---
title: SCNParticleInputMode.overLife
framework: scenekit
role: symbol
role_heading: Case
path: scenekit/scnparticleinputmode/overlife
---

# SCNParticleInputMode.overLife

The controller’s effect on a particle property is a function of the time since the particle’s birth.

## Declaration

```swift
case overLife
```

## See Also

### Constants

- [SCNParticleInputMode.overDistance](scenekit/scnparticleinputmode/overdistance.md)
- [SCNParticleInputMode.overOtherProperty](scenekit/scnparticleinputmode/overotherproperty.md)