FEniCS / ffcx

Next generation FEniCS Form Compiler for finite element forms
https://fenicsproject.org
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Expressions on facets #672

Closed jorgensd closed 4 months ago

jorgensd commented 4 months ago

Makes it possible to use expression tabulation on facets.

As for exterior facet integrals, they are determined by the local facet index of a given cell.

For an Expression to be considered a facet expression, the evaluation points has to be of the topological dimension of the facet