[Gmsh] Bug? Error: Control Points not Cocircular

[David Colignon]

On 25/05/11 15:33, Sebastian Theilenberg wrote:

> Hello everybody!
>
> This is my first question to this list, so go easy on me! ;-)
>
> I created a sphere using 8 Circles of 90 degrees, two creating one arc
> of 180 degrees,


Hi Sebastian,

Gmsh's native CAD engine does not support circles arcs >= Pi

Regards,

Dave

--
David Colignon, Ph.D.
Collaborateur Logistique du F.R.S.-FNRS
CÉCI - Consortium des Équipements de Calcul Intensif
ACE - Applied & Computational Electromagnetics
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Université de Liège
4000 Liège - BELGIQUE
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and four of that rotated 90 degrees around the z-axis to
> create the whole sphere. Then i created 4 additional Circles in the
> x-y-plane to get an "equator". I then created Ruled Surfaces and
> Volumes.
>
> Everything works fine as long as the central Point lies on the z-axis.
> If I move it to e.g. (1, 1, z) i get error messages complaining the
> control points would not be cocircular.
>
> My question is: Why is the creation of Circles sensitive to the position
> on the grid? Is there a way to get it done nevertheless?
>
> Thanks for any help in advance!
>
> Sebastian
>
>
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