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# SCNSceneExportDelegate

Methods you can implement to participate in the process of exporting a scene to a file.

```
protocol SCNSceneExportDelegate : NSObjectProtocol
```

## Overview

When you call a [`SCNScene`](/documentation/SceneKit/SCNScene) object’s [`write(to:options:delegate:progressHandler:)`](/documentation/SceneKit/SCNScene/write(to:options:delegate:progressHandler:)) method to export the scene’s content to a file, you can optionally specify a delegate object to receive these messages.

## Topics

### Writing Image Attachments

[`write(_:withSceneDocumentURL:originalImageURL:)`](/documentation/SceneKit/SCNSceneExportDelegate/write(_:withSceneDocumentURL:originalImageURL:))

Tells the delegate to export an image attached to a scene.


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