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

flagEncoder

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method and Description
double	calcWeight(EdgeIteratorState edge, boolean reverse, int prevOrNextEdgeId) This method calculates the weighting a certain edgeState should be associated.
double	getMinWeight(double distance) Used only for the heuristic estimation in A*
String	getName()

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

calcMillis

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

equals, getFlagEncoder, hashCode, matches, toString, weightingToFileName

Methods inherited from class java.lang.Object

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

Constructor Detail

ShortFastestWeighting

public ShortFastestWeighting(FlagEncoder encoder,
                             PMap map)

ShortFastestWeighting

public ShortFastestWeighting(FlagEncoder encoder,
                             double distanceFactor)

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'

calcWeight

public double calcWeight(EdgeIteratorState edge,
                         boolean reverse,
                         int prevOrNextEdgeId)

Description copied from interface: Weighting

This method calculates the weighting a certain edgeState should be associated. E.g. a high value indicates that the edge should be avoided. Make sure that this method is very fast and optimized as this is called potentially millions of times for one route or a lot more for nearly any preprocessing phase.

Specified by:

calcWeight in interface Weighting

Overrides:

calcWeight in class FastestWeighting

Parameters:

edge - 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.

prevOrNextEdgeId - if reverse is false this has to be the previous edgeId, if true it has to be the next edgeId in the direction from start to end.

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