/usr/share/octave/packages/nurbs-1.3.7/vectrans.m is in octave-nurbs 1.3.7-1build1.
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 | function dd = vectrans(vector)
%
% VECTRANS: Transformation matrix for a translation.
%
% Calling Sequence:
%
% st = vectrans(tvec)
%
% INPUT:
%
% tvec : A vectors defining the translation along the x,y and
% z axes. i.e. [tx, ty, ty]
%
% OUTPUT:
%
% st : Translation Transformation Matrix
%
% Description:
%
% Returns a (4x4) Transformation matrix for translation.
%
% The matrix is:
%
% [ 1 0 0 tx ]
% [ 0 1 0 ty ]
% [ 0 0 1 tz ]
% [ 0 0 0 1 ]
%
% Examples:
%
% Translate the NURBS line (0.0,0.0,0.0) - (1.0,1.0,1.0) by 3 along
% the x-axis, 2 along the y-axis and 4 along the z-axis.
%
% line = nrbline([0.0 0.0 0.0],[1.0 1.0 1.0]);
% trans = vectrans([3.0 2.0 4.0]);
% tline = nrbtform(line, trans);
%
% See also:
%
% nrbtform
%
% Copyright (C) 2000 Mark Spink
%
% 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/>.
if nargin < 1
error('Translation vector required');
end
v = [vector(:);0;0];
dd = [1 0 0 v(1); 0 1 0 v(2); 0 0 1 v(3); 0 0 0 1];
end
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