In article <38b18d1f@news.povray.org> , ron### [at] povrayorg (Ron Parker)
wrote:

>>Given that you know the total length you can use 2*pi*r (perimeter of a
>>circle) and the fact that  2*pi*r*360/angle = length
>
> This is only true in the limit as the number of characters approaches
> infinity.  He's only got the lengths of the chords, not of the arcs.
> The length of a chord is 2*r*sin(angle/2).

It seems I don't understand the question completely then.  I learned math in
German and the English terms might have confused me ... but I still think
there should be a simple solution to the problem.

I have posted a diagram in povray.binaries.images which should help me
understand the problem.  To make it simple, could you state in terms of that
diagram which variables are known?


     Thorsten


____________________________________________________
Thorsten Froehlich, Duisburg, Germany
e-mail: tho### [at] trfde

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