Wind projection basis for real-time animation of trees

Julien Diener; Mathieu Rodriguez; Lionel Baboud; Lionel Reveret

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 - Laboratoire Jean Kuntzmann, INPG - Institut National Polytechnique de Grenoble

2 LadHyX - Laboratoire d'hydrodynamique

3 PIAF - Laboratoire de Physique et Physiologie Intégratives de l'Arbre Fruitier et Forestier

4 ARTIS - Acquisition, representation and transformations for image synthesis

Inria Grenoble - Rhône-Alpes, LJK - Laboratoire Jean Kuntzmann, INPG - Institut National Polytechnique de Grenoble

Abstract : This paper 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 graphics hardware. This modal animation can be simulated at low computation cost even for large scenes containing thousands of trees.

Keywords : Animation physical simulation tree modal analysis real-time

Document type :

Journal articles

Domain :

Computer Science [cs] / Graphics [cs.GR]

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https://hal.inria.fr/inria-00540761
Contributor : Team Artis <>
Submitted on : Monday, November 29, 2010 - 11:18:38 AM
Last modification on : Wednesday, March 27, 2019 - 4:39:25 PM
Long-term archiving on : Saturday, December 3, 2016 - 12:19:53 AM

Wind projection basis for real-time animation of trees

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Wind projection basis for real-time animation of trees

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