Unified Processing of Constraints for Interactive Simulation

Guébert, Christophe; Duriez, Christian; Grisoni, Laurent

Unified Processing of Constraints for Interactive Simulation

Files

021-029.pdf (312.43 KB)

Date

2008

Authors

Guébert, Christophe
Duriez, Christian
Grisoni, Laurent

Publisher

The Eurographics Association

Abstract

This paper introduces a generic way of dealing with a set of different constraints (bilateral, unilateral, dry friction) in the context of interactive simulation. We show that all the mentioned constraints can be handled within a unified framework: we define the notion of generalized constraints, which can be derived into most classical constraints types. The solving method is based on an implicit treatment of constraints that provides good stability for interactive applications using deformable models and rigid bodies. Each constraint law is expressed in constraint subspace, making constraint evaluation much easier. A global solution is calculated using an iterative process that takes into account the mechanical coupling between the constraints. Various examples, from basic to more complex, show the practical advantage of using generalized constraints, as a way of creating heterogeneously constrained systems, as well as the scalability of the proposed method.

        @inproceedings{10.2312:PE/vriphys/vriphys08/021-029
,
booktitle = {Workshop in Virtual Reality Interactions and Physical Simulation "VRIPHYS" (2008)
},
editor = {Francois Faure and Matthias Teschner
},
title = {{Unified Processing of Constraints for Interactive Simulation
}},
author = {Guébert, Christophe and 
Duriez, Christian and 
Grisoni, Laurent
},
year = {2008
},
publisher = {The Eurographics Association
},
ISBN = {978-3-905673-70-8
},
DOI = {10.2312/PE/vriphys/vriphys08/021-029
}
}