When analyzing a curtain wall that has been referenced in revit (refer to the grasshopper screenshot), the extracted curves that represent the cells are always offset from the wall by default. it appears that this offset is set to the cross sectional centroid of of the mullions (refer to the rhino screenshot).
if you edit the type of mullion in revit and change the offset, it will change the location of the mullion, but not the offset of the cells produced in grasshopper.
Of course one could change the location of these curves with a little work in grasshopper, but I was wondering why it is offset like this, or if there is a way to extract the subdivisions of the curtain wall in a way that is a bit more precise.
