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362 Chapter 12: Animation
can change the parameters in the Key Info dialog
and see the t rajectory path change. This allows for
very precise control of an object’s trajectory with
visual feedback.
Euler XYZ is now the default rotation controller
in 3ds Max. The TCB Rotation controller was
the default rotation controller for files created in
versions 4 and earlier.
Tip: Euler XYZ behaves very differently than
TCB rotations. Users upgrading from versions 4
or earlier might have difficulty adapting to the
differences between these controllers. If you are
used to working with TCB rotations, you can
reassign it to be the default rotation controller.
Procedure
To change an Euler XYZ R otation controller into a
TCB Rotation controller:
1.
Select an object animated with an Euler XYZ
rotation controller.
2. In Mot ion panel > Parameters > Assign
Controller rollout, select the Rotation track in
the list window.
3. Click Assign Controller, and then select
Quaternion (TCB).
You can also assign this controller in Track
V iew or from the Animation menu.
Interfa ce
TCB controllers display their properties in a Key
Info dialog in Track View and a single Key Info
rollout in the M otion panel.
Time field—Specifieswhenintimethekeyoccurs.
Time Lock—Prevents horizontal key motion in
Tra ck View edit mo des.
Key Value fields—Stores the animation values for
the key. The number and meaning of the fields
vary with different parameter data types. Some
typical field arrangements are:
• XYZ fields for Position and Point3 keys
• XYZ percentage fields for Scale keys
• A single value field for Float keys
TCB Gr ap h—Charts the effect that chang ing the
controller properties will have on the animation.
Theredmarkatthetopofthecurverepresentsthe
key. Themarkstotheleftandrightofthecurve
representanevendivisionoftimetoeitherside
of the key.
The TCB graph is a stylized representation of the
animation around a single key. If you want to view
the effect of changing TCB properties on the true
animation curve, use the Function Curves mode of
Track View (works only with position and scale).