EXTERNPROTO SplineGrid[
  field SFInt32 n
  field SFInt32 m
  field MFVec3f points ] "vrml-math-pGrid.wrl#SplineGrid"
  
  NavigationInfo{ type "EXAMINE" }
  Viewpoint{ position 0 0 8 description "Front"}
  Viewpoint{ position 0 3 7 orientation 1 0 0 -.5 description "Above"}
  DirectionalLight { direction 1 -1 -1 color 0 0 1}
  Background{ skyColor .5 .5 1}
  
  Transform{ translation 0 1 0 scale 1.5 1.5 1.5 children[
  SplineGrid{ n 5  m 7
  points[
  -0.514562 -1.058253 0
  -0.368931 -1.058253 0.242718
  0.031416 -1.058253 0.208538
  0.466020 -1.058253 0.271845
  0.621360 -1.058253 0
  
  -0.613834 0.000000 0
  -0.417274 0.000000 0.251426
  0.001080 0.000000 0.230549
  0.485236 0.000000 0.284181
  0.663587 0.000000 0
  
  -0.433567 0.495145 0
  -0.298888 0.495145 0.189008
  0.002066 0.495145 0.273078
  0.318306 0.495145 0.211936
  0.460628 0.495145 0
  
  -0.499656 0.834952 0
  -0.388349 0.834952 0.242718
  -0.009709 0.836939 0.331630
  0.398058 0.834952 0.271845
  0.527494 0.834952 0
  
  -0.563106 1.140699 0.166905
  -0.427184 1.135922 0.398058
  -0.009708 1.135922 0.349515
  0.407767 1.135922 0.427185
  0.572816 1.141057 0.171276
  
  -0.526243 1.407767 0
  -0.322436 1.374663 0.236938
  -0.015606 1.392720 0.244965
  0.313696 1.383692 0.263655
  0.515733 1.407767 0
  
  -0.218060 1.572816 0
  -0.213906 1.539712 0.113569
  -0.022843 1.506608 0.217449
  0.172062 1.539712 0.123843
  0.182650 1.572816 0
  ]}
  ]}