Guest User

Programming Praxis Tracking Santa

a guest
Dec 24th, 2010
78
Never
Not a member of Pastebin yet? Sign Up, it unlocks many cool features!
  1. #!/usr/bin/env ruby
  2. require 'net/http'
  3.  
  4. def law_of_cosine(lat1, long1, lat2, long2)
  5.   Math.acos( (Math.sin(lat1)*Math.sin(lat2)) + (Math.cos(lat1)*Math.cos(lat2)) * Math.cos((long1-long2).abs))
  6. end
  7.  
  8. def great_circle_distance(rads)
  9.   6371.01 * rads
  10. end
  11.  
  12. santas_distance = 0
  13. d = { "firstlat" => 0, "firstlng" => 0, "secondlat" => 0, "secondlng" => 0}
  14. url = URI.parse('http://www.noradsanta.org/js/data.js')
  15. req = Net::HTTP::Get.new(url.path)
  16. resp = Net::HTTP.start(url.host, url.port) {|http|
  17.   http.request(req)
  18. }
  19.  
  20. resp.body.each do |line|
  21.   line.chomp
  22.   puts line
  23.   if line.include? "lat" and d['firstlat'] == 0
  24.     arr = line.map {|x| x[/[0-9]*\.[0-9]+|[0-9]+/]}
  25.     d['firstlat'] = arr[0].to_i
  26.   elsif line.include? "lat"
  27.     arr = line.map {|x| x[/[0-9]*\.[0-9]+|[0-9]+/]}
  28.     d['secondlat'] = arr[0].to_i
  29.   end
  30.   if line.include? "lng" and d['firstlng'] == 0
  31.     arr = line.map {|x| x[/[0-9]*\.[0-9]+|[0-9]+/]}
  32.     d['firstlng'] = arr[0].to_i
  33.   elsif line.include? "lng"
  34.     arr = line.map {|x| x[/[0-9]*\.[0-9]+|[0-9]+/]}
  35.     d['secondlng'] = arr[0].to_i
  36.   end
  37.   if d['firstlat'] != 0 and d['secondlat'] != 0 and d['firstlng'] != 0 and d['secondlng'] != 0
  38.     rads = law_of_cosine(d['firstlat'], d['firstlng'], d['secondlat'], d['secondlng'])
  39.     santas_distance += great_circle_distance(rads)
  40.     d['firstlat'] = 0
  41.     d['firstlng'] = 0
  42.     d['secondlat'] = 0
  43.     d['secondlng'] = 0
  44.   end
  45. end
  46. puts santas_distance
RAW Paste Data

Adblocker detected! Please consider disabling it...

We've detected AdBlock Plus or some other adblocking software preventing Pastebin.com from fully loading.

We don't have any obnoxious sound, or popup ads, we actively block these annoying types of ads!

Please add Pastebin.com to your ad blocker whitelist or disable your adblocking software.

×