| Pakket | mx.effects |
| Klasse | public class Tween |
| Overerving | Tween  EventDispatcher Object |
| Taalversie: | ActionScript 3.0 |
| Productversie: | Flex 3 |
| Runtimeversies: | Flash Player 9, AIR 1.1 |
 | spark.effects.animation.Animation Tween is the underlying animation class for the effects in Flex 3. As of Flex 4, the Spark effects use the spark.effects.animation.Animation class to provide similar functionality. |
The Tween class defines a tween, a property animation performed on a target object over a period of time. That animation can be a change in position, such as performed by the Move effect; a change in size, as performed by the Resize or Zoom effects; a change in visibility, as performed by the Fade or Dissolve effects; or other types of animations.
When defining tween effects, you typically create an instance
of the Tween class within your override of the
EffectInstance.play() method.
A Tween instance accepts the startValue,
endValue, and duration properties,
and an optional easing function to define the animation.
The Tween object invokes the
mx.effects.effectClasses.TweenEffectInstance.onTweenUpdate()
callback function on a regular interval on the effect instance
for the duration of the effect, passing to the
onTweenUpdate() method an interpolated value
between the startValue and endValue.
Typically, the callback function updates some property of the target object,
causing that object to animate over the duration of the effect.
When the effect ends, the Tween objects invokes the
mx.effects.effectClasses.TweenEffectInstance.onTweenEnd()
callback function, if you defined one.
Verwante API-elementen
Overerfde openbare eigenschappen verbergen
Overerfde openbare eigenschappen weergeven| Eigenschap | Gedefinieerd door | ||
|---|---|---|---|
 | constructor : Object
Verwijzing naar het klasseobject of de constructorfunctie van een bepaalde objectinstantie. | Object | |
| duration : Number = 3000
Duration of the animation, in milliseconds. | Tween | ||
| easingFunction : Function [alleen-schrijven]
Sets the easing function for the animation. | Tween | ||
| listener : Object
Object that is notified at each interval of the animation. | Tween | ||
| Methode | Gedefinieerd door | ||
|---|---|---|---|
Tween(listener:Object, startValue:Object, endValue:Object, duration:Number = -1, minFps:Number = -1, updateFunction:Function = null, endFunction:Function = null)
Constructor. | Tween | ||
| addEventListener(type:String, listener:Function, useCapture:Boolean = false, priority:int = 0, useWeakReference:Boolean = false):void
Registreert een gebeurtenislistenerobject bij een object EventDispatcher, zodat de listener een melding van een gebeurtenis ontvangt. | EventDispatcher | |
|
Verzendt een gebeurtenis naar de gebeurtenisstroom. | EventDispatcher | |
Interrupt the tween, jump immediately to the end of the tween,
and invoke the onTweenEnd() callback function. | Tween | ||
|
Controleert of het object EventDispatcher listeners heeft geregistreerd voor een specifiek type gebeurtenis. | EventDispatcher | |
|
Geeft aan of voor een object een opgegeven eigenschap is gedefinieerd. | Object | |
|
Geeft aan of een instantie van de klasse Object zich in de prototypeketen van het object bevindt dat als parameter is opgegeven. | Object | |
Pauses the effect until you call the resume() method. | Tween | ||
|
Geeft aan of de opgegeven eigenschap bestaat en kan worden opgesomd. | Object | |
|
Verwijdert een listener uit het object EventDispatcher. | EventDispatcher | |
Resumes the effect after it has been paused
by a call to the pause() method. | Tween | ||
Plays the effect in reverse,
starting from the current position of the effect. | Tween | ||
Advances the tween effect to the specified position. | Tween | ||
|
Stelt de beschikbaarheid van een dynamische eigenschap voor lusbewerkingen in. | Object | |
By default, the Tween class invokes the
mx.effects.effectClasses.TweenEffectInstance.onTweenUpdate()
callback function on a regular interval on the effect instance
for the duration of the effect, and the optional
mx.effects.effectClasses.TweenEffectInstance.onTweenEnd()
callback function at the end of the effect duration. | Tween | ||
Stops the tween, ending it without dispatching an event or calling
the Tween's endFunction or onTweenEnd(). | Tween | ||
|
Geeft de tekenreeksweergave van dit object weer, geformatteerd volgens de locatiespecifieke conventies. | Object | |
|
Retourneert een tekenreeksrepresentatie van het opgegeven object. | Object | |
|
Retourneert de primitieve waarde van het opgegeven object. | Object | |
|
Controleert of een gebeurtenislistener is geregistreerd bij dit object EventDispatcher of een van de voorouders voor het opgegeven type gebeurtenis. | EventDispatcher | |
duration | eigenschap |
public var duration:Number = 3000| Taalversie: | ActionScript 3.0 |
| Productversie: | Flex 3 |
| Runtimeversies: | Flash Player 9, AIR 1.1 |
Duration of the animation, in milliseconds.
easingFunction | eigenschap |
easingFunction:Function [alleen-schrijven] | Taalversie: | ActionScript 3.0 |
| Productversie: | Flex 3 |
| Runtimeversies: | Flash Player 9, AIR 1.1 |
Sets the easing function for the animation.
The easing function is used to interpolate between
the startValue value and the endValue.
A trivial easing function does linear interpolation,
but more sophisticated easing functions create the illusion of
acceleration and deceleration, which makes the animation seem
more natural.
If no easing function is specified, an easing function based
on the Math.sin() method is used.
The easing function follows the function signature popularized by Robert Penner. The function accepts four arguments. The first argument is the "current time", where the animation start time is 0. The second argument is a the initial value at the beginning of the animation (a Number). The third argument is the ending value minus the initial value. The fourth argument is the duration of the animation. The return value is the interpolated value for the current time (usually a value between the initial value and the ending value).
Flex includes a set of easing functions in the mx.effects.easing package.
Implementatie
public function set easingFunction(value:Function):voidlistener | eigenschap |
public var listener:Object| Taalversie: | ActionScript 3.0 |
| Productversie: | Flex 3 |
| Runtimeversies: | Flash Player 9, AIR 1.1 |
Object that is notified at each interval of the animation.
Tween | () | Constructor |
public function Tween(listener:Object, startValue:Object, endValue:Object, duration:Number = -1, minFps:Number = -1, updateFunction:Function = null, endFunction:Function = null)| Taalversie: | ActionScript 3.0 |
| Productversie: | Flex 3 |
| Runtimeversies: | Flash Player 9, AIR 1.1 |
Constructor.
When the constructor is called, the animation automatically starts playing.
Parameterslistener:Object — Object that is notified at each interval
of the animation. You typically pass the this
keyword as the value.
The listener must define the
onTweenUpdate() method and optionally the
onTweenEnd() method.
The former method is invoked for each interval of the animation,
and the latter is invoked just after the animation finishes.
| |
startValue:Object — Initial value(s) of the animation.
Either a number or an array of numbers.
If a number is passed, the Tween interpolates
between this number and the number passed
in the endValue parameter.
If an array of numbers is passed,
each number in the array is interpolated.
| |
endValue:Object — Final value(s) of the animation.
The type of this argument must match the startValue
parameter.
| |
duration:Number (default = -1) | |
minFps:Number (default = -1)onTweenUpdate() method should be called every second.
The tween code tries to call the onTweenUpdate()
method as frequently as possible (up to 100 times per second).
However, if the frequency falls below minFps,
the duration of the animation automatically increases.
As a result, an animation that temporarily freezes
(because it is not getting any CPU cycles) begins again
where it left off, instead of suddenly jumping ahead.
| |
updateFunction:Function (default = null)listener.OnTweenUpdate()
| |
endFunction:Function (default = null)listener.OnTweenEnd()
|
endTween | () | methode |
public function endTween():void| Taalversie: | ActionScript 3.0 |
| Productversie: | Flex 3 |
| Runtimeversies: | Flash Player 9, AIR 1.1 |
Interrupt the tween, jump immediately to the end of the tween,
and invoke the onTweenEnd() callback function.
pause | () | methode |
public function pause():void| Taalversie: | ActionScript 3.0 |
| Productversie: | Flex 3 |
| Runtimeversies: | Flash Player 9, AIR 1.1 |
Pauses the effect until you call the resume() method.
resume | () | methode |
public function resume():void| Taalversie: | ActionScript 3.0 |
| Productversie: | Flex 3 |
| Runtimeversies: | Flash Player 9, AIR 1.1 |
Resumes the effect after it has been paused
by a call to the pause() method.
reverse | () | methode |
public function reverse():void| Taalversie: | ActionScript 3.0 |
| Productversie: | Flex 3 |
| Runtimeversies: | Flash Player 9, AIR 1.1 |
Plays the effect in reverse, starting from the current position of the effect.
seek | () | methode |
public function seek(playheadTime:Number):void| Taalversie: | ActionScript 3.0 |
| Productversie: | Flex 3 |
| Runtimeversies: | Flash Player 9, AIR 1.1 |
Advances the tween effect to the specified position.
Parameters
playheadTime:Number — The position, in milliseconds, between 0
and the value of the duration property.
|
setTweenHandlers | () | methode |
public function setTweenHandlers(updateFunction:Function, endFunction:Function):void| Taalversie: | ActionScript 3.0 |
| Productversie: | Flex 3 |
| Runtimeversies: | Flash Player 9, AIR 1.1 |
By default, the Tween class invokes the
mx.effects.effectClasses.TweenEffectInstance.onTweenUpdate()
callback function on a regular interval on the effect instance
for the duration of the effect, and the optional
mx.effects.effectClasses.TweenEffectInstance.onTweenEnd()
callback function at the end of the effect duration.
This method lets you specify different methods as the update and the end callback functions.
Parameters
updateFunction:Function — Specifies the update callback function.
| |
endFunction:Function — Specifies the end callback function.
|
stop | () | methode |
public function stop():void| Taalversie: | ActionScript 3.0 |
| Productversie: | Flex 3 |
| Runtimeversies: | Flash Player 9, AIR 1.1 |
Stops the tween, ending it without dispatching an event or calling
the Tween's endFunction or onTweenEnd().
Wed Jun 13 2018, 11:42 AM Z