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  "identifier" : "/documentation/ARKit/ARPlaneAnchor/Alignment-swift.enum",
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# ARPlaneAnchor.Alignment

The kinds of alignment — horizontal or vertical — that a plane anchor can have.

```
enum Alignment
```

## Topics

### Alignment Values

[`ARPlaneAnchorAlignmentHorizontal`](/documentation/ARKit/ARPlaneAnchor/Alignment-swift.enum/horizontal)

The plane is perpendicular to gravity.

[`ARPlaneAnchorAlignmentVertical`](/documentation/ARKit/ARPlaneAnchor/Alignment-swift.enum/vertical)

The plane is parallel to gravity.

## Relationships

### Conforms To

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

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

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

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

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

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

---

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