How To Load a ModelEntity from a URL?

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Created Aug ’23

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3D assets such as models, textures, animations, etc., can significantly inflate app bundle sizes. To mitigate this, loading these assets from a remote URL is the way to go. But how does someone load a ModelEntity from a hosted URL?

The current method is to load a Model3D:

let url = URL(string: "my-url")!
Model3D(url: url)

But this does not pack all the features of a ModelEntity which can be used in a RealityView. Such as anchoring, animations, advanced gestures, etc. How do I load a remote URL into a ModelEntity?

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Answer 1

Altidor OP

Aug ’23

This involves a few short steps:

Storing the assets on a remote server: For this purpose, you'd need to host your assets on a remote server. Halocline (https://www.haloclinetech.com/) offers a unique, dedicated platform for this specific need, and the best part is that it's free! Given my experience with it, I'd recommend checking it out.

Fetching the assets in your app: Once you have a URL for your asset, you can use the provided script from Halocline (https://www.haloclinetech.com/learn/) which helps store files from remote URLs in the user’s temporary directory.

Screenshot 2023-08-20 at 9.50.58 PM.png

Using the assets in your app: After fetching the assets, you can incorporate them into your application as if they were locally stored.

let halocline = HaloclineHelper()
let url = URL(string: "your-halocline-url")!
let modelEntity = try await halocline.loadEntity(from: url)

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Answer 2

Altidor OP

Aug ’23

Disclosure: I'm affiliated with Halocline.

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