spark.effects.easing.Sine - Adobe® Flex® 4 Language Reference (Flex 4)

Package	spark.effects.easing
Class	public class Sine
Inheritance	Sine EaseInOutBase Object

Language Version:

ActionScript 3.0

Product Version:

Flex 4

Runtime Versions:

Flash Player 10, AIR 1.5

The Sine class defines easing functionality using a Sine function. Easing consists of two phases: the acceleration, or ease in phase, followed by the deceleration, or ease out phase. Use the easeInFraction property to specify the percentage of an animation accelerating.

MXML Syntax expanded

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

  <s:Sine
    id="ID"
   />

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Public Properties

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	Property		Defined By
		constructor : Object A reference to the class object or constructor function for a given object instance.	Object
		easeInFraction : Number The percentage of an animation that should be spent accelerating.	EaseInOutBase
		prototype : Object [static] A reference to the prototype object of a class or function object.	Object

Public Methods

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	Method		Defined By
		Sine(easeInFraction:Number = 0.5) Constructor.	Sine
		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 Indicates whether an object has a specified property defined.	Object
		isPrototypeOf(theClass:Object):Boolean Indicates whether an instance of the Object class is in the prototype chain of the object specified as the parameter.	Object
		propertyIsEnumerable(name:String):Boolean Indicates whether the specified property exists and is enumerable.	Object
		setPropertyIsEnumerable(name:String, isEnum:Boolean = true):void Sets the availability of a dynamic property for loop operations.	Object
		toLocaleString():String Returns the string representation of this object, formatted according to locale-specific conventions.	Object
		toString():String Returns the string representation of the specified object.	Object
		valueOf():Object Returns the primitive value of the specified object.	Object

Protected Methods

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	Method		Defined By
		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

Constructor Detail

Sine

()

Constructor

public function Sine(easeInFraction:Number = 0.5)

Language Version:

ActionScript 3.0

Product Version:

Flex 4

Runtime Versions:

Flash Player 10, AIR 1.5

Constructor.

Parameters

easeInFraction:Number (default = 0.5) — Sets the value of the easeInFraction property. The default value is EasingFraction.IN_OUT, which eases in for the first half of the time and eases out for the remainder.

Examples How to use this example

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>