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<?php
/**
* Copyright 2017 Horde LLC (http://www.horde.org/)
*
* See the enclosed file LICENSE for license information (LGPL). If you
* did not receive this file, see http://www.horde.org/licenses/lgpl21.
*
* @author Jan Schneider <jan@horde.org>
* @category Horde
* @license http://www.horde.org/licenses/lgpl21 LGPL-2.1
* @package Image
*/
/**
* Blur image effect.
*
* @author Jan Schneider <jan@horde.org>
* @category Horde
* @copyright 2017 Horde LLC
* @license http://www.horde.org/licenses/lgpl21 LGPL-2.1
* @package Image
*/
class Horde_Image_Effect_Im_Blur extends Horde_Image_Effect
{
/**
* Valid parameters:
* - factor: (integer) Blur strength.
*
* @var array
*/
protected $_params = array(
'factor' => 3,
);
/**
* Applies the effect.
*/
public function apply()
{
$this->_image->addPostSrcOperation(
'-blur 0x'
. (0.75 * $this->_params['factor'] ** 2 - 0.25 * $this->_params['factor'] + 1)
);
}
}
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