Related materials into families with matching surface characteristics.

Windows, shaded entrances and reflective surfaces. The collision outline follows the primary shape and excludes decorative surface details. Objects with repeated dimensions can form a longer boundary.

Visible geometry. The coastal district contains warehouses, loading platforms and narrow service roads. Concrete supports connect the elevated walkway to the foundation beside the railway. A small building near the station.

Small workshop. A stone bridge crosses the channel and connects the residential area to the foundation beside the plaza. The catalogue groups related materials into families with matching.