https://gitlab.kitware.com/vtk/vtk/blob/master/Filters/Sources/vtkSuperquadricSource.cxx
Based on "Rigid physically based superquadrics", A. H. Barr,
in "Graphics Gems III", David Kirk, ed., Academic Press, 1992.
https://gitlab.kitware.com/vtk/vtk/blob/master/Filters/Sources/vtkSuperquadricSource.cxx
Based on "Rigid physically based superquadrics", A. H. Barr,
in "Graphics Gems III", David Kirk, ed., Academic Press, 1992.