FloatEvaluator
class FloatEvaluator : TypeEvaluator<Float!>
kotlin.Any | |
↳ | androidx.core.animation.FloatEvaluator |
This evaluator can be used to perform type interpolation between float
values.
Summary
Public methods | |
---|---|
Float |
This function returns the result of linearly interpolating the start and end values, with |
static FloatEvaluator |
Returns an instance of |
Public methods
evaluate
@NonNull fun evaluate(
fraction: Float,
@NonNull startValue: Float,
@NonNull endValue: Float
): Float
This function returns the result of linearly interpolating the start and end values, with fraction
representing the proportion between the start and end values. The calculation is a simple parametric calculation: result = x0 + t * (v1 - v0)
, where x0
is startValue
, x1
is endValue
, and t
is fraction
.
Parameters | |
---|---|
fraction |
Float: The fraction from the starting to the ending values |
startValue |
Float: The start value; should be of type float or Float |
endValue |
Float: The end value; should be of type float or Float |
Return | |
---|---|
Float |
A linear interpolation between the start and end values, given the fraction parameter. |
getInstance
@NonNull static fun getInstance(): FloatEvaluator
Returns an instance of FloatEvaluator
that may be used in ValueAnimator#setEvaluator(TypeEvaluator)
. The same instance may be used in multiple Animator
s because it holds no state.
Return | |
---|---|
FloatEvaluator |
An instance of FloatEvaluator . |