Apple Motion 2 - Manual (Page 673)

Chapter 9 Using the Replicator 673
Random Start Frame: A checkbox that introduces variation into elements using
QuickTime objects as their source objects. If it’s turned on, each element in the pattern
begins at a different frame of the animation. Stills are chosen randomly if Play Frames is
turned off.
Source Start Frame: Chooses the frame to begin animation, if Play Frames is turned on,
or the still frame to display if Play Frames is turned off. This parameter only appears if
Random Start Frame is turned off.
Source Start Frame Offset: Offsets the start frame chosen in the Source Start Frame
parameter over the pattern. At their origin, the elements play the animation from the
frame specified in the Source Start Frame parameter. Each step away from the origin
advances the start frame by the offset amount. This parameter only appears if Random
Start Frame is turned off.
Hold Frames: Sets the number of times each frame of the source movie is repeated
during playback. The larger the Hold Frames value, the slower your playback.
Hold Frames Randomness: Varies the number of frames to “hold.”
Animating Replicator Parameters
Most of the replicator and replicator cell parameters can be animated by keyframing
them or using Parameter behaviors. If you animate the replicator’s shape-specific
parameters such as Radius, Twists, and Offset (of a Spiral replicator), the pattern on
which the elements are built is animated, not the elements themselves. To animate the
elements of the pattern, you keyframe the parameters in the Cell Controls group (or
the Replicator Cell tab).
Rectangle replicator shape with Origin set to
Top and Source Frame Offset set to 0 When Source Frame Offset is set to 120, the
effect of the offset occurs from the origin of the
cells.
01112.book Page 673 Sunday, March 13, 2005 10:36 PM