Class VertexSequencePackedRtree

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.

Inheritance

object

VertexSequencePackedRtree

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Namespace: NetTopologySuite.Index

Assembly: NetTopologySuite.dll

Syntax

public class VertexSequencePackedRtree

Constructors

VertexSequencePackedRtree(Coordinate[])

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

Declaration

public VertexSequencePackedRtree(Coordinate[] pts)

Parameters

Type	Name	Description
Coordinate[]	pts	A sequence of points

Methods

GetBounds()

Declaration

public Envelope[] GetBounds()

Returns

Type	Description
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.

Declaration

public int[] Query(Envelope queryEnv)

Parameters

Type	Name	Description
Envelope	queryEnv	The query extent

Returns

Type	Description
int[]	An array of the indices of the input coordinates

RemoveAt(int)

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

Declaration

public void RemoveAt(int index)

Parameters

Type	Name	Description
int	index	Index the index of the item in the input

Remarks

This does not change the underlying coordinate array.