---
title: "applying(_:)"
framework: swift
role: symbol
role_heading: Instance Method
path: "swift/simd3/applying(_:)"
---

# applying(_:)

Returns a simd vector that’s transformed by the specified projective transform.

## Declaration

```swift
func applying(_ transform: ProjectiveTransform3DFloat) -> simd_float3
```

## Parameters

- `transform`: The projective transform.

## Discussion

Discussion Returns The transformed ray. This function applies the transform to the simd vector.