Extending the friction cone algorithm for arbitrary polygon based haptic objects

  • Authors:
  • N. Melder;W. S. Harwin

  • Affiliations:
  • Department of Cybernetics, School of Systems Engineering, University of Reading, Reading, United Kingdom;Department of Cybernetics, School of Systems Engineering, University of Reading, Reading, United Kingdom

  • Venue:
  • HAPTICS'04 Proceedings of the 12th international conference on Haptic interfaces for virtual environment and teleoperator systems
  • Year:
  • 2004

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Abstract

Most haptic environments are based on single point interactions whereas in practice, object manipulation requires multiple contact points between the object, fingers, thumb and palm. The Friction Cone Algorithm was developed specifically to work well in a multifinger haptic environment where object manipulation would occur. However, the Friction Cone Algorithm has two shortcomings when applied to polygon meshes: there is no means of transitioning polygon boundaries or feeling non-convex edges. In order to overcome these deficiencies, Face Directed Connection Graphs have been developed as well as a robust method for applying friction to non-convex edges. Both these extensions are described herein, as well as the implementation issues associated with them.