//LatLon class
class LatLon {
  float latitude = 0;
  float longitude = 0;

  //get lat
  float getLat() {
    return latitude;
  }

  //get lon
  float getLon() {
    return longitude;
  }

  //make the XML request
  void requestLatLon() {
    //get all xml source and put into a single string
    String url = "http://timhibbard.com/webservices/engraphgps/engraph.asmx/GetTimsLocation";
    String[] lines = loadStrings(url);
    String xml = join(lines, " ");
    
    //search for latitude
    String lookforlat ="<Lat>";
    String endlat = "</Lat>";
    latitude = float(TextBetween(xml,lookforlat,endlat));

    //search for longitude
    String lookforlon ="<Lon>";
    String endlon = "</Lon>";
    longitude = float(TextBetween(xml,lookforlon,endlon));
  }

  //a function that returns a substring
  String TextBetween(String s, String before, String after) {
    String found = "";
    int start = s.indexOf(before); //index of beginning tag
    if (start==-1) return "";//if we don't find anything send back a blank string
    start+=before.length();//move to end of beginning tag
    int end = s.indexOf(after,start);//find end of end tag
    if(end==-1) return ""; //if we don't find anything send back a blank string
    return s.substring(start,end);
  }
}