Packagefl.motion
Classpublic class Motion
InheritanceMotion Inheritance MotionBase Inheritance Object

Language Version: ActionScript 3.0
Runtime Versions: AIR 1.0 Flash Player 9.0.28.0

The Motion class stores a keyframe animation sequence that can be applied to a visual object. The animation data includes position, scale, rotation, skew, color, filters, and easing. The Motion class has methods for retrieving data at specific points in time, and interpolating values between keyframes automatically.

Default MXML PropertykeyframesCompact

See also

Motion XML Elements

Public Properties
 PropertyDefined By
 Inheritedconstructor : Object
A reference to the class object or constructor function for a given object instance.
Object
 Inheritedduration : int
Controls the Motion instance's length of time, measured in frames.
MotionBase
 Inheritedis3D : Boolean
Specifies whether the motion contains 3D property changes.
MotionBase
 Inheritedkeyframes : Array
An array of keyframes that define the motion's behavior over time.
MotionBase
  keyframesCompact : Array
A compact array of keyframes, where each index is occupied by a keyframe.
Motion
 Inheritedprototype : Object
[static] A reference to the prototype object of a class or function object.
Object
  source : Source
An object that stores information about the context in which the motion was created, such as frame rate, dimensions, transformation point, and initial position, scale, rotation, and skew.
Motion
Public Methods
 MethodDefined By
  
Motion(xml:XML = null)
Constructor for Motion instances.
Motion
 Inherited
addFilterPropertyArray(index:int, name:String, values:Array, startFrame:int = -1, endFrame:int = -1):void
Modifies a filter property in all corresponding keyframes for a Motion object.
MotionBase
 Inherited
addKeyframe(newKeyframe:KeyframeBase):void
Adds a keyframe object to the Motion instance.
MotionBase
 Inherited
addPropertyArray(name:String, values:Array, startFrame:int = -1, endFrame:int = -1):void
Stores an array of values in corresponding keyframes for a declared property of the Motion class.
MotionBase
  
fromXMLString(xmlString:String):Motion
[static] A method needed to create a Motion instance from a string of XML.
Motion
  
getColorTransform(index:int):ColorTransform
Retrieves an interpolated ColorTransform object at a specific time index in the Motion instance.
Motion
 Inherited
getCurrentKeyframe(index:int, tweenableName:String = ""):KeyframeBase
Retrieves the keyframe that is currently active at a specific frame in the Motion instance.
MotionBase
  
getFilters(index:Number):Array
Retrieves an interpolated array of filters at a specific time index in the Motion instance.
Motion
 Inherited
getMatrix3D(index:int):Object
Returns the Matrix3D object for the specified index position of the frame of animation.
MotionBase
 Inherited
getNextKeyframe(index:int, tweenableName:String = ""):KeyframeBase
Retrieves the next keyframe after a specific frame in the Motion instance.
MotionBase
 Inherited
getValue(index:Number, tweenableName:String):Number
Retrieves the value for an animation property at a point in time.
MotionBase
 Inherited
hasOwnProperty(name:String):Boolean
Indicates whether an object has a specified property defined.
Object
 Inherited
initFilters(filterClasses:Array, gradientSubarrayLengths:Array, startFrame:int = -1, endFrame:int = -1):void
Initializes the filters list for the target object and copies the list of filters to each Keyframe instance of the Motion object.
MotionBase
  
interpolateFilter(fromFilter:BitmapFilter, toFilter:BitmapFilter, progress:Number):BitmapFilter
[static] Blends filters smoothly from one filter object to another.
Motion
  
interpolateFilters(fromFilters:Array, toFilters:Array, progress:Number):Array
[static] Blends filters smoothly from one array of filter objects to another.
Motion
 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
overrideTargetTransform(scale:Boolean = true, skew:Boolean = true, rotate:Boolean = true):void
MotionBase
 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
setValue(index:int, tweenableName:String, value:Number):void
Sets the value of a specific tweenables property at a given time index in the Motion instance.
MotionBase
 Inherited
toString():String
Returns the string representation of the specified object.
Object
 Inherited
useRotationConcat(index:int):Boolean
Rotates the target object when data for the motion is supplied by the addPropertyArray() method.
MotionBase
 Inherited
valueOf():Object
Returns the primitive value of the specified object.
Object
Property Detail
keyframesCompactproperty
keyframesCompact:Array  [read-write]

Language Version: ActionScript 3.0
Runtime Versions: AIR 1.0 Flash Player 9.0.28.0

A compact array of keyframes, where each index is occupied by a keyframe. By contrast, a sparse array has empty indices (as in the keyframes property). In the compact array, no null values are used to fill indices between keyframes. However, the index of a keyframe in keyframesCompact likely does not match its index in the keyframes array.

This property is primarily used for compatibility with the Flex MXML compiler, which generates a compact array from the motion XML.



Implementation
    public function get keyframesCompact():Array
    public function set keyframesCompact(value:Array):void

See also

keyframes
sourceproperty 
public var source:Source

Language Version: ActionScript 3.0
Runtime Versions: AIR 1.0 Flash Player 9.0.28.0

An object that stores information about the context in which the motion was created, such as frame rate, dimensions, transformation point, and initial position, scale, rotation, and skew.

Constructor Detail
Motion()Constructor
public function Motion(xml:XML = null)

Language Version: ActionScript 3.0
Runtime Versions: AIR 1.0 Flash Player 9.0.28.0

Constructor for Motion instances. By default, one initial keyframe is created automatically, with default transform properties.

Parameters
xml:XML (default = null) — Optional E4X XML object defining a Motion instance.
Method Detail
fromXMLString()method
public static function fromXMLString(xmlString:String):Motion

Language Version: ActionScript 3.0
Runtime Versions: AIR 1.0 Flash Player 9.0.28.0

A method needed to create a Motion instance from a string of XML.

Parameters

xmlString:String — A string of motion XML.

Returns
Motion — A new Motion instance.
getColorTransform()method 
override public function getColorTransform(index:int):ColorTransform

Language Version: ActionScript 3.0
Runtime Versions: AIR 1.0 Flash Player 9.0.28.0

Retrieves an interpolated ColorTransform object at a specific time index in the Motion instance.

Parameters

index:int — The time index of a frame in the Motion instance, as an integer greater than or equal to zero.

Returns
ColorTransform — The interpolated ColorTransform object.

See also

flash.geom.ColorTransform
getFilters()method 
override public function getFilters(index:Number):Array

Language Version: ActionScript 3.0
Runtime Versions: AIR 1.0 Flash Player 9.0.28.0

Retrieves an interpolated array of filters at a specific time index in the Motion instance.

Parameters

index:Number — The time index of a frame in the Motion instance, as an integer greater than or equal to zero.

Returns
Array — The interpolated array of filters. If there are no applicable filters, returns an empty array.

See also

flash.filters
interpolateFilter()method 
public static function interpolateFilter(fromFilter:BitmapFilter, toFilter:BitmapFilter, progress:Number):BitmapFilter

Language Version: ActionScript 3.0
Runtime Versions: AIR 1.0 Flash Player 9.0.28.0

Blends filters smoothly from one filter object to another.

Parameters

fromFilter:BitmapFilter — The starting filter object.
 
toFilter:BitmapFilter — The ending filter object.
 
progress:Number — The percent of the transition as a decimal, where 0 is the start and 1 is the end.

Returns
BitmapFilter — The interpolated filter object.

See also

flash.filters
interpolateFilters()method 
public static function interpolateFilters(fromFilters:Array, toFilters:Array, progress:Number):Array

Language Version: ActionScript 3.0
Runtime Versions: AIR 1.0 Flash Player 9.0.28.0

Blends filters smoothly from one array of filter objects to another.

Parameters

fromFilters:Array — The starting array of filter objects.
 
toFilters:Array — The ending array of filter objects.
 
progress:Number — The percent of the transition as a decimal, where 0 is the start and 1 is the end.

Returns
Array — The interpolated array of filter objects.

See also

flash.filters



© 2004-2008 Adobe Systems Incorporated. All rights reserved.
Wed Nov 19 2008, 09:06 AM -08:00
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