/**
* Computes the absolute distance to the other coordinate's longitude
*
* @methodtype get
* @methodproperty regular
*/
public double getLongitudinalDistance(SphericCoordinate other) {
if (other == null) {
throw new IllegalArgumentException("Other coordinate must not be null");
}
double result;
if (Math.signum(this.getLongitude()) != Math.signum(other.getLatitude())) {
result = Math.abs(this.getLongitude()) + Math.abs(other.getLongitude());
if (result > 180.) {
result = 360. - result;
}
} else {
result = Math.abs(Math.abs(this.getLongitude()) - Math.abs(other.getLongitude()));
}
return result;
}
@Override
public boolean equals(Object obj) {
if (obj == null) return false;
if (!(obj instanceof SphericCoordinate)) return false;
SphericCoordinate otherCoordinate = (SphericCoordinate) obj;
if (latitude == otherCoordinate.getLatitude()
&& longitude == otherCoordinate.getLongitude()
&& radius == otherCoordinate.getRadius()) return true;
else return false;
}
/**
* @param other the other Coordinate-Object
* @return distance between the longitude-values of both coordinates as double-value
* @methodtype query
*/
public double getLongitudinalDistance(SphericCoordinate secondCoordinate) {
// preconditions
assertNotNull(secondCoordinate);
double longitudinalDistance = this.longitude - secondCoordinate.getLongitude();
longitudinalDistance = Math.abs(longitudinalDistance);
// check for shortest way
if (longitudinalDistance > 180) {
longitudinalDistance = 360 - longitudinalDistance;
}
// postconditions
assertIsValidDistance(longitudinalDistance);
return longitudinalDistance;
}
