9

396 Chapter 12: Animation
TCB group
All of the items in this group are the same as
in other TCB controllers (page 2–377).The
orientation of the source object is also interpolated
and affected by these settings.
Tension—Range=0 to 50
Co ntinuity—Range=0 to 50
Bias—Range=0 to 50
Ease To—Range=0 to 5 0
Ease From—Range=0 to 50
Surface Constraint
Animation m enu > Constraints > Sur face Constraint
Animation menu > Track View > New/Open Track View
> S elect a position track in Track View Hierarchy. > Track
View toolbar > Assign Controller > Surface
Surface constraints position the weather symbols on the globe.
The Surface constraint positions an object along
the surface of another object.
Thetypeofobjectthatcanbeusedasthesurface
object is limited to those whose surfaces can
be represented par ametrically. Use the Surface
constraint with the following types of objects:
•Sphere
•Cone
•Cylinder
•Torus
• Quad Patches (single quad patches)
•Loftobject
•NURBSobject
The sur face used is a "virtua l" parametric surface,
and not the actual mesh surface. Objects with
a low number of segments might have a mesh
surface quite different than the parametric surface.
The parametric surface ignores Slice and
Hemisphere options. So if the object is sliced, for