Multiple transforms UIView - swift

Question

I want to transform my image view like this:
I use landscape mode, I want the panda begin at the center vertically from the left, then it will rotate 360 again and again with become bigger and bigger, and go to the center vertically to the right.
I have tried like this:
import UIKit
class ViewController: UIViewController {
#IBOutlet var imageView: UIImageView!
override func viewDidLoad() {
super.viewDidLoad()
let scale = CGAffineTransformMakeScale(3.0, 3.0)
let rotate = CGAffineTransformMakeRotation(180*CGFloat(M_PI)/180)
let translate = CGAffineTransformMakeTranslation(UIScreen.mainScreen().bounds.width - 100, 0)
UIView.animateWithDuration(3.0, delay: 0, options: [.Repeat, .Autoreverse, .CurveEaseInOut], animations: { () -> Void in
let mixTransform = CGAffineTransformConcat(scale, translate)
self.imageView.transform = mixTransform
self.view.layoutIfNeeded()
}, completion: nil)
UIView.animateWithDuration(1.0, delay: 0, options: [.Repeat, .Autoreverse, .CurveEaseInOut], animations: { () -> Void in
self.imageView.transform = rotate
}, completion: nil)
}
}
But it doesn't work well.

Answer 1

Your transforms obviously dont fit your requirements.
If you want image to scale proportionally, why you set different scales for X and Y then?
Again, if you want image to move along X axis, why you adjust Y position of it in transforms? Simply fix your transform and you are ready to go.
In particular:
let scale = CGAffineTransformMakeScale(3.0, 3.0)
...
let translate = CGAffineTransformMakeTranslation(UIScreen.mainScreen().bounds.width - 400, 0)

Answer 2

Here is my answer:
import UIKit
import QuartzCore
class ViewController: UIViewController {
#IBOutlet var imageView: UIImageView!
override func viewDidLoad() {
super.viewDidLoad()
let kRotationAnimationKey = "com.myapplication.rotationanimationkey"
func rotateView(view: UIView, duration: Double = 1) {
if view.layer.animationForKey(kRotationAnimationKey) == nil {
let rotationAnimation = CABasicAnimation(keyPath: "transform.rotation")
rotationAnimation.fromValue = 0.0
rotationAnimation.toValue = Float(M_PI * 2.0)
rotationAnimation.duration = duration
rotationAnimation.repeatCount = Float.infinity
view.layer.addAnimation(rotationAnimation, forKey: kRotationAnimationKey)
}
}
func stopRotatingView(view: UIView) {
if view.layer.animationForKey(kRotationAnimationKey) != nil {
view.layer.removeAnimationForKey(kRotationAnimationKey)
}
}
var transform = CGAffineTransformMakeTranslation(UIScreen.mainScreen().bounds.width - 200, 0)
transform = CGAffineTransformScale(transform, 3.0, 3.0)
UIView.animateWithDuration(1.0, delay: 0, options: [.Repeat, .Autoreverse, .CurveEaseInOut], animations: { () -> Void in
self.imageView.transform = transform
rotateView(self.imageView)
self.view.layoutIfNeeded()
}) { (_) -> Void in
stopRotatingView(self.imageView)
}
}
}
Result: