OptionalidId of the ceiling, when the model sets one.
OptionalnameName of the ceiling, such as "ceiling-part-1".
OptionalareaArea of the ceiling's face, in square model units. Not set for an outline-only ceiling.
OptionalthicknessThickness of the ceiling slab, in model units.
OptionalpolygonCorner points of the ceiling's outline in plan, before it is raised to ceiling height.
OptionalshapesThe ceiling slab, or its outline at low detail.
One ceiling of a building model, such as a wing ceiling of the Zen Hideout: its outline points, area, thickness and shape.