Method Diff

fem/coefficient_geo.cpp:362–369

    

    virtual shared_ptr<CoefficientFunction>
    Diff (const CoefficientFunction * var, shared_ptr<CoefficientFunction> dir) const override
    {
      // if (var == shape.get())
      if (dynamic_cast<const DiffShapeCF*>(var))
        return -TransposeCF(dir->Operator("Gradboundary")) * const_cast<cl_NormalVectorCF*>(this)->shared_from_this();
      return CoefficientFunctionNoDerivative::Diff(var, dir);
    }
    
  };