[Gmsh] gmsh Digest, Vol 169, Issue 1

[Bernd Hahnebach]

 From my point of view FreeCAD does fit in your needs too. Since it  
uses OpenCascade (like GMSH) you can exchange geometries in native  
brep format. With this it is easy to make CompSolids. With CompSolids  
you can make connected multio body meshen. In the regard of geometry.  
FreeCAD is fully parametric and scriptble in python.

Bernd

Zitat von benjamin JEANTY-RUARD <ruard at artenum.com>:

> Dear Rémi COQUARD,
>
> It seems to me that there is no direct functionality in Gmsh to apply a
> merge operation between two geometric entities.
>
> Besides, Artenum company has developed this kind of operation in the
> open source SPIS project and particularly the SPIS-Dust version. After
> registering on the following page:
>
> http://dev.spis.org/projects/spine/home/captcha
>
> It is possible to have an access to the software where this
> functionality is available following the link:
>
> http://dev.spis.org/projects/spine/home/spisdust/download
>
> To use this feature, after unzip the SPIS dust archive, you must launch
> the application using the Spis.sh or Spis.bat launch script, click on
> the "create a new project" button, select the path where the project
> should be saved and click on the "create project and save" button.
> Finally, the feature is available in the bottom right panel under the
> "merge" tab.
>
> In input of the feature first it is necessary to select two .geo files
> where the geometries are defined and secondly the id of the physical
> group that must be merged with the other file. An example is shown in
> the attached file.
>
> In the SPIS context, this is used to merge a triangulated topology
> modelling a terrain model and a spatial exploration unit positioned
> above.
>
> !!! Be careful because, this feature has been validated only to merge
> plane surfaces and has not been validated with ruled surfaces !!!
>
> Hoping it might be useful,
>
> Regards,
>
> Benjamin
>
> On Wed, 2017-02-01 at 12:00 +0100,
> gmsh-request at ace20.montefiore.ulg.ac.be wrote:
>> Date: Tue, 31 Jan 2017 18:14:12 +0100
>> From: R?mi COQUARD <remi.coquard at ec2-modelisation.fr>
>> To: gmsh at onelab.info
>> Subject: [Gmsh] Merging several geometries ?
>> Message-ID: <5890C5E4.504 at ec2-modelisation.fr>
>> Content-Type: text/plain; charset="utf-8"; Format="flowed"
>>
>> Dear,
>>
>> I'm a recent user of you Gmsh software.
>> I use it for the meshing of complex volumes that can actually be
>> obtained by merging simpler individual particles (for example spheres
>> and circualr cylinders).
>> Therefore, I wonder if your software allows to create a geometry
>> (volume) by merging (or "soldering") several geometries previously
>> created by classical commands (such as extrusion ....) ?
>>
>> The final objective is to mesh the complex volume in 3-D elements
>>
>> Thank you by advance for your attention and assistance
>>
>> R?mi Coquard
>> Research Engineer
>> T?l : 04 37 48 84 37
>> Fax : 04 37 48 84 05
>> Site : *_www.ec2-modelisation.fr <http://www.ec2-ms.fr>_*
>> 66, bd Niels Bohr 69 603 Villeurbanne Cedex
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>
> --
>
>
> Benjamin JEANTY-RUARD
>
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