Datum
Status: Implemented

Datum creates a lightweight reference group that exposes orthogonal XY/XZ/YZ planes for downstream selections.
Inputs
transform– position, rotation, and scale applied to the three reference planes.
Behaviour
- The feature emits a
THREE.Groupnamed after the feature ID with three plane meshes (XY,XZ,YZ). - No references are inherited from other geometry yet; the datum always starts at the world origin before the supplied transform is applied.
- Each plane is selectable through the
PLANEselection filter so other features (e.g. sketches) can lock to the datum.