/**
* Initalize the line segment with its two endpoints.
*
* @api
* @param \Nubs\Geometron\Point $a One endpoint of the line segment.
* @param \Nubs\Geometron\Point $b One endpoint of the line segment.
*/
public function __construct(Point $a, Point $b)
{
if (!$a->isSameSpace($b)) {
throw new Exception('The two points must be in the same geometric space');
}
$this->_a = $a;
$this->_b = $b;
}
/**
* Verify that a point's center is the same point.
*
* @test
* @uses \Nubs\Geometron\Point::__construct
* @uses \Nubs\Geometron\Point::vector
* @uses \Nubs\Geometron\Point::terms
* @covers ::center
*/
public function center()
{
$a = new Point(new Vector([5, 7, 9]));
$center = $a->center();
$this->assertSame($a->terms(), $center->terms());
}
/**
* Check whether the given point belongs to the same geometric space as this
* point.
*
* @api
* @param self $b The point to check.
* @return bool True if the points are in the same geometric space and false otherwise.
*/
public function isSameSpace(self $b)
{
return $this->vector()->isSameVectorSpace($b->vector());
}
