Thank you very much, now I see why my approach failed.
Well, then I am curious for the changes.
Sebastian
On 5/1/19 3:40 PM, Christophe Geuzaine wrote:
On 29 Apr 2019, at 09:22, Sebastian Blauth <[email protected]> wrote:
Hi,
I've got a question regarding the CreateGeometry command in conjunction with
multiple Surfaces.
I would like to use gmsh for remeshing a transformed mesh (which was orignally
created with gmsh) and I think that the CreateGeometry command would do exactly
what I want: Take a discrete mesh and extract the underlying geometry (ideally
with the same indices) so that I can perform a remeshing.
CreateGeometry will create a parametrization of the underlying mesh, so that it
can be remeshed. Here however since you only save the triangles (not the line
elements on the curves, due to your physical definitions), the 1D mesh is empty
- leading to an empty surface mesh. Note that I cannot reproduce the seg fault
with the latest Gmsh version - which version do you use?
To make it work with Gmsh 4.3, just remove the "Physical" definitions on test.geo. You
should also remove "Coherence Mesh" from remesh.geo, as the mesh is already conformal.
Note that we are (again...) reworking the remeshing pipeline to make it more
robust: the parametrizations will now be persistant (saved in the mesh file),
and the internal workflow will make it possible to use with discrete entities
all of the features currently reserved for CAD entities: mesh size depending on
curvature, parallel meshing, high-order meshes, etc. We plan to release this in
Gmsh 4.4. or 4.5.
Christophe
However, this does not work if I have multiple (adjacent?) surfaces in my mesh.
There, I just get a segmentation fault.
I've included a minimal working example, where test.geo defines my "deformed" mesh
(unfortunately I cannot send the mesh file directly, but I generated it just using "gmsh
test.geo -2", and I want to remesh this using remesh.geo
I really appreciate any help on this.
Best regards,
Sebastian
--
Sebastian Blauth
Fraunhofer-Institut für
Techno- und Wirtschaftsmathematik ITWM
Fraunhofer-Platz 1, 67663 Kaiserslautern
Telefon: +49 631 31600-4968
[email protected]
www.itwm.fraunhofer.de
<remesh.geo><test.geo>_______________________________________________
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—
Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science
http://www.montefiore.ulg.ac.be/~geuzaine
--
Sebastian Blauth
Fraunhofer-Institut für
Techno- und Wirtschaftsmathematik ITWM
Fraunhofer-Platz 1, 67663 Kaiserslautern
Telefon: +49 631 31600-4968
[email protected]
www.itwm.fraunhofer.de
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