mesh.AutomaticHexahedralization(0.5)
localAlgo = mesh.Segment(faces[0])
localAlgo.NumberOfSegments( 11 )
-mesh.Compute()
+if not mesh.Compute(): raise Exception("Error when computing Mesh")
group = mesh.Group( faces[1] )
vec = geom_builder.MakeVectorDXDYDZ( 1, 1, 1 )