The EaseInOutBase class is the base class that provide easing capability.
The EaseInOutBase class defines easing as consisting of two phases:
the acceleration, or ease in phase, followed by the deceleration, or ease out phase.
The default behavior of this class returns a linear
interpolation for both easing phases. You can create a subclass
of EaseInOutBase to get more interesting behavior.
MXML SyntaxShow MXML Syntax Hide MXML Syntax
The <s:EaseInOutBase> tag
inherits all of the tag attributes of its of its superclass,
and adds the following tag attributes:
Returns a value that represents the eased fraction during the
ease out phase of the animation.
EaseInOutBase
Property Detail
easeInFraction
property
easeInFraction:Number
Language Version :
ActionScript 3.0
Product Version :
Flex 4
Runtime Versions :
Flash Player 10, AIR 1.5
The percentage of an animation that should be spent accelerating.
This factor sets an implicit
"easeOut" parameter, equal to (1 - easeIn), so that any time not
spent easing in is spent easing out. For example, to have an easing
equation that spends half the time easing in and half easing out,
set easeIn to .5.
Valid values are between 0.0 and 1.0.
The default value is .5.
Implementation public function get easeInFraction():Number public function set easeInFraction(value:Number):void
Constructor Detail
EaseInOutBase
()
Constructor
public function EaseInOutBase(easeInFraction:Number)
Language Version :
ActionScript 3.0
Product Version :
Flex 4
Runtime Versions :
Flash Player 10, AIR 1.5
Constructor.
Parameters
easeInFraction:Number (default = NaN) — 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.
Method Detail
ease
()
method
public function ease(fraction:Number):Number
Language Version :
ActionScript 3.0
Product Version :
Flex 4
Runtime Versions :
Flash Player 10, AIR 1.5
Takes the fraction representing the elapsed duration of an animation
(a value between 0.0 to 1.0) and returns a new elapsed value.
This value is used to calculate animated property values.
By changing the value of the elapsed fraction, you effectively change
the animation of the property.
For EaseInOutBase, this method calculates the eased fraction
value based on the easeInFraction property. If
fraction is less than easeInFraction,
this method calls the easeIn() method. Otherwise it
calls the easeOut() method.
It is expected
that these functions are overridden in a subclass.
Parameters
fraction:Number — The elapsed fraction of the animation.
Returns
Number — The eased fraction of the animation.
easeIn
()
method
protected function easeIn(fraction:Number):Number
Language Version :
ActionScript 3.0
Product Version :
Flex 4
Runtime Versions :
Flash Player 10, AIR 1.5
Returns a value that represents the eased fraction during the
ease in phase of the animation. The value returned by this class
is simply the fraction itself, which represents a linear
interpolation of the fraction. More interesting behavior is
implemented by subclasses of EaseInOutBase.
Parameters
fraction:Number — The fraction elapsed of the easing in phase
of the animation, between 0.0 and 1.0.
Returns
Number — A value that represents the eased value for this
phase of the animation.
easeOut
()
method
protected function easeOut(fraction:Number):Number
Language Version :
ActionScript 3.0
Product Version :
Flex 4
Runtime Versions :
Flash Player 10, AIR 1.5
Returns a value that represents the eased fraction during the
ease out phase of the animation. The value returned by this class
is simply the fraction itself, which represents a linear
interpolation of the fraction. More interesting behavior is
implemented by subclasses of EaseInOutBase.
Parameters
fraction:Number — The fraction elapsed of the easing out phase
of the animation, between 0.0 and 1.0.
Returns
Number — A value that represents the eased value for this
phase of the animation.
Object
Hide MXML Syntax
Show MXML Syntax