Language Version: | ActionScript 3.0 |
Runtime Versions: | Flash Player 10, AIR 1.5 |
The NumberInterpolator class provides interpolation between
start and end values represented as Number instances.
public function NumberInterpolator()
Language Version: | ActionScript 3.0 |
Runtime Versions: | Flash Player 10, AIR 1.5 |
Constructor.
public function decrement(baseValue:Object, decrementValue:Object):Object
Language Version: | ActionScript 3.0 |
Runtime Versions: | Flash Player 10, AIR 1.5 |
Given a base value and a value to subtract from it,
return the result of that decrement operation. For example,
if the objects are simple Numbers, the result would be
Number(baseValue) - Number(incrementValue)
.
This function is called by the animation system when it
needs to dynamically calculate a value given some ending
value and a 'by' value that should be subtracted from it. Both of
the arguments are of type Object and cannot simply be added together.
Parameters
| baseValue:Object — The start value of the interpolation.
|
|
| decrementValue:Object — The change to apply to the baseValue .
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Returns | Object — The interpolated value.
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public static function getInstance():NumberInterpolator
Language Version: | ActionScript 3.0 |
Runtime Versions: | Flash Player 10, AIR 1.5 |
Returns the singleton of this class.
Since all NumberInterpolators
have the same behavior, there is no need for more than one instance.
Returns public function increment(baseValue:Object, incrementValue:Object):Object
Language Version: | ActionScript 3.0 |
Runtime Versions: | Flash Player 10, AIR 1.5 |
Given a base value and a value to add to it,
return the result of that operation.
For example, if the objects are simple Numbers, the result is a
Number(baseValue) + Number(incrementValue)
.
This method is called by the animation system when it
needs to dynamically calculate a value given some starting
value and a 'by' value that should be added to it. Both of
the arguments are of type Object and cannot simply be added together.
Parameters
| baseValue:Object — The start value of the interpolation.
|
|
| incrementValue:Object — The change to apply to the baseValue .
|
Returns | Object — The interpolated value.
|
public function interpolate(fraction:Number, startValue:Object, endValue:Object):Object
Language Version: | ActionScript 3.0 |
Runtime Versions: | Flash Player 10, AIR 1.5 |
Interpolation for NumberInterpolator consists of a simple
parametric calculation between startValue
and
endValue
, using fraction
as the
fraction of the elapsed time from start to end:
return startValue + fraction (endValue - startValue);
Parameters
| fraction:Number — The fraction elapsed of the
animation, between 0.0 and 1.0.
|
|
| startValue:Object — The start value of the interpolation.
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| endValue:Object — The end value of the interpolation.
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Returns | Object — The interpolated value.
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