CoreAnimation 四季天气动画 in Swift

之前做的一个和天气有关的动画，主要用到CoreAnimation 和 CAKeyframeAnimation 。下面进入正题~

1. 晴

转动的太阳，和挥洒的阳光。我是这么理解的。设计给的原型图，就这么理解着看吧，动起来为原则~

sunny.gif

CAKeyframeAnimation添加圈的转动，写的比较繁琐...，现在看真的好繁琐，转啊转~
用UIView.animateWithDuration 添加那些会动的小点，这里更繁琐，主要控制它起落的位置，以及运动时的加速度。还有运动时的呼吸效果~

func sunny() {
    let imageLayer1 = CALayer()
    imageLayer1.contents = UIImage(named: "内环")!.CGImage
    imageLayer1.frame = CGRect(x: 0, y: -self.view.frame.width * 0.90, width: self.view.frame.width, height: self.view.frame.width)
    view.layer.insertSublayer(imageLayer1, above: view.layer)
    let anim1 = CAKeyframeAnimation(keyPath: "transform.rotation")
    anim1.duration = 50.0  //时间间隔
    anim1.repeatCount = MAXFLOAT    //重复次数
    anim1.values = [CGPoint(x: -100.0, y: 0.0),
        CGPoint(x: view.frame.width + 120.0, y: 100.0),
        CGPoint(x: -100.0, y: 0)]
        .map{NSValue(CGPoint: $0)}
    anim1.keyTimes = [0.0, 50.0]
    imageLayer1.addAnimation(anim1, forKey: nil)
    
    let imageLayer2 = CALayer()
    imageLayer2.contents = UIImage(named: "中环")!.CGImage
    imageLayer2.frame = CGRect(x: 20, y: -self.view.frame.width * 0.85, width: self.view.frame.width, height: self.view.frame.width)
    view.layer.insertSublayer(imageLayer2, above: view.layer)
    let anim2 = CAKeyframeAnimation(keyPath: "transform.rotation")
    anim2.duration = 80.0
    anim2.repeatCount = MAXFLOAT
    anim2.values = [CGPoint(x: 0.0, y: 0.0),
        CGPoint(x: -view.frame.width - 120.0, y: 100.0),
        CGPoint(x:  0.0, y: 0)]
        .map{NSValue(CGPoint: $0)}
    anim2.keyTimes = [0.0, 50.0]
    imageLayer2.addAnimation(anim2, forKey: nil)
    
    let imageLayer3 = CALayer()
    imageLayer3.contents = UIImage(named: "外环")!.CGImage
    imageLayer3.frame = CGRect(x: 0, y: -self.view.frame.width * 0.80, width: self.view.frame.width, height: self.view.frame.width)
    view.layer.insertSublayer(imageLayer3, above: view.layer)
    let anim3 = CAKeyframeAnimation(keyPath: "transform.rotation")
    anim3.duration = 80.0
    anim3.repeatCount = MAXFLOAT
    anim3.values = [CGPoint(x: -100.0, y: 0.0),
        CGPoint(x: view.frame.width + 120.0, y: 100.0),
        CGPoint(x: -100.0, y: 0)]
        .map{NSValue(CGPoint: $0)}
    anim3.keyTimes = [0.0, 50.0]
    imageLayer3.addAnimation(anim3, forKey: nil)
    
    let pointEmitter = CAEmitterLayer()
    pointEmitter.emitterPosition = CGPointMake(120, -120)
    
    
    pointEmitter.emitterSize = CGSizeMake(20, 20)
    pointEmitter.emitterMode = kCAEmitterLayerSurface
    pointEmitter.emitterShape = kCAEmitterLayerOldestLast
    //        pointEmitter.lifetime = 5
    
    
    let point1 = UIView()
    point1.layer.position = CGPointMake(self.view.frame.width * 0.5, 210)
    point1.layer.bounds = CGRectMake(0, 0, 5, 5)
    point1.backgroundColor = UIColor.init(patternImage: UIImage(named: "point")!)
    self.view.addSubview(point1)
    
    
    UIView.animateWithDuration(5.0, delay: 0.0, options: [.Repeat, .CurveEaseOut], animations: {
        point1.frame.origin.x = self.view.frame.width * 0.5
        point1.frame.origin.y = 20
        point1.center = CGPointMake(10, 70)
        
        UIView.animateWithDuration(1.0, animations: {
            point1.transform = CGAffineTransformTranslate(point1.transform, 0, 0)
            let scaleAnimation = CABasicAnimation(keyPath: "transform.scale")
            scaleAnimation.fromValue = 1.5
            scaleAnimation.toValue = 2.0
            scaleAnimation.autoreverses = true
            scaleAnimation.fillMode = kCAFillModeForwards
            scaleAnimation.repeatCount = MAXFLOAT
            scaleAnimation.duration = 0.8
            point1.layer.addAnimation(scaleAnimation, forKey: "scaleAnimation")
        })
        
        
    }) { (true) in
        
    }
    
    let point2 = UIView()
    point2.layer.position = CGPointMake(self.view.frame.width * 0.5, 210)
    point2.layer.bounds = CGRectMake(0, 0, 5, 5)
    point2.backgroundColor = UIColor.init(patternImage: UIImage(named: "point")!)
    self.view.addSubview(point2)
    
    UIView.animateWithDuration(5.0, delay: 0.0, options: [.Repeat, .CurveEaseOut], animations: {
        point2.frame.origin.x = self.view.frame.width * 0.5
        point2.frame.origin.y = 20
        point2.center = CGPointMake(80, 100)
        
        UIView.animateWithDuration(1.0, animations: {
            point2.transform = CGAffineTransformTranslate(point2.transform, 0, 0)
            let scaleAnimation = CABasicAnimation(keyPath: "transform.scale")
            scaleAnimation.fromValue = 1.0
            scaleAnimation.toValue = 1.5
            scaleAnimation.autoreverses = true
            scaleAnimation.fillMode = kCAFillModeForwards
            scaleAnimation.repeatCount = MAXFLOAT
            scaleAnimation.duration = 0.8
            point2.layer.addAnimation(scaleAnimation, forKey: "scaleAnimation")
        })
        
        
    }) { (true) in
        
    }
    
    let point3 = UIView()
    point3.layer.position = CGPointMake(self.view.frame.width * 0.5, 210)
    point3.layer.bounds = CGRectMake(0, 0, 5, 5)
    point3.backgroundColor = UIColor.init(patternImage: UIImage(named: "point")!)
    self.view.addSubview(point3)
    
    
    UIView.animateWithDuration(5.0, delay: 0.0, options: [.Repeat, .CurveEaseOut], animations: {
        point3.frame.origin.x = self.view.frame.width * 0.5
        point3.frame.origin.y = 20
        point3.center = CGPointMake(100, 50)
        
        UIView.animateWithDuration(1.0, animations: {
            point1.transform = CGAffineTransformTranslate(point3.transform, 0, 0)
            let scaleAnimation = CABasicAnimation(keyPath: "transform.scale")
            scaleAnimation.fromValue = 0.7
            scaleAnimation.toValue = 1.2
            scaleAnimation.autoreverses = true
            scaleAnimation.fillMode = kCAFillModeForwards
            scaleAnimation.repeatCount = MAXFLOAT
            scaleAnimation.duration = 0.8
            point3.layer.addAnimation(scaleAnimation, forKey: "scaleAnimation")
        })
        
        
    }) { (true) in
        
    }
    
    let point4 = UIView()
    point4.layer.position = CGPointMake(self.view.frame.width * 0.5, 210)
    point4.layer.bounds = CGRectMake(0, 0, 5, 5)
    point4.backgroundColor = UIColor.init(patternImage: UIImage(named: "point")!)
    self.view.addSubview(point4)
    
    
    UIView.animateWithDuration(5.0, delay: 0.0, options: [.Repeat, .CurveEaseOut], animations: {
        point4.frame.origin.x = self.view.frame.width * 0.5
        point4.frame.origin.y = 20
        point4.center = CGPointMake(self.view.frame.width - 10, 70)
        
        UIView.animateWithDuration(1.0, animations: {
            point1.transform = CGAffineTransformTranslate(point4.transform, 0, 0)
            let scaleAnimation = CABasicAnimation(keyPath: "transform.scale")
            scaleAnimation.fromValue = 1.5
            scaleAnimation.toValue = 2.0
            scaleAnimation.autoreverses = true
            scaleAnimation.fillMode = kCAFillModeForwards
            scaleAnimation.repeatCount = MAXFLOAT
            scaleAnimation.duration = 0.8
            point4.layer.addAnimation(scaleAnimation, forKey: "scaleAnimation")
        })
        
        
    }) { (true) in
        
    }

    let point5 = UIView()
    point5.layer.position = CGPointMake(self.view.frame.width * 0.5, 210)
    point5.layer.bounds = CGRectMake(0, 0, 5, 5)
    point5.backgroundColor = UIColor.init(patternImage: UIImage(named: "point")!)
    self.view.addSubview(point5)
    
    
    UIView.animateWithDuration(5.0, delay: 0.0, options: [.Repeat, .CurveEaseOut], animations: {
        point5.frame.origin.x = self.view.frame.width * 0.5
        point5.frame.origin.y = 20
        point5.center = CGPointMake(self.view.frame.width - 80, 100)
        
        UIView.animateWithDuration(1.0, animations: {
            point1.transform = CGAffineTransformTranslate(point5.transform, 0, 0)
            let scaleAnimation = CABasicAnimation(keyPath: "transform.scale")
            scaleAnimation.fromValue = 1.0
            scaleAnimation.toValue = 1.5
            scaleAnimation.autoreverses = true
            scaleAnimation.fillMode = kCAFillModeForwards
            scaleAnimation.repeatCount = MAXFLOAT
            scaleAnimation.duration = 0.8
            point5.layer.addAnimation(scaleAnimation, forKey: "scaleAnimation")
        })
        
        
    }) { (true) in
        
    }

    let point6 = UIView()
    point6.layer.position = CGPointMake(self.view.frame.width * 0.5, 210)
    point6.layer.bounds = CGRectMake(0, 0, 5, 5)
    point6.backgroundColor = UIColor.init(patternImage: UIImage(named: "point")!)
    self.view.addSubview(point6)
    
    
    UIView.animateWithDuration(5.0, delay: 0.0, options: [.Repeat, .CurveEaseOut], animations: {
        point6.frame.origin.x = self.view.frame.width * 0.5
        point6.frame.origin.y = 20
        point6.center = CGPointMake(self.view.frame.width - 100, 50)
        
        UIView.animateWithDuration(1.0, animations: {
            point1.transform = CGAffineTransformTranslate(point6.transform, 0, 0)
            let scaleAnimation = CABasicAnimation(keyPath: "transform.scale")
            scaleAnimation.fromValue = 0.7
            scaleAnimation.toValue = 1.2
            scaleAnimation.autoreverses = true
            scaleAnimation.fillMode = kCAFillModeForwards
            scaleAnimation.repeatCount = MAXFLOAT
            scaleAnimation.duration = 0.8
            point6.layer.addAnimation(scaleAnimation, forKey: "scaleAnimation")
        })
        
        
    }) { (true) in
        
    }

2. 云

发现放上来这个gif有点卡顿，大家可以试着在真机里跑下看效果。还不错~

cloudy

① 创建云块

func cloudy() {
    // 创建云块
    viewAnimation.layer.position = CGPointMake(100, -10)
    viewAnimation.layer.bounds = CGRectMake(0, 0, 279, 145)
    viewAnimation.backgroundColor = UIColor.init(patternImage: UIImage(named: "大云")!)
    self.view.addSubview(viewAnimation)
    
    leftCloudy.layer.position = CGPointMake(150, 80)
    leftCloudy.layer.bounds = CGRectMake(0, 0, 61, 33)
    leftCloudy.backgroundColor = UIColor.init(patternImage: UIImage(named: "左侧云彩")!)
    self.view.addSubview(leftCloudy)
    
    rightCloudy.layer.position = CGPointMake(300, 30)
    rightCloudy.layer.bounds = CGRectMake(0, 0, 33, 19)
    rightCloudy.backgroundColor = UIColor.init(patternImage: UIImage(named: "右侧云彩")!)
    self.view.addSubview(rightCloudy)
    
    point.layer.position = CGPointMake(self.view.frame.width * 0.5, 100)
    point.layer.bounds = CGRectMake(0, 0, 9, 9)
    point.backgroundColor = UIColor.init(patternImage: UIImage(named: "圆点")!)
    self.view.addSubview(point)
    
    point1.layer.position = CGPointMake(self.view.frame.width * 0.5, 100)
    point1.layer.bounds = CGRectMake(0, 0, 9, 9)
    point1.backgroundColor = UIColor.init(patternImage: UIImage(named: "圆点")!)
    self.view.addSubview(point1)
    
    point2.layer.position = CGPointMake(self.view.frame.width * 0.5, 100)
    point2.layer.bounds = CGRectMake(0, 0, 9, 9)
    point2.backgroundColor = UIColor.init(patternImage: UIImage(named: "圆点")!)
    self.view.addSubview(point2)
    
    point3.layer.position = CGPointMake(self.view.frame.width * 0.5, 100)
    point3.layer.bounds = CGRectMake(0, 0, 9, 9)
    point3.backgroundColor = UIColor.init(patternImage: UIImage(named: "圆点")!)
    self.view.addSubview(point3)

    //播放动画
    playAnimation()
    
}

② 播放动画

func playAnimation()
{
    UIView.animateWithDuration(5.0, delay: 0.0, options: [.Repeat, .Autoreverse, .CurveEaseOut],
                               animations: {
                                self.viewAnimation.frame.origin.x = 0
        },
                               completion: nil)
    
    
    UIView.animateWithDuration(3.0, delay: 0.0, options: [.Repeat, .CurveEaseOut], animations: {
        self.leftCloudy.frame.origin.x = 0
        self.leftCloudy.center = CGPointMake(220, 80);
        self.leftCloudy.transform = CGAffineTransformRotate(CGAffineTransformScale(self.leftCloudy.transform, 1, 1), 0)
        self.leftCloudy.alpha = 0.0
        
        }, completion: nil)
    
    UIView.animateWithDuration(3.0, delay: 0.0, options: [.Repeat, .CurveEaseOut], animations: {
        self.rightCloudy.frame.origin.x = 300
        self.rightCloudy.center = CGPointMake(220, 30)
        self.rightCloudy.transform = CGAffineTransformRotate(CGAffineTransformScale(self.rightCloudy.transform, 1, 1), 0)
        self.rightCloudy.alpha = 0.0
        
    },completion: nil)
    
    
    UIView.animateWithDuration(5.0, delay: 0.0, options: [.Repeat, .CurveEaseOut], animations: {
        self.point.center = CGPointMake(10, 100)

        UIView.animateWithDuration(1.0, animations: { 
            self.point.transform = CGAffineTransformTranslate(self.point.transform, 0, 0)
            let scaleAnimation = CABasicAnimation(keyPath: "transform.scale")
            scaleAnimation.fromValue = 1.0
            scaleAnimation.toValue = 0.6
            scaleAnimation.autoreverses = true
            scaleAnimation.fillMode = kCAFillModeForwards
            scaleAnimation.repeatCount = MAXFLOAT
            scaleAnimation.duration = 0.8
            self.point.layer.addAnimation(scaleAnimation, forKey: "scaleAnimation")
        })
        
        
        }) { (true) in
            
    }
    
    UIView.animateWithDuration(5.0, delay: 0.0, options: [.Repeat, .CurveEaseOut], animations: {
        self.point1.center = CGPointMake(20, 200)
        
        UIView.animateWithDuration(1.0, animations: {
            self.point1.transform = CGAffineTransformTranslate(self.point1.transform, 0, 0)
            let scaleAnimation = CABasicAnimation(keyPath: "transform.scale")
            scaleAnimation.fromValue = 0.6
            scaleAnimation.toValue = 0.3
            scaleAnimation.autoreverses = true
            scaleAnimation.fillMode = kCAFillModeForwards
            scaleAnimation.repeatCount = MAXFLOAT
            scaleAnimation.duration = 0.8
            self.point1.layer.addAnimation(scaleAnimation, forKey: "scaleAnimation")
        })
        
        
    }) { (true) in
        
    }
    
    UIView.animateWithDuration(5.0, delay: 0.0, options: [.Repeat, .CurveEaseOut], animations: {
        self.point2.center = CGPointMake(self.view.frame.width - 15, 120)
        
        UIView.animateWithDuration(1.0, animations: {
            self.point2.transform = CGAffineTransformTranslate(self.point2.transform, 0, 0)
            let scaleAnimation = CABasicAnimation(keyPath: "transform.scale")
            scaleAnimation.fromValue = 1.0
            scaleAnimation.toValue = 0.6
            scaleAnimation.autoreverses = true
            scaleAnimation.fillMode = kCAFillModeForwards
            scaleAnimation.repeatCount = MAXFLOAT
            scaleAnimation.duration = 0.8
            self.point2.layer.addAnimation(scaleAnimation, forKey: "scaleAnimation")
        })
        
        
    }) { (true) in
        
    }
    
    UIView.animateWithDuration(5.0, delay: 0.0, options: [.Repeat, .CurveEaseOut], animations: {
        self.point3.center = CGPointMake(self.view.frame.width - 20, 150)
        
        UIView.animateWithDuration(1.0, animations: {
            self.point3.transform = CGAffineTransformTranslate(self.point3.transform, 0, 0)
            let scaleAnimation = CABasicAnimation(keyPath: "transform.scale")
            scaleAnimation.fromValue = 0.5
            scaleAnimation.toValue = 0.3
            scaleAnimation.autoreverses = true
            scaleAnimation.fillMode = kCAFillModeForwards
            scaleAnimation.repeatCount = MAXFLOAT
            scaleAnimation.duration = 0.8
            self.point3.layer.addAnimation(scaleAnimation, forKey: "scaleAnimation")
        })
        
        
    }) { (true) in
        
    }
    
    
}

3. 雪

雪好像下的还是有点奇怪，很多还控制不好
CAEmitterLayer 这个还是很好用滴~ 冬天来bug了继续改进~

snow.gif

func snow() {
    let pointEmitter = CAEmitterLayer()
    pointEmitter.emitterPosition = CGPointMake(120, -120)
            pointEmitter.emitterSize = CGSizeMake(self.view.frame.width, 0)
    pointEmitter.emitterMode = kCAEmitterLayerSurface
    pointEmitter.emitterShape = kCAEmitterLayerOldestLast
    
    let snow1Cell = CAEmitterCell()
    snow1Cell.name = "point"
    snow1Cell.birthRate = 1 // 出现的速率
    snow1Cell.lifetime = 6.0 // 存活的世界
    snow1Cell.velocity = 40.0  
    snow1Cell.velocityRange = 10
    snow1Cell.yAcceleration = 2
    snow1Cell.alphaSpeed = 30
    snow1Cell.minificationFilterBias = 5.0
    snow1Cell.emissionRange = CGFloat(M_PI)
    snow1Cell.spinRange = CGFloat(M_PI)
    snow1Cell.contents = UIImage(named: "snow1")!.CGImage
    
    let snow2Cell = CAEmitterCell()
    snow2Cell.name = "point"
    snow2Cell.birthRate = 1
    snow2Cell.lifetime = 5.0
    snow2Cell.velocity = 40.0
    snow2Cell.velocityRange = 10
    snow2Cell.yAcceleration = 2
    snow2Cell.alphaSpeed = 30
    snow2Cell.minificationFilterBias = 5.0
    snow2Cell.emissionRange = CGFloat(M_PI)
    snow2Cell.spinRange = CGFloat(M_PI)
    snow2Cell.contents = UIImage(named: "snow2")!.CGImage
    
    let snow3Cell = CAEmitterCell()
    snow3Cell.name = "point"
    snow3Cell.birthRate = 1
    snow3Cell.lifetime = 5.0
    snow3Cell.velocity = 40.0
    snow3Cell.velocityRange = 10
    snow3Cell.yAcceleration = 2
    snow3Cell.alphaSpeed = 30
    snow3Cell.minificationFilterBias = 5.0
    snow3Cell.emissionRange = CGFloat(M_PI)
    snow3Cell.spinRange = CGFloat(M_PI)
    snow3Cell.contents = UIImage(named: "snow3")!.CGImage
    
    let snow4Cell = CAEmitterCell()
    snow4Cell.name = "point"
    snow4Cell.birthRate = 1
    snow4Cell.lifetime = 5.0
    snow4Cell.velocity = 40.0
    snow4Cell.velocityRange = 10
    snow4Cell.yAcceleration = 2
    snow4Cell.alphaSpeed = 30
    snow4Cell.minificationFilterBias = 5.0
    snow4Cell.emissionRange = CGFloat(M_PI)
    snow4Cell.spinRange = CGFloat(M_PI)
    snow4Cell.contents = UIImage(named: "snow4")!.CGImage
    
    pointEmitter.emitterCells = [snow1Cell,snow2Cell,snow3Cell,snow4Cell]
    
    self.view.layer.insertSublayer(pointEmitter, atIndex: 0)
}

4 .雨

雨是我调了最久的，因为之下屏幕的1/5, 要让它的五张图倾斜出一个水平，还是费了些功夫，也许是方法太笨，可以想想下次再做动画的时候好好优化一下~

雨(1).gif

func rain() {
    let rainEmitter = CAEmitterLayer()
    rainEmitter.emitterPosition = CGPointMake(self.view.frame.width, -100)
    rainEmitter.emitterSize = CGSizeMake(10, 10)
    rainEmitter.emitterMode = kCAEmitterLayerSurface
    rainEmitter.emitterShape = kCAEmitterLayerOldestLast
    
    
    let rain1Cell = CAEmitterCell()
    rain1Cell.name = "point"
    rain1Cell.birthRate = 0.7
    rain1Cell.lifetime = 2.0
    rain1Cell.velocity = 50.0
    rain1Cell.velocityRange = 40
    rain1Cell.xAcceleration = -50
    rain1Cell.yAcceleration = 100
    rain1Cell.alphaSpeed = 2
    rain1Cell.emissionLatitude = CGFloat(-3 * M_PI)
    rain1Cell.contents = UIImage(named: "rain")!.CGImage
    
    let rain2Cell = CAEmitterCell()
    rain2Cell.name = "point"
    rain2Cell.birthRate = 0.78
    rain2Cell.lifetime = 2.0
    rain2Cell.velocity = 10.0
    rain2Cell.velocityRange = 40
    rain2Cell.xAcceleration = -50
    rain2Cell.yAcceleration = 100
    rain2Cell.alphaSpeed = 2
    rain2Cell.emissionLatitude = CGFloat(-3 * M_PI)
    rain2Cell.contents = UIImage(named: "rain2")!.CGImage
    
    
    let rain3Cell = CAEmitterCell()
    rain3Cell.name = "point"
    rain3Cell.beginTime = 3.0
    rain3Cell.birthRate = 0.5
    rain3Cell.lifetime = 2.0
    rain3Cell.velocity = 80.0
    rain3Cell.velocityRange = 40
    rain3Cell.xAcceleration = -50
    rain3Cell.yAcceleration = 100
    rain3Cell.alphaSpeed = 2
    rain3Cell.emissionLatitude = CGFloat(-3 * M_PI)
    rain3Cell.contents = UIImage(named: "rain3")!.CGImage
    
    
    let rain4Cell = CAEmitterCell()
    rain4Cell.name = "point"
    rain4Cell.birthRate = 0.5
    rain4Cell.lifetime = 2.0
    rain4Cell.velocity = 90.0
    rain4Cell.velocityRange = 40
    rain4Cell.xAcceleration = -50
    rain4Cell.yAcceleration = 100
    rain4Cell.alphaSpeed = 2
    rain4Cell.emissionLatitude = CGFloat(-3 * M_PI)
    rain4Cell.contents = UIImage(named: "rain4")!.CGImage
    
    
    let rain5Cell = CAEmitterCell()
    rain5Cell.name = "point"
    rain5Cell.birthRate = 0.5
    rain5Cell.lifetime = 2.0
    rain5Cell.velocity = 60.0
    rain5Cell.velocityRange = 40
    rain5Cell.xAcceleration = -50
    rain5Cell.yAcceleration = 100
    rain5Cell.alphaSpeed = 2
    rain5Cell.emissionLatitude = CGFloat(-3 * M_PI)
    rain5Cell.contents = UIImage(named: "rain5")!.CGImage
    rainEmitter.emitterCells = [rain1Cell,rain2Cell,rain3Cell,rain4Cell,rain5Cell]
    self.view.layer.insertSublayer(rainEmitter, atIndex: 0)
}

可以改进的地方，希望大家多多指教~
下面最重要的：
gitHub地址：
https://github.com/SummerOO/CoreAnimationDemo

最后编辑于：2017.12.04 03:09:38

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CoreAnimation 四季天气动画 in Swift

1. 晴

2. 云

3. 雪

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