Zeger Knaepen wrote:
> 
> While tracing my Star Destroyer model, I get this warning or error message or
> whatever it is:
> Illegal grid value in dda_traversal().
> But it doesn't seem to affect the image or the tracing-process.
> What does it mean?

Please see -
http://www.students.tut.fi/~warp/povQandT/miscQandT.html#ddatraversal

-- 
Ken Tyler

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