Skip to content

Instantly share code, notes, and snippets.

@danielgomezrico

danielgomezrico/DistanceCalculator.java

Last active January 6, 2021 00:37
Show Gist options

  • Select an option

    Learn more about clone URLs
  • Save danielgomezrico/992c2f35d04a42a99ea5 to your computer and use it in GitHub Desktop.

Select an option

Learn more about clone URLs
Save danielgomezrico/992c2f35d04a42a99ea5 to your computer and use it in GitHub Desktop.
Download ZIP

Revisions

  1. danielgomezrico revised this gist Jun 21, 2016. 1 changed file with 18 additions and 9 deletions.
    27 changes: 18 additions & 9 deletions DistanceCalculator.java
    View file
    Original file line number Diff line number Diff line change
    @@ -1,30 +1,39 @@
    import static java.lang.Math.acos;
    import static java.lang.Math.cos;
    import static java.lang.Math.sin;

    /**
    * Calculate distance between coordinates.
    */
    public class DistanceCalculator {

    static double PI_RAD = Math.PI / 180.0;

    /**
    * Use Great Circle distance formula to calculate distance between 2 coordinates in meters.
    */
    public double greatCircleInMeters(double lat1, double long1, double lat2,
    double long2) {
    return greatCircleInKilometers(lat1, long1, lat2, long2) * 1000;
    public double greatCircleInFeet(LatLng latLng1, LatLng latLng2) {
    return greatCircleInKilometers(latLng1.latitude, latLng1.longitude, latLng2.latitude,
    latLng2.longitude) * 3280.84;
    }

    /**
    * Use Great Circle distance formula to calculate distance between 2 coordinates in meters.
    */
    public double greatCircleInMeters(LatLng latLng1, LatLng latLng2) {
    return greatCircleInKilometers(latLng1.latitude, latLng1.longitude, latLng2.latitude,
    latLng2.longitude) * 1000;
    }

    /**
    * Use Great Circle distance formula to calculate distance between 2 coordinates in kilometers.
    * https://software.intel.com/en-us/blogs/2012/11/25/calculating-geographic-distances-in-location-aware-apps
    */
    public double greatCircleInKilometers(double lat1, double long1, double lat2,
    double long2) {
    public double greatCircleInKilometers(double lat1, double long1, double lat2, double long2) {
    double phi1 = lat1 * PI_RAD;
    double phi2 = lat2 * PI_RAD;
    double lam1 = long1 * PI_RAD;
    double lam2 = long2 * PI_RAD;

    return 6371.01 * Math.acos(
    Math.sin(phi1) * Math.sin(phi2) + Math.cos(phi1) * Math.cos(phi2) * Math.cos(lam2 - lam1));
    return 6371.01 * acos(sin(phi1) * sin(phi2) + cos(phi1) * cos(phi2) * cos(lam2 - lam1));
    }
    }
    }
  2. danielgomezrico created this gist Nov 19, 2015.
    30 changes: 30 additions & 0 deletions DistanceCalculator.java
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,30 @@
    /**
    * Calculate distance between coordinates.
    */
    public class DistanceCalculator {

    static double PI_RAD = Math.PI / 180.0;

    /**
    * Use Great Circle distance formula to calculate distance between 2 coordinates in meters.
    */
    public double greatCircleInMeters(double lat1, double long1, double lat2,
    double long2) {
    return greatCircleInKilometers(lat1, long1, lat2, long2) * 1000;
    }

    /**
    * Use Great Circle distance formula to calculate distance between 2 coordinates in kilometers.
    * https://software.intel.com/en-us/blogs/2012/11/25/calculating-geographic-distances-in-location-aware-apps
    */
    public double greatCircleInKilometers(double lat1, double long1, double lat2,
    double long2) {
    double phi1 = lat1 * PI_RAD;
    double phi2 = lat2 * PI_RAD;
    double lam1 = long1 * PI_RAD;
    double lam2 = long2 * PI_RAD;

    return 6371.01 * Math.acos(
    Math.sin(phi1) * Math.sin(phi2) + Math.cos(phi1) * Math.cos(phi2) * Math.cos(lam2 - lam1));
    }
    }