Swift - 多个mask的动画效果

Swift - 多个mask的动画效果

效果

源码

https://github.com/YouXianMing/Swift-Animations

//
//  TranformFadeView.swift
//  Swift-Animations
//
//  Created by YouXianMing on 16/8/20.
//  Copyright © 2016年 YouXianMing. All rights reserved.
//

import UIKit

enum TranformFadeViewAnimatedType : Int {

    case Fade, Show
}

// MARK: TranformFadeView

class TranformFadeView: UIView {

    // MARK: Convenience init.

    convenience init(frame: CGRect, verticalCount : Int, horizontalCount : Int, fadeDuradtion : NSTimeInterval, animationGapDuration : NSTimeInterval) {

        self.init(frame: frame)
        self.verticalCount        = verticalCount
        self.horizontalCount      = horizontalCount
        self.fadeDuradtion        = fadeDuradtion
        self.animationGapDuration = animationGapDuration
        self.makeConfigEffective()
    }

    // MARK: Properies & funcs.

    /// The content imageView's image.
    var image : UIImage? {

        get { return imageView.image}
        set(newVal) { imageView.image = newVal}
    }

    /// The content imageView's contentMode.
    var imageContentMode: UIViewContentMode {

        get { return imageView.contentMode}
        set(newVal) { imageView.contentMode = newVal}
    }

    /// Vertical direction view's count.
    var verticalCount        : Int!

    /// Horizontal direction view's count.
    var horizontalCount      : Int!

    /// One of the maskView's animation duration, default is 1.0
    var fadeDuradtion        : NSTimeInterval! = 

    /// The animation duration two subViews from allMaskView, default is 0.2
    var animationGapDuration : NSTimeInterval! = 0.2

    /**
     Make the config effective.
     */
    func makeConfigEffective() {

        if verticalCount <  || horizontalCount <  {

            return;
        }

        if allMaskView != nil {

            allMaskView.removeFromSuperview()
        }

        countNumArray.removeAll()

        allMaskView = UIView(frame: bounds)
        maskView    = allMaskView

        let height         = bounds.size.height
        let width          = bounds.size.width
        let maskViewHeight = height / CGFloat(verticalCount)
        let maskViewWidth  = width  / CGFloat(horizontalCount)

        var count : Int =
        for horizontal in  ..< horizontalCount {

            for vertical in  ..< verticalCount {

                let frame                = CGRectMake(maskViewWidth * CGFloat(horizontal), maskViewHeight * CGFloat(vertical), maskViewWidth, maskViewHeight)
                let maskView             = UIView(frame: frame)
                maskView.tag             = maskViewTag + count
                maskView.backgroundColor = UIColor.blackColor()
                allMaskView.addSubview(maskView)

                count = count + ;
            }
        }

        maskViewCount = count

        for i in  ..< maskViewCount {

            countNumArray.append(i)
        }
    }

    /**
     Start transform to fade or show state.

     - parameter animated:    Animated or not.
     - parameter transformTo: Show or fade.
     */
    func start(animated animated : Bool, transformTo : TranformFadeViewAnimatedType) {

        if animated == true {

            let tmpFadeDuradtion = fadeDuradtion        <  ? 1.0 : fadeDuradtion
            let tmpGapDuration   = animationGapDuration <  ? 0.2 : animationGapDuration

            for i in  ..< maskViewCount {

                let tmpView = allMaskView.viewWithTag(maskViewTag + i)

                UIView.animateWithDuration(tmpFadeDuradtion, delay: NSTimeInterval(i) * tmpGapDuration, options: .CurveLinear, animations: {

                    switch transformTo {

                    case .Fade :
                        tmpView?.alpha = 0.0

                    case .Show :
                        tmpView?.alpha = 1.0
                    }

                    }, completion: nil)
            }

        } else {

            for i in  ..< maskViewCount {

                let tmpView = allMaskView.viewWithTag(maskViewTag + i)

                    switch transformTo {

                    case .Fade :
                        tmpView?.alpha = 0.0

                    case .Show :
                        tmpView?.alpha = 1.0
                    }
            }
        }
    }

    // MARK: System methods & Private properties

    private var imageView     : UIImageView!
    private var allMaskView   : UIView!
    private var maskViewCount : Int!
    private var countNumArray : [Int]!
    private var maskViewTag   : Int = 

    override init(frame: CGRect) {

        super.init(frame: frame)

        imageView                     = UIImageView(frame: bounds)
        imageView.layer.masksToBounds = true
        countNumArray                 = [Int]()
        self.addSubview(imageView)
    }

    required init?(coder aDecoder: NSCoder) {

        fatalError("init(coder:) has not been implemented")
    }
}