public interface TypeEvaluator<T>
ValueAnimator.setEvaluator(TypeEvaluator)
function. Evaluators
allow developers to create animations on arbitrary property types, by allowing them to supply
custom evaluators for types that are not automatically understood and used by the animation
system.Modifier and Type | Method and Description |
---|---|
T |
evaluate(float fraction,
T startValue,
T endValue)
This function returns the result of linearly interpolating the start and end values, with
fraction representing the proportion between the start and end values. |
T evaluate(float fraction, T startValue, T endValue)
fraction
representing the proportion between the start and end values. The
calculation is a simple parametric calculation: result = x0 + t * (x1 - x0)
,
where x0
is startValue
, x1
is endValue
,
and t
is fraction
.fraction
- The fraction from the starting to the ending valuesstartValue
- The start value.endValue
- The end value.fraction
parameter.