/**
* Computes the absolute distance to the other coordinate's latitude
*
* @methodtype get
* @methodproperty regular
*/
public double getLatitudinalDistance(SphericCoordinate other) {
if (other == null) {
throw new IllegalArgumentException("Other coordinate must not be null");
}
return Math.abs(other.getLatitude() - this.getLatitude());
}
@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;
}
/**
* @Pattern ( name = "Template" participants = { "AbstactCoordinate", "CartesianCoordinate",
* "SphericCoordinate" } )
*/
@Override
protected double getRadialDistance(Coordinate other) {
if (other == null) {
throw new IllegalArgumentException("Other coordinate must not be null");
}
SphericCoordinate sphOther = convertToSpheric(other);
double radLatitude = Math.toRadians(this.getLatitude());
double otherRadLatitude = Math.toRadians(sphOther.getLatitude());
double lonDistance = Math.toRadians(this.getLongitudinalDistance(sphOther));
return (Math.acos(
Math.sin(radLatitude) * Math.sin(otherRadLatitude)
+ Math.cos(radLatitude) * Math.cos(otherRadLatitude) * Math.cos(lonDistance)));
}
/**
* @param other the other Coordinate-Object
* @return distance between the latitude-values of both coordinates as double-value
* @methodtype query
*/
public double getLatitudinalDistance(SphericCoordinate secondCoordinate) {
// preconditions
assertNotNull(secondCoordinate);
double latitudinalDistance = this.latitude - secondCoordinate.getLatitude();
latitudinalDistance = Math.abs(latitudinalDistance);
// check for shortest way
if (latitudinalDistance > 90) {
latitudinalDistance = 180 - latitudinalDistance;
}
// postconditions
assertIsValidDistance(latitudinalDistance);
return latitudinalDistance;
}
/**
* 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;
}
