--- /dev/null
+//---------------------------- project_01.cc ---------------------------
+// $Id$
+// 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.
+//
+//---------------------------- project_01.cc ---------------------------
+
+// check VectorTools::project for Vector<double> arguments
+
+
+#include "../tests.h"
+#include <base/function.h>
+#include <base/quadrature_lib.h>
+#include <lac/vector.h>
+#include <grid/tria.h>
+#include <grid/grid_generator.h>
+#include <grid/grid_tools.h>
+#include <dofs/dof_handler.h>
+#include <dofs/hp_dof_handler.h>
+#include <dofs/dof_constraints.h>
+#include <fe/fe_q.h>
+#include <numerics/vectors.h>
+#include <dofs/dof_accessor.h>
+
+#include <fstream>
+
+
+// define the multi-linear function x or x*y or x*y*z that we will
+// subsequently project onto the ansatz space
+template <int dim>
+class F : public Function<dim>
+{
+ public:
+ virtual double value (const Point<dim> &p,
+ const unsigned int = 0) const
+ {
+ double s = 1;
+ for (unsigned int i=0; i<dim; ++i)
+ s *= p[i];
+ return s;
+ }
+};
+
+
+template<int dim>
+void test()
+{
+ // create 2 triangulations with the
+ // same coarse grid, and refine
+ // them differently
+ Triangulation<dim> tria;
+
+ GridGenerator::hyper_cube (tria);
+ tria.refine_global (2);
+
+ FE_Q<dim> fe(1);
+ DoFHandler<dim> dh (tria);
+ dh.distribute_dofs (fe);
+
+ Vector<double> v(dh.n_dofs());
+
+ ConstraintMatrix cm;
+ cm.close ();
+ VectorTools::project (dh, cm, QGauss<dim>(3), F<dim>(),
+ v);
+
+ for (typename DoFHandler<dim>::active_cell_iterator cell=dh.begin_active();
+ cell != dh.end(); ++cell)
+ for (unsigned int i=0; i<GeometryInfo<dim>::vertices_per_cell; ++i)
+ {
+ // check that the error is
+ // somewhat small. it won't
+ // be zero since we project
+ // and do not interpolate
+ Assert (std::fabs (v(cell->vertex_dof_index(i,0)) -
+ F<dim>().value (cell->vertex(i)))
+ < 1e-4,
+ ExcInternalError());
+ deallog << cell->vertex(i) << ' ' << v(cell->vertex_dof_index(i,0))
+ << std::endl;
+ }
+}
+
+
+int main()
+{
+ std::ofstream logfile ("project_01/output");
+ deallog.attach(logfile);
+ deallog.depth_console(0);
+ deallog.threshold_double(1.e-10);
+
+// 1d is presently not implemented
+// test<1>();
+ test<2>();
+ test<3>();
+}
+
--- /dev/null
+
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--- /dev/null
+//---------------------------- project_02.cc ---------------------------
+// $Id$
+// 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.
+//
+//---------------------------- project_02.cc ---------------------------
+
+// check VectorTools::project for BlockVector<double> arguments
+
+
+#include "../tests.h"
+#include <base/function.h>
+#include <base/quadrature_lib.h>
+#include <lac/block_vector.h>
+#include <grid/tria.h>
+#include <grid/grid_generator.h>
+#include <grid/grid_tools.h>
+#include <dofs/dof_handler.h>
+#include <dofs/hp_dof_handler.h>
+#include <dofs/dof_constraints.h>
+#include <fe/fe_q.h>
+#include <numerics/vectors.h>
+#include <dofs/dof_accessor.h>
+
+#include <fstream>
+
+
+// define the multi-linear function x or x*y or x*y*z that we will
+// subsequently project onto the ansatz space
+template <int dim>
+class F : public Function<dim>
+{
+ public:
+ virtual double value (const Point<dim> &p,
+ const unsigned int = 0) const
+ {
+ double s = 1;
+ for (unsigned int i=0; i<dim; ++i)
+ s *= p[i];
+ return s;
+ }
+};
+
+
+template<int dim>
+void test()
+{
+ // create 2 triangulations with the
+ // same coarse grid, and refine
+ // them differently
+ Triangulation<dim> tria;
+
+ GridGenerator::hyper_cube (tria);
+ tria.refine_global (2);
+
+ FE_Q<dim> fe(1);
+ DoFHandler<dim> dh (tria);
+ dh.distribute_dofs (fe);
+
+ BlockVector<double> v(2);
+ v.block(0).reinit (dh.n_dofs()/2);
+ v.block(1).reinit (dh.n_dofs()-dh.n_dofs()/2);
+ v.collect_sizes();
+
+ ConstraintMatrix cm;
+ cm.close ();
+ VectorTools::project (dh, cm, QGauss<dim>(3), F<dim>(),
+ v);
+
+ for (typename DoFHandler<dim>::active_cell_iterator cell=dh.begin_active();
+ cell != dh.end(); ++cell)
+ for (unsigned int i=0; i<GeometryInfo<dim>::vertices_per_cell; ++i)
+ {
+ // check that the error is
+ // somewhat small. it won't
+ // be zero since we project
+ // and do not interpolate
+ Assert (std::fabs (v(cell->vertex_dof_index(i,0)) -
+ F<dim>().value (cell->vertex(i)))
+ < 1e-4,
+ ExcInternalError());
+ deallog << cell->vertex(i) << ' ' << v(cell->vertex_dof_index(i,0))
+ << std::endl;
+ }
+}
+
+
+int main()
+{
+ std::ofstream logfile ("project_02/output");
+ deallog.attach(logfile);
+ deallog.depth_console(0);
+ deallog.threshold_double(1.e-10);
+
+// 1d is presently not implemented
+// test<1>();
+ test<2>();
+ test<3>();
+}
+
--- /dev/null
+
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