---
title: cornerRadius
framework: scenekit
role: symbol
role_heading: Instance Property
path: scenekit/scnplane/cornerradius
---

# cornerRadius

The radius of curvature for the plane’s corners. Animatable.

## Declaration

```swift
var cornerRadius: CGFloat { get set }
```

## Discussion

Discussion The minimum (and default) corner radius is 0.0, specifying square corners. Set this property to a nonzero value to add rounded corners to the plane. Setting a corner radius of less than zero creates an empty geometry. The maximum corner radius is half the plane’s smaller dimension. For example, if a plane’s width and height properties are both 10.0, setting a corner radius of 5.0 gives the plane a circular shape, and increasing the corner radius beyond 5.0 has no effect. If a plane has width 10.0 and height 5.0, the maximum corner radius is 2.5, creating a rectangular shape with circular endcaps. You can animate changes to this property’s value. See Animating SceneKit Content.

## See Also

### Adding Rounded Corners

- [cornerSegmentCount](scenekit/scnplane/cornersegmentcount.md)