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delegate's speed and direction. If the delegate slows to a stop, the software will
find and use a clip that slows to a stop, if one exists.
In all crowd simulations you must load clips and create transitions before
synthesizing the crowd motion. Often, many clips are used to synthesize
crowds. Automatic transitions relieve you of having to create transitions
between clips manually.
One additional rollout displays in Motion Flow mode: The
Motion Flow rollout
on page 4548 provides access to the Motion Flow Graph and lets you load and
save motion flow files (MFE). The rollout also contains a Scripts section where
you can create scripts, edit transitions, create a unified motion, and create
random motions for the bipeds.
NOTE In Motion Flow mode, some character studio controls are disabled.
Workflow: Getting Started with Clips and Transitions in Motion Flow
Mode
Create your own library of BIP files from imported and converted
motion-capture data and from your own character animation. With a biped
selected, turn on Motion Flow mode. On the Motion Flow rollout, turn on
Show Graph to open the Motion Flow Graph. On the Motion Flow Graph,
click Create Clip, and add clips in the Motion Flow dialog. Associate the clips
to BIP files by first turning on Select Clips-Transitions on the Motion Flow
Graph toolbar and then right-clicking a clip icon; a clip dialog appears,
allowing you to browse for a clip.
Click Define Script on the Motion Flow rollout, then select a series of clips on
the Motion Flow Graph. By left-clicking on a clip it will appear in the Scripts
list. The clips are connected visually in the Motion Flow Graph with red arrows
(active script) representing default transitions (Minimum Motion Loss). The
default duration for a transition is 25 frames, which provides good results in
many cases. Transitions, by default, use velocity interpolation between clips.
Use Edit Transition in the Scripts section to fine-tune the transitions between
clips. Select a clip in the Scripts list, then from the Scripts commands, click
Edit Transition; the
Transition Editor on page 4558 displays, and the source and
destination clip names are displayed at the top of the Transition Editor.
In the Source Clip area, Start Frame represents the frame in the source file
where the transition starts. For example, if Source Clip Start Frame is 60, the
transition from the source clip starts at frame 60. The duration of the transition
is set in the Length field at the upper left; Length values are in frames. In this
example, if Length is set to 10, the transition to the destination clip takes 10
frames. In the Destination Clip area, Start Frame represents the frame in the
4546 | Chapter 17 character studio