AR应用程序将根据ARImageAnchor播放不同的视频

Question

我正在为iOS创建一个AR应用程序来检测一个立方体上的图像(--> 6个要识别的不同图像)。每当检测到一个图像时，就应该播放一个视频-每个不同的图像对应一个不同的视频(对于图像1，应该播放视频1...)。

我的问题是我不知道如何跟踪当前跟踪的图像以及基于此播放哪个视频

现在，应用程序跟踪不同的图像，但始终播放相同的视频(视频"1".mp4)

override func viewWillAppear(_ animated: Bool) {
    super.viewWillAppear(animated)
    let configuration = ARImageTrackingConfiguration()

    if let trackedImages = ARReferenceImage.referenceImages(inGroupNamed: "ARImages", bundle: Bundle.main) {
        configuration.trackingImages = trackedImages
        configuration.maximumNumberOfTrackedImages = 6
    }
    sceneView.session.run(configuration)
}

override func viewWillDisappear(_ animated: Bool) {
    super.viewWillDisappear(animated)
    sceneView.session.pause()
}

func renderer(_ renderer: SCNSceneRenderer, didAdd node: SCNNode, for anchor: ARAnchor) {

    guard let imageAnchor = anchor as? ARImageAnchor, 
          let fileUrlString = Bundle.main.path(forResource: "1", ofType: "mp4") else {
        return
    }
    let videoItem = AVPlayerItem(url: URL(fileURLWithPath: fileUrlString))
    let player = AVPlayer(playerItem: videoItem)
    let videoNode = SKVideoNode(avPlayer: player)

    player.play()
    ...
}

如何识别当前ImageAnchor并链接相关视频？

Answer 1

您可以为ARReferenceImage命名，因此一种方法是将图像和关联的视频文件命名为相同的名称。

guard let imageAnchor = anchor as? ARImageAnchor,
             let name = imageAnchor.referenceImage.name,
             let fileUrlString = Bundle.main.path(forResource: name, ofType: "mp4") else {
    return
}

let videoItem = AVPlayerItem(url: URL(fileURLWithPath: fileUrlString))
let player = AVPlayer(playerItem: videoItem)
let videoNode = SKVideoNode(avPlayer: player)

player.play()