dolfin team mailing list archive

[Anders Logg <logg@xxxxxxxxx>]

On Wed, Jul 02, 2008 at 08:59:35AM -0400, Hatef Monajemi wrote:
> 
> 
> On Wed, 2008-07-02 at 11:18 +0200, Vuk.Milisic@xxxxxxx wrote:
> > Is it possible to import
> > marked boundary nodes from gmsh ?
> > 
> > if not is there an xml tag
> > specific for that or should
> > I generate by hand SubDomain
> > imput ?
> 
> The following quote from Anders Logg might help you, But if you want to
> tag the boundary which is complicated then I suggest using MeshBuilder
> but if it is easily defined by hand then it is better to define the
> SubDomains in main.cpp.
> 
> quote from Anders:
> "The boundary is specified either by a subclass of SubDomain (which
> must overload inside()) or by a MeshFunction<uint> over the facets of
> the boundary. The mesh function can be created either manually (but
> then using SubDomain is probably easier) or it can be created using
> the graphical front-end MeshBuilder which can be obtained by"
> 
>   hg clone http://www.fenics.org/dev/meshbuilder

It is also possible to include the boundary markers in the mesh file.
See the example

  data/meshes/aneurysm.xml.gz

and the following post:

  http://www.fenics.org/pipermail/dolfin-dev/2008-May/008037.html

There is currently no support in dolfin-convert (AFAIK) to include
boundary markers in the output but this would be nice to have now that
we have a file format that supports it.

-- 
Anders

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