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# MKCircle

A circular overlay with a configurable radius that you center on a geographic coordinate.

```
class MKCircle
```

## Overview

This class defines the portion of the map that the overlay covers. To draw the region, return an [`MKCircleRenderer`](/documentation/MapKit/MKCircleRenderer) object from the [`mapView(_:rendererFor:)`](/documentation/MapKit/MKMapViewDelegate/mapView(_:rendererFor:)) method of your map view delegate.

## Topics

### Creating a circle overlay

[`init(center:radius:)`](/documentation/MapKit/MKCircle/init(center:radius:))

Creates and returns a circle object using the specified coordinate and radius.

[`init(mapRect:)`](/documentation/MapKit/MKCircle/init(mapRect:))

Creates and returns a circle object that derives the circular area from the specified rectangle.

### Accessing the overlay’s attributes

[`coordinate`](/documentation/MapKit/MKCircle/coordinate)

The center point of the circular area, specified as a latitude and longitude.

[`radius`](/documentation/MapKit/MKCircle/radius)

The radius of the circular area, in meters.

[`boundingMapRect`](/documentation/MapKit/MKCircle/boundingMapRect)

The bounding rectangle of the circular area.


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