Power

套件	spark.effects.easing
類別	public class Power
繼承	Power EaseInOutBase Object

語言版本:

ActionScript 3.0

產品版本:

Flex 4

執行階段版本:

Flash Player 10, AIR 1.5

The Power class defines the easing functionality using a polynomial expression. Easing consists of two phases: the acceleration, or ease in phase, followed by the deceleration, or ease out phase. The rate of acceleration and deceleration is based on the exponent property. The higher the value of the exponent property, the greater the acceleration and deceleration. Use the easeInFraction property to specify the percentage of an animation accelerating.

MXML 語法

隱藏 MXML 語法

The <s:Power> tag inherits all of the tag attributes of its of its superclass, and adds the following tag attributes:

  <s:Power
    id="ID"
    exponent="2"
   />

檢視範例

公用屬性

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顯示繼承公用屬性

	屬性		定義自
		constructor : Object 類別物件的參照或是特定物件實體的建構函數。	Object
		easeInFraction : Number The percentage of an animation that should be spent accelerating.	EaseInOutBase
		exponent : Number The exponent used in the easing calculation.	Power

公用方法

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	方法		定義自
		Power(easeInFraction:Number = 0.5, exponent:Number = 2) Constructor.	Power
		ease(fraction:Number):Number Takes the fraction representing the elapsed duration of an animation (a value between 0.0 to 1.0) and returns a new elapsed value.	EaseInOutBase
		hasOwnProperty(name:String):Boolean 指出物件是否有已定義的指定屬性。	Object
		isPrototypeOf(theClass:Object):Boolean 指出 Object 類別的實體是否位於指定為參數的物件原型鏈中。	Object
		propertyIsEnumerable(name:String):Boolean 指出指定的屬性是否存在，以及是否可列舉。	Object
		setPropertyIsEnumerable(name:String, isEnum:Boolean = true):void 為迴圈作業設定動態屬性的可用性。	Object
		toLocaleString():String 傳回代表此物件的字串，根據地區特定慣例進行格式化。	Object
		toString():String 會傳回指定之物件的字串形式。	Object
		valueOf():Object 會傳回指定之物件的基本值。	Object

保護方法

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顯示繼承保護方法

	方法		定義自
		easeIn(fraction:Number):Number Returns a value that represents the eased fraction during the ease in phase of the animation.	EaseInOutBase
		easeOut(fraction:Number):Number Returns a value that represents the eased fraction during the ease out phase of the animation.	EaseInOutBase

屬性詳細資訊

exponent

屬性

exponent:Number

語言版本:

ActionScript 3.0

產品版本:

Flex 4

執行階段版本:

Flash Player 10, AIR 1.5

The exponent used in the easing calculation. The higher the value of the exponent property, the greater the acceleration and deceleration. For example, to get quadratic behavior, set exponent to 2. To get cubic behavior, set exponent to 3.

預設值為 2。

實作
public function get exponent():Number
public function set exponent(value:Number):void

建構函式詳細資料

()

建構函式

public function Power(easeInFraction:Number = 0.5, exponent:Number = 2)

語言版本:

ActionScript 3.0

產品版本:

Flex 4

執行階段版本:

Flash Player 10, AIR 1.5

Constructor.

參數

	`easeInFraction:Number` (default = `0.5`) — The fraction of the overall duration in the acceleration phase, between 0.0 and 1.0.

	`exponent:Number` (default = `2`) — The exponent used in the easing calculation.

範例如何使用本範例

SinePowerEffectExample.mxml

<?xml version="1.0"?>
<!-- Simple example to demonstrate the s:Sine and s:Power 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>
        <s:Sine id="sineEasing"
            easeInFraction="0.3"/>
        <s:Power id="powerEasing"
            exponent="4"/>
        <s:Move id="moveRight" 
            target="{myImage}"
            xBy="500"
            duration="2000"
            easer="{powerEasing}"/>
        <s:Move id="moveLeft" 
            target="{myImage}"
            xBy="-500"
            duration="2000"
            easer="{sineEasing}"/>
    </fx:Declarations>


    <s:Panel id="examplePanel"
        title="Sine and Power Effect Example"
        width="75%" height="75%">

        <!-- Directions -->
        <s:VGroup id="detailsBox" width="50%" top="5" left="5">
            <s:Label width="99%" color="blue"
                text="Click the buttons to watch the effect."/>
        </s:VGroup>

        <mx:Image id="myImage" top="20"
            source="@Embed(source='assets/logo.jpg')"/>
            
        <s:Button label="Move Right"
             bottom="10" left="5" 
            click="moveRight.end();moveRight.play();"/>
            
        <s:Button label="Move Left" 
            bottom="10" left="100" 
            click="moveLeft.end();moveLeft.play();"/>
    </s:Panel>
</s:Application>

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Power - AS3 Flex

類別 x

exponent

Power