## 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 2 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, write to the Free Software
## Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

## -*- texinfo -*-
## @deftypefn {Function File} {} win16 (@var{n})
## Create color colormap. 
## (repeated windows 16 color palette)
## The argument @var{n} should be a scalar.  If it
## is omitted, the length of the current colormap or 64 is assumed.
## @end deftypefn
## @seealso{colormap}

## Author:  Florian Muecke <f_muecke[AT]gmx.de>

function map = win16 (number)
## this colormap is not part of matlab, it is like the prism
## colormap map but with a continuous map

  global __current_color_map__

  if (nargin == 0)
    if exist ("__current_color_map__")
      number = rows (__current_color_map__);
    else
      number = 64;
    endif
  elseif (nargin == 1)
    if (! is_scalar (number))
      error ("win16: argument must be a scalar");
    endif
  else
    usage ("win16 (number)");
  endif

  map = [0, 0, 0;
        0.5, 0, 0;
        0, 0.5, 0;
        0.5, 0.5, 0;
        0, 0, 0.5;
        0.5, 0, 0.5;
        0, 0.5, 0.5;
        0.75, 0.75, 0.75;
        0.5, 0.5, 0.5;
        1, 0, 0;
 	    0, 1, 0;
 	    1, 1, 0;
 	    0, 0, 1;
 	    1, 0, 1;
 	    0, 1, 1;
 	    1, 1, 1;];
  map(17:32,:) = map;
  map(33:64,:) = map;

endfunction
