Autodesk 12812-051462-9011 User Guide 3 - Page 2731

Foot States The biped feet can be in one of four states: plant, lift, move, and touch: ■ Plant The biped foot state in full contact with the footstep. ■ Lift The biped foot state just before leaving a footstep. ■ Move The biped foot state between footsteps; an airborne period. ■ Touch The biped foot state at which a biped foot first contacts a footstep. Footstep Animation Biped's patented footstep-driven keyframe animation feature allows animators to use footsteps to create broad, global brush strokes for character movement. Once footsteps are in place, keyframes are generated automatically to produce an initial sketch of the 3D character's motion. Throughout edits and revisions, the original nuances of the character are preserved; Biped remembers everything about how a character moves, and it makes all of the appropriate adjustments if the footsteps are changed. Footsteps Method Footsteps provide a way to animate a biped on page 4147. In viewports, footsteps represent support periods in space for the biped's feet. Moving or rotating footsteps in space is done in the viewports. The footstep position and orientation in the viewport controls where the biped will step. In Track View - Dope Sheet, each footstep appears as a block that represents a support period in time for each of the biped's feet. Moving footsteps in time is done in Track View - Dope Sheet. TIP To see the footsteps, you must turn on Edit Keys in the Dope Sheet. There are three ways to create footsteps for the biped. The first way is to place footsteps individually, one at a time. The second way is to invoke Biped's multiple footstep creation tools to create a walk, run, or jump animation. The third way is to extract footsteps from raw motion-capture data. 7986 | Glossary