> On 20 Aug 2018, at 14:17, Sigve Karolius <[email protected]> wrote: > > Hello, > > First of all I would like to thank you for making the excellent GMSH software > publicly available. > > Now on to my question. I am trying to rotate a surface around an axis four > times; thus, generating a structured hex mesh of a volume in the shape of a > "shell". > > In the attached example you can try to generate the shape of a hollow pipe > (simple example for illustration purposes) with and without > `SetFactory("OpenCASCADE");` by rotating a rectangle four times about an > axis. By running the example (requires version 3.X) in the GUI you can see > how the error `findRootSourceFaceForFace() failed` appears when the > OpenCASCADE is used. The attached PNGs are screenshots of the respective > result. > > My question is if there is simply something I have completely missed in the > manual?
No, it's a limitation of the current implementation of extrusion combined with the OpenCASCADE kernel : when doing fully symmetric geometries we can't track the original surface - because it is replaced in the model. It's in our TODO list, but we don't know yet how to fix this... Christophe > > Regards, > > Sigve Karolius > > > > <no_opencascade.png><opencascade.png><untitled.geo>_______________________________________________ > gmsh mailing list > [email protected] > http://onelab.info/mailman/listinfo/gmsh — Prof. Christophe Geuzaine University of Liege, Electrical Engineering and Computer Science http://www.montefiore.ulg.ac.be/~geuzaine Free software: http://gmsh.info | http://getdp.info | http://onelab.info _______________________________________________ gmsh mailing list [email protected] http://onelab.info/mailman/listinfo/gmsh
