CoordinateConversionService.java

package service;

import api.v1.*;
import com.ibm.util.CoordinateConversion;
import exceptions.PoseidonException;
import play.mvc.Http;

public class CoordinateConversionService extends PoseidonService {

  public CoordinateConversionService(String USER) {
    super(USER);
  }

  public Position convertCoordinates(Position apiPosition) {
    CoordinateConversion coordinateConversion = new CoordinateConversion();
    Position result = clonePosition(apiPosition);
    checkPositionParams(apiPosition);

    switch (apiPosition.coordinateFormat) {
      case DECIMAL_DEGREES:
        result.dms = dec2dms(apiPosition, coordinateConversion);
        result.utm = dec2utm(apiPosition, coordinateConversion);
        break;
      case DEGREES_MINUTES_SECONDS:
        result.dec = dms2latlon(apiPosition, coordinateConversion);
        result.utm = dms2utm(apiPosition, coordinateConversion);
        break;
      case UTM:
        result.dec = utm2latlon(apiPosition, coordinateConversion);
        result.dms = utm2dms(apiPosition, coordinateConversion);
        break;
    }
    return result;
  }

  private void checkPositionParams(Position apiPosition) {
    switch (apiPosition.coordinateFormat){
      case DECIMAL_DEGREES:
        if ( apiPosition.dec.getLatitude() == null ){
          throw new PoseidonException(Http.Status.BAD_REQUEST,"Breddegrad ikke angitt");
        }
        if ( apiPosition.dec.getLongitude() == null ){
          throw new PoseidonException(Http.Status.BAD_REQUEST,"Lengdegrad ikke angitt");
        }
        break;
      case DEGREES_MINUTES_SECONDS:
        if ( apiPosition.dms.latDeg == null){
          throw new PoseidonException(Http.Status.BAD_REQUEST,"Breddegrad ikke angitt");
        }
        if ( apiPosition.dms.latMin == null){
          throw new PoseidonException(Http.Status.BAD_REQUEST,"Breddegrad minutter ikke angitt");
        }
        if ( apiPosition.dms.latSec == null){
          throw new PoseidonException(Http.Status.BAD_REQUEST,"Breddegrad sekunder ikke angitt");
        }
        if ( apiPosition.dms.longDeg == null){
          throw new PoseidonException(Http.Status.BAD_REQUEST,"Lengdegrad ikke angitt");
        }
        if ( apiPosition.dms.longMin == null){
          throw new PoseidonException(Http.Status.BAD_REQUEST,"Lengdegrad minutter ikke angitt");
        }
        if ( apiPosition.dms.longSec == null){
          throw new PoseidonException(Http.Status.BAD_REQUEST,"Lengdegrad  sekunder ikke angitt");
        }

        break;
      case UTM:
        if ( apiPosition.utm.zone == null ){
          throw new PoseidonException(Http.Status.BAD_REQUEST,"UTM Zone ikke angitt");
        }
        if ( apiPosition.utm.band == null ){
          throw new PoseidonException(Http.Status.BAD_REQUEST,"UTM Bånd ikke angitt");
        }
        if ( apiPosition.utm.easting== null ){
          throw new PoseidonException(Http.Status.BAD_REQUEST,"UTM Øst ikke angitt");
        }
        if ( apiPosition.utm.northing == null ){
          throw new PoseidonException(Http.Status.BAD_REQUEST,"UTM Nord ikke angitt");
        }
        break;

    }
  }

  public PositionDMS utm2dms(Position apiPosition, CoordinateConversion coordinateConversion) {

    PositionDMS dms = new PositionDMS();

    CoordinateConversion.UTM utm = new CoordinateConversion.UTM();

    PositionUTM apiUtm = apiPosition.utm;
    utm.zone = apiUtm.zone;
    utm.band = apiUtm.band;
    utm.northing = apiUtm.northing;
    utm.easting = apiUtm.easting;

    double[] latLong = coordinateConversion.utm2LatLon(utm);
    double[] coord = coordinateConversion.latLon2dms(latLong[0], latLong[1]);

    dms.latDirection = coord[0]>=0.0?"N":"S";
    dms.longDirection = coord[3]>=0.0?"E":"W";

    dms.latDeg = (int) Math.abs(coord[0]);
    dms.latMin = (int) coord[1];
    dms.latSec = (int) coord[2];
    dms.longDeg = (int) Math.abs(coord[3]);
    dms.longMin = (int) coord[4];
    dms.longSec = (int) coord[5];

    return dms;

  }

  public PositionDecimalDegrees utm2latlon(Position apiPosition, CoordinateConversion coordinateConversion) {
    PositionDecimalDegrees dec = new PositionDecimalDegrees();

    CoordinateConversion.UTM utm = new CoordinateConversion.UTM();
    PositionUTM apiUtm = apiPosition.utm;
    utm.zone = apiUtm.zone;
    utm.band = apiUtm.band;
    utm.northing = apiUtm.northing;
    utm.easting = apiUtm.easting;

    double[] latLong = coordinateConversion.utm2LatLon(utm);

    dec.setLatitude(latLong[0]);
    dec.setLongitude(latLong[1]);

    return dec;
  }

  public PositionUTM dms2utm(Position apiPosition, CoordinateConversion coordinateConversion) {
    PositionUTM utm = new PositionUTM();
    {
      PositionDMS dms = apiPosition.dms;
      Integer latDeg = dms.latDeg;
      Integer longDeg = dms.longDeg;
      if ( dms.latDirection != null) {
        if (dms.latDirection.equals("S")) latDeg = -Math.abs(latDeg);
      } else {
         dms.latDirection = dms.latDeg < 0 ? "S":"N";
      }
      if ( dms.longDirection != null) {
        if (dms.longDirection.equals("W")) longDeg = -Math.abs(longDeg);
      } else {
        dms.longDirection = dms.longDeg < 0 ? "W":"E";
      }
      double[] latLong = coordinateConversion.dms2LatLon(latDeg, dms.latMin, dms.latSec, longDeg, dms.longMin, dms.longSec);
      CoordinateConversion.UTM coord = coordinateConversion.latLon2UTM(latLong[0], latLong[1]);

      utm.zone = coord.zone;
      utm.band = coord.band;
      utm.easting = coord.easting;
      utm.northing = coord.northing;
    }
    return utm;
  }

  public PositionDecimalDegrees dms2latlon(Position apiPosition, CoordinateConversion coordinateConversion) {
    PositionDecimalDegrees dec = new PositionDecimalDegrees();
    {
      PositionDMS dms = apiPosition.dms;


      int latDeg = dms.latDeg!=null?dms.latDeg:0;
      latDeg = "N".equals(dms.latDirection)?Math.abs(latDeg):-Math.abs(latDeg);
      if ( dms.latDirection.equals("S")) latDeg = -latDeg;

      int latMin = dms.latMin!=null?dms.latMin:0;
      int latSec = dms.latSec!=null?dms.latSec:0;

      int lonDeg = dms.longDeg!=null?dms.longDeg:0;
      lonDeg = "E".equals(dms.longDirection)?Math.abs(lonDeg):-Math.abs(lonDeg);
      int lonMin = dms.longMin!=null?dms.longMin:0;
      int lonSec = dms.longSec!=null?dms.longSec:0;

      double[] latLong = coordinateConversion.dms2LatLon(latDeg, latMin, latSec, lonDeg, lonMin, lonSec);
      dec.setLatitude(latLong[0]);
      dec.setLongitude(latLong[1]);
    }
    return dec;
  }

  public PositionUTM dec2utm(Position apiPosition, CoordinateConversion coordinateConversion) {
    CoordinateConversion.UTM coord = coordinateConversion.latLon2UTM(apiPosition.dec.getLatitude(), apiPosition.dec.getLongitude());
    PositionUTM utm = new PositionUTM();
    utm.zone = coord.zone;
    utm.band = coord.band;
    utm.easting = coord.easting;
    utm.northing = coord.northing;
    return utm;
  }

  public PositionDMS dec2dms(Position apiPosition, CoordinateConversion coordinateConversion) {
    double[] coord = coordinateConversion.latLon2dms(apiPosition.dec.getLatitude(), apiPosition.dec.getLongitude());
    PositionDMS dms = new PositionDMS();
    dms.latDirection = coord[0] > 0 ? "N":"S";
    dms.longDirection = coord[3] > 0 ? "E":"W";
    dms.latDeg =  (int)(Math.abs(coord[0]));
    dms.latMin =  (int) coord[1];
    dms.latSec =  (int) coord[2];
    dms.longDeg = (int)(Math.abs(coord[3]));
    dms.longMin = (int) coord[4];
    dms.longSec = (int) coord[5];
    return dms;
  }

  private Position clonePosition(Position apiPosition) {
    Position p = new Position();
    p.id = apiPosition.id;
    p.name = apiPosition.name;
    p.alias = apiPosition.alias;
    p.coordinateFormat = apiPosition.coordinateFormat;
    p.isDeletable  = apiPosition.isDeletable;

    if (apiPosition.dec != null) {
      p.dec = new PositionDecimalDegrees();
      p.dec.setLatitude(apiPosition.dec.getLatitude());
      p.dec.setLongitude(apiPosition.dec.getLongitude());
    }

    if (apiPosition.dms != null) {
      p.dms = new PositionDMS();
      p.dms.latDeg = apiPosition.dms.latDeg;
      p.dms.latMin = apiPosition.dms.latMin;
      p.dms.latSec = apiPosition.dms.latSec;
      p.dms.latDirection = apiPosition.dms.latDirection;
      p.dms.longDeg = apiPosition.dms.longDeg;
      p.dms.longMin = apiPosition.dms.longMin;
      p.dms.longSec = apiPosition.dms.longSec;
      p.dms.longDirection = apiPosition.dms.longDirection;
    }
    if ( apiPosition.utm != null ) {
      p.utm = new PositionUTM();
      p.utm.zone = apiPosition.utm.zone;
      p.utm.band = apiPosition.utm.band;
      p.utm.easting = apiPosition.utm.easting;
      p.utm.northing = apiPosition.utm.northing;
    }
    if ( apiPosition.tags != null ) {
      p.tags = new PositionTag[apiPosition.tags.length];
      for(int i=0;i<apiPosition.tags.length;i++){
        PositionTag tag = apiPosition.tags[i];
        p.tags[i] = new PositionTag(tag.id,tag.name);
      }
    }
    return p;
  }

}