createTween abstract method

Tween<T?> createTween()
inherited

Returns a Tween that the AnimationImpl can use to interpolate between value and animatedValue.

The returned Tween must always evaluate to T even though the signature allows for a nullable type. The signature is chosen to allow the usage of Tweens that only return null when neither Tween.begin nor Tween.end are set, which AnimationImpl will never do.

Implementation

Tween<T?> createTween();