Method get_function_values

source/fe/fe_values_base.cc:715–733

template <int dim, int spacedim>
template <typename Number>
void
FEValuesBase<dim, spacedim>::get_function_values(
  const ReadVector<Number> &fe_function,
  std::vector<Number>      &values) const
{
  Assert(this->update_flags & update_values,
         ExcAccessToUninitializedField("update_values"));
  AssertDimension(fe->n_components(), 1);
  Assert(present_cell.is_initialized(), ExcNotReinited());
  AssertDimension(fe_function.size(), present_cell.n_dofs_for_dof_handler());

  // get function values of dofs on this cell
  Vector<Number> dof_values(dofs_per_cell);
  present_cell.get_interpolated_dof_values(fe_function, dof_values);
  internal::do_function_values(make_array_view(dof_values.begin(),
                                               dof_values.end()),
                               this->finite_element_output.shape_values,
                               values);
}