ChartSpatialIndex class

A spatial index specifically designed for chart hit testing.

Constructors

ChartSpatialIndex({required Rect bounds})

Properties

hashCode → int

The hash code for this object.

no setter, inherited

length → int

Number of registered items.

no setter

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

clear() → void

Clears the index.

findNearest(Offset point, {double maxDistance = 50.0}) → HitTestInfo?

Finds the nearest data point.

hitTest(Offset point) → HitTestInfo?

Finds the hit info at a point.

hitTestRadius(Offset point, double radius) → List<HitTestInfo>

Finds all hits within a distance.

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

registerDataPoint<T>({required T item, required Rect bounds, required int dataIndex, int? seriesIndex}) → void

Registers a hit region for a data point.

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited