I have developed a code that initiates the Timeline in the Reality Composer Pro scene every 12.93 seconds. RealityView { … } .onAppear { startTimer() } .onDisappear { stopTimer() } func startTimer() { timer = Timer.scheduledTimer(withTimeInterval: 12.93, repeats: true) { _ in action() } } func stopTimer() { timer?.invalidate() } func action() { print(“SunUpDown”) NotificationCenter.default.post( name: NSNotification.Name(“RealityKit.NotificationTrigger”), object: nil, userInfo: [ “RealityKit.NotificationTrigger.Scene”: scene as Any, “RealityKit.NotificationTrigger.Identifier”: “SunUpDown” ] ) } Upon receiving the “SunUpDown” command, Timeline will be executed. However, everything was functioning normally when I was running the scene, and I could continue looping until I attempted to zoom in on the window and discovered that it ceased looping. Could you please provide an explanation for this behavior? Note: The window type is volumetric, and the parameter of the defaultWorldScaling modifier is dynamic.

In the reality view, I found that the entity could not cast a shadow on the reality. What configuration should I add to achieve this function?

In my Volume, there is a RealityView that includes lighting effects. However, when the user drags the position of the window back and forth, the farther the distance between the volume and the user, the greater the brightness of the light effect. ( I believe this may be a Beta version of a bug.) Note: The volume windowGroup has the .defaultWorldScaling(.dynamic) property.

The entity in My RealityView contains tracking components and allows them to track different places of the hand. However, I found that except for the fingertip of the index finger, the fingertip of the thumb, the palm and the wrist, all other positions cannot be tracked normally (such as the fingertip of the middle finger). How can I solve it (I think it may be a beta version of the bug)

In visionOS2, there exists a function that enables users to raise their hand to display the home button. However, this functionality conflicts with the interaction required for the mixed display space utilized within my application. Therefore, I seek a method to disable this functionality.

I can execute an action by allowing Xcode to send a notification to Reality Composer Pro via NotificationCenter, or I can send notifications to Xcode through the Notification Action in Reality Composer Pro. However, I discovered that they were unable to accept notifications from both parties within my project. To ascertain whether there was an error in my code, I created a simple Demo project. I utilized the same code and determined that it functioned normally within the Demo project. It is perplexing that I am unable to resolve this issue. Do I require additional modifications?

Is there any action that can clone the entity in RealityView to the number I want? If there is, please let me know. Thank you!

In RealityView I have two entities that contain tracking components and collision components, which are used to follow the hand and detect collisions. In the Behaviors component of one of the entities, there is an instruction to execute action through onCollision. However, when I test, they cannot execute action after collisions. Why is this?

The light of RealityView can only be effective on virtual objects. I hope it can be projected into the real world. What API can be implemented?

In Reality View, I want to move an entity A to the position of entity B, but I can't determine the coordinates of entity B (for example, entity B is tracking the hand). What's the solution?

In this code: https://developer.apple.com/documentation/visionos/incorporating-real-world-surroundings-in-an-immersive-experience It contains a physical collision reaction between virtual objects and the real world, which is realized by creating a grid with physical components. However, I don't understand the information in the document very well. Who can give me a solution? Thank you!

Coordinate conversion was mentioned in https://developer.apple.com/wwdc24/10153 (the effect is demonstrated at 22:00), in which the demonstration is an entity that jumps out of volume into space, but I don't understand his explanation very well. I hope you can give me a basic solution. I am very grateful for this!

This effect was mentioned in https://developer.apple.com/wwdc24/10153 (the effect is demonstrated at 28:00), in which the demonstration is you can add coordinates by looking somewhere on the ground and clicking., but I don't understand his explanation very well. I hope you can give me a basic solution. I am very grateful for this!

There appears to be an issue with the sales of my application. The sales table indicates a negative value of -1. Has anyone processed a refund for this transaction?

In iOS, to display a RealityView, you can assign a value to the content.camera property: content.camera = .virtual However, how can this be implemented in macOS and tvOS?