/usr/share/octave/packages/3.2/nurbs-1.3.3/kntuniform.m is in octave-nurbs 1.3.3-1.
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 | % KNTUNIFORM: generate uniform open knot vectors in the reference domain.
%
% [csi, zeta] = kntuniform (num, degree, regularity)
%
% INPUT:
%
% num: number of breaks (in each direction)
% degree: polynomial degree (in each direction)
% regularity: global regularity (in each direction)
%
% OUTPUT:
%
% csi: knots
% zeta: breaks = knots without repetitions
%
% Copyright (C) 2009, 2010 Carlo de Falco
%
% 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.
%
% You should have received a copy of the GNU General Public License
% along with this program. If not, see <http://www.gnu.org/licenses/>.
function [csi, zeta] = kntuniform (num, degree, regularity)
if (numel(num)~=numel(degree) || numel(num)~=numel(regularity))
error('kntuniform: num, degree and regularity must have the same length')
else
for idim=1:numel(num)
zeta{idim} = linspace (0, 1, num(idim));
rep = degree(idim) - regularity(idim);
if (rep > 0)
csi{idim} = [zeros(1, degree(idim)+1-rep)...
reshape(repmat(zeta{idim}, rep, 1), 1, []) ones(1, degree(idim)+1-rep)];
else
error ('kntuniform: regularity requested is too high')
end
end
end
end
|