com.graphhopper.routing.lm

Class PerfectApproximator

java.lang.Object

com.graphhopper.routing.lm.PerfectApproximator

All Implemented Interfaces:

WeightApproximator

public class PerfectApproximator
extends Object
implements WeightApproximator

Just a sanity-check implementation for WeightApproximator, which 'approximates' perfectly.

Constructor Summary

Constructors

Constructor and Description
PerfectApproximator(Graph graph, Weighting weighting, TraversalMode traversalMode, boolean reverse)

Method Summary

Modifier and Type	Method and Description
double	approximate(int currentNode)
double	getSlack()
WeightApproximator	reverse() Makes a 'reverse' copy of itself to make it possible using the two objects independent e.g.
void	setTo(int to)

Methods inherited from class java.lang.Object

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

Constructor Detail

PerfectApproximator

public PerfectApproximator(Graph graph,
                           Weighting weighting,
                           TraversalMode traversalMode,
                           boolean reverse)

Method Detail

approximate

public double approximate(int currentNode)

Specified by:

approximate in interface WeightApproximator

Returns:

minimal weight of the specified currentNode to the 'to' node

setTo

public void setTo(int to)

Specified by:

setTo in interface WeightApproximator

reverse

public WeightApproximator reverse()

Description copied from interface: WeightApproximator

Makes a 'reverse' copy of itself to make it possible using the two objects independent e.g. on different threads. Do not copy state depending on the current approximate calls. 'reverse' means the WeightApproximator should handle approximate calls towards the 'from' instead towards the 'to'.

Specified by:

reverse in interface WeightApproximator

getSlack

public double getSlack()

Specified by:

getSlack in interface WeightApproximator