Hello, I have a problem with converting GlTF to USDZ using usdzconverter. After converting, the resulted USDZ file has a displaced axis of rotation, when the original axis is placed in the center of the object. I've attached two screenshots, in the first one axis is correct (the file was converted with a third-party service) and in another one it's not (usdzconverter was used) Is there a way to fix it somehow? Thanks, Mikola

I use Entity.loadAsync to load the USDZ. The camera is stuck for a moment when loading the model. var cancellable: AnyCancellable? = nil     cancellable = Entity.loadAsync(contentsOf: Bundle.main.url(forResource: "vyygabbj_afr", withExtension: "usdz")!)       .sink(receiveCompletion: { error in         DispatchQueue.main.async {          cancellable?.cancel()          cancellable = nil         }       }, receiveValue: { [weak self] ey in         guard let self = self else { return }         self.modelEy = ModelEntity()         self.modelEy.addChild(ey)         self.rootAnchor.addChild(self.modelEy)         ey.availableAnimations.forEach {           ey.playAnimation($0.repeat())         }         DispatchQueue.main.async {           cancellable?.cancel()           cancellable = nil         }     })

Hi - I'm a founder at an AR SaaS company that relies on the USDZ conversion tools to deliver quicklooks to our Apple device users. I was wondering if there was a changelog for the 0.64 to 0.65 update that I could access (whether publicly, or under NDA) as our content pipeline has baked in a lot of the old 0.64 quirks, issues and unsupported USD features that we discovered (things like avoiding multi-UV material mapping, or how to ensure GLTF texture transforms come through). If we knew the specific changes made - whether bugs fixed, or additional USD features supported - it would make upgrading much smoother and more predictable. Is there anyone I can contact to get a list like that?

I'm aware that you can create a simple scene in RC, import it to Xcode, and then add additional 3D objects with OcclusionMaterial applied to them using RealityKit. However, I would like to accomplish that the other way around, i.e. exporting a .reality-file (or usdz?) from Xcode with OcclusionMaterial applied into RC. Is that possible? If so, what's the workflow?

I want to crop the usdz model in runtime. I use ModelIO for this. Before: [https://i.stack.imgur.com/yDXXF.jpg) After: [https://i.stack.imgur.com/m9ryg.jpg) First of all, get file from bundle let url = URL(fileURLWithPath: file) } else { print("Object not found in Bundle") } And then I need to access asset let asset = MDLAsset(url: url) What should I do after this step? How am I supposed to use SCNGeometrySource and SCNGeometryElement or MDLVoxelArray classes?

Dear community, I downloaded the USDPython 0.64 Package for my macOS Big Sur 11 on my new Mac book pro with M1 (13inc). After installing it the .pkg ( that is a modelio) I open the folder in my Applications folder and I double click on the usd.command. I am on .zsh and I did .zshrc and inserted my filepath in my case are export PATH=$PATH:/Users/<myusername>/Applications/usdpython/USD export PYTHONPATH=$PYTHONPATH:/Users/<myusername>/Applications/usdpython/USD/lib/python export PATH=$PATH:/Users/<myusername>/Applications/usdpython/usdzconvert are these correct? I am not sure if that Machintosh HD should be /Users/<myusername> I keep getting the Error: failed to import pxr module. Please add path to USD Python bindings to your PYTHONPATH Any help would be much appreciated

Does Apple have any documentation on using Reality Converter to convert FBX to USDZ on an M1 Max? I'm trying to convert an .fbx file to USDZ with Apple's Reality Converter on an M1 Mac (macOS 12.3 Beta), but everything I've tried so far has failed. When I try to convert .fbx files on my Intel-based iMac Pro, it succeeds. Following some advice on these forums, I tried to install all packages from Autodesk https://www.autodesk.com/developer-network/platform-technologies/fbx-sdk-2020-0 FBX SDK 2020.0.1 Clang FBX Python SDK Mac FBX SDK 2020.0.1 Python Mac FBX Extensions SDK 2020.0.1 Mac Still no joy. I have a work around - I still have my Intel-based iMac. But I'd like to switch over to my M1 Mac for all my development. Any pointers? Note: I couldn't get the usdzconvert command line tool to work on my M1 Mac either. /usr/bin/python isn't there.

Hello, My problem is that I would like to have the first screen (the screen right before entering AR) removed from the AR Quick look. I want it to where when I open the USDZ, it goes straight into AR, and not show the screen before it, similar to how Apple does it when you want to view their iPhone 13 pro in AR.

I want to remove unnecessary materials or textures in order to reduce the size of the USDZ model I have. How can I manipulate this model with swift? or, I can try any advice to reduce the size of the USDZ model

How can I crop a 3D model as seen in the photos? Should I use MetalKit or can I handle it with sceneKit and modelIO? I couldn't find any code examples on this topic. Can you share the code snippet Before: [https://i.stack.imgur.com/yDXXF.jpg) After: [https://i.stack.imgur.com/m9ryg.jpg)

Is there any way to download apple product models in .usdz directly from apple website?

I am using scene.write(to:"dirpath\name.usdz") to get usdz export functionality into my app (universal, macOS & iOS). My problem is, it ceases to work after the first use, quitting & restarting the app is the only way to re-enable it. I have tried reusing the same scene, and instantiating a new scene (both ways with the exact same node structure), same results every time: first invocation writes a file of ~14MB, any calls after that write 1.5-2k of garbage. I use a unique filename for each write, and check to make sure it doesn't already exist. Any ideas?

I've been watching a 2019 Developer Video "Building Apps with RealityKit" and working along with it. It shows how to create a custom entity. It shows how to load entities from .usd files. How do you either load a custom entity, convert an Entity to a custom entity, or maybe move model hierarchy from an Entity to a custom entity? I assume there's a way to do this.

Hi, I'm using the provided CaptureSample together with HelloPhotogrammetry to create a 3D model. Although I am making sure that there are depth images within the folder (TIF) - after building the model, the model size is tiny. How can I make sure that the model is built in the real world size? or - how can i resize the model to real world size? Thanks.

Can I take photos from an android device or any camera instead of an ipad or iphone while using the Object Capture API? What negative side effects can it have. Note: I'm asking this question because I noticed that the size of the usdz model has grown too much in my experiments. (For example 200mb instead of 20mb)

Hello, I have a gltf file, which I am converting to usdz using threejs online editor. The file is a sofa model, with all its maps baked to complete UV except diffuse fabric map which is tileable to emulate a fabric cloth. So the fabric map has to use an increased scale of 17 so it tiles properly, but the other maps dont need tiling and work on the 1scale value. The problem I am facing is that the Quicklook uses scale of diffuse fabric map and applies on all others as well, distorting the look. how can I control this? i am a windows user. thanks

I am fairly new to ios development, and i have a rather simple question (i guess): I exported an FBX model from blender with attached child elements (some empty axis). I need those transforms for a certain purpose in my app. However, they won't show up when im placing my model entity in the AR Scene and try to access it's child elements. However, they are showing up in the preview view in xcode when i click on the model file. Can someone please explain why this is and how I can access them? Would be lovely. Thanks for your help in advance!

I used to use usdzconvert to convert my .obj files to .usdz (adding the materials via command line parameters). usdzconvert however is written in python 2, which is no longer supported in macos x 10.12. Consequently after the latest update, I can't convert obj files to usdz anymore via command line and have to use the Reality Converter instead. Does anybody happen to know of other ways how to convert .obj files to .usdz using the command line? Thanks, Christoph

Hello friends, Im using Terminal to convert .glb file to .usdz file with USDPython-0.65 which I download from Apple developer website. I was using usd command properly since yesterday. Im getting this errors. https://ibb.co/PDmB3qn Anybody having this trouble too?

Nevermind, will be using https://github.com/Shopify/screenshot-glb