---
title: "unapplying(_:)"
framework: spatial
role: symbol
role_heading: Instance Method
path: "spatial/ray3dfloat/unapplying(_:)-6pcxp"
---

# unapplying(_:)

Returns a ray that’s transformed by the inverse of the specified projective transform.

## Declaration

```swift
func unapplying(_ transform: ProjectiveTransform3DFloat) -> Ray3DFloat
```

## Parameters

- `transform`: The projective transform.

## Discussion

Discussion Returns The transformed ray. This function applies the transform to the ray’s origin and direction.