---
title: collision
framework: realitykit
role: symbol
role_heading: Type Property
path: realitykit/arview/environment-swift.struct/sceneunderstanding-swift.struct/options-swift.struct/collision
---

# collision

The .collision option means that the reconstructed geometry can be used for collision queries (i.e. raycasting)

## Declaration

```swift
static let collision: ARView.Environment.SceneUnderstanding.Options
```