---
title: "flip(along:)"
framework: spatial
role: symbol
role_heading: Instance Method
path: "spatial/projectivetransform3d/flip(along:)"
---

# flip(along:)

Flips a projective transform along the specified axis.

## Declaration

```swift
mutating func flip(along axis: Axis3D)
```

## Parameters

- `axis`: An axis structure that specifies the flip axis.

## See Also

### Transforming a 3D projective transform structure

- [sheared(_:)](spatial/projectivetransform3d/sheared(_:).md)
- [AxisWithFactors](spatial/axiswithfactors.md)
- [Axis3D](spatial/axis3d.md)
- [flipped(along:)](spatial/projectivetransform3d/flipped(along:).md)