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# init(roundedRect:cornerWidth:cornerHeight:transform:)

Create an immutable path of a rounded rectangle.

```
init(roundedRect rect: CGRect, cornerWidth: CGFloat, cornerHeight: CGFloat, transform: UnsafePointer<CGAffineTransform>?)
```

## Parameters

`rect`

The rectangle to add.

`cornerWidth`

The width of the rounded corner sections.

`cornerHeight`

The height of the rounded corner sections.

`transform`

A pointer to an affine transformation matrix, or `NULL` if no transformation is needed. If specified, Core Graphics applies the transformation to the rectangle before it is added to the path.

## Return Value

A new, immutable path. You are responsible for releasing this object.

## Discussion

This is a convenience function that creates a path of an rounded rectangle. Using this convenience function is more efficient than creating a mutable path and adding an rectangle to it.

Each corner of the rounded rectangle is one-quarter of an ellipse with axes equal to the `cornerWidth` and `cornerHeight` parameters. The rounded rectangle forms a complete subpath and is oriented in the clockwise direction.

---

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