# Main Command: go
# FaceCube by Guy Walker
# www.logoarts.co.uk

to new
  # set default screen, pen and turtle
  ResetAll SetScreenSize [400 400] HideTurtle
  SetSC Black SetPC Green SetPS 1 PenUp
end

to cube :side
  For [P 0 2] [
    For [Q 0 1] [
      Parasol :Side 1+Random 16
      Up 180] 
    Up 90 Left 90]
end

to parasol :side :col
  Forward :Side/2 Down 90
  If :Side > 100 [Cube :Side/2]
  SetPC :Col Square3D :Side 
  Up 90 Back :Side/2
end

to square3d :side
  # square (side x side) drawn from centre (tp)
  Back :Side/2 Right 90 Back :Side/2 PenDown
  PolyStart Repeat 4 [Forward :Side Left 90] PolyEnd
  PenUp Forward :Side/2 Left 90 Forward :Side/2     # return to centre
end

to go
  New Perspective CS PenUp
  HideTurtle SetSC Black Left 12
  Cube 300 Wait 30
  Message [View3D?] View3D
end