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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 unconstrained.cpp
*
* Unconstrained graph layout test. Simple graph with 4 nodes and 4 edges,
* a triangle with a dangle. Final stress checked.
*
*
* Authors:
* Tim Dwyer <tgdwyer@gmail.com>
*/
#include <iostream>
#include <fstream>
#include <vector>
#include <valarray>
#include <algorithm>
#include <float.h>
#include "graphlayouttest.h"
using namespace std;
using namespace cola;
int main() {
const unsigned V = 4;
Edge edge_array[] = { Edge(0, 1), Edge(1, 2), Edge(2, 3), Edge(1, 3) };
const std::size_t E = sizeof(edge_array) / sizeof(Edge);
vector<Edge> es(E);
copy(edge_array,edge_array+E,es.begin());
double width=100;
double height=100;
vector<vpsc::Rectangle*> rs;
for(unsigned i=0;i<V;i++) {
double x=getRand(width), y=getRand(height);
rs.push_back(new vpsc::Rectangle(x,x+5,y,y+5));
}
CheckProgress test(1e-9,100);
ConstrainedFDLayout alg(rs,es,width/2,nullptr,&test);
alg.run();
double stress = alg.computeStress();
assert(stress < 0.0013);
OutputFile output(rs,es,nullptr,"unconstrained.svg");
output.generate();
for(unsigned i=0;i<V;i++) {
delete rs[i];
}
return 0;
}
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