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<?php
namespace Kmeans;
use Kmeans\Interfaces\ClusterInterface;
use Kmeans\Interfaces\PointCollectionInterface;
use Kmeans\Interfaces\PointInterface;
use Kmeans\Interfaces\SpaceInterface;
class Cluster implements ClusterInterface
{
private PointInterface $centroid;
private PointCollectionInterface $points;
public function __construct(PointInterface $centroid, PointCollectionInterface $points = null)
$this->points = $points ?? new PointCollection($centroid->getSpace());
$this->setCentroid($centroid);
}
public function getSpace(): SpaceInterface
return $this->points->getSpace();
public function belongsTo(SpaceInterface $space): bool
return $this->getSpace()->isEqualTo($space);
public function getCentroid(): PointInterface
return $this->centroid;
public function setCentroid(PointInterface $point): void
if (! $point->belongsTo($this->getSpace())) {
throw new \LogicException("Cannot set centroid: invalid point space");
$this->centroid = $point;
public function getPoints(): PointCollectionInterface
return $this->points;
public function attach(PointInterface $point): void
$this->points->attach($point);
public function detach(PointInterface $point): void
$this->points->detach($point);
bdelespierre /
php-kmeans
