CustomEase

(Beta)

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

Language Version:

ActionScript 3.0

Product Version:

Flash CS3

Runtime Versions:

Flash Player 9.0.28.0, AIR 1.0

The CustomEase class is used to modify specific properties of the easing behavior of a motion tween as the tween progresses over time. A custom easing curve is composed of one or more cubic Bezier curves. You can apply the custom easing curve to all properties at once, or you can define different curves for different properties.

The implementation of this class parallels the Flash CS4 Custom Ease In/Ease Out dialog box. Flash CS4 displays a graph in the Custom Ease In/Ease Out dialog box representing the degree of motion over time. The horizontal axis represents frames, and the vertical axis represents the percent of change of a property through the progression of the tween. The first keyframe is represented as 0%, and the last keyframe is represented as 100%. The slope of the graph's curve represents the rate of change of the object. When the curve is horizontal (no slope), the velocity is zero; when the curve is vertical, an instantaneous rate of change occurs.

Default MXML Propertypoints

Related API Elements

Motion XML Elements

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
		points : Array An ordered collection of points in the custom easing curve.	CustomEase
		target : String The name of the animation property to target.	CustomEase

Public Methods

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

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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. This value must be greater than zero. You can choose any unit (for example, frames, seconds, milliseconds), but your choice must match the `time` unit.

CustomEase - AS3 Flash

Packagesx

Language Elements

Appendixes

Package fl.motion

points

target

getValue