+# Copyright (C) 2012 Garth N. Wells
+# This file is part of DOLFIN.
+# DOLFIN is free software: you can 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 3 of the License, or
+# (at your option) any later version.
+# DOLFIN is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU Lesser General Public License for more details.
+# You should have received a copy of the GNU Lesser General Public License
+# along with DOLFIN. If not, see <http://www.gnu.org/licenses/>.
+# First added: 2012-02-02
+# This program generates a mesh for a polygonal domain that is
+# represented by a list of its vertices.
+# Modified 02-08-2013 Solveig Masvie
+ print "DOLFIN must be compiled with CGAL to run this demo."
+# Create list of polygonal domain vertices
+domain_vertices = [Point(0.0, 0.0),
+# Generate mesh and plot
+PolygonalMeshGenerator.generate(mesh, domain_vertices, 0.25);
+# Generate 3D mesh from OFF file input (tetrahedron)
+PolyhedralMeshGenerator.generate(mesh, "../tetrahedron.off", 0.05)
+# Generate 3D mesh from OFF file input (cube)
+PolyhedralMeshGenerator.generate(mesh, "../cube.off", 0.05)