---
title: LitLightingModel.DiffuseModel.hammon
framework: realitykit
role: symbol
role_heading: Case
path: realitykit/litlightingmodel/diffusemodel-swift.enum/hammon
---

# LitLightingModel.DiffuseModel.hammon

Hammon diffuse, a physically based model that accounts for roughness.

## Declaration

```swift
case hammon
```

## See Also

### Choosing a diffuse model

- [LitLightingModel.DiffuseModel.lambertian](realitykit/litlightingmodel/diffusemodel-swift.enum/lambertian.md)
- [LitLightingModel.DiffuseModel.orenNayar](realitykit/litlightingmodel/diffusemodel-swift.enum/orennayar.md)