BarcodeGenerator::qr_penalty

private function qr_penalty(&$matrix, $size) {
	$score  = $this->qr_penalty_1($matrix, $size);
	$score += $this->qr_penalty_2($matrix, $size);
	$score += $this->qr_penalty_3($matrix, $size);
	$score += $this->qr_penalty_4($matrix, $size);
	return $score;
}