QuaternionEvaluator

java.lang.Object
- com.google.ar.sceneform.math.QuaternionEvaluator

All Implemented Interfaces:

android.animation.TypeEvaluator<Quaternion>
```
public class QuaternionEvaluator
extends java.lang.Object
implements android.animation.TypeEvaluator<Quaternion>
```
TypeEvaluator for Quaternions. Used to animate rotations.

Constructor Summary

Constructors
Constructor Description

QuaternionEvaluator()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`Quaternion`	`evaluate(float fraction, Quaternion startValue, Quaternion 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.

Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - QuaternionEvaluator
```
public QuaternionEvaluator()
```
- Method Detail
  - evaluate
```
public Quaternion evaluate(float fraction,
                           Quaternion startValue,
                           Quaternion endValue)
```
    Description copied from interface: android.animation.TypeEvaluator
    
    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.
    
    Specified by:
    
    evaluate in interface android.animation.TypeEvaluator<Quaternion>
    
    Parameters:
    
    fraction - The fraction from the starting to the ending values
    
    startValue - The start value.
    
    endValue - The end value.
    
    Returns:
    
    A linear interpolation between the start and end values, given the fraction parameter.