[firedrake] Perturbing mesh extrusion at runtime

[Tuomas Karna]

Hi all,

Custom mesh extrusions can be generated by manipulating mesh.coordinates 
directly. This works fine as long as the coordinates are changed prior 
to the first solve. After that changing the coordinates has no effect as 
precomputed mesh properties do not get updated.

What do I need to do to force a mesh update? I need to update the 
extrusion only, not the parent mesh. Can this be done efficiently?


Cheers,

Tuomas