@Override
public Double distance(Identifier<Double> id) {
MDIdentifier to = (MDIdentifier) id;
if (this.idSpace.getDimensions() != to.getIdSpace().getDimensions()) {
throw new RuntimeException(
"Cannot compute a distance between MDIntentifiers in spaces with unequal dimensions");
}
double temp;
if (this.idSpace.getDistFunc() == DistanceMD.EUCLIDEAN) {
double squarredResult = 0;
for (int i = 0; i < this.idSpace.getDimensions(); i++) {
if (this.idSpace.isWrapAround()) {
temp =
Math.min(
Math.abs(this.coordinates[i] - to.getCoordinate(i)),
Math.min(
this.idSpace.getModulus(i) + this.coordinates[i] - to.getCoordinate(i),
this.idSpace.getModulus(i) - this.coordinates[i] + to.getCoordinate(i)));
} else {
temp = Math.abs(this.coordinates[i] - to.getCoordinate(i));
}
squarredResult += Math.pow(temp, 2);
}
return Math.sqrt(squarredResult);
}
if (this.idSpace.getDistFunc() == DistanceMD.MANHATTAN) {
double result = 0;
for (int i = 0; i < this.idSpace.getDimensions(); i++) {
if (this.idSpace.isWrapAround()) {
temp =
Math.min(
Math.abs(this.coordinates[i] - to.getCoordinate(i)),
Math.min(
this.idSpace.getModulus(i) + this.coordinates[i] - to.getCoordinate(i),
this.idSpace.getModulus(i) - this.coordinates[i] + to.getCoordinate(i)));
} else {
temp = Math.abs(this.coordinates[i] - to.getCoordinate(i));
}
result += temp;
}
return result;
}
return 0.0;
}
