/**
* Rectangle constructor.
*
* @param Point2d $pointA A point
* @param Point2d $pointB B point
* @param Point2d $pointC C point
* @param Point2d $pointD D point
* @throws Exception
*/
public function __construct(Point2d $pointA, Point2d $pointB, Point2d $pointC, Point2d $pointD)
{
parent::__construct();
$test1 = Point2d::getAngle($pointA, $pointD, $pointB);
$test2 = Point2d::getAngle($pointB, $pointA, $pointC);
$test3 = Point2d::getAngle($pointC, $pointB, $pointD);
$test4 = Point2d::getAngle($pointD, $pointC, $pointA);
if ($test1 != deg2rad(90) || $test2 != deg2rad(90) || $test3 != deg2rad(90) || $test4 != deg2rad(90)) {
throw new Exception('Points must be draw a rectangle!');
}
$this->setPointA($pointA);
$this->setPointB($pointB);
$this->setPointC($pointC);
$this->setPointD($pointD);
}
/**
* @expectedException Exception
* @expectedExceptionMessage Points must be different than the center point!
*/
public function testGetAngleException()
{
$p1 = new Point2d(0, 0);
$p2 = new Point2d(0, 0);
$p3 = new Point2d(0, 3);
Point2d::getAngle($p1, $p2, $p3);
}
/**
* Apply a vector on each point and return a new instance of Polygon
*
* @param Vector2d $vector
* @return Polygon
*/
public function translate(Vector2d $vector)
{
$buffer = clone $this;
foreach ($buffer->_points as $index => $point) {
$buffer->setPoint($index, Point2d::add($point, $vector));
}
return $buffer;
}
/**
* Determines if this triangle is right
*
* @return bool
*/
public function isRight()
{
$angles = [Point2d::getAngle($this->getPointA(), $this->getPointB(), $this->getPointC()), Point2d::getAngle($this->getPointB(), $this->getPointA(), $this->getPointC()), Point2d::getAngle($this->getPointC(), $this->getPointA(), $this->getPointB())];
return in_array(deg2rad(90), $angles);
}
