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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., 675 Mass Ave, Cambridge, MA 02139, USA.
//
// See the file ../license.txt
//
function [x,y,typ]=CLR(job,arg1,arg2)
x=[];y=[];typ=[]
select job
case 'plot' then
standard_draw(arg1)
case 'getinputs' then
[x,y,typ]=standard_inputs(arg1)
case 'getoutputs' then
[x,y,typ]=standard_outputs(arg1)
case 'getorigin' then
[x,y]=standard_origin(arg1)
case 'set' then
x=arg1;
graphics=arg1.graphics;exprs=graphics.exprs
model=arg1.model;
x0=model.state
rpar=model.rpar
ns=prod(size(x0));nin=1;nout=1
%scicos_context=%scicos_context; //copy the semi-global variable locally
%scicos_context.s=%s //add s definition to the context
while %t do
[ok,num,den,exprs]=scicos_getvalue('Set continuous SISO transfer parameters',..
['Numerator (s)';
'Denominator (s)'],..
list('pol',1,'pol',1),exprs)
if ~ok then break,end
if degree(num)>degree(den) then
message('Transfer function must be proper or strictly proper.')
ok=%f
end
if ok then
H=cont_frm(num,den)
[A,B,C,D]=H(2:5);
graphics.exprs=exprs;
[ns1,ns1]=size(A)
rpar=[matrix(A,ns1*ns1,1);
matrix(B,ns1,1);
matrix(C,ns1,1);
D]
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
if ns1<=ns then
x0=x0(1:ns1)
else
x0(ns1,1)=0
end
model.state=x0
model.rpar=rpar
x.graphics=graphics;x.model=model
break
end
end
case 'define' then
x0=0;A=-1;B=1;C=1;D=0;
exprs=['1';'1+s']
model=scicos_model()
model.sim=list('csslti4',4)
model.in=1
model.out=1
model.state=x0
model.rpar=[A(:);B(:);C(:);D(:)]
model.blocktype='c'
model.dep_ut=[%f %t]
gr_i=['xstringb(orig(1),orig(2),[''num(s)'';''den(s)''],sz(1),sz(2),''fill'')';
'xpoly([orig(1)+.1*sz(1),orig(1)+.9*sz(1)],[1,1]*(orig(2)+sz(2)/2))']
x=standard_define([2.5 2.5],model,exprs,gr_i)
end
endfunction
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