---
title: boundingBox
framework: modelio
role: symbol
role_heading: Instance Property
path: modelio/mdllightprobeirradiancedatasource/boundingbox
---

# boundingBox

The bounding region of the scene to which light probes are being added.

## Declaration

```swift
var boundingBox: MDLAxisAlignedBoundingBox { get set }
```

## Discussion

Discussion When you call the MDLAsset placeLightProbes(withDensity:heuristic:using:) method to automatically distribute light probes in a scene, Model I/O reads this property to ask your code which regions should be evaluated for light probe placement.

## See Also

### Providing Light Probe Information

- [sphericalHarmonicsLevel](modelio/mdllightprobeirradiancedatasource/sphericalharmonicslevel.md)
- [sphericalHarmonicsCoefficients(atPosition:)](modelio/mdllightprobeirradiancedatasource/sphericalharmonicscoefficients(atposition:).md)