########################################################################
##
## Copyright (C) 2020 The Octave Project Developers
##
## See the file COPYRIGHT.md in the top-level directory of this
## distribution or <https://octave.org/copyright/>.
##
## 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
## <https://www.gnu.org/licenses/>.
##
########################################################################

## -*- texinfo -*-
## @deftypefn {} {[@dots{}] =} __tickangle__(@dots{})
## Undocumented internal function.
## @end deftypefn

function retval = __tickangle__ (caller, varargin)

  ax = tolower (caller(1));
  hax = [];
  switch (numel (varargin))
    case 0
      retval = get (gca (), [ax, "ticklabelrotation"]);
      return;

    case 1
      if (isaxes (varargin{1}))
        retval = get (varargin{1}, [ax, "ticklabelrotation"]);
        return;
      else
        arg = varargin{1};
      endif

    case 2
      if (! isaxes (varargin{1}))
        error ([caller, ": HAX must be a handle to an axes object"]);
      endif
      hax = varargin{1};
      arg = varargin{2};

    otherwise
      print_usage (caller);

  endswitch

  if (isempty (hax))
    hax = gca ();
  endif

  if (isscalar (arg) && isnumeric (arg) && isfinite (arg))
    if (nargout > 0)
      error ([caller, ": function called with too many outputs"]);
    endif

    set (hax, [ax, "ticklabelrotation"], arg);

  else
    print_usage (caller);
  endif

endfunction
