/**
* Sets the character height of a character
* @param mixed $ch a character
* @param float $h height
*/
public function setCharacterHeight($ch, $h)
{
if ($this->direction != -1) {
$this->font_metrics[$this->direction]->setCharacterHeight($ch, $h);
} else {
parent::setCharacterHeight($ch, $h);
}
}