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-rw-r--r-- | src/3rdparty/adaptagrams/libcola/tests/unconstrained.cpp | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/src/3rdparty/adaptagrams/libcola/tests/unconstrained.cpp b/src/3rdparty/adaptagrams/libcola/tests/unconstrained.cpp new file mode 100644 index 0000000..f6f112b --- /dev/null +++ b/src/3rdparty/adaptagrams/libcola/tests/unconstrained.cpp @@ -0,0 +1,71 @@ +/* + * 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; +} |