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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]=BOUNCE(job,arg1,arg2)
x=[];
y=[];
typ=[];
select job
case "set" then
x=arg1;
graphics=arg1.graphics;
exprs=graphics.exprs
model=arg1.model;
if size(exprs,"*")<9 then
exprs(8)="9.81";
exprs(9)="0";
end
while %t do
[ok,rpar1,rpar2,walls,xt,xd,y,yd,g,C,exprs]=scicos_getvalue(["Set Bounce Block"],..
["Mass";"Radius";"[xmin,xmax,ymin,ymax]";"xpos";"xdpos";"ypos";..
"ydpos";"g (gravity)";"C (aerodynamic coeff"],..
list("vec",-1,"vec",-1,"vec",-1,"vec",-1,"vec",-1,..
"vec",-1,"vec",-1,"vec",1,"vec",1),exprs)
if ~ok then
break,
end
xt=xt(:);
y=y(:);
xd=xd(:);
yd=yd(:);
rpar1=rpar1(:);
rpar2=rpar2(:);
n=size(xt,"*");
walls=walls(:);
if walls(1)>walls(2) then
walls=walls([2,1]);
end
if walls(3)>walls(3) then
walls=walls([3,4]);
end
if n<>size(y,"*")|n<>size(rpar1,"*")|n<>size(rpar2,"*")|..
n<>size(xd,"*")|n<>size(yd,"*") then
message("All vectors must have equal size")
ok=%f
elseif ~(min([rpar1;rpar2])>0) then
message("Mass and radius must be >0")
ok=%f
end
if ~ok then
break,
end
[model,graphics,ok]=check_io(model,graphics,[],[n,n],[],[])
if ok then
k=1;ipar=[];
for i=1:n
for j=i+1:n
ipar(k)=i
k=k+1
ipar(k)=j
k=k+1
end
end
model.rpar=[rpar1;rpar2;walls;g;C];
model.ipar=ipar;
state=[xt,xd,y,yd];
state=state';
model.state=state(:)
model.nzcross=n*(n-1)/2+4*n;
graphics.exprs=exprs;
x.graphics=graphics;
x.model=model
break
end
end
case "define" then
n=2
k=1;ipar=[];
for i=1:n
for j=i+1:n
ipar(k)=i
k=k+1
ipar(k)=j
k=k+1
end
end
walls=[0;5;0;5]
x=[2;2.5];
xd=[0;0];
y=[3;5];
yd=[0;0];
g=9.81;
C=0
rpar1=ones(n,1);
rpar2=rpar1;
state=[x,xd,y,yd];
state=state';
model=scicos_model()
model.sim=list("bounce_ball",4)
model.in=[]
model.out=[n;n]
model.state=state(:)
model.rpar=[rpar1;rpar2;walls;g;C];
model.ipar=ipar;
model.nzcross=n*(n-1)/2+4*n;
model.blocktype="c"
model.dep_ut=[%f %t]
exprs=[strcat(sci2exp(rpar1));strcat(sci2exp(rpar2));strcat(sci2exp(walls));strcat(sci2exp(x));strcat(sci2exp(xd));strcat(sci2exp(y));strcat(sci2exp(yd))]
gr_i=[]
x=standard_define([3 2],model,exprs,gr_i)
end
endfunction
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