Packagemx.effects.easing
Classpublic class Quadratic
InheritanceQuadratic Inheritance Object

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


Starting with Flex 4.0, Apache recommends that you use the spark.effects.easing.Power class as an alternative to this class.

The Spark effects provided as of Flex 4 use classes which implement the IEaser interface instead of the easing functions in classes like Quadratic for the earlier Flex 3 effects. To achieve the same functionality of Quadratic, create a Power instance with an exponent of 2 and set the easeInFraction appropriately to get the desired result.


The Quadratic class defines three easing functions to implement quadratic motion with Flex effect classes. The acceleration of motion for a Quadratic easing equation is slower than for a Cubic or Quartic easing equation. For more information, see http://www.robertpenner.com/profmx.



Public Methods
 MethodDefined By
  
easeIn(t:Number, b:Number, c:Number, d:Number):Number
[static] The easeIn() method starts motion from a zero velocity, and then accelerates motion as it executes.
Quadratic
  
easeInOut(t:Number, b:Number, c:Number, d:Number):Number
[static] The easeInOut() method combines the motion of the easeIn() and easeOut() methods to start the motion from a zero velocity, accelerate motion, then decelerate to a zero velocity.
Quadratic
  
easeOut(t:Number, b:Number, c:Number, d:Number):Number
[static] The easeOut() method starts motion fast, and then decelerates motion to a zero velocity as it executes.
Quadratic
Method Detail
easeIn()method
public static function easeIn(t:Number, b:Number, c:Number, d:Number):Number

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

The easeIn() method starts motion from a zero velocity, 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.

Returns
Number — Number corresponding to the position of the component.
easeInOut()method 
public static function easeInOut(t:Number, b:Number, c:Number, d:Number):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 from a zero velocity, accelerate motion, then decelerate to a zero velocity.

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.

Returns
Number — Number corresponding to the position of the component.
easeOut()method 
public static function easeOut(t:Number, b:Number, c:Number, d:Number):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 to a zero velocity 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.

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