1 function [p,e,t]=Ustructmesh_random(x,y,region,sides)
3 % [p,e,t]=Ustructmesh(x,y,region,sides)
7 % SECS2D - A 2-D Drift--Diffusion Semiconductor Device Simulator
8 % -------------------------------------------------------------------
9 % Copyright (C) 2004-2006 Carlo de Falco
13 % SECS2D is free software; you can redistribute it and/or modify
14 % it under the terms of the GNU General Public License as published by
15 % the Free Software Foundation; either version 2 of the License, or
16 % (at your option) any later version.
18 % SECS2D is distributed in the hope that it will be useful,
19 % but WITHOUT ANY WARRANTY; without even the implied warranty of
20 % MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 % GNU General Public License for more details.
23 % You should have received a copy of the GNU General Public License
24 % along with SECS2D; If not, see <http://www.gnu.org/licenses/>.
31 [XX,YY] = meshgrid(x,y);
40 theperm = iiv(randperm(niiv));
41 first = theperm(1:floor(niiv/2));
42 second = theperm(floor(niiv/2)+1:end);
44 t = [[first;first+ny;first+ny+1],[first;first+ny+1;first+1] ];
45 t = [t,[second;second+ny;second+1],[second+ny;second+ny+1;second+1] ];
51 l2 = ny*(nx-1)+1:nx*ny;
54 e = [ l1([1:end-1]) l2([1:end-1]) l3([1:end-1]) l4([1:end-1])
55 l1([2:end]) l2([2:end]) l3([2:end]) l4([2:end])
56 [l1([1:end-1]) l2([1:end-1]) l3([1:end-1]) l4([1:end-1])]*0
57 [l1([1:end-1]) l2([1:end-1]) l3([1:end-1]) l4([1:end-1])]*0
58 l1([1:end-1])*0+sides(1) l2([1:end-1])*0+sides(2) l3([1:end-1])*0+sides(3) l4([1:end-1])*0+sides(4)
59 [l1([1:end-1]) l2([1:end-1]) l3([1:end-1]) l4([1:end-1])]*0
60 [l1([1:end-1]) l2([1:end-1]) l3([1:end-1]) l4([1:end-1])]*0+region