diff scripts/plot/fill.m @ 7020:e31f12bb9194

[project @ 2007-10-13 05:13:28 by dbateman]
author dbateman
date Sat, 13 Oct 2007 05:13:29 +0000
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+## Copyright (C) 2007  David Bateman
+##
+## This file is part of Octave.
+##
+## Octave 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.
+##
+## Octave 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 Octave; see the file COPYING.  If not, see
+## <http://www.gnu.org/licenses/>.
+
+## -*- texinfo -*-
+## @deftypefn {Function File} {} fill (@var{x}, @var{y}, @var{c})
+## @deftypefnx {Function File} {} fill (@var{x1}, @var{y1}, @var{c1}, @var{x2}, @var{y2}, @var{c2})
+## @deftypefnx {Function File} {} fill (@dots{}, @var{prop}, @var{val})
+## @deftypefnx {Function File} {} fill (@var{h}, @dots{})
+## @deftypefnx {Function File} {@var{h} = } fill (@dots{})
+## Create one or more filled patch objects, returning a patch object for each.
+## @end deftypefn
+
+function h = fill (varargin)
+
+  htmp = [];
+
+  if (isscalar (varargin{1}) && ishandle (varargin{1}))
+    h = varargin {1};
+    if (! strcmp (get (h, "type"), "axes"))
+      error ("fill: expecting first argument to be an axes object");
+    endif
+
+    iargs = __find_patches__ (varargin{:}) + 1;
+    oldh = gca ();
+    unwind_protect
+      axes (h);
+
+      for i = 1 : length (iargs)
+	if (i == length (iargs))
+	  args = varargin (iargs(i):end);
+        else
+	  args = varargin (iargs(i):iargs(i+1)-1);
+	endif
+
+	[tmp, fail] = __patch__ (h, args{:});
+	if (fail)
+	  print_usage();
+	endif
+	htmp (end + 1) = tmp;
+      endfor
+    unwind_protect_cleanup
+      axes (oldh);
+    end_unwind_protect
+  else
+    iargs = __find_patches__ (varargin{:});
+    for i = 1 : length (iargs)
+      if (i == length (iargs))
+	args = varargin (iargs(i):end);
+      else
+        args = varargin (iargs(i):iargs(i+1)-1);
+      endif
+      [tmp, fail] = __patch__ (gca (), args{:});
+      if (fail)
+	print_usage();
+      endif
+      htmp (end + 1) = tmp;
+    endfor
+  endif
+  if (nargout > 0)
+    h = htmp;
+  endif
+endfunction
+
+function iargs = __find_patches__ (varargin)
+  iargs = [];
+  i = 1;
+  while (i < nargin)
+    iargs (end + 1) = i;
+    if (ischar (varargin {i}) && (strcmp (tolower (varargin{i}), "faces") || 
+				  strcmp (tolower (varargin{i}), "vertices")))
+      i += 4;
+    elseif (isnumeric (varargin {i}))
+      i += 2;
+    endif
+
+    if (i <= nargin)
+      while (true);
+	if (ischar (varargin {i}) && 
+	    (strcmp (tolower (varargin{i}), "faces") || 
+	     strcmp (tolower (varargin{i}), "vertices")))
+	  break;
+	elseif (isnumeric (varargin {i}))
+	  ## Assume its the colorspec
+	  i++;
+	  break;
+	elseif (ischar (varargin {i}))
+	  colspec = tolower (varargin {i});
+	  collen = length (colspec);
+
+	  if (strncmp (colspec, "blue", collen) ||
+	      strncmp (colspec, "black", collen) ||
+	      strncmp (colspec, "k", collen) ||
+	      strncmp (colspec, "black", collen) ||
+	      strncmp (colspec, "red", collen) ||
+	      strncmp (colspec, "green", collen) ||
+	      strncmp (colspec, "yellow", collen) ||
+	      strncmp (colspec, "magenta", collen) ||
+	      strncmp (colspec, "cyan", collen) ||
+	      strncmp (colspec, "white", collen))
+	    i++;
+	    break;
+	  endif
+	else
+	  i += 2;
+	endif
+      endwhile
+    endif
+  endwhile
+endfunction
+
+%!demo
+%! close all;
+%! t1 = (1/16:1/8:1)'*2*pi;
+%! t2 = ((1/16:1/8:1)' + 1/32)*2*pi;
+%! x1 = sin(t1) - 0.8;
+%! y1 = cos(t1);
+%! x2 = sin(t2) + 0.8;
+%! y2 = cos(t2);
+%! h = fill(x1,y1,'r',x2,y2,'g')