/*
 Copyright (C) 2014 Eugenio Gianniti <eugenio.gianniti@mail.polimi.it>

 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 <dolfin.h>
#include "subdomain.h"

DEFUN_DLD (SubDomain, args, nargout,
"-*- texinfo -*-\n\
@deftypefn {Function File} {[@var{subdomain}]} = \
SubDomain (@var{inside}, @var{boundary})\n\
Initialize a subdomain with a function handle, @var{inside}, and a binary \
flag. When the latter is true, @var{subdomain} will only contain boundary \
entities. @var{subdomain} can be used to mark a meshfunction. \n\
@seealso{mark, MeshFunction}\n\
@end deftypefn")
{
  int nargin = args.length ();
  octave_value retval;

  if (nargin < 2 || nargin > 2 || nargout > 1)
    { print_usage (); }
  else
    {
      if (args(0).is_function_handle () && args(1).is_bool_scalar ())
        {
          if (! subdomain_type_loaded)
            {
              subdomain::register_type ();
              subdomain_type_loaded = true;
              mlock ();
            }

          octave_fcn_handle * pfh = args(0).fcn_handle_value ();
          bool on_boundary = args(1).bool_value ();
          retval = new subdomain (*pfh, on_boundary);
        }
      else
        { error ("invalid input arguments"); }
    }

  return retval;
}