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# fillRule

The fill rule used when filling the shape’s path.

```
var fillRule: CAShapeLayerFillRule { get set }
```

## Discussion

The possible values are shown in [Shape Fill Mode Values](/documentation/QuartzCore/shape-fill-mode-values). The default is [`nonZero`](/documentation/QuartzCore/CAShapeLayerFillRule/nonZero). See [Winding Rules](https://developer.apple.com/library/archive/documentation/Cocoa/Conceptual/CocoaDrawingGuide/Paths/Paths.html#//apple_ref/doc/uid/TP40003290-CH206-BAJIJJGD) for examples of the two fill rules.

---

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