Animating Lava Flows

Dan Stora Pierre-Olivier Agliati Marie-Paule Cani 1, * Fabrice Neyret 1, * Jean-Dominique Gascuel 1
* Corresponding author
1 iMAGIS - Models, Algorithms and Geometry for Computer Generated Image Graphics
GRAVIR - IMAG - Graphisme, Vision et Robotique, Inria Grenoble - Rhône-Alpes
Abstract : Animating lava flowing down the slopes of a volcano brings several challenges: modeling the mechanical features of lava and how they evolve over time depending on temperature; computing, in a reasonable time, the interactions inside the flow, and between the flow and a complex terrain data-base; and lastly, rendering the visual aspect of the flow. The methods described rely on smoothed particles governed by a state equation for animating the flow. We adapt this model to the animation of lava by linking viscosity to a temperature field and by simulating heat transfers. We propose particular data-structures that lead to linear computational time with respect to the number of particles. Lastly, we study a model based on a color-and-displacement procedural texture controlled by the flow for the realistic rendering of lava.
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Dan Stora, Pierre-Olivier Agliati, Marie-Paule Cani, Fabrice Neyret, Jean-Dominique Gascuel. Animating Lava Flows. Graphics Interface (GI'99) Proceedings, 1999, Kingston, Ontario, Canada. pp.203--210. ⟨inria-00510066⟩

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