<?php
namespace InterventionImageGdCommands;
class ContrastCommand extends InterventionImageCommandsAbstractCommand
{
/**
* Changes contrast of image
*
* @param InterventionImageImage $image
* @return boolean
*/
public function execute($image)
{
$level = $this->argument(0)->between(-100, 100)->required()->value();
return imagefilter($image->getCore(), IMG_FILTER_CONTRAST, ($level * -1));
}
}