src/Maths/Algebra/Matrix.php
public function current()
    {
        if ($this->getWalkFlag() & self::WALK_X) {
            return $this->currentX();
        } elseif ($this->getWalkFlag() & self::WALK_Y) {
            return $this->currentY();
        } else {
            return $this->currentXY();
        }
    }
public function current()
    {
        if ($this->getWalkFlag() & self::WALK_X) {
            return $this->currentX();
        } elseif ($this->getWalkFlag() & self::WALK_Y) {
            return $this->currentY();
        } else {
            return $this->currentXY();
        }
    }
Get current value according to matrix's flag value

@return  mixed|null
@see     self::currentX()
@see     self::currentY()
@see     self::currentXY()