Houdini 21.0 Character KineFX

Transform Driver

Creates, parents, and constrains TransformObject nodes.

Since 20.0

This is a versatile component that can create, parent, and constrain TransformObject nodes in a rig.

See rigging a simple geometry and rigging a character for example uses of this component.

Parameters

Setups

The number of transform drivers. Click beside Setups to create multiple drivers.

Settings

Use Translate

When turned on, the translation of the driven node is affected by the driver.

Use Rotate

When turned on, the rotation of the driven node is affected by the driver.

Use Scale

When turned on, the scale of the driven node is affected by the driver.

Ignore Offset

When turned on, calculates offsets to keep the driven node at its world space position. When turned off, the driven is constrained to the driver’s position without offsets.

Offset Controls

When turned on, creates controls at the Driven Transforms, so you can move the driven nodes around.

Parent Constraint

When turned on, allows you to move the Driven Transforms around.

Driven

Driven Transforms

The TransformObject nodes driven by the Driver. This parameter accepts APEX path patterns, so you can specify tags in this field, for example, #<tag>.

Control

Driver

The name of the new/existing driver.

Driver Guide

When creating a new driver, this is the position of the driver. If driverguide is empty, the driver is placed at the origin. If the driver already exists in the hierarchy, the driver’s position is used, and driverguide is ignored.

This parameter accepts APEX path patterns, so you can specify tags in this field.

Driver Parent

The parent of the driver.

Make Control

When turned on, creates a control for the driver.

Promote T

When turned on, promotes the translate component of the driver. This allows you to see and adjust the driver’s translation in the animate state. See APEX graph controls for more information on promoting parameters.

Promote R

When turned on, promotes the rotate component of the driver. This allows you to see and adjust the driver’s rotation in the animate state.

Promote S

When turned on, promotes the scale component of the driver. This allows you to see and adjust the driver’s scale in the animate state.

Rord

The rotation order of the driver.

Xord

The transformation order of the driver.

Mode

Specifies how to apply the offset transformation to the driver.

Offset Transform

The initial translation of the driver.

Offset Rotate

The initial rotation of the driver.

Offset Scale

The initial scale of the driver.

Tags

Tags

The tags to add to the driver node created by this component.

Shape

The APEX Configure Controls SOP provides more options for changing the look of the controls.

Shape

The shape of the driver’s control. It can be set to any of the built-in APEX control shapes.

Color

The color of the driver’s control shape.

Translate

The translation of the driver’s control shape. This only affects the control shape, and not the actual TransformObject transforms.

Rotate

The rotation of the driver’s control shape. This only affects the control shape, and not the actual TransformObject transforms.

Scale

The scale of the driver’s control shape. This only affects the control shape, and not the actual TransformObject transforms.

See also

KineFX

Overview

Preparing character elements

Rigging with APEX graphs

Building rig graphs with APEX Script

Rigging with rig components

Animating in the viewport

SOP-based animation

Deformation

Animation retargeting

Pre-H20

Panes

Appendix