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waitbar.m: Use Octave coding conventions. * scripts/plot/waitbar.m: Rename 'retval' to 'h' to match documentation. Use 'hf', 'hp' for figure and patch graphics handles.
author Rik <rik@octave.org>
date Thu, 19 Sep 2013 14:26:47 -0700
parents bc924baa2c4e
children cd98a50bfa63
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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72c96de7a403 maint: update copyright notices for 2012
John W. Eaton <jwe@octave.org>
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1 ## Copyright (C) 2007-2012 Michael Goffioul
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2 ##
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3 ## This file is part of Octave.
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4 ##
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5 ## Octave is free software; you can redistribute it and/or modify it
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6 ## under the terms of the GNU General Public License as published by
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7 ## the Free Software Foundation; either version 3 of the License, or (at
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8 ## your option) any later version.
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9 ##
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10 ## Octave is distributed in the hope that it will be useful, but
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11 ## WITHOUT ANY WARRANTY; without even the implied warranty of
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12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 ## General Public License for more details.
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14 ##
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15 ## You should have received a copy of the GNU General Public License
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16 ## along with Octave; see the file COPYING. If not, see
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17 ## <http://www.gnu.org/licenses/>.
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18
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19 ## -*- texinfo -*-
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20 ## @deftypefn {Command} {} hidden
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21 ## @deftypefnx {Command} {} hidden "on"
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22 ## @deftypefnx {Command} {} hidden "off"
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23 ## @deftypefnx {Function File} {@var{mode} =} hidden (@dots{})
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24 ## Control mesh hidden line removal.
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25 ##
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26 ## When called with no argument the hidden line removal state is toggled.
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27 ## When called with one of the modes @qcode{"on"} or @qcode{"off"} the state
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28 ## is set accordingly.
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29 ##
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30 ## The optional output argument @var{mode} is the current state.
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31 ##
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32 ## Hidden Line Removal determines what graphic objects behind a mesh plot
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33 ## are visible. The default is for the mesh to be opaque and lines behind
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34 ## the mesh are not visible. If hidden line removal is turned off then
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35 ## objects behind the mesh can be seen through the faces (openings) of the
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36 ## mesh, although the mesh grid lines are still opaque.
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37 ##
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38 ## @seealso{mesh, meshc, meshz, ezmesh, ezmeshc, trimesh, waterfall}
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39 ## @end deftypefn
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40
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41 function state = hidden (mode = "toggle")
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42
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43 if (nargin > 2)
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44 print_usage ();
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45 elseif (nargin == 1)
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46 if (! ischar (mode))
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47 error ("hidden: expecting MODE to be a string");
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48 elseif (! any (strcmpi (mode, {"on", "off"})))
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49 error ('hidden: MODE must be "on" or "off"');
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50 endif
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51 endif
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52
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53 for h = (get (gca (), "children")).';
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54 htype = get (h, "type");
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55 if (strcmp (htype, "surface"))
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56 fc = get (h, "facecolor");
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57 if ((! ischar (fc) && is_white (fc))
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58 || (ischar (fc) && strcmp (fc, "none")))
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59 switch (mode)
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60 case "on"
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61 set (h, "facecolor", "w");
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62 case "off"
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63 set (h, "facecolor", "none");
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64 case "toggle"
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65 if (ischar (fc))
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66 set (h, "facecolor", "w");
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67 mode = "on";
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68 else
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69 set (h, "facecolor", "none");
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70 mode = "off";
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71 endif
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72 endswitch
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73 endif
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74 endif
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75 endfor
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76
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77 if (nargout > 0)
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78 state = mode;
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79 endif
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80
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81 endfunction
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82
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83 function retval = is_white (color)
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84 retval = all (color == 1);
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85 endfunction
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86