godot-docs/classes/class_rootmotionview.rst

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.. _class_RootMotionView:

RootMotionView
==============

**Inherits:** :ref:`VisualInstance3D<class_VisualInstance3D>` **<** :ref:`Node3D<class_Node3D>` **<** :ref:`Node<class_Node>` **<** :ref:`Object<class_Object>`

Editor-only helper for setting up root motion in :ref:`AnimationMixer<class_AnimationMixer>`.

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

*Root motion* refers to an animation technique where a mesh's skeleton is used to give impulse to a character. When working with 3D animations, a popular technique is for animators to use the root skeleton bone to give motion to the rest of the skeleton. This allows animating characters in a way where steps actually match the floor below. It also allows precise interaction with objects during cinematics. See also :ref:`AnimationMixer<class_AnimationMixer>`.

\ **Note:** **RootMotionView** is only visible in the editor. It will be hidden automatically in the running project.

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Tutorials
---------

- `Using AnimationTree - Root motion <../tutorials/animation/animation_tree.html#root-motion>`__

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Properties
----------

.. table::
   :widths: auto

   +---------------------------------+---------------------------------------------------------------------+---------------------------+
   | :ref:`NodePath<class_NodePath>` | :ref:`animation_path<class_RootMotionView_property_animation_path>` | ``NodePath("")``          |
   +---------------------------------+---------------------------------------------------------------------+---------------------------+
   | :ref:`float<class_float>`       | :ref:`cell_size<class_RootMotionView_property_cell_size>`           | ``1.0``                   |
   +---------------------------------+---------------------------------------------------------------------+---------------------------+
   | :ref:`Color<class_Color>`       | :ref:`color<class_RootMotionView_property_color>`                   | ``Color(0.5, 0.5, 1, 1)`` |
   +---------------------------------+---------------------------------------------------------------------+---------------------------+
   | :ref:`float<class_float>`       | :ref:`radius<class_RootMotionView_property_radius>`                 | ``10.0``                  |
   +---------------------------------+---------------------------------------------------------------------+---------------------------+
   | :ref:`bool<class_bool>`         | :ref:`zero_y<class_RootMotionView_property_zero_y>`                 | ``true``                  |
   +---------------------------------+---------------------------------------------------------------------+---------------------------+

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----

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

.. _class_RootMotionView_property_animation_path:

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:ref:`NodePath<class_NodePath>` **animation_path** = ``NodePath("")``

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

- void **set_animation_path** **(** :ref:`NodePath<class_NodePath>` value **)**
- :ref:`NodePath<class_NodePath>` **get_animation_path** **(** **)**

Path to an :ref:`AnimationMixer<class_AnimationMixer>` node to use as a basis for root motion.

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----

.. _class_RootMotionView_property_cell_size:

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

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

- void **set_cell_size** **(** :ref:`float<class_float>` value **)**
- :ref:`float<class_float>` **get_cell_size** **(** **)**

The grid's cell size in 3D units.

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----

.. _class_RootMotionView_property_color:

.. rst-class:: classref-property

:ref:`Color<class_Color>` **color** = ``Color(0.5, 0.5, 1, 1)``

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

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

The grid's color.

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----

.. _class_RootMotionView_property_radius:

.. rst-class:: classref-property

:ref:`float<class_float>` **radius** = ``10.0``

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

- void **set_radius** **(** :ref:`float<class_float>` value **)**
- :ref:`float<class_float>` **get_radius** **(** **)**

The grid's radius in 3D units. The grid's opacity will fade gradually as the distance from the origin increases until this :ref:`radius<class_RootMotionView_property_radius>` is reached.

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.. _class_RootMotionView_property_zero_y:

.. rst-class:: classref-property

:ref:`bool<class_bool>` **zero_y** = ``true``

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

- void **set_zero_y** **(** :ref:`bool<class_bool>` value **)**
- :ref:`bool<class_bool>` **get_zero_y** **(** **)**

If ``true``, the grid's points will all be on the same Y coordinate (*local* Y = 0). If ``false``, the points' original Y coordinate is preserved.

.. |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.)`