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annotate scripts/plot/util/__next_line_color__.m @ 20602:af5591ef9790 stable

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__gnuplot_drawnow__.m: Use "screenpixelsperinch" instead of constant value (bug #46122).
author ederag <edera@gmx.fr>
date Tue, 06 Oct 2015 11:07:10 +0200
parents 4197fc428c7d
children
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4197fc428c7d maint: Update copyright notices for 2015.
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1 ## Copyright (C) 2013-2015 Carl Osterwisch
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2 ## Copyright (C) 2007-2015 John W. Eaton
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3 ##
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4 ## This file is part of Octave.
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5 ##
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6 ## Octave is free software; you can redistribute it and/or modify it
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7 ## under the terms of the GNU General Public License as published by
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8 ## the Free Software Foundation; either version 3 of the License, or (at
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9 ## your option) any later version.
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10 ##
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11 ## Octave is distributed in the hope that it will be useful, but
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12 ## WITHOUT ANY WARRANTY; without even the implied warranty of
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13 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 ## General Public License for more details.
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15 ##
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16 ## You should have received a copy of the GNU General Public License
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17 ## along with Octave; see the file COPYING. If not, see
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18 ## <http://www.gnu.org/licenses/>.
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19
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20 ## -*- texinfo -*-
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21 ## @deftypefn {Function File} {@var{rgb} =} __next_line_color__ (@var{reset})
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22 ## Undocumented internal function.
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23 ## @end deftypefn
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24
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25 ## Return the next line color in the rotation.
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26
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27 ## Author: Carl Osterwisch
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28 ## Author: jwe
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30 function rgb = __next_line_color__ (reset)
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32 persistent reset_colors = true;
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34 if (nargin == 1)
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35 ## Indicates whether the next call will increment or not
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36 reset_colors = reset;
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37 else
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38 ## Find and return the next line color
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39 ca = gca ();
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40 colororder = get (ca, "colororder");
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41 if (reset_colors)
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42 color_index = 1;
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43 reset_colors = false;
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44 else
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45 ## Executed when "hold all" is active
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46 n_kids = length (get (ca, "children"));
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47 n_colors = rows (colororder);
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48 color_index = mod (n_kids, n_colors) + 1;
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49 endif
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50 rgb = colororder(color_index,:);
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51 endif
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52
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53 endfunction
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55
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56 %!test
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57 %! hf = figure ("visible", "off");
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58 %! unwind_protect
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59 %! hax = axes ();
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60 %! set (hax, "colororder", [1 0 0; 0 1 0; 0 0 1]);
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61 %! hold on;
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62 %! h = plot (1:5,1:5,'o', 1:4,1:4, "x", 1:3,1:3, "d");
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63 %! assert (get (h, "color"), {[1 0 0]; [0 1 0]; [0 0 1]});
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64 %! cla (hax);
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65 %! hold all;
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66 %! h1 = plot (1:5,1:5,'o');
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67 %! h2 = plot (1:4,1:4, "x");
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68 %! h3 = plot (1:3,1:3, "d");
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69 %! assert (get ([h1;h2;h3], "color"), {[1 0 0]; [0 1 0]; [0 0 1]});
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70 %! unwind_protect_cleanup
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71 %! close (hf);
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72 %! end_unwind_protect
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73