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__go_draw_axes__.m: Fix interpolation of facecolors.
author Ben Abbott <bpabbott@mac.com>
date Tue, 30 Sep 2008 16:09:09 -0400
parents f8514786c490
children 73d6b71788c0
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1 ## Copyright (C) 2006, 2007 Kai Habel
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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 {Function File} {} shading (@var{type})
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21 ## @deftypefnx {Function File} {} shading (@var{ax}, @dots{})
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22 ## Set the shading of surface or patch graphic objects. Valid arguments
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23 ## for @var{type} are
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24 ##
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25 ## @table @code
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26 ## @item "flat"
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27 ## Single colored patches with invisible edges.
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28 ##
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29 ## @item "faceted"
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30 ## Single colored patches with visible edges.
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31 ##
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32 ## @item "interp"
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33 ## Color between patch vertices are interpolated and the patch edges are
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34 ## invisible.
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35 ## @end table
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36 ##
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37 ## If @var{ax} is given the shading is applied to axis @var{ax} instead
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38 ## of the current axis.
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39 ## @end deftypefn
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40
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41 ## Author: Kai Habel <kai.habel@gmx.de>
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42
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43 ## PKG_ADD: mark_as_command shading
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44
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45 function shading (varargin)
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46
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47 [ax, varargin] = __plt_get_axis_arg__ ("shading", varargin{:});
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48
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49 if (nargin != 1 && nargin != 2)
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50 print_usage ();
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51 endif
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52
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53 mode = varargin{1};
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54
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55 h1 = findobj (ax, "type", "patch");
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56 h2 = findobj (ax, "type", "surface");
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57
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58 obj = [h1(:); h2(:)];
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59
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60 for n = 1:numel(obj)
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61 h = obj(n);
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62 if (strcmp (mode, "flat"))
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63 set (h, "facecolor", "flat");
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64 set (h, "edgecolor", "none");
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65 elseif (strcmp (mode, "interp"))
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66 set (h, "facecolor", "interp");
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67 set (h, "edgecolor", "none");
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68 elseif (strcmp (mode, "faceted"))
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69 set (h, "facecolor", "flat");
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70 set (h, "edgecolor", [0 0 0]);
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71 else
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72 error ("unknown argument");
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73 endif
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74 endfor
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75
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76 endfunction
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77
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78 %!demo
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79 %! figure(1); clf
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80 %! sombrero
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81 %! shading faceted
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82 %! title('shading "faceted"')
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83 %! figure(2); clf
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84 %! sombrero
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85 %! shading interp
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86 %! title('shading "interp"')
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87 %! figure (3); clf
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88 %! pcolor (peaks ())
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89 %! shading faceted
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90 %! title('shading "faceted"')
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91 %! figure (4); clf
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92 %! pcolor (peaks ())
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93 %! shading interp
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94 %! title('shading "interp"')