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UAMStrategyUtils.java
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UAMStrategyUtils.java
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package net.bhl.matsim.uam.router.strategy;
import java.util.Collection;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.apache.log4j.Logger;
import org.matsim.api.core.v01.Id;
import org.matsim.api.core.v01.Scenario;
import org.matsim.api.core.v01.TransportMode;
import org.matsim.api.core.v01.network.Link;
import org.matsim.api.core.v01.network.Network;
import org.matsim.api.core.v01.population.Leg;
import org.matsim.core.config.groups.PlansCalcRouteConfigGroup;
import org.matsim.core.network.NetworkUtils;
import org.matsim.core.router.LinkWrapperFacility;
import org.matsim.core.router.util.LeastCostPathCalculator;
import org.matsim.core.router.util.LeastCostPathCalculator.Path;
import org.matsim.core.utils.geometry.CoordUtils;
import org.matsim.facilities.Facility;
import org.matsim.pt.router.TransitRouter;
import net.bhl.matsim.uam.config.UAMConfigGroup;
import net.bhl.matsim.uam.data.UAMAccessLeg;
import net.bhl.matsim.uam.data.UAMAccessOptions;
import net.bhl.matsim.uam.data.UAMStationConnectionGraph;
import net.bhl.matsim.uam.infrastructure.UAMStation;
import net.bhl.matsim.uam.infrastructure.UAMStations;
/**
* This class provides the methods used for different UAMStrategies.
*
* @author Aitanm (Aitan Militao), RRothfeld (Raoul Rothfeld)
*/
public class UAMStrategyUtils {
private static final Logger log = Logger.getLogger(UAMStrategyUtils.class);
private final Scenario scenario;
private UAMStations landingStations;
private UAMConfigGroup uamConfig;
private UAMStationConnectionGraph stationConnections;
private Network carNetwork;
private TransitRouter transitRouter;
private LeastCostPathCalculator plcpccar;
public UAMStrategyUtils(UAMStations landingStations, UAMConfigGroup uamConfig, Scenario scenario,
UAMStationConnectionGraph stationConnections, Network carNetwork, TransitRouter transitRouter,
LeastCostPathCalculator plcpccar) {
this.landingStations = landingStations;
this.uamConfig = uamConfig;
this.scenario = scenario;
this.stationConnections = stationConnections;
this.carNetwork = carNetwork;
this.transitRouter = transitRouter;
this.plcpccar = plcpccar;
}
/**
* @return the list of possible UAMStations accessible from/to a specific
* location (facility) based in the searchRadius parameter defined in
* the config file.
*/
Collection<UAMStation> getPossibleStations(Facility fromFacility) {
if (uamConfig.getUseDynamicSearchRadius())
log.error("Cannot get possible stations only with fromFacility when using non-static search radius.");
return getPossibleStations(fromFacility, null);
}
/**
* @return the list of possible UAMStations accessible from/to a specific
* location (facility) based in the searchRadius parameter defined in
* the config file and the beeline distance.
*/
Collection<UAMStation> getPossibleStations(Facility fromFacility, Facility toFacility) {
double radius = uamConfig.getSearchRadius();
if (uamConfig.getUseDynamicSearchRadius())
radius *= CoordUtils.calcEuclideanDistance(fromFacility.getCoord(), toFacility.getCoord());
return landingStations.getUAMStationsInRadius(fromFacility.getCoord(), radius);
}
/**
* @param access true if access leg, false for egress legs.
* @param stations list of possible stations to be checked
* @param facility the origin of the trip (if access leg); the trip final
* destination (if egress leg).
* @return a map with station Id's as keys and UAMAccessRouteData as values.
*/
Map<Id<UAMStation>, UAMAccessOptions> getAccessOptions(boolean access, Collection<UAMStation> stations,
Facility facility, double departureTime) {
Set<String> modes = new HashSet<>(uamConfig.getAccessEgressModes());
Map<Id<UAMStation>, UAMAccessOptions> accessRouteData = new HashMap<>();
for (UAMStation station : stations) {
String bestModeDistance = null;
String bestModeTime = null;
double minDistance = Double.POSITIVE_INFINITY;
double minAccessTime = Double.POSITIVE_INFINITY;
for (String mode : modes) {
UAMAccessLeg uamAccessLeg = estimateAccessLeg(access, facility, departureTime, station, mode);
if (uamAccessLeg == null)
continue;
double distance = uamAccessLeg.distance;
double travelTime = uamAccessLeg.travelTime;
// TODO: Does this make sense?
// I do not think so Feb 21 mb
// if (distance <= uamConfig.getWalkDistance() &&
// modes.contains(TransportMode.walk))
// continue;
if (distance < minDistance) {
minDistance = distance;
bestModeDistance = mode;
}
if (travelTime < minAccessTime) {
minAccessTime = travelTime;
bestModeTime = mode;
}
}
if (bestModeDistance != null)
accessRouteData.put(station.getId(),
new UAMAccessOptions(minDistance, minAccessTime, bestModeDistance, bestModeTime, station));
}
return accessRouteData;
}
UAMAccessLeg estimateAccessLeg(boolean access, Facility facility, double time, UAMStation station, String mode) {
Network network = scenario.getNetwork();
Link from, to;
if (access) {
from = network.getLinks().get(facility.getLinkId());
to = station.getLocationLink();
} else {
from = station.getLocationLink();
to = network.getLinks().get(facility.getLinkId());
}
switch (mode) {
case TransportMode.car:
if (carNetwork.getLinks().get(from.getId()) != null)
from = carNetwork.getLinks().get(from.getId());
else
from = NetworkUtils.getNearestLinkExactly(carNetwork, from.getCoord());
if (carNetwork.getLinks().get(to.getId()) != null)
to = carNetwork.getLinks().get(to.getId());
else
to = NetworkUtils.getNearestLinkExactly(carNetwork, to.getCoord());
Path path = plcpccar.calcLeastCostPath(from.getFromNode(), to.getToNode(), time, null, null);
double distanceByCar = 0.0;
for (Link l : path.links) {
distanceByCar += l.getLength();
}
return new UAMAccessLeg(path.travelTime, distanceByCar, path.links);
case TransportMode.pt:
if (transitRouter != null) {
List<Leg> legs = transitRouter.calcRoute(new LinkWrapperFacility(from), new LinkWrapperFacility(to),
time, null);
double distanceByPt = 0.0;
double timeByPt = 0.0;
// pt router can return null under certain conditions
if (legs == null)
return null;
for (Leg leg : legs) {
timeByPt += leg.getTravelTime().seconds();
distanceByPt += leg.getRoute().getDistance();
}
return new UAMAccessLeg(timeByPt, distanceByPt, null);
}
default:
return getBeelineAccessLeg(facility, station, mode);
}
}
private UAMAccessLeg getBeelineAccessLeg(Facility facility, UAMStation station, String mode) {
double distanceFactor = ((PlansCalcRouteConfigGroup) scenario.getConfig().getModules().get("planscalcroute"))
.getBeelineDistanceFactors().get(mode);
double distance = CoordUtils.calcEuclideanDistance(
scenario.getNetwork().getLinks().get(facility.getLinkId()).getCoord(),
station.getLocationLink().getCoord());
double speed = ((PlansCalcRouteConfigGroup) scenario.getConfig().getModules().get("planscalcroute"))
.getTeleportedModeSpeeds().get(mode);
return new UAMAccessLeg(distance * distanceFactor / speed, distance * distanceFactor, null);
}
Network getNetwork() {
return scenario.getNetwork();
}
Set<String> getModes() {
return uamConfig.getAccessEgressModes();
}
UAMStationConnectionGraph getStationConnections() {
return stationConnections;
}
public double getAccessTime(Facility fromFacility, Double time, UAMStation departureStation, String mode) {
return estimateAccessLeg(true, fromFacility, time, departureStation, mode).travelTime;
}
public double getFlightTime(UAMStation originStation, UAMStation destinationStation) {
return stationConnections.getFlightLeg(originStation.getId(), destinationStation.getId()).travelTime;
}
public double getFlightDistance(UAMStation originStation, UAMStation destinationStation) {
return stationConnections.getFlightLeg(originStation.getId(), destinationStation.getId()).distance;
}
public double getEgressTime(Facility toFacility, Double time, UAMStation destinationStation, String mode) {
return estimateAccessLeg(false, toFacility, time, destinationStation, mode).travelTime;
}
}