1function [omesh,onodes,oelements]=Usubmesh(imesh,intrfc,sdl,short)
2
3#
4#  [omesh,onodes,oelements]=Usubmesh(imesh,intrfc,sdl,short)
5#
6# builds the mesh structure for
7# the given list
8# of subdomains sdl
9#
10# NOTE: the intrfc parameter is unused and only kept
11#       as a legacy
12
13
14
15% This file is part of
16%
17%            SECS2D - A 2-D Drift--Diffusion Semiconductor Device Simulator
18%         -------------------------------------------------------------------
19%            Copyright (C) 2004-2006  Carlo de Falco
20%
21%
22%
23%  SECS2D is free software; you can redistribute it and/or modify
24%  it under the terms of the GNU General Public License as published by
25%  the Free Software Foundation; either version 2 of the License, or
26%  (at your option) any later version.
27%
28%  SECS2D is distributed in the hope that it will be useful,
29%  but WITHOUT ANY WARRANTY; without even the implied warranty of
30%  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
31%  GNU General Public License for more details.
32%
33%  You should have received a copy of the GNU General Public License
34%  along with SECS2D; If not, see <http://www.gnu.org/licenses/>.
35
36
37
38
39
40nsd = length(sdl);
41
42#######
43# the shp field will remain unchanged
44if (~short)
45    omesh.shp = imesh.shp;
46end
47
48#######
49# set list of output triangles
50oelements=[];
51for isd=1:nsd
52	oelements = [oelements find(imesh.t(4,:)==sdl(isd))];
53end
54
55omesh.t = imesh.t(:,oelements);
56
57#######
58# discard unneeded part of shg and wjacdet
59if (~short)
60    omesh.shg= imesh.shg(:,:,oelements);
61    omesh.wjacdet = imesh.wjacdet(:,oelements);
62end
63
64#######
65# set list of output nodes
66onodes          = unique(reshape(imesh.t(1:3,oelements),1,[]));
67omesh.p         = imesh.p(:,onodes);
68
69
70#######
71# use new node numbering in connectivity matrix
72indx(onodes) = [1:length(onodes)];
73iel = [1:length(oelements)];
74omesh.t(1:3,iel) = indx(omesh.t(1:3,iel));
75
76#######
77# set list of output edges
78omesh.e =[];
79for isd=1:nsd
80	omesh.e = [omesh.e imesh.e(:,imesh.e(7,:)==sdl(isd))];
81	omesh.e = [omesh.e imesh.e(:,imesh.e(6,:)==sdl(isd))];
82end
83omesh.e=unique(omesh.e',"rows")';
84
85#######
86# use new node numbering in boundary segment list
87ied = [1:size(omesh.e,2)];
88omesh.e(1:2,ied) = indx(omesh.e(1:2,ied));
89
90% Last Revision:
91% $Author: adb014 $
92% $Date: 2008-02-04 16:26:27 +0100 (man, 04 feb 2008) $
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