article

Fast and easy reach-cone joint limits

Authors:

Jane Wilhelms,

Allen Van GelderAuthors Info & Claims

Journal of Graphics Tools, Volume 6, Issue 2

Pages 27 - 41

https://doi.org/10.1080/10867651.2001.10487539

Published: 01 September 2002 Publication History

Abstract

We describe a simple and fast method of creating and using joint sinus reach cones to limit the range of motion on universal and ball-and-socket joints. Reach cones can be created interactively or based on results from biomechanics. A reach cone is specified as a spherical polygon on the surface of a reach sphere that defines all positions the longitudinal segment axis beyond the joint can take. Reach polygons can be concave or convex, and cover more than one hemisphere. Longitudinal axis rotation limits can also be defined for locations in the reach cone. Calculations to determine whether a segment is within the reach cone are based on the relation of the segment longitudinal axis to the planes defining the reach cone and are done in the local coordinate space of the segment. The calculations have no discernible effect on the speed of interactive display or animation.

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{Wilhelms, Van Gelder 01} Jane Wilhelms and Allen Van Gelder. Efficient Spherical Joint Limits with Reach Cones. Technical report, UCSC, April 2001. Available at http://www.acm.org/jgt/papers/Wilhelms VanGelder01

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Cited By

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Huang JFratarcangeli MDing YPelachaud C(2017)Inverse kinematics using dynamic joint parametersThe Visual Computer: International Journal of Computer Graphics10.1007/s00371-016-1297-x33:12(1541-1553)Online publication date: 1-Dec-2017
https://dl.acm.org/doi/10.1007/s00371-016-1297-x
Aristidou AChrysanthou YLasenby J(2016)Extending FABRIK with model constraintsComputer Animation and Virtual Worlds10.1002/cav.163027:1(35-57)Online publication date: 1-Jan-2016
https://dl.acm.org/doi/10.1002/cav.1630
Davis JAgrawala MChuang EPopović ZSalesin DMcMains SSloan P(2007)A sketching interface for articulated figure animationACM SIGGRAPH 2007 courses10.1145/1281500.1281534(23-es)Online publication date: 5-Aug-2007
https://dl.acm.org/doi/10.1145/1281500.1281534
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Fast and easy reach-cone joint limits

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Published In

Journal of Graphics Tools Volume 6, Issue 2

2001

49 pages

ISSN:1086-7651

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A. K. Peters, Ltd.

United States

Publication History

Published: 01 September 2002

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Huang JFratarcangeli MDing YPelachaud C(2017)Inverse kinematics using dynamic joint parametersThe Visual Computer: International Journal of Computer Graphics10.1007/s00371-016-1297-x33:12(1541-1553)Online publication date: 1-Dec-2017
https://dl.acm.org/doi/10.1007/s00371-016-1297-x
Aristidou AChrysanthou YLasenby J(2016)Extending FABRIK with model constraintsComputer Animation and Virtual Worlds10.1002/cav.163027:1(35-57)Online publication date: 1-Jan-2016
https://dl.acm.org/doi/10.1002/cav.1630
Davis JAgrawala MChuang EPopović ZSalesin DMcMains SSloan P(2007)A sketching interface for articulated figure animationACM SIGGRAPH 2007 courses10.1145/1281500.1281534(23-es)Online publication date: 5-Aug-2007
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Davis JAgrawala MChuang EPopović ZSalesin DFinnegan JShreiner D(2006)A sketching interface for articulated figure animationACM SIGGRAPH 2006 Courses10.1145/1185657.1185776(15-es)Online publication date: 30-Jul-2006
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Weinstein RTeran JFedkiw R(2006)Dynamic Simulation of Articulated Rigid Bodies with Contact and CollisionIEEE Transactions on Visualization and Computer Graphics10.1109/TVCG.2006.4812:3(365-374)Online publication date: 1-May-2006
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Shao WNg-Thow-Hing VZyda MCapps MPausch RBishop G(2003)A general joint component framework for realistic articulation in human charactersProceedings of the 2003 symposium on Interactive 3D graphics10.1145/641480.641486(11-18)Online publication date: 27-Apr-2003
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Wilhelms JVan Gelder A(2003)Combining vision and computer graphics for video motion captureThe Visual Computer: International Journal of Computer Graphics10.1007/s00371-003-0201-719:6(360-376)Online publication date: 1-Oct-2003
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On the directed cut cone and polytope

Lifts of Convex Sets and Cone Factorizations

Collapsing and lifting for the cut cone

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