com.graphhopper.routing.weighting

Class ShortFastestWeighting

java.lang.Object

com.graphhopper.routing.weighting.AbstractWeighting

com.graphhopper.routing.weighting.FastestWeighting

com.graphhopper.routing.weighting.ShortFastestWeighting

All Implemented Interfaces:

Weighting

public class ShortFastestWeighting
extends FastestWeighting

Calculates the fastest route with distance influence controlled by a new parameter.

Author:

Peter Karich

Field Summary

Fields inherited from class com.graphhopper.routing.weighting.FastestWeighting

SPEED_CONV

Fields inherited from class com.graphhopper.routing.weighting.AbstractWeighting

accessEnc, avSpeedEnc, flagEncoder

Fields inherited from interface com.graphhopper.routing.weighting.Weighting

INFINITE_U_TURN_COSTS

Constructor Summary

Constructors

Constructor and Description
ShortFastestWeighting(FlagEncoder encoder, double distanceFactor)
ShortFastestWeighting(FlagEncoder encoder, double distanceFactor, TurnCostProvider turnCostProvider)
ShortFastestWeighting(FlagEncoder encoder, PMap map, TurnCostProvider turnCostProvider)

Method Summary

Modifier and Type	Method and Description
double	calcEdgeWeight(EdgeIteratorState edgeState, boolean reverse) In most cases subclasses should only override this method to change the edge-weight.
double	getMinWeight(double distance) Used only for the heuristic estimation in A*
String	getName()

Methods inherited from class com.graphhopper.routing.weighting.FastestWeighting

calcEdgeMillis

Methods inherited from class com.graphhopper.routing.weighting.AbstractWeighting

calcTurnMillis, calcTurnWeight, equals, getFlagEncoder, hashCode, hasTurnCosts, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

ShortFastestWeighting

public ShortFastestWeighting(FlagEncoder encoder,
                             PMap map,
                             TurnCostProvider turnCostProvider)

ShortFastestWeighting

public ShortFastestWeighting(FlagEncoder encoder,
                             double distanceFactor)

ShortFastestWeighting

public ShortFastestWeighting(FlagEncoder encoder,
                             double distanceFactor,
                             TurnCostProvider turnCostProvider)

Method Detail

getMinWeight

public double getMinWeight(double distance)

Description copied from interface: Weighting

Used only for the heuristic estimation in A*

Specified by:

getMinWeight in interface Weighting

Overrides:

getMinWeight in class FastestWeighting

Returns:

minimal weight for the specified distance in meter. E.g. if you calculate the fastest way the return value is 'distance/max_velocity'

calcEdgeWeight

public double calcEdgeWeight(EdgeIteratorState edgeState,
                             boolean reverse)

Description copied from class: AbstractWeighting

In most cases subclasses should only override this method to change the edge-weight. The turn cost handling should normally be changed by passing another TurnCostProvider implementation to the constructor instead.

Specified by:

calcEdgeWeight in interface Weighting

Overrides:

calcEdgeWeight in class FastestWeighting

Parameters:

edgeState - the edge for which the weight should be calculated

reverse - if the specified edge is specified in reverse direction e.g. from the reverse case of a bidirectional search.

Returns:

the calculated weight with the specified velocity has to be in the range of 0 and +Infinity. Make sure your method does not return NaN which can e.g. occur for 0/0.

getName

public String getName()

Specified by:

getName in interface Weighting

Overrides:

getName in class FastestWeighting