ce0d3ba940
* Improve status bar style update animation when dismissing media viewer. * Use gesture velocity in the media dismissal spring-based animation.
28 lines
757 B
Swift
28 lines
757 B
Swift
//
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// Copyright 2022 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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//
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import UIKit
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public extension UIViewPropertyAnimator {
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convenience init (
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duration: TimeInterval,
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springDamping: CGFloat,
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springResponse: CGFloat,
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initialVelocity velocity: CGVector = .zero
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) {
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let stiffness = pow(2 * .pi / springResponse, 2)
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let damping = 4 * .pi * springDamping / springResponse
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let timingParameters = UISpringTimingParameters(
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mass: 1,
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stiffness: stiffness,
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damping: damping,
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initialVelocity: velocity
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)
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self.init(duration: duration, timingParameters: timingParameters)
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isUserInteractionEnabled = true
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}
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}
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