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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]=HYSTHERESIS(job,arg1,arg2)
x=[];
y=[];
typ=[];
select job
case "set" then
x=arg1;
graphics=arg1.graphics;
exprs=graphics.exprs
model=arg1.model;
while %t do
[ok,high_lim,low_lim,out_high,out_low,nzz,exprs]=scicos_getvalue("Set parameters",..
["switch on at";"switch off at";"output when on";
"output when off";"use zero crossing: yes (1), no (0)"],..
list("vec",1,"vec",1,"vec",1,"vec",1,"vec",1),exprs)
if ~ok then
break,
end
if low_lim>high_lim then
message("switch on value must be larger than switch off value")
else
graphics.exprs=exprs;
model.rpar=[high_lim,low_lim,out_high,out_low]'
if nzz>0 then
nzz=2,
end
model.nzcross=nzz
x.graphics=graphics;
x.model=model
break
end
end
case "define" then
in=1
ipar=[0] // rule
nzz=2
rpar=[1;0;1;0]
model=scicos_model()
model.sim=list("hystheresis",4)
model.in=in
model.out=1
model.rpar=rpar
model.nzcross=nzz
model.nmode=1
model.blocktype="c"
model.dep_ut=[%t %f]
exprs=[string(rpar);string(sign(nzz))]
gr_i=[]
x=standard_define([2 2],model,exprs,gr_i)
end
endfunction
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