text: """Cut a mesh with another mesh"""
  from vedo import *
  
  embryo = load(datadir+"embryo.tif").isosurface(30).normalize()
  txt = Text2D(__doc__, c='b', bg='lb')
  
  # mesh used to cut:
  msh = Ellipsoid().scale(0.4).pos(2.8, 1.5, 1.5).wireframe()
  
  # make a working copy and cut it with the ellipsoid
  cutembryo = embryo.clone().cutWithMesh(msh).c("gold").bc("t")
  
  show(embryo, msh,    at=0, N=2, axes=1, viewup="z")
  show(cutembryo, txt, at=1, interactive=1)
  