First step to the implementation of the nodal solver for diffusion

src/language/modules/SchemeModule.cpp

@@ -42,6 +42,7 @@
 #include <scheme/IDiscreteFunctionDescriptor.hpp>
 #include <scheme/NeumannBoundaryConditionDescriptor.hpp>
 #include <scheme/ScalarDiamondScheme.hpp>
+#include <scheme/ScalarNodalScheme.hpp>
 #include <scheme/SymmetryBoundaryConditionDescriptor.hpp>
 #include <scheme/VectorDiamondScheme.hpp>
 #include <utils/Socket.hpp>
@@ -601,6 +602,24 @@ SchemeModule::SchemeModule()
         return ScalarDiamondSchemeHandler{alpha, mub_dual, mu_dual, f, bc_descriptor_list}.solution();
       }
 
+      ));
+  this->_addBuiltinFunction(
+    "nodalheat",
+    std::make_shared<BuiltinFunctionEmbedder<std::shared_ptr<
+      const IDiscreteFunction>(const std::shared_ptr<const IDiscreteFunction>&,
+                               const std::shared_ptr<const IDiscreteFunction>&,
+                               const std::shared_ptr<const IDiscreteFunction>&,
+                               const std::shared_ptr<const IDiscreteFunction>&,
+                               const std::vector<std::shared_ptr<const IBoundaryConditionDescriptor>>&)>>(
+
+      [](const std::shared_ptr<const IDiscreteFunction>& alpha,
+         const std::shared_ptr<const IDiscreteFunction>& mub_dual,
+         const std::shared_ptr<const IDiscreteFunction>& mu_dual, const std::shared_ptr<const IDiscreteFunction>& f,
+         const std::vector<std::shared_ptr<const IBoundaryConditionDescriptor>>& bc_descriptor_list)
+        -> const std::shared_ptr<const IDiscreteFunction> {
+        return ScalarNodalSchemeHandler{alpha, mub_dual, mu_dual, f, bc_descriptor_list}.solution();
+      }
+
       ));
 
   this->_addBuiltinFunction("unsteadyelasticity",