World-space point snapping — grid, guides, or any consumer rule.
Sourced by <SceneCanvas> from its toolOptions.snapPoint. Actions apply
it to the coords they ingest so the live preview and the committed
geometry agree; insertAction snaps the drag's start and current point.
Optional: when the dep is absent, actions treat it as identity.
World-space point snapping — grid, guides, or any consumer rule.
Sourced by
<SceneCanvas>from itstoolOptions.snapPoint. Actions apply it to the coords they ingest so the live preview and the committed geometry agree;insertActionsnaps the drag's start and current point.Optional: when the dep is absent, actions treat it as identity.