/*

 Copyright (C) 2014 Apple Inc. All Rights Reserved.

 See LICENSE.txt for this sample’s licensing information

 Abstract:

  CrumbPath is an MKOverlay model class representing a path that changes over time.

 */

@import MapKit;

@interface CrumbPath : NSObject <MKOverlay>

// Initialize the CrumbPath with the starting coordinate.

// The CrumbPath's boundingMapRect will be set to a sufficiently large square

// centered on the starting coordinate.

//

- (id)initWithCenterCoordinate:(CLLocationCoordinate2D)coord;

// Add a location observation. A MKMapRect containing the newly added point

// and the previously added point is returned so that the view can be updated

// in that rectangle.  If the added coordinate has not moved far enough from

// the previously added coordinate it will not be added to the list and 

// MKMapRectNull will be returned.

//

- (MKMapRect)addCoordinate:(CLLocationCoordinate2D)coord boundingMapRectChanged:(BOOL *)boundingMapRectChanged;

// Synchronously evaluate a block with the current buffer of points.

- (void)readPointsWithBlockAndWait:(void (^)(MKMapPoint *pointsArray, NSUInteger pointArrayCount))block;

@end