dolfin team mailing list archive

[Anders Logg <logg@xxxxxxxxx>]

On Wed, May 09, 2007 at 04:16:01PM +0200, Johan Hoffman wrote:
> > What is the status of mesh refinement?
> >
> > What does work and what does not work?
> 
> We (me and Johan Jansson) have implemented a bisection mesh refinement
> algorithm that is dimension independent, and also a mesh coarsening
> algorithm that is dimension independent. Johan has also implemented a
> general projection operator that projects a function from one
> mesh+function space to another mesh+function space. These algorithms
> appear to be in good shape. What is needed is some more testing, cleaning
> up, and a demo, which is under way.
> 
> I have also implemented a class for a hierarchy of meshes, and started to
> re-implement the old Bey-algorithm for this structure.

Good, but why is the Bey algorithm needed? Does it do things the new
bisection doesn't?

> On the mesh refinement/coarsening todo-list we next have: edge-flip and
> face-swaps, and finishing the Bey-algorithm. We are also working on some
> mesh smoothing algorithms together with Michael Stöckli.
> 
> /Johan

Good, I'm just trying to get a feeling for what we need to do before
the next release and one of them is to get the mesh demo working.

/Anders