/**
* Deterimines if the current iterator item is valid.
*
* @return boolean
* @throws Ansel_Exception
*/
public function valid()
{
if (empty($this->_loaded['full'])) {
$this->load();
}
try {
return $this->_image->valid();
} catch (Horde_Image_Exception $e) {
throw new Ansel_Exception($e);
}
}
