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.. _class_CCDIK3D:

CCDIK3D
=======

**Inherits:** :ref:`IterateIK3D<class_IterateIK3D>` **<** :ref:`ChainIK3D<class_ChainIK3D>` **<** :ref:`IKModifier3D<class_IKModifier3D>` **<** :ref:`SkeletonModifier3D<class_SkeletonModifier3D>` **<** :ref:`Node3D<class_Node3D>` **<** :ref:`Node<class_Node>` **<** :ref:`Object<class_Object>`

Rotation based cyclic coordinate descent inverse kinematics solver.

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

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

**CCDIK3D** is rotation based IK, enabling fast and effective tracking even with large joint rotations. It's especially suitable for chains with limitations, providing smoother and more stable target tracking compared to :ref:`FABRIK3D<class_FABRIK3D>`.

The resulting twist around the forward vector will always be kept from the previous pose.

\ **Note:** When the target is close to the root, it can cause unnatural movement, including joint flips and oscillations.

.. |virtual| replace:: :abbr:`virtual (This method should typically be overridden by the user to have any effect.)`
.. |required| replace:: :abbr:`required (This method is required to be overridden when extending its base class.)`
.. |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.)`
.. |void| replace:: :abbr:`void (No return value.)`