/usr/share/octave/packages/vrml-1.0.13/vrml_frame.m is in octave-vrml 1.0.13-2.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 | ## Copyright (C) 2002-2012 Etienne Grossmann <etienne@egdn.net>
##
## 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 3 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.
##
## You should have received a copy of the GNU General Public License along with
## this program; if not, see <http://www.gnu.org/licenses/>.
## v = vrml_frame (t, r, ...)
##
## t : 3 Translation Default : [0,0,0]
## r : 3x3 Matrix, or Default : eye(3)
## 3 Argument for rotv
## OPTIONS
## name : size : function : default
## "scale" : 3 or 1 : Length of frame's branches (including cone) <1>
## "diam" : 3 or 1 : Diameter of cone's base
## "col" : 3 or 3x3 : Color of branches (may be stacked vertically) <[3 4 9]/10>
## "hcol" : 3 or 3x3 : Color of head (may be stacked vertically) <col>
##
function v = vrml_frame (varargin)
### Test with : frame with R,G,B vectors of len 3,2,1 and cone's diam are .2,
### .4, .6.
##
### vrml_browse (vrml_frame ("scale",[3,2,1],"diam",0.2*[1,2,3],"col",eye(3)));
t = zeros (3,1);
r = eye(3);
scale = ones (1,3);
diam = [nan,nan,nan];
col = [0.3 0.4 0.9];
hcol = [];
dc = nan(1,3);
dr = nan(1,3);
######################################################################
## Read options
numeric_args = 0;
args = nargin; # nargin is now a function
while args && numeric_args<2 && numeric_args<numel(varargin)
tmp = varargin{numeric_args + 1};
if ischar (tmp), break; end
--args;
numeric_args++;
if numeric_args == 1, t = tmp ;
else r = tmp ; break;
end
end
if args
leftover_args = {varargin{numeric_args+1:end}}; # pos 2.1.39
verbose = 0;
## df = tars (col, hcol, diam, scale, verbose);
df = struct ("dc", dc, \ # Diameter of cone (absolute)
"dr", dr, \ # Diameter of rod (absolute)
"col", col, \ # Color
"hcol", hcol, \ # Color of head (if different)
"diam", diam, \ # Diameter of cone relative to branch length
"scale", scale, \ # Lenght of branches
"verbose",verbose);
op1 = " col hcol diam scale dc dr ";
op0 = " verbose ";
s = read_options (leftover_args, "op1",op1,"op0",op0,"default",df,"skipnan",1);
dc = s.dc;
dr = s.dr;
col = s.col;
hcol = s.hcol;
diam = s.diam;
scale = s.scale;
end
######################################################################
if isempty (hcol), hcol = col; end
t = t(:); # t : 3x1
if prod (size (r)) == 3, r = rotv (r); end
## col is 3x3 from now on
if prod (size (col))==3, col = [1;1;1]*col(:)' ; end
if prod (size (hcol))==3, hcol = [1;1;1]*hcol(:)' ; end
if prod (size (diam))==1, diam = [1,1,1]*diam ; end
if prod (size (scale))==1, scale = [1,1,1]*scale ; end
scale = scale(:)' ;
diam = - ones(1,3) * nanmax (scale) / 16;
rdiam = - ones(1,3) * nanmax (scale) / 32;
sz = [scale; nan*ones(1,3); diam; rdiam] ;
if any (! isnan (dc))
ii = find (! isnan (dc));
sz(3,ii) = dc(ii);
end
if any (! isnan (dr))
ii = find (! isnan (dr));
sz(4,ii) = dr(ii);
end
## roddiam = min (nze (scale))/12 ;
## if roddiam, d = roddiam.*scale ; else d = [nan,nan,nan] ; end
## diam = diam.*scale ;
## d = diam = nan*scale;
r2 = r;
n = sqrt (sum (r2.^2));
r2./= [1;1;1] * n;
sz(1,:) .*= n;
sz(3,:) ./= n;
sz(4,:) ./= n;
tmp = [r2(:,1), null(r2(:,1)')](:,[2,1,3])';
if det (tmp) < 0, tmp(3,:) *= -1; end
a1 = vrml_transfo (vrml_arrow(sz(:,1),[col(1,:);hcol(1,:)],0),\
[0,0,0],tmp);
## keyboard
tmp = [r2(:,2), null(r2(:,2)')](:,[2,1,3])';
if det (tmp) < 0, tmp(3,:) *= -1; end
a2 = vrml_transfo (vrml_arrow(sz(:,2),[col(2,:);hcol(2,:)],0),\
[0,0,0],tmp);
tmp = [r2(:,3), null(r2(:,3)')](:,[2,1,3])';
if det (tmp) < 0, tmp(3,:) *= -1; end
a3 = vrml_transfo (vrml_arrow(sz(:,3),[col(3,:);hcol(3,:)],0),\
[0,0,0],tmp);
f0 = vrml_group (a1, a2, a3);
v = vrml_transfo (f0, t, nan);
endfunction
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