Hello all,
I always learning a lot from you....
For my problem, I have to impose different boundary values,
so for example if in step- 4, we use class derived from Function<dim> for
making boundary condition.
but.. is there any way that I can bring some values from mainclass? to be
more specific....
the main class of step 4 is...
template <int dim>
class Step4
{
public:
Step4 ();
void run ();
private:
void make_grid ();
void setup_system();
void assemble_system ();
void solve ();
void output_results () const;
Triangulation<dim>
<http://dealii.org/developer/doxygen/deal.II/classTriangulation.html>
triangulation;
FE_Q<dim> <http://dealii.org/developer/doxygen/deal.II/classFE__Q.html> fe;
DoFHandler<dim>
<http://dealii.org/developer/doxygen/deal.II/classDoFHandler.html>
dof_handler;
SparsityPattern
<http://dealii.org/developer/doxygen/deal.II/classSparsityPattern.html>
sparsity_pattern;
SparseMatrix<double>
<http://dealii.org/developer/doxygen/deal.II/classSparseMatrix.html>
system_matrix;
Vector<double>
<http://dealii.org/developer/doxygen/deal.II/classVector.html> solution;
Vector<double>
<http://dealii.org/developer/doxygen/deal.II/classVector.html> system_rhs;
*double u_main = 1; <- If I want to bring this value to Boundary class...*
};
template <int dim>
class BoundaryValues : public Function<dim>
{
public:
BoundaryValues () : Function<dim>() {}
virtual double value (const Point<dim> &p,
const unsigned int component = 0) const;
};
template <int dim>
double BoundaryValues<dim>::value (const Point<dim> &p,
const unsigned int /*component*/) const
{
double u = u_main; *<-obviously, this dose not **work,showing error
message that use of undeclared identifier 'u_main'*
return
}
Looking forward to your help!!
Thank you
Jaekwang Kim
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