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# ARSCNPlaneGeometry

A SceneKit representation of the 2D shape of a plane, for use with plane detection results in an AR session.

```
class ARSCNPlaneGeometry
```

## Overview

[`ARSCNPlaneGeometry`](/documentation/ARKit/ARSCNPlaneGeometry) is a subclass of <doc://com.apple.documentation/documentation/SceneKit/SCNGeometry> that wraps the mesh data provided by the [`ARPlaneGeometry`](/documentation/ARKit/ARPlaneGeometry) class. You can use [`ARSCNPlaneGeometry`](/documentation/ARKit/ARSCNPlaneGeometry) to visualize the plane shape estimates provided by ARKit in a SceneKit view.

> Important:
> ``doc://com.apple.arkit/documentation/ARKit/ARSCNPlaneGeometry`` is available only in SceneKit views or renderers that use Metal. This class is not supported for OpenGL-based SceneKit rendering.

As your AR session continues to run, ARKit provides refined estimates of a detected plane’s 2D shape. Use the [`update(from:)`](/documentation/ARKit/ARSCNPlaneGeometry/update(from:)) method to incorporate those refinements into the plane’s SceneKit representation.

## Topics

### Creating a Geometry

[`+  planeGeometryWithDevice:`](/documentation/ARKit/ARSCNPlaneGeometry/init(device:))

Creates a SceneKit plane geometry for rendering with the specified Metal device object.

### Updating the Geometry

[`-  updateFromPlaneGeometry:`](/documentation/ARKit/ARSCNPlaneGeometry/update(from:))

Reshapes the SceneKit geometry to match the specified plane mesh.

## Relationships

### Conforms To

[`SCNShadable`](/documentation/SceneKit/SCNShadable)

[`NSSecureCoding`](/documentation/Foundation/NSSecureCoding)

[`CVarArg`](/documentation/Swift/CVarArg)

[`NSCopying`](/documentation/Foundation/NSCopying)

[`SCNAnimatable`](/documentation/SceneKit/SCNAnimatable)

[`Equatable`](/documentation/Swift/Equatable)

[`SCNBoundingVolume`](/documentation/SceneKit/SCNBoundingVolume)

[`NSObjectProtocol`](/documentation/ObjectiveC/NSObjectProtocol)

[`Hashable`](/documentation/Swift/Hashable)

[`NSCoding`](/documentation/Foundation/NSCoding)

[`CustomStringConvertible`](/documentation/Swift/CustomStringConvertible)

[`CustomDebugStringConvertible`](/documentation/Swift/CustomDebugStringConvertible)

### Inherits From

[`SCNGeometry`](/documentation/SceneKit/SCNGeometry)

---

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