function crop($left, $top, $width, $height)
{
if ($this->file === NULL) {
return parent::crop($left, $top, $width, $height);
}
list($left, $top, $width, $height) = self::calculateCutout($this->getWidth(), $this->getHeight(), $left, $top, $width, $height);
$this->execute("convert -crop {$width}x{$height}+{$left}+{$top} -strip %input %output", self::PNG);
return $this;
}
function crop($left, $top, $width, $height)
{
if ($this->file === NULL) {
return parent::crop($left, $top, $width, $height);
}
$left = max(0, (int) $left);
$top = max(0, (int) $top);
$width = min((int) $width, $this->getWidth() - $left);
$height = min((int) $height, $this->getHeight() - $top);
$this->execute("convert -crop {$width}x{$height}+{$left}+{$top} -strip %input %output", self::PNG);
return $this;
}
