>I don't know if the "mathematical correct" answer has already been given
>(or if you have come to a solution in another way), the term for the curve
>that the trailer describes following the truck (or a dog following the leash
>and so on) is called "tractrix". It is a simple solution of a simple differantial
>equation.
>
>Guckst Du hier:
>
>http://mathworld.wolfram.com/Tractrix.html
>
>HTH
>
>Markus
>

Thanks for the the term of the curve. Yes, the problem (and its solution) is
quite simple, but putting it into an algorithm with pov models to move is a
little more than just solving a differential equation.
I tried it with a dog yesterday, but he didn't follow the curve. Charlie was
running three times around a tree and a garden chair, although I showed him
the equations before! Any solution for this problem? ;-)

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