Generate replaces the previous generated set; SmartBoxes you placed by hand are left alone.

Built on the selected closed shape, or the largest one on the floor.

How far the ceiling hangs below the wall head. The wall above it is the parapet.

A count spread around the perimeter, as in the Blueprint — not a spacing.

Cell sizes, not counts — a longer wall takes more bays, not wider ones. Walls under 3 m stay solid.

On, the openings take the edge count below and the ceiling is cut too. Off, they are rectangles and flatten further.

Every opening is drawn somewhere between the two, which is where the unevenness comes from. The largest is brought down if it and its frame will not fit the wall height, and the build says so when it is.

Gap between one surround and the next. NEGATIVE lets them overlap and bore into each other, which is what the Blueprint does. Raising the count alone will not crowd a wall — the spacing is what holds them apart, so lower it as well.

How far an opening may hang off the end of a wall. Raised, one can sit on a corner and cut through into the return wall.

The outer surround. Where an opening falls in the size band decides where in this one its frame lands, so the biggest openings take the thickest frames. The bead around the glass is a fixed width and does not follow.

3 edges is a triangle, 4 a square, 6 a hexagon, 64 a circle.

0 tracks the wall, which makes it a full-height portal.

One wall, several as 0,2 — or all. Walls are numbered anticlockwise from the first corner of the shape.

Full height, with a surround standing proud of the wall face. The wall it lands on stays unglazed, and the scatter keeps off that stretch of it. Nothing is punched if the opening and its frame will not fit between the corners.

Off leaves the gallery open to the sky — no ceiling, no roof light, and nothing overhead to bore rooflights through.

Materials

Glass tints the panes in the generated openings only. Left alone it is the gallery's own, not the project's window glazing.