Swift-EasingAnimation
Swift-EasingAnimation
效果
源码
https://github.com/YouXianMing/UI-Component-Collection
//
// Easing.swift
// Swift-EasingAnimation
//
// Created by YouXianMing on 15/10/21.
//
// https://github.com/YouXianMing
// http://home.cnblogs.com/u/YouXianMing/
// import UIKit enum EasingFunction: Int { case
LinearInterpolation = , // Quadratic easing; p^2
QuadraticEaseIn,
QuadraticEaseOut,
QuadraticEaseInOut, // Cubic easing; p^3
CubicEaseIn,
CubicEaseOut,
CubicEaseInOut, // Quartic easing; p^4
QuarticEaseIn,
QuarticEaseOut,
QuarticEaseInOut, // Quintic easing; p^5
QuinticEaseIn,
QuinticEaseOut,
QuinticEaseInOut, // Sine wave easing; sin(p * PI/2)
SineEaseIn,
SineEaseOut,
SineEaseInOut, // Circular easing; sqrt(1 - p^2)
CircularEaseIn,
CircularEaseOut,
CircularEaseInOut, // Exponential easing, base 2
ExponentialEaseIn,
ExponentialEaseOut,
ExponentialEaseInOut, // Exponentially-damped sine wave easing
ElasticEaseIn,
ElasticEaseOut,
ElasticEaseInOut, // Overshooting cubic easing;
BackEaseIn,
BackEaseOut,
BackEaseInOut, // Exponentially-decaying bounce easing
BounceEaseIn,
BounceEaseOut,
BounceEaseInOut func value() -> ((Double) -> Double) { switch self { case .LinearInterpolation:
return Easing.LinearInterpolation case .QuadraticEaseIn:
return Easing.QuadraticEaseIn case .QuadraticEaseOut:
return Easing.QuadraticEaseOut case .QuadraticEaseInOut:
return Easing.QuadraticEaseInOut case .CubicEaseIn:
return Easing.CubicEaseIn case .CubicEaseOut:
return Easing.CubicEaseOut case .CubicEaseInOut:
return Easing.CubicEaseInOut case .QuarticEaseIn:
return Easing.QuarticEaseIn case .QuarticEaseOut:
return Easing.QuarticEaseOut case .QuarticEaseInOut:
return Easing.QuarticEaseInOut case .QuinticEaseIn:
return Easing.QuinticEaseIn case .QuinticEaseOut:
return Easing.QuinticEaseOut case .QuinticEaseInOut:
return Easing.QuinticEaseInOut case .SineEaseIn:
return Easing.SineEaseIn case .SineEaseOut:
return Easing.SineEaseOut case .SineEaseInOut:
return Easing.SineEaseInOut case .CircularEaseIn:
return Easing.CircularEaseIn case .CircularEaseOut:
return Easing.CircularEaseOut case .CircularEaseInOut:
return Easing.CircularEaseInOut case .ExponentialEaseIn:
return Easing.ExponentialEaseIn case .ExponentialEaseOut:
return Easing.ExponentialEaseOut case .ExponentialEaseInOut:
return Easing.ExponentialEaseInOut case .ElasticEaseIn:
return Easing.ElasticEaseIn case .ElasticEaseOut:
return Easing.ElasticEaseOut case .ElasticEaseInOut:
return Easing.ElasticEaseInOut case .BackEaseIn:
return Easing.BackEaseIn case .BackEaseOut:
return Easing.BackEaseOut case .BackEaseInOut:
return Easing.BackEaseInOut case .BounceEaseIn:
return Easing.BounceEaseIn case .BounceEaseOut:
return Easing.BounceEaseOut case .BounceEaseInOut:
return Easing.BounceEaseInOut
}
}
} class Easing: NSObject { // MARK: Linear interpolation (no easing)
class func LinearInterpolation(p : Double) -> Double { return p
} // MARK: Quadratic easing; p^2
class func QuadraticEaseIn(p : Double) -> Double { return p * p
} class func QuadraticEaseOut(p : Double) -> Double { return -(p * (p - ))
} class func QuadraticEaseInOut(p : Double) -> Double { if (p < 0.5) { return * p * p } else { return (- * p * p) + ( * p) -
}
} // MARK: Cubic easing; p^3
class func CubicEaseIn(p : Double) -> Double { return p * p * p
} class func CubicEaseOut(p : Double) -> Double { let f : Double = (p - )
return f * f * f +
} class func CubicEaseInOut(p : Double) -> Double { if (p < 0.5) { return * p * p * p } else { let f : Double = (( * p) - )
return 0.5 * f * f * f +
}
} // MARK: Quartic easing; p^4
class func QuarticEaseIn(p : Double) -> Double { return p * p * p * p
} class func QuarticEaseOut(p : Double) -> Double { let f : Double = (p - )
return f * f * f * ( - p) +
} class func QuarticEaseInOut(p : Double) -> Double { if(p < 0.5) { return * p * p * p * p } else { let f : Double = (p - );
return - * f * f * f * f +
}
} // MARK: Quintic easing; p^5
class func QuinticEaseIn(p : Double) -> Double { return p * p * p * p * p
} class func QuinticEaseOut(p : Double) -> Double { let f : Double = (p - )
return f * f * f * f * f +
} class func QuinticEaseInOut(p : Double) -> Double { if (p < 0.5) { return * p * p * p * p * p } else { let f : Double = (( * p) - )
return 0.5 * f * f * f * f * f +
}
} // MARK: Sine wave easing; sin(p * PI/2)
class func SineEaseIn(p : Double) -> Double { return sin((p - ) * M_PI_2) +
} class func SineEaseOut(p : Double) -> Double { return sin(p * M_PI_2)
} class func SineEaseInOut(p : Double) -> Double { return 0.5 * ( - cos(p * M_PI))
} // MARK: Circular easing; sqrt(1 - p^2)
class func CircularEaseIn(p : Double) -> Double { return - sqrt( - (p * p))
} class func CircularEaseOut(p : Double) -> Double { return sqrt(( - p) * p)
} class func CircularEaseInOut(p : Double) -> Double { if (p < 0.5) { return 0.5 * ( - sqrt( - * (p * p))) } else { return 0.5 * (sqrt(-(( * p) - ) * (( * p) - )) + )
}
} // MARK: Exponential easing, base 2
class func ExponentialEaseIn(p : Double) -> Double { return (p == 0.0) ? p : pow(, * (p - ))
} class func ExponentialEaseOut(p : Double) -> Double { return (p == 1.0) ? p : - pow(, - * p)
} class func ExponentialEaseInOut(p : Double) -> Double { if (p == 0.0 || p == 1.0) { return p
} if (p < 0.5) { return 0.5 * pow(, ( * p) - ) } else { return -0.5 * pow(, (- * p) + ) +
}
} // MARK: Exponentially-damped sine wave easing
class func ElasticEaseIn(p : Double) -> Double { return sin( * M_PI_2 * p) * pow(, * (p - ))
} class func ElasticEaseOut(p : Double) -> Double { return sin(- * M_PI_2 * (p + )) * pow(, - * p) +
} class func ElasticEaseInOut(p : Double) -> Double { if (p < 0.5) { return 0.5 * sin( * M_PI_2 * ( * p)) * pow(, * (( * p) - )) } else { return 0.5 * (sin(- * M_PI_2 * (( * p - ) + )) * pow(, - * ( * p - )) + )
}
} // MARK: Overshooting cubic easing
class func BackEaseIn(p : Double) -> Double { return p * p * p - p * sin(p * M_PI)
} class func BackEaseOut(p : Double) -> Double { let f : Double = ( - p);
return - (f * f * f - f * sin(f * M_PI))
} class func BackEaseInOut(p : Double) -> Double { if (p < 0.5) { let f : Double = * p
return 0.5 * (f * f * f - f * sin(f * M_PI)) } else { let f : Double = ( - (*p - ))
let tmp : Double = (f * f * f - f * sin(f * M_PI))
return 0.5 * ( - tmp) + 0.5
}
} // MARK: Exponentially-decaying bounce easing
class func BounceEaseIn(p : Double) -> Double { return - BounceEaseOut( - p)
} class func BounceEaseOut(p : Double) -> Double { if (p < /11.0) { return ( * p * p)/16.0 } else if (p < /11.0) { return (/40.0 * p * p) - (/10.0 * p) + /5.0 } else if (p < /10.0) { return (/361.0 * p * p) - (/1805.0 * p) + /1805.0 } else { return (/5.0 * p * p) - (/25.0 * p) + /25.0
}
} class func BounceEaseInOut(p : Double) -> Double { if (p < 0.5) { return 0.5 * BounceEaseIn(p*) } else { return 0.5 * BounceEaseOut(p * - ) + 0.5
}
}
}
//
// EasingValue.swift
// Swift-EasingAnimation
//
// Created by YouXianMing on 15/10/21.
//
// https://github.com/YouXianMing
// http://home.cnblogs.com/u/YouXianMing/
// import UIKit class EasingValue: NSObject { // MARK: var /// 动画函数
var function : EasingFunction! /// 关键帧点数
var frameCount : size_t! // MARK: init
override init() { super.init() function = EasingFunction.SineEaseIn
frameCount =
} init(withFunction : EasingFunction, frameCount : size_t) { super.init() self.function = withFunction
self.frameCount = frameCount
} // MARK: func /**
计算关键帧 - parameter fromValue: 起始值
- parameter toValue: 结束值 - returns: 关键帧值数组
*/
func frameValueWith(fromValue fromValue : Double, toValue : Double) -> [AnyObject] { let values = NSMutableArray(capacity: frameCount) var t : Double = 0.0
let dt : Double = 1.0 / (Double(frameCount) - ) for var i = ; i < frameCount; ++i, t += dt { let value = fromValue + (function.value())(t) * (toValue - fromValue)
values.addObject(value)
} return values as [AnyObject]
} /**
计算关键帧点 - parameter fromPoint: 起始点
- parameter toPoint: 结束点 - returns: 关键帧点数组
*/
func pointValueWith(fromPoint fromPoint : CGPoint, toPoint : CGPoint) -> [AnyObject] { let values = NSMutableArray(capacity: frameCount) var t : Double = 0.0
let dt : Double = 1.0 / (Double(frameCount) - ) for var i = ; i < frameCount; ++i, t += dt { let x : Double = Double(fromPoint.x) + (function.value())(t) * (Double(toPoint.x) - Double(fromPoint.x))
let y : Double = Double(fromPoint.y) + (function.value())(t) * (Double(toPoint.y) - Double(fromPoint.y))
let point : CGPoint = CGPoint(x : x, y : y)
values.addObject(NSValue(CGPoint: point))
} return values as [AnyObject]
} /**
计算关键帧尺寸 - parameter fromSize: 起始尺寸
- parameter toSize: 结束尺寸 - returns: 关键帧尺寸数组
*/
func sizeValueWith(fromSize fromSize : CGSize, toSize : CGSize) -> [AnyObject] { let values = NSMutableArray(capacity: frameCount) var t : Double = 0.0
let dt : Double = 1.0 / (Double(frameCount) - ) for var i = ; i < frameCount; ++i, t += dt { let width : Double = Double(fromSize.width) + (function.value())(t) * (Double(toSize.width) - Double(fromSize.width))
let height : Double = Double(fromSize.height) + (function.value())(t) * (Double(toSize.height) - Double(fromSize.height))
let size : CGSize = CGSize(width: width, height: height)
values.addObject(NSValue(CGSize : size))
} return values as [AnyObject]
}
}
//
// ComplexEasingValue.swift
// Swift-EasingAnimation
//
// Created by YouXianMing on 15/10/21.
//
// https://github.com/YouXianMing
// http://home.cnblogs.com/u/YouXianMing/
// import UIKit class ComplexEasingValue: EasingValue { /// 点A的动画函数（如果是 size，则点 A 表示 width；如果是 point，则点 A 表示 x）
var functionA : EasingFunction! /// 点B的动画函数（如果是 size，则点 B 表示 height；如果是 point，则点 B 表示 y）
var functionB : EasingFunction! // MARK: init
override init() { super.init() functionA = EasingFunction.SineEaseIn
functionB = EasingFunction.SineEaseIn
frameCount =
} init(withFunctionA : EasingFunction, FunctionB : EasingFunction, frameCount : size_t) { super.init() functionA = withFunctionA
functionB = FunctionB
self.frameCount = frameCount
} /**
计算关键帧 - parameter fromValue: 起始值
- parameter toValue: 结束值 - returns: 关键帧值数组
*/
override func pointValueWith(fromPoint fromPoint : CGPoint, toPoint : CGPoint) -> [AnyObject] { let values = NSMutableArray(capacity: frameCount) var t : Double = 0.0
let dt : Double = 1.0 / (Double(frameCount) - ) for var i = ; i < frameCount; ++i, t += dt { let x : Double = Double(fromPoint.x) + (functionA.value())(t) * (Double(toPoint.x) - Double(fromPoint.x))
let y : Double = Double(fromPoint.y) + (functionB.value())(t) * (Double(toPoint.y) - Double(fromPoint.y))
let point : CGPoint = CGPoint(x : x, y : y)
values.addObject(NSValue(CGPoint: point))
} return values as [AnyObject]
} /**
计算关键帧点 - parameter fromPoint: 起始点
- parameter toPoint: 结束点 - returns: 关键帧点数组
*/
override func sizeValueWith(fromSize fromSize : CGSize, toSize : CGSize) -> [AnyObject] { let values = NSMutableArray(capacity: frameCount) var t : Double = 0.0
let dt : Double = 1.0 / (Double(frameCount) - ) for var i = ; i < frameCount; ++i, t += dt { let width : Double = Double(fromSize.width) + (functionA.value())(t) * (Double(toSize.width) - Double(fromSize.width))
let height : Double = Double(fromSize.height) + (functionB.value())(t) * (Double(toSize.height) - Double(fromSize.height))
let size : CGSize = CGSize(width: width, height: height)
values.addObject(NSValue(CGSize : size))
} return values as [AnyObject]
}
}
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