/usr/share/octave/packages/secs2d-0.0.8/Utilities/Usubmesh.m is in octave-secs2d 0.0.8-5.
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 | function [omesh,onodes,oelements]=Usubmesh(imesh,intrfc,sdl,short)
#
# [omesh,onodes,oelements]=Usubmesh(imesh,intrfc,sdl,short)
#
# builds the mesh structure for
# the given list
# of subdomains sdl
#
# NOTE: the intrfc parameter is unused and only kept
# as a legacy
% This file is part of
%
% SECS2D - A 2-D Drift--Diffusion Semiconductor Device Simulator
% -------------------------------------------------------------------
% Copyright (C) 2004-2006 Carlo de Falco
%
%
%
% SECS2D 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.
%
% SECS2D 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 SECS2D; If not, see <http://www.gnu.org/licenses/>.
nsd = length(sdl);
#######
# the shp field will remain unchanged
if (~short)
omesh.shp = imesh.shp;
end
#######
# set list of output triangles
oelements=[];
for isd=1:nsd
oelements = [oelements find(imesh.t(4,:)==sdl(isd))];
end
omesh.t = imesh.t(:,oelements);
#######
# discard unneeded part of shg and wjacdet
if (~short)
omesh.shg= imesh.shg(:,:,oelements);
omesh.wjacdet = imesh.wjacdet(:,oelements);
end
#######
# set list of output nodes
onodes = unique(reshape(imesh.t(1:3,oelements),1,[]));
omesh.p = imesh.p(:,onodes);
#######
# use new node numbering in connectivity matrix
indx(onodes) = [1:length(onodes)];
iel = [1:length(oelements)];
omesh.t(1:3,iel) = indx(omesh.t(1:3,iel));
#######
# set list of output edges
omesh.e =[];
for isd=1:nsd
omesh.e = [omesh.e imesh.e(:,imesh.e(7,:)==sdl(isd))];
omesh.e = [omesh.e imesh.e(:,imesh.e(6,:)==sdl(isd))];
end
omesh.e=unique(omesh.e',"rows")';
#######
# use new node numbering in boundary segment list
ied = [1:size(omesh.e,2)];
omesh.e(1:2,ied) = indx(omesh.e(1:2,ied));
% Last Revision:
% $Author: adb014 $
% $Date: 2008-02-04 16:26:27 +0100 (man, 04 feb 2008) $
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