--- /dev/null
+//---------------------------- crash_11.cc ---------------------------
+// $Id: crash_11.cc 12732 2006-03-28 23:15:45Z wolf $
+// Version: $Name$
+//
+// Copyright (C) 2006 by the deal.II authors
+//
+// This file is subject to QPL and may not be distributed
+// without copyright and license information. Please refer
+// to the file deal.II/doc/license.html for the text and
+// further information on this license.
+//
+//---------------------------- crash_11.cc ---------------------------
+
+
+// a test where a degree of freedom was constrained multiple times,
+// but with different weights. see the hp paper for more on this
+
+char logname[] = "crash_11/output";
+
+
+#include "../tests.h"
+#include <base/function.h>
+#include <base/logstream.h>
+#include <base/quadrature_lib.h>
+#include <lac/vector.h>
+
+#include <grid/tria.h>
+#include <dofs/hp_dof_handler.h>
+#include <dofs/dof_constraints.h>
+#include <grid/grid_generator.h>
+#include <grid/grid_refinement.h>
+#include <grid/tria_accessor.h>
+#include <grid/tria_iterator.h>
+#include <grid/tria_boundary_lib.h>
+#include <dofs/dof_accessor.h>
+#include <dofs/dof_tools.h>
+#include <numerics/vectors.h>
+#include <fe/fe_q.h>
+
+#include <fstream>
+#include <vector>
+
+
+
+int main ()
+{
+ std::ofstream logfile(logname);
+ logfile.precision (3);
+
+ deallog.attach(logfile);
+ deallog.depth_console(0);
+ deallog.threshold_double(1.e-10);
+
+
+ // create a mesh like this (viewed
+ // from top):
+ //
+ // *---*---*
+ // | 2 | 3 |
+ // *---*---*
+ // | 0 | 1 |
+ // *---*---*
+ Triangulation<3> triangulation;
+ std::vector<unsigned int> subdivisions (3, 2);
+ subdivisions[2] = 1;
+ GridGenerator::subdivided_hyper_rectangle (triangulation, subdivisions,
+ Point<3>(), Point<3>(2,2,1));
+
+ hp::FECollection<3> fe;
+ fe.push_back (FE_Q<3>(1));
+ fe.push_back (FE_Q<3>(2));
+ fe.push_back (FE_Q<3>(3));
+ fe.push_back (FE_Q<3>(4));
+
+ hp::DoFHandler<3> dof_handler(triangulation);
+
+ // assign polynomial degrees like this:
+ //
+ // *---*---*
+ // | 1 | 2 |
+ // *---*---*
+ // | 4 | 3 |
+ // *---*---*
+ //
+ hp::DoFHandler<3>::active_cell_iterator
+ cell = dof_handler.begin_active();
+ cell->set_active_fe_index (0);
+ ++cell;
+ cell->set_active_fe_index (1);
+ ++cell;
+ cell->set_active_fe_index (2);
+ ++cell;
+ cell->set_active_fe_index (3);
+
+ dof_handler.distribute_dofs (fe);
+
+ // for illustrative purposes, print
+ // out the numbers of the dofs that
+ // belong to the shared edge
+ // (that's the one that has four
+ // different fe indices associated
+ // with it)
+ for (hp::DoFHandler<3>::active_line_iterator line = dof_handler.begin_active_line();
+ line != dof_handler.end_line(); ++line)
+ if (line->n_active_fe_indices() == 4)
+ {
+ deallog << "Shared line: " << line << std::endl;
+ for (unsigned int i=0; i<4; ++i)
+ {
+ deallog << "DoF indices for fe_index=" << i << ": ";
+ std::vector<unsigned int> line_dofs (fe[i].dofs_per_line + 2*fe[i].dofs_per_vertex);
+ line->get_dof_indices (line_dofs, i);
+ for (unsigned int j=0; j<fe[i].dofs_per_line + 2*fe[i].dofs_per_vertex; ++j)
+ deallog << line_dofs[j] << ' ';
+ deallog << std::endl;
+ }
+ }
+ ConstraintMatrix constraints;
+ DoFTools::make_hanging_node_constraints (dof_handler,
+ constraints);
+ constraints.close ();
+
+ constraints.print (deallog.get_file_stream());
+}
+