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Presents an interface for creating whole-body motions of human and animal characters without reference motion. Its basic function is to enable animators to generate a natural motion by dragging a link to an arbitrary position with any number of links pinned in the global frame, as well as other constraints such as desired joint angles and joint motion ranges. Each constraint can be switched on or off, strengthened or weakened for each joint at a user's will. The interface is based on an online inverse kinematics technique that allows more flexible attachment of pins and various types of constraints. Editing or retargeting captured motion requires only a small modification to the original method, although the method can create natural motions from scratch. We also demonstrate the power and usability of the proposed method by a number of example motion clips.
Yamane et al. (Wed,) studied this question.