<!--
{
  "availability" : [
    "iOS: 11.3.0 -",
    "iPadOS: 11.3.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "ARKit",
  "identifier" : "/documentation/ARKit/ARSCNPlaneGeometry/update(from:)",
  "metadataVersion" : "0.1.0",
  "role" : "Instance Method",
  "symbol" : {
    "kind" : "Instance Method",
    "modules" : [
      "ARKit"
    ],
    "preciseIdentifier" : "c:objc(cs)ARSCNPlaneGeometry(im)updateFromPlaneGeometry:"
  },
  "title" : "update(from:)"
}
-->

# update(from:)

Reshapes the SceneKit geometry to match the specified plane mesh.

```
func update(from planeGeometry: ARPlaneGeometry)
```

## Parameters

`planeGeometry`

A coarse mesh representation of a detected plane’s estimated shape.

## Discussion

To update a SceneKit model of a plane actively tracked in an AR session, call this method in your [`ARSCNViewDelegate`](/documentation/ARKit/ARSCNViewDelegate) object’s [`renderer(_:didUpdate:for:)`](/documentation/ARKit/ARSCNViewDelegate/renderer(_:didUpdate:for:)) callback, passing the [`geometry`](/documentation/ARKit/ARPlaneAnchor/geometry) property from the [`ARPlaneAnchor`](/documentation/ARKit/ARPlaneAnchor) object that callback provides.

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)