Computing surface yields unexpected error

Hello,

I'm trying to compute a surface for a CG pure POPC membrane.
In pseudocode, the procedure I'm following looks like:

```
import MDAnalysis
from memsurfer import Membrane

u = MDAnalysis.Universe(pdb_file, xtc_file)

frame = u.trajectory[-1]

atoms = u.select_atoms('name PO4')
bbox = np.zeros((2,3))
bbox[1,:] = frame.dimensions[:3]

membrane = Membrane.compute(atoms.positions, atoms.resnames, bbox = bbox, periodic = True)
```

Which yields the following error
```
terminate called after throwing an instance of 'std::length_error'
what(): cannot create std::vector larger than max_size()
```

It looks like it has something to do with the box dimensions (maybe?) but I have no Idea how to fix it.

I also tried computing a surface from a random distribution of points within the same bounds as my membrane, and get the same error.

Thank you very much in advance for your help!

Start by reproducing the supplied Membrane.compute call with the POPC coordinates, periodic bounding box, and random points, then inspect the box-dimension and periodic-processing path that produces std::length_error. Done means the same inputs no longer terminate with the exception and surface computation completes or reports a clear input error.

Written by the indexing model from the issue text.