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// Scicos
//
// Copyright (C) INRIA - METALAU Project <scicos@inria.fr>
//
// 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, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
// See the file ../license.txt
//
function [x,y,typ]=CLSS(job,arg1,arg2)
x=[];
y=[];
typ=[];
select job
case "set" then
x=arg1
graphics=arg1.graphics;
exprs=graphics.exprs
if size(exprs,"*")==7 then
exprs=exprs([1:4 7]),
end //compatibility
model=arg1.model;
while %t do
[ok,A,B,C,D,x0,exprs]=scicos_getvalue("Set continuous linear system parameters",..
["A matrix";
"B matrix";
"C matrix";
"D matrix";
"Initial state"],..
list("mat",[-1,-1],..
"mat",["size(%1,2)","-1"],..
"mat",["-1","size(%1,2)"],..
"mat",[-1 -1],..
"vec","size(%1,2)"),..
exprs)
if ~ok then
break,
end
out=size(C,1);
if out==0 then
out=[],
end
in=size(B,2);
if in==0 then
in=[],
end
[ms,ns]=size(A)
okD=%t
if size(D,"*")<>size(C,1)*size(B,2) then
if size(D,"*")==1 then
D = D*ones(C*B) ;
elseif size(D,"*")==0 then
D = zeros(C*B) ;
else
okD = %f ;
end
end
if ms<>ns|~okD then
message(_("Matrix A is not square or D has wrong dimension"))
else
[model,graphics,ok]=check_io(model,graphics,in,out,[],[])
if ok then
graphics.exprs=exprs;
rpar=[A(:);B(:);C(:);D(:)];
if D<>[] then
if norm(D,1)<>0 then
mmm=[%t %t];
else
mmm=[%f %t];
end
if or(model.dep_ut<>mmm) then
model.dep_ut=mmm,
end
else
model.dep_ut=[%f %t];
end
model.state=x0(:);
model.rpar=rpar
x.graphics=graphics;
x.model=model
break
end
end
end
case "define" then
x0=0;
A=-1;
B=1;
C=1;
D=0;
in=1;
out=1
model=scicos_model()
model.sim=list("csslti4",4)
model.in=in
model.out=out
model.state=x0
model.rpar=[A(:);B(:);C(:);D(:)];
model.blocktype="c"
model.dep_ut=[%f %t]
exprs=[strcat(sci2exp(A));
strcat(sci2exp(B));
strcat(sci2exp(C));
strcat(sci2exp(D));
strcat(sci2exp(x0))]
gr_i=[]
x=standard_define([4 2],model,exprs,gr_i)
end
endfunction
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