RoomPlan from the ARKit Swift API uses the camera and LiDAR scanner on recent iPhones and iPads to create a 3D floor plan of a room, including key characteristics such as dimensions and types of furniture. RoomPlan seems to be able to deal with several traditionally difficult situations, including the mirror seen above, but also messy spaces, open and closed doors, windows, and generally complex architecture.
Vaulted ceilings, wall openings, multifloor areas like you might find in foyers were all a bit too difficult for RoomPlan to correctly digest. RoomPlan seems to at least autocorrect to some degree based on some assumptions of how things might best fit together. Apple says it outputs in USD or USDZ file formats which include dimensions of each component recognized in the room, such as walls or cabinets, as well as the type of furniture detected.
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