<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
<HTML>
<HEAD>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1">
<META NAME="Generator" CONTENT="MS Exchange Server version 6.5.7652.24">
<TITLE>RE: [Gmsh] FW: Bug in gmsh-2.2.3 / OCC?</TITLE>
</HEAD>
<BODY>
<!-- Converted from text/plain format -->
<BR>
<P><FONT SIZE=2>Hi,<BR>
<BR>
First, I would like to congratulate you for developing such a great software.<BR>
<BR>
I tried with version 2.1.0 and the it is able to import with no errors and mesh this surface. This is a surface of a more complex part which I broke down until finding the problematic surface. When I meshed the part, this surface caused a crash of Gmsh and I couldn't retreive the mesh of other surfaces. I would be glad if gmsh presented an error during meshing that surface but still being able to export the mesh of the non-failing surfaces. Then I could correct the mesh using a mesh editor.<BR>
<BR>
I know STEP is better than IGES for importing in Gmsh. I also tested several "flavours" of IGES coming from Rhino3d and I found one which is almost as good as STEP. However, I have a part that also produces a similiar error during import like:<BR>
<BR>
Error : Something wrong in edge loop<BR>
Warning : OCC STL triangulation failed<BR>
<BR>
using STEP or IGES format with any "flavour". And when I mesh it, Gmsh crashes. Although, as I said I would be more than glad if Gmsh just presented a message of the failing surface and/or not try to mesh these surfaces. This way I could still export the mesh.<BR>
<BR>
Regards,<BR>
<BR>
Billy.<BR>
<BR>
<BR>
<BR>
-----Mensagem original-----<BR>
De: Christophe Geuzaine [<A HREF="mailto:cgeuzaine@ulg.ac.be">mailto:cgeuzaine@ulg.ac.be</A>]<BR>
Enviada: seg 21-07-2008 19:23<BR>
Para: Billy Araújo<BR>
Cc: gmsh@geuz.org<BR>
Assunto: Re: [Gmsh] FW: Bug in gmsh-2.2.3 / OCC?<BR>
<BR>
Billy Araújo wrote:<BR>
><BR>
> I forgot to say that this happens using the windows version. I tried on<BR>
> the Linux version and it seems to be working OK.<BR>
<BR>
Hi Billy - Even on Linux the parametrization of the surface looks weird,<BR>
and the resulting mesh is extremely distorted.<BR>
<BR>
If possible always try to use STEP files instead of IGES (IGES files do<BR>
not contain the topology, so a geometrical tolerance must be used to<BR>
decide when entities are identical).<BR>
<BR>
><BR>
> Regards,<BR>
><BR>
> Billy.<BR>
><BR>
><BR>
> -----Original Message-----<BR>
> From: gmsh-bounces@geuz.org on behalf of Billy Araújo<BR>
> Sent: Thu 7/17/2008 12:35 AM<BR>
> To: gmsh@geuz.org<BR>
> Subject: [Gmsh] Bug in gmsh-2.2.3 / OCC?<BR>
><BR>
><BR>
> Hi,<BR>
><BR>
><BR>
> I send an IGES file in attachment.<BR>
><BR>
> It gives an error in the edge loop when importing.<BR>
><BR>
> Error : Something wrong in edge loop<BR>
> Warning : OCC STL triangulation failed<BR>
><BR>
> And when I try to mesh it, Gmsh crashes.<BR>
><BR>
><BR>
> Billy.<BR>
><BR>
><BR>
> ------------------------------------------------------------------------<BR>
><BR>
> _______________________________________________<BR>
> gmsh mailing list<BR>
> gmsh@geuz.org<BR>
> <A HREF="http://www.geuz.org/mailman/listinfo/gmsh">http://www.geuz.org/mailman/listinfo/gmsh</A><BR>
<BR>
<BR>
--<BR>
Prof. Christophe Geuzaine<BR>
University of Liege, Electrical Engineering and Computer Science<BR>
<A HREF="http://www.montefiore.ulg.ac.be/~geuzaine">http://www.montefiore.ulg.ac.be/~geuzaine</A><BR>
<BR>
</FONT>
</P>
</BODY>
</HTML>