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OptaPlanner solves planning problems. This lightweight, embeddable planning engine implements powerful and scalable algorithms to optimize business resource scheduling and planning. This module contains the examples which demonstrate how to use it in a normal Java application.

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package org.optaplanner.examples.tsp.domain.location;

import com.thoughtworks.xstream.annotations.XStreamAlias;

/**
 * The cost between 2 locations is a straight line: the euclidean distance between their GPS coordinates.
 * Used with {@link DistanceType#AIR_DISTANCE}.
 */
@XStreamAlias("TspAirLocation")
public class AirLocation extends Location {

    public AirLocation() {
    }

    public AirLocation(long id, double latitude, double longitude) {
        super(id, latitude, longitude);
    }

    @Override
    public long getDistanceTo(Location location) {
        double distance = getAirDistanceDoubleTo(location);
        // Multiplied by 1000 to avoid floating point arithmetic rounding errors
        return (long) (distance * 1000.0 + 0.5);
    }

}