org.opentripplanner.profile

Class StopTreeCache

java.lang.Object

org.opentripplanner.profile.StopTreeCache

public class StopTreeCache
extends Object

Keeps travel distances from all transit stops in a particular Graph to their nearby street nodes. This allows us to propagate travel times out from transit to streets much faster in one-to-many analyst queries. The StopTreeCache has a fixed distance cutoff, so will be unable to provide distance information for vertices beyond that cutoff distance.

Field Summary

Fields

Modifier and Type	Field and Description
Map<TransitStop,int[]>	distancesForStop

Constructor Summary

Constructors

Constructor and Description
StopTreeCache(Graph graph, int maxWalkMeters)

Method Summary

Modifier and Type	Method and Description
void	propagateStop(TransitStop transitStop, int baseTimeSeconds, double walkSpeed, int[] targetArray) Given a travel time to a transit stop, fill in the array with minimum travel times to all nearby street vertices.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

distancesForStop

public final Map<TransitStop,int[]> distancesForStop

Constructor Detail

StopTreeCache

public StopTreeCache(Graph graph,
                     int maxWalkMeters)

Method Detail

propagateStop

public void propagateStop(TransitStop transitStop,
                          int baseTimeSeconds,
                          double walkSpeed,
                          int[] targetArray)

Given a travel time to a transit stop, fill in the array with minimum travel times to all nearby street vertices. This function is meant to be called repeatedly on multiple transit stops, accumulating minima into the same targetArray.