---
title: SCNLightAttenuationFalloffExponentKey
framework: scenekit
role: symbol
role_heading: Global Variable
path: scenekit/scnlightattenuationfalloffexponentkey
---

# SCNLightAttenuationFalloffExponentKey

The transition curve for the light’s intensity between its attenuation start and end distances.

## Declaration

```swift
let SCNLightAttenuationFalloffExponentKey: String
```

## See Also

### Constants

- [SCNLightAttenuationStartKey](scenekit/scnlightattenuationstartkey.md)
- [SCNLightAttenuationEndKey](scenekit/scnlightattenuationendkey.md)
- [SCNLightSpotInnerAngleKey](scenekit/scnlightspotinneranglekey.md)
- [SCNLightSpotOuterAngleKey](scenekit/scnlightspotouteranglekey.md)
- [SCNLightShadowFarClippingKey](scenekit/scnlightshadowfarclippingkey.md)
- [SCNLightShadowNearClippingKey](scenekit/scnlightshadownearclippingkey.md)