Houdini 21.0 Nodes APEX nodes

guide::FindPrimaryAxis

Finds the primary axis of a joint.

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Since 21.0

Finds the primary/down axis of a joint based on the orientation from a parent to a child joint. This is only reliable if a consistent primary axis is used throughout the rig.

Inputs

geo: Geometry

The guide geometry to use to calculate the primary axis.

parent: String

The name of the parent joint, used as the starting point.

child: String

The name of the child joint. This is the joint that the parent looks at to get the primary axis. This joint does not have to be a child of the parent joint.

Outputs

axis: Vector3

The normalized output axis.

APEX nodes