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Questions tagged [usdz]

Universal Scene Description (USD) is a standard to promote interop and exchange of 3D scene descriptions between artists, developers and film studios. USDZ is a WYSIWYG editor developed by Apple and Pixar.

USDZ was introduced by Apple in WWDC 2018 as a WYSIWYG editor developed with Pixar, that allows developers to bring objects from Photoshop and Dimension into an AR environment.

Its features according to Pixar includes:

  • Robust schemas for interchange of geometry, shading, and skeletal deformation
  • High performance data retrieval and rendering, including powerful instancing features
  • The ability to package user-selectable content variations, natively
  • A sound architecture that is flexible enough to adapt to future needs
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Force open AR Quicklook links through Safari mobile browser

People who have been keeping up with the new ARKit features will know that AR QuickLook is a new feature introduced with ARKit 2.0 that lets you try AR features right inside your browser instead of installing a separate AR app. The issue I am…
Dezze
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How to convert ARReferenceObject file into USDZ file?

I've got an .arobject file using the ARKit Scanner App. I want to convert this file into an usdz file because I want to see this object from Safari browser. Does anyone know how to do it?
tadamw
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Particle system in RealityKit

Is there a particle system in RealityKit? if so, can someone point me to the correct documentation/articles? So far I did not find any particle systems in the RealityKit module.
Praveen Kumar
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USD + Hydra as a replacement of SceneKit

On the WWDC'22 talk, Apple presents an approach to work natively with USD in Xcode. Also, Apple published this code to download. To be able to use this USD + Hydra as a replacement of SceneKit, how would we do to interact with the UI? If anyone can…
Mane Manero
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SceneKit – Camera does not see a model when rendering in SwiftUI

I have a USDZ model that when imported in to SceneKit scene graph shows fine, if I set the preview to show from the cameras perspective it is in frame. However when I run it via SwiftUI preview, on simulator or on device it does not render. I've…
Altrozero
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RealityKit – Grab children from USDZ file by name

Goal: I have a massive USDZ scene file, with hundreds of layers and objects. Need to grab each object easily, to then manipulate in RealityKit. Tried: The approach bellow by Andy Jazz is the only solution I found for now: let entity =…
Mane Manero
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Node name was overwritten by USDZ model

I'm currently developing an iOS app that uses ARKit and SceneKit for the augmented reality. I'm having a problem while loading an .usdz model into the scene. I can load it correctly into the scene, but, when I try to get the node name (in which I…
Federico
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USD export from Unity3D not respecting hierarchical transformations

I have a few scenes in Unity that I am trying to export using the USD package. That package has various options for export (from the Menu, over the recorder, via API calls), and I have tried them all, but the resulting file (inspected with usdview)…
Mike Wise
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RealityKit - Hiding and showing parts (meshes) of usdz model

I need an advice. I am using RealityKit for showing models of fences. I have models which has several meshes that shouldn't be shown at once. For example filling of the fence. There are different options and I have it all in my model: I would like…
Libor Zapletal
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Can we validate USDZ model using any Python tool?

I have generated USDZ file using command line tool usdzconvert. I need a tool to verify that USDZ generated properly or not. Any python commandline tool can do USDZ file validation? Please find this USDZ file which work properly.
Harshil Patel
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How can USDZ model be imported into Unity?

I'm trying to import USDZs for ARKit prototype. I followed the steps in this post, but USDZ import is not supported with this process. I'm aware that pixyz can achieve this, but I'm wondering: Is there a free method to convert a USDZ to a…
BagBak
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RealityKit – Playing multiple animations in USDZ file

Has anyone found a workflow to create multiple animations for a skeletal mesh packaged in a USDZ file and playback the animations using RealityKit? I have a skeletal mesh with two animations (idle & run). I want to package them into a single USDZ…
Ksteffen
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Create custom AR Quick Look experience without using the device's camera

I'm wondering if there's a way to recreate the "Object" experience when viewing a .usdz file through Apple's AR Quick Look. I want an experience that showcases a 3D object without "augmenting reality". Some options that I'm thinking of that might be…
Ilmira
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Why is the file size of a .reality file so much larger than .usdz?

I am using Apple's new Reality Composer application to attach an image anchor to my .USDZ. My USDZ file is +/- 5MB when imported to Reality Composer and the reference image is 100KB. When I export my .reality file from Reality Composer, the file…
John Martz
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ImportError: No module named enum on Mac Python 2.7.10

I already had tried installing enum, enum34 and aenum on my mac, but i could not import these packages into my code or interactive shell. But I can find these packages on pip freeze. Basically I want to run https://github.com/kcoley/gltf2usd .…
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