Frame-based interactive simulation of complex deformable objects

Benjamin Gilles 1 François Faure 2 Guillaume Bousquet 2 Dinesh K. Pai 3
1 DEMAR - Artificial movement and gait restoration
LIRMM - Laboratoire d'Informatique de Robotique et de Microélectronique de Montpellier, CRISAM - Inria Sophia Antipolis - Méditerranée
2 IMAGINE - Intuitive Modeling and Animation for Interactive Graphics & Narrative Environments
Inria Grenoble - Rhône-Alpes, LJK - Laboratoire Jean Kuntzmann, INPG - Institut National Polytechnique de Grenoble
Abstract : We present a new type of deformable model which combines the realism of physically based continuum mechanics models and the usability of frame-based skinning methods, allowing the interactive simulation of objects with heterogeneous material properties and complex geometries. The degrees of freedom are coordinate frames. In contrast with traditional skinning, frame positions are not scripted but move in reaction to internal body forces. The deformation gradient and its deriv- atives are computed at each sample point of a deformed object and used in the equations of Lagrangian mechanics to achieve physical realism. We introduce novel material-aware shape functions in place of the traditional radial basis functions used in meshless frameworks, allowing coarse deformation functions to efficiently resolve non-uniform stiffnesses. Complex models can thus be simulated at high frame rates using a small number of control nodes.
Keywords : Motion
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Benjamin Gilles, François Faure, Guillaume Bousquet, Dinesh K. Pai. Frame-based interactive simulation of complex deformable objects. Hidalgo González, Manuel and Mir Torres, Arnau and Varona Gómez, Javier. Deformation Models, 7, Springer, pp.145-166, 2013, Lecture Notes in Computational Vision and Biomechanics, 978-94-007-5446-1. ⟨10.1007/978-94-007-5446-1_6⟩. ⟨http://www.springer.com/computer/image+processing/book/978-94-007-5445-4⟩. ⟨lirmm-00806088⟩

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