[Gmsh] problem when saving in unroll format surface which, contains a hole boundary

[Mikhail Artemyev]

Benjamin,

I think I see what you want, and to best of my knowledge Gmsh won't be 
able to do that (but I surely may be wrong).
I believe you'll need to define lines connecting vertices of the 
triangle with the bottom side of the cylinder explicitly. In this case 
it would be better to define the circular base of the cylinder by 3 (not 
4) points. And then you'll need to define 3 ruled surfaces. This 
approach will work.

Best regards,
Mikhail


On 03/27/2014 03:24 AM, benjamin JEANTY-RUARD wrote:
> Hello Mikhail,
>
> Thank you for your answer.
>
> Indeed, I have to use a ruled surface and no a plane surface. For
> example, I attach a sample geo file.
>
> Best regards,
>
> Benjamin
>
> Le mercredi 26 mars 2014 à 13:07 -0500, Mikhail Artemyev a écrit :
>> Hi Benjamin,
>>
>> Use "Plane Surface" instead.
>> Or there is a particular reason to use the "ruled" surface?
>>
>> Best regards,
>> Mikhail
>>
>>> Hello every body!
>>>
>>> I have a problem with Gmsh software.
>>>
>>> I create a ruled surface which contains a hole boundary. Then I want to
>>> save this geo file in unroll format. But when I do it, my ruled surface
>>> is not exported and I do not understand why. I have the message:
>>>
>>> "Error   : Skipping surface 40 in export"
>>>
>>> The file is attached to this mail.
>>>
>>> Can you say me if I perform something wrong or not.
>>>
>>> I tested this operation with gmsh version 2.4.2, 2.7.0 and 2.8.4.
>>>
>>> Thanks a lot.
>>>
>>> Regards
>>>