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FloatEvaluator.java API Doc Android 5.1 API 1927 Thu Mar 12 22:22:08 GMT 2015 android.animation

FloatEvaluator

java.lang.Object

public class FloatEvaluator extends Object implements TypeEvaluator

This evaluator can be used to perform type interpolation between float values.

Fields Summary
Constructors Summary
Methods Summary
public java.lang.Float evaluate(float fraction, java.lang.Number startValue, java.lang.Number 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 * (v1 - v0), where x0 is startValue, x1 is endValue, and t is fraction.
param
fraction The fraction from the starting to the ending values
param
startValue The start value; should be of type float or Float
param
endValue The end value; should be of type float or Float
return
A linear interpolation between the start and end values, given the fraction parameter.
float startFloat = startValue.floatValue(); return startFloat + fraction * (endValue.floatValue() - startFloat);