/**
* Finds all egress paths from to coordinate to end stop and adds routers to egressRouter
*
* @param request
* @param egressRouter
*/
private void findEgressPaths(ProfileRequest request, Map<LegMode, StreetRouter> egressRouter) {
// For egress
// TODO: this must be reverse search
for (LegMode mode : request.egressModes) {
StreetRouter streetRouter = new StreetRouter(transportNetwork.streetLayer);
streetRouter.transitStopSearch = true;
streetRouter.dominanceVariable = StreetRouter.State.RoutingVariable.DURATION_SECONDS;
if (egressUnsupportedModes.contains(mode)) {
continue;
}
// TODO: add support for bike sharing
streetRouter.streetMode = StreetMode.valueOf(mode.toString());
streetRouter.profileRequest = request;
streetRouter.timeLimitSeconds = request.getTimeLimit(mode);
if (streetRouter.setOrigin(request.toLat, request.toLon)) {
streetRouter.route();
TIntIntMap stops = streetRouter.getReachedStops();
egressRouter.put(mode, streetRouter);
LOG.info("Added {} edgres stops for mode {}", stops.size(), mode);
} else {
LOG.warn(
"MODE:{}, Edge near the origin coordinate wasn't found. Routing didn't start!", mode);
}
}
}
/**
* Finds direct paths between from and to coordinates in request and adds them to option
*
* @param request
* @param option
*/
private void findDirectPaths(ProfileRequest request, ProfileOption option) {
// For direct modes
for (LegMode mode : request.directModes) {
StreetRouter streetRouter = new StreetRouter(transportNetwork.streetLayer);
StreetPath streetPath;
streetRouter.profileRequest = request;
if (mode == LegMode.BICYCLE_RENT) {
if (!transportNetwork.streetLayer.bikeSharing) {
LOG.warn("Bike sharing trip requested but no bike sharing stations in the streetlayer");
continue;
}
streetRouter = findBikeRentalPath(request, streetRouter, true);
if (streetRouter != null) {
StreetRouter.State lastState = streetRouter.getState(request.toLat, request.toLon);
if (lastState != null) {
streetPath =
new StreetPath(lastState, streetRouter, LegMode.BICYCLE_RENT, transportNetwork);
} else {
LOG.warn(
"MODE:{}, Edge near the destination coordinate wasn't found. Routing didn't start!",
mode);
continue;
}
} else {
LOG.warn("Not found path from cycle to end");
continue;
}
} else {
streetRouter.streetMode = StreetMode.valueOf(mode.toString());
streetRouter.timeLimitSeconds = request.streetTime * 60;
if (streetRouter.setOrigin(request.fromLat, request.fromLon)) {
if (!streetRouter.setDestination(request.toLat, request.toLon)) {
LOG.warn("Direct mode {} destination wasn't found!", mode);
continue;
}
streetRouter.route();
StreetRouter.State lastState = streetRouter.getState(streetRouter.getDestinationSplit());
if (lastState == null) {
LOG.warn("Direct mode {} last state wasn't found", mode);
continue;
}
streetPath = new StreetPath(lastState, transportNetwork);
} else {
LOG.warn("Direct mode {} origin wasn't found!", mode);
continue;
}
}
StreetSegment streetSegment =
new StreetSegment(streetPath, mode, transportNetwork.streetLayer);
option.addDirect(streetSegment, request.getFromTimeDateZD());
}
}
/**
* Finds access paths from from coordinate in request and adds all routers with paths to
* accessRouter map
*
* @param request
* @param accessRouter
*/
private void findAccessPaths(ProfileRequest request, Map<LegMode, StreetRouter> accessRouter) {
// Routes all access modes
for (LegMode mode : request.accessModes) {
StreetRouter streetRouter = new StreetRouter(transportNetwork.streetLayer);
streetRouter.profileRequest = request;
if (mode == LegMode.CAR_PARK) {
streetRouter = findParkRidePath(request, streetRouter);
if (streetRouter != null) {
accessRouter.put(LegMode.CAR_PARK, streetRouter);
} else {
LOG.warn(
"MODE:{}, Edge near the origin coordinate wasn't found. Routing didn't start!", mode);
}
} else if (mode == LegMode.BICYCLE_RENT) {
if (!transportNetwork.streetLayer.bikeSharing) {
LOG.warn("Bike sharing trip requested but no bike sharing stations in the streetlayer");
continue;
}
streetRouter = findBikeRentalPath(request, streetRouter, false);
if (streetRouter != null) {
accessRouter.put(LegMode.BICYCLE_RENT, streetRouter);
} else {
LOG.warn("Not found path from cycle to end");
}
} else {
streetRouter.streetMode = StreetMode.valueOf(mode.toString());
// Gets correct maxCar/Bike/Walk time in seconds for access leg based on mode since it
// depends on the mode
streetRouter.timeLimitSeconds = request.getTimeLimit(mode);
streetRouter.transitStopSearch = true;
streetRouter.dominanceVariable = StreetRouter.State.RoutingVariable.DURATION_SECONDS;
if (streetRouter.setOrigin(request.fromLat, request.fromLon)) {
streetRouter.route();
// Searching for access paths
accessRouter.put(mode, streetRouter);
} else {
LOG.warn(
"MODE:{}, Edge near the origin coordinate wasn't found. Routing didn't start!", mode);
}
}
}
}
/**
* Combine the results of several street searches using different modes into a single map It also
* saves with which mode was stop reached into stopModeMap. This map is then used to create
* itineraries in response
*/
private TIntIntMap combineMultimodalRoutingAccessTimes(
Map<LegMode, StreetRouter> routers,
TIntObjectMap<LegMode> stopModeMap,
ProfileRequest request) {
// times at transit stops
TIntIntMap times = new TIntIntHashMap();
// weights at transit stops
TIntIntMap weights = new TIntIntHashMap();
for (Map.Entry<LegMode, StreetRouter> entry : routers.entrySet()) {
int maxTime = 30;
int minTime = 0;
int penalty = 0;
LegMode mode = entry.getKey();
switch (mode) {
case BICYCLE:
maxTime = request.maxBikeTime;
minTime = request.minBikeTime;
penalty = BIKE_PENALTY;
break;
case BICYCLE_RENT:
// TODO this is not strictly correct, bike rent is partly walking
maxTime = request.maxBikeTime;
minTime = request.minBikeTime;
penalty = BIKESHARE_PENALTY;
break;
case WALK:
maxTime = request.maxWalkTime;
break;
case CAR:
// TODO this is not strictly correct, CAR PARK is partly walking
case CAR_PARK:
maxTime = request.maxCarTime;
minTime = request.minCarTime;
penalty = CAR_PENALTY;
break;
}
maxTime *= 60; // convert to seconds
minTime *= 60; // convert to seconds
final int maxTimeFinal = maxTime;
final int minTimeFinal = minTime;
final int penaltyFinal = penalty;
StreetRouter router = entry.getValue();
router
.getReachedStops()
.forEachEntry(
(stop, time) -> {
if (time > maxTimeFinal || time < minTimeFinal) return true;
// Skip stops that can't be used with wheelchairs if wheelchair routing is requested
if (request.wheelchair
&& !transportNetwork.transitLayer.stopsWheelchair.get(stop)) {
return true;
}
int weight = time + penaltyFinal;
// There are penalties for using certain modes, to avoid bike/car trips that are
// only marginally faster
// than walking, so we use weights to decide which mode "wins" to access a
// particular stop.
if (!weights.containsKey(stop) || weight < weights.get(stop)) {
times.put(stop, time);
weights.put(stop, weight);
stopModeMap.put(stop, mode);
}
return true; // iteration should continue
});
}
// we don't want to explore a boatload of access/egress stops. Pick only the closest several
// hundred.
// What this means is that in urban environments you'll get on the bus nearby, in suburban
// environments
// you may walk/bike/drive a very long way.
// NB in testing it's not clear this actually does a lot for performance, maybe 1-1.5s
int stopsFound = times.size();
if (stopsFound > MAX_ACCESS_STOPS) {
TIntList timeList = new TIntArrayList();
times.forEachValue(timeList::add);
timeList.sort();
// This gets last time in timeList
int cutoff =
timeList.get(
MAX_ACCESS_STOPS); // it needs to be same as MAX_ACCESS_STOPS since if there are
// minimally MAX_ACCESS_STOPS + 1 stops the indexes are from
// 0-MAX_ACCESS_STOPS
for (TIntIntIterator it = times.iterator(); it.hasNext(); ) {
it.advance();
if (it.value() > cutoff) it.remove();
}
LOG.warn("{} stops found, using {} nearest", stopsFound, times.size());
} else {
LOG.info("{} stops found", stopsFound);
}
// return the times, not the weights
return times;
}
/**
* Uses 3 streetSearches to first search from fromLat/fromLon to all the bike renting places in
* WALK mode. Then from all found bike renting places to other bike renting places with BIKE and
* then just routing from those found bike renting places in WALK mode.
*
* <p>This can then be used as streetRouter for access paths or as a direct search for specific
* destination
*
* <p>Last streetRouter (WALK from bike rentals) is returned
*
* @param request profileRequest from which from/to destination is used
* @param streetRouter where profileRequest was already set
* @param direct
* @return null if path isn't found
*/
private StreetRouter findBikeRentalPath(
ProfileRequest request, StreetRouter streetRouter, boolean direct) {
streetRouter.streetMode = StreetMode.WALK;
// TODO add time and distance limits to routing, not just weight.
streetRouter.timeLimitSeconds = request.maxWalkTime * 60;
if (!direct) {
streetRouter.dominanceVariable = StreetRouter.State.RoutingVariable.DURATION_SECONDS;
}
streetRouter.flagSearch = VertexStore.VertexFlag.BIKE_SHARING;
if (streetRouter.setOrigin(request.fromLat, request.fromLon)) {
// if we can't find destination we can stop search before even trying
if (direct && !streetRouter.setDestination(request.toLat, request.toLon)) {
return null;
}
Split destinationSplit = streetRouter.getDestinationSplit();
// reset destinationSplit since we need it at the last part of routing
streetRouter.setDestination(null);
streetRouter.route();
// This finds all the nearest bicycle rent stations when walking
TIntObjectMap<StreetRouter.State> bikeStations =
streetRouter.getReachedVertices(VertexStore.VertexFlag.BIKE_SHARING);
LOG.info(
"BIKE RENT: Found {} bike stations which are {} minutes away",
bikeStations.size(),
streetRouter.timeLimitSeconds / 60);
/*LOG.info("Start to bike share:");
bikeStations.forEachEntry((idx, state) -> {
LOG.info(" {} ({}m)", idx, state.distance);
return true;
});*/
// This finds best cycling path from best start bicycle station to end bicycle station
StreetRouter bicycle = new StreetRouter(transportNetwork.streetLayer);
bicycle.previousRouter = streetRouter;
bicycle.streetMode = StreetMode.BICYCLE;
bicycle.profileRequest = request;
bicycle.flagSearch = streetRouter.flagSearch;
bicycle.maxVertices = Integer.MAX_VALUE;
// Longer bike part if this is direct search
if (direct) {
bicycle.timeLimitSeconds = request.streetTime * 60;
} else {
bicycle.timeLimitSeconds = request.maxBikeTime * 60;
bicycle.dominanceVariable = StreetRouter.State.RoutingVariable.DURATION_SECONDS;
}
bicycle.setOrigin(
bikeStations, BIKE_RENTAL_PICKUP_TIME_S, BIKE_RENTAL_PICKUP_COST, LegMode.BICYCLE_RENT);
bicycle.setDestination(destinationSplit);
bicycle.route();
TIntObjectMap<StreetRouter.State> cycledStations =
bicycle.getReachedVertices(VertexStore.VertexFlag.BIKE_SHARING);
LOG.info(
"BIKE RENT: Found {} cycled stations which are {} minutes away",
cycledStations.size(),
bicycle.timeLimitSeconds / 60);
/*LOG.info("Bike share to bike share:");
cycledStations.retainEntries((idx, state) -> {
if (bikeStations.containsKey(idx)) {
LOG.warn(" MM:{} ({}m)", idx, state.distance/1000);
return false;
} else {
LOG.info(" {} ({}m)", idx, state.distance / 1000);
return true;
}
});*/
// This searches for walking path from end bicycle station to end point
StreetRouter end = new StreetRouter(transportNetwork.streetLayer);
end.streetMode = StreetMode.WALK;
end.profileRequest = request;
end.timeLimitSeconds = bicycle.timeLimitSeconds;
if (!direct) {
end.transitStopSearch = true;
end.dominanceVariable = StreetRouter.State.RoutingVariable.DURATION_SECONDS;
}
end.setOrigin(
cycledStations,
BIKE_RENTAL_DROPOFF_TIME_S,
BIKE_RENTAL_DROPOFF_COST,
LegMode.BICYCLE_RENT);
end.route();
end.previousRouter = bicycle;
return end;
} else {
return null;
}
}
/**
* Uses 2 streetSearches to get P+R path
*
* <p>First CAR search from fromLat/fromLon to all car parks. Then from those found places WALK
* search.
*
* <p>Result is then used as access part. Since P+R in direct mode is useless.
*
* @param request profileRequest from which from/to destination is used
* @param streetRouter where profileRequest was already set
* @return null if path isn't found
*/
private StreetRouter findParkRidePath(ProfileRequest request, StreetRouter streetRouter) {
streetRouter.streetMode = StreetMode.CAR;
streetRouter.timeLimitSeconds = request.maxCarTime * 60;
streetRouter.flagSearch = VertexStore.VertexFlag.PARK_AND_RIDE;
streetRouter.dominanceVariable = StreetRouter.State.RoutingVariable.DURATION_SECONDS;
if (streetRouter.setOrigin(request.fromLat, request.fromLon)) {
streetRouter.route();
TIntObjectMap<StreetRouter.State> carParks =
streetRouter.getReachedVertices(VertexStore.VertexFlag.PARK_AND_RIDE);
LOG.info("CAR PARK: Found {} car parks", carParks.size());
StreetRouter walking = new StreetRouter(transportNetwork.streetLayer);
walking.streetMode = StreetMode.WALK;
walking.profileRequest = request;
walking.timeLimitSeconds = request.maxCarTime * 60;
walking.transitStopSearch = true;
walking.setOrigin(carParks, CAR_PARK_DROPOFF_TIME_S, CAR_PARK_DROPOFF_COST, LegMode.CAR_PARK);
walking.dominanceVariable = StreetRouter.State.RoutingVariable.DURATION_SECONDS;
walking.route();
walking.previousRouter = streetRouter;
return walking;
} else {
return null;
}
}