SpringToken class final

Mass-1 spring, integer-encoded so hashing stays bit-exact (motion brief §2.6). Convert with SpringDescription.withDampingRatio(mass: 1, stiffness: k, ratio: zetaPermille / 1000) in the render layer.

Annotations

• @immutable

Constructors

SpringToken(int stiffness, int zetaPermille)

const

SpringToken.fromJson(Object? json)

factory

Properties

dampingRatio → double

ζ as a double.

no setter

hashCode → int

The hash code for this object.

no setter, override

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

stiffness → int

k (N/m with mass 1).

final

zetaPermille → int

Damping ratio ζ × 1000 (bounce = 1 − ζ).

final

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toJson() → List<int>

toString() → String

A string representation of this object.

override

Operators

operator ==(Object other) → bool

The equality operator.

override