翻译强力驱动I tried to look at the main documentation at http://graphics.pixar.com/usd/docs/index.html and http://graphics.pixar.com/usd/docs/Usdz-File-Format-Specification.html but could not find the details to create a usdz file.
I can get some sample USD files from http://graphics.pixar.com/usd/downloads.html
How can we create one?
A gallery of usdz files are provided by Apple at the url below
https://developer.apple.com/arkit/gallery/
You need a device with iOS12 beta installed for the models to be viewable on your mobile device. Basically Apple uses Mime-types model/usd usdz and model/und.pixar.usd .usdz to identify them as AR viewable. You also need to do this via the safari browser... Chrome does not support the file format.
the html to list a thumbnail usdz file would be the following.
<a rel="ar" href="model.usdz"> <img src="model-preview.jpg"> </a>to create your own usdz files, Apple has bundled usdz_converter as part of Xcode 10. Its a command line tool for creating the usdz file from OBJ files, Single-frame Alembic (ABC) files, USD file (either .usda or usd.c)
the basic command line is
xcrun usdz_converter Wineglass.obj Wineglass.usdz usdz supports physically based renders, to achieve this you add images for each component of the PBR like so,
xcrun usdz_converter Wineglass.obj Wineglass.usdz - g WineGlassMesh -color_map WineGlass_Albedo.png -metallic_map WineGlass_Metallic.png -roughness_map WineGlass_Roughness.png -normal_map . WineGlass_Normal.png -emissive_map WineGlass_Emissive.pngA good video to get you started on how to create usdz files, host on a webpage & create a quicklook in your own app
@Ash, you have to activate the command line tools in Xcode preferences, in case they're not actived yet (that was my case). See image below.
