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About Spline IK

Spline IK gives you a way of controlling many joints using a curve rather than by rotating them directly. This is especially useful when you have many joints in a continuous chain (such as in a spine or a tail), because you can move the skeleton quickly into the shape you desire without rotating each individual joint (Figure 10.34).

Figure 10.34. By creating an IK spline on these joints, you can animate a spine skeleton by moving just one point. Keyframing the rotation of each joint to achieve the same effect would be much more difficult.



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