/**
* get label for given $vertex
*
* @param Vertex $vertex
* @return string
*/
protected function getVertexLabel(Vertex $vertex)
{
// label defaults to the vertex ID
$label = $vertex->getId();
// add balance to label if set
$balance = $vertex->getBalance();
if ($balance !== NULL) {
if ($balance > 0) {
$balance = '+' . $balance;
}
$label .= ' (' . $balance . ')';
}
// add group to label if set
// TODO: what does 'if set' mean? groups should not be shown when vertex never had any group assigned (but it defaults to 0)
// $group = $vertex->getGroup();
// if ($group !== 0) {
// $label .= ' [' . $group .']';
// }
return $label;
}
private function addBalance(Vertex $vertex, $balance)
{
$vertex->setBalance($vertex->getBalance() + $balance);
}
/**
* create a new Vertex in this Graph from the given input Vertex of another graph
*
* @param Vertex $originalVertex
* @return Vertex new vertex in this graph
* @throws RuntimeException if vertex with this ID already exists
*/
public function createVertexClone(Vertex $originalVertex)
{
$id = $originalVertex->getId();
if ($this->vertices->hasVertexId($id)) {
throw new RuntimeException('Id of cloned vertex already exists');
}
$newVertex = new Vertex($this, $id);
// TODO: properly set attributes of vertex
$newVertex->getAttributeBag()->setAttributes($originalVertex->getAttributeBag()->getAttributes());
$newVertex->setBalance($originalVertex->getBalance());
$newVertex->setGroup($originalVertex->getGroup());
return $newVertex;
}
protected function getLayoutVertex(Vertex $vertex)
{
$layout = $vertex->getLayout();
$balance = $vertex->getBalance();
if ($balance !== NULL) {
if ($balance > 0) {
$balance = '+' . $balance;
}
if (!isset($layout['label'])) {
$layout['label'] = $vertex->getId();
}
$layout['label'] .= ' (' . $balance . ')';
}
return $layout;
}
protected function getLayoutVertex(Vertex $vertex)
{
$bag = new AttributeBagNamespaced($vertex, 'graphviz.');
$layout = $bag->getAttributes();
$balance = $vertex->getBalance();
if ($balance !== NULL) {
if ($balance > 0) {
$balance = '+' . $balance;
}
if (!isset($layout['label'])) {
$layout['label'] = $vertex->getId();
}
$layout['label'] .= ' (' . $balance . ')';
}
return $layout;
}
