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/*
Copyright (C) 2013 Marco Vassallo <gedeone-octave@users.sourceforge.net>
This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software
Foundation; either version 3 of the License, or (at your option) any later
version.
This program 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 General Public License for more
details.
You should have received a copy of the GNU General Public License along with
this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include "functionspace.h"
DEFUN_DLD (SubSpace, args, , "-*- texinfo -*-\n\
@deftypefn {Function File} {[@var{V1}]} = \
SubSpace (@var{Space V}, @var{index}(Optional)) \n\
The input arguments are\n\
@itemize @bullet\n\
@item @var{Space V} which is a mixed FunctionalSpace\n\
@item @var{index} represents the subSpace which you want to extract; index\
should be a positive integer.\n\
@end itemize \n\
The output @var{V0} is the SubSpace you need\n\
@seealso{FunctionSpace}\n\
@end deftypefn")
{
int nargin = args.length ();
octave_value retval;
if (nargin < 2 || nargin > 2)
print_usage ();
else
{
if (! functionspace_type_loaded)
{
functionspace::register_type ();
functionspace_type_loaded = true;
mlock ();
}
if (args(0).type_id () == functionspace::static_type_id ())
{
const functionspace & fspo
= static_cast<const functionspace&> (args(0).get_rep ());
const octave_idx_type idx = args(1).int_value ();
if (! error_state)
{
const dolfin::FunctionSpace & V = fspo.get_fsp ();
if (idx < 1 || idx > V.dim ())
error ("SubSpace: index out of bounds");
else
{
std::cout << "Extracting subspace..." << std::endl;
boost::shared_ptr <const dolfin::FunctionSpace> g (new dolfin::SubSpace (V, idx - 1));
retval = new functionspace (g);
}
}
}
}
return retval;
}