org.opentripplanner.ext.fares.model.Distance Maven / Gradle / Ivy

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The OpenTripPlanner multimodal journey planning system

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package org.opentripplanner.ext.fares.model;

import org.opentripplanner.framework.tostring.ValueObjectToStringBuilder;

public class Distance {

  private static final int METERS_PER_KM = 1000;
  private final double meters;

  /** Returns a Distance object representing the given number of meters */
  public Distance(double value) {
    this.meters = value;
  }

  /** Returns a Distance object representing the given number of meters */
  public static Distance ofMeters(double value) {
    return new Distance(value);
  }

  /** Returns a Distance object representing the given number of kilometers */
  public static Distance ofKilometers(double value) {
    return new Distance(value * METERS_PER_KM);
  }

  /** Returns the distance in meters */
  public double toMeters() {
    return this.meters;
  }

  @Override
  public boolean equals(Object other) {
    if (other instanceof Distance distance) {
      return distance.meters == this.meters;
    } else {
      return false;
    }
  }

  @Override
  public String toString() {
    if (meters < METERS_PER_KM) {
      return ValueObjectToStringBuilder.of().addNum(meters, "m").toString();
    } else {
      return ValueObjectToStringBuilder.of().addNum(meters / 1000, "km").toString();
    }
  }
}