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+## Copyright (C) 2014 Andreas Weber
+##
+## 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  {Command} {} rotate3d
+## @deftypefnx {Command} {} rotate3d on
+## @deftypefnx {Command} {} rotate3d off
+## @deftypefnx {Function File} {} rotate3d (@var{hax}, @dots{})
+## Control 3D rotation mode of interactive graph in GUI.
+##
+## The function state input may be either @qcode{"on"} or @qcode{"off"}
+## and can only be set for 3D plots.
+##
+## If the first argument @var{hax} is an axes handle, then operate on
+## this axis rather than the current axes returned by @code{gca}.
+##
+## To query the current mode use the @code{get} function.  For example:
+## @example
+## mode = get (gca, "rotate3d");
+## @end example
+## @seealso{pan}
+## @end deftypefn
+
+function rotate3d (varargin)
+
+  if (numel (varargin) > 0 && isaxes (varargin{1}))
+    hax = varargin{1};
+    varargin(1) = [];
+  else
+    hax = gca ();
+  endif
+
+  toolkit = get (ancestor (hax, "figure"), "__graphics_toolkit__");
+  if (! strcmp (toolkit, "fltk"))
+    warning ("rotate3d: Only implemented for graphics_toolkit FLTK");
+  endif
+
+  ndims = __calc_dimensions__ (hax);
+  if (ndims == 2)
+    warning ("rotate3d: Only available for 3D plots");
+  else
+    if (numel (varargin) > 1)
+      print_usage ();
+    elseif (numel (varargin) == 0)
+      # toggle
+      m = get (hax, "pan");
+      if (strcmp (get (hax, "rotate3d"), "on"))
+        set (hax, "rotate3d", "off");
+      else
+        set (hax, "rotate3d", "on");
+      endif
+    elseif (numel (varargin) == 1)
+      set (hax, "rotate3d", varargin{1});
+    endif
+  endif
+
+endfunction
+