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/*
* vim: ts=4 sw=4 et tw=0 wm=0
*
* libcola - A library providing force-directed network layout using the
* stress-majorization method subject to separation constraints.
*
* Copyright (C) 2006-2008 Monash University
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library in the file LICENSE; if not,
* write to the Free Software Foundation, Inc., 59 Temple Place,
* Suite 330, Boston, MA 02111-1307 USA
*
*/
/** \file boundary.cpp
*
* a clustered graph using libtopology to preserve the cluster boundary.
*/
/*
* Authors:
* Tim Dwyer <tgdwyer@gmail.com>
*/
#include <iostream>
#include <iomanip>
#include <fstream>
#include <vector>
#include <valarray>
#include <algorithm>
#include <float.h>
#include "graphlayouttest.h"
#include <libtopology/topology_graph.h>
#include <libproject/project.h>
using namespace std;
using namespace topology;
Node* addNode( Nodes& vs, vpsc::Rectangle* r) {
Node *v = new Node(vs.size(), r);
vs.push_back(v);
return v;
}
void addToPath(EdgePoints& ps, Node *v, EdgePoint::RectIntersect i) {
ps.push_back(new EdgePoint(v,i));
}
struct SetDesiredPos : public PreIteration {
SetDesiredPos(Locks& locks) : PreIteration(locks) {}
};
struct Test : TestConvergence {
Test(const double d,const unsigned i,topology::Nodes& vs, topology::Edges& es,const string fname) : TestConvergence(d,i), vs(vs), es(es), fname(fname) {}
bool operator()(const double new_stress, valarray<double> & X, valarray<double> & Y) {
bool converged= TestConvergence::operator()(new_stress,X,Y);
if(converged) {
cerr << "stress="<<new_stress<<" iteration="<<iterations<<endl;
stringstream ss;
ss << fname << "-" << setfill('0') << setw(3) << iterations << ".svg";
cerr << "writing file: " << ss.str() << endl;
writeFile(vs,es,ss.str());
}
return converged;
}
double lastStress;
topology::Nodes& vs;
topology::Edges& es;
const string fname;
};
void clusterBoundary() {
vector<cola::Edge> es;
vector<vpsc::Rectangle*> rs;
rs.push_back(new vpsc::Rectangle(395,449,155,189));
rs.push_back(new vpsc::Rectangle(309,363,155,189));
double idealLength=60;
// set up topology graph
topology::Nodes vs;
for(vector<Rectangle*>::iterator i = rs.begin(); i!=rs.end();++i) {
addNode(vs,*i);
}
Edges tes;
EdgePoints ps;
addToPath(ps,vs[1],EdgePoint::BL);
addToPath(ps,vs[0],EdgePoint::BR);
addToPath(ps,vs[0],EdgePoint::TR);
addToPath(ps,vs[1],EdgePoint::TL);
ps.push_back(ps[0]);
tes.push_back(new topology::Edge(idealLength, ps));
writeFile(vs,tes,"boundary-000.svg");
Locks locks;
locks.push_back(Lock(0,rs[0]->getCentreX(), rs[0]->getCentreY()+10));
locks.push_back(Lock(1,rs[1]->getCentreX(), rs[1]->getCentreY()));
SetDesiredPos preIteration(locks);
Test test(0.00001,100,vs,tes,"boundary");
cola::ConstrainedFDLayout alg(rs,es,idealLength,nullptr,test,&preIteration);
alg.setTopology(&vs,&tes);
alg.run(true,true);
double finalStress=alg.computeStress();
printf("finalStress=%f\n",finalStress);
//assert(finalStress<1e-5);
for_each(rs.begin(),rs.end(),cola::delete_object());
for_each(tes.begin(),tes.end(),cola::delete_object());
for_each(vs.begin(),vs.end(),cola::delete_object());
}
int main() {
clusterBoundary();
return 0;
}
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=4:softtabstop=4:textwidth=80 :
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