/usr/share/plplot_octave/set_view.m is in octave-plplot 5.10.0+dfsg-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 | ## Copyright (C) 1998-2003 Joao Cardoso.
##
## This program is free software; you can redistribute it and/or modify it
## under the terms of the GNU General Public License as published by the
## Free Software Foundation; either version 2 of the License, or (at your
## option) any later version.
##
## This program is distributed in the hope that it will be useful, but
## WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
## General Public License for more details.
##
## This file is part of plplot_octave.
## set_view (alt, az)
## set_view (script, arg1, ...)
## set_view ()
##
## If called with two numeric arguments, sets up the altitude and azimute
## in degrees for posterior 3d plots.
##
## If called without arguments, rotates iteratively a cube using the mouse.
##
## If called with one string as the first argument, instead of a cube the string
## is evaluated as a function and should do a 3D plot, using the remaining arguments.
##
## example of callback `script':
## [x, y, z] = peaks;
## set_view("surfl", x, y, z);
##
## To control the view angle, the following mouse buttons can be used:
##
## button 1 press: marks new origin
## button 1,3 drag: rotate cube
## button 2 press: finish
## button 3 press: return to default position
function set_view (alt, az, varargin)
global __pl
strm = __pl_init;
callback = 0;
if (nargin == 2 && !ischar(alt))
__pl.az(strm) = az;
__pl.alt(strm) = alt;
return
elseif (nargin >= 2 && ischar(alt))
cmd = alt;
arg1 = az;
callback = 1;
endif
az = __pl.az(strm);
alt = __pl.alt(strm);
if (!callback)
x = y = [0; 1];
z = ones(2);
xm = ym = zm = 0;
xM = yM = zM = 1;
plcol0(15);
__pl_plenv(-1.5, 1.5, -1.5, 2.5, 0, -2);
plw3d(2, 2, 2, xm, xM, ym, yM, zm, zM, alt, az)
plmtex("t", 3, 0.5, 0.5, sprintf("Alt=%d Az=%d", alt, az));
plbox3("bnstu", "X axis", 0.0, 0,"bnstu", "Y axis", 0.0, 0,"bdcmnstuv",
"Z axis", 0.0, 0)
plot3d(x,y,z,1,1);
plflush;
xm = ym = zm = 0;
xM = yM = zM = 1;
else
title(sprintf("Alt=%d Az=%d", alt, az));
feval(cmd, arg1, varargin{:});
endif
odx = ody = 0;
c_alt = c_az = 0;
while (1)
[status, state, keysym, button, string, pX, pY, dX, dY, wX, wY, subwin] = plGetCursor;
if (button == 3) # default position
az = -60; alt = 30;
ox = dX; oy = dY;
c_alt = c_az = 0;
elseif(button == 2) # stop
break;
elseif (button == 1) # mark position
ox = dX; oy = dY;
alt = alt + c_alt; az = az + c_az;
c_alt = c_az = 0;
elseif (button == 0) # drag
c_az = (dX-ox)*100;
c_alt = (oy-dY)*100;
endif
if (alt + c_alt > 90)
c_alt = 90 - alt;
elseif (alt + c_alt < 0)
c_alt = -alt;
endif
if (!callback)
__pl_plenv(-1.5, 1.5, -1.5, 2.5, 0, -2);
plw3d(2, 2, 2, xm, xM, ym, yM, zm, zM, alt+c_alt, az+c_az)
plbox3("bnstu", "x axis", 0.0, 0,"bnstu", "y axis", 0.0,
0,"bdcmnstuv", "z axis", 0.0, 0)
plmtex("t", 3, 0.5, 0.5, sprintf("Alt=%d Az=%d", alt+c_alt, az+c_az));
plot3d(x,y,z,1,1);
plflush;
else
__pl.az(strm) = az + c_az;
__pl.alt(strm) = alt + c_alt;
title(sprintf("Alt=%d Az=%d", alt+c_alt, az+c_az));
feval(cmd, arg1, varargin{:});
endif
endwhile
__pl.az(strm) = az + c_az;
__pl.alt(strm) = alt + c_alt;
endfunction
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