---
title: eventSource
framework: Compute Graph
role: symbol
role_heading: Type Property
platforms: [iOS 27.0+, iPadOS 27.0+, Mac Catalyst 27.0+, macOS 27.0+, tvOS 27.0+, visionOS 27.0+]
path: computegraph/computenodegraph/stage/eventsource
---

# eventSource

A stage that receives events from a simulation (e.g. update or terminate), and initializes new particles for another simulation.

## Declaration

```swift
static let eventSource: ComputeNodeGraph.Stage
```