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# MDLProbePlacement

Options affecting automatic placement of light probes in a scene, used with the [`placeLightProbes(withDensity:heuristic:using:)`](/documentation/ModelIO/MDLAsset/placeLightProbes(withDensity:heuristic:using:)) method.

```
enum MDLProbePlacement
```

## Topics

### Enumeration Cases

### Constants

[`MDLProbePlacement.irradianceDistribution`](/documentation/ModelIO/MDLProbePlacement/irradianceDistribution)

An option to examine the lighting conditions at various positions in the scene being evaluated, then place light probes only at the locations where each contributes optimally to scene lighting.

[`MDLProbePlacement.uniformGrid`](/documentation/ModelIO/MDLProbePlacement/uniformGrid)

An option to place light probes at each unit coordinate in a three-dimensional grid that evenly divides the region being evaluated.


---

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