PS:Apartment

Each element of an apartment are defined in three dimensions (1 unit = 1 mm) as abstract wall, window, 'door operators. Then, the operators are redefined for each view partly using fills and partly strokes. Finally, an isometric view is created. The transformation to isometric is rather easy: The y-dimnsions stays, the z and the x dimensions are transformed in 30 degrees, which simply is 0.75 horizontally and 0.5 vertically. The order of the elements (foreground - background) had to be defined manually

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