Logo Arts

To New
  # set default screen, pen and turtle values
  ResetAll SetScreenSize [400 400] HideTurtle
  SetSC Black SetPC Green SetPS 1 PenUp
End

To GridSq : Order : Side
  # draw tile at each column x row position
  LocalMake " Offset (1+ : Order )/2
  For (List " Col 1 : Order ) [
    For (List " Row 1 : Order ) [
      SetXY : Side *( : Col - : Offset ) : Side *( : Row - : Offset )
      Tile : Col : Row : Side ] ]
End

To Tile : Col : Row : Side
  If (Or : Col <3 : Col >9) [Stop]
  If (Mod ( : Col + : Row ) 6) <3 [SetH 0] [SetH 90]
  If (Mod ( : Col + : Row ) 2) =0 [SetPC DarkGreen] [SetPC White]
  SetX X+X/1.9     # spread columns
  Seaweed Fill Wait 3
End

To Seaweed
  # fixed size tile drawn from centre (tp)
  Back 14.5 Right 90 Back 14.5 PenDown
  Repeat 2 [
    Forward 14 Left 90 Forward 3 Right 90 Forward 12
    Left 90 Forward 12 Right 90 Forward 3 Left 90 Forward 14 Left 90]
    PenUp Forward 14.5 Left 90 Forward 14.5     # return to centre
End

To Go
  New SetSC [0 191 191]
  GridSq 11 30
End