SpatialGrid<T> class

A grid index mapping 2D points to payloads of type T.

Constructors

SpatialGrid(double cellSize)

Creates a grid whose square cells are cellSize units on a side. Requires cellSize > 0. Audited: 2026-06-12 11:26 EDT

Properties

hashCode → int

The hash code for this object.

no setter, inherited

length → int

Total number of points stored. Audited: 2026-06-12 11:26 EDT

no setter

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

insert(T item, double x, double y) → void

Inserts item at position (x, y). The same item may be inserted at multiple positions; each insertion is independent.

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

queryRadius(double x, double y, double radius) → List<T>

Items whose stored position lies within Euclidean distance radius of (x, y). Requires radius >= 0. Order is unspecified. Audited: 2026-06-12 11:26 EDT

toString() → String

A string representation of this object.

override

Operators

operator ==(Object other) → bool

The equality operator.

inherited