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;
}
}
public long getTime() {
CompactCalendar minimum = null, maximum = null;
long totalTimeMilliSeconds = 0;
List<P> positions = getPositions();
P previous = null;
for (P next : positions) {
if (previous != null) {
Long time = previous.calculateTime(next);
if (time != null && time > 0) totalTimeMilliSeconds += time;
}
CompactCalendar calendar = next.getTime();
if (calendar == null) continue;
if (minimum == null || calendar.before(minimum)) minimum = calendar;
if (maximum == null || calendar.after(maximum)) maximum = calendar;
previous = next;
}
long maxMinusMin = minimum != null ? maximum.getTimeInMillis() - minimum.getTimeInMillis() : 0;
return max(maxMinusMin, totalTimeMilliSeconds);
}