FunctionEase

(Beta)

Package	fl.motion
Class	public class FunctionEase
Inheritance	FunctionEase Object
Implements	ITween

Language Version:

ActionScript 3.0

Product Version:

Flash CS3

Runtime Versions:

Flash Player 9.0.28.0, AIR 1.0

The FunctionEase class allows custom interpolation functions to be used with the fl.motion framework in place of other interpolations like SimpleEase and CustomEase. The fl.motion framework includes several easing functions in the fl.motion.easing package.

View the examples

Related API Elements

Motion XML Elements
fl.motion.easing

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
		easingFunction : Function = null A reference to a function with a (t, b, c, d) signature like the methods in the fl.motion.easing classes.	FunctionEase
		functionName : String The fully qualified name of an easing function, such as fl.motion.easing.Bounce.easeOut().	FunctionEase
		parameters : Array = null An optional array of values to be passed to the easing function as additional arguments.	FunctionEase
		target : String The name of the animation property to target.	FunctionEase

Public Methods

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Show Inherited Public Methods

	Method		Defined By
		FunctionEase(xml:XML = null) Constructor for FunctionEase instances.	FunctionEase
		getValue(time:Number, begin:Number, change:Number, duration:Number):Number Calculates an interpolated value for a numerical property of animation, using the specified easing function.	FunctionEase
		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

Property Detail

Constructor Detail

Method Detail

Examples How to use this example

FunctionEaseExample.as

This example uses the Back effect from the fl.motion.easing package as a custom function ease:

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import fl.motion.Animator;
//// These two lines must be added to use <FunctionEase>
import fl.motion.easing.*; // import the easing classes
fl.motion.easing.Back; // add a reference to every easing class you want to use
////
var mc2_xml:XML = <Motion duration="30" xmlns="fl.motion.*" xmlns:geom="flash.geom.*" xmlns:filters="flash.filters.*">
    <source>
        <Source frameRate="30" x="85.05" y="90.05" scaleX="0.999" scaleY="0.999" rotation="0" elementType="movie clip" instanceName="mc2" symbolName="BoxSymbol" linkageID="Box" class="Box">
            <dimensions>
                <geom:Rectangle left="-39" top="-52" width="77" height="97"/>
            </dimensions>
            <transformationPoint>
                <geom:Point x="0.5019480519480519" y="0.5010309278350515"/>
            </transformationPoint>
        </Source>
    </source>

    <Keyframe index="0">
        <tweens>
            <FunctionEase functionName="fl.motion.easing.Back.easeInOut"/>
        </tweens>
    </Keyframe>

    <Keyframe index="29" x="330" y="0"/>
</Motion>;

var mc2_animator:Animator = new Animator(mc2_xml, mc2);
mc2_animator.play();

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	`time:Number` — The time value, which must lie between `0` and `duration`, inclusive. You can choose any unit (for example, frames, seconds, milliseconds), but your choice must match the `duration` unit.

	`begin:Number` — The value of the animation property at the start of the tween, when time is 0.

	`change:Number` — The change in the value of the animation property over the course of the tween. The value can be positive or negative. For example, if an object rotates from 90 to 60 degrees, the `change` is -30.

	`duration:Number` — The length of time for the tween. Must be greater than zero. You can choose any unit (for example, frames, seconds, milliseconds), but your choice must match the `time` unit.

FunctionEase - AS3 Flash

Packagesx

Language Elements

Appendixes

Package fl.motion

easingFunction

functionName

parameters

target

getValue