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Added 3s delay before reseting and repeating Spring animation. #7

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Added 3s delay before reseting and repeating Spring animation. #7

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16 changes: 12 additions & 4 deletions FluidInterfaces/FluidInterfaces/Spring.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -41,7 +41,7 @@ class SpringInterfaceViewController: InterfaceViewController {
sliderView.sliderFinishedMovingAction = { self.resetAnimation() }
return sliderView
}()

private var dampingRatio: CGFloat = 0.5
private var frequencyResponse: CGFloat = 1

Expand All @@ -67,22 +67,30 @@ class SpringInterfaceViewController: InterfaceViewController {
springView.bottomAnchor.constraint(equalTo: dampingSliderView.topAnchor, constant: -80).isActive = true

animateView()

}

private var animator = UIViewPropertyAnimator()

private var dwi: DispatchWorkItem?

/// Repeatedly animates the view using the current `dampingRatio` and `frequencyResponse`.
private func animateView() {
dwi?.cancel()

let timingParameters = UISpringTimingParameters(damping: dampingRatio, response: frequencyResponse)
animator = UIViewPropertyAnimator(duration: 0, timingParameters: timingParameters)
animator.addAnimations {
let translation = self.view.bounds.width - 2 * self.margin - 80
self.springView.transform = CGAffineTransform(translationX: translation, y: 0)
}
animator.addCompletion { _ in
self.springView.transform = .identity
self.animateView()
let dwi = DispatchWorkItem {
[weak self] in
self?.springView.transform = .identity
self?.animateView()
}
self.dwi = dwi
DispatchQueue.main.asyncAfter(deadline: .now() + 3, execute: dwi)
}
animator.startAnimation()
}
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