Mercurial > hg > octave-lyh
annotate scripts/plot/view.m @ 17059:c935a0db31c6
errorbar.m: Update to use new __plt_get_axis_arg__.
* scripts/plot/errorbar.m: Update to use new __plt_get_axis_arg__.
| author | Rik <rik@octave.org> |
|---|---|
| date | Wed, 24 Jul 2013 23:12:46 -0700 |
| parents | df643a532b61 |
| children | eaab03308c0b |
| rev | line source |
|---|---|
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1 ## Copyright (C) 2007-2012 John W. Eaton |
| 6257 | 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 | |
| 7016 | 7 ## the Free Software Foundation; either version 3 of the License, or (at |
| 8 ## your option) any later version. | |
| 6257 | 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 | |
| 7016 | 16 ## along with Octave; see the file COPYING. If not, see |
| 17 ## <http://www.gnu.org/licenses/>. | |
| 6257 | 18 |
| 19 ## -*- texinfo -*- | |
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20 ## @deftypefn {Function File} {[@var{azimuth}, @var{elevation}] =} view () |
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21 ## @deftypefnx {Function File} {} view (@var{azimuth}, @var{elevation}) |
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22 ## @deftypefnx {Function File} {} view ([@var{azimuth} @var{elevation}]) |
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23 ## @deftypefnx {Function File} {} view ([@var{x} @var{y} @var{z}]) |
| 16356 | 24 ## @deftypefnx {Function File} {} view (2) |
| 25 ## @deftypefnx {Function File} {} view (3) | |
| 11344 | 26 ## @deftypefnx {Function File} {} view (@var{ax}, @dots{}) |
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27 ## Query or set the viewpoint for the current axes. The parameters |
| 11344 | 28 ## @var{azimuth} and @var{elevation} can be given as two arguments or as |
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29 ## 2-element vector. |
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30 ## The viewpoint can also be given with Cartesian coordinates @var{x}, |
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31 ## @var{y}, and @var{z}. |
| 11344 | 32 ## The call @code{view (2)} sets the viewpoint to @var{azimuth} = 0 |
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33 ## and @var{elevation} = 90, which is the default for 2-D graphs. |
| 11344 | 34 ## The call @code{view (3)} sets the viewpoint to @var{azimuth} = -37.5 |
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35 ## and @var{elevation} = 30, which is the default for 3-D graphs. |
| 11344 | 36 ## If @var{ax} is given, the viewpoint is set for this axes, otherwise |
| 37 ## it is set for the current axes. | |
| 6257 | 38 ## @end deftypefn |
| 39 | |
| 40 ## Author: jwe | |
| 41 | |
| 11344 | 42 function [azimuth, elevation] = view (varargin) |
| 6257 | 43 |
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44 if (nargin < 4) |
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45 if (nargin == 0) |
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46 args = {get(gca (), "view")}; |
| 11344 | 47 else |
| 48 ax = varargin{1}; | |
| 49 if (ishandle (ax) && strcmp (get (ax, "type"), "axes")) | |
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50 args = varargin(2:end); |
| 11344 | 51 else |
| 52 ax = gca; | |
| 53 args = varargin; | |
| 54 endif | |
| 55 endif | |
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56 if (length (args) == 1) |
| 11344 | 57 x = args{1}; |
| 58 if (length (x) == 2) | |
| 59 az = x(1); | |
| 60 el = x(2); | |
| 61 elseif (length (x) == 3) | |
| 62 [az, el] = cart2sph (x(1), x(2), x(3)); | |
| 63 az *= 180/pi; | |
| 64 az += 90; | |
| 65 el *= 180/pi; | |
| 66 elseif (x == 2) | |
| 10549 | 67 az = 0; |
| 68 el = 90; | |
| 6257 | 69 elseif (x == 3) |
| 10549 | 70 az = -37.5; |
| 71 el = 30; | |
| 6257 | 72 else |
| 11344 | 73 print_usage (); |
| 6257 | 74 endif |
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75 elseif (length (args) == 2) |
| 11344 | 76 az = args{1}; |
| 77 el = args{2}; | |
| 6257 | 78 endif |
| 79 | |
| 80 if (nargin > 0) | |
| 11344 | 81 set (ax, "view", [az, el]); |
| 6257 | 82 endif |
| 83 | |
| 84 if (nargout == 1) | |
| 85 error ("view: T = view () not implemented"); | |
| 86 endif | |
| 87 | |
| 88 if (nargout == 2) | |
| 89 azimuth = az; | |
| 90 elevation = el; | |
| 91 endif | |
| 92 else | |
| 93 print_usage (); | |
| 94 endif | |
| 95 | |
| 96 endfunction | |
| 13096 | 97 |
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98 |
| 13096 | 99 %!test |
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100 %! hf = figure ("visible", "off"); |
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101 %! unwind_protect |
| 13096 | 102 %! plot3 ([0,1], [0,1], [0,1]); |
| 103 %! [az, el] = view; | |
| 104 %! assert ([az, el], [-37.5, 30], eps); | |
| 105 %! view (2); | |
| 106 %! [az, el] = view; | |
| 107 %! assert ([az, el], [0, 90], eps); | |
| 108 %! view ([1 1 0]); | |
| 109 %! [az, el] = view; | |
| 110 %! assert ([az, el], [135, 0], eps); | |
| 111 %! unwind_protect_cleanup | |
| 112 %! close (hf); | |
| 113 %! end_unwind_protect | |
| 114 | |
| 115 %!test | |
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116 %! hf = figure ("visible", "off"); |
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117 %! unwind_protect |
| 13096 | 118 %! line; |
| 119 %! [az, el] = view; | |
| 120 %! assert ([az, el], [0, 90], eps); | |
| 121 %! view (3); | |
| 122 %! [az, el] = view; | |
| 123 %! assert ([az, el], [-37.5, 30], eps); | |
| 124 %! unwind_protect_cleanup | |
| 125 %! close (hf); | |
| 126 %! end_unwind_protect | |
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127 |