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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]=CONSTRAINT2_c(job,arg1,arg2)
// Copyright INRIA
x=[];
y=[];
typ=[];
select job
case "set" then
x=arg1
graphics=arg1.graphics;
exprs=graphics.exprs
model=arg1.model;
while %t do
ask_again=%f
[ok,x0,xd0,id,exprs]=scicos_getvalue("Set Constraint block parameters",["Initial guess values of states x";"Initial guess values of derivative x''";"Id(i)=1: if x''(i) is present in the feedback, else Id(i)=0"],list("vec",-1,"vec",-1,"vec",-1),exprs)
if ~ok then
break,
end
x0=x0(:);
N=size(x0,"*");
xd0=xd0(:);
Nxd=size(xd0,"*");
id=id(:);
Nid=size(id,"*");
if (N~=Nxd)|(N~=Nid) then
message("incompatible sizes, states, their derivatives, and ID should be the same size ")
ask_again=%t
end
if (N<=0 & ~ask_again) then
x_message("number of states (constraints) must be > 0 ")
ask_again=%t
end
if (~ask_again) then
for i=1:N,
if ~((id(i)==0) | (id(i)==1)) then
ask_again=%t
x_message(["Id(i) must be either";"0 when x''(i) is not present in the feedback";"1: when x''(i) is present in the feedback"])
break
end
if (id(i)==0) then
id(i)=-1;
end;
end
end
if ~ask_again then
graphics.exprs=exprs
model.state=[x0;xd0];
model.out=[N;N]
model.in=N
model.ipar=id
x.graphics=graphics;
x.model=model
break
end
end
case "define" then
x0=[0];
xd0=[0];
id=[0];
model=scicos_model()
model.sim=list("constraint_c",10004)
model.in=1
model.out=[1;1]
model.state=[x0;xd0]
model.ipar=id
model.blocktype="c"
model.dep_ut=[%f %t]
exprs=list(strcat(sci2exp(x0)),strcat(sci2exp(xd0)),strcat(sci2exp(id)))
gr_i=[]
x=standard_define([3 2],model,exprs,gr_i)
end
endfunction
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