Timelines

Timelines are used to direct the activity of an Actor during an animation. Each Actor has four timelines known as the Costume, Movement, Rotation, and Scale timelines. The horizontal turquois, yellow, green, and lines are the timelines.

A timeline spans a number of frames and has a Keyframe associated with it. The Keyframe is the frame in which the action of the Actor is exactly exactly specified, other frames spanned by the timeline have the action of the Actor determined by interpolation.

The Keyframe is always the last frame in the timeline. A timeline therefore is a range of frames where an action of the Actor is determined from the details specified in the Keyframe at the end of that timeline.

A timeline spans the current frame if the first frame in the timeline is less than or equal to the current frame and if the last frame in the timeline is greater than or equal to the current frame.