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Issue No. 05 - May (2011 vol. 17)
ISSN: 1077-2626
pp: 682-693
Michael Lentine , Stanford University, Stanford
Jón Tómas Grétarsson , Stanford University, Stanford
Craig Schroeder , Stanford University, Stanford
Avi Robinson-Mosher , Wyss Institute for Biologically Inspired Engineering, Boston
Ronald Fedkiw , Stanford University, Stanford
In this paper, we propose a method designed to allow creatures to actively respond to a fluid environment. We explore various objective functions in order to determine ways to direct the behavior of our creatures. Our proposed method works in conjunction with generalized body forces as well as both one-way and two-way coupled fluid forces. As one might imagine, interesting behaviors can be derived from minimizing and maximizing both drag and lift as well as minimizing the effort that a creature's internal actuators exert. A major application for our work is the automatic specification of secondary motions, for example, certain joints can be animated, while others are automatically solved for in order to satisfy the objective function.
Computer graphics, animation, motion control, creatures, fluids.

J. T. Grétarsson, C. Schroeder, M. Lentine, A. Robinson-Mosher and R. Fedkiw, "Creature Control in a Fluid Environment," in IEEE Transactions on Visualization & Computer Graphics, vol. 17, no. , pp. 682-693, 2010.
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