Android Open Source - noxdroidandroidapp G P S Util

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Back to project page noxdroidandroidapp.

License

The source code is released under:

MIT License

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Java Source Code

package dk.itu.noxdroid.util;
/* w ww.j a va 2s.co  m*/
import org.gavaghan.geodesy.Ellipsoid;
import org.gavaghan.geodesy.GeodeticCalculator;
import org.gavaghan.geodesy.GeodeticCurve;
import org.gavaghan.geodesy.GlobalCoordinates;

public class GPSUtil {
  // instantiate the calculator
  private static GeodeticCalculator geoCalc = new GeodeticCalculator();
      // select a reference elllipsoid
  private static Ellipsoid reference = Ellipsoid.WGS84;
  
  /***
   * 
   * @param gc1 GPS coordinate 
   * @param gc2 GPS coordinate
   * @return the distance between two gps coordinates 
   */
  public static double getGPSDelta(GlobalCoordinates gc1, GlobalCoordinates gc2) {
    if (geoCalc == null) {
      geoCalc = new  GeodeticCalculator();
    }
    
    GeodeticCurve geoCurve = geoCalc.calculateGeodeticCurve(reference, gc1, gc2);
    
    return geoCurve.getEllipsoidalDistance() / 1000000.0 ;
  }
}

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