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<?php |
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namespace graphp\graph; |
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use graphp\edge\EdgeInterface; |
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use graphp\vertex\VertexInterface; |
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use graphp\vertex\VertexSet; |
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/** |
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* Class GraphBuilder |
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* |
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* @package graphp\graph |
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*/ |
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class GraphBuilder |
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{ |
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/** |
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* The graph |
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* |
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* @var GraphInterface |
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*/ |
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private $graph; |
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/** |
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* Construct the graph |
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* |
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* @param GraphInterface $graph - the graph |
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*/ |
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public function __construct(GraphInterface $graph) |
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{ |
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$this->graph = $graph; |
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} |
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/** |
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* Add a vertex to the graph being built |
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* |
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* @param VertexInterface $vertex - the vertex |
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* |
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* @return self |
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*/ |
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public function addVertex(VertexInterface $vertex): self |
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{ |
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$this->graph->addVertex($vertex); |
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return $this; |
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} |
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/** |
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* Add vertices to the graph being built |
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* |
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* @param VertexSet $vertices - the vertices |
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* |
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* @return self |
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*/ |
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public function addVertices(VertexSet $vertices): self |
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{ |
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foreach ($vertices as $vertex) { |
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$this->addVertex($vertex); |
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} |
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return $this; |
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} |
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/** |
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* Add an edge to the graph being built |
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* |
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* @param VertexInterface $vertex - the source vertex |
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* @param VertexInterface $targetVertex - the target vertex |
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* @param EdgeInterface $edge - the edge to be added |
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* |
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* @return self |
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*/ |
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public function addEdge( |
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VertexInterface $sourceVertex, |
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VertexInterface $targetVertex, |
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?EdgeInterface $edge = null, |
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?float $weight = null |
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): self { |
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if (is_null($edge)) { |
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GraphUtils::addEdgeWithVertices($this->graph, $sourceVertex, $targetVertex, $weight); |
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} else { |
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$this->addVertex($sourceVertex); |
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$this->addVertex($targetVertex); |
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$this->graph->addEdge($sourceVertex, $targetVertex, $edge); |
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} |
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return $this; |
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} |
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/** |
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* Add an chain of edges to the graph being built |
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* |
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* @param VertexInterface $first - the first vertex |
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* @param VertexInterface $second - the second vertex |
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* @param mixed $vertices - the remaining vertices |
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* |
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* @return self |
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*/ |
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public function addEdgeChain(VertexInterface $first, VertexInterface $second, ...$vertices): self |
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{ |
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$this->addEdge($first, $second); |
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$last = $second; |
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foreach ($vertices as $vertex) { |
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$this->addEdge($last, $vertex); |
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$last = $vertex; |
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} |
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return $this; |
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} |
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/** |
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* Add all the vertices and all the edges of the specified graph to the graph being built |
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* |
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* @param GraphInterface $sourceGraph - the graph |
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* |
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* @return self |
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*/ |
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public function addGraph(GraphInterface $sourceGraph): self |
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{ |
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GraphUtils::addGraph($this->graph, $sourceGraph); |
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return $this; |
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} |
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/** |
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* Remove the specified vertex from the graph being built |
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* |
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* @param VertexInterface $vertex - the vertex to remove |
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* |
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* @return self |
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*/ |
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public function removeVertex(VertexInterface $vertex): self |
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{ |
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$this->graph->removeVertex($vertex); |
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return $this; |
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} |
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/** |
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* Remove vertices from the graph being built |
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* |
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* @param VertexSet $vertices - the vertices to remove |
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* |
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* @return self |
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*/ |
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public function removeVertices(VertexSet $vertices): self |
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{ |
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foreach ($vertices as $vertex) { |
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$this->removeVertex($vertex); |
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} |
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return $this; |
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} |
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/** |
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* Remove the edge from the graph being built |
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* |
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* @param VertexInterface $sourceVertex - the edge source vertex |
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* @param VertexInterface $tagretVertex - the edge target vertex |
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* @param EdgeInterface $edge - the edge |
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* |
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* @return self |
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*/ |
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public function removeEdge( |
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?VertexInterface $sourceVertex = null, |
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?VertexInterface $targetVertex = null, |
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?EdgeInterface $edge = null |
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): self { |
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$this->graph->removeEdge($sourceVertex, $targetVertex, $edge); |
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return $this; |
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} |
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/** |
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* Get the graph being built |
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* |
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* @return GraphInterface |
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*/ |
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public function build(): GraphInterface |
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{ |
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return $this->graph; |
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} |
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} |
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bingo-soft /
graphp
