[Yanel-dev] [Bug 8450] New: Calculate distance between fixed location and geo location of browser

[bugzilla at wyona.com]

http://bugzilla.wyona.com/cgi-bin/bugzilla/show_bug.cgi?id=8450

           Summary: Calculate distance between fixed location and geo
                    location of browser
           Product: Yanel
           Version: unspecified
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal (C)
          Priority: P2
         Component: General
        AssignedTo: bmessme at student.ethz.ch
        ReportedBy: michael.wechner at wyona.org
         QAContact: yanel-development at wyona.com


If geo location is enabled in Firefox, then Firefox will add the latitude and
longitude to the request, e.g.

lat=47.3865887&long=8.5184421

Now we want to calculate the distance from this "location of the browser" to
some other location, e.g. the location of a store (Miros City in Zurich).

Some mathematics on how to do this is explained at

http://www.movable-type.co.uk/scripts/latlong.html

which means we should implement this into a utility class/menthod, e.g.

public class GeoUtil {
   /**
    * @return distance between two locations
    */
   public long(Location here, Location there);
}

or rather try to find existing code, e.g.

http://stackoverflow.com/questions/837872/calculate-distance-in-meters-when-you-know-longitude-and-latitude-in-java

which is Apache license based and hence can be re-used inside Yanel.

We can then use this method to calculate the distance to various stores, e.g.

- Migros Zurich
- Migros Geneva
- Migros Basel

and hence determine which store is the closest or rather generate a list
ordered by the distance.


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