---
title: SCNParticleOrientationMode.billboardYAligned
framework: scenekit
role: symbol
role_heading: Case
path: scenekit/scnparticleorientationmode/billboardyaligned
---

# SCNParticleOrientationMode.billboardYAligned

The y-axis direction of each particle is always fixed with respect to the point of view camera.

## Declaration

```swift
case billboardYAligned
```

## Discussion

Discussion Use this mode to allow each particle to rotate freely about its y-axis (as determined by the particleAngle and particleAngularVelocity properties or the angle key), but prevent it from rotating around any other axis.

## See Also

### Constants

- [SCNParticleOrientationMode.billboardScreenAligned](scenekit/scnparticleorientationmode/billboardscreenaligned.md)
- [SCNParticleOrientationMode.billboardViewAligned](scenekit/scnparticleorientationmode/billboardviewaligned.md)
- [SCNParticleOrientationMode.free](scenekit/scnparticleorientationmode/free.md)