code: def setPoints(self, pts):
          
          vpts = vtk.vtkPoints()
          vpts.SetData(numpy_to_vtk(pts, deep=True))
          self.poly.SetPoints(vpts)
          self.poly.GetPoints().Modified()
          # reset actor to identity matrix position/rotation:
          self.PokeMatrix(vtk.vtkMatrix4x4())
          return self
docs: Set specific points coordinates in mesh. Input is a python list.
          Actor transformation is reset to its mesh position/orientation.
  
          :param list pts: new coordinates of mesh vertices.