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<?php
namespace PHPAlgorithms\GraphTools;
use PHPAlgorithms\GraphTools\Interfaces\PointInterface;
use PHPAlgorithms\GraphTools\Exceptions\PointException;
class Point1D extends AbstractPoint implements PointInterface {
protected $x;
protected function checkX($x)
{
if (!is_numeric($x)) {
throw new PointException("x: {$x} must be numeric value");
}
public function __construct($x)
$this->checkX($x);
$this->x = $x;
public function move($x = 0)
$this->x += $x;
return $this;
public function lowerDimension()
return new AbstractPoint();
PHPAlgorithms /
GraphTools
