Mercurial > octave
view scripts/plot/appearance/hidden.m @ 27919:1891570abac8
update Octave Project Developers copyright for the new year
In files that have the "Octave Project Developers" copyright notice,
update for 2020.
author | John W. Eaton <jwe@octave.org> |
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date | Mon, 06 Jan 2020 22:29:51 -0500 |
parents | b442ec6dda5c |
children | bd51beb6205e |
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## Copyright (C) 2007-2020 The Octave Project Developers ## ## See the file COPYRIGHT.md in the top-level directory of this distribution ## or <https://octave.org/COPYRIGHT.html/>. ## ## ## 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 {} {} hidden ## @deftypefnx {} {} hidden on ## @deftypefnx {} {} hidden off ## @deftypefnx {} {@var{mode} =} hidden (@dots{}) ## Control mesh hidden line removal. ## ## When called with no argument the hidden line removal state is toggled. ## ## When called with one of the modes @qcode{"on"} or @qcode{"off"} the state ## is set accordingly. ## ## The optional output argument @var{mode} is the current state. ## ## Hidden Line Removal determines what graphic objects behind a mesh plot ## are visible. The default is for the mesh to be opaque and lines behind ## the mesh are not visible. If hidden line removal is turned off then ## objects behind the mesh can be seen through the faces (openings) of the ## mesh, although the mesh grid lines are still opaque. ## ## @seealso{mesh, meshc, meshz, ezmesh, ezmeshc, trimesh, waterfall} ## @end deftypefn function state = hidden (mode = "toggle") if (nargin > 2) print_usage (); elseif (nargin == 1) if (! ischar (mode)) error ("hidden: MODE must be a string"); elseif (! any (strcmpi (mode, {"on", "off"}))) error ('hidden: MODE must be "on" or "off"'); endif endif for h = (get (gca (), "children")).' [htype, htag] = get (h, {"type", "tag"}){:}; if (strcmp (htype, "surface") || strcmp (htag, "trimesh")) fc = get (h, "facecolor"); if ((! ischar (fc) && is_white (fc)) || (ischar (fc) && strcmp (fc, "none"))) switch (mode) case "on" set (h, "facecolor", "w"); case "off" set (h, "facecolor", "none"); case "toggle" if (ischar (fc)) set (h, "facecolor", "w"); mode = "on"; else set (h, "facecolor", "none"); mode = "off"; endif endswitch endif endif endfor if (nargout > 0) state = mode; endif endfunction function retval = is_white (color) retval = all (color == 1); endfunction