Animations in swift
Music bars moving
func animationMusicBars() {
let r = CAReplicatorLayer()
r.bounds = CGRect(x: 0.0, y: 0.0, width: 60.0, height: 60.0)
r.position = CGPoint(x: 60, y: 60)
view.layer.addSublayer(r)
let bar = CALayer()
bar.bounds = CGRect(x: 0.0, y: 0.0, width: 8.0, height: 40.0)
bar.position = CGPoint(x: 10.0, y: 75.0)
bar.cornerRadius = 2.0
bar.backgroundColor = UIColor.redColor().CGColor
r.addSublayer(bar)
let move = CABasicAnimation(keyPath: "position.y")
move.toValue = bar.position.y - 35.0
move.duration = 0.5
move.autoreverses = true
move.repeatCount = Float.infinity
bar.addAnimation(move, forKey: nil)
r.instanceCount = 6
r.instanceTransform = CATransform3DMakeTranslation(9.0, 0.0, 0.0)
r.instanceDelay = 0.13
r.masksToBounds = true
}Spinning Blocks
func animationSpingBlocks(){
let r = CAReplicatorLayer()
r.bounds = CGRect(x: 0.0, y: 0.0, width: 200.0, height: 200.0)
r.cornerRadius = 10.0
r.backgroundColor = UIColor(white: 0.0, alpha: 0.75).CGColor
r.position = CGPoint(x: 220, y: 120)
view.layer.addSublayer(r)
let dot = CALayer()
dot.bounds = CGRect(x: 0.0, y: 0.0, width: 14.0, height: 14.0)
dot.position = CGPoint(x: 100.0, y: 40.0)
dot.backgroundColor = UIColor(white: 0.8, alpha: 1.0).CGColor
dot.borderColor = UIColor(white: 1.0, alpha: 1.0).CGColor
dot.borderWidth = 1.0
dot.cornerRadius = 2.0
r.addSublayer(dot)
let nrDots: Int = 15
r.instanceCount = nrDots
let angle = CGFloat(2*M_PI) / CGFloat(nrDots)
r.instanceTransform = CATransform3DMakeRotation(angle, 0.0, 0.0, 1.0)
let duration: CFTimeInterval = 1.5
let shrink = CABasicAnimation(keyPath: "transform.scale")
shrink.fromValue = 1.0
shrink.toValue = 0.1
shrink.duration = duration
shrink.repeatCount = Float.infinity
dot.addAnimation(shrink, forKey: nil)
r.instanceDelay = duration/Double(nrDots)
dot.transform = CATransform3DMakeScale(0.01, 0.01, 0.01)
}source: http://www.ios-animations-by-emails.com/posts/2015-march#tutorial