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godot-docs/classes/class_splineik3d.rst
2025-11-08 03:26:56 +00:00

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.. DO NOT EDIT THIS FILE!!!
.. Generated automatically from Godot engine sources.
.. Generator: https://github.com/godotengine/godot/tree/master/doc/tools/make_rst.py.
.. XML source: https://github.com/godotengine/godot/tree/master/doc/classes/SplineIK3D.xml.
.. _class_SplineIK3D:
SplineIK3D
==========
**Inherits:** :ref:`ChainIK3D<class_ChainIK3D>` **<** :ref:`IKModifier3D<class_IKModifier3D>` **<** :ref:`SkeletonModifier3D<class_SkeletonModifier3D>` **<** :ref:`Node3D<class_Node3D>` **<** :ref:`Node<class_Node>` **<** :ref:`Object<class_Object>`
A :ref:`SkeletonModifier3D<class_SkeletonModifier3D>` for aligning bones along a :ref:`Path3D<class_Path3D>`.
.. rst-class:: classref-introduction-group
Description
-----------
A :ref:`SkeletonModifier3D<class_SkeletonModifier3D>` for aligning bones along a :ref:`Path3D<class_Path3D>`. The smoothness of the fitting depends on the :ref:`Curve3D.bake_interval<class_Curve3D_property_bake_interval>`.
If you want the :ref:`Path3D<class_Path3D>` to attach to a specific bone, it is recommended to place a :ref:`ModifierBoneTarget3D<class_ModifierBoneTarget3D>` before the **SplineIK3D** in the :ref:`SkeletonModifier3D<class_SkeletonModifier3D>` list (children of the :ref:`Skeleton3D<class_Skeleton3D>`), and then place a :ref:`Path3D<class_Path3D>` as the :ref:`ModifierBoneTarget3D<class_ModifierBoneTarget3D>`'s child.
Bone twist is determined based on the :ref:`Curve3D.get_point_tilt()<class_Curve3D_method_get_point_tilt>`.
If the root bone joint and the start point of the :ref:`Curve3D<class_Curve3D>` are separated, it assumes that there is a linear line segment between them. This means that the vector pointing toward the start point of the :ref:`Curve3D<class_Curve3D>` takes precedence over the shortest intersection point along the :ref:`Curve3D<class_Curve3D>`.
If the end bone joint exceeds the path length, it is bent as close as possible to the end point of the :ref:`Curve3D<class_Curve3D>`.
.. rst-class:: classref-reftable-group
Properties
----------
.. table::
:widths: auto
+-----------------------+---------------------------------------------------------------+-------+
| :ref:`int<class_int>` | :ref:`setting_count<class_SplineIK3D_property_setting_count>` | ``0`` |
+-----------------------+---------------------------------------------------------------+-------+
.. rst-class:: classref-reftable-group
Methods
-------
.. table::
:widths: auto
+---------------------------------+-------------------------------------------------------------------------------------------------------------------------------------------+
| :ref:`NodePath<class_NodePath>` | :ref:`get_path_3d<class_SplineIK3D_method_get_path_3d>`\ (\ index\: :ref:`int<class_int>`\ ) |const| |
+---------------------------------+-------------------------------------------------------------------------------------------------------------------------------------------+
| :ref:`int<class_int>` | :ref:`get_tilt_fade_in<class_SplineIK3D_method_get_tilt_fade_in>`\ (\ index\: :ref:`int<class_int>`\ ) |const| |
+---------------------------------+-------------------------------------------------------------------------------------------------------------------------------------------+
| :ref:`int<class_int>` | :ref:`get_tilt_fade_out<class_SplineIK3D_method_get_tilt_fade_out>`\ (\ index\: :ref:`int<class_int>`\ ) |const| |
+---------------------------------+-------------------------------------------------------------------------------------------------------------------------------------------+
| :ref:`bool<class_bool>` | :ref:`is_tilt_enabled<class_SplineIK3D_method_is_tilt_enabled>`\ (\ index\: :ref:`int<class_int>`\ ) |const| |
+---------------------------------+-------------------------------------------------------------------------------------------------------------------------------------------+
| |void| | :ref:`set_path_3d<class_SplineIK3D_method_set_path_3d>`\ (\ index\: :ref:`int<class_int>`, path_3d\: :ref:`NodePath<class_NodePath>`\ ) |
+---------------------------------+-------------------------------------------------------------------------------------------------------------------------------------------+
| |void| | :ref:`set_tilt_enabled<class_SplineIK3D_method_set_tilt_enabled>`\ (\ index\: :ref:`int<class_int>`, enabled\: :ref:`bool<class_bool>`\ ) |
+---------------------------------+-------------------------------------------------------------------------------------------------------------------------------------------+
| |void| | :ref:`set_tilt_fade_in<class_SplineIK3D_method_set_tilt_fade_in>`\ (\ index\: :ref:`int<class_int>`, size\: :ref:`int<class_int>`\ ) |
+---------------------------------+-------------------------------------------------------------------------------------------------------------------------------------------+
| |void| | :ref:`set_tilt_fade_out<class_SplineIK3D_method_set_tilt_fade_out>`\ (\ index\: :ref:`int<class_int>`, size\: :ref:`int<class_int>`\ ) |
+---------------------------------+-------------------------------------------------------------------------------------------------------------------------------------------+
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.. rst-class:: classref-descriptions-group
Property Descriptions
---------------------
.. _class_SplineIK3D_property_setting_count:
.. rst-class:: classref-property
:ref:`int<class_int>` **setting_count** = ``0`` :ref:`🔗<class_SplineIK3D_property_setting_count>`
.. rst-class:: classref-property-setget
- |void| **set_setting_count**\ (\ value\: :ref:`int<class_int>`\ )
- :ref:`int<class_int>` **get_setting_count**\ (\ )
The number of settings.
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----
.. rst-class:: classref-descriptions-group
Method Descriptions
-------------------
.. _class_SplineIK3D_method_get_path_3d:
.. rst-class:: classref-method
:ref:`NodePath<class_NodePath>` **get_path_3d**\ (\ index\: :ref:`int<class_int>`\ ) |const| :ref:`🔗<class_SplineIK3D_method_get_path_3d>`
Returns the node path of the :ref:`Path3D<class_Path3D>` which is describing the path.
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----
.. _class_SplineIK3D_method_get_tilt_fade_in:
.. rst-class:: classref-method
:ref:`int<class_int>` **get_tilt_fade_in**\ (\ index\: :ref:`int<class_int>`\ ) |const| :ref:`🔗<class_SplineIK3D_method_get_tilt_fade_in>`
Returns the tilt interpolation method used between the root bone and the start point of the :ref:`Curve3D<class_Curve3D>` when they are apart. See also :ref:`set_tilt_fade_in()<class_SplineIK3D_method_set_tilt_fade_in>`.
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.. _class_SplineIK3D_method_get_tilt_fade_out:
.. rst-class:: classref-method
:ref:`int<class_int>` **get_tilt_fade_out**\ (\ index\: :ref:`int<class_int>`\ ) |const| :ref:`🔗<class_SplineIK3D_method_get_tilt_fade_out>`
Returns the tilt interpolation method used between the end bone and the end point of the :ref:`Curve3D<class_Curve3D>` when they are apart. See also :ref:`set_tilt_fade_out()<class_SplineIK3D_method_set_tilt_fade_out>`.
.. rst-class:: classref-item-separator
----
.. _class_SplineIK3D_method_is_tilt_enabled:
.. rst-class:: classref-method
:ref:`bool<class_bool>` **is_tilt_enabled**\ (\ index\: :ref:`int<class_int>`\ ) |const| :ref:`🔗<class_SplineIK3D_method_is_tilt_enabled>`
Returns if the tilt property of the :ref:`Curve3D<class_Curve3D>` affects the bone twist.
.. rst-class:: classref-item-separator
----
.. _class_SplineIK3D_method_set_path_3d:
.. rst-class:: classref-method
|void| **set_path_3d**\ (\ index\: :ref:`int<class_int>`, path_3d\: :ref:`NodePath<class_NodePath>`\ ) :ref:`🔗<class_SplineIK3D_method_set_path_3d>`
Sets the node path of the :ref:`Path3D<class_Path3D>` which is describing the path.
.. rst-class:: classref-item-separator
----
.. _class_SplineIK3D_method_set_tilt_enabled:
.. rst-class:: classref-method
|void| **set_tilt_enabled**\ (\ index\: :ref:`int<class_int>`, enabled\: :ref:`bool<class_bool>`\ ) :ref:`🔗<class_SplineIK3D_method_set_tilt_enabled>`
Sets if the tilt property of the :ref:`Curve3D<class_Curve3D>` should affect the bone twist.
.. rst-class:: classref-item-separator
----
.. _class_SplineIK3D_method_set_tilt_fade_in:
.. rst-class:: classref-method
|void| **set_tilt_fade_in**\ (\ index\: :ref:`int<class_int>`, size\: :ref:`int<class_int>`\ ) :ref:`🔗<class_SplineIK3D_method_set_tilt_fade_in>`
If ``size`` is greater than ``0``, the tilt is interpolated between ``size`` start bones from the start point of the :ref:`Curve3D<class_Curve3D>` when they are apart.
If ``size`` is equal ``0``, the tilts between the root bone head and the start point of the :ref:`Curve3D<class_Curve3D>` are unified with a tilt of the start point of the :ref:`Curve3D<class_Curve3D>`.
If ``size`` is less than ``0``, the tilts between the root bone and the start point of the :ref:`Curve3D<class_Curve3D>` are ``0.0``.
.. rst-class:: classref-item-separator
----
.. _class_SplineIK3D_method_set_tilt_fade_out:
.. rst-class:: classref-method
|void| **set_tilt_fade_out**\ (\ index\: :ref:`int<class_int>`, size\: :ref:`int<class_int>`\ ) :ref:`🔗<class_SplineIK3D_method_set_tilt_fade_out>`
If ``size`` is greater than ``0``, the tilt is interpolated between ``size`` end bones from the end point of the :ref:`Curve3D<class_Curve3D>` when they are apart.
If ``size`` is equal ``0``, the tilts between the end bone tail and the end point of the :ref:`Curve3D<class_Curve3D>` are unified with a tilt of the end point of the :ref:`Curve3D<class_Curve3D>`.
If ``size`` is less than ``0``, the tilts between the end bone and the end point of the :ref:`Curve3D<class_Curve3D>` are ``0.0``.
.. |virtual| replace:: :abbr:`virtual (This method should typically be overridden by the user to have any effect.)`
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.. |const| replace:: :abbr:`const (This method has no side effects. It doesn't modify any of the instance's member variables.)`
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.. |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.)`
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.. |bitfield| replace:: :abbr:`BitField (This value is an integer composed as a bitmask of the following flags.)`
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