text: //
  //  MKMapView+TrailsKit.h
  //  TrailsKit
  //
  //  Created by Mike Mertsock on 9/3/14.
  //  Copyright (c) 2014 Esker Apps. All rights reserved.
  //
  
  #import <MapKit/MapKit.h>
  #import "TrailsKitGeometry.h"
  #import "TKVisibilityConstraint.h"
  
  @interface MKMapView (TrailsKit)
  
  - (TKMapScale)tk_metersPerDevicePoint;
  
  - (TKVisibilityContext)tk_visibilityContext;
  
  - (TKVisibilityContext)tk_visibilityContextForRegion:(MKCoordinateRegion)region;
  
  @end
  