private function _adjustPoint($point)
    {
        $type = $this->shapeType / 10;
        if ($type >= 2) {
            $point = $this->_fixPoint($point, 'm');
        } elseif ($type >= 1) {
            $point = $this->_fixPoint($point, 'z');
            $point = $this->_fixPoint($point, 'm');
        }

        return $point;
    }