TypeEvaluator

Kotlin |Java

public interface TypeEvaluator<T>

Known direct subclasses

ArgbEvaluator, FloatArrayEvaluator, FloatEvaluator, IntArrayEvaluator, IntEvaluator, PointFEvaluator, RectEvaluator

`ArgbEvaluator`	This evaluator can be used to perform type interpolation between integer values that represent ARGB colors.
`FloatArrayEvaluator`	This evaluator can be used to perform type interpolation between `float[]` values.
`FloatEvaluator`	This evaluator can be used to perform type interpolation between `float` values.
`IntArrayEvaluator`	This evaluator can be used to perform type interpolation between `int[]` values.
`IntEvaluator`	This evaluator can be used to perform type interpolation between `int` values.
`PointFEvaluator`	This evaluator can be used to perform type interpolation between `PointF` values.
`RectEvaluator`	This evaluator can be used to perform type interpolation between `Rect` values.

Interface for use with the setEvaluator 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.

Parameters
`<T>`	the type of value to be evaluated

See also
`setEvaluator`

Summary

Public methods
`abstract @NonNull T`	`evaluate(float fraction, @NonNull T startValue, @NonNull 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.

Public methods

evaluate

abstract @NonNull T evaluate(float fraction, @NonNull T startValue, @NonNull 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. The calculation is a simple parametric calculation: result = x0 + t * (x1 - x0), where x0 is startValue, x1 is endValue, and t is fraction.

Parameters
`float fraction`	The fraction from the starting to the ending values
`@NonNull T startValue`	The start value.
`@NonNull T endValue`	The end value.

Returns
`@NonNull T`	A linear interpolation between the start and end values, given the `fraction` parameter.