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Last updated 5/2/2011

Chapter 45: Timeline object

Availability

Flash MX 2004.

Description

The Timeline object represents the Flash timeline, which can be accessed for the current document by using

fl.getDocumentDOM().getTimeline(). This method returns the timeline of the current scene or symbol that is

being edited.

When you work with scenes, each scene’s timeline has an index value, and can be accessed for the current document

fl.getDocumentDOM().timelines[i]. (In this example, i is the index of the value of the timeline.)

When you work with frames by using the methods and properties of the Timeline object, remember that the frame

value is a zero-based index (not the actual frame number in the sequence of frames in the timeline). That is, the first

frame has a frame index of 0.

Method summary

The following methods are available for the Timeline object:

Method Description

timeline.addMotionGuide() Adds a motion guide layer above the current layer and attaches the

current layer to the newly added guide layer.

timeline.addNewLayer() Adds a new layer to the document and makes it the current layer.

timeline.clearFrames() Deletes all the contents from a frame or range of frames on the current

layer.

timeline.clearKeyframes() Converts a keyframe to a regular frame and deletes its contents on the

current layer.

timeline.convertToBlankKeyframes() Converts frames to blank keyframes on the current layer.

timeline.convertToKeyframes() Converts a range of frames to keyframes (or converts the selection if no

frames are specified) on the current layer.

timeline.copyFrames() Copies a range of frames on the current layer to the clipboard.

timeline.copyLayers() Copies a range of Timeline layers to the clipboard.

timeline.copyMotion() Copies motion on selected frames, either from a motion tween or from

frame-by-frame animation, so it can be applied to other frames.

timeline.copyMotionAsAS3() Copies motion on selected frames, either from a motion tween or from

frame-by-frame animation, to the clipboard as ActionScript 3.0 code.

timeline.createMotionObject() Creates a new motion object at a designated start and end frame.

timeline.createMotionTween() Sets the frame.tweenType property to motion for each selected

keyframe on the current layer, and converts each frame’s contents to a

single symbol instance if necessary.

timeline.cutFrames() Cuts a range of frames on the current layer from the timeline and saves

them to the clipboard.

timeline.cutLayers() Cuts a range of Timeline layers and saves them to the clipboard.

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Adobe Extending Flash Professional CS5 Manuale Utente Pagina 485