WIP: Add test computation for bending isometries using reducedcubichermitetrianglebasis

dune/gfe/energies/discretekirchhoffbendingenergy.hh

@@ -46,7 +46,7 @@ namespace Dune::GFE
                                                             : (localFiniteElement.localBasis().order() * gridDim - 1) * 2;
 
       const auto element = localView.element();
-      localFunction_.bind(element, localSolution);
+      localFunction_.bind(element);
 
       const auto& quad = QuadratureRules<double, gridDim>::rule(localFiniteElement.type(), quadOrder);
 
@@ -59,7 +59,7 @@ namespace Dune::GFE
 
         // Compute the Frobenius norm squared of the derivative -- i.e., the harmonic energy
         // TODO: Replace this by the actual bending energy
-        energy += weight * jacobian.two_norm2();
+        energy += weight * jacobian.frobenius_norm2();
       }
 
       return 0.5 * energy;