---
title: "init(_:)"
framework: simd
role: symbol
role_heading: Initializer
path: "simd/simd_double4x4/init(_:)-1ara7"
---

# init(_:)

Returns a new 4 x 4 double-precision matrix from a Spatial affine transform.

## Declaration

```swift
init(_ affineTransform: AffineTransform3DFloat)
```

## Discussion

Discussion Values are rounded to a representable value, if necessary. note: This function is provided as a convenience. All Spatial storage and calculations are single-precision.