public
class
FloatArrayEvaluator
extends Object
implements
TypeEvaluator<float[]>
| java.lang.Object | |
| ↳ | android.animation.FloatArrayEvaluator |
This evaluator can be used to perform type interpolation between float[] values.
Each index into the array is treated as a separate value to interpolate. For example,
evaluating {100, 200} and {300, 400} will interpolate the value at
the first index between 100 and 300 and the value at the second index value between 200 and 400.
Public constructors | |
|---|---|
FloatArrayEvaluator()
Create a FloatArrayEvaluator that does not reuse the animated value. |
|
FloatArrayEvaluator(float[] reuseArray)
Create a FloatArrayEvaluator that reuses |
|
Public methods | |
|---|---|
float[]
|
evaluate(float fraction, float[] startValue, float[] endValue)
Interpolates the value at each index by the fraction. |
Inherited methods | |
|---|---|
 From
class
java.lang.Object
| |
From
interface
android.animation.TypeEvaluator
| |
FloatArrayEvaluator ()
Create a FloatArrayEvaluator that does not reuse the animated value. Care must be taken
when using this option because on every evaluation a new float[] will be
allocated.
See also:
FloatArrayEvaluator (float[] reuseArray)
Create a FloatArrayEvaluator that reuses reuseArray for every evaluate() call.
Caution must be taken to ensure that the value returned from
getAnimatedValue() is not cached, modified, or
used across threads. The value will be modified on each evaluate() call.
| Parameters | |
|---|---|
reuseArray |
float:
The array to modify and return from evaluate.
|
Developers
float[] evaluate (float fraction,
float[] startValue,
float[] endValue)
Interpolates the value at each index by the fraction. If
FloatArrayEvaluator(float[]) was used to construct this object,
reuseArray will be returned, otherwise a new float[]
will be returned.
| Parameters | |
|---|---|
fraction |
float:
The fraction from the starting to the ending values |
startValue |
float:
The start value. |
endValue |
float:
The end value. |
| Returns | |
|---|---|
float[] |
A float[] where each element is an interpolation between
the same index in startValue and endValue.
|