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# isRotatedFromBase

A Boolean value indicating whether the view or any of its ancestors has ever had a rotation factor applied to its frame or bounds.

```
var isRotatedFromBase: Bool { get }
```

## Discussion

The value of this property is <doc://com.apple.documentation/documentation/Swift/true> if the view or any of its ancestors has had its [`frameRotation`](/documentation/AppKit/NSView/frameRotation) or [`boundsRotation`](/documentation/AppKit/NSView/boundsRotation) properties modified at any time. The value is still <doc://com.apple.documentation/documentation/Swift/true> if the rotation factor is changed to a nonzero value and then back to 0.

Use this information to optimize drawing and coordinate calculation. Do not use it to reflect the exact state of the view’s coordinate system.

## See Also

[`frameRotation`](/documentation/AppKit/NSView/frameRotation)

The angle of rotation, measured in degrees, applied to the view’s frame rectangle relative to its superview’s coordinate system.

[`boundsRotation`](/documentation/AppKit/NSView/boundsRotation)

The angle of rotation, measured in degrees, applied to the view’s bounds rectangle relative to its frame rectangle.


---

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