ARKit：如何在ARKit场景中添加UIView？ [英] ARKit: How can I add a UIView to ARKit Scene?

问题描述

我正在使用ARKit处理AR项目。

I am working on a AR project using ARKit.

我想在ARKit场景中添加一个UIView。当我点击一个对象时，我希望将信息作为对象旁边的弹出窗口。这些信息在UIView中。

I want to add a UIView to ARKit Scene. When I tap on a object, I want to get information as a "pop-up" next to the object. This information is in a UIView.

是否可以将此UIView添加到ARKit场景？
我将这个UIView设置为场景，然后我该怎么办？
我可以给它一个节点然后将它添加到ARKit场景吗？如果是这样，它是如何工作的？

Is it possible to add this UIView to ARKit Scene? I set up this UIView as a scene and and what can I do then? Can I give it a node and then add it to the ARKit Scene? If so, how it works?

还是有另一种方法吗？

谢谢！

编辑：我的SecondViewController的代码

Code of my SecondViewController

class InformationViewController: UIViewController {

    @IBOutlet weak var secondView: UIView!

    override func viewDidLoad() {
        super.viewDidLoad()
        self.view = secondView
    }
}

编辑2：firstViewController中的代码

EDIT 2: Code in firstViewController

guard let secondViewController = storyboard?.instantiateViewController(withIdentifier: "SecondViewController") as? SecondViewController else {
    print ("No secondController")
    return
}

let plane = SCNPlane(width: CGFloat(0.1), height: CGFloat(0.1))       
plane.firstMaterial?.diffuse.contents = secondViewController.view

let node = SCNNode(geometry: plane)

我只得到一个平面的白色屏幕，而不是视图。

I only get a white screen of a plane, not the view.

推荐答案

最简单（尽管未记录）的方法是将视图控制器支持的 UIView 设置为 SCNPlane上材质的漫反射内容（或任何其他几何体，但由于显而易见的原因，它最适合飞机）。

The simplest (although undocumented) way to achieve that is to set a UIView backed by a view controller as diffuse contents of a material on a SCNPlane (or any other geometry really, but it works best with planes for obvious reasons).

let plane = SCNPlane()
plane.firstMaterial?.diffuse.contents = someViewController.view
let planeNode = SCNNode(geometry: plane)

你必须将视图控制器保留在某处，否则它会继续被释放，飞机将不可见。只使用 UIView 而不使用任何 UIViewController 将引发错误。

You will have to persist the view controller somewhere otherwise it's going to be released and plane will not be visible. Using just a UIView without any UIViewController will throw an error.

关于它的最好的事情是它保留了所有的手势，实际上只是作为一个简单的视图。例如，如果您使用 UITableViewController 的视图，您将能够在场景中向右滚动。

The best thing about it is that it keeps all of the gestures and practically works just as a simple view. For example, if you use UITableViewController's view you will be able to scroll it right inside a scene.

我还没有在iOS 10及更低版本上测试它，但到目前为止它一直在iOS 11上运行。适用于普通的SceneKit场景和ARKit。

I haven't tested it on iOS 10 and lower, but it's been working on iOS 11 so far. Works both in plain SceneKit scenes and with ARKit.

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