units 2 2 1 0 0 zoom e layer m walls c 7 walls layer m windows c 4 windows layer m fence c 8 fence layer s walls building outline approx 20m x 8m rectang 0 0 20000 8000 upper cladding split line line 0 4000 20000 4000 right vertical panel line 15000 4000 15000 8000 roof edge line 0 8000 20000 8000 windows top row layer s windows rectang 2000 5000 3500 7000 rectang 4500 5000 6000 7000 rectang 7000 5000 8500 7000 rectang 9500 5000 11000 7000 rectang 12000 5000 13500 7000 ground strip windows rectang 1000 2000 5000 3000 right lower windows rectang 15500 1500 17000 3000 fence line layer s fence line 2000 0 0 0 array rectang 1800 0 1700 2000 1 20 800 zoom e