Houdini 20.5 Character KineFX

groomdeform

Attaches a hair, fur or feather groom to a character’s animated skin shape.

Since 20.5
This feature is still under development. The current functionality is unfinished and subject to change, and may have thin or no documentation. Please bear this in mind when using it.

This component attaches a hair, fur or feather groom to a character’s animated skin shape. This relies on the APEX Add Groom SOP to add a set of mandatory groom shapes as well as a groom skeleton first. APEX Add Groom already includes & executes this component, so it isn’t necessary to use it separately for the default workflow.

However, you may disable Set up Rig on the APEX Add Groom and use this component afterwards instead. This allows you to make additional tweaks to the character between the APEX Add Groom and Guide Deform SOP. You can, as an example for such a tweak, manipulate guide properties on the groom skeleton to gain more granular control over the control shapes created for the groom. The default values of the various name parameters below match the APEX Add Groom’s defaults for the required elements and usually don’t need any changes.

Parameters

basegeoname

The name of the character’s skin shape

groomname

The name of the groom shape. This should be a shape containing the groom curves.

Note

Both, this component and groomsurfacename are required for feather grooms.

groomsurfacesname

The name of the groom surfaces. Usually used with Feathers.

groomskelname

The name of the groom skeleton.

nodeprefix

All apex nodes will be created with this prefix, making it easy to identify them afterwards.

skinnormalattrib

A point or vertex normal attribute on the skin. Used to construct a stable attachment transform for groom curves.

skintangentattrib

A point or vertex tangent attribute on the skin. Used to construct a stable attachment transform for groom curves.

See also

KineFX

Preparing character inputs

Rigging with rig components

Rigging with APEX graphs

Building graphs with APEX Script

Animating in the viewport

Technical Animation

Deformation

Animation Retargeting

Pre-H20

Panes

Appendix