CFile::ScaleImage

static function ScaleImage($sourceImageWidth, $sourceImageHeight, $arSize, $resizeType, &$bNeedCreatePicture, &$arSourceSize, &$arDestinationSize)
{
	$source = new Rectangle($sourceImageWidth, $sourceImageHeight);
	$destination = new Rectangle($arSize["width"], $arSize["height"]);

	$bNeedCreatePicture = $source->resize($destination, $resizeType);

	$arSourceSize = [
		"x" => $source->getX(),
		"y" => $source->getY(),
		"width" => $source->getWidth(),
		"height" => $source->getHeight(),
	];
	$arDestinationSize = [
		"x" => $destination->getX(),
		"y" => $destination->getY(),
		"width" => $destination->getWidth(),
		"height" => $destination->getHeight(),
	];
}