On Mar 27, 2011, at 1:40 PM, Praveen C wrote:
> I need a higher order representation of the boundary, which gmsh can already 
> provide.
> 
> Would it be possible to use the higher order elements as given in gmsh to 
> construct the mapping in deal.ii ? I am thinking of a general solution which 
> should work for any geometry described by a gmsh mesh file, maybe using the 
> approach suggested by Luca. I understood his idea of creating the 
> displacement field but how to create the mapping from the displacement field ?

If you have the displacement field, then MappingQEulerian does exactly what you 
are asking for. 

What is currently missing from the deal.II library is a function that reads the 
high order element, generates a standard mesh from it, and an additional 
displacement field coherent with the read mesh. If you want to give it a try, 
just take a look at grid_in.cc. It should be self explanatory...

Luca.



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