[Dune] geometrygrid and PSurface

Oliver Sander sander at igpm.rwth-aachen.de
Thu Jan 10 16:28:06 CET 2013

Hi Marco,
in principle this is one of the things that psurface is supposed to do.
Technically it may still involve some work, because there is currently no
psurface--STL interface.
Also I don't understand your question completely.  What is your stl
boundary parametrized over?  Who constructs this parametrization?
And what do you mean by 'and my parametrization to refine inside'?

Am 09.01.2013 12:45, schrieb Marco Cisternino:
> Hi duners,
> I built a geometry grid introducing local element parametrization 
> computed using information about neighbours vertices, starting from a 
> coarse grid.
> By this way, I can get a not too bad approximation of the boundaries. 
> But I would like to get something better.
> Some boundaries are walls of an external geometry, for example in STL 
> format.
> I wonder if I can use psurface to refine boundaries on the STL 
> geometry and my parametrizations to refine inside, avoiding new 
> boundary vertices leaping over new internal vertices.
> Not considering the geometry grid, is BoundarySegment able to ensure 
> this coherence of new internal and boundary vertices?
> I hope I've been clear. I can produce "hand-written" graphical 
> examples if you need.
> Thank you very much for any help.
> Marco

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