Hi Jelle, that sounds like a great idea - thanks for the invitation! I think SMESH is a huge plus for PythonOCC that deserves attention. I could write about how I use SMESH through PythonOCC in my software for e.g. hybrid meshing, meshing periodic domains etc. What do you think ?
For the SMESH and GEOM updates (I'm not sure about the current status as I haven't received a response from Fotios yet) I tried to create a branch from Thomas "tp/oce-0.10-support" branch. Cloning worked fine, but for creating my own branch I would need a github account, right ? With the update to SMESH version 6.5.0 I can now enjoy Salomes new "viscous layers" meshing feature through PythonOCC, which is pretty neat. By the way, thanks for pointing out how to graph BRep topology. That's really powerful. I think I will need that for associating subshapes (edges/faces) for automatic prism meshing (e.g. in the space between two shells of different size but same topology). Thanks, Mark Am 25.09.2012 um 19:00 schrieb jelle feringa: > Wow, cool Mark! > > Mark, what about inviting you to write a post on the PythonOCC blog on the > development of your software & some projections & speculations of the SMESH > subproject? > I feel pretty bad about not having yet further explored your contribution, I > hope to find the time sooner than later! > But a blog post about further developments would be very interesting, wouldnt > you say so? > > Let me know if you think its a fun idea, > > Thanks, > > -jelle > > > On Tue, Sep 25, 2012 at 6:46 PM, Mark Blome <bl...@zib.de> wrote: > > Hi Yuting, > > if you have meshed your geometry with SMESH then you can easily extract a > submesh for any subshape of your geometry, e.g. > > from OCC.Utils.Topology import Topo > ... > for edge in Topo(box).edges(): > submesh = mesh.GetSubMesh(edge) > submeshds = submesh.GetSubMeshDS() > for ielem in range(submeshds .NbElements()): > elem = submeshds.elemValue(ielem) > n1 = elem.GetNode(0).GetID(); n2 = elem.GetNode(1).GetID(); > ... > To find out which one of your shape edges you need to consider you can - for > example - check the location of the points of it's vertices. > > Regards, > Mark > > > Am 25.09.2012 um 15:06 schrieb 张玉婷: > >> Hi Jelle, >> >> Thanks for quick reply. >> >> Yes, I am talking about FEM meshing. May I re-explain my question. I have a >> big modeling, I have meshed it already. What I want right now is: only to >> get the nodes index of one end of the partial modeling (just the node on >> one edge). I am wondering is there any commands to get the specific edge >> index and the nodes index belonging to that edge, after meshing? >> >> Regards, >> Yuting >> >> On Tue, Sep 25, 2012 at 2:46 PM, jelle feringa <jelleferi...@gmail.com> >> wrote: >> >> I am trying to find the node indices belong to some wires, edges or surfaces >> (which are at some given locations). I am wondering is there such commands >> available in pythonocc? >> >> >> Hi Yuting, >> >> Do you mean by nodes, vertices [ a bit FEM speak.. ]? >> I think what you aim at is topology traversal. >> >> Sure, try this: >> >> In [13]: from OCC.BRepPrimAPI import BRepPrimAPI_MakeBox >> >> In [14]: box = BRepPrimAPI_MakeBox(1,1,1).Shape() >> >> In [15]: box >> Out[15]: <OCC.TopoDS.TopoDS_Shape; proxy of <Swig Object of type >> 'TopoDS_Shape *' at 0x10f13a570> > >> >> In [16]: from OCC.Utils.Topology import Topo >> >> In [17]: from OCC.Utils.Construct import vertex2pnt >> >> In [18]: for vert in Topo(box).vertices(): print vertex2pnt(vert).Coord() >> >> >> >> >> (1.0, 1.0, 0.0) >> >> >> >> >> >> _______________________________________________ >> Pythonocc-users mailing list >> Pythonocc-users@gna.org >> https://mail.gna.org/listinfo/pythonocc-users >> >> >> _______________________________________________ >> Pythonocc-users mailing list >> Pythonocc-users@gna.org >> https://mail.gna.org/listinfo/pythonocc-users > > > _______________________________________________ > Pythonocc-users mailing list > Pythonocc-users@gna.org > https://mail.gna.org/listinfo/pythonocc-users > >
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