extension CGSize {
 static	func widthRatio(ratio: CGSize, width: Float) -> CGSize {
		let oldWidth = Float(ratio.width)
		let scaleFactor = width / oldWidth
		let newHeight = Float(ratio.height) * scaleFactor
		let newWidth = oldWidth * scaleFactor;
		return CGSize(width: CGFloat(newWidth), height: CGFloat(newHeight))
	}

	static func heightRatio(ratio: CGSize, height: Float) -> CGSize {
		let oldHeight = Float(ratio.width)
		let scaleFactor = height / oldHeight
		let newWidth = Float(ratio.width) * scaleFactor
		let newHeight = oldHeight * scaleFactor;
		return CGSize(width: CGFloat(newWidth), height: CGFloat(newHeight))
	}
	// EXAMPLE: CGSize.heightRatio(ratio: CGSize(width: 100, height: 100), height: 100)
}