| Pacchetto | spark.effects.animation |
| Classe | public class Keyframe |
| Ereditarietà | Keyframe  Object |
| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 4 |
| Versioni runtime: | Flash Player 10, AIR 1.5 |
The collection of keyframes for an effect is called the effect's motion path. A motion path can define any number of keyframes. The effect then calculates the value of the property by interpolating between the values specified by two key frames.
Use the MotionPath class to hold the collection of Keyframe objects that represent the motion path of the effect. The MotionPath class specifies the name of the property on the target, and the collection of Keyframes objects specify the values of the property at different times during the effect.
Sintassi MXML
Mostra sintassi MXML
Nascondi sintassi MXMLThe <s:Keyframe> tag
inherits the tag attributes of its superclass,
and adds the following tag attributes:
<s:Keyframe
id="ID"
easier="Linear"
time="val"
value="val"
valueBy="val"
/>
Altri esempi
Elementi API correlati
| Proprietà | Definito da | ||
|---|---|---|---|
 | constructor : Object
Un riferimento all'oggetto classe o alla funzione di costruzione per una determinata istanza di oggetto. | Object | |
| easer : IEaser
The easing behavior applied to the motion between the previous
Keyframe object in motion path and this Keyframe object. | Keyframe | ||
| time : Number
The time, in milliseconds, at which the effect target
for this keyframe should have the value
specified by the value property. | Keyframe | ||
| value : Object
The value that the property of the effect target should have
at the time specified by the time property. | Keyframe | ||
| valueBy : Object
Optional parameter which, if specified, is used to
calculate value in this keyframe or
the previous one. | Keyframe | ||
| Metodo | Definito da | ||
|---|---|---|---|
Constructor. | Keyframe | ||
Returns a copy of this Keyframe object. | Keyframe | ||
|
Indica se per un oggetto è definita una proprietà specifica. | Object | |
|
Indica se un'istanza della classe Object si trova nella catena di prototipi dell'oggetto specificato come parametro. | Object | |
|
Indica se la proprietà specificata esiste ed è enumerabile. | Object | |
|
Imposta la disponibilità di una proprietà dinamica per le operazioni cicliche. | Object | |
|
Restituisce la rappresentazione in formato stringa di questo oggetto, formattato in base alle convenzioni specifiche per le versioni localizzate. | Object | |
|
Restituisce la rappresentazione in formato stringa dell'oggetto specificato. | Object | |
|
Restituisce il valore di base dell'oggetto specificato. | Object | |
easer | proprietà |
public var easer:IEaser| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 4 |
| Versioni runtime: | Flash Player 10, AIR 1.5 |
The easing behavior applied to the motion between the previous Keyframe object in motion path and this Keyframe object. By default, the easing is linear, or no easing at all.
Note that the parent effect
might have easing applied already over the entire
animation. Therefore, if easing per keyframe interval is desired
instead, it is necessary to set the overall effect
easer to linear easing (spark.effects.easing.Linear) and then
set the easer on each Keyframe as appropriate.
Because this property acts on the interval between the previous
Keyframe object in a sequence and this Keyframe object, the easer
property is ignored on the first Keyframe object in a sequence.
Il valore predefinito è Linear.
time | proprietà |
public var time:Number| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 4 |
| Versioni runtime: | Flash Player 10, AIR 1.5 |
The time, in milliseconds, at which the effect target
for this keyframe should have the value
specified by the value property. This time
is relative to the starting time of the effect defined
with this keyframe.
value | proprietà |
public var value:Object| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 4 |
| Versioni runtime: | Flash Player 10, AIR 1.5 |
The value that the property of the effect target should have
at the time specified by the time property.
valueBy | proprietà |
public var valueBy:Object| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 4 |
| Versioni runtime: | Flash Player 10, AIR 1.5 |
Optional parameter which, if specified, is used to
calculate value in this keyframe or
the previous one. If value is not set in
the previous keyframe, but this keyframe defines both
value and valueBy, then value
in the previous keyframe is calculated as value
in this keyframe minus valueBy in this keyframe.
Similarly, if value in this keyframe is not
defined, but valueBy in this keyframe and
value in the previous keyframe are both set,
then value in this keyframe is calculated as
value in the previous keyframe plus
valueBy in this keyframe.
valueBy is ignored for the first
keyframe in a sequence, since it applies only to the interval
preceding a keyframe, and there is no preceding interval for the
first keyframe.
Keyframe | () | Funzione di costruzione |
public function Keyframe(time:Number = NaN, value:Object = null, valueBy:Object = null)| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 4 |
| Versioni runtime: | Flash Player 10, AIR 1.5 |
Constructor.
Parametritime:Number (default = NaN)value parameter.
| |
value:Object (default = null)time.
| |
valueBy:Object (default = null)value to be calculated dynamically by
adding valueBy to the value of
the previous keyframe in the set of keyframes in a MotionPath
object. This value is ignored if this is the first
Keyframe in a sequence.
|
clone | () | metodo |
<?xml version="1.0"?>
<!-- Simple example to demonstrate the s:Keyframe and s:MotionPath classes. -->
<s:Application
xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:mx="library://ns.adobe.com/flex/mx"
xmlns:s="library://ns.adobe.com/flex/spark">
<fx:Declarations>
<fx:Vector id="kf" type="spark.effects.animation.MotionPath">
<s:MotionPath property="scaleX">
<s:Keyframe time="250" value="0.5"/>
<s:Keyframe time="500" value="1.0"/>
<s:Keyframe time="750" value="0.5"/>
<s:Keyframe time="1000" value="1.0"/>
<s:Keyframe time="1250" value="0.5"/>
<s:Keyframe time="1500" value="1.0"/>
</s:MotionPath>
<s:MotionPath property="scaleY">
<s:Keyframe time="250" value="0.5"/>
<s:Keyframe time="500" value="1.0"/>
<s:Keyframe time="750" value="0.5"/>
<s:Keyframe time="1000" value="1.0"/>
<s:Keyframe time="1250" value="0.5"/>
<s:Keyframe time="1500" value="1.0"/>
</s:MotionPath>
</fx:Vector>
<s:Animate id="shrinkEffect"
motionPaths="{kf}"
target="{myImage}"/>
</fx:Declarations>
<s:Panel id="examplePanel"
title="Keyframe and MotionPath Effect Example"
width="75%" height="75%">
<s:layout>
<s:VerticalLayout paddingTop="10" paddingLeft="10"/>
</s:layout>
<!-- Directions -->
<s:VGroup id="detailsBox" width="50%" left="0">
<s:Label width="99%" color="blue"
text="Click the Adobe logo to watch the effect."/>
</s:VGroup>
<mx:Image id="myImage"
source="@Embed(source='assets/logo.jpg')"
click="shrinkEffect.end();shrinkEffect.play();"/>
</s:Panel>
</s:Application>
Tue Jun 12 2018, 02:44 PM Z