Script Keyframe dialog box

Used to script a keyframe. Opens when the Script button is clicked in the Animation KeyFrames dialog box, or a keyframe is double-clicked in the Animation KeyFrames list box.

Script KeyFrame dialog box

KeyFrame

Displays the name of the keyframe that is selected in the Animation KeyFrames dialog box.

Frame Number

Sets the keyframe's frame number.

Interpolation

Sets how the path the elements follow when moving to the keyframe is defined.

• Linear
— The path followed between key frames will be a straight line. In most cases, this results in a jerky, unnatural motion.

• Spline
— A curve is fitted to the path the elements follow between key frames, which results in a smoother, more natural motion.

Velocity

Sets how speed varies as the elements move to the keyframe.

• Constant Speed
— The elements move at a constant velocity to the next keyframe.

• Accelerate
— The next movement starts at zero velocity and moves to the next keyframe with constant acceleration, as if it is initially at rest and is acted on by a constant force.

• Decelerate
— The next motion starts with a velocity that declines to zero at the next keyframe, as if the object is initially moving and is acted on by a constant opposing force.

• Accelerate-Decelerate
— Combines the Accelerate and Decelerate options. The elements start at rest, accelerate until halfway until the next keyframe, and then decelerate to rest by the next keyframe.

• Infinite
— The elements “jump” instantaneously to their position in the next keyframe.