Allow storage of GridFunctions in DirichletBC

Closes #11 (closed)

amdis/DirichletBC.hpp

@@ -40,17 +40,18 @@ namespace AMDiS
    * \tparam CB   Basis of the column FE space
    * \tparam CTP  Treepath to the column node this constraint applies to
    **/
-  template <class Mat, class Sol, class Rhs, class RB, class RTP, class CB, class CTP>
+  template <class Mat, class Sol, class Rhs, class RowSubBasis, class ColSubBasis, class ValueGridFct>
   class DirichletBC
       : public BoundaryCondition<Mat, Sol, Rhs>
   {
     using Super = BoundaryCondition<Mat, Sol, Rhs>;
-    using RowSubBasis = Dune::Functions::SubspaceBasis<RB, RTP>;
-    using ColSubBasis = Dune::Functions::SubspaceBasis<CB, CTP>;
+
     // We assume CB's GridView to be the same as RB's
-    using Domain = typename RB::GridView::template Codim<0>::Geometry::GlobalCoordinate;
-    using Intersection = typename RB::GridView::Intersection;
-    using Range = RangeType_t<typename ColSubBasis::LocalView::Tree>;
+    using GridView = typename RowSubBasis::GridView;
+    using Intersection = typename GridView::Intersection;
+
+    using Domain = typename GridView::template Codim<0>::Geometry::GlobalCoordinate;
+    using Range = TYPEOF(std::declval<ValueGridFct>()(std::declval<Domain>()));
 
   public:
     /// Constructor accepting subspacebases.
@@ -64,17 +65,6 @@ namespace AMDiS
       , values_(FWD(values))
     {}
 
-    /// Constructor accepting global bases and treepaths.
-    template <class Values,
-      REQUIRES(Concepts::Functor<Values, Range(Domain)>)>
-    DirichletBC(RB const& rowBasis, RTP const& rowTreePath,
-                CB const& colBasis, CTP const& colTreePath,
-                BoundarySubset<Intersection> boundarySubset, Values&& values)
-      : DirichletBC(Dune::Functions::subspaceBasis(rowBasis, rowTreePath),
-                    Dune::Functions::subspaceBasis(colBasis, colTreePath),
-                    std::move(boundarySubset), FWD(values))
-    {}
-
     // fill \ref dirichletNodes_ with 1 or 0 whether DOF corresponds to the boundary or not.
     /**
      * \see BoundaryCondition::init
@@ -92,7 +82,8 @@ namespace AMDiS
     RowSubBasis rowBasis_;
     ColSubBasis colBasis_;
     BoundarySubset<Intersection> boundarySubset_;
-    std::function<Range(Domain)> values_;
+    ValueGridFct values_;
+
     std::vector<bool> dirichletNodes_;
   };
 
@@ -104,7 +95,9 @@ namespace AMDiS
                        BoundarySubset<typename RB::GridView::Intersection> boundarySubset,
                        Values&& values)
   {
-    using BcType = DirichletBC<Mat, Sol, Rhs, RB, RTP, CB, CTP>;
+    using RowSubBasis = Dune::Functions::SubspaceBasis<RB, RTP>;
+    using ColSubBasis = Dune::Functions::SubspaceBasis<CB, CTP>;
+    using BcType = DirichletBC<Mat, Sol, Rhs, RowSubBasis, ColSubBasis, TYPEOF(values)>;
     return BcType(std::move(rowBasis), std::move(colBasis), std::move(boundarySubset), FWD(values));
   }
 
@@ -117,9 +110,10 @@ namespace AMDiS
                        BoundarySubset<typename RB::GridView::Intersection> boundarySubset,
                        Values&& values)
   {
-    using BcType = DirichletBC<Mat, Sol, Rhs, RB, RTP, CB, CTP>;
-    return BcType(rowBasis, rowTreePath, colBasis, colTreePath,
-                  std::move(boundarySubset), FWD(values));
+    return makeDirichletBC<Mat,Sol,Rhs>(
+        Dune::Functions::subspaceBasis(rowBasis, rowTreePath),
+        Dune::Functions::subspaceBasis(colBasis, colTreePath),
+        std::move(boundarySubset), FWD(values));
   }
 
   /// Make a DirichletBC from a global row- and colbasis
@@ -130,8 +124,9 @@ namespace AMDiS
                        BoundarySubset<typename RB::GridView::Intersection> boundarySubset,
                        Values&& values)
   {
-    return makeDirichletBC<Mat, Sol, Rhs>(rowBasis, makeTreePath(), colBasis, makeTreePath(),
-                                          std::move(boundarySubset), FWD(values));
+    return makeDirichletBC<Mat, Sol, Rhs>(
+        rowBasis, makeTreePath(), colBasis, makeTreePath(),
+        std::move(boundarySubset), FWD(values));
   }
 
 } // end namespace AMDiS