iOS动画和特效（六）swift动画库spring使用和代码拆解

    
     //1：需要让view继承自SpringView
     var ballView: SpringView!

     //2：配置动画的运行参数
     ballView.animation = "Shake" //配置动画方式
     
     //配置运动曲线 这里类似于先慢后快的运动，除了原生的运动曲线外，Spring库还添加了许多自定义的运动曲线
     ballView.curve = "EaseOut" 

     //3：执行动画
     ballView.animate()

//核心动画效果实现类
Spring

//UIView.animateWithDuration的动画的简单封装
SpringAnimation

//使用动画的入口类，本身继承自UIView，自己使用时可以通过继承SpringView，
//然后就可以使用spring动画特效，同时也支持Storyboard配置动画属性
SpringView

        let force = 1
        let duration = 0.7
        let delay = 0
        let repeatCount:Float = 1.0
        let timeFunction = CAMediaTimingFunction(name: kCAMediaTimingFunctionLinear)
        
        let animation = CAKeyframeAnimation()
        animation.keyPath = "position.x"
        animation.values = [0, 30*force, -30*force, 30*force, 0]
        animation.keyTimes = [0, 0.2, 0.4, 0.6, 0.8, 1]
        animation.timingFunction =  timeFunction
        animation.duration = CFTimeInterval(duration)
        animation.additive = true
        animation.repeatCount = repeatCount
        animation.beginTime = CACurrentMediaTime() + CFTimeInterval(delay)
        ballView.layer.addAnimation(animation, forKey: "shake")

   let force:Float = 1.0
        let duration = 0.7
        let delay = 0
        let repeatCount:Float = 1.0
        let timeFunction = CAMediaTimingFunction(name: kCAMediaTimingFunctionLinear)
      
        let animation = CAKeyframeAnimation()
        animation.keyPath = "transform.scale"
        animation.values = [0, 0.2 * force, -0.2 * force, 0.2 * force, 0]
        animation.keyTimes = [0, 0.2, 0.4, 0.6, 0.8, 1]
        animation.timingFunction = timeFunction
        animation.duration = CFTimeInterval(duration)
        animation.additive = true
        animation.repeatCount = repeatCount
        animation.beginTime = CACurrentMediaTime() + CFTimeInterval(delay)
        view.layer.addAnimation(animation, forKey: "pop")

    let morphX = CAKeyframeAnimation()
    morphX.keyPath = "transform.scale.x"
    morphX.values = [1, 1.3*force, 0.7, 1.3*force, 1]
    morphX.keyTimes = [0, 0.2, 0.4, 0.6, 0.8, 1]
    morphX.timingFunction = getTimingFunction(curve)
    morphX.duration = CFTimeInterval(duration)
    morphX.repeatCount = repeatCount
    morphX.beginTime = CACurrentMediaTime() + CFTimeInterval(delay)
    layer.addAnimation(morphX, forKey: "morphX")

    let morphY = CAKeyframeAnimation()
    morphY.keyPath = "transform.scale.y"
    morphY.values = [1, 0.7, 1.3*force, 0.7, 1]
    morphY.keyTimes = [0, 0.2, 0.4, 0.6, 0.8, 1]
    morphY.timingFunction = getTimingFunction(curve)
    morphY.duration = CFTimeInterval(duration)
    morphY.repeatCount = repeatCount
    morphY.beginTime = CACurrentMediaTime() + CFTimeInterval(delay)
    layer.addAnimation(morphY, forKey: "morphY")

 //区别
 morphX.values = [1, 1.5*force, 0.5, 1.5*force, 1]
 morphY.values = [1, 0.5, 1, 0.5, 1]

    let animation = CAKeyframeAnimation()
    animation.keyPath = "transform.rotation"
    animation.values = [0, 0.3*force, -0.3*force, 0.3*force, 0]
    animation.keyTimes = [0, 0.2, 0.4, 0.6, 0.8, 1]
    animation.duration = CFTimeInterval(duration)
    animation.additive = true
    animation.beginTime = CACurrentMediaTime() + CFTimeInterval(delay)
    layer.addAnimation(animation, forKey: "wobble")

    let x = CAKeyframeAnimation()
    x.keyPath = "position.x"
    x.values = [0, 30*force, -30*force, 30*force, 0]
    x.keyTimes = [0, 0.2, 0.4, 0.6, 0.8, 1]
    x.timingFunction = getTimingFunction(curve)
    x.duration = CFTimeInterval(duration)
    x.additive = true
    x.repeatCount = repeatCount
    x.beginTime = CACurrentMediaTime() + CFTimeInterval(delay)
    layer.addAnimation(x, forKey: "x")

    let animation = CAKeyframeAnimation()
    animation.keyPath = "transform.rotation"
    animation.values = [0, 0.3*force, -0.3*force, 0.3*force, 0]
    animation.keyTimes = [0, 0.2, 0.4, 0.6, 0.8, 1]
    animation.duration = CFTimeInterval(duration)
    animation.additive = true
    animation.beginTime = CACurrentMediaTime() + CFTimeInterval(delay)
    layer.addAnimation(animation, forKey: "swing")

    var perspective = CATransform3DIdentity
    perspective.m34 = -1.0 / layer.frame.size.width/2

    let animation = CABasicAnimation()
    animation.keyPath = "transform"
    animation.fromValue = NSValue(CATransform3D:
    CATransform3DMakeRotation(0, 0, 0, 0))

    //FlipX使用这句
    //animation.toValue = NSValue(CATransform3D:
        CATransform3DConcat(perspective,CATransform3DMakeRotation(CGFloat(M_PI), 0, 1, 0)))
    //FlipY使用这句
    animation.toValue = NSValue(CATransform3D:
    CATransform3DConcat(perspective,CATransform3DMakeRotation(CGFloat(M_PI), 1, 0, 0)))

    animation.duration = CFTimeInterval(duration)
    animation.beginTime = CACurrentMediaTime() + CFTimeInterval(delay)
    animation.timingFunction = getTimingFunction(curve)
    layer.addAnimation(animation, forKey: "3d")

   UIView.animateWithDuration(NSTimeInterval(duration), delay: NSTimeInterval(delay), usingSpringWithDamping: damping, initialSpringVelocity: velocity, options: [.CurveLinear,.AllowUserInteraction], animations: { () -> Void in
            let translate = CGAffineTransformMakeTranslation(0, 300)
            let rotate = CGAffineTransformMakeRotation(15 * CGFloat(M_PI / 180))
            self.view.transform = CGAffineTransformConcat(translate, rotate)
        }, completion: nil)

 UIView.animateWithDuration(NSTimeInterval(duration), delay: NSTimeInterval(delay), usingSpringWithDamping: damping, initialSpringVelocity: velocity, options: [.CurveLinear,.AllowUserInteraction], animations: { () -> Void in
            let translate = CGAffineTransformMakeTranslation(100, 0)
            //slide开头就不需要scale效果
            let scale = CGAffineTransformMakeScale(0.8, 1)
            self.view.transform = CGAffineTransformConcat(translate, scale)
            }, completion: nil)