---
title: "formUnion(_:)"
framework: spatial
role: symbol
role_heading: Instance Method
path: "spatial/volumetric/formunion(_:)"
---

# formUnion(_:)

Sets the primitive to the union of itself and the specified primitive.

## Declaration

```swift
mutating func formUnion(_ other: Self)
```

## Parameters

- `other`: The volumetric entity that the function compares against.

## See Also

### Instance methods

- [contains(_:)](spatial/volumetric/contains(_:).md)
- [contains(point:)](spatial/volumetric/contains(point:).md)
- [contains(anyOf:)](spatial/volumetric/contains(anyof:).md)
- [formIntersection(_:)](spatial/volumetric/formintersection(_:).md)
- [intersection(_:)](spatial/volumetric/intersection(_:).md)
- [union(_:)](spatial/volumetric/union(_:).md)