nonPerspectiveRotation.swift

let layer = CALayer()
layer.backgroundColor = UIColor.red.cgColor
layer.frame = CGRect(x: 0, y: 0, width: 200, height: 100)
animationView.layer.addSublayer(layer)

var transform = CATransform3DIdentity
transform = CATransform3DRotate(transform, (180 * .pi / 180), 0, 1, 0)

let animation = CABasicAnimation(keyPath: "transform")
animation.duration = 2
animation.toValue = transform
animation.fillMode = .forwards
animation.isRemovedOnCompletion = false
layer.add(animation, forKey: UUID().description)