com.graphhopper.routing.util.spatialrules

Class SpatialRuleLookupArray

java.lang.Object

com.graphhopper.routing.util.spatialrules.SpatialRuleLookupArray

All Implemented Interfaces:

SpatialRuleLookup

public class SpatialRuleLookupArray
extends Object
implements SpatialRuleLookup

SpatialRuleLookup implementation using an array as data structure. Currently limited to 255 ruleContainers The covered area is indexed as tiles, with every tile being "quadratic" having the same degree length on every side.

Author:

Robin Boldt

Field Summary

Fields inherited from interface com.graphhopper.routing.util.spatialrules.SpatialRuleLookup

EMPTY

Constructor Summary

Constructors

Constructor and Description
SpatialRuleLookupArray(List<SpatialRule> spatialRules, double resolution, boolean exact, BBox bounds)

Method Summary

Modifier and Type	Method and Description
BBox	getBounds()
int	getSpatialId(SpatialRule rule) This method returns an identification number from 0 to size (exclusive) for the specified rule.
SpatialRule	getSpatialRule(int id) This method returns the SpatialRule for a given Spatial Id.
SpatialRule	lookupRule(double lat, double lon) Return an applicable rule for this location.
SpatialRule	lookupRule(GHPoint point) See SpatialRuleLookup.lookupRule(double, double) for details.
int	size()

Methods inherited from class java.lang.Object

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

Constructor Detail

SpatialRuleLookupArray

public SpatialRuleLookupArray(List<SpatialRule> spatialRules,
                              double resolution,
                              boolean exact,
                              BBox bounds)

Parameters:

spatialRules - the spatial rules

resolution - of the array in decimal degrees, see: https://en.wikipedia.org/wiki/Decimal_degrees The downside of using decimal degrees is that this is not fixed to a certain m range as

exact - if exact it will also perform a polygon contains for border tiles, might fail for small holes in the Polygon that are not represented in the tile array.

bounds - create the SpatialRuleLookup for the given BBox

Method Detail

lookupRule

public SpatialRule lookupRule(double lat,
                              double lon)

Description copied from interface: SpatialRuleLookup

Return an applicable rule for this location. If there is more than one rule for the location, the implementation can decide which rule to return. For example this might be the first occurring or the most relevant, see the implementation JavaDoc.

If the requested location is outside of the supported bounds or no SpatialRule is registered at this location SpatialRule.EMPTY is returned.

Specified by:

lookupRule in interface SpatialRuleLookup

lookupRule

public SpatialRule lookupRule(GHPoint point)

Description copied from interface: SpatialRuleLookup

See SpatialRuleLookup.lookupRule(double, double) for details.

Specified by:

lookupRule in interface SpatialRuleLookup

getSpatialRule

public SpatialRule getSpatialRule(int id)

Description copied from interface: SpatialRuleLookup

This method returns the SpatialRule for a given Spatial Id. This can be used when retrieving SpatialRules from a Spatial Id stored in the graph.

Specified by:

getSpatialRule in interface SpatialRuleLookup

getSpatialId

public int getSpatialId(SpatialRule rule)

Description copied from interface: SpatialRuleLookup

This method returns an identification number from 0 to size (exclusive) for the specified rule. The id is fix for a given set of SpatialRules.

Specified by:

getSpatialId in interface SpatialRuleLookup

size

public int size()

Specified by:

size in interface SpatialRuleLookup

Returns:

the number of rules added to this lookup.

getBounds

public BBox getBounds()

Specified by:

getBounds in interface SpatialRuleLookup

Returns:

the bounds of the SpatialRuleLookup