iOS开发——动画编程Swift篇&（五）CAKeyframeAnimation

CAKeyframeAnimation

     //CAKeyframeAnimation-关键针动画
     @IBAction func cakFly()
     {
         let animation = CAKeyframeAnimation(keyPath: "position")

         //设置5个位置点
         let p1 = CGPointMake(0.0, 0.0)
         let p2 = CGPointMake(, 0.0)
         let p3 = CGPointMake(, 460.0)
         let p4 = CGPointMake(320.0, 460.0)
         let p5 = CGPointMake(160.0, 200.0)

         //赋值
         animation.values = [NSValue(CGPoint: p1),NSValue(CGPoint: p2),NSValue(CGPoint: p3),NSValue(CGPoint: p4),NSValue(CGPoint: p5)]

         //每个动作的 时间百分比
         animation.keyTimes = [NSNumber(float: 0.0),NSNumber(float: 0.4),NSNumber(float: 0.6),NSNumber(float: 0.8),NSNumber(float: 1.0)]

         animation.delegate = self
         animation.duration = 5.0

         self.testImageView.layer.addAnimation(animation, forKey: "Image-Fly")
     }

     //动画代理
     override func animationDidStart(anim: CAAnimation!)
     {
         //动画开始
     }

    override func animationDidStop(anim: CAAnimation!, finished flag: Bool)
     {
         //动画结束
     }