/**
* Validate and set static values
*
* @param array $init Configuration values.
*/
public function __construct($init)
{
// Validate arguments
is_dir($init['imgDir']) or $this->errorMessage('The image dir is not a valid directory.');
is_writable($init['cacheDir']) or $this->errorMessage('The cache dir is not a writable directory.');
// Set static values
self::$imgDir = $init['imgDir'];
self::$cacheDir = $init['cacheDir'];
self::$maxWidth = $init['maxWidth'];
self::$maxHeight = $init['maxHeight'];
}
