animation_InterpolationType>` **INTERPOLATION_CUBIC_ANGLE** = ``4``

Cubic interpolation with shortest path rotation.

\ **Note:** The result value is always normalized and may not match the key value.

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

----

.. _enum_Animation_UpdateMode:

.. rst-class:: classref-enumeration

enum **UpdateMode**:

.. _class_Animation_constant_UPDATE_CONTINUOUS:

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

:ref:`UpdateMode<enum_Animation_UpdateMode>` **UPDATE_CONTINUOUS** = ``0``

Update between keyframes and hold the value.

.. _class_Animation_constant_UPDATE_DISCRETE:

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

:ref:`UpdateMode<enum_Animation_UpdateMode>` **UPDATE_DISCRETE** = ``1``

Update at the keyframes.

.. _class_Animation_constant_UPDATE_CAPTURE:

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

:ref:`UpdateMode<enum_Animation_UpdateMode>` **UPDATE_CAPTURE** = ``2``

Same as linear interpolation, but also interpolates from the current value (i.e. dynamically at runtime) if the first key isn't at 0 seconds.

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

----

.. _enum_Animation_LoopMode:

.. rst-class:: classref-enumeration

enum **LoopMode**:

.. _class_Animation_constant_LOOP_NONE:

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

:ref:`LoopMode<enum_Animation_LoopMode>` **LOOP_NONE** = ``0``

At both ends of the animation, the animation will stop playing.

.. _class_Animation_constant_LOOP_LINEAR:

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

:ref:`LoopMode<enum_Animation_LoopMode>` **LOOP_LINEAR** = ``1``

At both ends of the animation, the animation will be repeated without changing the playback direction.

.. _class_Animation_constant_LOOP_PINGPONG:

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

:ref:`LoopMode<enum_Animation_LoopMode>` **LOOP_PINGPONG** = ``2``

Repeats playback and reverse playback at both ends of the animation.

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

----

.. _enum_Animation_LoopedFlag:

.. rst-class:: classref-enumeration

enum **LoopedFlag**:

.. _class_Animation_constant_LOOPED_FLAG_NONE:

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

:ref:`LoopedFlag<enum_Animation_LoopedFlag>` **LOOPED_FLAG_NONE** = ``0``

This flag indicates that the animation proceeds without any looping.

.. _class_Animation_constant_LOOPED_FLAG_END:

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

:ref:`LoopedFlag<enum_Animation_LoopedFlag>` **LOOPED_FLAG_END** = ``1``

This flag indicates that the animation has reached the end of the animation and just after loop processed.

.. _class_Animation_constant_LOOPED_FLAG_START:

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

:ref:`LoopedFlag<enum_Animation_LoopedFlag>` **LOOPED_FLAG_START** = ``2``

This flag indicates that the animation has reached the start of the animation and just after loop processed.

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

----

.. _enum_Animation_FindMode:

.. rst-class:: classref-enumeration

enum **FindMode**:

.. _class_Animation_constant_FIND_MODE_NEAREST:

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

:ref:`FindMode<enum_Animation_FindMode>` **FIND_MODE_NEAREST** = ``0``

Finds the nearest time key.

.. _class_Animation_constant_FIND_MODE_APPROX:

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

:ref:`FindMode<enum_Animation_FindMode>` **FIND_MODE_APPROX** = ``1``

Finds only the key with approximating the time.

.. _class_Animation_constant_FIND_MODE_EXACT:

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

:ref:`FindMode<enum_Animation_FindMode>` **FIND_MODE_EXACT** = ``2``

Finds only the key with matching the time.

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

----

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

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

.. _class_Animation_property_length:

.. rst-class:: classref-property

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

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

- void **set_length** **(** :ref:`float<class_float>` value **)**
- :ref:`float<class_float>` **get_length** **(** **)**

The total length of the animation (in seconds).

\ **Note:** Length is not delimited by the last key, as this one may be before or after the end to ensure correct interpolation and looping.

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

----

.. _class_Animation_property_loop_mode:

.. rst-class:: classref-property

:ref:`LoopMode<enum_Animation_LoopMode>` **loop_mode** = ``0``

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

- void **set_loop_mode** **(** :ref:`LoopMode<enum_Animation_LoopMode>` value **)**
- :ref:`LoopMode<enum_Animation_LoopMode>` **get_loop_mode** **(** **)**

Determines the behavior of both ends of the animation timeline during animation playback. This is used for correct interpolation of animation cycles, and for hinting the player that it must restart the animation.

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

----

.. _class_Animation_property_step:

.. rst-class:: classref-property

:ref:`float<class_float>` **step** = ``0.1``

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

- void **set_step** **(** :ref:`float<class_float>` value **)**
- :ref:`float<class_float>` **get_step** **(** **)**

The animation step value.

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

----

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

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

.. _class_Animation_method_add_track:

.. rst-class:: classref-method

:ref:`int<class_int>` **add_track** **(** :ref:`TrackType<enum_Animation_TrackType>` type, :ref:`int<class_int>` at_position=-1 **)**

Adds a track to the Animation.

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

----

.. _class_Animation_method_animation_track_get_key_animation:

.. rst-class:: classref-method

:ref:`StringName<class_StringName>` **animation_track_get_key_animation** **(** :ref:`int<class_int>` track_idx, :ref:`int<class_int>` key_idx **)** |const|

Returns the animation name at the key identified by ``key_idx``. The ``track_idx`` must be the index of an Animation Track.

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

----

.. _class_Animation_method_animation_track_insert_key:

.. rst-class:: classref-method

:ref:`int<class_int>` **animation_track_insert_key** **(** :ref:`int<class_int>` track_idx, :ref:`float<class_float>` time, :ref:`StringName<class_StringName>` animation **)**

Inserts a key with value ``animation`` at the given ``time`` (in seconds). The ``track_idx`` must be the index of an Animation Track.

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

----

.. _class_Animation_method_animation_track_set_key_animation:

.. rst-class:: classref-method

void **animation_track_set_key_animation** **(** :ref:`int<class_int>` track_idx, :ref:`int<class_int>` key_idx, :ref:`StringName<class_StringName>` animation **)**

Sets the key identified by ``key_idx`` to value ``animation``. The ``track_idx`` must be the index of an Animation Track.

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

----

.. _class_Animation_method_audio_track_get_key_end_offset:

.. rst-class:: classref-method

:ref:`float<class_float>` **audio_track_get_key_end_offset** **(** :ref:`int<class_int>` track_idx, :ref:`int<class_int>` key_idx **)** |const|

Returns the end offset of the key identified by ``key_idx``. The ``track_idx`` must be the index of an Audio Track.

End offset is the number of seconds cut off at the ending of the audio stream.

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

----

.. _class_Animation_method_audio_track_get_key_start_offset:

.. rst-class:: classref-method

:ref:`float<class_float>` **audio_track_get_key_start_offset** **(** :ref:`int<class_int>` track_idx, :ref:`int<class_int>` key_idx **)** |const|

Returns the start offset of the key identified by ``key_idx``. The ``track_idx`` must be the index of an Audio Track.

Start offset is the number of seconds cut off at the beginning of the audio stream.

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

----

.. _class_Animation_method_audio_track_get_key_stream:

.. rst-class:: classref-method

:ref:`Resource<class_Resource>` **audio_track_get_key_stream** **(** :ref:`int<class_int>` track_idx, :ref:`int<class_int>` key_idx **)** |const|

Returns the audio stream of the key identified by ``key_idx``. The ``track_idx`` must be the index of an Audio Track.

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

----

.. _class_Animation_method_audio_track_insert_key:

.. rst-class:: classref-method

:ref:`int<class_int>` **audio_track_insert_key** **(** :ref:`int<class_int>` track_idx, :ref:`float<class_float>` time, :ref:`Resource<class_Resource>` stream, :ref:`float<class_float>` start_offset=0, :ref:`float<class_float>` end_offset=0 **)**

Inserts an Audio Track key at the given ``time`` in seconds. The ``track_idx`` must be the index of an Audio Track.

\ ``stream`` is the :ref:`AudioStream<class_AudioStream>` resource to play. ``start_offset`` is the number of seconds cut off at the beginning of the audio stream, while ``end_offset`` is at the ending.

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

----

.. _class_Animation_method_audio_track_is_use_blend:

.. rst-class:: classref-method

:ref:`bool<class_bool>` **audio_track_is_use_blend** **(** :ref:`int<class_int>` track_idx **)** |const|

Returns ``true`` if the track at ``track_idx`` will be blended with other animations.

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

----

.. _class_Animation_method_audio_track_set_key_end_offset:

.. rst-class:: classref-method

void **audio_track_set_key_end_offset** **(** :ref:`int<class_int>` track_idx, :ref:`int<class_int>` key_idx, :ref:`float<class_float>` offset **)**

Sets the end offset of the key identified by ``key_idx`` to value ``offset``. The ``track_idx`` must be the index of an Audio Track.

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

----

.. _class_Animation_method_audio_track_set_key_start_offset:

.. rst-class:: classref-method

void **audio_track_set_key_start_offset** **(** :ref:`int<class_int>` track_idx, :ref:`int<class_int>` key_idx, :ref:`float<class_float>` offset **)**

Sets the start offset of the key identified by ``key_idx`` to value ``offset``. The ``track_idx`` must be the index of an Audio Track.

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

----

.. _class_Animation_method_audio_track_set_key_stream:

.. rst-class:: classref-method

void **audio_track_set_key_stream** **(** :ref:`int<class_int>` track_idx, :ref:`int<class_int>` key_idx, :ref:`Resource<class_Resource>` stream **)**

Sets the stream of the key identified by ``key_idx`` to value ``stream``. The ``track_idx`` must be the index of an Audio Track.

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

----

.. _class_Animation_method_audio_track_set_use_blend:

.. rst-class:: classref-method

void **audio_track_set_use_blend** **(** :ref:`int<class_int>` track_idx, :ref:`bool<class_bool>` enable **)**

Sets whether the track will be blended with other animations. If ``true``, the audio playback volume changes depending on the blend value.

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

----

.. _class_Animation_method_bezier_track_get_key_in_handle:

.. rst-class:: classref-method

:ref:`Vector2<class_Vector2>` **bezier_track_get_key_in_handle** **(** :ref:`int<class_int>` track_idx, :ref:`int<class_int>` key_idx **)** |const|

Returns the in handle of the key identified by ``key_idx``. The ``track_idx`` must be the index of a Bezier Track.

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

----

.. _class_Animation_method_bezier_track_get_key_out_handle:

.. rst-class:: classref-method

:ref:`Vector2<class_Vector2>` **bezier_track_get_key_out_handle** **(** :ref:`int<class_int>` track_idx, :ref:`int<class_int>` key_idx **)** |const|

Returns the out handle of the key identified by ``key_idx``. The ``track_idx`` must be the index of a Bezier Track.

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

----

.. _class_Animation_method_bezier_track_get_key_value:

.. rst-class:: classref-method

:ref:`float<class_float>` **bezier_track_get_key_value** **(** :ref:`int<class_int>` track_idx, :ref:`int<class_int>` key_idx **)** |const|

Returns the value of the key identified by ``key_idx``. The ``track_idx`` must be the index of a Bezier Track.

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

----

.. _class_Animation_method_bezier_track_insert_key:

.. rst-class:: classref-method

:ref:`int<class_int>` **bezier_track_insert_key** **(** :ref:`int<class_int>` track_idx, :ref:`float<class_float>` time, :ref:`float<class_float>` value, :ref:`Vector2<class_Vector2>` in_handle=Vector2(0, 0), :ref:`Vector2<class_Vector2>` out_handle=Vector2(0, 0) **)**

Inserts a Bezier Track key at the given ``time`` in seconds. The ``track_idx`` must be the index of a Bezier Track.

\ ``in_handle`` is the left-side weight of the added Bezier curve point, ``out_handle`` is the right-side one, while ``value`` is the actual value at this point.

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

----

.. _class_Animation_method_bezier_track_interpolate:

.. rst-class:: classref-method

:ref:`float<class_float>` **bezier_track_interpolate** **(** :ref:`int<class_int>` track_idx, :ref:`float<class_float>` time **)** |const|

Returns the interpolated value at the given ``time`` (in seconds). The ``track_idx`` must be the index of a Bezier Track.

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

----

.. _class_Animation_method_bezier_track_set_key_in_handle:

.. rst-class:: classref-method

void **bezier_track_set_key_in_handle** **(** :ref:`int<class_int>` track_idx, :ref:`int<class_int>` key_idx, :ref:`Vector2<class_Vector2>` in_handle, :ref:`float<class_float>` balanced_value_time_ratio=1.0 **)**

Sets the in handle of the key identified by ``key_idx`` to value ``in_handle``. The ``track_idx`` must be the index of a Bezier Track.

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

----

.. _class_Animation_method_bezier_track_set_key_out_handle:

.. rst-class:: classref-method

void **bezier_track_set_key_out_handle** **(** :ref:`int<class_int>` track_idx, :ref:`int<class_int>` key_idx, :ref:`Vector2<class_Vector2>` out_handle, :ref:`float<class_float>` balanced_value_time_ratio=1.0 **)**

Sets the out handle of the key identified by ``key_idx`` to value ``out_handle``. The ``track_idx`` must be the index of a Bezier Track.

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

----

.. _class_Animation_method_bezier_track_set_key_value:

.. rst-class:: classref-method

void **bezier_track_set_key_value** **(** :ref:`int<class_int>` track_idx, :ref:`int<class_int>` key_idx, :ref:`float<class_float>` value **)**

Sets the value of the key identified by ``key_idx`` to the given value. The ``track_idx`` must be the index of a Bezier Track.

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

----

.. _class_Animation_method_blend_shape_track_insert_key:

.. rst-class:: classref-method

:ref:`int<class_int>` **blend_shape_track_insert_key** **(** :ref:`int<class_int>` track_idx, :ref:`float<class_float>` time, :ref:`float<class_float>` amount **)**

Inserts a key in a given blend shape track. Returns the key index.

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

----

.. _class_Animation_method_blend_shape_track_interpolate:

.. rst-class:: classref-method

:ref:`float<class_float>` **blend_shape_track_interpolate** **(** :ref:`int<class_int>` track_idx, :ref:`float<class_float>` time_sec **)** |const|

Returns the interpolated blend shape value at the given time (in seconds). The ``track_idx`` must be the index of a blend shape track.

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

----

.. _class_Animation_method_clear:

.. rst-class:: classref-method

void **clear** **(** **)**

Clear the animation (clear all tracks and reset all).

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

----

.. _class_Animation_method_compress:

.. rst-class:: classref-method

void **compress** **(** :ref:`int<class_int>` page_size=8192, :ref:`int<class_int>` fps=120, :ref:`float<class_float>` split_tolerance=4.0 **)**

Compress the animation and all its tracks in-place. This will make :ref:`track_is_compressed<class_Animation_method_track_is_compressed>` return ``true`` once called on this **Animation**. Compressed tracks require less memory to be played, and are designed to be used for complex 3D animations (such as cutscenes) imported from external 3D software. Compression is lossy, but the difference is usually not noticeable in real world conditions.

\ **Note:** Compressed tracks have various limitations (such as not being editable from the editor), so only use compressed animations if you actually need them.

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

----

.. _class_Animation_method_copy_track:

.. rst-class:: classref-method

void **copy_track** **(** :ref:`int<class_int>` track_idx, :ref:`Animation<class_Animation>` to_animation **)**

Adds a new track to ``to_animation`` that is a copy of the given track from this animation.

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

----

.. _class_Animation_method_find_track:

.. rst-class:: classref-method

:ref:`int<class_int>` **find_track** **(** :ref:`NodePath<class_NodePath>` path, :ref:`TrackType<enum_Animation_TrackType>` type **)** |const|

Returns the index of the specified track. If the track is not found, return -1.

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

----

.. _class_Animation_method_get_track_count:

.. rst-class:: classref-method

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

Returns the amount of tracks in the animation.

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

----

.. _class_Animation_method_method_track_get_name:

.. rst-class:: classref-method

:ref:`StringName<class_StringName>` **method_track_get_name** **(** :ref:`int<class_int>` track_idx, :ref:`int<class_int>` key_idx **)** |const|

Returns the method name of a method track.

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

----

.. _class_Animation_method_method_track_get_params:

.. rst-class:: classref-method

:ref:`Array<class_Array>` **method_track_get_params** **(** :ref:`int<class_int>` track_idx, :ref:`int<class_int>` key_idx **)** |const|

Returns the arguments values to be called on a method track for a given key in a given track.

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

----

.. _class_Animation_method_position_track_insert_key:

.. rst-class:: classref-method

:ref:`int<class_int>` **position_track_insert_key** **(** :ref:`int<class_int>` track_idx, :ref:`float<class_float>` time, :ref:`Vector3<class_Vector3>` position **)**

Inserts a key in a given 3D position track. Returns the key index.

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

----

.. _class_Animation_method_position_track_interpolate:

.. rst-class:: classref-method

:ref:`Vector3<class_Vector3>` **position_track_interpolate** **(** :ref:`int<class_int>` track_idx, :ref:`float<class_float>` time_sec **)** |const|

Returns the interpolated position value at the given time (in seconds). The ``track_idx`` must be the index of a 3D position track.

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

----

.. _class_Animation_method_remove_track:

.. rst-class:: classref-method

void **remove_track** **(** :ref:`int<class_int>` track_idx **)**

Removes a track by specifying the track index.

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

----

.. _class_Animation_method_rotation_track_insert_key:

.. rst-class:: classref-method

:ref:`int<class_int>` **rotation_track_insert_key** **(** :ref:`int<class_int>` track_idx, :ref:`float<class_float>` time, :ref:`Quaternion<class_Quaternion>` rotation **)**

Inserts a key in a given 3D rotation track. Returns the key index.

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

----

.. _class_Animation_method_rotation_track_interpolate:

.. rst-class:: classref-method

:ref:`Quaternion<class_Quaternion>` **rotation_track_interpolate** **(** :ref:`int<class_int>` track_idx, :ref:`float<class_float>` time_sec **)** |const|

Returns the interpolated rotation value at the given time (in seconds). The ``track_idx`` must be the index of a 3D rotation track.

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

----

.. _class_Animation_method_scale_track_insert_key:

.. rst-class:: classref-method

:ref:`int<class_int>` **scale_track_insert_key** **(** :ref:`int<class_int>` track_idx, :ref:`float<class_float>` time, :ref:`Vector3<class_Vector3>` scale **)**

Inserts a key in a given 3D scale track. Returns the key index.

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

----

.. _class_Animation_method_scale_track_interpolate:

.. rst-class:: classref-method

:ref:`Vector3<class_Vector3>` **scale_track_interpolate** **(** :ref:`int<class_int>` track_idx, :ref:`float<class_float>` time_sec **)** |const|

Returns the interpolated scale value at the given time (in seconds). The ``track_idx`` must be the index of a 3D scale track.

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

----

.. _class_Animation_method_track_find_key:

.. rst-class:: classref-method

:ref:`int<class_int>` **track_find_key** **(** :ref:`int<class_int>` track_idx, :ref:`float<class_float>` time, :ref:`FindMode<enum_Animation_FindMode>` find_mode=0 **)** |const|

Finds the key index by time in a given track. Optionally, only find it if the approx/exact time is given.

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

----

.. _class_Animation_method_track_get_interpolation_loop_wrap:

.. rst-class:: classref-method

:ref:`bool<class_bool>` **track_get_interpolation_loop_wrap** **(** :ref:`int<class_int>` track_idx **)** |const|

Returns ``true`` if the track at ``track_idx`` wraps the interpolation loop. New tracks wrap the interpolation loop by default.

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

----

.. _class_Animation_method_track_get_interpolation_type:

.. rst-class:: classref-method

:ref:`InterpolationType<enum_Animation_InterpolationType>` **track_get_interpolation_type** **(** :ref:`int<class_int>` track_idx **)** |const|

Returns the interpolation type of a given track.

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

----

.. _class_Animation_method_track_get_key_count:

.. rst-class:: classref-method

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

Returns the number of keys in a given track.

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

----

.. _class_Animation_method_track_get_key_time:

.. rst-class:: classref-method

:ref:`float<class_float>` **track_get_key_time** **(** :ref:`int<class_int>` track_idx, :ref:`int<class_int>` key_idx **)** |const|

Returns the time at which the key is located.

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

----

.. _class_Animation_method_track_get_key_transition:

.. rst-class:: classref-method

:ref:`float<class_float>` **track_get_key_transition** **(** :ref:`int<class_int>` track_idx, :ref:`int<class_int>` key_idx **)** |const|

Returns the transition curve (easing) for a specific key (see the built-in math function :ref:`@GlobalScope.ease<class_@GlobalScope_method_ease>`).

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

----

.. _class_Animation_method_track_get_key_value:

.. rst-class:: classref-method

:ref:`Variant<class_Variant>` **track_get_key_value** **(** :ref:`int<class_int>` track_idx, :ref:`int<class_int>` key_idx **)** |const|

Returns the value of a given key in a given track.

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

----

.. _class_Animation_method_track_get_path:

.. rst-class:: classref-method

:ref:`NodePath<class_NodePath>` **track_get_path** **(** :ref:`int<class_int>` track_idx **)** |const|

Gets the path of a track. For more information on the path format, see :ref:`track_set_path<class_Animation_method_track_set_path>`.

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

----

.. _class_Animation_method_track_get_type:

.. rst-class:: classref-method

:ref:`TrackType<enum_Animation_TrackType>` **track_get_type** **(** :ref:`int<class_int>` track_idx **)** |const|

Gets the type of a track.

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

----

.. _class_Animation_method_track_insert_key:

.. rst-class:: classref-method

:ref:`int<class_int>` **track_insert_key** **(** :ref:`int<class_int>` track_idx, :ref:`float<class_float>` time, :ref:`Variant<class_Variant>` key, :ref:`float<class_float>` transition=1 **)**

Inserts a generic key in a given track. Returns the key index.

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

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.. _class_Animation_method_track_is_compressed:

.. rst-class:: classref-method

:ref:`bool<class_bool>` **track_is_compressed** **(** :ref:`int<class_int>` track_idx **)** |const|

Returns ``true`` if the track is compressed, ``false`` otherwise. See also :ref:`compress<class_Animation_method_compress>`.

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

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.. _class_Animation_method_track_is_enabled:

.. rst-class:: classref-method

:ref:`bool<class_bool>` **track_is_enabled** **(** :ref:`int<class_int>` track_idx **)** |const|

Returns ``true`` if the track at index ``track_idx`` is enabled.

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

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.. _class_Animation_method_track_is_imported:

.. rst-class:: classref-method

:ref:`bool<class_bool>` **track_is_imported** **(** :ref:`int<class_int>` track_idx **)** |const|

Returns ``true`` if the given track is imported. Else, return ``false``.

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

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.. _class_Animation_method_track_move_down:

.. rst-class:: classref-method

void **track_move_down** **(** :ref:`int<class_int>` track_idx **)**

Moves a track down.

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

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.. _class_Animation_method_track_move_to:

.. rst-class:: classref-method

void **track_move_to** **(** :ref:`int<class_int>` track_idx, :ref:`int<class_int>` to_idx **)**

Changes the index position of track ``track_idx`` to the one defined in ``to_idx``.

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

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.. _class_Animation_method_track_move_up:

.. rst-class:: classref-method

void **track_move_up** **(** :ref:`int<class_int>` track_idx **)**

Moves a track up.

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

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.. _class_Animation_method_track_remove_key:

.. rst-class:: classref-method

void **track_remove_key** **(** :ref:`int<class_int>` track_idx, :ref:`int<class_int>` key_idx **)**

Removes a key by index in a given track.

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

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.. _class_Animation_method_track_remove_key_at_time:

.. rst-class:: classref-method

void **track_remove_key_at_time** **(** :ref:`int<class_int>` track_idx, :ref:`float<class_float>` time **)**

Removes a key at ``time`` in a given track.

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

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.. _class_Animation_method_track_set_enabled:

.. rst-class:: classref-method

void **track_set_enabled** **(** :ref:`int<class_int>` track_idx, :ref:`bool<class_bool>` enabled **)**

Enables/disables the given track. Tracks are enabled by default.

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

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.. _class_Animation_method_track_set_imported:

.. rst-class:: classref-method

void **track_set_imported** **(** :ref:`int<class_int>` track_idx, :ref:`bool<class_bool>` imported **)**

Sets the given track as imported or not.

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

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.. _class_Animation_method_track_set_interpolation_loop_wrap:

.. rst-class:: classref-method

void **track_set_interpolation_loop_wrap** **(** :ref:`int<class_int>` track_idx, :ref:`bool<class_bool>` interpolation **)**

If ``true``, the track at ``track_idx`` wraps the interpolation loop.

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

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.. _class_Animation_method_track_set_interpolation_type:

.. rst-class:: classref-method

void **track_set_interpolation_type** **(** :ref:`int<class_int>` track_idx, :ref:`InterpolationType<enum_Animation_InterpolationType>` interpolation **)**

Sets the interpolation type of a given track.

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

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.. _class_Animation_method_track_set_key_time:

.. rst-class:: classref-method

void **track_set_key_time** **(** :ref:`int<class_int>` track_idx, :ref:`int<class_int>` key_idx, :ref:`float<class_float>` time **)**

Sets the time of an existing key.

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

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.. _class_Animation_method_track_set_key_transition:

.. rst-class:: classref-method

void **track_set_key_transition** **(** :ref:`int<class_int>` track_idx, :ref:`int<class_int>` key_idx, :ref:`float<class_float>` transition **)**

Sets the transition curve (easing) for a specific key (see the built-in math function :ref:`@GlobalScope.ease<class_@GlobalScope_method_ease>`).

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

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.. _class_Animation_method_track_set_key_value:

.. rst-class:: classref-method

void **track_set_key_value** **(** :ref:`int<class_int>` track_idx, :ref:`int<class_int>` key, :ref:`Variant<class_Variant>` value **)**

Sets the value of an existing key.

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

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.. _class_Animation_method_track_set_path:

.. rst-class:: classref-method

void **track_set_path** **(** :ref:`int<class_int>` track_idx, :ref:`NodePath<class_NodePath>` path **)**

Sets the path of a track. Paths must be valid scene-tree paths to a node and must be specified starting from the parent node of the node that will reproduce the animation. Tracks that control properties or bones must append their name after the path, separated by ``":"``.

For example, ``"character/skeleton:ankle"`` or ``"character/mesh:transform/local"``.

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

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.. _class_Animation_method_track_swap:

.. rst-class:: classref-method

void **track_swap** **(** :ref:`int<class_int>` track_idx, :ref:`int<class_int>` with_idx **)**

Swaps the track ``track_idx``'s index position with the track ``with_idx``.

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

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.. _class_Animation_method_value_track_get_update_mode:

.. rst-class:: classref-method

:ref:`UpdateMode<enum_Animation_UpdateMode>` **value_track_get_update_mode** **(** :ref:`int<class_int>` track_idx **)** |const|

Returns the update mode of a value track.

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

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.. _class_Animation_method_value_track_interpolate:

.. rst-class:: classref-method

:ref:`Variant<class_Variant>` **value_track_interpolate** **(** :ref:`int<class_int>` track_idx, :ref:`float<class_float>` time_sec **)** |const|

Returns the interpolated value at the given time (in seconds). The ``track_idx`` must be the index of a value track.

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

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.. _class_Animation_method_value_track_set_update_mode:

.. rst-class:: classref-method

void **value_track_set_update_mode** **(** :ref:`int<class_int>` track_idx, :ref:`UpdateMode<enum_Animation_UpdateMode>` mode **)**

Sets the update mode (see :ref:`UpdateMode<enum_Animation_UpdateMode>`) of a value track.

.. |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.)`
.. |bitfield| replace:: :abbr:`BitField (This value is an integer composed as a bitmask of the following flags.)`