---
title: spin
framework: quartzcore
role: symbol
role_heading: Instance Property
path: quartzcore/caemittercell/spin
---

# spin

The rotational velocity, measured in radians per second, to apply to the cell. Animatable.

## Declaration

```swift
var spin: CGFloat { get set }
```

## Discussion

Discussion The spin of the cell will vary by a random amount with the range specified by spinRange. The default value of this property is 0.0.

## See Also

### Setting Emitter Cell Motion Attributes

- [spinRange](quartzcore/caemittercell/spinrange.md)
- [emissionLatitude](quartzcore/caemittercell/emissionlatitude.md)
- [emissionLongitude](quartzcore/caemittercell/emissionlongitude.md)
- [emissionRange](quartzcore/caemittercell/emissionrange.md)