You??™ll see that this area now lists values for T, C, and B??”shorthand
for Tension, Continuity, and Bias. I??™ll explain these terms
in greater detail a little later, but for now let??™s see how some tension
adjustments can correct our teacup animation. Clicking
and dragging in the current frame will increase or decrease the
tension for the current frame, which is 0.
Figure 6.16
The Move TCB
tool can be
found on the
Modify tab in
Layout.
5. Click and drag to the right until the tension reads 1.0, as in Figure 6.17.
Figure 6.17 A Tension value of 1, as reflected in the Move TCB tool??™s info area.
6. Go to frame 10 and this time, set a tension of -1.0 by clicking in the Layout
window and dragging to the left.
7. Now set a 1.0 tension for frames 30 and 200. This will help control the motion
at these keyframes. Leave frame 20 alone. You want the cup to come up to this
keyframe and drop back down. Setting a tension value here would make it pause
it mid-air.
Play back the animation, and you??™ll see that the teacup starts out slower and hits
the saucer with more force. It bounces up at frame 20, and comes to rest at frame
30, then holds firm through frame 200.
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