'; $this->x = 0; $this->y = 0; } public function inner() { $this->__construct(); } public function setX($x) { $this->x = $x; } public function setY($y) { $this->y = $y; } public function getX() { return $this->x; } public function getY() { return $this->y; } public function distance() { return sqrt($this->getX() ** 2 + $this->getY() ** 2); } }