public State optimisticTraverse(State s0) {
// do not include minimum transfer time in heuristic weight
// (it is path-dependent)
StateEditor s1 = s0.edit(this);
s1.setBackMode(getMode());
return s1.makeState();
}
@Override
public State traverse(State s0) {
EdgeNarrative en = new FixedModeEdge(this, s0.getNonTransitMode(s0.getOptions()));
RoutingRequest options = s0.getOptions();
if (options.wheelchairAccessible && !wheelchairAccessible) {
return null;
}
TraverseMode mode = s0.getNonTransitMode(options);
if (mode == TraverseMode.WALK && !permission.allows(StreetTraversalPermission.PEDESTRIAN)) {
return null;
}
if (mode == TraverseMode.BICYCLE && !permission.allows(StreetTraversalPermission.BICYCLE)) {
return null;
}
// there are elevators which allow cars
if (mode == TraverseMode.CAR && !permission.allows(StreetTraversalPermission.CAR)) {
return null;
}
StateEditor s1 = s0.edit(this, en);
s1.incrementWeight(options.elevatorHopCost);
s1.incrementTimeInSeconds(options.elevatorHopTime);
return s1.makeState();
}
@Override
public State traverse(State s0) {
EdgeNarrative en = new FixedModeEdge(this, s0.getNonTransitMode(s0.getOptions()));
StateEditor s1 = s0.edit(this, en);
s1.incrementWeight(1);
return s1.makeState();
}
public State optimisticTraverse(State state0) {
int runningTime = getPattern().getBestRunningTime(stopIndex);
StateEditor s1 = state0.edit(this);
s1.incrementTimeInSeconds(runningTime);
s1.setBackMode(getMode());
s1.incrementWeight(runningTime);
return s1.makeState();
}
public State traverse(State s0) {
TripTimes tripTimes = s0.getTripTimes();
int runningTime = tripTimes.getRunningTime(stopIndex);
StateEditor s1 = s0.edit(this);
s1.incrementTimeInSeconds(runningTime);
if (s0.getOptions().isArriveBy()) s1.setZone(getStartStop().getZoneId());
else s1.setZone(getEndStop().getZoneId());
// s1.setRoute(pattern.getExemplar().getRoute().getId());
s1.incrementWeight(runningTime);
s1.setBackMode(getMode());
return s1.makeState();
}
@Override
public State traverse(State s0) {
final RoutingRequest options = s0.getOptions();
final TraverseMode currMode = s0.getNonTransitMode();
StateEditor editor = doTraverse(s0, options, s0.getNonTransitMode());
State state = (editor == null) ? null : editor.makeState();
/* Kiss and ride support. Mode transitions occur without the explicit loop edges used in park-and-ride. */
if (options.kissAndRide) {
if (options.arriveBy) {
// Branch search to "unparked" CAR mode ASAP after transit has been used.
// Final WALK check prevents infinite recursion.
if (s0.isCarParked() && s0.isEverBoarded() && currMode == TraverseMode.WALK) {
editor = doTraverse(s0, options, TraverseMode.CAR);
if (editor != null) {
editor.setCarParked(false); // Also has the effect of switching to CAR
State forkState = editor.makeState();
if (forkState != null) {
forkState.addToExistingResultChain(state);
return forkState; // return both parked and unparked states
}
}
}
} else {
/* departAfter */
// Irrevocable transition from driving to walking. "Parking" means being dropped off in this
// case.
// Final CAR check needed to prevent infinite recursion.
if (!s0.isCarParked()
&& !getPermission().allows(TraverseMode.CAR)
&& currMode == TraverseMode.CAR) {
editor = doTraverse(s0, options, TraverseMode.WALK);
if (editor != null) {
editor.setCarParked(
true); // has the effect of switching to WALK and preventing further car use
return editor.makeState(); // return only the "parked" walking state
}
}
}
}
return state;
}
@SuppressWarnings("unchecked")
public Void call() throws Exception {
// LOG.debug("ORIGIN " + origin);
int oi = stopIndices.get(origin); // origin index
// first check for walking transfers
// LOG.debug(" Walk");
BinHeap<State> heap;
try {
heap = (BinHeap<State>) heapPool.borrowObject();
} catch (Exception e) {
throw new RuntimeException(e);
}
BasicShortestPathTree spt = new BasicShortestPathTree(500000);
State s0 = new State(origin, options);
spt.add(s0);
heap.insert(s0, s0.getWeight());
while (!heap.empty()) {
double w = heap.peek_min_key();
State u = heap.extract_min();
if (!spt.visit(u)) continue;
Vertex uVertex = u.getVertex();
// LOG.debug("heap extract " + u + " weight " + w);
if (w > MAX_WEIGHT) break;
if (uVertex instanceof TransitStop) {
int di = stopIndices.get(uVertex); // dest index
table[oi][di] = (float) w;
// LOG.debug(" Dest " + u + " w=" + w);
}
for (Edge e : uVertex.getOutgoing()) {
if (!(e instanceof PreBoardEdge)) {
State v = e.optimisticTraverse(u);
if (v != null && spt.add(v)) heap.insert(v, v.getWeight());
}
}
}
// then check what is accessible in one transit trip
heap.reset(); // recycle heap
spt = new BasicShortestPathTree(50000);
// first handle preboard edges
Queue<Vertex> q = new ArrayDeque<Vertex>(100);
q.add(origin);
while (!q.isEmpty()) {
Vertex u = q.poll();
for (Edge e : u.getOutgoing()) {
if (e instanceof PatternBoard) {
Vertex v = ((PatternBoard) e).getToVertex();
// give onboard vertices same index as their
// corresponding station
stopIndices.put(v, oi);
StateEditor se = (new State(u, options)).edit(e);
se.incrementWeight(OPTIMISTIC_BOARD_COST);
s0 = se.makeState();
spt.add(s0);
heap.insert(s0, s0.getWeight());
// _log.debug(" board " + tov);
} else if (e instanceof FreeEdge) { // handle preboard
Vertex v = ((FreeEdge) e).getToVertex();
// give onboard vertices same index as their
// corresponding station
stopIndices.put(v, oi);
q.add(v);
}
}
}
// all boarding edges for this stop have now been traversed
// LOG.debug(" Transit");
while (!heap.empty()) {
// check for transit stops when pulling off of heap
// and continue when one is found
// this is enough to prevent reboarding
// need to mark closed vertices because otherwise cycles may
// appear (interlining...)
double w = heap.peek_min_key();
State u = heap.extract_min();
if (!spt.visit(u)) continue;
// LOG.debug(" Extract " + u + " w=" + w);
Vertex uVertex = u.getVertex();
if (uVertex instanceof TransitStop) {
int di = stopIndices.get(uVertex); // dest index
if (table[oi][di] > w) {
table[oi][di] = (float) w;
// LOG.debug(" Dest " + u + "w=" + w);
}
continue;
}
for (Edge e : uVertex.getOutgoing()) {
// LOG.debug(" Edge " + e);
State v = e.optimisticTraverse(u);
if (v != null && spt.add(v)) heap.insert(v, v.getWeight());
// else LOG.debug(" (skip)");
}
}
heapPool.returnObject(heap);
incrementCount();
return null;
}
public State traverse(State state0) {
RoutingContext rctx = state0.getContext();
RoutingRequest options = state0.getOptions();
Trip trip = pattern.getTrip();
if (options.isArriveBy()) {
/* reverse traversal, not so much to do */
// do not alight immediately when arrive-depart dwell has been eliminated
// this affects multi-itinerary searches
if (state0.getBackEdge() instanceof TransitBoardAlight
&& !((TransitBoardAlight) state0.getBackEdge()).isBoarding()) {
return null;
}
StateEditor s1 = state0.edit(this);
int type = pattern.getBoardType(stopIndex);
if (TransitUtils.handleBoardAlightType(s1, type)) {
return null;
}
s1.setTripId(null);
s1.setLastAlightedTime(state0.getTime());
s1.setBackMode(TraverseMode.BOARDING);
s1.setPreviousStop(fromv);
return s1.makeState();
} else {
/* forward traversal: look for a transit trip on this pattern */
if (!options.getModes().get(modeMask)) {
return null;
}
/* find next boarding time */
/*
* check lists of transit serviceIds running yesterday, today, and tomorrow (relative to
* initial state) if this pattern's serviceId is running look for the next boarding time
* choose the soonest boarding time among trips starting yesterday, today, or tomorrow
*/
long currentTime = state0.getTime();
int bestWait = -1;
TraverseMode mode = state0.getNonTransitMode();
if (options.bannedTrips.containsKey(trip.getId())) {
// see comment in FrequencyAlight for details
return null;
}
for (ServiceDay sd : rctx.serviceDays) {
int secondsSinceMidnight = sd.secondsSinceMidnight(currentTime);
// only check for service on days that are not in the future
// this avoids unnecessarily examining tomorrow's services
if (secondsSinceMidnight < 0) continue;
if (sd.serviceIdRunning(serviceId)) {
int startTime =
pattern.getNextDepartureTime(
stopIndex,
secondsSinceMidnight,
options.wheelchairAccessible,
mode == TraverseMode.BICYCLE,
true);
if (startTime >= 0) {
// a trip was found, wait will be non-negative
int wait = (int) (sd.time(startTime) - currentTime);
if (wait < 0) _log.error("negative wait time on board");
if (bestWait < 0 || wait < bestWait) {
// track the soonest departure over all relevant schedules
bestWait = wait;
}
}
}
}
if (bestWait < 0) {
return null;
}
/* check if trip is banned for this plan */
if (options.tripIsBanned(trip)) return null;
/* check if route is preferred for this plan */
long preferences_penalty = options.preferencesPenaltyForTrip(trip);
StateEditor s1 = state0.edit(this);
int type = pattern.getBoardType(stopIndex);
if (TransitUtils.handleBoardAlightType(s1, type)) {
return null;
}
s1.incrementTimeInSeconds(bestWait);
s1.incrementNumBoardings();
s1.setTripId(trip.getId());
s1.setZone(pattern.getZone(stopIndex));
s1.setRoute(trip.getRoute().getId());
s1.setBackMode(TraverseMode.BOARDING);
long wait_cost = bestWait;
if (state0.getNumBoardings() == 0) {
wait_cost *= options.waitAtBeginningFactor;
} else {
wait_cost *= options.waitReluctance;
}
s1.incrementWeight(preferences_penalty);
s1.incrementWeight(wait_cost + options.getBoardCost(mode));
return s1.makeState();
}
}
public State optimisticTraverse(State state0) {
StateEditor s1 = state0.edit(this);
// no cost (see patternalight)
s1.setBackMode(TraverseMode.BOARDING);
return s1.makeState();
}
@Override
public List<GraphPath> plan(State origin, Vertex target, int nItineraries) {
Date targetTime = new Date(origin.getTime() * 1000);
TraverseOptions options = origin.getOptions();
if (_graphService.getCalendarService() != null)
options.setCalendarService(_graphService.getCalendarService());
options.setTransferTable(_graphService.getGraph().getTransferTable());
options.setServiceDays(targetTime.getTime() / 1000);
if (options.getModes().getTransit()
&& !_graphService.getGraph().transitFeedCovers(targetTime)) {
// user wants a path through the transit network,
// but the date provided is outside those covered by the transit feed.
throw new TransitTimesException();
}
// decide which A* heuristic to use
options.remainingWeightHeuristic =
_remainingWeightHeuristicFactory.getInstanceForSearch(options, target);
LOG.debug("Applied A* heuristic: {}", options.remainingWeightHeuristic);
// If transit is not to be used, disable walk limit and only search for one itinerary.
if (!options.getModes().getTransit()) {
nItineraries = 1;
options.setMaxWalkDistance(Double.MAX_VALUE);
}
ArrayList<GraphPath> paths = new ArrayList<GraphPath>();
// The list of options specifying various modes, banned routes, etc to try for multiple
// itineraries
Queue<TraverseOptions> optionQueue = new LinkedList<TraverseOptions>();
optionQueue.add(options);
/* if the user wants to travel by transit, create a bus-only set of options */
if (options.getModes().getTrainish() && options.getModes().contains(TraverseMode.BUS)) {
TraverseOptions busOnly = options.clone();
busOnly.setModes(options.getModes().clone());
busOnly.getModes().setTrainish(false);
// Moved inside block to avoid double insertion in list ? (AMB)
// optionQueue.add(busOnly);
}
double maxWeight = Double.MAX_VALUE;
long maxTime = options.isArriveBy() ? 0 : Long.MAX_VALUE;
while (paths.size() < nItineraries) {
options = optionQueue.poll();
if (options == null) {
break;
}
StateEditor editor = new StateEditor(origin, null);
editor.setTraverseOptions(options);
origin = editor.makeState();
// options.worstTime = maxTime;
// options.maxWeight = maxWeight;
long searchBeginTime = System.currentTimeMillis();
LOG.debug("BEGIN SEARCH");
List<GraphPath> somePaths = _routingService.route(origin, target);
LOG.debug("END SEARCH {} msec", System.currentTimeMillis() - searchBeginTime);
if (maxWeight == Double.MAX_VALUE) {
/*
* the worst trip we are willing to accept is at most twice as bad or twice as long.
*/
if (somePaths.isEmpty()) {
// if there is no first path, there won't be any other paths
return null;
}
GraphPath path = somePaths.get(0);
long duration = path.getDuration();
LOG.debug("Setting max time and weight for subsequent searches.");
LOG.debug("First path start time: {}", path.getStartTime());
maxTime =
path.getStartTime() + MAX_TIME_FACTOR * (options.isArriveBy() ? -duration : duration);
LOG.debug("First path duration: {}", duration);
LOG.debug("Max time set to: {}", maxTime);
maxWeight = path.getWeight() * MAX_WEIGHT_FACTOR;
LOG.debug("Max weight set to: {}", maxWeight);
}
if (somePaths.isEmpty()) {
LOG.debug("NO PATHS FOUND");
continue;
}
for (GraphPath path : somePaths) {
if (!paths.contains(path)) {
// DEBUG
// path.dump();
paths.add(path);
// now, create a list of options, one with each trip in this journey banned.
LOG.debug("New trips: {}", path.getTrips());
TraverseOptions newOptions = options.clone();
for (AgencyAndId trip : path.getTrips()) {
newOptions.bannedTrips.add(trip);
}
if (!optionQueue.contains(newOptions)) {
optionQueue.add(newOptions);
}
/*
* // now, create a list of options, one with each route in this trip banned. //
* the HashSet banned is not strictly necessary as the optionsQueue will //
* already remove duplicate options, but it might be slightly faster as //
* hashing TraverseOptions is slow. LOG.debug("New routespecs: {}",
* path.getRouteSpecs()); for (RouteSpec spec : path.getRouteSpecs()) {
* TraverseOptions newOptions = options.clone();
* newOptions.bannedRoutes.add(spec); if (!optionQueue.contains(newOptions)) {
* optionQueue.add(newOptions); } }
*/
}
}
LOG.debug("{} / {} itineraries", paths.size(), nItineraries);
}
if (paths.size() == 0) {
return null;
}
// We order the list of returned paths by the time of arrival or departure (not path duration)
Collections.sort(paths, new PathComparator(origin.getOptions().isArriveBy()));
return paths;
}
@Override
public State traverse(State s0) {
RoutingRequest options = s0.getOptions();
// Ignore this edge if its stop is banned
if (!options.bannedStops.isEmpty()) {
if (options.bannedStops.matches(((TransitStop) fromv).getStop())) {
return null;
}
}
if (!options.bannedStopsHard.isEmpty()) {
if (options.bannedStopsHard.matches(((TransitStop) fromv).getStop())) {
return null;
}
}
if (options.arriveBy) {
/* Traverse backward: not much to do */
StateEditor s1 = s0.edit(this);
TransitStop fromVertex = (TransitStop) getFromVertex();
// apply board slack
s1.incrementTimeInSeconds(options.boardSlack);
s1.alightTransit();
s1.setBackMode(getMode());
return s1.makeState();
} else {
/* Traverse forward: apply stop(pair)-specific costs */
// Do not pre-board if transit modes are not selected.
// Return null here rather than in StreetTransitLink so that walk-only
// options can be used to find transit stops without boarding vehicles.
if (!options.modes.isTransit()) return null;
// If we've hit our transfer limit, don't go any further
if (s0.getNumBoardings() > options.maxTransfers) return null;
/* apply transfer rules */
/*
* look in the global transfer table for the rules from the previous stop to this stop.
*/
long t0 = s0.getTimeSeconds();
long slack;
if (s0.isEverBoarded()) {
slack = options.transferSlack - options.alightSlack;
} else {
slack = options.boardSlack;
}
long board_after = t0 + slack;
long transfer_penalty = 0;
// penalize transfers more heavily if requested by the user
if (s0.isEverBoarded()) {
// this is not the first boarding, therefore we must have "transferred" -- whether
// via a formal transfer or by walking.
transfer_penalty += options.transferPenalty;
}
StateEditor s1 = s0.edit(this);
s1.setTimeSeconds(board_after);
long wait_cost = board_after - t0;
s1.incrementWeight(wait_cost + transfer_penalty);
s1.setBackMode(getMode());
return s1.makeState();
}
}
/**
* @param options
* @param walkOptions
* @param nBoardings
* @param createdStates
* @return whether search should continue
*/
public boolean walkPhase(
RoutingRequest options,
RoutingRequest walkOptions,
int nBoardings,
List<RaptorState> createdStates) {
double distanceToNearestTransitStop = 0;
if (options.rctx.target != null) {
distanceToNearestTransitStop = options.rctx.target.getDistanceToNearestTransitStop();
}
final int boardSlack =
nBoardings == 1
? options.getBoardSlack()
: (options.getTransferSlack() - options.getAlightSlack());
ShortestPathTree spt;
GenericDijkstra dijkstra = new GenericDijkstra(walkOptions);
dijkstra.setShortestPathTreeFactory(bounder);
List<State> transitStopStates = new ArrayList<State>();
if (nBoardings == 0) {
// TODO: retry min-time bounding with this and with maxtime
if (options.rctx.target != null
&& bounder.getTargetDistance(options.rctx.origin) < options.getMaxWalkDistance())
dijkstra.setHeuristic(bounder);
MaxWalkState start = new MaxWalkState(options.rctx.origin, walkOptions);
spt = dijkstra.getShortestPathTree(start);
for (State state : spt.getAllStates()) {
if (state.getVertex() instanceof TransitStop
|| state.getVertex() instanceof TransitStopArrive
|| state.getVertex() instanceof TransitStopDepart) transitStopStates.add(state);
}
// also, compute an initial spt from the target so that we can find out what transit
// stops are nearby and what
// the time is to them, so that we can start target bounding earlier
if (maxTimeDayIndex > 0) {
RoutingRequest reversedWalkOptions = walkOptions.clone();
reversedWalkOptions.setArriveBy(!walkOptions.isArriveBy());
GenericDijkstra destDijkstra = new GenericDijkstra(reversedWalkOptions);
start = new MaxWalkState(options.rctx.target, reversedWalkOptions);
ShortestPathTree targetSpt = destDijkstra.getShortestPathTree(start);
for (State state : targetSpt.getAllStates()) {
final Vertex vertex = state.getVertex();
if (!(vertex instanceof TransitStop)) continue;
RaptorStop stop = data.raptorStopsForStopId.get(((TransitStop) vertex).getStopId());
if (stop == null) {
// we have found a stop is totally unused, so skip it
continue;
}
// Skip banned stops
if (options.getBannedStops().matches(stop.stopVertex.getStop())) {
continue;
}
if (options.getBannedStopsHard().matches(stop.stopVertex.getStop())) {
continue;
}
addStopNearTarget(stop, state.getWalkDistance(), (int) state.getElapsedTimeSeconds());
}
}
} else {
final List<MaxWalkState> startPoints = new ArrayList<MaxWalkState>();
for (RaptorState state : createdStates) {
// bounding states
// this reduces the number of initial vertices
// and the state space size
Vertex stopVertex =
options.isArriveBy() ? state.stop.departVertex : state.stop.arriveVertex;
if (stopVertex == null) {
stopVertex = state.stop.stopVertex;
}
if (options.rctx.target != null) {
double minWalk = distanceToNearestTransitStop;
double targetDistance = bounder.getTargetDistance(stopVertex);
if (targetDistance + state.walkDistance > options.getMaxWalkDistance()) {
// can't walk to destination, so we can't alight at a local vertex
if (state.stop.stopVertex.isLocal()) continue;
}
if (minWalk + state.walkDistance > options.getMaxWalkDistance()) {
continue;
}
}
StateEditor dijkstraState = new MaxWalkState.MaxWalkStateEditor(walkOptions, stopVertex);
dijkstraState.setInitialWaitTimeSeconds(state.initialWaitTime);
dijkstraState.setStartTimeSeconds(options.dateTime);
dijkstraState.setNumBoardings(state.nBoardings);
dijkstraState.setWalkDistance(state.walkDistance);
dijkstraState.setTimeSeconds(state.arrivalTime);
dijkstraState.setExtension("raptorParent", state);
dijkstraState.setOptions(walkOptions);
dijkstraState.incrementWeight(state.weight);
MaxWalkState newState = (MaxWalkState) dijkstraState.makeState();
startPoints.add(newState);
}
if (startPoints.size() == 0) {
return false;
}
System.out.println("walk starts: " + startPoints.size() + " / " + visitedEver.size());
dijkstra.setPriorityQueueFactory(
new PrefilledPriorityQueueFactory(startPoints.subList(1, startPoints.size())));
bounder.addSptStates(startPoints.subList(1, startPoints.size()));
bounder.prepareForSearch();
dijkstra.setSearchTerminationStrategy(bounder);
if (options.rctx.target != null) {
dijkstra.setSkipTraverseResultStrategy(bounder);
dijkstra.setHeuristic(bounder);
}
// Do local search
spt = dijkstra.getShortestPathTree(startPoints.get(0));
transitStopStates = bounder.getTransitStopsVisited();
}
List<? extends State> targetStates = null;
if (walkOptions.rctx.target != null) targetStates = spt.getStates(walkOptions.rctx.target);
if (targetStates != null) {
TARGET:
for (State targetState : targetStates) {
RaptorState parent = (RaptorState) targetState.getExtension("raptorParent");
RaptorState state;
if (parent != null) {
state = new RaptorState(parent);
state.nBoardings = parent.nBoardings;
state.rentingBike = targetState.isBikeRenting();
} else {
state = new RaptorState(options);
}
state.weight = targetState.getWeight();
state.walkDistance = targetState.getWalkDistance();
state.arrivalTime = (int) targetState.getTimeSeconds();
state.walkPath = targetState;
for (Iterator<RaptorState> it = getTargetStates().iterator(); it.hasNext(); ) {
RaptorState oldState = it.next();
if (oldState.eDominates(state)) {
continue TARGET;
} else if (state.eDominates(oldState)) {
it.remove();
}
}
addTargetState(state);
log.debug("Found target at: " + state + " on " + state.getTrips());
}
}
for (State state : bounder.removedBoundingStates) {
removeTargetState(state);
}
SPTSTATE:
for (State state : transitStopStates) {
final Vertex vertex = state.getVertex();
RaptorStop stop = data.raptorStopsForStopId.get(((OffboardVertex) vertex).getStopId());
if (stop == null) {
// we have found a stop is totally unused, so skip it
continue;
}
// Skip banned stops
if (options.getBannedStops().matches(stop.stopVertex.getStop())) {
continue;
}
if (options.getBannedStopsHard().matches(stop.stopVertex.getStop())) {
continue;
}
if (options.rctx.target != null) {
double minWalk = distanceToNearestTransitStop;
double targetDistance = bounder.getTargetDistance(vertex);
final double remainingWalk = options.maxWalkDistance - state.getWalkDistance();
if (maxTimeDayIndex > 0 && remainingWalk < 3218) {
double minTime =
(targetDistance - minWalk) / Raptor.MAX_TRANSIT_SPEED
+ minWalk / options.getStreetSpeedUpperBound();
if (targetDistance > remainingWalk) minTime += boardSlack;
int maxTimeForVertex = 0;
int region = vertex.getGroupIndex();
final int elapsedTime = (int) state.getElapsedTimeSeconds();
for (StopNearTarget stopNearTarget : stopsNearTarget.values()) {
int destinationRegion = stopNearTarget.stop.stopVertex.getGroupIndex();
final int maxTimeFromThisRegion =
data.maxTransitRegions.maxTransit[maxTimeDayIndex][destinationRegion][region];
int maxTime = elapsedTime + maxTimeFromThisRegion + stopNearTarget.time;
if (maxTime > maxTimeForVertex) {
maxTimeForVertex = maxTime;
}
}
if (maxTimeForVertex < maxTime) {
maxTime = maxTimeForVertex;
} else {
if (elapsedTime + minTime > maxTime * 1.5) {
continue;
}
}
}
}
List<RaptorState> states = statesByStop[stop.index];
if (states == null) {
states = new ArrayList<RaptorState>();
statesByStop[stop.index] = states;
}
RaptorState parent = (RaptorState) state.getExtension("raptorParent");
RaptorState newState;
if (parent != null) {
newState = new RaptorState(parent);
} else {
// this only happens in round 0
newState = new RaptorState(options);
}
newState.weight = state.getWeight();
newState.nBoardings = nBoardings;
newState.walkDistance = state.getWalkDistance();
newState.arrivalTime = (int) state.getTimeSeconds();
newState.walkPath = state;
newState.stop = stop;
newState.rentingBike = state.isBikeRenting();
for (RaptorState oldState : states) {
if (oldState.eDominates(newState)) {
continue SPTSTATE;
}
}
visitedLastRound.add(stop);
visitedEver.add(stop);
states.add(newState);
}
return true;
}
/**
* return a StateEditor rather than a State so that we can make parking/mode switch modifications
* for kiss-and-ride.
*/
private StateEditor doTraverse(State s0, RoutingRequest options, TraverseMode traverseMode) {
boolean walkingBike = options.walkingBike;
boolean backWalkingBike = s0.isBackWalkingBike();
TraverseMode backMode = s0.getBackMode();
Edge backEdge = s0.getBackEdge();
if (backEdge != null) {
// No illegal U-turns.
// NOTE(flamholz): we check both directions because both edges get a chance to decide
// if they are the reverse of the other. Also, because it doesn't matter which direction
// we are searching in - these traversals are always disallowed (they are U-turns in one
// direction
// or the other).
// TODO profiling indicates that this is a hot spot.
if (this.isReverseOf(backEdge) || backEdge.isReverseOf(this)) {
return null;
}
}
// Ensure we are actually walking, when walking a bike
backWalkingBike &= TraverseMode.WALK.equals(backMode);
walkingBike &= TraverseMode.WALK.equals(traverseMode);
/* Check whether this street allows the current mode. If not and we are biking, attempt to walk the bike. */
if (!canTraverse(options, traverseMode)) {
if (traverseMode == TraverseMode.BICYCLE) {
return doTraverse(s0, options.bikeWalkingOptions, TraverseMode.WALK);
}
return null;
}
// Automobiles have variable speeds depending on the edge type
double speed = calculateSpeed(options, traverseMode, s0.getTimeInMillis());
double time = getDistance() / speed;
double weight;
// TODO(flamholz): factor out this bike, wheelchair and walking specific logic to somewhere
// central.
if (options.wheelchairAccessible) {
weight = getSlopeSpeedEffectiveLength() / speed;
} else if (traverseMode.equals(TraverseMode.BICYCLE)) {
time = getSlopeSpeedEffectiveLength() / speed;
switch (options.optimize) {
case SAFE:
weight = bicycleSafetyFactor * getDistance() / speed;
break;
case GREENWAYS:
weight = bicycleSafetyFactor * getDistance() / speed;
if (bicycleSafetyFactor <= GREENWAY_SAFETY_FACTOR) {
// greenways are treated as even safer than they really are
weight *= 0.66;
}
break;
case FLAT:
/* see notes in StreetVertex on speed overhead */
weight = getDistance() / speed + getSlopeWorkCostEffectiveLength();
break;
case QUICK:
weight = getSlopeSpeedEffectiveLength() / speed;
break;
case TRIANGLE:
double quick = getSlopeSpeedEffectiveLength();
double safety = bicycleSafetyFactor * getDistance();
// TODO This computation is not coherent with the one for FLAT
double slope = getSlopeWorkCostEffectiveLength();
weight =
quick * options.triangleTimeFactor
+ slope * options.triangleSlopeFactor
+ safety * options.triangleSafetyFactor;
weight /= speed;
break;
default:
weight = getDistance() / speed;
}
} else {
if (walkingBike) {
// take slopes into account when walking bikes
time = getSlopeSpeedEffectiveLength() / speed;
}
weight = time;
if (traverseMode.equals(TraverseMode.WALK)) {
// take slopes into account when walking
// FIXME: this causes steep stairs to be avoided. see #1297.
double costs = ElevationUtils.getWalkCostsForSlope(getDistance(), getMaxSlope());
// as the cost walkspeed is assumed to be for 4.8km/h (= 1.333 m/sec) we need to adjust
// for the walkspeed set by the user
double elevationUtilsSpeed = 4.0 / 3.0;
weight = costs * (elevationUtilsSpeed / speed);
time =
weight; // treat cost as time, as in the current model it actually is the same (this can
// be checked for maxSlope == 0)
/*
// debug code
if(weight > 100){
double timeflat = length / speed;
System.out.format("line length: %.1f m, slope: %.3f ---> slope costs: %.1f , weight: %.1f , time (flat): %.1f %n", length, elevationProfile.getMaxSlope(), costs, weight, timeflat);
}
*/
}
}
if (isStairs()) {
weight *= options.stairsReluctance;
} else {
// TODO: this is being applied even when biking or driving.
weight *= options.walkReluctance;
}
StateEditor s1 = s0.edit(this);
s1.setBackMode(traverseMode);
s1.setBackWalkingBike(walkingBike);
/* Handle no through traffic areas. */
if (this.isNoThruTraffic()) {
// Record transition into no-through-traffic area.
if (backEdge instanceof StreetEdge && !((StreetEdge) backEdge).isNoThruTraffic()) {
s1.setEnteredNoThroughTrafficArea();
}
// If we transitioned into a no-through-traffic area at some point, check if we are exiting
// it.
if (s1.hasEnteredNoThroughTrafficArea()) {
// Only Edges are marked as no-thru, but really we need to avoid creating dominant, pruned
// states
// on thru _Vertices_. This could certainly be improved somehow.
for (StreetEdge se : Iterables.filter(s1.getVertex().getOutgoing(), StreetEdge.class)) {
if (!se.isNoThruTraffic()) {
// This vertex has at least one through-traffic edge. We can't dominate it with a
// no-thru state.
return null;
}
}
}
}
/* Compute turn cost. */
StreetEdge backPSE;
if (backEdge != null && backEdge instanceof StreetEdge) {
backPSE = (StreetEdge) backEdge;
RoutingRequest backOptions =
backWalkingBike ? s0.getOptions().bikeWalkingOptions : s0.getOptions();
double backSpeed = backPSE.calculateSpeed(backOptions, backMode, s0.getTimeInMillis());
final double realTurnCost; // Units are seconds.
// Apply turn restrictions
if (options.arriveBy && !canTurnOnto(backPSE, s0, backMode)) {
return null;
} else if (!options.arriveBy && !backPSE.canTurnOnto(this, s0, traverseMode)) {
return null;
}
/*
* This is a subtle piece of code. Turn costs are evaluated differently during
* forward and reverse traversal. During forward traversal of an edge, the turn
* *into* that edge is used, while during reverse traversal, the turn *out of*
* the edge is used.
*
* However, over a set of edges, the turn costs must add up the same (for
* general correctness and specifically for reverse optimization). This means
* that during reverse traversal, we must also use the speed for the mode of
* the backEdge, rather than of the current edge.
*/
if (options.arriveBy && tov instanceof IntersectionVertex) { // arrive-by search
IntersectionVertex traversedVertex = ((IntersectionVertex) tov);
realTurnCost =
backOptions
.getIntersectionTraversalCostModel()
.computeTraversalCost(
traversedVertex,
this,
backPSE,
backMode,
backOptions,
(float) speed,
(float) backSpeed);
} else if (!options.arriveBy && fromv instanceof IntersectionVertex) { // depart-after search
IntersectionVertex traversedVertex = ((IntersectionVertex) fromv);
realTurnCost =
options
.getIntersectionTraversalCostModel()
.computeTraversalCost(
traversedVertex,
backPSE,
this,
traverseMode,
options,
(float) backSpeed,
(float) speed);
} else {
// In case this is a temporary edge not connected to an IntersectionVertex
LOG.debug("Not computing turn cost for edge {}", this);
realTurnCost = 0;
}
if (!traverseMode.isDriving()) {
s1.incrementWalkDistance(realTurnCost / 100); // just a tie-breaker
}
long turnTime = (long) Math.ceil(realTurnCost);
time += turnTime;
weight += options.turnReluctance * realTurnCost;
}
if (walkingBike || TraverseMode.BICYCLE.equals(traverseMode)) {
if (!(backWalkingBike || TraverseMode.BICYCLE.equals(backMode))) {
s1.incrementTimeInSeconds(options.bikeSwitchTime);
s1.incrementWeight(options.bikeSwitchCost);
}
}
if (!traverseMode.isDriving()) {
s1.incrementWalkDistance(getDistance());
}
/* On the pre-kiss/pre-park leg, limit both walking and driving, either soft or hard. */
int roundedTime = (int) Math.ceil(time);
if (options.kissAndRide || options.parkAndRide) {
if (options.arriveBy) {
if (!s0.isCarParked()) s1.incrementPreTransitTime(roundedTime);
} else {
if (!s0.isEverBoarded()) s1.incrementPreTransitTime(roundedTime);
}
if (s1.isMaxPreTransitTimeExceeded(options)) {
if (options.softPreTransitLimiting) {
weight +=
calculateOverageWeight(
s0.getPreTransitTime(),
s1.getPreTransitTime(),
options.maxPreTransitTime,
options.preTransitPenalty,
options.preTransitOverageRate);
} else return null;
}
}
/* Apply a strategy for avoiding walking too far, either soft (weight increases) or hard limiting (pruning). */
if (s1.weHaveWalkedTooFar(options)) {
// if we're using a soft walk-limit
if (options.softWalkLimiting) {
// just slap a penalty for the overage onto s1
weight +=
calculateOverageWeight(
s0.getWalkDistance(),
s1.getWalkDistance(),
options.getMaxWalkDistance(),
options.softWalkPenalty,
options.softWalkOverageRate);
} else {
// else, it's a hard limit; bail
LOG.debug("Too much walking. Bailing.");
return null;
}
}
s1.incrementTimeInSeconds(roundedTime);
s1.incrementWeight(weight);
return s1;
}