Add some new transitions.

Erase, Morph, CircleErase...

.gitignore

@@ -7,3 +7,9 @@ Examples/SimpleVideoExport/SimpleVideoExport.xcodeproj/project.xcworkspace/xcuse
 Examples/SimpleRealtimeFilterPlayback/SimpleRealtimeFilterPlayback.xcodeproj/xcuserdata
 Examples/SimpleVideoTransition/SimpleVideoTransition.xcodeproj/project.xcworkspace/xcuserdata/renzhumacro.xcuserdatad
 Examples/SimpleVideoTransition/SimpleVideoTransition.xcodeproj/xcuserdata/renzhumacro.xcuserdatad
+Examples/SimpleVideoAnimation/Pods/Pods.xcodeproj/xcuserdata/renzhumacro.xcuserdatad
+Examples/SimpleVideoAnimation/SimpleVIdeoAnimation.xcodeproj/project.xcworkspace/xcuserdata
+Examples/SimpleVideoAnimation/SimpleVIdeoAnimation.xcodeproj/xcuserdata
+Examples/SimpleVideoAnimation/SimpleVideoAnimation.xcworkspace/xcuserdata
+Examples/SimpleVideoTransitionSwitch/SimpleVideoTransitionSwitch.xcodeproj/xcuserdata
+Examples/SimpleVideoEditor/SimpleVideoEditor.xcodeproj/project.xcworkspace/xcuserdata

Examples/SimpleFourSquareVideo/SimpleFourSquareVideo/ViewController.swift

@@ -37,13 +37,17 @@ class ViewController: UIViewController {
         let backgroundFrame = self.renderView.frame
         let backgroundSize = CGSize(width: backgroundFrame.size.width * 1.5,
                                     height: backgroundFrame.size.height * 1.5)
-        MetalVideoProcessBackground.canvasSize = backgroundSize  
+        MetalVideoProcessBackground.canvasSize = backgroundSize
+        
         
         let transform1 = MetalVideoProcessTransformFilter()
         let transform2 = MetalVideoProcessTransformFilter()
         let transform3 = MetalVideoProcessTransformFilter()
         let transform4 = MetalVideoProcessTransformFilter()
-
+        
+     
+    
+        
         transform1.stretchType = .aspectToFit
         transform1.roi = CGRect(x: 0.1, y: 0.1,
                                 width: 0.8,
@@ -79,37 +83,49 @@ class ViewController: UIViewController {
             player.addTarget(transform4, trackID: item4.trackID, targetTrackId: item4.trackID)
             
             transform1.saveUniformSettings(forTimelineRange: item1.timeRange, trackID: item1.trackID)
-
+//
             transform2.saveUniformSettings(forTimelineRange: item2.timeRange, trackID: item2.trackID)
-
+//
             transform3.saveUniformSettings(forTimelineRange: item3.timeRange, trackID: item3.trackID)
-
+//
             transform4.saveUniformSettings(forTimelineRange: item4.timeRange, trackID: item4.trackID)
 
             let layer1 = MetalVideoProcessBlendFilter()
             
             background --> layer1
             transform1 --> layer1
+            
+//            layer1.saveUniformSettings(forTimelineRange: item1.timeRange, trackID: item1.trackID)
 
             let layer2 = MetalVideoProcessBlendFilter()
             
             layer1 --> layer2
             transform2 --> layer2
-
+//
+//            layer2.saveUniformSettings(forTimelineRange: item2.timeRange, trackID: item2.trackID)
+//
             let layer3 = MetalVideoProcessBlendFilter()
             
             layer2 --> layer3
             transform3 --> layer3
-   
+//            layer3.saveUniformSettings(forTimelineRange: item3.timeRange, trackID: item3.trackID)
+            
             let layer4 = MetalVideoProcessBlendFilter()
             
             layer3 --> layer4
             transform4 --> layer4
-     
+//            layer4.saveUniformSettings(forTimelineRange: item4.timeRange, trackID: item4.trackID)
+//
+            
             self.progress.minimumValue = 0.0
             self.progress.maximumValue = Float(playerItem.duration.seconds)
+           
 
+           
             layer4 --> renderView
+//            layer3 --> self.renderView
+//            transform1 --> self.renderView
+
             self.player = player
             self.player?.playerDelegate = self
             

Examples/SimpleVideoAnimation/Podfile

@@ -0,0 +1,11 @@
+# Uncomment the next line to define a global platform for your project
+# platform :ios, '9.0'
+
+target 'SimpleVideoAnimation' do
+  # Comment the next line if you don't want to use dynamic frameworks
+  use_frameworks!
+
+  # Pods for SimpleVideoAnimation
+  pod 'PryntTrimmerView'
+  
+end

Examples/SimpleVideoAnimation/Podfile.lock

@@ -0,0 +1,16 @@
+PODS:
+  - PryntTrimmerView (4.0.0)
+
+DEPENDENCIES:
+  - PryntTrimmerView
+
+SPEC REPOS:
+  trunk:
+    - PryntTrimmerView
+
+SPEC CHECKSUMS:
+  PryntTrimmerView: 67e67573ffd4c073f1308effa66aefd0cfa667a0
+
+PODFILE CHECKSUM: 4473f02a1528566660f9c5ed79ea1d9d7df2096d
+
+COCOAPODS: 1.8.4

Examples/SimpleVideoAnimation/Pods/Manifest.lock

@@ -0,0 +1,16 @@
+PODS:
+  - PryntTrimmerView (4.0.0)
+
+DEPENDENCIES:
+  - PryntTrimmerView
+
+SPEC REPOS:
+  trunk:
+    - PryntTrimmerView
+
+SPEC CHECKSUMS:
+  PryntTrimmerView: 67e67573ffd4c073f1308effa66aefd0cfa667a0
+
+PODFILE CHECKSUM: 4473f02a1528566660f9c5ed79ea1d9d7df2096d
+
+COCOAPODS: 1.8.4

Examples/SimpleVideoAnimation/Pods/Pods.xcodeproj/project.pbxproj

@@ -0,0 +1,632 @@
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+}

Examples/SimpleVideoAnimation/Pods/PryntTrimmerView/LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2017 Prynt
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

Examples/SimpleVideoAnimation/Pods/PryntTrimmerView/PryntTrimmerView/Classes/Cropper/CropMaskView.swift

@@ -0,0 +1,114 @@
+//
+//  CropMaskView.swift
+//  PryntTrimmerView
+//
+//  Created by Henry on 10/04/2017.
+//  Copyright © 2017 CocoaPods. All rights reserved.
+//
+
+import UIKit
+
+class CropMaskView: UIView {
+
+    let cropBoxView = UIView()
+    let frameView = UIView()
+    let maskLayer = CAShapeLayer()
+    let frameLayer = CAShapeLayer()
+
+    private let lineWidth: CGFloat = 4.0
+    private var cropFrame: CGRect = CGRect.zero
+
+    override init(frame: CGRect) {
+        super.init(frame: frame)
+        setupSubviews()
+    }
+
+    required init?(coder aDecoder: NSCoder) {
+        super.init(coder: aDecoder)
+        setupSubviews()
+    }
+
+    private func setupSubviews() {
+
+        maskLayer.fillRule = CAShapeLayerFillRule.evenOdd
+        maskLayer.fillColor = UIColor.black.cgColor
+        maskLayer.opacity = 1.0
+
+        frameLayer.strokeColor = UIColor.white.cgColor
+        frameLayer.fillColor = UIColor.clear.cgColor
+
+        frameView.layer.addSublayer(frameLayer)
+        cropBoxView.layer.mask = maskLayer
+
+        cropBoxView.translatesAutoresizingMaskIntoConstraints = false
+        cropBoxView.backgroundColor = UIColor.white.withAlphaComponent(0.7)
+        addSubview(cropBoxView)
+        addSubview(frameView)
+
+        cropBoxView.leftAnchor.constraint(equalTo: leftAnchor).isActive = true
+        cropBoxView.rightAnchor.constraint(equalTo: rightAnchor).isActive = true
+        cropBoxView.bottomAnchor.constraint(equalTo: bottomAnchor).isActive = true
+        cropBoxView.topAnchor.constraint(equalTo: topAnchor).isActive = true
+    }
+
+    override func layoutSubviews() {
+        super.layoutSubviews()
+
+        let path = UIBezierPath(rect: bounds)
+        let framePath = UIBezierPath(rect: cropFrame)
+        path.append(framePath)
+        path.usesEvenOddFillRule = true
+        maskLayer.path = path.cgPath
+
+        framePath.lineWidth = lineWidth
+        frameLayer.path = framePath.cgPath
+    }
+
+    func setCropFrame(_ frame: CGRect, animated: Bool) {
+
+        cropFrame = frame
+        guard animated else {
+            setNeedsLayout()
+            return
+        }
+
+        let (path, framePath) = getPaths(with: cropFrame)
+
+        CATransaction.begin()
+
+        let animation = getPathAnimation(with: path)
+        maskLayer.path = maskLayer.presentation()?.path
+        frameLayer.path = frameLayer.presentation()?.path
+
+        maskLayer.removeAnimation(forKey: "maskPath")
+        maskLayer.add(animation, forKey: "maskPath")
+
+        animation.toValue = framePath
+        frameLayer.removeAnimation(forKey: "framePath")
+        frameLayer.add(animation, forKey: "framePath")
+        CATransaction.commit()
+    }
+
+    private func getPaths(with cropFrame: CGRect) -> (path: CGPath, framePath: CGPath) {
+
+        let path = UIBezierPath(rect: bounds)
+        let framePath = UIBezierPath(rect: cropFrame)
+        framePath.lineWidth = lineWidth
+        path.append(framePath)
+        path.usesEvenOddFillRule = true
+
+        return (path.cgPath, framePath.cgPath)
+    }
+
+    private func getPathAnimation(with path: CGPath) -> CABasicAnimation {
+
+        let animation = CABasicAnimation(keyPath: "path")
+        animation.toValue = path
+        animation.duration = 0.3
+        animation.timingFunction = CAMediaTimingFunction(name: CAMediaTimingFunctionName.easeInEaseOut)
+        animation.fillMode = CAMediaTimingFillMode.both
+        animation.isRemovedOnCompletion = false
+
+        return animation
+    }
+}

Examples/SimpleVideoAnimation/Pods/PryntTrimmerView/PryntTrimmerView/Classes/Cropper/VideoCropView.swift

@@ -0,0 +1,123 @@
+//
+//  VideoCropView.swift
+//  PryntTrimmerView
+//
+//  Created by Henry on 07/04/2017.
+//  Copyright © 2017 CocoaPods. All rights reserved.
+//
+
+import UIKit
+import AVFoundation
+
+private let margin: CGFloat = 16
+
+/// A view to preview a video inside an `AVPlayer`, with a scroll view to be able to select a specific area of the video.
+/// Simply set the `asset` property to load you video inside the view, and use the `getImageCropFrame` method to retrieve the
+/// selected frame of the video.
+public class VideoCropView: UIView {
+
+    let videoScrollView = VideoScrollView()
+    let cropMaskView = CropMaskView()
+
+    /// The asset being cropped. Setting the property will load the asset in the `AVPlayer` contained in the scroll view.
+    public var asset: AVAsset? {
+        didSet {
+            if let asset = asset {
+                videoScrollView.setupVideo(with: asset)
+            }
+        }
+    }
+
+    var cropFrame = CGRect.zero
+
+    /// The current aspect ratio of the crop view.
+    public private(set) var aspectRatio = CGSize(width: 1, height: 1)
+
+    /// The player used in the scroll view. Use it if you want to seek a specific time of your video.
+    public var player: AVPlayer? {
+        return videoScrollView.player
+    }
+
+    override init(frame: CGRect) {
+        super.init(frame: frame)
+        setupSubviews()
+    }
+
+    required public init?(coder aDecoder: NSCoder) {
+        super.init(coder: aDecoder)
+        setupSubviews()
+    }
+
+    private func setupSubviews() {
+
+        videoScrollView.translatesAutoresizingMaskIntoConstraints = false
+        addSubview(videoScrollView)
+
+        videoScrollView.leftAnchor.constraint(equalTo: leftAnchor).isActive = true
+        videoScrollView.rightAnchor.constraint(equalTo: rightAnchor).isActive = true
+        videoScrollView.bottomAnchor.constraint(equalTo: bottomAnchor).isActive = true
+        videoScrollView.topAnchor.constraint(equalTo: topAnchor).isActive = true
+
+        cropMaskView.isUserInteractionEnabled = false
+        cropMaskView.translatesAutoresizingMaskIntoConstraints = false
+
+        addSubview(cropMaskView)
+
+        cropMaskView.leftAnchor.constraint(equalTo: leftAnchor).isActive = true
+        cropMaskView.rightAnchor.constraint(equalTo: rightAnchor).isActive = true
+        cropMaskView.bottomAnchor.constraint(equalTo: bottomAnchor).isActive = true
+        cropMaskView.topAnchor.constraint(equalTo: topAnchor).isActive = true
+
+        setAspectRatio(aspectRatio, animated: false)
+    }
+
+    /// Set the aspect ratio for the cropping box.
+    ///
+    /// [Issue #3]: https://github.com/HHK1/PryntTrimmerView/issues/3
+    /// - Parameters:
+    ///   - aspectRatio: The desired aspect ratio.
+    ///   - animated: true if you want to animate the change. TODO: the animation glitches sometimes. See [Issue #3]
+    public func setAspectRatio(_ aspectRatio: CGSize, animated: Bool) {
+
+        self.aspectRatio = aspectRatio
+        let ratio = aspectRatio.width / aspectRatio.height
+        let cropBoxWidth = ratio > 1 ? (bounds.width - 2 * margin) : (bounds.height - 2 * margin)  * ratio
+        let cropBoxHeight = cropBoxWidth / ratio
+        let origin = CGPoint(x: (bounds.width - cropBoxWidth) / 2, y: (bounds.height - cropBoxHeight) / 2)
+        cropFrame = CGRect(origin: origin, size: CGSize(width: cropBoxWidth, height: cropBoxHeight))
+
+        let edgeInsets = UIEdgeInsets(top: origin.y, left: origin.x, bottom: origin.y, right: origin.x)
+        let duration: TimeInterval = animated ? 0.15 : 0.0
+
+        cropMaskView.setCropFrame(cropFrame, animated: animated)
+        UIView.animate(withDuration: duration, delay: 0, options: [.beginFromCurrentState, .curveEaseInOut], animations: {
+            self.videoScrollView.scrollView.contentInset = edgeInsets
+        }, completion: nil)
+        videoScrollView.setZoomScaleAndCenter(animated: animated)
+    }
+
+    /// Get the currently selected frame of the asset. You can then use it to perform the actual cropping of the video or of an
+    /// isolated image
+    public func getImageCropFrame() -> CGRect {
+
+        let imageSize = videoScrollView.assetSize
+        let contentSize = videoScrollView.scrollView.contentSize
+        let cropBoxFrame = cropFrame
+        let contentOffset = videoScrollView.scrollView.contentOffset
+        let edgeInsets = videoScrollView.scrollView.contentInset
+
+        var frame = CGRect.zero
+        frame.origin.x = floor((contentOffset.x + edgeInsets.left) * (imageSize.width / contentSize.width))
+        frame.origin.x = max(0, frame.origin.x)
+
+        frame.origin.y = floor((contentOffset.y + edgeInsets.top) * (imageSize.height / contentSize.height))
+        frame.origin.y = max(0, frame.origin.y)
+
+        frame.size.width = ceil(cropBoxFrame.size.width * (imageSize.width / contentSize.width))
+        frame.size.width = min(imageSize.width, frame.size.width)
+
+        frame.size.height = ceil(cropBoxFrame.size.height * (imageSize.height / contentSize.height))
+        frame.size.height = min(imageSize.height, frame.size.height)
+        return frame
+    }
+}

Examples/SimpleVideoAnimation/Pods/PryntTrimmerView/PryntTrimmerView/Classes/Cropper/VideoScrollView.swift

@@ -0,0 +1,103 @@
+//
+//  VideoScrollView.swift
+//  PryntTrimmerView
+//
+//  Created by Henry on 10/04/2017.
+//  Copyright © 2017 CocoaPods. All rights reserved.
+//
+
+import UIKit
+import AVFoundation
+
+class VideoScrollView: UIView {
+
+    let scrollView = UIScrollView()
+    var contentView = UIView()
+    var assetSize = CGSize.zero
+
+    var playerItem: AVPlayerItem?
+    var player: AVPlayer?
+    var playerLayer: AVPlayerLayer?
+
+    override init(frame: CGRect) {
+        super.init(frame: frame)
+        setupSubviews()
+    }
+
+    required init?(coder aDecoder: NSCoder) {
+        super.init(coder: aDecoder)
+        setupSubviews()
+    }
+
+    private func setupSubviews() {
+
+        scrollView.showsVerticalScrollIndicator = false
+        scrollView.showsHorizontalScrollIndicator = false
+        scrollView.translatesAutoresizingMaskIntoConstraints = false
+        scrollView.addSubview(contentView)
+        scrollView.delegate = self
+        addSubview(scrollView)
+
+        scrollView.leftAnchor.constraint(equalTo: leftAnchor).isActive = true
+        scrollView.rightAnchor.constraint(equalTo: rightAnchor).isActive = true
+        scrollView.bottomAnchor.constraint(equalTo: bottomAnchor).isActive = true
+        scrollView.topAnchor.constraint(equalTo: topAnchor).isActive = true
+    }
+
+    func setupVideo(with asset: AVAsset) {
+
+        guard let track = asset.tracks(withMediaType: AVMediaType.video).first else { return }
+        let trackSize = track.naturalSize.applying(track.preferredTransform)
+        assetSize = CGSize(width: abs(trackSize.width), height: abs(trackSize.height))
+
+        scrollView.zoomScale = 1.0 // Reset zoom scale before changing the frame of the content view.
+        playerItem = AVPlayerItem(asset: asset)
+        let playerFrame = CGRect(x: 0, y: 0, width: assetSize.width, height: assetSize.height)
+        addVideoLayer(with: playerFrame)
+
+        scrollView.contentSize = assetSize
+        setZoomScaleAndCenter(animated: false)
+    }
+
+    private func addVideoLayer(with playerFrame: CGRect) {
+
+        playerLayer?.removeFromSuperlayer()
+        player = AVPlayer(playerItem: playerItem)
+        playerLayer = AVPlayerLayer(player: player)
+        playerLayer?.frame = playerFrame
+        playerLayer?.videoGravity = AVLayerVideoGravity.resizeAspectFill
+
+        contentView.frame = playerFrame
+        contentView.layer.addSublayer(playerLayer!)
+    }
+
+    func setZoomScaleAndCenter(animated: Bool) {
+
+        guard assetSize != CGSize.zero else { return }
+
+        let scrollWidth = scrollView.bounds.width - scrollView.contentInset.left - scrollView.contentInset.right
+        let scrollHeight = scrollView.bounds.height - scrollView.contentInset.top - scrollView.contentInset.bottom
+        let scale = max(scrollWidth / assetSize.width, scrollHeight / assetSize.height)
+        scrollView.minimumZoomScale = scale
+        scrollView.maximumZoomScale = 3.0
+
+        var offset = scrollView.contentOffset
+        offset.x = -scrollView.contentInset.left - (scrollWidth - assetSize.width * scale) / 2
+        offset.y = -scrollView.contentInset.top - (scrollHeight - assetSize.height * scale) / 2
+
+        scrollView.setZoomScale(scale, animated: animated)
+        scrollView.setContentOffset(offset, animated: animated)
+    }
+}
+
+extension VideoScrollView: UIScrollViewDelegate {
+
+    func viewForZooming(in scrollView: UIScrollView) -> UIView? {
+        return contentView
+    }
+
+    func scrollViewDidEndZooming(_ scrollView: UIScrollView, with view: UIView?, atScale scale: CGFloat) {
+        let scaledAssetSize = CGSize(width: assetSize.width * scale, height: assetSize.height * scale)
+        scrollView.contentSize = scaledAssetSize
+    }
+}

Examples/SimpleVideoAnimation/Pods/PryntTrimmerView/PryntTrimmerView/Classes/Parents/AVAssetTimeSelector.swift

@@ -0,0 +1,85 @@
+//
+//  AVAssetTimeSelector.swift
+//  Pods
+//
+//  Created by Henry on 06/04/2017.
+//
+//
+
+import UIKit
+import AVFoundation
+
+/// A generic class to display an asset into a scroll view with thumbnail images, and make the equivalence between a time in
+// the asset and a position in the scroll view
+public class AVAssetTimeSelector: UIView, UIScrollViewDelegate {
+
+    let assetPreview = AssetVideoScrollView()
+
+    /// The asset to be displayed in the underlying scroll view. Setting a new asset will automatically refresh the thumbnails.
+    public var asset: AVAsset? {
+        didSet {
+            assetDidChange(newAsset: asset)
+        }
+    }
+
+    override init(frame: CGRect) {
+        super.init(frame: frame)
+        setupSubviews()
+    }
+
+    required public init?(coder aDecoder: NSCoder) {
+        super.init(coder: aDecoder)
+        setupSubviews()
+    }
+
+    func setupSubviews() {
+        setupAssetPreview()
+        constrainAssetPreview()
+    }
+
+    // MARK: - Asset Preview
+
+    func setupAssetPreview() {
+
+        assetPreview.translatesAutoresizingMaskIntoConstraints = false
+        assetPreview.delegate = self
+        addSubview(assetPreview)
+    }
+
+    func constrainAssetPreview() {
+        assetPreview.leftAnchor.constraint(equalTo: leftAnchor).isActive = true
+        assetPreview.rightAnchor.constraint(equalTo: rightAnchor).isActive = true
+        assetPreview.topAnchor.constraint(equalTo: topAnchor).isActive = true
+        assetPreview.bottomAnchor.constraint(equalTo: bottomAnchor).isActive = true
+    }
+
+    func assetDidChange(newAsset: AVAsset?) {
+        if let asset = newAsset {
+            assetPreview.regenerateThumbnails(for: asset)
+        }
+    }
+
+    // MARK: - Time & Position Equivalence
+
+    var durationSize: CGFloat {
+        return assetPreview.contentSize.width
+    }
+
+    func getTime(from position: CGFloat) -> CMTime? {
+        guard let asset = asset else {
+            return nil
+        }
+        let normalizedRatio = max(min(1, position / durationSize), 0)
+        let positionTimeValue = Double(normalizedRatio) * Double(asset.duration.value)
+        return CMTime(value: Int64(positionTimeValue), timescale: asset.duration.timescale)
+    }
+
+    func getPosition(from time: CMTime) -> CGFloat? {
+        guard let asset = asset else {
+            return nil
+        }
+        let timeRatio = CGFloat(time.value) * CGFloat(asset.duration.timescale) /
+            (CGFloat(time.timescale) * CGFloat(asset.duration.value))
+        return timeRatio * durationSize
+    }
+}

Examples/SimpleVideoAnimation/Pods/PryntTrimmerView/PryntTrimmerView/Classes/Parents/AssetVideoScrollView.swift

@@ -0,0 +1,166 @@
+//
+//  AssetVideoScrollView.swift
+//  PryntTrimmerView
+//
+//  Created by HHK on 28/03/2017.
+//  Copyright © 2017 Prynt. All rights reserved.
+//
+
+import AVFoundation
+import UIKit
+
+class AssetVideoScrollView: UIScrollView {
+
+    private var widthConstraint: NSLayoutConstraint?
+
+    let contentView = UIView()
+    var maxDuration: Double = 15
+    private var generator: AVAssetImageGenerator?
+
+    override init(frame: CGRect) {
+        super.init(frame: frame)
+        setupSubviews()
+    }
+
+    required init?(coder aDecoder: NSCoder) {
+        super.init(coder: aDecoder)
+        setupSubviews()
+    }
+
+    private func setupSubviews() {
+
+        backgroundColor = .clear
+        showsVerticalScrollIndicator = false
+        showsHorizontalScrollIndicator = false
+        clipsToBounds = true
+
+        contentView.backgroundColor = .clear
+        contentView.translatesAutoresizingMaskIntoConstraints = false
+        contentView.tag = -1
+        addSubview(contentView)
+
+        contentView.leftAnchor.constraint(equalTo: leftAnchor).isActive = true
+        contentView.topAnchor.constraint(equalTo: topAnchor).isActive = true
+        contentView.bottomAnchor.constraint(equalTo: bottomAnchor).isActive = true
+        widthConstraint = contentView.widthAnchor.constraint(equalTo: widthAnchor, multiplier: 1.0)
+        widthConstraint?.isActive = true
+    }
+
+    override func layoutSubviews() {
+        super.layoutSubviews()
+        contentSize = contentView.bounds.size
+    }
+
+    internal func regenerateThumbnails(for asset: AVAsset) {
+        guard let thumbnailSize = getThumbnailFrameSize(from: asset), thumbnailSize.width != 0 else {
+            print("Could not calculate the thumbnail size.")
+            return
+        }
+
+        generator?.cancelAllCGImageGeneration()
+        removeFormerThumbnails()
+        let newContentSize = setContentSize(for: asset)
+        let visibleThumbnailsCount = Int(ceil(frame.width / thumbnailSize.width))
+        let thumbnailCount = Int(ceil(newContentSize.width / thumbnailSize.width))
+        addThumbnailViews(thumbnailCount, size: thumbnailSize)
+        let timesForThumbnail = getThumbnailTimes(for: asset, numberOfThumbnails: thumbnailCount)
+        generateImages(for: asset, at: timesForThumbnail, with: thumbnailSize, visibleThumnails: visibleThumbnailsCount)
+    }
+
+    private func getThumbnailFrameSize(from asset: AVAsset) -> CGSize? {
+        guard let track = asset.tracks(withMediaType: AVMediaType.video).first else { return nil}
+
+        let assetSize = track.naturalSize.applying(track.preferredTransform)
+
+        let height = frame.height
+        let ratio = assetSize.width / assetSize.height
+        let width = height * ratio
+        return CGSize(width: abs(width), height: abs(height))
+    }
+
+    private func removeFormerThumbnails() {
+        contentView.subviews.forEach({ $0.removeFromSuperview() })
+    }
+
+    private func setContentSize(for asset: AVAsset) -> CGSize {
+
+        let contentWidthFactor = CGFloat(max(1, asset.duration.seconds / maxDuration))
+        widthConstraint?.isActive = false
+        widthConstraint = contentView.widthAnchor.constraint(equalTo: widthAnchor, multiplier: contentWidthFactor)
+        widthConstraint?.isActive = true
+        layoutIfNeeded()
+        return contentView.bounds.size
+    }
+
+    private func addThumbnailViews(_ count: Int, size: CGSize) {
+
+        for index in 0..<count {
+
+            let thumbnailView = UIImageView(frame: CGRect.zero)
+            thumbnailView.clipsToBounds = true
+
+            let viewEndX = CGFloat(index) * size.width + size.width
+
+            if viewEndX > contentView.frame.width {
+                thumbnailView.frame.size = CGSize(width: size.width + (contentView.frame.width - viewEndX), height: size.height)
+                thumbnailView.contentMode = .scaleAspectFill
+            } else {
+                thumbnailView.frame.size = size
+                thumbnailView.contentMode = .scaleAspectFit
+            }
+
+            thumbnailView.frame.origin = CGPoint(x: CGFloat(index) * size.width, y: 0)
+            thumbnailView.tag = index
+            contentView.addSubview(thumbnailView)
+        }
+    }
+
+    private func getThumbnailTimes(for asset: AVAsset, numberOfThumbnails: Int) -> [NSValue] {
+
+        let timeIncrement = (asset.duration.seconds * 1000) / Double(numberOfThumbnails)
+        var timesForThumbnails = [NSValue]()
+        for index in 0..<numberOfThumbnails {
+            let cmTime = CMTime(value: Int64(timeIncrement * Float64(index)), timescale: 1000)
+            let nsValue = NSValue(time: cmTime)
+            timesForThumbnails.append(nsValue)
+        }
+        return timesForThumbnails
+    }
+
+    private func generateImages(for asset: AVAsset, at times: [NSValue], with maximumSize: CGSize, visibleThumnails: Int) {
+
+        generator = AVAssetImageGenerator(asset: asset)
+        generator?.appliesPreferredTrackTransform = true
+        let scaledSize = CGSize(width: maximumSize.width * UIScreen.main.scale, height: maximumSize.height *  UIScreen.main.scale)
+        generator?.maximumSize = scaledSize
+        var count = 0
+
+        let handler: AVAssetImageGeneratorCompletionHandler = { [weak self] (_, cgimage, _, result, error) in
+            if let cgimage = cgimage, error == nil && result == AVAssetImageGenerator.Result.succeeded {
+                DispatchQueue.main.async(execute: { [weak self] () -> Void in
+
+                    if count == 0 {
+                        self?.displayFirstImage(cgimage, visibleThumbnails: visibleThumnails)
+                    }
+                    self?.displayImage(cgimage, at: count)
+                    count += 1
+                })
+            }
+        }
+
+        generator?.generateCGImagesAsynchronously(forTimes: times, completionHandler: handler)
+    }
+
+    private func displayFirstImage(_ cgImage: CGImage, visibleThumbnails: Int) {
+        for i in 0...visibleThumbnails {
+            displayImage(cgImage, at: i)
+        }
+    }
+
+    private func displayImage(_ cgImage: CGImage, at index: Int) {
+        if let imageView = contentView.viewWithTag(index) as? UIImageView {
+            let uiimage = UIImage(cgImage: cgImage, scale: 1.0, orientation: UIImage.Orientation.up)
+            imageView.image = uiimage
+        }
+    }
+}

Examples/SimpleVideoAnimation/Pods/PryntTrimmerView/PryntTrimmerView/Classes/ThumbSelectorView.swift

@@ -0,0 +1,178 @@
+//
+//  ThumbSelectorView.swift
+//  Pods
+//
+//  Created by Henry on 06/04/2017.
+//
+//
+
+import UIKit
+import AVFoundation
+
+/// A delegate to be notified of when the thumb position has changed. Useful to link an instance of the ThumbSelectorView to a
+/// video preview like an `AVPlayer`.
+public protocol ThumbSelectorViewDelegate: class {
+    func didChangeThumbPosition(_ imageTime: CMTime)
+}
+
+/// A view to select a specific time of an `AVAsset`. It is composed of an asset preview within a scroll view, and a thumb view
+/// to select a precise time of the video. Set the `asset` property to load the video, and use the `selectedTime` property to
+// retrieve the exact frame of the asset that was selected.
+public class ThumbSelectorView: AVAssetTimeSelector {
+
+    public var thumbBorderColor: UIColor = .white {
+        didSet {
+            thumbView.layer.borderColor = thumbBorderColor.cgColor
+        }
+    }
+
+    private let thumbView = UIImageView()
+    private let dimmingView = UIView()
+
+    private var leftThumbConstraint: NSLayoutConstraint?
+    private var currentThumbConstraint: CGFloat = 0
+
+    private var generator: AVAssetImageGenerator?
+
+    public weak var delegate: ThumbSelectorViewDelegate?
+
+    // MARK: - View & constraints configurations
+
+    override func setupSubviews() {
+        super.setupSubviews()
+        setupDimmingView()
+        setupThumbView()
+    }
+
+    private func setupDimmingView() {
+
+        dimmingView.translatesAutoresizingMaskIntoConstraints = false
+        dimmingView.isUserInteractionEnabled = false
+        dimmingView.backgroundColor = UIColor.white.withAlphaComponent(0.7)
+        addSubview(dimmingView)
+        dimmingView.leftAnchor.constraint(equalTo: leftAnchor).isActive = true
+        dimmingView.rightAnchor.constraint(equalTo: rightAnchor).isActive = true
+        dimmingView.topAnchor.constraint(equalTo: topAnchor).isActive = true
+        dimmingView.bottomAnchor.constraint(equalTo: bottomAnchor).isActive = true
+    }
+
+    private func setupThumbView() {
+
+        thumbView.translatesAutoresizingMaskIntoConstraints = false
+        thumbView.layer.borderWidth = 2.0
+        thumbView.layer.borderColor = thumbBorderColor.cgColor
+        thumbView.isUserInteractionEnabled = true
+        thumbView.contentMode = .scaleAspectFill
+        thumbView.clipsToBounds = true
+        addSubview(thumbView)
+
+        leftThumbConstraint = thumbView.leftAnchor.constraint(equalTo: leftAnchor)
+        leftThumbConstraint?.isActive = true
+        thumbView.widthAnchor.constraint(equalTo: thumbView.heightAnchor).isActive = true
+        thumbView.heightAnchor.constraint(equalTo: heightAnchor).isActive = true
+        thumbView.centerYAnchor.constraint(equalTo: centerYAnchor).isActive = true
+
+        let panGestureRecognizer = UIPanGestureRecognizer(target: self, action: #selector(ThumbSelectorView.handlePanGesture(_:)))
+        thumbView.addGestureRecognizer(panGestureRecognizer)
+    }
+
+    // MARK: - Gesture handling
+
+    @objc func handlePanGesture(_ gestureRecognizer: UIPanGestureRecognizer) {
+        guard let superView = gestureRecognizer.view?.superview else { return }
+
+        switch gestureRecognizer.state {
+
+        case .began:
+            currentThumbConstraint = leftThumbConstraint!.constant
+            updateSelectedTime()
+        case .changed:
+
+            let translation = gestureRecognizer.translation(in: superView)
+            updateThumbConstraint(with: translation)
+            layoutIfNeeded()
+            updateSelectedTime()
+
+        case .cancelled, .ended, .failed:
+            updateSelectedTime()
+        default: break
+        }
+    }
+
+    private func updateThumbConstraint(with translation: CGPoint) {
+        let maxConstraint = frame.width - thumbView.frame.width
+        let newConstraint = min(max(0, currentThumbConstraint + translation.x), maxConstraint)
+        leftThumbConstraint?.constant = newConstraint
+    }
+
+    // MARK: - Thumbnail Generation
+
+    override func assetDidChange(newAsset: AVAsset?) {
+        if let asset = newAsset {
+            setupThumbnailGenerator(with: asset)
+            leftThumbConstraint?.constant = 0
+            updateSelectedTime()
+        }
+        super.assetDidChange(newAsset: newAsset)
+    }
+
+    private func setupThumbnailGenerator(with asset: AVAsset) {
+        generator = AVAssetImageGenerator(asset: asset)
+        generator?.appliesPreferredTrackTransform = true
+        generator?.requestedTimeToleranceAfter = CMTime.zero
+        generator?.requestedTimeToleranceBefore = CMTime.zero
+        generator?.maximumSize = getThumbnailFrameSize(from: asset) ?? CGSize.zero
+    }
+
+    private func getThumbnailFrameSize(from asset: AVAsset) -> CGSize? {
+        guard let track = asset.tracks(withMediaType: AVMediaType.video).first else { return nil}
+
+        let assetSize = track.naturalSize.applying(track.preferredTransform)
+
+        let maxDimension = max(assetSize.width, assetSize.height)
+        let minDimension = min(assetSize.width, assetSize.height)
+        let ratio = maxDimension / minDimension
+        let side = thumbView.frame.height * ratio * UIScreen.main.scale
+        return CGSize(width: side, height: side)
+    }
+
+    private func generateThumbnailImage(for time: CMTime) {
+
+        generator?.generateCGImagesAsynchronously(forTimes: [time as NSValue],
+                                                  completionHandler: { (_, image, _, _, _) in
+            guard let image = image else {
+                return
+            }
+            DispatchQueue.main.async {
+                self.generator?.cancelAllCGImageGeneration()
+                let uiimage = UIImage(cgImage: image)
+                self.thumbView.image = uiimage
+            }
+        })
+    }
+
+    // MARK: - Time & Position Equivalence
+
+    override var durationSize: CGFloat {
+        return assetPreview.contentSize.width - thumbView.frame.width
+    }
+
+    /// The currently selected time of the asset.
+    public var selectedTime: CMTime? {
+        let thumbPosition = thumbView.center.x + assetPreview.contentOffset.x - (thumbView.frame.width / 2)
+        return getTime(from: thumbPosition)
+    }
+
+    private func updateSelectedTime() {
+        if let selectedTime = selectedTime {
+            delegate?.didChangeThumbPosition(selectedTime)
+            generateThumbnailImage(for: selectedTime)
+        }
+    }
+
+    // MARK: - UIScrollViewDelegate
+
+    public func scrollViewDidScroll(_ scrollView: UIScrollView) {
+        updateSelectedTime()
+    }
+}

Examples/SimpleVideoAnimation/Pods/PryntTrimmerView/PryntTrimmerView/Classes/Trimmer/HandlerView.swift

@@ -0,0 +1,22 @@
+//
+//  HandlerView.swift
+//  PryntTrimmerView
+//
+//  Created by HHK on 27/03/2017.
+//  Copyright © 2017 Prynt. All rights reserved.
+//
+
+import Foundation
+import UIKit
+
+class HandlerView: UIView {
+
+    override func hitTest(_ point: CGPoint, with event: UIEvent?) -> UIView? {
+        let hitFrame = bounds.insetBy(dx: -20, dy: -20)
+        return hitFrame.contains(point) ? self : nil
+    }
+    override func point(inside point: CGPoint, with event: UIEvent?) -> Bool {
+        let hitFrame = bounds.insetBy(dx: -20, dy: -20)
+        return hitFrame.contains(point)
+    }
+}

Examples/SimpleVideoAnimation/Pods/PryntTrimmerView/PryntTrimmerView/Classes/Trimmer/PryntTrimmerView.swift

@@ -0,0 +1,345 @@
+//
+//  PryntTrimmerView.swift
+//  PryntTrimmerView
+//
+//  Created by HHK on 27/03/2017.
+//  Copyright © 2017 Prynt. All rights reserved.
+//
+
+import AVFoundation
+import UIKit
+
+public protocol TrimmerViewDelegate: class {
+    func didChangePositionBar(_ playerTime: CMTime)
+    func positionBarStoppedMoving(_ playerTime: CMTime)
+}
+
+/// A view to select a specific time range of a video. It consists of an asset preview with thumbnails inside a scroll view, two
+/// handles on the side to select the beginning and the end of the range, and a position bar to synchronize the control with a
+/// video preview, typically with an `AVPlayer`.
+/// Load the video by setting the `asset` property. Access the `startTime` and `endTime` of the view to get the selected time
+// range
+@IBDesignable public class TrimmerView: AVAssetTimeSelector {
+
+    // MARK: - Properties
+
+    // MARK: Color Customization
+
+    /// The color of the main border of the view
+    @IBInspectable public var mainColor: UIColor = UIColor.orange {
+        didSet {
+            updateMainColor()
+        }
+    }
+
+    /// The color of the handles on the side of the view
+    @IBInspectable public var handleColor: UIColor = UIColor.gray {
+        didSet {
+           updateHandleColor()
+        }
+    }
+
+    /// The color of the position indicator
+    @IBInspectable public var positionBarColor: UIColor = UIColor.white {
+        didSet {
+            positionBar.backgroundColor = positionBarColor
+        }
+    }
+
+    // MARK: Interface
+
+    public weak var delegate: TrimmerViewDelegate?
+
+    // MARK: Subviews
+
+    private let trimView = UIView()
+    private let leftHandleView = HandlerView()
+    private let rightHandleView = HandlerView()
+    private let positionBar = UIView()
+    private let leftHandleKnob = UIView()
+    private let rightHandleKnob = UIView()
+    private let leftMaskView = UIView()
+    private let rightMaskView = UIView()
+
+    // MARK: Constraints
+
+    private var currentLeftConstraint: CGFloat = 0
+    private var currentRightConstraint: CGFloat = 0
+    private var leftConstraint: NSLayoutConstraint?
+    private var rightConstraint: NSLayoutConstraint?
+    private var positionConstraint: NSLayoutConstraint?
+
+    private let handleWidth: CGFloat = 15
+
+    /// The maximum duration allowed for the trimming. Change it before setting the asset, as the asset preview
+    public var maxDuration: Double = 15 {
+        didSet {
+            assetPreview.maxDuration = maxDuration
+        }
+    }
+
+    /// The minimum duration allowed for the trimming. The handles won't pan further if the minimum duration is attained.
+    public var minDuration: Double = 3
+
+    // MARK: - View & constraints configurations
+
+    override func setupSubviews() {
+
+        super.setupSubviews()
+        backgroundColor = UIColor.clear
+        layer.zPosition = 1
+        setupTrimmerView()
+        setupHandleView()
+        setupMaskView()
+        setupPositionBar()
+        setupGestures()
+        updateMainColor()
+        updateHandleColor()
+    }
+
+    override func constrainAssetPreview() {
+        assetPreview.leftAnchor.constraint(equalTo: leftAnchor, constant: handleWidth).isActive = true
+        assetPreview.rightAnchor.constraint(equalTo: rightAnchor, constant: -handleWidth).isActive = true
+        assetPreview.topAnchor.constraint(equalTo: topAnchor).isActive = true
+        assetPreview.bottomAnchor.constraint(equalTo: bottomAnchor).isActive = true
+    }
+
+    private func setupTrimmerView() {
+
+        trimView.layer.borderWidth = 2.0
+        trimView.layer.cornerRadius = 2.0
+        trimView.translatesAutoresizingMaskIntoConstraints = false
+        trimView.isUserInteractionEnabled = false
+        addSubview(trimView)
+
+        trimView.topAnchor.constraint(equalTo: topAnchor).isActive = true
+        trimView.bottomAnchor.constraint(equalTo: bottomAnchor).isActive = true
+        leftConstraint = trimView.leftAnchor.constraint(equalTo: leftAnchor)
+        rightConstraint = trimView.rightAnchor.constraint(equalTo: rightAnchor)
+        leftConstraint?.isActive = true
+        rightConstraint?.isActive = true
+    }
+
+    private func setupHandleView() {
+
+        leftHandleView.isUserInteractionEnabled = true
+        leftHandleView.layer.cornerRadius = 2.0
+        leftHandleView.translatesAutoresizingMaskIntoConstraints = false
+        addSubview(leftHandleView)
+
+        leftHandleView.heightAnchor.constraint(equalTo: heightAnchor).isActive = true
+        leftHandleView.widthAnchor.constraint(equalToConstant: handleWidth).isActive = true
+        leftHandleView.leftAnchor.constraint(equalTo: trimView.leftAnchor).isActive = true
+        leftHandleView.centerYAnchor.constraint(equalTo: centerYAnchor).isActive = true
+
+        leftHandleKnob.translatesAutoresizingMaskIntoConstraints = false
+        leftHandleView.addSubview(leftHandleKnob)
+
+        leftHandleKnob.heightAnchor.constraint(equalTo: heightAnchor, multiplier: 0.5).isActive = true
+        leftHandleKnob.widthAnchor.constraint(equalToConstant: 2).isActive = true
+        leftHandleKnob.centerYAnchor.constraint(equalTo: leftHandleView.centerYAnchor).isActive = true
+        leftHandleKnob.centerXAnchor.constraint(equalTo: leftHandleView.centerXAnchor).isActive = true
+
+        rightHandleView.isUserInteractionEnabled = true
+        rightHandleView.layer.cornerRadius = 2.0
+        rightHandleView.translatesAutoresizingMaskIntoConstraints = false
+        addSubview(rightHandleView)
+
+        rightHandleView.heightAnchor.constraint(equalTo: heightAnchor).isActive = true
+        rightHandleView.widthAnchor.constraint(equalToConstant: handleWidth).isActive = true
+        rightHandleView.rightAnchor.constraint(equalTo: trimView.rightAnchor).isActive = true
+        rightHandleView.centerYAnchor.constraint(equalTo: centerYAnchor).isActive = true
+
+        rightHandleKnob.translatesAutoresizingMaskIntoConstraints = false
+        rightHandleView.addSubview(rightHandleKnob)
+
+        rightHandleKnob.heightAnchor.constraint(equalTo: heightAnchor, multiplier: 0.5).isActive = true
+        rightHandleKnob.widthAnchor.constraint(equalToConstant: 2).isActive = true
+        rightHandleKnob.centerYAnchor.constraint(equalTo: rightHandleView.centerYAnchor).isActive = true
+        rightHandleKnob.centerXAnchor.constraint(equalTo: rightHandleView.centerXAnchor).isActive = true
+    }
+
+    private func setupMaskView() {
+
+        leftMaskView.isUserInteractionEnabled = false
+        leftMaskView.backgroundColor = .white
+        leftMaskView.alpha = 0.7
+        leftMaskView.translatesAutoresizingMaskIntoConstraints = false
+        insertSubview(leftMaskView, belowSubview: leftHandleView)
+
+        leftMaskView.leftAnchor.constraint(equalTo: leftAnchor).isActive = true
+        leftMaskView.bottomAnchor.constraint(equalTo: bottomAnchor).isActive = true
+        leftMaskView.topAnchor.constraint(equalTo: topAnchor).isActive = true
+        leftMaskView.rightAnchor.constraint(equalTo: leftHandleView.centerXAnchor).isActive = true
+
+        rightMaskView.isUserInteractionEnabled = false
+        rightMaskView.backgroundColor = .white
+        rightMaskView.alpha = 0.7
+        rightMaskView.translatesAutoresizingMaskIntoConstraints = false
+        insertSubview(rightMaskView, belowSubview: rightHandleView)
+
+        rightMaskView.rightAnchor.constraint(equalTo: rightAnchor).isActive = true
+        rightMaskView.bottomAnchor.constraint(equalTo: bottomAnchor).isActive = true
+        rightMaskView.topAnchor.constraint(equalTo: topAnchor).isActive = true
+        rightMaskView.leftAnchor.constraint(equalTo: rightHandleView.centerXAnchor).isActive = true
+    }
+
+    private func setupPositionBar() {
+
+        positionBar.frame = CGRect(x: 0, y: 0, width: 3, height: frame.height)
+        positionBar.backgroundColor = positionBarColor
+        positionBar.center = CGPoint(x: leftHandleView.frame.maxX, y: center.y)
+        positionBar.layer.cornerRadius = 1
+        positionBar.translatesAutoresizingMaskIntoConstraints = false
+        positionBar.isUserInteractionEnabled = false
+        addSubview(positionBar)
+
+        positionBar.centerYAnchor.constraint(equalTo: centerYAnchor).isActive = true
+        positionBar.widthAnchor.constraint(equalToConstant: 3).isActive = true
+        positionBar.heightAnchor.constraint(equalTo: heightAnchor).isActive = true
+        positionConstraint = positionBar.leftAnchor.constraint(equalTo: leftHandleView.rightAnchor, constant: 0)
+        positionConstraint?.isActive = true
+    }
+
+    private func setupGestures() {
+
+        let leftPanGestureRecognizer = UIPanGestureRecognizer(target: self, action: #selector(TrimmerView.handlePanGesture))
+        leftHandleView.addGestureRecognizer(leftPanGestureRecognizer)
+        let rightPanGestureRecognizer = UIPanGestureRecognizer(target: self, action: #selector(TrimmerView.handlePanGesture))
+        rightHandleView.addGestureRecognizer(rightPanGestureRecognizer)
+    }
+
+    private func updateMainColor() {
+        trimView.layer.borderColor = mainColor.cgColor
+        leftHandleView.backgroundColor = mainColor
+        rightHandleView.backgroundColor = mainColor
+    }
+
+    private func updateHandleColor() {
+        leftHandleKnob.backgroundColor = handleColor
+        rightHandleKnob.backgroundColor = handleColor
+    }
+
+    // MARK: - Trim Gestures
+
+    @objc func handlePanGesture(_ gestureRecognizer: UIPanGestureRecognizer) {
+        guard let view = gestureRecognizer.view, let superView = gestureRecognizer.view?.superview else { return }
+        let isLeftGesture = view == leftHandleView
+        switch gestureRecognizer.state {
+
+        case .began:
+            if isLeftGesture {
+                currentLeftConstraint = leftConstraint!.constant
+            } else {
+                currentRightConstraint = rightConstraint!.constant
+            }
+            updateSelectedTime(stoppedMoving: false)
+        case .changed:
+            let translation = gestureRecognizer.translation(in: superView)
+            if isLeftGesture {
+                updateLeftConstraint(with: translation)
+            } else {
+                updateRightConstraint(with: translation)
+            }
+            layoutIfNeeded()
+            if let startTime = startTime, isLeftGesture {
+                seek(to: startTime)
+            } else if let endTime = endTime {
+                seek(to: endTime)
+            }
+            updateSelectedTime(stoppedMoving: false)
+
+        case .cancelled, .ended, .failed:
+            updateSelectedTime(stoppedMoving: true)
+        default: break
+        }
+    }
+
+    private func updateLeftConstraint(with translation: CGPoint) {
+        let maxConstraint = max(rightHandleView.frame.origin.x - handleWidth - minimumDistanceBetweenHandle, 0)
+        let newConstraint = min(max(0, currentLeftConstraint + translation.x), maxConstraint)
+        leftConstraint?.constant = newConstraint
+    }
+
+    private func updateRightConstraint(with translation: CGPoint) {
+        let maxConstraint = min(2 * handleWidth - frame.width + leftHandleView.frame.origin.x + minimumDistanceBetweenHandle, 0)
+        let newConstraint = max(min(0, currentRightConstraint + translation.x), maxConstraint)
+        rightConstraint?.constant = newConstraint
+    }
+
+    // MARK: - Asset loading
+
+    override func assetDidChange(newAsset: AVAsset?) {
+        super.assetDidChange(newAsset: newAsset)
+        resetHandleViewPosition()
+    }
+
+    private func resetHandleViewPosition() {
+        leftConstraint?.constant = 0
+        rightConstraint?.constant = 0
+        layoutIfNeeded()
+    }
+
+    // MARK: - Time Equivalence
+
+    /// Move the position bar to the given time.
+    public func seek(to time: CMTime) {
+        if let newPosition = getPosition(from: time) {
+
+            let offsetPosition = newPosition - assetPreview.contentOffset.x - leftHandleView.frame.origin.x
+            let maxPosition = rightHandleView.frame.origin.x - (leftHandleView.frame.origin.x + handleWidth)
+                              - positionBar.frame.width
+            let normalizedPosition = min(max(0, offsetPosition), maxPosition)
+            positionConstraint?.constant = normalizedPosition
+            layoutIfNeeded()
+        }
+    }
+
+    /// The selected start time for the current asset.
+    public var startTime: CMTime? {
+        let startPosition = leftHandleView.frame.origin.x + assetPreview.contentOffset.x
+        return getTime(from: startPosition)
+    }
+
+    /// The selected end time for the current asset.
+    public var endTime: CMTime? {
+        let endPosition = rightHandleView.frame.origin.x + assetPreview.contentOffset.x - handleWidth
+        return getTime(from: endPosition)
+    }
+
+    private func updateSelectedTime(stoppedMoving: Bool) {
+        guard let playerTime = positionBarTime else {
+            return
+        }
+        if stoppedMoving {
+            delegate?.positionBarStoppedMoving(playerTime)
+        } else {
+            delegate?.didChangePositionBar(playerTime)
+        }
+    }
+
+    private var positionBarTime: CMTime? {
+        let barPosition = positionBar.frame.origin.x + assetPreview.contentOffset.x - handleWidth
+        return getTime(from: barPosition)
+    }
+
+    private var minimumDistanceBetweenHandle: CGFloat {
+        guard let asset = asset else { return 0 }
+        return CGFloat(minDuration) * assetPreview.contentView.frame.width / CGFloat(asset.duration.seconds)
+    }
+
+    // MARK: - Scroll View Delegate
+
+    public func scrollViewDidEndDecelerating(_ scrollView: UIScrollView) {
+        updateSelectedTime(stoppedMoving: true)
+    }
+
+    public func scrollViewDidEndDragging(_ scrollView: UIScrollView, willDecelerate decelerate: Bool) {
+        if !decelerate {
+            updateSelectedTime(stoppedMoving: true)
+        }
+    }
+    public func scrollViewDidScroll(_ scrollView: UIScrollView) {
+        updateSelectedTime(stoppedMoving: false)
+    }
+}

Examples/SimpleVideoAnimation/Pods/PryntTrimmerView/README.md

@@ -0,0 +1,88 @@
+# PryntTrimmerView
+
+[![codebeat badge](https://codebeat.co/badges/ac008534-7f30-4b04-8434-0c6d69251e4b)](https://codebeat.co/projects/github-com-prynt-prynttrimmerview-master)
+[![Platform](https://img.shields.io/cocoapods/p/PryntTrimmerView.svg?style=flat)](http://cocoapods.org/pods/PryntTrimmerView)
+[![License](https://img.shields.io/cocoapods/l/PryntTrimmerView.svg?style=flat)](http://cocoapods.org/pods/PryntTrimmerView)
+[![Version](https://img.shields.io/cocoapods/v/PryntTrimmerView.svg?style=flat)](http://cocoapods.org/pods/PryntTrimmerView)
+[![Carthage compatible](https://img.shields.io/badge/Carthage-compatible-4BC51D.svg?style=flat)](https://github.com/Carthage/Carthage)
+
+A set of tools written in swift to crop and trim videos.
+
+
+## Example
+
+To run the example project, clone the repo, and run `pod install` from the Example directory first.
+
+### Trimming
+
+![](https://media.giphy.com/media/GwZGkLiKxZcTm/giphy.gif)
+
+### Cropping
+
+![](https://media.giphy.com/media/10FsDfHS7616XC/giphy.gif)
+
+## Requirements
+
+PryntTrimmerView requires iOS9: It uses Layout Anchors to define the constraints.
+
+## Installation
+
+#### CocoaPods
+
+PryntTrimmerView is available through [CocoaPods](http://cocoapods.org). To install
+it, simply add the following line to your Podfile:
+
+```ruby
+pod "PryntTrimmerView"
+```
+
+Then, run `pod install` to download the source and add it to your workspace. 
+
+#### Carthage
+
+PryntTrimmmerView is available through Carthage. To install
+it, simply add the following line to your Cartfile:
+
+```
+github "HHK1/PryntTrimmerView"
+```
+
+Run `carthage update` to build the framework and drag the built PryntTrimmerView.framework into your Xcode project.
+
+#### Swift Version
+
+- Swift 3 compatibility: use version 1.0.1 or below.
+- Swift 4 compatibility: use version 2.x.x.
+- Swift 4.2 compatibility: use version 3.x.x
+
+## Usage
+
+:warning: _This library does not contain an API to crop or trim your video asset. You can find a possible implementation for this in the example pod, but the library only provides the UI._ 
+
+### Trimming
+
+Create a `TrimmerView` instance (in interface builder or through code), and add it to your view hierarchy.
+
+```
+trimmerView.asset = asset
+trimmerView.delegate = self
+```
+
+Access the `startTime` and `endTime` property to know where to trim your asset. You can use the `TrimmerViewDelegate` to link the trimmer with an `AVPlayer` and provide the end user with a preview. See the `VideoTrimmerViewController` inside the project to see an example.
+
+You can also customize the trimmer view by changing its colors:
+```
+trimmerView.handleColor = UIColor.white
+trimmerView.mainColor = UIColor.orange
+trimmerView.positionBarColor = UIColor.white
+```
+
+### Cropping
+
+Create an instance of the `VideoCropView` and add it to your view hierarchy, then load your video into the crop view: `videoCropView.asset = asset`.
+
+You can set the aspect ratio you want using the `setAspectRatio` method. Once you are satisfied with the portion of the asset you want to crop, call `getImageCropFrame` to retrieve the select frame. See the `VideoCropperViewController` in the example app for an actual example of how to crop the video for export.
+
+## License
+
+PryntTrimmerView is available under the MIT license. See the LICENSE file for more info.

Examples/SimpleVideoAnimation/Pods/Target Support Files/Pods-SimpleVideoAnimation/Pods-SimpleVideoAnimation-Info.plist

@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+  <key>CFBundleDevelopmentRegion</key>
+  <string>en</string>
+  <key>CFBundleExecutable</key>
+  <string>${EXECUTABLE_NAME}</string>
+  <key>CFBundleIdentifier</key>
+  <string>${PRODUCT_BUNDLE_IDENTIFIER}</string>
+  <key>CFBundleInfoDictionaryVersion</key>
+  <string>6.0</string>
+  <key>CFBundleName</key>
+  <string>${PRODUCT_NAME}</string>
+  <key>CFBundlePackageType</key>
+  <string>FMWK</string>
+  <key>CFBundleShortVersionString</key>
+  <string>1.0.0</string>
+  <key>CFBundleSignature</key>
+  <string>????</string>
+  <key>CFBundleVersion</key>
+  <string>${CURRENT_PROJECT_VERSION}</string>
+  <key>NSPrincipalClass</key>
+  <string></string>
+</dict>
+</plist>

Examples/SimpleVideoAnimation/Pods/Target Support Files/Pods-SimpleVideoAnimation/Pods-SimpleVideoAnimation-acknowledgements.markdown

@@ -0,0 +1,28 @@
+# Acknowledgements
+This application makes use of the following third party libraries:
+
+## PryntTrimmerView
+
+MIT License
+
+Copyright (c) 2017 Prynt
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+Generated by CocoaPods - https://cocoapods.org

Examples/SimpleVideoAnimation/Pods/Target Support Files/Pods-SimpleVideoAnimation/Pods-SimpleVideoAnimation-acknowledgements.plist

@@ -0,0 +1,60 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>PreferenceSpecifiers</key>
+	<array>
+		<dict>
+			<key>FooterText</key>
+			<string>This application makes use of the following third party libraries:</string>
+			<key>Title</key>
+			<string>Acknowledgements</string>
+			<key>Type</key>
+			<string>PSGroupSpecifier</string>
+		</dict>
+		<dict>
+			<key>FooterText</key>
+			<string>MIT License
+
+Copyright (c) 2017 Prynt
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+</string>
+			<key>License</key>
+			<string>MIT</string>
+			<key>Title</key>
+			<string>PryntTrimmerView</string>
+			<key>Type</key>
+			<string>PSGroupSpecifier</string>
+		</dict>
+		<dict>
+			<key>FooterText</key>
+			<string>Generated by CocoaPods - https://cocoapods.org</string>
+			<key>Title</key>
+			<string></string>
+			<key>Type</key>
+			<string>PSGroupSpecifier</string>
+		</dict>
+	</array>
+	<key>StringsTable</key>
+	<string>Acknowledgements</string>
+	<key>Title</key>
+	<string>Acknowledgements</string>
+</dict>
+</plist>

Examples/SimpleVideoAnimation/Pods/Target Support Files/Pods-SimpleVideoAnimation/Pods-SimpleVideoAnimation-dummy.m

@@ -0,0 +1,5 @@
+#import <Foundation/Foundation.h>
+@interface PodsDummy_Pods_SimpleVideoAnimation : NSObject
+@end
+@implementation PodsDummy_Pods_SimpleVideoAnimation
+@end

Examples/SimpleVideoAnimation/Pods/Target Support Files/Pods-SimpleVideoAnimation/Pods-SimpleVideoAnimation-frameworks-Debug-input-files.xcfilelist

@@ -0,0 +1,2 @@
+${PODS_ROOT}/Target Support Files/Pods-SimpleVideoAnimation/Pods-SimpleVideoAnimation-frameworks.sh
+${BUILT_PRODUCTS_DIR}/PryntTrimmerView/PryntTrimmerView.framework

Examples/SimpleVideoAnimation/Pods/Target Support Files/Pods-SimpleVideoAnimation/Pods-SimpleVideoAnimation-frameworks-Debug-output-files.xcfilelist

@@ -0,0 +1 @@
+${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/PryntTrimmerView.framework

Examples/SimpleVideoAnimation/Pods/Target Support Files/Pods-SimpleVideoAnimation/Pods-SimpleVideoAnimation-frameworks-Release-input-files.xcfilelist

@@ -0,0 +1,2 @@
+${PODS_ROOT}/Target Support Files/Pods-SimpleVideoAnimation/Pods-SimpleVideoAnimation-frameworks.sh
+${BUILT_PRODUCTS_DIR}/PryntTrimmerView/PryntTrimmerView.framework

Examples/SimpleVideoAnimation/Pods/Target Support Files/Pods-SimpleVideoAnimation/Pods-SimpleVideoAnimation-frameworks-Release-output-files.xcfilelist

@@ -0,0 +1 @@
+${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/PryntTrimmerView.framework

Examples/SimpleVideoAnimation/Pods/Target Support Files/Pods-SimpleVideoAnimation/Pods-SimpleVideoAnimation-frameworks.sh

@@ -0,0 +1,171 @@
+#!/bin/sh
+set -e
+set -u
+set -o pipefail
+
+function on_error {
+  echo "$(realpath -mq "${0}"):$1: error: Unexpected failure"
+}
+trap 'on_error $LINENO' ERR
+
+if [ -z ${FRAMEWORKS_FOLDER_PATH+x} ]; then
+  # If FRAMEWORKS_FOLDER_PATH is not set, then there's nowhere for us to copy
+  # frameworks to, so exit 0 (signalling the script phase was successful).
+  exit 0
+fi
+
+echo "mkdir -p ${CONFIGURATION_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}"
+mkdir -p "${CONFIGURATION_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}"
+
+COCOAPODS_PARALLEL_CODE_SIGN="${COCOAPODS_PARALLEL_CODE_SIGN:-false}"
+SWIFT_STDLIB_PATH="${DT_TOOLCHAIN_DIR}/usr/lib/swift/${PLATFORM_NAME}"
+
+# Used as a return value for each invocation of `strip_invalid_archs` function.
+STRIP_BINARY_RETVAL=0
+
+# This protects against multiple targets copying the same framework dependency at the same time. The solution
+# was originally proposed here: https://lists.samba.org/archive/rsync/2008-February/020158.html
+RSYNC_PROTECT_TMP_FILES=(--filter "P .*.??????")
+
+# Copies and strips a vendored framework
+install_framework()
+{
+  if [ -r "${BUILT_PRODUCTS_DIR}/$1" ]; then
+    local source="${BUILT_PRODUCTS_DIR}/$1"
+  elif [ -r "${BUILT_PRODUCTS_DIR}/$(basename "$1")" ]; then
+    local source="${BUILT_PRODUCTS_DIR}/$(basename "$1")"
+  elif [ -r "$1" ]; then
+    local source="$1"
+  fi
+
+  local destination="${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}"
+
+  if [ -L "${source}" ]; then
+    echo "Symlinked..."
+    source="$(readlink "${source}")"
+  fi
+
+  # Use filter instead of exclude so missing patterns don't throw errors.
+  echo "rsync --delete -av "${RSYNC_PROTECT_TMP_FILES[@]}" --filter \"- CVS/\" --filter \"- .svn/\" --filter \"- .git/\" --filter \"- .hg/\" --filter \"- Headers\" --filter \"- PrivateHeaders\" --filter \"- Modules\" \"${source}\" \"${destination}\""
+  rsync --delete -av "${RSYNC_PROTECT_TMP_FILES[@]}" --filter "- CVS/" --filter "- .svn/" --filter "- .git/" --filter "- .hg/" --filter "- Headers" --filter "- PrivateHeaders" --filter "- Modules" "${source}" "${destination}"
+
+  local basename
+  basename="$(basename -s .framework "$1")"
+  binary="${destination}/${basename}.framework/${basename}"
+
+  if ! [ -r "$binary" ]; then
+    binary="${destination}/${basename}"
+  elif [ -L "${binary}" ]; then
+    echo "Destination binary is symlinked..."
+    dirname="$(dirname "${binary}")"
+    binary="${dirname}/$(readlink "${binary}")"
+  fi
+
+  # Strip invalid architectures so "fat" simulator / device frameworks work on device
+  if [[ "$(file "$binary")" == *"dynamically linked shared library"* ]]; then
+    strip_invalid_archs "$binary"
+  fi
+
+  # Resign the code if required by the build settings to avoid unstable apps
+  code_sign_if_enabled "${destination}/$(basename "$1")"
+
+  # Embed linked Swift runtime libraries. No longer necessary as of Xcode 7.
+  if [ "${XCODE_VERSION_MAJOR}" -lt 7 ]; then
+    local swift_runtime_libs
+    swift_runtime_libs=$(xcrun otool -LX "$binary" | grep --color=never @rpath/libswift | sed -E s/@rpath\\/\(.+dylib\).*/\\1/g | uniq -u)
+    for lib in $swift_runtime_libs; do
+      echo "rsync -auv \"${SWIFT_STDLIB_PATH}/${lib}\" \"${destination}\""
+      rsync -auv "${SWIFT_STDLIB_PATH}/${lib}" "${destination}"
+      code_sign_if_enabled "${destination}/${lib}"
+    done
+  fi
+}
+
+# Copies and strips a vendored dSYM
+install_dsym() {
+  local source="$1"
+  if [ -r "$source" ]; then
+    # Copy the dSYM into a the targets temp dir.
+    echo "rsync --delete -av "${RSYNC_PROTECT_TMP_FILES[@]}" --filter \"- CVS/\" --filter \"- .svn/\" --filter \"- .git/\" --filter \"- .hg/\" --filter \"- Headers\" --filter \"- PrivateHeaders\" --filter \"- Modules\" \"${source}\" \"${DERIVED_FILES_DIR}\""
+    rsync --delete -av "${RSYNC_PROTECT_TMP_FILES[@]}" --filter "- CVS/" --filter "- .svn/" --filter "- .git/" --filter "- .hg/" --filter "- Headers" --filter "- PrivateHeaders" --filter "- Modules" "${source}" "${DERIVED_FILES_DIR}"
+
+    local basename
+    basename="$(basename -s .framework.dSYM "$source")"
+    binary="${DERIVED_FILES_DIR}/${basename}.framework.dSYM/Contents/Resources/DWARF/${basename}"
+
+    # Strip invalid architectures so "fat" simulator / device frameworks work on device
+    if [[ "$(file "$binary")" == *"Mach-O "*"dSYM companion"* ]]; then
+      strip_invalid_archs "$binary"
+    fi
+
+    if [[ $STRIP_BINARY_RETVAL == 1 ]]; then
+      # Move the stripped file into its final destination.
+      echo "rsync --delete -av "${RSYNC_PROTECT_TMP_FILES[@]}" --filter \"- CVS/\" --filter \"- .svn/\" --filter \"- .git/\" --filter \"- .hg/\" --filter \"- Headers\" --filter \"- PrivateHeaders\" --filter \"- Modules\" \"${DERIVED_FILES_DIR}/${basename}.framework.dSYM\" \"${DWARF_DSYM_FOLDER_PATH}\""
+      rsync --delete -av "${RSYNC_PROTECT_TMP_FILES[@]}" --filter "- CVS/" --filter "- .svn/" --filter "- .git/" --filter "- .hg/" --filter "- Headers" --filter "- PrivateHeaders" --filter "- Modules" "${DERIVED_FILES_DIR}/${basename}.framework.dSYM" "${DWARF_DSYM_FOLDER_PATH}"
+    else
+      # The dSYM was not stripped at all, in this case touch a fake folder so the input/output paths from Xcode do not reexecute this script because the file is missing.
+      touch "${DWARF_DSYM_FOLDER_PATH}/${basename}.framework.dSYM"
+    fi
+  fi
+}
+
+# Copies the bcsymbolmap files of a vendored framework
+install_bcsymbolmap() {
+    local bcsymbolmap_path="$1"
+    local destination="${BUILT_PRODUCTS_DIR}"
+    echo "rsync --delete -av "${RSYNC_PROTECT_TMP_FILES[@]}" --filter "- CVS/" --filter "- .svn/" --filter "- .git/" --filter "- .hg/" --filter "- Headers" --filter "- PrivateHeaders" --filter "- Modules" "${bcsymbolmap_path}" "${destination}""
+    rsync --delete -av "${RSYNC_PROTECT_TMP_FILES[@]}" --filter "- CVS/" --filter "- .svn/" --filter "- .git/" --filter "- .hg/" --filter "- Headers" --filter "- PrivateHeaders" --filter "- Modules" "${bcsymbolmap_path}" "${destination}"
+}
+
+# Signs a framework with the provided identity
+code_sign_if_enabled() {
+  if [ -n "${EXPANDED_CODE_SIGN_IDENTITY:-}" -a "${CODE_SIGNING_REQUIRED:-}" != "NO" -a "${CODE_SIGNING_ALLOWED}" != "NO" ]; then
+    # Use the current code_sign_identity
+    echo "Code Signing $1 with Identity ${EXPANDED_CODE_SIGN_IDENTITY_NAME}"
+    local code_sign_cmd="/usr/bin/codesign --force --sign ${EXPANDED_CODE_SIGN_IDENTITY} ${OTHER_CODE_SIGN_FLAGS:-} --preserve-metadata=identifier,entitlements '$1'"
+
+    if [ "${COCOAPODS_PARALLEL_CODE_SIGN}" == "true" ]; then
+      code_sign_cmd="$code_sign_cmd &"
+    fi
+    echo "$code_sign_cmd"
+    eval "$code_sign_cmd"
+  fi
+}
+
+# Strip invalid architectures
+strip_invalid_archs() {
+  binary="$1"
+  # Get architectures for current target binary
+  binary_archs="$(lipo -info "$binary" | rev | cut -d ':' -f1 | awk '{$1=$1;print}' | rev)"
+  # Intersect them with the architectures we are building for
+  intersected_archs="$(echo ${ARCHS[@]} ${binary_archs[@]} | tr ' ' '\n' | sort | uniq -d)"
+  # If there are no archs supported by this binary then warn the user
+  if [[ -z "$intersected_archs" ]]; then
+    echo "warning: [CP] Vendored binary '$binary' contains architectures ($binary_archs) none of which match the current build architectures ($ARCHS)."
+    STRIP_BINARY_RETVAL=0
+    return
+  fi
+  stripped=""
+  for arch in $binary_archs; do
+    if ! [[ "${ARCHS}" == *"$arch"* ]]; then
+      # Strip non-valid architectures in-place
+      lipo -remove "$arch" -output "$binary" "$binary"
+      stripped="$stripped $arch"
+    fi
+  done
+  if [[ "$stripped" ]]; then
+    echo "Stripped $binary of architectures:$stripped"
+  fi
+  STRIP_BINARY_RETVAL=1
+}
+
+
+if [[ "$CONFIGURATION" == "Debug" ]]; then
+  install_framework "${BUILT_PRODUCTS_DIR}/PryntTrimmerView/PryntTrimmerView.framework"
+fi
+if [[ "$CONFIGURATION" == "Release" ]]; then
+  install_framework "${BUILT_PRODUCTS_DIR}/PryntTrimmerView/PryntTrimmerView.framework"
+fi
+if [ "${COCOAPODS_PARALLEL_CODE_SIGN}" == "true" ]; then
+  wait
+fi

Examples/SimpleVideoAnimation/Pods/Target Support Files/Pods-SimpleVideoAnimation/Pods-SimpleVideoAnimation-umbrella.h

@@ -0,0 +1,16 @@
+#ifdef __OBJC__
+#import <UIKit/UIKit.h>
+#else
+#ifndef FOUNDATION_EXPORT
+#if defined(__cplusplus)
+#define FOUNDATION_EXPORT extern "C"
+#else
+#define FOUNDATION_EXPORT extern
+#endif
+#endif
+#endif
+
+
+FOUNDATION_EXPORT double Pods_SimpleVideoAnimationVersionNumber;
+FOUNDATION_EXPORT const unsigned char Pods_SimpleVideoAnimationVersionString[];
+

Examples/SimpleVideoAnimation/Pods/Target Support Files/Pods-SimpleVideoAnimation/Pods-SimpleVideoAnimation.debug.xcconfig

@@ -0,0 +1,12 @@
+ALWAYS_EMBED_SWIFT_STANDARD_LIBRARIES = YES
+FRAMEWORK_SEARCH_PATHS = $(inherited) "${PODS_CONFIGURATION_BUILD_DIR}/PryntTrimmerView"
+GCC_PREPROCESSOR_DEFINITIONS = $(inherited) COCOAPODS=1
+HEADER_SEARCH_PATHS = $(inherited) "${PODS_CONFIGURATION_BUILD_DIR}/PryntTrimmerView/PryntTrimmerView.framework/Headers"
+LD_RUNPATH_SEARCH_PATHS = $(inherited) '@executable_path/Frameworks' '@loader_path/Frameworks'
+OTHER_LDFLAGS = $(inherited) -framework "PryntTrimmerView"
+OTHER_SWIFT_FLAGS = $(inherited) -D COCOAPODS
+PODS_BUILD_DIR = ${BUILD_DIR}
+PODS_CONFIGURATION_BUILD_DIR = ${PODS_BUILD_DIR}/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)
+PODS_PODFILE_DIR_PATH = ${SRCROOT}/.
+PODS_ROOT = ${SRCROOT}/Pods
+USE_RECURSIVE_SCRIPT_INPUTS_IN_SCRIPT_PHASES = YES

Examples/SimpleVideoAnimation/Pods/Target Support Files/Pods-SimpleVideoAnimation/Pods-SimpleVideoAnimation.modulemap

@@ -0,0 +1,6 @@
+framework module Pods_SimpleVideoAnimation {
+  umbrella header "Pods-SimpleVideoAnimation-umbrella.h"
+
+  export *
+  module * { export * }
+}

Examples/SimpleVideoAnimation/Pods/Target Support Files/Pods-SimpleVideoAnimation/Pods-SimpleVideoAnimation.release.xcconfig

@@ -0,0 +1,12 @@
+ALWAYS_EMBED_SWIFT_STANDARD_LIBRARIES = YES
+FRAMEWORK_SEARCH_PATHS = $(inherited) "${PODS_CONFIGURATION_BUILD_DIR}/PryntTrimmerView"
+GCC_PREPROCESSOR_DEFINITIONS = $(inherited) COCOAPODS=1
+HEADER_SEARCH_PATHS = $(inherited) "${PODS_CONFIGURATION_BUILD_DIR}/PryntTrimmerView/PryntTrimmerView.framework/Headers"
+LD_RUNPATH_SEARCH_PATHS = $(inherited) '@executable_path/Frameworks' '@loader_path/Frameworks'
+OTHER_LDFLAGS = $(inherited) -framework "PryntTrimmerView"
+OTHER_SWIFT_FLAGS = $(inherited) -D COCOAPODS
+PODS_BUILD_DIR = ${BUILD_DIR}
+PODS_CONFIGURATION_BUILD_DIR = ${PODS_BUILD_DIR}/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)
+PODS_PODFILE_DIR_PATH = ${SRCROOT}/.
+PODS_ROOT = ${SRCROOT}/Pods
+USE_RECURSIVE_SCRIPT_INPUTS_IN_SCRIPT_PHASES = YES

Examples/SimpleVideoAnimation/Pods/Target Support Files/PryntTrimmerView/PryntTrimmerView-Info.plist

@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+  <key>CFBundleDevelopmentRegion</key>
+  <string>en</string>
+  <key>CFBundleExecutable</key>
+  <string>${EXECUTABLE_NAME}</string>
+  <key>CFBundleIdentifier</key>
+  <string>${PRODUCT_BUNDLE_IDENTIFIER}</string>
+  <key>CFBundleInfoDictionaryVersion</key>
+  <string>6.0</string>
+  <key>CFBundleName</key>
+  <string>${PRODUCT_NAME}</string>
+  <key>CFBundlePackageType</key>
+  <string>FMWK</string>
+  <key>CFBundleShortVersionString</key>
+  <string>4.0.0</string>
+  <key>CFBundleSignature</key>
+  <string>????</string>
+  <key>CFBundleVersion</key>
+  <string>${CURRENT_PROJECT_VERSION}</string>
+  <key>NSPrincipalClass</key>
+  <string></string>
+</dict>
+</plist>

Examples/SimpleVideoAnimation/Pods/Target Support Files/PryntTrimmerView/PryntTrimmerView-dummy.m

@@ -0,0 +1,5 @@
+#import <Foundation/Foundation.h>
+@interface PodsDummy_PryntTrimmerView : NSObject
+@end
+@implementation PodsDummy_PryntTrimmerView
+@end

Examples/SimpleVideoAnimation/Pods/Target Support Files/PryntTrimmerView/PryntTrimmerView-prefix.pch

@@ -0,0 +1,12 @@
+#ifdef __OBJC__
+#import <UIKit/UIKit.h>
+#else
+#ifndef FOUNDATION_EXPORT
+#if defined(__cplusplus)
+#define FOUNDATION_EXPORT extern "C"
+#else
+#define FOUNDATION_EXPORT extern
+#endif
+#endif
+#endif
+

Examples/SimpleVideoAnimation/Pods/Target Support Files/PryntTrimmerView/PryntTrimmerView-umbrella.h

@@ -0,0 +1,16 @@
+#ifdef __OBJC__
+#import <UIKit/UIKit.h>
+#else
+#ifndef FOUNDATION_EXPORT
+#if defined(__cplusplus)
+#define FOUNDATION_EXPORT extern "C"
+#else
+#define FOUNDATION_EXPORT extern
+#endif
+#endif
+#endif
+
+
+FOUNDATION_EXPORT double PryntTrimmerViewVersionNumber;
+FOUNDATION_EXPORT const unsigned char PryntTrimmerViewVersionString[];
+

Examples/SimpleVideoAnimation/Pods/Target Support Files/PryntTrimmerView/PryntTrimmerView.modulemap

@@ -0,0 +1,6 @@
+framework module PryntTrimmerView {
+  umbrella header "PryntTrimmerView-umbrella.h"
+
+  export *
+  module * { export * }
+}

Examples/SimpleVideoAnimation/Pods/Target Support Files/PryntTrimmerView/PryntTrimmerView.xcconfig

@@ -0,0 +1,10 @@
+CONFIGURATION_BUILD_DIR = ${PODS_CONFIGURATION_BUILD_DIR}/PryntTrimmerView
+GCC_PREPROCESSOR_DEFINITIONS = $(inherited) COCOAPODS=1
+OTHER_SWIFT_FLAGS = $(inherited) -D COCOAPODS
+PODS_BUILD_DIR = ${BUILD_DIR}
+PODS_CONFIGURATION_BUILD_DIR = ${PODS_BUILD_DIR}/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)
+PODS_ROOT = ${SRCROOT}
+PODS_TARGET_SRCROOT = ${PODS_ROOT}/PryntTrimmerView
+PRODUCT_BUNDLE_IDENTIFIER = org.cocoapods.${PRODUCT_NAME:rfc1034identifier}
+SKIP_INSTALL = YES
+USE_RECURSIVE_SCRIPT_INPUTS_IN_SCRIPT_PHASES = YES

Examples/SimpleVideoAnimation/SimpleVIdeoAnimation.xcodeproj/project.pbxproj

@@ -0,0 +1,481 @@
+// !$*UTF8*$!
+{
+	archiveVersion = 1;
+	classes = {
+	};
+	objectVersion = 51;
+	objects = {
+
+/* Begin PBXBuildFile section */
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+			dstSubfolderSpec = 10;
+			files = (
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+			);
+			name = "Embed Frameworks";
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXCopyFilesBuildPhase section */
+
+/* Begin PBXFileReference section */
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+			files = (
+				6A874BB924C5462C00ADFD8A /* MetalVideoProcess.framework in Frameworks */,
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+}

Examples/SimpleVideoAnimation/SimpleVIdeoAnimation.xcodeproj/project.xcworkspace/contents.xcworkspacedata

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+   version = "1.0">
+   <FileRef
+      location = "self:SimpleVideoAnimation.xcodeproj">
+   </FileRef>
+</Workspace>

Examples/SimpleVideoAnimation/SimpleVIdeoAnimation.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>

Examples/SimpleVideoAnimation/SimpleVIdeoAnimation.xcodeproj/xcshareddata/xcschemes/SimpleVideoAnimation.xcscheme

@@ -0,0 +1,79 @@
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+   version = "1.3">
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+      buildImplicitDependencies = "YES">
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+            buildForRunning = "YES"
+            buildForProfiling = "YES"
+            buildForArchiving = "YES"
+            buildForAnalyzing = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "6A874B9B24C53EF700ADFD8A"
+               BuildableName = "SimpleVideoAnimation.app"
+               BlueprintName = "SimpleVideoAnimation"
+               ReferencedContainer = "container:SimpleVideoAnimation.xcodeproj">
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+   </BuildAction>
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+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      shouldUseLaunchSchemeArgsEnv = "YES">
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Examples/SimpleVideoAnimation/SimpleVIdeoAnimation/AppDelegate.swift

@@ -0,0 +1,37 @@
+//
+//  AppDelegate.swift
+//  SimpleVideoAnimation
+//
+//  Created by RenZhu Macro on 2020/7/20.
+//  Copyright © 2020 RenZhu Macro. All rights reserved.
+//
+
+import UIKit
+
+@UIApplicationMain
+class AppDelegate: UIResponder, UIApplicationDelegate {
+
+
+
+    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
+        // Override point for customization after application launch.
+        return true
+    }
+
+    // MARK: UISceneSession Lifecycle
+
+    func application(_ application: UIApplication, configurationForConnecting connectingSceneSession: UISceneSession, options: UIScene.ConnectionOptions) -> UISceneConfiguration {
+        // Called when a new scene session is being created.
+        // Use this method to select a configuration to create the new scene with.
+        return UISceneConfiguration(name: "Default Configuration", sessionRole: connectingSceneSession.role)
+    }
+
+    func application(_ application: UIApplication, didDiscardSceneSessions sceneSessions: Set<UISceneSession>) {
+        // Called when the user discards a scene session.
+        // If any sessions were discarded while the application was not running, this will be called shortly after application:didFinishLaunchingWithOptions.
+        // Use this method to release any resources that were specific to the discarded scenes, as they will not return.
+    }
+
+
+}
+

Examples/SimpleVideoAnimation/SimpleVIdeoAnimation/Assets.xcassets/AppIcon.appiconset/Contents.json

@@ -0,0 +1,98 @@
+{
+  "images" : [
+    {
+      "idiom" : "iphone",
+      "scale" : "2x",
+      "size" : "20x20"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "3x",
+      "size" : "20x20"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "2x",
+      "size" : "29x29"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "3x",
+      "size" : "29x29"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "2x",
+      "size" : "40x40"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "3x",
+      "size" : "40x40"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "2x",
+      "size" : "60x60"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "3x",
+      "size" : "60x60"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "1x",
+      "size" : "20x20"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "2x",
+      "size" : "20x20"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "1x",
+      "size" : "29x29"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "2x",
+      "size" : "29x29"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "1x",
+      "size" : "40x40"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "2x",
+      "size" : "40x40"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "1x",
+      "size" : "76x76"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "2x",
+      "size" : "76x76"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "2x",
+      "size" : "83.5x83.5"
+    },
+    {
+      "idiom" : "ios-marketing",
+      "scale" : "1x",
+      "size" : "1024x1024"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

Examples/SimpleVideoAnimation/SimpleVIdeoAnimation/Assets.xcassets/Contents.json

@@ -0,0 +1,6 @@
+{
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

Examples/SimpleVideoAnimation/SimpleVIdeoAnimation/Base.lproj/LaunchScreen.storyboard

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="13122.16" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="01J-lp-oVM">
+    <dependencies>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="13104.12"/>
+        <capability name="Safe area layout guides" minToolsVersion="9.0"/>
+        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
+    </dependencies>
+    <scenes>
+        <!--View Controller-->
+        <scene sceneID="EHf-IW-A2E">
+            <objects>
+                <viewController id="01J-lp-oVM" sceneMemberID="viewController">
+                    <view key="view" contentMode="scaleToFill" id="Ze5-6b-2t3">
+                        <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <color key="backgroundColor" xcode11CocoaTouchSystemColor="systemBackgroundColor" cocoaTouchSystemColor="whiteColor"/>
+                        <viewLayoutGuide key="safeArea" id="6Tk-OE-BBY"/>
+                    </view>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="iYj-Kq-Ea1" userLabel="First Responder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="53" y="375"/>
+        </scene>
+    </scenes>
+</document>

Examples/SimpleVideoAnimation/SimpleVIdeoAnimation/Base.lproj/Main.storyboard

@@ -0,0 +1,94 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="17132" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="Sjl-30-bHq">
+    <device id="retina4_7" orientation="portrait" appearance="light"/>
+    <dependencies>
+        <deployment identifier="iOS"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="17105.1"/>
+        <capability name="Safe area layout guides" minToolsVersion="9.0"/>
+        <capability name="System colors in document resources" minToolsVersion="11.0"/>
+        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
+    </dependencies>
+    <scenes>
+        <!--View Controller-->
+        <scene sceneID="tne-QT-ifu">
+            <objects>
+                <viewController storyboardIdentifier="ViewController" id="BYZ-38-t0r" customClass="ViewController" customModule="SimpleVideoAnimation" customModuleProvider="target" sceneMemberID="viewController">
+                    <view key="view" contentMode="scaleToFill" id="8bC-Xf-vdC">
+                        <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <subviews>
+                            <view contentMode="scaleToFill" misplaced="YES" translatesAutoresizingMaskIntoConstraints="NO" id="FXj-LY-59h" customClass="MetalVideoProcessRenderView" customModule="MetalVideoProcess">
+                                <rect key="frame" x="0.0" y="0.0" width="375" height="438"/>
+                                <color key="backgroundColor" systemColor="systemBackgroundColor"/>
+                                <constraints>
+                                    <constraint firstAttribute="width" secondItem="FXj-LY-59h" secondAttribute="height" id="iBP-Gu-Wj9"/>
+                                </constraints>
+                            </view>
+                            <button opaque="NO" contentMode="scaleToFill" misplaced="YES" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="system" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="gLe-Zn-niL">
+                                <rect key="frame" x="231" y="562" width="42" height="30"/>
+                                <state key="normal" title="Pause"/>
+                                <connections>
+                                    <action selector="pause:" destination="BYZ-38-t0r" eventType="touchUpInside" id="jXA-Ko-2E5"/>
+                                </connections>
+                            </button>
+                            <button opaque="NO" contentMode="scaleToFill" misplaced="YES" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="system" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="9lP-KN-D4J">
+                                <rect key="frame" x="136" y="562" width="30" height="30"/>
+                                <state key="normal" title="Play"/>
+                                <connections>
+                                    <action selector="play:" destination="BYZ-38-t0r" eventType="touchUpInside" id="BxN-gS-f9o"/>
+                                </connections>
+                            </button>
+                            <view contentMode="scaleToFill" misplaced="YES" translatesAutoresizingMaskIntoConstraints="NO" id="JkB-hg-7A6" customClass="TrimmerView" customModule="PryntTrimmerView">
+                                <rect key="frame" x="0.0" y="470" width="375" height="80"/>
+                                <color key="backgroundColor" systemColor="systemBackgroundColor"/>
+                                <constraints>
+                                    <constraint firstAttribute="height" constant="80" id="9zr-ar-gfx"/>
+                                </constraints>
+                            </view>
+                        </subviews>
+                        <viewLayoutGuide key="safeArea" id="6Tk-OE-BBY"/>
+                        <color key="backgroundColor" systemColor="systemBackgroundColor"/>
+                        <constraints>
+                            <constraint firstItem="9lP-KN-D4J" firstAttribute="top" secondItem="JkB-hg-7A6" secondAttribute="bottom" constant="10" id="EVm-H0-xCG"/>
+                            <constraint firstItem="FXj-LY-59h" firstAttribute="top" secondItem="6Tk-OE-BBY" secondAttribute="top" id="Hbb-9e-X3i"/>
+                            <constraint firstItem="gLe-Zn-niL" firstAttribute="top" secondItem="9lP-KN-D4J" secondAttribute="bottom" constant="10" id="RPS-Ea-blL"/>
+                            <constraint firstItem="6Tk-OE-BBY" firstAttribute="trailing" secondItem="JkB-hg-7A6" secondAttribute="trailing" id="SQ5-rc-Ie3"/>
+                            <constraint firstItem="9lP-KN-D4J" firstAttribute="centerX" secondItem="8bC-Xf-vdC" secondAttribute="centerX" id="T7k-7C-oA5"/>
+                            <constraint firstItem="gLe-Zn-niL" firstAttribute="centerX" secondItem="8bC-Xf-vdC" secondAttribute="centerX" id="Z0h-3k-NiZ"/>
+                            <constraint firstItem="JkB-hg-7A6" firstAttribute="leading" secondItem="6Tk-OE-BBY" secondAttribute="leading" id="bea-xO-Fs7"/>
+                            <constraint firstItem="FXj-LY-59h" firstAttribute="leading" secondItem="6Tk-OE-BBY" secondAttribute="leading" id="cew-hA-jt7"/>
+                            <constraint firstItem="JkB-hg-7A6" firstAttribute="top" secondItem="FXj-LY-59h" secondAttribute="bottom" constant="10" id="rCV-zQ-Eyi"/>
+                            <constraint firstItem="6Tk-OE-BBY" firstAttribute="trailing" secondItem="FXj-LY-59h" secondAttribute="trailing" id="rUK-5t-TAP"/>
+                        </constraints>
+                    </view>
+                    <connections>
+                        <outlet property="progressView" destination="JkB-hg-7A6" id="eky-zy-L0Z"/>
+                        <outlet property="renderView" destination="FXj-LY-59h" id="8pT-q1-cV2"/>
+                    </connections>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="dkx-z0-nzr" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="132" y="137.18140929535232"/>
+        </scene>
+        <!--NavigateView-->
+        <scene sceneID="XBJ-QK-b6X">
+            <objects>
+                <viewController id="Sjl-30-bHq" userLabel="NavigateView" customClass="NavigateViewController" customModule="SimpleVideoAnimation" customModuleProvider="target" sceneMemberID="viewController">
+                    <view key="view" contentMode="scaleToFill" id="aeg-zc-cBS">
+                        <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <viewLayoutGuide key="safeArea" id="qlq-zn-i27"/>
+                        <color key="backgroundColor" systemColor="systemBackgroundColor"/>
+                    </view>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="Aj9-BM-fNL" userLabel="First Responder" customClass="UIResponder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="-906" y="137"/>
+        </scene>
+    </scenes>
+    <resources>
+        <systemColor name="systemBackgroundColor">
+            <color white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+        </systemColor>
+    </resources>
+</document>

Examples/SimpleVideoAnimation/SimpleVIdeoAnimation/Info.plist

@@ -0,0 +1,64 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>$(DEVELOPMENT_LANGUAGE)</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>$(PRODUCT_NAME)</string>
+	<key>CFBundlePackageType</key>
+	<string>$(PRODUCT_BUNDLE_PACKAGE_TYPE)</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleVersion</key>
+	<string>1</string>
+	<key>LSRequiresIPhoneOS</key>
+	<true/>
+	<key>UIApplicationSceneManifest</key>
+	<dict>
+		<key>UIApplicationSupportsMultipleScenes</key>
+		<false/>
+		<key>UISceneConfigurations</key>
+		<dict>
+			<key>UIWindowSceneSessionRoleApplication</key>
+			<array>
+				<dict>
+					<key>UISceneConfigurationName</key>
+					<string>Default Configuration</string>
+					<key>UISceneDelegateClassName</key>
+					<string>$(PRODUCT_MODULE_NAME).SceneDelegate</string>
+					<key>UISceneStoryboardFile</key>
+					<string>Main</string>
+				</dict>
+			</array>
+		</dict>
+	</dict>
+	<key>UILaunchStoryboardName</key>
+	<string>LaunchScreen</string>
+	<key>UIMainStoryboardFile</key>
+	<string>Main</string>
+	<key>UIRequiredDeviceCapabilities</key>
+	<array>
+		<string>armv7</string>
+	</array>
+	<key>UISupportedInterfaceOrientations</key>
+	<array>
+		<string>UIInterfaceOrientationPortrait</string>
+		<string>UIInterfaceOrientationLandscapeLeft</string>
+		<string>UIInterfaceOrientationLandscapeRight</string>
+	</array>
+	<key>UISupportedInterfaceOrientations~ipad</key>
+	<array>
+		<string>UIInterfaceOrientationPortrait</string>
+		<string>UIInterfaceOrientationPortraitUpsideDown</string>
+		<string>UIInterfaceOrientationLandscapeLeft</string>
+		<string>UIInterfaceOrientationLandscapeRight</string>
+	</array>
+</dict>
+</plist>

Examples/SimpleVideoAnimation/SimpleVIdeoAnimation/NavigateViewController.swift

@@ -0,0 +1,110 @@
+//
+//  NavigateViewController.swift
+//  SimpleVideoTransition
+//
+//  Created by Ruanshengqiang Macro on 2020/7/2.
+//  Copyright © 2020 Ruanshengqiang Macro. All rights reserved.
+//
+
+import UIKit
+import MetalVideoProcess
+import AVFoundation
+import MetalVideoProcess
+
+class NavigateViewController: UIViewController {
+    @IBOutlet weak var naviStackView: UIStackView!
+
+    var transitionTimeRange = CMTimeRange.init()
+    
+    let N = 19
+    private func getTransition(index: Int) -> (titleName: String, transObject: MetalVideoProcessMotion) {
+        switch index {
+        case 0:
+            return (titleName: "渐显", transObject: MetalVideoProcessFadeInMotion())
+        case 1:
+            return (titleName: "轻微放大", transObject: MetalVideoProcessSlimZoomInMotion())
+        case 2:
+            return (titleName: "放大", transObject: MetalVideoProcessZoomInMotion())
+        case 3:
+            return (titleName: "缩小", transObject: MetalVideoProcessZoomOutMotion())
+        case 4:
+            return (titleName: "向左滑入", transObject: MetalVideoProcessMoveLeftMotion())
+        case 5:
+            return (titleName: "向右滑入", transObject: MetalVideoProcessMoveRightMotion())
+        case 6:
+            return (titleName: "向下滑动", transObject: MetalVideoProcessMoveDownMotion())
+        case 7:
+            return (titleName: "向上滑动", transObject: MetalVideoProcessMoveUpMotion())
+        case 8:
+            return (titleName: "旋转", transObject: MetalVideoProcessRotateMotion())
+        case 9:
+            return (titleName: "涡旋旋转", transObject: MetalVideoProcessSwirlMotion())
+        case 10:
+            return (titleName: "镜像旋转", transObject: MetalVideoProcessMirrorRotateMotion())
+        case 11:
+            return (titleName: "向上旋入", transObject: MetalVideoProcessUpMoveInBlurMotion())
+        case 12:
+            return (titleName: "向上旋入II", transObject: MetalVideoProcessUpMoveInBlurIIMotion())
+        case 13:
+            return (titleName: "雨刷", transObject: MetalVideoProcessWiperMotion())
+        case 14:
+            return (titleName: "摆钟", transObject: MetalVideoProcessPendulumMotion())
+        case 15:
+            return (titleName: "向右甩入", transObject: MetalVideoProcessRightDropMotion())
+        case 16:
+            return (titleName: "向下甩入", transObject: MetalVideoProcessUpDropMotion())
+        case 17:
+            return (titleName: "动感放大", transObject: MetalVideoProcessZoomInBlurMotion())
+        case 18:
+            return (titleName: "动感缩小", transObject: MetalVideoProcessZoomOutBlurMotion())
+            /*
+        case 15:
+            return (titleName: "向右转入", transObject: MetalVideoProcessRotateInRightMotion())
+        
+         */
+        default:
+            return (titleName: "放大", transObject: MetalVideoProcessMoveUpMotion())
+ 
+        }
+    }
+    private func getButton(index: Int) -> UIButton {
+        let splitNum = 5.0
+        let pieceWidth = Double(self.view.frame.width) / splitNum
+        let buttonWidth = pieceWidth * 0.8
+        let dIndex = Double(index)
+        let indexX = fmod(dIndex, splitNum) * pieceWidth
+        let indexY = (floor(dIndex / splitNum)) * pieceWidth + 100.0
+        
+        let buttonFrame = CGRect(x: indexX, y: indexY, width: buttonWidth, height: buttonWidth)
+        
+        let but = UIButton(frame: buttonFrame)
+        but.backgroundColor = UIColor(red: 0.3, green: 0.4, blue: 0.3, alpha: 0.7)
+        but.setTitle(getTransition(index: index).titleName, for: .normal)
+       
+        but.titleLabel?.adjustsFontSizeToFitWidth = true
+        but.addTarget(self, action: #selector(self.swithController(_:)), for: .touchUpInside)
+        
+        but.tag = index
+        return but
+    }
+    
+    override func viewDidLoad() {
+        super.viewDidLoad()
+        for index in 0...N - 1 {
+            self.view.addSubview(getButton(index: index))
+        }
+    }
+    
+    @IBAction func swithController(_ sender: UIButton) {
+        
+        let viewController = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "ViewController")  as! ViewController
+        
+        let trans = getTransition(index: sender.tag)
+        
+        viewController.motionIn = trans.transObject
+        
+        self.present(viewController, animated: true, completion: nil)
+    }
+}
+
+

Examples/SimpleVideoAnimation/SimpleVIdeoAnimation/SceneDelegate.swift

@@ -0,0 +1,53 @@
+//
+//  SceneDelegate.swift
+//  SimpleVideoAnimation
+//
+//  Created by RenZhu Macro on 2020/7/20.
+//  Copyright © 2020 RenZhu Macro. All rights reserved.
+//
+
+import UIKit
+
+class SceneDelegate: UIResponder, UIWindowSceneDelegate {
+
+    var window: UIWindow?
+
+
+    func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
+        // Use this method to optionally configure and attach the UIWindow `window` to the provided UIWindowScene `scene`.
+        // If using a storyboard, the `window` property will automatically be initialized and attached to the scene.
+        // This delegate does not imply the connecting scene or session are new (see `application:configurationForConnectingSceneSession` instead).
+        guard let _ = (scene as? UIWindowScene) else { return }
+    }
+
+    func sceneDidDisconnect(_ scene: UIScene) {
+        // Called as the scene is being released by the system.
+        // This occurs shortly after the scene enters the background, or when its session is discarded.
+        // Release any resources associated with this scene that can be re-created the next time the scene connects.
+        // The scene may re-connect later, as its session was not neccessarily discarded (see `application:didDiscardSceneSessions` instead).
+    }
+
+    func sceneDidBecomeActive(_ scene: UIScene) {
+        // Called when the scene has moved from an inactive state to an active state.
+        // Use this method to restart any tasks that were paused (or not yet started) when the scene was inactive.
+    }
+
+    func sceneWillResignActive(_ scene: UIScene) {
+        // Called when the scene will move from an active state to an inactive state.
+        // This may occur due to temporary interruptions (ex. an incoming phone call).
+    }
+
+    func sceneWillEnterForeground(_ scene: UIScene) {
+        // Called as the scene transitions from the background to the foreground.
+        // Use this method to undo the changes made on entering the background.
+    }
+
+    func sceneDidEnterBackground(_ scene: UIScene) {
+        // Called as the scene transitions from the foreground to the background.
+        // Use this method to save data, release shared resources, and store enough scene-specific state information
+        // to restore the scene back to its current state.
+    }
+
+
+}
+

Examples/SimpleVideoAnimation/SimpleVIdeoAnimation/ViewController.swift

@@ -0,0 +1,133 @@
+//
+//  ViewController.swift
+//  SimpleVideoAnimation
+//
+//  Created by RenZhu Macro on 2020/7/20.
+//  Copyright © 2020 RenZhu Macro. All rights reserved.
+//
+
+import UIKit
+import AVFoundation
+import MetalVideoProcess
+import PryntTrimmerView
+
+
+class ViewController: UIViewController {
+    
+    @IBOutlet weak var renderView: MetalVideoProcessRenderView!
+    
+    @IBOutlet weak var progressView: TrimmerView!
+    
+    var player: MetalVideoProcessPlayer?
+    var editor: MetalVideoEditor?
+    public var motionIn: MetalVideoProcessMotion = MetalVideoProcessMoveUpMotion()
+    
+    override func viewDidLoad() {
+        super.viewDidLoad()
+        let asset1 = AVAsset(url: Bundle.main.url(forResource: "853", withExtension: "mp4")!)
+        
+        let item1 = MetalVideoEditorItem(asset: asset1)
+        
+        do {
+            let editor = try MetalVideoEditor(videoItems: [item1])
+            self.editor = editor
+            let playerItem = editor.buildPlayerItem()
+            
+            let fadeIn = motionIn
+            fadeIn.timingType = .quadraticEaseOut
+            
+            let fadeOut = MetalVideoProcessFadeOutMotion()
+            fadeOut.timingType = .quarticEaseOut
+ 
+            let fadeInTimeRange = CMTimeRangeMake(start: CMTime(seconds: 0.0), duration: CMTime(seconds: 2.0))
+            fadeIn.saveUniformSettings(forTimelineRange: fadeInTimeRange, trackID: item1.trackID)
+            
+            let fadeOutTimeRange = CMTimeRange(start: item1.timeRange.end - CMTime(seconds: 4.0), duration: CMTime(seconds: 1.5))
+            fadeOut.saveUniformSettings(forTimelineRange: fadeOutTimeRange, trackID: item1.trackID)
+ 
+            let player = try MetalVideoProcessPlayer(playerItem: playerItem)
+            player.playerDelegate = self
+            
+            let background = MetalVideoProcessBackground(trackID: 0)
+            background.aspectRatioType = .Ratio9_16
+            background.canvasSizeType = .Type720p
+            background.setBackgroundType(type: .Blur)
+            
+            let transform = MetalVideoProcessTransformFilter()
+                       transform.saveUniformSettings(forTimelineRange: item1.timeRange, trackID: item1.trackID)
+            transform.roi = CGRect(x: 0.5, y: 0.5, width: 0.5, height: 0.5)
+            fadeIn.roi = transform.roi
+            player.addTarget(background, atTargetIndex: 0, trackID: item1.trackID, targetTrackId: 0)
+             
+            background --> fadeIn //source 0
+            player.addTarget(transform, atTargetIndex: nil, trackID: item1.trackID, targetTrackId: 0) //source 1
+            
+            transform --> fadeIn --> renderView //source 1
+
+            self.player = player
+        } catch {
+            
+        }
+        
+        
+    }
+
+    override func viewDidAppear(_ animated: Bool) {
+        guard let asset = self.editor?.playerItem?.asset else {
+            return
+        }
+        self.progressView.asset = asset
+        self.progressView.delegate = self
+    }
+    
+    override func viewDidDisappear(_ animated: Bool) {
+        self.player?.suspend()
+        self.player?.dispose()
+    }
+    
+    @IBAction func play(_ sender: Any) {
+        self.player?.play()
+    }
+    
+    @IBAction func pause(_ sender: Any) {
+        self.player?.pause()
+    }
+    
+    @IBAction func progressChanged(_ sender: Any) {
+    }
+}
+
+extension ViewController: TrimmerViewDelegate {
+    func didChangePositionBar(_ playerTime: CMTime) {
+        self.player?.seekTo(time: playerTime.seconds)
+    }
+    
+    func positionBarStoppedMoving(_ playerTime: CMTime) {
+        
+    }
+}
+
+extension ViewController: MetalVideoProcessPlayerDelegate {
+    func playbackFrameTimeChanged(frameTime time: CMTime, player: AVPlayer) {
+        if player.rate == 0.0 {
+            return
+        }
+        DispatchQueue.main.async { [weak self] in
+            guard let `self` = self else { return }
+            self.progressView.seek(to: time)
+        }
+        
+    }
+    
+    func playEnded(currentPlayer player: AVPlayer) {
+        
+    }
+    
+    func finishExport(error: NSError?) {
+        
+    }
+    
+    func exportProgressChanged(_ progress: Float) {
+        
+    }
+}

Examples/SimpleVideoAnimation/SimpleVideoAnimation.xcworkspace/contents.xcworkspacedata

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+   version = "1.0">
+   <FileRef
+      location = "group:SimpleVideoAnimation.xcodeproj">
+   </FileRef>
+   <FileRef
+      location = "group:Pods/Pods.xcodeproj">
+   </FileRef>
+</Workspace>

Examples/SimpleVideoAnimation/SimpleVideoAnimation.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>

Examples/SimpleVideoEditor/SimpleVideoEditor/ViewController+UIGestureRecognizerDelegate.swift

@@ -58,7 +58,7 @@ extension ViewController: UIGestureRecognizerDelegate {
             let tanl = ges.translation(in: ges.view)
             
             // have to content the view scaleFactor and the vertex to texture scale.
-            transformFilter.translation = Position(currentPostion.x + Float(tanl.x * self.renderView.contentScaleFactor * 2.0) / Float(self.renderView.drawableSize.width), currentPostion.y - Float(tanl.y * self.renderView.contentScaleFactor * 2.0) / Float(self.renderView.drawableSize.height))
+            transformFilter.translation = Position(currentPostion.x + Float(tanl.x * self.renderView.contentScaleFactor * 2.0) / Float(self.renderView.drawableSize.width), 1.0 - currentPostion.y - Float(tanl.y * self.renderView.contentScaleFactor * 2.0) / Float(self.renderView.drawableSize.height))
             
         } else if ges.state == .ended {
             currentPostion = (transformFilter.translation)

Examples/SimpleVideoExport/SimpleVideoExport/ViewController.swift

@@ -68,7 +68,10 @@ class ViewController: UIViewController {
             transform1.saveUniformSettings(forTimelineRange: item1.timeRange, trackID: item1.trackID)
             
             transform2.saveUniformSettings(forTimelineRange: item2.timeRange, trackID: item2.trackID)
-
+            
+            
+            
+            
             let layer1 = MetalVideoProcessBlendFilter()
             
             videoBackground --> layer1

Examples/SimpleVideoTransition/SimpleVideoTransition.xcodeproj/project.pbxproj

@@ -17,6 +17,7 @@
 		6ADB07A924ADDE450010A817 /* Main.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 6ADB07A724ADDE450010A817 /* Main.storyboard */; };
 		6ADB07AB24ADDE460010A817 /* Assets.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = 6ADB07AA24ADDE460010A817 /* Assets.xcassets */; };
 		6ADB07AE24ADDE460010A817 /* LaunchScreen.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 6ADB07AC24ADDE460010A817 /* LaunchScreen.storyboard */; };
+		AB59B8CC24C5AC8000943BE2 /* NaviViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = AB59B8CA24C5AC8000943BE2 /* NaviViewController.swift */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXContainerItemProxy section */
@@ -55,6 +56,7 @@
 		6ADB07AA24ADDE460010A817 /* Assets.xcassets */ = {isa = PBXFileReference; lastKnownFileType = folder.assetcatalog; path = Assets.xcassets; sourceTree = "<group>"; };
 		6ADB07AD24ADDE460010A817 /* Base */ = {isa = PBXFileReference; lastKnownFileType = file.storyboard; name = Base; path = Base.lproj/LaunchScreen.storyboard; sourceTree = "<group>"; };
 		6ADB07AF24ADDE460010A817 /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
+		AB59B8CA24C5AC8000943BE2 /* NaviViewController.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = NaviViewController.swift; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
@@ -107,6 +109,7 @@
 			children = (
 				6A3E708C24C067C3009A0AC9 /* 853.mp4 */,
 				6A3E708E24C067C3009A0AC9 /* cute.mp4 */,
+				AB59B8CA24C5AC8000943BE2 /* NaviViewController.swift */,
 				6ADB07A124ADDE450010A817 /* AppDelegate.swift */,
 				6ADB07A324ADDE450010A817 /* SceneDelegate.swift */,
 				6ADB07A524ADDE450010A817 /* ViewController.swift */,
@@ -146,7 +149,7 @@
 			isa = PBXProject;
 			attributes = {
 				LastSwiftUpdateCheck = 1150;
-				LastUpgradeCheck = 1150;
+				LastUpgradeCheck = 1200;
 				ORGANIZATIONNAME = "RenZhu Macro";
 				TargetAttributes = {
 					6ADB079D24ADDE450010A817 = {
@@ -208,6 +211,7 @@
 			isa = PBXSourcesBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				AB59B8CC24C5AC8000943BE2 /* NaviViewController.swift in Sources */,
 				6ADB07A624ADDE450010A817 /* ViewController.swift in Sources */,
 				6ADB07A224ADDE450010A817 /* AppDelegate.swift in Sources */,
 				6ADB07A424ADDE450010A817 /* SceneDelegate.swift in Sources */,
@@ -262,6 +266,7 @@
 				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
 				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = YES;
 				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
 				CLANG_WARN_STRICT_PROTOTYPES = YES;
 				CLANG_WARN_SUSPICIOUS_MOVE = YES;
@@ -322,6 +327,7 @@
 				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
 				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = YES;
 				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
 				CLANG_WARN_STRICT_PROTOTYPES = YES;
 				CLANG_WARN_SUSPICIOUS_MOVE = YES;

Examples/SimpleVideoTransition/SimpleVideoTransition.xcodeproj/xcshareddata/xcschemes/SimpleVideoTransition.xcscheme

@@ -0,0 +1,85 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+   LastUpgradeVersion = "1200"
+   version = "1.3">
+   <BuildAction
+      parallelizeBuildables = "YES"
+      buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "YES"
+            buildForArchiving = "YES"
+            buildForAnalyzing = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "6ADB079D24ADDE450010A817"
+               BuildableName = "SimpleVideoTransition.app"
+               BlueprintName = "SimpleVideoTransition"
+               ReferencedContainer = "container:SimpleVideoTransition.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
+   </BuildAction>
+   <TestAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      shouldUseLaunchSchemeArgsEnv = "YES">
+      <AdditionalOptions>
+         <AdditionalOption
+            key = "NSZombieEnabled"
+            value = "YES"
+            isEnabled = "YES">
+         </AdditionalOption>
+      </AdditionalOptions>
+      <Testables>
+      </Testables>
+   </TestAction>
+   <LaunchAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      launchStyle = "0"
+      useCustomWorkingDirectory = "NO"
+      ignoresPersistentStateOnLaunch = "NO"
+      debugDocumentVersioning = "YES"
+      debugServiceExtension = "internal"
+      allowLocationSimulation = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "6ADB079D24ADDE450010A817"
+            BuildableName = "SimpleVideoTransition.app"
+            BlueprintName = "SimpleVideoTransition"
+            ReferencedContainer = "container:SimpleVideoTransition.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </LaunchAction>
+   <ProfileAction
+      buildConfiguration = "Release"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      savedToolIdentifier = ""
+      useCustomWorkingDirectory = "NO"
+      debugDocumentVersioning = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "6ADB079D24ADDE450010A817"
+            BuildableName = "SimpleVideoTransition.app"
+            BlueprintName = "SimpleVideoTransition"
+            ReferencedContainer = "container:SimpleVideoTransition.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>

Examples/SimpleVideoTransition/SimpleVideoTransition/Base.lproj/Main.storyboard

@@ -1,142 +1,73 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="16097" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="BYZ-38-t0r">
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="17132" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="AUR-96-71u">
     <device id="retina5_9" orientation="portrait" appearance="light"/>
     <dependencies>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="16087"/>
+        <deployment identifier="iOS"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="17105.1"/>
         <capability name="Safe area layout guides" minToolsVersion="9.0"/>
+        <capability name="System colors in document resources" minToolsVersion="11.0"/>
         <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
     </dependencies>
     <scenes>
         <!--View Controller-->
         <scene sceneID="tne-QT-ifu">
             <objects>
-                <viewController id="BYZ-38-t0r" customClass="ViewController" customModule="SimpleRealtimeFilterPlayback" customModuleProvider="target" sceneMemberID="viewController">
+                <viewController storyboardIdentifier="ViewController" id="BYZ-38-t0r" customClass="ViewController" customModule="SimpleVideoTransition" customModuleProvider="target" sceneMemberID="viewController">
                     <view key="view" contentMode="scaleToFill" id="8bC-Xf-vdC">
                         <rect key="frame" x="0.0" y="0.0" width="375" height="812"/>
                         <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
                         <subviews>
-                            <view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="Dc5-Dz-opT" customClass="MetalVideoProcessRenderView" customModule="MetalVideoProcess">
-                                <rect key="frame" x="0.0" y="44.000000000000028" width="375" height="468.66666666666674"/>
-                                <color key="backgroundColor" systemColor="systemBackgroundColor" cocoaTouchSystemColor="whiteColor"/>
-                                <constraints>
-                                    <constraint firstAttribute="width" secondItem="Dc5-Dz-opT" secondAttribute="height" multiplier="0.8" id="86r-Og-HwX"/>
-                                </constraints>
-                            </view>
-                            <slider opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" minValue="0.0" maxValue="1" translatesAutoresizingMaskIntoConstraints="NO" id="vYk-6H-dKP">
-                                <rect key="frame" x="8" y="517.66666666666663" width="359" height="31"/>
+                            <slider opaque="NO" contentMode="scaleToFill" misplaced="YES" contentHorizontalAlignment="center" contentVerticalAlignment="center" minValue="0.0" maxValue="1" translatesAutoresizingMaskIntoConstraints="NO" id="vYk-6H-dKP">
+                                <rect key="frame" x="2" y="576" width="359" height="31"/>
                                 <connections>
                                     <action selector="progressChanged:" destination="BYZ-38-t0r" eventType="valueChanged" id="fwh-uk-uYl"/>
                                 </connections>
                             </slider>
-                            <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="K6w-Ud-xUK">
-                                <rect key="frame" x="172.66666666666666" y="552.66666666666663" width="30" height="30"/>
-                                <state key="normal" title="Play"/>
+                            <view contentMode="scaleToFill" misplaced="YES" translatesAutoresizingMaskIntoConstraints="NO" id="Dc5-Dz-opT" customClass="MetalVideoProcessRenderView" customModule="MetalVideoProcess">
+                                <rect key="frame" x="0.0" y="100" width="375" height="468.66666666666674"/>
+                                <color key="backgroundColor" systemColor="systemBackgroundColor"/>
+                                <constraints>
+                                    <constraint firstAttribute="width" secondItem="Dc5-Dz-opT" secondAttribute="height" multiplier="0.8" id="86r-Og-HwX"/>
+                                </constraints>
+                            </view>
+                            <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="system" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="8dD-NO-sG4">
+                                <rect key="frame" x="192" y="612" width="69" height="42"/>
+                                <constraints>
+                                    <constraint firstAttribute="height" constant="42" id="M3N-FO-erk"/>
+                                </constraints>
+                                <state key="normal" title="pause"/>
                                 <connections>
-                                    <action selector="play:" destination="BYZ-38-t0r" eventType="touchUpInside" id="cZ4-2E-l3J"/>
+                                    <action selector="pause:" destination="BYZ-38-t0r" eventType="touchUpInside" id="koL-AD-Vdy"/>
                                 </connections>
                             </button>
-                            <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Blur      track1:" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="ieB-aM-Q6C">
-                                <rect key="frame" x="20" y="663.66666666666663" width="108" height="21"/>
-                                <fontDescription key="fontDescription" type="system" pointSize="17"/>
-                                <nil key="textColor"/>
-                                <nil key="highlightedColor"/>
-                            </label>
-                            <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Gray video:" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="8Il-25-Tij">
-                                <rect key="frame" x="104" y="709.66666666666663" width="87" height="21"/>
-                                <fontDescription key="fontDescription" type="system" pointSize="17"/>
-                                <nil key="textColor"/>
-                                <nil key="highlightedColor"/>
-                            </label>
-                            <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Beauty track1:" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="9fu-53-ZHp">
-                                <rect key="frame" x="20" y="622.66666666666663" width="109" height="21"/>
-                                <fontDescription key="fontDescription" type="system" pointSize="17"/>
-                                <nil key="textColor"/>
-                                <nil key="highlightedColor"/>
-                            </label>
-                            <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="track2:" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="Y6k-OT-zIp">
-                                <rect key="frame" x="208" y="622.66666666666663" width="54" height="21"/>
-                                <fontDescription key="fontDescription" type="system" pointSize="17"/>
-                                <nil key="textColor"/>
-                                <nil key="highlightedColor"/>
-                            </label>
-                            <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="track2:" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="wCL-xj-Wni">
-                                <rect key="frame" x="207" y="663.66666666666663" width="54" height="21"/>
-                                <fontDescription key="fontDescription" type="system" pointSize="17"/>
-                                <nil key="textColor"/>
-                                <nil key="highlightedColor"/>
-                            </label>
-                            <switch opaque="NO" contentMode="scaleToFill" horizontalHuggingPriority="750" verticalHuggingPriority="750" contentHorizontalAlignment="center" contentVerticalAlignment="center" translatesAutoresizingMaskIntoConstraints="NO" id="Lbm-mS-3au">
-                                <rect key="frame" x="139" y="617.66666666666663" width="51" height="31"/>
+                            <button opaque="NO" contentMode="scaleToFill" misplaced="YES" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="system" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="L7o-SP-KhR">
+                                <rect key="frame" x="104" y="612" width="69" height="44"/>
+                                <constraints>
+                                    <constraint firstAttribute="width" constant="69" id="5g0-CY-YQ2"/>
+                                </constraints>
+                                <state key="normal" title="play"/>
                                 <connections>
-                                    <action selector="filterOn:" destination="BYZ-38-t0r" eventType="valueChanged" id="f2R-IT-cw2"/>
-                                </connections>
-                            </switch>
-                            <switch opaque="NO" tag="1" contentMode="scaleToFill" horizontalHuggingPriority="750" verticalHuggingPriority="750" contentHorizontalAlignment="center" contentVerticalAlignment="center" translatesAutoresizingMaskIntoConstraints="NO" id="rJO-mU-xYY">
-                                <rect key="frame" x="138" y="658.66666666666663" width="51" height="31"/>
-                                <connections>
-                                    <action selector="filterOn:" destination="BYZ-38-t0r" eventType="valueChanged" id="yx1-uC-eEF"/>
-                                </connections>
-                            </switch>
-                            <switch opaque="NO" tag="2" contentMode="scaleToFill" horizontalHuggingPriority="750" verticalHuggingPriority="750" contentHorizontalAlignment="center" contentVerticalAlignment="center" translatesAutoresizingMaskIntoConstraints="NO" id="eJu-z5-owd">
-                                <rect key="frame" x="272" y="617.66666666666663" width="51" height="31"/>
-                                <connections>
-                                    <action selector="filterOn:" destination="BYZ-38-t0r" eventType="valueChanged" id="9Y9-ZR-JFD"/>
-                                </connections>
-                            </switch>
-                            <switch opaque="NO" tag="3" contentMode="scaleToFill" horizontalHuggingPriority="750" verticalHuggingPriority="750" contentHorizontalAlignment="center" contentVerticalAlignment="center" translatesAutoresizingMaskIntoConstraints="NO" id="Ufa-eY-5ZC">
-                                <rect key="frame" x="271" y="658.66666666666663" width="51" height="31"/>
-                                <connections>
-                                    <action selector="filterOn:" destination="BYZ-38-t0r" eventType="valueChanged" id="Bsk-J9-CjP"/>
-                                </connections>
-                            </switch>
-                            <switch opaque="NO" tag="4" contentMode="scaleToFill" horizontalHuggingPriority="750" verticalHuggingPriority="750" contentHorizontalAlignment="center" contentVerticalAlignment="center" translatesAutoresizingMaskIntoConstraints="NO" id="tbD-8b-LUS">
-                                <rect key="frame" x="201" y="704.66666666666663" width="51" height="31"/>
-                                <connections>
-                                    <action selector="filterOn:" destination="BYZ-38-t0r" eventType="valueChanged" id="J3N-K6-5di"/>
-                                </connections>
-                            </switch>
-                            <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="gMy-fV-lJB">
-                                <rect key="frame" x="166.66666666666666" y="587.66666666666663" width="42" height="30"/>
-                                <state key="normal" title="Pause"/>
-                                <connections>
-                                    <action selector="pause:" destination="BYZ-38-t0r" eventType="touchUpInside" id="WbY-hn-U3f"/>
+                                    <action selector="play:" destination="BYZ-38-t0r" eventType="touchUpInside" id="ec4-6v-Fe0"/>
                                 </connections>
                             </button>
                         </subviews>
-                        <color key="backgroundColor" systemColor="systemBackgroundColor" cocoaTouchSystemColor="whiteColor"/>
+                        <viewLayoutGuide key="safeArea" id="6Tk-OE-BBY"/>
+                        <color key="backgroundColor" systemColor="systemBackgroundColor"/>
                         <constraints>
-                            <constraint firstItem="eJu-z5-owd" firstAttribute="leading" secondItem="Y6k-OT-zIp" secondAttribute="trailing" constant="10" id="0Ih-iu-pAo"/>
-                            <constraint firstItem="Y6k-OT-zIp" firstAttribute="centerY" secondItem="Lbm-mS-3au" secondAttribute="centerY" id="5T7-S9-kXH"/>
-                            <constraint firstItem="wCL-xj-Wni" firstAttribute="leading" secondItem="rJO-mU-xYY" secondAttribute="trailing" constant="20" id="76t-qu-CCa"/>
                             <constraint firstItem="Dc5-Dz-opT" firstAttribute="top" secondItem="6Tk-OE-BBY" secondAttribute="top" id="7MR-S1-7Xq"/>
-                            <constraint firstItem="Lbm-mS-3au" firstAttribute="leading" secondItem="9fu-53-ZHp" secondAttribute="trailing" constant="10" id="8Uu-ol-v3J"/>
                             <constraint firstItem="vYk-6H-dKP" firstAttribute="top" secondItem="Dc5-Dz-opT" secondAttribute="bottom" constant="5" id="9FO-ag-qBs"/>
                             <constraint firstItem="Dc5-Dz-opT" firstAttribute="leading" secondItem="6Tk-OE-BBY" secondAttribute="leading" id="BlF-9Y-vIn"/>
-                            <constraint firstItem="gMy-fV-lJB" firstAttribute="top" secondItem="K6w-Ud-xUK" secondAttribute="bottom" constant="5" id="Gi5-pV-rO9"/>
-                            <constraint firstItem="gMy-fV-lJB" firstAttribute="centerX" secondItem="8bC-Xf-vdC" secondAttribute="centerX" id="Gqx-bc-4zc"/>
-                            <constraint firstItem="Ufa-eY-5ZC" firstAttribute="centerY" secondItem="wCL-xj-Wni" secondAttribute="centerY" id="Hgc-Ac-M81"/>
-                            <constraint firstItem="rJO-mU-xYY" firstAttribute="leading" secondItem="ieB-aM-Q6C" secondAttribute="trailing" constant="10" id="Iwt-Iv-Se2"/>
-                            <constraint firstItem="K6w-Ud-xUK" firstAttribute="centerX" secondItem="8bC-Xf-vdC" secondAttribute="centerX" id="LaJ-so-qEc"/>
-                            <constraint firstItem="8Il-25-Tij" firstAttribute="centerX" secondItem="8bC-Xf-vdC" secondAttribute="centerX" constant="-40" id="OpR-uB-WtM"/>
+                            <constraint firstItem="L7o-SP-KhR" firstAttribute="top" secondItem="vYk-6H-dKP" secondAttribute="bottom" constant="6" id="FQa-7W-Nj8"/>
+                            <constraint firstItem="8dD-NO-sG4" firstAttribute="leading" secondItem="L7o-SP-KhR" secondAttribute="trailing" constant="19" id="Fjg-ZY-9uz"/>
+                            <constraint firstItem="L7o-SP-KhR" firstAttribute="top" secondItem="8dD-NO-sG4" secondAttribute="top" id="INb-AW-t9N"/>
+                            <constraint firstItem="6Tk-OE-BBY" firstAttribute="bottom" secondItem="L7o-SP-KhR" secondAttribute="bottom" constant="113" id="N7W-JJ-rFn"/>
+                            <constraint firstItem="L7o-SP-KhR" firstAttribute="leading" secondItem="6Tk-OE-BBY" secondAttribute="leading" constant="104" id="P4W-wv-UMV"/>
                             <constraint firstItem="6Tk-OE-BBY" firstAttribute="trailing" secondItem="Dc5-Dz-opT" secondAttribute="trailing" id="Rt7-yT-k9J"/>
                             <constraint firstItem="vYk-6H-dKP" firstAttribute="leading" secondItem="6Tk-OE-BBY" secondAttribute="leading" constant="10" id="UKf-H0-pvm"/>
-                            <constraint firstItem="tbD-8b-LUS" firstAttribute="centerY" secondItem="8Il-25-Tij" secondAttribute="centerY" id="Vqa-LB-raz"/>
-                            <constraint firstItem="8Il-25-Tij" firstAttribute="top" secondItem="rJO-mU-xYY" secondAttribute="bottom" constant="20" id="WcG-FP-5ve"/>
-                            <constraint firstItem="wCL-xj-Wni" firstAttribute="centerY" secondItem="rJO-mU-xYY" secondAttribute="centerY" id="ZZc-6F-iqE"/>
-                            <constraint firstItem="9fu-53-ZHp" firstAttribute="top" secondItem="gMy-fV-lJB" secondAttribute="bottom" constant="5" id="a0O-Xf-ftz"/>
-                            <constraint firstItem="ieB-aM-Q6C" firstAttribute="top" secondItem="9fu-53-ZHp" secondAttribute="bottom" constant="20" id="aEl-4X-oGJ"/>
-                            <constraint firstItem="K6w-Ud-xUK" firstAttribute="top" secondItem="vYk-6H-dKP" secondAttribute="bottom" constant="5" id="aYl-Sa-qn2"/>
-                            <constraint firstItem="tbD-8b-LUS" firstAttribute="leading" secondItem="8Il-25-Tij" secondAttribute="trailing" constant="10" id="eiC-rb-qZN"/>
+                            <constraint firstItem="6Tk-OE-BBY" firstAttribute="trailing" secondItem="8dD-NO-sG4" secondAttribute="trailing" constant="114" id="ajW-8P-48Y"/>
                             <constraint firstItem="6Tk-OE-BBY" firstAttribute="trailing" secondItem="vYk-6H-dKP" secondAttribute="trailing" constant="10" id="itv-bP-sNm"/>
-                            <constraint firstItem="Y6k-OT-zIp" firstAttribute="leading" secondItem="Lbm-mS-3au" secondAttribute="trailing" constant="20" id="jyW-v3-sUE"/>
-                            <constraint firstItem="ieB-aM-Q6C" firstAttribute="leading" secondItem="6Tk-OE-BBY" secondAttribute="leading" constant="20" id="lU2-BQ-chN"/>
-                            <constraint firstItem="Ufa-eY-5ZC" firstAttribute="leading" secondItem="wCL-xj-Wni" secondAttribute="trailing" constant="10" id="sM2-LG-67H"/>
-                            <constraint firstItem="Lbm-mS-3au" firstAttribute="centerY" secondItem="9fu-53-ZHp" secondAttribute="centerY" id="sef-Y8-TX1"/>
-                            <constraint firstItem="rJO-mU-xYY" firstAttribute="centerY" secondItem="ieB-aM-Q6C" secondAttribute="centerY" id="uRA-u6-Tw6"/>
-                            <constraint firstItem="9fu-53-ZHp" firstAttribute="leading" secondItem="6Tk-OE-BBY" secondAttribute="leading" constant="20" id="ynQ-x2-1Fe"/>
-                            <constraint firstItem="eJu-z5-owd" firstAttribute="centerY" secondItem="Y6k-OT-zIp" secondAttribute="centerY" id="z7O-GK-or8"/>
+                            <constraint firstItem="6Tk-OE-BBY" firstAttribute="bottom" secondItem="8dD-NO-sG4" secondAttribute="bottom" constant="124" id="mjl-wp-mzn"/>
                         </constraints>
-                        <viewLayoutGuide key="safeArea" id="6Tk-OE-BBY"/>
                     </view>
                     <connections>
                         <outlet property="progress" destination="vYk-6H-dKP" id="qNJ-VV-aFL"/>
@@ -145,7 +76,27 @@
                 </viewController>
                 <placeholder placeholderIdentifier="IBFirstResponder" id="dkx-z0-nzr" sceneMemberID="firstResponder"/>
             </objects>
-            <point key="canvasLocation" x="131.8840579710145" y="137.94642857142856"/>
+            <point key="canvasLocation" x="130.40000000000001" y="137.4384236453202"/>
+        </scene>
+        <!--NaviViewController-->
+        <scene sceneID="kl0-RY-FE2">
+            <objects>
+                <viewController storyboardIdentifier="NaviViewController" id="AUR-96-71u" userLabel="NaviViewController" customClass="NaviViewController" customModule="SimpleVideoTransition" customModuleProvider="target" sceneMemberID="viewController">
+                    <view key="view" contentMode="scaleToFill" id="uf9-x0-sSc">
+                        <rect key="frame" x="0.0" y="0.0" width="375" height="812"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <viewLayoutGuide key="safeArea" id="jjf-eS-Sa2"/>
+                        <color key="backgroundColor" systemColor="systemBackgroundColor"/>
+                    </view>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="6D3-vd-i7x" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="-959" y="137"/>
         </scene>
     </scenes>
+    <resources>
+        <systemColor name="systemBackgroundColor">
+            <color white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+        </systemColor>
+    </resources>
 </document>

Examples/SimpleVideoTransition/SimpleVideoTransition/Model/ResourceItem.swift

@@ -0,0 +1,38 @@
+//
+//  ResourceItem.swift
+//  SimpleVideoEditor
+//
+//  Created by RenZhu Macro on 2020/7/7.
+//  Copyright © 2020 RenZhu Macro. All rights reserved.
+//
+
+import Foundation
+import MetalVideoProcess
+
+class ResourceItem: MetalVideoEditorItem {
+    
+    public var rotate = 0.0
+    public var scale = Position(1.0, 1.0)
+    //translation 为归一化
+    public var translation = Position(0.0, 0.0)
+    
+    var orientation : UIInterfaceOrientation = .portrait
+    weak var transformFilter: MetalVideoProcessTransformFilter?
+    weak var currentLayer: MetalVideoProcessBlendFilter?
+    var roi: CGRect = CGRect.zero
+    var fillType: MetalVideoProcessTransformFilter.StretchType = .aspectToFill
+    
+    var isSelected: Bool = false
+    
+    var startTimeText: NSString {
+        get {
+            return NSString(format: "%.2f", self.startTime.seconds)
+        }
+    }
+    
+    var durationText: NSString {
+        get {
+            return NSString(format: "%.2f", self.duration.seconds)
+        }
+    }
+}

Examples/SimpleVideoTransition/SimpleVideoTransition/NaviViewController.swift

@@ -0,0 +1,92 @@
+//
+//  NaviViewController.swift
+//  SimpleVideoTransition
+//
+//  Created by RenZhu Macro on 2020/7/2.
+//  Copyright © 2020 RenZhu Macro. All rights reserved.
+//
+
+import UIKit
+import MetalVideoProcess
+import AVFoundation
+import MetalVideoProcess
+
+class NaviViewController: UIViewController {
+    @IBOutlet weak var naviStackView: UIStackView!
+
+    var transitionTimeRange = CMTimeRange.init()
+    
+    let N = 14
+    private func getTransition(index: Int) -> (titleName: String, transObject: MetalVideoProcessTransition) {
+        switch index {
+        case 0:
+        return (titleName: "倒影", transObject: MetalVideoProcessReflectTransition())
+        case 1:
+        return (titleName: "闪白", transObject: MetalVideoProcessShanBaiTransition())
+        case 2:
+        return (titleName: "向下擦除", transObject: MetalVideoProcessEraseDownTransition())
+        case 3:
+        return (titleName: "叠化", transObject: MetalVideoProcessFadeTransition())
+        case 4:
+        return (titleName: "镜像翻转", transObject: MetalVideoProcessMirrorRotateTransition())
+        case 5:
+        return (titleName: "燃烧", transObject: MetalVideoProcessBurnTransition())
+        case 6:
+        return (titleName: "立方体", transObject: MetalVideoProcessCubeTransition())
+        case 7:
+        return (titleName: "向上擦除", transObject: MetalVideoProcessEraseUpTransition())
+        case 8:
+        return (titleName: "向左擦除", transObject: MetalVideoProcessEraseLeftTransition())
+        case 9:
+        return (titleName: "向右擦除", transObject: MetalVideoProcessEraseRightTransition())
+        case 10:
+        return (titleName: "变形", transObject: MetalVideoProcessMorphTransition())
+        case 11:
+        return (titleName: "圆形蒙版", transObject: MetalVideoProcessCircleEraseTransition())
+        case 12:
+        return (titleName: "上移", transObject: MetalVideoProcessVerticalUpGlitchTransition())
+        default:
+        return (titleName: "倒影", transObject: MetalVideoProcessReflectTransition())
+        }
+    }
+    private func getButton(index: Int) -> UIButton {
+        let splitNum = 5.0
+        let pieceWidth = Double(self.view.frame.width) / splitNum
+        let buttonWidth = pieceWidth * 0.8
+        let dIndex = Double(index)
+        let indexX = fmod(dIndex, splitNum) * pieceWidth
+        let indexY = (floor(dIndex / splitNum)) * pieceWidth + 100.0
+        
+        let buttonFrame = CGRect(x: indexX, y: indexY, width: buttonWidth, height: buttonWidth)
+        
+        let but = UIButton(frame: buttonFrame)
+        but.backgroundColor = UIColor(red: 0.3, green: 0.4, blue: 0.3, alpha: 0.7)
+        but.setTitle(getTransition(index: index).titleName, for: .normal)
+       
+        but.titleLabel?.adjustsFontSizeToFitWidth = true
+        but.addTarget(self, action: #selector(self.swithController(_:)), for: .touchUpInside)
+        
+        but.tag = index
+        return but
+    }
+    
+    override func viewDidLoad() {
+        super.viewDidLoad()
+        for index in 0...N - 1 {
+            self.view.addSubview(getButton(index: index))
+        }
+    }
+    
+    @IBAction func swithController(_ sender: UIButton) {
+        
+        let viewController = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "ViewController")  as! ViewController
+        
+        let trans = getTransition(index: sender.tag)
+        
+        viewController.transition = trans.transObject
+        
+        self.present(viewController, animated: true, completion: nil)
+    }
+}
+
+

Examples/SimpleVideoTransition/SimpleVideoTransition/ResourceItemEditView.swift

@@ -0,0 +1,194 @@
+//
+//  ResourceEditorViewController.swift
+//  SimpleVideoEditor
+//
+//  Created by RenZhu Macro on 2020/7/8.
+//  Copyright © 2020 RenZhu Macro. All rights reserved.
+//
+
+import UIKit
+import MetalVideoProcess
+import AVFoundation
+
+class ResourceItemEditView: UIViewController {
+
+    deinit {
+        
+    }
+    
+    public weak var resourceItem: ResourceItem?
+    
+    @IBOutlet weak var timeRangeText: UILabel!
+    @IBOutlet weak var renderView: MetalVideoProcessRenderView!
+    
+    @IBOutlet weak var startTimeSlider: UISlider!
+    
+    @IBOutlet weak var durationSlider: UISlider!
+    
+    @IBOutlet weak var positionSlider: UISlider!
+    
+    var player: MetalVideoProcessPlayer?
+    var editor: MetalVideoEditor?
+    var assetDuration: CMTime = .zero
+    
+    @IBOutlet weak var isMuteSwitch: UISwitch!
+    var isPipItem: Bool = false
+    var isImageResource: Bool = false
+    
+    public func loadResourceItem(_ item: ResourceItem, isPipItem: Bool = false) {
+        self.isPipItem = isPipItem
+        self.resourceItem = item
+        self.isMuteSwitch.isOn = item.isMute
+        
+        if let imageResource = item.resource as? ImageResource {
+            self.isImageResource = true
+            //picture
+            let mtlTexture = imageResource.sourceTexture(at: .zero)!
+            let texture = Texture(orientation: .landscapeLeft, texture: mtlTexture, timingStyle: .stillImage)
+            self.renderView.newTextureAvailable(texture, fromSourceIndex: 0, trackID: 0)
+            
+            
+        } else if let asset = (item.resource as? AVAssetTrackResource)?.asset {
+            assetDuration = asset.duration
+            self.editor = try? MetalVideoEditor(videoItems: [item])
+            
+            
+            guard let playerItem = self.editor?.buildPlayerItem() else {
+                return
+            }
+            
+            self.player = try? MetalVideoProcessPlayer(playerItem: playerItem)
+            
+            let orientation = orientationForTrack(asset: asset)
+            
+            let transform = MetalVideoProcessTransformFilter()
+            
+            switch orientation {
+            case .portrait:
+                break
+            case .landscapeLeft:
+                transform.rotate = 90.0
+                break
+            case .landscapeRight:
+                transform.rotate = -90.0
+                break
+            case .portraitUpsideDown:
+                transform.rotate = 180.0
+                break
+            default:
+                break
+                
+            }
+            
+            self.player?.addTarget(transform, atTargetIndex: nil, trackID: item.trackID, targetTrackId: 0)
+            transform --> self.renderView
+        } else {
+            return //unsupported
+        }
+        
+        
+        
+        self.startTimeSlider.minimumValue = 0.0
+        
+        //min value of a item is 0.1 seconds
+        self.durationSlider.minimumValue = 0.1
+        if self.isImageResource {
+            self.durationSlider.maximumValue = 100.0
+            assetDuration = CMTime(seconds: 100.0)
+        } else {
+            self.durationSlider.maximumValue = Float(assetDuration.seconds)
+        }
+        
+        self.startTimeSlider.maximumValue = self.durationSlider.maximumValue - 0.1
+        
+        self.startTimeSlider.value = Float(item.resource.selectedTimeRange.start.seconds)
+        self.durationSlider.value = Float(item.resource.selectedTimeRange.duration.seconds)
+        self.positionSlider.value = Float(item.startTime.seconds)
+        
+        if self.isPipItem {
+            self.positionSlider.isEnabled = true
+            self.positionSlider.maximumValue = 100.0
+            self.positionSlider.value = Float(item.startTime.seconds)
+        }
+        
+        timeRangeText.text = NSString(format: "s:%.2f d:%.2f p:%.2f",
+                                      self.startTimeSlider.value,
+                                      self.durationSlider.value,
+                                      self.positionSlider.value) as String
+        
+        self.player?.seekTo(time: 0.0)
+    }
+    
+    override func viewDidDisappear(_ animated: Bool) {
+        self.player?.suspend()
+        self.player?.dispose()
+        self.player = nil
+        self.editor = nil
+    }
+    
+    @IBAction func positionValueChanged(_ sender: Any) {
+        self.resourceItem?.startTime = CMTime(seconds: self.positionSlider.value)
+        
+        
+        timeRangeText.text = NSString(format: "s:%.2f d:%.2f p:%.2f",
+        self.startTimeSlider.value,
+        self.durationSlider.value,
+        self.positionSlider.value) as String
+    }
+    
+    @IBAction func startTimeValueChanged(_ sender: Any) {
+        let totalValue = self.startTimeSlider.value + self.durationSlider.value
+        if totalValue > Float(self.assetDuration.seconds) {
+            self.durationSlider.value = Float(self.assetDuration.seconds) - self.startTimeSlider.value
+        }
+        
+        resourceItem?.resource.selectedTimeRange = CMTimeRange(start: CMTime(seconds: self.startTimeSlider.value),
+                                                                    duration: CMTime(seconds: self.durationSlider.value))
+        if self.isPipItem {
+            self.player?.seekTo(time: Float64(resourceItem?.resource.selectedTimeRange.start.seconds ?? 0.0))
+        } else {
+            self.player?.seekTo(time: Float64(self.startTimeSlider.value))
+        }
+        timeRangeText.text = NSString(format: "s:%.2f d:%.2f p:%.2f",
+        self.startTimeSlider.value,
+        self.durationSlider.value,
+        self.positionSlider.value) as String
+        
+    }
+    
+    @IBAction func DurationValueChanged(_ sender: Any) {
+        let totalValue = self.startTimeSlider.value + self.durationSlider.value
+        if totalValue > Float(self.assetDuration.seconds) {
+            self.startTimeSlider.value = Float(self.assetDuration.seconds) - self.durationSlider.value
+        }
+        resourceItem?.resource.selectedTimeRange = CMTimeRange(start: CMTime(seconds: self.startTimeSlider.value),
+                                                            duration: CMTime(seconds: self.durationSlider.value))
+        timeRangeText.text = NSString(format: "s:%.2f d:%.2f p:%.2f",
+        self.startTimeSlider.value,
+        self.durationSlider.value,
+        self.positionSlider.value) as String
+        if self.isImageResource {
+            //No need to render the image with frameTime
+            return
+        }
+        self.player?.seekTo(time: Float64(self.startTimeSlider.value + self.durationSlider.value))
+    }
+    
+    
+    @IBAction func isMuteOn(_ sender: UISwitch) {
+        self.resourceItem?.isMute = sender.isOn
+    }
+    
+    @IBAction func play(_ sender: Any) {
+        guard let playerItem = self.editor?.buildPlayerItem() else {
+            return
+        }
+        self.player?.updatePlayerItem(playerItem: playerItem)
+        
+        self.player?.play()
+    }
+    
+    @IBAction func pause(_ sender: Any) {
+        self.player?.pause()
+    }
+}

Examples/SimpleVideoTransition/SimpleVideoTransition/ResourceItemEditView.xib

@@ -0,0 +1,176 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="16097" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" colorMatched="YES">
+    <device id="retina6_1" orientation="portrait" appearance="light"/>
+    <dependencies>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="16087"/>
+        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
+    </dependencies>
+    <objects>
+        <placeholder placeholderIdentifier="IBFilesOwner" id="-1" userLabel="File's Owner" customClass="ResourceItemEditView" customModule="SimpleVideoEditor" customModuleProvider="target">
+            <connections>
+                <outlet property="durationSlider" destination="20Y-8z-Bjc" id="TLj-DB-WrL"/>
+                <outlet property="isMuteSwitch" destination="Tbd-ZT-wkM" id="QeO-8E-9m5"/>
+                <outlet property="positionSlider" destination="d5k-3R-pnJ" id="DvC-D3-lX9"/>
+                <outlet property="renderView" destination="33l-v0-rcB" id="qUN-dQ-weP"/>
+                <outlet property="startTimeSlider" destination="BaE-Cm-F7T" id="oAw-GL-BIQ"/>
+                <outlet property="timeRangeText" destination="bli-Ir-iaf" id="OhB-Zg-Ggc"/>
+                <outlet property="view" destination="i5M-Pr-FkT" id="sfx-zR-JGt"/>
+            </connections>
+        </placeholder>
+        <placeholder placeholderIdentifier="IBFirstResponder" id="-2" customClass="UIResponder"/>
+        <view clearsContextBeforeDrawing="NO" contentMode="scaleToFill" id="i5M-Pr-FkT">
+            <rect key="frame" x="0.0" y="0.0" width="455" height="540"/>
+            <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+            <subviews>
+                <view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="IS1-mO-qkH">
+                    <rect key="frame" x="0.0" y="0.0" width="455" height="540"/>
+                    <subviews>
+                        <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="s:0.0 d:0.0 p:0.0" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="bli-Ir-iaf">
+                            <rect key="frame" x="178.5" y="10" width="98" height="16"/>
+                            <fontDescription key="fontDescription" type="system" pointSize="13"/>
+                            <nil key="textColor"/>
+                            <nil key="highlightedColor"/>
+                        </label>
+                        <view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="33l-v0-rcB" customClass="MetalVideoProcessRenderView" customModule="MetalVideoProcess">
+                            <rect key="frame" x="20" y="54.5" width="415" height="207.5"/>
+                            <color key="backgroundColor" systemColor="systemBackgroundColor" cocoaTouchSystemColor="whiteColor"/>
+                            <constraints>
+                                <constraint firstAttribute="width" secondItem="33l-v0-rcB" secondAttribute="height" multiplier="2" id="OOq-Fz-7JE"/>
+                            </constraints>
+                        </view>
+                        <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Edit TimeRange" textAlignment="center" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="XLW-Lu-VBj">
+                            <rect key="frame" x="152.5" y="25" width="138" height="19.5"/>
+                            <constraints>
+                                <constraint firstAttribute="width" constant="138" id="AeL-Uh-bdN"/>
+                            </constraints>
+                            <fontDescription key="fontDescription" type="system" weight="medium" pointSize="16"/>
+                            <color key="textColor" red="0.33333333333333331" green="0.33333333333333331" blue="0.33333333333333331" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+                            <nil key="highlightedColor"/>
+                        </label>
+                        <slider opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" value="0.5" minValue="0.0" maxValue="1" translatesAutoresizingMaskIntoConstraints="NO" id="BaE-Cm-F7T">
+                            <rect key="frame" x="103" y="277.5" width="344" height="31"/>
+                            <connections>
+                                <action selector="startTimeValueChanged:" destination="-1" eventType="valueChanged" id="0Iy-N5-Ge1"/>
+                            </connections>
+                        </slider>
+                        <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="StartTime" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="nTw-8t-hm2">
+                            <rect key="frame" x="20" y="282" width="75" height="20.5"/>
+                            <fontDescription key="fontDescription" type="system" pointSize="17"/>
+                            <nil key="textColor"/>
+                            <nil key="highlightedColor"/>
+                        </label>
+                        <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Duration" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="sor-n1-AOA">
+                            <rect key="frame" x="20" y="322.5" width="65.5" height="20.5"/>
+                            <fontDescription key="fontDescription" type="system" pointSize="17"/>
+                            <nil key="textColor"/>
+                            <nil key="highlightedColor"/>
+                        </label>
+                        <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Is Mute" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="MW9-K9-XrY">
+                            <rect key="frame" x="20" y="363" width="56.5" height="20.5"/>
+                            <fontDescription key="fontDescription" type="system" pointSize="17"/>
+                            <nil key="textColor"/>
+                            <nil key="highlightedColor"/>
+                        </label>
+                        <slider opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" value="0.5" minValue="0.0" maxValue="1" translatesAutoresizingMaskIntoConstraints="NO" id="20Y-8z-Bjc">
+                            <rect key="frame" x="103" y="318" width="344" height="31"/>
+                            <connections>
+                                <action selector="DurationValueChanged:" destination="-1" eventType="valueChanged" id="6Au-ng-P7h"/>
+                            </connections>
+                        </slider>
+                        <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="PipPos" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="gt2-Up-oP5">
+                            <rect key="frame" x="20" y="393.5" width="52.5" height="20.5"/>
+                            <fontDescription key="fontDescription" type="system" pointSize="17"/>
+                            <nil key="textColor"/>
+                            <nil key="highlightedColor"/>
+                        </label>
+                        <slider opaque="NO" contentMode="scaleToFill" enabled="NO" contentHorizontalAlignment="center" contentVerticalAlignment="center" value="0.5" minValue="0.0" maxValue="1" translatesAutoresizingMaskIntoConstraints="NO" id="d5k-3R-pnJ">
+                            <rect key="frame" x="103" y="337.5" width="344" height="133.5"/>
+                            <connections>
+                                <action selector="positionValueChanged:" destination="-1" eventType="valueChanged" id="7yz-Bl-8rV"/>
+                            </connections>
+                        </slider>
+                        <switch opaque="NO" contentMode="scaleToFill" horizontalHuggingPriority="750" verticalHuggingPriority="750" contentHorizontalAlignment="center" contentVerticalAlignment="center" translatesAutoresizingMaskIntoConstraints="NO" id="Tbd-ZT-wkM">
+                            <rect key="frame" x="86.5" y="358" width="51" height="31"/>
+                            <connections>
+                                <action selector="isMuteOn:" destination="-1" eventType="valueChanged" id="4qd-1l-V2g"/>
+                            </connections>
+                        </switch>
+                        <stackView opaque="NO" contentMode="scaleToFill" distribution="fillEqually" translatesAutoresizingMaskIntoConstraints="NO" id="9Lx-c3-ISl">
+                            <rect key="frame" x="127.5" y="480" width="200" height="50"/>
+                            <subviews>
+                                <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="oaz-x9-lZJ">
+                                    <rect key="frame" x="0.0" y="0.0" width="100" height="50"/>
+                                    <state key="normal" title="Play"/>
+                                    <connections>
+                                        <action selector="play:" destination="-1" eventType="touchUpInside" id="ZH2-JZ-Oe0"/>
+                                    </connections>
+                                </button>
+                                <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="bcQ-85-RzQ">
+                                    <rect key="frame" x="100" y="0.0" width="100" height="50"/>
+                                    <state key="normal" title="Pause"/>
+                                    <connections>
+                                        <action selector="pause:" destination="-1" eventType="touchUpInside" id="LaU-La-JcS"/>
+                                    </connections>
+                                </button>
+                            </subviews>
+                            <constraints>
+                                <constraint firstAttribute="width" constant="200" id="8AT-OT-jXM"/>
+                                <constraint firstAttribute="height" constant="50" id="9ct-2A-OAg"/>
+                            </constraints>
+                        </stackView>
+                    </subviews>
+                    <constraints>
+                        <constraint firstAttribute="trailing" secondItem="20Y-8z-Bjc" secondAttribute="trailing" constant="10" id="1tK-Ho-DAZ"/>
+                        <constraint firstItem="MW9-K9-XrY" firstAttribute="leading" secondItem="IS1-mO-qkH" secondAttribute="leading" constant="20" id="8Bl-kg-UIr"/>
+                        <constraint firstItem="sor-n1-AOA" firstAttribute="top" secondItem="nTw-8t-hm2" secondAttribute="bottom" constant="20" id="8G0-jo-tS1"/>
+                        <constraint firstItem="bli-Ir-iaf" firstAttribute="top" secondItem="IS1-mO-qkH" secondAttribute="top" constant="10" id="95P-fp-0Gf"/>
+                        <constraint firstItem="MW9-K9-XrY" firstAttribute="top" secondItem="sor-n1-AOA" secondAttribute="bottom" constant="20" id="CcT-dv-0zy"/>
+                        <constraint firstItem="9Lx-c3-ISl" firstAttribute="centerX" secondItem="IS1-mO-qkH" secondAttribute="centerX" id="Dxy-lQ-Lm4"/>
+                        <constraint firstItem="33l-v0-rcB" firstAttribute="leading" secondItem="IS1-mO-qkH" secondAttribute="leading" constant="20" id="FCu-9q-iOm"/>
+                        <constraint firstItem="sor-n1-AOA" firstAttribute="leading" secondItem="nTw-8t-hm2" secondAttribute="leading" id="Fi7-GU-iU1"/>
+                        <constraint firstItem="nTw-8t-hm2" firstAttribute="leading" secondItem="IS1-mO-qkH" secondAttribute="leading" constant="20" id="I16-bg-OVX"/>
+                        <constraint firstAttribute="trailing" secondItem="33l-v0-rcB" secondAttribute="trailing" constant="20" id="Ige-mZ-iAm"/>
+                        <constraint firstItem="bli-Ir-iaf" firstAttribute="centerX" secondItem="IS1-mO-qkH" secondAttribute="centerX" id="Iv0-mA-qmg"/>
+                        <constraint firstItem="d5k-3R-pnJ" firstAttribute="centerY" secondItem="gt2-Up-oP5" secondAttribute="centerY" id="LM2-Im-44w"/>
+                        <constraint firstItem="d5k-3R-pnJ" firstAttribute="width" secondItem="20Y-8z-Bjc" secondAttribute="width" id="LVm-d0-8dR"/>
+                        <constraint firstAttribute="bottom" relation="greaterThanOrEqual" secondItem="gt2-Up-oP5" secondAttribute="bottom" constant="10" id="QUg-zR-ipe"/>
+                        <constraint firstAttribute="trailing" secondItem="BaE-Cm-F7T" secondAttribute="trailing" constant="10" id="RBN-jo-twB"/>
+                        <constraint firstAttribute="trailing" secondItem="d5k-3R-pnJ" secondAttribute="trailing" constant="10" id="RBN-l1-Kbw"/>
+                        <constraint firstItem="BaE-Cm-F7T" firstAttribute="centerY" secondItem="nTw-8t-hm2" secondAttribute="centerY" id="Vty-Xf-bzY"/>
+                        <constraint firstItem="BaE-Cm-F7T" firstAttribute="leading" secondItem="nTw-8t-hm2" secondAttribute="trailing" constant="10" id="Vz0-dI-O0O"/>
+                        <constraint firstItem="9Lx-c3-ISl" firstAttribute="top" secondItem="d5k-3R-pnJ" secondAttribute="bottom" constant="10" id="WSu-0F-xF0"/>
+                        <constraint firstItem="20Y-8z-Bjc" firstAttribute="width" secondItem="BaE-Cm-F7T" secondAttribute="width" id="XH2-i9-bU4"/>
+                        <constraint firstItem="Tbd-ZT-wkM" firstAttribute="leading" secondItem="MW9-K9-XrY" secondAttribute="trailing" constant="10" id="azZ-Ho-4Qs"/>
+                        <constraint firstItem="Tbd-ZT-wkM" firstAttribute="centerY" secondItem="MW9-K9-XrY" secondAttribute="centerY" id="cAG-JT-Czu"/>
+                        <constraint firstItem="gt2-Up-oP5" firstAttribute="leading" secondItem="IS1-mO-qkH" secondAttribute="leading" constant="20" id="cAr-6U-TbS"/>
+                        <constraint firstItem="20Y-8z-Bjc" firstAttribute="centerY" secondItem="sor-n1-AOA" secondAttribute="centerY" id="e8d-yu-mVB"/>
+                        <constraint firstItem="gt2-Up-oP5" firstAttribute="top" secondItem="MW9-K9-XrY" secondAttribute="bottom" constant="10" id="edR-PI-BxV"/>
+                        <constraint firstItem="nTw-8t-hm2" firstAttribute="top" secondItem="33l-v0-rcB" secondAttribute="bottom" constant="20" id="gdq-Qh-R11"/>
+                        <constraint firstItem="33l-v0-rcB" firstAttribute="top" secondItem="XLW-Lu-VBj" secondAttribute="bottom" constant="10" id="kzg-iM-HlJ"/>
+                        <constraint firstAttribute="bottom" secondItem="9Lx-c3-ISl" secondAttribute="bottom" constant="10" id="lqB-g6-vhJ"/>
+                        <constraint firstItem="XLW-Lu-VBj" firstAttribute="top" secondItem="IS1-mO-qkH" secondAttribute="top" constant="25" id="mf9-b7-p4a"/>
+                        <constraint firstItem="XLW-Lu-VBj" firstAttribute="centerX" secondItem="IS1-mO-qkH" secondAttribute="centerX" constant="-6" id="pR8-bb-Q05"/>
+                        <constraint firstAttribute="height" relation="greaterThanOrEqual" constant="450" id="xGd-EA-30x"/>
+                    </constraints>
+                </view>
+            </subviews>
+            <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+            <constraints>
+                <constraint firstAttribute="bottom" secondItem="IS1-mO-qkH" secondAttribute="bottom" id="d8w-V8-fpT"/>
+                <constraint firstItem="IS1-mO-qkH" firstAttribute="leading" secondItem="i5M-Pr-FkT" secondAttribute="leading" id="nIN-WD-C0j"/>
+                <constraint firstItem="IS1-mO-qkH" firstAttribute="top" secondItem="i5M-Pr-FkT" secondAttribute="top" id="ncB-9S-Iub"/>
+                <constraint firstAttribute="trailing" secondItem="IS1-mO-qkH" secondAttribute="trailing" id="rlD-9w-zuN"/>
+            </constraints>
+            <freeformSimulatedSizeMetrics key="simulatedDestinationMetrics"/>
+            <point key="canvasLocation" x="380.43478260869568" y="387.05357142857139"/>
+        </view>
+        <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Label" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" id="VAH-Ff-ctu">
+            <rect key="frame" x="0.0" y="0.0" width="42" height="21"/>
+            <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
+            <fontDescription key="fontDescription" type="system" pointSize="17"/>
+            <nil key="textColor"/>
+            <nil key="highlightedColor"/>
+            <point key="canvasLocation" x="197" y="623"/>
+        </label>
+    </objects>
+</document>

Examples/SimpleVideoTransition/SimpleVideoTransition/ResourceItemTableViewCell.swift

@@ -0,0 +1,25 @@
+//
+//  ResourceItemTableViewCell.swift
+//  SimpleVideoEditor
+//
+//  Created by RenZhu Macro on 2020/7/8.
+//  Copyright © 2020 RenZhu Macro. All rights reserved.
+//
+
+import UIKit
+
+class ResourceItemTableViewCell: UITableViewCell {
+    @IBOutlet weak var trackIdLabel: UILabel!
+    
+    override func awakeFromNib() {
+        super.awakeFromNib()
+        // Initialization code
+    }
+
+    override func setSelected(_ selected: Bool, animated: Bool) {
+        super.setSelected(selected, animated: animated)
+
+        // Configure the view for the selected state
+    }
+
+}

Examples/SimpleVideoTransition/SimpleVideoTransition/SimpleVideoEditor-Bridging-Header.h

@@ -0,0 +1,10 @@
+//
+//  Header.h
+//  SimpleVideoExport
+//
+//  Created by RenZhu Macro on 2020/7/7.
+//  Copyright © 2020 RenZhu Macro. All rights reserved.
+//
+
+#import "ProgressHUD.h"
+#import "MBProgressHUD.h"

Examples/SimpleVideoTransition/SimpleVideoTransition/Vender/DynamicBlurView/BlurLayer.swift

@@ -0,0 +1,131 @@
+//
+//  BlurLayer.swift
+//  DynamicBlurView
+//
+//  Created by Kyohei Ito on 2017/08/14.
+//  Copyright © 2017年 kyohei_ito. All rights reserved.
+//
+
+import UIKit
+
+private extension CGRect {
+    func rectangle(_ s: CGSize) -> CGRect {
+        let x = origin.x / s.width
+        let y = origin.y / s.height
+        let width = size.width / s.width
+        let height = size.height / s.height
+        return CGRect(x: x, y: y, width: width, height: height)
+    }
+}
+
+class BlurLayer: CALayer {
+    private static let blurRadiusKey = "blurRadius"
+    private static let blurLayoutKey = "blurLayout"
+    @NSManaged var blurRadius: CGFloat
+    @NSManaged private var blurLayout: CGFloat
+
+    private var fromBlurRadius: CGFloat?
+    var presentationRadius: CGFloat {
+        if let radius = fromBlurRadius {
+            if let layer = presentation() {
+                return layer.blurRadius
+            } else {
+                return radius
+            }
+        } else {
+            return blurRadius
+        }
+    }
+
+    override class func needsDisplay(forKey key: String) -> Bool {
+        if key == blurRadiusKey || key == blurLayoutKey {
+            return true
+        }
+        return super.needsDisplay(forKey: key)
+    }
+
+    open override func action(forKey event: String) -> CAAction? {
+        if event == BlurLayer.blurRadiusKey {
+            fromBlurRadius = nil
+
+            if let action = super.action(forKey: "opacity") as? CABasicAnimation {
+                fromBlurRadius = (presentation() ?? self).blurRadius
+
+                action.keyPath = event
+                action.fromValue = fromBlurRadius
+                return action
+            }
+        }
+
+        if event == BlurLayer.blurLayoutKey, let action = super.action(forKey: "opacity") as? CABasicAnimation {
+            action.keyPath = event
+            action.fromValue = 0
+            action.toValue = 1
+            return action
+        }
+
+        return super.action(forKey: event)
+    }
+}
+
+extension BlurLayer {
+    func draw(_ image: UIImage, fixes isFixes: Bool, baseLayer: CALayer?) {
+        contents = image.cgImage
+        contentsScale = image.scale
+
+        if isFixes, let blurLayer = presentation() {
+            contentsRect = blurLayer.convert(blurLayer.bounds, to: baseLayer).rectangle(image.size)
+        }
+    }
+
+    func refresh() {
+        fromBlurRadius = nil
+    }
+
+    func animate() {
+        UIView.performWithoutAnimation {
+            blurLayout = 0
+        }
+        blurLayout = 1
+    }
+
+    func render(in context: CGContext, for layer: CALayer) {
+        let layers = hideOverlappingLayers(layer.sublayers)
+        layer.render(in: context)
+        layers.forEach {
+            $0.isHidden = false
+        }
+    }
+
+    private func hideOverlappingLayers(_ layers: [CALayer]?) -> [CALayer] {
+        var hiddenLayers: [CALayer] = []
+        guard let layers = layers else {
+            return hiddenLayers
+        }
+
+        for layer in layers.reversed() {
+            if isHang(to: layer) {
+                return hiddenLayers + hideOverlappingLayers(layer.sublayers)
+            }
+            if layer.isHidden == false {
+                layer.isHidden = true
+                hiddenLayers.append(layer)
+            }
+            if layer == self {
+                return hiddenLayers
+            }
+        }
+        return hiddenLayers
+    }
+
+    private func isHang(to target: CALayer) -> Bool {
+        var layer = superlayer
+        while layer != nil {
+            if layer == target {
+                return true
+            }
+            layer = layer?.superlayer
+        }
+        return false
+    }
+}

Examples/SimpleVideoTransition/SimpleVideoTransition/Vender/DynamicBlurView/CGContext+CGImage.swift

@@ -0,0 +1,31 @@
+//
+//  CGContext+CGImage.swift
+//  DynamicBlurView
+//
+//  Created by Kyohei Ito on 2017/08/17.
+//  Copyright © 2017年 kyohei_ito. All rights reserved.
+//
+
+extension CGContext {
+    static func imageContext(with quality: CaptureQuality, rect: CGRect, opaque: Bool) -> CGContext? {
+        UIGraphicsBeginImageContextWithOptions(rect.size, opaque, quality.imageScale)
+        guard let context = UIGraphicsGetCurrentContext() else {
+            return nil
+        }
+
+        context.translateBy(x: -rect.origin.x, y: -rect.origin.y)
+        context.interpolationQuality = quality.interpolationQuality
+
+        return context
+    }
+
+    func makeImage(with blendColor: UIColor?, blendMode: CGBlendMode, size: CGSize) -> CGImage? {
+        if let color = blendColor {
+            setFillColor(color.cgColor)
+            setBlendMode(blendMode)
+            fill(CGRect(origin: .zero, size: size))
+        }
+
+        return makeImage()
+    }
+}

Examples/SimpleVideoTransition/SimpleVideoTransition/Vender/DynamicBlurView/CGImage+Accelerate.swift

@@ -0,0 +1,65 @@
+//
+//  CGImage+Accelerate.swift
+//  DynamicBlurView
+//
+//  Created by Kyohei Ito on 2017/08/17.
+//  Copyright © 2017年 kyohei_ito. All rights reserved.
+//
+
+import Accelerate
+
+extension CGImage {
+    var area: Int {
+        return width * height
+    }
+
+    private var size: CGSize {
+        return CGSize(width: width, height: height)
+    }
+
+    private var bytes: Int {
+        return bytesPerRow * height
+    }
+
+    private func imageBuffer(from data: UnsafeMutableRawPointer!) -> vImage_Buffer {
+        return vImage_Buffer(data: data, height: vImagePixelCount(height), width: vImagePixelCount(width), rowBytes: bytesPerRow)
+    }
+
+    func blurred(with boxSize: UInt32, iterations: Int, blendColor: UIColor?, blendMode: CGBlendMode) -> CGImage? {
+        guard let providerData = dataProvider?.data else {
+            return nil
+        }
+
+        let inData = malloc(bytes)
+        var inBuffer = imageBuffer(from: inData)
+
+        let outData = malloc(bytes)
+        var outBuffer = imageBuffer(from: outData)
+
+        let tempSize = vImageBoxConvolve_ARGB8888(&inBuffer, &outBuffer, nil, 0, 0, boxSize, boxSize, nil, vImage_Flags(kvImageEdgeExtend + kvImageGetTempBufferSize))
+        let tempData = malloc(tempSize)
+
+        defer {
+            free(inData)
+            free(outData)
+            free(tempData)
+        }
+
+        let source = CFDataGetBytePtr(providerData)
+        memcpy(inBuffer.data, source, bytes)
+
+        for _ in 0..<iterations {
+            vImageBoxConvolve_ARGB8888(&inBuffer, &outBuffer, tempData, 0, 0, boxSize, boxSize, nil, vImage_Flags(kvImageEdgeExtend))
+
+            let temp = inBuffer.data
+            inBuffer.data = outBuffer.data
+            outBuffer.data = temp
+        }
+
+        let context = colorSpace.flatMap {
+            CGContext(data: inBuffer.data, width: width, height: height, bitsPerComponent: bitsPerComponent, bytesPerRow: bytesPerRow, space: $0, bitmapInfo: bitmapInfo.rawValue)
+        }
+
+        return context?.makeImage(with: blendColor, blendMode: blendMode, size: size)
+    }
+}

Examples/SimpleVideoTransition/SimpleVideoTransition/Vender/DynamicBlurView/CaptureQuality.swift

@@ -0,0 +1,32 @@
+//
+//  CaptureQuality.swift
+//  DynamicBlurView
+//
+//  Created by Kyohei Ito on 2017/08/17.
+//  Copyright © 2017年 kyohei_ito. All rights reserved.
+//
+
+public enum CaptureQuality {
+    case `default`
+    case low
+    case medium
+    case high
+
+    var imageScale: CGFloat {
+        switch self {
+        case .default, .high:
+            return 0
+        case .low, .medium:
+            return  1
+        }
+    }
+
+    var interpolationQuality: CGInterpolationQuality {
+        switch self {
+        case .default, .low:
+            return .none
+        case .medium, .high:
+            return .default
+        }
+    }
+}

Examples/SimpleVideoTransition/SimpleVideoTransition/Vender/DynamicBlurView/DynamicBlurView.h

@@ -0,0 +1,19 @@
+//
+//  DynamicBlurView.h
+//  DynamicBlurView
+//
+//  Created by Kyohei Ito on 2015/04/08.
+//  Copyright (c) 2015年 kyohei_ito. All rights reserved.
+//
+
+#import <UIKit/UIKit.h>
+
+//! Project version number for DynamicBlurView.
+FOUNDATION_EXPORT double DynamicBlurViewVersionNumber;
+
+//! Project version string for DynamicBlurView.
+FOUNDATION_EXPORT const unsigned char DynamicBlurViewVersionString[];
+
+// In this header, you should import all the public headers of your framework using statements like #import <DynamicBlurView/PublicHeader.h>
+
+

Examples/SimpleVideoTransition/SimpleVideoTransition/Vender/DynamicBlurView/DynamicBlurView.swift

@@ -0,0 +1,195 @@
+//
+//  DynamicBlurView.swift
+//  DynamicBlurView
+//
+//  Created by Kyohei Ito on 2015/04/08.
+//  Copyright (c) 2015年 kyohei_ito. All rights reserved.
+//
+
+import UIKit
+
+open class DynamicBlurView: UIView {
+    open override class var layerClass : AnyClass {
+        return BlurLayer.self
+    }
+
+    private var staticImage: UIImage?
+    private var displayLink: CADisplayLink?
+    private var blurLayer: BlurLayer {
+        return layer as! BlurLayer
+    }
+    private let mainQueue = DispatchQueue.main
+    private let globalQueue: DispatchQueue = {
+        if #available (iOS 8.0, *) {
+            return .global(qos: .userInteractive)
+        } else {
+            return .global(priority: .high)
+        }
+    }()
+    private var renderingTarget: UIView? {
+        if isDeepRendering {
+            return window
+        } else {
+            return superview
+        }
+    }
+
+    /// When true, it captures displays image and blur it asynchronously. Try to set true if needs more performance.
+    /// Asynchronous drawing is possibly crash when needs to process on main thread that drawing with animation for example.
+    open var drawsAsynchronously: Bool = false
+    /// Radius of blur.
+    open var blurRadius: CGFloat {
+        set { blurLayer.blurRadius = newValue }
+        get { return blurLayer.blurRadius }
+    }
+    /// Default is none.
+    open var trackingMode: TrackingMode = .none {
+        didSet {
+            if trackingMode != oldValue {
+                linkForDisplay()
+            }
+        }
+    }
+    /// Blend color.
+    open var blendColor: UIColor?
+	/// Blend mode.
+    open var blendMode: CGBlendMode = .plusLighter
+    /// Default is 3.
+    open var iterations: Int = 3
+    /// If the view want to render beyond the layer, should be true.
+    open var isDeepRendering: Bool = false
+    /// When none of tracking mode, it can change the radius of blur with the ratio. Should set from 0 to 1.
+    open var blurRatio: CGFloat = 1 {
+        didSet {
+            if let image = staticImage, oldValue != blurRatio {
+                draw(image, blurRadius: blurRadius, fixes: false, baseLayer: renderingTarget?.layer)
+            }
+        }
+    }
+    /// Quality of captured image.
+    open var quality: CaptureQuality = .medium
+
+    public override init(frame: CGRect) {
+        super.init(frame: frame)
+        isUserInteractionEnabled = false
+    }
+
+    public required init?(coder aDecoder: NSCoder) {
+        super.init(coder: aDecoder)
+        isUserInteractionEnabled = false
+    }
+
+    open override func didMoveToWindow() {
+        super.didMoveToWindow()
+
+        if let view = renderingTarget, window != nil && trackingMode == .none {
+            staticImage = snapshotImage(for: view.layer, conversion: !isDeepRendering)
+        }
+    }
+
+    open override func didMoveToSuperview() {
+        super.didMoveToSuperview()
+
+        if superview == nil {
+            displayLink?.invalidate()
+            displayLink = nil
+        } else {
+            linkForDisplay()
+        }
+    }
+
+    private func async(on queue: DispatchQueue, actions: @escaping () -> Void) {
+        if drawsAsynchronously {
+            queue.async(execute: actions)
+        } else {
+            actions()
+        }
+    }
+
+    private func sync(on queue: DispatchQueue, actions: () -> Void) {
+        if drawsAsynchronously {
+            queue.sync(execute: actions)
+        } else {
+            actions()
+        }
+    }
+
+    private func draw(_ image: UIImage, blurRadius radius: CGFloat, fixes isFixes: Bool, baseLayer: CALayer?) {
+        async(on: globalQueue) { [weak self] in
+            if let me = self, let blurredImage = image.blurred(radius: radius, iterations: me.iterations, ratio: me.blurRatio, blendColor: me.blendColor, blendMode: me.blendMode) {
+                me.sync(on: me.mainQueue) {
+                    me.blurLayer.draw(blurredImage, fixes: isFixes, baseLayer: baseLayer)
+                }
+            }
+        }
+    }
+
+    private func blurLayerRect(to layer: CALayer, conversion: Bool) -> CGRect {
+        if conversion {
+            let presentationLayer = blurLayer.presentation() ?? blurLayer
+            return presentationLayer.convert(presentationLayer.bounds, to: layer)
+        } else {
+            return layer.bounds
+        }
+    }
+
+    private func snapshotImage(for layer: CALayer, conversion: Bool) -> UIImage? {
+        let rect = blurLayerRect(to: layer, conversion: conversion)
+        guard let context = CGContext.imageContext(with: quality, rect: rect, opaque: isOpaque) else {
+            return nil
+        }
+
+        blurLayer.render(in: context, for: layer)
+
+        defer {
+            UIGraphicsEndImageContext()
+        }
+
+        return UIGraphicsGetImageFromCurrentImageContext()
+    }
+}
+
+extension DynamicBlurView {
+    open override func display(_ layer: CALayer) {
+        let blurRadius = blurLayer.presentationRadius
+        let isFixes = isDeepRendering && staticImage != nil
+        if let view = renderingTarget, let image = staticImage ?? snapshotImage(for: view.layer, conversion: !isFixes) {
+            draw(image, blurRadius: blurRadius, fixes: isFixes, baseLayer: view.layer)
+        }
+    }
+}
+
+extension DynamicBlurView {
+    private func linkForDisplay() {
+        displayLink?.invalidate()
+        displayLink = UIScreen.main.displayLink(withTarget: self, selector: #selector(DynamicBlurView.displayDidRefresh(_:)))
+        displayLink?.add(to: .main, forMode: RunLoop.Mode(rawValue: trackingMode.description))
+    }
+
+    @objc private func displayDidRefresh(_ displayLink: CADisplayLink) {
+        display(layer)
+    }
+}
+
+extension DynamicBlurView {
+    /// Remove cache of blur image then get it again.
+    open func refresh() {
+        blurLayer.refresh()
+        staticImage = nil
+        blurRatio = 1
+        display(layer)
+    }
+
+    /// Remove cache of blur image.
+    open func remove() {
+        blurLayer.refresh()
+        staticImage = nil
+        blurRatio = 1
+        layer.contents = nil
+    }
+
+    /// Should use when needs to change layout with animation when is set none of tracking mode.
+    public func animate() {
+        blurLayer.animate()
+    }
+}

Examples/SimpleVideoTransition/SimpleVideoTransition/Vender/DynamicBlurView/TrackingMode.swift

@@ -0,0 +1,25 @@
+//
+//  TrackingMode.swift
+//  DynamicBlurView
+//
+//  Created by Kyohei Ito on 2017/08/17.
+//  Copyright © 2017年 kyohei_ito. All rights reserved.
+//
+
+public enum TrackingMode: CustomStringConvertible {
+    case tracking
+    case common
+    case none
+
+    public var description: String {
+        switch self {
+        case .tracking:
+            return RunLoop.Mode.tracking.rawValue
+        case .common:
+            return RunLoop.Mode.common.rawValue
+        case .none:
+            return ""
+        }
+    }
+}
+

Examples/SimpleVideoTransition/SimpleVideoTransition/Vender/DynamicBlurView/UIImage+Blur.swift

@@ -0,0 +1,28 @@
+//
+//  UIImage+Blur.swift
+//  DynamicBlurView
+//
+//  Created by Kyohei Ito on 2017/08/11.
+//  Copyright © 2017年 kyohei_ito. All rights reserved.
+//
+
+public extension UIImage {
+    func blurred(radius: CGFloat, iterations: Int, ratio: CGFloat, blendColor color: UIColor?, blendMode mode: CGBlendMode) -> UIImage? {
+        guard let cgImage = cgImage else {
+            return nil
+        }
+
+        if cgImage.area <= 0 || radius <= 0 {
+            return self
+        }
+
+        var boxSize = UInt32(radius * scale * ratio)
+        if boxSize % 2 == 0 {
+            boxSize += 1
+        }
+
+        return cgImage.blurred(with: boxSize, iterations: iterations, blendColor: color, blendMode: mode).map {
+            UIImage(cgImage: $0, scale: scale, orientation: imageOrientation)
+        }
+    }
+}

Examples/SimpleVideoTransition/SimpleVideoTransition/Vender/PopupDialog/InteractiveTransition.swift

@@ -0,0 +1,86 @@
+//
+//  PopupDialogInteractiveTransition.swift
+//
+//  Copyright (c) 2016 Orderella Ltd. (http://orderella.co.uk)
+//  Author - Martin Wildfeuer (http://www.mwfire.de)
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+//
+
+import Foundation
+
+// Handles interactive transition triggered via pan gesture recognizer on dialog
+final internal class InteractiveTransition: UIPercentDrivenInteractiveTransition {
+
+    // If the interactive transition was started
+    var hasStarted = false
+
+    // If the interactive transition
+    var shouldFinish = false
+
+    // The view controller containing the views
+    // with attached gesture recognizers
+    weak var viewController: UIViewController?
+
+    @objc func handlePan(_ sender: UIPanGestureRecognizer) {
+
+        guard let vc = viewController else { return }
+
+        guard let progress = calculateProgress(sender: sender) else { return }
+
+        switch sender.state {
+        case .began:
+            hasStarted = true
+            vc.dismiss(animated: true, completion: nil)
+        case .changed:
+            shouldFinish = progress > 0.3
+            update(progress)
+        case .cancelled:
+            hasStarted = false
+            cancel()
+        case .ended:
+            hasStarted = false
+            completionSpeed = 0.55
+            shouldFinish ? finish() : cancel()
+        default:
+            break
+        }
+    }
+}
+
+internal extension InteractiveTransition {
+
+    /*!
+     Translates the pan gesture recognizer position to the progress percentage
+     - parameter sender: A UIPanGestureRecognizer
+     - returns: Progress
+     */
+    func calculateProgress(sender: UIPanGestureRecognizer) -> CGFloat? {
+        guard let vc = viewController else { return nil }
+
+        // http://www.thorntech.com/2016/02/ios-tutorial-close-modal-dragging/
+        let translation = sender.translation(in: vc.view)
+        let verticalMovement = translation.y / vc.view.bounds.height
+        let downwardMovement = fmaxf(Float(verticalMovement), 0.0)
+        let downwardMovementPercent = fminf(downwardMovement, 1.0)
+        let progress = CGFloat(downwardMovementPercent)
+
+        return progress
+    }
+}

Examples/SimpleVideoTransition/SimpleVideoTransition/Vender/PopupDialog/PopupDialog+Keyboard.swift

@@ -0,0 +1,132 @@
+//
+//  PopupDialog+Keyboard.swift
+//
+//  Copyright (c) 2016 Orderella Ltd. (http://orderella.co.uk)
+//  Author - Martin Wildfeuer (http://www.mwfire.de)
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+//
+
+import Foundation
+import UIKit
+
+/// This extension is designed to handle dialog positioning
+/// if a keyboard is displayed while the popup is on top
+internal extension PopupDialog {
+
+    // MARK: - Keyboard & orientation observers
+
+    /*! Add obserservers for UIKeyboard notifications */
+    func addObservers() {
+        NotificationCenter.default.addObserver(self, selector: #selector(orientationChanged),
+                                                         name: UIDevice.orientationDidChangeNotification,
+                                                         object: nil)
+
+        NotificationCenter.default.addObserver(self,
+                                                         selector: #selector(keyboardWillShow),
+                                                         name: UIResponder.keyboardWillShowNotification,
+                                                         object: nil)
+
+        NotificationCenter.default.addObserver(self,
+                                                         selector: #selector(keyboardWillHide),
+                                                         name: UIResponder.keyboardWillHideNotification,
+                                                         object: nil)
+
+        NotificationCenter.default.addObserver(self,
+                                                         selector: #selector(keyboardWillChangeFrame),
+                                                         name: UIResponder.keyboardWillChangeFrameNotification,
+                                                         object: nil)
+    }
+
+    /*! Remove observers */
+    func removeObservers() {
+        NotificationCenter.default.removeObserver(self,
+                                                            name: UIDevice.orientationDidChangeNotification,
+                                                            object: nil)
+
+        NotificationCenter.default.removeObserver(self,
+                                                            name: UIResponder.keyboardWillShowNotification,
+                                                            object: nil)
+
+        NotificationCenter.default.removeObserver(self,
+                                                            name: UIResponder.keyboardWillHideNotification,
+                                                            object: nil)
+
+        NotificationCenter.default.removeObserver(self,
+                                                            name: UIResponder.keyboardWillChangeFrameNotification,
+                                                            object: nil)
+    }
+
+    // MARK: - Actions
+
+    /*!
+     Keyboard will show notification listener
+     - parameter notification: NSNotification
+     */
+    @objc fileprivate func keyboardWillShow(_ notification: Notification) {
+        guard isTopAndVisible else { return }
+        keyboardShown = true
+        centerPopup()
+    }
+
+    /*!
+     Keyboard will hide notification listener
+     - parameter notification: NSNotification
+     */
+    @objc fileprivate func keyboardWillHide(_ notification: Notification) {
+        guard isTopAndVisible else { return }
+        keyboardShown = false
+        centerPopup()
+    }
+
+    /*!
+     Keyboard will change frame notification listener
+     - parameter notification: NSNotification
+     */
+    @objc fileprivate func keyboardWillChangeFrame(_ notification: Notification) {
+        guard let keyboardRect = (notification as NSNotification).userInfo?[UIResponder.keyboardFrameEndUserInfoKey] as? NSValue else {
+            return
+        }
+        keyboardHeight = keyboardRect.cgRectValue.height
+    }
+
+    /*!
+     Listen to orientation changes
+     - parameter notification: NSNotification
+     */
+    @objc fileprivate func orientationChanged(_ notification: Notification) {
+        if keyboardShown { centerPopup() }
+    }
+
+    fileprivate func centerPopup() {
+
+        // Make sure keyboard should reposition on keayboard notifications
+        guard keyboardShiftsView else { return }
+
+        // Make sure a valid keyboard height is available
+        guard let keyboardHeight = keyboardHeight else { return }
+
+        // Calculate new center of shadow background
+        let popupCenter =  keyboardShown ? keyboardHeight / -2 : 0
+
+        // Reposition and animate
+        popupContainerView.centerYConstraint?.constant = popupCenter
+        popupContainerView.pv_layoutIfNeededAnimated()
+    }
+}

Examples/SimpleVideoTransition/SimpleVideoTransition/Vender/PopupDialog/PopupDialog.swift

@@ -0,0 +1,342 @@
+//
+//  PopupDialog.swift
+//
+//  Copyright (c) 2016 Orderella Ltd. (http://orderella.co.uk)
+//  Author - Martin Wildfeuer (http://www.mwfire.de)
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+//
+
+import Foundation
+import UIKit
+
+/// Creates a Popup dialog similar to UIAlertController
+final public class PopupDialog: UIViewController {
+
+    // MARK: Private / Internal
+
+    /// First init flag
+    fileprivate var initialized = false
+    
+    /// StatusBar display related
+    fileprivate let hideStatusBar: Bool
+    fileprivate var statusBarShouldBeHidden: Bool = false
+    
+    /// Width for iPad displays
+    fileprivate let preferredWidth: CGFloat
+
+    /// The completion handler
+    fileprivate var completion: (() -> Void)?
+
+    /// The custom transition presentation manager
+    fileprivate var presentationManager: PresentationManager!
+
+    /// Interactor class for pan gesture dismissal
+    fileprivate lazy var interactor = InteractiveTransition()
+
+    /// Returns the controllers view
+    internal var popupContainerView: PopupDialogContainerView {
+        return view as! PopupDialogContainerView // swiftlint:disable:this force_cast
+    }
+
+    /// The set of buttons
+    fileprivate var buttons = [PopupDialogButton]()
+
+    /// Whether keyboard has shifted view
+    internal var keyboardShown = false
+
+    /// Keyboard height
+    internal var keyboardHeight: CGFloat?
+
+    // MARK: Public
+
+    /// The content view of the popup dialog
+    public var viewController: UIViewController
+
+    /// Whether or not to shift view for keyboard display
+    public var keyboardShiftsView = true
+
+    // MARK: - Initializers
+
+    /*!
+     Creates a standard popup dialog with title, message and image field
+
+     - parameter title:            The dialog title
+     - parameter message:          The dialog message
+     - parameter image:            The dialog image
+     - parameter buttonAlignment:  The dialog button alignment
+     - parameter transitionStyle:  The dialog transition style
+     - parameter preferredWidth:   The preferred width for iPad screens
+     - parameter tapGestureDismissal: Indicates if dialog can be dismissed via tap gesture
+     - parameter panGestureDismissal: Indicates if dialog can be dismissed via pan gesture
+     - parameter hideStatusBar:    Whether to hide the status bar on PopupDialog presentation
+     - parameter completion:       Completion block invoked when dialog was dismissed
+
+     - returns: Popup dialog default style
+     */
+    @objc public convenience init(
+                title: String?,
+                message: String?,
+                image: UIImage? = nil,
+                buttonAlignment: NSLayoutConstraint.Axis = .vertical,
+                transitionStyle: PopupDialogTransitionStyle = .bounceUp,
+                preferredWidth: CGFloat = 340,
+                tapGestureDismissal: Bool = true,
+                panGestureDismissal: Bool = true,
+                hideStatusBar: Bool = false,
+                completion: (() -> Void)? = nil) {
+
+        // Create and configure the standard popup dialog view
+        let viewController = PopupDialogDefaultViewController()
+        viewController.titleText   = title
+        viewController.messageText = message
+        viewController.image       = image
+
+        // Call designated initializer
+        self.init(viewController: viewController,
+                  buttonAlignment: buttonAlignment,
+                  transitionStyle: transitionStyle,
+                  preferredWidth: preferredWidth,
+                  tapGestureDismissal: tapGestureDismissal,
+                  panGestureDismissal: panGestureDismissal,
+                  hideStatusBar: hideStatusBar,
+                  completion: completion)
+    }
+
+    /*!
+     Creates a popup dialog containing a custom view
+
+     - parameter viewController:   A custom view controller to be displayed
+     - parameter buttonAlignment:  The dialog button alignment
+     - parameter transitionStyle:  The dialog transition style
+     - parameter preferredWidth:   The preferred width for iPad screens
+     - parameter tapGestureDismissal: Indicates if dialog can be dismissed via tap gesture
+     - parameter panGestureDismissal: Indicates if dialog can be dismissed via pan gesture
+     - parameter hideStatusBar:    Whether to hide the status bar on PopupDialog presentation
+     - parameter completion:       Completion block invoked when dialog was dismissed
+
+     - returns: Popup dialog with a custom view controller
+     */
+    @objc public init(
+        viewController: UIViewController,
+        buttonAlignment: NSLayoutConstraint.Axis = .vertical,
+        transitionStyle: PopupDialogTransitionStyle = .bounceUp,
+        preferredWidth: CGFloat = 340,
+        tapGestureDismissal: Bool = true,
+        panGestureDismissal: Bool = true,
+        hideStatusBar: Bool = false,
+        completion: (() -> Void)? = nil) {
+
+        self.viewController = viewController
+        self.preferredWidth = preferredWidth
+        self.hideStatusBar = hideStatusBar
+        self.completion = completion
+        super.init(nibName: nil, bundle: nil)
+
+        // Init the presentation manager
+        presentationManager = PresentationManager(transitionStyle: transitionStyle, interactor: interactor)
+
+        // Assign the interactor view controller
+        interactor.viewController = self
+
+        // Define presentation styles
+        transitioningDelegate = presentationManager
+        modalPresentationStyle = .custom
+        
+        // StatusBar setup
+        modalPresentationCapturesStatusBarAppearance = true
+
+        // Add our custom view to the container
+        addChild(viewController)
+        popupContainerView.stackView.insertArrangedSubview(viewController.view, at: 0)
+        popupContainerView.buttonStackView.axis = buttonAlignment
+        viewController.didMove(toParent: self)
+
+        // Allow for dialog dismissal on background tap
+        if tapGestureDismissal {
+            let tapRecognizer = UITapGestureRecognizer(target: self, action: #selector(handleTap))
+            tapRecognizer.cancelsTouchesInView = false
+            popupContainerView.addGestureRecognizer(tapRecognizer)
+        }
+        // Allow for dialog dismissal on dialog pan gesture
+        if panGestureDismissal {
+            let panRecognizer = UIPanGestureRecognizer(target: interactor, action: #selector(InteractiveTransition.handlePan))
+            panRecognizer.cancelsTouchesInView = false
+            popupContainerView.stackView.addGestureRecognizer(panRecognizer)
+        }
+    }
+
+    // Init with coder not implemented
+    required public init?(coder aDecoder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+
+    // MARK: - View life cycle
+
+    /// Replaces controller view with popup view
+    public override func loadView() {
+        view = PopupDialogContainerView(frame: UIScreen.main.bounds, preferredWidth: preferredWidth)
+    }
+
+    public override func viewWillAppear(_ animated: Bool) {
+        super.viewWillAppear(animated)
+        addObservers()
+
+        guard !initialized else { return }
+        appendButtons()
+        initialized = true
+    }
+    
+    public override func viewDidAppear(_ animated: Bool) {
+        super.viewDidAppear(animated)
+        
+        statusBarShouldBeHidden = hideStatusBar
+        UIView.animate(withDuration: 0.15) {
+            self.setNeedsStatusBarAppearanceUpdate()
+        }
+    }
+
+    public override func viewWillDisappear(_ animated: Bool) {
+        super.viewWillDisappear(animated)
+        removeObservers()
+    }
+
+    deinit {
+        completion?()
+        completion = nil
+    }
+
+    // MARK: - Dismissal related
+
+    @objc fileprivate func handleTap(_ sender: UITapGestureRecognizer) {
+
+        // Make sure it's not a tap on the dialog but the background
+        let point = sender.location(in: popupContainerView.stackView)
+        guard !popupContainerView.stackView.point(inside: point, with: nil) else { return }
+        dismiss()
+    }
+
+    /*!
+     Dismisses the popup dialog
+     */
+    @objc public func dismiss(_ completion: (() -> Void)? = nil) {
+        self.dismiss(animated: true) {
+            completion?()
+        }
+    }
+
+    // MARK: - Button related
+
+    /*!
+     Appends the buttons added to the popup dialog
+     to the placeholder stack view
+     */
+    fileprivate func appendButtons() {
+        
+        // Add action to buttons
+        let stackView = popupContainerView.stackView
+        let buttonStackView = popupContainerView.buttonStackView
+        if buttons.isEmpty {
+            stackView.removeArrangedSubview(popupContainerView.buttonStackView)
+        }
+        
+        for (index, button) in buttons.enumerated() {
+            button.needsLeftSeparator = buttonStackView.axis == .horizontal && index > 0
+            buttonStackView.addArrangedSubview(button)
+            button.addTarget(self, action: #selector(buttonTapped(_:)), for: .touchUpInside)
+        }
+    }
+
+    /*!
+     Adds a single PopupDialogButton to the Popup dialog
+     - parameter button: A PopupDialogButton instance
+     */
+    @objc public func addButton(_ button: PopupDialogButton) {
+        buttons.append(button)
+    }
+
+    /*!
+     Adds an array of PopupDialogButtons to the Popup dialog
+     - parameter buttons: A list of PopupDialogButton instances
+     */
+    @objc public func addButtons(_ buttons: [PopupDialogButton]) {
+        self.buttons += buttons
+    }
+
+    /// Calls the action closure of the button instance tapped
+    @objc fileprivate func buttonTapped(_ button: PopupDialogButton) {
+        if button.dismissOnTap {
+            dismiss({ button.buttonAction?() })
+        } else {
+            button.buttonAction?()
+        }
+    }
+
+    /*!
+     Simulates a button tap for the given index
+     Makes testing a breeze
+     - parameter index: The index of the button to tap
+     */
+    public func tapButtonWithIndex(_ index: Int) {
+        let button = buttons[index]
+        button.buttonAction?()
+    }
+    
+    // MARK: - StatusBar display related
+    
+    public override var prefersStatusBarHidden: Bool {
+        return statusBarShouldBeHidden
+    }
+    
+    public override var preferredStatusBarUpdateAnimation: UIStatusBarAnimation {
+        return .slide
+    }
+}
+
+// MARK: - View proxy values
+
+extension PopupDialog {
+
+    /// The button alignment of the alert dialog
+    @objc public var buttonAlignment: NSLayoutConstraint.Axis {
+        get {
+            return popupContainerView.buttonStackView.axis
+        }
+        set {
+            popupContainerView.buttonStackView .axis = newValue
+            popupContainerView.pv_layoutIfNeededAnimated()
+        }
+    }
+
+    /// The transition style
+    @objc public var transitionStyle: PopupDialogTransitionStyle {
+        get { return presentationManager.transitionStyle }
+        set { presentationManager.transitionStyle = newValue }
+    }
+}
+
+// MARK: - Shake
+
+extension PopupDialog {
+    
+    /// Performs a shake animation on the dialog
+    @objc public func shake() {
+        popupContainerView.pv_shake()
+    }
+}

Examples/SimpleVideoTransition/SimpleVideoTransition/Vender/PopupDialog/PopupDialogButton.swift

@@ -0,0 +1,166 @@
+//
+//  PopupDialogButton.swift
+//
+//  Copyright (c) 2016 Orderella Ltd. (http://orderella.co.uk)
+//  Author - Martin Wildfeuer (http://www.mwfire.de)
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+//
+
+import Foundation
+import UIKit
+
+/// Represents the default button for the popup dialog
+open class PopupDialogButton: UIButton {
+
+    public typealias PopupDialogButtonAction = () -> Void
+
+    // MARK: Public
+
+    /// The font and size of the button title
+    @objc open dynamic var titleFont: UIFont? {
+        get { return titleLabel?.font }
+        set { titleLabel?.font = newValue }
+    }
+    
+    /// The height of the button
+    @objc open dynamic var buttonHeight: Int
+    
+    /// The title color of the button
+    @objc open dynamic var titleColor: UIColor? {
+        get { return self.titleColor(for: UIControl.State()) }
+        set { setTitleColor(newValue, for: UIControl.State()) }
+    }
+
+    /// The background color of the button
+    @objc open dynamic var buttonColor: UIColor? {
+        get { return backgroundColor }
+        set { backgroundColor = newValue }
+    }
+
+    /// The separator color of this button
+    @objc open dynamic var separatorColor: UIColor? {
+        get { return separator.backgroundColor }
+        set {
+            separator.backgroundColor = newValue
+            leftSeparator.backgroundColor = newValue
+        }
+    }
+
+    /// Default appearance of the button
+    open var defaultTitleFont      = UIFont.systemFont(ofSize: 14)
+    open var defaultTitleColor     = UIColor(red: 0.25, green: 0.53, blue: 0.91, alpha: 1)
+    open var defaultButtonColor    = UIColor.clear
+    open var defaultSeparatorColor = UIColor(white: 0.9, alpha: 1)
+
+    /// Whether button should dismiss popup when tapped
+    @objc open var dismissOnTap = true
+
+    /// The action called when the button is tapped
+    open fileprivate(set) var buttonAction: PopupDialogButtonAction?
+
+    // MARK: Private
+
+    fileprivate lazy var separator: UIView = {
+        let line = UIView(frame: .zero)
+        line.translatesAutoresizingMaskIntoConstraints = false
+        return line
+    }()
+
+    fileprivate lazy var leftSeparator: UIView = {
+        let line = UIView(frame: .zero)
+        line.translatesAutoresizingMaskIntoConstraints = false
+        line.alpha = 0
+        return line
+    }()
+
+    // MARK: Internal
+
+    internal var needsLeftSeparator: Bool = false {
+        didSet {
+            leftSeparator.alpha = needsLeftSeparator ? 1.0 : 0.0
+        }
+    }
+
+    // MARK: Initializers
+
+    /*!
+     Creates a button that can be added to the popup dialog
+
+     - parameter title:         The button title
+     - parameter dismisssOnTap: Whether a tap automatically dismisses the dialog
+     - parameter action:        The action closure
+
+     - returns: PopupDialogButton
+     */
+    @objc public init(title: String, height: Int = 45, dismissOnTap: Bool = true, action: PopupDialogButtonAction?) {
+
+        // Assign the button height
+        buttonHeight = height
+        
+        // Assign the button action
+        buttonAction = action
+
+        super.init(frame: .zero)
+
+        // Set the button title
+        setTitle(title, for: UIControl.State())
+
+        self.dismissOnTap = dismissOnTap
+
+        // Setup the views
+        setupView()
+    }
+
+    required public init?(coder aDecoder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+
+    // MARK: View setup
+
+    open func setupView() {
+
+        // Default appearance
+        setTitleColor(defaultTitleColor, for: UIControl.State())
+        titleLabel?.font              = defaultTitleFont
+        backgroundColor               = defaultButtonColor
+        separator.backgroundColor     = defaultSeparatorColor
+        leftSeparator.backgroundColor = defaultSeparatorColor
+
+        // Add and layout views
+        addSubview(separator)
+        addSubview(leftSeparator)
+
+        let views = ["separator": separator, "leftSeparator": leftSeparator, "button": self]
+        let metrics = ["buttonHeight": buttonHeight]
+        var constraints = [NSLayoutConstraint]()
+        constraints += NSLayoutConstraint.constraints(withVisualFormat: "V:[button(buttonHeight)]", options: [], metrics: metrics, views: views)
+        constraints += NSLayoutConstraint.constraints(withVisualFormat: "H:|[separator]|", options: [], metrics: nil, views: views)
+        constraints += NSLayoutConstraint.constraints(withVisualFormat: "V:|[separator(1)]", options: [], metrics: nil, views: views)
+        constraints += NSLayoutConstraint.constraints(withVisualFormat: "H:|[leftSeparator(1)]", options: [], metrics: nil, views: views)
+        constraints += NSLayoutConstraint.constraints(withVisualFormat: "V:|[leftSeparator]|", options: [], metrics: nil, views: views)
+        NSLayoutConstraint.activate(constraints)
+    }
+
+    open override var isHighlighted: Bool {
+        didSet {
+            isHighlighted ? pv_fade(.out, 0.5) : pv_fade(.in, 1.0)
+        }
+    }
+}

Examples/SimpleVideoTransition/SimpleVideoTransition/Vender/PopupDialog/PopupDialogContainerView.swift

@@ -0,0 +1,197 @@
+//
+//  PopupDialogContainerView.swift
+//  Pods
+//
+//  Copyright (c) 2016 Orderella Ltd. (http://orderella.co.uk)
+//  Author - Martin Wildfeuer (http://www.mwfire.de)
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+//
+
+import Foundation
+import UIKit
+
+/// The main view of the popup dialog
+final public class PopupDialogContainerView: UIView {
+
+    // MARK: - Appearance
+
+    /// The background color of the popup dialog
+    override public dynamic var backgroundColor: UIColor? {
+        get { return container.backgroundColor }
+        set { container.backgroundColor = newValue }
+    }
+
+    /// The corner radius of the popup view
+    @objc public dynamic var cornerRadius: Float {
+        get { return Float(shadowContainer.layer.cornerRadius) }
+        set {
+            let radius = CGFloat(newValue)
+            shadowContainer.layer.cornerRadius = radius
+            container.layer.cornerRadius = radius
+        }
+    }
+    
+    // MARK: Shadow related
+
+    /// Enable / disable shadow rendering of the container
+    @objc public dynamic var shadowEnabled: Bool {
+        get { return shadowContainer.layer.shadowRadius > 0 }
+        set { shadowContainer.layer.shadowRadius = newValue ? shadowRadius : 0 }
+    }
+
+    /// Color of the container shadow
+    @objc public dynamic var shadowColor: UIColor? {
+        get {
+            guard let color = shadowContainer.layer.shadowColor else {
+                return nil
+            }
+            return UIColor(cgColor: color)
+        }
+        set { shadowContainer.layer.shadowColor = newValue?.cgColor }
+    }
+    
+    /// Radius of the container shadow
+    @objc public dynamic var shadowRadius: CGFloat {
+        get { return shadowContainer.layer.shadowRadius }
+        set { shadowContainer.layer.shadowRadius = newValue }
+    }
+    
+    /// Opacity of the the container shadow
+    @objc public dynamic var shadowOpacity: Float {
+        get { return shadowContainer.layer.shadowOpacity }
+        set { shadowContainer.layer.shadowOpacity = newValue }
+    }
+    
+    /// Offset of the the container shadow
+    @objc public dynamic var shadowOffset: CGSize {
+        get { return shadowContainer.layer.shadowOffset }
+        set { shadowContainer.layer.shadowOffset = newValue }
+    }
+    
+    /// Path of the the container shadow
+    @objc public dynamic var shadowPath: CGPath? {
+        get { return shadowContainer.layer.shadowPath}
+        set { shadowContainer.layer.shadowPath = newValue }
+    }
+    
+    // MARK: - Views
+
+    /// The shadow container is the basic view of the PopupDialog
+    /// As it does not clip subviews, a shadow can be applied to it
+    internal lazy var shadowContainer: UIView = {
+        let shadowContainer = UIView(frame: .zero)
+        shadowContainer.translatesAutoresizingMaskIntoConstraints = false
+        shadowContainer.backgroundColor = UIColor.clear
+        shadowContainer.layer.shadowColor = UIColor.black.cgColor
+        shadowContainer.layer.shadowRadius = 5
+        shadowContainer.layer.shadowOpacity = 0.4
+        shadowContainer.layer.shadowOffset = CGSize(width: 0, height: 0)
+        shadowContainer.layer.cornerRadius = 4
+        return shadowContainer
+    }()
+
+    /// The container view is a child of shadowContainer and contains
+    /// all other views. It clips to bounds so cornerRadius can be set
+    internal lazy var container: UIView = {
+        let container = UIView(frame: .zero)
+        container.translatesAutoresizingMaskIntoConstraints = false
+        container.backgroundColor = UIColor.white
+        container.clipsToBounds = true
+        container.layer.cornerRadius = 4
+        return container
+    }()
+
+    // The container stack view for buttons
+    internal lazy var buttonStackView: UIStackView = {
+        let buttonStackView = UIStackView()
+        buttonStackView.translatesAutoresizingMaskIntoConstraints = false
+        buttonStackView.distribution = .fillEqually
+        buttonStackView.spacing = 0
+        return buttonStackView
+    }()
+
+    // The main stack view, containing all relevant views
+    internal lazy var stackView: UIStackView = {
+        let stackView = UIStackView(arrangedSubviews: [self.buttonStackView])
+        stackView.translatesAutoresizingMaskIntoConstraints = false
+        stackView.axis = .vertical
+        stackView.spacing = 0
+        return stackView
+    }()
+    
+    // The preferred width for iPads
+    fileprivate let preferredWidth: CGFloat
+
+    // MARK: - Constraints
+
+    /// The center constraint of the shadow container
+    internal var centerYConstraint: NSLayoutConstraint?
+
+    // MARK: - Initializers
+    
+    internal init(frame: CGRect, preferredWidth: CGFloat) {
+        self.preferredWidth = preferredWidth
+        super.init(frame: frame)
+        setupViews()
+    }
+
+    required public init?(coder aDecoder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+
+    // MARK: - View setup
+
+    internal func setupViews() {
+
+        // Add views
+        addSubview(shadowContainer)
+        shadowContainer.addSubview(container)
+        container.addSubview(stackView)
+
+        // Layout views
+        let views = ["shadowContainer": shadowContainer, "container": container, "stackView": stackView]
+        var constraints = [NSLayoutConstraint]()
+
+        // Shadow container constraints
+        if UIDevice.current.userInterfaceIdiom == UIUserInterfaceIdiom.pad {
+            let metrics = ["preferredWidth": preferredWidth]
+            constraints += NSLayoutConstraint.constraints(withVisualFormat: "H:|-(>=40)-[shadowContainer(==preferredWidth@900)]-(>=40)-|", options: [], metrics: metrics, views: views)
+        } else {
+            constraints += NSLayoutConstraint.constraints(withVisualFormat: "H:|-(>=10,==20@900)-[shadowContainer(<=340,>=300)]-(>=10,==20@900)-|", options: [], metrics: nil, views: views)
+        }
+        constraints += [NSLayoutConstraint(item: shadowContainer, attribute: .centerX, relatedBy: .equal, toItem: self, attribute: .centerX, multiplier: 1, constant: 0)]
+        centerYConstraint = NSLayoutConstraint(item: shadowContainer, attribute: .centerY, relatedBy: .equal, toItem: self, attribute: .centerY, multiplier: 1, constant: 0)
+        
+        if let centerYConstraint = centerYConstraint {
+            constraints.append(centerYConstraint)
+        }
+        
+        // Container constraints
+        constraints += NSLayoutConstraint.constraints(withVisualFormat: "H:|[container]|", options: [], metrics: nil, views: views)
+        constraints += NSLayoutConstraint.constraints(withVisualFormat: "V:|[container]|", options: [], metrics: nil, views: views)
+
+        // Main stack view constraints
+        constraints += NSLayoutConstraint.constraints(withVisualFormat: "H:|[stackView]|", options: [], metrics: nil, views: views)
+        constraints += NSLayoutConstraint.constraints(withVisualFormat: "V:|[stackView]|", options: [], metrics: nil, views: views)
+
+        // Activate constraints
+        NSLayoutConstraint.activate(constraints)
+    }
+}

Examples/SimpleVideoTransition/SimpleVideoTransition/Vender/PopupDialog/PopupDialogDefaultButtons.swift

@@ -0,0 +1,54 @@
+//
+//  PopupDialogDefaultButtons.swift
+//
+//  Copyright (c) 2016 Orderella Ltd. (http://orderella.co.uk)
+//  Author - Martin Wildfeuer (http://www.mwfire.de)
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+//
+
+import Foundation
+import UIKit
+
+// MARK: Default button
+
+/// Represents the default button for the popup dialog
+public final class DefaultButton: PopupDialogButton {}
+
+// MARK: Cancel button
+
+/// Represents a cancel button for the popup dialog
+public final class CancelButton: PopupDialogButton {
+
+    override public func setupView() {
+        defaultTitleColor = UIColor.lightGray
+        super.setupView()
+    }
+}
+
+// MARK: destructive button
+
+/// Represents a destructive button for the popup dialog
+public final class DestructiveButton: PopupDialogButton {
+
+    override public func setupView() {
+        defaultTitleColor = UIColor.red
+        super.setupView()
+    }
+}

Examples/SimpleVideoTransition/SimpleVideoTransition/Vender/PopupDialog/PopupDialogDefaultView.swift

@@ -0,0 +1,148 @@
+//
+//  PopupDialogView.swift
+//
+//  Copyright (c) 2016 Orderella Ltd. (http://orderella.co.uk)
+//  Author - Martin Wildfeuer (http://www.mwfire.de)
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+//
+
+import Foundation
+import UIKit
+
+/// The main view of the popup dialog
+final public class PopupDialogDefaultView: UIView {
+
+    // MARK: - Appearance
+
+    /// The font and size of the title label
+    @objc public dynamic var titleFont: UIFont {
+        get { return titleLabel.font }
+        set { titleLabel.font = newValue }
+    }
+
+    /// The color of the title label
+    @objc public dynamic var titleColor: UIColor? {
+        get { return titleLabel.textColor }
+        set { titleLabel.textColor = newValue }
+    }
+
+    /// The text alignment of the title label
+    @objc public dynamic var titleTextAlignment: NSTextAlignment {
+        get { return titleLabel.textAlignment }
+        set { titleLabel.textAlignment = newValue }
+    }
+
+    /// The font and size of the body label
+    @objc public dynamic var messageFont: UIFont {
+        get { return messageLabel.font }
+        set { messageLabel.font = newValue }
+    }
+
+    /// The color of the message label
+    @objc public dynamic var messageColor: UIColor? {
+        get { return messageLabel.textColor }
+        set { messageLabel.textColor = newValue}
+    }
+
+    /// The text alignment of the message label
+    @objc public dynamic var messageTextAlignment: NSTextAlignment {
+        get { return messageLabel.textAlignment }
+        set { messageLabel.textAlignment = newValue }
+    }
+
+    // MARK: - Views
+
+    /// The view that will contain the image, if set
+    internal lazy var imageView: UIImageView = {
+        let imageView = UIImageView(frame: .zero)
+        imageView.translatesAutoresizingMaskIntoConstraints = false
+        imageView.contentMode = .scaleAspectFill
+        imageView.clipsToBounds = true
+        return imageView
+    }()
+
+    /// The title label of the dialog
+    internal lazy var titleLabel: UILabel = {
+        let titleLabel = UILabel(frame: .zero)
+        titleLabel.translatesAutoresizingMaskIntoConstraints = false
+        titleLabel.numberOfLines = 0
+        titleLabel.textAlignment = .center
+        titleLabel.textColor = UIColor(white: 0.4, alpha: 1)
+        titleLabel.font = .boldSystemFont(ofSize: 14)
+        return titleLabel
+    }()
+
+    /// The message label of the dialog
+    internal lazy var messageLabel: UILabel = {
+        let messageLabel = UILabel(frame: .zero)
+        messageLabel.translatesAutoresizingMaskIntoConstraints = false
+        messageLabel.numberOfLines = 0
+        messageLabel.textAlignment = .center
+        messageLabel.textColor = UIColor(white: 0.6, alpha: 1)
+        messageLabel.font = .systemFont(ofSize: 14)
+        return messageLabel
+    }()
+    
+    /// The height constraint of the image view, 0 by default
+    internal var imageHeightConstraint: NSLayoutConstraint?
+
+    // MARK: - Initializers
+
+    internal override init(frame: CGRect) {
+        super.init(frame: frame)
+        setupViews()
+    }
+
+    required public init?(coder aDecoder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+
+    // MARK: - View setup
+
+    internal func setupViews() {
+
+        // Self setup
+        translatesAutoresizingMaskIntoConstraints = false
+
+        // Add views
+        addSubview(imageView)
+        addSubview(titleLabel)
+        addSubview(messageLabel)
+
+        // Layout views
+        let views = ["imageView": imageView, "titleLabel": titleLabel, "messageLabel": messageLabel] as [String: Any]
+        var constraints = [NSLayoutConstraint]()
+
+        constraints += NSLayoutConstraint.constraints(withVisualFormat: "H:|[imageView]|", options: [], metrics: nil, views: views)
+        constraints += NSLayoutConstraint.constraints(withVisualFormat: "H:|-(==20@900)-[titleLabel]-(==20@900)-|", options: [], metrics: nil, views: views)
+        constraints += NSLayoutConstraint.constraints(withVisualFormat: "H:|-(==20@900)-[messageLabel]-(==20@900)-|", options: [], metrics: nil, views: views)
+        constraints += NSLayoutConstraint.constraints(withVisualFormat: "V:|[imageView]-(==30@900)-[titleLabel]-(==8@900)-[messageLabel]-(==30@900)-|", options: [], metrics: nil, views: views)
+        
+        // ImageView height constraint
+        imageHeightConstraint = NSLayoutConstraint(item: imageView, attribute: .height, relatedBy: .equal, toItem: imageView, attribute: .height, multiplier: 0, constant: 0)
+        
+        if let imageHeightConstraint = imageHeightConstraint {
+            constraints.append(imageHeightConstraint)
+        }
+
+        // Activate constraints
+        NSLayoutConstraint.activate(constraints)
+    }
+}

Examples/SimpleVideoTransition/SimpleVideoTransition/Vender/PopupDialog/PopupDialogDefaultViewController.swift

@@ -0,0 +1,133 @@
+//
+//  PopupDialogDefaultViewController.swift
+//
+//  Copyright (c) 2016 Orderella Ltd. (http://orderella.co.uk)
+//  Author - Martin Wildfeuer (http://www.mwfire.de)
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+//
+
+import UIKit
+
+final public class PopupDialogDefaultViewController: UIViewController {
+
+    public var standardView: PopupDialogDefaultView {
+       return view as! PopupDialogDefaultView // swiftlint:disable:this force_cast
+    }
+
+    override public func loadView() {
+        super.loadView()
+        view = PopupDialogDefaultView(frame: .zero)
+    }
+}
+
+public extension PopupDialogDefaultViewController {
+
+    // MARK: - Setter / Getter
+
+    // MARK: Content
+
+    /// The dialog image
+    var image: UIImage? {
+        get { return standardView.imageView.image }
+        set {
+            standardView.imageView.image = newValue
+            standardView.imageHeightConstraint?.constant = standardView.imageView.pv_heightForImageView()
+        }
+    }
+
+    /// The title text of the dialog
+    var titleText: String? {
+        get { return standardView.titleLabel.text }
+        set {
+            standardView.titleLabel.text = newValue
+            standardView.pv_layoutIfNeededAnimated()
+        }
+    }
+
+    /// The message text of the dialog
+    var messageText: String? {
+        get { return standardView.messageLabel.text }
+        set {
+            standardView.messageLabel.text = newValue
+            standardView.pv_layoutIfNeededAnimated()
+        }
+    }
+
+    // MARK: Appearance
+
+    /// The font and size of the title label
+    @objc dynamic var titleFont: UIFont {
+        get { return standardView.titleFont }
+        set {
+            standardView.titleFont = newValue
+            standardView.pv_layoutIfNeededAnimated()
+        }
+    }
+
+    /// The color of the title label
+    @objc dynamic var titleColor: UIColor? {
+        get { return standardView.titleLabel.textColor }
+        set {
+            standardView.titleColor = newValue
+            standardView.pv_layoutIfNeededAnimated()
+        }
+    }
+
+    /// The text alignment of the title label
+    @objc dynamic var titleTextAlignment: NSTextAlignment {
+        get { return standardView.titleTextAlignment }
+        set {
+            standardView.titleTextAlignment = newValue
+            standardView.pv_layoutIfNeededAnimated()
+        }
+    }
+
+    /// The font and size of the body label
+    @objc dynamic var messageFont: UIFont {
+        get { return standardView.messageFont}
+        set {
+            standardView.messageFont = newValue
+            standardView.pv_layoutIfNeededAnimated()
+        }
+    }
+
+    /// The color of the message label
+    @objc dynamic var messageColor: UIColor? {
+        get { return standardView.messageColor }
+        set {
+            standardView.messageColor = newValue
+            standardView.pv_layoutIfNeededAnimated()
+        }
+    }
+
+    /// The text alignment of the message label
+    @objc dynamic var messageTextAlignment: NSTextAlignment {
+        get { return standardView.messageTextAlignment }
+        set {
+            standardView.messageTextAlignment = newValue
+            standardView.pv_layoutIfNeededAnimated()
+        }
+    }
+    
+    override func viewDidLayoutSubviews() {
+        super.viewDidLayoutSubviews()
+        standardView.imageHeightConstraint?.constant = standardView.imageView.pv_heightForImageView()
+    }
+}

Examples/SimpleVideoTransition/SimpleVideoTransition/Vender/PopupDialog/PopupDialogOverlayView.swift

@@ -0,0 +1,127 @@
+//
+//  PopupDialogOverlayView.swift
+//
+//  Copyright (c) 2016 Orderella Ltd. (http://orderella.co.uk)
+//  Author - Martin Wildfeuer (http://www.mwfire.de)
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+//
+
+import Foundation
+
+/// The (blurred) overlay view below the popup dialog
+final public class PopupDialogOverlayView: UIView {
+
+    // MARK: - Appearance
+
+    /// Turns the blur of the overlay view on or off
+    @objc public dynamic var blurEnabled: Bool {
+        get { return !blurView.isHidden }
+        set { blurView.isHidden = !newValue }
+    }
+    
+    /// The blur radius of the overlay view
+    @objc public dynamic var blurRadius: CGFloat {
+        get { return blurView.blurRadius }
+        set { blurView.blurRadius = newValue }
+    }
+    
+    /// Whether the blur view should allow for
+    /// live rendering of the background
+    @objc public dynamic var liveBlurEnabled: Bool {
+        get { return blurView.trackingMode == .common }
+        set {
+            if newValue {
+                blurView.trackingMode = .common
+            } else {
+                blurView.trackingMode = .none
+            }
+        }
+    }
+    
+    /// The background color of the overlay view
+    @objc public dynamic var color: UIColor? {
+        get { return overlay.backgroundColor }
+        set { overlay.backgroundColor = newValue }
+    }
+
+    /// The opacity of the overlay view
+    @objc public dynamic var opacity: CGFloat {
+        get { return overlay.alpha }
+        set { overlay.alpha = newValue }
+    }
+
+    // MARK: - Views
+
+    internal lazy var blurView: DynamicBlurView = {
+        let blurView = DynamicBlurView(frame: .zero)
+        blurView.blurRadius = 8
+        blurView.trackingMode = .none
+        blurView.isDeepRendering = true
+        blurView.tintColor = .clear
+        blurView.autoresizingMask = [.flexibleHeight, .flexibleWidth]
+        return blurView
+    }()
+
+    internal lazy var overlay: UIView = {
+        let overlay = UIView(frame: .zero)
+        overlay.backgroundColor = .black
+        overlay.alpha = 0.7
+        overlay.autoresizingMask = [.flexibleHeight, .flexibleWidth]
+        return overlay
+    }()
+
+    // MARK: - Inititalizers
+
+    override init(frame: CGRect) {
+        super.init(frame: frame)
+        setupView()
+    }
+
+    required public init?(coder aDecoder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+
+    // MARK: - View setup
+
+    fileprivate func setupView() {
+
+        autoresizingMask = [.flexibleHeight, .flexibleWidth]
+        backgroundColor = .clear
+        alpha = 0
+
+        addSubview(blurView)
+        addSubview(overlay)
+    }
+
+}
+
+// MARK: - Deprecated
+
+extension PopupDialogOverlayView {
+    
+    /// Whether the blur view should allow for
+    /// dynamic rendering of the background
+    @available(*, deprecated, message: "liveBlur has been deprecated and will be removed with future versions of PopupDialog. Please use isLiveBlurEnabled instead.")
+    @objc public dynamic var liveBlur: Bool {
+        get { return liveBlurEnabled }
+        set { liveBlurEnabled = newValue }
+    }
+    
+}

Examples/SimpleVideoTransition/SimpleVideoTransition/Vender/PopupDialog/PresentationController.swift

@@ -0,0 +1,61 @@
+//
+//  PopupDialogPresentationController.swift
+//
+//  Copyright (c) 2016 Orderella Ltd. (http://orderella.co.uk)
+//  Author - Martin Wildfeuer (http://www.mwfire.de)
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+//
+
+import Foundation
+import UIKit
+
+final internal class PresentationController: UIPresentationController {
+
+    private lazy var overlay: PopupDialogOverlayView = {
+        return PopupDialogOverlayView(frame: .zero)
+    }()
+
+    override func presentationTransitionWillBegin() {
+        
+        guard let containerView = containerView else { return }
+        
+        overlay.frame = containerView.bounds
+        containerView.insertSubview(overlay, at: 0)
+
+        presentedViewController.transitionCoordinator?.animate(alongsideTransition: { [weak self] _ in
+            self?.overlay.alpha = 1.0
+        }, completion: nil)
+    }
+
+    override func dismissalTransitionWillBegin() {
+        presentedViewController.transitionCoordinator?.animate(alongsideTransition: { [weak self] _ in
+            self?.overlay.alpha = 0.0
+        }, completion: nil)
+    }
+
+    override func containerViewWillLayoutSubviews() {
+
+        guard let presentedView = presentedView else { return }
+
+        presentedView.frame = frameOfPresentedViewInContainerView
+        overlay.blurView.refresh()
+    }
+
+}

Examples/SimpleVideoTransition/SimpleVideoTransition/Vender/PopupDialog/PresentationManager.swift

@@ -0,0 +1,86 @@
+//
+//  PopupDialogPresentationManager.swift
+//
+//  Copyright (c) 2016 Orderella Ltd. (http://orderella.co.uk)
+//  Author - Martin Wildfeuer (http://www.mwfire.de)
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+//
+
+import Foundation
+import UIKit
+
+final internal class PresentationManager: NSObject, UIViewControllerTransitioningDelegate {
+
+    var transitionStyle: PopupDialogTransitionStyle
+    var interactor: InteractiveTransition
+
+    init(transitionStyle: PopupDialogTransitionStyle, interactor: InteractiveTransition) {
+        self.transitionStyle = transitionStyle
+        self.interactor = interactor
+        super.init()
+    }
+
+    func presentationController(forPresented presented: UIViewController, presenting: UIViewController?, source: UIViewController) -> UIPresentationController? {
+        let presentationController = PresentationController(presentedViewController: presented, presenting: source)
+        return presentationController
+    }
+
+    func animationController(forPresented presented: UIViewController, presenting: UIViewController, source: UIViewController) -> UIViewControllerAnimatedTransitioning? {
+
+        var transition: TransitionAnimator
+        switch transitionStyle {
+        case .bounceUp:
+            transition = BounceUpTransition(direction: .in)
+        case .bounceDown:
+            transition = BounceDownTransition(direction: .in)
+        case .zoomIn:
+            transition = ZoomTransition(direction: .in)
+        case .fadeIn:
+            transition = FadeTransition(direction: .in)
+        }
+
+        return transition
+    }
+
+    func animationController(forDismissed dismissed: UIViewController) -> UIViewControllerAnimatedTransitioning? {
+
+        if interactor.hasStarted || interactor.shouldFinish {
+            return DismissInteractiveTransition()
+        }
+
+        var transition: TransitionAnimator
+        switch transitionStyle {
+        case .bounceUp:
+            transition = BounceUpTransition(direction: .out)
+        case .bounceDown:
+            transition = BounceDownTransition(direction: .out)
+        case .zoomIn:
+            transition = ZoomTransition(direction: .out)
+        case .fadeIn:
+            transition = FadeTransition(direction: .out)
+        }
+
+        return transition
+    }
+
+    func interactionControllerForDismissal(using animator: UIViewControllerAnimatedTransitioning) -> UIViewControllerInteractiveTransitioning? {
+        return interactor.hasStarted ? interactor : nil
+    }
+}

Examples/SimpleVideoTransition/SimpleVideoTransition/Vender/PopupDialog/TransitionAnimations.swift

@@ -0,0 +1,186 @@
+//
+//  PopupDialogTransitionAnimations.swift
+//
+//  Copyright (c) 2016 Orderella Ltd. (http://orderella.co.uk)
+//  Author - Martin Wildfeuer (http://www.mwfire.de)
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+//
+
+import Foundation
+import UIKit
+
+/*!
+ Presentation transition styles for the popup dialog
+
+ - BounceUp:   Dialog bounces in from bottom and is dismissed to bottom
+ - BounceDown: Dialog bounces in from top and is dismissed to top
+ - ZoomIn:     Dialog zooms in and is dismissed by zooming out
+ - FadeIn:     Dialog fades in and is dismissed by fading out
+ */
+@objc public enum PopupDialogTransitionStyle: Int {
+    case bounceUp
+    case bounceDown
+    case zoomIn
+    case fadeIn
+}
+
+/// Dialog bounces in from bottom and is dismissed to bottom
+final internal class BounceUpTransition: TransitionAnimator {
+
+    init(direction: AnimationDirection) {
+        super.init(inDuration: 0.22, outDuration: 0.2, direction: direction)
+    }
+
+    override func animateTransition(using transitionContext: UIViewControllerContextTransitioning) {
+        super.animateTransition(using: transitionContext)
+
+        switch direction {
+        case .in:
+            to.view.bounds.origin = CGPoint(x: 0, y: -from.view.bounds.size.height)
+            UIView.animate(withDuration: 0.6, delay: 0.0, usingSpringWithDamping: 0.6, initialSpringVelocity: 0, options: [.curveEaseOut], animations: { [weak self] in
+                guard let self = self else { return }
+                self.to.view.bounds = self.from.view.bounds
+            }, completion: { _ in
+                transitionContext.completeTransition(true)
+            })
+        case .out:
+            UIView.animate(withDuration: outDuration, delay: 0.0, options: [.curveEaseIn], animations: { [weak self] in
+                guard let self = self else { return }
+                self.from.view.bounds.origin = CGPoint(x: 0, y: -self.from.view.bounds.size.height)
+                self.from.view.alpha = 0.0
+            }, completion: { _ in
+                transitionContext.completeTransition(!transitionContext.transitionWasCancelled)
+            })
+        }
+    }
+}
+
+
+/// Dialog bounces in from top and is dismissed to top
+final internal class BounceDownTransition: TransitionAnimator {
+
+    init(direction: AnimationDirection) {
+        super.init(inDuration: 0.22, outDuration: 0.2, direction: direction)
+    }
+
+    override func animateTransition(using transitionContext: UIViewControllerContextTransitioning) {
+        super.animateTransition(using: transitionContext)
+
+        switch direction {
+        case .in:
+            to.view.bounds.origin = CGPoint(x: 0, y: from.view.bounds.size.height)
+            UIView.animate(withDuration: 0.6, delay: 0.0, usingSpringWithDamping: 0.6, initialSpringVelocity: 0, options: [.curveEaseOut], animations: { [weak self] in
+                guard let self = self else { return }
+                self.to.view.bounds = self.from.view.bounds
+            }, completion: { _ in
+                transitionContext.completeTransition(true)
+            })
+        case .out:
+            UIView.animate(withDuration: outDuration, delay: 0.0, options: [.curveEaseIn], animations: { [weak self] in
+                guard let self = self else { return }
+                self.from.view.bounds.origin = CGPoint(x: 0, y: self.from.view.bounds.size.height)
+                self.from.view.alpha = 0.0
+            }, completion: { _ in
+                transitionContext.completeTransition(!transitionContext.transitionWasCancelled)
+            })
+        }
+    }
+}
+
+/// Dialog zooms in and is dismissed by zooming out
+final internal class ZoomTransition: TransitionAnimator {
+
+    init(direction: AnimationDirection) {
+        super.init(inDuration: 0.22, outDuration: 0.2, direction: direction)
+    }
+
+    override func animateTransition(using transitionContext: UIViewControllerContextTransitioning) {
+        super.animateTransition(using: transitionContext)
+
+        switch direction {
+        case .in:
+            to.view.transform = CGAffineTransform(scaleX: 0.1, y: 0.1)
+            UIView.animate(withDuration: 0.6, delay: 0.0, usingSpringWithDamping: 0.6, initialSpringVelocity: 0, options: [.curveEaseOut], animations: { [weak self] in
+                guard let self = self else { return }
+                self.to.view.transform = CGAffineTransform(scaleX: 1, y: 1)
+            }, completion: { _ in
+                transitionContext.completeTransition(true)
+            })
+        case .out:
+            UIView.animate(withDuration: outDuration, delay: 0.0, options: [.curveEaseIn], animations: { [weak self] in
+                guard let self = self else { return }
+                self.from.view.transform = CGAffineTransform(scaleX: 0.1, y: 0.1)
+                self.from.view.alpha = 0.0
+            }, completion: { _ in
+                transitionContext.completeTransition(!transitionContext.transitionWasCancelled)
+            })
+        }
+    }
+}
+
+/// Dialog fades in and is dismissed by fading out
+final internal class FadeTransition: TransitionAnimator {
+
+    init(direction: AnimationDirection) {
+        super.init(inDuration: 0.22, outDuration: 0.2, direction: direction)
+    }
+
+    override func animateTransition(using transitionContext: UIViewControllerContextTransitioning) {
+        super.animateTransition(using: transitionContext)
+
+        switch direction {
+        case .in:
+            to.view.alpha = 0
+            UIView.animate(withDuration: 0.6, delay: 0.0, options: [.curveEaseOut],
+            animations: { [weak self] in
+                guard let self = self else { return }
+                self.to.view.alpha = 1
+            }, completion: { _ in
+                transitionContext.completeTransition(true)
+            })
+        case .out:
+            UIView.animate(withDuration: outDuration, delay: 0.0, options: [.curveEaseIn], animations: { [weak self] in
+                guard let self = self else { return }
+                self.from.view.alpha = 0.0
+            }, completion: { _ in
+                transitionContext.completeTransition(!transitionContext.transitionWasCancelled)
+            })
+        }
+    }
+}
+
+/// Used for the always drop out animation with pan gesture dismissal
+final internal class DismissInteractiveTransition: TransitionAnimator {
+
+    init() {
+        super.init(inDuration: 0.22, outDuration: 0.32, direction: .out)
+    }
+
+    override func animateTransition(using transitionContext: UIViewControllerContextTransitioning) {
+        super.animateTransition(using: transitionContext)
+        UIView.animate(withDuration: outDuration, delay: 0.0, options: [.beginFromCurrentState], animations: { [weak self] in
+            guard let self = self else { return }
+            self.from.view.bounds.origin = CGPoint(x: 0, y: -self.from.view.bounds.size.height)
+            self.from.view.alpha = 0.0
+        }, completion: { _ in
+            transitionContext.completeTransition(!transitionContext.transitionWasCancelled)
+        })
+    }
+}

Examples/SimpleVideoTransition/SimpleVideoTransition/Vender/PopupDialog/TransitionAnimator.swift

@@ -0,0 +1,68 @@
+//
+//  PopupDialogTransitionAnimator.swift
+//
+//  Copyright (c) 2016 Orderella Ltd. (http://orderella.co.uk)
+//  Author - Martin Wildfeuer (http://www.mwfire.de)
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+//
+
+import Foundation
+import UIKit
+
+/// Base class for custom transition animations
+internal class TransitionAnimator: NSObject, UIViewControllerAnimatedTransitioning {
+
+    var to: UIViewController!
+    var from: UIViewController!
+    let inDuration: TimeInterval
+    let outDuration: TimeInterval
+    let direction: AnimationDirection
+
+    init(inDuration: TimeInterval, outDuration: TimeInterval, direction: AnimationDirection) {
+        self.inDuration = inDuration
+        self.outDuration = outDuration
+        self.direction = direction
+        super.init()
+    }
+
+    internal func transitionDuration(using transitionContext: UIViewControllerContextTransitioning?) -> TimeInterval {
+        return direction == .in ? inDuration : outDuration
+    }
+
+    internal func animateTransition(using transitionContext: UIViewControllerContextTransitioning) {
+        switch direction {
+        case .in:
+            guard let to = transitionContext.viewController(forKey: UITransitionContextViewControllerKey.to),
+                let from = transitionContext.viewController(forKey: UITransitionContextViewControllerKey.from) else { return }
+            
+            self.to = to
+            self.from = from
+
+            let container = transitionContext.containerView
+            container.addSubview(to.view)
+        case .out:
+            guard let to = transitionContext.viewController(forKey: UITransitionContextViewControllerKey.to),
+                let from = transitionContext.viewController(forKey: UITransitionContextViewControllerKey.from) else { return }
+            
+            self.to = to
+            self.from = from
+        }
+    }
+}

Examples/SimpleVideoTransition/SimpleVideoTransition/Vender/PopupDialog/UIImageView+Calculations.swift

@@ -0,0 +1,44 @@
+//
+//  UIImageView+Calculations.swift
+//
+//  Copyright (c) 2016 Orderella Ltd. (http://orderella.co.uk)
+//  Author - Martin Wildfeuer (http://www.mwfire.de)
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+//
+
+import Foundation
+import UIKit
+
+internal extension UIImageView {
+
+    /*!
+     Calculates the height of the the UIImageView has to
+     have so the image is displayed correctly
+     - returns: Height to set on the imageView
+     */
+    func pv_heightForImageView() -> CGFloat {
+        guard let image = image, image.size.height > 0 else {
+            return 0.0
+        }
+        let width = bounds.size.width
+        let ratio = image.size.height / image.size.width
+        return width * ratio
+    }
+}

Examples/SimpleVideoTransition/SimpleVideoTransition/Vender/PopupDialog/UIView+Animations.swift

@@ -0,0 +1,82 @@
+//
+//  UIView+Animations.swift
+//
+//  Copyright (c) 2016 Orderella Ltd. (http://orderella.co.uk)
+//  Author - Martin Wildfeuer (http://www.mwfire.de)
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+//
+
+import Foundation
+import UIKit
+
+/*!
+ The intended direction of the animation
+ - in:  Animate in
+ - out: Animate out
+ */
+internal enum AnimationDirection {
+    case `in` // swiftlint:disable:this identifier_name
+    case out
+}
+
+internal extension UIView {
+
+    /// The key for the fade animation
+    var fadeKey: String { return "FadeAnimation" }
+    var shakeKey: String { return "ShakeAnimation" }
+
+    func pv_fade(_ direction: AnimationDirection, _ value: Float, duration: CFTimeInterval = 0.08) {
+        layer.removeAnimation(forKey: fadeKey)
+        let animation = CABasicAnimation(keyPath: "opacity")
+        animation.duration = duration
+        animation.fromValue = layer.presentation()?.opacity
+        layer.opacity = value
+        animation.fillMode = CAMediaTimingFillMode.forwards
+        layer.add(animation, forKey: fadeKey)
+    }
+
+    func pv_layoutIfNeededAnimated(duration: CFTimeInterval = 0.08) {
+        UIView.animate(withDuration: duration, delay: 0, options: UIView.AnimationOptions(), animations: {
+            self.layoutIfNeeded()
+        }, completion: nil)
+    }
+    
+    // As found at https://gist.github.com/mourad-brahim/cf0bfe9bec5f33a6ea66#file-uiview-animations-swift-L9
+    // Slightly modified
+    func pv_shake() {
+        layer.removeAnimation(forKey: shakeKey)
+        let vals: [Double] = [-2, 2, -2, 2, 0]
+        
+        let translation = CAKeyframeAnimation(keyPath: "transform.translation.x")
+        translation.timingFunction = CAMediaTimingFunction(name: CAMediaTimingFunctionName.linear)
+        translation.values = vals
+        
+        let rotation = CAKeyframeAnimation(keyPath: "transform.rotation.z")
+        rotation.values = vals.map { (degrees: Double) in
+            let radians: Double = (Double.pi * degrees) / 180.0
+            return radians
+        }
+        
+        let shakeGroup: CAAnimationGroup = CAAnimationGroup()
+        shakeGroup.animations = [translation, rotation]
+        shakeGroup.duration = 0.3
+        self.layer.add(shakeGroup, forKey: shakeKey)
+    }
+}

Examples/SimpleVideoTransition/SimpleVideoTransition/Vender/PopupDialog/UIViewController+Visibility.swift

@@ -0,0 +1,52 @@
+//
+//  UIViewController+Visibility.swift
+//
+//  Copyright (c) 2016 Orderella Ltd. (http://orderella.co.uk)
+//  Author - Martin Wildfeuer (http://www.mwfire.de)
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+//
+
+import Foundation
+import UIKit
+
+// http://stackoverflow.com/questions/2777438/how-to-tell-if-uiviewcontrollers-view-is-visible
+internal extension UIViewController {
+
+    var isTopAndVisible: Bool {
+        return isVisible && isTopViewController
+    }
+
+    var isVisible: Bool {
+        if isViewLoaded {
+            return view.window != nil
+        }
+        return false
+    }
+
+    var isTopViewController: Bool {
+        if self.navigationController != nil {
+            return self.navigationController?.visibleViewController === self
+        } else if self.tabBarController != nil {
+            return self.tabBarController?.selectedViewController == self && self.presentedViewController == nil
+        } else {
+            return self.presentedViewController == nil && self.isVisible
+        }
+    }
+}

Examples/SimpleVideoTransition/SimpleVideoTransition/Vender/TableViewDragger/ScrollRects.swift

@@ -0,0 +1,41 @@
+//
+//  ScrollRects.swift
+//  TableViewDragger
+//
+//  Created by Kyohei Ito on 2017/12/08.
+//  Copyright © 2017年 kyohei_ito. All rights reserved.
+//
+
+import Foundation
+import CoreImage
+
+struct ScrollRects {
+    private let maxDistance: CGFloat = 10
+    private let size: CGSize
+    private let scrollRange: CGFloat
+
+    let topRect: CGRect
+    let bottomRect: CGRect
+
+    init(size: CGSize) {
+        self.size = size
+        scrollRange = size.height / 2.5
+
+        let scrollSize = CGSize(width: size.width, height: scrollRange)
+        topRect = CGRect(origin: .zero, size: scrollSize)
+        bottomRect = CGRect(origin: CGPoint(x: 0, y: size.height - scrollRange), size: scrollSize)
+    }
+
+    func distance(at point: CGPoint) -> CGFloat {
+        let ratio: CGFloat
+        if topRect.contains(point) {
+            ratio = -(scrollRange - point.y)
+        } else if bottomRect.contains(point) {
+            ratio = point.y - (size.height - scrollRange)
+        } else {
+            ratio = 0
+        }
+
+        return max(min(ratio / 30, maxDistance), -maxDistance)
+    }
+}

Examples/SimpleVideoTransition/SimpleVideoTransition/Vender/TableViewDragger/TableViewDragger.swift

@@ -0,0 +1,371 @@
+//
+//  TableViewDragger.swift
+//  TableViewDragger
+//
+//  Created by Kyohei Ito on 2015/09/24.
+//  Copyright © 2015年 kyohei_ito. All rights reserved.
+//
+
+import UIKit
+
+@objc public protocol TableViewDraggerDelegate: class {
+    /// If allow movement of cell, please return `true`. require a call to `moveRowAt:toIndexPath:` of UITableView and rearranged of data.
+    func dragger(_ dragger: TableViewDragger, moveDraggingAt indexPath: IndexPath, newIndexPath: IndexPath) -> Bool
+
+    /// If allow dragging of cell, prease return `true`.
+    @objc optional func dragger(_ dragger: TableViewDragger, shouldDragAt indexPath: IndexPath) -> Bool
+    @objc optional func dragger(_ dragger: TableViewDragger, willBeginDraggingAt indexPath: IndexPath)
+    @objc optional func dragger(_ dragger: TableViewDragger, didBeginDraggingAt indexPath: IndexPath)
+    @objc optional func dragger(_ dragger: TableViewDragger, willEndDraggingAt indexPath: IndexPath)
+    @objc optional func dragger(_ dragger: TableViewDragger, didEndDraggingAt indexPath: IndexPath)
+}
+
+@objc public protocol TableViewDraggerDataSource: class {
+    /// Return any cell if want to change the cell in drag.
+    @objc optional func dragger(_ dragger: TableViewDragger, cellForRowAt indexPath: IndexPath) -> UIView?
+    /// Return the indexPath if want to change the indexPath to start drag.
+    @objc optional func dragger(_ dragger: TableViewDragger, indexPathForDragAt indexPath: IndexPath) -> IndexPath
+}
+
+open class TableViewDragger: NSObject {
+    let longPressGesture = UILongPressGestureRecognizer()
+    let panGesture = UIPanGestureRecognizer()
+    var draggingCell: TableViewDraggerCell?
+    var displayLink: CADisplayLink?
+    var targetClipsToBounds = true
+    weak var targetTableView: UITableView?
+    private var draggingDirection: UIScrollView.DraggingDirection?
+
+    /// It will be `true` if want to hide the original cell.
+    open var isHiddenOriginCell: Bool = true
+    /// Zoom scale of cell in drag.
+    open var zoomScaleForCell: CGFloat = 1
+    /// Alpha of cell in drag.
+    open var alphaForCell: CGFloat = 1
+    /// Opacity of cell shadow in drag.
+    open var opacityForShadowOfCell: Float = 0.4
+    /// Velocity of auto scroll in drag.
+    open var scrollVelocity: CGFloat = 1
+    open weak var delegate: TableViewDraggerDelegate?
+    open weak var dataSource: TableViewDraggerDataSource?
+    //
+    open var availableHorizontalScroll : Bool = true
+    open var tableView: UITableView? {
+        return targetTableView
+    }
+
+    /// `UITableView` want to drag.
+    public init(tableView: UITableView, _ minimumPressDuration: CFTimeInterval = 0.5) {
+        super.init()
+
+        self.targetTableView = tableView
+        tableView.addGestureRecognizer(longPressGesture)
+        tableView.addGestureRecognizer(panGesture)
+
+        longPressGesture.addTarget(self, action: #selector(TableViewDragger.longPressGestureAction(_:)))
+        longPressGesture.delegate = self
+        longPressGesture.allowableMovement = 5.0
+        longPressGesture.minimumPressDuration = minimumPressDuration
+
+        panGesture.addTarget(self, action: #selector(TableViewDragger.panGestureAction(_:)))
+        panGesture.delegate = self
+        panGesture.maximumNumberOfTouches = 1
+    }
+
+    deinit {
+        targetTableView?.removeGestureRecognizer(longPressGesture)
+        targetTableView?.removeGestureRecognizer(panGesture)
+    }
+
+    func targetIndexPath(_ tableView: UITableView, draggingCell: TableViewDraggerCell) -> IndexPath {
+        let location        = draggingCell.location
+        let offsetY         = (draggingCell.viewHeight / 2) + 2
+        let offsetX         = tableView.center.x
+        let topPoint        = CGPoint(x: offsetX, y: location.y - offsetY)
+        let bottomPoint     = CGPoint(x: offsetX, y: location.y + offsetY)
+        let point           = draggingDirection == .up ? topPoint : bottomPoint
+
+        if let targetIndexPath = tableView.indexPathForRow(at: point) {
+            if tableView.cellForRow(at: targetIndexPath) == nil {
+                return draggingCell.dropIndexPath
+            }
+
+            let targetRect = tableView.rectForRow(at: targetIndexPath)
+            let targetCenterY = targetRect.origin.y + (targetRect.height / 2)
+
+            guard let direction = draggingDirection else {
+                return draggingCell.dropIndexPath
+            }
+
+            switch direction {
+            case .up:
+                if (targetCenterY > point.y && draggingCell.dropIndexPath > targetIndexPath) {
+                    return targetIndexPath
+                }
+            case .down:
+                if (targetCenterY < point.y && draggingCell.dropIndexPath < targetIndexPath) {
+                    return targetIndexPath
+                }
+            }
+        } else {
+            let section = (0..<tableView.numberOfSections).filter { section -> Bool in
+                tableView.rect(forSection: section).contains(point)
+            }.first
+
+            if let section = section, tableView.numberOfRows(inSection: section) == 0 {
+                return IndexPath(row: 0, section: section)
+            }
+        }
+
+        return draggingCell.dropIndexPath
+    }
+
+    func dragCell(_ tableView: UITableView, draggingCell: TableViewDraggerCell) {
+        let indexPath = targetIndexPath(tableView, draggingCell: draggingCell)
+        if draggingCell.dropIndexPath.compare(indexPath) == .orderedSame {
+            return
+        }
+
+        if let cell = tableView.cellForRow(at: draggingCell.dropIndexPath) {
+            cell.isHidden = isHiddenOriginCell
+        }
+        if delegate?.dragger(self, moveDraggingAt: draggingCell.dropIndexPath, newIndexPath: indexPath) == true {
+            draggingCell.dropIndexPath = indexPath
+        }
+    }
+
+    func copiedCell(at indexPath: IndexPath) -> UIView? {
+        if let view = dataSource?.dragger?(self, cellForRowAt: indexPath) {
+            return view
+        }
+
+        if let cell = targetTableView?.cellForRow(at: indexPath) {
+            if let view = cell.snapshotView(afterScreenUpdates: false) {
+                return view
+            } else if let view = cell.captured() {
+                view.frame = cell.bounds
+                return view
+            }
+        }
+
+        return nil
+    }
+
+    func draggedCell(_ tableView: UITableView, indexPath: IndexPath) -> TableViewDraggerCell? {
+        guard let copiedCell = copiedCell(at: indexPath) else {
+            return nil
+        }
+
+        let cellRect = tableView.rectForRow(at: indexPath)
+        copiedCell.frame.size = cellRect.size
+
+        if let height = tableView.delegate?.tableView?(tableView, heightForRowAt: indexPath) {
+            copiedCell.frame.size.height = height
+        }
+
+        let cell = TableViewDraggerCell(cell: copiedCell)
+        cell.dragScale = zoomScaleForCell
+        cell.dragAlpha = alphaForCell
+        cell.dragShadowOpacity = opacityForShadowOfCell
+        cell.dropIndexPath = indexPath
+
+        return cell
+    }
+}
+
+// MARK: - Dragging Cell
+extension TableViewDragger {
+    private func draggingDidBegin(_ gesture: UIGestureRecognizer, indexPath: IndexPath) {
+        displayLink?.invalidate()
+        displayLink = UIScreen.main.displayLink(withTarget: self, selector: #selector(TableViewDragger.displayDidRefresh(_:)))
+        displayLink?.add(to: .main, forMode: .default)
+        displayLink?.isPaused = true
+
+        let dragIndexPath = dataSource?.dragger?(self, indexPathForDragAt: indexPath) ?? indexPath
+        delegate?.dragger?(self, willBeginDraggingAt: dragIndexPath)
+
+        if let tableView = targetTableView {
+            let actualCell = tableView.cellForRow(at: dragIndexPath)
+
+            if let draggedCell = draggedCell(tableView, indexPath: dragIndexPath) {
+                let point = gesture.location(in: actualCell)
+                
+                if availableHorizontalScroll == true{
+                    
+                    draggedCell.offset = point
+                    draggedCell.transformToPoint(point)
+                    draggedCell.location = gesture.location(in: tableView)
+                    
+                } else {
+                    
+                    draggedCell.offset = CGPoint(x: (draggedCell.frame.size.width)/2, y: point.y)
+                    draggedCell.transformToPoint(CGPoint(x: (draggedCell.frame.size.width)/2, y: point.y))
+                    draggedCell.location = CGPoint(x: (draggedCell.frame.size.width)/2, y: gesture.location(in: tableView).y)
+                    
+                }
+                
+                tableView.addSubview(draggedCell)
+                draggingCell = draggedCell
+            }
+
+            actualCell?.isHidden = isHiddenOriginCell
+            targetClipsToBounds = tableView.clipsToBounds
+            tableView.clipsToBounds = false
+        }
+
+        delegate?.dragger?(self, didBeginDraggingAt: indexPath)
+    }
+
+    private func draggingDidChange(_ gesture: UIGestureRecognizer, direction: UIScrollView.DraggingDirection?) {
+        guard let tableView = targetTableView, let draggingCell = draggingCell else {
+            return
+        }
+        
+        if availableHorizontalScroll == true{
+            
+            draggingCell.location = gesture.location(in: tableView)
+            
+        } else {
+            
+            draggingCell.location = CGPoint(x: (draggingCell.frame.size.width)/2, y: gesture.location(in: tableView).y)
+        }
+        
+        
+        if let adjustedDirection = tableView.draggingDirection(at: draggingCell.adjustedCenter(on: tableView)) {
+            displayLink?.isPaused = false
+            draggingDirection = adjustedDirection
+        } else {
+            draggingDirection = direction
+        }
+        
+
+        dragCell(tableView, draggingCell: draggingCell)
+    }
+
+    private func draggingDidEnd(_ gesture: UIGestureRecognizer) {
+        displayLink?.invalidate()
+        displayLink = nil
+
+        guard let tableView = targetTableView, let draggingCell = draggingCell else {
+            return
+        }
+
+        delegate?.dragger?(self, willEndDraggingAt: draggingCell.dropIndexPath)
+
+        let targetRect = tableView.rectForRow(at: draggingCell.dropIndexPath)
+        let center = CGPoint(x: targetRect.width / 2, y: targetRect.origin.y + (targetRect.height / 2))
+
+        draggingCell.drop(center) {
+            self.delegate?.dragger?(self, didEndDraggingAt: draggingCell.dropIndexPath)
+
+            if let cell = tableView.cellForRow(at: draggingCell.dropIndexPath) {
+                cell.isHidden = false
+            }
+
+            tableView.clipsToBounds = self.targetClipsToBounds
+
+            self.draggingCell = nil
+        }
+    }
+}
+
+// MARK: - Action Methods
+private extension TableViewDragger {
+    @objc func displayDidRefresh(_ displayLink: CADisplayLink) {
+        guard let tableView = targetTableView, let draggingCell = draggingCell else {
+            return
+        }
+
+        let center = draggingCell.adjustedCenter(on: tableView)
+
+        if let direction = tableView.draggingDirection(at: center) {
+            draggingDirection = direction
+        } else {
+            displayLink.isPaused = true
+        }
+
+        tableView.contentOffset = tableView.preferredContentOffset(at: center, velocity: scrollVelocity)
+
+        dragCell(tableView, draggingCell: draggingCell)
+        
+        if availableHorizontalScroll == true{
+            
+            draggingCell.location = panGesture.location(in: tableView)
+        } else {
+            
+            draggingCell.location = CGPoint(x: draggingCell.frame.size.width/2, y: panGesture.location(in: tableView).y)
+        }
+        
+    }
+
+    @objc func longPressGestureAction(_ gesture: UILongPressGestureRecognizer) {
+        switch gesture.state {
+        case .began:
+            targetTableView?.isScrollEnabled = false
+
+            let point = gesture.location(in: targetTableView)
+            if let path = targetTableView?.indexPathForRow(at: point) {
+                draggingDidBegin(gesture, indexPath: path)
+            }
+        case .ended, .cancelled:
+            draggingDidEnd(gesture)
+
+            targetTableView?.isScrollEnabled = true
+
+        case .changed, .failed, .possible:
+            break
+        @unknown default:
+            return
+        }
+    }
+
+    @objc func panGestureAction(_ gesture: UIPanGestureRecognizer) {
+        guard targetTableView?.isScrollEnabled == false && gesture.state == .changed else {
+            return
+        }
+
+        let offsetY = gesture.translation(in: targetTableView).y
+        if offsetY < 0 {
+            draggingDidChange(gesture, direction: .up)
+        } else if offsetY > 0 {
+            draggingDidChange(gesture, direction: .down)
+        } else {
+            draggingDidChange(gesture, direction: nil)
+        }
+
+        gesture.setTranslation(.zero, in: targetTableView)
+    }
+}
+
+// MARK: - UIGestureRecognizerDelegate Methods
+extension TableViewDragger: UIGestureRecognizerDelegate {
+    public func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldReceive touch: UITouch) -> Bool {
+        if gestureRecognizer == longPressGesture {
+            let point = touch.location(in: targetTableView)
+
+            if let indexPath = targetTableView?.indexPathForRow(at: point) {
+                if let ret = delegate?.dragger?(self, shouldDragAt: indexPath) {
+                    return ret
+                }
+            } else {
+                return false
+            }
+        }
+
+        return true
+    }
+
+    public func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldRecognizeSimultaneouslyWith otherGestureRecognizer: UIGestureRecognizer) -> Bool {
+        return gestureRecognizer == panGesture || otherGestureRecognizer == panGesture || gestureRecognizer == longPressGesture || otherGestureRecognizer == longPressGesture
+    }
+}
+
+extension UIView {
+    fileprivate func captured() -> UIView? {
+        guard let data = try? NSKeyedArchiver.archivedData(withRootObject: self, requiringSecureCoding: false) else {
+            return nil
+        }
+        
+        return try? NSKeyedUnarchiver.unarchivedObject(ofClasses: [UIView.self], from: data) as? UIView
+    }
+}

Examples/SimpleVideoTransition/SimpleVideoTransition/Vender/TableViewDragger/TableViewDraggerCell.swift

@@ -0,0 +1,136 @@
+//
+//  TableViewDraggerCell.swift
+//  TableViewDragger
+//
+//  Created by Kyohei Ito on 2015/09/24.
+//  Copyright © 2015年 kyohei_ito. All rights reserved.
+//
+
+import UIKit
+
+class TableViewDraggerCell: UIScrollView {
+    private let zoomingView: UIView!
+
+    var dragAlpha: CGFloat = 1
+    var dragScale: CGFloat = 1
+    var dragShadowOpacity: Float = 0.4
+
+    var dropIndexPath: IndexPath = IndexPath(index: 0)
+    var offset: CGPoint = CGPoint.zero {
+        didSet {
+            offset.x -= (bounds.width / 2)
+            offset.y -= (bounds.height / 2)
+            center = adjustCenter(location)
+        }
+    }
+    var location: CGPoint = CGPoint.zero {
+        didSet {
+            center = adjustCenter(location)
+        }
+    }
+    var viewHeight: CGFloat {
+        return zoomingView.bounds.height * zoomScale
+    }
+
+    private func adjustCenter(_ center: CGPoint) -> CGPoint {
+        var center = center
+        center.x -= offset.x
+        center.y -= offset.y
+        return center
+    }
+
+    required init?(coder aDecoder: NSCoder) {
+        zoomingView = UIView(frame: .zero)
+        super.init(coder: aDecoder)
+    }
+
+    init(cell: UIView) {
+        zoomingView = UIView(frame: cell.bounds)
+        zoomingView.addSubview(cell)
+
+        super.init(frame: cell.bounds)
+
+        delegate = self
+        clipsToBounds = false
+
+        layer.shadowColor = UIColor.black.cgColor
+        layer.shadowOpacity = 0
+        layer.shadowRadius = 5
+        layer.shadowOffset = .zero
+
+        addSubview(zoomingView)
+    }
+
+    func transformToPoint(_ point: CGPoint) {
+        if dragScale > 1 {
+            maximumZoomScale = dragScale
+        } else {
+            minimumZoomScale = dragScale
+        }
+
+        var center = zoomingView.center
+        center.x -= (center.x * dragScale) - point.x
+        center.y -= (center.y * dragScale) - point.y
+
+        UIView.animate(withDuration: 0.25, delay: 0.1, options: .curveEaseInOut, animations: {
+            self.zoomingView.center = center
+            self.zoomScale = self.dragScale
+            self.alpha = self.dragAlpha
+        }, completion: nil)
+
+        CATransaction.begin()
+        let anim = CABasicAnimation(keyPath: "shadowOpacity")
+        anim.fromValue = 0
+        anim.toValue = dragShadowOpacity
+        anim.duration = 0.1
+        anim.isRemovedOnCompletion = false
+        anim.fillMode = .forwards
+        layer.add(anim, forKey: "cellDragAnimation")
+        CATransaction.commit()
+    }
+
+    func adjustedCenter(on scrollView: UIScrollView) -> CGPoint {
+        var center = location
+        center.y -= scrollView.contentOffset.y
+        center.x = scrollView.center.x
+        return center
+    }
+
+    func drop(_ center: CGPoint, completion: (() -> Void)? = nil) {
+        UIView.animate(withDuration: 0.25) {
+            self.zoomingView.adjustCenterAtRect(self.zoomingView.frame)
+            self.center = center
+            self.zoomScale = 1.0
+            self.alpha = 1.0
+        }
+
+        CATransaction.begin()
+        let anim = CABasicAnimation(keyPath: "shadowOpacity")
+        anim.fromValue = dragShadowOpacity
+        anim.toValue = 0
+        anim.duration = 0.15
+        anim.beginTime = CACurrentMediaTime() + 0.15
+        anim.isRemovedOnCompletion = false
+        anim.fillMode = .forwards
+        CATransaction.setCompletionBlock {
+            self.removeFromSuperview()
+
+            completion?()
+        }
+        layer.add(anim, forKey: "cellDropAnimation")
+        CATransaction.commit()
+    }
+}
+
+extension TableViewDraggerCell: UIScrollViewDelegate {
+    func viewForZooming(in scrollView: UIScrollView) -> UIView? {
+        return zoomingView
+    }
+}
+
+private extension UIView {
+    func adjustCenterAtRect(_ rect: CGRect) {
+        let center = CGPoint(x: rect.size.width / 2, y: rect.size.height / 2)
+        self.center = center
+    }
+}

Examples/SimpleVideoTransition/SimpleVideoTransition/Vender/TableViewDragger/UIScrollViewExtension.swift

@@ -0,0 +1,58 @@
+//
+//  UIScrollViewExtension.swift
+//  Pods
+//
+//  Created by Kyohei Ito on 2015/09/29.
+//
+//
+
+import UIKit
+
+extension UIScrollView {
+    enum DraggingDirection {
+        case up
+        case down
+    }
+
+    func preferredContentOffset(at point: CGPoint, velocity: CGFloat) -> CGPoint {
+        let distance = ScrollRects(size: bounds.size).distance(at: point) / velocity
+        var offset = contentOffset
+        offset.y += distance
+
+        let topOffset = -contentInset.top
+        let bottomOffset = contentInset.bottom
+        let height = floor(contentSize.height) - bounds.size.height
+
+        if offset.y > height + bottomOffset {
+            offset.y = height + bottomOffset
+        } else if offset.y < topOffset {
+            offset.y = topOffset
+        }
+
+        return offset
+    }
+
+    func draggingDirection(at point: @autoclosure () -> CGPoint) -> DraggingDirection? {
+        let contentHeight = floor(contentSize.height)
+        if bounds.size.height >= contentHeight {
+            return nil
+        }
+
+        let rects = ScrollRects(size: bounds.size)
+        let point = point()
+
+        if rects.topRect.contains(point) {
+            let topOffset = -contentInset.top
+            if contentOffset.y > topOffset {
+                return .up
+            }
+        } else if rects.bottomRect.contains(point) {
+            let bottomOffset = contentHeight + contentInset.bottom - bounds.size.height
+            if contentOffset.y < bottomOffset {
+                return .down
+            }
+        }
+
+        return nil
+    }
+}

Examples/SimpleVideoTransition/SimpleVideoTransition/ViewController+MetalVideoProcessPlayerDelegate.swift

@@ -0,0 +1,143 @@
+//
+//  ViewController+MetalVideoProcessPlayerDelegate.swift
+//  SimpleVideoEditor
+//
+//  Created by RenZhu Macro on 2020/7/9.
+//  Copyright © 2020 RenZhu Macro. All rights reserved.
+//
+
+import Foundation
+import MetalVideoProcess
+import AVFoundation
+import AVKit
+
+extension ViewController: MetalVideoProcessPlayerDelegate {
+    func playbackFrameTimeChanged(frameTime time: CMTime, player: AVPlayer) {
+        DispatchQueue.main.async {
+            self.progress.value = Float(time.seconds)
+        }
+    }
+    
+    func playEnded(currentPlayer player: AVPlayer) {
+        
+    }
+    
+    func finishExport(error: NSError?) {
+        DispatchQueue.main.async { [weak self] in
+            guard let `self` = self else { return }
+            if error != nil {
+                MBProgressHUD.hide(for: self.view, animated: true)
+                guard let source = self.movieWriter?.sources.sources[0] else {
+                    return
+                }
+                source.removeAllTargets()
+                source --> self.renderView
+                self.view.isUserInteractionEnabled = true
+                let alertVC = UIAlertController(title: "", message: "导出失败, 请重新尝试", preferredStyle: .alert)
+                
+                let alertBtn = UIAlertAction(title: "确认", style: .cancel) { (_) in
+                    alertVC.dismiss(animated: true, completion: nil)
+                }
+                alertVC.addAction(alertBtn)
+                self.present(alertVC, animated: true) {
+                    
+                }
+                return
+            }
+        }
+        if error != nil {
+            self.view.isUserInteractionEnabled = true
+            return
+        }
+        //这里准备调用writer结束
+        self.movieWriter?.finishRecording({
+            //这里去预览界面播放编辑后的视频
+            DispatchQueue.main.async {
+                MBProgressHUD.hide(for: self.view, animated: true)
+                guard let source = self.movieWriter?.sources.sources[0] else {
+                    return
+                }
+                source.removeAllTargets()
+                source --> self.renderView
+                
+                let playerVC = AVPlayerViewController()
+                playerVC.navigationItem.rightBarButtonItem = UIBarButtonItem(title: "Info", style: .done, target: self, action: #selector(self.showInfo))
+                playerVC.player = AVPlayer.init(url: self.movieWriter!.fileURL)
+                self.present(playerVC, animated: true, completion: nil)
+                self.view.isUserInteractionEnabled = true
+            }
+            
+        })
+    }
+    
+    func exportProgressChanged(_ progress: Float) {
+        DispatchQueue.main.async {
+            self.progressHUD?.progress = progress
+        }
+    }
+    
+    @objc func showInfo() {
+        let data  = NSData(contentsOf: self.movieWriter!.fileURL)
+        guard let size = data?.length else {
+            return
+        }
+        
+        let mSize = Double(size) / (1024 * 1024)
+        let message = NSString(format: "%..2f MB", mSize) as String
+        let alertVC = UIAlertController(title: "Video file size", message: message, preferredStyle: .alert)
+        
+        let alertBtn = UIAlertAction(title: "OK", style: .cancel) { (_) in
+            alertVC.dismiss(animated: true, completion: nil)
+        }
+        alertVC.addAction(alertBtn)
+        self.present(alertVC, animated: true) {
+            
+        }
+    }
+    
+    func initWriter() {
+        self.movieWriter?.removeSourceAtIndex(0)
+        self.movieWriter = nil
+        //导出相关
+        do {
+            let documentsDir = try FileManager.default.url(for:.documentDirectory, in:.userDomainMask, appropriateFor:nil, create:true)
+            let fileURL = URL(string:"test.mp4", relativeTo:documentsDir)!
+            do {
+                try FileManager.default.removeItem(at:fileURL)
+            } catch {
+            }
+            
+            
+            let cgSize = MetalVideoProcessBackground.canvasSize
+            self.movieWriter = try MetalVideoProcessMovieWriter(URL: fileURL,
+                                                                size: Size(width: Float(cgSize.width),
+                                                                           height: Float(cgSize.height)),
+                                                                liveVideo: false)
+            self.player?.audioEncodingTarget = nil
+            self.player?.audioEncodingTarget = self.movieWriter
+            //最后一个输出节点指向writer
+            
+            
+            
+        } catch {
+            
+        }
+    }
+    
+    @IBAction func export(_ sender: Any) {
+           self.progressHUD = MBProgressHUD.showHub(with: .loading("exporting..."), self.view, isUserInteractionEnabled: false)
+           
+           
+           guard let source = self.renderView?.sources.sources[0] else {
+               return
+           }
+           initWriter()
+           source.removeAllTargets()
+           source --> self.movieWriter!
+           self.view.isUserInteractionEnabled = false
+           
+           try? self.player?.startExport()
+           self.movieWriter?.activateAudioTrack()
+           self.movieWriter?.startRecording()
+       }
+}

Examples/SimpleVideoTransition/SimpleVideoTransition/ViewController+UIGestureRecognizerDelegate.swift

@@ -0,0 +1,71 @@
+//
+//  ViewController+UIGestureRecognizerDelegate.swift
+//  SimpleVideoEditor
+//
+//  Created by RenZhu Macro on 2020/7/9.
+//  Copyright © 2020 RenZhu Macro. All rights reserved.
+//
+
+import Foundation
+import MetalVideoProcess
+
+extension ViewController: UIGestureRecognizerDelegate {
+    func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldRecognizeSimultaneouslyWith otherGestureRecognizer: UIGestureRecognizer) -> Bool {
+        return true;
+    }
+    
+    @IBAction func rotateAction(ges: UIRotationGestureRecognizer) {
+        guard let item = (self.mainSelectedItem != nil ? self.mainSelectedItem : self.subSelectedItem) else {
+            return
+        }
+        guard let transformFilter = item.transformFilter else {
+            return
+        }
+        let rotDeg = transformFilter.rotate + Double(-ges.velocity)
+        transformFilter.rotate = rotDeg
+        item.rotate = rotDeg
+    }
+    
+    @IBAction func pinchAction(ges: UIPinchGestureRecognizer) {
+        guard let item = (self.mainSelectedItem != nil ? self.mainSelectedItem : self.subSelectedItem) else {
+            return
+        }
+        guard let transformFilter = item.transformFilter else {
+            return
+        }
+        transformFilter.scale = Position((transformFilter.scale.x) + Float(ges.velocity * 0.01), (transformFilter.scale.y) + Float(ges.velocity * 0.01))
+        var x: Float = (transformFilter.scale.x)
+        var y: Float = (transformFilter.scale.y)
+        if ((transformFilter.scale.x) < 0.01) {
+            x = 0.01
+        }
+        if ((transformFilter.scale.y) < 0.01) {
+            y = 0.01
+        }
+        transformFilter.scale = Position(x, y)
+        item.scale = transformFilter.scale
+    }
+    
+    @IBAction func panAction(ges: UIPanGestureRecognizer) {
+        guard let item = (self.mainSelectedItem != nil ? self.mainSelectedItem : self.subSelectedItem) else {
+            return
+        }
+        guard let transformFilter = item.transformFilter else {
+            return
+        }
+        
+        if ges.state == .changed {
+            let tanl = ges.translation(in: ges.view)
+            
+            // have to content the view scaleFactor and the vertex to texture scale.
+            transformFilter.translation = Position(currentPostion.x + Float(tanl.x * self.renderView.contentScaleFactor * 2.0) / Float(self.renderView.drawableSize.width), currentPostion.y - Float(tanl.y * self.renderView.contentScaleFactor * 2.0) / Float(self.renderView.drawableSize.height))
+            
+        } else if ges.state == .ended {
+            currentPostion = (transformFilter.translation)
+        }
+        
+        item.translation = transformFilter.translation
+    }
+    
+    
+}

Examples/SimpleVideoTransition/SimpleVideoTransition/ViewController+UIImagePickerControllerDelegate.swift

@@ -0,0 +1,104 @@
+//
+//  ViewController+UIImagePickerControllerDelegate.swift
+//  SimpleVideoEditor
+//
+//  Created by RenZhu Macro on 2020/7/9.
+//  Copyright © 2020 RenZhu Macro. All rights reserved.
+//
+
+import Foundation
+import AVFoundation
+import MobileCoreServices
+
+func orientationForTrack(asset: AVAsset) -> UIInterfaceOrientation {
+    let track = asset.tracks(withMediaType: .video).first
+    guard let txf = track?.preferredTransform else {
+        return .portrait
+    }
+    if txf.a == 0 && txf.b == 1.0 && txf.c == -1.0 && txf.d == 0 {
+        return .landscapeRight
+    } else if txf.a == 0 && txf.b == -1.0 && txf.c == 1.0 && txf.d == 0 {
+        return .landscapeLeft
+    } else if txf.a == 1.0 && txf.b == 0 && txf.c == 0 && txf.d == 1.0 {
+        return .portrait
+    } else if txf.a == -1.0 && txf.b == 0 && txf.c == 0 && txf.d == -1.0 {
+        return .portraitUpsideDown
+    } else {
+        return .unknown
+    }
+}
+
+
+extension ViewController: UIImagePickerControllerDelegate, UINavigationControllerDelegate {
+    func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
+        debugPrint("info:", info)
+        picker.dismiss(animated: true, completion: nil)
+        guard let mediaType = info[.mediaType] else {
+            return
+        }
+        
+        if mediaType as! CFString == kUTTypeMovie {
+            debugPrint("video")
+            guard let url = info[.mediaURL] as? URL else {
+                return
+            }
+            
+            let asset = AVAsset(url: url)
+            let orientation = orientationForTrack(asset: asset)
+            
+            debugPrint("asset:", asset)
+            let item = ResourceItem(asset: asset)
+            
+            item.fillType = .aspectToFill
+            item.orientation = orientation
+            switch item.orientation {
+            case .portrait:
+                break
+            case .landscapeLeft:
+                item.rotate = 90.0
+                break
+            case .landscapeRight:
+                item.rotate = -90.0
+                break
+            case .portraitUpsideDown:
+                item.rotate = 180.0
+                break
+            default:
+                break
+            }
+            
+            if picker == self.subPicker {
+                try? self.videoEditor?.insertOverlayItem(overlayItem: item)
+                item.roi = CGRect(x: 0.4, y: 0.4, width: 0.8, height: 0.8)
+                self.subResources.append(item)
+            } else {
+                
+                try? self.videoEditor?.insertItem(videoItem: item)
+                item.roi = CGRect(x: 0.0, y: 0.0, width: 1.0, height: 1.0)
+                self.mainResources.append(item)
+            }
+            self.rebuildPipeline()
+            self.subTableView.reloadData()
+            self.mainTableView.reloadData()
+            
+        } else {
+            debugPrint("unsupported")
+            return
+        }
+        
+    }
+    
+    func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
+        
+    }
+    
+    func documentPickerWasCancelled(_ controller: UIDocumentPickerViewController) {
+        
+    }
+    
+    func documentPicker(_ controller: UIDocumentPickerViewController, didPickDocumentsAt urls: [URL]) {
+        
+    }
+    
+    
+}

Examples/SimpleVideoTransition/SimpleVideoTransition/ViewController+UITableViewDelegate.swift

@@ -0,0 +1,108 @@
+//
+//  ViewController+UITableViewDelegate.swift
+//  SimpleVideoEditor
+//
+//  Created by RenZhu Macro on 2020/7/9.
+//  Copyright © 2020 RenZhu Macro. All rights reserved.
+//
+
+import Foundation
+import MetalVideoProcess
+
+extension ViewController: UITableViewDelegate {
+    func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
+        //selected
+        if tableView == self.mainTableView {
+            let item = self.mainResources[indexPath.row]
+            self.mainSelectedItem = item
+            currentPostion = item.transformFilter?.translation ?? Position(0.0, 0.0)
+            self.mainEditButton.isEnabled = true
+            self.mainDeleteButton.isEnabled = true
+            self.subEditButton.isEnabled = false
+            self.subDeleteButton.isEnabled = false
+            self.subSelectedItem = nil
+            guard let subIndex = self.subTableView.indexPathForSelectedRow else {
+                return
+            }
+            self.subTableView.deselectRow(at: subIndex, animated: true)
+            
+        } else {
+            let item = self.subResources[indexPath.row]
+            self.subSelectedItem = item
+            currentPostion = item.transformFilter?.translation ?? Position(0.0, 0.0)
+            self.mainEditButton.isEnabled = false
+            self.mainDeleteButton.isEnabled = false
+            self.subEditButton.isEnabled = true
+            self.subDeleteButton.isEnabled = true
+            self.mainSelectedItem = nil
+            guard let mainIndex = self.mainTableView.indexPathForSelectedRow else {
+                return
+            }
+            self.mainTableView.deselectRow(at: mainIndex, animated: true)
+        }
+    }
+}
+
+extension ViewController: TableViewDraggerDelegate {
+    func dragger(_ dragger: TableViewDragger, moveDraggingAt indexPath: IndexPath, newIndexPath: IndexPath) -> Bool {
+        if dragger == self.mainDragger! {
+            let item = self.mainResources[indexPath.row]
+            self.mainResources.remove(at: indexPath.row)
+            self.mainResources.insert(item, at: newIndexPath.row)
+            mainTableView.moveRow(at: indexPath, to: newIndexPath)
+        } else {
+            let item = self.subResources[indexPath.row]
+            self.subResources.remove(at: indexPath.row)
+            self.subResources.insert(item, at: newIndexPath.row)
+            subTableView.moveRow(at: indexPath, to: newIndexPath)
+        }
+        
+        
+        
+        return true
+    }
+    
+    func dragger(_ dragger: TableViewDragger, didEndDraggingAt indexPath: IndexPath) {
+        dragger.tableView?.reloadData()
+    }
+    
+    func dragger(_ dragger: TableViewDragger, willEndDraggingAt indexPath: IndexPath) {
+        self.rebuildPipeline()
+    }
+}
+
+extension ViewController: TableViewDraggerDataSource {
+    
+}
+
+extension ViewController: UITableViewDataSource {
+    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
+        if self.mainTableView == tableView {
+            return self.mainResources.count
+        } else {
+            return self.subResources.count
+        }
+    }
+    
+    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
+        if self.mainTableView == tableView {
+            guard let cell = tableView.dequeueReusableCell(withIdentifier: "mainCell", for: indexPath) as? ResourceItemTableViewCell else {
+                return UITableViewCell()
+            }
+            let item = self.mainResources[indexPath.row]
+            cell.textLabel?.text = NSString(format: "t:%d s:%@ d:%@", item.trackID, item.startTimeText, item.durationText) as String
+            return cell
+        } else {
+            guard let cell = tableView.dequeueReusableCell(withIdentifier: "pipCell", for: indexPath) as? ResourceItemTableViewCell else {
+                return UITableViewCell()
+            }
+            let item = self.subResources[indexPath.row]
+            cell.textLabel?.text = NSString(format: "t:%d s:%@ d:%@", item.trackID, item.startTimeText, item.durationText) as String
+            return cell
+        }
+    }
+    
+    
+}
+
+

Examples/SimpleVideoTransition/SimpleVideoTransition/ViewController.swift

@@ -23,7 +23,17 @@ class ViewController: UIViewController {
     
     var grayFilter: MetalVideoProcessLuminance?
     
+    public var transition: MetalVideoProcessTransition? = MetalVideoProcessFadeTransition()
+    deinit {
+    
+        print(" ViewController deinit")
+        
+    }
+    
     override func viewDidLoad() {
+        guard let transition = self.transition else {
+            return
+        }
         super.viewDidLoad()
         let asset1 = AVAsset(url: Bundle.main.url(forResource: "853", withExtension: "mp4")!)
         let asset2 = AVAsset(url: Bundle.main.url(forResource: "cute", withExtension: "mp4")!)
@@ -34,6 +44,8 @@ class ViewController: UIViewController {
         let transitionDuration = CMTime.init(seconds: 2.0, preferredTimescale: 600)
         item1.videoTransition = TransitionDuration(duration: transitionDuration)
         item1.audioTransition = FadeInOutAudioTransition(duration: transitionDuration)
+        
+        
         do {
             let editor = try MetalVideoEditor(videoItems: [item1, item2],
                                               customVideoCompositorClass: MetalVideoProcessCompositor.self)
@@ -41,61 +53,38 @@ class ViewController: UIViewController {
             let playerItem = editor.buildPlayerItem()
             self.progress.maximumValue = Float(playerItem.duration.seconds)
             let player = try MetalVideoProcessPlayer(playerItem: playerItem)
-            
-            let beautyFilter1 = MetalVideoProcessBeautyFilter()
-            beautyFilter1.saveUniformSettings(forTimelineRange: item1.timeRange, trackID: item1.trackID)
-            beautyFilter1.isEnable = false
-            
-            let beautyFilter2 = MetalVideoProcessBeautyFilter()
-            beautyFilter2.saveUniformSettings(forTimelineRange: item2.timeRange, trackID: item2.trackID)
-            beautyFilter2.isEnable = false
-            
-            let blurFilter1 = MetalVideoProcessGaussianBlurFilter()
-            blurFilter1.saveUniformSettings(forTimelineRange: item1.timeRange, trackID: item1.trackID)
-            blurFilter1.isEnable = false
-            
-            let blurFilter2 = MetalVideoProcessGaussianBlurFilter()
-            blurFilter2.saveUniformSettings(forTimelineRange: item2.timeRange, trackID: item2.trackID)
-            blurFilter2.isEnable = false
-            
-            let gray = MetalVideoProcessLuminance()
-            gray.isEnable = false
-            self.grayFilter = gray
-            
-            self.beauty1 = beautyFilter1
-            self.beauty2 = beautyFilter2
-            
-            self.blur1 = blurFilter1
-            self.blur2 = blurFilter2
-            
             let transitionTimeRange = item1.timeRange.intersection(item2.timeRange)
-            let fadeTransition = MetalVideoProcessFadeTransition()
+            
             
             //注意顺序 第一个视频在前 第二视频在后
-            fadeTransition.mainTrackIDs.append(item1.trackID)
-            fadeTransition.mainTrackIDs.append(item2.trackID)
+            transition.mainTrackIDs.append(item1.trackID)
+            transition.mainTrackIDs.append(item2.trackID)
             
             //告知转场的时间 通过item1和item2的intersection计算
-            fadeTransition.saveUniformSettings(forTimelineRange: transitionTimeRange, trackID: 0)
-            item1.transitoin = fadeTransition
+            transition.saveUniformSettings(forTimelineRange: transitionTimeRange, trackID: 0)
+            item1.transitoin = transition
             
             //Begin build pipeline
-            player.addTarget(beautyFilter1, atTargetIndex: nil, trackID: item1.trackID, targetTrackId: 0)
-            player.addTarget(beautyFilter2, atTargetIndex: nil, trackID: item2.trackID, targetTrackId: item2.trackID)
-            //mapping trackId on mainTrack 0
-            
-            beautyFilter1 --> blurFilter1 --> fadeTransition
-            beautyFilter2 --> blurFilter2 --> fadeTransition --> gray --> renderView
-            //Done
-                     
+            player.addTarget(transition, atTargetIndex: nil, trackID: item1.trackID, targetTrackId: 0)
+            player.addTarget(transition, atTargetIndex: nil, trackID: item2.trackID, targetTrackId: item2.trackID)
+           
+           transition --> renderView
+           
             self.player = player
             self.player?.playerDelegate = self
-            
+            self.player?.play()
         } catch {
             debugPrint("init error")
         }
     }
     
+    override func viewDidDisappear(_ animated: Bool) {
+//        player?.suspend()
+        player?.dispose()
+//        player?.removeAllTargets()
+//        player = nil
+    }
+    
     @IBAction func play(_ sender: Any) {
         self.player?.play()
     }