ActionScript® 3.0 Reference for the Adobe® Flash® Platform
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mx.effects.easing 

Elastic  - AS3 Flex
Packagemx.effects.easing
Classpublic class Elastic
InheritanceElastic Inheritance Object

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

The Elastc class defines three easing functions to implement motion with Flex effect classes, where the motion is defined by an exponentially decaying sine wave. For more information, see http://www.robertpenner.com/profmx.

More examples

Using MX easing functions

Public Properties
 PropertyDefined By
 Inheritedconstructor : Object
A reference to the class object or constructor function for a given object instance.
Object
Public Methods
 MethodDefined By
  
easeIn(t:Number, b:Number, c:Number, d:Number, a:Number = 0, p:Number = 0):Number
[static] The easeIn() method starts motion slowly, and then accelerates motion as it executes.
Elastic
  
easeInOut(t:Number, b:Number, c:Number, d:Number, a:Number = 0, p:Number = 0):Number
[static] The easeInOut() method combines the motion of the easeIn() and easeOut() methods to start the motion slowly, accelerate motion, then decelerate.
Elastic
  
easeOut(t:Number, b:Number, c:Number, d:Number, a:Number = 0, p:Number = 0):Number
[static] The easeOut() method starts motion fast, and then decelerates motion as it executes.
Elastic
 Inherited
hasOwnProperty(name:String):Boolean
Indicates whether an object has a specified property defined.
Object
 Inherited
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
 Inherited
propertyIsEnumerable(name:String):Boolean
Indicates whether the specified property exists and is enumerable.
Object
 Inherited
setPropertyIsEnumerable(name:String, isEnum:Boolean = true):void
Sets the availability of a dynamic property for loop operations.
Object
 Inherited
toLocaleString():String
Returns the string representation of this object, formatted according to locale-specific conventions.
Object
 Inherited
toString():String
Returns the string representation of the specified object.
Object
 Inherited
valueOf():Object
Returns the primitive value of the specified object.
Object
Method Detail

easeIn

()method
public static function easeIn(t:Number, b:Number, c:Number, d:Number, a:Number = 0, p:Number = 0):Number

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

The easeIn() method starts motion slowly, and then accelerates motion as it executes.

Parameters

t:Number — Specifies time.
 
b:Number — Specifies the initial position of a component.
 
c:Number — Specifies the total change in position of the component.
 
d:Number — Specifies the duration of the effect, in milliseconds.
 
a:Number (default = 0) — Specifies the amplitude of the sine wave.
 
p:Number (default = 0) — Specifies the period of the sine wave.

Returns
Number — Number corresponding to the position of the component.

easeInOut

()method 
public static function easeInOut(t:Number, b:Number, c:Number, d:Number, a:Number = 0, p:Number = 0):Number

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

The easeInOut() method combines the motion of the easeIn() and easeOut() methods to start the motion slowly, accelerate motion, then decelerate.

Parameters

t:Number — Specifies time.
 
b:Number — Specifies the initial position of a component.
 
c:Number — Specifies the total change in position of the component.
 
d:Number — Specifies the duration of the effect, in milliseconds.
 
a:Number (default = 0) — Specifies the amplitude of the sine wave.
 
p:Number (default = 0) — Specifies the period of the sine wave.

Returns
Number — Number corresponding to the position of the component.

easeOut

()method 
public static function easeOut(t:Number, b:Number, c:Number, d:Number, a:Number = 0, p:Number = 0):Number

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

The easeOut() method starts motion fast, and then decelerates motion as it executes.

Parameters

t:Number — Specifies time.
 
b:Number — Specifies the initial position of a component.
 
c:Number — Specifies the total change in position of the component.
 
d:Number — Specifies the duration of the effect, in milliseconds.
 
a:Number (default = 0) — Specifies the amplitude of the sine wave.
 
p:Number (default = 0) — Specifies the period of the sine wave.

Returns
Number — Number corresponding to the position of the component.



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