Class BoundaryChainNoder

A noder which extracts chains of boundary segments as {@link SegmentString}s from a polygonal coverage. Boundary segments are those which are not duplicated in the input polygonal coverage. Extracting chains of segments minimize the number of segment strings created, which produces a more efficient topological graph structure.

This enables fast overlay of polygonal coverages in CoverageUnion. Using this noder is faster than SegmentExtractingNoder and BoundarySegmentNoder.

No precision reduction is carried out. If that is required, another noder must be used (such as a snap-rounding noder), or the input must be precision-reduced beforehand.

Inheritance

object

BoundaryChainNoder

Implements

INoder

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Namespace: NetTopologySuite.Noding

Assembly: NetTopologySuite.dll

Syntax

public class BoundaryChainNoder : INoder

Constructors

BoundaryChainNoder()

Creates a new boundary-extracting noder.

Declaration

public BoundaryChainNoder()

Methods

ComputeNodes(IList<ISegmentString>)

Computes the noding for a collection of ISegmentStrings. Some Noders may add all these nodes to the input ISegmentStrings; others may only add some or none at all.

Declaration

public void ComputeNodes(IList<ISegmentString> segStrings)

Parameters

Type	Name	Description
IList<ISegmentString>	segStrings

GetNodedSubstrings()

Returns a IList<T> of fully noded ISegmentStrings. The ISegmentStrings have the same context as their parent.

Declaration

public IList<ISegmentString> GetNodedSubstrings()

Returns

Type	Description
IList<ISegmentString>

Implements

INoder