---
title: SCNAnimationEventBlock
framework: scenekit
role: symbol
role_heading: Type Alias
path: scenekit/scnanimationeventblock
---

# SCNAnimationEventBlock

Signature for the block called when an animation event triggers.

## Declaration

```swift
typealias SCNAnimationEventBlock = (any SCNAnimationProtocol, Any, Bool) -> Void
```

## Discussion

Discussion The block takes the following parameters: