bundesmessenger-ios/Riot/Modules/Common/Flow/CAKeyframeAnimation+Extension.swift

// Copyright © 2016-2019 JABT Labs Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions: The above copyright
// notice and this permission notice shall be included in all copies or
// substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// IN THE SOFTWARE.

import Foundation
import UIKit

public extension CAKeyframeAnimation {
    var reversed: CAKeyframeAnimation {
        let reversed = CAKeyframeAnimation(keyPath: keyPath)
        reversed.keyTimes = keyTimes?.reversed().map { NSNumber(floatLiteral: 1.0 - $0.doubleValue) }
        reversed.values = values?.reversed()
        reversed.timingFunctions = timingFunctions?.reversed().map { $0.reversed }
        reversed.duration = duration
        return reversed
    }
}