/*
 * Copyright 1998-2014 University Corporation for Atmospheric Research/Unidata
 *
 *   Portions of this software were developed by the Unidata Program at the
 *   University Corporation for Atmospheric Research.
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 */

package ucar.unidata.geoloc;

/**
 * An immutable LatLonPoint
 *
 * @author caron
 * @since 7/29/2014
 */
public class LatLonPointImmutable implements LatLonPoint {
  public static final LatLonPointImmutable INVALID = new LatLonPointImmutable(Double.POSITIVE_INFINITY, Double.POSITIVE_INFINITY);
  private final double lat, lon;

  public LatLonPointImmutable(double lat, double lon) {
    this.lat = lat;
    this.lon = lon;
  }

  public LatLonPointImmutable(LatLonPoint pt) {
    this.lat = pt.getLatitude();
    this.lon = pt.getLongitude();
  }

  @Override
  public double getLongitude() {
    return lon;
  }

  @Override
  public double getLatitude() {
    return lat;
  }

  @Override
  public boolean equals(LatLonPoint pt) {
    if (Double.compare(pt.getLatitude(), lat) != 0) return false;
    if (Double.compare(pt.getLongitude(), lon) != 0) return false;
    return true;
  }

  @Override
  public boolean equals(Object o) {
    if (this == o) return true;
    if (!(o instanceof LatLonPoint)) return false;
    LatLonPoint that = (LatLonPoint) o;
    return equals(that);
  }

  @Override
  public int hashCode() {
    int result;
    long temp;
    temp = Double.doubleToLongBits(lat);
    result = (int) (temp ^ (temp >>> 32));
    temp = Double.doubleToLongBits(lon);
    result = 31 * result + (int) (temp ^ (temp >>> 32));
    return result;
  }
}