Mercurial > hg > octave-lyh
annotate scripts/plot/rectangle.m @ 17051:3e1b24a2454a
cylinder.m, ellipsoid.m, rectangle.m, sphere.m: Update to use new __plt_get_axis_arg__.
* scripts/plot/cylinder.m, scripts/plot/ellipsoid.m, scripts/plot/rectangle.m,
scripts/plot/sphere.m: Update to use new __plt_get_axis_arg__.
Rename ax to hax.
| author | Pantxo Diribarne <pantxo.diribarne@gmail.com> |
|---|---|
| date | Tue, 23 Jul 2013 16:06:07 +0200 |
| parents | 5d3a684236b0 |
| children | eaab03308c0b |
| rev | line source |
|---|---|
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1 ## Copyright (C) 2012 David Bateman |
| 12697 | 2 ## |
| 3 ## This file is part of Octave. | |
| 4 ## | |
| 5 ## Octave is free software; you can redistribute it and/or modify it | |
| 6 ## under the terms of the GNU General Public License as published by | |
| 7 ## the Free Software Foundation; either version 3 of the License, or (at | |
| 8 ## your option) any later version. | |
| 9 ## | |
| 10 ## Octave is distributed in the hope that it will be useful, but | |
| 11 ## WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 ## General Public License for more details. | |
| 14 ## | |
| 15 ## You should have received a copy of the GNU General Public License | |
| 16 ## along with Octave; see the file COPYING. If not, see | |
| 17 ## <http://www.gnu.org/licenses/>. | |
| 18 | |
| 19 ## -*- texinfo -*- | |
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20 ## @deftypefn {Function File} {} rectangle () |
| 12697 | 21 ## @deftypefnx {Function File} {} rectangle (@dots{}, "Position", @var{pos}) |
| 22 ## @deftypefnx {Function File} {} rectangle (@dots{}, "Curvature", @var{curv}) | |
| 23 ## @deftypefnx {Function File} {} rectangle (@dots{}, "EdgeColor", @var{ec}) | |
| 24 ## @deftypefnx {Function File} {} rectangle (@dots{}, "FaceColor", @var{fc}) | |
| 25 ## @deftypefnx {Function File} {@var{h} =} rectangle (@dots{}) | |
| 26 ## | |
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27 ## Draw rectangular patch defined by @var{pos} and @var{curv}. The variable |
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28 ## @code{@var{pos}(1:2)} defines the lower left-hand corner of the patch |
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29 ## and @code{@var{pos}(3:4)} defines its width and height. By default, the |
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30 ## value of @var{pos} is @code{[0, 0, 1, 1]}. |
| 12697 | 31 ## |
| 32 ## The variable @var{curv} defines the curvature of the sides of the rectangle | |
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33 ## and may be a scalar or two-element vector with values between 0 and 1. |
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34 ## A value of 0 represents no curvature of the side, whereas a value of 1 |
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35 ## means that the side is entirely curved into the arc of a circle. |
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36 ## If @var{curv} is a two-element vector, then the first element is the |
| 12697 | 37 ## curvature along the x-axis of the patch and the second along y-axis. |
| 38 ## | |
| 39 ## If @var{curv} is a scalar, it represents the curvature of the shorter of the | |
| 40 ## two sides of the rectangle and the curvature of the other side is defined | |
| 41 ## by | |
| 42 ## | |
| 43 ## @example | |
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44 ## min (pos (1:2)) / max (pos (1:2)) * curv |
| 12697 | 45 ## @end example |
| 46 ## | |
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47 ## Other properties are passed to the underlying patch command. |
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48 ## |
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49 ## The optional return value @var{h} is a graphics handle to the created |
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50 ## rectangle object. |
| 12697 | 51 ## @end deftypefn |
| 52 ## @seealso{patch} | |
| 53 | |
| 54 function h = rectangle (varargin) | |
| 55 | |
| 56 [hax, varargin] = __plt_get_axis_arg__ ("rectangle", varargin{:}); | |
| 57 | |
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58 oldfig = ifelse (isempty (hax), [], get (0, "currentfigure")); |
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59 unwind_protect |
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60 hax = newplot (hax); |
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61 |
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62 htmp = __rectangle__ (hax, varargin{:}); |
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63 |
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64 unwind_protect_cleanup |
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65 if (! isempty (oldfig)) |
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66 set (0, "currentfigure", oldfig); |
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67 endif |
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68 end_unwind_protect |
| 12697 | 69 |
| 70 if (nargout > 0) | |
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cylinder.m, ellipsoid.m, rectangle.m, sphere.m: Update to use new __plt_get_axis_arg__.
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71 h = htmp; |
| 12697 | 72 endif |
| 73 endfunction | |
| 74 | |
| 75 function hg = __rectangle__ (hax, varargin) | |
| 76 | |
| 77 iarg = 1; | |
| 78 pos = [0, 0, 1, 1]; | |
| 79 curv2 = [0, 0]; | |
| 80 ec = [0, 0, 0]; | |
| 81 fc = "none"; | |
| 82 | |
| 83 while (iarg < length (varargin)) | |
| 84 arg = varargin{iarg}; | |
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85 if (ischar (arg)) |
| 12697 | 86 if (strcmpi (arg, "position")) |
| 87 pos = varargin{iarg+1}; | |
| 88 varargin(iarg:iarg+1) = []; | |
| 89 if (!isvector (pos) || numel (pos) != 4) | |
| 90 error ("rectangle: position must be a 4 element vector"); | |
| 91 endif | |
| 92 elseif (strcmpi (arg, "curvature")) | |
| 93 curv2 = varargin{iarg+1}; | |
| 94 varargin(iarg:iarg+1) = []; | |
| 95 if (!isnumeric (curv2) || (numel (curv2) != 1 && numel (curv2) != 2)) | |
| 96 error ("rectangle: curvature must be a 2 element vector or a scalar"); | |
| 97 endif | |
| 98 if (any (curv2 < 0) || any (curv2 > 1)) | |
| 99 error ("rectangle: curvature values must be between 0 and 1"); | |
| 100 endif | |
| 101 elseif (strcmpi (arg, "edgecolor")) | |
| 102 ec = varargin{iarg+1}; | |
| 103 varargin(iarg:iarg+1) = []; | |
| 104 elseif (strcmpi (arg, "facecolor")) | |
| 105 fc = varargin{iarg+1}; | |
| 106 varargin(iarg:iarg+1) = []; | |
| 107 else | |
| 108 iarg ++; | |
| 109 endif | |
| 110 else | |
| 111 iarg ++; | |
| 112 endif | |
| 113 endwhile | |
| 114 | |
| 115 if (numel (curv2) == 1) | |
| 116 [a, ai] = min (pos (3 : 4)); | |
| 117 [b, bi] = max (pos (3 : 4)); | |
| 118 if (ai < bi) | |
| 119 curv = [curv2, curv2 .* a ./ b]; | |
| 120 else | |
| 121 curv = [curv2 .* a ./ b, curv2]; | |
| 122 endif | |
| 123 else | |
| 124 curv = curv2; | |
| 125 endif | |
| 126 | |
| 127 if (all (curv) < 0.01) | |
| 128 ## Special case : no curvature | |
| 129 x = [pos(1), pos(1) + pos(3), pos(1) + pos(3), pos(1), pos(1)]; | |
| 130 y = [pos(2), pos(2), pos(2) + pos(4), pos(2) + pos(4), pos(2)]; | |
| 131 else | |
| 132 p = pi / 2 * [0 : 15] / 15; | |
| 133 c = curv .* pos(3 : 4) / 2; | |
| 134 cx = c(1) * sin (p) - c(1); | |
| 135 cy = c(2) * cos (p) - c(2); | |
| 136 x = [pos(1) - fliplr(cx), pos(1) + pos(3) + cx, ... | |
| 137 pos(1) + pos(3) + fliplr(cx), pos(1) - cx, pos(1)]; | |
| 138 y = [pos(2) - fliplr(cy), pos(2) - cy, pos(2) + pos(4) + fliplr(cy), ... | |
| 139 pos(2) + pos(4) + cy, pos(2) + c(2)]; | |
| 140 endif | |
| 141 | |
| 142 hg = hggroup (); | |
| 143 | |
| 144 h = patch ("xdata", x(:), "ydata", y(:), "facecolor", fc, "edgecolor", ec, ... | |
| 145 "parent", hg, varargin{:}); | |
| 146 | |
| 147 addproperty ("curvature", hg, "data", curv2); | |
| 148 addproperty ("position", hg, "data", pos); | |
| 149 addproperty ("edgecolor", hg, "patchedgecolor", get (h, "edgecolor")); | |
| 150 addproperty ("linewidth", hg, "patchlinewidth", get (h, "linewidth")); | |
| 151 addproperty ("linestyle", hg, "patchlinestyle", get (h, "linestyle")); | |
| 152 addproperty ("facecolor", hg, "patchfacecolor", get (h, "facecolor")); | |
| 153 | |
| 154 addlistener (hg, "curvature", @update_data); | |
| 155 addlistener (hg, "position", @update_data); | |
| 156 addlistener (hg, "edgecolor", @update_props); | |
| 157 addlistener (hg, "linewidth", @update_props); | |
| 158 addlistener (hg, "linestyle", @update_props); | |
| 159 addlistener (hg, "facecolor", @update_props); | |
| 160 endfunction | |
| 161 | |
| 162 function update_data (h, d) | |
| 163 persistent recursion = false; | |
| 164 | |
| 165 ## Don't allow recursion | |
| 166 if (!recursion) | |
| 167 unwind_protect | |
| 168 recursion = true; | |
| 169 | |
| 170 kids = get (h, "children"); | |
| 171 pos = get (h, "position"); | |
| 172 curv2 = get (h, "curvature"); | |
| 173 | |
| 174 if (numel (curv2) == 1) | |
| 175 [a, ai] = min (pos (3 : 4)); | |
| 176 [b, bi] = max (pos (3 : 4)); | |
| 177 if (ai < bi) | |
| 178 curv = [curv2, curv2 .* a ./ b]; | |
| 179 else | |
| 180 curv = [curv2 .* a ./ b, curv2]; | |
| 181 endif | |
| 182 else | |
| 183 curv = curv2; | |
| 184 endif | |
| 185 | |
| 186 if (all (curv) < 0.01) | |
| 187 ## Special case : no curvature | |
| 188 x = [pos(1), pos(1) + pos(3), pos(1) + pos(3), pos(1), pos(1)]; | |
| 189 y = [pos(2), pos(2), pos(2) + pos(4), pos(2) + pos(4), pos(2)]; | |
| 190 else | |
| 191 p = pi / 2 * [0 : 15] / 15; | |
| 192 c = curv .* pos(3 : 4) / 2; | |
| 193 cx = c(1) * sin (p) - c(1); | |
| 194 cy = c(2) * cos (p) - c(2); | |
| 195 x = [pos(1) - fliplr(cx), pos(1) + pos(3) + cx, ... | |
| 196 pos(1) + pos(3) + fliplr(cx), pos(1) - cx, pos(1)]; | |
| 197 y = [pos(2) - fliplr(cy), pos(2) - cy, pos(2) + pos(4) + fliplr(cy), ... | |
| 198 pos(2) + pos(4) + cy, pos(2) + c(2)]; | |
| 199 endif | |
| 200 | |
| 201 set (kids, "xdata", x, "ydata", y); | |
| 202 unwind_protect_cleanup | |
| 203 recursion = false; | |
| 204 end_unwind_protect | |
| 205 endif | |
| 206 endfunction | |
| 207 | |
| 208 function update_props (h, d) | |
| 209 kids = get (h, "children"); | |
| 210 set (kids, "edgecolor", get (h, "edgecolor"), | |
| 211 "linewidth", get (h, "linewidth"), | |
| 212 "linestyle", get (h, "linestyle"), | |
| 213 "facecolor", get (h, "facecolor")); | |
| 214 endfunction | |
| 215 | |
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216 |
| 12697 | 217 %!demo |
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218 %! clf; |
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219 %! axis equal; |
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220 %! rectangle ('Position', [0.05, 0.05, 0.9, 0.9], 'Curvature', [0.5, 0.5]); |
| 12697 | 221 |
| 222 %!demo | |
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223 %! clf; |
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224 %! axis equal; |
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225 %! rectangle ('Position', [0.05, 0.05, 0.9, 0.4], 'Curvature', 1.0); |
| 12697 | 226 |
| 227 %!demo | |
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228 %! clf; |
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229 %! axis equal; |
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230 %! h = rectangle ('Position', [0.05, 0.05, 0.9, 0.4], 'Curvature', 1.0); |
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231 %! set (h, 'FaceColor', [0, 1, 0]); |
| 12697 | 232 |