Breath Animation (Smartch Watch App)

A simple approach implementing Breath animation (Apple Watch app).

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Flexible

This model is able to receive animation settings as duration, repeat count and autoreverse. Generate your breath animating using BreathLayerGenerator choosing the number of circles you want.

import UIKit

final class BreathViewController: UIViewController {
    
    var generator: BreathLayerGenerator?
    var animator: BreathAnimator?
    lazy var layers = [CAShapeLayer]()
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        view.backgroundColor = .black
        
        generator = BreathLayerGenerator(center: view.center)
        animator = BreathAnimator(duration: 4, repeatCount: 3, autoreverse: true)
        
        setupBreath()
    }
    
    private func setupBreath(){
        guard let layers = generator?.generateLayers(numberOfLayers: 6) else { return }
        layers.forEach { view.layer.addSublayer($0) }
        
        animator?.animate(layers: layers)
    }
}