Class: CLLocationCoordinate2D

Inherits:
Object
  • Object
show all
Defined in:
lib/sugarcube/core_location.rb

Overview

denver = CLLocationCoordinate2D.new(39.764032,-104.963112) cincinnati = CLLocationCoordinate2D.new(39.267024,-84.251736) denver.distance_to(cincinnati).miles denver.delta_miles()

Instance Method Summary collapse

Instance Method Details

#delta_miles(dx, dy) ⇒ Object 



7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
 
# File 'lib/sugarcube/core_location.rb', line 7

def delta_miles(dx, dy)
  earth_radius = 3963.1

  radius_at_latitude = earth_radius * Math.cos(self.latitude * Math::PI / 180.0)
  if radius_at_latitude > 0
    delta_lng = dx / radius_at_latitude
    delta_lng *= 180.0 / Math::PI
  else
    delta_lng = 0
  end

  delta_lat = dy / earth_radius
  delta_lat *= 180.0 / Math::PI
  CLLocationCoordinate2D.new(self.latitude + delta_lat, self.longitude + delta_lng)
end

#distance_to(cl_location_2d) ⇒ Object 



23
24
25
26
27
 
# File 'lib/sugarcube/core_location.rb', line 23

def distance_to(cl_location_2d)
  my_location = CLLocation.alloc.initWithLatitude(self.latitude, longitude:self.longitude)
  other_location = CLLocation.alloc.initWithLatitude(cl_location_2d.latitude, longitude:cl_location_2d.longitude)
  my_location.distanceFromLocation(other_location)
end