Class AbstractNode<T, TItem>

A node of an AbstractSTRtree<T, TItem>. A node is one of:

A node stores the bounds of its children, and its level within the index tree.
Inheritance
Object
AbstractNode<T, TItem>
Implements
IBoundable<T, TItem>
Inherited Members
Namespace: NetTopologySuite.Index.Strtree
Assembly: NetTopologySuite.dll
Syntax
[Serializable]
public abstract class AbstractNode<T, TItem> : IBoundable<T, TItem> where T : IIntersectable<T>, IExpandable<T>
Type Parameters
Name Description
T
TItem

Constructors

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AbstractNode(Int32)

Constructs an AbstractNode at the given level in the tree

Declaration
protected AbstractNode(int level)
Parameters
Type Name Description
Int32 level

0 if this node is a leaf, 1 if a parent of a leaf, and so on; the root node will have the highest level.

Properties

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Bounds

Gets the bounds of this node

Declaration
public T Bounds { get; }
Property Value
Type Description
T
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ChildBoundables

Returns either child AbstractNode<T, TItem>s, or if this is a leaf node, real data (wrapped in ItemBoundable<T, TItem>s).

Declaration
public IList<IBoundable<T, TItem>> ChildBoundables { get; set; }
Property Value
Type Description
IList<IBoundable<T, TItem>>
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Count

Gets the count of the IBoundable<T, TItem>s at this node.

Declaration
public int Count { get; }
Property Value
Type Description
Int32
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IsEmpty

Tests whether there are any IBoundable<T, TItem>s at this node.

Declaration
public bool IsEmpty { get; }
Property Value
Type Description
Boolean
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Item

Declaration
public TItem Item { get; }
Property Value
Type Description
TItem
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Level

Returns 0 if this node is a leaf, 1 if a parent of a leaf, and so on; the root node will have the highest level.

Declaration
public int Level { get; }
Property Value
Type Description
Int32

Methods

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AddChildBoundable(IBoundable<T, TItem>)

Adds either an AbstractNode, or if this is a leaf node, a data object (wrapped in an ItemBoundable).

Declaration
public void AddChildBoundable(IBoundable<T, TItem> childBoundable)
Parameters
Type Name Description
IBoundable<T, TItem> childBoundable

The child to add.
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ComputeBounds()

Returns a representation of space that encloses this Boundable, preferably not much bigger than this Boundable's boundary yet fast to test for intersection with the bounds of other Boundables. The class of object returned depends on the subclass of AbstractSTRtree.

Declaration
protected abstract T ComputeBounds()
Returns
Type Description
T

An Envelope (for STRtrees), an Interval (for SIRtrees), or other object (for other subclasses of AbstractSTRtree).

Implements