Handle ignored nodes

dune/tectonic/myblockproblem.hh

@@ -79,8 +79,11 @@ class MyBlockProblem<MyConvexProblemTypeTEMPLATE>::IterateObject {
   void solveLocalProblem(
       LocalVectorType& ui, int m,
       const typename Dune::BitSetVector<block_size>::const_reference ignore) {
-    // Note: ignore is currently ignored (what's it used for anyway?)
     {
+      // TODO: Does it make any sense to ignore single spatial dimensions here?
+      if (ignore.test(0))
+        return;
+
       LocalMatrixType const* localA = NULL;
       LocalVectorType localb(problem.f[m]);