---
title: roll
framework: gamecontroller
role: symbol
role_heading: Instance Property
path: gamecontroller/gceulerangles/roll
---

# roll

The roll of the controller in radians.

## Declaration

```swift
var roll: Double
```

## Discussion

Discussion A roll is a rotation around the z-axis that passes through the controller from its top to bottom. The sign of the roll follows the right-hand rule. If you point your right thumb along the positive axis, the curl of your other fingers points in the positive direction around that axis.

## See Also

### Getting Euler Angle Values

- [pitch](gamecontroller/gceulerangles/pitch.md)
- [yaw](gamecontroller/gceulerangles/yaw.md)