org.locationtech.jts.linearref

Class ExtractLineByLocation

java.lang.Object

org.locationtech.jts.linearref.ExtractLineByLocation

class ExtractLineByLocation
extends java.lang.Object

Extracts the subline of a linear Geometry between two LinearLocations on the line.

Field Summary

Fields

Modifier and Type	Field and Description
private Geometry	line

Constructor Summary

Constructors

Constructor and Description
ExtractLineByLocation(Geometry line)

Method Summary

Modifier and Type	Method and Description
private LineString	computeLine(LinearLocation start, LinearLocation end) Assumes input is valid (e.g.
private Geometry	computeLinear(LinearLocation start, LinearLocation end) Assumes input is valid (e.g.
static Geometry	extract(Geometry line, LinearLocation start, LinearLocation end) Computes the subline of a LineString between two LinearLocations on the line.
Geometry	extract(LinearLocation start, LinearLocation end) Extracts a subline of the input.
private Geometry	reverse(Geometry linear)

Methods inherited from class java.lang.Object

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

Field Detail

line

private Geometry line

Constructor Detail

ExtractLineByLocation

public ExtractLineByLocation(Geometry line)

Method Detail

extract

public static Geometry extract(Geometry line,
                               LinearLocation start,
                               LinearLocation end)

Computes the subline of a LineString between two LinearLocations on the line. If the start location is after the end location, the computed linear geometry has reverse orientation to the input line.

Parameters:

line - the line to use as the baseline

start - the start location

end - the end location

Returns:

the extracted subline

extract

public Geometry extract(LinearLocation start,
                        LinearLocation end)

Extracts a subline of the input. If end < start the linear geometry computed will be reversed.

Parameters:

start - the start location

end - the end location

Returns:

a linear geometry

reverse

private Geometry reverse(Geometry linear)

computeLine

private LineString computeLine(LinearLocation start,
                               LinearLocation end)

Assumes input is valid (e.g. start <= end)

Parameters:

start -

end -

Returns:

a linear geometry

computeLinear

private Geometry computeLinear(LinearLocation start,
                               LinearLocation end)

Assumes input is valid (e.g. start <= end)

Parameters:

start -

end -

Returns:

a linear geometry