RectEvaluator

Kotlin |Java

public class RectEvaluator
extends Object implements TypeEvaluator<Rect>

java.lang.Object
↳	android.animation.RectEvaluator

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

Summary

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

Public methods
`Rect`	`evaluate(float fraction, Rect startValue, Rect endValue)` This function returns the result of linearly interpolating the start and end Rect 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


      evaluate(float fraction, Rect startValue, Rect 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

RectEvaluator

Added in API level 18

public RectEvaluator ()

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

RectEvaluator

Added in API level 21

public RectEvaluator (Rect reuseRect)

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

Parameters
`reuseRect`	`Rect`: A Rect to be modified and returned by evaluate.

Public methods

evaluate

Added in API level 18

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

This function returns the result of linearly interpolating the start and end Rect 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 Rect objects (left, top, right, and bottom).

If RectEvaluator(android.graphics.Rect) was used to construct this RectEvaluator, the object returned will be the reuseRect passed into the constructor.

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

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