Re: LOGO-L> Restricted vision, help?

[mbrosen <mbrosen@icon-stl.net>]

> "How can I tell if a Turtle Geometry procedure will draw a closed shape 

If by closed shape you mean a shape in which the turtle returns to its
original starting place, you might try something like this:

to pretest
name pos "start.pos
name heading "start.heading
end

Then draw whatever you want and then

to posttest
if and (pos = :start.pos) (heading = :start.heading) [flashit]
end

to flashit
  the kid can write whatever he wants 
end

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