--- /dev/null
+// ---------------------------------------------------------------------
+//
+// Copyright (C) 2016 by the deal.II authors
+//
+// This file is part of the deal.II library.
+//
+// The deal.II library is free software; you can use it, redistribute
+// it, and/or modify it under the terms of the GNU Lesser General
+// Public License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+// The full text of the license can be found in the file LICENSE at
+// the top level of the deal.II distribution.
+//
+// ---------------------------------------------------------------------
+
+
+// Check that the quadrature points obtained through transform_unit_to_real
+// are the same of those given by FEValues
+
+
+#include "../tests.h"
+
+#include <deal.II/base/utilities.h>
+#include <deal.II/grid/tria.h>
+#include <deal.II/grid/grid_generator.h>
+#include <deal.II/grid/manifold_lib.h>
+#include <deal.II/dofs/dof_handler.h>
+#include <deal.II/fe/mapping_q_generic.h>
+#include <deal.II/fe/mapping_manifold.h>
+#include <deal.II/fe/fe_q.h>
+#include <deal.II/fe/fe_values.h>
+
+#include <fstream>
+
+template<int dim, int spacedim>
+void test()
+{
+ deallog << "dim=" << dim << ", spacedim=" << spacedim << std::endl;
+
+ Triangulation<dim, spacedim> triangulation;
+
+ const Point<2> center (7,9);
+ const Point<2> origin (0,0);
+ const double inner_radius = 0.5,
+ outer_radius = 1.0;
+ GridGenerator::hyper_shell (triangulation,
+ center, inner_radius, outer_radius,
+ 10);
+
+
+ static const SphericalManifold<dim> manifold(center);
+
+ triangulation.set_all_manifold_ids_on_boundary(0);
+ triangulation.set_manifold (0, manifold);
+ typename Triangulation<dim,spacedim>::active_cell_iterator
+ cell = triangulation.begin_active(),
+ endc = triangulation.end();
+ for (; cell!=endc; ++cell)
+ cell->set_all_manifold_ids (0);
+
+ const QGauss<spacedim> quadrature(1);
+
+ std::vector<Point<spacedim> > q_points_from_quadrature = quadrature.get_points();
+
+ FE_Q<dim,spacedim> fe(1);
+
+ DoFHandler<dim,spacedim> dof(tr);
+ dof.distribute_dofs(fe);
+
+
+ FEValues<dim,spacedim> fe_values (fe, quadrature,
+ update_quadrature_points);
+
+
+ MappingManifold<dim,spacedim> map_manifold;
+
+ cell = triangulation.begin_active();
+
+ for (; cell!=endc; ++cell)
+ {
+ fe_values.reinit(cell);
+ std::vector<Point<spacedim> > q_points_from_fe_values = fe_values.get_quadrature_points();
+ for (unsigned int q=0; q<q_points.size(); ++q)
+ {
+ const Point<spacedim> pq = map_manifold.transform_unit_to_real_cell(cell,q_points[q]);
+
+ AssertThrow(pq.distance(q_points_from_fe_values[q]) < 1e-10,
+ ExcInternalError());
+ }
+ }
+ deallog << "OK" << std::endl;
+}
+
+
+int
+main()
+{
+ std::ofstream logfile ("output");
+ deallog.attach(logfile);
+ deallog.threshold_double(1.e-10);
+
+
+ test<1,1>();
+ test<2,2>();
+ test<3,3>();
+
+ test<1,2>();
+ test<1,3>();
+ test<2,3>();
+
+ return 0;
+}
+
+
+