---
title: "addRoundedRect(in:cornerWidth:cornerHeight:transform:)"
framework: coregraphics
role: symbol
role_heading: Instance Method
path: "coregraphics/cgmutablepath/addroundedrect(in:cornerwidth:cornerheight:transform:)"
---

# addRoundedRect(in:cornerWidth:cornerHeight:transform:)

Adds a subpath to the path, in the shape of a rectangle with rounded corners.

## Declaration

```swift
func addRoundedRect(in rect: CGRect, cornerWidth: CGFloat, cornerHeight: CGFloat, transform: CGAffineTransform = .identity)
```

## Parameters

- `rect`: The rectangle to add, specified in user space coordinates.
- `cornerWidth`: The horizontal size, in user space coordinates, for rounded corner sections.
- `cornerHeight`: The vertical size, in user space coordinates, for rounded corner sections.
- `transform`: An affine transform to apply to the rectangle before adding to the path. Defaults to the identity transform if not specified.

## Discussion

Discussion This convenience method is equivalent to a move operation to start the subpath followed by a series of arc and line operations that construct the rounded rectangle. 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 closed subpath oriented in the clockwise direction.

## See Also

### Constructing a Graphics Path

- [move(to:transform:)](coregraphics/cgmutablepath/move(to:transform:).md)
- [addLine(to:transform:)](coregraphics/cgmutablepath/addline(to:transform:).md)
- [addLines(between:transform:)](coregraphics/cgmutablepath/addlines(between:transform:).md)
- [addRect(_:transform:)](coregraphics/cgmutablepath/addrect(_:transform:).md)
- [addRects(_:transform:)](coregraphics/cgmutablepath/addrects(_:transform:).md)
- [addEllipse(in:transform:)](coregraphics/cgmutablepath/addellipse(in:transform:).md)
- [addArc(center:radius:startAngle:endAngle:clockwise:transform:)](coregraphics/cgmutablepath/addarc(center:radius:startangle:endangle:clockwise:transform:).md)
- [addArc(tangent1End:tangent2End:radius:transform:)](coregraphics/cgmutablepath/addarc(tangent1end:tangent2end:radius:transform:).md)
- [addRelativeArc(center:radius:startAngle:delta:transform:)](coregraphics/cgmutablepath/addrelativearc(center:radius:startangle:delta:transform:).md)
- [addCurve(to:control1:control2:transform:)](coregraphics/cgmutablepath/addcurve(to:control1:control2:transform:).md)
- [addQuadCurve(to:control:transform:)](coregraphics/cgmutablepath/addquadcurve(to:control:transform:).md)
- [addPath(_:transform:)](coregraphics/cgmutablepath/addpath(_:transform:).md)
- [closeSubpath()](coregraphics/cgmutablepath/closesubpath().md)