Class

CLCircularRegion

A circular geographic region, specified as a center point and radius.

Declaration

@interface CLCircularRegion : CLRegion

Overview

The CLCircularRegion class defines the location and boundaries for a circular geographic region. You can use instances of this class to define geo fences for a specific location. The crossing of a geo fence’s boundary causes the location manager to notify its delegate.

Topics

Initializing a Circular Region

- initWithCenter:radius:identifier:

Initializes and returns a region object defining a circular geographic area.

Accessing a Region’s Attributes

center

The center point of the geographic area.

radius

The radius (measured in meters) that defines the geographic area’s outer boundary.

Hit Testing in a Region

- containsCoordinate:

Returns a Boolean value indicating whether the geographic area contains the specified coordinate.

Relationships

Inherits From

See Also

Region Monitoring

Monitoring the User's Proximity to Geographic Regions

Use region monitoring to determine when the user enters or leaves a geographic region.

CLRegion

A base class representing an area that can be monitored.