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[Patrick Riesen <priesen@xxxxxxxxxxxxxxx>]

hello,

I possibly want to implement a free surface problem with my dolfin code 
using the dolfin ALE functionality. dolfin can do the automatic updating 
of the mesh nodes or else shift the nodes by a user-supplied 
displacement function.

in the automatic updating, the vertex-displacements are 
'method-supplied' and not accessible, but i need to have them in some 
displacement function  in order to compute correct convective velocities 
at all theeuler/ale/lagrange dofs.

i can get the displacements at the mesh vertices from comparing old (not 
yet moved) and new (moved) mesh, but what's a good way to generate a 
displacement function in a desired functionspace out of those vertex-values?


best regards,
patrick