/**
Рекурсивно вычисляет потенциалы графа
*
* @param VertexInterface $vertex
*/
protected function calculatePotentials(VertexInterface $vertex)
{
$connections = $vertex->getConnections();
$sorted = array_flip($connections);
krsort($sorted);
foreach ($connections as $id => $distance) {
$v = $this->getGraph()->getVertex($id);
$v->setPotential($vertex->getPotential() + $distance, $vertex);
foreach ($this->getPaths() as $path) {
$count = count($path);
if ($path[$count - 1]->getId() === $vertex->getId()) {
$this->paths[] = array_merge($path, array($v));
}
}
}
$vertex->markPassed();
foreach ($sorted as $id) {
$vertex = $this->getGraph()->getVertex($id);
if (!$vertex->isPassed()) {
$this->calculatePotentials($vertex);
}
}
}
/**
* Connects the vertex to another $vertex.
* A $distance, to balance the connection, can be specified.
*
* @param Vertex $vertex
* @param integer $distance
*/
public function connect(VertexInterface $vertex, $distance = 1)
{
$this->connections[$vertex->getId()] = $distance;
}