StepTween class Null safety

An interpolation between two integers that floors.

This class specializes the interpolation of Tween<int> to be appropriate for integers by interpolating between the given begin and end values and then using double.floor to return the current integer component, dropping the fractional component.

This results in a value that is never greater than the equivalent value from a linear double interpolation. Compare to IntTween.

The begin and end values must be set to non-null values before calling lerp or transform.

See Tween for a discussion on how to use interpolation objects.

Inheritance

Constructors

StepTween({int? begin, int? end})
Creates an int tween that floors.

Properties

begin ↔ int?
The value this variable has at the beginning of the animation.
read / writeinherited
end ↔ int?
The value this variable has at the end of the animation.
read / writeinherited
hashCode → int
The hash code for this object.
read-onlyinherited
runtimeType → Type
A representation of the runtime type of the object.
read-onlyinherited

Methods

animate(Animation<double> parent) → Animation<int>
Returns a new Animation that is driven by the given animation but that takes on values determined by this object.
inherited
chain(Animatable<double> parent) → Animatable<int>
Returns a new Animatable whose value is determined by first evaluating the given parent and then evaluating this object.
inherited
evaluate(Animation<double> animation) → int
The current value of this object for the given Animation.
inherited
lerp(double t) → int
Returns the value this variable has at the given animation clock value.
override
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed.
inherited
toString() → String
A string representation of this object.
inherited
transform(double t) → int
Returns the interpolated value for the current value of the given animation.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited