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<?php
namespace Bmichotte\Dijkstra;
class Point
{
public $x;
public $y;
public $points;
public $ref;
public function __construct(int $x, int $y)
$this->x = $x;
$this->y = $y;
$this->points = [];
$this->ref = "{$x}-{$y}";
}
public function addPoint(self $point): self
if (! in_array($point, $this->points)) {
$this->points[] = $point;
// add the reverse point
if (! in_array($this, $point->points)) {
$point->points[] = $this;
return $this;
public function equals(self $point): bool
return $this->ref === $point->ref;
bmichotte /
dijkstra
