--- node: - - 0.0 - 0.0 - - 30.0 - 1.5 - - 29.0 - 28.0 - - 0.0 - 27.0 perimeter: a: private b: private c: ~ d: ~ type: O rotation: 0 height: 3 elevation: 0.0 wall_inner: 0.08 wall_outer: 0.25