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# backFaceCulling

An option to ignore faces not oriented toward the camera.

```
static let backFaceCulling: SCNHitTestOption
```

## Discussion

The value for this key is an <doc://com.apple.documentation/documentation/Foundation/NSNumber> object containing a Boolean value. The default value is <doc://com.apple.documentation/documentation/Swift/true>, specifying that back-facing polygons will not be returned as hit-test results.

---

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