/**
* saves image file for given tile
*
* @param resource $image
* @param int $x
* @param int $y
* @param int $zoom
*/
public function addTile($image, $x, $y, $zoom)
{
$this->_imageHandler->saveImage($image, $this->_getFileName($x, $y, $zoom));
if ($this->_getSizeOfCache() > $this->_cacheSize) {
$this->_cleanCache();
}
}
