Proceedings: GI 1999

Animating Lava Flows

Dan Stora , Pierre-Olivier Agliati , Marie-Paule Cani , Fabrice Neyret , Jean-Dominique Gascuel

Proceedings of Graphics Interface '99: Kingston, Ontario, Canada, 2 - 4 June 1999, 203-210

DOI 10.20380/GI1999.26

  • BibTeXex

    @inproceedings{lava-gi99,
     title = {Animating Lava Flows},
     author = {Dan Stora and Pierre-Olivier Agliati and Marie-Paule Cani and Fabrice Neyret and Jean-Dominique Gascuel},
     booktitle = {Proceedings of the Graphics Interface 1999 Conference, June 2-4, 1999, Kingston, Ontario, Canada},
     year = {1999},
     month = {June},
     pages = {203--210},
     url = {http://graphicsinterface.org/wp-content/uploads/gi1999-26.pdf}
    }
    

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.