---
title: "union(_:)"
framework: realitykit
role: symbol
role_heading: Instance Method
path: "realitykit/boundingbox/union(_:)-g4th"
---

# union(_:)

Creates a bounding box containing the current bounds and the specified point.

## Declaration

```swift
func union(_ point: SIMD3<Float>) -> BoundingBox
```

## Parameters

- `point`: A point in space.

## Return Value

Return Value The new bounding box.

## See Also

### Expanding boxes

- [union(_:)](realitykit/boundingbox/union(_:)-1y8hw.md)
- [formUnion(_:)](realitykit/boundingbox/formunion(_:)-5iy03.md)
- [formUnion(_:)](realitykit/boundingbox/formunion(_:)-6itj9.md)