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1 ## Copyright (C) 2007 John W. Eaton, Shai Ayal, 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 2, or (at your option) |
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8 ## 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, write to the Free |
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17 ## Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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18 ## 02110-1301, USA. |
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19 |
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20 ## -*- texinfo -*- |
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21 ## @deftypefn {Function File} {} __patch__ (@var{p}, @var{x}, @var{y}, @var{c}) |
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22 ## Create patch object from @var{x} and @var{y} with color @var{c} and parent @var{p}. |
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23 ## Return handle to patch object. |
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24 ## @end deftypefn |
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25 |
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26 ## Author: Kai Habel |
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27 |
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28 function h = __patch__ (p, varargin) |
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29 |
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30 if (nargin < 1) |
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31 print_usage (); |
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32 endif |
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33 |
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34 nvargs = numel (varargin); |
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35 |
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36 if (nvargs > 1 && isnumeric (varargin{1}) && isnumeric (varargin{2})) |
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37 num_data_args = 2; |
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38 else |
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39 num_data_args = 0; |
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40 endif |
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41 |
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42 if (rem (nvargs - num_data_args - 1, 2) == 0 && nvargs > 2) |
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43 else |
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44 print_usage ("patch"); |
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45 endif |
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46 |
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47 x = varargin{1}; |
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48 y = varargin{2}; |
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49 c = varargin{3}; |
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50 |
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51 h = __go_patch__ (p); |
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52 ax = get (h, "parent"); |
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53 if (num_data_args > 1) |
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54 set (h, "xdata", x, "ydata", y); |
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55 endif |
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56 |
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57 if (isstr (c)) |
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58 ## Have color string. |
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59 set (h, "FaceColor", c); |
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60 elseif (length (c) == 1) |
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61 if (isnan (c)) |
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62 set (h, "FaceColor", [1, 1, 1]); |
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63 set (h, "CData", c); |
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64 elseif (isnumeric (c)) |
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65 ## Have color index. |
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66 set (h, "FaceColor", "flat"); |
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67 set (h, "CData", c); |
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68 |
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69 clim = get(ax, "CLim"); |
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70 if (c < clim(1)) |
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71 set (ax, "CLim", [c, clim(2)]) |
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72 endif |
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73 if (c > clim(2)) |
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74 set (ax, "CLim", [clim(1), c]) |
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75 end |
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76 |
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77 else |
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78 ## Unknown color value. |
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79 error ("color value not valid"); |
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80 end |
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81 elseif (length (c) == 3) |
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82 ## Have rgb/rgba value. |
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83 set (h, "FaceColor", c); |
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84 else |
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85 ## Color vector. |
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86 if (length (c) != length (x) || length (c) != length (y)) |
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87 error ("size of x, y, and c must be equal") |
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88 else |
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89 set (h, "FaceColor", "interp"); |
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90 set(h, "CData", c); |
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91 if (abs(max(c) - min(c)) < eps) |
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92 set (ax, "CLim", [c(1)-1, c(1)+1]) |
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93 else |
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94 set (ax, "CLim", [min(c), max(c)]); |
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95 end |
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96 end |
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97 end |
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98 |
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99 if (nvargs > num_data_args + 1) |
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100 set (h, varargin{num_data_args+2:end}); |
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101 endif |
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102 |
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103 endfunction |
