---
title: "init(truncating:)"
framework: spatial
role: symbol
role_heading: Initializer
path: "spatial/affinetransform3dfloat/init(truncating:)-8jfn6"
---

# init(truncating:)

## Declaration

```swift
init(truncating matrix: simd_float4x4)
```

## Parameters

- `matrix`: The source matrix.

## Return Value

Return Value A new affine transform structure.

## Discussion

Discussion Returns a new affine transform structure from the specified 4 x 4 matrix truncated to a  4 x 3 matrix.