Class VertexSequencePackedRtree

Namespace

NetTopologySuite.Index

Assembly

NetTopologySuite.dll

A semi-static spatial index for points which occur in a spatially-coherent sequence. In particular, this is suitable for indexing the vertices of a {@link LineString} or {@link Polygon} ring.

The index is constructed in a batch fashion on a given sequence of coordinates. Coordinates can be removed via the {@link #remove(int)} method.

Note that this index queries only the individual points of the input coordinate sequence, not any line segments which might be lie between them.

The input coordinate array is read-only, and is not changed when vertices are removed.

public class VertexSequencePackedRtree

Inheritance

object

VertexSequencePackedRtree

Inherited Members

object.GetType()

object.MemberwiseClone()

object.ToString()

object.Equals(object)

object.Equals(object, object)

object.ReferenceEquals(object, object)

object.GetHashCode()

Constructors

VertexSequencePackedRtree(Coordinate[])

Creates a new tree over the given sequence of coordinates. The sequence should be spatially coherent to provide query performance.

public VertexSequencePackedRtree(Coordinate[] pts)

Parameters

pts Coordinate[]

A sequence of points

Methods

GetBounds()

public Envelope[] GetBounds()

Returns

Envelope[]

Query(Envelope)

Queries the index to find all items which intersect an extent. The query result is a list of the indices of input coordinates which intersect the extent.

public int[] Query(Envelope queryEnv)

Parameters

queryEnv Envelope

The query extent

Returns

int[]

An array of the indices of the input coordinates

RemoveAt(int)

Removes the input item at the given index from the spatial index.

public void RemoveAt(int index)

Parameters

index int

Index the index of the item in the input

Remarks

This does not change the underlying coordinate array.