[7 Masters] Wearables - WatchShaker

1. 7Masters - Wearables Ezequiel França WatchShaker! ⌚
2. Mecatrônica @ SENAI Automação Industrial @ IFSP Analise de Sistemas @ FIAP Desenvolvedor iOS, Maker e open-source hacker. Ezequiel França
5. Heurística?
8. Let’s Shake
11. http://indiatoday.intoday.in/technology/story/apple-watch- handshakes-nfc-gestures/1/448093.html
14. lembrando rapidinho de protocolos delegates
15. protocol SomeProtocol { func someTypeMethod() }
16. protocol SomeProtocol { func someTypeMethod() } class SomeClass: SomeProtocol{ }
17. protocol WatchShakerDelegate { func watchShakerDidShake(_ watchShaker: WatchShaker) func watchShaker(_ watchShaker:WatchShaker, didFailWith error: Error) }
18. protocol WatchShakerDelegate { func didShake() func didFail(error: Error) }
19. protocol WatchShakerDelegate { func watchShakerDidShake(_ watchShaker: WatchShaker) func watchShaker(_ watchShaker:WatchShaker, didFailWith error: Error) }
20. class WatchShaker { public var delegate: WatchShakerDelegate? fileprivate var motionManager: CMMotionManager! fileprivate var lastShakeDate: Date? !// The threshold for how much acceleration needs to happen before an event will register. fileprivate var threshold:Double !// Time between shakes fileprivate var delay:Double = 0.1
21. init(shakeSensibility to:ShakeSensibility, delay time:Double) { self.threshold = to.rawValue self.delay = time self.motionManager = CMMotionManager() }
22. ShakeSensibility
23. enum ShakeSensibility: Double { case shakeSensibilitySoftest = 0.1 case shakeSensibilitySoft = 0.7 case shakeSensibilityNormal = 1.0 case shakeSensibilityHard = 1.2 case shakeSensibilityHardest = 2.0 }
24. public func start(delay accelerometerUpdateInterval:Double = 0.02) { guard motionManager.isAccelerometerAvailable else { return } motionManager.accelerometerUpdateInterval = accelerometerUpdateInterval let motionQueue = OperationQueue() motionManager.startAccelerometerUpdates(to: motionQueue) { (accelerometerData, err) -> Void in guard err == nil else { self.delegate?.watchShaker(self, didFailWith: err!) return }
25. guard let data = accelerometerData else { let e = NSError(domain: "No accelerometer data", code: 666, userInfo: ["No accelerometer data":"info"]) self.delegate?.watchShaker(self, didFailWith: e) return }
26. let valueX = fabs(data.acceleration.x) let valueY = fabs(data.acceleration.y) let maxValue = valueX > valueY ? valueX : valueY if maxValue > self.threshold { if let lastDate = self.lastShakeDate { if Date().compare(lastDate.addingTimeInterval(self.delay)) !== .orderedDescending { self.lastShakeDate = Date() self.delegate!?.watchShakerDidShake(self) } return } self.lastShakeDate = Date() self.delegate!?.watchShakerDidShake(self) }
27. :) @ezefranca http://ezefranca.com