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.
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 |
|
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 |
Inherited methods | |
|---|---|
 From
class
java.lang.Object
| |
From
interface
android.animation.TypeEvaluator
| |
RectEvaluator ()
Construct a RectEvaluator that returns a new Rect on every evaluate call.
To avoid creating an object for each evaluate call,
RectEvaluator(android.graphics.Rect) should be used
whenever possible.
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.
|
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.
|
Developers