PieLayout<T> class

A pie/donut layout generator that computes arc angles from data values.

Constructors

PieLayout({required double value(T), double startAngle = -math.pi / 2, double endAngle = 3 * math.pi / 2, double padAngle = 0, int sort(T a, T b)?, bool sortByValueDescending = false})

Creates a pie layout generator.

Properties

endAngle → double

The end angle in radians (default: 3*pi/2, full circle).

final

hashCode → int

The hash code for this object.

no setter, inherited

padAngle → double

Padding angle between slices in radians.

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

sort → int Function(T a, T b)?

Optional sort comparator for data items.

final

sortByValueDescending → bool

Whether to sort by value descending.

final

startAngle → double

The start angle in radians (default: -pi/2, 12 o'clock position).

final

value → double Function(T)

Function to extract the value from a data item.

final

Methods

generate(List<T> data) → List<PieArc<T>>

Generates pie arcs from the given data.

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited