Animating a character flipping or spinning around can be a hurdle in 3d. A character will forward flip over a different center of gravity then if it were to spin around 180 degrees on its right heel. Typically the solution is to set up a hierarchy of groups with pivots at different locations in which the animator can choose to rotate individually as needed. The problem with this solution, besides the redundancy of having so many group nodes to dig through, is that it takes a heavy amount of preplanning to pull it off cleanly. The idea here is to make one control that will easily move around the character's center of gravity in order to rotate the character as a whole around that center. Let it be clear that this is a MOVABLE pivot not an ANIMATABLE pivot. What that means is that it is generally a one time deal per shot. Once the control starts rotating, translating it can cause some very funky results. If you have a character that is walking and then you use the movable pivot to make it turn left 90 degrees on its heel, trying afterwards to move the pivot over to the right heel will cause the character to translate oddly. However, if the character does a forward flip 360 degrees (essentially rotating the control back to its initial orientation), then the control can be moved and used again.

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Detailed Information      Tutorial: Riggin a Movable Pivot Control in Maya      Date Listed: 2008-09-29      Submitted By: jblit      Total Hits: 8625      Rating (119 votes)

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