如何从 .usdz 创建 SCNNode? [英] How to create a SCNNode from a .usdz?

问题描述

我已经下载了 Apple 提供的 .usdz 模型:

为什么它没有纹理?

如您所见，我已将下载的 .usdz 文件放入我的项目目录中的文件夹中:

解决方案

添加 .USDZ 对象的正确方法实际上是使用文件的 URL 创建场景:

 让场景 = 尝试！SCNScene(url: usdzURL, 选项: [.checkConsistency: true])

甚至通过引用节点创建:

 let referenceNode = SCNReferenceNode(url: usdzURL)参考节点.load()

I have downloaded the .usdz models provided by Apple: https://developer.apple.com/arkit/gallery/

But now, I want to create a SCNNode with one of these models, so I am doing this to obtain the node:

guard let urlPath = Bundle.main.url(forResource: "retrotv", withExtension: "usdz") else {
    return
}
let mdlAsset = MDLAsset(url: urlPath)
let modelRootNode = SCNScene(mdlAsset: mdlAsset).rootNode

Then I add it to the scene and the result is this:

Why does it have no textures?

I have the downloaded .usdz files into a folder in my project directory as you can see:

解决方案

The correct way to add the .USDZ object is actually creating the scene with the file's URL:

 let scene = try! SCNScene(url: usdzURL, options: [.checkConsistency: true])

Or even creating via Reference Node:

 let referenceNode = SCNReferenceNode(url: usdzURL)
 referenceNode.load()

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