Extract Reality Composer Scene for Arquicklook

Extract Reality Composer scene for ARQuickLook

From Apple's Creating 3D Content with Reality Composer
document:

You can also save your composition to a .reality file for use as a
lightweight AR Quick Look experience in your app or on the web. This
allows users to place and preview content in the real world to get a
quick sense of what it’s like.

To create a Reality file, choose File > Export > Export Project in the
Reality Composer menu, and provide a name for the file. You use the
Reality file that gets stored to disk just like you would use a USDZ
file, as described in Previewing a Model with AR Quick Look.

RealityKit – Load another Scene from the same Reality Composer project

The simplest approach in RealityKit to switch two or more scenes coming from Reality Composer is to use removeAll() instance method, allowing you to delete all the anchors from array.

You can switch two scenes using asyncAfter(deadline:execute:) method:

let boxAnchor = try! Experience.loadBox()
arView.scene.anchors.append(boxAnchor)

    
DispatchQueue.main.asyncAfter(deadline: .now() + 2.0) {
    
    self.arView.scene.anchors.removeAll()

    let sphereAnchor = try! Experience.loadSphere()
    self.arView.scene.anchors.append(sphereAnchor)
}

Or you can switch two different RC scenes using a regular UIButton:

@IBAction func loadNewSceneAndDeletePrevious(_ sender: UIButton) {

    self.arView.scene.anchors.removeAll()

    let sphereAnchor = try! Experience.loadSphere()
    self.arView.scene.anchors.append(sphereAnchor)
}

Move the centre of the force within Reality Composer scene

Physics forces are applied to the model's pivot position. At the moment, neither RealityKit nor Reality Composer has the ability to change the location of an object's pivot point.

In addition to the above, you've applied Add Force behavior that pushes an object along a specific vector with the definite velocity, however, user's taps occur along the local -Z axis of the screen. Do these vectors match?

And one more note: within the Reality-family, only rigid body dynamics is possible, not soft body.

Reality Composer Tap Trigger issue

i found the issue that the ArView was added to a scannerView which was a normal UIImageView deleting that image and adding the ArVIew to the main View make it work

class ViewController: UIViewController {

let arVi = ARView()

override func viewDidLoad() {
    super.viewDidLoad()

    let ar = try! orbits.loadScene()
    arVi.scene.anchors.append(ar)

    self.view.addSubview(arVi)
    arVi.translatesAutoresizingMaskIntoConstraints = false
    arVi.widthAnchor.constraint(equalToConstant: UIScreen.main.bounds.width).isActive = true
    arVi.heightAnchor.constraint(equalToConstant: UIScreen.main.bounds.height).isActive = true
    arVi.centerYAnchor.constraint(equalTo: view.centerYAnchor).isActive = true
    arVi.centerXAnchor.constraint(equalTo: view.centerXAnchor).isActive = true

}
}

File from Reality Composer not switching scenes on iPhone 7

It's not a bug. Seemingly you do not append anchor holding B scene to an array of anchors, while removing previous anchor containing A scene.

You can read this post (a second approach) to find out how to implement a desired methodology.

@IBAction func tappedButton(_ sender: UITapGestureRecognizer) {

    if (counter % 2) == 0 {
        arView.scene.anchors.removeAll()
        arView.scene.anchors.append(firstSceneAnchor!)
    } else {
        arView.scene.anchors.removeAll()
        arView.scene.anchors.append(secondSceneAnchor!)
    }
    counter += 1
}

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