PointFEvaluator

Kotlin |Java

public class PointFEvaluator
extends Object implements TypeEvaluator<PointF>

java.lang.Object
↳	android.animation.PointFEvaluator

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

Summary

Public constructors
`PointFEvaluator()` Construct a PointFEvaluator that returns a new PointF on every evaluate call.
`PointFEvaluator(PointF reuse)` Constructs a PointFEvaluator that modifies and returns `reuse` in `evaluate(float, android.graphics.PointF, android.graphics.PointF)` calls.

Public methods
`PointF`	`evaluate(float fraction, PointF startValue, PointF endValue)` This function returns the result of linearly interpolating the start and end PointF values, with `fraction` representing the proportion between the start and end values.

Inherited methods

From class


        
          java.lang.Object

`Object`	`clone()` Creates and returns a copy of this object.
`boolean`	`equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void`	`finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>`	`getClass()` Returns the runtime class of this `Object`.
`int`	`hashCode()` Returns a hash code value for the object.
`final void`	`notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()` Returns a string representation of the object.
`final void`	`wait(long timeoutMillis, int nanos)` Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
`final void`	`wait(long timeoutMillis)` Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
`final void`	`wait()` Causes the current thread to wait until it is awakened, typically by being notified or interrupted.

From interface


        
          android.animation.TypeEvaluator


        abstract
        
        
        
        
        PointF


      evaluate(float fraction, PointF startValue, PointF 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 constructors

PointFEvaluator

Added in API level 21

public PointFEvaluator ()

Construct a PointFEvaluator that returns a new PointF on every evaluate call. To avoid creating an object for each evaluate call, PointFEvaluator#PointFEvaluator(android.graphics.PointF) should be used whenever possible.

PointFEvaluator

Added in API level 21

public PointFEvaluator (PointF reuse)

Constructs a PointFEvaluator that modifies and returns reuse in evaluate(float, android.graphics.PointF, android.graphics.PointF) calls. The value returned from evaluate(float, android.graphics.PointF, android.graphics.PointF) should not be cached because it will change over time as the object is reused on each call.

Parameters
`reuse`	`PointF`: A PointF to be modified and returned by evaluate.

Public methods

evaluate

Added in API level 21

public PointF evaluate (float fraction, 
                PointF startValue, 
                PointF endValue)

This function returns the result of linearly interpolating the start and end PointF values, with fraction representing the proportion between the start and end values. The calculation is a simple parametric calculation on each of the separate components in the PointF objects (x, y).

If PointFEvaluator(android.graphics.PointF) was used to construct this PointFEvaluator, the object returned will be the reuse passed into the constructor.

Parameters
`fraction`	`float`: The fraction from the starting to the ending values
`startValue`	`PointF`: The start PointF
`endValue`	`PointF`: The end PointF

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