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# renderer(_:didUpdate:for:)

Tells the delegate that a SceneKit node’s properties have been updated to match the current state of its corresponding anchor.

```
optional func renderer(_ renderer: any SCNSceneRenderer, didUpdate node: SCNNode, for anchor: ARAnchor)
```

## Parameters

`renderer`

The [`ARSCNView`](/documentation/ARKit/ARSCNView) object rendering the scene.

`node`

The updated SceneKit node.

`anchor`

The AR anchor corresponding to the node.

## Discussion

Depending on the session configuration, ARKit may automatically update anchors in a session. The view calls this method once for each updated anchor.

---

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