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Wind projection basis for real-time animation of trees

Julien Diener 1 Mathieu Rodriguez 2, 3 Lionel Baboud 4 Lionel Reveret 1
1 EVASION - Virtual environments for animation and image synthesis of natural objects
Inria Grenoble - Rhône-Alpes, LJK [2007-2015] - Laboratoire Jean Kuntzmann [2007-2015], Grenoble INP [2007-2019] - Institut polytechnique de Grenoble - Grenoble Institute of Technology [2007-2019]
4 ARTIS - Acquisition, representation and transformations for image synthesis
Grenoble INP [2007-2019] - Institut polytechnique de Grenoble - Grenoble Institute of Technology [2007-2019], LJK [2007-2015] - Laboratoire Jean Kuntzmann [2007-2015], Inria Grenoble - Rhône-Alpes
Abstract : This scientific report presents a real-time method to animate complex scenes of thousands of trees under a user-controllable wind load. Firstly, modal analysis is applied to extract the main modes of deformation from the mechanical model of a 3D tree. The novelty of our contribution is to precompute a new basis of the modal stress of the tree under wind load. At runtime, this basis allows to replace the modal projection of the external forces by a direct mapping for any directional wind. We show that this approach can be efficiently implemented on a graphics hardware. This modal animation can be simulated at low computation cost even for large scenes containing thousands of trees.
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https://hal.inria.fr/inria-00328122
Contributor : Julien Diener <>
Submitted on : Tuesday, October 21, 2008 - 10:41:16 AM
Last modification on : Friday, July 17, 2020 - 11:38:57 AM
Document(s) archivé(s) le : Tuesday, September 21, 2010 - 5:19:48 PM

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  • HAL Id : inria-00328122, version 2

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Julien Diener, Mathieu Rodriguez, Lionel Baboud, Lionel Reveret. Wind projection basis for real-time animation of trees. [Research Report] RR-6674, INRIA. 2008, pp.20. ⟨inria-00328122v2⟩

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