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# superEllipticPower

A vector that controls the roundness of a superelliptical light in the x- and y-axis directions.

```
var superEllipticPower: vector_float2 { get set }
```

## Discussion

This property applies only if the inherited [`lightType`](/documentation/ModelIO/MDLLight/lightType) property’s value is [`MDLLightType.superElliptical`](/documentation/ModelIO/MDLLightType/superElliptical). A superellipse is a two-dimensional figure that can vary in shape according to two parameters. The x- and y-components of this vector control the general shape of the figure along the corresponding axes:

- A value less than `1.0` produces a star-like shape, with points in the direction of each axis.
- A value of exactly `1.0` produces a diamond shape.
- A value of exactly `2.0` produces a circle.
- A value greater than `2.0` produces a rectangle with rounded corners, with increasing values decreasing the corner radius.

---

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