public class RectEvaluator extends Object implements TypeEvaluator<Rect>
Rect
values.Constructor and Description |
---|
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. |
Modifier and Type | Method and Description |
---|---|
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. |
public RectEvaluator()
RectEvaluator(android.graphics.Rect)
should be used
whenever possible.public RectEvaluator(Rect reuseRect)
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.reuseRect
- A Rect to be modified and returned by evaluate.public Rect evaluate(float fraction, Rect startValue, Rect endValue)
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.
evaluate
in interface TypeEvaluator<Rect>
fraction
- The fraction from the starting to the ending valuesstartValue
- The start RectendValue
- The end Rectfraction
parameter.