---
title: radiusStride
framework: metal
role: symbol
role_heading: Instance Property
path: metal/mtl4accelerationstructuremotioncurvegeometrydescriptor/radiusstride
---

# radiusStride

Sets the stride, in bytes, between radii in the radius buffer.

## Declaration

```swift
var radiusStride: Int { get set }
```

## Discussion

Discussion You are responsible for ensuring this property is set to a multiple of the size corresponding to the radiusFormat. All keyframes share the same radius stride. This property defaults to 0 bytes, indicating that the radii are tightly packed.