Example #1
0
  public void ensureIncreasingTime() {
    if (getPositionCount() < 2) return;

    long completeTime = getTime(); // ms
    double completeDistance = getDistance(); // m
    double averageSpeed = completeTime > 0 ? completeDistance / completeTime * 1000 : 1.0; // m/s

    List<P> positions = getPositions();
    P first = positions.get(0);
    if (!first.hasTime()) first.setTime(fromCalendar(Calendar.getInstance(UTC)));

    P previous = first;
    for (int i = 1; i < positions.size(); i++) {
      P next = positions.get(i);
      CompactCalendar time = next.getTime();
      if (time == null || time.equals(previous.getTime())) {
        Double distance = next.calculateDistance(previous);
        Long millis = distance != null ? (long) (distance / averageSpeed * 1000) : null;
        if (millis == null || millis < 1000) millis = 1000L;
        next.setTime(
            fromMillisAndTimeZone(
                previous.getTime().getTimeInMillis() + millis, previous.getTime().getTimeZoneId()));
      }
      previous = next;
    }
  }
Example #2
0
 public int[] getPositionsWithinDistanceToPredecessor(double distance) {
   List<Integer> result = new ArrayList<>();
   List<P> positions = getPositions();
   if (positions.size() <= 2) return new int[0];
   P previous = positions.get(0);
   for (int i = 1; i < positions.size() - 1; i++) {
     P next = positions.get(i);
     if (!next.hasCoordinates() || next.calculateDistance(previous) <= distance) result.add(i);
     else previous = next;
   }
   return toArray(result);
 }
Example #3
0
 /**
  * Removes duplicate adjacent {@link #getPositions() positions} from this route, leaving only
  * distinct neighbours
  */
 public void removeDuplicates() {
   List<P> positions = getPositions();
   P previous = null;
   int index = 0;
   while (index < positions.size()) {
     P next = positions.get(index);
     if (previous != null && (!next.hasCoordinates() || next.calculateDistance(previous) <= 0.0)) {
       positions.remove(index);
     } else index++;
     previous = next;
   }
 }
Example #4
0
  public int getClosestPosition(double longitude, double latitude, double threshold) {
    int closestIndex = -1;
    double closestDistance = MAX_VALUE;

    List<P> positions = getPositions();
    for (int i = 0; i < positions.size(); ++i) {
      P point = positions.get(i);
      Double distance = point.calculateDistance(longitude, latitude);
      if (distance != null && distance < closestDistance && distance < threshold) {
        closestDistance = distance;
        closestIndex = i;
      }
    }
    return closestIndex;
  }