public synchronized void initIndexes() {
if (vertexIndex != null) {
return;
}
graphService.setLoadLevel(LoadLevel.DEBUG);
Graph graph = graphService.getGraph();
vertexIndex = new STRtree();
edgeIndex = new STRtree();
for (Vertex v : graph.getVertices()) {
Envelope vertexEnvelope = new Envelope(v.getCoordinate());
vertexIndex.insert(vertexEnvelope, v);
for (Edge e : v.getOutgoing()) {
Envelope envelope;
Geometry geometry = e.getGeometry();
if (geometry == null) {
envelope = vertexEnvelope;
} else {
envelope = geometry.getEnvelopeInternal();
}
edgeIndex.insert(envelope, e);
}
}
vertexIndex.build();
edgeIndex.build();
}
public static int getPreviousArriveTime(
RoutingRequest request, int arrivalTime, Vertex stopVertex) {
int bestArrivalTime = -1;
request.arriveBy = true;
// find the alights
for (Edge prealight : stopVertex.getIncoming()) {
if (prealight instanceof PreAlightEdge) {
Vertex arrival = prealight.getFromVertex(); // this is the arrival vertex
for (Edge alight : arrival.getIncoming()) {
if (alight instanceof TransitBoardAlight) {
State state = new State(alight.getToVertex(), arrivalTime, request);
State result = alight.traverse(state);
if (result == null) continue;
int time = (int) result.getTime();
if (time > bestArrivalTime) {
bestArrivalTime = time;
}
}
}
}
}
request.arriveBy = false;
return bestArrivalTime;
}
/**
* Get edges inside a bbox.
*
* @return
*/
@Secured({"ROLE_USER"})
@GET
@Path("/edges")
@Produces({MediaType.APPLICATION_JSON})
public Object getEdges(
@QueryParam("lowerLeft") String lowerLeft,
@QueryParam("upperRight") String upperRight,
@QueryParam("exactClass") String className,
@QueryParam("skipTransit") boolean skipTransit,
@QueryParam("skipStreets") boolean skipStreets,
@QueryParam("skipNoGeometry") boolean skipNoGeometry) {
initIndexes();
Envelope envelope = getEnvelope(lowerLeft, upperRight);
EdgeSet out = new EdgeSet();
Graph graph = graphService.getGraph();
@SuppressWarnings("unchecked")
List<Edge> query = edgeIndex.query(envelope);
out.edges = new ArrayList<WrappedEdge>();
for (Edge e : query) {
if (skipStreets && (e instanceof StreetEdge)) continue;
if (skipTransit && !(e instanceof StreetEdge)) continue;
if (skipNoGeometry && e.getGeometry() == null) continue;
if (className != null && !e.getClass().getName().endsWith("." + className)) continue;
out.edges.add(new WrappedEdge(e, graph.getIdForEdge(e)));
}
return out.withGraph(graph);
}
private void fixupTransitLeg(Leg leg, State state, TransitIndexService transitIndex) {
Edge en = state.getBackEdge();
leg.route = en.getName();
Trip trip = state.getBackTrip();
leg.headsign = state.getBackDirection();
if (trip != null) {
// this is the stop headsign
// leg.headsign = "This is the headsign";
// handle no stop headsign
if (leg.headsign == null) leg.headsign = trip.getTripHeadsign();
leg.tripId = trip.getId().getId();
leg.agencyId = trip.getId().getAgencyId();
leg.tripShortName = trip.getTripShortName();
leg.routeShortName = trip.getRoute().getShortName();
leg.routeLongName = trip.getRoute().getLongName();
leg.routeColor = trip.getRoute().getColor();
leg.routeTextColor = trip.getRoute().getTextColor();
leg.routeId = trip.getRoute().getId().getId();
if (transitIndex != null) {
Agency agency = transitIndex.getAgency(leg.agencyId);
leg.agencyName = agency.getName();
leg.agencyUrl = agency.getUrl();
}
}
leg.mode = state.getBackMode().toString();
leg.startTime = makeCalendar(state.getBackState());
}
public static int getNextDepartTime(
RoutingRequest request, int departureTime, Vertex stopVertex) {
int bestArrivalTime = Integer.MAX_VALUE;
request.arriveBy = false;
// find the boards
for (Edge preboard : stopVertex.getOutgoing()) {
if (preboard instanceof PreBoardEdge) {
Vertex departure = preboard.getToVertex(); // this is the departure vertex
for (Edge board : departure.getOutgoing()) {
if (board instanceof TransitBoardAlight) {
State state = new State(board.getFromVertex(), departureTime, request);
State result = board.traverse(state);
if (result == null) continue;
int time = (int) result.getTime();
if (time < bestArrivalTime) {
bestArrivalTime = time;
}
}
}
}
}
request.arriveBy = true;
return bestArrivalTime;
}
public void drawAnotation(GraphBuilderAnnotation anno) {
Envelope env = new Envelope();
Edge e = anno.getReferencedEdge();
if (e != null) {
this.enqueueHighlightedEdge(e);
env.expandToInclude(e.getFromVertex().getCoordinate());
env.expandToInclude(e.getToVertex().getCoordinate());
}
ArrayList<Vertex> vertices = new ArrayList<Vertex>();
Vertex v = anno.getReferencedVertex();
if (v != null) {
env.expandToInclude(v.getCoordinate());
vertices.add(v);
}
if (e == null && v == null) return;
// make it a little bigger, especially needed for STOP_UNLINKED
env.expandBy(0.02);
// highlight relevant things
this.clearHighlights();
this.setHighlightedVertices(vertices);
// zoom the graph display
this.zoomToEnvelope(env);
// and draw
this.draw();
}
private int drawEdge(Edge e) {
if (e.getGeometry() == null) return 0; // do not attempt to draw geometry-less edges
Coordinate[] coords = e.getGeometry().getCoordinates();
beginShape();
for (int i = 0; i < coords.length; i++)
vertex((float) toScreenX(coords[i].x), (float) toScreenY(coords[i].y));
endShape();
return coords.length; // should be used to count segments, not edges drawn
}
protected List<Edge> getOutgoingMatchableEdges(Vertex vertex) {
List<Edge> edges = new ArrayList<Edge>();
for (Edge e : vertex.getOutgoing()) {
if (!(e instanceof StreetEdge)) continue;
if (e.getGeometry() == null) continue;
edges.add(e);
}
return edges;
}
public static DisjointSet<Vertex> getConnectedComponents(Graph graph) {
DisjointSet<Vertex> components = new DisjointSet<Vertex>();
for (Vertex v : graph.getVertices()) {
for (Edge e : v.getOutgoing()) {
components.union(e.getFromVertex(), e.getToVertex());
}
}
return components;
}
private boolean testForUshape(
Edge edge,
long maxTime,
long fromTime,
long toTime,
double angleLimit,
double distanceTolerance,
double userSpeed,
boolean hasCar,
boolean performSpeedTest) {
LineString ls = (LineString) edge.getGeometry();
if (ls.getNumPoints() <= 3) { // first filter since u-shapes need at least 4 pts
// this is the normal case
return false;
} else {
// try to identify u-shapes by checking if the angle EndPoint-StartPoint-StartPoint+1
// is about 90 degrees (using Azimuths on the sphere)
double diffTo90Azimuths = 360;
if (edge instanceof PlainStreetEdge) {
double firstSegmentAngle = DirectionUtils.getFirstAngle(edge.getGeometry());
if (firstSegmentAngle < 0) firstSegmentAngle = firstSegmentAngle + Math.PI;
double firstToLastSegmentAngle = getFirstToLastSegmentAngle(edge.getGeometry());
if (firstToLastSegmentAngle < 0)
firstToLastSegmentAngle = firstToLastSegmentAngle + Math.PI;
double diffAzimuths = Math.abs(firstToLastSegmentAngle - firstSegmentAngle);
diffTo90Azimuths = Math.abs(diffAzimuths - (Math.PI / 2.0));
} else {
// this will happen in particular for transit routes
// LOG.debug("Edge is not a PlainStreetEdge");
}
if (diffTo90Azimuths < angleLimit) {
// no need to test further if we know its a u-shape
// System.out.println("u-shape found, (spherical) angle: " + diffTo90Azimuths* 180/Math.PI);
return true;
} else {
if (performSpeedTest) {
// Use also a distance based criteria since the angle criteria may fail.
// However a distance based one may fail as well for steep terrain.
long dt = Math.abs(toTime - fromTime);
double lineDist = edge.getDistance();
double distanceToWalkInTimeMissing =
distanceToMoveInRemainingTime(maxTime, fromTime, dt, userSpeed, edge, hasCar, false);
double approxWalkableDistanceInTime = distanceToWalkInTimeMissing * distanceTolerance;
if ((approxWalkableDistanceInTime < lineDist)) {
return true;
}
}
return false;
}
}
}
public StateEditor(State parent, Edge e) {
child = parent.clone();
child.backState = parent;
child.backEdge = e;
// We clear child.next here, since it could have already been set in the
// parent
child.next = null;
if (e == null) {
child.backState = null;
child.hops = 0;
child.vertex = parent.vertex;
child.stateData = child.stateData.clone();
} else {
child.hops = parent.hops + 1;
// be clever
// Note that we use equals(), not ==, here to allow for dynamically
// created vertices
if (e.getFromVertex().equals(e.getToVertex()) && parent.vertex.equals(e.getFromVertex())) {
// TODO LG: We disable this test: the assumption that
// the from and to vertex of an edge are not the same
// is not true anymore: bike rental on/off edges.
traversingBackward = parent.getOptions().isArriveBy();
child.vertex = e.getToVertex();
} else if (parent.vertex.equals(e.getFromVertex())) {
traversingBackward = false;
child.vertex = e.getToVertex();
} else if (parent.vertex.equals(e.getToVertex())) {
traversingBackward = true;
child.vertex = e.getFromVertex();
} else {
// Parent state is not at either end of edge.
LOG.warn("Edge is not connected to parent state: {}", e);
LOG.warn(" from vertex: {}", e.getFromVertex());
LOG.warn(" to vertex: {}", e.getToVertex());
LOG.warn(" parent vertex: {}", parent.vertex);
defectiveTraversal = true;
}
if (traversingBackward != parent.getOptions().isArriveBy()) {
LOG.error(
"Actual traversal direction does not match traversal direction in TraverseOptions.");
defectiveTraversal = true;
}
if (parent.stateData.noThruTrafficState == NoThruTrafficState.INIT
&& !(e instanceof FreeEdge)) {
setNoThruTrafficState(NoThruTrafficState.BETWEEN_ISLANDS);
}
}
}
private WalkStep createWalkStep(State s) {
Edge en = s.getBackEdge();
WalkStep step;
step = new WalkStep();
step.streetName = en.getName();
step.lon = en.getFromVertex().getX();
step.lat = en.getFromVertex().getY();
step.elevation = encodeElevationProfile(s.getBackEdge(), 0);
step.bogusName = en.hasBogusName();
step.addAlerts(s.getBackAlerts());
step.angle = DirectionUtils.getFirstAngle(s.getBackEdge().getGeometry());
if (s.getBackEdge() instanceof AreaEdge) {
step.area = true;
}
return step;
}
/**
* Get vertices connected to an edge
*
* @return
*/
@Secured({"ROLE_USER"})
@GET
@Path("/verticesForEdge")
@Produces({MediaType.APPLICATION_JSON})
public Object getVerticesForEdge(@QueryParam("edge") int edgeId) {
Graph graph = graphService.getGraph();
Edge edge = graph.getEdgeById(edgeId);
VertexSet out = new VertexSet();
out.vertices = new ArrayList<Vertex>(2);
out.vertices.add(edge.getFromVertex());
out.vertices.add(edge.getToVertex());
return out.withGraph(graph);
}
private void treatAndAddUshapeWithinTimeLimits(
long maxTime,
double userSpeed,
ArrayList<LineString> walkShedEdges,
Edge edge,
long fromTime,
long toTime,
LineString ls,
boolean hasCar) {
// check if the u-shape can be traveled within the remaining time
long dt = Math.abs(toTime - fromTime);
double distanceToMoveInTimeMissing =
distanceToMoveInRemainingTime(maxTime, fromTime, dt, userSpeed, edge, hasCar, true);
double lineDist = edge.getDistance();
double fraction = (double) distanceToMoveInTimeMissing / (double) lineDist;
// get the sub-edge geom
LineString subLine = null;
if (fraction < 1.0) {
// the u-shape is not fully walkable in maxTime
subLine = this.getSubLineString(ls, fraction);
walkShedEdges.add(subLine);
// if it is smaller we need also to calculate the LS from the other side
LineString reversedLine = (LineString) ls.reverse();
double distanceToMoveInTimeMissing2 =
distanceToMoveInRemainingTime(maxTime, toTime, dt, userSpeed, edge, hasCar, true);
double fraction2 = (double) distanceToMoveInTimeMissing2 / (double) lineDist;
LineString secondsubLine = this.getSubLineString(reversedLine, fraction2);
;
walkShedEdges.add(secondsubLine);
} else { // the whole u-shape is within the time
// add only once
walkShedEdges.add(ls);
}
}
/**
* Makes a new empty leg from a starting edge
*
* @param itinerary
*/
private Leg makeLeg(Itinerary itinerary, State s) {
Leg leg = new Leg();
itinerary.addLeg(leg);
leg.startTime = makeCalendar(s.getBackState());
leg.distance = 0.0;
String name;
Edge backEdge = s.getBackEdge();
if (backEdge instanceof StreetEdge) {
name = backEdge.getName();
} else {
name = s.getVertex().getName();
}
leg.from = makePlace(s.getBackState(), name, false);
leg.mode = s.getBackMode().toString();
if (s.isBikeRenting()) {
leg.rentedBike = true;
}
return leg;
}
/* use endpoints instead of geometry for quick updating */
private void drawEdgeFast(Edge e) {
Coordinate[] coords = e.getGeometry().getCoordinates();
Coordinate c0 = coords[0];
Coordinate c1 = coords[coords.length - 1];
line(
(float) toScreenX(c0.x),
(float) toScreenY(c0.y),
(float) toScreenX(c1.x),
(float) toScreenY(c1.y));
}
public InferredEdge(@Nonnull Edge edge, @Nonnull Integer edgeId, @Nonnull OtpGraph graph) {
Preconditions.checkNotNull(edge);
Preconditions.checkNotNull(graph);
Preconditions.checkNotNull(edgeId);
assert !(edge instanceof TurnEdge || edge == null);
this.graph = graph;
this.edgeId = edgeId;
this.edge = edge;
/*
* Warning: this geometry is in lon/lat and may contain more than one
* straight line.
*/
this.geometry = edge.getGeometry();
this.locationIndexedLine = new LocationIndexedLine(geometry);
this.lengthIndexedLine = new LengthIndexedLine(geometry);
this.lengthLocationMap = new LengthLocationMap(geometry);
this.startVertex = edge.getFromVertex();
this.endVertex = edge.getToVertex();
final Coordinate startPointCoord =
this.locationIndexedLine.extractPoint(this.locationIndexedLine.getStartIndex());
this.startPoint =
VectorFactory.getDefault().createVector2D(startPointCoord.x, startPointCoord.y);
final Coordinate endPointCoord =
this.locationIndexedLine.extractPoint(this.locationIndexedLine.getEndIndex());
this.endPoint = VectorFactory.getDefault().createVector2D(endPointCoord.x, endPointCoord.y);
this.velocityPrecisionDist =
// ~4.4 m/s, std. dev ~ 30 m/s, Gamma with exp. value = 30 m/s
// TODO perhaps variance of velocity should be in m/s^2. yeah...
new NormalInverseGammaDistribution(
4.4d, 1d / Math.pow(30d, 2d), 1d / Math.pow(30d, 2d) + 1d, Math.pow(30d, 2d));
this.velocityEstimator =
new UnivariateGaussianMeanVarianceBayesianEstimator(velocityPrecisionDist);
}
/*
* Iterate through all vertices and their (outgoing) edges. If they are of 'interesting' types, add them to the corresponding spatial index.
*/
public synchronized void buildSpatialIndex() {
vertexIndex = new STRtree();
edgeIndex = new STRtree();
Envelope env;
// int xminx, xmax, ymin, ymax;
for (Vertex v : graph.getVertices()) {
Coordinate c = v.getCoordinate();
env = new Envelope(c);
vertexIndex.insert(env, v);
for (Edge e : v.getOutgoing()) {
if (e.getGeometry() == null) continue;
if (e instanceof PatternEdge || e instanceof StreetTransitLink || e instanceof StreetEdge) {
env = e.getGeometry().getEnvelopeInternal();
edgeIndex.insert(env, e);
}
}
}
vertexIndex.build();
edgeIndex.build();
}
/**
* Internals of getRegionsForVertex; keeps track of seen vertices to avoid loops.
*
* @param regionData
* @param vertex
* @param seen
* @param depth
* @return
*/
private static HashSet<Integer> getRegionsForVertex(
RegionData regionData, Vertex vertex, HashSet<Vertex> seen, int depth) {
seen.add(vertex);
HashSet<Integer> regions = new HashSet<Integer>();
int region = vertex.getGroupIndex();
if (region >= 0) {
regions.add(region);
} else {
for (Edge e : vertex.getOutgoing()) {
final Vertex tov = e.getToVertex();
if (!seen.contains(tov))
regions.addAll(getRegionsForVertex(regionData, tov, seen, depth + 1));
}
for (Edge e : vertex.getIncoming()) {
final Vertex fromv = e.getFromVertex();
if (!seen.contains(fromv))
regions.addAll(getRegionsForVertex(regionData, fromv, seen, depth + 1));
}
}
return regions;
}
public void testBoardAlight() throws Exception {
Vertex stop_a_depart = graph.getVertex("agency:A_depart");
Vertex stop_b_depart = graph.getVertex("agency:B_depart");
assertEquals(1, stop_a_depart.getDegreeOut());
assertEquals(3, stop_b_depart.getDegreeOut());
for (Edge e : stop_a_depart.getOutgoing()) {
assertEquals(TransitBoardAlight.class, e.getClass());
assertTrue(((TransitBoardAlight) e).boarding);
}
TransitBoardAlight pb = (TransitBoardAlight) stop_a_depart.getOutgoing().iterator().next();
Vertex journey_a_1 = pb.getToVertex();
assertEquals(1, journey_a_1.getDegreeIn());
for (Edge e : journey_a_1.getOutgoing()) {
if (e.getToVertex() instanceof TransitStop) {
assertEquals(TransitBoardAlight.class, e.getClass());
} else {
assertEquals(PatternHop.class, e.getClass());
}
}
}
private void finalizeLeg(
Leg leg,
State state,
List<State> states,
int start,
int end,
CoordinateArrayListSequence coordinates,
Itinerary itinerary) {
// this leg has already been added to the itinerary, so we actually want the penultimate leg, if
// any
if (states != null) {
int extra = 0;
WalkStep continuation = null;
if (itinerary.legs.size() >= 2) {
Leg previousLeg = itinerary.legs.get(itinerary.legs.size() - 2);
if (previousLeg.walkSteps != null) {
continuation = previousLeg.walkSteps.get(previousLeg.walkSteps.size() - 1);
extra = 1;
}
}
if (end == states.size() - 1) {
extra = 1;
}
leg.walkSteps = getWalkSteps(states.subList(start, end + extra), continuation);
}
leg.endTime = makeCalendar(state.getBackState());
Geometry geometry = GeometryUtils.getGeometryFactory().createLineString(coordinates);
leg.legGeometry = PolylineEncoder.createEncodings(geometry);
Edge backEdge = state.getBackEdge();
String name;
if (backEdge instanceof StreetEdge) {
name = backEdge.getName();
} else {
name = state.getVertex().getName();
}
leg.to = makePlace(state, name, true);
coordinates.clear();
}
public boolean canTurnOnto(Edge e, State state, TraverseMode mode) {
for (TurnRestriction turnRestriction : getTurnRestrictions(state.getOptions().rctx.graph)) {
/* FIXME: This is wrong for trips that end in the middle of turnRestriction.to
*/
// NOTE(flamholz): edge to be traversed decides equivalence. This is important since
// it might be a temporary edge that is equivalent to some graph edge.
if (turnRestriction.type == TurnRestrictionType.ONLY_TURN) {
if (!e.isEquivalentTo(turnRestriction.to)
&& turnRestriction.modes.contains(mode)
&& turnRestriction.active(state.getTimeSeconds())) {
return false;
}
} else {
if (e.isEquivalentTo(turnRestriction.to)
&& turnRestriction.modes.contains(mode)
&& turnRestriction.active(state.getTimeSeconds())) {
return false;
}
}
}
return true;
}
@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;
}
@Test
public final void testOnBoardDepartureTime() {
Coordinate[] coordinates = new Coordinate[5];
coordinates[0] = new Coordinate(0.0, 0.0);
coordinates[1] = new Coordinate(0.0, 1.0);
coordinates[2] = new Coordinate(2.0, 1.0);
coordinates[3] = new Coordinate(5.0, 1.0);
coordinates[4] = new Coordinate(5.0, 5.0);
PatternDepartVertex depart = mock(PatternDepartVertex.class);
PatternArriveVertex dwell = mock(PatternArriveVertex.class);
PatternArriveVertex arrive = mock(PatternArriveVertex.class);
Graph graph = mock(Graph.class);
RoutingRequest routingRequest = mock(RoutingRequest.class);
ServiceDay serviceDay = mock(ServiceDay.class);
when(graph.getTimeZone()).thenReturn(TimeZone.getTimeZone("GMT"));
GeometryFactory geometryFactory = GeometryUtils.getGeometryFactory();
CoordinateSequenceFactory coordinateSequenceFactory =
geometryFactory.getCoordinateSequenceFactory();
CoordinateSequence coordinateSequence = coordinateSequenceFactory.create(coordinates);
LineString geometry = new LineString(coordinateSequence, geometryFactory);
ArrayList<Edge> hops = new ArrayList<Edge>(2);
RoutingContext routingContext = new RoutingContext(routingRequest, graph, null, arrive);
AgencyAndId agencyAndId = new AgencyAndId("Agency", "ID");
Route route = new Route();
ArrayList<StopTime> stopTimes = new ArrayList<StopTime>(3);
StopTime stopDepartTime = new StopTime();
StopTime stopDwellTime = new StopTime();
StopTime stopArriveTime = new StopTime();
Stop stopDepart = new Stop();
Stop stopDwell = new Stop();
Stop stopArrive = new Stop();
Trip trip = new Trip();
routingContext.serviceDays = new ArrayList<ServiceDay>(Collections.singletonList(serviceDay));
route.setId(agencyAndId);
stopDepart.setId(agencyAndId);
stopDwell.setId(agencyAndId);
stopArrive.setId(agencyAndId);
stopDepartTime.setStop(stopDepart);
stopDepartTime.setDepartureTime(0);
stopDwellTime.setArrivalTime(20);
stopDwellTime.setStop(stopDwell);
stopDwellTime.setDepartureTime(40);
stopArriveTime.setArrivalTime(60);
stopArriveTime.setStop(stopArrive);
stopTimes.add(stopDepartTime);
stopTimes.add(stopDwellTime);
stopTimes.add(stopArriveTime);
trip.setId(agencyAndId);
trip.setTripHeadsign("The right");
TripTimes tripTimes = new TripTimes(trip, stopTimes, new Deduplicator());
StopPattern stopPattern = new StopPattern(stopTimes);
TripPattern tripPattern = new TripPattern(route, stopPattern);
when(depart.getTripPattern()).thenReturn(tripPattern);
when(dwell.getTripPattern()).thenReturn(tripPattern);
PatternHop patternHop0 = new PatternHop(depart, dwell, stopDepart, stopDwell, 0);
PatternHop patternHop1 = new PatternHop(dwell, arrive, stopDwell, stopArrive, 1);
hops.add(patternHop0);
hops.add(patternHop1);
when(graph.getEdges()).thenReturn(hops);
when(depart.getCoordinate()).thenReturn(new Coordinate(0, 0));
when(dwell.getCoordinate()).thenReturn(new Coordinate(0, 0));
when(arrive.getCoordinate()).thenReturn(new Coordinate(0, 0));
when(routingRequest.getFrom()).thenReturn(new GenericLocation());
when(routingRequest.getStartingTransitTripId()).thenReturn(agencyAndId);
when(serviceDay.secondsSinceMidnight(anyInt())).thenReturn(9);
patternHop0.setGeometry(geometry);
tripPattern.add(tripTimes);
graph.index = new GraphIndex(graph);
coordinates = new Coordinate[3];
coordinates[0] = new Coordinate(3.5, 1.0);
coordinates[1] = new Coordinate(5.0, 1.0);
coordinates[2] = new Coordinate(5.0, 5.0);
coordinateSequence = coordinateSequenceFactory.create(coordinates);
geometry = new LineString(coordinateSequence, geometryFactory);
Vertex vertex = onBoardDepartServiceImpl.setupDepartOnBoard(routingContext);
Edge edge = vertex.getOutgoing().toArray(new Edge[1])[0];
assertEquals(vertex, edge.getFromVertex());
assertEquals(dwell, edge.getToVertex());
assertEquals("The right", edge.getDirection());
assertEquals(geometry, edge.getGeometry());
assertEquals(coordinates[0].x, vertex.getX(), 0.0);
assertEquals(coordinates[0].y, vertex.getY(), 0.0);
}
@Override
public List<GraphPath> plan(State origin, Vertex target, int nItineraries) {
TraverseOptions options = origin.getOptions();
if (_graphService.getCalendarService() != null)
options.setCalendarService(_graphService.getCalendarService());
options.setTransferTable(_graphService.getGraph().getTransferTable());
options.setServiceDays(origin.getTime(), _graphService.getGraph().getAgencyIds());
if (options.getModes().getTransit()
&& !_graphService.getGraph().transitFeedCovers(new Date(origin.getTime() * 1000))) {
// user wants a path through the transit network,
// but the date provided is outside those covered by the transit feed.
throw new TransitTimesException();
}
// always use the bidirectional heuristic because the others are not precise enough
RemainingWeightHeuristic heuristic =
new BidirectionalRemainingWeightHeuristic(_graphService.getGraph());
// the states that will eventually be turned into paths and returned
List<State> returnStates = new LinkedList<State>();
// Populate any extra edges
final ExtraEdgesStrategy extraEdgesStrategy = options.extraEdgesStrategy;
OverlayGraph extraEdges = new OverlayGraph();
extraEdgesStrategy.addEdgesFor(extraEdges, origin.getVertex());
extraEdgesStrategy.addEdgesFor(extraEdges, target);
BinHeap<State> pq = new BinHeap<State>();
// List<State> boundingStates = new ArrayList<State>();
// initialize heuristic outside loop so table can be reused
heuristic.computeInitialWeight(origin, target);
// increase maxWalk repeatedly in case hard limiting is in use
WALK:
for (double maxWalk = options.getMaxWalkDistance();
maxWalk < 100000 && returnStates.isEmpty();
maxWalk *= 2) {
LOG.debug("try search with max walk {}", maxWalk);
// increase maxWalk if settings make trip impossible
if (maxWalk
< Math.min(
origin.getVertex().distance(target),
origin.getVertex().getDistanceToNearestTransitStop()
+ target.getDistanceToNearestTransitStop())) continue WALK;
options.setMaxWalkDistance(maxWalk);
// reinitialize states for each retry
HashMap<Vertex, List<State>> states = new HashMap<Vertex, List<State>>();
pq.reset();
pq.insert(origin, 0);
long startTime = System.currentTimeMillis();
long endTime = startTime + (int) (_timeouts[0] * 1000);
LOG.debug("starttime {} endtime {}", startTime, endTime);
QUEUE:
while (!pq.empty()) {
if (System.currentTimeMillis() > endTime) {
LOG.debug("timeout at {} msec", System.currentTimeMillis() - startTime);
if (returnStates.isEmpty()) continue WALK;
else {
storeMemory();
break WALK;
}
}
State su = pq.extract_min();
// for (State bs : boundingStates) {
// if (eDominates(bs, su)) {
// continue QUEUE;
// }
// }
Vertex u = su.getVertex();
if (traverseVisitor != null) {
traverseVisitor.visitVertex(su);
}
if (u.equals(target)) {
// boundingStates.add(su);
returnStates.add(su);
if (!options.getModes().getTransit()) break QUEUE;
// options should contain max itineraries
if (returnStates.size() >= _maxPaths) break QUEUE;
if (returnStates.size() < _timeouts.length) {
endTime = startTime + (int) (_timeouts[returnStates.size()] * 1000);
LOG.debug(
"{} path, set timeout to {}",
returnStates.size(),
_timeouts[returnStates.size()] * 1000);
}
continue QUEUE;
}
for (Edge e : u.getEdges(extraEdges, null, options.isArriveBy())) {
STATE:
for (State new_sv = e.traverse(su); new_sv != null; new_sv = new_sv.getNextResult()) {
if (traverseVisitor != null) {
traverseVisitor.visitEdge(e, new_sv);
}
double h = heuristic.computeForwardWeight(new_sv, target);
// for (State bs : boundingStates) {
// if (eDominates(bs, new_sv)) {
// continue STATE;
// }
// }
Vertex v = new_sv.getVertex();
List<State> old_states = states.get(v);
if (old_states == null) {
old_states = new LinkedList<State>();
states.put(v, old_states);
} else {
for (State old_sv : old_states) {
if (eDominates(old_sv, new_sv)) {
continue STATE;
}
}
Iterator<State> iter = old_states.iterator();
while (iter.hasNext()) {
State old_sv = iter.next();
if (eDominates(new_sv, old_sv)) {
iter.remove();
}
}
}
if (traverseVisitor != null) traverseVisitor.visitEnqueue(new_sv);
old_states.add(new_sv);
pq.insert(new_sv, new_sv.getWeight() + h);
}
}
}
}
storeMemory();
// Make the states into paths and return them
List<GraphPath> paths = new LinkedList<GraphPath>();
for (State s : returnStates) {
LOG.debug(s.toStringVerbose());
paths.add(new GraphPath(s, true));
}
// sort by arrival time, though paths are already in order of increasing difficulty
// Collections.sort(paths, new PathComparator(origin.getOptions().isArriveBy()));
return paths;
}
private State getStateDepartAt(RaptorData data, ArrayList<RaptorState> states) {
State state = new State(states.get(0).getRequest());
for (int i = states.size() - 1; i >= 0; --i) {
RaptorState cur = states.get(i);
if (cur.walkPath != null) { // a walking step
GraphPath path = new GraphPath(cur.walkPath, false);
for (Edge e : path.edges) {
State oldState = state;
state = e.traverse(state);
if (state == null) {
e.traverse(oldState);
}
}
} else {
// so, cur is at this point at a transit stop; we have a route to board
if (cur.getParent() == null || !cur.getParent().interlining) {
for (Edge e : state.getVertex().getOutgoing()) {
if (e instanceof PreBoardEdge) {
state = e.traverse(state);
break;
}
}
TransitBoardAlight board = cur.getRoute().boards[cur.boardStopSequence][cur.patternIndex];
state = board.traverse(state);
}
// now traverse the hops and dwells until we find the alight we're looking for
HOP:
while (true) {
for (Edge e : state.getVertex().getOutgoing()) {
if (e instanceof PatternDwell) {
state = e.traverse(state);
} else if (e instanceof PatternHop) {
state = e.traverse(state);
if (cur.interlining) {
for (Edge e2 : state.getVertex().getOutgoing()) {
RaptorState next = states.get(i - 1);
if (e2 instanceof PatternInterlineDwell) {
Stop toStop = ((TransitVertex) e2.getToVertex()).getStop();
Stop expectedStop = next.boardStop.stopVertex.getStop();
if (toStop.equals(expectedStop)) {
State newState = e2.traverse(state);
if (newState == null) continue;
if (newState.getTripId() != next.tripId) continue;
state = newState;
break HOP;
}
}
}
} else {
for (Edge e2 : state.getVertex().getOutgoing()) {
if (e2 instanceof TransitBoardAlight) {
for (Edge e3 : e2.getToVertex().getOutgoing()) {
if (e3 instanceof PreAlightEdge) {
if (data.raptorStopsForStopId.get(
((TransitStop) e3.getToVertex()).getStopId())
== cur.stop) {
state = e2.traverse(state);
state = e3.traverse(state);
break HOP;
}
}
}
}
}
}
}
}
}
}
}
return state;
}
/**
* Calculates what distance can be traveled with the remaining time and given speeds. For car use
* the speed limit is taken from the edge itself. Slopes are accounted for when walking and
* biking. A minimal slope of 0.06 (6m/100m) is necessary.
*
* @param maxTime in sec, the time we have left
* @param fromTime in sec, the time when we enter the edge
* @param traverseTime in sec, original edge traverse time needed to adjust the speed based
* calculation to slope effects
* @param userSpeed in m/sec, dependent on traversal mode
* @param edge the edge itself (used to the get the speed in car mode)
* @param usesCar if we traverse the edge in car mode
* @param hasUshape if know, indicate if the edge has a u-shape
* @return the distance in meter that can be moved until maxTime
*/
double distanceToMoveInRemainingTime(
long maxTime,
long fromTime,
double traverseTime,
double userSpeed,
Edge edge,
boolean usesCar,
boolean hasUshape) {
boolean isTooFast = false;
String msg = "";
double originalTravelSpeed =
edge.getDistance() / traverseTime; // this may be wrong for u-shapes
if (originalTravelSpeed < userSpeed) {
// we may have slope effects
if (edge instanceof PlainStreetEdge) {
PlainStreetEdge pe = (PlainStreetEdge) edge;
double maxSlope = pe.getElevationProfileSegment().getMaxSlope();
// if we are over the slope limit, then we should use the slower speed
if (maxSlope > 0.06) { // limit 6m/100m = 3.4 degree
userSpeed = originalTravelSpeed;
}
}
} else {
// in this case we may have a u-shape, or the user speeds are too small, or something else.
double vdiff = Math.abs(originalTravelSpeed - userSpeed);
double vDiffPercent = vdiff / (userSpeed / 100.0);
if (vDiffPercent > 20) {
isTooFast = true;
// [sstein Dec 2012]: Note, it seems like most of these edges are indeed of u-shape type,
// i.e. small roads that come from and return from (the same) main road
msg =
"v_traversed is much faster than (allowed) v_user, edgeName: "
+ edge.getName()
+ ", >>> (in m/s): v_traversed="
+ (int) Math.floor(originalTravelSpeed)
+ ", v_maxUser="******", known u-shape, ";
}
if ((usesCar == false) && (hasUshape == false)) {
this.tooFastTraversedEdgeGeoms.add(edge.getGeometry());
LOG.debug(msg);
} // otherwise we print msg below
}
}
// correct speed for car use, as each road has its speed limits
if (usesCar) {
if (edge instanceof PlainStreetEdge) {
PlainStreetEdge pe = (PlainStreetEdge) edge;
userSpeed = pe.getCarSpeed();
// we need to check again if the originalTravelSpeed is faster
if ((isTooFast == true) && (originalTravelSpeed > userSpeed) && (hasUshape == false)) {
this.tooFastTraversedEdgeGeoms.add(edge.getGeometry());
LOG.debug(msg + "; setting v_PlainStreetEdge=" + (int) Math.floor(userSpeed));
}
}
}
// finally calculate how far we can travel with the remaining time
long timeMissing = maxTime - fromTime;
double distanceToWalkInTimeMissing = timeMissing * userSpeed;
return distanceToWalkInTimeMissing;
}
private State getStateArriveBy(RaptorData data, ArrayList<RaptorState> states) {
RoutingRequest options = states.get(0).getRequest();
State state = new State(options.rctx.origin, options);
for (int i = states.size() - 1; i >= 0; --i) {
RaptorState cur = states.get(i);
if (cur.walkPath != null) {
GraphPath path = new GraphPath(cur.walkPath, false);
for (ListIterator<Edge> it = path.edges.listIterator(path.edges.size());
it.hasPrevious(); ) {
Edge e = it.previous();
State oldState = state;
state = e.traverse(state);
if (state == null) {
e.traverse(oldState);
}
}
} else {
// so, cur is at this point at a transit stop; we have a route to alight from
if (cur.getParent() == null || !cur.getParent().interlining) {
for (Edge e : state.getVertex().getIncoming()) {
if (e instanceof PreAlightEdge) {
state = e.traverse(state);
}
}
TransitBoardAlight alight =
cur.getRoute().alights[cur.boardStopSequence - 1][cur.patternIndex];
State oldState = state;
state = alight.traverse(state);
if (state == null) {
state = alight.traverse(oldState);
}
}
// now traverse the hops and dwells until we find the board we're looking for
HOP:
while (true) {
for (Edge e : state.getVertex().getIncoming()) {
if (e instanceof PatternDwell) {
state = e.traverse(state);
} else if (e instanceof PatternHop) {
state = e.traverse(state);
if (cur.interlining) {
for (Edge e2 : state.getVertex().getIncoming()) {
RaptorState next = states.get(i - 1);
if (e2 instanceof PatternInterlineDwell) {
Stop fromStop = ((TransitVertex) e2.getFromVertex()).getStop();
Stop expectedStop = next.boardStop.stopVertex.getStop();
if (fromStop.equals(expectedStop)) {
State newState = e2.traverse(state);
if (newState == null) continue;
if (newState.getTripId() != next.tripId) continue;
state = newState;
break HOP;
}
}
}
} else {
for (Edge e2 : state.getVertex().getIncoming()) {
if (e2 instanceof TransitBoardAlight) {
for (Edge e3 : e2.getFromVertex().getIncoming()) {
if (e3 instanceof PreBoardEdge) {
if (data.raptorStopsForStopId.get(
((TransitStop) e3.getFromVertex()).getStopId())
== cur.stop) {
state = e2.traverse(state);
state = e3.traverse(state);
break HOP;
}
}
}
}
}
}
}
}
}
}
}
return state;
}
/**
* Calculates walksheds for a given location, based on time given to walk and the walk speed.
*
* <p>Depending on the value for the "output" parameter (i.e. "POINTS", "SHED" or "EDGES"), a
* different type of GeoJSON geometry is returned. If a SHED is requested, then a ConcaveHull of
* the EDGES/roads is returned. If that fails, a ConvexHull will be returned.
*
* <p>The ConcaveHull parameter is set to 0.005 degrees. The offroad walkspeed is assumed to be
* 0.83333 m/sec (= 3km/h) until a road is hit.
*
* <p>Note that the set of EDGES/roads returned as well as POINTS returned may contain duplicates.
* If POINTS are requested, then not the end-points are returned at which the max time is reached,
* but instead all the graph nodes/crossings that are within the time limits.
*
* <p>In case there is no road near by within the given time, then a circle for the walktime limit
* is created and returned for the SHED parameter. Otherwise the edge with the direction towards
* the closest road. Note that the circle is calculated in Euclidian 2D coordinates, and
* distortions towards an ellipse will appear if it is transformed/projected to the user location.
*
* <p>An example request may look like this:
* localhost:8080/otp-rest-servlet/ws/iso?layers=traveltime&styles=mask&batch=true&fromPlace=51.040193121307176
* %2C-114.04471635818481&toPlace
* =51.09098935%2C-113.95179705&time=2012-06-06T08%3A00%3A00&mode=WALK&maxWalkDistance=10000&walkSpeed=1.38&walkTime=10.7&output=EDGES
* Though the first parameters (i) layer, (ii) styles and (iii) batch could be discarded.
*
* @param walkmins Maximum number of minutes to walk.
* @param output Can be set to "POINTS", "SHED" or "EDGES" to return different types of GeoJSON
* geometry. SHED returns a ConcaveHull or ConvexHull of the edges/roads. POINTS returns all
* graph nodes that are within the time limit.
* @return a JSON document containing geometries (either points, lineStrings or a polygon).
* @throws Exception
* @author sstein---geo.uzh.ch
*/
@GET
@Produces({MediaType.APPLICATION_JSON})
public String getIsochrone(
@QueryParam("walkTime") @DefaultValue("15") double walkmins,
@QueryParam("output") @DefaultValue("POINTS") String output)
throws Exception {
this.debugGeoms = new ArrayList();
this.tooFastTraversedEdgeGeoms = new ArrayList();
RoutingRequest sptRequestA = buildRequest(0);
String from = sptRequestA.getFrom().toString();
int pos = 1;
float lat = 0;
float lon = 0;
for (String s : from.split(",")) {
if (s.isEmpty()) {
// no location
Response.status(Status.BAD_REQUEST).entity("no position").build();
return null;
}
try {
float num = Float.parseFloat(s);
if (pos == 1) {
lat = num;
}
if (pos == 2) {
lon = num;
}
} catch (Exception e) {
throw new WebApplicationException(
Response.status(Status.BAD_REQUEST)
.entity(
"Could not parse position string to number. Require numerical lat & long coords.")
.build());
}
pos++;
}
GeometryFactory gf = new GeometryFactory();
Coordinate dropPoint = new Coordinate(lon, lat);
int walkInMin = (int) Math.floor(walkmins);
double walkInSec = walkmins * 60;
LOG.debug(
"given travel time: " + walkInMin + " mins + " + (walkInSec - (60 * walkInMin)) + " sec");
// restrict the evaluated SPT size to 30mins for requests with walking < 30min
// if larger walking times are requested we adjust the evaluated
// graph dynamically by 1.3 * min -> this should save processing time
if (walkInMin < 30) {
sptRequestA.worstTime = sptRequestA.dateTime + (30 * 60);
} else {
sptRequestA.worstTime = sptRequestA.dateTime + Math.round(walkInMin * 1.3 * 60);
}
// set the switch-time for shed/area calculation, i.e. to decide if the hull is calculated based
// on points or on edges
TraverseModeSet modes = sptRequestA.modes;
LOG.debug("mode(s): " + modes);
if ((modes.contains(TraverseMode.TRANSIT))
|| (modes.contains(TraverseMode.BUSISH))
|| (modes.contains(TraverseMode.TRAINISH))) {
shedCalcMethodSwitchTimeInSec =
60 * 20; // 20min (use 20min for transit, since buses may not come all the time)
} else if (modes.contains(TraverseMode.CAR)) {
shedCalcMethodSwitchTimeInSec = 60 * 10; // 10min
} else if (modes.contains(TraverseMode.BICYCLE)) {
shedCalcMethodSwitchTimeInSec = 60 * 10; // 10min
} else {
shedCalcMethodSwitchTimeInSec = 60 * 20; // 20min
}
// set the maxUserSpeed, which is used later to check for u-type streets/crescents when
// calculating sub-edges;
// Note, that the car speed depends on the edge itself, so this value may be replaced later
this.usesCar = false;
int numberOfModes = modes.getModes().size();
if (numberOfModes == 1) {
if (modes.getWalk()) {
this.maxUserSpeed = sptRequestA.getWalkSpeed();
} else if (modes.getBicycle()) {
this.maxUserSpeed = sptRequestA.getBikeSpeed();
} else if (modes.getDriving()) {
this.maxUserSpeed = sptRequestA.getCarSpeed();
this.usesCar = true;
}
} else { // for all other cases (multiple-modes)
// sstein: I thought I may set it to 36.111 m/sec = 130 km/h,
// but maybe it is better to assume walk speed for transit, i.e. treat it like if the
// person gets off the bus on the last crossing and walks the "last mile".
this.maxUserSpeed = sptRequestA.getWalkSpeed();
}
if (doSpeedTest) {
LOG.debug("performing angle and speed based test to detect u-shapes");
} else {
LOG.debug("performing only angle based test to detect u-shapes");
}
// TODO: OTP prefers to snap to car-roads/ways, which is not so nice, when walking,
// and a footpath is closer by. So far there is no option to switch that off
// create the ShortestPathTree
try {
sptRequestA.setRoutingContext(graphService.getGraph());
} catch (Exception e) {
// if we get an exception here, and in particular a VertexNotFoundException,
// then it is likely that we chose a (transit) mode without having that (transit) modes data
LOG.debug("cannot set RoutingContext: " + e.toString());
LOG.debug("cannot set RoutingContext: setting mode=WALK");
sptRequestA.setMode(TraverseMode.WALK); // fall back to walk mode
sptRequestA.setRoutingContext(graphService.getGraph());
}
ShortestPathTree sptA = sptService.getShortestPathTree(sptRequestA);
StreetLocation origin = (StreetLocation) sptRequestA.rctx.fromVertex;
sptRequestA.cleanup(); // remove inserted points
// create a LineString for display
Coordinate pathToStreetCoords[] = new Coordinate[2];
pathToStreetCoords[0] = dropPoint;
pathToStreetCoords[1] = origin.getCoordinate();
LineString pathToStreet = gf.createLineString(pathToStreetCoords);
// get distance between origin and drop point for time correction
double distanceToRoad =
this.distanceLibrary.distance(origin.getY(), origin.getX(), dropPoint.y, dropPoint.x);
long offRoadTimeCorrection = (long) (distanceToRoad / this.offRoadWalkspeed);
//
// --- filter the states ---
//
Set<Coordinate> visitedCoords = new HashSet<Coordinate>();
ArrayList<Edge> allConnectingEdges = new ArrayList<Edge>();
Coordinate coords[] = null;
long maxTime = (long) walkInSec - offRoadTimeCorrection;
// System.out.println("Reducing walktime from: " + (int)(walkmins * 60) + "sec to " + maxTime +
// "sec due to initial walk of " + distanceToRoad
// + "m");
// if the initial walk is already to long, there is no need to parse...
if (maxTime <= 0) {
noRoadNearBy = true;
long timeToWalk = (long) walkInSec;
long timeBetweenStates = offRoadTimeCorrection;
long timeMissing = timeToWalk;
double fraction = (double) timeMissing / (double) timeBetweenStates;
pathToStreet = getSubLineString(pathToStreet, fraction);
LOG.debug(
"no street found within giving travel time (for off-road walkspeed: {} m/sec)",
this.offRoadWalkspeed);
} else {
noRoadNearBy = false;
Map<ReversibleLineStringWrapper, Edge> connectingEdgesMap = Maps.newHashMap();
for (State state : sptA.getAllStates()) {
long et = state.getElapsedTimeSeconds();
if (et <= maxTime) {
// -- filter points, as the same coordinate may be passed several times due to the graph
// structure
// in a Calgary suburb family homes neighborhood with a 15min walkshed it filtered about
// 250 points away (while 145 were finally displayed)
if (visitedCoords.contains(state.getVertex().getCoordinate())) {
continue;
} else {
visitedCoords.add(state.getVertex().getCoordinate());
}
// -- get all Edges needed later for the edge representation
// and to calculate an edge-based walkshed
// Note, it can happen that we get a null geometry here, e.g. for hop-edges!
Collection<Edge> vertexEdgesIn = state.getVertex().getIncoming();
for (Iterator<Edge> iterator = vertexEdgesIn.iterator(); iterator.hasNext(); ) {
Edge edge = (Edge) iterator.next();
Geometry edgeGeom = edge.getGeometry();
if (edgeGeom != null) { // make sure we get only real edges
if (edgeGeom instanceof LineString) {
// allConnectingEdges.add(edge); // instead of this, use a map now, so we don't have
// similar edge many times
connectingEdgesMap.put(
new ReversibleLineStringWrapper((LineString) edgeGeom), edge);
}
}
}
Collection<Edge> vertexEdgesOut = state.getVertex().getOutgoing();
for (Iterator<Edge> iterator = vertexEdgesOut.iterator(); iterator.hasNext(); ) {
Edge edge = (Edge) iterator.next();
Geometry edgeGeom = edge.getGeometry();
if (edgeGeom != null) {
if (edgeGeom instanceof LineString) {
// allConnectingEdges.add(edge); // instead of this, use a map now, so we don't
// similar edge many times
connectingEdgesMap.put(
new ReversibleLineStringWrapper((LineString) edgeGeom), edge);
}
}
}
} // end : if(et < maxTime)
}
// --
// points from list to array, for later
coords = new Coordinate[visitedCoords.size()];
int i = 0;
for (Coordinate c : visitedCoords) coords[i++] = c;
// connection edges from Map to List
allConnectingEdges.clear();
for (Edge tedge : connectingEdgesMap.values()) allConnectingEdges.add(tedge);
}
StringWriter sw = new StringWriter();
GeoJSONBuilder json = new GeoJSONBuilder(sw);
//
// -- create the different outputs ---
//
try {
if (output.equals(IsoChrone.RESULT_TYPE_POINTS)) {
// in case there was no road we create a circle and
// and return those points
if (noRoadNearBy) {
Geometry circleShape = createCirle(dropPoint, pathToStreet);
coords = circleShape.getCoordinates();
}
// -- the states/nodes with time elapsed <= X min.
LOG.debug("write multipoint geom with {} points", coords.length);
json.writeGeom(gf.createMultiPoint(coords));
LOG.debug("done");
} else if (output.equals(IsoChrone.RESULT_TYPE_SHED)) {
Geometry geomsArray[] = null;
// in case there was no road we create a circle
if (noRoadNearBy) {
Geometry circleShape = createCirle(dropPoint, pathToStreet);
json.writeGeom(circleShape);
} else {
if (maxTime > shedCalcMethodSwitchTimeInSec) { // eg., walkshed > 20 min
// -- create a point-based walkshed
// less exact and should be used for large walksheds with many edges
LOG.debug("create point-based shed (not from edges)");
geomsArray = new Geometry[coords.length];
for (int j = 0; j < geomsArray.length; j++) {
geomsArray[j] = gf.createPoint(coords[j]);
}
} else {
// -- create an edge-based walkshed
// it is more exact and should be used for short walks
LOG.debug("create edge-based shed (not from points)");
Map<ReversibleLineStringWrapper, LineString> walkShedEdges = Maps.newHashMap();
// add the walk from the pushpin to closest street point
walkShedEdges.put(new ReversibleLineStringWrapper(pathToStreet), pathToStreet);
// get the edges and edge parts within time limits
ArrayList<LineString> withinTimeEdges =
this.getLinesAndSubEdgesWithinMaxTime(
maxTime,
allConnectingEdges,
sptA,
angleLimitForUShapeDetection,
distanceToleranceForUShapeDetection,
maxUserSpeed,
usesCar,
doSpeedTest);
for (LineString ls : withinTimeEdges) {
walkShedEdges.put(new ReversibleLineStringWrapper(ls), ls);
}
geomsArray = new Geometry[walkShedEdges.size()];
int k = 0;
for (LineString ls : walkShedEdges.values()) geomsArray[k++] = ls;
} // end if-else: maxTime condition
GeometryCollection gc = gf.createGeometryCollection(geomsArray);
// create the concave hull, but in case it fails we just return the convex hull
Geometry outputHull = null;
LOG.debug(
"create concave hull from {} geoms with edge length limit of about {} m (distance on meridian)",
geomsArray.length,
concaveHullAlpha * 111132);
// 1deg at Latitude phi = 45deg is about 111.132km
// (see wikipedia:
// http://en.wikipedia.org/wiki/Latitude#The_length_of_a_degree_of_latitude)
try {
ConcaveHull hull = new ConcaveHull(gc, concaveHullAlpha);
outputHull = hull.getConcaveHull();
} catch (Exception e) {
outputHull = gc.convexHull();
LOG.debug("Could not generate ConcaveHull for WalkShed, using ConvexHull instead.");
}
LOG.debug("write shed geom");
json.writeGeom(outputHull);
LOG.debug("done");
}
} else if (output.equals(IsoChrone.RESULT_TYPE_EDGES)) {
// in case there was no road we return only the suggested path to the street
if (noRoadNearBy) {
json.writeGeom(pathToStreet);
} else {
// -- if we would use only the edges from the paths to the origin we will miss
// some edges that will be never on the shortest path (e.g. loops/crescents).
// However, we can retrieve all edges by checking the times for each
// edge end-point
Map<ReversibleLineStringWrapper, LineString> walkShedEdges = Maps.newHashMap();
// add the walk from the pushpin to closest street point
walkShedEdges.put(new ReversibleLineStringWrapper(pathToStreet), pathToStreet);
// get the edges and edge parts within time limits
ArrayList<LineString> withinTimeEdges =
this.getLinesAndSubEdgesWithinMaxTime(
maxTime,
allConnectingEdges,
sptA,
angleLimitForUShapeDetection,
distanceToleranceForUShapeDetection,
maxUserSpeed,
usesCar,
doSpeedTest);
for (LineString ls : withinTimeEdges) {
walkShedEdges.put(new ReversibleLineStringWrapper(ls), ls);
}
Geometry mls = null;
LineString edges[] = new LineString[walkShedEdges.size()];
int k = 0;
for (LineString ls : walkShedEdges.values()) edges[k++] = ls;
LOG.debug("create multilinestring from {} geoms", edges.length);
mls = gf.createMultiLineString(edges);
LOG.debug("write geom");
json.writeGeom(mls);
LOG.debug("done");
}
} else if (output.equals("DEBUGEDGES")) {
// -- for debugging, i.e. display of detected u-shapes/crescents
ArrayList<LineString> withinTimeEdges =
this.getLinesAndSubEdgesWithinMaxTime(
maxTime,
allConnectingEdges,
sptA,
angleLimitForUShapeDetection,
distanceToleranceForUShapeDetection,
maxUserSpeed,
usesCar,
doSpeedTest);
if (this.showTooFastEdgesAsDebugGeomsANDnotUShapes) {
LOG.debug("displaying edges that are traversed too fast");
this.debugGeoms = this.tooFastTraversedEdgeGeoms;
} else {
LOG.debug("displaying detected u-shaped roads/crescents");
}
LineString edges[] = new LineString[this.debugGeoms.size()];
int k = 0;
for (Iterator iterator = debugGeoms.iterator(); iterator.hasNext(); ) {
LineString ls = (LineString) iterator.next();
edges[k] = ls;
k++;
}
Geometry mls = gf.createMultiLineString(edges);
LOG.debug("write debug geom");
json.writeGeom(mls);
LOG.debug("done");
}
} catch (org.codehaus.jettison.json.JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return sw.toString();
}
/**
* Filters all input edges and returns all those as LineString geometries, that have at least one
* end point within the time limits. If they have only one end point inside, then the sub-edge is
* returned.
*
* @param maxTime the time limit in seconds that defines the size of the walkshed
* @param allConnectingStateEdges all Edges that have been found to connect all states < maxTime
* @param spt the ShortestPathTree generated for the pushpin drop point as origin
* @param angleLimit the angle tolerance to detect roads with u-shapes, i.e. Pi/2 angles, in
* Radiant.
* @param distanceTolerance in percent (e.g. 1.1 = 110%) for u-shape detection based on distance
* criteria
* @param hasCar is travel mode by CAR?
* @param performSpeedTest if true applies a test to each edge to check if the edge can be
* traversed in time. The test can detect u-shaped roads.
* @return
*/
ArrayList<LineString> getLinesAndSubEdgesWithinMaxTime(
long maxTime,
ArrayList<Edge> allConnectingStateEdges,
ShortestPathTree spt,
double angleLimit,
double distanceTolerance,
double userSpeed,
boolean hasCar,
boolean performSpeedTest) {
LOG.debug("maximal userSpeed set to: " + userSpeed + " m/sec ");
if (hasCar) {
LOG.debug("travel mode is set to CAR, hence the given speed may be adjusted for each edge");
}
ArrayList<LineString> walkShedEdges = new ArrayList<LineString>();
ArrayList<LineString> otherEdges = new ArrayList<LineString>();
ArrayList<LineString> borderEdges = new ArrayList<LineString>();
ArrayList<LineString> uShapes = new ArrayList<LineString>();
int countEdgesOutside = 0;
// -- determination of walkshed edges via edge states
for (Iterator iterator = allConnectingStateEdges.iterator(); iterator.hasNext(); ) {
Edge edge = (Edge) iterator.next();
State sFrom = spt.getState(edge.getFromVertex());
State sTo = spt.getState(edge.getToVertex());
if ((sFrom != null) && (sTo != null)) {
long fromTime = sFrom.getElapsedTimeSeconds();
long toTime = sTo.getElapsedTimeSeconds();
long dt = Math.abs(toTime - fromTime);
Geometry edgeGeom = edge.getGeometry();
if ((edgeGeom != null) && (edgeGeom instanceof LineString)) {
LineString ls = (LineString) edgeGeom;
// detect u-shape roads/crescents - they need to be treated separately
boolean uShapeOrLonger =
testForUshape(
edge,
maxTime,
fromTime,
toTime,
angleLimit,
distanceTolerance,
userSpeed,
hasCar,
performSpeedTest);
if (uShapeOrLonger) {
uShapes.add(ls);
}
// evaluate if an edge is completely within the time or only with one end
if ((fromTime < maxTime) && (toTime < maxTime)) {
// this one is within the time limit on both ends, however we need to do
// a second test if we have a u-shaped road.
if (uShapeOrLonger) {
treatAndAddUshapeWithinTimeLimits(
maxTime, userSpeed, walkShedEdges, edge, fromTime, toTime, ls, hasCar);
} else {
walkShedEdges.add(ls);
}
} // end if:fromTime & toTime < maxTime
else {
// check if at least one end is inside, because then we need to
// create the sub edge
if ((fromTime < maxTime) || (toTime < maxTime)) {
double lineDist = edge.getDistance();
LineString inputLS = ls;
double fraction = 1.0;
if (fromTime < toTime) {
double distanceToWalkInTimeMissing =
distanceToMoveInRemainingTime(
maxTime, fromTime, dt, userSpeed, edge, hasCar, uShapeOrLonger);
fraction = (double) distanceToWalkInTimeMissing / (double) lineDist;
} else {
// toTime < fromTime : invert the edge direction
inputLS = (LineString) ls.reverse();
double distanceToWalkInTimeMissing =
distanceToMoveInRemainingTime(
maxTime, toTime, dt, userSpeed, edge, hasCar, uShapeOrLonger);
fraction = (double) distanceToWalkInTimeMissing / (double) lineDist;
}
// get the subedge
LineString subLine = this.getSubLineString(inputLS, fraction);
borderEdges.add(subLine);
} else {
// this edge is completely outside - this should actually not happen
// we will not do anything, just count
countEdgesOutside++;
}
} // end else: fromTime & toTime < maxTime
} // end if: edge instance of LineString
else {
// edge is not instance of LineString
LOG.debug("edge not instance of LineString");
}
} // end if(sFrom && sTo != null) start Else
else {
// LOG.debug("could not retrieve state for edge-endpoint"); //for a 6min car ride, there can
// be (too) many of such messages
Geometry edgeGeom = edge.getGeometry();
if ((edgeGeom != null) && (edgeGeom instanceof LineString)) {
otherEdges.add((LineString) edgeGeom);
}
} // end else: sFrom && sTo != null
} // end for loop over edges
walkShedEdges.addAll(borderEdges);
this.debugGeoms.addAll(uShapes);
LOG.debug("number of detected u-shapes/crescents: " + uShapes.size());
return walkShedEdges;
}