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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]=CLSS_f(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
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)
if ms<>ns then
message('A matrix must be square')
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('csslti',1)
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=['txt=[''xd=Ax+Bu'';''y=Cx+Du''];';
'xstringb(orig(1),orig(2),txt,sz(1),sz(2),''fill'');']
x=standard_define([4 2],model,exprs,gr_i)
end
endfunction
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