dolfin team mailing list archive

[Anders Logg <logg@xxxxxxxxx>]

On Mon, Jun 22, 2009 at 10:08:45AM +0100, Garth N. Wells wrote:
> Anders Logg wrote:
> > On Sun, Jun 21, 2009 at 11:36:29PM -0600, Bartosz Sawicki wrote:
> >> On 19/06/09 02:53 PM, kent-and@xxxxxxxxx wrote:
> >>> When using VMTK the boundary indicators are stored as a set of arrays
> >>> with names
> >>> boundary facet cells,
> >>> boundary facet numbers
> >>> boundary indicators
> >>> The two first arrays are used to find the global facet numbers.
> >>> The function computes a mesh function based on these arrays.
> >>>
> >>> This was what Anders prefered since VMTK does not now anything
> >>> about the global numbering of facets in Dolfin (without linking it into
> >>> Dolfin).
> >>>
> >>> This is not a VMTK specific problem, but I do think VMTK is the only
> >>> mesh-generator
> >>> that let you store boundary indicators at the moment. I guess we should add
> >>> this to NetGen as well, both Hans Petter Langtangen and Douglas Arnold has
> >>> bugged
> >>> me about this the last few days.
> >> I'm every day user of this functionality. I use Netgen generated models, 
> >> but also other software which add boundary indicators to existing 
> >> meshes. Netgen supports boundary indicators quite well, both by geo 
> >> files, and by GUI. I don't understand what you want to add?
> > 
> > Is it possible to set DOLFIN boundary indicators from Netgen? I didn't
> > know.
> > 
> > Meshing is a problem for us. I don't know what the long-term goal
> > is. Netgen is good but it would be nice if the interface could be
> > updated to a modern toolkit instead of Tk.
> > 
> > One option could be to add meshing capabilities to MeshBuilder (using
> > an external library like Netgen).
> > 
> > I'd like a tool where I can
> > 
> >   1. draw simple domains in 2D / 3D
> >   2. import CAD geometry
> >   3. set boundary indicators
> >   4. create and export Mesh in DOLFIN XML
> >
> 
> How many of these steps can gmsh perform?

gmsh also looks like it's in need of a new interface. Does anyone know
if there are plans to improve it?

-- 
Anders

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