Device Floorplan 0.7.2

Daylight that spreads through the home. Closed shutters now darken their room and the rooms around it:

• A window always lets daylight in, a shutter by how far it's open, a door doesn't count.
• A room without windows or shutters (a corridor, an entrance) takes the average of the rooms its shape touches or overlaps. A gap between room shapes is a wall: no light passes. To share light through a doorway, let the two shapes touch there.
• One even shading layer: no extra darkness where room shapes overlap, soft between rooms, crisp at walls and outside.

Two sensors, one bar. Put a window sensor and a shutter on the same spot (no need to bond) and draw the bar once: the other gets a twin bar beside it, the same length, moving with it. Switch side decides which is on top or outside; Next to… pairs sensors placed apart; bar ends snap to each other while you drag.