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?

Given my limited knowledge of physics, I would appreciate it if individuals with a solid understanding of the subject could provide insights into this matter. I have added a physical component to a entity in Reality Composer Pro, but I am seeking guidance on how to achieve the following: Make an object float in the air (with a slight downward motion reminiscent of the moon’s surface) Enable the object to move at a slow pace Implement a strong rebound force I would be grateful if you could provide appropriate values for these parameters. Thank you for your assistance.

How to make a specified entity in RealityView be captured by users: This entity has physical and collision components, and the user will not change when he does not grasp the action. However, when the user makes a grab hand gesture and is very close to the entity (there can be a small deviation), an Anchor component will be enabled to bind the entity to the hand, but when the user lets go, he will fall along the y-axis of the current position (affected by the physical component). I hope you can help me. Thank you.

How to detect whether two entities collide in RealityView and execute some instructions after the collision. It is assumed that both entities have collision components, and one of them also has an anchor component (such as a binding hand).

In visionOS, the virtual content is covered by the hand by default, so I want to know that in the hybrid space, if the distance of an entity is behind a real object, how can the object in the room be covered like the virtual content is covered by the hand?

In WWDC24, visionOS hand tracking has a new function that can make an entity track the hand faster (but at the expense of a certain degree of accuracy), and the video only explains how to implement ARKit, so please ask how to implement the anchorEntiy in the reality view.

I have been concentrating on developing the visionOS application. While I am currently quite familiar with RealityKit, CompositorServices has also captured my attention. I have not yet acquired knowledge of CompositorServices. Could you please clarify whether it is essential for me to learn CompositorServices? Additionally, I would appreciate it if you could provide insights into the advantages of RealityKit and CompositorServices.

In the visionOS App, I want to detect whether the user is in the room. My idea is as follows: Check whether there are walls around the user May I ask how to do it? Thanks！

I have created a portal and attached it to a wall using the AnchorEntity. However, I am seeking guidance on how to determine the size of the wall so that the portal can fully occupy it. Initially, I attempted to locate relevant information within the demo code, but I encountered difficulties in comprehending certain sections. I would appreciate it if someone could provide a step-by-step explanation or a reference to the appropriate code. Thank you for your assistance.

In visionOS, ARKit is to integrate virtual and reality. However, most of the functions RealityKit can be easily implemented (except for Scene reconstruction, Room Tracking and enterprise API), so do I still need to use ARKit? Is there any difference between them?

I'm developing an app in which I need to render pictures and contain some models in a RealityView. I want to set up a camera, intercept virtual content through the camera, and save it as an image.

In RealityView, physical components are only applicable to certain solids. How can I simulate the physical effects of water and cloth? enity.components.set(PhysicalComponent)