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# GeometryEffect

An effect that changes the visual appearance of a view, largely without
changing its ancestors or descendants.

```
nonisolated protocol GeometryEffect : Animatable, ViewModifier where Self.Body == Never
```

## Overview

The only change the effect makes to the view’s ancestors and descendants is
to change the coordinate transform to and from them.

## Topics

### Applying effects

[`effectValue(size:)`](/documentation/SwiftUI/GeometryEffect/effectValue(size:))

Returns the current value of the effect.

[`ignoredByLayout()`](/documentation/SwiftUI/GeometryEffect/ignoredByLayout())

Returns an effect that produces the same geometry transform as this
effect, but only applies the transform while rendering its view.


---

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