This page has been translated automatically.
Interface Overview
Assets Workflow
Settings and Preferences
Adjusting Node Parameters
Setting Up Materials
Setting Up Properties
Landscape Tool
Using Editor Tools for Specific Tasks
Setting Up Development Environment
Usage Examples
UUSL (Unified UNIGINE Shader Language)
File Formats
Rebuilding the Engine and Tools
Double Precision Coordinates
Common Functionality
Controls-Related Classes
Engine-Related Classes
Filesystem Functionality
GUI-Related Classes
Math Functionality
Node-Related Classes
Networking Functionality
Pathfinding-Related Classes
Physics-Related Classes
Plugins-Related Classes
CIGI Client Plugin
Rendering-Related Classes
Warning! This version of documentation is OUTDATED, as it describes an older SDK version! Please switch to the documentation for the latest SDK version.
Warning! This version of documentation describes an old SDK version which is no longer supported! Please upgrade to the latest SDK version.


A   pivot is a node that serves as a pivot point for its child nodes and enables to easily control transformation (mainly rotation) of this group of nodes. It has virtually zero influence on performance and shares all common options that other nodes have.

The pivot node should be used when you need to set a specific pivot point for a node or a group of nodes. For example, a pivot node can be used to add a pivot point for:

  • Landing gears of an aircraft so that they are geared down and up relative to this point.
  • Propeller blades of a helicopter so that they are rotated relative to this point.

Propeller Blades are Rotated Relative to a Pivot Point

The pivot node has the pivot and local transformation matrices. The pivot transformation matrix sets transformation of the basis of rotation (the pivot point) of child nodes. The local transformation matrix sets local transformation of child nodes relative to the pivot point. Both matrices can be edited in the Node Pivot tab of the Parameters window of UnigineEditor.

See also

  • A NodePivot class to edit pivots via UnigineScript

Adding a Pivot Node

To add a new pivot node via UnigineEditor, click Create -> Node -> Pivot on the Menu bar and then click somewhere in the scene to add the pivot node.

Place a Pivot Node

By default, the pivot and local transformation matrices of the added node are equal to identity matrices. You can change them in the Node Pivot tab of the Parameters window.

Then you should add the child nodes to the pivot node: select the required nodes and drag the nodes inside the pivot node:

Adding Dynamic Meshes as Child Nodes to the Pivot Node

Editing a Pivot Node

Editing the pivot node implies changing its pivot and local transformation matrices in the Node Pivot tab of the Parameters window.

Pivot Node Settings

You should distinguish between the concepts of the pivot node and the pivot point: changing transformation of the pivot point doesn't affect the pivot node and vice versa. By default, their transformations coincide.

Transformation of the pivot node is edited in the Node tab of the Parameters window. To edit the pivot point transformation, you should select the pivot node and switch to the Node Pivot tab. As a result, 2 manipulators will appear: the smaller manipulator for the pivot point and the bigger one for the pivot node. To change the pivot point transformation press Edit Pivot and change the required values on the Node Pivot tab or transform the manipulator.

Changing Position of the Pivot Point Manipulator
Pivot Node and Pivot Point with Different Transformations

Changing the local transformation of the child nodes doesn't require pressing Edit Pivot: you can simply change the required values on the Node Pivot tab. You can also move, rotate or scale the pivot point manipulator by using the required transformation mode. For example:

Child Nodes Rotating Relative to Pivot Point

If the Edit pPvot button is pressed, changing the pivot point manipulator will change the pivot point transformation. Otherwise, the local transformation of the child nodes will be changed.
Last update: 2018-08-10
Build: ()