bool importGraph() {
unsigned int nbNodes = 30;
if (dataSet!=NULL) {
dataSet->get("nodes", nbNodes);
}
if (nbNodes < 3) nbNodes = 3;
srand(clock());
LayoutProperty *newLayout = graph->getLocalProperty<LayoutProperty>("viewLayout");
SizeProperty *newSize = graph->getLocalProperty<SizeProperty>("viewSize");
newSize->setAllNodeValue(Size(1.0,1.0,1.0));
vector<Triangle> faces;
Triangle f(graph->addNode(),
graph->addNode(),
graph->addNode());
faces.push_back(f);
graph->addEdge(f.a, f.b);
graph->addEdge(f.b, f.c);
graph->addEdge(f.c, f.a);
float val = static_cast<float>(nbNodes);
newLayout->setNodeValue(f.a, Coord(-val, -val, 0));
newLayout->setNodeValue(f.b, Coord(0, val, 0));
newLayout->setNodeValue(f.c, Coord(val, -val, 0));
unsigned int nb = 3;
while(nb<nbNodes) {
//choose a Triangle randomly
unsigned int i = rand()%faces.size();
Triangle f = faces[i];
node n = graph->addNode();
Coord tmp = newLayout->getNodeValue(f.a) +
newLayout->getNodeValue(f.b) +
newLayout->getNodeValue(f.c);
tmp /= 3.0;
newLayout->setNodeValue(n, tmp);
//Split the triangle in three part
graph->addEdge(n, f.a);
graph->addEdge(n, f.b);
graph->addEdge(n, f.c);
//add the three new Triangle, remove the old one(replace)
Triangle f1(f.a, f.b, n);
Triangle f2(f.b, f.c, n);
Triangle f3(f.c, f.a, n);
faces[i] = f1;
faces.push_back(f2);
faces.push_back(f3);
++nb;
}
return pluginProgress->state()!=TLP_CANCEL;
}
//=============================================================================
PropertyInterface* SizeProperty::clonePrototype(Graph * g, const std::string& n) {
if( !g )
return 0;
// allow to get an unregistered property (empty name)
SizeProperty * p = n.empty()
? new SizeProperty(g) : g->getLocalProperty<SizeProperty>( n );
p->setAllNodeValue( getNodeDefaultValue() );
p->setAllEdgeValue( getEdgeDefaultValue() );
return p;
}
