CA Spring Animation

private func getSpringAnimation(withInitialPostion initialPos: CGPoint, finalPos: CGPoint) -> CASpringAnimation {
    let basicAnimation = CASpringAnimation(keyPath: "position")
    basicAnimation.fromValue = NSValue(cgPoint: initialPos)
    basicAnimation.toValue = NSValue(cgPoint: finalPos)
    basicAnimation.duration = basicAnimation.settlingDuration
    basicAnimation.damping = 14
    basicAnimation.initialVelocity = 5
    basicAnimation.isRemovedOnCompletion = false
    basicAnimation.fillMode = CAMediaTimingFillMode.forwards
    return basicAnimation
}