HAL - INRIA :: [inria-00328122, version 2] Wind projection basis for real-time animation of trees

inria-00328122, version 2

Wind projection basis for real-time animation of trees

Julien Diener ()^a^, 1, Mathieu Rodriguez () ^2, 3, Lionel Baboud ()^a^, 4, Lionel Reveret ()^b^, 1

Computer Graphics Forum 28, 2 (2008) 533–540

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.

a – MENRT
b – INRIA
1: EVASION (INRIA Grenoble Rhône-Alpes / LJK Laboratoire Jean Kuntzmann)
CNRS : UMR5224 – INRIA – Laboratoire Jean Kuntzmann – Institut National Polytechnique de Grenoble (INPG) – Université Joseph Fourier - Grenoble I – Université Pierre Mendès-France - Grenoble II
2: Laboratoire d'hydrodynamique (LadHyX)
CNRS : UMR7646 – Polytechnique - X
3: Laboratoire de Physique et Physiologie Intégratives de l'Arbre Fruitier et Forestier (PIAF)
INRA : UMRA547 – Université Blaise Pascal - Clermont-Ferrand II
4: ARTIS (INRIA Grenoble Rhône-Alpes / LJK Laboratoire Jean Kuntzmann)
CNRS : FR71 – INRIA – Laboratoire Jean Kuntzmann – CNRS : UMR5224 – Université Joseph Fourier - Grenoble I – Institut National Polytechnique de Grenoble (INPG)

inria-00328122, version 2
http://hal.inria.fr/inria-00328122
oai:hal.inria.fr:inria-00328122
From: Julien Diener <>
Submitted on: Tuesday, 21 October 2008 10:41:16
Updated on: Tuesday, 10 April 2012 09:22:53

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Wind projection basis for real-time animation of trees

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