From: Jonathan Robey Date: Sun, 24 Jul 2016 16:54:03 +0000 (-0700) Subject: Add logic to only require interpolated components interpolate X-Git-Tag: v8.5.0-rc1~840^2~2 X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6ae4f88acf80c1e1291231161f33d4e1f4ebba0a;p=dealii.git Add logic to only require interpolated components interpolate --- diff --git a/include/deal.II/numerics/vector_tools.h b/include/deal.II/numerics/vector_tools.h index 38cc561476..a01c32c2c8 100644 --- a/include/deal.II/numerics/vector_tools.h +++ b/include/deal.II/numerics/vector_tools.h @@ -2792,7 +2792,8 @@ namespace VectorTools "You are attempting an operation that requires the " "finite element involved to be 'interpolating', i.e., " "it needs to have support points. The finite element " - "you are using here does not appear to have those."); + "you are using here does not appear to have those for " + "the required components."); /** * Exception diff --git a/include/deal.II/numerics/vector_tools.templates.h b/include/deal.II/numerics/vector_tools.templates.h index ee161501e7..ab6c5ff009 100644 --- a/include/deal.II/numerics/vector_tools.templates.h +++ b/include/deal.II/numerics/vector_tools.templates.h @@ -115,38 +115,37 @@ namespace VectorTools // vectorfunction multiple times at the // same point on a cell. // - // note that we have to set up all of the - // following arrays for each of the - // elements in the FECollection (which - // means only once if this is for a regular - // DoFHandler) - std::vector > > unit_support_points (fe.size()); + // First check that the desired components are interpolating. for (unsigned int fe_index=0; fe_index base_index = fe[fe_index].component_to_base_index(component_index); + AssertThrow ((fe[fe_index].base_element(base_index.first).has_support_points()) || + (fe[fe_index].base_element(base_index.first).dofs_per_cell == 0), + ExcNonInterpolatingFE()); + } + } + } // Find the support points on a cell that - // are mentioned multiple times in - // unit_support_points. Mark the first - // representative of each support point - // mentioned multiple times by appending - // its dof index to dofs_of_rep_points. + // are mentioned multiple times, and ony add + // each once. // Each multiple point gets to know the dof // index of its representative point by the // dof_to_rep_dof_table. - // the following vector collects all dofs i, + // the following vector collects all unit support points p[i], // 0<=i > dofs_of_rep_points(fe.size()); + std::vector > > rep_unit_support_points (fe.size()); // the following table converts a dof i // to the rep index. std::vector > dof_to_rep_index_table(fe.size()); @@ -157,31 +156,43 @@ namespace VectorTools { for (unsigned int i=0; i0; --j) - if (unit_support_points[fe_index][i] - == unit_support_points[fe_index][dofs_of_rep_points[fe_index][j-1]]) - { - dof_to_rep_index_table[fe_index].push_back(j-1); - representative=false; - break; - } + const unsigned int component + = fe[fe_index].system_to_component_index(i).first; + if (component_mask[component] == true) + { + Point dof_support_point = fe[fe_index].unit_support_point(i); + + bool representative=true; + // the following loop is looped + // the other way round to get + // the minimal effort of + // O(fe.dofs_per_cell) for multiple + // support points that are placed + // one after the other. + for (unsigned int j=rep_unit_support_points[fe_index].size(); j>0; --j) + if (dof_support_point + == rep_unit_support_points[fe_index][j-1]) + { + dof_to_rep_index_table[fe_index].push_back(j-1); + representative=false; + break; + } - if (representative) + if (representative) + { + dof_to_rep_index_table[fe_index].push_back(rep_unit_support_points[fe_index].size()); + rep_unit_support_points[fe_index].push_back(dof_support_point); + ++n_rep_points[fe_index]; + } + } + else { - dof_to_rep_index_table[fe_index].push_back(dofs_of_rep_points[fe_index].size()); - dofs_of_rep_points[fe_index].push_back(i); - ++n_rep_points[fe_index]; + // If correct component not to be interpolated, append invalid index to in table + dof_to_rep_index_table[fe_index].push_back(numbers::invalid_dof_index); } } - Assert(dofs_of_rep_points[fe_index].size()==n_rep_points[fe_index], + Assert(rep_unit_support_points[fe_index].size()==n_rep_points[fe_index], ExcInternalError()); Assert(dof_to_rep_index_table[fe_index].size()==fe[fe_index].dofs_per_cell, ExcInternalError()); @@ -205,7 +216,7 @@ namespace VectorTools // to feed it into FEValues hp::QCollection support_quadrature; for (unsigned int fe_index=0; fe_index(unit_support_points[fe_index])); + support_quadrature.push_back (Quadrature(rep_unit_support_points[fe_index])); // Transformed support points are computed by // FEValues @@ -224,15 +235,9 @@ namespace VectorTools // get location of finite element // support_points fe_values.reinit(cell); - const std::vector > &support_points = + const std::vector > &rep_support_points = fe_values.get_present_fe_values().get_quadrature_points(); - // pick out the representative - // support points - rep_points.resize (dofs_of_rep_points[fe_index].size()); - for (unsigned int j=0; jget_dof_indices (dofs_on_cell); @@ -246,7 +251,7 @@ namespace VectorTools function_values_system[fe_index] .resize (n_rep_points[fe_index], Vector (fe[fe_index].n_components())); - function.vector_value_list (rep_points, + function.vector_value_list (rep_support_points, function_values_system[fe_index]); // distribute the function // values to the global @@ -269,7 +274,7 @@ namespace VectorTools // which is the only component // in the function anyway function_values_scalar[fe_index].resize (n_rep_points[fe_index]); - function.value_list (rep_points, + function.value_list (rep_support_points, function_values_scalar[fe_index], 0); // distribute the function