Have multiple floors buildings, the shape is rectangle. I have the coordinates of four angles,floors, rooms of each floors. The floorplan is to split the floor to equal grids. The model should contain the shell of the whole building(cube) and entities each rooms. Any idea for creating the buildings models programmly or any references?
Maybe you can take something out of it? 
A reference:
another reference
using csg you can build shapes with booleans. the library is called three-bvh-csg. in vanilla it won’t be as easy as the sandbox above but manageable nonetheless.
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As newbie of threejs, thanks the above answers, I will research on the references.
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