OESetSurfaceArcFxn

OESetSurfaceArcFxn(mol: Union[OEGraphMol,OEMol,OEQMol],
                   atom: OEAtomBase, func: OESurfaceArcFxnBase) -> bool

Attaches the arc drawing functor to the given atom.

mol: The molecule the atom belongs to.
atom: The atom to which the functor will be attached.
func: The functor that will be used to draw the arc segment(s) of the molecule surface that correspond(s) to the given atom when the OEDraw2DSurface function in invoked.