/usr/share/octave/packages/vrml-1.0.13/vrml_Background.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 | ## Copyright (C) 2002 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/>.
## s = vrml_Background (...) - Vrml Background node
##
## s is a string of the form :
## ------------------------------------------------------------------
## Background {
## skyColor [0 0 0]
## skyAngle [0]
## groundColor [0 0 0]
## groundangle [0]
## backUrl ""
## bottomUrl ""
## frontUrl ""
## leftUrl ""
## rightUrl ""
## topUrl ""
## }
## ------------------------------------------------------------------
##
## Options :
## All the fields of the node
##
## Example : s = vrml_Background ("skyColor",[0 0 1]);
##
function s = vrml_Background (varargin)
hash = struct(varargin{:});
opts = struct ("skyColor", 3,
"groundColor", 3,
"skyAngle", 1,
"groundAngle", 1,
"backUrl", 0,
"bottomUrl", 0,
"frontUrl", 0,
"leftUrl", 0,
"rightUrl", 0,
"topUrl", 0);
body = "";
for [val,key] = hash,
if isfield (opts, key)
n = opts.(key);
if (n == 0)
if (ischar(val))
body = [ body, sprintf(' %-20s "%s"\n', key, val) ];
else
error ("vrml_Background: field '%s' expects string", key);
endif
elseif (n == 1)
if (isscalar(val))
body = [ body, sprintf(' %-20s [ %8.3f ]\n', key, val) ];
else
error ("vrml_Background: field '%s' expects scalar", key);
endif
else
if (isvector(val) && length(val) == 3)
body = [body, sprintf(' %-20s [ %8.3f %8.3f %8.3f ]\n', key, val)];
else
error ("vrml_Background: field '%s' expects [r g b]", key);
endif
endif
else
error ("vrml_Background : unknown field '%s'",key);
end
end
s = sprintf ("Background { \n%s}\n", body);
endfunction
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