[Gmsh] API define periodic line

[Christophe Geuzaine]

Hi Artur - it's now in the API: give it a try.

PS: we have started to generate binary SDKs that contain the shared Gmsh library and the C++/C headers and Python module (see the *-sdk* files in gmsh.info/bin/). The SDK is built using the same compilers as the official builds, with the same options (built-in OpenCASCADE, etc.). This should make it much easier to develop C++, C or Python code based on Gmsh, without having to compile the Gmsh code from scratch.

> On 25 Apr 2018, at 22:30, Christophe Geuzaine <geuzaine at gmail.com> wrote:
> 
> 
> Hi Arthur,
> 
> Indeed it's currently missing from the API - we'll add it soon.
> 
> Christophe
> 
>> On 25 Apr 2018, at 13:12, Artur Palha <artur.palha at gmail.com <mailto:artur.palha at gmail.com>> wrote:
>> 
>> Dear Benedikt,
>> 
>> Thank you for your reply. Unfortunately I am unable to understand exactly what you mean by that. Roughly I think that you define the periodic surface 2 (for example) to be the translation along [400,0,0] of the surface 1. Still you make use of the Periodic Surface call. My problem is that I am unable to find an equivalent function to Periodic Surface in the API of gmsh. 
>> 
>> To make it clearer: What is the equivalent code using the API of gmsh that implements:
>> 
>> Periodic Line{mySlaveLine} = {myMasterLine};
>> 
>> Once again thank you for your help.
>> 
>> -artur palha
>> 
>> 
>> On Wed, Apr 25, 2018 at 12:07 PM, Benedikt Oswald <benedikt.oswald at lspr.swiss <mailto:benedikt.oswald at lspr.swiss>> wrote:
>> Dear Artur, what you can do is something along these lines:
>> 
>> // constrain the boundary surfaces to conformal discretization
>> 
>> // x
>> Periodic Surface {2} = {1} Translate {400,0,0};        // ex
>> 
>> // y
>> Periodic Surface {4} = {3} Translate {0,300,0};        // ey
>> 
>> // z - floor and roof
>> Periodic Surface {6} = {5} Translate {0,0,150};        // ez
>> 
>> in fact, you need to know the id of the geometrical entity (surface)
>> 
>> and transfer it by the requested amount.
>> 
>> Greeetings, Benedikt
>> 
>> 
>> 
>> 
>> Am 25.04.18 um 12:02 schrieb Artur Palha:
>> > Dear All,
>> >
>> > I am trying to use gmsh's API. I can successfully use it to setup my
>> > geometry and generate the mesh. The only issue I am having is that I
>> > cannot find the function (both in Python and C++) to define Periodic
>> > Lines (or Periodic Surfaces). Does anyone know this?
>> >
>> > Thank you.
>> >
>> > -artur palha 
>> >
>> >
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>> -- 
>> ----------------------------------------------------------------------------------------------------------------------
>> Dr. sc. techn. Benedikt Oswald - first engineer - LSPR AG - phone +41 43 366 90 74
>> Grubenstrasse 9, CH-8045 Zürich, benedikt.oswald at lspr.swiss <mailto:benedikt.oswald at lspr.swiss>
>> ----------------------------------------------------------------------------------------------------------------------
>> 
>> 
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