The molecules would be, ideally, convex hulls. I would define occupied space as the hull in the case. At the moment I would consider the case you presented as an overlap of the two molecules. I merely wish to be able to see if a line (plane) like this is doable 
    x  |  o
  x   x|o   o
    x  | o o

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In reply to Re^2: Confused about 3D geometry / algebra by tomdbs98
in thread Confused about 3D geometry / algebra by tomdbs98

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