polyop.setFaceSmoothGroup <Poly poly> <facelist> <int smoothing_group> add:<boolean=false>Sets the smoothing groups for the specified faces.
The state of each bit in <smoothing_group> specifies whether the face belongs to the corresponding smoothing group.
If <add> is true , <smoothing_group> is added to the existing smoothing group data specified for each face.
If <add> is false , the existing smoothing group data is overwritten.
polyop.getFaceSmoothGroup <Poly poly> <int face>Returns the smoothing group data for the specified face as an integer.
The state of each bit in the result specifies whether the face belongs to the corresponding smoothing group.